GB1159416A - Improved Magnetic Tachometer - Google Patents

Improved Magnetic Tachometer

Info

Publication number
GB1159416A
GB1159416A GB32925/68A GB3292568A GB1159416A GB 1159416 A GB1159416 A GB 1159416A GB 32925/68 A GB32925/68 A GB 32925/68A GB 3292568 A GB3292568 A GB 3292568A GB 1159416 A GB1159416 A GB 1159416A
Authority
GB
United Kingdom
Prior art keywords
switches
produce
added
attached
average values
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
GB32925/68A
Inventor
John Lionel Feaver
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB32925/68A priority Critical patent/GB1159416A/en
Publication of GB1159416A publication Critical patent/GB1159416A/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
    • G01P3/484—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 contact-making switches

Abstract

1,159,416. Tachogenerators. J. L. FEAVER. July 10, 1968, No. 32925/68. Heading G1N. A tachometer comprises a permanent magnet M Fig. 1 attached to the rotor and a series of reed switches R1, &c. attached to the stator to be operated sequentially by the magnet M, the switches being connected in parallel and associated with a monostable multi-vibrator to produce a pulse train whose frequency is determined in an averaging circuit. In one embodiment the switches are connected in say three groups, R1 R4, R7 &c. ; R2, R5, R8 etc.; R3, R6, R9 &c. to produce three pulse trains whose average values are added. In another embodiment Fig. 3, (not shown), alternate switches are electromagnetically polarized in opposite directions and two oppositely poled permanent magnets are used to produce two pulse trains whose average values are added.
GB32925/68A 1968-07-10 1968-07-10 Improved Magnetic Tachometer Expired GB1159416A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB32925/68A GB1159416A (en) 1968-07-10 1968-07-10 Improved Magnetic Tachometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB32925/68A GB1159416A (en) 1968-07-10 1968-07-10 Improved Magnetic Tachometer

Publications (1)

Publication Number Publication Date
GB1159416A true GB1159416A (en) 1969-07-23

Family

ID=10346035

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32925/68A Expired GB1159416A (en) 1968-07-10 1968-07-10 Improved Magnetic Tachometer

Country Status (1)

Country Link
GB (1) GB1159416A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3719887A (en) * 1969-03-13 1973-03-06 Tokai Rika Co Ltd Device for detecting the rotation of wheels
FR2163085A5 (en) * 1971-11-25 1973-07-20 Int Computers Ltd
FR2332535A1 (en) * 1975-11-19 1977-06-17 Dana Corp DEVICE INTENDED TO GENERATE AN EXIT SIGNAL REPRESENTING THE SPEED OF A VEHICLE
DE4438880A1 (en) * 1994-10-31 1996-05-02 Elobau Elektrobauelemente Gmbh Rotation angle sensor with housing and rotating body forming electric coupling

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3719887A (en) * 1969-03-13 1973-03-06 Tokai Rika Co Ltd Device for detecting the rotation of wheels
FR2163085A5 (en) * 1971-11-25 1973-07-20 Int Computers Ltd
FR2332535A1 (en) * 1975-11-19 1977-06-17 Dana Corp DEVICE INTENDED TO GENERATE AN EXIT SIGNAL REPRESENTING THE SPEED OF A VEHICLE
DE4438880A1 (en) * 1994-10-31 1996-05-02 Elobau Elektrobauelemente Gmbh Rotation angle sensor with housing and rotating body forming electric coupling

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees