GB985911A - Electrical apparatus for providing an indication of displacement - Google Patents

Electrical apparatus for providing an indication of displacement

Info

Publication number
GB985911A
GB985911A GB1874160A GB1874160A GB985911A GB 985911 A GB985911 A GB 985911A GB 1874160 A GB1874160 A GB 1874160A GB 1874160 A GB1874160 A GB 1874160A GB 985911 A GB985911 A GB 985911A
Authority
GB
United Kingdom
Prior art keywords
digitiser
fine
coarse
brushes
lead
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
GB1874160A
Inventor
Richard Herbert Booth
Eric John Gargini
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical 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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB1874160A priority Critical patent/GB985911A/en
Publication of GB985911A publication Critical patent/GB985911A/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
    • G01D5/12—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
    • G01D5/204—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 mutual induction between two or more coils
    • G01D5/2066—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 mutual induction between two or more coils by movement of a single coil with respect to a single other coil

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electrophonic Musical Instruments (AREA)

Abstract

985, 911. Electric selective signalling systems. ELECTRIC & MUSICAL INDUSTRIES Ltd. May 29, 1961 [May 27, 1960], No. 18741/60. Heading G4H. A system for indicating the relative displacement of two members by using independent "coarse" and "fine" digitisers is characterized in that an electrical coupling between the two digitisers is provided to prevent errors which might otherwise occur at relative displacements at which "carry" should occur from the fine to the coarse digitiser. As described the fine digitiser comprises an inductosyn, Fig. 1, having a fixed winding A and a movable pick-up winding BC which produces a signal phase-displaced with respect to a reference signal, which phasedisplacement is digitised, in known manner, by gating relatively high frequency clock-pulses to a counter, and the coarse digitiser comprises an array of conductive segments 0, 1, 2, 3, 4 &c., Fig. 1, and two brushes K, L, Fig. 2. The brushes K, L, when displaced, sequentially apply potentials to the outputs leads of the conductive segments. This, as shown, will, for some positions of the brushes, cause two of the segments to raised in potential simultaneously, and the particular segment that is to provide the final output is selected by an array of gates controlled by signals on two leads M, N from the fine digitiser, it being arranged that a potential is applied to lead N when the fine digitiser is in a position corresponding to the bottom half of an increment of the coarse digitiser and that lead M is marked when lead N is not marked.
GB1874160A 1960-05-27 1960-05-27 Electrical apparatus for providing an indication of displacement Expired GB985911A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1874160A GB985911A (en) 1960-05-27 1960-05-27 Electrical apparatus for providing an indication of displacement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1874160A GB985911A (en) 1960-05-27 1960-05-27 Electrical apparatus for providing an indication of displacement

Publications (1)

Publication Number Publication Date
GB985911A true GB985911A (en) 1965-03-10

Family

ID=10117603

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1874160A Expired GB985911A (en) 1960-05-27 1960-05-27 Electrical apparatus for providing an indication of displacement

Country Status (1)

Country Link
GB (1) GB985911A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4366705A (en) * 1979-12-05 1983-01-04 Aisin-Warner K.K. Throttle opening detector for internal combustion engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4366705A (en) * 1979-12-05 1983-01-04 Aisin-Warner K.K. Throttle opening detector for internal combustion engine

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