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Device for measuring soil moisture

A soil moisture and measuring device technology, applied in the field of soil science, achieves the effect of simple structure, low construction and operation cost

Active Publication Date: 2011-09-07
NANJING INST OF GEOGRAPHY & LIMNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The current technical research focuses more on its power generation and substrate degradation capabilities, and other research needs to be further explored

Method used

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  • Device for measuring soil moisture

Examples

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Embodiment 1

[0032] This embodiment illustrates the specific structure, application method and working principle of a soil moisture measuring device according to the present invention.

[0033] like figure 1 As shown, the soil moisture measuring device of the present invention is mainly composed of a cathode 1, an anode group 2, a wire 4, and a resistor 3; wherein the cathode 1, the anode group 2 in the soil, and the resistor 3 are connected in series through a wire 4 to form A loop with resistor 3 between cathode 1 and anode set 2.

[0034] like figure 2 As shown, the anode group 2 according to the present invention consists of a fixing bar 5, a connector (attached figure 2 Not marked in), soil contact hole 6, fixing hole 7, electrode 9 and bracket 8. Specifically, the electrode 9 is flatly pressed on the support 8 provided with the soil contact hole 6 with the fixing bar 5 provided with the fixing hole 7, and the fixing hole 7, the support 8 and the electrode 9 are penetrated by the...

Embodiment 2

[0039] This example illustrates the experiment of using the moisture measuring device of the present invention to measure the moisture content of sediments.

[0040] Take 700 g of the sediment in Taihu Lake in Jiangsu and place it in the reactor, assemble the carbon felt anode into the bracket and fix it according to the installation method described in Example 1, and insert it into the sediment. Place the cathode on the sediment, and then add a certain amount of 200 mL of water. After the microbial electrochemical device is connected to the resistance, it is operated in a working environment of 25°C, and the acclimatization is over for 5 days. When 200 mL of water was added, the voltage increased rapidly, and the moisture in the sediment decreased due to volatilization, which reflected the trend of moisture decline from the voltage signal. Then seal the reactor mouth with a waterproof and breathable membrane to prevent moisture volatilization, and control the soil water conte...

Embodiment 3

[0042] This example illustrates the experiment of using the device of microbial electrochemical process to measure the soil moisture of woodland.

[0043] Take 600 g of soil from the forest and put it in the reactor. According to the installation method described in Example 1, put the carbon felt anode into the bracket and fix it, and insert it into the soil. Place the cathode on the soil, and then add 200 mL of water. After the microbial electrochemical device is connected to the resistance, it is operated in a working environment of 25°C, and after 6 days of acclimatization. When 200 mL of water was added, the voltage increased rapidly, and the moisture in the soil decreased due to volatilization, which reflected the trend of moisture decline from the voltage signal. Then seal the reactor mouth with a waterproof and breathable membrane to prevent moisture volatilization, and control the soil water content in the reactor at different values, and the corresponding voltage valu...

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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 [0001] The invention relates to a soil moisture measuring device, in particular to a soil moisture measuring device using microbial electrochemical technology, which belongs to the field of soil science. Background technique [0002] In the earth system, surface soil moisture is an important factor in the energy exchange process between the land and the atmosphere. It has a strong control effect on land surface evapotranspiration, water migration, and carbon cycle. It is a measure of climate, hydrology, ecology, agriculture, etc. An important indicator of soil drought. The spatiotemporal distribution and variation of soil water content have a significant impact on land-atmosphere heat balance, land surface atmospheric circulation and soil temperature change. The monitoring of large-scale soil moisture is an important part of agricultural process research and environmental factor evaluation, and is an important parameter in irrigation management and yield for...

Claims

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Application Information

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IPC IPC(8): G01N27/26G01N27/327
Inventor 江和龙宋天顺
Owner NANJING INST OF GEOGRAPHY & LIMNOLOGY
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