EP1477046A1 - Lampensensor für ein vorschaltegerät zum betrieb einer gasentladungslampe - Google Patents
Lampensensor für ein vorschaltegerät zum betrieb einer gasentladungslampeInfo
- Publication number
- EP1477046A1 EP1477046A1 EP03704522A EP03704522A EP1477046A1 EP 1477046 A1 EP1477046 A1 EP 1477046A1 EP 03704522 A EP03704522 A EP 03704522A EP 03704522 A EP03704522 A EP 03704522A EP 1477046 A1 EP1477046 A1 EP 1477046A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lamp
- gas discharge
- voltage
- circuit
- discharge lamp
- 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
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 22
- 230000008878 coupling Effects 0.000 claims abstract description 18
- 238000010168 coupling process Methods 0.000 claims abstract description 18
- 238000005859 coupling reaction Methods 0.000 claims abstract description 18
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 238000011156 evaluation Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims description 32
- 238000005259 measurement Methods 0.000 claims description 3
- 230000007257 malfunction Effects 0.000 abstract description 8
- 238000004804 winding Methods 0.000 description 6
- 230000001939 inductive effect Effects 0.000 description 5
- 241000283153 Cetacea Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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
- H05B41/295—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 with preheating electrodes, e.g. for fluorescent lamps
- H05B41/298—Arrangements for protecting lamps or circuits against abnormal operating conditions
- H05B41/2981—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
- H05B41/2985—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal lamp 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
- H05B41/282—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
- H05B41/285—Arrangements for protecting lamps or circuits against abnormal operating conditions
- H05B41/2851—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
- H05B41/2855—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal lamp operating conditions
Definitions
- the invention relates to a ballast for at least one gas discharge lamp.
- the lamp electrodes are preheated before the ignition voltage is applied between them. It has been shown that the life of the lamps can be extended to a considerable extent by this measure.
- the gas discharge lamp is generally operated on a series resonant circuit, wherein the resonant circuit capacitor is generally parallel to the discharge path of the gas discharge lamp.
- the electrodes of the lamp are designed as heating coils, through which the current of the resonant circuit flows when the lamp is not lit.
- the frequency is changed relative to the resonance frequency of the series resonant circuit such that the voltage across the resonant capacitor and thus across the gas discharge lamp does not cause ignition of the gas discharge lamp.
- a substantially constant current flows through the lamp electrodes designed as helices, so that they are preheated.
- the frequency is set in the vicinity of the resonant frequency of the resonant circuit, whereby the voltage across the resonant capacitor is increased so that the gas discharge lamp finally ignites.
- the ballast should additionally have a function monitoring the status of the lamp in order to detect any malfunctions and to be able to initiate appropriate measures. These measures may include, for example, the shutdown of the high voltage part. A malfunction may occur, for example, if one of the two coils or both are defective, or if the lamp has been completely removed or not (correctly) inserted into the sockets of the lamp.
- EP 0 707 439 A1 discloses a method in which, in the case of an electronic ballast for a gas discharge lamp, the voltage drop is measured via a resistor connected in series with the primary winding of a heating transformer and thus the heating current in order to detect whether there is a coil breakage , or no lamp was inserted into the socket in the lamp.
- FIG. 3 shows schematically a section of a ballast, on the one hand for detecting a lamp fault
- an inverter with its two alternately clocked switches (power transistors) 17 and 18 is designated schematically.
- a load circuit 3 is connected, which has a series resonant circuit 22, consisting of a resonance inductor 16 (L R ) and a resonant capacitor 5 (C R ).
- an LD pelkondensator 2 ⁇ C ⁇ ) is provided, which connects the load circuit 3 to the capacitive node of the inverter. 1
- the discharge path of the lamp 4 is connected in parallel with the resonance capacitor 5.
- the heating coils 8 and 9 of the gas discharge lamp 4 can be seen.
- a measuring resistor 26 (j?) Is connected, through which the lamp current and the Helical current flows.
- a measuring signal 10a (S1) can be tapped which shows whether a heating current can flow through the filaments 8 and 9 in the unfired state of the lamp and thus if a lamp 4 with proper heating filaments 8 and 9 is inserted in the provided sockets.
- a voltage divider te 7 connected in parallel to the gas discharge lamp. 4
- This voltage divider 7 has two resistors 14 and 15 (R 1 and R 2 ), which are connected in series.
- a signal 10b (S2) can be tapped, which is representative of the voltage applied across the discharge path of the gas discharge lamp 4 voltage.
- the invention thus provides a ballast for operating a gas discharge lamp.
- an inverter which has two series-connected and connected to a DC voltage source, in push-pull transistor switch ( ⁇ i or T 2 ), which are connected via a coupling capacitor (C ⁇ ) with a load circuit.
- the load circuit as already known from the prior art, the gas discharge lamp and a series resonant circuit.
- a sensor circuit is provided for the combined detection of a lamp failure and the voltage applied to the lamp based on a single measurement signal (S2).
- the sensor circuit has a voltage divider which, on the one hand, is connected to the "upper" potential-carrying filament of the lamp and, on the other hand, to ground.
- the sensor circuit 6 makes it possible to tap a sensor signal (S2) to detect a lamp malfunction or to detect the lamp voltage.
- S2 sensor signal
- a high-impedance resistor R ⁇ can be connected in parallel to form in a simple manner a DC branch.
- the sensor circuit may be integrated in an ASIC.
- the heating power can be capacitively or inductively coupled into at least one filament of the gas discharge lamp.
- a method for detecting the lamp voltage and for detecting a lamp failure in a ballast for gas discharge lamps is provided according to the invention.
- the detection of the lamp voltage and the detection of a spiral breakage of the lamp based on a single measuring signal (S2).
- S2 a single measuring signal
- the filament current is monitored and during normal operation the lamp current is monitored.
- FIG. 1 shows a first embodiment of the invention in a schematic way
- Fig. 2 shows a further embodiment of the invention
- FIG. 3 shows a further basic possibility for detecting a lamp malfunction and for detecting the voltage applied to the discharge path of the lamp.
- the ballast according to the invention has an inverter 1 with two series-connected, connected to a DC voltage source U bus and alternately clocked transistor switches 17 and 18 (2 and T 2 ) on.
- the switching can be effected by a control unit 23, which can be realized as an integrated circuit (IC) and in particular in an ASIC.
- a load circuit 3 is connected, which has a series resonant circuit 22 and the lamp 4.
- the series resonant circuit 22 consists of a resonance inductor 16 (L R ) and a resonant capacitor 5 (C R ).
- the discharge path of the gas discharge lamp 4 between the two heating coils 8 and 9 is, as known, connected in parallel to the resonance capacitor 5 (C R ).
- a high-resistance resistor 12 (R ⁇ ) is connected, so that bypassing the coupling capacitor 2 (C ⁇ ) a low direct current I DC through the upper heating coil 8 and a later explained in more detail Voltage divider 7 can flow.
- a voltage divider 7 with the resistors 14 and 15 (i ⁇ or R 2 ) is connected in parallel with the parallel connection of the gas discharge lamp 4 and the resonance capacitor 5 (C R ). More specifically, the voltage divider 7 is provided on the side facing away from the coupling capacitor 2 [C ⁇ ) side of the lamp 4 and thus, viewed from the inverter 1, the upper heating coil 8 downstream.
- a direct current I ⁇ C flows through the resistors 14 and 15 (R x or R 2 ) of the voltage divider 7.
- Measuring signal 10b sensor signal S2
- This evaluation circuit 13 can also be implemented as an integrated circuit.
- the voltage divider 7 together with the signal tap 11 thus represents a sensor circuit 6 for detecting a lamp failure as well as for detecting the lamp voltage.
- the evaluation circuit 13 can detect the following luminous states depending on the value of the sensor signal 10b (S2):
- the high-resistance resistor 12 (R K ) in the parallel branch of the coupling capacitor 2 [C K ] furthermore has the advantage of having the so-called "whale”, ie alternately bright and dark sections in the gas discharge lamp 4, can at least greatly reduce by providing a certain DC component.
- Fig. 2 shows another embodiment of the present invention.
- the coupling of the heating power into the heating coils 8 and 9 takes place inductively via the two coils 19 and 20 (Lhi or h2 ) of a transformer. gers. While a capacitive coupling of the heating power is usually preferred for non-dimmed devices, the dimmed devices, the inductive form of Schumacherseinkopplung is preferred.
- the primary winding 21 (Lh 3 ) of a separate transformer can be used as a primary winding for the inductive heating power transmission.
- the resonance inductance 16 (L R ) is also shown schematically that the primary winding 21 (Lh 3 ) of a separate transformer can be used as a primary winding for the inductive heating power transmission.
- the resonance inductance 16 (L R ) is also shown schematically as a primary winding for the inductive coupling of the heating power into the heating coils 8 and 9 of the gas discharge lamp 4.
- any type of coupling of the heating power into the heating coils 8 and 9 can be used.
- Inverter implemented as two series-connected normally-off n-channel MOSFETs T x and T 2
- Load circuit consisting of a series resonant circuit 22 and a gas discharge lamp. 4
- Sensor circuit (realized as a voltage divider 7 with the resistors Ri and R 2 ) for detecting a disturbance of the gas discharge lamp 4 and for detecting a voltage drop across the gas discharge lamp. 4
- Voltage divider used as the sensor circuit 6 first (upper) heating coil of the gas discharge lamp 4 second (lower) heating coil of the gas discharge lamp. 4
- first clocked transistor switch (implemented as a self-blocking n-channel MQSFET T)
- second clocked transistor switch realized as a self-blocking n-channel MOSFET T 2 )
- inductance L hl (realized as a primary winding of a heating transformer Tr x ) for inductive coupling of the heating power in the first (upper) heating coil 8 of the gas discharge lamp. 4
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP08155561.7A EP1945008B1 (de) | 2002-02-18 | 2003-02-03 | Lampensensor für ein Vorschaltgerät zum Betrieb einer Gasentladungslampe |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10206731 | 2002-02-18 | ||
| DE10206731.7A DE10206731B4 (de) | 2002-02-18 | 2002-02-18 | Lampensensor für ein Vorschaltgerät zum Betrieb einer Gasentladunslampe |
| PCT/EP2003/001046 WO2003069963A1 (de) | 2002-02-18 | 2003-02-03 | Lampensensor für ein vorschaltegerät zum betrieb einer gasentladungslampe |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08155561.7A Division EP1945008B1 (de) | 2002-02-18 | 2003-02-03 | Lampensensor für ein Vorschaltgerät zum Betrieb einer Gasentladungslampe |
| EP08155561.7 Division-Into | 2008-05-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1477046A1 true EP1477046A1 (de) | 2004-11-17 |
| EP1477046B1 EP1477046B1 (de) | 2010-04-14 |
Family
ID=27635102
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03704522A Expired - Lifetime EP1477046B1 (de) | 2002-02-18 | 2003-02-03 | Lampensensor für ein vorschaltegerät zum betrieb einer gasentladungslampe |
| EP08155561.7A Expired - Lifetime EP1945008B1 (de) | 2002-02-18 | 2003-02-03 | Lampensensor für ein Vorschaltgerät zum Betrieb einer Gasentladungslampe |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08155561.7A Expired - Lifetime EP1945008B1 (de) | 2002-02-18 | 2003-02-03 | Lampensensor für ein Vorschaltgerät zum Betrieb einer Gasentladungslampe |
Country Status (6)
| Country | Link |
|---|---|
| EP (2) | EP1477046B1 (de) |
| CN (1) | CN1633830B (de) |
| AT (1) | ATE464774T1 (de) |
| AU (1) | AU2003206824A1 (de) |
| DE (2) | DE10206731B4 (de) |
| WO (1) | WO2003069963A1 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004037390B4 (de) * | 2004-08-02 | 2008-10-23 | Infineon Technologies Ag | Ansteuerschaltung für eine Leuchtstofflampe mit einer Diagnoseschaltung und Verfahren zur Diagnose einer Leuchtstofflampe |
| DE102005018763A1 (de) * | 2005-04-22 | 2006-10-26 | Tridonicatco Gmbh & Co. Kg | Betriebsgeräte mit Auswertung der Lampentemperatur bei der Lampenregelung |
| CN101155457B (zh) * | 2006-09-29 | 2011-06-08 | 鸿富锦精密工业(深圳)有限公司 | 具有跳火保护功能的光源驱动装置 |
| KR20110083823A (ko) * | 2010-01-15 | 2011-07-21 | 삼성전자주식회사 | 아크노이즈 검출 회로, 이를 포함하는 광원 구동 장치 및 이를 이용하는 광원 구동 방법 |
| CN106896244B (zh) * | 2017-04-12 | 2023-10-10 | 江苏伊施德创新科技有限公司 | 老炼夹具及采用该夹具做接触状况和老炼结果测试的方法 |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5041763A (en) * | 1989-12-22 | 1991-08-20 | Lutron Electronics Co., Inc. | Circuit and method for improved dimming of gas discharge lamps |
| DE4039161C2 (de) * | 1990-12-07 | 2001-05-31 | Zumtobel Ag Dornbirn | System zur Steuerung der Helligkeit und des Betriebsverhaltens von Leuchtstofflampen |
| DE4120649A1 (de) * | 1991-06-22 | 1992-12-24 | Vossloh Schwabe Gmbh | Ueberspannungsgeschuetztes vorschaltgeraet |
| ATE162922T1 (de) * | 1992-10-28 | 1998-02-15 | Knobel Lichttech | Verfahren und schaltungsanordnung zum zünden von leuchtstofflampen bei vorbestimmter temperatur der lampenkathoden |
| DE4301276A1 (de) * | 1993-01-19 | 1994-07-21 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Verfahren und Stromversorgungseinheit zum stabilisierten Betrieb einer Natrium-Hochdruckentladungslampe |
| DE4436463A1 (de) * | 1994-10-12 | 1996-04-18 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Schaltungsanordnung zum Betrieb einer oder mehrerer Niederdruckentladungslampen |
| DE19530485A1 (de) * | 1995-08-18 | 1997-02-20 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Verfahren und Schaltungsanordnung zum Betreiben einer elektrischen Lampe |
| DE19613149A1 (de) * | 1996-04-03 | 1997-10-09 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Schaltungsanordnung zum Betrieb elektrischer Lampen |
| US5808422A (en) * | 1996-05-10 | 1998-09-15 | Philips Electronics North America | Lamp ballast with lamp rectification detection circuitry |
| CN1172412A (zh) * | 1996-07-25 | 1998-02-04 | 浙江长丰电器实业公司 | 用于气体放电灯的电子镇流器 |
| JP3858317B2 (ja) * | 1996-11-29 | 2006-12-13 | 東芝ライテック株式会社 | 放電灯点灯装置及び照明装置 |
| US5883473A (en) * | 1997-12-03 | 1999-03-16 | Motorola Inc. | Electronic Ballast with inverter protection circuit |
| ES2195438T3 (es) * | 1997-12-23 | 2003-12-01 | Tridonicatco Gmbh & Co Kg | Balasto electronico. |
| DE19916080C2 (de) * | 1999-04-09 | 2001-11-22 | Vossloh Schwabe Elektronik | Vorschaltgerät mit Fehlererkennung |
| DE19934687A1 (de) * | 1999-05-25 | 2000-12-21 | Tridonic Bauelemente | Elektronisches Vorschaltgerät für mindestens eine Niederdruck-Entladungslampe |
| DE19923945A1 (de) * | 1999-05-25 | 2000-12-28 | Tridonic Bauelemente | Elektronisches Vorschaltgerät für mindestens eine Niederdruck-Entladungslampe |
| CN2421799Y (zh) * | 2000-04-27 | 2001-02-28 | 上海市照明灯具研究所 | 高品质可调光电子镇流器 |
-
2002
- 2002-02-18 DE DE10206731.7A patent/DE10206731B4/de not_active Expired - Fee Related
-
2003
- 2003-02-03 CN CN03804114.6A patent/CN1633830B/zh not_active Expired - Fee Related
- 2003-02-03 DE DE50312613T patent/DE50312613D1/de not_active Expired - Lifetime
- 2003-02-03 AU AU2003206824A patent/AU2003206824A1/en not_active Abandoned
- 2003-02-03 WO PCT/EP2003/001046 patent/WO2003069963A1/de not_active Ceased
- 2003-02-03 EP EP03704522A patent/EP1477046B1/de not_active Expired - Lifetime
- 2003-02-03 AT AT03704522T patent/ATE464774T1/de active
- 2003-02-03 EP EP08155561.7A patent/EP1945008B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03069963A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10206731A1 (de) | 2003-08-28 |
| ATE464774T1 (de) | 2010-04-15 |
| DE50312613D1 (de) | 2010-05-27 |
| CN1633830A (zh) | 2005-06-29 |
| EP1477046B1 (de) | 2010-04-14 |
| DE10206731B4 (de) | 2016-12-22 |
| EP1945008A1 (de) | 2008-07-16 |
| EP1945008B1 (de) | 2013-09-11 |
| WO2003069963A1 (de) | 2003-08-21 |
| CN1633830B (zh) | 2010-06-30 |
| AU2003206824A1 (en) | 2003-09-04 |
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