CN108871996A - A kind of method of on-site measurement mass water content of soil and the soil weight - Google Patents
A kind of method of on-site measurement mass water content of soil and the soil weight Download PDFInfo
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- CN108871996A CN108871996A CN201810990640.XA CN201810990640A CN108871996A CN 108871996 A CN108871996 A CN 108871996A CN 201810990640 A CN201810990640 A CN 201810990640A CN 108871996 A CN108871996 A CN 108871996A
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- 239000002689 soil Substances 0.000 title claims abstract description 157
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000005259 measurement Methods 0.000 title claims abstract description 33
- 238000005303 weighing Methods 0.000 claims abstract description 24
- 238000012360 testing method Methods 0.000 claims abstract description 12
- 238000012545 processing Methods 0.000 claims description 27
- 238000013459 approach Methods 0.000 claims description 2
- 238000005070 sampling Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 238000000643 oven drying Methods 0.000 description 7
- 238000000691 measurement method Methods 0.000 description 6
- 238000013500 data storage Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000009328 dry farming Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009313 farming Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
- G01N33/246—Earth materials for water content
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Abstract
The invention discloses the methods of a kind of on-site measurement mass water content of soil and the soil weight, belong to soil moisture content monitoring method technical field, the present invention acquires the wet soil sample that volume is V with bulk density ring, wet soil sample quality Ms is measured using meausring apparatus, utilize the volumetric(al) moisture content Wv of soil moisture content quick analyser on-site measurement soil, according to formula W m=Wv*V/ (Ms-Wv*V) * 100, the mass water content Wm of wet soil sample can be calculated, according to formula γ=Wv/Wm, the soil weight γ of wet soil sample can be calculated.The present invention is not in the case where having to baking oven, the mass water content of soil can be determined on the spot in soil testing point, to which the soil weight be calculated, it does not need that soil sample is taken back laboratory again, it is more convenient, and scene weighing is it is possible to prevente effectively from the error generated due to the water loss in wet soil sample, the data measured are more accurate.
Description
Technical field
The invention belongs to soil moisture content monitoring method technical field, be related to a kind of on-site measurement mass water content of soil and
The method of the soil weight.
Background technique
Soil volumetric water content is the sensor response variable and measurement result of most soil moisture monitor devices.But volume
Water content is influenced bigger by the soil weight, and topsoil soils are due to planting farming operation, and changing bulk density is again very big.
Therefore volumetric(al) moisture content has many limitations in the application of water-saving irrigation agricultural.In addition, generally rectifying an instrument because its stability is good
Also most to use mass water content.But in practical applications, mass water content is generally dried soil sample with baking oven, is then claimed
The method of weight is measured, and needs to take back soil sample laboratory, inconvenient on-site measurement.And on-site soil determination of moisture is usually
The volumetric(al) moisture content provided.If it is desired to converting between mass water content and volumetric(al) moisture content, need to use the appearance of soil
Weight, and the measurement of bulk density is also required to take back soil drying.Therefore, how at the scene, without soil can be measured in the case of baking oven
Mass water content is always a problem.
Summary of the invention
The present invention in order to overcome the drawbacks of the prior art, devises a kind of on-site measurement mass water content of soil and soil holds
The method of weight can determine on the spot the mass water content and soil of soil in soil testing point in the case where not having to baking oven
Bulk density does not need that soil sample is taken back laboratory again, more convenient, and scene weighing is it is possible to prevente effectively from wet soil sample
Water loss, the data measured are more accurate.
Specific technical solution adopted by the present invention is：A kind of side of on-site measurement mass water content of soil and the soil weight
Method, equipment used in this method includes sampler, measuring device, data processing module and display module, and key is：It is described
Sampler be bulk density ring, measuring device includes for measuring the soil moisture content quick analyser of soil volumetric water content, Yi Jiyong
In the weighing device of measurement wet soil sample quality, the signal output end of soil moisture content quick analyser and weighing device all with data processing
The input terminal of module connects, and the output end of data processing module is connect with display module, based on above equipment, this method include with
Lower step：
A, empty bulk density ring is put on weighing device, weighs peeling；
B, with the bulk density ring after peeling, wet soil sample is acquired in soil testing point, and the wet soil sample in bulk density ring is repaired
It is flat, obtain bulk density ring to be measured；
C, bulk density ring to be measured is put on weighing device, the wet soil sample quality Ms measured is sent to data by weighing device
Processing module；
D, it is measured with soil moisture content quick analyser in soil testing point, the volume of aqueous that soil moisture content quick analyser will measure
Amount Wv is sent to data processing module, and quality is calculated according to formula W m=Wv*V/ (Ms-Wv*V) * 100 in data processing module
Soil weight γ is calculated according to formula γ=Wv/Wm in water content Wm, and the V in formula is wet soil sample volume, as bulk density
The volume of ring；
E, calculated result is sent to display module and shown by data processing module.
In step a, weighing device is the electronic balance that sensibility reciprocal is 0.01g.
It in stepb, is with repairing mamoty or repair native knife for the wet soil sample equating in bulk density ring.
In step d, soil moisture content quick analyser is TDR or FDR soil moisture content quick analyser.
It in step d, is measured within the scope of 2-8cm around the place of acquisition wet soil sample.
The weighing device is electronic balance, and soil moisture content quick analyser includes tacheometer ontology and measuring head, described
Equipment further includes the side cover that shell and shell are locked, and tacheometer ontology and data processing module are all immobilized in the shell portion,
Measuring head is located at hull outside, offers measuring mouth and display window on the top plate of shell, and electronic balance is inlaid at measuring mouth,
Display module is inlaid at display window.
It is additionally provided with operation panel on the top plate of shell, peeling key, weight in wet base key, measurement are provided on operation panel
Key, saving button resurvey key and on/off key, and above-mentioned all keys are all connect with data processing module.
The data processing module includes micro controller unit MCU and data memory module, soil moisture content quick analyser and
The signal output end of weighing device is all connect with the input terminal of micro controller unit MCU, and the output end of micro controller unit MCU is same
When connect with data memory module and display module.
The micro controller unit MCU is stored by its data-signal, address signal and read-write control signal and data
Module connection, micro controller unit MCU are connect by its data-signal, address signal and display control signal with display module.
The beneficial effects of the invention are as follows：The wet soil sample for being V with bulk density ring acquisition volume, measures wet soil using meausring apparatus
Sample quality Ms, using the volumetric(al) moisture content Wv of soil moisture content quick analyser on-site measurement soil, data processing module is according to formula
The mass water content Wm of wet soil sample can be calculated in Wm=Wv*V/ (Ms-Wv*V) * 100, according to formula γ=Wv/Wm,
The soil weight γ of wet soil sample can be calculated.The present invention can work as in the case where not having to baking oven in soil testing point
Field recognition goes out the mass water content and the soil weight of soil, does not need that soil sample is taken back laboratory again, more convenient, and
Scene weighing is it is possible to prevente effectively from the error generated due to the water loss in wet soil sample, the data measured are more accurate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of device therefor in the present invention.
Fig. 2 is the structural schematic diagram of shell in Fig. 1.
In attached drawing, 1 represents display module, and 2 represent electronic balance, and 3 represent measuring head, and 4 represent shell, and 4-1 represents top plate,
4-2 represents bottom plate, and 4-3 represents side plate, and 4-4 represents elastic jacket, and 4-5 represents cover board, and 5 represent peeling keys, 6 represent weight in wet base by
Key, 7 represent measurement key, and 8 represent saving button, and key is resurveyed in 9 representatives, and 10 represent on/off key.
Specific embodiment
The present invention will be described in detail below with reference to specific embodiments：
Specific embodiment, a kind of method of on-site measurement mass water content of soil and the soil weight are set used in this method
Standby includes sampler, measuring device, data processing module and display module 1, as shown in Figure 1, the sampler is to hold
Weight ring, measuring device include soil moisture content quick analyser for measuring soil volumetric water content and for measuring wet soil sample
The signal output end of the weighing device of quality, soil moisture content quick analyser and weighing device all connects with the input terminal of data processing module
Connect, the output end of data processing module is connect with display module 1, wherein data processing module include micro controller unit MCU and
Input terminal of the signal output end of data memory module, soil moisture content quick analyser and weighing device all with micro controller unit MCU
The output end of connection, micro controller unit MCU is connect with data memory module and display module 1 simultaneously.Micro controller unit MCU
It is connect by its data-signal, address signal and read-write control signal with data memory module, micro controller unit MCU is by it
Data-signal, address signal and display control signal are connect with display module 1.Data memory module is for storing soil testing
Point, the testing time, volumetric(al) moisture content, mass water content and bulk density data storage.Display module 1 is for showing that soil is surveyed
Pilot, the testing time, volumetric(al) moisture content, mass water content and bulk density LCD display.
Weighing device is electronic balance 2, and soil moisture content quick analyser includes tacheometer ontology and measuring head 3, the equipment
It further include the side cover that shell 4 and shell 4 are locked, tacheometer ontology and data processing module are all fixed on inside shell 4,
Measuring head 3 is located at outside shell 4, and measuring mouth and display window are offered on the top plate of shell 4, and electronic balance 2 is inlaid in measurement
At mouthful, display module 1 is inlaid at display window.By tacheometer ontology, data processing module, electronic balance 2 and display module 1
It is all integrated in inside shell 4, when carrying is more convenient, whole more neat appearance.
Operation panel, measuring mouth and display window are additionally provided on the top plate of shell 4 on the top plate of shell 4 along left and right
Direction arrangement, operation panel are located at below measuring mouth and display window, and peeling key 5, weight in wet base key are provided on operation panel
6, key 7, saving button 8 are measured, resurveys key 9 and on/off key 10, above-mentioned all keys all connect with data processing module
It connects.The division of labor of each key is clear, and when operation is more intuitive, simple and convenient.
As shown in Fig. 2, shell 4 includes top plate 4-1, bottom plate 4-2 and four side plate 4-3, operation is offered on a side plate
Window, side cover are arranged at action pane and are locked with side plate 4-3, and the upper surface of four side plate 4-3 is all protruded in top plate
Be formed as an accommodating chamber above 4-1 and above top plate 4-1, the elastic jacket 4-4 of C-shaped, measuring head 3 are fixed in accommodating chamber
It is clamped with elastic jacket 4-4, is provided with cover board 4-5 above accommodating chamber, the edge of cover board 4-5 offered line gap, cover board
Be formed as detachable connection between 4-5 and side plate 4-3.Tacheometer device does not need in use, measuring head 3 is connected to elastic clip
It covers in 4-4, cover board 4-5 and side plate 4-3 is locked, the line between measuring head 3 and tacheometer ontology passed through line
Gap enters in accommodating chamber.It needs to extract measuring head 3 in use, disassembling cover board 4-5, not need in use, will
Measuring head 3 turns back in elastic jacket 4-4, and structure is simple, easy to use.Meanwhile cover board 4-5 can also play protection and show
The effect for showing module 1, electronic balance 2 and operation panel, avoid the equipment do not need using when accidentally encountered and generated
Maloperation, more securely and reliably.In order to avoid measuring head 3 is directly with elastic jacket 4-4 rigid contact and in swapping process repeatedly
In be worn, be provided with elastic protection layer on elastic jacket 4-4 inner wall, good protective action can be played.
It can be connected by hasp between cover board 4-5 and side plate 4-3, it can also be by being bolted, the present invention is in cover board
There are symmetrically arranged two coattail strips in the lower end surface 4-5, and the upper surface side plate 4-3 offers dovetail groove, cover board 4-5 by coattail strip and
The cooperation of dovetail groove and side plate 4-3 grafting, firm and reliable connection are simple and convenient without by external equipment when dismounting.
Bulk density ring is collided with damage in the handling process in order to prevent, is fixed with positioning sleeve in accommodating chamber, in positioning sleeve
It is fixed with elastic cord breaker on wall, the inserting of bulk density ring is fixed in positioning sleeve when not used.
Bulk density ring used in the present invention includes ring body and lid, and the both ends of ring body are both provided with lid, and lid is Qian word
The internal diameter of shape structure, lid is equal to ring body outer diameter, when acquiring wet soil sample, first separates two lids with ring body, then uses ring
Body goes to sample, after the completion of sampling, with repairing mamoty or repair native knife by the intracorporal wet soil sample equating of ring, then by two lids and ring
Body fastens, and can prevent the intracorporal soil of ring from outflowing and influencing the accuracy of measurement data.
Based on above equipment, this approach includes the following steps：
A, on/off key is pressed, the switch of equipment is opened, empty bulk density ring is put on electronic balance, by peeling key, is given
Bulk density ring weighs peeling, and the sensibility reciprocal of electronic balance is 0.01g；
B, two lids are separated with ring body, (is inserted into ring body with ring body in soil testing point acquisition wet soil sample
Wet soil sample is acquired in soil), and with repairing mamoty or repairing native knife for the intracorporal wet soil sample equating of ring, then by two lids with
Ring body fastens, and obtains bulk density ring to be measured；
C, bulk density ring to be measured is put on electronic balance, the wet soil sample quality Ms measured is sent to micro-control by electronic balance
Then device unit MCU processed presses weight in wet base key, then wet soil sample quality Ms is sent to data storage by micro controller unit MCU
It is stored, if it is desired to if re-measuring, first by key is resurveyed, then press weight in wet base key again；
D, (i.e. all in ring body insertion point around the place of acquisition wet soil sample with the measuring head of soil moisture content quick analyser
Enclose) it measures within the scope of 2-8cm, the volumetric(al) moisture content Wv measured is sent to micro controller unit by soil moisture content quick analyser
Volumetric(al) moisture content Wv is sent to data storage and stored by MCU, micro controller unit MCU, then by measurement key, then micro-
Mass water content Wm is calculated according to formula W m=Wv*V/ (Ms-Wv*V) * 100 in controller unit MCU, according to formula γ=
Soil weight γ is calculated in Wv/Wm, and the V in formula is wet soil sample volume, the as volume of bulk density ring, measures before starting
Specific value is stored into data storage by micro controller unit MCU；
E, calculated result is sent to LCD display by micro controller unit MCU, can be shown on LCD display unearthed
Then the specific value of the volumetric(al) moisture content Wv of earth, mass water content Wm and bulk density γ press saving button, the then above-mentioned number measured
Value can be saved in data storage simultaneously, and measurement result can be exported after the completion of measurement, finally press on/off key, pass hull closure
Switch.
The derivation principle of formula W m=Wv*V/ (Ms-Wv*V) * 100 used is as follows in the present invention：
Formula 1., Wm=Mw/Md*100, Wm is mass water content, and Mw is the quality of the soil water in wet soil sample, and Md is wet
The quality of dry ground in soil sample sheet；
Formula 2., Mw=Wv*V, Wv be using soil moisture content quick analyser measurement soil volumetric(al) moisture content, V is wet soil
Sample volume, the as volume of bulk density ring；
Formula 3., Md=Ms-Mw, Ms be wet soil sample quality；
2. and 3. formula is updated in 1., mass water content Wm=Wv*V/ (Ms-Wv*V) * of you can get it soil
100。
In Dry Farming Agriculture Inst., Hebei Prov. Academy of Agriculture and Forestry S's experiment centre, five wet soil samples, appearance used are chosen within 2018
Volume, that is, each wet soil sample volume V=100cm of weight ring3, measured respectively each with oven drying method, on-site measurement method of the invention
The mass water content of wet soil sample, the data obtained are as shown in Table 1 below：
The volumetric(al) moisture content and mass water content that 1 two methods of table respectively obtain
The mass water content obtained with oven drying method and on-site measurement method of the invention is compared, result is for example following
Shown in table 2：
The comparison for the mass water content that 2 two methods of table respectively obtain
The volumetric(al) moisture content obtained with oven drying method and on-site measurement method of the invention is compared, result is for example following
Shown in table 3：
The comparison for the volumetric(al) moisture content that 3 two methods of table respectively obtain
The soil weight obtained with oven drying method and on-site measurement method of the invention is compared, for example following table of result
Shown in 4：
The comparison for the soil weight that 4 two methods of table respectively obtain
By the data in table 2 it is found that the mass water content obtained with on-site measurement method of the invention and oven drying method obtained
Mass water content is very close；By the data in table 3 it is found that the volumetric(al) moisture content that is measured with soil moisture content quick analyser of the present invention with
The volumetric(al) moisture content obtained with oven drying method is also very close；By the data in table 4 it is found that being calculated with formula of the invention
The soil weight and the soil weight obtained with oven drying method are also very close.So with method on-site measurement soil quality of the invention
Water content and the soil weight are that there is no problem, and on-site measurement method of the invention has actual use value, can be made extensively
With.
The present invention do not have to baking oven in the case where, can soil testing point determine on the spot soil mass water content and
The soil weight does not need that soil sample is taken back laboratory again, more convenient, and scene weighing is it is possible to prevente effectively from due to wet
Water loss in soil sample sheet and the error generated, the data measured are more accurate.
Claims (9)
1. a kind of method of on-site measurement mass water content of soil and the soil weight, equipment used in this method includes sampling dress
It sets, measuring device, data processing module and display module (1), it is characterised in that：The sampler is bulk density ring, measurement
Device includes the soil moisture content quick analyser for measuring soil volumetric water content and the weighing for measuring wet soil sample quality
The signal output end of device, soil moisture content quick analyser and weighing device is all connect with the input terminal of data processing module, at data
The output end of reason module is connect with display module (1), is based on above equipment, this approach includes the following steps：
A, empty bulk density ring is put on weighing device, weighs peeling；
B, with the bulk density ring after peeling, wet soil sample is acquired in soil testing point, and by the wet soil sample equating in bulk density ring, is obtained
To bulk density ring to be measured；
C, bulk density ring to be measured is put on weighing device, the wet soil sample quality Ms measured is sent to data processing by weighing device
Module；
D, it is measured with soil moisture content quick analyser in soil testing point, the volumetric(al) moisture content Wv that soil moisture content quick analyser will measure
It is sent to data processing module, it is aqueous that according to formula W m=Wv*V/ (Ms-Wv*V) * 100 quality is calculated in data processing module
Wm is measured, soil weight γ is calculated according to formula γ=Wv/Wm, the V in formula is wet soil sample volume, as bulk density ring
Volume；
E, calculated result is sent to display module (1) and shown by data processing module.
2. the method for a kind of on-site measurement mass water content of soil and the soil weight according to claim 1, feature exist
In：In step a, weighing device is the electronic balance that sensibility reciprocal is 0.01g.
3. the method for a kind of on-site measurement mass water content of soil and the soil weight according to claim 1, feature exist
In：It in stepb, is with repairing mamoty or repair native knife for the wet soil sample equating in bulk density ring.
4. the method for a kind of on-site measurement mass water content of soil and the soil weight according to claim 1, feature exist
In：In step d, soil moisture content quick analyser is TDR or FDR soil moisture content quick analyser.
5. the method for a kind of on-site measurement mass water content of soil and the soil weight according to claim 1, feature exist
In：It in step d, is measured within the scope of 2-8cm around the place of acquisition wet soil sample.
6. the method for a kind of on-site measurement mass water content of soil and the soil weight according to claim 1, feature exist
In：The weighing device is electronic balance (2), and soil moisture content quick analyser includes tacheometer ontology and measuring head (3), described
Equipment further includes shell (4) and the side cover that shell (4) are locked, and tacheometer ontology and data processing module are all fixed on shell
Body (4) is internal, and measuring head (3) is located at shell (4) outside, offers measuring mouth and display window, electronics on the top plate of shell (4)
Balance (2) is inlaid at measuring mouth, and display module (1) is inlaid at display window.
7. the method for a kind of on-site measurement mass water content of soil and the soil weight according to claim 6, feature exist
In：Operation panel is additionally provided on the top plate of shell (4), be provided on operation panel peeling key (5), weight in wet base key (6),
Measurement key (7), resurveys key (9) and on/off key (10) at saving button (8), above-mentioned all keys all with data processing
Module connection.
8. the method for a kind of on-site measurement mass water content of soil and the soil weight according to claim 1, feature exist
In：The data processing module includes micro controller unit MCU and data memory module, and soil moisture content quick analyser and weighing fill
The signal output end set all is connect with the input terminal of micro controller unit MCU, the output end of micro controller unit MCU simultaneously with number
It is connected according to memory module and display module (1).
9. the method for a kind of on-site measurement mass water content of soil and the soil weight according to claim 8, feature exist
In：The micro controller unit MCU connects by its data-signal, address signal and read-write control signal and data memory module
It connects, micro controller unit MCU is connect by its data-signal, address signal and display control signal with display module (1).
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| CN201810990640.XA CN108871996B (en) | 2018-08-28 | 2018-08-28 | Method for measuring soil mass water content and soil volume weight on site |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112400681A (en) * | 2020-10-30 | 2021-02-26 | 涿州市禄丰农业技术开发有限公司 | Soilless culture method for vegetables |
| CN113155666A (en) * | 2021-03-12 | 2021-07-23 | 江苏光质检测科技有限公司 | Soil detection device and soil water content and volume weight detection method |
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