WO1998052788A3 - Vehicle headlamp controller - Google Patents

Vehicle headlamp controller Download PDF

Info

Publication number
WO1998052788A3
WO1998052788A3 PCT/SG1998/000037 SG9800037W WO9852788A3 WO 1998052788 A3 WO1998052788 A3 WO 1998052788A3 SG 9800037 W SG9800037 W SG 9800037W WO 9852788 A3 WO9852788 A3 WO 9852788A3
Authority
WO
WIPO (PCT)
Prior art keywords
headlamps
controller
conditions
filter
optical sensor
Prior art date
Application number
PCT/SG1998/000037
Other languages
French (fr)
Other versions
WO1998052788A9 (en
WO1998052788A2 (en
Inventor
Mun Chor Chow
Original Assignee
Mun Chor Chow
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 Mun Chor Chow filed Critical Mun Chor Chow
Priority to AU75623/98A priority Critical patent/AU7562398A/en
Publication of WO1998052788A2 publication Critical patent/WO1998052788A2/en
Publication of WO1998052788A9 publication Critical patent/WO1998052788A9/en
Publication of WO1998052788A3 publication Critical patent/WO1998052788A3/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
    • B60Q1/1415—Dimming circuits
    • B60Q1/1423—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
    • B60Q2300/30—Indexing codes relating to the vehicle environment
    • B60Q2300/31—Atmospheric conditions
    • B60Q2300/314—Ambient light
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
    • B60Q2300/30—Indexing codes relating to the vehicle environment
    • B60Q2300/33—Driving situation
    • B60Q2300/332—Driving situation on city roads
    • B60Q2300/3321—Detection of streetlights
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
    • B60Q2300/30—Indexing codes relating to the vehicle environment
    • B60Q2300/33—Driving situation
    • B60Q2300/337—Tunnels or bridges

Abstract

This invention is an automatic controller for switching on and off the headlamps of a vehicle according to the ambient lighting conditions. With just one optical sensor and a controller, the present invention when connected to the relay of the headlamps controls the headlamps accurately and intelligently under all conditions. The controller incorporates a filter (R3C2) and a voltage divider (VR1, VR2, R4) which in turn are connected to a comparator (IC1). The filter (R3C2) removes the alternating component of the output from the optical sensor caused by artificial lighting, while the voltage divider (VR1, VR2, R4) sets a preset threshold intelligently for the activation and deactivation of the headlamps in response to a variety of ambient conditions. The invention also switches off the car lamps when the engine is turned off. This will increase the life of the battery without the drivers having to remember to switch off and on the headlamps.
PCT/SG1998/000037 1997-05-22 1998-05-22 Vehicle headlamp controller WO1998052788A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU75623/98A AU7562398A (en) 1997-05-22 1998-05-22 Vehicle headlamp controller

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SG9701676 1997-05-22
SG9701676-0 1997-05-22

Publications (3)

Publication Number Publication Date
WO1998052788A2 WO1998052788A2 (en) 1998-11-26
WO1998052788A9 WO1998052788A9 (en) 1999-05-20
WO1998052788A3 true WO1998052788A3 (en) 1999-06-24

Family

ID=20429654

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SG1998/000037 WO1998052788A2 (en) 1997-05-22 1998-05-22 Vehicle headlamp controller

Country Status (2)

Country Link
AU (1) AU7562398A (en)
WO (1) WO1998052788A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10163356B4 (en) * 2001-12-21 2012-02-02 Hella Kgaa Hueck & Co. Method and device for the automatic control of a lighting device of a vehicle
CN112664917A (en) * 2020-12-28 2021-04-16 江苏爱玛车业科技有限公司 Intelligent automatic headlamp device for electric vehicle and implementation method thereof

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1529523A (en) * 1977-10-24 1978-10-25 Mcgowan J Automatic vehicle lighting unit
GB2064238A (en) * 1979-11-21 1981-06-10 Graham C J Automatic switching unit for vehicle driving lights
EP0055227A1 (en) * 1980-12-19 1982-06-30 Giuseppe Di Fazio Automatic headlight beam switching device for automotive vehicles
US4613791A (en) * 1984-02-02 1986-09-23 Honda Motor Co., Ltd. Automatic light control apparatus for vehicle
EP0355539A2 (en) * 1988-08-18 1990-02-28 Hella KG Hueck & Co. Device and method for controlling the lighting distance or the level of a vehicle
US5182502A (en) * 1991-05-06 1993-01-26 Lectron Products, Inc. Automatic headlamp dimmer
US5479323A (en) * 1992-11-19 1995-12-26 Koito Manufacturing Co., Ltd. Vehicular cornering lamp system
US5490005A (en) * 1991-12-10 1996-02-06 Robert Bosch Gmbh Light sensor on a surface of a light guide for use in displays
WO1997010686A1 (en) * 1995-09-15 1997-03-20 Ashby Robert Howitt Electrical power distribution switching means

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1529523A (en) * 1977-10-24 1978-10-25 Mcgowan J Automatic vehicle lighting unit
GB2064238A (en) * 1979-11-21 1981-06-10 Graham C J Automatic switching unit for vehicle driving lights
EP0055227A1 (en) * 1980-12-19 1982-06-30 Giuseppe Di Fazio Automatic headlight beam switching device for automotive vehicles
US4613791A (en) * 1984-02-02 1986-09-23 Honda Motor Co., Ltd. Automatic light control apparatus for vehicle
EP0355539A2 (en) * 1988-08-18 1990-02-28 Hella KG Hueck & Co. Device and method for controlling the lighting distance or the level of a vehicle
US5182502A (en) * 1991-05-06 1993-01-26 Lectron Products, Inc. Automatic headlamp dimmer
US5490005A (en) * 1991-12-10 1996-02-06 Robert Bosch Gmbh Light sensor on a surface of a light guide for use in displays
US5479323A (en) * 1992-11-19 1995-12-26 Koito Manufacturing Co., Ltd. Vehicular cornering lamp system
WO1997010686A1 (en) * 1995-09-15 1997-03-20 Ashby Robert Howitt Electrical power distribution switching means

Also Published As

Publication number Publication date
WO1998052788A9 (en) 1999-05-20
WO1998052788A2 (en) 1998-11-26
AU7562398A (en) 1998-12-11

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