CN2310992Y

CN2310992Y - Multifunctional breath synchronous sampler

Info

Publication number: CN2310992Y
Application number: CN 96232992
Authority: CN
Inventors: 李成刚
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-04-17
Filing date: 1996-04-17
Publication date: 1999-03-17
Anticipated expiration: 2006-04-17

Abstract

The utility model provides a multifunctional breath synchronizing sampling instrument, which is provided with an antigas mask, which is provided with an air suction valve, a sampling head, which is arranged on the outer side of the antigas mask, and is provided with an airflow conducting detector, and an operation displaying device, which is communicated with the airflow conducting detector. Traditional mechanical sampling power is not needed. When respiratory volume is measured, the dust and the poison of the environment is synchronously sampled. Thereby, the sample, which is collected by the instrument, is highly in accordance with the efficiency of the inhaled dust and poison of a human body. The utility model has the advantages of small size, light weight, high sensitivity, high accuracy, multiple functions, convenient operation and saved power consumption, and can be widely used for labor protection, environmental protection, labour hygiene, and the research of medical science, sports science and military science.

Description

Multi-functional breath synchronous sampler

The utility model relates to a kind of sampling instrument, what be particularly related to is a kind of environmental monitoring sampling and individual gasoloid toxic dust monitoring sampling but also measurable respiratory flow of contact of not only can having carried out, the multi-functional breath synchronous sampler of the energetic supersession when measuring human body and working or move.

Existing sampling instrument is divided into two classes: a class is the grab sampling device, mainly samples as the monitoring of work situation toxic dust pollution level; Another kind of is personal sampler, is mainly used in the sampling of individual contact toxic dust dose monitoring.Two kinds of sampling thiefs can only be complementary and can not replace.

50～seventies, the mensuration of China's work situation toxic dust is to adopt the grab sampling device basically.Promptly utilize machine power to bleed (generally the flow per minute is counted liter or tens of liter), again poisonous substance or the dust of gathering with filter membrane or absorbing agent detention desire.The sampling position is fixed on a place, the sampling time short (general several minutes or tens of minutes).This sampling thief can be measured the situation that environment is polluted by toxic dust, and its result can compare with the hygienic standard of national regulation.After the eighties, broad development personal sampler, be mainly used to carry out the dose monitoring sampling of individual contact toxic dust, poison dose-response relationship with research to human body.Personal sampler is divided into two kinds of pump type and pump-free types.It is to utilize small-sized sampling pump to sample for power (general per minute count the up-flow amount) that the pump type is arranged, and principle and grab sampling device are identical, are service time 8 hours, and sampling head places human body front, collar or forehead etc. to locate, and moves and mobile with human body; Pump-free type is to utilize noxious material diffusion or osmosis to sample, and need not use pump, and structure is simpler, but can only adopt toxic gas or steam.There are following three tangible and be difficult to overcome shortcomings in existing sampling thief:

1, the device that all utilize machine power to bleed to sample all is isokinetic sampling (flow that is sampling in the unit interval is constant), and the non-power situation that waits that is specific curves with human body respiration is very different;

2, when the people carries out work in poisonous and harmful operation place, head in fact just is equivalent to a non-isokinetic sampling device, its position is at random, the grab sampling device can't be accomplished this point, though personal sampler can move with human body and sample, compare also different actually with human body mouth and nose breathing situation;

3, the respiratory capacity in the human body unit interval, very big with the relation of labour intensity, the actual effciency of respiratory of power situation such as non-certainly exists difference in its sampled result and the human body respiration.

In sum, existing various sampling thiefs all can not be accomplished to sample synchronously with human body respiration, so its testing result is unsafty.

In a lot of fields such as medical science, physical culture, military training, labour protection, need to measure the energetic supersession of human body.Classic methods is the Douglas-Haldane method, promptly collects experimenter's expiratory air with the Douglas bag, measures its volume then, measures the O of expiratory air again with Haldane gas split pole instrument ₂And CO ₂Content calculates the energetic supersession of human body with this.Loaded down with trivial details inconvenience, extensive mensuration almost can't be carried out.Ministry of Metallurgical Industry developed YA-1 type pulmonary ventilation volume instrument in 1988, it is to utilize vortex flow sensors record inspiratory flow, and sensor is installed on the oronasal mask, overcome the influence of expiratory air water vapor, but since sensor bulk more greatly, longer, and be installed in a side in mouth mask two air-breathing ducts, it is not too convenient to wear.In addition, power consumption is big, and measuring respiratory capacity for a long time has certain difficulty, and this instrument can only be made respiratory capacity and can not use as sampling thief.

In view of above reason, the purpose of this utility model is in order to provide a kind of highly sensitive, convenient, be suitable for can with human body respiration synchronous not only can carry out environmental monitoring sampling and individual gasoloid toxic dust monitoring sampling but also the measurable respiratory flow of contact, the energetic supersession in the time of can measuring human body work or motion, sampling efficiency and the actual consistent as far as possible multi-functional breath synchronous sampler of efficient that sucks toxic dust of human body.

Operation display device is arranged in the utility model, A/D converter is arranged in the operation display device, the amplifier that is connected with A/D converter, the single-chip microcomputer that is connected with amplifier, the display that is connected with single-chip microcomputer, memory, guidance panel is characterized in that the anti-poison respirator that contains inlet valve is arranged in the sampling instrument, be contained in the sampling head that contains gas conductance detecting device in the anti-poison respirator outside, A/D converter is connected (referring to Fig. 1, Fig. 3, Fig. 4) by the input socket with the gas conduction detecting device.

In the above-mentioned gas conduction detecting device fair water fin that contains the positive and negative pressure pod apertures is arranged, be loaded on the gas transducer (referring to Fig. 1, Fig. 2) on the fair water fin.

The box body that places the preceding filtrate adorned of gas conduction detecting device is arranged in the above-mentioned sampling head, the lid that cooperates with box body (referring to Fig. 1), filtrate can adopt filter membrane, activated charcoal, polyfoam, silica gel, decide on gasoloid of different nature, the gas conduction detecting device is positioned at the suction end of sampling mouth mask, between sampling head and inlet valve, thus the metering be inspiratory flow, can avoid the influence of expiratory air water vapor.

The sampling folder (referring to Fig. 1) that filter membrane is fixing is arranged in the box body of above-mentioned sampling head.

During work, this synchronized sampling instrument becomes digital signal to send into the single-chip microcomputer processing through the amplifier amplification analog signal conversion through A/D converter the gas flow that the gas conduction detecting device captures, the memory storage through the selection of functional switch, can demonstrate various data again on display.

The utility model does not need traditional mechanical sampling power, when measuring respiratory capacity, toxic dust in the environment is sampled synchronously, thereby sampling efficiency meets the efficient of the actual suction of human body toxic dust most.Sensitivity, degree of accuracy height, function is many, and is in light weight, and volume is little, carries easy to operate.The power consumptive province is suitable for.As sampling thief, can be applicable to the monitoring sampling of labour hygiene, labour protection, environmental protection, and health, work, environmental administration's researching human body suck the toxic dust dose-response relationship; As breathing gauge; can measure energetic supersession; be applied to physiological Study, many fields such as preclinical medicine, clinical medicine, sports medical science, military training, labour protection, environmental health, industrial hygiene are suitable for the mensuration at physical culture, military training and workman's productive labor scene especially.Table 1, table 2 are respectively the comparison of the utility model as sampling instrument or lung gauge and prior art.

Table 1: as sampling instrument

	General sampling thief	The present invention
	General sampling thief	The present invention	Function and usage mobility air suction mode and suction exhale synchronous rate of air sucked in required to change and the actual effciency of respiratory volume weight of human body security power consumption reading with labour intensity	Independent environmental monitoring or the individual dose monitoring grab sampling of only sampling can't move and wait power, the mechanical pump sampling can not with breathe synchronously can not difference big general big heavier how dangerous big need conversion standard state	Sampling, surveying the respiratory capacity environment overflows and surveys the monitoring of U.S individual dose and carry out simultaneously and can move and move the non-power that waits with human body, and with will to inhale curve consistent, the sampling of human body respiration function with breathe that can to change difference synchronously little very little gently safer thereupon, anti-dry minimum direct-reading

Table 2 conduct: lung gauge

	General lung gauge	The present invention
	General lung gauge	The present invention	Volume weight dead space sensing head shows partly purposes function electricity consumption	Little light big to the single few power consumption of little big reading conversion	The many power savings of littler lighter minimum direct-reading multipurpose (can make sampler)

Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing:

Fig. 1 is the utility model structural representation.

Fig. 2 is a negative-pressure guide pore size distribution synoptic diagram.

Fig. 3 is the operation display device circuit block diagram.

Fig. 4 is the operation display device outside drawing.

Referring to Fig. 1～Fig. 4, sampling anti-poison respirator 1 is the soft rubber mouth mask that adopts, it meets GB2890-82 filtermask request of national standard, the metal surface cover, characteristics be light, volume is little, the visual field is wide, gentle more comfortable, wear conveniently, can not influence execute-in-place especially and use, impermeability is good, does not influence the accuracy of breathing metering.Sampling head 3 can be contained in the outside of sampling anti-poison respirator inlet valve 2, and the fair water fin 5 in the gas conduction detecting device 4 is loaded in the sampling head, and malleation pod apertures 6 is arranged on the fair water fin, negative-pressure guide hole 7, and transducer 8 dresses are thereon.In order accurately to detect respiratory flow, the volume of transducer, weight, sensitivity, linear error, stability, reliability all require very high.Can adorn the box body 9 of filtrate in the sampling head in addition, sampling folder 10 is loaded on the lid 11 on the sampling head, at

box body

9 and 10 on sampling folder filter membrane 12 is arranged.The two ends of soft mini cable line 13 are connected on transducer 8 and the operation display device 14.The A/D converter 15 that is connected with transducer by outlet 21 is arranged, the operational amplifier 16 that is connected with A/D converter 15, the single-chip microcomputer 17 that is connected with operational amplifier 16, memory 18 in the operation display device 14.The display 19 that is connected with single-chip microcomputer.Single-chip microcomputer adopts the 80C31 type, and display is 8 bit digital displays, shows that volume is from 1ml to 9.9999m ³Working station indicator 20 is arranged: when when air-breathing, pilot lamp is bright but do not show its concrete numerical value on the display, and purpose is in economize on electricity.10 operating keys are arranged: work initiating key (Start), work stop key (Stop) on the guidance panel 22, respiratory capacity display key (ML), time keeping key (Time), shift key (Change), the temperature key (℃), air pressure key (℃ kpa) re-enters key (RESET), and temperature, pressure increases key (↑), and temperature, pressure reduces key (↓).During mensuration, as long as the input of the temperature of there and then and atmospheric pressure, display result has promptly converted the gas volume under the standard state to, and Time is for showing detection time, ↑ and ↓ key uses during for the concrete data of input.The all functions key is and touches membrane switch on the panel, and arrangement, tone etc. have all been considered easy to use and attractive in appearance.The battery that uses in the present embodiment is the 9V laminated cell, and every battery can use 48 hours continuously, and power consumption is economic, when power consumption is most in addition warning device is arranged, and can in time remind the user.Present embodiment shows and operation part is a rectangle, and volume is 10cm * 4cm * 13cm, can be worn on the waistband and measure.Whole instrument

About 250 grams of weight.

Sequence number 23 is a power supply among Fig. 3.

Claims

1, multi-functional breath synchronous sampler, comprise operation display device, A/D converter is arranged in the operation display device, the amplifier that is connected with A/D converter, the single-chip microcomputer that is connected with amplifier, the display that is connected with single-chip microcomputer, memory, guidance panel, it is characterized in that the anti-poison respirator that contains inlet valve is arranged in the described sampling instrument, be contained in the sampling head that contains gas conductance detecting device in the anti-poison respirator outside, A/D converter is connected with the gas conduction detecting device by the input socket.

2, multi-functional breath synchronous sampler as claimed in claim 1 is characterized in that in the described gas conduction detecting device fair water fin that contains the positive and negative pressure pod apertures being arranged, and is loaded on the gas transducer on the fair water fin.

3, multi-functional breath synchronous sampler as claimed in claim 1 is characterized in that having in the described sampling head box body that places the preceding filtrate adorned of gas conduction detecting device, the lid that cooperates with box body.

4, multi-functional breath synchronous sampler as claimed in claim 3 is characterized in that the sampling folder that filter membrane is fixing is arranged in the box body of described sampling head.