FR2455727A1 - Moving assembly position measurement - using optical sensor with electronic circuit determining time periods for microprocessor - Google Patents

Moving assembly position measurement - using optical sensor with electronic circuit determining time periods for microprocessor

Info

Publication number
FR2455727A1
FR2455727A1 FR7911358A FR7911358A FR2455727A1 FR 2455727 A1 FR2455727 A1 FR 2455727A1 FR 7911358 A FR7911358 A FR 7911358A FR 7911358 A FR7911358 A FR 7911358A FR 2455727 A1 FR2455727 A1 FR 2455727A1
Authority
FR
France
Prior art keywords
electronic circuit
optical sensor
moving assembly
microprocessor
rotor
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
FR7911358A
Other languages
French (fr)
Other versions
FR2455727B3 (en
Inventor
Michel Robert
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.)
Societe des Telephones Ericsson SA
Original Assignee
Societe des Telephones Ericsson SA
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 Societe des Telephones Ericsson SA filed Critical Societe des Telephones Ericsson SA
Priority to FR7911358A priority Critical patent/FR2455727A1/en
Publication of FR2455727A1 publication Critical patent/FR2455727A1/en
Application granted granted Critical
Publication of FR2455727B3 publication Critical patent/FR2455727B3/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
    • G01D5/247—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using time shifts of pulses
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/268—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light using optical fibres

Abstract

The position of a moving assembly is measured w.r.t. a fixed indication by an optical sensor. An electronic circuit enables the time to be measured as the assembly travels between two points. This provides a digital output for a processor to perform other functions. A rotor (14) of an electric motor rotates coaxially with a shaft (11) in a bearing (13) in the casing (12). The shaft carries a disc (10) with a reflecting radial mark (18). The rotor passes a fixed reflecting mark (17) on the casing and an optical fibre (19) in the rotor assembly passes in front of the indicator marks. The optical fibre transmits light to an opto electronic detector (20) in which bistable inputs are gated to clock a counter to provide digital output pulses.
FR7911358A 1979-05-04 1979-05-04 Moving assembly position measurement - using optical sensor with electronic circuit determining time periods for microprocessor Granted FR2455727A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7911358A FR2455727A1 (en) 1979-05-04 1979-05-04 Moving assembly position measurement - using optical sensor with electronic circuit determining time periods for microprocessor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7911358A FR2455727A1 (en) 1979-05-04 1979-05-04 Moving assembly position measurement - using optical sensor with electronic circuit determining time periods for microprocessor

Publications (2)

Publication Number Publication Date
FR2455727A1 true FR2455727A1 (en) 1980-11-28
FR2455727B3 FR2455727B3 (en) 1982-03-26

Family

ID=9225078

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7911358A Granted FR2455727A1 (en) 1979-05-04 1979-05-04 Moving assembly position measurement - using optical sensor with electronic circuit determining time periods for microprocessor

Country Status (1)

Country Link
FR (1) FR2455727A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987001196A1 (en) * 1985-08-23 1987-02-26 Roberto Chiavaccini Method and device for measuring angular displacements
FR2599137A1 (en) * 1986-05-21 1987-11-27 Peugeot Device for measuring the angular position between two members which can move with respect to each other

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987001196A1 (en) * 1985-08-23 1987-02-26 Roberto Chiavaccini Method and device for measuring angular displacements
FR2599137A1 (en) * 1986-05-21 1987-11-27 Peugeot Device for measuring the angular position between two members which can move with respect to each other

Also Published As

Publication number Publication date
FR2455727B3 (en) 1982-03-26

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