JPS57175448A - Rear obstacle indicator system for car - Google Patents

Rear obstacle indicator system for car

Info

Publication number
JPS57175448A
JPS57175448A JP56061695A JP6169581A JPS57175448A JP S57175448 A JPS57175448 A JP S57175448A JP 56061695 A JP56061695 A JP 56061695A JP 6169581 A JP6169581 A JP 6169581A JP S57175448 A JPS57175448 A JP S57175448A
Authority
JP
Japan
Prior art keywords
distance
car
obstacle
signal
microcomputer
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
JP56061695A
Other languages
Japanese (ja)
Inventor
Tadashi Tsuda
Seiichirou Hiramatsu
Takeshi Maeno
Mitsugi Otsuka
Yoji Ito
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.)
Denso Corp
Original Assignee
NipponDenso Co 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 NipponDenso Co Ltd filed Critical NipponDenso Co Ltd
Priority to JP56061695A priority Critical patent/JPS57175448A/en
Publication of JPS57175448A publication Critical patent/JPS57175448A/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
    • G01S15/88—Sonar systems specially adapted for specific applications
    • G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
    • G01S15/931—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles

Landscapes

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

Abstract

PURPOSE:To improve safety by changing, in phased indication of a rear obstacle, relation between each boundary distance and a detected distance to a rear obstacle by a predetermined distance and indicating a distance shorter to a car than the detected distance by the predetermined distance. CONSTITUTION:An engine rotational frequency signal from an engine rotation sensor 6, back signal from a back switch 1 and a distance signal for advance and retreat of a car from a distance sensor 7 are respectively inputted to a microcomputer 8. The microcomputer 8 transmits a carrier wave from an ultrasonic wave transmitter 3 through a transmitting circuit 2, receives a reflected wave for the same from an obstacle by means of an ultrasonic wave receiver 5 and receives a signal through a receiving circuit 4. Then, the microcomputer 8 performs predetermined operation based upon these inputted signals and changes, in phased indication of the distance to the obstacle, relation between each boundary distance and a detected distance to the obstacle by the predetermined distance, and subsequently has a distance shorter to the car than the detected distance by the predetermined distance, indicated on an indication measure 10.
JP56061695A 1981-04-23 1981-04-23 Rear obstacle indicator system for car Pending JPS57175448A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56061695A JPS57175448A (en) 1981-04-23 1981-04-23 Rear obstacle indicator system for car

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56061695A JPS57175448A (en) 1981-04-23 1981-04-23 Rear obstacle indicator system for car

Publications (1)

Publication Number Publication Date
JPS57175448A true JPS57175448A (en) 1982-10-28

Family

ID=13178636

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56061695A Pending JPS57175448A (en) 1981-04-23 1981-04-23 Rear obstacle indicator system for car

Country Status (1)

Country Link
JP (1) JPS57175448A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014106115A (en) * 2012-11-27 2014-06-09 Nissan Motor Co Ltd Obstacle detection apparatus, acceleration suppression control apparatus, and obstacle detection method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014106115A (en) * 2012-11-27 2014-06-09 Nissan Motor Co Ltd Obstacle detection apparatus, acceleration suppression control apparatus, and obstacle detection method

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