CN102175730A - Device for measuring soil moisture - Google Patents
Device for measuring soil moisture Download PDFInfo
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- CN102175730A CN102175730A CN2011100369027A CN201110036902A CN102175730A CN 102175730 A CN102175730 A CN 102175730A CN 2011100369027 A CN2011100369027 A CN 2011100369027A CN 201110036902 A CN201110036902 A CN 201110036902A CN 102175730 A CN102175730 A CN 102175730A
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- 239000002689 soil Substances 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 239000007772 electrode material Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000012528 membrane Substances 0.000 abstract description 3
- 239000008346 aqueous phase Substances 0.000 abstract 1
- 244000005700 microbiome Species 0.000 description 7
- 239000013049 sediment Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000002310 reflectometry Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004177 carbon cycle Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- 230000007269 microbial metabolism Effects 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
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Abstract
The invention relates to a device for measuring soil moisture, belonging to the field of soil knowledge. The device mainly comprises a negative pole, a positive pole, conducting wires and a resistor, wherein the positive pole also comprises a fixing strip, a soil contact hole, a fixing hole, a pole and a support; the negative pole in an aqueous phase, the positive pole in the soil and the resistor are connected in series through conducting wires to form a loop; and the resistor is arranged between the negative pole and the positive pole. After the positive pole is sequentially hung on a biological membrane, the device provided by the invention can be used for measuring the soil moisture. The device has the advantages of simple structure, lower cost, no need of additional power supplies and good economic benefit and application prospect.
Description
Technical field
The present invention relates to a kind of determining soil moisture device, be specifically related to a kind of determining soil moisture device that utilizes microorganism electrochemical technology, belong to the soil ambit.
Background technology
In earth system, surface soil moisture is the important factor in land and the ENERGY EXCHANGE BETWEEN SEA process, to top evapotranspire, the migration of water, carbon cycle have very strong control action, are the important indicators that the soil drought degree are weighed in fields such as weather, the hydrology, ecology, agricultural.The spatial and temporal distributions of soil moisture content and variation change the generation remarkable influence to heat balance, land face general circulation and the soil moisture between land-atmosphere.The monitoring of soil moisture is the important component part that agricultural procedure research and envirment factor are estimated on a large scale, is the important parameter in irrigation management and the yield forecast pattern.Therefore, monitoring soil moisture is the problem that people extremely pay close attention to always.
Classical method for determining soil moisture comprises weight moisture method, neutron instrument method, tensiometer method etc.This method can accurately be estimated the water cut of soil body section, and the soil layer of mensuration is more, and the degree of depth is bigger, but can only obtain the data of single-point, representative is limited in scope, and the real-time of data is relatively poor, and the manpower financial capacity consumes greatly, broad perspectives can not get embodying, and sample rate is slow, and data can not get upgrading in time.
And remote sensing technology can be rapidly, large tracts of land, obtain terrestrial information multidate.Therefore, research is very important and significant work with remote sensing detection soil moisture.At present ripe soil moisture detection method has the TDR(time domain reflectometry), FDR(frequency domain reflectometry), these sensors all only need several seconds time just can finish the mensuration of soil moisture, but because its circuit design more complicated, cost is difficult to reduce, and application is restricted.This outer sensor all needs the power supply that provides continual and steady, and in remote unattended open-air area, it also is infeasible that battery is changed in regular going.
The microorganism electrochemical device is to utilize electrochemical techniques microbial metabolism can be converted into a kind of device of electric energy.Not only can from the organism of easy biochemical degradation, obtain electric energy, also can from the organism of some difficult degradations, obtain electric energy.Its mechanism of action is: organism is decomposed by the electrogenesis microbiological oxidation near the anodic site, the electronics that produces is to anode, arrive negative electrode through external circuit again, proton is delivered to negative electrode by aqueous solution, and generate water with oxygen reaction, thereby finish whole chemistry redox reaction, external circuit can form electric current in this process.Pay close attention to its electrogenesis and degradation of substrates ability more than the existing technical research, otherwise research is still waiting further exploration.
Summary of the invention
At the deficiencies in the prior art and defective, it is a kind of simple in structure and cost is lower, do not need to provide the determining soil moisture device of additional power source that technical purpose of the present invention is to provide.
For realizing technical purpose of the present invention, technical scheme of the present invention is as follows.
One, a kind of determining soil moisture device mainly is made up of negative electrode, anode group, lead, resistance; Wherein by lead negative electrode, the anode group that is arranged in soil and resistance are together in series and form a loop, resistance is between negative electrode and anode group.
Anode group of the present invention is by fixed strip, web member, and the soil contact hole, fixed orifice, electrode and support are formed.Particularly, with the fixed strip that is provided with fixed orifice with the electrode concora crush on the support that is provided with the soil contact hole, and run through fixed orifice, support and electrode, so that electrode is fixed on the support by web member.
The electrode material of negative electrode of the present invention is the carbon felt; The electrode material of anode group of the present invention is the carbon felt.
The material of fixed strip of the present invention and support is that Polyvinylchloride or hardness are 60～95 plastic material.
Two, utilize determining soil moisture device of the present invention to measure the method for soil moisture.
Concrete application process is:
A, electrode are installed
With the fixed strip that is provided with fixed orifice with the electrode concora crush on the support that is provided with the soil contact hole, and run through fixed orifice, support and electrode, so that electrode is fixed on the support by web member; Then this anode group is inserted in the soil, negative electrode directly is put on the soil;
B, circuit connect
Negative electrode, anode group and resistance is cascaded with lead forms a loop, and resistance is between negative electrode and anode;
C, running gear are measured soil moisture
Start the determining soil moisture device, after 5～7 days, measure the magnitude of voltage between anode group and the negative electrode; When measuring the moisture of soil, control the moisture of soil in advance, can obtain different magnitudes of voltage, with the computing formula of this moisture-voltage that obtains, and calculate the water percentage of actual soil automatically with this formula of demarcating.
Beneficial effect of the present invention is:
(1) the present invention is with the different and advantage of prior art: the present invention utilizes the soil moisture height can have influence on the voltage output of microorganism electrochemical technology, calculates soil moisture;
(2) determining soil moisture apparatus structure of the present invention is simple, does not need too many maintenance, and construction and operating cost are low;
(3) determining soil moisture device of the present invention, its voltage signal are to produce by self microorganism electrochemical oxidation of organic compounds, thereby are not need to provide external energy.
Description of drawings
Fig. 1 structural representation of the present invention
Wherein, 1-negative electrode; 2-anode group; 3-resistance; The 4-lead.
The synoptic diagram of Fig. 2 anode construction
Wherein, 5-fixed strip; 6-soil contact hole; The 7-fixed orifice; The 8-support; The 9-electrode.
Fig. 3 determining soil moisture device is measured the situation of sediment moisture.
Fig. 4 determining soil moisture device is measured the situation of forest land moisture.
Embodiment
Below by specific embodiment technical scheme of the present invention is described further.
Embodiment 1
Present embodiment illustrates a kind of determining soil moisture device concrete structure of the present invention, application process and principle of work.
As shown in Figure 1, determining soil moisture device of the present invention mainly is made up of negative electrode 1, anode group 2, lead 4, resistance 3; Wherein by lead 4 negative electrode 1, the anode group 2 that is arranged in soil and resistance 3 are together in series and form a loop, resistance 3 is between negative electrode 1 and anode group 2.
As shown in Figure 2, anode group 2 of the present invention is by, fixed strip 5, web member (in the accompanying drawing 2 mark), and soil contact hole 6, fixed orifice 7, electrode 9 and support 8 are formed.Particularly, with the fixed strip 5 that is provided with fixed orifice 7 with electrode 9 concora crush on the support 8 that is provided with soil contact hole 6, and run through fixed orifice 7, support 8 and electrode 9 by web member, so that electrode 9 is fixed on the support 8, form whole anode group 2.
The electrode material of negative electrode 1 of the present invention is the carbon felt; The electrode material of anode group 2 of the present invention is carbon felts.
The material of fixed strip 5 of the present invention and support 8 is that Polyvinylchloride or hardness are 60～95 plastic material.
When running gear is measured soil moisture, anode group 2 is inserted in the soil, negative electrode 1 directly is put on the soil.The negative electrode 1 of device and anode group 2 during installation are connected with resistance 4 by lead 3, and resistance 4 is between anode group 2 and negative electrode 1.Near the anode group 2 anaerobion, as electron accepter, constantly with oxidation operation in its soil, thereby transmission electronics and proton form electric current to negative electrode 1 with electrode.And, can have influence on the transmission speed of proton, thereby feed back on the voltage signal, to indicate the content of moisture in the soil along with the variation of moisture in the soil.
The present embodiment explanation utilizes determination of moisture device of the present invention to measure the experiment of sediment moisture.
The sediment of getting in domestic Taihu Lake, Jiangsu of 700 g places reactor, carbon felt anode is assembled in the support and fixing by embodiment 1 described installation method, is inserted in the sediment.Negative electrode is placed on the sediment, and then add the water of certain 200 mL, after the microorganism electrochemical device connects resistance, move in 25 ℃ working environment, domestication in 5 days finishes.Add the water of 200 mL again, voltage increases sharply, and causes the minimizing of moisture in the sediment owing to volatilizing, and reflects the moisture downward trend from voltage signal.Seal the reactor mouth with waterproof ventilated membrane then, prevent moisture evaporation, holard content can obtain the correspondent voltage value respectively in the controlling reactor on different numerical value.And return these data and obtain formula Y=0.42X-121.2, Y representative voltage value (mV) wherein, X represents soil water content (mL).
Embodiment 3
The present embodiment explanation utilizes the device of microorganism electrochemical technology to measure the experiment of timbered soil moisture.
The soil of getting 600 g comes from the forest land, and places reactor, carbon felt anode is packed in the support and fixing by embodiment 1 described installation method, is inserted in the soil.Negative electrode is placed on the soil, and then add 200 mL water, after the microorganism electrochemical device connects resistance, in 25 ℃ working environment, move, after domestication in 6 days finishes.Add the water of 200 mL again, voltage increases sharply, and causes the minimizing of moisture in the soil owing to volatilizing, and reflects the moisture downward trend from voltage signal.Seal the reactor mouth with waterproof ventilated membrane then, prevent moisture evaporation, holard content can obtain the correspondent voltage value respectively in the controlling reactor on different numerical value.And return these data and obtain formula Y=0.53X-151.1, Y representative voltage value (mV) wherein, X represents soil water content (mL).
Claims (6)
1. a determining soil moisture device mainly is made up of negative electrode (1), anode group (2), lead (4), resistance (3); Wherein by lead (4) negative electrode (1), the anode group (2) that is arranged in soil and resistance (3) are together in series and form a loop, resistance (3) is between negative electrode (1) and anode group (2).
2. determining soil moisture device according to claim 1 is characterized in that: described anode group (2) is by fixed strip (5), web member, and soil contact hole (6), fixed orifice (7), electrode (9) and support (8) are formed; Wherein, with the fixed strip that is provided with fixed orifice (7) (5) with electrode (9) concora crush on the support that is provided with soil contact hole (6) (8), and run through fixed orifice (7), support (8) and electrode (9) by web member, so that electrode (9) is fixed on the support (8), form whole anode group (2).
3. determining soil moisture device according to claim 1 and 2, the electrode material that it is characterized in that described negative electrode (1) is the carbon felt.
4. determining soil moisture device according to claim 1 and 2 is characterized in that the material of the electrode (9) of described anode group (2) is the carbon felt.
5. determining soil moisture device according to claim 1 and 2, the material that it is characterized in that described fixed strip (5) and support (8) are that Polyvinylchloride or hardness are 60～95 plastic material.
6. determining soil moisture device according to claim 1 is measured the method for soil moisture:
A, electrode are installed
With the fixed strip that is provided with fixed orifice (7) (5) with electrode (9) concora crush on the support that is provided with soil contact hole (6) (8), and run through fixed orifice (7), support (8) and electrode (9) by web member, so that electrode (9) is fixed on the support (8), form whole anode group (2); Then this anode group (2) is inserted in the soil, negative electrode (1) directly is put on the soil;
B, circuit connect
Negative electrode (1), anode group (2) and resistance (3) is cascaded with lead (4) forms a loop, and resistance (3) is between negative electrode (1) and anode group (2);
C, running gear are measured soil moisture
Start the determining soil moisture device, after 5～7 days, measure the magnitude of voltage between anode group (2) and the negative electrode (1); When measuring the moisture of soil, control the moisture of soil in advance, can obtain different magnitudes of voltage, with the computing formula of this moisture-voltage that obtains, and calculate the water percentage of actual soil automatically with this formula of demarcating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110036902 CN102175730B (en) | 2011-02-13 | 2011-02-13 | Device for measuring soil moisture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110036902 CN102175730B (en) | 2011-02-13 | 2011-02-13 | Device for measuring soil moisture |
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| CN102175730A true CN102175730A (en) | 2011-09-07 |
| CN102175730B CN102175730B (en) | 2013-06-19 |
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| CN 201110036902 Expired - Fee Related CN102175730B (en) | 2011-02-13 | 2011-02-13 | Device for measuring soil moisture |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937621A (en) * | 2012-11-05 | 2013-02-20 | 南京航空航天大学 | Passive high-molecular polymer matrix humidity sensor and preparation and detection methods thereof |
| CN108318552A (en) * | 2018-01-24 | 2018-07-24 | 南京师范大学 | A kind of heavy metal pollution of water body monitoring method and device based on concentration cell |
| CN111201994A (en) * | 2020-01-16 | 2020-05-29 | 苏州易云生物科技有限公司 | Bury formula agricultural irrigation system under based on biological detection |
| CN112630271A (en) * | 2020-11-24 | 2021-04-09 | 南京师范大学 | Method for monitoring soil moisture diffusion based on concentration cell |
| CN114910627A (en) * | 2022-06-07 | 2022-08-16 | 安徽省农村综合经济信息中心（安徽省农业气象中心） | Method, device and equipment for determining quality of soil moisture data and storage medium |
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| CN2339988Y (en) * | 1998-09-08 | 1999-09-22 | 新疆农业科学院中心实验室 | Passive soil-water-content quickly detecting instrument |
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2011
- 2011-02-13 CN CN 201110036902 patent/CN102175730B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2339988Y (en) * | 1998-09-08 | 1999-09-22 | 新疆农业科学院中心实验室 | Passive soil-water-content quickly detecting instrument |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937621A (en) * | 2012-11-05 | 2013-02-20 | 南京航空航天大学 | Passive high-molecular polymer matrix humidity sensor and preparation and detection methods thereof |
| CN102937621B (en) * | 2012-11-05 | 2015-01-14 | 南京航空航天大学 | Passive high-molecular polymer matrix humidity sensor and preparation and detection methods thereof |
| CN108318552A (en) * | 2018-01-24 | 2018-07-24 | 南京师范大学 | A kind of heavy metal pollution of water body monitoring method and device based on concentration cell |
| CN108318552B (en) * | 2018-01-24 | 2023-08-15 | 南京师范大学 | Concentration battery-based water body heavy metal pollution monitoring method and device |
| CN111201994A (en) * | 2020-01-16 | 2020-05-29 | 苏州易云生物科技有限公司 | Bury formula agricultural irrigation system under based on biological detection |
| CN112630271A (en) * | 2020-11-24 | 2021-04-09 | 南京师范大学 | Method for monitoring soil moisture diffusion based on concentration cell |
| CN112630271B (en) * | 2020-11-24 | 2023-08-15 | 南京师范大学 | Method for monitoring soil moisture diffusion based on concentration battery |
| CN114910627A (en) * | 2022-06-07 | 2022-08-16 | 安徽省农村综合经济信息中心（安徽省农业气象中心） | Method, device and equipment for determining quality of soil moisture data and storage medium |
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| CN102175730B (en) | 2013-06-19 |
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