Soil probe for detecting water of soil based on time domain transmission

A soil moisture and time domain transmission technology, applied in the field of soil probes, can solve the problem that TDT time domain sensors cannot be plug-and-play

Active Publication Date: 2016-08-17
CHINA AGRI UNIV
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  • Application Information

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[0007] The technical problem to be solved by the present invention is the technic...

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  • Soil probe for detecting water of soil based on time domain transmission
  • Soil probe for detecting water of soil based on time domain transmission
  • Soil probe for detecting water of soil based on time domain transmission

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Embodiment Construction

[0052] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but should not be used to limit the scope of the present invention.

[0053] In the description of the present invention, it should be noted that unless otherwise specified, the meaning of "plurality" is two or more; the terms "upper", "lower", "left", "right", "inner ", "outside", "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the inventi...

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Abstract

The invention relates to a soil probe for detecting the water of soil based on time domain transmission. The soil probe comprises a probe sensing board, a water sensing and transmission line and a shell; the front end of the probe sensing board is provided with a front through hole, the probe sensing board is a 3-layer PCB, the middle portion of the water sensing and transmission line traverses through the front through hole, the water sensing and transmission line is welded to signal lines on the upper surface and the lower surface of the probe sensing board to form a signal transmission channel; the shell is made of a hard metal, the front side edge, the left side edge and the right side edge of the probe sensing board are wrapped with the shell, and the upper surface and the lower surface of the probe sensing board are exposed to sense water information; and the metal shell is connected with the ground lien of the probe sensing board. The soil probe has a simple structure and realizes plug-and-play; and after the soil probe is plugged to soil, the probe sensing board and the water sensing and transmission line fully contact the soil, and can sensitively sense the water information. Connection of the metal shell with the ground line of the sensing board guarantees fastening of the probe, avoids interference to high frequency signals, and improves the reliability of sensors.

Description

technical field [0001] The invention relates to soil moisture measurement technology, in particular to a soil probe for soil moisture measurement based on time domain transmission. Background technique [0002] At present, the mainstream techniques of soil moisture measurement at home and abroad are: Time Domain Reflectometry (TDR) method, Standing Wave Ratio (SWR) method, Frequency Domain Decomposition (FD) method in time Domain transmission (Time Domain Transmissometry, referred to as TDT) method. The soil moisture sensor based on the TDR principle is currently the most widely accepted and widely used instrument measurement method in the soil moisture measurement method. High measurement accuracy, fast response, wide measurement range, generally does not require calibration, easy to operate, can be used in the field and indoors, the biggest disadvantage of TDR is the circuit complexity, high cost, due to the lack of high-precision, fast, highly integrated chips , so ther...

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Application Information

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IPC IPC(8): G01N27/00
CPCG01N27/00
Inventor 石庆兰高万林董乔雪冯磊陈一飞徐云杨卫中孙明杨丽丽
Owner CHINA AGRI UNIV
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