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Detection device and method for on-line measurement of grain moisture content based on radio frequency transmission

A detection device and radio frequency transmission technology, which is applied in the direction of material analysis using radiation, can solve the problems of difficult control of detection accuracy and complex structure, and achieve the effect of simple structure, high measurement accuracy and wide measurement range

Active Publication Date: 2016-09-07
JIANGSU MAIHE INTERNET OF THINGS TECH
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Problems solved by technology

[0005] The purpose of the present invention is to provide a detection device and method for on-line measurement of grain moisture content based on radio frequency transmission, so as to solve the problems in the prior art that the structure of grain moisture content detection equipment is complicated and the detection accuracy is difficult to control

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  • Detection device and method for on-line measurement of grain moisture content based on radio frequency transmission
  • Detection device and method for on-line measurement of grain moisture content based on radio frequency transmission
  • Detection device and method for on-line measurement of grain moisture content based on radio frequency transmission

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Embodiment Construction

[0037] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0038] see figure 1 , Figure 4 and Figure 9 , the preferred embodiment of the present invention provides a detection device for on-line measurement of grain moisture content based on radio frequency transmission, comprising: a detection antenna 100, a high frequency circuit 200 and a low frequency circuit 300; the high frequency circuit 200 includes a signal generator for generating radio frequency signals 201, the signal generator 201 is connected to the power divider 202, the power divider 202 has a measurement signal output port and a local oscillator signal output port, the measurement signal output port is connected to the signal input end of the measurement antenna 100, and the local oscillator signal output port is connected to the demodulator Device 203, the signal output terminal of measuring antenna 100 is connected to demodulator 203; ....

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Abstract

The invention discloses a detection device and method for on-line measurement of grain moisture content based on radio frequency transmission, comprising: a detection antenna, a high frequency circuit and a low frequency circuit; The power divider has a measurement signal output port and a local oscillator signal output port, the measurement signal output port is connected to the signal input port of the measuring antenna, the local oscillator signal output port is connected to the demodulator, and the signal output port of the measuring antenna is connected to the demodulator ; The low-frequency circuit includes a signal amplifier connected to the demodulator, a microprocessor circuit connected to the signal amplifier, and a microprocessor circuit connected to a display circuit. The detection device has a wide measurement range and high measurement accuracy, which can reach 0.5% or even 0.1%. Because the radio frequency signal is penetrating, the measurement is not affected by the distribution of moisture. It can measure the moisture content of the grain surface and the grain interior. moisture content.

Description

technical field [0001] The invention relates to the technical field of grain moisture content detection, in particular to a detection device and method for on-line measurement of grain moisture content based on radio frequency transmission. Background technique [0002] Before the grain is traded or stored, it is necessary to test the moisture content of the grain, and it is necessary to meet the requirements of the country or relevant units for the moisture content. In order to reduce the moisture content of grains with excessive moisture content, it is necessary to use grain drying equipment to cycle and dry them until they meet the requirements. In order to understand the changes in grain moisture content in the dryer equipment in real time, and to stop the machine in time after reaching the moisture content requirements, it is necessary to measure and detect the grain moisture content online in real time. [0003] At present, the online detection equipment used at home ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N23/02
Inventor 孟敏艾绳勇常瑞峰陈建华
Owner JIANGSU MAIHE INTERNET OF THINGS TECH
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