GB1131538A - An electrical circuit for use in the measurement of acceleration - Google Patents
An electrical circuit for use in the measurement of accelerationInfo
- Publication number
- GB1131538A GB1131538A GB3338267A GB3338267A GB1131538A GB 1131538 A GB1131538 A GB 1131538A GB 3338267 A GB3338267 A GB 3338267A GB 3338267 A GB3338267 A GB 3338267A GB 1131538 A GB1131538 A GB 1131538A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulses
- speed
- flop
- measuring
- flip
- 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
- 230000001133 acceleration Effects 0.000 title 1
- 238000005259 measurement Methods 0.000 title 1
- 230000001419 dependent effect Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/16—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by evaluating the time-derivative of a measured speed signal
- G01P15/165—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by evaluating the time-derivative of a measured speed signal for measuring angular accelerations
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Unknown Time Intervals (AREA)
- Control Of Transmission Device (AREA)
Abstract
1,131,538. Measuring speed. ROLLS - ROYCE Ltd. July 20,1967, No.33382/67. Heading G1N. [Also in Division G4] An arrangement for measuring the time taken for the speed of an engine shaft 10 to change from one value to another comprises means for generating pulses having a frequency dependent on the speed of the shaft, means for measuring the interval between consecutive pulses, means providing a first signal when the first speed has been reached and means for providing a second signal when the second speed has been reached and means measuring the time between these signals. The pulses may be generated by an apertured disc 16 and photo-cell 24 or by a magnetic arrangement. Alternate pulses set and reset flip-flop 40 the output of which is therefore a series of pulses each of which represents by its length the time between a consecutive pair of pulses. The pulses are applied to gate 50 to let 1Mc/s pulses pass to four-decade counter 64. The output of the four-decade stages are applied to number recognisers 82, 88 representing the higher speed and the lower speed respectively. As the shaft accelerates the unit 88 responds at the lower speed and sets flip-flop 96. When the higher speed is reached the unit 82 responds and the flip-flop 96 is reset. Gate 100, opened by the set output of flip-flop 96 passes 1Kc/s pulses to counter 110 which indicates in milliseconds the time taken to accelerate from the lower to the upper speed. Counters 64 and 110, and the digital units 82, 88 may be replaced by analogue circuits Specification 1, 096, 449 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3338267A GB1131538A (en) | 1967-07-20 | 1967-07-20 | An electrical circuit for use in the measurement of acceleration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3338267A GB1131538A (en) | 1967-07-20 | 1967-07-20 | An electrical circuit for use in the measurement of acceleration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1131538A true GB1131538A (en) | 1968-10-23 |
Family
ID=10352216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3338267A Expired GB1131538A (en) | 1967-07-20 | 1967-07-20 | An electrical circuit for use in the measurement of acceleration |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1131538A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2067354A1 (en) * | 1969-11-18 | 1971-08-20 | Snam Progetti | |
| DE3100646A1 (en) * | 1980-01-14 | 1981-12-10 | Nissan Motor Co., Ltd., Yokohama, Kanagawa | "DEVICE AND METHOD FOR DETERMINING A SPEED CHANGE OF A MOVING OBJECT" |
| FR2498255A1 (en) * | 1981-01-21 | 1982-07-23 | Inst Francais Du Petrole | Fast acting ignition advance controller for IC engine - uses vibration transducers to count pre-ignition impulses and compare these with preset count to determine degree of ignition advance |
| FR2511144A1 (en) * | 1981-08-06 | 1983-02-11 | Realisa Equip Indls Secur Et | Brake for crankshaft with high moment of inertia - uses counter to compare actual and demand positions of crankshaft to operate brake valve |
-
1967
- 1967-07-20 GB GB3338267A patent/GB1131538A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2067354A1 (en) * | 1969-11-18 | 1971-08-20 | Snam Progetti | |
| DE3100646A1 (en) * | 1980-01-14 | 1981-12-10 | Nissan Motor Co., Ltd., Yokohama, Kanagawa | "DEVICE AND METHOD FOR DETERMINING A SPEED CHANGE OF A MOVING OBJECT" |
| US4408290A (en) | 1980-01-14 | 1983-10-04 | Nissan Motor Company, Limited | Method and device for determining acceleration and/or deceleration of a moving object |
| FR2498255A1 (en) * | 1981-01-21 | 1982-07-23 | Inst Francais Du Petrole | Fast acting ignition advance controller for IC engine - uses vibration transducers to count pre-ignition impulses and compare these with preset count to determine degree of ignition advance |
| FR2511144A1 (en) * | 1981-08-06 | 1983-02-11 | Realisa Equip Indls Secur Et | Brake for crankshaft with high moment of inertia - uses counter to compare actual and demand positions of crankshaft to operate brake valve |
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