CN1627878A - Control circuit used in circuit of high strength gas discharge lamp - Google Patents
Control circuit used in circuit of high strength gas discharge lamp Download PDFInfo
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- CN1627878A CN1627878A CN 200310122530 CN200310122530A CN1627878A CN 1627878 A CN1627878 A CN 1627878A CN 200310122530 CN200310122530 CN 200310122530 CN 200310122530 A CN200310122530 A CN 200310122530A CN 1627878 A CN1627878 A CN 1627878A
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Abstract
The invention discloses adjust and control circuit in use for circuit of high intensity discharge (HID) lamp, and for controlling ascend of operating power of HID lamp. When operating power of HID lamp exceeds setting value in advance, the invention makes circuit of HID lamp fall into protection state. Through monitoring device, the invention monitors circuit of HID lamp. Comparing monitored signal with power signal setup in advance as well as safety signal setup in advance, the invention adjusts operating state of HID lamp circuit. That is to say the invention adjusts power of lamp circuit or makes lamp circuit enter into protection state.
Description
Technical field
The present invention relates to lighting circuit, especially relate to a kind of circuit for regulating and controlling that is used for high-intensity gas discharge lamp.
Background technology
High-intensity gas discharge lamp (HID lamp, i.e. High Intensity Discharge lamp) as high-pressure sodium lamp, because of its long-life and high light efficiency enjoy people to favor, is applied in floodlighting and the road lighting widely.
The arc discharge that takes place between two electrodes of HID lamp by discharge lamp makes the filler emission light in the discharge tube.In the use of HID lamp, between the component in the discharge tube (as electrode emission mixture, pipe wall material, seal, sealing materials etc.) some chemical reactions can take place, and electrode is also in continuous loss, the result constantly raises the operating voltage of HID lamp in the operating period.
Adjust under the constant situation of factor at HID circuit for lamp input power, the rising of the operating voltage of HID lamp will cause that the operating power of HID lamp raises, the temperature of HID lamp is raise, conversely, the rising of the temperature of HID lamp can impel the rising of HID light working voltage again, and so the result of circulation will make the life-span of lamp be had a strong impact on.Can't keep when discharge when the HID light working voltage is elevated to power supply, the HID lamp is also just died.On the other hand, higher H ID lamp operating power also makes circuit for lamp be in unsafe operating state, damages circuit for lamp easily.So operating power how to control the HID lamp becomes an important content in the design of HID circuit for lamp.
The measure of traditional control HID lamp operating power generally is to use little process chip, but cost is than higher.Another kind of measure is to limit the operating power of the electric current of HID circuit for lamp with control HID lamp by the special circuit that designs, but the common more complicated of this special circuit.
Therefore, need provide a kind of economical and practical control HID lamp work circuit for regulating and controlling.
Summary of the invention
The invention provides a circuit for regulating and controlling, can remedy deficiency of the prior art.
A circuit for regulating and controlling provided by the invention is used to control the work of HID circuit for lamp, and this circuit for regulating and controlling comprises: a monitoring device is used to monitor the operating power of described HID circuit for lamp, and produces a monitor signal; With a regulation device, this regulation device comprises a comparison means, is used for more described monitor signal and a predetermined signals, and produces a comparative result, wherein, this regulation device is used for the state according to the described HID circuit for lamp of the corresponding regulation and control of this comparative result.The state of regulation and control HID circuit for lamp comprises the operating power of adjustment HID circuit for lamp and the HID circuit for lamp is adjusted to guard mode.
The present invention also provides a ballast, is used to control the work of HID circuit for lamp, and this ballast comprises: an oscillating circuit is used to control the work of described HID circuit for lamp; With a circuit for regulating and controlling, this circuit comprises, a monitoring device, be used to monitor the operating power of described HID circuit for lamp, and producing a monitor signal and a regulation device, this regulation device comprises a comparison means, be used for more described monitor signal and a predetermined signals, and produce a comparative result; Wherein, this regulation device is used for according to the described oscillating circuit of the corresponding regulation and control of this comparative result to control described HID circuit for lamp state.
The present invention also provides a kind of method of the HID of regulation and control circuit for lamp, and this method comprises: the operating power of monitoring HID circuit for lamp, and produce a monitor signal; More described monitor signal and a predetermined signals, and produce a comparative result; With adjust described HID circuit for lamp state according to described comparative result is corresponding
By circuit provided by the invention and method, can effectively control the rising of HID lamp operating power in use, and the HID circuit for lamp can be effectively protected when power surpasses default definite value.
By hereinafter with reference to accompanying drawing to description and claim that the present invention did, other purposes of the present invention and achievement will be apparent, and can comprehensive understanding be arranged to the present invention.
Description of drawings
By embodiment,, the present invention is done further detailed explanation with reference to accompanying drawing.
Fig. 1 is the circuit for regulating and controlling block diagram of the HID of being used for circuit for lamp according to an embodiment of the invention;
Fig. 2 is the circuit for regulating and controlling figure that is used for the HID circuit for lamp according to the embodiment of Fig. 1; With
Fig. 3 is the method flow diagram of regulation and control HID circuit for lamp according to an embodiment of the invention.
In all above-mentioned accompanying drawings, identical label represents to have identical, similar or corresponding feature or function.
Embodiment
Fig. 1 is circuit for regulating and controlling 105 block diagrams of the HID of being used for circuit for lamp 100 according to an embodiment of the invention.Circuit for regulating and controlling 105 comprises an observation circuit 110 and a regulation device 120, and wherein regulation device 120 comprises a comparison means 130.
In the HID lamp course of work, the operating power of 110 pairs of traditional HID circuit for lamp 100 of monitoring device is monitored, and to monitor signal of regulation device 120 outputs.Comparison means 130 in the regulation device 120 compares monitor signal and a predetermined signals of input, and adjusts the state of HID circuit for lamp accordingly according to comparative result.This presets reference signal can comprise one or an above reference signal value as required; as comprise that a HID circuit for lamp need carry out the critical value A (call in the following text and preset power signal) that power is adjusted; or comprise that a HID circuit for lamp need be adjusted to the critical value B of guard mode (call in the following text and preset guard signal), perhaps comprises two predetermined signals A and B simultaneously.
In a preferred embodiment, be used in the comparison means 130 and the monitor signal imported compares presets reference signal and comprise and preset power A and preset safety signal B.When the monitor signal of regulation device 120 receptions surpasses A, device 120 will be adjusted the power of HID circuit for lamp 100 accordingly, and when this monitor signal surpasses B, device 120 will make HID circuit for lamp 105 enter guard mode, and circuit for lamp 100 is quit work.
Fig. 2 is the circuit diagram that circuit for regulating and controlling 105 is used for HID circuit for lamp 100 according to the embodiment of Fig. 1.In the present embodiment, monitoring device 110 comprises a sampling resistor 305 and an inverting amplifier of being made up of resistance 315, resistance 320 and operational amplification circuit 330.Regulation device 120 comprises comparison means, a comparison means that comprises Zener diode 375 and the protective device that comprises thyristor 380 be made up of resistance 340, resistance 345 and operational amplification circuit 350.
In the HID lamp course of work, the input voltage of HID circuit for lamp 100 is fixed, so the electric current of the sampling resistor 305 in the monitoring device 110 of flowing through can reflect the power consumption of HID circuit for lamp 100, and can and then reflect the operating power that is connected on the HID lamp in the circuit for lamp, so, can monitor the power of HID circuit for lamp 105 through the electric current of sampling resistor 305 by monitoring stream.
When the HID lamp is worked, the electric current of sampling resistor 305 of flowing through is a high-frequency DC stream, because the filter action of electric capacity 310, produce a mean value voltage signal at node P1, this voltage signal is input to the inverting amplifier of being made up of resistance 315, resistance 320 and operational amplification circuit 330 and carries out anti-phase amplification, exports a monitor signal VS.
VS is input in the comparison means in the regulation device 120, and this comparison means is made up of resistance 340, resistance 345 and operational amplification circuit 350, and it compares the voltage VP2 (promptly presetting power signal A) of VS and node P2.VP2 can determine by adjusting the reference voltage Vref and the resistance R340 of resistance 340 and the resistance R345 of resistance 345.
Usually, when starting, the power of HID lamp is lower, increases to operate as normal power then gradually.In this process, VS is also thereupon by the low normal value that is increased to gradually.When VS was lower than VP2, the output voltage V out of operational amplification circuit 350 was near zero volt.If VS surpasses VP2, Vout=((VS-Vref) (R345/R340)+VS), and will increase along with the increase of VS so.
As Vout during greater than the voltage of node P3, Vout will adjust the operating power of HID circuit for lamp 100 by voltage controlled oscillator 365.If Vout surpasses the conducting voltage (presetting guard signal B) of Zener diode 375; so conducting Zener diode 375 is also followed conducting thyristor 380; thereby make lose the job voltage (even VDD near zero volt) and can not working of voltage controlled oscillator 365 and half-bridge driver 385, the result will make whole HID circuit for lamp quit work and enter guard mode.
In the present embodiment, with preset signal that guard signal B compares be monitor signal VS and preset power signal A relatively after the comparative result of output.When enforcement is of the present invention, also can and presets guard signal and directly compare, with the state of control circuit for lamp with monitor signal.
HID circuit for lamp 100 is traditional HID circuit for lamp, circuit provided by the invention can be combined in and form a HID circuit for lamp in this traditional circuit.In concrete enforcement, also circuit provided by the invention can be combined in the traditional ballast in addition.
Fig. 3 is the method flow diagram of a regulation and control HID circuit for lamp according to an embodiment of the invention.In the HID lamp course of work, monitoring lamp circuit power (step S310), and produce a monitor signal.Relatively this monitor signal and one preset power signal (step S320).Preset power signal if this monitor signal surpasses this, judge then whether this monitor signal surpasses one and preset guard signal (step S330), presets guard signal if surpass this, then circuit for lamp is arranged on guard mode (step S340).
If this monitor signal surpasses and describedly to preset power signal and surpass the described guard signal that presets; adjust circuit for lamp power (step S350) so; circuit for lamp is worked in the power bracket that allows, and lasting repeating step S310, S320 and S330.If this monitor signal is no more than the described power signal that presets, then repeating step S310 and S320.
By Method and circuits provided by the invention, the operating power of HID lamp can be controlled preferably and when operating power surpassed certain value, circuit for lamp entered guard mode automatically.The present invention is simple, economy with low cost.
More than though the present invention has been described in conjunction with the embodiments, clearly make according to content described above and multiplely substitute, revise and variation is conspicuous for those skilled in the art, therefore, all so alternative, modifications and variations all should fall among the spirit and scope of claim of the present invention.
Claims (12)
1. a circuit for regulating and controlling is used to control the work of a high-intensity gas discharge lamp (HID) circuit for lamp, and this circuit for regulating and controlling comprises:
A monitoring device is used to monitor the operating power of described HID circuit for lamp, and produces a monitor signal; With
A regulation device comprises:
A comparison means is used for more described monitor signal and a predetermined signals, and produces a comparative result;
Wherein, this regulation device is used for the state according to the described HID circuit for lamp of the corresponding regulation and control of this comparative result.
2. the described circuit for regulating and controlling of claim 1, wherein: described predetermined signals comprises that presets a power signal; Preset power signal if described monitor signal surpasses this, then described regulation device is adjusted the power of described HID circuit for lamp.
3. circuit for regulating and controlling as claimed in claim 1 or 2, wherein: described predetermined signals comprises that presets a guard signal; Preset guard signal if described monitor signal surpasses this, then described regulation device is adjusted described HID circuit for lamp and is entered guard mode.
4. circuit for regulating and controlling as claimed in claim 3, wherein, described guard mode comprises the described HID circuit for lamp state that quits work.
5. circuit for regulating and controlling as claimed in claim 1, wherein: described regulation device compares described comparative result and another predetermined signals; If described comparative result surpasses this another predetermined signals, then described regulation device is adjusted described HID circuit for lamp and is entered guard mode.
6. a ballast is used to control the work of a high-intensity gas discharge lamp (HID) circuit for lamp, and this ballast comprises:
An oscillating circuit is used to control the work of described HID circuit for lamp; With
A circuit for regulating and controlling, this circuit comprises:
A monitoring device is used to monitor the operating power of described HID circuit for lamp, and produce a monitor signal and
A regulation device comprises:
A comparison means is used for more described monitor signal and a predetermined signals, and produces a comparative result;
Wherein, this regulation device is used for according to the described oscillating circuit of the corresponding regulation and control of this comparative result to control described HID circuit for lamp state.
7. ballast as claimed in claim 6, wherein: described predetermined signals comprises that presets a power signal; Preset power signal if described monitor signal surpasses this, then described regulation device is adjusted the power of described HID circuit for lamp.
8. as claim 6 or 7 described ballasts, wherein: described predetermined signals comprises that presets a guard signal; Preset guard signal if described monitor signal surpasses this, then described regulation device is adjusted described HID circuit for lamp and is entered guard mode.
9. ballast as claimed in claim 6, wherein, the described regulation device of described regulation device compares described comparative result and another predetermined signals; If described comparative result surpasses this another predetermined signals, then described regulation device is adjusted described HID circuit for lamp and is entered guard mode.
10. the method for a regulation and control high-intensity gas discharge lamp (HID) circuit for lamp work comprises:
The operating power of monitoring HID circuit for lamp, and produce a monitor signal;
More described monitor signal and a predetermined signals, and produce a comparative result; With
According to the described HID circuit for lamp state of the corresponding adjustment of described comparative result.
11. method as claimed in claim 10, wherein: described predetermined signals comprises that presets a power signal; Preset power signal if described monitor signal surpasses this, then adjust the power of described HID circuit for lamp.
12. as claim 10 or 11 described methods, wherein: described predetermined signals comprises that presets a guard signal; Preset guard signal if described monitor signal surpasses this, then adjust described HID circuit for lamp and enter guard mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310122530 CN1627878A (en) | 2003-12-10 | 2003-12-10 | Control circuit used in circuit of high strength gas discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310122530 CN1627878A (en) | 2003-12-10 | 2003-12-10 | Control circuit used in circuit of high strength gas discharge lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1627878A true CN1627878A (en) | 2005-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310122530 Pending CN1627878A (en) | 2003-12-10 | 2003-12-10 | Control circuit used in circuit of high strength gas discharge lamp |
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| CN (1) | CN1627878A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102573252A (en) * | 2011-12-30 | 2012-07-11 | 宁波特尔普光电有限公司 | HID (High Intensity Discharge) electronic ballast |
| CN101647322B (en) * | 2007-03-28 | 2013-01-09 | 三多尼克爱特克两合股份有限公司 | Digital control circuit of an operating device for lamps |
-
2003
- 2003-12-10 CN CN 200310122530 patent/CN1627878A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101647322B (en) * | 2007-03-28 | 2013-01-09 | 三多尼克爱特克两合股份有限公司 | Digital control circuit of an operating device for lamps |
| CN102573252A (en) * | 2011-12-30 | 2012-07-11 | 宁波特尔普光电有限公司 | HID (High Intensity Discharge) electronic ballast |
| CN102573252B (en) * | 2011-12-30 | 2014-06-04 | 宁波特尔普光电有限公司 | HID (High Intensity Discharge) electronic ballast |
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