EP0996315A3 - Method and apparatus for generating a status signal representing the operating state of a high-pressure gas discharge lamp in a motor vehicle - Google Patents

Method and apparatus for generating a status signal representing the operating state of a high-pressure gas discharge lamp in a motor vehicle Download PDF

Info

Publication number
EP0996315A3
EP0996315A3 EP99120661A EP99120661A EP0996315A3 EP 0996315 A3 EP0996315 A3 EP 0996315A3 EP 99120661 A EP99120661 A EP 99120661A EP 99120661 A EP99120661 A EP 99120661A EP 0996315 A3 EP0996315 A3 EP 0996315A3
Authority
EP
European Patent Office
Prior art keywords
status signal
lamp
generating
motor vehicle
operating state
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.)
Granted
Application number
EP99120661A
Other languages
German (de)
French (fr)
Other versions
EP0996315B1 (en
EP0996315A2 (en
Inventor
Volker Radtke
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.)
Hella GmbH and Co KGaA
Original Assignee
Hella KGaA Huek and Co
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 Hella KGaA Huek and Co filed Critical Hella KGaA Huek and Co
Publication of EP0996315A2 publication Critical patent/EP0996315A2/en
Publication of EP0996315A3 publication Critical patent/EP0996315A3/en
Application granted granted Critical
Publication of EP0996315B1 publication Critical patent/EP0996315B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/288—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
    • H05B41/292—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2928—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the lamp against abnormal operating conditions
    • 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
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/288—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
    • H05B41/292—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2921—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2925—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal lamp operating conditions

Abstract

The method involves measuring a lamp voltage (U) and current (I), comparing them with a demand value and generating a status signal that can adopt the values lamp on and lamp off. The status signal is set and stored if the lamp current exceeds an upper demand value and is reset if the lamp current falls below a lower demand value and the lamp voltage exceeds a demand value. An Independent claim is also included for an arrangement for generating a status signal regarding the operating state of a high pressure gas discharge lamp in a motor vehicle.
EP99120661A 1998-10-22 1999-10-19 Method and apparatus for generating a status signal representing the operating state of a high-pressure gas discharge lamp in a motor vehicle Expired - Lifetime EP0996315B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19848757 1998-10-22
DE19848757A DE19848757A1 (en) 1998-10-22 1998-10-22 Method and device for generating a status signal about the operating state of a high-pressure gas discharge lamp in a motor vehicle

Publications (3)

Publication Number Publication Date
EP0996315A2 EP0996315A2 (en) 2000-04-26
EP0996315A3 true EP0996315A3 (en) 2000-05-10
EP0996315B1 EP0996315B1 (en) 2004-04-28

Family

ID=7885317

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99120661A Expired - Lifetime EP0996315B1 (en) 1998-10-22 1999-10-19 Method and apparatus for generating a status signal representing the operating state of a high-pressure gas discharge lamp in a motor vehicle

Country Status (4)

Country Link
EP (1) EP0996315B1 (en)
AT (1) ATE265799T1 (en)
DE (2) DE19848757A1 (en)
ES (1) ES2218931T3 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0540924A1 (en) * 1991-11-06 1993-05-12 Hella KG Hueck & Co. Ballast for starting and operating high pressure discharge lamps
EP0577105A1 (en) * 1992-06-30 1994-01-05 Toshiba Lighting & Technology Corporation Inverter circuit and electrodeless discharge lamp lighting apparatus using the same
US5487088A (en) * 1993-10-28 1996-01-23 Infilco Degremont, Inc. Apparatus for monitoring lamp system status

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4017415C2 (en) * 1989-06-02 1994-04-14 Koito Mfg Co Ltd Circuit arrangement for operating a high-pressure discharge lamp for a vehicle headlight
JP2587720B2 (en) * 1990-10-19 1997-03-05 株式会社小糸製作所 Lighting circuit for vehicle discharge lamps
DE4136486A1 (en) * 1991-11-06 1993-05-13 Hella Kg Hueck & Co High power gas discharge lamp ballast for ignition and operation of lamp - uses bridge stage switched between DC mode for lamp ignition and AC mode for subsequent operation of lamp
JP3447776B2 (en) * 1993-09-17 2003-09-16 池田デンソー株式会社 Discharge lamp lighting device
JP3280540B2 (en) * 1995-05-12 2002-05-13 株式会社小糸製作所 Discharge lamp lighting circuit
JP3210570B2 (en) * 1996-02-29 2001-09-17 株式会社小糸製作所 Discharge lamp lighting circuit
JP3210584B2 (en) * 1996-07-25 2001-09-17 株式会社小糸製作所 Discharge lamp lighting circuit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0540924A1 (en) * 1991-11-06 1993-05-12 Hella KG Hueck & Co. Ballast for starting and operating high pressure discharge lamps
EP0577105A1 (en) * 1992-06-30 1994-01-05 Toshiba Lighting & Technology Corporation Inverter circuit and electrodeless discharge lamp lighting apparatus using the same
US5487088A (en) * 1993-10-28 1996-01-23 Infilco Degremont, Inc. Apparatus for monitoring lamp system status

Also Published As

Publication number Publication date
EP0996315B1 (en) 2004-04-28
ES2218931T3 (en) 2004-11-16
DE59909313D1 (en) 2004-06-03
DE19848757A1 (en) 2000-04-27
ATE265799T1 (en) 2004-05-15
EP0996315A2 (en) 2000-04-26

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