JPS57108776A - Transmitter of ultrasonic wave - Google Patents
Transmitter of ultrasonic waveInfo
- Publication number
- JPS57108776A JPS57108776A JP18638780A JP18638780A JPS57108776A JP S57108776 A JPS57108776 A JP S57108776A JP 18638780 A JP18638780 A JP 18638780A JP 18638780 A JP18638780 A JP 18638780A JP S57108776 A JPS57108776 A JP S57108776A
- Authority
- JP
- Japan
- Prior art keywords
- pulse
- signal
- ultrasonic
- ultrasonic wave
- circuit
- 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.)
- Pending
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
- G01S7/524—Transmitters
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
PURPOSE:To increase the accuracy for measurement of distance, by differentiating the pulse signal to be applied to an ultrasonic wave transducer and thus obtaining the sharp leading edge and trailing edge of the ultrasonic pulse. CONSTITUTION:The output pulse of a monostable multivibrator 2 which is triggered by the signal given from a start pulse generating circuit 1 is applied to multiplier 4. Thus the burst signals of a series of ultrasonic frequency signals are delivered from a carrier frequency oscillating source 3. On the other hand, the output pulse of a monostable multivibrator 5 which is driven by the terminal of the output pulse of the vibrator 2 is applied to an adder circuit 6. Then a reverse phase signal of 1/4-3/4 wavelength of a frequency is applied to the final pulse of the burst signal sent from the multiplier 4. This signal is differentiated by a differentiating circuit 7 and applied to an ultrasonic wave transducer 9 via a power amplifying circuit 8. Thus both the leading edge and trailing edge of the ultrasonic pulse become sharp to increase the accuracy for the measurement of distance.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18638780A JPS57108776A (en) | 1980-12-26 | 1980-12-26 | Transmitter of ultrasonic wave |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18638780A JPS57108776A (en) | 1980-12-26 | 1980-12-26 | Transmitter of ultrasonic wave |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57108776A true JPS57108776A (en) | 1982-07-06 |
Family
ID=16187494
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18638780A Pending JPS57108776A (en) | 1980-12-26 | 1980-12-26 | Transmitter of ultrasonic wave |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57108776A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013168597A1 (en) * | 2012-05-07 | 2013-11-14 | 株式会社村田製作所 | Ultrasonic sensor drive circuit |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5392118A (en) * | 1977-01-24 | 1978-08-12 | Hitachi Cable Ltd | Method of exciting ultrasonic vibrator |
JPS551503A (en) * | 1978-06-20 | 1980-01-08 | Matsushita Electric Works Ltd | Ultrasonic pulse switch device |
-
1980
- 1980-12-26 JP JP18638780A patent/JPS57108776A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5392118A (en) * | 1977-01-24 | 1978-08-12 | Hitachi Cable Ltd | Method of exciting ultrasonic vibrator |
JPS551503A (en) * | 1978-06-20 | 1980-01-08 | Matsushita Electric Works Ltd | Ultrasonic pulse switch device |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013168597A1 (en) * | 2012-05-07 | 2013-11-14 | 株式会社村田製作所 | Ultrasonic sensor drive circuit |
JPWO2013168597A1 (en) * | 2012-05-07 | 2016-01-07 | 株式会社村田製作所 | Ultrasonic sensor drive circuit |
US10005105B2 (en) | 2012-05-07 | 2018-06-26 | Murata Manufacturing Co., Ltd. | Ultrasonic sensor driving circuit |
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