JPS5465568A - Ultrasonic system object detector - Google Patents

Ultrasonic system object detector

Info

Publication number
JPS5465568A
JPS5465568A JP13188377A JP13188377A JPS5465568A JP S5465568 A JPS5465568 A JP S5465568A JP 13188377 A JP13188377 A JP 13188377A JP 13188377 A JP13188377 A JP 13188377A JP S5465568 A JPS5465568 A JP S5465568A
Authority
JP
Japan
Prior art keywords
transmission
charge
reverberation
output
preamplifier
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
Application number
JP13188377A
Other languages
Japanese (ja)
Other versions
JPS6113187B2 (en
Inventor
Masao Mizuno
Hiroshi Numata
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.)
Omron Corp
Original Assignee
Omron Tateisi Electronics Co
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 Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Priority to JP13188377A priority Critical patent/JPS5465568A/en
Publication of JPS5465568A publication Critical patent/JPS5465568A/en
Publication of JPS6113187B2 publication Critical patent/JPS6113187B2/ja
Granted 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
    • G01S7/527—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)
  • Traffic Control Systems (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

PURPOSE:To obviate the production of receiving signal despite receiving of reverberation and generate reflected wave receiving signal when reflected wave is received while the reverberation exists by providing a charge and discharge circuit whieh is charged by the output of a preamplifier only at the transmission of ultrasonic waves. CONSTITUTION:A variable amplifier 3 is connected between a preamplifier 2 which amplifies the output of an ultrasonic wave transmitting-receiving head 1 and a rectifying and smoothing circuit 4, and a charge and dicharge circuit 6 which is charged only at the transmission of ultrasonic waves and keeps discharging thereafter is connected to the preamplifier 2. The output voltage of the charge and discharge circuit 6 is highest at the ultrasonic wave transmission and keeps decreasing from the time when transmission ends. If the amplification factor of a variable amplifier 3 is so controlled as to be inversely proportional to the output voltage level of the charge and discharge circuit 6, the amplification factor assumes a minimum value close to zero at the transmission, thus decreasing the amplification factor in the period where the reverberation exists. On the other hand, when the reflected waves from the object arrive within the reverberation period, the signal which have received the reflected wave by a certain degree of output may be obtained.
JP13188377A 1977-11-02 1977-11-02 Ultrasonic system object detector Granted JPS5465568A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13188377A JPS5465568A (en) 1977-11-02 1977-11-02 Ultrasonic system object detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13188377A JPS5465568A (en) 1977-11-02 1977-11-02 Ultrasonic system object detector

Publications (2)

Publication Number Publication Date
JPS5465568A true JPS5465568A (en) 1979-05-26
JPS6113187B2 JPS6113187B2 (en) 1986-04-11

Family

ID=15068365

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13188377A Granted JPS5465568A (en) 1977-11-02 1977-11-02 Ultrasonic system object detector

Country Status (1)

Country Link
JP (1) JPS5465568A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5822979A (en) * 1981-08-05 1983-02-10 Marine Instr Co Ltd Receiveng method of scanning sonar
JPS5925489U (en) * 1982-08-10 1984-02-17 サンデン株式会社 Ultrasonic receiving circuit
JPS60231190A (en) * 1984-05-01 1985-11-16 Koden Electronics Co Ltd Echo detector
JP2012500965A (en) * 2008-06-16 2012-01-12 キネテイツク・リミテツド Phase-based detection

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5822979A (en) * 1981-08-05 1983-02-10 Marine Instr Co Ltd Receiveng method of scanning sonar
JPS6342756B2 (en) * 1981-08-05 1988-08-25 Kaijo Denki Kk
JPS5925489U (en) * 1982-08-10 1984-02-17 サンデン株式会社 Ultrasonic receiving circuit
JPS60231190A (en) * 1984-05-01 1985-11-16 Koden Electronics Co Ltd Echo detector
JPH0316628B2 (en) * 1984-05-01 1991-03-06 Koden Electronics Co Ltd
JP2012500965A (en) * 2008-06-16 2012-01-12 キネテイツク・リミテツド Phase-based detection

Also Published As

Publication number Publication date
JPS6113187B2 (en) 1986-04-11

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