Object passing detecting system and method thereof

Abstract

The invention discloses an object passing detecting system and a method thereof. The object passing detecting system comprises a photoelectric switch and reflectors which are correspondingly arranged at opposite-side frames of a detecting area. The light which is transmitted from the transmitting end of the photoelectric switch is repeatedly reflected through the reflectors that are correspondingly arranged, thereby forming W-shaped light which covers the detecting area and is received by the receiving end of the photoelectric switch. The object passing detecting system can improve accuracy in object passing detection. The object detecting system has advantages of simple structure, low cost, least number of photoelectric switches, and stable and reliable detecting signal.

Description

technical field [0001] The invention relates to the field of industrial automation, in particular to an object passing detection system and method. Background technique [0002] In industrial automation production equipment or monitoring systems, it is often necessary to detect whether an object passes through a fixed area. The common method is to use a photoelectric switch. Usually, the through-beam photoelectric switch is arranged in a fixed area, and the measuring light 3 emitted by the transmitting end 1 of the photoelectric switch passes through the detection area 4 from the cross-sectional direction of the object, and the light is received by the receiving end 2 of the photoelectric switch. When no object passes through the area, the receiving end 2 of the photoelectric switch can receive light, which means that no object passes through, such as Figure 1a As shown; when the passing object 5 passes through the detection area 4 longitudinally, it will block the measurin...

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Problems solved by technology

[0004] The present invention aims at one of many problems existing in the above-mentioned prior art, such as missed detection or complex structure, many output signals and complex processing, and increased equipment cost, when detecting large areas or small objects, and provides a method for using reflectors. The object passing detection system and method for realizing W-shaped light, thereby forming a W-shaped light covering the detection area through the combination of photoelectric switches and reflectors, improving the accuracy of object passing detection, with simple structure and low cost, the minimum number of photoelectric switches, and the detection signal Beneficial effects such as stability and reliability

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