CN1905772B - Master-slave control architecture for inverter - Google Patents
Master-slave control architecture for inverter Download PDFInfo
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- CN1905772B CN1905772B CN2005100873719A CN200510087371A CN1905772B CN 1905772 B CN1905772 B CN 1905772B CN 2005100873719 A CN2005100873719 A CN 2005100873719A CN 200510087371 A CN200510087371 A CN 200510087371A CN 1905772 B CN1905772 B CN 1905772B
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- 238000001514 detection method Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The invention discloses a control structure of a countercurrent device, in which, a main control unit that can output many groups of signals with the same phase and the same frequency is set on the single-control circuit board. Many groups of drive units installed in the vice control circuit board separately can be driven simultaneously by the frequency signals. So that a variable voltage output of power input unit can be controlled, and the frequency synchronization of drive power will be realized to maintain uniform brightness effectively.
Description
Technical field
The present invention relates to a kind of master-slave control architecture of inverter, be particularly related to a kind of inverter that is applied to power-actuated discharge lamp, the synchronous electric power that the signal that will organize same phase and same frequency by this inverter is output as equity more drives many group discharge lamps, thus each discharge lamp even brightness purpose of achieve effective control.
Background technology
In the inverter power control technology, No. 6791239 United States Patent (USP) that can once propose with reference to the inventor.In this technology, for traditional circuit of inverter, it has pulse-width modulation control unit (PWM), driver element, voltage transformation unit and drives each discharge lamp (CCFL or EEFL) respectively.In the face of screen size day by day strengthens, the situation that required discharge lamp quantity increases day by day, required electric power also must improve relatively.Therefore, if dispose pulse-width modulation control unit (PWM), driver element, the voltage transformation unit of equivalent according to discharge lamp quantity, the circuit board volume strengthened except causing, configuration makes and be difficult for, discharge lamp also can't reach brightness uniformity because of the interference of lumen degree and electric field each other easily.For this reason, above-mentioned patent has proposed solution, major technique improvement wherein is equivalent driver element and the voltage transformation unit of single pulse-width modulation control unit according to the required driving electric of rear end discharge lamp quantity, the synchronous drive signal of output same phase and same frequency can realize each driver element, voltage transformation unit, and discharge lamp driven in synchronism and realize the purpose of uniform luminance thus.
But, along with the expansion more of screen size, further increasing of required discharge lamp quantity forces circuit board separately to make, at this moment, having single pulse-width modulation control unit respectively on the circuit board of separately design drives many group driver elements, voltage transformation unit, reaches discharge lamp.At this moment, pulse-width modulation control unit on circuit board just must face the inconsistent situation of frequency signal possibility once more respectively, especially shown in US 2004/0155601 A1 U.S. publication, if discharge lamp is arranged with interlace mode, then discharge lamp brightness will be more inhomogeneous.
Summary of the invention
Main purpose of the present invention is to address the aforementioned drawbacks, and for avoiding the existence of this defective, the invention provides a kind of master-slave control architecture of inverter.
Master-slave control architecture according to inverter of the present invention comprises: a master control circuit board, this master control circuit board are provided with the main control unit of the signal of exportable two groups or more same phase and same frequency; One or more sub-control circuit boards, separate setting with this master control circuit board, be respectively equipped with the voltage transformation unit of a driver element and this driver element of electric connection on each sub-control circuit board, this driver element inputs to voltage transformation unit by the frequency signal driven in synchronism of this main control unit output with control electric power, carries out transformation output; One or more discharge lamps electrically connect this voltage transformation unit, and are driven by the transformation output power of this voltage transformation unit.
Therefore, the invention has the advantages that the synchronous electric power that the signal that will organize same phase and same frequency by inverter is output as equity more drives many group discharge lamps, thus each discharge lamp even brightness purpose of achieve effective control.
Description of drawings
Fig. 1 is the circuit box schematic diagram according to first embodiment of the invention.
Fig. 2 is the circuit box schematic diagram according to second embodiment of the invention.
Embodiment
About detailed content of the present invention and technical descriptioon, existing accompanying drawings is as follows:
Seeing also shown in Figure 1ly, is the circuit box schematic diagram of first embodiment of the invention.As shown in the figure, the present invention is a kind of master-slave control architecture of inverter, it mainly has single master control circuit board 10, this master control circuit board 10 is provided with the signal G1 of exportable two groups or more same phase and same frequency, the main control unit 11 of G2, and these main control unit 11 front ends also are equipped with a homophony light unit 12, above-mentioned main control unit 11 and homophony light unit 12 can be PWM controller or IC integrated circuit, the present invention is corresponding to this discharge lamp 40,50 quantity and be provided with one or more sub-control circuit boards 20,30, this sub-control circuit board 20,30 separate setting with this master control circuit board 10, at each sub-control circuit board 20, be respectively equipped with a driver element 21 on 30,31 and one electrically connects this driver element 21,31 voltage transformation unit 22,32, this driver element 21,31 frequency signal G1 by these main control unit 11 outputs, the G2 driven in synchronism is with control electric power input voltage transformation unit 22,32 carry out transformation output, will export the discharge lamp 40 of rear end through the driving electric of transformation to, 50.According to the prior art, above-mentioned voltage transformation unit 22,32 can be made up of one or more transformers, in the present embodiment, with this transformer as piezoelectric transformer, then between this transformer and this driver element 21,31, also be provided with a converting unit for waver or inductance, because the quantity of discharge lamp 40,50 and size are corresponding to the size of the output driving electric of voltage transformation unit 22,32, thereby one or more discharge lamps 40,50 are arranged, and the power drive mode of voltage transformation unit 22,32 and discharge lamp 40,50 also can be single driving or push-pull type drives.In addition; this discharge lamp 40,50 is exported a tube current detection signal 41,51 respectively and it is connect altogether and transfers to this homophony light unit 12; thereby carry out discharge lamp 40,50 and set brightness regulation; and this voltage transformation unit 22,32 is exported a voltage detection signal 221,321 respectively and it is connect altogether transfer to this main control unit 11, thereby carries out line interruption or abnormal condition protection.
In Fig. 2; the block schematic diagram of the circuit of another embodiment is provided; second embodiment compares with first embodiment; an one group of driver element 13 and a voltage transformation unit 14 also can be set on this master control circuit board 10; receive the same phase place of these main control unit 11 outputs and the signal G1 of same frequency synchronously; G2; after carrying out transformation electric power; drive the discharge lamp 60 of rear end; 60 of this discharge lamps same output one tube current detection signals 61 also connect it altogether and to transfer to this homophony light unit 12; thereby carry out discharge lamp 60 and set brightness regulation; and this voltage transformation unit 14 same output one voltage detection signals 141 also connect it altogether and to transfer to this main control unit 11, thereby carry out line interruption or abnormal condition protection.In first embodiment and second embodiment, all can obviously find out, discharge lamp 40 no matter, 50,60 quantity how much, the present invention is corresponding to discharge lamp 40,50,60 quantity, can be separated into a single master control circuit board 10 and a plurality of sub-control circuit board 20,30, master control circuit board 10 and sub-control circuit board 20 thus, 30 volumes need not to strengthen, configuration is also comparatively simple and easy and be convenient to make, and on this master control circuit board 10, adopt single main control unit 11 will organize the signal G1 of same phase and same frequency more, G2 exports each sub-control circuit board 20 synchronously to, driver element 13 on 30,21,31, make each driver element 13,21, but 31 equal synchronous opening/closing control electric power input to this voltage transformation unit 14,22,32.Thus, but voltage transformation unit 14,22,32 driven in synchronism discharge lamps 40,50,60 make all discharge lamps 40,50,60 have uniform brightness under equivalent driven by power state.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. principal and subordinate's control circuit framework of an inverter is characterized in that, comprising:
A master control circuit board, described master control circuit board are provided with the main control unit of the signal of exportable two groups or more same phase and same frequency;
A plurality of sub-control circuit boards, separate setting with described master control circuit board, be respectively equipped with the voltage transformation unit of a driver element and the described driver element of an electric connection on each sub-control circuit board, the frequency signal driven in synchronism that described driver element is exported by described main control unit inputs to voltage transformation unit with control electric power and carries out transformation output;
A plurality of discharge lamps electrically connect described voltage transformation unit, and are driven by the transformation output power of described voltage transformation unit.
2. principal and subordinate's control circuit framework of inverter according to claim 1 is characterized in that, one a group of driver element and a voltage transformation unit also are set on described master control circuit board.
3. principal and subordinate's control circuit framework of inverter according to claim 1 and 2 is characterized in that described voltage transformation unit is made up of one or more transformers.
4. principal and subordinate's control circuit framework of inverter according to claim 3 is characterized in that, described transformer is a piezoelectric transformer, also is provided with a converting unit between then described transformer and the described driver element.
5. principal and subordinate's control circuit framework of inverter according to claim 4 is characterized in that described converting unit can be waver or inductance.
6. principal and subordinate's control circuit framework of inverter according to claim 1 and 2 is characterized in that, described main control unit front end also is connected with a homophony light unit.
7. principal and subordinate's control circuit framework of inverter according to claim 6 is characterized in that, described discharge lamp is exported a tube current detection signal respectively and it is connect altogether and transfers to described homophony light unit.
8. principal and subordinate's control circuit framework of inverter according to claim 1 and 2 is characterized in that, described voltage transformation unit is exported a voltage detection signal respectively and it is connect altogether and transfers to described main control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100873719A CN1905772B (en) | 2005-07-28 | 2005-07-28 | Master-slave control architecture for inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100873719A CN1905772B (en) | 2005-07-28 | 2005-07-28 | Master-slave control architecture for inverter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1905772A CN1905772A (en) | 2007-01-31 |
| CN1905772B true CN1905772B (en) | 2010-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2005100873719A Expired - Fee Related CN1905772B (en) | 2005-07-28 | 2005-07-28 | Master-slave control architecture for inverter |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5914571A (en) * | 1996-09-03 | 1999-06-22 | Delta Power Supply, Inc. | Method for igniting high frequency operated, high intensity discharge lamps |
| US6211623B1 (en) * | 1998-01-05 | 2001-04-03 | International Rectifier Corporation | Fully integrated ballast IC |
| CN1337734A (en) * | 2000-04-28 | 2002-02-27 | 松下电器产业株式会社 | High-voltage discharger lamp, producing method, ignition method and ignition device therefor |
-
2005
- 2005-07-28 CN CN2005100873719A patent/CN1905772B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5914571A (en) * | 1996-09-03 | 1999-06-22 | Delta Power Supply, Inc. | Method for igniting high frequency operated, high intensity discharge lamps |
| US6211623B1 (en) * | 1998-01-05 | 2001-04-03 | International Rectifier Corporation | Fully integrated ballast IC |
| CN1337734A (en) * | 2000-04-28 | 2002-02-27 | 松下电器产业株式会社 | High-voltage discharger lamp, producing method, ignition method and ignition device therefor |
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| Publication number | Publication date |
|---|---|
| CN1905772A (en) | 2007-01-31 |
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Granted publication date: 20100714 Termination date: 20120728 |