JPS57100362A - Ultrasonic wave measuring device - Google Patents

Ultrasonic wave measuring device

Info

Publication number
JPS57100362A
JPS57100362A JP55177553A JP17755380A JPS57100362A JP S57100362 A JPS57100362 A JP S57100362A JP 55177553 A JP55177553 A JP 55177553A JP 17755380 A JP17755380 A JP 17755380A JP S57100362 A JPS57100362 A JP S57100362A
Authority
JP
Japan
Prior art keywords
amplifier
output
time
result
measurement
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
JP55177553A
Other languages
Japanese (ja)
Inventor
Tsutomu Hondo
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.)
Yokogawa Electric Corp
Original Assignee
Hokushin Electric Works Ltd
Yokogawa Hokushin Electric Corp
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 Hokushin Electric Works Ltd, Yokogawa Hokushin Electric Corp filed Critical Hokushin Electric Works Ltd
Priority to JP55177553A priority Critical patent/JPS57100362A/en
Publication of JPS57100362A publication Critical patent/JPS57100362A/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
    • G01S7/526—Receivers
    • G01S7/529—Gain of receiver varied automatically during pulse-recurrence period

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 Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

PURPOSE:To eliminate the effect of a noise signal, by measuring the time when the output level of an amplifier that amplifies a received signal becomes higher than the reference level and then detecting a normal ultrasonic signal to be received based on the result of the above-mentioned measurement of time. CONSTITUTION:An ultrasonic signal received by a wave transmitting/receiving device 4 is supplied to a variable gain amplifier 8 via a switching circuit 3. A comparator 10 compares the output of the amplifier 8 with the reference level, and delivers the output to an arithmetic control circuit 15 in case the output of the amplifier 8 is higher than the reference level. The circuit 15 measures the time when the output of the comparator 10 is set at H level and detects a normal ultrasonic signal to be received based on the result of the measurement of time. A the same time, the gain of the amplifier 8 is controlled from the result of the above-mentioned result of measurement.
JP55177553A 1980-12-16 1980-12-16 Ultrasonic wave measuring device Pending JPS57100362A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55177553A JPS57100362A (en) 1980-12-16 1980-12-16 Ultrasonic wave measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55177553A JPS57100362A (en) 1980-12-16 1980-12-16 Ultrasonic wave measuring device

Publications (1)

Publication Number Publication Date
JPS57100362A true JPS57100362A (en) 1982-06-22

Family

ID=16032960

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55177553A Pending JPS57100362A (en) 1980-12-16 1980-12-16 Ultrasonic wave measuring device

Country Status (1)

Country Link
JP (1) JPS57100362A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61243384A (en) * 1985-04-19 1986-10-29 Daihatsu Motor Co Ltd Alarm system for ultrasonic sonar
JPH0371078A (en) * 1989-08-11 1991-03-26 Nec Corp Target echo detecting device for sonar device
JPH0499741U (en) * 1991-01-30 1992-08-28

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4859860A (en) * 1971-11-24 1973-08-22
JPS5111790B1 (en) * 1971-07-07 1976-04-14
JPS5164316A (en) * 1974-12-02 1976-06-03 Victor Company Of Japan Shoyono parusuhabao jusuru parusuno sentakukairo
JPS52149099A (en) * 1976-06-04 1977-12-10 Omron Tateisi Electronics Co Automatic sensing range correcting system of ultrasonic sensors

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5111790B1 (en) * 1971-07-07 1976-04-14
JPS4859860A (en) * 1971-11-24 1973-08-22
JPS5164316A (en) * 1974-12-02 1976-06-03 Victor Company Of Japan Shoyono parusuhabao jusuru parusuno sentakukairo
JPS52149099A (en) * 1976-06-04 1977-12-10 Omron Tateisi Electronics Co Automatic sensing range correcting system of ultrasonic sensors

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61243384A (en) * 1985-04-19 1986-10-29 Daihatsu Motor Co Ltd Alarm system for ultrasonic sonar
JPH0371078A (en) * 1989-08-11 1991-03-26 Nec Corp Target echo detecting device for sonar device
JPH0499741U (en) * 1991-01-30 1992-08-28

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