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.
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[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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