Vehicle mounted traveling type soil density sensor

A soil firmness and sensor technology, applied in the field of sensors for measuring soil firmness, can solve the problems of complex measuring mechanism, measurement error, inconvenient integration, etc., and achieve the effect of simplifying the measuring mechanism, improving the integration degree and improving the accuracy.

Inactive Publication Date: 2008-11-12
CHINA AGRI UNIV
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Problems solved by technology

[0004] However, in the existing technology, the basic design idea of ​​the soil firmness sensor is to transmit the soil resistance received by the cone head to the pressure sensor on the tail and the ground through the force rod. Measurement errors make it difficult to integrate into other vehicle-mounted farmland operations

Method used

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  • Vehicle mounted traveling type soil density sensor
  • Vehicle mounted traveling type soil density sensor
  • Vehicle mounted traveling type soil density sensor

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Embodiment Construction

[0023] Such as figure 1 As shown, the cone head 1 can be the conical type recommended by the American Society of Agricultural Engineers (ASAE) standard, or it can be a pyramid type or other shapes; the micro pressure unit 2 is based on the strain gauge or piezoelectric principle, reflecting the soil resistance on the cone head , without being affected by soil friction and travel depth; on the one hand, the support rod 3 serves as the support point of the micro pressure unit 2, and can also be further combined with other soil parameter measurements, such as the measurement of parameters such as soil moisture, electrical conductivity and temperature; The lead wire of miniature pressure unit is drawn from the center hole of support rod 3; Connecting rod 5 realizes the connection of probe (conical head 1, miniature pressure unit 2 and support rod 3 collectively) and vehicle-mounted equipment, with respect to soil firmness sensor of the present invention In other words, as long as ...

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Abstract

The invention relates to a car-carried walking soil compactness sensor, which comprises a conehead, a micro pressure unit, a support rod and a connecting rod that are connected into an L shape in sequence. The micro pressure unit further comprises a bearing elastomer, a protecting sleeve and an inductive element. Both ends of the elastomer are provided with a connecting thread for connecting the conehead and the support rod, the protecting sleeve is tubular with a bottom provided with a through hole, the bearing elastomer is inserted into the protecting sleeve by the through hole, and the inductive element is positioned in a space formed by the bearing elastomer and the protecting sleeve and adhered on the outer surface of the bearing elastomer. The soil compactness sensor of the invention has the advantages of simplifying measuring mechanism, improving integration level and accuracy and being beneficial to integrating the soil compactness sensor to other farmland car-carried operation processes.

Description

technical field [0001] The invention relates to a sensor for measuring soil firmness, in particular to a vehicle-mounted traveling soil firmness sensor. Background technique [0002] In recent years, with the large-scale and frequent use of various large-scale modern agricultural field machinery and equipment (such as field machinery such as fertilization, spraying, weeding, walking sprinkler irrigation, and crop harvesting), both developed and developing countries are facing soil The compaction problem is becoming more and more serious. Soil compaction is not only closely related to crop yield, seed germination soil breaking rate and plant root development, but also directly affects the migration process of soil moisture. A consequence of soil compaction is a significant change in surface soil porosity. Therefore, the reduction of soil air permeability, the reduction of surface water infiltration and the relative increase of runoff all directly reflect the degradation of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24
Inventor 马道坤孙宇瑞刘吉曾庆猛
Owner CHINA AGRI UNIV
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