GB787933A - Improved device for measuring the speed of a body - Google Patents

Improved device for measuring the speed of a body

Info

Publication number
GB787933A
GB787933A GB31372/55A GB3137255A GB787933A GB 787933 A GB787933 A GB 787933A GB 31372/55 A GB31372/55 A GB 31372/55A GB 3137255 A GB3137255 A GB 3137255A GB 787933 A GB787933 A GB 787933A
Authority
GB
United Kingdom
Prior art keywords
plates
speed
quadrant
pair
shaped
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
GB31372/55A
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.)
COMITE ELECTROTECHNIQUE BELGE
Original Assignee
COMITE ELECTROTECHNIQUE BELGE
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 COMITE ELECTROTECHNIQUE BELGE filed Critical COMITE ELECTROTECHNIQUE BELGE
Publication of GB787933A publication Critical patent/GB787933A/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
    • G01P3/483—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 variable capacitance detectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

787,933. Measuring speed. COMITE ELECTROTECHNIQUE BELGE. Nov. 2,1955 [June 11, 1954], No. 31372/55. Class 40 (1). In order to measure the speed of a moving body 4, the latter is mechanically connected to the movable part of a capacitive transducer 2, the capacitance of which varies linearly with displacement of the moving body, in series with a resistor 5 across a D.C. source. The voltage across the resistor corresponds to the instantaneous value of the speed and is amplified at 7 and indicated on a cathode-ray tube 8 and voltmeter 9. Construction of transducers. In one arrangement, Figs. 2 and 3 (not shown) the transducer comprises two sets of diametrically opposed quadrant shaped fixed plates and a corresponding set of movable plates on a rotary shaft. In a modification, Figs. 7 and 8 (not shown), the same arrangement is provided with the further sets of fixed plates connected to ground and acting as a guard electrode. As shown in Fig. 4, the plates may be of cylindrical shape where the movement being investigated is rectilinear. In another form, Figs. 9 and 10, for rotary motion in which the stator consists of a pair of oppositely disposed quadrant-shaped capacitor plates 6 separated by a similar pair of guard plates 18 and the rotor comprises a pair of quadrant-shaped plates, all the plates are furnished with flangelike projections 19, 21, 22.
GB31372/55A 1954-11-04 1955-11-02 Improved device for measuring the speed of a body Expired GB787933A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE326602X 1954-11-04

Publications (1)

Publication Number Publication Date
GB787933A true GB787933A (en) 1957-12-18

Family

ID=3867795

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31372/55A Expired GB787933A (en) 1954-11-04 1955-11-02 Improved device for measuring the speed of a body

Country Status (5)

Country Link
CH (1) CH326602A (en)
DE (1) DE1008937B (en)
FR (1) FR1134634A (en)
GB (1) GB787933A (en)
NL (1) NL96275C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3384816A (en) * 1962-02-13 1968-05-21 North American Rockwell Angular measurement device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1210217B (en) * 1962-09-29 1966-02-03 Presna Mechanika Narodni Podni Cylindrical capacitive speed sensor
US3377556A (en) * 1967-01-30 1968-04-09 Beckman & Whitley Inc Shaft speed detector with variable capacitive coupling between the shaft and an electrical signal generator
AT376302B (en) * 1980-01-22 1984-11-12 Philips Nv CYLINDRICAL CAPACITIVE TACHOGENERATOR

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE672203C (en) * 1935-07-25 1939-02-22 Siemens & Halske Akt Ges Arrangement for making changes in position of such parts perceptible (such as shafts subject to rotation) which are exposed to fast changes in position in addition to a shift that changes only slowly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3384816A (en) * 1962-02-13 1968-05-21 North American Rockwell Angular measurement device

Also Published As

Publication number Publication date
CH326602A (en) 1957-12-31
FR1134634A (en) 1957-04-15
DE1008937B (en) 1957-05-23
NL96275C (en) 1900-01-01

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