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Grain moisture condensation detection system based on microwave technique

A detection system, moisture technology, applied in radio wave measurement systems, material analysis using microwave means, radio wave reflection/re-radiation, etc. Effect

Inactive Publication Date: 2012-04-04
INST OF ELECTRONICS CHINESE ACAD OF SCI
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  • Abstract
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  • Grain moisture condensation detection system based on microwave technique
  • Grain moisture condensation detection system based on microwave technique
  • Grain moisture condensation detection system based on microwave technique

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Embodiment Construction

[0041] The main principle of using microwave technology to detect subsurface targets is to use the reflection characteristics of electromagnetic waves at the medium layer to continuously receive echoes from different positions on the surface to determine the characteristics of targets under the surface. The grain stored in a normal grain depot is evenly distributed, relatively dry, and basically has a uniform dielectric constant, while the moisture condensation area and moldy area of ​​the grain are high-moisture areas, and there are very obvious differences in dielectric properties from the dry grain area. According to the transmission characteristics of electromagnetic waves in the medium, there will be obvious reflection echoes when microwaves are transmitted to the boundary between the two, and the depth, shape and properties of the target can be interpreted by detecting parameters such as echo delay, intensity and spectral characteristics , so as to achieve the purpose of ...

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Abstract

The invention discloses a grain moisture condensation detection system based on microwave technique, relating a grain storage detection technique, comprising an antenna assembly, a control circuit, and an upper computer processing system, wherein, the antenna assembly transmits microwaves below to the grain surface and receives microwaves, the control circuit provides power supply and pulse signals required by the system and digital processing and transmitting the received signals, and the upper computer processing system receives data from the control circuit and displays the detection results at real time. The system can be used for detecting moisture condensing zone inside the grain stored in the grain bin, can be applied in daily detection of grain storage, can timely discover moisture condensation and avoid grain loss, and has important meaning to safe storage of grain.

Description

technical field [0001] The invention relates to the technical field of grain storage detection, in particular to a grain moisture condensation detection system based on microwave technology. Background technique [0002] The food issue is related to social development and people's life stability, so every populous country puts the food issue in an important position. Grain has the attribute of seasonal production and annual sales, which determines that a considerable amount of grain storage must be guaranteed for emergencies. During the storage of grain, certain storage conditions must be guaranteed, such as temperature, humidity, moisture, and insect-free conditions. [0003] Among many conditions, grain moisture is an important parameter. Moisture content is not only directly related to the weight of grain, but excessive moisture content is also one of the important reasons for grain mildew. Therefore, the grains put into storage are generally grains with relatively low...

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Application Information

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IPC IPC(8): G01N22/00G01S13/04
Inventor 任仁陈贤祥赵龙凤夏善红
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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