GB1053444A - - Google Patents

Info

Publication number
GB1053444A
GB1053444A GB1053444DA GB1053444A GB 1053444 A GB1053444 A GB 1053444A GB 1053444D A GB1053444D A GB 1053444DA GB 1053444 A GB1053444 A GB 1053444A
Authority
GB
United Kingdom
Prior art keywords
counter
gate
period
speedometers
synchronism
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.)
Expired
Application number
Publication date
Publication of GB1053444A publication Critical patent/GB1053444A/en
Expired legal-status Critical Current

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
    • G01P3/489—Digital circuits therefor

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Stepping Motors (AREA)
  • Measurement Of Unknown Time Intervals (AREA)

Abstract

1,053,444. Speedometers. FORD MOTOR CO. Ltd. May 15, 1965, No. 20624/65. Heading G4H. The speed of a vehicle is represented by the frequency of a pulse train, a gate is opened for a predetermined period T1 to pass the pulses to a counter, at the end of T1 the gate remains closed for a further period T2 to allow a reading to be made, e.g. by lamps connected to the counter, and at the end of T2 the counter is reset. Also at the end of T2, the gate control circuit is prepared to start the next period T1 in synchronism with an input pulse.
GB1053444D Expired GB1053444A (en)

Publications (1)

Publication Number Publication Date
GB1053444A true GB1053444A (en) 1900-01-01

Family

ID=1757563

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1053444D Expired GB1053444A (en)

Country Status (1)

Country Link
GB (1) GB1053444A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614615A (en) * 1968-08-23 1971-10-19 Canadian Nat Railway Co Railway vehicle speed indication system
FR2156067A1 (en) * 1971-10-06 1973-05-25 Lumenition Ltd
FR2213502A1 (en) * 1973-01-06 1974-08-02 Przemyslowy Instytut Automatyk

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614615A (en) * 1968-08-23 1971-10-19 Canadian Nat Railway Co Railway vehicle speed indication system
FR2156067A1 (en) * 1971-10-06 1973-05-25 Lumenition Ltd
FR2213502A1 (en) * 1973-01-06 1974-08-02 Przemyslowy Instytut Automatyk

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