Patent ID: 9671522
Date: 2017-06-06
CPC Classifications: F16P,G01V

Claim:
1. A multi-optical axis photoelectric sensor system, comprising: an emitter unit including a plurality of emitter elements that are aligned linearly; a receiver unit including a plurality of receiver elements that are arranged to face the respective emitter elements; a detection processing unit configured to determine, in a detection area including a plurality of optical axes formed between the plurality of emitter elements and the plurality of receiver elements, whether each of the optical axes is in an interrupted state after optical axis selection corresponding to one scan, and output a detection signal based on a result of the determination; and a teaching processing unit configured to: determine a permissible range in which one or more of the optical axes is in an interrupted state; and perform processing to display a warning when a setting value is outside the permissible range, wherein when at least one of the plurality of optical axes is constantly interrupted by an object movable within the detection area, the detection processing unit outputs the detection signal upon determining that the number of optical axes in an interrupted state is greater than a preset maximum optical axis number, and also outputs the detection signal upon determining that the number of optical axes in an interrupted state is smaller than a preset minimum optical axis number, and wherein the teaching processing unit obtains information indicating the permissible range when a teaching processing has started and determines the permissible range based on the movable range of the object in the detection area.