GB2002898A - Optoelectronic tachometer - Google Patents

Optoelectronic tachometer

Info

Publication number
GB2002898A
GB2002898A GB7832562A GB7832562A GB2002898A GB 2002898 A GB2002898 A GB 2002898A GB 7832562 A GB7832562 A GB 7832562A GB 7832562 A GB7832562 A GB 7832562A GB 2002898 A GB2002898 A GB 2002898A
Authority
GB
United Kingdom
Prior art keywords
pulses
frequency
primary
compensated
speed
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
GB7832562A
Other versions
GB2002898B (en
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of GB2002898A publication Critical patent/GB2002898A/en
Application granted granted Critical
Publication of GB2002898B publication Critical patent/GB2002898B/en
Expired 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
    • G01D5/26—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
    • G01D5/32—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 with attenuation or whole or partial obturation of beams of light
    • G01D5/34—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 with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/36—Forming the light into pulses
    • 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
    • G01P3/4802—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage by using electronic circuits in general

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

The tachometer comprises an optoelectronic pulse generator for generating primary pulses whose frequency is proportional to the speed of a machine shaft. In order to convert these pulses to an analogue signal proportional to speed, means 8 are provided for converting the primary pulses into secondary pulses whose width and height remain substantially unaltered as the frequency of the primary pulses is varied, and a filter 12 is provided for generating the analogue signal from the secondary pulses. Preferably also a frequency changer 3 is provided for changing the frequency of the primary pulses when within certain frequency ranges. In one embodiment this frequency change is compensated for by amplifying 11 the secondary pulses by an appropriate factor. In another embodiment the frequency change is compensated for by supplying pulses whose width depends on the frequency change undergone by the corresponding primary pulses. In this manner it is possible to detect a substantially greater speed range than with a conventional electromagnetic tachogenerator. <IMAGE>
GB7832562A 1977-08-12 1978-08-08 Tachometer Expired GB2002898B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2736418A DE2736418C2 (en) 1977-08-12 1977-08-12 Arrangement for determining the speed, the angle of rotation and the direction of rotation of machine shafts

Publications (2)

Publication Number Publication Date
GB2002898A true GB2002898A (en) 1979-02-28
GB2002898B GB2002898B (en) 1982-01-06

Family

ID=6016261

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7832562A Expired GB2002898B (en) 1977-08-12 1978-08-08 Tachometer

Country Status (5)

Country Link
AT (1) AT363148B (en)
CH (1) CH634925A5 (en)
DE (1) DE2736418C2 (en)
GB (1) GB2002898B (en)
SE (1) SE7808407L (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3147145C2 (en) * 1981-11-27 1983-10-13 Siemens AG, 1000 Berlin und 8000 München Method for generating a speed-proportional voltage and circuit arrangement for carrying out the method
DE3420807A1 (en) * 1984-06-04 1985-12-05 Siemens AG, 1000 Berlin und 8000 München Device for detecting the rotational speed of an electric machine
DE3716464A1 (en) * 1987-05-16 1988-12-08 Danfoss As ROTATION MACHINE WITH TURNING ANGLE MEASURING DEVICE
DE4207371C2 (en) * 1992-03-09 1995-08-03 Christian H A Buecker Rotary sensor and method for monitoring rotary movements
DE19640760C2 (en) * 1996-10-02 1999-08-12 Bosch Gmbh Robert Circuit arrangement for an inductive sensor with two separately arranged sensors

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB689107A (en) * 1949-04-27 1953-03-18 Electronique & Automatisme Sa Improvements in or relating to the measurement of the rotation of shafts or like rotary members
DE2324824C2 (en) * 1973-05-16 1974-10-17 Siemens Ag, 1000 Berlin Und 8000 Muenchen Circuit arrangement for correcting the measuring voltage of an analog speed sensor
DE2549953C3 (en) * 1975-11-07 1978-05-11 Wabco Westinghouse Gmbh, 3000 Hannover Circuit arrangement for obtaining output signals as a function of the output voltage of a sensor of an anti-lock device for motor vehicles

Also Published As

Publication number Publication date
ATA581978A (en) 1980-12-15
GB2002898B (en) 1982-01-06
DE2736418C2 (en) 1983-11-03
AT363148B (en) 1981-07-10
DE2736418B1 (en) 1978-12-21
SE7808407L (en) 1979-02-13
CH634925A5 (en) 1983-02-28

Similar Documents

Publication Publication Date Title
JPS5449147A (en) Recorder
JPS5391754A (en) Scannint type photo detector
FR2410356A1 (en) ARRANGEMENT OF ELECTRONIC OPTICAL LENSES FOR VARIABLE FOCUSING OF AN ELECTRON BEAM
GB2002898A (en) Optoelectronic tachometer
JPS5555591A (en) Semiconductor light amplifier
CA2060943A1 (en) Optical frequency deviation measure and control device for laser light
JPS53121295A (en) Laser machining equipment
JPS5414754A (en) Scanning optical system
GB1524376A (en) Detection system
JPS5566064A (en) Original reader
JPS542056A (en) Scanning type electron microscope
JPS53116833A (en) Compensation of registration for copying machine of enlarging type
JPS53106076A (en) Revolving speed detector
JPS55155254A (en) Pulse peak detecting circuit
JPS55138169A (en) Picture signal control system of picture input unit
JPS53100830A (en) Out-of-focus detector
JPS5410496A (en) Laser working apparatus
JPS54157641A (en) Light modulating circuit
JPS5266336A (en) Ledger reader
JPS5578381A (en) False and true discrimination unit of printed object
JPS55162175A (en) Photoelectric converter
JPS5413917A (en) Secondary exciter for induction motor
JPS5481832A (en) Tester for shutter
JPS6460063A (en) Noise reducer
JPS57136753A (en) Stroboscopic scanning electron microscope

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee