Novel soil moisture sensor

Abstract

The invention relates to a novel soil moisture sensor, which comprises a sensing probe formed by a plate capacitor, the input terminal of the sensing probe is connected to an oscillation signal generator, the output terminal is connected to a demodulation unit, the output of the demodulation unit is connected to an isolation amplifier, the output of the isolation amplifier is connected to a rectification unit, the output of the rectification unit is connected to a microprocessor, and the microprocessor is connected to a display and a wireless communication module. The soil moisture sensor can obtain the water content in soil in a real time mode, the measure result is accurate and stable, and the soil moisture sensor is suitable for soil in most regions in our country, the cost is low, and the soil moisture sensor enables popularization and usage at each region.

Description

[0001] technical field [0002] The invention relates to the technical field of soil moisture detection, in particular to a novel soil moisture sensor. Background technique [0003] In modern agriculture, the requirements for irrigation are very high. It is necessary to ensure the water demand of crops, and at the same time, the water should not exceed the standard, because excessive water is a waste of resources and power, and has a negative impact on the growth of crops. At present, the determination of moisture is mostly based on experience, and methods such as titration and weighing are also used for measurement. However, these methods require sampling, and the water content in the entire land is measured according to the water content of the samples, which is neither accurate nor possible. Online real-time acquisition of parameters is only an experimental method. There are general-purpose sensors of this type abroad that can be used, but their prices are very expensi...

AI Technical Summary

Problems solved by technology

[0003] In modern agriculture, the requirements for irrigation are very high. It is necessary to ensure the water demand of crops, and at the same time, the water cannot exceed the standard, because excessive water is a waste of resources and energy, and has a negative impact on the growth of crops.

At present, the determination of moisture is mostly based on experience, and methods such as titration and weighing are also used for measurement. However, these methods require sampling, and the water content in the entire land is measured according to the water content of the samples, which is neither accurate nor possible. Online real-time acquisition of parameters is only an experimental method. There are general-purpose sensors of this type abroad that can be used, but their prices are very expensive, and it is impossible to promote their use among farmers in our country.

However, foreign portable detectors cannot adapt well to the soil conditions in our country.

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