GB787933A - Improved device for measuring the speed of a body - Google Patents
Improved device for measuring the speed of a bodyInfo
- 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
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.
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)
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)
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)
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 |
-
0
- NL NL96275D patent/NL96275C/xx active
-
1955
- 1955-10-26 CH CH326602D patent/CH326602A/en unknown
- 1955-11-02 GB GB31372/55A patent/GB787933A/en not_active Expired
- 1955-11-03 FR FR1134634D patent/FR1134634A/en not_active Expired
- 1955-11-03 DE DEC12038A patent/DE1008937B/en active Pending
Cited By (1)
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 |
---|---|
FR1134634A (en) | 1957-04-15 |
NL96275C (en) | 1900-01-01 |
DE1008937B (en) | 1957-05-23 |
CH326602A (en) | 1957-12-31 |
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