Gain-adaptive adjustment method and system suitable for guided wave radar

Abstract

The invention provides a gain-adaptive adjustment method and system suitable for a guided wave radar. The method includes the steps of conducting analog-digital conversion on multiple collected original response signals, and then saving the signals; extracting a reflection waveform with the largest amplitude as an effective reflection waveform; searching for a waveform position corresponding to the effective reflection waveform; according to the waveform position, searching for an amplitude corresponding to the waveform position in the original response signals as the amplitude of the effective reflection waveform; comparing the amplitude of the effective reflection waveform with a preset amplitude threshold range, and when the amplitude of the effective reflection waveform is in the amplitude threshold range, maintaining a current gain gear; when the amplitude of the effective reflection waveform is larger than the maximum value of the amplitude threshold range, on the basis of the current gear, decreasing by one gear, and repeating the previous steps; when the amplitude of the effective reflection waveform is smaller than the minimum value of the amplitude threshold range, on thebasis of the current gear, increasing by one gear, and repeating the previous steps. According to the method and the system, adaptive adjustment can be automatically and intelligently conducted on gains of the guided wave radar.

Description

technical field [0001] The invention relates to the field of waveguide radar testing, in particular to a gain adaptive adjustment method and system suitable for guided wave radar. Background technique [0002] The guided wave radar level gauge used for continuous material level measurement in the field of industrial automation is a common instrument in modern industrial sites. The measurement principle is that electromagnetic waves are emitted through the probe. The circuit processing is sent to the processor for collection, and the effective echo is identified through intelligent software, so as to calculate the distance between the instrument and the material level, and then calculate the actual material height according to the height of the installed tank. [0003] The substance measured by guided wave radar can be liquid or solid. The dielectric constant characteristic of the measured substance is an important characteristic. The size of the electrical constant directly...

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Problems solved by technology

[0005] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a gain adaptive adjustment method and system suitable for guided wave radar, which is used to solve the problem that the gain of the guided wave radar level gauge cannot be automatically adjusted in the prior art. The problem

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