EP2263421A1 - Detection of the assignment of a terminal of an operating device for illumination means - Google Patents
Detection of the assignment of a terminal of an operating device for illumination meansInfo
- Publication number
- EP2263421A1 EP2263421A1 EP09726705A EP09726705A EP2263421A1 EP 2263421 A1 EP2263421 A1 EP 2263421A1 EP 09726705 A EP09726705 A EP 09726705A EP 09726705 A EP09726705 A EP 09726705A EP 2263421 A1 EP2263421 A1 EP 2263421A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- voltage
- primary winding
- mains voltage
- operating device
- terminal
- 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
- 238000001514 detection method Methods 0.000 title claims abstract description 15
- 238000005286 illumination Methods 0.000 title 1
- 238000004804 winding Methods 0.000 claims abstract description 57
- 229920006395 saturated elastomer Polymers 0.000 claims description 11
- 238000011156 evaluation Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 238000002955 isolation Methods 0.000 claims description 6
- 230000001419 dependent effect Effects 0.000 claims 1
- 239000003990 capacitor Substances 0.000 description 2
- 239000011162 core material Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 208000032365 Electromagnetic interference Diseases 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007935 neutral effect Effects 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
- H05B41/2983—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal power supply 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
- H05B41/36—Controlling
Definitions
- the present invention relates to control gear or electronic ballasts that can operate different bulbs such as gas discharge lamps or LEDs.
- the invention relates to such an operating device in which the user 'can make a specification with respect to the type, in particular the wattage (power class) of the illuminant to be operated, occupying one of several inputs, in particular by connecting a mains voltage.
- the operating device must recognize the assignment, in particular with mains voltage and selects depending on operating parameters for a connected light source.
- Such operating devices are often also called multi-lamp devices.
- Electronic ballasts for gas discharge lamps can have at least two different terminals on the input side for connecting a mains voltage (one per selectable lamp type), so that the user can specify the lamp type to be operated or the wattage to be operated via the mains voltage connection.
- the invention has for its object to provide a technique for detecting the occupation of a terminal of a control gear for lighting.
- an electronic ballast for operating a light source, in particular a gas discharge lamp has at least two voltage connections for connecting a mains voltage.
- the ballast has a transformer whose primary winding is connected to one of the voltage terminals. A saturation or at least an impedance change of this primary winding occurs accordingly when the mains voltage is applied to this voltage terminal. In contrast, a saturation or impedance change of this primary winding does not occur if no mains voltage is present at the voltage connection.
- the ballast has a circuit for detecting the saturation or an impedance change of this primary winding. According to the general idea of the invention, the application of a mains voltage is carried out with potential separation.
- the detection of the saturation or an impedance change of the primary winding can be done by evaluating the impedance of the secondary winding of the transformer, in particular by a control unit.
- the secondary winding can be supplied with a reference voltage.
- a power source can be used in series with the Secondary winding can be selectively turned on, and in particular selectively turned on and off.
- a control unit can evaluate the voltage or current profile of the secondary winding.
- the evaluation of the impedance of the secondary winding can be carried out during at least one half-wave of the mains voltage or during two or more half-cycles of the mains voltage.
- connection of the mains voltage to the first or second voltage connection can represent a first or second logic state.
- connection of the mains voltage to the first and second voltage connection may indicate a first or second lamp type.
- the electronic ballast may have a memory unit for storing the determined logic state or lamp type.
- a circuit arrangement for detecting the connection of a voltage to a voltage terminal has two connections for connecting a transformer.
- the primary winding of the transformer is connected to the power connection.
- a saturation or impedance change of this primary winding only occurs when the voltage is applied to the voltage connection.
- the circuit arrangement has means for detecting the saturation or impedance change of the primary winding.
- the circuit arrangement can preferably be designed in the form of an ASIC (application-specific integrated circuit).
- ASIC application-specific integrated circuit
- An inventive ballast preferably has two different terminals on the input side for connecting the mains voltage, so that the user can specify the wattage to be operated via the mains voltage connection.
- a transformer is provided, whose primary winding is connected to a mains voltage connection.
- the transformer is designed to saturate the primary winding.
- the impedance of the secondary winding of the transformer is assessed. There are several methods for this.
- the decisive factor is the evaluation of a parameter that depends on the impedance of the secondary winding of the transformer.
- the evaluation can be integrated into an ASIC.
- the secondary winding is supplied with a reference voltage.
- a switch is selectively closed via a predetermined signal from the ASIC to the resulting voltage or current waveform evaluate. After a single decision as to which terminal is connected, the switch on the secondary side is opened. The decision regarding the wattage selected by the user via the power terminals can be saved.
- the evaluation of the impedance on the secondary side must be sufficiently long to ensure that the evaluation is not carried out in the area of the zero crossing of the mains voltage. Preferably, for example, a period of several half-waves is evaluated.
- the galvanic isolation between the mains voltage and the means for evaluating whether there is a mains voltage is provided by the transformer.
- existing elementary blocks or units of an ASIC, such as comparator or power source, can be used.
- the invention also relates to a method for detecting the occupancy of a terminal of a power supply for lamps with mains voltage, wherein the terminal is connected to a coil which is saturated when the mains voltage applied, and is detected under galvanic isolation, whether the coil is saturated ,
- Another aspect of the invention relates to a. Method for specifying operating parameters for lighting means by occupying one of a plurality of possible terminals of a power supply for mains voltage lamps, wherein
- the terminal is connected to a coil which is saturated when the mains voltage is applied,
- Yet another aspect of the invention relates to a control unit for an operating device for lighting, in particular integrated circuit such as an ASIC or microprocessor.
- Fig. 3 shows a form of the embodiment shown in Fig. 2, and
- Fig. 4 shows a further form of the embodiment shown in Fig. 2.
- a first embodiment of the present invention is shown schematically.
- Fig. 1 shows an electronic ballast 1 with two inputs or mains voltage terminals 2, 3 for a mains voltage of usually 50Hz.
- the two connection configurations for the mains voltage correspond to a respective lamp type whose external preselection is recognized by the ballast 1 according to the invention.
- the individual lamp types may differ in particular by different operating parameters or by lamp-specific parameters, and, for example, lamp current, lamp voltage, filament voltage, filament current, ignition voltage, preheating time, etc.
- the electronic ballast 1 is designed to adjust with respect to the operating parameters on the lamp type with a first power or rated power of 7OW or with a second power or rated power of 35W.
- the primary winding W of a transformer T is connected in series with one of the two mains voltage terminals 2, 3 or Terminals connected.
- the transformer T is a current transformer (CT) which is a special transformer for measuring large alternating currents.
- the transformer T thus has a primary winding W, which measures the current through the branch of the corresponding mains voltage connection 2, 3. This current is inversely proportional to the ratio primary and secondary winding W, W reduced and measured in the circuit of the secondary winding W, wherein the transformer T provides for galvanic isolation.
- a resistor R is provided in parallel to the secondary winding W 'of the transformer T.
- the voltage of this resistor W ' is detected by a control unit 12 by two lines 13, 14.
- this control unit 12 can close a mains supply of the ballast 1 via the terminal 3 and accordingly to a lamp power of 35W. Conversely, closed by the control unit 12 to a lamp power of 7OW.
- the intermediate circuit 6 is followed by a half-bridge inverter 7, which contains two alternately clocked switch (not shown). These switches are turned on and off by the control unit 12.
- the inverter 7 is followed by a resonant circuit 8, which is known to consist of a choke and a capacitor (not shown).
- the inverter 7 acts as a driver circuit for the lamp and can alternatively be designed as a full-bridge inverter or other switching regulator.
- the lamp 11 e.g. a gas discharge lamp such as in particular a low pressure or a high pressure discharge lamp (also called HID lamps, from the English term “high intensity discharge”) or one or more LEDs is connected in parallel to the capacitor of the resonant circuit 8 via outputs 9, 10 of the ballast 1.
- the circuit parts 4 to 8 are common and known in ballasts.
- the electronic ballast 21 is in turn provided with two terminal configurations 2, 3 and a neutral conductor 22. Depending on whether the mains voltage is connected to the first or the second mains voltage connection 2, 3, the ballast 21 is set to the lamp power 7OW or 35W.
- a saturable transformer 23 is provided in series with the second power supply terminal 3, and the primary winding 24 of the transformer 23 is connected to the second power supply terminal 3.
- the transformer 23 is optionally designed to saturate the primary winding 24.
- the impedance of the primary winding changes. According to the invention, the application of a mains voltage is carried out with potential separation, to which the person skilled in the fundamentally different possibilities (optocouplers, etc.) are known.
- a test signal generator 26 is designed to be active in the circuit of the secondary winding 25 of the transformer 23
- a detection circuit 27 is provided for detecting whether a current at the mains voltage terminal 3 is present.
- Test signal generator 26 and the detection circuit 27 are controlled by a controller 28.
- 29 may preferably be a gas discharge lamp 11 such as a low pressure or high pressure discharge lamp.
- FIG. 21 A particular form of this embodiment 21 is shown in FIG.
- the electronic ballast 31 has correspondingly two connection configurations 2, 3 and a transformer 23 with a primary winding, which is saturated when a power supply to the terminal 3 is connected.
- the further circuits 4 to 8 correspond to those of FIG. 1.
- the secondary winding 25 of the transformer 23 is connected in parallel with a diode Dl, this parallel circuit in turn in series between a voltage Vo of, for example, 3.3V and the generator 26th
- the generator 26 comprises a transistor 32 having on the base side of a voltage Vg and of a
- Pulse generator 33 is controlled. When the transistor 32 is conductive, there is a large current on the
- the voltage point Vg is connected to the transistor 32 through a resistor R2.
- Two diodes D2, D3 are connected between the base of transistor 32 and ground.
- the type of lamp can be recognized by the ballast 31, i. as can be distinguished between a connection of the mains voltage to the terminal 2 or to the terminal 3.
- the transformer 23 and its primary winding 24 are saturated.
- the voltage of the secondary winding 25 breaks down after reaching saturation to zero, so that at the voltage point Vc, the voltage Vo is measured.
- the transformer can only saturate when the primary current is one exceeds certain height. This height, which may depend in particular on the core cross-section of the transformer 23, the core material or the number of turns, is selected here such that when the mains voltage is applied, the transformer 23 actually saturates.
- control unit 12 can close to the rated power of 7OW to then operate the connected lamp 11 as a 70W lamp.
- control unit can store this information in a memory 38.
- Fig. 4 an alternative embodiment of the present invention is shown.
- a ballast 41 according to this embodiment differs from the form shown in FIG merely by generating 26 the active signal and by the current detection 47.
- the parallel to the diode Dl connected secondary winding 25 of the transformer 23 is connected on the one hand to a reference voltage Vref of, for example 3.3V and on the other hand to a positive input Vc of a comparator 42.
- This output voltage Vout is supplied to the control unit 12, which can thus close at a 35W rated power.
- the control unit 12 has an output 48 for controlling a switch 45 arranged in series with a current source 43.
- the series circuit of switch 45 and current source 43 is connected between ground and the connection point between the secondary winding 25, diode Dl and comparator 42.
- circuits and preferably the diode Dl, the switch 45, the current source 43, the comparator 42 and the control unit 12 can in an ASIC 44 and in a Application-specific Integrated Circuit integrated.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810016752 DE102008016752A1 (en) | 2008-03-31 | 2008-03-31 | Detection of the occupation of a connection of a control gear for lamps |
PCT/EP2009/002187 WO2009121508A1 (en) | 2008-03-31 | 2009-03-25 | Detection of the assignment of a terminal of an operating device for illumination means |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2263421A1 true EP2263421A1 (en) | 2010-12-22 |
EP2263421B1 EP2263421B1 (en) | 2015-01-14 |
Family
ID=40802135
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09726705.8A Active EP2263421B1 (en) | 2008-03-31 | 2009-03-25 | Recognition of the configuration of a connection of an illumination means operating device |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2263421B1 (en) |
CN (1) | CN101982017B (en) |
DE (1) | DE102008016752A1 (en) |
WO (1) | WO2009121508A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012008502A1 (en) * | 2012-04-26 | 2013-10-31 | Tridonic Gmbh & Co. Kg | Operating device for a light bulb and method |
CN108233738B (en) | 2016-12-22 | 2020-11-17 | 赤多尼科两合股份有限公司 | Voltage conversion device |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1916398U (en) * | 1963-02-27 | 1965-05-26 | Siemens Ag | INVERTER EQUIPPED WITH A SWITCHING DEVICE FOR OPERATING FLUORESCENT LAMPS FROM AN AC MAINS OR FROM A DC SOURCE. |
FR2070638A5 (en) * | 1969-12-11 | 1971-09-10 | Compteurs Comp D | |
US4314200A (en) * | 1977-09-01 | 1982-02-02 | Bbc Brown, Boveri & Company Limited | Method and apparatus for detection of magnetization |
JP2557527B2 (en) * | 1989-07-31 | 1996-11-27 | 株式会社東芝 | Light core break detector |
SE468189B (en) * | 1991-03-27 | 1992-11-16 | Asea Brown Boveri | METHOD FOR DETECTING Saturation with AC Transformers AND DETECTOR FOR IMPLEMENTATION OF THESE METHOD |
DE19711183A1 (en) * | 1997-03-18 | 1998-09-24 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Method and circuit arrangement for operating at least one discharge lamp |
US6072284A (en) * | 1998-07-20 | 2000-06-06 | Duro-Test Corporation | Three-way compact fluorescent lamp ballast and lamp holder incorporating same |
DE19923945A1 (en) * | 1999-05-25 | 2000-12-28 | Tridonic Bauelemente | Electronic ballast for at least one low-pressure discharge lamp |
US6628091B2 (en) * | 2001-05-29 | 2003-09-30 | Koninklijke Philips Electronics N.V. | Electronic switch for a bi-level fluorescent lamp fixture |
JP2003249392A (en) * | 2002-02-22 | 2003-09-05 | Mitsubishi Electric Corp | Discharge lamp lighting device |
JP4279033B2 (en) * | 2003-04-07 | 2009-06-17 | 三菱電機株式会社 | Discharge lamp lighting device for in-vehicle headlights |
DE20310123U1 (en) * | 2003-07-02 | 2003-09-18 | Liehr Gerhard | Device - module is for installation in lights with luminous material lamps 58W or 36W, comprises current choke with tapping arrangement for lowering lamp current |
US7109668B2 (en) * | 2003-10-30 | 2006-09-19 | I.E.P.C. Corp. | Electronic lighting ballast |
TW200733811A (en) * | 2005-11-01 | 2007-09-01 | Koninkl Philips Electronics Nv | Configurable ballast |
-
2008
- 2008-03-31 DE DE200810016752 patent/DE102008016752A1/en not_active Withdrawn
-
2009
- 2009-03-25 CN CN200980111787.6A patent/CN101982017B/en not_active Expired - Fee Related
- 2009-03-25 EP EP09726705.8A patent/EP2263421B1/en active Active
- 2009-03-25 WO PCT/EP2009/002187 patent/WO2009121508A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2009121508A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2009121508A1 (en) | 2009-10-08 |
CN101982017A (en) | 2011-02-23 |
CN101982017B (en) | 2015-03-18 |
EP2263421B1 (en) | 2015-01-14 |
DE102008016752A1 (en) | 2009-10-01 |
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