Movable microwave moisture detector

Abstract

The invention provides a movable microwave moisture detector. The movable microwave moisture detector comprises a driving system, a microwave system and a battery system, wherein the driving system drives the entire apparatus to move; the microwave system is used for detecting moisture of an entering material; the battery system is used for powering the driving system and the microwave system; the microwave system is arranged beside the driving system and comprises an arc framework, a microwave signal source and a microwave receiving probe, an area encircled by the arc framework is a detection area, and a material to be detected passes through the detection area; the microwave signal source and the microwave receiving probe are respectively arranged at two opposite sides of the lower end of the arc framework, the microwave signal source transmits microwaves, and the microwaves are received by the receiving probe after penetrating through the material; and the microwave signal source transmits 3 to 10 predetermined microwave signals at a waveband S and a waveband X. The movable microwave moisture detector can rapidly complete the on-site material moisture detection and can be moved to a designated detection site, the detection work can be completed by using one movable microwave moisture detector in multiple factory areas and warehouse areas, the detection efficiency is improved, and the capital investment is reduced.

Description

technical field [0001] The invention discloses a movable microwave moisture detector, which belongs to the technical field of microwave detection. Background technique [0002] Microwave is a kind of electromagnetic wave. The dielectric constant and dielectric loss tangent determine the attenuation and phase change produced by the microwave transmission medium. Water is a polar molecule, and the dielectric constant and dielectric loss tangent of water are much higher than those of ordinary media. Usually, the dielectric constant and loss tangent of an aqueous medium are mainly determined by its moisture content. According to the attenuation of microwave power and the change of phase shift, the moisture content in the material can be calculated. Microwaves can not only detect the surface moisture of the material, but also detect the internal moisture, so the detected moisture is more representative, and the color and structure of the material will not affect the test result...

AI Technical Summary

Problems solved by technology

If the factory building or warehouse area is large, it is necessary to install multiple devices, which requires a large investment

Moreover, the microwave moisture meters on the market are all single-band designs, focusing on the X-band (9-10GHz), and using multiple linear regression methods to predict material moisture. Due to the complex online detection environment, the detection results of single-frequency design are easily interfered. Inaccurate

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