JPS57122372A - Method and apparatus for receiving or transmitting ultrasonic wave - Google Patents
Method and apparatus for receiving or transmitting ultrasonic waveInfo
- Publication number
- JPS57122372A JPS57122372A JP56008385A JP838581A JPS57122372A JP S57122372 A JPS57122372 A JP S57122372A JP 56008385 A JP56008385 A JP 56008385A JP 838581 A JP838581 A JP 838581A JP S57122372 A JPS57122372 A JP S57122372A
- Authority
- JP
- Japan
- Prior art keywords
- received
- circuit
- comparator
- rising
- zero cross
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/523—Details of pulse systems
- G01S7/526—Receivers
- G01S7/527—Extracting wanted echo signals
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Measuring Volume Flow (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
PURPOSE:To avoid disturbance due to bubbles in a propagation path with the correction of waveforms received by adjusting the cycle of a ultrasonic pulse train along the switching of the polarity received when the propagation time is detected with the rising of the zero cross pulse as the arrival of the received wave. CONSTITUTION:Ultrasonic pulses emitted from a transmitter 1 are received by a receiver 2 and input into a peak level comparator 7 by way of an amplifier 6-1, a received polarity switching circuit 13 and an amplifier 6-2. The comparator 7 compares the ultrasonic pulses with a reference level Vp and outputs the results to a rising ratio detection circuit 10 through AGC circuit 8 and a peak position memory circuit 9. The output compared with a reference level Vzs is provided to a zero cross comparator 12 and the arrival of the received wave is determined by the rising of zero cross pulses. Any abnormality of the received wave changes the polarity of the circuit 13 by an abnormality signal and further varies the pulse train cycle of a transmission frequency adjusting circuit 3 of the transmitter 1. This enables the correction received waveforms thereby removing effect of bubbles or the like in a propagation path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56008385A JPS57122372A (en) | 1981-01-22 | 1981-01-22 | Method and apparatus for receiving or transmitting ultrasonic wave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56008385A JPS57122372A (en) | 1981-01-22 | 1981-01-22 | Method and apparatus for receiving or transmitting ultrasonic wave |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57122372A true JPS57122372A (en) | 1982-07-30 |
| JPS6336474B2 JPS6336474B2 (en) | 1988-07-20 |
Family
ID=11691742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56008385A Granted JPS57122372A (en) | 1981-01-22 | 1981-01-22 | Method and apparatus for receiving or transmitting ultrasonic wave |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57122372A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013142574A (en) * | 2012-01-10 | 2013-07-22 | Yokogawa Electric Corp | Ultrasonic flowmeter |
| CN107278264A (en) * | 2016-02-05 | 2017-10-20 | 富士电机株式会社 | Determine device, assay method and program |
| JP2021067571A (en) * | 2019-10-24 | 2021-04-30 | アズビル株式会社 | Failure determination device |
-
1981
- 1981-01-22 JP JP56008385A patent/JPS57122372A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013142574A (en) * | 2012-01-10 | 2013-07-22 | Yokogawa Electric Corp | Ultrasonic flowmeter |
| CN107278264A (en) * | 2016-02-05 | 2017-10-20 | 富士电机株式会社 | Determine device, assay method and program |
| EP3244171A4 (en) * | 2016-02-05 | 2018-03-14 | Fuji Electric Co., Ltd. | Measuring device, measuring method, and program |
| JP2021067571A (en) * | 2019-10-24 | 2021-04-30 | アズビル株式会社 | Failure determination device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6336474B2 (en) | 1988-07-20 |
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