JPS5539057A - Moving body detector using ultrasonic wave - Google Patents

Moving body detector using ultrasonic wave

Info

Publication number
JPS5539057A
JPS5539057A JP11295378A JP11295378A JPS5539057A JP S5539057 A JPS5539057 A JP S5539057A JP 11295378 A JP11295378 A JP 11295378A JP 11295378 A JP11295378 A JP 11295378A JP S5539057 A JPS5539057 A JP S5539057A
Authority
JP
Japan
Prior art keywords
signals
frequency
signal line
frequencies
transmitter
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
JP11295378A
Other languages
Japanese (ja)
Inventor
Masakatsu Matsuzaki
Masao Mizuno
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 JP11295378A priority Critical patent/JPS5539057A/en
Publication of JPS5539057A publication Critical patent/JPS5539057A/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
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/50—Systems of measurement, based on relative movement of the target
    • G01S15/52—Discriminating between fixed and moving objects or between objects moving at different speeds

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

PURPOSE:To make it possible to shorten the transmission period and to detect the received signals in a separate manner by alternately driving a plurality of transmitter-receivers using an oscillator in different frequencies through a common signal line. CONSTITUTION:A moving body detector is composed of: transmitter-receivers 20 and 21, which have their corresponding signal terminals connected through common signal lines and which are equipped with oscillators; oscillatory circuits 38 and 39 for generating frequencies f1 and f2; a transmission control circuit 40 for alternately feeding the signals of the frequencies f1 and f2 to the common signal line thereby to drive the transmitter-receiver 20 or 21; and a received wave selecting circuit 58 for selecting either the component of the frequency f1 of the receives signals, after the signals of the frequency f1 are fed to the signal line, or the component of the frequency f2 of the received signals after the signals of the frequency f2 are fed to the signal line. The reverberation signals of the oscillators are detected at 30 so that the frequencies f1 and f2 are adjusted.
JP11295378A 1978-09-14 1978-09-14 Moving body detector using ultrasonic wave Pending JPS5539057A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11295378A JPS5539057A (en) 1978-09-14 1978-09-14 Moving body detector using ultrasonic wave

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11295378A JPS5539057A (en) 1978-09-14 1978-09-14 Moving body detector using ultrasonic wave

Publications (1)

Publication Number Publication Date
JPS5539057A true JPS5539057A (en) 1980-03-18

Family

ID=14599654

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11295378A Pending JPS5539057A (en) 1978-09-14 1978-09-14 Moving body detector using ultrasonic wave

Country Status (1)

Country Link
JP (1) JPS5539057A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57191580A (en) * 1981-05-20 1982-11-25 Omron Tateisi Electronics Co Two-frequency type ultrasonic vehicle detector
JPS58154682A (en) * 1982-03-09 1983-09-14 Mitsubishi Electric Corp Detector of substance
JPS62159078A (en) * 1985-12-27 1987-07-15 株式会社クボタ Control system of member following up moving body and automatic milking device and automatic milking method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57191580A (en) * 1981-05-20 1982-11-25 Omron Tateisi Electronics Co Two-frequency type ultrasonic vehicle detector
JPS58154682A (en) * 1982-03-09 1983-09-14 Mitsubishi Electric Corp Detector of substance
JPS62159078A (en) * 1985-12-27 1987-07-15 株式会社クボタ Control system of member following up moving body and automatic milking device and automatic milking method

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