CN110160632A - Acoustic energy grade cylindrical measurement face method detects the method that ceramic pedestal pan rinses noise - Google Patents
Acoustic energy grade cylindrical measurement face method detects the method that ceramic pedestal pan rinses noise Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
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Abstract
The present invention relates to a kind of console mode ceramic pedestal pans to rinse noise detecting method, and detecting step includes: sample installation and debugging；Sound source reference body and cylindrical measurement surface determine；Sound-pressure-level measurement；Acoustic energy grade calculates and ambient noise, test environment are gentle as condition is corrected；Evaluation of result；Its special feature is that: on cylindrical measurement face with cumulative percent acoustic energy grade LJA(10)The toilet seat of characterization rinses noise and carries out accurate quantitative detection；Present invention provide that continuous N at each microphone position in cylindrical measurement faceeA cumulative percent time integral sound pressure level L ' for rinsing single event in noise emission eventEAi,q(ST)(10)T、L′EAi,q(ST)(10)S(q=1,2 ... Ne；Ne>=5) and ambient noise cumulative percent time average sound pressure level LpAi(B)(10)T、LpAi(B)(10)SIt is measured, calculates its acoustic energy grade L in normal flush cycleJA(10), and evaluation of result foundation is provided.The present invention has filled up toilet seat and has rinsed noise detection technique field blank, can be Improving The Quality of Products, regulating market order provides detection technique support.
Description
Technical field
The present invention relates to noise quantitative measuring method, specifically a kind of fast time using sound level meter A weighted equivalent sound level
Character of weighting " F " on cylindrical measurement surface with cumulative percent acoustic energy grade LJA(10)The console mode ceramic pedestal pan of characterization
The detection method for rinsing noise, belongs to ceramic physicochemical property detection technique field.
Background technique
In recent years, toilet can not be ignored as basic livelihood issues and important civilized windows, construction quality,
Cumulative year after year and people along with console mode ceramic pedestal pan in the people's livelihood major fields usage amount such as food and drink, tourism, house
The enhancing of health environment-friendly consciousness, toilet seat rinses noise monitoring and prevention and control are increasingly subject to the common concern of various circles of society.
Noise generic hydrodynamic noise scope caused by toilet seat flushing process, substantially by the structural vibration of pipeline
Noise, the fluid noise of water and Cavitation Noise three parts are constituted, when liquid in pipe medium passes through the pipe such as elbow of pipeline and reduced pipe
When road region, pipeline forms mechanical oscillation under exciting force effect；And fluid noise is then originated from the pressure of liquid and flow velocity becomes
Change, it is main including noise, water that water flows in toilet seat hydrosphere to go out hydrosphere and fall in making an uproar of issuing on toilet seat inner wall
Sound, water are when the noise and the siphon of blowdown later period that noise, the water flowed on toilet seat inner wall rotates in toilet seat are destroyed
Noise；Wherein fluid noise is that toilet seat rinses the main source of noise, rapid if water flow is too urgent in hydrosphere in flushing process
Turbulent flow pressure will be generated by flowing boundary-layer, cause to flow sharp hull vibration and vortex radiated noise.In addition, in the siphon later period due to sky
Gas, which is filled with, destroys siphonic effect, and causing peripheral part air to form vortex causes pressure jump to generate noise, while flushed
Uneven distribution in journey due to flow rate of liquid easily forms local decompression, also leads to the formation of Cavitation Noise.Noise has
All characteristics of Acoustic Wave Propagation, wherein the directive property that the closely related propagation characteristic of noise testing is sound wave is rinsed with toilet seat,
Measuring point distribution must be rationally set in actual measurement.
Through investigating, due to the missing of dependence test technology, cause toilet seat flushing noise measuring result comparison poor,
It is difficult to quantitative verification.2015, National Standards Commission issued GB 6952-2015 " sanitary ceramics " national standard, and clear stipulaties are sat
The Permissible limit L of toilet stool washing noise50≤55dB、L10≤ 65dB, but not specifying above-mentioned technical indicator actually is A weighted acoustic pressure
Grade or acoustic power level；Although the 8.6.8 articles of the standard indicates that " toilet seat rinses noise fest method according to GB/T 3768-
1996 " acoustic sound pressure method measurement Sound Power Level of Noise Source reflecting surface above using envelope measurement surface simplified methods " require into
Row ", but national standard GB/T 3768 must establishing criteria GB/T 14367 i.e. " acoustic noise source acoustical power as Basic of Acoustics standard
The measurement basic standard guide for use of grade " it uses, the scope of application is only limited to the noise testing specification indicated with acoustic power level volume
System provides general principle, only formulates the basic of all kinds of correlated noise test specifications under the conditions of offer varying environment and accuracy
It is required that the particular technique for not being related to noise testing requires and method and step；Because the standard content profundity is abstract, hard to understand, therefore
It is difficult to be directly applied to toilet seat flushing noise measuring.
Currently, sanitary ceramics has been put into increased quality major products field, improves correlation quality detecting method standards system and carve
Do not allow to delay, it has been trend of the times that research and development ceramic pedestal pan, which rinses noise detection technique,.It therefore, is promotion toilet seat product quality
It is promoted, polishing influences the masses of the people the toilet short slab of quality of the life；Urgently strengthen supporting role of the patented technology to standard development,
The appearance of the present invention patent has certain realistic meaning for the upgrading of power-assisted China traditional ceramics industrial transformation.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of fast time weighteds of A weighted equivalent sound level using sound level meter
Characteristic " F " on cylindrical measurement surface with cumulative percent acoustic energy grade LJA(10)The console mode ceramic pedestal pan of characterization rinses
The method that noise is detected is able to solve console mode ceramic pedestal pan and rinses noise or even bathroom ceramics water inlet/draining noise
Accurate quantitative test problem.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
A kind of console mode ceramic pedestal pan rinses the detection method of noise, comprising: (1) sample installation and debugging；(2) sound
Source reference body and cylindrical measurement surface determine；(3) sound-pressure-level measurement；(4) calculating of acoustic energy grade and ambient noise, test wrapper
Border and meteorological condition amendment；(5) evaluation；It is characterized in that, using sound level meter A weighted equivalent sound level it is fast when
Between character of weighting " F " to cumulative percent acoustic energy grade LJA(10)The console mode ceramic pedestal pan of characterization rinses noise and carries out essence
Quasi- quantitative detection, specific:
In sound-pressure-level measurement:
In semi-anechoic room or reverberation chamber, for console mode ceramic pedestal pan sample installation requirement, determine that different reflections are flat
The positioning of sound source reference body and its sound source characteristics size d is calculated under the conditions of face0；Selection rinses noise source reference body with toilet seat
Corresponding cylindrical measurement surface is simultaneously really sized, and specifies the coordinate of microphone position array on different measurement surfaces.With
The time of integration that the normal flush cycle of console mode ceramic pedestal pan is acquired as sound signal；It is equivalent using sound level meter A weighted
The cumulative percent time that the slow time character of weighting " S " of sound level measures ambient noise on selected cylindrical measurement surface is average
Sound pressure level LpAi(B)(10)T、LpAi(B)(10)S；Then under the conditions of the test static pressure of 0.35MPa ± 0.05MPa, starting bath dress
It sets, N is continuously repeated to toilet seat sampleeSecondary flushing operation.For different washing water quantity test requests, selected cylinder is measured
(each flush cycle can be considered a list to q-th of flushing noise emission event at i-th of microphone position on bulk measurement surface
Only noise emission event；Q=1,2 ... Ne；Ne>=5) A weighted single event cumulative percent time integral sound pressure level
L′EAi,q(ST)(10)T、L′EAi,q(ST)(10)S；
In the calculating of acoustic energy grade:
According to related notion and calculation formula in GB/T 3767-2016, by sound level meter on selected cylindrical measurement surface
The ambient noise A weighted cumulative percent time average sound pressure level L measuredpAi(B)(10)T、LpAi(B)(10)SAnd each microphone position
Set the continuous N in placeeQ-th event in a flushing noise emission event (q=1,2 ... Ne；Ne>=5) A weighted single event is accumulative
Percentage time integral sound pressure level L 'EAi,q(ST)(10)T、L′EAi,q(ST)(10)SAs basic data, its mean value is calculatedAnd L 'Ei(ST)(10)T、L′Ei(ST)(10)S；It is derived from continuous N on cylindrical measurement surfaceeA toilet seat
Rinse the average value of the A weighted single event cumulative percent time integral sound pressure level of noise emission event WithAmbient noise, test environment and meteorological condition are modified；It calculates on cylindrical measurement surface
Continuous NeA toilet seat rinses the A weighted single event cumulative percent time integral sound pressure level of noise emission event?
The A weighted cumulative percent acoustic energy grade L of each sample wash noise outJA(10)And every group of sample wash noise A weighted is tired
Count the average value of percentage acoustic energy gradeSpecify the related data revision of the convention and uncertainty of measurement requirement；
In evaluation of result:
As some sample wash noise A weighted cumulative percent acoustic energy grade LJA(10)3 sample wash noises are organized greater than this
A weighted cumulative percent acoustic energy grade LJA(10)Arithmetic mean of instantaneous value10% when, extract again one group of sample repeat it is real
It tests；And calculate the slow time character of weighting of the two groups of console mode ceramic pedestal pan sample application sound level meter A weighted equivalent sound levels in front and back
The flushing noise cumulative percent acoustic energy grade L that " S " is measured through cylindrical measurement surface methodJA(10)Arithmetic mean of instantaneous value
If some sample wash noise A weighted cumulative percent acoustic energy grade LJA(10)Greater than this two groups of 6 sample wash noise A meters
Weigh cumulative percent acoustic energy grade LJA(10)Arithmetic mean of instantaneous value10%, then abandon it；Remaining toilet seat sample wash is taken to make an uproar
Sound A weighted cumulative percent acoustic energy grade LJA(10)Arithmetic mean of instantaneous valueAs this group of console mode ceramic pedestal pan sample
Rinse the evaluation index of noise.
The present invention by adopting the above technical scheme, compared with prior art, beneficial effect is:
(1) advanced: in semi-anechoic room or reverberation chamber acoustic enviroment, by applying modern precision instrument --- sound level
Meter is measured the flushing noise of cylindrical measurement surface microphone position array, and corrects ambient noise.In view of toilet seat
Rinse mode starting is a transient process, and taking can correctly reflect it on the A weighted of human psychological and physiological influence accumulative hundred
Score acoustic energy grade LJA(10)As subjective assessment parameter；Detection technique has certain advance, has reached ceramic pedestal pan
The modernization of noise measuring is rinsed, to realize that necessary hardware foundation has been established in the precision of testing result.
(2) scientific: to cause the discontinuous feature of noise based on the flowing of liquid non-steady state, make an uproar for toilet seat flushing
Cylindrical measurement surface acoustical model is established according to envelope sound source test philosophy in sound mechanism of production and route of transmission；Analysis comprehensively
Influence of the factors such as ambient noise, environment and meteorological condition to testing result, and with the examination of civil buildings feedwater piping operating pressure
A weighted cumulative percent acoustic energy grade measurement result L under the conditions of testingJA(10)As noise rating index is rinsed, meet landing
Formula toilet seat real use state and consumer's focus, improve the science of detection method.
(3) normative: test result to be evaluated according to national requirements for environmental protection and target level of product quality, related instrument
Equipment, sound source reference body, measurement surface, calculation formula etc. technical requirements are referring to China's Basic of Acoustics standard GB/T 3767-
Respective specified in 2016；And the structural diagrams of applicable reference body and cylindrical measurement surface are provided, while specifying sample
The series of key techniques content such as installation, measuring point coordinate, measuring process, calculation formula, uncertainty, evaluation of result, Neng Goushi
Existing console mode ceramic pedestal pan rinses the quantification of noise measuring result.
(4) accuracy: using high degree of automation, technologically advanced maturation sound level meter as test equipment, using three
The evaluation result of ceramic pedestal pan sample determines conclusion as final；It chooses in normal flush cycle, is counted using the A of sound level meter
The fast time character of weighting " F " for weighing equivalent sound level measures the cumulative percent sound energy for rinsing noise through cylindrical measurement surface method
Magnitude LJA(10)As correlated results evaluation index；And the influence factors such as ambient noise, test environment, meteorological condition are repaired
Just, the cumulative effect for determining uncertainty in measurement process comprehensively, can effectively avoid measurement error.
(5) innovative: to rinse the influence of noise to toilet seat for feed pressure, given according to each floor gap of civil buildings
Noise testing demand under the conditions of waterpipe pressure limit and different washing water quantities；(partly punching or complete is chosen in normal flush cycle
Punching) the A weighted cumulative percent acoustic energy grade L of noise is rinsed on cylindrical measurement surfaceJA(10)As each toilet seat sample
Evaluation of result index；And clear sample mounting condition and cistern fittings commissioning requirements, pass through and limits background at each measuring point coordinate
Noise and the measurement frequency and data processing for rinsing noise, improve the accuracy and representativeness of testing result, can fill up mesh
The blank of preceding dependence test technical field.
(6) operability: sound level meter is cheap, is widely used, sample as defined in the method for the present invention installation, debugging and
A series of experiments is easy to operation；Related test parameter, measurement surface, measuring point array, testing procedure, calculation formula, data
Processing, describing clearly for technology contents of evaluation criterion etc. and it is specific, correlation graph illustrates intuitive and accurate, is easy to this
The understanding and grasp of patented method may advantageously facilitate the transfer of achievement so that patent working process has stronger operability
Conversion and popularization and application.
(7) universality: being based on above-mentioned advantage, and the method for the present invention has stronger practicability, be conducive to expand inspection,
Grind, produce the popularization and application of all circles；Be conducive to that ceramic pedestal pan is supported to rinse noise detection technique realization generalization, it can be to squat toilet
Other sanitary wares such as device, the flushing noise of urinal and wash basin, bidet, inlet valve and tank for excrement pan accessory,
To the products such as/drainage pipeline in use caused by noise and its detection technique research offer reference.
Further, preferred embodiment of the invention is:
The sample installation and debugging, carry out in the steps below:
(1) 3 types, specification, the identical porcelain of size or Shi ceramic that same producer, same batch produce are landed
For formula toilet seat sample as one group, internal structure is that punching falls formula or hydrocone type；
(2) it is equipped with and meets flush box and cistern fittings that specified water consumption requires, and the ring of the suitable size of outfit,
Cover board and flange (are the toilet seat sample of heel row formula for drainage pattern, the suitable flange of size should be used its drainage pattern
Lower-discharging type is adjusted to by heel row formula), it supplies water according to the test of water tank type closet as defined in the 8.8.2.1 articles in GB 6952-2015
System standardization debugging routine debugs the cistern water supply system of toilet seat sample to be measured；The working water level of flush box
It can satisfy normal flushing process needs, nominal water consumption is equal with actual used water amount；
(3) it is that toilet seat sample to be measured assembles corresponding flushometer and water inlet pipe referring to the installation instructions of factory, presses
It is attached seal tightness test according to the 8.11st article of regulation in GB 6952-2015, under the test water pressure condition of 0.1MPa,
It is continuous to keep 15min, connecting line ne-leakage, it is ensured that toilet seat and flushometer have good overall tightness；
(4) for installation not close to the console mode ceramic pedestal pan sample of any sidewalls when, if in semi-anechoic room
It is tested in the acoustic enviroment of proximate freedom field above reflecting surface, it is central and true sample to be tested directly can be placed in ground
It is normal to protect its pre-washing function.If tested in rigid plane room or dedicated reverberation chamber, sample is placed on ground simultaneously
So that it is not less than 1.0m at a distance between the walls with any one side, while ensuring that pre-washing function is normal；
It (5), can be in rigid plane room or dedicated reverberation chamber for the console mode ceramic pedestal pan sample close to wall installation
In tested, sample to be tested is placed on ground, distance between its back side and close perpendicular walls reflecting surface is made
15cm ± 5cm, and ensure the distance between sample and its indoor excess-three sidewalls not less than 1.5m；Guarantee to rinse function simultaneously
It can be normal；
It (6), can be in rigid plane room or dedicated reverberation chamber for the console mode ceramic pedestal pan sample close to corner installation
In tested, sample to be tested is placed on ground, its back side and side and two close perpendicular walls reflectings surface are made
Between distance be 15cm ± 5cm, and ensure that sample and indoor in addition two sides are not less than 1.5m at a distance between the walls；It protects simultaneously
It is normal to demonstrate,prove pre-washing function.
The determination of the sound source reference body and cylindrical measurement surface carries out in the steps below:
(1) toilet seat rinses the determination of noise source reference body shape and size: with reference to the in GB/T 3767-2016 the 7.1st
Relevant regulations, the center of the formed cabinet of mirror image using sound source reference body and its in neighboring reflection plane is as coordinate original
Point O, trunnion axis x and y are parallel with the length of reference body and width respectively.Using the horizontal length of toilet seat sample as sound source reference body
Length l1, using the horizontal width of flush box as the width l of sound source reference body2, with water tank working water bit line to ground hang down
Height l of the straight distance as sound source reference body3；Corresponding to different test environment conditions, the characteristic size d of sound source reference body0
Respectively [(l1/2)2+(l2/2)2+l3 2]1/2(plane of reflection), [l1 2+(l2/2)2+l3 2]1/2(two planes of reflection) and
[l1 2+l2 2+l3 2]1/2(three planes of reflection), unit are rice (m)；
(2) determination of cylindrical measurement surface and its microphone position array: according in standard GB/T 3767-2016
7.2.5 article, and the 8.1.3 articles relevant regulations, cylindrical measurement surface used by testing is with the coordinate origin of sound source reference body
For bottom centre, the measurement distance to each side of reference body is respectively d1And d2, the measurement distance to reference body top surface is d3.Circle
The gross area S that cylinder measures surface is the area S of top levelsTWith the area S of side vertical planesThe sum of, the radius of cylindrical body
R=l1/2+d1=l2/2+d2, high hs=l3+d3；L in formula1、l2And l3The respectively length and width and height of reference body, wherein l1≥l2,
d1=d3=1.0m, d2=R-l2/2；d1≤1.5d2And d1≤1.5d3, d2≤1.5d1And d2≤1.5d3, d3≤1.5d1And d3≤
1.5d2；Unit is rice (m).If be located on a plane of reflection when console mode ceramic pedestal pan sample to be measured is installed, survey
Scale face is a complete cylindrical body, the area S of side vertical planes=2 π Rhs, the area S of top levelsT=π R2。
The microphone position coordinate (x, y, z) of side the 1st~20 is respectively (- R, 0,9hs/10)、(-R,0,7hs/10)、(-R,0,
5hs/10)、(-R,0,3hs/10)、(-R,0,hs/10)、 (R,0,9hs/10)、(R,0,7hs/10)、(R,0,5hs/10)、(R,
0,3hs/10)、(R,0,hs/10)、 (0,-R,9hs/10)、(0,R,9hs/10)、(0,-R,7hs/10)、(0,R,7hs/10)、
(0,-R,5hs/10)、 (0,R,5hs/10)、(0,-R,5hs/10)、(0,R,5hs/10)、(0,-R,3hs/10)、(0,R,3hs/
10)、 (0,-R,hs/10)、(0,R,hs/10)；The microphone position coordinate (x, y, z) of top surface the 1st~16 is respectively (0,7R/
8,hs)、(0,5R/8,hs)、(0,3R/8,hs)、(0,R/8,hs)、(7R/8,0,hs)、(5R/8,0,hs)、 (3R/8,0,hs)、
(R/8,0,hs)、(0,-7R/8,hs)、(0,-5R/8,hs)、(0,-3R/8,hs)、 (0,-R/8,hs)、(-7R/8,0,hs)、(-
5R/8,0,hs)、(-3R/8,0,hs)、(-R/8,0,hs).Close to two planes of reflection when if toilet seat sample to be measured is installed
It places, then measuring surface is 1/2 cylindrical body, the area S of side vertical planes=π Rhs, the area S of top levelsT=π
R2/ 2 (the long l of sound source reference body1, i.e., from wall to the distance of corresponding reference body front end face)；The microphone position of side the 1st~15
Setting coordinate (x, y, z) is respectively (0 ,-R, 9hs/10)、(0,-R,7hs/10)、(0,-R,5hs/10)、(0,-R,3hs/10)、
(0,-R,hs/10)、 The microphone position coordinate of top surface the 1st~9 (x, y,
Z) it is respectively(R/8,0,hs)、
(R/2,0,hs)、 (7R/8,0,hs)、If placed when toilet seat sample to be measured is installed against three planes of reflection, table is measured
Face is 1/4 cylindrical body, the area S of side vertical planes=π Rhs/ 2, the area S of top levelsT=π R2/ 4 (reference body
Long l1With wide l2, i.e., from two face walls to the distance of the opposite face of corresponding reference body).The microphone position coordinate of side the 1st~10
(x, y, z) is respectively Top surface the 1st~6
A microphone position coordinate (x, y, z) is respectively
The sound-pressure-level measurement carries out in the steps below:
It is in addition to retaining the necessary experimental apparatus such as 1 toilet seat sample and tripod to be measured, remaining article in test cabinet is complete
Portion moves away from, and must not have supernumerary on the scene；Experimental implementation person must not dress the clothing of obvious sound absorption characteristics；Using through examining and determine
Qualified thermometer and barometer is measured and records to the indoor air themperature of test and atmospheric pressure；
(2) before being rinsed noise testing to toilet seat sample, its size l first is measured with straight steel ruler and square1、l2、
l3And it records；According to plane of reflection quantity involved by sample mounting means, determines the space orientation of sound source reference body and calculate its spy
Levy size d0；It selects to be applicable in cylindrical body envelope sound source measurement surface and calculates its top horizontal radius surface R and side vertical plane height
Spend hs；According to the microphone position array on selected cylindrical measurement surface, calculates each measuring point coordinate and record；
(3) 1 type instrument requirements in GB/T 3785.1-2010 should be met by measuring sound level meter used, and the re-testing periods are no more than 2
Year；Filter meets 1 type instrument requirements in IEC 61260:1995, and calibration cycle is no more than 1 year.Before each on-test and
After, using meeting the acoustic calibrator of 1 grade of accuracy requirement in GB/T 15173 within the scope of sound level meter measurement frequency
It is verified in one or more frequencies；It reads difference and is not more than 0.5dB；
(4) it can be semi-anechoic room or reverberation chamber that toilet seat, which rinses noise test cabinet, it is ensured that interior can be accorded with using spatial volume
Toilet seat sample installation requirement to be measured is closed, and is had to/drainage condition needed for pre-washing function, test water static pressure is controllable；
Background noise is not more than 16dB (A) in semi-anechoic room, is capable of providing the acoustic condition of proximate freedom field above reflecting surface, calibrating
Period is no more than 5 years；Background noise is not more than 25dB (A) in reverberation chamber, and the reverberation time is 5s~6s；
(5) in test cabinet, according to the microphone position array on selected cylindrical measurement surface, to each measuring point coordinate into
Row positioning；Tripod is moved at point position simultaneously and the sound level meter that will be provided with associated acoustic performance is placed in its top holder,
Ensure that sound wave incident angle is identical when the orientation of microphone is calibrated with it and is perpendicularly oriented to measurement surface；
(6) integral acquired using a complete normal flush cycle (half punching or Quan Chong) as sound level meter sound signal
Time, if toilet seat sample flush cycle to be measured is less than 20s, the time of integration is in terms of 20s；Using the A weighted etc. of sound level meter
The slow time character of weighting " S " of effect sound level measures selected cylindrical body top horizontal measurement surface and side vertical measurement table respectively
The cumulative percent time average sound pressure level L of ambient noise on facepAi(B)(10)TAnd LpAi(B)(10)SAnd it records；In each microphone
It is continuously measured at position 3 times, takes its arithmetic mean of instantaneous value as the sound-pressure-level measurement value of ambient noise at the position.If each position
The difference for setting sound pressure level measured by locating 3 times is greater than 0.5dB, then re-measures and record；
(7) test static pressure is adjusted to 0.35MPa ± 0.05MPa, and water tank is adjusted to its working water bit line mark,
Bath makes closet sample water seal be filled with water to ordinary water level；Then, closet cover board is lifted, is required according to water consumption to be measured, according to
Normal mode starts flushometer and timing；Using a complete normal flush cycle (half punching or Quan Chong) as sound level meter sound
The time of integration of frequency signal acquisition, if the flush cycle of toilet seat sample is less than 20s, the time of integration is in terms of 20s.In circle
Cylinder top horizontal measures and continuously repeats N to toilet seat sample at surface and each microphone position in side vertical measurement surfacee
Secondary flushing operation measures corresponding position q using the fast time character of weighting " F " of the A weighted equivalent sound level of sound level meter respectively
(each flush cycle can be considered an individual noise emission event to a flushing noise emission event；Q=1,2 ... Ne；Ne≥
5) A weighted single event cumulative percent time integral sound pressure level L 'EAi,q(ST)(10)TWith L 'EAi,q(ST)(10)SAnd it records；Simultaneously
Record static pressure, water consumption and the flush cycle washed by water every time.
The acoustic energy grade calculates, and carries out in the steps below:
(1) calculation formula selects: this patent is right in reference GB/T 3767-2016 on the basis of related request
The calculation formula of involved parameters,acoustic provides as follows:
If △ LEA(10)> 15dB, then without carrying out background noise modification；If 6dB≤△ LEA(10)≤ 15dB, then according to
Formula (10) is modified.
K1A=-10lg (1-10-0.1△LEA(10))…………………………………………………(10)
K2A=l0lg (l+4S/A) ... ... ... ... ... ... ... ... ... ... ... ... (11)
Work as K2AWhen≤4dB, the measurement done according to this patent method is effective；Wherein semi-anechoic room and reverberation chamber room
Absorption calculation formula is respectively as follows:
A=α Sν…………………………………………………………………………(12)
A=0.16V/Tn……………………………………………………………………(13)
LJA ref,atm(10)=LJA(10)+C1+C2………………………………………………………(18)
In formula:
L′EAi(ST)(10)T--- N at the microphone position of i-th of surface is measured at the top of cylindrical bodyeTThe secondary flushing noise measured
The average value of single event cumulative percent part time integral sound pressure level, unit are decibel (dB)；
NeT--- the measurement time that noise emission event is individually rinsed at each microphone position in surface is measured at the top of cylindrical body
Number (NeT≥5)；
L′EAi,q(ST)(10)T--- the flushing noise q measured at the microphone position of i-th of surface is measured at the top of cylindrical body
A event (q=1,2 ... Ne；Ne>=5) single event cumulative percent time integral sound pressure level, unit are decibel (dB)；
L′EAi(ST)(10)S--- the N at cylindrical body side measurement i-th of surface microphone positioneSThe secondary flushing noise measured
The average value of single event cumulative percent time integral sound pressure level, unit are decibel (dB)；
NeS--- the measurement time of noise emission event is individually rinsed at the cylindrical body side measurement each microphone position in surface
Number (NeS≥5)；
L′EAi,q(ST)(10)S--- the flushing noise q measured at cylindrical body side measurement i-th of surface microphone position
A event (q=1,2 ... Ne；Ne>=5) single event cumulative percent time integral sound pressure level, unit are decibel (dB)；
--- the flushing noise single event cumulative percent time measured on surface is measured at the top of cylindrical body
The average value of sound pressure level is integrated, unit is decibel (dB)；
NMT--- microphone position number in surface is measured at the top of cylindrical body；
--- in the flushing noise single event cumulative percent measured on the measurement surface of cylindrical body side
Between integrate sound pressure level average value, unit be decibel (dB)；
NMS--- cylindrical body side measures surface microphone position number；
--- the flushing noise single event cumulative percent time product measured on cylindrical measurement surface
Divide the average value of sound pressure level, unit is decibel (dB)；
ST--- the area on measurement surface at the top of cylindrical body, unit are square metre (m2)；
SS--- cylindrical body side measures the area on surface, and unit is square metre (m2)；
--- the ambient noise cumulative percent time average sound pressure measured on surface is measured at the top of cylindrical body
The average value of grade, unit are decibel (dB)；
LpAi(B)(10)T--- the ambient noise accumulative hundred measured at the microphone position of i-th of surface is measured at the top of cylindrical body
Fractional time average sound pressure level, unit are decibel (dB)；
--- the ambient noise cumulative percent time average sound pressure measured on the measurement surface of cylindrical body side
The average value of grade, unit are decibel (dB)；
LpAi(B)(10)S--- in normal flush cycle, measured at cylindrical body side measurement i-th of surface microphone position
Ambient noise cumulative percent time average sound pressure level, unit be decibel (dB)；
--- the ambient noise cumulative percent time average sound pressure level measured on cylindrical measurement surface
Average value, unit be decibel (dB)；
K1A--- background noise modification value；
K2A--- test Environment Correction Value；
S --- the area on cylindrical measurement surface, unit are square metre (m2)；
A --- in test cabinet at 1kHz frequency room equivalent absorption area, unit be square metre (m2)；
The A weighted average sound absorption coefficient of α --- test cabinet room surface, numberical range is referring to GB/T 3767-2016
Middle Table A .1；
Sν--- the gross area (wall, floor, ceiling) of test cabinet room boundaries, unit are square metre (m2)；
V --- test room volume, unit are cubic meter (m3)；
Tn--- the A weighted measured or frequency band reverberation time, unit are the second (s)；
--- the A weighted single thing of each toilet seat sample wash noise measured through cylindrical measurement surface method
Part cumulative percent time integral sound pressure level, unit are decibel (dB)；
LJA(10)--- under testing location and corresponding meteorological condition, each toilet seat sample is answered in normal flush cycle
The A weighted cumulative percent acoustic energy grade for rinsing noise is measured with cylindrical measurement surface method, unit is decibel (dB)；
S0=1m2；
C1--- the function of air characteristics impedance under the meteorological condition in testing time and place；
C2--- standard meteorological conditions will be converted to relative to the practical acoustic energy under testing time and place meteorological condition
The radiation impedance correction value of lower acoustic energy；
ps--- the atmospheric pressure of testing time and place, unit are kPa (kPa)；
ps,0--- standard atmospheric pressure, 101.325kPa；
The air themperature of θ --- testing time and place, unit are degree Celsius (DEG C)；
θ0=314K；
θ1=296K；
LJA ref,atm(10)--- under atmospheric pressure 101.325kPa, 23.0 DEG C of temperature of standard meteorological conditions, what is measured is every
The A weighted cumulative percent acoustic energy grade of a toilet seat sample wash noise, unit are decibel (dB)；
--- the average value of every group of sample wash noise cumulative percent acoustic energy grade, unit are decibel (dB)；
LJA(10)1、LJA(10)2、LJA(10)3--- the A weighted cumulative percent acoustic energy of every group of toilet seat sample wash noise
Grade, unit are decibel (dB)；
--- under atmospheric pressure 101.325kPa, 23.0 DEG C of temperature of standard meteorological conditions, every group of toilet seat
The average value of sample wash noise A weighted cumulative percent acoustic energy grade, unit are decibel (dB)；
LJA ref,atm(10)1、LJA ref,atm(10)2、LJA ref,atm(10)3--- at 23.0 DEG C of atmospheric pressure 101.325kPa, temperature
Standard meteorological conditions under, the A weighted cumulative percent acoustic energy grade of every group of toilet seat sample wash noise, unit is decibel
(dB)；
(2) data revision of the convention requirement: the company measured at the top of cylindrical body and at side measurement i-th of surface microphone position
Continuous NeA toilet seat rinse in noise emission event q-th of event (q=1,2 ... Ne；Ne>=5) A weighted single event is accumulative
Percentage time integral sound pressure level L 'EAi,q(ST)(10)T、L′EAi,q(ST)(10)SAnd its mean value L 'Ei(ST)(10)T、L′Ei(ST)(10)SAnd back
The A weighted cumulative percent time average sound pressure level L of scape noisepAi(B)(10)T、LpAi(B)(10)SIt is effective to retain one decimal place
Number；The continuous N measured on each measurement surface of cylindrical bodyeA toilet seat rinses the A weighted single thing of noise emission event
The average value of part cumulative percent time integral sound pressure levelAnd its A weighted is accumulative
Percentage acoustic energy grade LJA(10)With the A weighted cumulative percent time average sound pressure level average value of ambient noiseCalculated result round numbers；
(3) uncertainty of measurement: the flushing of console mode ceramic pedestal pan is made an uproar on this patent method regulation cylindrical measurement surface
The repeatability standard deviation σ of sound A weighted single event cumulative percent time integral sound pressure level measurement resultomcUpper limit value is little
In 1.5dB.Related content in reference standard GB/T 3767-2016, in a complete normal flush cycle, by same position
Experimenter uses same sound level meter, to selected by the same part console mode ceramic pedestal pan sample of the same installed position
Same cylindrical measurement surface on A weighted single event cumulative percent time integral sound pressure level average valueCarrying out 6 duplicate measurements, (each duplicate measurements, toilet seat sample, which must be reinstalled and be adjusted, to be determined
Position), and background noise modification is carried out to measurement result.Repeatability standard deviation σomcCalculation formula are as follows:
In formula:
--- console mode ceramic pedestal pan rinses noise jth time duplicate measurements and the cylinder after background noise modification
The average value of A weighted single event cumulative percent time integral sound pressure level on bulk measurement surface；
--- the Arithmetical average sound pressure grade being calculated by all repeated measuring results.
6, console mode ceramic pedestal pan according to claim 1 rinses the detection method of noise, which is characterized in that
The evaluation of result carries out in the steps below:
(1) according to national environmental protection specification and product standard requirement, following classification criterion is taken:
Very low to rinse noise, environmental-protecting performance is excellent；
Very low to rinse noise, environmental-protecting performance is good；
Lower to rinse noise, environmental-protecting performance is preferable；
Higher to rinse noise, environmental-protecting performance is poor；
Very high to rinse noise, environmental-protecting performance is inferior.
(2) as some sample wash noise A weighted cumulative percent acoustic energy grade LJA(10)3 sample wash are organized greater than this
Noise A weighted cumulative percent acoustic energy grade LJA(10)Arithmetic mean of instantaneous value10% when, extract one group of sample weight again
Multiple experiment；It is accumulative to calculate the flushing noise that the two groups of toilet seat sample application sound level meters in front and back are measured through cylindrical measurement surface method
Percentage acoustic energy grade LJA(10)Arithmetic mean of instantaneous valueIf some sample wash noise A weighted cumulative percent sound energy
Magnitude LJA(10)Greater than this two groups of 6 sample wash noise A weighted cumulative percent acoustic energy grade LJA(10)Arithmetic mean of instantaneous value10%, then abandon it；Take remaining toilet seat sample wash noise A weighted cumulative percent acoustic energy grade LJA(10)Calculation
Art average valueAs this group of console mode ceramic pedestal pan sample wash noise rating index.
Detailed description of the invention
Fig. 1 is that the console mode ceramic pedestal pan in the present invention on a plane of reflection rinses noise source reference body schematic diagram；
In figure: d0- sound source characteristics size, m；l1The length of-reference body, m；l2The width of-reference body, m；l3- benchmark
The height of body, m；O-coordinate origin；
Fig. 2 is that the console mode ceramic pedestal pan in the present invention on two planes of reflection rinses noise source reference body schematic diagram；
In figure: d0- sound source characteristics size, m；l1The length of-reference body, m；l2The width of-reference body, m；l3- benchmark
The height of body, m；O-coordinate origin；
Fig. 3 is that the console mode ceramic pedestal pan in the present invention on three planes of reflection rinses noise source reference body schematic diagram；
In figure: d0- sound source characteristics size, m；l1The width of-reference body, m；l2The width of-reference body, m；l3- benchmark
The height of body, m；O-coordinate origin；
Fig. 4 is that the cylindrical body side of the console mode ceramic pedestal pan flushing noise source in the present invention on a plane of reflection is hung down
Straight measurement surface and its microphone position array；
In figure: ●-microphone position
(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20)；hs- cylindrical measurement
The height on surface；R-cylindrical body top circular surface radius；
Fig. 5 is the cylindrical body top water of the console mode ceramic pedestal pan flushing noise source in the present invention on a plane of reflection
Flat measurement surface and its microphone position array；
In figure: ●-microphone position (1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16)；R-cylinder
The radius on body top horizontal measurement surface；
Fig. 6 is 1/2 cylinder side of the console mode ceramic pedestal pan flushing noise source in the present invention on two planes of reflection
Portion vertical measurement surface and its microphone position array；
In figure: ●-microphone position (1,2,3,4,5,6,7,8,9,10,11,12,13,14,15)；hs- 1/2 cylinder
The height on bulk measurement surface；The radius of 1/2 circular surface at the top of 1/2 cylindrical body of R-；
Fig. 7 is 1/2 cylindrical body top of the console mode ceramic pedestal pan flushing noise source in the present invention on two planes of reflection
Portion horizontal measurement surface and its microphone position array；
In figure: ●-microphone position (1,2,3,4,5,6,7,8,9)；1/2 cylindrical body top horizontal of R-measures surface
Radius.
Fig. 8 is 1/4 cylinder side of the console mode ceramic pedestal pan flushing noise source in the present invention on three planes of reflection
Portion vertical measurement surface and its microphone position array；
In figure: ●-microphone position (1,2,3,4,5,6,7,8,9,10)；hsThe height on -1/4 cylindrical measurement surface
Degree；The radius of 1/4 circular surface at the top of 1/4 cylindrical body of R-；
Fig. 9 is 1/4 cylindrical body top of the console mode ceramic pedestal pan flushing noise source in the present invention on three planes of reflection
Portion horizontal measurement surface and its microphone position array；
In figure: ●-microphone position (1,2,3,4,5)；The radius on 1/4 cylindrical body top horizontal of R-measurement surface；
Specific embodiment
With reference to the accompanying drawing and preferred embodiment the present invention will be described in detail so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
The present embodiment with originate from Tangshan and internal structure for injection hydrocone type, the nominal water consumption of folk art term be respectively 6L and
The console mode ceramic pedestal pan product of 3L illustrates for flushing noise measuring under the conditions of rushing water consumption entirely.
Specific detection method carries out in the steps below:
(1) sample mounting condition and commissioning requirements
1.1 sample sizes, specification
3 types, specification, the identical porcelain of size or Shi ceramic console mode that same producer, same batch produce are sat
For closet sample as one group, internal structure can fall formula or hydrocone type for punching, use the gravity type flushometer such as flush box
(one-shot formula or double rush formula).
The installation of 1.2 samples
It is equipped with and meets flush box and tank for excrement pan accessory that specified water consumption requires, and the ring of the suitable size of outfit,
Cover board and flange (are the toilet seat sample of heel row formula for drainage pattern, the suitable flange of size should be used its drainage pattern
Lower-discharging type is adjusted to by heel row formula).It supplies water according to the test of water tank type closet as defined in the 8.8.2.1 articles in GB 6952-2015
System standardization debugging routine is debugged the cistern water supply system of toilet seat sample to be measured, Ying Fuhe related request；Punching
The working water level of water tank can satisfy normal flushing process needs, and nominal water consumption is equal with actual used water amount.
The test of 1.3 connection sealings
Installation instructions referring to factory are that toilet seat sample to be measured assembles corresponding flushometer and water inlet pipe, according to GB
The 8.11st article of regulation is attached seal tightness test in 6952-2015, under the test water pressure condition of 0.1MPa, continuously
Keep 15min, connecting line ne-leakage, it is ensured that toilet seat and flushometer have good overall tightness.
1.4 Sample location
Not close to the console mode ceramic pedestal pan sample of any sidewalls when 1.4.1 for installation, if in half noise reduction
It is tested in the acoustic enviroment of proximate freedom field above the reflecting surface of room, sample to be tested directly can be placed in ground center simultaneously
Ensure that its pre-washing function is normal.If tested in rigid plane room or dedicated reverberation chamber, sample is placed on ground
And it is set to be not less than 1.0m at a distance between the walls with any one side, while ensuring that pre-washing function is normal.
It 1.4.2, can be in rigid plane room or dedicated reverberation for the console mode ceramic pedestal pan sample close to wall installation
It is tested in room, sample to be tested is placed on ground, make distance between its back side and close perpendicular walls reflecting surface
For 15cm ± 5cm, and ensure the distance between sample and its indoor excess-three sidewalls not less than 1.5m；Guarantee to rinse simultaneously
Function is normal.
It 1.4.3, can be in rigid plane room or dedicated reverberation for the console mode ceramic pedestal pan sample close to corner installation
It is tested in room, sample to be tested is placed on ground, reflect its back side and side and two close perpendicular walls
Distance is 15cm ± 5cm between face, and ensures that sample is not less than 1.5m at a distance between the walls with indoor in addition two sides；Simultaneously
Guarantee that pre-washing function is normal.
(2) determination on sound source reference body and cylindrical measurement surface
The shape and size of 2.1 toilet seats flushing noise source reference body
With reference to GB/T 3767-2016, " acoustic sound pressure method is measured above Sound Power Level of Noise Source harmony energy level reflecting surface
The engineering method of proximate freedom field " in the 7.1st article of relevant regulations, it is different for tri- kinds of 1.4.1~1.4.3 in the present embodiment
Sample mounting means, corresponding flushing noise source reference body structure difference are as shown in FIG. 1 to 3.With sound source reference body and its
The center of the formed cabinet of mirror image in neighboring reflection plane as coordinate origin O, trunnion axis x and y respectively with the length of reference body
It is parallel with width.Using the horizontal length of toilet seat sample as the length l of sound source reference body1, with the horizontal width of flush box be
The width l of sound source reference body2, vertical range using water tank working water bit line to ground as sound source reference body height l3；It is right
It should be in different test environment conditions, the characteristic size d of sound source reference body0Respectively [(l1/2)2+(l2/2)2+l3 2]1/2(one
A plane of reflection), [l1 2+(l2/2)2+l3 2]1/2(two planes of reflection) and [l1 2+l2 2+l3 2]1/2(three planes of reflection), it is single
Position is rice (m).
The selection on 2.2 cylindrical measurement surfaces and the determination of microphone position array
According to the 7.2.5 articles and the 8.1.3 articles relevant regulations in standard GB/T 3767-2016, circle used by testing
Cylinder measures surface using the coordinate origin of sound source reference body as bottom centre, and the measurement distance to each side of reference body is respectively
d1And d2, the measurement distance to reference body top surface is d3.The gross area S on cylindrical measurement surface is the area S of top levelsT
With the area S of side vertical planesThe sum of, the radius R=l of cylindrical body1/2+d1=l2/2+d2, high hs=l3+d3；L in formula1、l2
And l3The respectively length and width and height of reference body, wherein l1≥l2, d1=d3=1.0m, d2=R-l2/2；d1≤1.5d2And d1≤
1.5d3, d2≤1.5d1And d2≤1.5d3, d3≤1.5d1And d3≤1.5d2；Unit is rice (m).
2.2.1 if console mode ceramic pedestal pan sample to be measured is determined when installing according to the 1.4.1 articles in the present embodiment
Position, then measuring surface is a complete cylindrical body, the area S of side vertical planes=2 π Rhs, the area of top levels
ST=π R2；It measures surface and its microphone position array is as shown in Figure 4 and Figure 5, the microphone position coordinate of side the 1st~20
(x, y, z) is respectively (- R, 0,9hs/10)、(-R,0,7hs/10)、(-R,0,5hs/10)、 (-R,0,3hs/10)、(-R,0,hs/
10)、(R,0,9hs/10)、(R,0,7hs/10)、(R,0,5hs/10)、 (R,0,3hs/10)、(R,0,hs/10)、(0,-R,9hs/
10)、(0,R,9hs/10)、(0,-R,7hs/10)、 (0,R,7hs/10)、(0,-R,5hs/10)、(0,R,5hs/10)、(0,-R,
5hs/10)、(0,R,5hs/10)、 (0,-R,3hs/10)、(0,R,3hs/10)、(0,-R,hs/10)、(0,R,hs/10)；Top surface
1st~16 microphone position coordinate (x, y, z) is respectively (0,7R/8, hs)、(0,5R/8,hs)、(0,3R/8,hs)、 (0,
R/8,hs)、(7R/8,0,hs)、(5R/8,0,hs)、(3R/8,0,hs)、(R/8,0,hs)、(0,-7R/8,hs)、 (0,-5R/8,
hs)、(0,-3R/8,hs)、(0,-R/8,hs)、(-7R/8,0,hs)、(-5R/8,0,hs)、(-3R/8,0,hs)、(-R/8,0,
hs)。。
2.2.2 if console mode ceramic pedestal pan sample to be measured is determined when installing according to the 1.4.2 articles in the present embodiment
Position, then measuring surface is 1/2 cylindrical body, the area S of side vertical planes=π Rhs, the area S of top levelsT=π R2/2
(the long l of sound source reference body1, i.e., from wall to the distance of corresponding reference body front end face)；Measure surface and its microphone position battle array
As shown in Figure 6 and Figure 7, the microphone position coordinate (x, y, z) of side the 1st~15 is respectively (0 ,-R, 9h to columns/10)、(0,-
R,7hs/10)、(0,-R,5hs/10)、(0,-R,3hs/10)、(0,-R,hs/10)、 The microphone position coordinate of top surface the 1st~9
(x, y, z) is respectively(R/8,0,hs)、 (R/2,0,hs)、 (7R/
8,0,hs)、
2.2.3 if console mode ceramic pedestal pan sample to be measured is determined when installing according to the 1.4.3 articles in the present embodiment
Position, then measuring surface is 1/4 cylindrical body, the area S of side vertical planes=π Rhs/ 2, the area S of top levelsT=π
R2/ 4 (the long l of reference body1With wide l2, i.e., from two face walls to the distance of the opposite face of corresponding reference body)；Measure surface and its biography
Sound device position array is as shown in Figure 8 and Figure 9, and the microphone position coordinate (x, y, z) of side the 1st~10 is respectively The microphone position coordinate (x, y, z) of top surface the 1st~6 is respectively
(3) sound-pressure-level measurement
3.1 in addition to retaining the necessary experimental apparatus such as 1 toilet seat sample and tripod to be measured, by remaining article in test cabinet
It all moves away from, must not have supernumerary on the scene；Experimental implementation person must not dress the clothing of obvious sound absorption characteristics；Using through examining
Fixed qualified thermometer and barometer are measured and record to the indoor air themperature of test and atmospheric pressure.
Before 3.2 pairs of toilet seat samples are rinsed noise testing, its size l first is measured with straight steel ruler and square1、l2、
l3And it records；According to plane of reflection quantity involved by sample mounting means, determines the space orientation of sound source reference body and calculate its spy
Levy size d0；It selects to be applicable in cylindrical body envelope sound source measurement surface and calculates its top horizontal radius surface R and side vertical plane height
Spend hs；According to the microphone position array on selected cylindrical measurement surface, calculates each measuring point coordinate and record.
3.3, which measure sound level meter used, should meet 1 type instrument requirements in GB/T 3785.1-2010, and the re-testing periods are no more than 2
Year；Filter meets 1 type instrument requirements in IEC 61260:1995, and calibration cycle is no more than 1 year.Before each on-test and
After, using meeting the acoustic calibrator of 1 grade of accuracy requirement in GB/T 15173 within the scope of sound level meter measurement frequency
It is verified in one or more frequencies；It reads difference and is not more than 0.5dB.
It can be semi-anechoic room or reverberation chamber that 3.4 toilet seats, which rinse noise test cabinet, it is ensured that interior can be accorded with using spatial volume
Toilet seat sample installation requirement to be measured is closed, and is had to/drainage condition needed for pre-washing function, test water static pressure is controllable；
Background noise is not more than 16dB (A) in semi-anechoic room, is capable of providing the acoustic condition of proximate freedom field above reflecting surface, calibrating
Period is no more than 5 years；Background noise is not more than 25dB (A) in reverberation chamber, and the reverberation time is 5s~6s.
3.5 in test cabinet, according to the microphone position array on selected cylindrical measurement surface, to each measuring point coordinate into
Row positioning；Tripod is moved at point position simultaneously and the sound level meter that will be provided with associated acoustic performance is placed in its top holder,
Ensure that sound wave incident angle is identical when the orientation of microphone is calibrated with it and is perpendicularly oriented to measurement surface.
3.6 integrals acquired using a complete normal flush cycle (half punching or Quan Chong) as sound level meter sound signal
Time, if toilet seat sample flush cycle to be measured is less than 20s, the time of integration is in terms of 20s；Using the A weighted etc. of sound level meter
The slow time character of weighting " S " of effect sound level measures selected cylindrical body top horizontal measurement surface and side vertical measurement table respectively
The cumulative percent time average sound pressure level L of ambient noise on facepAi(B)(10)TAnd LpAi(B)(10)SAnd it records；In each microphone
It is continuously measured at position 3 times, takes its arithmetic mean of instantaneous value as the sound-pressure-level measurement value of ambient noise at the position.If each position
The difference for setting sound pressure level measured by locating 3 times is greater than 0.5dB, then re-measures and record.
Test static pressure is adjusted to 0.35MPa ± 0.05MPa by 3.7, and water tank is adjusted to its working water bit line mark,
Bath makes closet sample water seal be filled with water to ordinary water level；Then, closet cover board is lifted, is required according to water consumption to be measured, according to
Normal mode starts flushometer and timing；Using a complete normal flush cycle (half punching or Quan Chong) as sound level meter sound
The time of integration of frequency signal acquisition, if the flush cycle of toilet seat sample is less than 20s, the time of integration is in terms of 20s.In circle
Cylinder top horizontal measures and continuously repeats N to toilet seat sample at surface and each microphone position in side vertical measurement surfacee
Secondary flushing operation measures corresponding position q using the fast time character of weighting " F " of the A weighted equivalent sound level of sound level meter respectively
(each flush cycle can be considered an individual noise emission event to a flushing noise emission event；Q=1,2 ... Ne；Ne≥
5) A weighted single event cumulative percent time integral sound pressure level L 'EAi,q(ST)(10)TWith L 'EAi,q(ST)(10)SAnd it records；Simultaneously
Record static pressure, water consumption and the flush cycle washed by water every time.
(4) result calculates
The selection of 4.1 calculation formula: the present embodiment in reference GB/T 3767-2016 on the basis of related request,
The calculation formula of involved parameters,acoustic is provided as follows:
If △ LEA(10)> 15dB, then without carrying out background noise modification；If 6dB≤△ LEA(10)≤ 15dB, then according to
Formula (10) is modified.
K1A=-10lg (1-10-0.1△LEA(10))……………………………………………………(10)
K2A=l0lg (l+4S/A) ... ... ... ... ... ... ... ... ... ... ... ... (11)
Work as K2AWhen≤4dB, the measurement done according to this patent method is effective；Wherein semi-anechoic room and reverberation chamber room
Absorption calculation formula is respectively as follows:
A=α Sν………………………………………………………………………(12)
A=0.16V/Tn……………………………………………………………………(13)
LJA ref,atm(10)=LJA(10)+C1+C2………………………………………………………(18)
In formula:
L′EAi(ST)(10)T--- N at the microphone position of i-th of surface is measured at the top of cylindrical bodyeTThe secondary flushing noise measured
The average value of single event cumulative percent part time integral sound pressure level, unit are decibel (dB)；
NeT--- the measurement time that noise emission event is individually rinsed at each microphone position in surface is measured at the top of cylindrical body
Number (NeT≥5)；
L′EAi,q(ST)(10)T--- the flushing noise q measured at the microphone position of i-th of surface is measured at the top of cylindrical body
A event (q=1,2 ... Ne；Ne>=5) single event cumulative percent time integral sound pressure level, unit are decibel (dB)；
L′EAi(ST)(10)S--- the N at cylindrical body side measurement i-th of surface microphone positioneSThe secondary flushing noise measured
The average value of single event cumulative percent time integral sound pressure level, unit are decibel (dB)；
NeS--- the measurement time of noise emission event is individually rinsed at the cylindrical body side measurement each microphone position in surface
Number (NeS≥5)；
L′EAi,q(ST)(10)S--- the flushing noise q measured at cylindrical body side measurement i-th of surface microphone position
A event (q=1,2 ... Ne；Ne>=5) single event cumulative percent time integral sound pressure level, unit are decibel (dB)；
--- when measuring the flushing noise single event cumulative percent measured on surface at the top of cylindrical body
Between integrate sound pressure level average value, unit be decibel (dB)；
NMT--- microphone position number in surface is measured at the top of cylindrical body；
--- the flushing noise single event cumulative percent time measured on the measurement surface of cylindrical body side
The average value of sound pressure level is integrated, unit is decibel (dB)；
NMS--- cylindrical body side measures surface microphone position number；
--- the flushing noise single event cumulative percent time product measured on cylindrical measurement surface
Divide the average value of sound pressure level, unit is decibel (dB)；
ST--- the area on measurement surface at the top of cylindrical body, unit are square metre (m2)；
SS--- cylindrical body side measures the area on surface, and unit is square metre (m2)；
--- the ambient noise cumulative percent time average sound pressure measured on surface is measured at the top of cylindrical body
The average value of grade, unit are decibel (dB)；
LpAi(B)(10)T--- the ambient noise accumulative hundred measured at the microphone position of i-th of surface is measured at the top of cylindrical body
Fractional time average sound pressure level, unit are decibel (dB)；
--- the ambient noise cumulative percent time average sound pressure measured on the measurement surface of cylindrical body side
The average value of grade, unit are decibel (dB)；
LpAi(B)(10)S--- in normal flush cycle, measured at cylindrical body side measurement i-th of surface microphone position
Ambient noise cumulative percent time average sound pressure level, unit be decibel (dB)；
--- the ambient noise cumulative percent time average sound pressure level measured on cylindrical measurement surface
Average value, unit are decibel (dB)；
K1A--- background noise modification value；
K2A--- test Environment Correction Value；
S --- the area on cylindrical measurement surface, unit are square metre (m2)；
A --- in test cabinet at 1kHz frequency room equivalent absorption area, unit be square metre (m2)；
The A weighted average sound absorption coefficient of α --- test cabinet room surface, numberical range is referring to GB/T 3767-2016
Middle Table A .1；
Sν--- the gross area (wall, floor, ceiling) of test cabinet room boundaries, unit are square metre (m2)；
V --- test room volume, unit are cubic meter (m3)；
Tn--- the A weighted measured or frequency band reverberation time, unit are the second (s)；
--- the A weighted single thing of each toilet seat sample wash noise measured through cylindrical measurement surface method
Part cumulative percent time integral sound pressure level, unit are decibel (dB)；
LJA(10)--- under testing location and corresponding meteorological condition, each toilet seat sample is answered in normal flush cycle
The A weighted cumulative percent acoustic energy grade for rinsing noise is measured with cylindrical measurement surface method, unit is decibel (dB)；
S0=1m2；
C1--- the function of air characteristics impedance under the meteorological condition in testing time and place；
C2--- standard meteorological conditions will be converted to relative to the practical acoustic energy under testing time and place meteorological condition
The radiation impedance correction value of lower acoustic energy；
ps--- the atmospheric pressure of testing time and place, unit are kPa (kPa)；
ps,0--- standard atmospheric pressure, 101.325kPa；
The air themperature of θ --- testing time and place, unit are degree Celsius (DEG C)；
θ0=314K；
θ1=296K；
LJA ref,atm(10)--- under atmospheric pressure 101.325kPa, 23.0 DEG C of temperature of standard meteorological conditions, what is measured is every
The A weighted cumulative percent acoustic energy grade of a toilet seat sample wash noise, unit are decibel (dB)；
--- the average value of every group of sample wash noise cumulative percent acoustic energy grade, unit are decibel (dB)；
LJA(10)1、LJA(10)2、LJA(10)3--- the A weighted cumulative percent acoustic energy of every group of toilet seat sample wash noise
Grade, unit are decibel (dB)；
--- under atmospheric pressure 101.325kPa, 23.0 DEG C of temperature of standard meteorological conditions, every group of toilet seat
The average value of sample wash noise A weighted cumulative percent acoustic energy grade, unit are decibel (dB)；
LJA ref,atm(10)1、LJA ref,atm(10)2、LJA ref,atm(10)3--- at 23.0 DEG C of atmospheric pressure 101.325kPa, temperature
Standard meteorological conditions under, the A weighted cumulative percent acoustic energy grade of every group of toilet seat sample wash noise, unit is decibel
(dB)。
4.2 data revisions of the convention requirement: the company measured at the top of cylindrical body and at side measurement i-th of surface microphone position
Continuous NeA toilet seat rinse in noise emission event q-th of event (q=1,2 ... Ne；Ne>=5) A weighted single event is accumulative
Percentage time integral sound pressure level L 'EAi,q(ST)(10)T、L′EAi,q(ST)(10)SAnd its mean value L 'Ei(ST)(10)T、L′Ei(ST)(10)SAnd back
The A weighted cumulative percent time average sound pressure level L of scape noisepAi(B)(10)T、LpAi(B)(10)SIt is effective to retain one decimal place
Number；The continuous N measured on each measurement surface of cylindrical bodyeA toilet seat rinses the A weighted single thing of noise emission event
The average value of part cumulative percent time integral sound pressure levelAnd its A weighted is accumulative
Percentage acoustic energy grade LJA(10)With the A weighted cumulative percent time average sound pressure level average value of ambient noiseCalculated result round numbers.
4.3 uncertainties of measurement: the flushing of console mode ceramic pedestal pan is made an uproar on this patent method regulation cylindrical measurement surface
The repeatability standard deviation σ of sound A weighted single event cumulative percent time integral sound pressure level measurement resultomcUpper limit value is little
In 1.5dB.Related content in reference standard GB/T 3767-2016, in a complete normal flush cycle, by same position
Experimenter uses same sound level meter, to selected by the same part console mode ceramic pedestal pan sample of the same installed position
Same cylindrical measurement surface on A weighted single event cumulative percent time integral sound pressure level average valueCarrying out 6 duplicate measurements, (each duplicate measurements, toilet seat sample, which must be reinstalled and be adjusted, to be determined
Position), and background noise modification is carried out to measurement result.Repeatability standard deviation σomcCalculation formula are as follows:
In formula:
--- console mode ceramic pedestal pan rinses noise jth time duplicate measurements and the cylinder after background noise modification
The average value of A weighted single event cumulative percent time integral sound pressure level on bulk measurement surface；
--- the Arithmetical average sound pressure grade being calculated by all repeated measuring results.
5, console mode ceramic pedestal pan according to claim 1 rinses the detection method of noise, which is characterized in that
The evaluation of result carries out in the steps below:
5.1, according to national environmental protection specification and products standards requirement, take following classification criterion:
Very low to rinse noise, environmental-protecting performance is excellent；
Very low to rinse noise, environmental-protecting performance is good；
Lower to rinse noise, environmental-protecting performance is preferable；
Higher to rinse noise, environmental-protecting performance is poor；
Very high to rinse noise, environmental-protecting performance is inferior.
5.2 work as some sample wash noise A weighted cumulative percent acoustic energy grade LJA(10)3 sample wash are organized greater than this
Noise A weighted cumulative percent acoustic energy grade LJA(10)Arithmetic mean of instantaneous value10% when, extract one group of sample weight again
Multiple experiment；It is accumulative to calculate the flushing noise that the two groups of toilet seat sample application sound level meters in front and back are measured through cylindrical measurement surface method
Percentage acoustic energy grade LJA(10)Arithmetic mean of instantaneous valueIf some sample wash noise A weighted cumulative percent sound energy
Magnitude LJA(10)Greater than this two groups of 6 sample wash noise A weighted cumulative percent acoustic energy grade LJA(10)Arithmetic mean of instantaneous value10%, then abandon it；Take remaining toilet seat sample wash noise A weighted cumulative percent acoustic energy grade LJA(10)Calculation
Art average valueAs this group of console mode ceramic pedestal pan sample wash noise rating index.
Test facilities, instrument and equipment used in the present embodiment and test equipment:
(1) test facilities
Semi-anechoic room: interior architecture dead size is 9.8m × 7.3m × 5.9m, and peace hangs useful space size after wedge absorber
For 7.8m × 5.3m × 4.9m, dischargeable capacity 203m3, effective usable floor area is 41m2.Using tile floor as individual reflection
Plane, it is indoor except be equipped with accordingly to/drainage pipeline and air-conditioning in addition to again without other fixation means；When laboratory normal operation, week
When enclosing interference without exception, chamber background noise is lower than 14.1dB (A)；The expanded uncertainty of sound pressure level measurements is U95=
(0.4~1.0) dB, k=2.
(2) testing equipment and equipment
2.1 sound level meters: Japanese Li Yin company production, can measure equivalent continuous acoustic pressure L at model NA-28eq, performance meets
1 type integrating sound level meter provides in GB/T 3785, and filter meets the requirement of GB 3241；A weighted linear operate range be 25dB~
130dB, peak sound level measure the upper limit be 143dB, natural noise A weight maximum value be 17dB, measurement frequency range be 10Hz~
20kHz, sampling period 15.6ms.Sound pressure level uncertainty U=0.4dB~1.0dB (k=2)；Sound pressure level at reference frequency
Uncertainty U=0.07dB (k=2)；The uncertainty of calibration result is U=1.0dB (k=2).
2.2 acoustic calibrators: the production of hundred million Europe instrumentation Co., Ltds, model AWA6221A, for the absolute of sound level meter
Pressure calibration, acoustical behavior meet 1 grade of accuracy requirement in GB/T 15173；Nominal sound pressure level is 94dB and 114dB (with 20 μ
On the basis of Pa), being applicable in frequency range is 1kHz~5Hz, and sound pressure level accuracy is ± 0.2dB (23 DEG C) and (- 10 DEG C of ± 0.3dB
~50 DEG C), total harmonic distortion≤1% when 94dB.
2.3 rulers: scale division value is straight steel ruler, the square of 1mm.
2.4 water seal rulers: scale division value 1mm.
2.5 thermometers: range is that 0 DEG C ~ 100 DEG C scale division values are 0.2 DEG C.
2.6 aneroid pressure meters: measurement range is 800hPa~1060hPa, and the indicating value limits of error are ± 1.0hPa.
2.7 stopwatches: precision 0.01s.
2.8 tripods: carbon fiber or aluminum alloy material, load-bearing 10kg or more, the 2.0m of maximum height containing holder.
The detection data and result of the present embodiment calculate:
In semi-anechoic room, examined using flushing noise of the cylindrical measurement surface method to console mode ceramic pedestal pan
It surveys, coherent detection data and evaluation of result are shown in Table 1.
1 console mode ceramic pedestal pan of table rinses noise measuring data (plane of reflection)
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent transformation made by bright specification and accompanying drawing content, is applied directly or indirectly in other relevant technical fields, and includes
In scope of patent protection of the invention.
Claims (6)
1. the detection method that a kind of console mode ceramic pedestal pan rinses noise, comprising: (1) sample installation and debugging；(2) sound source base
Quasi- body and cylindrical measurement surface determine；(3) sound-pressure-level measurement；(4) acoustic energy grade calculates and ambient noise, test environment are gentle
As condition is corrected；(5) evaluation；It is characterized in that, special using the fast time weighted of the A weighted equivalent sound level of sound level meter
Property " F " on cylindrical measurement surface with cumulative percent acoustic energy grade LJA(10)The console mode ceramic pedestal pan flushing of characterization is made an uproar
Sound carries out accurate quantitative detection, specific:
In sound-pressure-level measurement:
In semi-anechoic room or reverberation chamber, for console mode ceramic pedestal pan sample installation requirement, different plane of reflection items are determined
The positioning of sound source reference body and its sound source characteristics size d is calculated under part0；Selection is corresponding with toilet seat flushing noise source reference body
Cylindrical measurement surface and be really sized, specify it is different measurement surfaces on microphone position array coordinates.With console mode
The time of integration that the normal flush cycle of ceramic pedestal pan is acquired as sound signal；Using sound level meter A weighted equivalent sound level
Slow time character of weighting " S " measures the cumulative percent time average sound pressure level of ambient noise on selected cylindrical measurement surface
LpAi(B)(10)T、LpAi(B)(10)S；Then under the conditions of the test static pressure of 0.35MPa ± 0.05MPa, start flushometer, to seat
Closet sample continuously repeats NeSecondary flushing operation.For different washing water quantity test requests, selected cylindrical measurement table is measured
(each flush cycle can be considered an individual noise hair to q-th of flushing noise emission event at i-th of microphone position on face
Penetrate event；Q=1,2 ... Ne；Ne>=5) A weighted single event cumulative percent time integral sound pressure level L 'EAi,q(ST)(10)T、
L′EAi,q(ST)(10)S；
In the calculating of acoustic energy grade:
According to related notion and calculation formula in GB/T 3767-2016, sound level meter is measured on selected cylindrical measurement surface
Ambient noise A weighted cumulative percent time average sound pressure level LpAi(B)(10)T、LpAi(B)(10)SAnd connect at each microphone position
Continuous NeQ-th event in a flushing noise emission event (q=1,2 ... Ne；Ne>=5) A weighted single event cumulative percent
Time integral sound pressure level L 'EAi,q(ST)(10)T、L′EAi,q(ST)(10)SAs basic data, its mean value is calculated
And L 'Ei(ST)(10)T、L′Ei(ST)(10)S；It is derived from continuous N on cylindrical measurement surfaceeA toilet seat rinses noise emission event
A weighted single event cumulative percent time integral sound pressure level average value WithIt is right
Ambient noise, test environment and meteorological condition are modified；Calculate continuous N on cylindrical measurement surfaceeA toilet seat flushing is made an uproar
The A weighted single event cumulative percent time integral sound pressure level of acoustie emission eventObtain each sample wash noise
A weighted cumulative percent acoustic energy grade LJA(10)And every group of sample wash noise A weighted cumulative percent acoustic energy grade is averaged
ValueSpecify the related data revision of the convention and uncertainty of measurement requirement；
In evaluation of result:
As some sample wash noise A weighted cumulative percent acoustic energy grade LJA(10)3 sample wash noise A meters are organized greater than this
Weigh cumulative percent acoustic energy grade LJA(10)Arithmetic mean of instantaneous value10% when, extract one group of sample again and repeat to test；And
Calculate slow time character of weighting " S " warp of two groups of front and back console mode ceramic pedestal pan sample application sound level meter A weighted equivalent sound level
The flushing noise cumulative percent acoustic energy grade L that cylindrical measurement surface method measuresJA(10)Arithmetic mean of instantaneous valueIf certain
A sample wash noise A weighted cumulative percent acoustic energy grade LJA(10)It is accumulative greater than this two groups of 6 sample wash noise A weighteds
Percentage acoustic energy grade LJA(10)Arithmetic mean of instantaneous value10%, then abandon it；Take remaining toilet seat sample wash noise A weighted
Cumulative percent acoustic energy grade LJA(10)Arithmetic mean of instantaneous valueAs this group of console mode ceramic pedestal pan sample wash noise
Evaluation index.
2. the detection method that console mode ceramic pedestal pan according to claim 1 rinses noise, which is characterized in that described
Sample installation and debugging, carry out in the steps below:
(1) 3 types, specification, the identical porcelain of size or the Shi ceramic console mode toilet seat for producing same producer, same batch
For device sample as one group, internal structure is that punching falls formula or hydrocone type；
(2) be equipped with and meet flush box and cistern fittings that specified water consumption requires, and be equipped with the ring for being suitble to size, cover board and
Flange (is the toilet seat sample of heel row formula for drainage pattern, should use the suitable flange of size by its drainage pattern by heel row
Formula is adjusted to lower-discharging type), water system standard is tested according to water tank type closet as defined in the 8.8.2.1 articles in GB 6952-2015
Change debugging routine, the cistern water supply system of toilet seat sample to be measured is debugged；The working water level of flush box can satisfy
Normal flushing process needs, and nominal water consumption is equal with actual used water amount；
It (3) is that toilet seat sample to be measured assembles corresponding flushometer and water inlet pipe referring to the installation instructions of factory, according to GB
The 8.11st article of regulation is attached seal tightness test in 6952-2015, continuous to protect under the test water pressure condition of 0.1MPa
Hold 15min, connecting line ne-leakage, it is ensured that toilet seat and flushometer have good overall tightness；
(4) for installation not close to the console mode ceramic pedestal pan sample of any sidewalls when, if reflected in semi-anechoic room
It is tested in the acoustic enviroment of proximate freedom field above face, sample to be tested directly can be placed in ground center and ensures its punching
It is normal to wash function.If tested in rigid plane room or dedicated reverberation chamber, sample is placed on ground and make its with
The distance of any one side between the walls is not less than 1.0m, while ensuring that pre-washing function is normal；
(5) for close to wall installation console mode ceramic pedestal pan sample, can in rigid plane room or dedicated reverberation chamber into
Row test, sample to be tested is placed on ground, distance 15cm between its back side and close perpendicular walls reflecting surface is made
± 5cm, and ensure the distance between sample and its indoor excess-three sidewalls not less than 1.5m；Guarantee pre-washing function just simultaneously
Often；
(6) for close to corner installation console mode ceramic pedestal pan sample, can in rigid plane room or dedicated reverberation chamber into
Row test, sample to be tested is placed on ground, is made between its back side and side and two close perpendicular walls reflectings surface
Distance is 15cm ± 5cm, and ensures that sample is not less than 1.5m at a distance between the walls with indoor in addition two sides；Guarantee to rinse simultaneously
Function is normal.
3. the detection method that console mode ceramic pedestal pan according to claim 1 rinses noise, which is characterized in that described
The determination on sound source reference body and cylindrical measurement surface carries out in the steps below:
(1) toilet seat rinses the determination of noise source reference body shape and size: with reference to the 7.1st article of correlation in GB/T 3767-2016
Regulation, the center of the formed cabinet of mirror image using sound source reference body and its in neighboring reflection plane are horizontal as coordinate origin O
Axis x and y are parallel with the length of reference body and width respectively.Using the horizontal length of toilet seat sample as the length l of sound source reference body1、
Using the horizontal width of flush box as the width l of sound source reference body2, vertical range using water tank working water bit line to ground as
The height l of sound source reference body3；Corresponding to different test environment conditions, the characteristic size d of sound source reference body0Respectively [(l1/
2)2+(l2/2)2+l3 2]1/2(plane of reflection), [l1 2+(l2/2)2+l3 2]1/2(two planes of reflection) and [l1 2+l2 2+l3 2]1/2
(three planes of reflection), unit are rice (m)；
(2) determination of cylindrical measurement surface and its microphone position array: according to 7.2.5 in standard GB/T 3767-2016
Article and the 8.1.3 articles relevant regulations, test used by cylindrical measurement surface using the coordinate origin of sound source reference body as bottom
Center, the measurement distance to each side of reference body is respectively d1And d2, the measurement distance to reference body top surface is d3.Cylindrical body is surveyed
The gross area S in scale face is the area S of top levelsTWith the area S of side vertical planesThe sum of, the radius R=l of cylindrical body1/
2+d1=l2/2+d2, high hs=l3+d3；L in formula1、l2And l3The respectively length and width and height of reference body, wherein l1≥l2, d1=d3
=1.0m, d2=R-l2/2；d1≤1.5d2And d1≤1.5d3, d2≤1.5d1And d2≤1.5d3, d3≤1.5d1And d3≤1.5d2；
Unit is rice (m).If be located on a plane of reflection when console mode ceramic pedestal pan sample to be measured is installed, measuring surface is
One complete cylindrical body, the area S of side vertical planes=2 π Rhs, the area S of top levelsT=π R2.Side the 1st~
20 microphone position coordinates (x, y, z) are respectively (- R, 0,9hs/10)、(-R,0,7hs/10)、(-R,0,5hs/10)、(-R,
0,3hs/10)、(-R,0,hs/10)、(R,0,9hs/10)、(R,0,7hs/10)、(R,0,5hs/10)、(R,0,3hs/10)、(R,
0,hs/10)、(0,-R,9hs/10)、(0,R,9hs/10)、(0,-R,7hs/10)、(0,R,7hs/10)、(0,-R,5hs/10)、
(0,R,5hs/10)、(0,-R,5hs/10)、(0,R,5hs/10)、(0,-R,3hs/10)、(0,R,3hs/10)、(0,-R,hs/
10)、(0,R,hs/10)；The microphone position coordinate (x, y, z) of top surface the 1st~16 is respectively (0,7R/8, hs)、(0,5R/8,
hs)、(0,3R/8,hs)、(0,R/8,hs)、(7R/8,0,hs)、(5R/8,0,hs)、(3R/8,0,hs)、(R/8,0,hs)、(0,-
7R/8,hs)、(0,-5R/8,hs)、(0,-3R/8,hs)、(0,-R/8,hs)、(-7R/8,0,hs)、(-5R/8,0,hs)、(-3R/
8,0,hs)、(-R/8,0,hs).If placed when toilet seat sample to be measured is installed close to two planes of reflection, measuring surface is
1/2 cylindrical body, the area S of side vertical planes=π Rhs, the area S of top levelsT=π R2/ 2 (length of sound source reference body
l1, i.e., from wall to the distance of corresponding reference body front end face)；The microphone position coordinate (x, y, z) of side the 1st~15 is respectively
(0,-R,9hs/10)、(0,-R,7hs/10)、(0,-R,5hs/10)、(0,-R,3hs/10)、(0,-R,hs/10)、 The microphone position coordinate of top surface the 1st~9 (x, y,
Z) it is respectively(R/8,0,hs)、
(R/2,0,hs)、(7R/8,0,hs)、If placed when toilet seat sample to be measured is installed against three planes of reflection, table is measured
Face is 1/4 cylindrical body, the area S of side vertical planes=π Rhs/ 2, the area S of top levelsT=π R2/ 4 (reference body
Long l1With wide l2, i.e., from two face walls to the distance of the opposite face of corresponding reference body).The microphone position coordinate of side the 1st~10
(x, y, z) is respectively Top surface the 1st~6
A microphone position coordinate (x, y, z) is respectively
4. the detection method that console mode ceramic pedestal pan according to claim 1 rinses noise, which is characterized in that described
Sound-pressure-level measurement carries out in the steps below:
(1) in addition to retaining the necessary experimental apparatus such as 1 toilet seat sample and tripod to be measured, remaining article in test cabinet is whole
It moves away from, must not have supernumerary on the scene；Experimental implementation person must not dress the clothing of obvious sound absorption characteristics；Using through assay approval
Thermometer and barometer to testing indoor air themperature and atmospheric pressure is measured and records；
(2) before being rinsed noise testing to toilet seat sample, its size l first is measured with straight steel ruler and square1、l2、l3And remember
Record；According to plane of reflection quantity involved by sample mounting means, determines the space orientation of sound source reference body and calculate its characteristic size
d0；It selects to be applicable in cylindrical body envelope sound source measurement surface and calculates its top horizontal radius surface R and side vertical plane height hs；It presses
According to the microphone position array on selected cylindrical measurement surface, calculates each measuring point coordinate and record；
(3) 1 type instrument requirements in GB/T 3785.1-2010 should be met by measuring sound level meter used, and the re-testing periods are no more than 2 years；Filter
Wave device meets 1 type instrument requirements in IEC 61260:1995, and calibration cycle is no more than 1 year.Before each on-test and after,
Using meeting one or more of the acoustic calibrator of 1 grade of accuracy requirement in GB/T 15173 within the scope of sound level meter measurement frequency
It is verified in a frequency；It reads difference and is not more than 0.5dB；
(4) toilet seat rinse noise test cabinet can be semi-anechoic room or reverberation chamber, it is ensured that interior can utilize spatial volume meet to
Toilet seat sample installation requirement is surveyed, and is had to/drainage condition needed for pre-washing function, test water static pressure is controllable；Partly disappear
Background noise is not more than 16dB (A) in tone chamber, is capable of providing the acoustic condition of proximate freedom field above reflecting surface, the re-testing periods are not
More than 5 years；Background noise is not more than 25dB (A) in reverberation chamber, and the reverberation time is 5s~6s；
(5) in test cabinet, according to the microphone position array on selected cylindrical measurement surface, each measuring point coordinate is determined
Position；Tripod is moved at point position simultaneously and the sound level meter that will be provided with associated acoustic performance is placed in its top holder, it is ensured that
Sound wave incident angle is identical when the orientation of microphone is calibrated with it and is perpendicularly oriented to measurement surface；
(6) time of integration acquired using a complete normal flush cycle (half punching or Quan Chong) as sound level meter sound signal,
If toilet seat sample flush cycle to be measured is less than 20s, the time of integration is in terms of 20s；Using the A weighted equivalent sound level of sound level meter
Slow time character of weighting " S " measure background on selected cylindrical body top horizontal measurement surface and side vertical measurement surface respectively
The cumulative percent time average sound pressure level L of noisepAi(B)(10)TAnd LpAi(B)(10)SAnd it records；Connect at each microphone position
Continuous measurement 3 times, takes its arithmetic mean of instantaneous value as the sound-pressure-level measurement value of ambient noise at the position.If 3 institutes at each position
The difference of the sound pressure level measured is greater than 0.5dB, then re-measures and record；
(7) test static pressure is adjusted to 0.35MPa ± 0.05MPa, and water tank is adjusted to its working water bit line mark, bath makes
Closet sample water seal is filled with water to ordinary water level；Then, closet cover board is lifted, is required according to water consumption to be measured, according to normal side
Formula starts flushometer and timing；It is adopted using a complete normal flush cycle (half punching or Quan Chong) as sound level meter sound signal
The time of integration of collection, if the flush cycle of toilet seat sample is less than 20s, the time of integration is in terms of 20s.In cylindrical body top water
N continuously is repeated to toilet seat sample at flat measurement surface and each microphone position in side vertical measurement surfaceeSecondary flushing operation,
Q-th of corresponding position flushing noise hair is measured respectively using the fast time character of weighting " F " of the A weighted equivalent sound level of sound level meter
Penetrating event, (each flush cycle can be considered an individual noise emission event；Q=1,2 ... Ne；Ne>=5) A weighted single
Event cumulative percent time integral sound pressure level L 'EAi,q(ST)(10)TWith L 'EAi,q(ST)(10)SAnd it records；Bath every time is recorded simultaneously
Static pressure, water consumption and flush cycle.
5. the detection method that console mode ceramic pedestal pan according to claim 1 rinses noise, which is characterized in that described
Acoustic energy grade calculates, and carries out in the steps below:
(1) calculation formula selects: this patent is in reference GB/T 3767-2016 on the basis of related request, to involved sound
The calculation formula for learning parameter provides as follows:
If △ LEA(10)> 15dB, then without carrying out background noise modification；If 6dB≤△ LEA(10)≤ 15dB, then according to formula
(10) it is modified.
K1A=-10lg (1-10-0.1△LEA(10))……………………………………………………………(10)
K2A=l0lg (l+4S/A) ... ... ... ... ... ... ... ... ... ... ... ... ... (11)
Work as K2AWhen≤4dB, the measurement done according to this patent method is effective；The wherein absorption of semi-anechoic room and reverberation chamber room
Calculation formula is respectively as follows:
A=α Sν……………………………………………………………………………(12)
A=0.16V/Tn…………………………………………………………………………(13)
LJA ref,atm(10)=LJA(10)+C1+C2……………………………………………………………(18)
In formula:
L′EAi(ST)(10)T--- N at the microphone position of i-th of surface is measured at the top of cylindrical bodyeTThe secondary flushing noise single measured
The average value of event cumulative percent part time integral sound pressure level, unit are decibel (dB)；
NeT--- the pendulous frequency (N that noise emission event is individually rinsed at each microphone position in surface is measured at the top of cylindrical bodyeT
≥5)；
L′EAi,q(ST)(10)T--- q-th of the thing of flushing noise measured at the microphone position of i-th of surface is measured at the top of cylindrical body
Part (q=1,2 ... Ne；Ne>=5) single event cumulative percent time integral sound pressure level, unit are decibel (dB)；
L′EAi(ST)(10)S--- the N at cylindrical body side measurement i-th of surface microphone positioneSThe secondary flushing noise single measured
The average value of event cumulative percent time integral sound pressure level, unit are decibel (dB)；
NeS--- the pendulous frequency (N of noise emission event is individually rinsed at the cylindrical body side measurement each microphone position in surfaceeS
≥5)；
L′EAi,q(ST)(10)S--- q-th of the thing of flushing noise measured at cylindrical body side measurement i-th of surface microphone position
Part (q=1,2 ... Ne；Ne>=5) single event cumulative percent time integral sound pressure level, unit are decibel (dB)；
--- the flushing noise single event cumulative percent time integral measured on surface is measured at the top of cylindrical body
The average value of sound pressure level, unit are decibel (dB)；
NMT--- microphone position number in surface is measured at the top of cylindrical body；
--- the flushing noise single event cumulative percent time integral measured on the measurement surface of cylindrical body side
The average value of sound pressure level, unit are decibel (dB)；
NMS--- cylindrical body side measures surface microphone position number；
--- the flushing noise single event cumulative percent time integral sound measured on cylindrical measurement surface
The average value arbitrarily downgraded, unit are decibel (dB)；
ST--- the area on measurement surface at the top of cylindrical body, unit are square metre (m2)；
SS--- cylindrical body side measures the area on surface, and unit is square metre (m2)；
--- the ambient noise cumulative percent time average sound pressure level measured on surface is measured at the top of cylindrical body
Average value, unit are decibel (dB)；
LpAi(B)(10)T--- the ambient noise cumulative percent measured at the microphone position of i-th of surface is measured at the top of cylindrical body
Time average sound pressure level, unit are decibel (dB)；
--- the ambient noise cumulative percent time average sound pressure level measured on the measurement surface of cylindrical body side
Average value, unit are decibel (dB)；
LpAi(B)(10)S--- in normal flush cycle, the back measured at the microphone position of i-th of surface is measured in cylindrical body side
Scape noise cumulative percent time average sound pressure level, unit are decibel (dB)；
--- the ambient noise cumulative percent time average sound pressure level measured on cylindrical measurement surface is averaged
Value, unit are decibel (dB)；
K1A--- background noise modification value；
K2A--- test Environment Correction Value；
S --- the area on cylindrical measurement surface, unit are square metre (m2)；
A --- in test cabinet at 1kHz frequency room equivalent absorption area, unit be square metre (m2)；
The A weighted average sound absorption coefficient of α --- test cabinet room surface, numberical range is referring to table in GB/T 3767-2016
A.1；
Sν--- the gross area (wall, floor, ceiling) of test cabinet room boundaries, unit are square metre (m2)；
V --- test room volume, unit are cubic meter (m3)；
Tn--- the A weighted measured or frequency band reverberation time, unit are the second (s)；
--- the A weighted single event of each toilet seat sample wash noise measured through cylindrical measurement surface method is tired
Percentage time integral sound pressure level is counted, unit is decibel (dB)；
LJA(10)--- under testing location and corresponding meteorological condition, each toilet seat sample is in normal flush cycle using circle
Cylinder measurement surface method measures the A weighted cumulative percent acoustic energy grade for rinsing noise, and unit is decibel (dB)；
S0=1m2；
C1--- the function of air characteristics impedance under the meteorological condition in testing time and place；
C2--- sound energy under standard meteorological conditions will be converted to relative to the practical acoustic energy under testing time and place meteorological condition
The radiation impedance correction value of amount；
ps--- the atmospheric pressure of testing time and place, unit are kPa (kPa)；
ps,0--- standard atmospheric pressure, 101.325kPa；
The air themperature of θ --- testing time and place, unit are degree Celsius (DEG C)；
θ0=314K；
θ1=296K；
LJA ref,atm(10)--- under atmospheric pressure 101.325kPa, 23.0 DEG C of temperature of standard meteorological conditions, each seat for measuring
The A weighted cumulative percent acoustic energy grade of closet sample wash noise, unit are decibel (dB)；
--- the average value of every group of sample wash noise cumulative percent acoustic energy grade, unit are decibel (dB)；
LJA(10)1、LJA(10)2、LJA(10)3--- the A weighted cumulative percent acoustic energy grade of every group of toilet seat sample wash noise, it is single
Position is decibel (dB)；
--- under atmospheric pressure 101.325kPa, 23.0 DEG C of temperature of standard meteorological conditions, every group of toilet seat sample punching
The average value of noise A weighted cumulative percent acoustic energy grade is washed, unit is decibel (dB)；
LJA ref,atm(10)1、LJA ref,atm(10)2、LJA ref,atm(10)3--- in atmospheric pressure 101.325kPa, 23.0 DEG C of temperature of mark
Under quasi- meteorological condition, the A weighted cumulative percent acoustic energy grade of every group of toilet seat sample wash noise, unit is decibel (dB)；
(2) data revision of the convention requirement: the continuous N measured at the top of cylindrical body and at side measurement i-th of surface microphone positioneIt is a
Toilet seat rinse q-th event in noise emission event (q=1,2 ... Ne；Ne>=5) A weighted single event cumulative percent
Time integral sound pressure level L 'EAi,q-ST)(10)T、L′EAi,q(ST)(10)SAnd its mean value L 'Ei(ST)(10)T、L′Ei(ST)(10)SWith ambient noise
A weighted cumulative percent time average sound pressure level LpAi(B)(10)T、LpAi(B)(10)SRetain one decimal place effective digital；In circle
The continuous N measured on each measurement surface of cylindereThe A weighted single event that a toilet seat rinses noise emission event adds up percentage
The average value of number time integral sound pressure levelAnd its A weighted cumulative percent acoustic energy
Grade LJA(10)With the A weighted cumulative percent time average sound pressure level average value of ambient noiseCalculated result round numbers；
(3) uncertainty of measurement: this patent method provides that console mode ceramic pedestal pan rinses noise A meter on cylindrical measurement surface
Weigh the repeatability standard deviation σ of single event cumulative percent time integral sound pressure level measurement resultomcUpper limit value is not more than
1.5dB.Related content in reference standard GB/T 3767-2016, it is real by same position in a complete normal flush cycle
Personnel are tested using same sound level meter, to same selected by the same part console mode ceramic pedestal pan sample of the same installed position
The average value of A weighted single event cumulative percent time integral sound pressure level on a kind of cylindrical measurement surfaceCarrying out 6 duplicate measurements, (each duplicate measurements, toilet seat sample, which must be reinstalled and be adjusted, to be determined
Position), and background noise modification is carried out to measurement result.Repeatability standard deviation σomcCalculation formula are as follows:
In formula:
--- console mode ceramic pedestal pan rinses noise jth time duplicate measurements and the cylindrical body after background noise modification is surveyed
The average value of A weighted single event cumulative percent time integral sound pressure level on scale face；
--- the Arithmetical average sound pressure grade being calculated by all repeated measuring results.
6. the detection method that console mode ceramic pedestal pan according to claim 1 rinses noise, which is characterized in that described
Evaluation of result carries out in the steps below:
(1) according to national environmental protection specification and products standards requirement, following classification criterion is taken:
Very low to rinse noise, environmental-protecting performance is excellent；
Very low to rinse noise, environmental-protecting performance is good；
Lower to rinse noise, environmental-protecting performance is preferable；
Higher to rinse noise, environmental-protecting performance is poor；
Very high to rinse noise, environmental-protecting performance is inferior.
(2) as some sample wash noise A weighted cumulative percent acoustic energy grade LJA(10)3 sample wash noise A are organized greater than this
Weighted cumulative percent acoustic energy grade LJA(10)Arithmetic mean of instantaneous value10% when, extract again one group of sample repeat it is real
It tests；Calculate the flushing noise cumulative percent that the two groups of toilet seat sample application sound level meters in front and back are measured through cylindrical measurement surface method
Acoustic energy grade LJA(10)Arithmetic mean of instantaneous valueIf some sample wash noise A weighted cumulative percent acoustic energy grade
LJA(10)Greater than this two groups of 6 sample wash noise A weighted cumulative percent acoustic energy grade LJA(10)Arithmetic mean of instantaneous value's
10%, then abandon it；Take remaining toilet seat sample wash noise A weighted cumulative percent acoustic energy grade LJA(10)Arithmetic mean of instantaneous valueAs this group of console mode ceramic pedestal pan sample wash noise rating index.
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