GB961244A - Improvements in and relating to revolution counting apparatus - Google Patents

Improvements in and relating to revolution counting apparatus

Info

Publication number
GB961244A
GB961244A GB2149562A GB2149562A GB961244A GB 961244 A GB961244 A GB 961244A GB 2149562 A GB2149562 A GB 2149562A GB 2149562 A GB2149562 A GB 2149562A GB 961244 A GB961244 A GB 961244A
Authority
GB
United Kingdom
Prior art keywords
diode
predetermined voltage
circuit includes
counter ctr
mileage
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
GB2149562A
Inventor
David Richard Dalton
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries Ltd
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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB2149562A priority Critical patent/GB961244A/en
Publication of GB961244A publication Critical patent/GB961244A/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
    • G01P3/4802—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
    • G01P3/4805—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 by using circuits for the electrical integration of the generated pulses

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Distances Traversed On The Ground (AREA)

Abstract

961,244. Odometers. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. May 31, 1963 [June 4, 1962], No. 21495/62. Heading G1K. Apparatus for indicating aggregate revolutions of a vehicle wheel to indicate a long mileage travelled comprises a tacho-generator supplying current to an integrating and pulse forming circuit and a counter CTR. The circuit includes a step-up transformer TR whose secondary winding charges a capacitor C1 through a rectifier, such as a diode D1, a fixed resistor and a variable resistor R2. The discharg circuit includes a device D2, such as a silicone diode of four layer PNPN type, which becomes conducting at a predetermined voltage, sufficient to operate the counter CTR. Since the diode D2 operates only when a predetermined voltage is obtained, mileage below a certain speed is not registered, but may be compensated for by counting faster at above that speed if the proposition above and below can be estimated. Compensation may also be made for tyre wear.
GB2149562A 1962-06-04 1962-06-04 Improvements in and relating to revolution counting apparatus Expired GB961244A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2149562A GB961244A (en) 1962-06-04 1962-06-04 Improvements in and relating to revolution counting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2149562A GB961244A (en) 1962-06-04 1962-06-04 Improvements in and relating to revolution counting apparatus

Publications (1)

Publication Number Publication Date
GB961244A true GB961244A (en) 1964-06-17

Family

ID=10163907

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2149562A Expired GB961244A (en) 1962-06-04 1962-06-04 Improvements in and relating to revolution counting apparatus

Country Status (1)

Country Link
GB (1) GB961244A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3358230A (en) * 1965-03-05 1967-12-12 Motorola Inc Electronic device
US3396333A (en) * 1964-04-13 1968-08-06 Smith & Sons Ltd S Odometer system for vehicles employing a frequency divider
US3477022A (en) * 1967-05-16 1969-11-04 Gen Motors Corp Electronic speedometer and odometer control circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3396333A (en) * 1964-04-13 1968-08-06 Smith & Sons Ltd S Odometer system for vehicles employing a frequency divider
US3358230A (en) * 1965-03-05 1967-12-12 Motorola Inc Electronic device
US3477022A (en) * 1967-05-16 1969-11-04 Gen Motors Corp Electronic speedometer and odometer control circuit

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