PHOTOELECTRIC SENSOR

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 pa...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: NOHARA ISAO, IIJIMA SHINJI, KOSHI TOSHIKI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung: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 【課題】光ファイバを用いずに、物体の有無を検出する。【解決手段】送信信号を変換した光を発光する複数の発光素子101と、発光素子101と対となって設けられ、光を受光する受光素子102と、発光素子101毎に設けられ、送信信号を伝送し、発光素子101に出力する信号伝送ケーブル103と、受光素子102毎に設けられ、受光素子102により受光された光を示す受信信号を伝送する信号伝送ケーブル104と、信号の入出力を行う一対の信号伝送ケーブル103及び信号伝送ケーブル104を選択する選択部1083と、送信信号を生成する信号生成部1084と、選択された信号伝送ケーブル103に生成された送信信号を出力し、選択された信号伝送ケーブル104により伝送された受信信号を入力する切替え部106と、切替え部106により入力された受信信号に基づいて、物体の有無を検出する物体検出部1086とを備えた。【選択図】図1