High-speed ultra-wideband radar imaging type coal gangue radar identification system and identification method thereof

Abstract

The invention, which relates to the field of the coal gangue radar identification system and method, provides a high-speed ultra-wideband radar imaging type coal gangue radar identification system and an identification method thereof. Ultra-wideband pulse signals are transmitted to a coal gangue mixture and echoes generated by passing through the coal gangue by the signals have different phases; and on the basis of a relationship between the echo phases and the phase of the transmitted echo, a relationship between dielectric constants of different media is determined. Since the coal gangue is a weak conductive medium, electromagnetic waves are propagated through the coal gangue interface to generate an incident wave and a reflected wave that have a phase difference and the coal gangue is identified based on the phase difference between the incident wave and reflected wave. Besides, a transceiver antenna is installed at a tail beam of a hydraulic support and is used for transmitting signals, receiving echoes, and transmitting the signals to a data processing system; the data processing system analyzes the phase information of the echoes to identify the gangue in the coal gangue mixture. According to the invention, the influence by the underground humidity or dust is low; the e detection precision and the speed are high; and the labor intensity of the worker is reduced and thus the worker is kept away from the harsh environment.

Description

technical field [0001] The invention relates to a coal gangue radar identification system and method, in particular to a high-speed ultra-wideband radar imaging type coal gangue radar identification system and identification method. Background technique [0002] Coal is the main energy source in our country. Thick coal seams are rich in reserves and mainly adopt fully mechanized caving mining methods. Accelerating the development and application of unmanned coal mining technology has been listed as a key project in the energy field. The special action of "people" science and technology to strengthen safety has pointed out the direction for technological innovation in the coal industry, and the realization of intelligent fully mechanized caving mining in thick coal seams will become an important development trend. [0003] But coal caving in the process of top coal caving mining is a difficult problem to be solved urgently. At present, when the top-coal is mined, it mainly r...

AI Technical Summary

Problems solved by technology

At the same time, the existing coal and gangue recognition technologies, such as grayscale recognition, have relatively low accuracy in dusty environments; another example is that the efficiency of coal gangue recognition based on natural rays is not high

Although coal gangue identification is realized on the surface, the effect in actual production is not ideal

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