JPS54665A - Detecting method and system of ultrasonic signals - Google Patents

Detecting method and system of ultrasonic signals

Info

Publication number
JPS54665A
JPS54665A JP6469477A JP6469477A JPS54665A JP S54665 A JPS54665 A JP S54665A JP 6469477 A JP6469477 A JP 6469477A JP 6469477 A JP6469477 A JP 6469477A JP S54665 A JPS54665 A JP S54665A
Authority
JP
Japan
Prior art keywords
detecting method
ultrasonic signals
relably
maintained
make
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
JP6469477A
Other languages
Japanese (ja)
Inventor
Tetsuo Washimi
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP6469477A priority Critical patent/JPS54665A/en
Publication of JPS54665A publication Critical patent/JPS54665A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measuring Volume Flow (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

PURPOSE:To make it possible to relably detect ultrasonic waves by accomplishing automatic gain control such that the peak value for signal detection is maintained within a preset range.
JP6469477A 1977-06-03 1977-06-03 Detecting method and system of ultrasonic signals Pending JPS54665A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6469477A JPS54665A (en) 1977-06-03 1977-06-03 Detecting method and system of ultrasonic signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6469477A JPS54665A (en) 1977-06-03 1977-06-03 Detecting method and system of ultrasonic signals

Publications (1)

Publication Number Publication Date
JPS54665A true JPS54665A (en) 1979-01-06

Family

ID=13265500

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6469477A Pending JPS54665A (en) 1977-06-03 1977-06-03 Detecting method and system of ultrasonic signals

Country Status (1)

Country Link
JP (1) JPS54665A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60183528A (en) * 1984-03-01 1985-09-19 Tokyo Electric Power Co Inc:The Detecting method of timing of impulse wave

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60183528A (en) * 1984-03-01 1985-09-19 Tokyo Electric Power Co Inc:The Detecting method of timing of impulse wave

Similar Documents

Publication Publication Date Title
ES481922A1 (en) Measurement of distance using ultrasonic signals
JPS5651607A (en) Method of and apparatus for detecting irregularities of the tire side wall
JPS53140079A (en) Automatic recognizing system for moving sound source
JPS5478190A (en) Detecting method of defect of rice grains
JPS54665A (en) Detecting method and system of ultrasonic signals
JPS5244588A (en) Disturbance detection system
JPS5443012A (en) Amplitude envelope detector of signal waves
JPS5418788A (en) Method and apparatus for detecting of ultrasonic wave signals
JPS5443700A (en) Vehicle detector using ultrasonic wave
EG13408A (en) Method for acoustic signal detection
FR2405609A1 (en) Volume control system for public address network - uses detected level of output sound to control amplification of broadcast
JPS53130066A (en) Vehicle position detecting system
JPS52136546A (en) Automatic power control system
JPS5441783A (en) Method and apparatus for detection of ultrasonic wave receiving signals
JPS5437777A (en) Device of discriminating generating condition of zero signal for detecting starting point signal
JPS546594A (en) Numerical value controlling ultrasonic flaw detecting system
JPS5277628A (en) Automatic direction adjustment system
JPS53124401A (en) Control signal detection system for discrimination of presence or not of angle modulated wave signals
JPS5413309A (en) Circuit for detecting existence of sound signals
JPS5719654A (en) Crack sound signal measuring device
JPS53127990A (en) Travelling body controller
JPS5242791A (en) Method of controlling driving of ultrasonic flaw detection
JPS5439658A (en) Device of discriminating generating condition of zero signal for detecting starting point signal
EP0219339A3 (en) Acoustic direction finder for use as an active range finder
JPS54141177A (en) Earthquake monitor system

Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees