Method and control system for detecting inclined chain of scraper conveyor based on image recognition

Abstract

The invention discloses a method and control system for detecting an inclined chain of a scraper conveyor based on image recognition. The control system comprises an image collection device, an imagerecognition module, a switching value output module, a programmable controller (PLC) module and an upper computer. The detecting method comprises the steps that real-time working video information ofthe scraper conveyor is collected; a single-frame image of a collected video is preprocessed; and a scraper contour is extracted from the preprocessed image, straight line information of the scraper contour is obtained, the angle between a scraper and the chain is obtained based on a straight line of the scraper contour and a straight line of the chain, and whether the scraper is inclined or not is judged according to the angle. The fault of the inclined chain of the scraper conveyor is real-timely detected on line through an image recognition and video analysis technology, an operation stateof the scraper conveyor is automatically controlled by combining a PLC, the automatic control degree of industrial production is increased, and the reliable technical guarantee is provided for the stability of industrial production and operation.

Description

technical field [0001] The invention relates to the field of fault detection of scraper conveyors, in particular to an image recognition-based method for detecting inclined chains of scraper conveyors and a control system. Background technique [0002] Scraper conveyor refers to a conveyor that is pulled by a scraper chain and transports bulk materials in a trough. It consists of three parts: the nose, the middle part and the tail part, and the middle part is composed of components such as transition slots, middle slots, chains and scrapers. The scraper conveyor uses the open chute as a receiving part for coal, gangue or materials, etc., and fixes the scraper on the chain to form a scraper chain as a traction member. When the transmission part of the machine head is started, it drives the sprocket on the machine head shaft to rotate, so that the scraper chain circulates and drives the material to move along the chute until it is unloaded at the machine head. The scraper ch...

AI Technical Summary

Problems solved by technology

When the inclined chain appears in the scraper conveyor, it will seriously affect the normal operation of the machine, and even cause serious safety hazards

In the actual use of the scraper conveyor, it is mainly judged by the observation of the inspection personnel whether there is an oblique chain on the scraper conveyor, which has serious hysteresis. In order to monitor the operation status of the scraper conveyor in real time and reduce the It is particularly important to seek a reliable scraper deflection detection method and device

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