JPS57120875A - Method for monitoring rear of vehicle - Google Patents

Method for monitoring rear of vehicle

Info

Publication number
JPS57120875A
JPS57120875A JP56006176A JP617681A JPS57120875A JP S57120875 A JPS57120875 A JP S57120875A JP 56006176 A JP56006176 A JP 56006176A JP 617681 A JP617681 A JP 617681A JP S57120875 A JPS57120875 A JP S57120875A
Authority
JP
Japan
Prior art keywords
obstruction
photodetector
horizontal direction
detection areas
light beams
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
JP56006176A
Other languages
Japanese (ja)
Inventor
Suteo Tsutsumi
Masaru Tsudagawa
Hiroshi Seki
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP56006176A priority Critical patent/JPS57120875A/en
Publication of JPS57120875A publication Critical patent/JPS57120875A/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
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications
    • G01S17/93—Lidar systems specially adapted for specific applications for anti-collision purposes
    • G01S17/931—Lidar systems specially adapted for specific applications for anti-collision purposes of land vehicles

Abstract

PURPOSE:To widen detection areas by using a light projector which projects light beams of a sheet shape wide in a horizontal direction and narrow in a vertical direction. CONSTITUTION:When an obstruction exists in any of detection areas 7, 8, 9, a part of the irregularly reflected light from the obstruction by the radiated light beams is received in a photodetector 2. The reflected light from the obstruction detected with the photodetector 2 is converted to an electric signal by a photoelectric transducer. In accordance with this electric signal, the obstruction in the rear of the vehicle is detected. The light beams 3, 4, 5 radiated from this projector 1 and the visual field 6 of the photodetector 2 are widened in a horizontal direction, whereby the detection areas 7, 8, 9 in a horizontal direction are widened.
JP56006176A 1981-01-19 1981-01-19 Method for monitoring rear of vehicle Pending JPS57120875A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56006176A JPS57120875A (en) 1981-01-19 1981-01-19 Method for monitoring rear of vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56006176A JPS57120875A (en) 1981-01-19 1981-01-19 Method for monitoring rear of vehicle

Publications (1)

Publication Number Publication Date
JPS57120875A true JPS57120875A (en) 1982-07-28

Family

ID=11631235

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56006176A Pending JPS57120875A (en) 1981-01-19 1981-01-19 Method for monitoring rear of vehicle

Country Status (1)

Country Link
JP (1) JPS57120875A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5975174A (en) * 1982-10-21 1984-04-27 Hokuyo Automatic Co Three-dimensional position detector for article using projector and photodetector
JPS59126276A (en) * 1983-01-07 1984-07-20 Fujitsu Ten Ltd Apparatus for detecting obstacle in lateral side of automobile
JPS59126273A (en) * 1983-01-07 1984-07-20 Fujitsu Ten Ltd Obstacle detecting apparatus
JPS6040984A (en) * 1983-08-17 1985-03-04 Fujitsu Ten Ltd Approaching matter detecting apparatus
FR2563646A1 (en) * 1984-04-25 1985-10-31 Matsushita Electric Works Ltd OBJECT SENSOR APPARATUS COMPRISING PHOTODETECTORS AND FOR RESTRICTED DETECTION AREA
EP0475169A2 (en) * 1990-09-11 1992-03-18 Bayerische Motoren Werke Aktiengesellschaft Laser beam device for vehicles
US6076598A (en) * 1996-09-10 2000-06-20 Mitsubishi Denki Kabushiki Kaisha Opposed flow heat exchanger
JP2016211200A (en) * 2015-05-07 2016-12-15 株式会社アルファ Vehicle door controller
JP2018059831A (en) * 2016-10-06 2018-04-12 京セラ株式会社 Range finder, vehicle, and ranging method

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5975174A (en) * 1982-10-21 1984-04-27 Hokuyo Automatic Co Three-dimensional position detector for article using projector and photodetector
JPS59126276A (en) * 1983-01-07 1984-07-20 Fujitsu Ten Ltd Apparatus for detecting obstacle in lateral side of automobile
JPS59126273A (en) * 1983-01-07 1984-07-20 Fujitsu Ten Ltd Obstacle detecting apparatus
JPS6040984A (en) * 1983-08-17 1985-03-04 Fujitsu Ten Ltd Approaching matter detecting apparatus
FR2563646A1 (en) * 1984-04-25 1985-10-31 Matsushita Electric Works Ltd OBJECT SENSOR APPARATUS COMPRISING PHOTODETECTORS AND FOR RESTRICTED DETECTION AREA
US4656462A (en) * 1984-04-25 1987-04-07 Matsushita Electric Works, Ltd. Object detecting apparatus including photosensors for restricted detection area
EP0475169A2 (en) * 1990-09-11 1992-03-18 Bayerische Motoren Werke Aktiengesellschaft Laser beam device for vehicles
US6076598A (en) * 1996-09-10 2000-06-20 Mitsubishi Denki Kabushiki Kaisha Opposed flow heat exchanger
JP2016211200A (en) * 2015-05-07 2016-12-15 株式会社アルファ Vehicle door controller
JP2018059831A (en) * 2016-10-06 2018-04-12 京セラ株式会社 Range finder, vehicle, and ranging method

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