Soil moisture detector suitable for different soil depths

A soil moisture and soil depth technology, which is applied in the field of agricultural science, can solve the problems such as the length of the probe should not be too long, and the depth range of the soil layer should be limited, and achieve the effects of simple input and output interface, low power consumption, and simplified production process.

Inactive Publication Date: 2016-07-06
CHENGDU KEYVOL AGRI TECHNOLGOY CO LTD
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Problems solved by technology

However, at present, most of the various commercial dielectric soil moisture sensors are needle-type structures. This structure has the characteristics of simple geometric structure and convenient manufacture. However, due to the influence of the strength of the probe, the length of the probe cannot be too long, which limits the measurement. The range of soil depth; in addition, due to the sensor's external dimensions and other reasons, it is inconvenient to bury it in the deep soil for measurement

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  • Soil moisture detector suitable for different soil depths
  • Soil moisture detector suitable for different soil depths

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Embodiment Construction

[0021] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0022] Such as Figure 1~Figure 2 As shown: a soil moisture detector applicable to different soil depths in this embodiment, including a soil moisture sensor and a data acquisition and display instrument connected by communication with the soil moisture sensor, the soil moisture sensor includes a casing, and the casing is divided into two parts sealed by epoxy resin There are two parts, the front shell and the rear shell, and the electronic circuit device board and shielded cable are arranged inside the shell. The electronic circuit device board is integrated with a passive crystal oscillator that oscillates through a clock circuit, and the passive crystal oscillator is connected with a Schmitt trigger in turn. device, signal attenuator, probe, true RMS detector, and power filter circuit for p...

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Abstract

The invention discloses a soil moisture detector applicable to different soil depths, which includes a soil moisture sensor and a data acquisition and display instrument communicatively connected with the soil moisture sensor. The soil moisture sensor includes a shell, and the shell is divided into a front shell sealed by epoxy resin There are two parts, the body and the rear shell. There are electronic circuit device boards and shielded cables inside the shell. The electronic circuit device board is integrated with a passive crystal oscillator that oscillates through a clock circuit. The passive crystal oscillator is connected with a Schmitt trigger, signal Attenuators, probes, true rms detectors, and power supply filtering circuits to provide a stable, ripple-free operating voltage. The invention has the advantages of low cost, simple structure, real-time measurement and applicable soil moisture of different soil depths.

Description

technical field [0001] The invention belongs to the field of agricultural science and technology, and in particular relates to a soil moisture detector. Background technique [0002] Soil moisture is one of the important factors affecting the growth of crops, and it is closely related to the growth status of crops. In precision agricultural production, long-term monitoring and timely acquisition of moisture content information in the soil are required to achieve precise irrigation, so as to meet the physiological water requirements of crops without wasting water resources. This requires a soil Moisture testing device. [0003] The measurement methods of soil moisture are: drying method, neutron method, resistance method, capacitance method, TDR (time domain reflection method), FDR (frequency domain reflection method) and SWR (standing wave method). The drying method has high measurement accuracy, but sampling measurement is required, and the measurement period is long, so ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/00
CPCG01N27/00
Inventor 李波
Owner CHENGDU KEYVOL AGRI TECHNOLGOY CO LTD
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