Grain moisture content online detection device of combine harvester and sampling mechanism

A combine harvester and detection device technology, applied in the field of intelligent agriculture, can solve the problems of low accuracy and low accuracy of grain moisture content

Pending Publication Date: 2020-03-31
NANJING AGRI MECHANIZATION INST MIN OF AGRI
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of low precision and low accuracy in measuring grain moisture content by capacitance method, and to provide an online detection device and sampling mechanism for grain moisture content of combine harvesters, which can quickly and economically complete the detection of grain moisture content At the same time, the detection accuracy is also greatly improved compared with the traditional capacitive detection structure

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  • Grain moisture content online detection device of combine harvester and sampling mechanism
  • Grain moisture content online detection device of combine harvester and sampling mechanism
  • Grain moisture content online detection device of combine harvester and sampling mechanism

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Embodiment Construction

[0024] Preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein.

[0025] like figure 1 As shown, an online detection device for grain moisture content of a combine harvester, the detection device includes: a sensor unit, a plate capacitor, a frequency detection circuit and an MCU processor, the plate capacitor is used to accommodate the grain to be measured, and the plate capacitor The signal input terminal of the frequency detection circuit is connected, and the sensor unit includes a temperature sensor and a grain firmness sensor, which are used to detect the real-time temperature and grain firmness of the grain to be measured contained in the plate capacitor, and the frequency output of the ...

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Abstract

The invention discloses a grain moisture content online detection device of a combine harvester and a sampling mechanism. The detection device comprises: a sensor unit, a polar plate capacitor, a frequency detection circuit and an MCU processor, the polar plate capacitor is used for accommodating grains to be detected; the polar plate capacitor is connected with the signal input end of the frequency detection circuit; and the sensor unit comprises a temperature sensor and a grain compactness sensor and is used for detecting the real-time temperature and the grain compactness of grains to be detected contained in the polar plate capacitor, and the frequency output of the frequency detection circuit and the signal output of the sensor unit are connected with the corresponding signal input ends of the MCU processor. The device can quickly and economically complete the detection of the grain moisture content, and meanwhile, the detection precision is also greatly improved compared with a traditional capacitance detection structure.

Description

technical field [0001] The invention relates to the field of intelligent agriculture, in particular to a device for detecting the moisture content of grains harvested by a harvester, more specifically an online detection device for the moisture content of grains of a combine harvester and a sampling mechanism. Background technique [0002] At present, there are many methods for detecting the moisture content of grains, mainly divided into capacitance method, resistance method, Karl Fischer method, nuclear magnetic resonance method, microwave method, acoustic method, infrared ray and electric oven method and other methods. At present, in the real-time detection of grain moisture, the capacitance method and the resistance method are the most widely used, but the detection accuracy is generally not high. The electric oven method is mainly used for laboratory grain drying and moisture content calibration. few. [0003] However, the capacitance method in the prior art has low pr...

Claims

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Application Information

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IPC IPC(8): G01N33/10G01N27/00G01D21/02G01N1/10
CPCG01N33/10G01N27/00G01D21/02G01N1/10
Inventor 刘政金诚谦杨腾祥李泽峰
Owner NANJING AGRI MECHANIZATION INST MIN OF AGRI
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