JPS57101715A - Method and device for detecting relative distance - Google Patents

Method and device for detecting relative distance

Info

Publication number
JPS57101715A
JPS57101715A JP17787680A JP17787680A JPS57101715A JP S57101715 A JPS57101715 A JP S57101715A JP 17787680 A JP17787680 A JP 17787680A JP 17787680 A JP17787680 A JP 17787680A JP S57101715 A JPS57101715 A JP S57101715A
Authority
JP
Japan
Prior art keywords
light
graduating
receiving device
objects
relative distance
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
JP17787680A
Other languages
Japanese (ja)
Inventor
Kenro Motoda
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.)
Motoda Electronics Co Ltd
Original Assignee
Motoda Electronics 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 Motoda Electronics Co Ltd filed Critical Motoda Electronics Co Ltd
Priority to JP17787680A priority Critical patent/JPS57101715A/en
Publication of JPS57101715A publication Critical patent/JPS57101715A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Optical Distance (AREA)

Abstract

PURPOSE:To detect relative distance between two objects without affecting motion between these two objects, by providing them with respective light- emitting devices and light-receiving devices, setting between them a graduating device optically and detecting a graduating position by the light-receiving position. CONSTITUTION:On one side A of two objects A and B which make one-dimensional relative movement, a light-emitting device 10 is provided, and on the other side B, a light-receiving device 20 is provided, and at the same time, a coordinate axis 1 is set in the direction of detecting relative distance from the light- receiving device 20, and graduating position 3a...3f are set optically toward the coordinate axis 1, and then, when the light-receiving device 20 is passing the graduating positions 3a...3f by the relative motion, modulating light fluxes 2a...2f entering the graduation positions 3a...3f are received by a light receiving device 20 and converted to electrical signals, and at the same time, graduating position in which the light-receiving device 20 is discriminated on the basis of the modulation frequency, and by doing so, a relative distance between the objects A and B is detected.
JP17787680A 1980-12-16 1980-12-16 Method and device for detecting relative distance Pending JPS57101715A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17787680A JPS57101715A (en) 1980-12-16 1980-12-16 Method and device for detecting relative distance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17787680A JPS57101715A (en) 1980-12-16 1980-12-16 Method and device for detecting relative distance

Publications (1)

Publication Number Publication Date
JPS57101715A true JPS57101715A (en) 1982-06-24

Family

ID=16038596

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17787680A Pending JPS57101715A (en) 1980-12-16 1980-12-16 Method and device for detecting relative distance

Country Status (1)

Country Link
JP (1) JPS57101715A (en)

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