CN105744709A - Xenon lamp decoding circuit - Google Patents
Xenon lamp decoding circuit Download PDFInfo
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- CN105744709A CN105744709A CN201410747900.2A CN201410747900A CN105744709A CN 105744709 A CN105744709 A CN 105744709A CN 201410747900 A CN201410747900 A CN 201410747900A CN 105744709 A CN105744709 A CN 105744709A
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- input
- decoding circuit
- circuit
- xenon lamp
- electrochemical capacitor
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- 229910052724 xenon Inorganic materials 0.000 title claims abstract description 41
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 239000003990 capacitor Substances 0.000 claims abstract description 51
- 229910052736 halogen Inorganic materials 0.000 claims description 8
- 150000002367 halogens Chemical class 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 abstract 2
- 239000003792 electrolyte Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
The invention discloses a xenon lamp decoding circuit, and the circuit comprises an analog circuit, a filtering circuit, and an input circuit. The analog circuit is connected with the input end of a decoding circuit, and the input circuit is connected with the output end of the decoding circuit. The filtering circuit is connected with the analog circuit and the input circuit. When the input end of the decoding circuit is not connected electrically, the analog circuit is in a switch-off state. When the input end of the decoding circuit is connected electrically, the input end of the decoding circuit charges a capacitor in the input circuit. After the input end of the decoding circuit is electrically connected for a preset time period, the analog circuit is switched off, and the input end of the decoding circuit stops the charging of the capacitor in the input circuit. The circuit enables the instant charging of an electrolytic capacitor in the decoding circuit and the switching time of an electronic ballast to be separated through the time delay of a relay, and eliminates the peak current, and solves a problem that the electromagnetic interference is severe during the starting of a xenon lamp.
Description
Technical field
The present invention relates to field of photoelectric technology, particularly to a kind of xenon lamp decoding circuit.
Background technology
Along with electronic equipment is in the extensive use of automotive field, the function of the electronic equipment in automobile gets more and more, the data communication of electric room is also more and more frequent, make BCM (BodyControlModule, car body control module) control object increasing, the integrated level of BCM also gradually steps up, and the requirement of EMC (ElectromagneticCompatibility, Electro Magnetic Compatibility) is also more and more higher.
Vehicular light control module in BCM mainly adopts the modes such as measure loop, power and electric current to detect headlight, and former car light is usually Halogen light, and Halogen light is linear impedance load；And xenon lamp is nonlinear load, and the circuit of electronic ballast of xenon lamp is complicated, the electrical parameter of coupling Halogen light it is difficult under different duties, therefore, in prior art, when using xenon lamp replacing halogen lamp as the headlight of automobile, the electric ballast of xenon lamp installs decoding circuit additional, and this decoding circuit comprises jumbo electrochemical capacitor be filtered.But, when input switch, due to big capacity electrolyte capacitor parallel connection in the loop, the input capacitance of the electric ballast of xenon lamp is bigger, make to input the peak current opening moment very big, and then causing that the electromagnetic interference of whole xenon lamp is serious, other in interference BCM control module, even burn out the vehicular light control module in BCM.
Summary of the invention
The invention provides a kind of xenon lamp decoding circuit, to solve the defect that in prior art, xenon lamp electromagnetic interference is serious.
The invention provides a kind of xenon lamp decoding circuit, including analog loopback, filter circuit and input circuit, described analog loopback is connected with the input of described decoding circuit, described input circuit is connected with the outfan of described decoding circuit, and described filter circuit is connected with described analog loopback and described input circuit respectively；When the input of described decoding circuit is not powered on, described analog loopback is in closure state；After the input of described decoding circuit is energized, the electric capacity in described input circuit is charged by the input of described decoding circuit；After the input of described decoding circuit is energized preset duration, described analog loopback disconnects, and the input of described decoding circuit stops the electric capacity in described input circuit is charged.
Alternatively, described filter circuit converts direct current supply to for being powered by the square wave from described input, absorbs the interference that the high pressure of electric ballast lighting moment produces.
Alternatively, the input of described decoding circuit includes positive input terminal and negative input end, described analog loopback includes single-pole double-throw relay and the second resistance, described positive input terminal is connected with the common port of described single-pole double-throw relay, described negative input end is connected with described second resistance, and described second resistance is also connected with the normal-closed end of described single-pole double-throw relay K.
Alternatively, when the input of described decoding circuit is not powered on, described second resistance, the input of described decoding circuit, the normal-closed end of described single-pole double-throw relay and common port constitute dynamic measure loop, for simulating the impedance operator of Halogen light.
Alternatively, after the input of described decoding circuit is energized, electric capacity in described input circuit is charged by the input of described decoding circuit by the first resistance, and described first resistance R1 is connected with the normally opened end of described positive input terminal and described single-pole double-throw relay respectively.
Alternatively, the electric capacity in described input circuit includes the first electrochemical capacitor and the second electrochemical capacitor, described first electrochemical capacitor and described second electrochemical capacitor and is connected with positive output end and the negative output terminal of described decoding circuit all simultaneously.
Alternatively, after the input of described decoding circuit is energized preset duration, described single-pole double-throw relay action, switch jumps to normally opened end, described analog loopback disconnects, and the input of described decoding circuit stops described first electrochemical capacitor and described second electrochemical capacitor charging.
Alternatively, described filter circuit includes the first filter capacitor, the second filter capacitor, commutation diode and magnet ring wire, described first filter capacitor, described second filter capacitor and described magnet ring wire are in parallel, the positive pole of described commutation diode is connected with the positive output end of described decoding circuit, and negative pole is connected with described second filter capacitor and described magnet ring wire.
Alternatively, described filter circuit converts direct current supply to for being powered by the square wave of the input from described decoding circuit, absorbs the interference that the high pressure of electric ballast lighting moment produces；Described commutation diode plays reversal connection effect, and after preventing described input power-off, the remaining electricity of electrochemical capacitor is back to described input simultaneously.
Present invention also offers a kind of xenon lamp, including fluorescent tube, electric ballast and described xenon lamp decoding circuit, described fluorescent tube is connected with described electric ballast, and described electric ballast is connected with the outfan of described xenon lamp decoding circuit.
The action delay of relay that utilizes xenon lamp decoding circuit in the present invention stagger the electrochemical capacitor momentary charge in decoding circuit and electric ballast switch time, eliminate peak current, the electric current that electrochemical capacitor charging produces when switching with electric ballast is avoided to superpose, while adopting big capacity electrolyte capacitor, realize low current start, solve the problem that xenon lamp electromagnetic interference is serious, improve the versatility of decoding circuit.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of xenon lamp decoding circuit in the embodiment of the present invention；
Fig. 2 is the schematic diagram of a kind of xenon lamp decoding circuit in the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
Embodiments provide a kind of xenon lamp decoding circuit, as it is shown in figure 1, include analog loopback, filter circuit and input circuit, analog loopback is connected with the input of decoding circuit, input circuit is connected with the outfan of decoding circuit, and filter circuit is connected with analog loopback and input circuit respectively.When the input of decoding circuit is not powered on, analog loopback is in closure state, for simulating the impedance operator of Halogen light.After the input of decoding circuit is energized, the electric capacity in input circuit is charged by the input of decoding circuit, and the impedance of input circuit is relatively big, and the electric ballast being connected with the outfan of decoding circuit cannot work.After the input of decoding circuit is energized preset duration, analog loopback disconnects, and the input of decoding circuit stops the electric capacity in input circuit is charged, and the impedance of input circuit is less, and the electric ballast being connected with the outfan of decoding circuit is started working.Square wave from input is powered and is converted direct current supply to by the filter circuit between analog loopback and input circuit, absorbs the interference that the high pressure of electric ballast lighting moment produces.
As shown in Figure 2, schematic diagram for above-mentioned xenon lamp decoding circuit, the input of decoding circuit includes positive input terminal 12V+ and negative input end GND, analog loopback includes single-pole double-throw relay K and the second resistance R2, the common port of the positive input terminal 12V+ and single-pole double-throw relay K of decoding circuit is connected, the negative input end GND and the second resistance R2 of decoding circuit connects, and the second resistance R2 is also connected with the normal-closed end of single-pole double-throw relay K.
When the input of decoding circuit is not powered on, second resistance R2, the input of decoding circuit, the normal-closed end of single-pole double-throw relay K and common port constitute dynamic measure loop, the simulation Halogen light impedance operator when BCM dynamically detects, the pulse signal dynamically used during detection is not enough so that single-pole double-throw relay K action.After the input of decoding circuit is energized, the electric capacity in input circuit is charged by the input of decoding circuit by the first resistance R1.Wherein, the first resistance R1 is connected with the normally opened end of the positive input terminal 12V+ and single-pole double-throw relay K of decoding circuit respectively.Electric capacity in input circuit includes the first electrochemical capacitor C3 and the second electrochemical capacitor C4, the first electrochemical capacitor C3 and the second electrochemical capacitor C4 and is connected with the positive output end 12V+ and negative output terminal 12V of decoding circuit all simultaneously.Now, the impedance of the first electrochemical capacitor C3 and the second electrochemical capacitor C4 is relatively big, cannot work with the positive output end 12V+ of decoding circuit and the negative output terminal 12V electric ballast being connected.
After the input of decoding circuit is energized preset duration, single-pole double-throw relay K action, switch jumps to normally opened end, analog loopback disconnects, the input of decoding circuit stops the first electrochemical capacitor C3 and the second electrochemical capacitor C4 is charged, the impedance of the first electrochemical capacitor C3 and the second electrochemical capacitor C4 is less, and electric ballast is started working.
In addition, filter circuit includes the first filter capacitor C1, the second filter capacitor C2, commutation diode D and magnet ring wire L, first filter capacitor C1, the second filter capacitor C2 and magnet ring wire L are in parallel, the positive pole of commutation diode D is connected with the positive output end 12V+ of decoding circuit, and negative pole and the second filter capacitor C2 and magnet ring wire L are connected.Above-mentioned filter circuit converts direct current supply to for being powered by the square wave from input, absorbs the interference that the high pressure of electric ballast lighting moment produces.Commutation diode D plays reversal connection effect, and after preventing input power-off, the remaining electricity of electrochemical capacitor is back to input simultaneously.
The action delay of relay that utilizes xenon lamp decoding circuit in the embodiment of the present invention stagger the electrochemical capacitor momentary charge in decoding circuit and electric ballast switch time, eliminate peak current, the electric current that electrochemical capacitor charging produces when switching with electric ballast is avoided to superpose, while adopting big capacity electrolyte capacitor, realize low current start, solve the problem that xenon lamp electromagnetic interference is serious, improve the versatility of decoding circuit.
It should be noted that, based on above-mentioned xenon lamp decoding circuit, the embodiment of the present invention additionally provides a kind of xenon lamp, including fluorescent tube, electric ballast and above-mentioned xenon lamp decoding circuit, fluorescent tube is connected with electric ballast, and electric ballast is connected with the outfan of above-mentioned xenon lamp decoding circuit.
The above; being only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope that the invention discloses; change can be readily occurred in or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with scope of the claims.
Claims (10)
1. an xenon lamp decoding circuit, it is characterized in that, including analog loopback, filter circuit and input circuit, described analog loopback is connected with the input of described decoding circuit, described input circuit is connected with the outfan of described decoding circuit, and described filter circuit is connected with described analog loopback and described input circuit respectively；When the input of described decoding circuit is not powered on, described analog loopback is in closure state；After the input of described decoding circuit is energized, the electric capacity in described input circuit is charged by the input of described decoding circuit；After the input of described decoding circuit is energized preset duration, described analog loopback disconnects, and the input of described decoding circuit stops the electric capacity in described input circuit is charged.
2. xenon lamp decoding circuit as claimed in claim 1, it is characterised in that described filter circuit converts direct current supply to for being powered by the square wave from described input, absorbs the interference that the high pressure of electric ballast lighting moment produces.
3. xenon lamp decoding circuit as claimed in claim 1, it is characterized in that, the input of described decoding circuit includes positive input terminal and negative input end, described analog loopback includes single-pole double-throw relay and the second resistance, described positive input terminal is connected with the common port of described single-pole double-throw relay, described negative input end is connected with described second resistance, and described second resistance is also connected with the normal-closed end of described single-pole double-throw relay K.
4. xenon lamp decoding circuit as claimed in claim 3, it is characterized in that, when the input of described decoding circuit is not powered on, described second resistance, the input of described decoding circuit, the normal-closed end of described single-pole double-throw relay and common port constitute dynamic measure loop, for simulating the impedance operator of Halogen light.
5. xenon lamp decoding circuit as claimed in claim 3, it is characterized in that, after the input of described decoding circuit is energized, electric capacity in described input circuit is charged by the input of described decoding circuit by the first resistance, and described first resistance R1 is connected with the normally opened end of described positive input terminal and described single-pole double-throw relay respectively.
6. xenon lamp decoding circuit as claimed in claim 5, it is characterized in that, electric capacity in described input circuit includes the first electrochemical capacitor and the second electrochemical capacitor, described first electrochemical capacitor and described second electrochemical capacitor and is connected with positive output end and the negative output terminal of described decoding circuit all simultaneously.
7. xenon lamp decoding circuit as claimed in claim 6, it is characterized in that, after the input of described decoding circuit is energized preset duration, described single-pole double-throw relay action, switch jumps to normally opened end, described analog loopback disconnects, and the input of described decoding circuit stops described first electrochemical capacitor and described second electrochemical capacitor charging.
8. xenon lamp decoding circuit as claimed in claim 1, it is characterized in that, described filter circuit includes the first filter capacitor, the second filter capacitor, commutation diode and magnet ring wire, described first filter capacitor, described second filter capacitor and described magnet ring wire are in parallel, the positive pole of described commutation diode is connected with the positive output end of described decoding circuit, and negative pole is connected with described second filter capacitor and described magnet ring wire.
9. xenon lamp decoding circuit as claimed in claim 8, it is characterised in that described filter circuit converts direct current supply to for being powered by the square wave of the input from described decoding circuit, absorbs the interference that the high pressure of electric ballast lighting moment produces；Described commutation diode plays reversal connection effect, and after preventing described input power-off, the remaining electricity of electrochemical capacitor is back to described input simultaneously.
10. an xenon lamp, it is characterized in that, including fluorescent tube, electric ballast and xenon lamp decoding circuit as claimed in any one of claims 1-9 wherein, described fluorescent tube is connected with described electric ballast, and described electric ballast is connected with the outfan of described xenon lamp decoding circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410747900.2A CN105744709A (en) | 2014-12-08 | 2014-12-08 | Xenon lamp decoding circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410747900.2A CN105744709A (en) | 2014-12-08 | 2014-12-08 | Xenon lamp decoding circuit |
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| Publication Number | Publication Date |
|---|---|
| CN105744709A true CN105744709A (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410747900.2A Pending CN105744709A (en) | 2014-12-08 | 2014-12-08 | Xenon lamp decoding circuit |
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| CN (1) | CN105744709A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111954338A (en) * | 2019-04-30 | 2020-11-17 | 朗德万斯有限责任公司 | Driver circuit, lamp and method of resetting a controller of a lighting device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5850177A (en) * | 1997-08-21 | 1998-12-15 | Zimmerman; Michael D. | Anti-lock braking system indicator |
| CN2754979Y (en) * | 2004-11-08 | 2006-02-01 | 重庆宗申技术开发研究有限公司 | Delay controlling circuit of headlight for motorcycle |
| CN102354965A (en) * | 2011-10-14 | 2012-02-15 | 江苏普明商贸有限公司 | Novel surge control circuit |
| CN203331936U (en) * | 2013-05-31 | 2013-12-11 | 佛山肆强科技有限公司 | Decoding circuit for non-halogen lamp serving as automobile lamp |
-
2014
- 2014-12-08 CN CN201410747900.2A patent/CN105744709A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5850177A (en) * | 1997-08-21 | 1998-12-15 | Zimmerman; Michael D. | Anti-lock braking system indicator |
| CN2754979Y (en) * | 2004-11-08 | 2006-02-01 | 重庆宗申技术开发研究有限公司 | Delay controlling circuit of headlight for motorcycle |
| CN102354965A (en) * | 2011-10-14 | 2012-02-15 | 江苏普明商贸有限公司 | Novel surge control circuit |
| CN203331936U (en) * | 2013-05-31 | 2013-12-11 | 佛山肆强科技有限公司 | Decoding circuit for non-halogen lamp serving as automobile lamp |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111954338A (en) * | 2019-04-30 | 2020-11-17 | 朗德万斯有限责任公司 | Driver circuit, lamp and method of resetting a controller of a lighting device |
| CN111954338B (en) * | 2019-04-30 | 2024-05-24 | 朗德万斯有限责任公司 | Driver circuit, lamp and method of resetting a controller of a lighting device |
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Application publication date: 20160706 |
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