Multiple optical axises photoelectric sensor

A photoelectric sensor, multi-optical axis technology, applied in the direction of instruments, circuits, electric switches, etc., to achieve the effect of preventing adverse situations
CN100444207CInactive Publication Date: 2008-12-17PANASONIC INDAL DEVICES SUNX
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
PANASONIC INDAL DEVICES SUNX
Publication Date
2008-12-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

PROBLEM TO BE SOLVED: To provide a multiple beam axis photoelectric sensor which can override the beam receiving signal from an optional beam receiving element for a predetermined time. SOLUTION: The multiple beam axis photoelectric sensor is provided with a beam emitter 1 equipped with two or more beam emitting elements 11a-11l and with a beam receiver 2 equipped with two and more beam receiving elements 21a-21l each of which constitutes a channel respectively in a pair with its counterpart in beam emitting elements 11a-11l, performing detection operation one by one for each channel based on whether or not the beam from each of emitting element 11a-11l is received by each of receiving element 21a-21l in the same channel. Optional channels among the two or more channels are designated by an external console 30 and also the designation is memorized to a memory 25A, therefore, a CPU 25 on the beam receiving side overrides, for only a predetermined period, beam receiving signals of the receiving elements 21a-21l consisting of the channels designated by the external console, based on the control signal which is input from an external control circuit through an input port 27.
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Description

technical field

[0001] The invention relates to a multi-optical axis photoelectric sensor with multiple channels formed by multiple light emitting and receiving mechanisms. Background technique

[0002] A multi-optical axis photoelectric sensor is arranged, for example, around a press installed in a production line at the boundary between a dangerous area where workers are prohibited from entering and a safe area where workers are allowed to enter. In this multi-optical axis photoelectric sensor, a light projector having a plurality of light projecting elements and a light receiver having a plurality of light receiving elements corresponding to each light projecting element are arranged oppositely, whereby a channel is formed by corresponding light projecting elements and light receiving elements. . The light-emitting elements installed in the light-emitting device perform light-emitting operations sequentially according to the predetermined light-emitting timing, and detec...

Claims

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