ATE187558T1 - DEVICE FOR OPTICALLY MEASURING THE ROTATIONAL SPEED OF AN OBJECT - Google Patents

DEVICE FOR OPTICALLY MEASURING THE ROTATIONAL SPEED OF AN OBJECT

Info

Publication number
ATE187558T1
ATE187558T1 AT94202757T AT94202757T ATE187558T1 AT E187558 T1 ATE187558 T1 AT E187558T1 AT 94202757 T AT94202757 T AT 94202757T AT 94202757 T AT94202757 T AT 94202757T AT E187558 T1 ATE187558 T1 AT E187558T1
Authority
AT
Austria
Prior art keywords
optically measuring
pattern
rotational speed
disk
light
Prior art date
Application number
AT94202757T
Other languages
German (de)
Inventor
Everardus Theodorus Gerar Turk
Engelen Gerard Van
Der Linde Jannis Pieter Van
Original Assignee
Koninkl Philips Electronics Nv
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
Priority claimed from BE9301026A external-priority patent/BE1007606A3/en
Application filed by Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Application granted granted Critical
Publication of ATE187558T1 publication Critical patent/ATE187558T1/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/486—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by photo-electric detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/489—Digital circuits therefor

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Optical Transform (AREA)
  • Gyroscopes (AREA)
  • Navigation (AREA)

Abstract

PURPOSE: To provide an improved device for optically measuring the angular velocity of a rotating object. CONSTITUTION: This device is equipped with a first disk 23 having a light interruption part 24 with a pattern of rotational symmetry, and working in cooperation with an object, a second disk 29 having the same pattern, and a detector 34 for receiving light transmitted through the pattern and converting the light into an electrical signal. This device has very high accuracy, high reliability and a compact form. Also, the linear velocity of a long object such as a recording tape can be measured by use of the device.
AT94202757T 1993-09-30 1994-09-26 DEVICE FOR OPTICALLY MEASURING THE ROTATIONAL SPEED OF AN OBJECT ATE187558T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9301026A BE1007606A3 (en) 1993-09-30 1993-09-30 Device for measuring the angular velocity of an object by optical means
EP94201618 1994-06-07

Publications (1)

Publication Number Publication Date
ATE187558T1 true ATE187558T1 (en) 1999-12-15

Family

ID=25662786

Family Applications (1)

Application Number Title Priority Date Filing Date
AT94202757T ATE187558T1 (en) 1993-09-30 1994-09-26 DEVICE FOR OPTICALLY MEASURING THE ROTATIONAL SPEED OF AN OBJECT

Country Status (7)

Country Link
JP (1) JPH07174771A (en)
KR (1) KR100364334B1 (en)
CN (1) CN1058571C (en)
AT (1) ATE187558T1 (en)
DE (1) DE69421992T2 (en)
HK (1) HK1012711A1 (en)
TW (1) TW264538B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8031454B2 (en) * 2007-02-01 2011-10-04 Sony Corporation Electronic system with dynamic thermal management
US9573598B2 (en) * 2012-10-05 2017-02-21 Koninklijke Philips N.V. Detection system using photo-sensors
CN108777578B (en) * 2018-06-29 2021-04-20 东莞市李群自动化技术有限公司 Encoder signal sampling method and device
CN109387656B (en) * 2018-11-01 2021-01-26 京东方科技集团股份有限公司 Rotating speed sensor, manufacturing method thereof, driving method thereof and electronic equipment

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3912926A (en) * 1974-10-18 1975-10-14 Los Angeles Scient Instr Opto-electronic incremental encoder
DE68906290T2 (en) * 1988-02-22 1993-09-23 Victor Company Of Japan DETECTOR SYSTEM WITH AN OPTICAL ROTATING ENCODER FOR DETECTING THE MOVEMENT OF A MOVING DEVICE.
BE1007404A3 (en) * 1993-08-09 1995-06-06 Agfa Gevaert Nv Encoder element.
EP0646796B1 (en) * 1993-09-30 1999-12-08 Koninklijke Philips Electronics N.V. Device for optically measuring the angular velocity of an object.

Also Published As

Publication number Publication date
KR960014937A (en) 1996-05-22
DE69421992T2 (en) 2000-06-29
CN1058571C (en) 2000-11-15
DE69421992D1 (en) 2000-01-13
HK1012711A1 (en) 1999-08-06
TW264538B (en) 1995-12-01
JPH07174771A (en) 1995-07-14
CN1112241A (en) 1995-11-22
KR100364334B1 (en) 2003-02-26

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties