JPS56154668A - Velocity of flow measuring device - Google Patents
Velocity of flow measuring deviceInfo
- Publication number
- JPS56154668A JPS56154668A JP5918980A JP5918980A JPS56154668A JP S56154668 A JPS56154668 A JP S56154668A JP 5918980 A JP5918980 A JP 5918980A JP 5918980 A JP5918980 A JP 5918980A JP S56154668 A JPS56154668 A JP S56154668A
- Authority
- JP
- Japan
- Prior art keywords
- phase
- voltage
- circuit
- deviation angle
- signals
- 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.)
- Granted
Links
- 230000001360 synchronised effect Effects 0.000 abstract 3
- 230000010355 oscillation 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
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/01—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by using swirlflowmeter
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Abstract
PURPOSE:To stabilize operation by a method wherein the current meter of the system demodulating the phase modulation signals of supersonic waves caused by Ka rma n whirl the initial set value of the voltage control phase deviation circuit is initially set on the optimum value through the reset circuit. CONSTITUTION:The supersonic waves phase modulated by Ka rma n whirl become one imput V5 of the phase comparator 6. The voltage control phase deviation circuit 8 generates the signals V4, wherein the phase deviation angle from the oscillation signals V1 is controlled according to the output voltage V7 of the loop filter 7, becomes the other of the comparator 6 constituting the phase synchronous loop. The phase synchronous point of said loops are existing in plurality each 2pi. The transistor 51 constitutes a reset circuit turning ''ON'' immediately after the power source Vcc is made and V7 is equal to + input voltage of 13. When said reference voltage is set at the set voltage value corresponding to the center of the minimum deviation angle and the maximum deviation angle of the circuit 8, even at the time of making as well as of building-up of the power source Vcc the voltage V7 shift to the voltage corresponding to the nearest synchronous deviation angle to quickly synchronize in phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5918980A JPS56154668A (en) | 1980-04-30 | 1980-04-30 | Velocity of flow measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5918980A JPS56154668A (en) | 1980-04-30 | 1980-04-30 | Velocity of flow measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56154668A true JPS56154668A (en) | 1981-11-30 |
| JPS6125288B2 JPS6125288B2 (en) | 1986-06-14 |
Family
ID=13106208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5918980A Granted JPS56154668A (en) | 1980-04-30 | 1980-04-30 | Velocity of flow measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56154668A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59133430A (en) * | 1983-01-21 | 1984-07-31 | Oval Eng Co Ltd | Ultrasonic vortex street flowmeter |
| US4838078A (en) * | 1986-07-17 | 1989-06-13 | Mitsubishi Denki Kabushiki Kaisha | Suction air amount measuring device for an engine |
-
1980
- 1980-04-30 JP JP5918980A patent/JPS56154668A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59133430A (en) * | 1983-01-21 | 1984-07-31 | Oval Eng Co Ltd | Ultrasonic vortex street flowmeter |
| US4838078A (en) * | 1986-07-17 | 1989-06-13 | Mitsubishi Denki Kabushiki Kaisha | Suction air amount measuring device for an engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6125288B2 (en) | 1986-06-14 |
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