JPS5639476A - Sensing system for object passing signal - Google Patents

Sensing system for object passing signal

Info

Publication number
JPS5639476A
JPS5639476A JP11425379A JP11425379A JPS5639476A JP S5639476 A JPS5639476 A JP S5639476A JP 11425379 A JP11425379 A JP 11425379A JP 11425379 A JP11425379 A JP 11425379A JP S5639476 A JPS5639476 A JP S5639476A
Authority
JP
Japan
Prior art keywords
signal
passing
sensing
devices
receiving unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP11425379A
Other languages
Japanese (ja)
Inventor
Haruki Inoue
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Engineering Co Ltd
Hitachi Ltd
Original Assignee
Hitachi Engineering Co Ltd
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Engineering Co Ltd, Hitachi Ltd filed Critical Hitachi Engineering Co Ltd
Priority to JP11425379A priority Critical patent/JPS5639476A/en
Publication of JPS5639476A publication Critical patent/JPS5639476A/en
Pending legal-status Critical Current

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  • Geophysics And Detection Of Objects (AREA)

Abstract

PURPOSE: To properly detect the object passing signal by a method wherein any of unnecessary signals generated from passing objects or generated without relating to passing objects are eliminated because of the number increased to 3 for the sensing devices to detect the object passing signal.
CONSTITUTION: Three sensing devices such as a photoelectric type device are used as the sensing device for object passing signal and three phototransmitting devices 22 and three photo-receiving devices 23 are disposed along the running direction of the conveyer 1. When light to the position variable photo receiving unit 24, the position stationary photo receiving unit 25 and the position variable photo receiving unit 26 all of which are equipped on the photo receiving device 23 is interrupted, then, the output signals 31W33 of the sensing units 24W26 are turned from "L" to "H". The signal obtained from passing through the "Not" element 27 and the signals 31 and 32 are supplied to the AND element 28, thus, resulting in obtaining AND. And the output of this element 28 is supplied to the state variation sensing device 29, and when the rise state variation is detected, the signal which passes through the object 2 is obtained at the output terminal 30.
COPYRIGHT: (C)1981,JPO&Japio
JP11425379A 1979-09-07 1979-09-07 Sensing system for object passing signal Pending JPS5639476A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11425379A JPS5639476A (en) 1979-09-07 1979-09-07 Sensing system for object passing signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11425379A JPS5639476A (en) 1979-09-07 1979-09-07 Sensing system for object passing signal

Publications (1)

Publication Number Publication Date
JPS5639476A true JPS5639476A (en) 1981-04-15

Family

ID=14633139

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11425379A Pending JPS5639476A (en) 1979-09-07 1979-09-07 Sensing system for object passing signal

Country Status (1)

Country Link
JP (1) JPS5639476A (en)

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