A soil profile moisture measuring device and its measuring method

Abstract

The invention discloses a soil profile moisture measuring device and a measuring method thereof. The device includes a host computer (1), a sensor node (2), an insulating sleeve (6), a sealed top cover (5) and a waterproof plug (7); the host computer (1) passes through a data acquisition and processing module (3 ) is connected to the sensor node (2); the insulating sleeve (6) is installed outside the sensor node (2), and the lower end of the insulating sleeve (6) is connected to the waterproof plug (7), the The upper end of the insulating sleeve (6) is connected to the sealing top cover (5) through the connecting body (8); the sensor node (2) includes two metal sheets (15), and the two metal sheets (15) are radially connected to each other The intervals are fixed on the surface of the insulating cylinder (12), and the two metal sheets (15) are respectively connected with the sensor circuit board (16). The method can adjust the number and spacing of the sensor nodes (2), set the address codes of each sensor node (2) of the device through the host computer (1), measure and store and display the results. The device has simple structure, easy layout, convenient use, and can be disassembled and assembled freely to realize the measurement of single-point or multi-point dynamic water content of the soil profile; the method is flexible and convenient, and realizes the dynamic measurement of soil at different depths.

Description

technical field [0001] The invention relates to the technical field of soil moisture measurement, in particular to a soil profile moisture measurement device and a measurement method thereof. Background technique [0002] In agricultural production, the development of water-saving irrigation technology and the determination of irrigation timing and irrigation amount according to the measured soil moisture status are of great significance to improve the efficiency of agricultural water use and alleviate the water resource crisis in our country. And through the real-time and accurate measurement of soil moisture, we can know the soil moisture in time, which plays an important leading role in water-saving irrigation. [0003] Most of the currently popular sensors for soil moisture measurement are designed based on the dielectric method. These soil moisture sensors designed based on the dielectric method are not easily affected by temperature, soil conductivity, soil salinity, ...

AI Technical Summary

Problems solved by technology

However, the structure of this type of sensor is complex. On the one hand, it needs to be used on the soil through the soil drill, and then the PVC sleeve is inserted into the soil, and finally put into the sensor node. The layout is difficult, time-consuming and laborious, and the workload is large; After taking it out and putting it into the PVC casing again, the air gap between the casing and the soil is random and uncertain, which will affect the measurement accuracy of the sensor

[0005] In summary, there is currently a lack of a non-probe soil moisture sensor with simple structure, easy layout, and convenient use. This type of sensor can not only measure the moisture of a single point in the soil profile, but also realize the simultaneous Measurement

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