JPS57108776A - Transmitter of ultrasonic wave - Google Patents

Transmitter of ultrasonic wave

Info

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
Application number
JP18638780A
Other languages
Japanese (ja)
Inventor
Akira Tokushima
Ryoichi Takayama
Ichiro Yamashita
Yukihiko Ise
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP18638780A priority Critical patent/JPS57108776A/en
Publication of JPS57108776A publication Critical patent/JPS57108776A/en
Pending legal-status Critical Current

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.
JP18638780A 1980-12-26 1980-12-26 Transmitter of ultrasonic wave Pending JPS57108776A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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