KR960035061A - Laser distance measuring method and apparatus for vehicle collision warning system - Google Patents

Laser distance measuring method and apparatus for vehicle collision warning system Download PDF

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Publication number
KR960035061A
KR960035061A KR1019950004836A KR19950004836A KR960035061A KR 960035061 A KR960035061 A KR 960035061A KR 1019950004836 A KR1019950004836 A KR 1019950004836A KR 19950004836 A KR19950004836 A KR 19950004836A KR 960035061 A KR960035061 A KR 960035061A
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KR
South Korea
Prior art keywords
laser beam
laser
warning system
vehicle
collision warning
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KR1019950004836A
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Korean (ko)
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KR0153874B1 (en
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최철재
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김주용
현대전자산업 주식회사
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Priority to KR1019950004836A priority Critical patent/KR0153874B1/en
Publication of KR960035061A publication Critical patent/KR960035061A/en
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Publication of KR0153874B1 publication Critical patent/KR0153874B1/en

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    • 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481—Constructional features, e.g. arrangements of optical elements
    • G01S7/4816—Constructional features, e.g. arrangements of optical elements of receivers alone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2420/00—Indexing codes relating to the type of sensors based on the principle of their operation
    • B60W2420/40—Photo, light or radio wave sensitive means, e.g. infrared sensors
    • B60W2420/408—Radar; Laser, e.g. lidar
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/44—Electric circuits
    • G01J2001/4446—Type of detector
    • G01J2001/446—Photodiode

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

1. 청구범위에 기개된 발명이 속한 기술분야1. TECHNICAL FIELD OF THE INVENTION

차량출돌경보시스템(CWS : COLLISION WARNING SYSTEM)CWS: COLLISION WARNING SYSTEM

2. 발명이 해결하고자 하는 기술적 과제2. Technical problem to be solved by the invention

자차에서 조사되어 선행차량에 반사된 레이저 빔만을 검출할 수 있도록 하므로서 자차와 선행차량간에 정확한 거리를 측정할 수 있게 할 뿐 아니라 이로인해 자량충돌경고시스템의 오작동을 방지할 수 있도록 하는 것임.By detecting only the laser beam irradiated from the own vehicle and reflected on the preceding vehicle, it is possible not only to measure the exact distance between the own vehicle and the preceding vehicle, but also to prevent malfunction of the collision collision warning system.

3. 발명의 해결방법의 요지3. Summary of Solution to Invention

자차에서 선편광되어 전방으로 조사되는 레이져 빔의 편광방향을 수평방향에 대하여 45°방향으로 회전시키고, 상기 전방으로 조사된 레이저 빔의 편광방향과 동일하게 45°방향의 편광된 레이저 빔만을 검출할 수 있도록 하므로서 대향차에서 조사된 레이저 빔에 의한 간섭을 차단할 수 있도록 하는 것을 특징으로 하는 것임.It is possible to rotate the polarization direction of the laser beam irradiated forward by linearly polarized light in the own vehicle in the 45 ° direction with respect to the horizontal direction, and detect only the polarized laser beam in the 45 ° direction identical to the polarization direction of the laser beam irradiated forward. It is to be able to block the interference by the laser beam irradiated from the opposite car.

4. 발명의 중요한 용도.4. Important uses of the invention.

차량충돌경보시스템(CWS)에서 자차와 선행차량간에 정확한 거리를 측정할 수 있게 하는 것임.CWS can measure the exact distance between the own vehicle and the preceding vehicle.

Description

차량충돌경보시스템용 레이저 거리측정방법 및 장치Laser distance measuring method and apparatus for vehicle collision warning system

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제3도는 본 발명이 적용된 일실시예를 보인 것으로서, (가)는 광학계의 구성을 보인 구성도이고, (나)는 광학계의 구성을 보인 요부정면도이고, (다)는 레이저 빔의 패턴과 편광방향을 보인 예시도이고, (라)는 레이저 빔 상호간의 편광방향을 보인 예시도이다. 제4도는 본 발명이 적용된 다른 실시예를 보인 것으로서, (가)는 광학계의 구성을 보인 구성도이고, (나)는 광학계의 구성을 보인 요부정면도이고, (다)는 레이저 빔의 패턴과 편광방향을 보인 예시도이고, (라)는 레이저 빔 상호간의 편광방향을 보인 예시도이다.Figure 3 shows an embodiment to which the present invention is applied, (a) is a block diagram showing the configuration of the optical system, (b) is a frontal front view showing the configuration of the optical system, (c) is a laser beam pattern and polarization It is an exemplary view showing the direction, (D) is an exemplary view showing the polarization direction between the laser beams. Figure 4 shows another embodiment to which the present invention is applied, (a) is a block diagram showing the configuration of the optical system, (b) is a frontal front view showing the configuration of the optical system, (c) is a pattern and polarization of the laser beam It is an exemplary view showing the direction, (D) is an exemplary view showing the polarization direction between the laser beams.

Claims (4)

자차에서 선편광되어 전방으로 조사되는 레이저 빔의 편광방향을 수평방향에 대하여 45°방향으로 회전시키고, 상기 레이저 빔의 편광방향과 동일하게 45° 방향으로 편광된 레이저 빔만을 검출할 수 있도록 하므로서 대향차에서 조사된 레이저 빔에 의한 갑섭을 차단할 수 있도록 하는 것을 특징으로 하는 차량충돌경보시스템용 레이저 거리측정방법.The polarization direction of the laser beam that is linearly polarized in the host vehicle and is irradiated to the front is rotated in the 45 ° direction with respect to the horizontal direction, so that only the laser beam polarized in the 45 ° direction as the polarization direction of the laser beam can be detected. Laser distance measurement method for a collision warning system, characterized in that to block the interference by the laser beam irradiated from. 선편광된 레이저 빔의 편광방향을 차량의 수평방향에 대하여 45°방향으로 틀어 일방향으로 조사하는 송광부(10)와; 상기 송광부(10)에서 조사된 레이저 빔의 편광방향과 동일하게 45°방향으로 편광된 레이저 빔만을 검출될 수 있도록 하는 수광부(20)로 구성된 것을 특징으로 하는 차량충돌경보시스템용 레이저 거리측정장치.A light transmitting part 10 for irradiating in one direction by rotating the polarization direction of the linearly polarized laser beam in a 45 ° direction with respect to the horizontal direction of the vehicle; Laser distance measuring apparatus for a vehicle collision warning system, characterized in that the light receiving unit 20 configured to detect only the laser beam polarized in the 45 ° direction the same as the polarization direction of the laser beam irradiated from the transmitting unit 10 . 제2항에 있어서, 상기 송광부(10)는, 선편광된 레이저 빔을 발생시키는 반도체 레이저(11)와; 상기 반도체 레이저(11)에서 발생된 레이저 빔의 편광방향을 수평방향에 대하여 45°방향으로 회전시키는 1/2광학위상판(13)과; 상기 1/2광학위상판(13)을 통과하여 편광방향이 45°방향으로 회전된 레이저 빔을 집속하여 일방으로조사하는 집속렌즈(12)로 구성된 것을 특징으로 하는 차량충돌경보시스템용 레이저 거리측정장치.3. The light transmitting unit (10) according to claim 2, further comprising: a semiconductor laser (11) for generating a linearly polarized laser beam; A 1/2 optical phase plate (13) for rotating the polarization direction of the laser beam generated by the semiconductor laser (11) in a 45 ° direction with respect to the horizontal direction; Laser distance measurement for a vehicle collision warning system comprising a focusing lens 12 that passes through the 1/2 optical phase plate 13 and focuses a laser beam rotated in a 45 ° direction in a polarization direction. Device. 제2항에 있어서, 상기 수광부(20)는, 외란광의 영향을 줄일 수 있도록 가시광선을 차단하고 입사되는 적외선 영역의 빔을 투과시키는 적외선투과필터(21)와; 상기 적외선투과필터(21)를 통과한 레이저 빔을 집광하여 레이저 빔의 에너지 밀도를 높이는 집광렌즈(22)와; 상기 집광렌즈(22)를 통과하여 입사된 레이저 빔중에서 상기 송광부(10)에서 조사된 레이저 빔의 편광방향과 동일하게 45°방향으로 편광된 레이저 빔만을 선택적으로 투과시키는 적외선 편광자(24)와; 상기 적외선 편광자(24)를 투과한 레이저 빔을 검출하는 포토 다이오드(23)로 구성된 것을 특징으로 하는 차량충돌경보시스템용 레이저 거리측정장치.The method of claim 2, wherein the light receiving unit 20, the infrared transmission filter 21 for blocking the visible light so as to reduce the influence of the disturbance light and transmit the beam of the incident infrared region; A condenser lens 22 for condensing the laser beam passing through the infrared transmission filter 21 to increase the energy density of the laser beam; An infrared polarizer 24 for selectively transmitting only the laser beam polarized in the 45 ° direction in the same direction as the polarization direction of the laser beam irradiated from the transmitter 10 among the laser beams incident through the condenser lens 22; ; Laser collision measuring system for a vehicle collision warning system, characterized in that consisting of a photodiode (23) for detecting the laser beam transmitted through the infrared polarizer (24). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950004836A 1995-03-09 1995-03-09 Laser distance measurement apparatus for vehicle collision warning system KR0153874B1 (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150052469A (en) * 2013-11-06 2015-05-14 현대모비스 주식회사 Vehicle Controlling Method and Apparatus therefor

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101333572B1 (en) * 2011-12-28 2013-12-02 컴레이저 (주) Ship Approach Warning System and Warning Method for Bridge Protect
KR101700445B1 (en) * 2015-10-28 2017-01-31 주식회사 바이옵틱 Apparatus for vehicle collision

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150052469A (en) * 2013-11-06 2015-05-14 현대모비스 주식회사 Vehicle Controlling Method and Apparatus therefor

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