| 摘要 |
For a manufacturing machine that moves in and out of a detection area of a multi-optical axis photoelectric sensor, floating blanking and blanking monitoring are activated without outputting a stop signal to stop the manufacturing machine every when the manufacturing machine moves out of the detection area. A detection processing unit performs, when at least one of the plurality of optical axes is constantly interrupted by the object, floating blanking of outputting 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 blanking monitoring of outputting 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 activates or deactivates the floating blanking and the blanking monitoring based on the signals received by the signal reception unit. |
| 主权项 |
1. A multi-optical axis photoelectric sensor (S), comprising:
an emitter unit (1) including a plurality of emitter elements (11) that are aligned linearly; a receiver unit (2) including a plurality of receiver elements (21) that are arranged to face the respective emitter elements (11); a detection processing unit (16, 26) configured to determine, in a detection area (R) including a plurality of optical axes formed between the plurality of emitter elements (11) and the plurality of receiver elements (21), 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 signal reception unit (30) configured to receive a first signal immediately before an object (60) that is movable within the detection area (R) enters the detection area (R), and receive a second signal immediately before the object (60) moves out of the detection area (R), wherein the detection processing unit (16, 26) is configured to perform, when at least one of the plurality of optical axes is constantly interrupted by the object (60), floating blanking of outputting 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 blanking monitoring of outputting 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 the detection processing unit (16, 26) activates or deactivates the floating blanking and the blanking monitoring based on the first signal and the second signal received by the signal reception unit (30). |
