WO2007122546A3 - Method and device for monitoring the condition of halogen bulbs in vehicle headlights - Google Patents

Method and device for monitoring the condition of halogen bulbs in vehicle headlights Download PDF

Info

Publication number
WO2007122546A3
WO2007122546A3 PCT/IB2007/051359 IB2007051359W WO2007122546A3 WO 2007122546 A3 WO2007122546 A3 WO 2007122546A3 IB 2007051359 W IB2007051359 W IB 2007051359W WO 2007122546 A3 WO2007122546 A3 WO 2007122546A3
Authority
WO
WIPO (PCT)
Prior art keywords
short
monitoring
condition
vehicle headlights
detecting
Prior art date
Application number
PCT/IB2007/051359
Other languages
French (fr)
Other versions
WO2007122546A2 (en
Inventor
Mathieu H. J. Van Rijswick
Ton R. Mulderij
Jos Van Meurs
Original Assignee
Koninklijke Philips Electronics N.V.
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 Koninklijke Philips Electronics N.V. filed Critical Koninklijke Philips Electronics N.V.
Publication of WO2007122546A2 publication Critical patent/WO2007122546A2/en
Publication of WO2007122546A3 publication Critical patent/WO2007122546A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/44—Testing lamps
    • 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
    • B60Q11/00—Arrangement of monitoring devices for devices provided for in groups B60Q1/00 - B60Q9/00
    • B60Q11/005—Arrangement of monitoring devices for devices provided for in groups B60Q1/00 - B60Q9/00 for lighting devices, e.g. indicating if lamps are burning or not
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/20—Responsive to malfunctions or to light source life; for protection
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/20—Responsive to malfunctions or to light source life; for protection
    • H05B47/21—Responsive to malfunctions or to light source life; for protection of two or more light sources connected in parallel
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/20—Responsive to malfunctions or to light source life; for protection
    • H05B47/25—Circuit arrangements for protecting against overcurrent
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/005—Testing of electric installations on transport means
    • G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks

Abstract

A method and device for monitoring the condition of halogen- bulbs (L) in vehicle headlights and signaling the approaching end of life of the bulb are described. The method comprises the step of detecting a short-circuiting event of a turn in the lamp filament, or the step of detecting a short-circuited turn in the lamp filament. A short-circuiting event is detected by detecting a stepwise increase in lamp current (2,t1 ) of the order of more than 3%, preferably more than 5%. A short-circuited turn -in the lamp filament is detected by providing an image of the glowing filament and visually inspecting the image for dark spots.
PCT/IB2007/051359 2006-04-21 2007-04-17 Method and device for monitoring the condition of halogen bulbs in vehicle headlights WO2007122546A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP06112929 2006-04-21
EP06112929.2 2006-04-21

Publications (2)

Publication Number Publication Date
WO2007122546A2 WO2007122546A2 (en) 2007-11-01
WO2007122546A3 true WO2007122546A3 (en) 2009-11-05

Family

ID=38625386

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/051359 WO2007122546A2 (en) 2006-04-21 2007-04-17 Method and device for monitoring the condition of halogen bulbs in vehicle headlights

Country Status (1)

Country Link
WO (1) WO2007122546A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009101580A2 (en) * 2008-02-12 2009-08-20 Philips Intellectual Property & Standards Gmbh Method for monitoring the lifetime of a filament lamp and filament lamp assembly
US20140091044A1 (en) * 2012-09-28 2014-04-03 Enaqua Individualized intelligent control of lamps in an ultraviolet fluid disinfection system
CN103116139B (en) * 2013-01-23 2016-03-23 重庆恒又源科技发展有限公司 Street lamp fault detection method, pick-up unit and detection system thereof
ITCO20130003A1 (en) * 2013-02-04 2013-05-06 Gianantonio Moretto APPARATUS FOR DETECTION OF FAILED LAMPS IN A UNIVERSAL VEHICLE SYSTEM WITH NON-INVASIVE INSTALLATION

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2157903A (en) * 1984-04-24 1985-10-30 Plessey Co Plc Lamp monitoring apparatus
JPH0266892A (en) * 1988-08-31 1990-03-06 Hoya Corp Lamp failure sensor circuit and lamp changeover device
US5126634A (en) * 1990-09-25 1992-06-30 Beacon Light Products, Inc. Lamp bulb with integrated bulb control circuitry and method of manufacture
US5294865A (en) * 1992-09-18 1994-03-15 Gte Products Corporation Lamp with integrated electronic module
WO2000024229A1 (en) * 1998-10-22 2000-04-27 Safegate International Ab Deteriorated filament detection
DE19905709A1 (en) * 1999-02-11 2000-08-31 Siemens Ag Procedure to recognise automobile lamp failure
DE10256894A1 (en) * 2002-11-29 2004-06-09 Volkswagen Ag Diagnostics device for diagnostic tests on a motor vehicle's headlamp or rear lamp has a testing device for detecting a lamp's operating capacity evaluated by a device to determine likely failure

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2157903A (en) * 1984-04-24 1985-10-30 Plessey Co Plc Lamp monitoring apparatus
JPH0266892A (en) * 1988-08-31 1990-03-06 Hoya Corp Lamp failure sensor circuit and lamp changeover device
US5126634A (en) * 1990-09-25 1992-06-30 Beacon Light Products, Inc. Lamp bulb with integrated bulb control circuitry and method of manufacture
US5294865A (en) * 1992-09-18 1994-03-15 Gte Products Corporation Lamp with integrated electronic module
WO2000024229A1 (en) * 1998-10-22 2000-04-27 Safegate International Ab Deteriorated filament detection
DE19905709A1 (en) * 1999-02-11 2000-08-31 Siemens Ag Procedure to recognise automobile lamp failure
DE10256894A1 (en) * 2002-11-29 2004-06-09 Volkswagen Ag Diagnostics device for diagnostic tests on a motor vehicle's headlamp or rear lamp has a testing device for detecting a lamp's operating capacity evaluated by a device to determine likely failure

Also Published As

Publication number Publication date
WO2007122546A2 (en) 2007-11-01

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