GB833712A - Improvements in or relating to systems for detecting relative movements using ferro-resonant systems - Google Patents

Improvements in or relating to systems for detecting relative movements using ferro-resonant systems

Info

Publication number
GB833712A
GB833712A GB897957A GB897957A GB833712A GB 833712 A GB833712 A GB 833712A GB 897957 A GB897957 A GB 897957A GB 897957 A GB897957 A GB 897957A GB 833712 A GB833712 A GB 833712A
Authority
GB
United Kingdom
Prior art keywords
series
capacitor
voltage
rotation
systems
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
GB897957A
Inventor
Kenneth Frank Bacon
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.)
Philips Components Ltd
Original Assignee
Mullard 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 Mullard Ltd filed Critical Mullard Ltd
Priority to GB897957A priority Critical patent/GB833712A/en
Priority to US727619A priority patent/US2948852A/en
Publication of GB833712A publication Critical patent/GB833712A/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
    • G01P3/487—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 rotating magnets
    • 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
    • G01D5/14—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 the magnitude of a current or voltage
    • G01D5/20—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 the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
    • G01D5/2006—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 the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils
    • G01D5/2033—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 the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils controlling the saturation of a magnetic circuit by means of a movable element, e.g. a magnet
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P13/00—Indicating or recording presence, absence, or direction, of movement
    • G01P13/02—Indicating direction only, e.g. by weather vane
    • G01P13/04—Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement
    • G01P13/045—Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement with speed indication
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/19—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using non-linear reactive devices in resonant circuits
    • G11C11/20—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using non-linear reactive devices in resonant circuits using parametrons

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

833,712. Electric measuring systems. MULLARD Ltd. Feb. 11, 1958 [March 19, 1957], No. 8979/57. Class 40 (1). [Also in Group XXXIX] Apparatus for determining the speed and direction of rotation of a wheel 2 (Fig. 2) comprises a series of equally spaced permanent magnets 4-7 located on the periphery and two fixed coils L1, L2 wound on magnetic cores whose permeability decreases with an increase in flux, each coil L1, L2 being connected in series with a capacitor C1, C2 (Fig. 3) to form the two parallel branches of a ferro-resonant flip-flop, fed from an A.C. source via a limiting capacitor C3. As each permanent magnet passes the coils the additional flux causes coil L2 to resonate with its series capacitor C2, so that the voltage across C2 rises from a static value, whilst the voltage across capacitor C1 falls in a corresponding manner. These voltages are rectified and compared with a reference voltage applied at B, equal to the static values of the voltage across C1, C2, so that there is no output at terminal X, and a series of pulses at terminal Y whose rate is indicative of the speed of rotation of wheel 2. Rotation in the opposite direction produces pulses at X instead ofY.
GB897957A 1957-03-19 1957-03-19 Improvements in or relating to systems for detecting relative movements using ferro-resonant systems Expired GB833712A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB897957A GB833712A (en) 1957-03-19 1957-03-19 Improvements in or relating to systems for detecting relative movements using ferro-resonant systems
US727619A US2948852A (en) 1957-03-19 1958-04-10 Systems for detecting relative movements using ferro-resonant systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB897957A GB833712A (en) 1957-03-19 1957-03-19 Improvements in or relating to systems for detecting relative movements using ferro-resonant systems

Publications (1)

Publication Number Publication Date
GB833712A true GB833712A (en) 1960-04-27

Family

ID=9863009

Family Applications (1)

Application Number Title Priority Date Filing Date
GB897957A Expired GB833712A (en) 1957-03-19 1957-03-19 Improvements in or relating to systems for detecting relative movements using ferro-resonant systems

Country Status (1)

Country Link
GB (1) GB833712A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111684288A (en) * 2018-02-09 2020-09-18 克诺尔商用车制动系统有限公司 Method and device for determining speed by means of inductive speed sensor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111684288A (en) * 2018-02-09 2020-09-18 克诺尔商用车制动系统有限公司 Method and device for determining speed by means of inductive speed sensor
CN111684288B (en) * 2018-02-09 2022-03-29 克诺尔商用车制动系统有限公司 Method and device for determining speed by means of inductive speed sensor

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