JPS54162497A - Clash preventive unit - Google Patents

Clash preventive unit

Info

Publication number
JPS54162497A
JPS54162497A JP7192078A JP7192078A JPS54162497A JP S54162497 A JPS54162497 A JP S54162497A JP 7192078 A JP7192078 A JP 7192078A JP 7192078 A JP7192078 A JP 7192078A JP S54162497 A JPS54162497 A JP S54162497A
Authority
JP
Japan
Prior art keywords
obstacle
distances
radar
vehicle
clash
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
JP7192078A
Other languages
Japanese (ja)
Inventor
Kazuo Yasusaka
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP7192078A priority Critical patent/JPS54162497A/en
Publication of JPS54162497A publication Critical patent/JPS54162497A/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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • 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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/93185—Controlling the brakes
    • 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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/932—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles using own vehicle data, e.g. ground speed, steering wheel direction
    • 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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/9327—Sensor installation details
    • G01S2013/93271—Sensor installation details in the front of the vehicles

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

PURPOSE:To make it possible to judge accurately the existence of the danger of a clash by finging the sum of and difference between distances between two radar antennas arranged on the right and left of a vehicle, and an obstacle. CONSTITUTION:The 1st FM-CW radar 3 and 2nd FM-CW radar 4 which have 1st antenna 1 and 2nd antenna 2 with 90 deg.-different polarization surface at 1st fixed point 13 and 2nd fixed point 14 on the front left and righ sides of a vehicle measure independently distances to front obstacle 18, and digital signals are obtained by 1st F-D converter 5 and 2nd F-D converter 6 and then inputted to adders 7 and 8 respectively. The position of obstacle 18 is found by calculating the intersection between then sum (one trace of ellipse group 15) of distances from both antennas to obstacle 18 and the difference in distance (one of trace of hyperbola group 16) and collation circuit 10 compares it to a signal from circuit 9 stored with danger region 17 according to the speed of the vehicle, so that when the both agree each other, a braking signal will be outputted.
JP7192078A 1978-06-13 1978-06-13 Clash preventive unit Pending JPS54162497A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7192078A JPS54162497A (en) 1978-06-13 1978-06-13 Clash preventive unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7192078A JPS54162497A (en) 1978-06-13 1978-06-13 Clash preventive unit

Publications (1)

Publication Number Publication Date
JPS54162497A true JPS54162497A (en) 1979-12-24

Family

ID=13474442

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7192078A Pending JPS54162497A (en) 1978-06-13 1978-06-13 Clash preventive unit

Country Status (1)

Country Link
JP (1) JPS54162497A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59195175A (en) * 1983-04-21 1984-11-06 Caterpillar Mitsubishi Ltd Obstruction searching system for unmanned self- traveling body
JPS61105478A (en) * 1984-10-29 1986-05-23 Japan Radio Co Ltd Obstacle detection system
JPH03104884U (en) * 1990-02-07 1991-10-30
JP5310870B2 (en) * 2010-09-30 2013-10-09 トヨタ自動車株式会社 Moving object detection device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59195175A (en) * 1983-04-21 1984-11-06 Caterpillar Mitsubishi Ltd Obstruction searching system for unmanned self- traveling body
JPS61105478A (en) * 1984-10-29 1986-05-23 Japan Radio Co Ltd Obstacle detection system
JPH03104884U (en) * 1990-02-07 1991-10-30
JP5310870B2 (en) * 2010-09-30 2013-10-09 トヨタ自動車株式会社 Moving object detection device
US8830114B2 (en) 2010-09-30 2014-09-09 Toyota Jidosha Kabushiki Kaisha Mobile object detecting apparatus

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