EP1813019A1 - Betriebsgerät für leuchtmittel, aufweisend einen adaptiven a/d-wandler - Google Patents
Betriebsgerät für leuchtmittel, aufweisend einen adaptiven a/d-wandlerInfo
- Publication number
- EP1813019A1 EP1813019A1 EP05788532A EP05788532A EP1813019A1 EP 1813019 A1 EP1813019 A1 EP 1813019A1 EP 05788532 A EP05788532 A EP 05788532A EP 05788532 A EP05788532 A EP 05788532A EP 1813019 A1 EP1813019 A1 EP 1813019A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- analog
- digital converter
- control
- operating device
- operating
- 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
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
- H05B41/36—Controlling
Definitions
- the present invention relates to an operating device for lighting means, such as an electronic ballast (ECG) for gas discharge lamps, wherein the operating device has a control and / or control unit, the analog, tapped in the device itself operating parameter signals such as lamp current and / or lamp voltage and externally supplied control signals can be supplied, wherein the signals are processed by an analog / digital converter for further processing (implemented).
- ECG electronic ballast
- the invention further relates to a control and / or control unit for use in such a control gear, to a method of operating such a lighting control gear and to a computer software program product for implementing such methods.
- ADC analog / digital converter
- ballast with a digital lamp signal processor for operation control and error detection of the ballast is already known. It is suggested in Fig. 2 that one and the same analog / digital converter (reference numeral 23 in Fig. 2) optionally implement a lamp current or the lamp voltage reproducing analog signal and the digital signal processor can supply.
- WO 2004/030218 A1 proposes that a digital control unit has two control paths, each having an A / D converter.
- one of the two converters has a much higher scanning speed and a lower resolution than the other.
- one is suitable for a fast response, while the other is slowly suitable for changing signals.
- These two A / D converters can thus replace a costly and energy-consuming high-speed / high-resolution A / D converter.
- the invention is based on the point that " by a particularly effective use of an A / D converter, the number of analog components and the necessary analog reference voltages can be used.
- the invention aims in particular at a reduction of the necessary number of those A / D converters, which are necessary for the evaluation of internally tapped operating parameters and / or externally supplied analog control signals such as dimming. Outside this range, a device according to the invention may of course also comprise further comparators ("1-bit A / D converter) or A / D converter.
- an operating device for lighting means in particular an electronic ballast for gas discharge lamps.
- the operating device in this case has a control and / or control unit, the operating parameter signals (including supplied analog control signals) can be supplied, which are implemented by an analog / digital converter.
- At least one characteristic of the analog / digital converter for adaptation to the operating parameter signals which are currently to be converted is (in operation) adjustable.
- At least two different analog operating parameter signals can be fed to the analog / digital converter on the input side in the time-division multiplex method.
- the analog / digital converter can be adjustable for adaptation to these analog operating parameter signals.
- the analog / digital converter may be adjustable in terms of sampling rate and / or resolution.
- pre-defined different combinations of scan speed / resolution to the analog / digital converter (ADC) be selectable '.
- the setting of the analog / digital converter can be done by the control and / or control unit, which can optionally take over the control of the input-side time division multiplex operation of the analog / digital converter.
- a single Anälog / digital converter for the processing of all operating parameter signals and / or externally supplied control signals of the operating device may be provided.
- control and / or control unit may be functionally connected to a memory in which control data are stored.
- the operating device may have an interface for wireless and / or wired programming.
- the figure shows a schematic structure of an inventive Operating device for a lamp load.
- the device according to the invention for lighting means for example, an electronic ballast (ECG) with an input-side RF filter and rectifier 1 be.
- ECG electronic ballast
- the filtered, rectified input-side voltage can then be converted by a step-up converter having a controllable switch 2 and a diode 3 to a higher DC bus voltage 4 compared to the input-side voltage.
- the on / off behavior of the controllable switch 2, which may be a MOSFET, for example, is controlled by a control signal 23 from a control / control unit 12, which will be explained in detail below.
- a storage capacitor 11 is usually provided for smoothing the bus voltage 4.
- the voltage applied to this storage capacitor 11 smoothed bus voltage is converted by an inverter with two controllable switches 5, 6 to a high-frequency AC voltage.
- the high-frequency AC voltage is thereby at the midpoint 7 of the inverter, i. tapped at the connection point between the two switches 5, 6, which are said to be alternately clocked and to be supplied by the control / control unit 12 with correspondingly clocked control signals 24 and 25 respectively.
- the two switches 5, 6 thus form a half-bridge circuit.
- the high-frequency alternating voltage produced at the center tap of the inverter 5, 6 is then fed to a load circuit comprising a series connection of an inductance 8 and a capacitor 9, this series resonance circuit comprising the lighting means, such as For example, the gas discharge lamp 10 is connected in parallel.
- Operating parameter signals are tapped at a plurality of points. These points are marked A through H in the figure. These points represent non-limiting examples. Furthermore, of course, not all potentially possible operating parameter signals must be present in a circuit according to the invention.
- B denotes the bus voltage (DC link voltage).
- C denotes the rectified and filtered input-side mains voltage.
- D denotes the current through the inverter.
- E denotes the midpoint voltage to the inverter.
- H denotes the signal at the interface input 22 as an example of an externally supplied control signal. Furthermore, alternatively or additionally, analog control signals can be supplied from outside.
- At least two different of the above-mentioned operating parameter signals and / or control signals are supplied on the input side to the control and / or control unit 12.
- a time-multiplex module is provided which, depending on a control signal 14 of a central control unit 15 within the control and / or control unit 12 selects that analog operating parameter signal Sl ... S N , which an analog / digital Transducer 17 is to be supplied.
- the analog / digital converter 17 converts the analog operating parameter signal currently selected by the time multiplex module 13 into a digital signal 19 and supplies this to the central control unit 15.
- This central control unit 15 can then process the now digitally present operating parameter signals, for example by means of a control algorithm, and output the correspondingly calculated control signals 23, 24 and 25 as a function of the processing of the digitized operating parameter signals.
- the central control unit 15 can also be provided to set at least one property of the analog / digital converter 17 by means of a drive signal 16.
- an adaptive analog / digital converter 17 is provided The property to be set can be, for example, the scanning speed, the sequence of the scanning and / or the resolution of the analog / digital converter 17.
- tracking ADC Tracking ADC
- a so-called tracking converter can be used as an analog / digital converter, which by increasing or decreasing a digital counter, the current counter reading an analog signal adjacent tracks by the current count again in an analog signal The counter reading is then increased or decreased depending on the sign of the comparison result.
- the measurement sequence of the analog / digital converter 17 is variable.
- the measurement process can be adjusted to the effect that another, short-term measurement is carried out within a running measurement, in order then to continue and conclude the first-mentioned measurement again.
- a constant DC voltage can be measured with high accuracy and low speed, with this brass, ie the A / D conversion and the filtering, another, rapid measurement can be inserted.
- other properties of the analog / digital converter 17 can be adjusted simultaneously with the change of the measuring sequence, in particular the scanning speed and / or the resolution.
- This adjustment of the properties of the A / D converter 17 by the control signal 16 from the central control unit 15 can be selected, in particular, from the type of analog operating parameter signal currently also selected by the central control unit 15 via the time-division multiplex module 13. If this applied operating parameter signal is a relatively slowly changing signal, such as, for example, the intermediate circuit voltage (bus voltage) 4, the control unit 15 can set the A / D converter 17 to a lower sampling rate in order to save energy.
- this applied operating parameter signal is a relatively slowly changing signal, such as, for example, the intermediate circuit voltage (bus voltage) 4
- the control behavior of the central control unit 15 can be predetermined by data in a memory 21.
- predefined combinations of scanning speed / resolution or value combinations of other characteristics of the analogue / digital converter 17 may be provided so that the central control unit 15 determines the appropriate combination of scanning speed / resolution of the A / D depending on the type of operating parameter signal currently being applied and selected - Select converter 17.
- the setting of the properties of the analog / digital converter 17 can also be done depending on the current operating state of the operating device and / or the lighting means.
- ECGs electronic ballasts
- the drive signal 16 for the analog / digital converter 17 can be a signal which reproduces the current operating state or a future operating state to which the analog / digital converter 17 is to be already set in advance.
- control / regulation unit 12 may have a programming interface 22 by means of which the contents of the memory 21 can be written on wirelessly and / or by wire.
- an interface control circuit 27 is provided.
- the interface 22 can also be embodied as a digital or analog signal input, via which, for example, dimming signals or other control commands ("firing" etc.) can be transmitted If, in this case, an analog signal should be present, then the analog can also be present To this extent, this analog signal, for example, transmitted by a bus also constitutes an operating parameter signal in the sense of the present invention.
- control / regulating unit 12 different behaviors of the control / regulating unit 12 may be selected under certain circumstances even after completion of the hardware production by different programming of the memory 21.
- the entire block of the control / control unit denoted by reference numeral 12 can otherwise be embodied as an "embedded system" as an ASIC or as an IC.
- the analog component of an operating device in particular the number of reference voltages, can be reduced.
- the adaptive analog / digital converter according to the present invention may possibly be the only analog component of the circuit provided for operating the lighting means.
- this analog / digital converter could of course be provided, for example, for the functions "Power On” or “Reset”, but not play a role for the actual operation of the light source.
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP10183818.3A EP2278716B1 (de) | 2004-10-21 | 2005-09-29 | Betriebsgerät für Leuchtmittel, einen adaptiven A/D-Wandler aufweisend |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004051387.2A DE102004051387B4 (de) | 2004-10-21 | 2004-10-21 | Betriebsgerät für Leuchtmittel, aufweisend einen adaptiven A/D-Wandler |
| PCT/EP2005/010547 WO2006045399A1 (de) | 2004-10-21 | 2005-09-29 | Betriebsgerät für leuchtmittel, aufweisend einen adaptiven a/d-wandler |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP10183818.3A Division EP2278716B1 (de) | 2004-10-21 | 2005-09-29 | Betriebsgerät für Leuchtmittel, einen adaptiven A/D-Wandler aufweisend |
| EP10183818.3 Division-Into | 2010-09-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1813019A1 true EP1813019A1 (de) | 2007-08-01 |
| EP1813019B1 EP1813019B1 (de) | 2012-11-14 |
Family
ID=35445813
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05788532A Expired - Lifetime EP1813019B1 (de) | 2004-10-21 | 2005-09-29 | Betriebsgerät für leuchtmittel, aufweisend einen adaptiven a/d-wandler |
| EP10183818.3A Expired - Lifetime EP2278716B1 (de) | 2004-10-21 | 2005-09-29 | Betriebsgerät für Leuchtmittel, einen adaptiven A/D-Wandler aufweisend |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP10183818.3A Expired - Lifetime EP2278716B1 (de) | 2004-10-21 | 2005-09-29 | Betriebsgerät für Leuchtmittel, einen adaptiven A/D-Wandler aufweisend |
Country Status (3)
| Country | Link |
|---|---|
| EP (2) | EP1813019B1 (de) |
| DE (1) | DE102004051387B4 (de) |
| WO (1) | WO2006045399A1 (de) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3134104B2 (ja) * | 1991-09-03 | 2001-02-13 | 株式会社日立製作所 | アナログ−デジタル変換装置とインバータシステム及びマイクロコンピュータ |
| US5627536A (en) * | 1994-12-27 | 1997-05-06 | Advanced Micro Devices, Inc. | Multiplexed delta-sigma modulator |
| US6337544B1 (en) * | 1999-12-14 | 2002-01-08 | Philips Electronics North America Corporation | Digital lamp signal processor |
| DE10164242B4 (de) * | 2001-12-27 | 2014-07-03 | Tridonic Gmbh & Co Kg | Elektronisches Vorschaltgerät mit Strombegrenzung bei Leistungsreglung |
| US6674379B1 (en) * | 2002-09-30 | 2004-01-06 | Koninklijke Philips Electronics N.V. | Digital controller with two control paths |
-
2004
- 2004-10-21 DE DE102004051387.2A patent/DE102004051387B4/de not_active Expired - Fee Related
-
2005
- 2005-09-29 EP EP05788532A patent/EP1813019B1/de not_active Expired - Lifetime
- 2005-09-29 EP EP10183818.3A patent/EP2278716B1/de not_active Expired - Lifetime
- 2005-09-29 WO PCT/EP2005/010547 patent/WO2006045399A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2006045399A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1813019B1 (de) | 2012-11-14 |
| DE102004051387B4 (de) | 2019-11-07 |
| EP2278716B1 (de) | 2017-01-04 |
| EP2278716A1 (de) | 2011-01-26 |
| WO2006045399A1 (de) | 2006-05-04 |
| DE102004051387A1 (de) | 2006-04-27 |
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