CN102175730B - Device for measuring soil moisture - Google Patents
Device for measuring soil moisture Download PDFInfo
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- CN102175730B CN102175730B CN 201110036902 CN201110036902A CN102175730B CN 102175730 B CN102175730 B CN 102175730B CN 201110036902 CN201110036902 CN 201110036902 CN 201110036902 A CN201110036902 A CN 201110036902A CN 102175730 B CN102175730 B CN 102175730B
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- 239000002689 soil Substances 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 239000007772 electrode material Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000012528 membrane Substances 0.000 abstract description 3
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- 238000002474 experimental method Methods 0.000 description 2
- 238000009434 installation 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
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
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- 230000009471 action Effects 0.000 description 1
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 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 device for measuring soil moisture, be specifically related to a kind of device for measuring soil moisture that utilizes microorganism electrochemical technique, belong to the soil ambit.
Background technology
In earth system, soil moisture is the important factor in land and 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 the fields such as weather, the hydrology, ecology, agricultural.The spatial and temporal distributions of soil moisture content and variation change to produce significantly on heat balance, land face general circulation and the soil moisture between land-atmosphere to be affected.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 Parameters in irrigation management and yield forecast pattern.Therefore, monitoring soil moisture is very problems of concerns of people always.
Classical method for determining soil moisture comprises weight moisture method, Neutron probe method, tensiometer method etc.The 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 larger, 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 the time of several seconds just can complete the mensuration of soil moisture, but due to 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 is also infeasible that battery is changed in regular going.
The microorganism electrochemical device is to utilize electrochemical techniques that microbial metabolism can be converted into a kind of device of electric energy.Not only can obtain electric energy from the organism of easy biochemical degradation, also can obtain electric energy from the organism of some difficult degradations.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 complete whole chemistry redox reaction, in this process, external circuit can form electric current.Pay close attention to its electrogenesis and degradation of substrates ability more than existing technical research, otherwise research is still waiting further exploration.
Summary of the invention
For shortcomings and deficiencies of the prior art, it is a kind of simple in structure and cost is lower, do not need to provide the device for measuring soil moisture 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 device for measuring soil moisture mainly is comprised of negative electrode, anode group, wire, resistance; Wherein by wire, 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 form.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 by web member, so that electrode is fixed on support.
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 device for measuring soil moisture 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 by web member, so that electrode is fixed on support; Then this anode group is inserted in soil, negative electrode directly is put on soil;
B, circuit connect
Negative electrode, anode group and resistance are cascaded with wire form a loop, and resistance is between negative electrode and anode;
C, running gear are measured soil moisture
Start device for measuring soil moisture, after 5～7 days, measure the magnitude of voltage between anode group and negative electrode; When measuring the moisture of soil, control in advance the moisture of soil, can obtain different magnitudes of voltage, with the computing formula of this moisture-voltage that obtains, and automatically calculate the water percentage of actual soil with this formula of demarcating.
Beneficial effect of the present invention is:
(1) the present invention is from 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 technique, calculates soil moisture;
(2) device for measuring soil moisture of the present invention is simple in structure, does not need too many maintenance, and construction and operating cost are low;
(3) device for measuring soil moisture 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-wire.
The schematic 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 device for measuring soil moisture is measured the situation of sediment moisture.
Fig. 4 device for measuring soil moisture is measured the situation of forest land moisture.
Embodiment
Below by specific embodiment, technical scheme of the present invention is described further.
The present embodiment explanation a kind of device for measuring soil moisture concrete structure of the present invention, application process and principle of work.
As shown in Figure 1, device for measuring soil moisture of the present invention mainly is comprised of negative electrode 1, anode group 2, wire 4, resistance 3; Wherein by wire 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 accompanying drawing 2 mark), and soil contact hole 6, fixed orifice 7, electrode 9 and support 8 form.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 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 soil, negative electrode 1 directly is put on soil.Negative electrode 1 and the anode group 2 of timer are installed, are connected with resistance 4 by wire 3, resistance 4 is between anode group 2 and negative electrode 1.Near 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 along with the variation of soil moisture, can have influence on the transmission speed of proton, thereby feed back on voltage signal, to indicate the content of soil moisture.
The present embodiment explanation utilizes moisture content determining device of the present invention to measure the experiment of sediment moisture.
The sediment of getting in domestic Taihu Lake, Jiangsu of 700 g is placed in reactor, by the described installation method of embodiment 1, carbon felt anode assembling is entered in support and fixing, is inserted in sediment.Negative electrode is placed on sediment, and then adds the water of certain 200 mL, after the microorganism electrochemical device connects resistance, move in the working environment of 25 ℃, domestication in 5 days finishes.Add the water of 200 mL, voltage increases sharply again, and causes the minimizing of moisture in sediment due to volatilization, reflects the moisture downward trend from voltage signal.Then seal the reactor mouth with waterproof ventilated membrane, prevent moisture evaporation, in the control reactor, Soil Water Content on different numerical value, can obtain respectively corresponding magnitude of voltage.And return these data and obtain formula Y=0.42X-121.2, Y representative voltage value (mV) wherein, X represents soil water content (mL).
The present embodiment explanation utilizes the device of microorganism electrochemical technique to measure the experiment of Forest Soil Moisture.
The soil of getting 600 g comes from the forest land, and is placed in reactor, by the described installation method of embodiment 1, carbon felt anode is packed in support and fixing, is inserted in soil.Negative electrode is placed on soil, and then adds 200 mL water, after the microorganism electrochemical device connects resistance, move in the working environment of 25 ℃, after domestication in 6 days finishes.Add the water of 200 mL, voltage increases sharply again, and causes the minimizing of soil moisture due to volatilization, reflects the moisture downward trend from voltage signal.Then seal the reactor mouth with waterproof ventilated membrane, prevent moisture evaporation, in the control reactor, Soil Water Content on different numerical value, can obtain respectively corresponding magnitude of voltage.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 (1)
1. a device for measuring soil moisture 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 support (8), form whole anode group (2); Then this anode group (2) is inserted in soil, negative electrode (1) directly is put on soil;
B, circuit connect
Negative electrode (1), anode group (2) and resistance (3) are cascaded with wire (4) form a loop, and resistance (3) is between negative electrode (1) and anode group (2);
C, running gear are measured soil moisture
Start device for measuring soil moisture, after 5～7 days, measure the magnitude of voltage between anode group (2) and negative electrode (1); When measuring the moisture of soil, control in advance the moisture of soil, can obtain different magnitudes of voltage, and then obtain the computing formula of moisture-voltage, and automatically calculate the water percentage of actual soil with described computing formula; The electrode material of described negative electrode (1) is the carbon felt; The material of the electrode (9) of described anode group (2) is the carbon felt.
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 |
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| 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 CN102175730A (en) | 2011-09-07 |
| CN102175730B true 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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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN201417777Y (en) * | 2009-03-27 | 2010-03-03 | 杭州浙大桑尼能源科技有限公司 | Solar structure on roof |
| CN101841053A (en) * | 2009-05-12 | 2010-09-22 | 中国科学院南京地理与湖泊研究所 | Microbiological fuel cell (MFC) and application thereof in removing organisms from natural sediments |
| CN101962232A (en) * | 2010-10-26 | 2011-02-02 | 中国科学院南京地理与湖泊研究所 | Sediment microorganism electrochemical device and application thereof |
-
2011
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN201417777Y (en) * | 2009-03-27 | 2010-03-03 | 杭州浙大桑尼能源科技有限公司 | Solar structure on roof |
| CN101841053A (en) * | 2009-05-12 | 2010-09-22 | 中国科学院南京地理与湖泊研究所 | Microbiological fuel cell (MFC) and application thereof in removing organisms from natural sediments |
| CN101962232A (en) * | 2010-10-26 | 2011-02-02 | 中国科学院南京地理与湖泊研究所 | Sediment microorganism electrochemical device and application thereof |
Non-Patent Citations (4)
| Title |
|---|
| 叶晔捷,等..微生物燃料电池产电的影响因素.《过程工程学报》.2009,第9卷(第3期), |
| 宋天顺,等..沉积物微生物燃料电池修复水体沉积物研究进展.《现代化工》.2009,第29卷(第11期), |
| 微生物燃料电池产电的影响因素;叶晔捷,等.;《过程工程学报》;20090630;第9卷(第3期);第526-530页 * |
| 沉积物微生物燃料电池修复水体沉积物研究进展;宋天顺,等.;《现代化工》;20091130;第29卷(第11期);第15-19页 * |
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