CN106053330B - Soil density and moisture combined measurement method and device - Google Patents
Soil density and moisture combined measurement method and device Download PDFInfo
- Publication number
- CN106053330B CN106053330B CN201610345195.2A CN201610345195A CN106053330B CN 106053330 B CN106053330 B CN 106053330B CN 201610345195 A CN201610345195 A CN 201610345195A CN 106053330 B CN106053330 B CN 106053330B
- Authority
- CN
- China
- Prior art keywords
- soil
- measured
- acceleration
- probe
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
Landscapes
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to a kind of soil density and moisture combined measurement methods and device, wherein this method comprises: obtaining probe in the acceleration and pressure being inserted into soil course to be measured；Denoising is carried out to acceleration and pressure；To Jing Guo denoising acceleration and pressure analyze, to determine the degree of packing measurement result of soil；Based on the volumetric soil water content model under the standard degree of packing, according to degree of packing measurement result, volumetric water content soil moisture to be measured being scaled in the case of the standard soil degree of packing.The present invention has more universality for the measurement of soil density, the measurement error that can be avoided non-be at the uniform velocity inserted into due to probe and generate, measurement Soil compaction that can be more accurate, the error that can be measured to avoid the volumetric soil water content as caused by Soil compaction difference, and then more accurate measurement volumetric soil water content, and then lay the foundation for agricultural production, stand tending and the research of ECOLOGICAL ENVIRONMENTAL MONITORING.
Description
Technical field
The present invention relates to Forest soil detection field more particularly to a kind of soil density and moisture combined measurement method and
Device.
Background technique
Soil because with fertility, green plants can be grown due to become the basis of agriculture and forestry production, the degree of packing in soil
And moisture content directly affects the growth and development of plant.Soil density is the important parameter in soil texture, by soil shearing resistance,
Compressing force and frictional force etc. collectively form.The natural causes such as flood, arid and heavy-duty machinery and other tillage control measures etc. are artificial
Factor can all make soil density change, so that the situation of liquid manure gas heat in the soil environment that plant depends on for existence is influenced,
And then it will affect the growth and the yield of crops of plant.The size of soil density can influence the growth of crop root, can be with
For evaluating soil tilth.Excessively the soil of consolidation can prevent infiltrating for moisture, influence plant root growth, reduce the benefit of chemical fertilizer
With rate, so as to cause crop failure.Soil moisture content all uses great influence, soil to the growth and development of plant and soil density
Water content is excessive or very few can all generate to the normal growth of plant is coerced.
However, fallen leaves are accumulated and rotted throughout the year inside forest, the complicated multiplicity of the ecosystem in forest, causes forest zone native in addition
Earth complicated composition.The prior art during measuring the Forest soil degree of packing, measure probe when being inserted into soil often due to
Non- at the uniform velocity insertion causes the result of measurement large error occur.The American Society of Agricultural Engineers ASAE regulation degree of packing is visited when measuring
The speed of needle insertion is 0.03m/s, and the pressure measured at this time can be used for characterizing soil density.
Since probe insertion is a quick process, hand-held soil density instrument is difficult accurately to guarantee in actual use
This speed, thus the downward power that is subject to of measured probe some for generating acceleration, so based on the method
Measurement can generate biggish error.Further, soil compaction is not all accounted for for the measurement of volumetric soil water content before
The influence of degree, however the consolidation degree of the volumetric water content of actually soil and soil has substantial connection, the degree of packing of soil increases
The soil density that will lead to greatly in unit volume increases, and then causes the variation of unit soil internal water, therefore, does not consider soil
The degree of packing and the volumetric water content for directly measuring soil actually exists large error.
Summary of the invention
Accurately guarantee the speed of probe insertion due to being difficult in actual use for existing soil density instrument, thus leads
Cause the influence for ignoring soil density in the defect and existing soil moisture content measurement process that generate biggish measurement error and
Lead to the defect of volumetric soil water content measurement error, the following technical solutions are proposed by the present invention:
A kind of soil density and moisture combined measurement method, comprising:
Probe is obtained in the acceleration being inserted into soil course to be measured and the pressure being subject to；
Denoising is carried out to the acceleration and the pressure；
Based on Newton's second law and balance between two forces method, to Jing Guo denoising the acceleration and the pressure carry out
Analysis, to determine the degree of packing measurement result of the soil to be measured according to the result of the analysis；
Obtain the moisture that the probe is inserted into the soil to be measured；
It, will be described to be measured according to the degree of packing measurement result based on the volumetric soil water content model under the standard degree of packing
The moisture of soil is scaled volumetric water content nominally.
Optionally, the probe that obtains is in the acceleration being inserted into soil course to be measured and the pressure being subject to, comprising:
During the probe is inserted into the soil to be measured, carrying out predeterminated frequency to the acceleration of the probe
Every measurement, to obtain the acceleration discrete values for reflecting the probe acceleration variation；
The interval measurement of predeterminated frequency is carried out to the pressure that the probe is subject to, and reflects the probe pressure variation to obtain
Pressure discrete values.
It is optionally, described that denoising is carried out to the acceleration and the pressure, comprising:
Denoising is carried out to the acceleration and the pressure using clipping average filter method, it is inclined to eliminate sampled value
Difference.
Optionally, it is described be based on Newton's second law and balance between two forces method, to Jing Guo denoising the acceleration with
The pressure is analyzed, to determine the degree of packing measurement result of the soil to be measured according to the result of the analysis, comprising:
Based on Newton's second law, measure according to the numerical value of the acceleration Jing Guo denoising and in advance described in
The quality of probe determines the numerical value for generating the power of the acceleration；
Based on balance between two forces method, according to the numerical value of the pressure Jing Guo denoising and it is described for generate it is described plus
The non-at the uniform velocity process that the probe is inserted into the soil to be measured is equivalent at the uniform velocity process, by discrete by the numerical value of the power of speed
Integral algorithm determines effective consolidation power of the soil to be measured, using effective consolidation power as the consolidation of the soil to be measured
Spend measurement result.
Optionally, the moisture for obtaining the probe and being inserted into soil to be measured, comprising:
Bimetallic ring electrode is surveyed using the signal source of 100M and the coaxial transmission line of blocked impedance based on standing-wave ratio method
The voltage signal that amount obtains is handled, and the analog voltage signal of the corresponding moisture content of the soil to be measured is obtained, will be described
Moisture measurement result of the analog voltage signal as the soil to be measured.
Optionally, the volumetric soil water content model under the degree of packing based on standard measured is obtained in conjunction with above-mentioned
The soil moisture is scaled volumetric water content nominally by soil density, comprising:
Processing analysis is carried out to the moisture measurement result of the soil to be measured, obtains the volume of aqueous of the soil to be measured
Rate；
The degree of packing measurement result and the moisture measurement result are substituted into the pass of soil density and volumetric water content
It is model, to obtain the volumetric soil water content under the standard soil degree of packing.
A kind of soil density and moisture duplex measurement device, comprising:
Acceleration and pressure acquiring unit, for obtaining probe in the acceleration that is inserted into soil course to be measured and being subject to
Pressure；
Unit is denoised, for carrying out denoising to the acceleration and the pressure；
Degree of packing measuring unit, for being based on Newton's second law and balance between two forces method, to by described in denoising
Acceleration and the pressure are analyzed, to determine the degree of packing measurement knot of the soil to be measured according to the result of the analysis
Fruit；
Moisture acquiring unit, the moisture for being inserted into the soil to be measured for obtaining the probe；
Volumetric water content measuring unit, for based on the volumetric soil water content model under the standard degree of packing, according to described
The moisture of the soil to be measured is scaled volumetric water content nominally by degree of packing measurement result.
Optionally, the acceleration and pressure acquiring unit, are further used for:
During the probe is inserted into the soil to be measured, carrying out predeterminated frequency to the acceleration of the probe
Every measurement, to obtain the acceleration discrete values for reflecting the probe acceleration variation；And
During the probe is inserted into the soil to be measured, predeterminated frequency is carried out to the pressure that the probe is subject to
Interval measurement, to obtain the pressure discrete values for reflecting the probe pressure variation.
Optionally, the denoising unit, is further used for:
Denoising is carried out to the acceleration and the pressure using clipping average filter method, it is inclined to eliminate sampled value
Difference.
Optionally, the degree of packing measuring unit, is further used for:
Based on Newton's second law, measure according to the numerical value of the acceleration Jing Guo denoising and in advance described in
The quality of probe determines the numerical value for generating the power of the acceleration；
Based on balance between two forces method, according to the numerical value of the pressure Jing Guo denoising and it is described for generate it is described plus
The non-at the uniform velocity process that the probe is inserted into the soil to be measured is equivalent at the uniform velocity process, by discrete by the numerical value of the power of speed
Integral algorithm determines effective consolidation power of the soil to be measured, using effective consolidation power as the consolidation of the soil to be measured
Spend measurement result.
Optionally, the moisture acquiring unit, is further used for:
Bimetallic ring electrode is surveyed using the signal source of 100M and the coaxial transmission line of blocked impedance based on standing-wave ratio method
The voltage signal that amount obtains is handled, and the analog voltage signal of the corresponding moisture content of the soil to be measured is obtained, will be described
Moisture measurement result of the analog voltage signal as the soil to be measured.
Optionally, the volumetric water content measuring unit, is further used for:
Processing analysis is carried out to the moisture measurement result of the soil to be measured, obtains the volume of aqueous of the soil to be measured
Rate；And
The degree of packing measurement result and the moisture measurement result are substituted into the pass of soil density and volumetric water content
It is model, to obtain the volumetric soil water content under the standard soil degree of packing.
Soil density and moisture combined measurement method and device provided by the invention, soil compared to the prior art are tight
Solidity and moisture combined measurement method have more universality for the measurement of soil density, can be avoided non-even due to probe
Speed insertion and the measurement error generated, measurement Soil compaction that can be more accurate are contained by soil density and volume
Water rate model can convert to obtain the volumetric soil water content under the standard degree of packing, can be to avoid due to Soil compaction difference
Caused by the error that measures of volumetric soil water content, and then more accurate measurement volumetric soil water content, and then raw for agricultural
It produces, stand tending and the research of ECOLOGICAL ENVIRONMENTAL MONITORING lay the foundation.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the soil density of one embodiment of the invention and the flow diagram of moisture combined measurement method；
Fig. 2 is the stream that denoising is carried out in the soil density and moisture combined measurement method of one embodiment of the invention
Journey schematic diagram；
Fig. 3 be one embodiment of the invention soil density and moisture combined measurement method in equivalent at the uniform velocity handle
Flow diagram；
Fig. 4 is the soil density of one embodiment of the invention and the structural schematic diagram of moisture duplex measurement device；
Fig. 5 is the soil density of one embodiment of the invention and the structural schematic diagram of moisture duplex measurement system.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical solution in the embodiment of the present invention is explicitly described, it is clear that described embodiment is the present invention
A part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
Fig. 1 is the soil density of one embodiment of the invention and the flow diagram of moisture combined measurement method；Such as Fig. 1
It is shown, this method comprises:
S1: probe is obtained in the acceleration being inserted into soil course to be measured and the pressure being subject to；
S2: denoising is carried out to the acceleration and the pressure；
S3: be based on Newton's second law and balance between two forces method, to Jing Guo denoising the acceleration and the pressure
It is analyzed, to determine the degree of packing measurement result of the soil to be measured according to the result of the analysis；
S4: the moisture that the probe is inserted into the soil to be measured is obtained；
S5:, will be described according to the degree of packing measurement result based on the volumetric soil water content model under the standard degree of packing
The moisture of soil to be measured is scaled volumetric water content nominally.
The soil density and moisture combined measurement method of the present embodiment, soil density and water compared to the prior art
Point combined measurement method, has more universality for the measurement of soil density, can be avoided non-be at the uniform velocity inserted into due to probe and
The measurement error of generation, measurement Soil compaction that can be more accurate pass through soil density and volumetric water content model
It can convert to obtain the volumetric soil water content under the standard degree of packing, it can be to avoid the soil as caused by Soil compaction difference
The error of earth volumetric water content measurement, and then more accurate measurement volumetric soil water content, and then comforted for agricultural production, forest
It educates and the research of ECOLOGICAL ENVIRONMENTAL MONITORING lays the foundation.
Obtained as the preferred of the present embodiment, in step S1 probe the acceleration being inserted into soil course to be measured and by
Pressure, can further comprise:
S11: during the probe is inserted into the soil to be measured, predeterminated frequency is carried out to the acceleration of the probe
Interval measurement, to obtain the acceleration discrete values for reflecting probe acceleration variation；
S12: carrying out the interval measurement of predeterminated frequency to the pressure that the probe is subject to, and reflects the probe pressure to obtain
The pressure discrete values of variation.
As the preferred of the present embodiment, denoising is carried out to the acceleration and the pressure in step S2, it can be into one
Step includes:
Denoising is carried out to the acceleration and the pressure using clipping average filter method, it is inclined to eliminate sampled value
Difference.
Specifically, Fig. 2 shows carry out in the soil density of one embodiment of the invention and moisture combined measurement method
The process of denoising.As shown in Fig. 2, continuous N number of sampled value is regarded as a queue length using clipping average filter method
It is fixed as N, a new data is sampled every time and is put into tail of the queue, determines the maximum deflection difference value (being set as A) that double sampling allows, if
The difference of this sub-value and upper sub-value is less than or equal to A, then this sub-value is effective, if the difference of this sub-value and upper sub-value is greater than A, this sub-value
In vain, this sub-value is abandoned, this sub-value is replaced with sub-value, and throw away a sampled data of head of the queue, N number of data in queue
Arithmetic mean operation is carried out, obtaining new filter result N is worth choosing, using clipping average filter method for the arteries and veins that accidentally occurs
The interference of punching property, can eliminate the sampled value deviation due to caused by impulse disturbances.
There is following several method about discrete signal denoising:
Average value filtering is typical linear filter method, is conceived to this sampling period.In a sampling period,
M sampling is done to signal, and arithmetic average is taken to it, as the filter output in this sampling period.Average value filtering pair
Periodic jamming signals have good inhibiting effect, but can generate certain delay, the number m that the delay and filtering need to sample
It is directly proportional.M value depends on the requirement to smoothness and sensitivity.M increases, and smoothness increases, and sensitivity is lowered.
Median filtering is typical non-linear filtering method, to filter out accidental impulse disturbances, frequently with median filtering.In
The continuous m sampled value of signal is ranked up by value filtering, takes in-between value as the filtering output in this sampling period.M is got over
Big filter effect is better, but postpones to increase.Median filtering has good filter effect to the impulse disturbances of gradual process.
Vienna filters a kind of adaptive filter, and basic thought is so that under certain constraints, signal exports
With the difference of a desired output square minimum optiaml ciriterion.Wiener filtering adaptive surface is wider, and no matter stationary random process is
It is continuous or discrete, it is scalar or vector, can all applies.But it cannot be used for the random mistake that noise is non-stationary
It is the case where journey, also inconvenient for vector situation application.Therefore, Wiener filtering is in practical problem using few.
Wavelet Denoising Method has a good localization property in time domain and frequency domain simultaneously, the wavelet coefficient of signal with scale increasing
Increase greatly, the wavelet conversion coefficient of noise reduces with the increase of scale.Therefore, a threshold value can be set, the threshold value is utilized
Adjusting thresholds are carried out to wavelet coefficient according to certain rules.Wavelet coefficients at different levels after adjusting thresholds are reconstructed, are obtained
Signal after de-noising.Due to the propagation characteristic of signal and noise during the randomness and wavelet decomposition of noise signal strength
Difference, threshold value used by each layer of coefficient of wavelet decomposition should be the variation with wavelet coefficient and change.Therefore, threshold value
Selection is the key that denoising effect quality.
Since the methods of above-mentioned several existing sampling denoisings all exist, speed is slow, being affected etc. by threshold value selection lacks
Therefore point uses clipping average filter method in conjunction with the characteristic of soil density and moisture duplex measurement.
Fig. 3 be one embodiment of the invention soil density and moisture combined measurement method in equivalent at the uniform velocity handle
Flow diagram；As shown in figure 3, as the preferred of above-described embodiment, it is flat based on Newton's second law and two power in step S3
Weighing apparatus method, to Jing Guo denoising the acceleration and the pressure analyze, to determine institute according to the result of the analysis
The degree of packing measurement result for stating soil to be measured can further comprise:
S31: being based on Newton's second law, measures according to the numerical value of the acceleration Jing Guo denoising and in advance
The quality of the probe determines the numerical value for generating the power of the acceleration；
S32: be based on balance between two forces method, according to the numerical value of the pressure Jing Guo denoising and it is described be used for generate institute
The non-at the uniform velocity process that the probe is inserted into the soil to be measured is equivalent at the uniform velocity process, passed through by the numerical value for stating the power of acceleration
Discrete integration algorithm determines effective consolidation power of the soil to be measured, using effective consolidation power as the soil to be measured
Degree of packing measurement result.
Specifically, it is based on balance between two forces method, the downward power F that probe applies during insertion, which is greater than soil, applies probe
The reaction force Fn added, and then the acceleration a, downward power F generated includes the pressure F1 and probe that people is applied on probe
Gravity G, and power Fn then reflects the degree of packing of soil, the resultant force F of power F1 and G known to balance between two forces method, a part is for supporting
Disappear reaction force Fn, and another part is m for generating acceleration a, the quality of probe, then the power for generating acceleration is Fa=m*a,
Then Fn=F1-Fa+G；Known by balance between two forces method, if probe does linear uniform motion and enters soil, probe during insertion by
To downward power Fx, then the reaction force N=G+Fx that soil applies probe, because the soil density of same point is constant, institute
With N=Fn, then there is Fx=F1-Fa, therefore can be calculated by measuring the pressure F being applied on probe and acceleration a
Power Fx, and then the process for inserting a probe into soil is equivalent at the uniform velocity process.Because when probe is at the uniform velocity inserted into soil due to soil
Consolidation difference is N, N=Fn to reaction force of different sizes caused by probe, it is possible to is calculated by F1 and a
Fx, and then N (i.e. Fn) is obtained, the size of Fn has reacted the consolidation degree of soil, by handling to obtain soil to Fn discrete integration
Effective consolidation power Fs, realizes the measurement and quantization to soil density.
The soil density measurement method of the present embodiment, the non-at the uniform velocity process by inserting a probe into soil are equivalent at the uniform velocity
Process, and then realize measurement to soil density, method compared to the prior art, for soil density measurement it is pervasive
Property it is higher, it is possible to prevente effectively from being missed since Forest soil constitutes measurement that is complicated and leading to non-be at the uniform velocity inserted into of probe and generate
Difference, the accuracy for measuring Soil compaction are higher.It can be converted and be marked with volumetric water content model by soil density
Volumetric soil water content under the quasi- degree of packing can be surveyed to avoid the volumetric soil water content as caused by Soil compaction is different
The error of amount, and then more accurate measurement volumetric soil water content.
Fig. 4 is the soil density of one embodiment of the invention and the structural schematic diagram of moisture duplex measurement device；Such as Fig. 4
Shown, which includes that acceleration and pressure acquiring unit 10, denoising unit 20, degree of packing measuring unit 30, moisture obtain list
Member 40 and volumetric water content measuring unit 50；
Wherein, acceleration and pressure acquiring unit 10 be used to obtain probe in the acceleration being inserted into soil course to be measured and
The pressure being subject to；
Unit 20 is denoised to be used to carry out denoising to the acceleration and the pressure；
Degree of packing measuring unit 30 is used to be based on Newton's second law and balance between two forces method, to by described in denoising
Acceleration and the pressure are analyzed, to determine the degree of packing measurement knot of the soil to be measured according to the result of the analysis
Fruit；
Moisture acquiring unit 40, the moisture for being inserted into the soil to be measured for obtaining the probe；
Volumetric water content measuring unit 50, for based on the volumetric soil water content model under the standard degree of packing, according to institute
It states degree of packing measurement result and the moisture of the soil to be measured is scaled volumetric water content nominally.
Soil density described in the present embodiment and moisture duplex measurement device can be used for executing above method embodiment,
Its principle is similar with technical effect, and details are not described herein again.
As the preferred of the present embodiment, acceleration and pressure acquiring unit 10 can also be further used for:
During the probe is inserted into the soil to be measured, carrying out predeterminated frequency to the acceleration of the probe
Every measurement, to obtain the acceleration discrete values for reflecting the probe acceleration variation；And
During the probe is inserted into the soil to be measured, predeterminated frequency is carried out to the pressure that the probe is subject to
Interval measurement, to obtain the pressure discrete values for reflecting the probe pressure variation.
As the preferred of the present embodiment, denoising unit 20 can also be further used for:
Denoising is carried out to the acceleration and the pressure using clipping average filter method, it is inclined to eliminate sampled value
Difference.
As the preferred of the present embodiment, degree of packing measuring unit 30 can also be further used for:
Based on Newton's second law, measure according to the numerical value of the acceleration Jing Guo denoising and in advance described in
The quality of probe determines the numerical value for generating the power of the acceleration；
Based on balance between two forces method, according to the numerical value of the pressure Jing Guo denoising and it is described for generate it is described plus
The non-at the uniform velocity process that the probe is inserted into the soil to be measured is equivalent at the uniform velocity process, by discrete by the numerical value of the power of speed
Integral algorithm determines effective consolidation power of the soil to be measured, using effective consolidation power as the consolidation of the soil to be measured
Spend measurement result.
As the preferred of the present embodiment, moisture acquiring unit 40 can be further used for:
Bimetallic ring electrode is surveyed using the signal source of 100M and the coaxial transmission line of blocked impedance based on standing-wave ratio method
The voltage signal that amount obtains is handled, and the analog voltage signal of the corresponding moisture content of the soil to be measured is obtained, will be described
Moisture measurement result of the analog voltage signal as the soil to be measured.
As the preferred of the present embodiment, volumetric water content measuring unit 50 can also be further used for:
Processing analysis is carried out to the moisture measurement result of the soil to be measured, obtains the volume of aqueous of the soil to be measured
Rate；And
The degree of packing measurement result and the moisture measurement result are substituted into the pass of soil density and volumetric water content
It is model, to obtain the volumetric soil water content under the standard soil degree of packing.
Soil density described in the present embodiment and moisture duplex measurement device can be used for executing above method embodiment,
Its principle is similar with technical effect, and details are not described herein again.
It should be noted that for device embodiment, since it is basically similar to the method embodiment, so description
Fairly simple, the relevent part can refer to the partial explaination of embodiments of method.
The present invention is illustrated with a specific embodiment below, but the scope of protection of the present invention is not limited.
Fig. 5 is the soil density of one embodiment of the invention and the structural schematic diagram of moisture duplex measurement system.Such as Fig. 5
Shown, which includes:
Degree of packing detection unit 100, for measuring probe in insertion soil using acceleration module 110 and modular pressure 120
Acceleration signal and pressure signal when earth, to realize the detection of the degree of packing using acceleration and pressure；
Temperature detecting unit 200, for measuring the temperature of soil；
Water content detection unit 300 is measured for the volumetric water content to soil；
GPS positioning unit 400, for positioning the location information and altitude information of measured obtained soil density；
LCD MODULE 500, the forest zone three-dimensional model for being drawn to combination temperature, moisture, position and the degree of packing
Figure carries out graphical display, and shows to the relational model between the degree of packing and temperature, moisture and position, for system
Operational order is shown；
Serial ports download unit 600, for carrying out communication and the transmission of corresponding data with host computer；
Volumetric water content measuring unit 700, for combining soil density and Soil moisture, by soil density and
The volumetric soil water content under the standard soil degree of packing is calculated in volumetric soil water content model；
Master control processing unit 800 for carrying out processing calculating to the data of acquisition, and controls the communication of data and shows
Show.
Further, which can also include denoising unit 810, computing unit 820 and data mould
830 (not shown) of type unit；
Wherein, denoising unit 810 is used to carry out denoising to measured acceleration signal and pressure signal, and removal is made an uproar
The interference of sound point.
Computing unit 820 is used for based on the signal after denoising, comprehensive to accelerate using Newton's second law and balance between two forces method
Degree and pressure insert a probe into process and are equivalent at the uniform velocity process, carry out discrete integration and the effective consolidation power of soil is calculated, realize
Measurement to soil compaction.
Data model unit 830 establishes three-dimensional model for combination temperature, moisture, position and the degree of packing, and establishes consolidation
Degree and the relation curve model between temperature, moisture and position.
A kind of equivalent at the uniform velocity measurement method of Forest soil degree of packing provided in an embodiment of the present invention and measuring system, it is main logical
It crosses and inserts a probe into the non-at the uniform velocity process of soil and be equivalent at the uniform velocity process, and then realize the measurement to soil density, be followed successively by
Acceleration and pressure measurement are carried out, temperature measurement is carried out, carries out moisture measurement, GPS position measurement, carry out denoising, be based on
Equivalent at the uniform velocity processing, the discrete integration of Newton's second law and balance between two forces method ask effective consolidation power, nominally soil mass
Product moisture content calculates, and the foundation of three-dimensional model and relation curve is shown, thus method compared to the prior art, for soil compaction
The measurement of degree has universality, it is possible to prevente effectively from leading to non-be at the uniform velocity inserted into of probe since Forest soil constitutes complicated and producing
Raw measurement error, measurement Soil compaction that can be more accurate；It can by soil density and volumetric water content model
The volumetric soil water content under the standard degree of packing is obtained with conversion, it can be to avoid the soil as caused by Soil compaction difference
The error of volumetric water content measurement, and then more accurate measurement volumetric soil water content, and then be agricultural production, stand tending
And the research of ECOLOGICAL ENVIRONMENTAL MONITORING lays the foundation.
The above examples are only used to illustrate the technical scheme of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these are modified or replace
It changes, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of soil density and moisture combined measurement method characterized by comprising
Probe is obtained in the acceleration being inserted into soil course to be measured and the pressure being subject to；
Denoising is carried out to the acceleration and the pressure；
Based on Newton's second law and balance between two forces method, to Jing Guo denoising the acceleration and the pressure divide
Analysis, to determine the degree of packing measurement result of the soil to be measured according to the result of the analysis；
The probe is inserted into and obtains the moisture of the soil to be measured；
Based on the volumetric soil water content model under the standard degree of packing, according to the degree of packing measurement result by the soil to be measured
Moisture be scaled volumetric water content nominally；
It is described be based on Newton's second law and balance between two forces method, to Jing Guo denoising the acceleration and the pressure progress
Analysis, to determine the degree of packing measurement result of the soil to be measured according to the result of the analysis, comprising:
Based on Newton's second law, the probe that measures according to the numerical value of the acceleration Jing Guo denoising and in advance
Quality determine the numerical value for generating the power of the acceleration；
Based on balance between two forces method, according to the numerical value of the pressure Jing Guo denoising and described for generating the acceleration
Power numerical value, the non-at the uniform velocity process that the probe is inserted into the soil to be measured is equivalent at the uniform velocity process, passes through discrete integration
Algorithm determines effective consolidation power of the soil to be measured, surveys effective consolidation power as the degree of packing of the soil to be measured
Measure result.
2. the method according to claim 1, wherein the probe that obtains is being inserted into adding in soil course to be measured
Speed and the pressure being subject to, comprising:
During the probe is inserted into the soil to be measured, the interval for carrying out predeterminated frequency to the acceleration of the probe is surveyed
Amount, to obtain the acceleration discrete values for reflecting the probe acceleration variation；
The interval measurement of predeterminated frequency is carried out, to the pressure that the probe is subject to obtain the pressure for reflecting the probe pressure variation
Power discrete values.
3. the method according to claim 1, wherein described carry out at denoising the acceleration and the pressure
Reason, comprising:
Denoising is carried out to the acceleration and the pressure using clipping average filter method, to eliminate sampled value deviation.
4. method according to claim 1, which is characterized in that the moisture for obtaining the probe and being inserted into soil to be measured, packet
It includes:
Bimetallic ring electrode measurement is obtained using the signal source of 100M and the coaxial transmission line of blocked impedance based on standing-wave ratio method
The voltage signal taken is handled, and the analog voltage signal of the corresponding moisture content of the soil to be measured is obtained, by the simulation
Moisture measurement result of the voltage signal as the soil to be measured.
5. method according to claim 4, which is characterized in that the volumetric soil water content mould under the degree of packing based on standard
The moisture of the soil to be measured is scaled volumetric water content nominally according to the degree of packing measurement result by type, packet
It includes:
Processing analysis is carried out to the moisture measurement result of the soil to be measured, obtains the volumetric water content of the soil to be measured；
The degree of packing measurement result and the moisture measurement result are substituted into the relationship mould of soil density and volumetric water content
Type, to obtain the volumetric soil water content under the standard soil degree of packing.
6. a kind of soil density and moisture duplex measurement device characterized by comprising
Acceleration and pressure acquiring unit, for obtaining probe in the acceleration being inserted into soil course to be measured and the pressure being subject to
Power；
Unit is denoised, for carrying out denoising to the acceleration and the pressure；
Degree of packing measuring unit, for being based on Newton's second law and balance between two forces method, to the acceleration Jing Guo denoising
Degree and the pressure are analyzed, to determine the degree of packing measurement result of the soil to be measured according to the result of the analysis；
Moisture acquiring unit after being inserted into the soil to be measured for the probe, obtains the moisture of the soil to be measured；
Volumetric water content measuring unit, for based on the volumetric soil water content model under the standard degree of packing, according to the consolidation
It spends measurement result and the moisture of the soil to be measured is scaled volumetric water content nominally；
The degree of packing measuring unit, is further used for:
Based on Newton's second law, the probe that measures according to the numerical value of the acceleration Jing Guo denoising and in advance
Quality determine the numerical value for generating the power of the acceleration；
Based on balance between two forces method, according to the numerical value of the pressure Jing Guo denoising and described for generating the acceleration
Power numerical value, the non-at the uniform velocity process that the probe is inserted into the soil to be measured is equivalent at the uniform velocity process, passes through discrete integration
Algorithm determines effective consolidation power of the soil to be measured, surveys effective consolidation power as the degree of packing of the soil to be measured
Measure result.
7. device according to claim 6, which is characterized in that the acceleration and pressure acquiring unit are further used for:
During the probe is inserted into the soil to be measured, the interval for carrying out predeterminated frequency to the acceleration of the probe is surveyed
Amount, to obtain the acceleration discrete values for reflecting the probe acceleration variation；And
During the probe is inserted into the soil to be measured, the interval of predeterminated frequency is carried out to the pressure that the probe is subject to
Measurement, to obtain the pressure discrete values for reflecting the probe pressure variation.
8. device according to claim 6, which is characterized in that the denoising unit is further used for:
Denoising is carried out to the acceleration and the pressure using clipping average filter method, to eliminate sampled value deviation.
9. device according to claim 6, which is characterized in that the moisture acquiring unit is further used for:
Bimetallic ring electrode measurement is obtained using the signal source of 100M and the coaxial transmission line of blocked impedance based on standing-wave ratio method
The voltage signal taken is handled, and the analog voltage signal of the corresponding moisture content of the soil to be measured is obtained, by the simulation
Moisture measurement result of the voltage signal as the soil to be measured.
10. device according to claim 6, which is characterized in that the volumetric water content measuring unit is further used for:
Processing analysis is carried out to the moisture measurement result of the soil to be measured, obtains the volumetric water content of the soil to be measured；With
And
The degree of packing measurement result and the moisture measurement result are substituted into the relationship mould of soil density and volumetric water content
Type, to obtain the volumetric soil water content under the standard soil degree of packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610345195.2A CN106053330B (en) | 2016-05-23 | 2016-05-23 | Soil density and moisture combined measurement method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610345195.2A CN106053330B (en) | 2016-05-23 | 2016-05-23 | Soil density and moisture combined measurement method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106053330A CN106053330A (en) | 2016-10-26 |
| CN106053330B true CN106053330B (en) | 2018-12-18 |
Family
ID=57176668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610345195.2A Active CN106053330B (en) | 2016-05-23 | 2016-05-23 | Soil density and moisture combined measurement method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106053330B (en) |
Families Citing this family (42)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107741441B (en) * | 2017-09-21 | 2020-01-31 | 中国农业大学 | composite sensor for measuring silage parameters |
| US11641800B2 (en) | 2020-02-06 | 2023-05-09 | Deere & Company | Agricultural harvesting machine with pre-emergence weed detection and mitigation system |
| US11467605B2 (en) | 2019-04-10 | 2022-10-11 | Deere & Company | Zonal machine control |
| US11589509B2 (en) | 2018-10-26 | 2023-02-28 | Deere & Company | Predictive machine characteristic map generation and control system |
| US11957072B2 (en) | 2020-02-06 | 2024-04-16 | Deere & Company | Pre-emergence weed detection and mitigation system |
| US11079725B2 (en) | 2019-04-10 | 2021-08-03 | Deere & Company | Machine control using real-time model |
| US11240961B2 (en) | 2018-10-26 | 2022-02-08 | Deere & Company | Controlling a harvesting machine based on a geo-spatial representation indicating where the harvesting machine is likely to reach capacity |
| US11653588B2 (en) | 2018-10-26 | 2023-05-23 | Deere & Company | Yield map generation and control system |
| US11178818B2 (en) | 2018-10-26 | 2021-11-23 | Deere & Company | Harvesting machine control system with fill level processing based on yield data |
| US11672203B2 (en) | 2018-10-26 | 2023-06-13 | Deere & Company | Predictive map generation and control |
| US12069978B2 (en) | 2018-10-26 | 2024-08-27 | Deere & Company | Predictive environmental characteristic map generation and control system |
| US11234366B2 (en) | 2019-04-10 | 2022-02-01 | Deere & Company | Image selection for machine control |
| US11778945B2 (en) | 2019-04-10 | 2023-10-10 | Deere & Company | Machine control using real-time model |
| US12035648B2 (en) | 2020-02-06 | 2024-07-16 | Deere & Company | Predictive weed map generation and control system |
| US11477940B2 (en) | 2020-03-26 | 2022-10-25 | Deere & Company | Mobile work machine control based on zone parameter modification |
| US12013245B2 (en) | 2020-10-09 | 2024-06-18 | Deere & Company | Predictive map generation and control system |
| US11927459B2 (en) | 2020-10-09 | 2024-03-12 | Deere & Company | Machine control using a predictive map |
| US11874669B2 (en) | 2020-10-09 | 2024-01-16 | Deere & Company | Map generation and control system |
| US11849672B2 (en) | 2020-10-09 | 2023-12-26 | Deere & Company | Machine control using a predictive map |
| US11675354B2 (en) | 2020-10-09 | 2023-06-13 | Deere & Company | Machine control using a predictive map |
| US11592822B2 (en) | 2020-10-09 | 2023-02-28 | Deere & Company | Machine control using a predictive map |
| US11650587B2 (en) | 2020-10-09 | 2023-05-16 | Deere & Company | Predictive power map generation and control system |
| US11946747B2 (en) | 2020-10-09 | 2024-04-02 | Deere & Company | Crop constituent map generation and control system |
| US11711995B2 (en) | 2020-10-09 | 2023-08-01 | Deere & Company | Machine control using a predictive map |
| US11889788B2 (en) | 2020-10-09 | 2024-02-06 | Deere & Company | Predictive biomass map generation and control |
| US11825768B2 (en) | 2020-10-09 | 2023-11-28 | Deere & Company | Machine control using a predictive map |
| US11983009B2 (en) | 2020-10-09 | 2024-05-14 | Deere & Company | Map generation and control system |
| US12069986B2 (en) | 2020-10-09 | 2024-08-27 | Deere & Company | Map generation and control system |
| US11844311B2 (en) | 2020-10-09 | 2023-12-19 | Deere & Company | Machine control using a predictive map |
| US11849671B2 (en) | 2020-10-09 | 2023-12-26 | Deere & Company | Crop state map generation and control system |
| US11871697B2 (en) | 2020-10-09 | 2024-01-16 | Deere & Company | Crop moisture map generation and control system |
| US11845449B2 (en) | 2020-10-09 | 2023-12-19 | Deere & Company | Map generation and control system |
| US11635765B2 (en) | 2020-10-09 | 2023-04-25 | Deere & Company | Crop state map generation and control system |
| US11864483B2 (en) | 2020-10-09 | 2024-01-09 | Deere & Company | Predictive map generation and control system |
| US11474523B2 (en) | 2020-10-09 | 2022-10-18 | Deere & Company | Machine control using a predictive speed map |
| US11895948B2 (en) | 2020-10-09 | 2024-02-13 | Deere & Company | Predictive map generation and control based on soil properties |
| US11727680B2 (en) | 2020-10-09 | 2023-08-15 | Deere & Company | Predictive map generation based on seeding characteristics and control |
| US11889787B2 (en) | 2020-10-09 | 2024-02-06 | Deere & Company | Predictive speed map generation and control system |
| CN112326737A (en) * | 2020-11-10 | 2021-02-05 | 柴力 | Be used for interior tamped soil sample detection device of sandy soil area building foundation ditch |
| US12127500B2 (en) | 2021-01-27 | 2024-10-29 | Deere & Company | Machine control using a map with regime zones |
| US12082531B2 (en) | 2022-01-26 | 2024-09-10 | Deere & Company | Systems and methods for predicting material dynamics |
| US12058951B2 (en) | 2022-04-08 | 2024-08-13 | Deere & Company | Predictive nutrient map and control |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2758741Y (en) * | 2004-12-24 | 2006-02-15 | 中国农业大学 | Synchronous realtime measurer for soil section conic index and water ratio |
| CN1811415A (en) * | 2005-07-19 | 2006-08-02 | 中国农业大学 | Airborn walking soil moisture and compactedness synchronous real-time measurement sensor |
| CN204000818U (en) * | 2014-07-02 | 2014-12-10 | 四川农业大学 | A kind of soil compactibility determinator |
-
2016
- 2016-05-23 CN CN201610345195.2A patent/CN106053330B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2758741Y (en) * | 2004-12-24 | 2006-02-15 | 中国农业大学 | Synchronous realtime measurer for soil section conic index and water ratio |
| CN1811415A (en) * | 2005-07-19 | 2006-08-02 | 中国农业大学 | Airborn walking soil moisture and compactedness synchronous real-time measurement sensor |
| CN204000818U (en) * | 2014-07-02 | 2014-12-10 | 四川农业大学 | A kind of soil compactibility determinator |
Non-Patent Citations (3)
| Title |
|---|
| 一种土壤剖面水分与坚实度同步测量装置;朱兆龙 等;《江苏大学学报(自然科学版)》;20070731;第28卷(第4期);第280-283页 * |
| 农田土壤含水率与坚实度快速信息采集系统;邵玲 等;《农机化研究》;20070228(第2期);第83-86页 * |
| 土壤含水率及紧实度复合传感器的研究与开发;彭曾愉;《中国优秀硕士学位论文全文数据库 农业科技辑》;中国学术期刊（光盘版)电子杂志社;20111015(第10期);第2-34页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106053330A (en) | 2016-10-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106053330B (en) | Soil density and moisture combined measurement method and device | |
| Yang et al. | The effectiveness of digital soil mapping with temporal variables in modeling soil organic carbon changes | |
| CN110596247B (en) | Ultrasonic structure health monitoring method in temperature change environment | |
| JP4952162B2 (en) | Data processing apparatus, data processing method, and data processing program | |
| CN105612922B (en) | Cut quality appraisal procedure and device based on the vibration of cane harvesting machine cutterhead | |
| Horstman et al. | Wave attenuation in mangrove forests: Field data obtained in Trang, Thailand | |
| Zhao et al. | Watershed water-energy balance dynamics and their association with diverse influencing factors at multiple time scales | |
| CN113111799B (en) | Cultivated land soil fertility level monitoring method based on ensemble empirical mode decomposition | |
| Zhang et al. | Changes in the power spectrum of electrical signals in maize leaf induced by osmotic stress | |
| Donateo et al. | A case study of the performance of different detrending methods in turbulent-flux estimation | |
| CN204758542U (en) | Detection apparatus for metallic structure's crackle | |
| van Emmerik et al. | Ideas and perspectives: Tree–atmosphere interaction responds to water-related stem variations | |
| CN109635399A (en) | A kind of adding window Integral Transformation method of vibration acceleration signal | |
| CN108226389B (en) | Method and system for calculating transpiration amount of standing tree canopy | |
| 黒木信一郎 et al. | Monitoring of the elasticity index of melon fruit in a greenhouse | |
| von Randow et al. | Low-frequency modulation of the atmospheric surface layer over Amazonian rain forest and its implication for similarity relationships | |
| Sigmon et al. | Microscale pressure fluctuations in a mature deciduous forest | |
| CN113916193A (en) | Method for calculating hydrogeological parameters of aquifer by inversion | |
| CN105156901B (en) | A kind of optical fiber early warning system noise-reduction method and device based on wavelet analysis | |
| CN108062602A (en) | A kind of method for predicting greenhouse solanaceous vegetables crop assimilation products yield | |
| Reátegui-Zirena et al. | Growth rates and age estimations of the fuzzy pigtoe, Pleurobema strodeanum: a species newly listed under the Endangered Species Act | |
| Fery et al. | Numerical study of wind-generated waves in the Red Sea | |
| JP2021124343A (en) | Method for operation, operational device, and operational program | |
| RU2759762C1 (en) | Method for estimating the mechanical stability of silver birch in an urban environment | |
| CN104036307A (en) | Landscape pattern dimension recognition system based on response of zoobenthos community structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |