JPS56138262A - Pulse doppler type detecting device for ultrasonic moving body - Google Patents

Pulse doppler type detecting device for ultrasonic moving body

Info

Publication number
JPS56138262A
JPS56138262A JP4233680A JP4233680A JPS56138262A JP S56138262 A JPS56138262 A JP S56138262A JP 4233680 A JP4233680 A JP 4233680A JP 4233680 A JP4233680 A JP 4233680A JP S56138262 A JPS56138262 A JP S56138262A
Authority
JP
Japan
Prior art keywords
output
level
moving body
circuit
gate
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
JP4233680A
Other languages
Japanese (ja)
Other versions
JPS6353514B2 (en
Inventor
Teruhito Nakamura
Hironobu Inoue
Susumu Katayama
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 Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP4233680A priority Critical patent/JPS56138262A/en
Publication of JPS56138262A publication Critical patent/JPS56138262A/en
Publication of JPS6353514B2 publication Critical patent/JPS6353514B2/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
    • 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
    • G01S15/523—Discriminating between fixed and moving objects or between objects moving at different speeds for presence detection

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)
  • Radar Systems Or Details Thereof (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

PURPOSE:To prevent an operation error due to a static body, by processing a signal so that an output of H level and an output of L level can be obtained when there is a moving body in a detection set distance, and when there is a static body only, respectively. CONSTITUTION:When an ultrasonic output is made to oscillate from the oscillator 4, its output passes 5 during the on period of the input gate 3, and it is radiated from the transmitter 7. An ultrasonic wave which has been radiated is reflected by the body, is received by the receiver 8, and an output which passes only the on time of the gate 3 is obtained by the switch 10. On the other hand, the oscillating output which has been controlled by the switch 5 is mixed 11 with the receiving signal, and is detected 12. This detected output is provided to the AND circuit 18 through the band amplifier 13, the level comparator 14 and the integrating circuit 15. Also, the AND 16 output of the distance gate 2 and the input gate 3 is differentiated 17, becomes a signal processing start signal, and is provided to the circuit 18. Accordingly, when there is a moving body within a detection set distance from the circuit 18, and when there is a static body only, an output of H level and an output of L level are obtained, respectively, and they are provided to the FF19.
JP4233680A 1980-03-31 1980-03-31 Pulse doppler type detecting device for ultrasonic moving body Granted JPS56138262A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4233680A JPS56138262A (en) 1980-03-31 1980-03-31 Pulse doppler type detecting device for ultrasonic moving body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4233680A JPS56138262A (en) 1980-03-31 1980-03-31 Pulse doppler type detecting device for ultrasonic moving body

Publications (2)

Publication Number Publication Date
JPS56138262A true JPS56138262A (en) 1981-10-28
JPS6353514B2 JPS6353514B2 (en) 1988-10-24

Family

ID=12633162

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4233680A Granted JPS56138262A (en) 1980-03-31 1980-03-31 Pulse doppler type detecting device for ultrasonic moving body

Country Status (1)

Country Link
JP (1) JPS56138262A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5374900A (en) * 1976-12-15 1978-07-03 Matsushita Electric Works Ltd Ultrasonic alarm
JPS53106599A (en) * 1977-02-28 1978-09-16 Matsushita Electric Works Ltd Ultrasonic alarm device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5374900A (en) * 1976-12-15 1978-07-03 Matsushita Electric Works Ltd Ultrasonic alarm
JPS53106599A (en) * 1977-02-28 1978-09-16 Matsushita Electric Works Ltd Ultrasonic alarm device

Also Published As

Publication number Publication date
JPS6353514B2 (en) 1988-10-24

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