CN205336625U - Discharge lamp's control circuit - Google Patents
Discharge lamp's control circuit Download PDFInfo
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- CN205336625U CN205336625U CN201520983929.0U CN201520983929U CN205336625U CN 205336625 U CN205336625 U CN 205336625U CN 201520983929 U CN201520983929 U CN 201520983929U CN 205336625 U CN205336625 U CN 205336625U
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- switch
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- positive pole
- discharge lamp
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Abstract
The utility model discloses a discharge lamp's control circuit includes: the power, the inductance to ally oneself with in the first diode of first switch, the positive pole is connected in discharge lamp, and the negative pole is connected in the positive pole of power, connect in parallel in the second diode of second switch, the negative pole is connected in the positive pole of discharge lamp and first diode, connect in parallel in the third diode of third switch, the positive pole is connected and is connected in the positive pole of power in the inductance negative pole, connect in parallel in the fourth diode of fourth switch, the negative pole is connected in the positive pole of inductance and third diode, the 5th switch is connected in the positive pole of the anodal of second diode and fourth diode, and the 5th switch is through sampling grounding, a control unit connects in the sampling resistor, if the voltage of sampling resistor is greater than a default, the disconnection of the 5th switch, first and fourth switch conduction, second and the disconnection of third switch, if the voltage of sampling resistor is less than the default, the 5th switch conduction, first and fourth switch conduction, second and the disconnection of third switch.
Description
Technical field
This utility model relates to automotive electronic technology, particularly relates to the control circuit of a kind of gas-discharge lamp。
Background technology
At present, automobile is becoming increasingly popular, and car light is one of structure important in automobile, car light can adopt gas-discharge lamp, is generally controlled the opening and closing of gas-discharge lamp by control circuit, but in real work, the control circuit that there is gas-discharge lamp is complicated, the problems such as control circuit element is various。
Utility model content
In view of this, this utility model embodiment provides the control circuit of a kind of gas-discharge lamp, including: gas-discharge lamp；Inductance, is series at described gas-discharge lamp；Power supply, the minus earth of described power supply；First electric capacity, one end ground connection of described first electric capacity, the other end of described electric capacity is connected to the positive pole of described power supply；Second electric capacity, including the first end and the second end, the first end ground connection of described second electric capacity；Charging resistor, the second end of described second electric capacity is connected to the positive pole of described power supply by described charging resistor；Charging diode, the positive pole of described charging diode is connected to the second end of described second electric capacity, and the negative pole of described charging diode is connected to the positive pole of described power supply；First diode, the positive pole of described first diode is connected to described gas-discharge lamp, and the negative pole of described first diode is connected to the positive pole of described power supply；First switch, is parallel to described first diode；Second diode, the negative pole of described second diode is connected to described gas-discharge lamp and the positive pole of described first diode；Second switch, is parallel to described second diode；3rd diode, the positive pole of described 3rd diode is connected to described inductance, and the negative pole of described 3rd diode is connected to the positive pole of described power supply；3rd switch, is parallel to described 3rd diode；4th diode, the negative pole of described 4th diode is connected to described inductance and the positive pole of described 3rd diode；4th switch, is parallel to described 4th diode；5th switch, described 5th switch is connected to the positive pole of described second diode and the positive pole of described 4th diode；Sampling resistor, described 5th switch is by described sampling resistor ground connection；And first control unit, it is connected to described sampling resistor, for detecting the voltage of sampling resistor；Wherein, if the voltage of described sampling resistor is more than a preset value, then the described 5th switching off, described first switch and the 4th switch conduction, described second switch and the 3rd switches off；If the voltage of described sampling resistor is less than described preset value, then described 5th switch conduction, described first switch and the 4th switch conduction, described second switch and the 3rd switches off。
The control circuit of described gas-discharge lamp also includes the second control unit, it is connected to described first switch, second switch, the 3rd switch and the 4th switch, wherein, if the voltage of sampling resistor is more than described preset value, then described second control unit controls described first switch and the 4th switch conduction, and described second control unit controls described second switch and the 3rd and switches off；If the voltage of sampling resistor is less than described preset value, then described second control unit controls described first switch and the 4th switch conduction, and described second control unit controls described second switch and the 3rd and switches off。
The control circuit of described gas-discharge lamp also includes DC/DC transducer, is parallel to described power supply。
In the control circuit of described gas-discharge lamp, described first to the 5th switch is MOSFET field effect transistor。
Described first control unit includes comparator, Logic control module and detecting module, described detecting module is connected to described sampling resistor and described comparator, for the voltage of sampling resistor is transferred to described comparator, described comparator is also attached to described Logic control module, the size of voltage and described preset value for comparing described sampling resistor, and result is exported to described Logic control module, described Logic control module is connected to described 5th switch, if the voltage of sampling resistor is more than described preset value, then described Logic control module control the described 5th switches off；If the voltage of sampling resistor is less than described preset value, then described Logic control module controls described 5th switch conduction。
The control circuit of gas-discharge lamp of the present utility model is at least up to one of following beneficial effect:
The sampled point of the voltage of the control circuit detecting sampling resistor of gas-discharge lamp of the present utility model has only to 1, control circuit is simplified more, the element of control circuit reduces, improve product yield, also reduce production cost, and the sampled point detecting the voltage of sampling resistor decreases, it is possible to sampling process is more simplified, also improve the precision of detecting, improve the quality of product。
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in this utility model embodiment, below the accompanying drawing used required during embodiment is described is briefly introduced, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings。
Fig. 1 illustrates the structural representation of the control circuit of gas-discharge lamp of the present utility model；
Fig. 2 illustrates the electrical block diagram of the second control unit of the present utility model。
Detailed description of the invention
Below in conjunction with accompanying drawing this utility model made and further illustrating。
Research worker finds, for the control circuit of gas-discharge lamp of automotive lighting it is generally required to arrange sampling resistor, in prior art, generally it is respectively provided with a sampled point at the two ends of sampling resistor to gather the voltage of sampling resistor, namely altogether need to arrange 2 sampled points, so, the control circuit making gas-discharge lamp is excessively complicated, the electronic component of control circuit is also too much, thus it is relatively low to result in the product yield of the control circuit of gas-discharge lamp, and then improve production cost, also make sampling process more loaded down with trivial details, have impact on sampling precision, and then have impact on product quality。
As it is shown in figure 1, the control circuit of a kind of gas-discharge lamp B of this utility model one embodiment, including: gas-discharge lamp B；Inductance L, is series at gas-discharge lamp B；Power supply, the minus earth of power supply；First electric capacity C1, one end ground connection of the first electric capacity C1, the other end of electric capacity is connected to the positive pole of power supply；Second electric capacity C2, including the first end and the second end, the first end ground connection of the second electric capacity C2；Charging resistor 2, second end of the second electric capacity C2 is connected to the positive pole of power supply by charging resistor 2；Charging diode D5, the positive pole of charging diode D5 is connected to second end of the second electric capacity C2, and the negative pole of charging diode D5 is connected to the positive pole of power supply；First diode D1, the positive pole of the first diode D1 is connected to gas-discharge lamp B, and the negative pole of the first diode D1 is connected to the positive pole of power supply；First switch S1, is parallel to the first diode D1；Second diode D2, the negative pole of the second diode D2 is connected to gas-discharge lamp B and the positive pole of the first diode D1；Second switch S2, is parallel to the second diode D2；3rd diode D3, the positive pole of the 3rd diode D3 is connected to inductance L, and the negative pole of the 3rd diode D3 is connected to the positive pole of power supply；3rd switch S3, is parallel to the 3rd diode D3；The negative pole of the 4th diode D4, the 4th diode D4 is connected to the positive pole of inductance L and the three diode D3；4th switch S4, is parallel to the 4th diode D4；5th switch S5, the 5th switch S5 is connected to the positive pole of the second diode D2 and the positive pole of the 4th diode D4；Sampling resistor Rs, the 5th switch S5 is by sampling resistor Rs ground connection；And the first control unit U1, it is connected to sampling resistor Rs, for detecting the voltage of sampling resistor Rs, the first control unit U1 is only connected to sampling resistor Rs by a sampled point S and namely may detect that the voltage of sampling resistor Rs；Wherein, if the voltage of sampling resistor Rs is more than a preset value, then the 5th switch S5 disconnects, and the first switch S1 and the four switchs S4 conducting, and second switch S2 and the three switchs S3 and disconnect；After 5th switch S5 disconnects, the voltage of sampling resistor Rs begins to decline, and when the voltage of sampling resistor Rs drops to less than preset value, then the 5th switch S5 conducting, the first switch S1 and the four switchs S4 conducting, and second switch S2 and the three switchs S3 and disconnect。It should be noted that preset value is not done any restriction by the present embodiment, those skilled in the art can rationally be arranged according to the actual requirements, and the present embodiment does not repeat them here。
Preferably, as shown in Figure 2, the control circuit of gas-discharge lamp B also includes the second control unit U2, it is connected to the first switch S1, second switch S2, the 3rd switch S3 and the four switch S4, wherein, if the voltage of sampling resistor Rs is more than preset value, then the second control unit U2 controls the first switch S1 and the four switch S4 conducting, and the second control unit U2 control second switch S2 and the three switchs S3 and disconnect；If the voltage of sampling resistor Rs is less than preset value, then the second control unit U2 controls the first switch S1 and the four switch S4 conducting, and the second control unit U2 control second switch S2 and the three switchs S3 and disconnect。
Preferably, the control circuit of gas-discharge lamp B also includes DC/DC transducer 1 (also referred to as DC/DC inverter), is parallel to power supply。
Preferably, in the control circuit of gas-discharge lamp B, the first to the 5th switch S5 is MOSFET field effect transistor。
Preferably, first control unit U1 includes comparator (not shown), Logic control module (not shown) and detecting module (not shown), detecting module is only connected to sampling resistor Rs by a sampled point S and namely may detect that the voltage of sampling resistor Rs, detecting module is also attached to comparator, for the voltage of the sampling resistor detected Rs is transferred to comparator, comparator is also attached to Logic control module, the size of voltage and preset value for comparing sampling resistor Rs, and result of the comparison is exported to Logic control module, Logic control module is connected to the 5th switch S5, if the voltage of sampling resistor Rs is more than preset value, then Logic control module controls the 5th switch S5 disconnection；If the voltage of sampling resistor Rs is less than preset value, then Logic control module controls the 5th switch S5 conducting。
Preferably, the second control unit U2 includes but not limited to it is MCU or single-chip microcomputer。
Preferably, gas-discharge lamp B includes but not limited to it is xenon lamp。
In sum, the sampled point of the voltage of the control circuit detecting sampling resistor of gas-discharge lamp of the present utility model has only to 1, control circuit is simplified more, the element of control circuit reduces, and improves product yield, also reduces production cost, and the sampled point detecting the voltage of sampling resistor decreases, the precision of detecting so that sampling process more simplifies, can be also improved, improve the quality of product。
Although having been described for preferred embodiment of the present utility model, but those skilled in the art are once know basic creative concept, then these embodiments can be made other change and amendment。So, claims are intended to be construed to include preferred embodiment and fall into all changes and the amendment of this utility model scope。
Obviously, this utility model can be carried out various change and modification without deviating from spirit and scope of the present utility model by those skilled in the art。So, if these amendments of the present utility model and modification belong within the scope of this utility model claim and equivalent technologies thereof, then this utility model is also intended to comprise these change and modification。
Claims (5)
1. the control circuit of a gas-discharge lamp, it is characterised in that including:
Gas-discharge lamp；
Inductance, is series at described gas-discharge lamp；
Power supply, the minus earth of described power supply；
First electric capacity, one end ground connection of described first electric capacity, the other end of described first electric capacity is connected to the positive pole of described power supply；
Second electric capacity, including the first end and the second end, the first end ground connection of described second electric capacity；
Charging resistor, the second end of described second electric capacity is connected to the positive pole of described power supply by described charging resistor；
Charging diode, the positive pole of described charging diode is connected to the second end of described second electric capacity, and the negative pole of described charging diode is connected to the positive pole of described power supply；
First diode, the positive pole of described first diode is connected to described gas-discharge lamp, and the negative pole of described first diode is connected to the positive pole of described power supply；
First switch, is parallel to described first diode；
Second diode, the negative pole of described second diode is connected to described gas-discharge lamp and the positive pole of described first diode；
Second switch, is parallel to described second diode；
3rd diode, the positive pole of described 3rd diode is connected to described inductance, and the negative pole of described 3rd diode is connected to the positive pole of described power supply；
3rd switch, is parallel to described 3rd diode；
4th diode, the negative pole of described 4th diode is connected to described inductance and the positive pole of described 3rd diode；
4th switch, is parallel to described 4th diode；
5th switch, described 5th switch is connected to the positive pole of described second diode and the positive pole of described 4th diode；
Sampling resistor, described 5th switch is by described sampling resistor ground connection；And
First control unit, is connected to described sampling resistor, for detecting the voltage of sampling resistor；
If the voltage of described sampling resistor is more than a preset value, then the described 5th switching off, described first switch and the 4th switch conduction, described second switch and the 3rd switches off；
If the voltage of described sampling resistor is less than described preset value, then described 5th switch conduction, described first switch and the 4th switch conduction, described second switch and the 3rd switches off。
2. the control circuit of gas-discharge lamp according to claim 1, it is characterised in that also include the second control unit, is connected to described first switch, second switch, the 3rd switch and the 4th switch, wherein,
If the voltage of sampling resistor is more than described preset value, then described second control unit controls described first switch and the 4th switch conduction, and described second control unit controls described second switch and the 3rd and switches off；
If the voltage of sampling resistor is less than described preset value, then described second control unit controls described first switch and the 4th switch conduction, and described second control unit controls described second switch and the 3rd and switches off。
3. the control circuit of gas-discharge lamp according to claim 1, it is characterised in that also include DC/DC transducer, is parallel to described power supply。
4. the control circuit of gas-discharge lamp according to claim 1, it is characterised in that described first to the 5th switch is MOSFET field effect transistor。
5. the control circuit of gas-discharge lamp according to claim 1, it is characterized in that, described first control unit includes comparator, Logic control module and detecting module, described detecting module is connected to described sampling resistor and described comparator, for the voltage of sampling resistor is transferred to described comparator, described comparator is also attached to described Logic control module, the size of voltage and described preset value for comparing described sampling resistor, and result is exported to described Logic control module, described Logic control module is connected to described 5th switch, if the voltage of sampling resistor is more than described preset value, then described Logic control module control the described 5th switches off；If the voltage of sampling resistor is less than described preset value, then described Logic control module controls described 5th switch conduction。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520983929.0U CN205336625U (en) | 2015-12-01 | 2015-12-01 | Discharge lamp's control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520983929.0U CN205336625U (en) | 2015-12-01 | 2015-12-01 | Discharge lamp's control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205336625U true CN205336625U (en) | 2016-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520983929.0U Active CN205336625U (en) | 2015-12-01 | 2015-12-01 | Discharge lamp's control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205336625U (en) |
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2015
- 2015-12-01 CN CN201520983929.0U patent/CN205336625U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 201203 Shanghai City, Pudong New Area China Zuchongzhi Road (Shanghai) Free Trade Zone No. 2388 building 1-2 Patentee after: Koboda technology, Limited by Share Ltd Address before: 201203 Shanghai city Zuchongzhi road Pudong New Area Zhangjiang hi tech Park No. 2388 Patentee before: Keboda Technology Corp. |
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| CP03 | Change of name, title or address |