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Composite sensor for synchronous real-time measuring three parameters and measuring apparatus

A composite sensor and real-time measurement technology, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of continuous real-time measurement and long measurement time, and achieve the effect of facilitating field movement, ensuring consistency and overcoming rebound

Inactive Publication Date: 2006-08-09
CHINA AGRI UNIV
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Problems solved by technology

[0006] In particular, it should be pointed out that the TDR method (Time Domain Reflectometry), which is commonly used to measure soil moisture content, takes a long time to measure, and requires a time interval of tens of seconds between two measurements, which cannot be achieved. Real continuous real-time measurement, and there are certain requirements for the length of the transmission wire, and there are many problems when it is fused with the pressure sensor

Method used

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  • Composite sensor for synchronous real-time measuring three parameters and measuring apparatus
  • Composite sensor for synchronous real-time measuring three parameters and measuring apparatus
  • Composite sensor for synchronous real-time measuring three parameters and measuring apparatus

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Embodiment 1

[0044] Embodiment 1, the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0045] refer to figure 1 , making the soil three-parameter sensor of this embodiment includes: a hollow circular rod 3 for supporting each sensor, a cone 8 at its end, which is a metal cone of standard size specified by the American Society of Agricultural Engineers. A circular insulator 9 made of PVC material, a soil moisture sensor 2, a PVC ring insulator 9, a soil conductivity sensor 5, a PVC ring insulator 9, a soil conductivity sensor 5, and a PVC ring are sequentially embedded in the round rod 3 The insulator 9, the soil conductivity sensor 5, the PVC ring insulator 9, the soil conductivity sensor 5 and the PVC ring insulator 9 are sequentially surrounded outside the hollow rod 3, and the pressure sensor 4 is installed on the other port of the hollow rod 3; the signal The wire 10 and the metal ring adopt a solderless connection, a...

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Abstract

Present invention relates to compound transducer for synchronizing real time measuring soil parameters and measurement equipment. Transducer includes steeple head for measuring soil cone index, transducer compound on steeple head for soil moisture percentage on dried soil basis and soil specific conductivity. Measurement equipment includes main upright post, base, guideway, transducer erecting bed, road wheel, data collector platform, controller and accumulator box, wherein said controller having signal input interface and signal output interface, stepping motor, position transducer, and pressure transducer. Said invented equipment realizes soil three parameters synchronizing real-time measurement through synchronizing real time measuring conic high frequency impedance, high frequency loss and taper stress exponent, determining soil moisture percentage on dried soil basis, soil specific conductivity and degree of compaction according to correlative multivariable mathematical model.

Description

technical field [0001] The invention relates to a sensor for measuring soil parameters and its supporting equipment, in particular to a composite sensor and its measuring equipment for synchronously and real-time measuring soil profile moisture content, electrical conductivity and compaction degree. Background technique [0002] In the process of agricultural production, soil not only provides physical support for plant growth, but also serves as a nutrient bank for plant growth. A large number of research results have shown that soil moisture content and compaction are two crucial physical parameters that affect the growth of crops. Water is the lifeblood to ensure the growth of crops. A series of reactions in the soil, energy and material exchange are all related to water, which is directly related to crop yield and quality. Soil compaction is not only closely related to the germination rate of seeds and root development of plants, but also directly affects the migration ...

Claims

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Application Information

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IPC IPC(8): G01N33/24G01N33/00G01N27/00
Inventor 孙宇瑞马道坤林剑辉
Owner CHINA AGRI UNIV
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