Material level detecting method for tube mill based on multi-sensor fusing technology

Abstract

The invention relates to a drum ball mill level detection method, in particular to a drum ball mill level detection method based on a multi-sensor technique, and solves the problem of low detection precision in the existing drum ball mill level detection methods. The method comprises the following steps: (1) respectively acquiring noise signals s1, s2 and s3 at a drum of a drum ball mill, the position at which self-background noise is higher and the environment in which the drum ball mill is located; (2) performing conditioning, analog to digital conversion and pre-whitening processing on the noise signals s1, s2 and s3 to obtain signals w1, w2 and w3; (3) respectively performing blind source separation processing on the signals w1, w2 and w3 to obtain signals x1, x2 and x3; (4) screening information representing drum ball mill level information from the signals x1, x2 and x3, and performing discrete Fourier transform, module taking and normalization on the information to obtain an output signal z(n); and (5) computing the value of a drum ball mill level L according to the output signal z(n). The detection method is reasonable, can effectively reduce interference of environmental noise and the self-background noise, and can perform accurate and reliable detection on the drum ball mill level.

Description

technical field [0001] The invention relates to a method for detecting the material level of a drum type ball mill, in particular to a method for detecting the material level of a drum type ball mill based on multi-sensor fusion technology. Background technique [0002] Roller ball mill is a very important powder-making equipment in industrial production. It is widely used in electric power, mining, metallurgy, chemical industry, building materials and other industries. Its main function is to grind raw materials or semi-finished products into powder for subsequent processes. For example, in thermal power generation, the raw coal must be fully ground by a ball mill to achieve a certain fineness before it can enter the furnace for combustion; in the cement production process, the drum ball mill is also the main component of raw material grinding and cement grinding systems. [0003] The roller ball mill is a kind of equipment with high energy consumption and low efficiency, w...

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Problems solved by technology

[0005] In order to solve the problems that the existing detection method of the material level of the drum type ball mill cannot accurately reflect the information of the material level of the ball mill, the detection accuracy is low, the cost is high, and the measurement sensitivity is low, the invention provides a drum type ball mill material based on multi-sensor fusion technology. bit detection method

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