JPS5488156A - Length measuring method - Google Patents

Length measuring method

Info

Publication number
JPS5488156A
JPS5488156A JP15621577A JP15621577A JPS5488156A JP S5488156 A JPS5488156 A JP S5488156A JP 15621577 A JP15621577 A JP 15621577A JP 15621577 A JP15621577 A JP 15621577A JP S5488156 A JPS5488156 A JP S5488156A
Authority
JP
Japan
Prior art keywords
spacing
coupler
disposed
length
time
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
JP15621577A
Other languages
Japanese (ja)
Inventor
Tagahiko Ohara
Hideo Aoki
Junji Nakatani
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.)
Nippon Telegraph and Telephone Corp
Ohkura Electric Co Ltd
Original Assignee
Nippon Telegraph and Telephone Corp
Ohkura Electric Co 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 Nippon Telegraph and Telephone Corp, Ohkura Electric Co Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP15621577A priority Critical patent/JPS5488156A/en
Publication of JPS5488156A publication Critical patent/JPS5488156A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

PURPOSE: To enable measurement to be made without detecting the time corresponding to the predetermined length by measuring the lengths of moving objects with a plurality of detectors disposed by leaving a spacing, based on the disposed spacing and detection time.
CONSTITUTION: Photo couplers 5, 6 each consisting of a light emitting device 3 and a photo detector 4 are disposed by having a centain spacing in the moving direction of an object 1. Now, the time since the object 1 moves in the arrow direction and the coupler 6 detects the object 1 until the object 1 goes out of the coupler 5 is detected with either coupler and is stored. The value adding the spacing of both couplers 5, 6 to the length calculated based on the detection time thus obtained is the length of the object 1.
COPYRIGHT: (C)1979,JPO&Japio
JP15621577A 1977-12-24 1977-12-24 Length measuring method Pending JPS5488156A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15621577A JPS5488156A (en) 1977-12-24 1977-12-24 Length measuring method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15621577A JPS5488156A (en) 1977-12-24 1977-12-24 Length measuring method

Publications (1)

Publication Number Publication Date
JPS5488156A true JPS5488156A (en) 1979-07-13

Family

ID=15622869

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15621577A Pending JPS5488156A (en) 1977-12-24 1977-12-24 Length measuring method

Country Status (1)

Country Link
JP (1) JPS5488156A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02179410A (en) * 1988-12-29 1990-07-12 Isuzu Motors Ltd Automatic discrimination of workpiece

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4927242A (en) * 1972-06-30 1974-03-11

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4927242A (en) * 1972-06-30 1974-03-11

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02179410A (en) * 1988-12-29 1990-07-12 Isuzu Motors Ltd Automatic discrimination of workpiece

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