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Plugging material detection early warning device and method based on voice recognition

A sound recognition and early warning device technology, applied in measuring devices, conveyor control devices, transportation and packaging, etc., to achieve the effect of solving alarm failures

Inactive Publication Date: 2009-12-30
SHANGHAI UNIVERSITY OF ELECTRIC POWER +1
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Problems solved by technology

[0015] The present invention aims at the problems caused by various disadvantages of the existing contact probe part, and proposes a sound recognition-based blocking material detection and early warning device and method. The abnormal sound of the material pipe due to material blockage can determine whether there is a fault in the operation, and a voice alarm signal will be given to remind the operator to take corresponding measures or automatically take shutdown measures to protect the system

Method used

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  • Plugging material detection early warning device and method based on voice recognition
  • Plugging material detection early warning device and method based on voice recognition
  • Plugging material detection early warning device and method based on voice recognition

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Embodiment Construction

[0027] In the long-distance conveying system, the method of segmental transfer is adopted, and the transfer point uses the drop pipe for transfer transition. In the normal conveying process, the materials on the conveyor belt (often with moisture and impurities) pass through the drop When the tube falls onto another transfer conveyor belt, there are sounds generated by the impact of the material and the wall of the drop tube, the material and the conveyor belt, and the friction between the materials and the air during the movement. The frequency of these sounds Concentrate on a relatively fixed frequency range. If the sound produced by the friction between materials in motion and the friction with air is filtered out, the detected sound will be similar to the sound of material blocks hitting metal and tightening belts. The two types of sounds are high-frequency audio with a certain intensity and regularity for human hearing, such as figure 2 The audio image is collected when ...

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Abstract

The invention relates to a plugging material detection early warning device and a method based on voice recognition, comprising the following steps: utilizing voice recognition technology to simulate the on-site auditory sense of persons; collecting on-site abnormal audio frequency signal of a blanking tube caused by plugging materials and analyzing; judging whether fault occurs in running; giving an audio warning signal; and reminding operators to take corresponding measures. The invention is a non-contact plugging material early warning method and solves the problem of warning malfunction caused by rapid wear of contact plugging material test detection pieces.

Description

technical field [0001] The invention relates to an equipment operation fault detection device, in particular to a sound recognition-based material blocking detection and early warning device and method. Background technique [0002] At present, conveyor belts and bucket wheels have been widely used in long-distance material conveying systems in coal-fired power plants, mines and other places. The material is accumulated from the conveyor belt to the bucket wheel machine. During the transfer process between the bucket wheel machine and the conveyor belt, and the conveyor belt and the conveyor belt, more drop pipes are required for transfer and transition, such as figure 1 Schematic diagram of the drop tube in the conveying system shown. Due to the moisture and many impurities in the material, the situation of sticking and blocking the discharge pipe often occurs. In order to ensure the long-term safe and stable operation of the conveying system and improve the automation of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H17/00B65G43/00
Inventor 沈文忠高幼年
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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