JPS5639476A - Sensing system for object passing signal - Google Patents
Sensing system for object passing signalInfo
- 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
Links
Landscapes
- 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
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) |
-
1979
- 1979-09-07 JP JP11425379A patent/JPS5639476A/en active Pending
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