JPS57133306A - Proximity sensor - Google Patents

Proximity sensor

Info

Publication number
JPS57133306A
JPS57133306A JP1904481A JP1904481A JPS57133306A JP S57133306 A JPS57133306 A JP S57133306A JP 1904481 A JP1904481 A JP 1904481A JP 1904481 A JP1904481 A JP 1904481A JP S57133306 A JPS57133306 A JP S57133306A
Authority
JP
Japan
Prior art keywords
light
luminous elements
receiving element
detected
inclination
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.)
Granted
Application number
JP1904481A
Other languages
Japanese (ja)
Other versions
JPS6217163B2 (en
Inventor
Kensuke Hasegawa
Ryosuke Masuda
Shinya Kobayashi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP1904481A priority Critical patent/JPS57133306A/en
Publication of JPS57133306A publication Critical patent/JPS57133306A/en
Publication of JPS6217163B2 publication Critical patent/JPS6217163B2/ja
Granted 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Optical Transform (AREA)
  • Measurement Of Optical Distance (AREA)
  • Linear Or Angular Velocity Measurement And Their Indicating Devices (AREA)

Abstract

PURPOSE:To detect the position of an object by a simple mechanism irrespective of inclination of the object, by providing two pairs of light sources which are symmetrical with each other with a light-receiving element in the middle and are opposite to the object having non-irregulr-reflection surface, and driving each pair of the light sources by light whose phase are shifted by 90 deg.. CONSTITUTION:On positions which are symmetrically set on a straight line at equal intervals with a light-receiving element in the middle, 2 pairs of luminous elements 42, 43, 44 and 45 are arranged. The luminous elements 42 and 43 are driven in sine waves, and the luminous elements 44 and 45 are driven in cosine waves. A total of reflection lights on the surface of a non-irregular-reflectivity object i is detected by the light-receiving element. While power of the reflection lights becomes a sine wave with shifted position, this phase shift varies in accordance with distance from the object. By seeking phase shift from drive signals of the luminous elements 42 and 43 in this manner, a position of the object is detected. And therefore, an inclination of the objects surface i takes very little influence on the detected value.
JP1904481A 1981-02-13 1981-02-13 Proximity sensor Granted JPS57133306A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1904481A JPS57133306A (en) 1981-02-13 1981-02-13 Proximity sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1904481A JPS57133306A (en) 1981-02-13 1981-02-13 Proximity sensor

Publications (2)

Publication Number Publication Date
JPS57133306A true JPS57133306A (en) 1982-08-18
JPS6217163B2 JPS6217163B2 (en) 1987-04-16

Family

ID=11988416

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1904481A Granted JPS57133306A (en) 1981-02-13 1981-02-13 Proximity sensor

Country Status (1)

Country Link
JP (1) JPS57133306A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0560551A (en) * 1991-08-30 1993-03-09 Stanley Electric Co Ltd Optical distance measuring apparatus
JP2010197942A (en) * 2009-02-27 2010-09-09 Korg Inc Electronic musical instrument

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04179290A (en) * 1990-11-14 1992-06-25 Sankyo Seiki Mfg Co Ltd Magnetic sensor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0560551A (en) * 1991-08-30 1993-03-09 Stanley Electric Co Ltd Optical distance measuring apparatus
JP2010197942A (en) * 2009-02-27 2010-09-09 Korg Inc Electronic musical instrument

Also Published As

Publication number Publication date
JPS6217163B2 (en) 1987-04-16

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