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Wireless safety light curtain detection method and light curtain thereof

A wireless security and detection method technology, applied in the direction of instruments, static indicators, etc., can solve the problems of short protection distance of signal cables, weak anti-electrical interference ability of safety light curtain, etc., achieve strong anti-light interference and electromagnetic interference ability, and easy to expand , Easy to install and use

Active Publication Date: 2018-01-30
JINING KELI PHOTOELECTRIC IND CO LTD
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a wireless safety light curtain detection method based on optical communication technology and its light curtain, which can solve the defects of weak anti-electrical interference ability of the original safety light curtain, need for signal cables and short protection distance

Method used

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  • Wireless safety light curtain detection method and light curtain thereof
  • Wireless safety light curtain detection method and light curtain thereof

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Embodiment Construction

[0009] refer to figure 1 , the light curtain is composed of the main scanning array MS and the slave scanning array SS, the main scanning array MS is composed of several light emitting units E1..En and light receiving units S1..Sn arranged in sequence, and the slave scanning array SS is composed of several light receiving units S1.. Sn and light-emitting units E1..En are arranged alternately in sequence, and each optical path of the main scanning array MS and the slave scanning array SS is identified by cross-emitting light according to the addressing sequence MB1, SB1, MB2, SB2..MBn, and SBn to form a cross light curtain.

[0010] The scan control link of the main array MS is composed of the main control unit MC and the interaction units A1 to An connected in a loop. The scanning control logic is: firstly, the main control unit MC hands the token MK1 to the interaction unit A1, and A1 sends out the coded light MB1 after getting the token, and prepares to receive the interacti...

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Abstract

A wireless safety light curtain detection method and its light curtain. The light curtain is composed of a main sensor scanning array and a secondary sensor scanning array. The cross transmission between them forms a cross light curtain, and the light path adopts the coded communication mode of light pulse to transmit and receive, and each light path uses different address codes. The whole light curtain system of the present invention has high optical path identification, strong anti-light interference and electromagnetic interference ability, high safety and reliability of scanning control logic, does not need troublesome wiring, is susceptible to electromagnetic interference, and signal cables with limited length, and is convenient and flexible to install and use. Long-distance protection can be realized.

Description

technical field [0001] The invention relates to photoelectric protection in safe production, in particular to a detection method of a wireless safety light curtain in safe production and the used light curtain. Background technique [0002] Photoelectric protectors are indispensable equipment for safe production and have been widely used in industrial sites to protect personal and equipment safety. The existing safety light curtain consists of a light emitter, a light receiver, a signal cable connected to the light emitter and a control signal cable output by the light receiver. The light-emitting array of the light emitter and the light-receiving array of the light-receiver form a light curtain under the control of synchronous scanning timing. When the light in the light curtain is blocked, the corresponding light path of the light receiver cannot receive the light signal, and the control circuit sends out a control signal to stop the equipment. However, this type of ligh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/00
Inventor 王学军李海明邵光存王振伟姜新军邵学涛马玉慧
Owner JINING KELI PHOTOELECTRIC IND CO LTD
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