Strip self-centering detecting method based on infrared ray

Abstract

The invention discloses a strip self-centering detecting method based on infrared ray. The specific process includes: step 1 (collecting information), when the strip shifts with lateral deviations between infrared transmitting tubes and infrared receiving tubes, signals transmitted from relevant infrared transmitting tubes are blocked, and the changing messages are transmitted to a single chip in a communication manner through the infrared receiving tubes; step 2 (processing information), when the single chip receives the changing messages of state signals of the infrared receiving tubes, according to a rectangular coordinate system set up with all position parameters of the infrared transmitting tubes and the infrared receiving tubes, all transmitting ray equations of the infrared transmitting tubes and position equations of the strip are obtained, border position parameters of the strip are obtained through operations, whether the strip deviates from a preset central line or not can be judged by comparisons, and meanwhile position deviation-correcting values are sent to a deviation-correcting mechanism to realize centering. The strip self-centering detecting method is wide in detecting range, good in stability and high in anti-interference capability.

Description

technical field [0001] The invention belongs to the technical field of automatic detection and uses infrared light to detect the edge displacement of a non-contact and opaque strip, in particular to an automatic centering detection method for a strip based on infrared light. Background technique [0002] With the development of the processing industry, not only the demand for metal strips is increasing, but also higher requirements are put forward for metal strips, that is, chemical composition, mechanical properties, dimensional tolerances, and appearance shapes are all controlled within a narrow range. Within the range, only such a strip can guarantee the stability of the production process, the least material consumption, the highest yield and low processing cost. During the coiling and unwinding of strip-shaped articles in printing, papermaking, coating, plastic film, steel rolling and other industries, due to the irregular winding of the previous process or the deviatio...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a strip automatic centering detection method based on infrared light, which solves the problem that the existing detection methods all use the principle of parallel light for detection, the detection accuracy is not high enough, the detection range is limited, and the limitations are relatively large. question

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