Title:
PHOTOELECTRIC SENSOR
Document Type and Number:
Japanese Patent JP2018124140
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To detect the presence/absence of an object without using an optical fiber.SOLUTION: A photoelectric sensor comprises: a plurality of light emitting elements 101 that emit light obtained by converting transmission signals; light receiving elements 102 that are provided to be paired with the light emitting elements 101 and receive light; signal transmission cables 103 that are provided respectively for the light emitting elements 101 and transmit the transmission signals to be output to the light emitting elements 101; signal transmission cables 104 that are provided respectively for the light receiving elements 102 and transmit receiving signals indicating the light received by the light receiving elements 102; a selection part 1083 that selects a pair of signal transmission cable 103 and signal transmission cable 104 for performing input/output of signals; a signal creation part 1084 that creates a transmission signal; a switching part 106 that outputs the created transmission signal to the selected signal transmission cable 103 and receives an input of a receiving signal transmitted through the selected signal transmission cable 104; and an object detection part 1086 that detects the presence/absence of an object on the basis of the receiving signal input to the switching part 106.SELECTED DRAWING: Figure 1
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Inventors:
KOSHI TOSHIKI
NOHARA ISAO
IIJIMA SHINJI
NOHARA ISAO
IIJIMA SHINJI
Application Number:
JP2017015568A
Publication Date:
August 09, 2018
Filing Date:
January 31, 2017
Export Citation:
Assignee:
AZBIL CORP
International Classes:
G01V8/20; H03K17/78
Domestic Patent References:
| JPH02135632A | 1990-05-24 | |||
| JPS54027369U1 | ||||
| JPS57157169A | 1982-09-28 | |||
| JPS604877A | 1985-01-11 | |||
| JPH01120122A | 1989-05-12 |
Attorney, Agent or Firm:
Hideaki Tazawa
Hamada Hatsune
Nakashima Shigeru
Tatsuya Sakamoto
Tsujioka Masaaki
Kazuma Inoue
Hamada Hatsune
Nakashima Shigeru
Tatsuya Sakamoto
Tsujioka Masaaki
Kazuma Inoue