CN201616949U - Control system of high-strength discharge lamp - Google Patents
Control system of high-strength discharge lamp Download PDFInfo
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- CN201616949U CN201616949U CN2010200467980U CN201020046798U CN201616949U CN 201616949 U CN201616949 U CN 201616949U CN 2010200467980 U CN2010200467980 U CN 2010200467980U CN 201020046798 U CN201020046798 U CN 201020046798U CN 201616949 U CN201616949 U CN 201616949U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
Abstract
The utility model discloses a control system of a high-strength discharge lamp. The control system comprises a power supply unit for supplying power and a high-voltage igniting unit, the high-strength discharge lamp is electrically connected with the high-strength discharge lamp and the power supply unit and used for supplying voltage for the high-strength discharge lamp, and the power supply unit consists of a filter circuit which filters power provided by the power supply unit. The control system can increase anti-interference performance of the high-strength discharge lamp.
Description
Technical field
The utility model relates to the communications field, in particular to a kind of control system of high-intensity discharge lamp.
Background technology
High-intensity discharge lamp (High Intensity Discharge abbreviates HID as) also claims high-intensity discharge lamp or high-voltage gas discharging light.At present common HID lamp mainly contains three kinds, i.e. mercury (steam) lamp, sodium vapor lamp and metal halide lamp, and wherein sodium vapor lamp divides low-pressure sodium lamp (LowPressure Sodium abbreviates LPS as) and high-pressure sodium lamp (High Pressure Sodium abbreviates HPS as) again.At present many with metal halide and charge into the high-intensity gas discharge lamp of xenon on the automobile.This new automobile illumination headlight that contains xenon claims that again (Chinese is called for short: xenon lamp) for high-intensity discharge lamp or gas discharge type vehicle xenon lighting headlight system.Xenon lamp brightness is big, and the light tone and the sunlight that send are more approaching, and consumed power is low, and the reliability height is not subjected to voltage influence of fluctuations on the car, has increased substantially the visibility of driving at night.At present, have only trendy luxury car just to dispose and used this novel headlight.This lamp adopts high-tech that xenon is poured in the quartz ampoule, sees through accurate high voltage package again 12V electricity moment is increased to 23000V, excites xenon in the pipe by high-tension electricity, produces a branch of superpower high colour temperature arclight at two interpolars.Make luminous efficiency and brightness improve 3 times, the life-span use has improved 10 times, and is similar with automotive service life.The HID lamp is described as revolutionary automotive lighting product of 21st century, and the HID xenon lamp replaces the trend of the times that traditional Halogen lamp LED will be automobile and even lighting field development.
Existing automotive HID xenon lamp control system, the stable ignition of xenon lamp, power control are as one wishes not to the utmost in the processing of cold and hot lamp under different voltages.Have following problem simultaneously: loss and heating are bigger, and efficient is lower; Adaptability is relatively poor under the different voltages; Relatively poor at different lamp adaptability.
Problem at high-intensity discharge lamp in the correlation technique tends to be interfered does not propose effective solution at present as yet.
The utility model content
At high-intensity discharge lamp relatively poor problem of adaptability and propose the utility model under different voltages, for this reason, main purpose of the present utility model is to provide a kind of control system of high-intensity discharge lamp, to address the above problem.
To achieve these goals, according to an aspect of the present utility model, provide a kind of control system of high-intensity discharge lamp.
Control system according to high-intensity discharge lamp of the present utility model comprises: power subsystem provides power supply; The high-tension ignition unit is electrically connected with high-intensity discharge lamp and power subsystem, for the high-intensity discharge lamp igniting provides voltage; Wherein, power subsystem comprises filter circuit, and the power supply that power subsystem is provided carries out Filtering Processing.
Preferably, this system also comprises: boosting unit, be connected with the high-tension ignition unit with power subsystem, and the voltage that power subsystem the is provided processing of boosting, and the voltage after will boosting offers the high-tension ignition unit; Feedback unit is connected with boosting unit, and Voltage Feedback and/or the current feedback relevant with boosting unit is provided; The CPU control unit is connected with feedback unit with boosting unit, controls and drive boosting unit according to Voltage Feedback and/or current feedback that feedback unit provides.
Preferably, this boosting unit comprises: voltage-multiplying circuit, generation is once boosted to power supply.
Preferably, this boosting unit comprises: drive and the locking circuit, when output voltage surpasses predetermined threshold, output voltage is carried out locking.
Preferably, this driving and locking circuit comprise: processing module; The MOS driver element; Comparing unit; Drive triode, wherein, an input of comparing unit is connected to boosting unit via first resistance, and another input is connected to power subsystem via second resistance, and output is connected to the driving triode; An output that drives triode is connected to the MOS driver element, and is connected with central processing unit by the 3rd resistance.
Preferably, this filter circuit comprises: first electric capacity, second electric capacity, the 3rd electric capacity, wiring inductance, and wherein, first electric capacity and wiring inductance series connection constitute the LC filter; Second electric capacity, the 3rd electric capacity and second inductor constitute the ∏ mode filter.
Preferably, the ∏ mode filter is a low pass filter.
Preferably, this system also comprises: full-bridge drives output unit, and the direct voltage that power subsystem is provided is converted to alternating voltage, and alternating voltage is offered high-intensity discharge lamp and high-tension ignition unit.
Preferably, full-bridge drives output unit and comprises: the full-bridge chip for driving is connected to high-intensity discharge lamp and provides full-bridge to drive to it; Protective circuit is connected to full-bridge chip for driving and high-intensity discharge lamp, so that voltage protection to be provided.
Preferably, this power subsystem also comprises: cpu power is connected with central processing unit, for the CPU control unit provides power supply; The MOS driving power drives with the MOS of boosting unit and full-bridge drives output unit and is connected, for the MOS of boosting unit drives and full-bridge driving output unit provides power supply.
Control system according to high-intensity discharge lamp of the present invention comprises: power subsystem provides power supply; The high-tension ignition unit is electrically connected with high-intensity discharge lamp and power subsystem, for the high-intensity discharge lamp igniting provides voltage; Power subsystem comprises filter circuit, and the power supply that power subsystem is provided carries out Filtering Processing, by the present invention, has solved the problem that high-intensity discharge lamp tends to be interfered, and then has reached the effect that strengthens the high-intensity discharge lamp anti-interference.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, constitutes the application's a part, and illustrative examples of the present utility model and explanation thereof are used to explain the utility model, do not constitute improper qualification of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation according to the high-intensity discharge lamp control system of the utility model embodiment;
Fig. 2 is the preferred high strength discharge lamp control system structural representation according to the utility model embodiment;
Fig. 3 is the electric structural representation according to the high-intensity discharge lamp control system of the utility model embodiment;
Fig. 4 is the structural representation according to the driving of the utility model embodiment and locking circuit;
Fig. 5 is the structural representation according to the power filter of the utility model embodiment;
Fig. 6 is the structural representation according to the control system of the preferred high-intensity discharge lamp of the utility model embodiment;
Fig. 7 is the flow chart according to the preferred high-intensity discharge lamp control method of the utility model embodiment;
Fig. 8 is the flow chart according to the preferred high-intensity discharge lamp control method of the utility model embodiment;
Fig. 9 is the schematic diagram according to the preferred voltage modulate circuit of the utility model embodiment;
Figure 10 is the schematic diagram according to the preferred current regulating circuit of the utility model embodiment.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe the utility model below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
According to embodiment of the present utility model, provide a kind of control system of high-intensity discharge lamp.
Fig. 1 is the structural representation according to the high-intensity discharge lamp control system of the utility model embodiment.
As shown in Figure 1, the high-intensity discharge lamp control system comprises: power subsystem 2 and voltage igniting unit 6.
Wherein, power subsystem 2 provides power supply; High-tension ignition unit 6 is electrically connected with high-intensity discharge lamp and power subsystem, for the high-intensity discharge lamp igniting provides voltage.
Preferably, this system also comprises: filter circuit 10.
Wherein, filter circuit 10 is included in the power subsystem 2, and the power supply that power subsystem 2 is provided carries out Filtering Processing.
In the utility model, this system can also comprise: boosting unit, feedback unit and feedback unit.Wherein, boosting unit is connected with the high-tension ignition unit with power subsystem, the voltage that power subsystem the is provided processing of boosting, and the voltage after will boosting offers the high-tension ignition unit; Feedback unit is connected with boosting unit, and Voltage Feedback and/or the current feedback relevant with boosting unit is provided; The CPU control unit is connected with feedback unit with boosting unit, controls and drive boosting unit according to Voltage Feedback and/or current feedback that feedback unit provides.
Wherein, boosting unit can comprise: voltage-multiplying circuit, and generation is once boosted to power supply; The moving locking circuit that reaches when output voltage surpasses predetermined threshold, carries out locking to output voltage.
In the utility model, the control system of the utility model high-intensity discharge lamp can also comprise: full-bridge drives output unit, and the direct voltage that power subsystem is provided is converted to alternating voltage, and alternating voltage is offered high-intensity discharge lamp and high-tension ignition unit.
In the utility model, full-bridge drives output unit and can comprise: the full-bridge chip for driving is connected to high-intensity discharge lamp and provides full-bridge to drive to it; Protective circuit is connected to full-bridge chip for driving and high-intensity discharge lamp, so that voltage protection to be provided.
In the utility model, power subsystem can also comprise: cpu power is connected with central processing unit, for the CPU control unit provides power supply; The MOS driving power drives with the MOS of boosting unit and full-bridge drives output unit and is connected, for the MOS of boosting unit drives and full-bridge driving output unit provides power supply.
Fig. 2 is the preferably high-intensity discharge lamp control system structural representation according to the utility model embodiment.
As shown in Figure 2, CPU element 1 comprises single-chip microcomputer digital signal processor (DigitalSignal Processing abbreviates DSP as) and peripheral circuit, download circuit; Power supply power supply 2 comprises electric source filter circuit, the power supply of single-chip microcomputer and MOS driving power; Feedback unit 3 comprises Voltage Feedback and current feedback; Boosting unit 4 comprises transformer, MOS and drive circuit; Full-bridge output unit 5 comprises full-bridge chip for driving and protective circuit; High-tension ignition unit 6 comprises high-voltage output circuit and charging current limiter resistance; Lamp unit 7 comprises xenon lamp, shielded cable, high voltage package.
Wherein, power subsystem 2 provides the power supply and the MOS driving power of single-chip microcomputer, the voltage and current feedback that CPU element 1 provides according to feedback unit 3, control and driving boosting unit 4, produce the required voltage of full-bridge output unit 5 and high-tension ignition unit 6, full-bridge output unit 5 and high-tension ignition unit 6 drives lamp unit 7, realize xenon lamp igniting, restart and stable operation.
Above-mentioned high-intensity discharge lamp control system comprises Based Intelligent Control and critical conduction mode control model, wherein, Based Intelligent Control comprises CPU element 1, power subsystem 2, feedback unit 3, boosting unit 4 and full-bridge and drives output unit 5, power subsystem 2 produces the power supply of CPU element 1 and full-bridge driving output unit 5, boosting unit 4 produces the input voltage that drives high-tension ignition unit 6 and full-bridge driving output unit 5, and the output that full-bridge drives output unit 5 is used for driving lamp driver element 7.Feedback unit 3 reponse system input voltages, output voltage, output current, CPU element comprises CPU or DSP single-chip microcomputer, CPU element is according to the feedback adjusting intelligent control algorithm of feedback unit 3, output control boosting unit 4 and full-bridge drive output unit 5, CPU control comprises Current Control feedback loop and feedback power control loop, if being in, electric current presets the threshold values maximum level, then the power of current control loop control xenon lamp; If current value is lower than and presets the threshold values maximum level, the power of power control circuit control xenon lamp.The Based Intelligent Control control algolithm can feedback unit 3 the feedback parameter difference, distinguish cold and hot lamp and control in conjunction with different control algolithms.
Above-mentioned Based Intelligent Control also comprises variable frequency control and critical conduction mode control, if current value is lower than and presets the threshold values maximum level, the power of power control circuit control xenon lamp, variable frequency control is according to the feedback of feedback unit 3, draw different control frequencys and other parameter by algorithm, power by power control circuit control xenon lamp, critical conduction mode control realizes soft switch control, feedback according to feedback unit 3, Based Intelligent Control obtains MOS turn-on and turn-off opportunitys, in conjunction with variable frequency control, realize critical conduction mode control.
Preferably, native system comprises connecting line, xenon lamp and the high-tension ignition voltage generation unit of electronic control unit (Electronic Control Unit abbreviates ECU as) controller, connection ECU and xenon lamp.Wherein, the ECU controller comprises direct current (Driect Current abbreviates DC as) boosting unit and input and output feedback unit and central processor unit (Center Processor Unit, abbreviate CPU as) control and with the DC boost conversion for driving interchange (the Alternate Current of high-intensity discharge lamp, abbreviate AC as) the full-bridge switch unit of voltage, the DC boosting unit can be produced by transformer secondary or voltage-multiplying circuit and once boost, and produces ignition voltage by secondary transformer again.The input and output feedback unit comprises the output voltage feedback, output current feedback, input voltage feedback; CPU control and other unit also comprise anti-swash voltage output locking and protected location.
Preferably, the ECU controller has been realized the Based Intelligent Control of HID and the Critical Control of anti exciting converter; Input and output feedback unit and CPU control have realized igniting, burning lamp and the control of permanent power of xenon lamp; CPU control adopts the control of frequency conversion variable duty cycle that loss is reduced, and heating reduces, and electromagnetic interference (Electro Magnetic Interference abbreviates EMI as) reduces, and reduces the EMI number of elements simultaneously.
Preferably, CPU control can be distinguished cold and hot lamp and control in conjunction with different control algolithms, feedback unit 3 detects output voltage, and distinguish cold and hot lamp according to characteristics such as the different voltage of the cold and hot lamp in lamp igniting back, electric currents, in conjunction with the characteristic of lamp starting resistor, starting current, optimize and start sequential, and adopt different control strategies to control, startup, igniting again to adapt to cold and hot lamp realize cold and hot lamp control.The ECU controling appliance has ignition mode, and lamp pattern and stable operation pattern are burnt in preheating.Its controller further comprises preheating mode, the error protection pattern, and thermolamp is ignition mode again, and the high pressure xenon gas lamp is used to automobile.
Preferably, CPU control comprises Current Control feedback loop and feedback power control loop, the feedback power control loop is carried out drawing after the computing through CPU by current feedback loop and voltage feedback loop, presets the threshold values maximum level if electric current is in, then the power of current control loop control xenon lamp; If current value is lower than and presets the threshold values maximum level, the power of power control circuit control xenon lamp.Wherein, error protection comprises the input overvoltage, imports connecting line and xenon lamp open circuit or short circuit under-voltage, xenon lamp; when the feedback of voltage feedback unit, current feedback unit occurs when unusual; can by CPU judge the input overvoltage, the input under-voltage; overcurrent or lamp open circuit, and turn-off output or change control algolithm and protect.
Preferably, the utility model is optimized control to new and old lamp and different lamp, specific implementation is, new and old lamp and different lamps, voltage, electric current difference in igniting back and the lamp warm, at different voltage-current curves, control system adopts different control algolithm control, has realized the Adaptive Control of different lamps and new and old lamp.
Be described in detail below in conjunction with the implementation procedure of example the utility model embodiment.
Fig. 3 is the electric structural representation according to the high-intensity discharge lamp control system of the utility model embodiment.
As shown in Figure 3, filter circuit 10 comprises inductance, electric capacity; MOS drives and locking circuit 11 comprises the MOS chip for driving, drive current-limiting resistance and locking protective circuit; CPU element 12 comprises dsp chip and peripheral circuit; Voltage-multiplying circuit 13 comprises high voltage generation circuit and igniting current-limiting resistance; The electricity structure chart also comprises transformer unit 14, and modulate circuit 15 comprises input voltage Acquisition Circuit, output voltage and current acquisition circuit and operational amplifier modulate circuit; Bridge driver element 16 comprises full-bridge chip for driving and peripheral circuit.
As shown in figures 1 and 3, wherein, boosting unit 4 comprises driving and locking circuit 11, voltage-multiplying circuit 13 and transformer and low side MOS unit 14, drives and locking circuit 11 driving low side MOS, produces booster voltage through transformer; Be feedback unit 3 in the frame of broken lines, be respectively the feedback of input voltage, output voltage, output current, feedback is to obtain by ohmically voltage dividing potential drop, and these voltages are through modulate circuits conditioning, gathers laggard line algorithm processing by the DSP of CPU element 1; Boosting unit 4 comprises voltage-multiplying circuit 13 and unit 14 and metal-oxide-semiconductor and metal-oxide-semiconductor driving locking circuit; High-tension ignition unit 6 is made of together the voltage output of multiplication of voltage generation unit 13 and transformer unit 14.
Preferably, the utlity model has the voltage adaptation that starts and light a fire again under the different voltages, modulate circuit unit 15 removes Voltage Feedback and current feedback, also nurse one's health input voltage signal, the supply voltage according to different passes through Optimal Control Strategy, different start-up parameter and ignition parameter again are set, realize the adaptability under the different voltages, reduced loss and caloric value, improved reliability.
Fig. 4 is the structural representation according to the driving of the utility model embodiment and locking circuit.
As shown in Figure 4, drive unit drives MOS unit in driving and the locking circuit 11, the locking circuit comprises Voltage Feedback 21, Voltage Feedback and reference voltage 22 are relatively, after comparing unit 18 compares, drive 20 unit Q100, MOS driver element 19 is driven through resistance R 200 by the IO of CPU element 17, as output voltage DC OUT during less than set point, rate of exchange device unit 18 is output as low, Q100 ends, and the MOS drive circuit is driven by CPU, as output voltage DC OUT during greater than set point, comparator unit 18 is output as height, the driving output of CPU element to the MOS driver element is forbidden in the Q100 conducting, realizes the voltage latch functions.
Preferably, driving and locking circuit comprise: processing module; The MOS driver element; Comparing unit; Drive triode, wherein, an input of comparing unit is connected to boosting unit via first resistance, and another input is connected to power subsystem via second resistance, and output is connected to the driving triode; An output that drives triode is connected to the MOS driver element, and is connected with central processing unit by the 3rd resistance.
Fig. 5 is the structural representation according to the power filter of the utility model embodiment.
As shown in Figure 5, the power filter structure chart comprises the notch filter that wiring inductance and capacitor C 100 constitute, notch filter is formed the LC filter by inductance and electric capacity, inductance utilizes the equivalence of PCB cabling to form inductance and capacitor C 100 constitutes filter, forms resonance under characteristic frequency, the external power source input is behind notch filter, external power source disturbs near the interference resonance frequency, can be decayed by notch filter, realizes external power source characteristic frequency interference filter; MOS switch element 24 forms near switching frequency external power source is disturbed, behind notch filter, the MOS switch is near the interference of external power source interference switching frequency, can be decayed by notch filter, realization is to MOS switch characteristic frequency interference filter, promptly realize near the notch filter the controller switches frequency, reduce the radiated interference of controller the outside.Power filter also comprises inductance L 100 and capacitor C 200, C300, wherein, inductance L 100 and capacitor C 200, C300, constitute the ∏ mode filter, the ∏ mode filter is a low pass filter, and external power source is imported behind the ∏ mode filter, and external power source disturbs the interference more than lowpass frequency, can be decayed by the ∏ mode filter, realize the above interference filter of external power source characteristic frequency; What controller unit formed disturbs external power source, behind the ∏ mode filter, what controller unit formed disturbs interference more than lowpass frequency to external power source, can be decayed by the ∏ mode filter, that realizes that controller unit forms disturbs interference filter more than lowpass frequency to external power source, reduce the radiated interference of controller, realize the filtering on the power line is further reduced conducted interference the outside.
Wherein, filter circuit comprises: first electric capacity, second electric capacity, the 3rd electric capacity, wiring inductance, and wherein, first electric capacity and wiring inductance series connection constitute the LC filter; Second electric capacity, the 3rd electric capacity and second inductor constitute the ∏ mode filter.
Wherein, the ∏ mode filter is a low pass filter.
Fig. 6 is the structural representation according to the control system of the preferred high-intensity discharge lamp of the utility model embodiment.
As shown in Figure 6, the control system of this high-intensity discharge lamp comprises: CPU element 1, boosting unit 4, full-bridge drive output unit 5, lights unit 7.Wherein, this control system comprises Based Intelligent Control and critical conduction mode control model.
Based Intelligent Control is controlled block diagram as shown in Figure 6, this control system monitoring i
LampAnd v
LampValue, the i that feedback element is detected
LampAnd v
LampValue carry out multiplying, draw the power p of system output
Lamp, power reference p
RefWith the power output p of system
LampSubtract each other and obtain power error p
Err, power error is through adjuster G
c(s) regulate and regulate, the control output of realization system in conjunction with the output of pulse-width modulated after the control algolithm (PulseWidth Modulation abbreviates PWM as) unit.Wherein, pulse width modulation (PWM) is a kind of analog control mode, its variation according to respective loads comes the biasing of modulation crystal tube grid or base stage, realize switching power supply output transistor or the change of transistor turns time, this mode can make the output voltage of power supply keep constant when operation conditions change, is to utilize the numeral of microprocessor to export a kind of very effective technology that analog circuit is controlled.
Intelligent control algorithm can feed back Voltage Feedback and the current feedback in the boosting unit 4, because the feedback parameter difference, so the voltage and current feedback characteristic difference after the igniting of cold and hot lamp, i.e. i
LampAnd v
LampThe feature difference, monitoring voltage modulate circuit output and current regulating circuit are exported, and just can distinguish cold and hot lamp and control in conjunction with different control algolithms.
Frequency conversion and critical conduction mode control, promptly the feedback parameter according to Voltage Feedback in the boosting unit 4 that is fed back and current feedback is different, and the state of xenon lamp control system, the duty ratio or the frequency of the gate driving that MOS is driven are adjusted in real time, and the xenon lamp control system is normal to be started and required operating voltage and the operating current of steady operation to satisfy.
Wherein, the voltage and current feedback that CPU element 1 provides according to voltage modulate circuit and current regulating circuit; carry out the algorithm computing; electric current loop; Voltage loop and power control; and driving boosting unit 4; produce the required voltage of full-bridge output unit 5 and high-tension ignition unit 6; the voltage and current modulate circuit can also be realized failure diagnosis and protection after CPU element 1 computing; failure diagnosis and protection comprise the input overvoltage; import under-voltage; work as voltage feedback unit; the feedback of current feedback unit occurs when unusual; can judge the input overvoltage by CPU; import under-voltage, overcurrent or lamp open circuit, and turn-off output or change control algolithm and protect.
Fig. 7 is the flow chart according to the preferred high-intensity discharge lamp control method of the utility model embodiment.
As shown in Figure 7, this preferred high-intensity discharge lamp control method comprises the steps:
Step S301, initialization.In the utility model, at first carry out system initialization when lighting a lamp.
Step S302, charging bootstrap capacitor, fixed frequency output.Wherein, system exports according to the fixed frequency fixed duty cycle.
Step S303, fixedly 400V output is adjusted.In the utility model, Voltage loop control is output as fixedly 400V.
Step S304 judges whether igniting according to testing result.Light a fire and successfully change step SS305 over to, otherwise, change step S303 over to.
Step S305, beginning transition and burning lamp process.
Step S306 compares modulating voltage and threshold voltage, judges whether V＞Value1 sets up, and when modulating voltage during smaller or equal to threshold values Value1, changes step S307 over to, otherwise enters the process 2 of second decision threshold, sees Fig. 8 in detail.
Step S307, constant current output control.When modulating voltage reaches threshold values Value1, enter the constant-current driving process, realize by current closed-loop.
Wherein, when the xenon lamp control system starts, start, after the xenon lamp control system starts, realize the power adjustment, xenon lamp control system power output is changed according to set power curve by frequency conversion with certain frequency and duty ratio.
In the utility model, control flow as shown in Figure 7, CPU control comprises Current Control feedback loop and feedback power control loop, presets the threshold values maximum level if electric current is in, then the power of current control loop control xenon lamp; If current value is lower than and presets the threshold values maximum level, the power of power control circuit control xenon lamp.
Fig. 8 is the flow chart according to the preferred high-intensity discharge lamp control method of the utility model embodiment.
As shown in Figure 8, this preferred high-intensity discharge lamp control method comprises the steps:
Step S401 when modulating voltage during smaller or equal to the first threshold values Value1, compares modulating voltage and threshold voltage Value2, judges whether V＞Value2 sets up, when modulating voltage V more than or equal to Value2, change step S403 over to, otherwise, change step S402 over to.
Step S402 enters permanent power process.
Step S403 judges whether timing time reaches Preset Time, judges promptly whether is timing this moment.If reach Preset Time, enter step S405, otherwise, change step 404 over to.
Step S404, variable frequency control and fall the power process
Step S405, permanent power process and critical conduction mode control
Step S406 judges whether break down this moment, if fault enters step S407, otherwise, change step S405 over to.
Step S407, troubleshooting
Wherein, under the situation of feedback voltage greater than second voltage threshold, can also comprise: CPU element picks up counting after permanent power output control finishes; CPU element judges whether the time of timing arrives Preset Time; Arrive under the situation of Preset Time in the time of timing, CPU element is carried out critical conduction mode control; Under the situation of the time of timing no show Preset Time, CPU element is carried out variable frequency control.
In the utility model, after the xenon lamp control system is stable,,, make the xenon lamp control system be operated in critical conduction mode by real-time duty ratio or frequency of finely tuning the gate driving of MOS driving according to Fig. 8 flow process.Critical conduction mode realizes by indirect detection boosting unit transformer secondary current, when detecting the secondary current electric current and be zero, makes gate driving that MOS drives for high, and promptly switch is operated under the critical conduction mode.
Fig. 9 is the schematic diagram according to the preferred voltage modulate circuit of the utility model embodiment.
As shown in Figure 9, modulate circuit according to present embodiment comprises: the 4th resistance, the 5th resistance, first operational amplifier, first capacitor, wherein, the first input end of first operational amplifier is connected to power supply, second input of first operational amplifier is via the 4th grounding through resistance, and first capacitor and the 5th resistance are parallel between the output and first input end of first operational amplifier.
The modulate circuit of input voltage and output voltage can be as shown in Figure 6, and different is the diode that the input voltage modulate circuit does not have the input of catching among the figure and connected.
After input voltage and output voltage process resistance R 100, the R101 dividing potential drop, produce voltage acquisition among the figure, voltage acquisition is nursed one's health through resistance R 102, R103, capacitor C 102 and operational amplifier U100, produce the voltage sample conditioning output shown in the figure, this voltage sample conditioning output participates in the control algolithm computing after the CPU element collection.
Voltage sample conditioning output produces voltage sample and catches input behind diode D100, voltage sample is caught and failed after CPU element is caught, and can carry out state variation, participates in the control algolithm computing.
Figure 10 is the schematic diagram according to the preferred current regulating circuit of the utility model embodiment.
As shown in figure 10, current regulating circuit according to the utility model embodiment comprises: the 8th resistance, the 9th resistance, the tenth resistance, the 11 resistance, second operational amplifier, second capacitor and inductance, wherein, an input of inductance is via the 8th grounding through resistance, and the other end is via second capacitor grounding and be connected to the first input end of second operational amplifier via the 9th resistance; Second input of second operational amplifier is via the 11 grounding through resistance; The tenth resistance is parallel between the first input end and output of second operational amplifier.
The current feedback acquisition and conditioning circuit can be as shown in Figure 7, current feedback is after resistance R 106, produce current sample voltage shown in the figure, inductance L 100, capacitor C 104 are filter circuit, carrying out filtered voltage nurses one's health through resistance R 106, R107, R108, capacitor C 103 and operational amplifier U101, produce the current sample conditioning output shown in the figure, this current sample conditioning output participates in the control algolithm computing after the CPU element collection.
CPU control comprises Current Control feedback loop and feedback power control loop, the feedback power control loop is carried out drawing after the computing through CPU by current feedback loop and voltage feedback loop, if being in, electric current presets the threshold values maximum level, then the power of current control loop control xenon lamp; If current value is lower than and presets the threshold values maximum level, the power of power control circuit control xenon lamp.
The voltage and current modulate circuit can also be realized failure diagnosis and protection after the CPU element computing; failure diagnosis and protection comprise the input overvoltage, input is under-voltage; when the feedback of voltage feedback unit, current feedback unit occurs when unusual; can by CPU judge the input overvoltage, the input under-voltage; overcurrent or lamp open circuit, and turn-off output or change control algolithm and protect.
The vehicle xenon lamp control system can be optimized control to new and old lamp and different lamp, specific implementation is, new and old lamp and different lamps, voltage modulate circuit in igniting back and the lamp warm is different with voltage, the electric current of the output of current regulating circuit, at different voltage-current curves, control system adopts different control algolithm control, has realized the Adaptive Control of different lamps and new and old lamp.
The vehicle xenon lamp control system has the voltage adaptation that starts and light a fire under the different voltages, modulate circuit unit 15 removes Voltage Feedback and current feedback, also nurse one's health input voltage signal, according to different supply voltages, by Optimal Control Strategy, different start-up parameter and ignition parameter again are set, realize the adaptability under the different voltages, reduce loss and caloric value, improved reliability.
It below only is preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
As can be seen from the above description, the utility model has been realized following technique effect: 1, reduced overall power and caloric value.
The purpose of this utility model provides a kind of automotive HID system, and the critical conduction mode control that realizes Based Intelligent Control and instead swash variator has reduced overall power and caloric value, has improved efficient.
2, realized the output voltage locking, protection rear end components and parts have improved component reliability and useful life.
Because the utility model instead swashs the protection of variator output voltage locking, has realized the output voltage locking, protection transformer and rear end components and parts have improved component reliability and useful life.
3, realized adaptability under the different voltages.
According to different supply voltages, by Optimal Control Strategy, realize the adaptability under the different voltages, reduced loss and caloric value, improved reliability.
4, adopt variable frequency control, reduce loss and radiation.
5, adopt the design of power import notch filter, reduce the conduction emission and disturb.
In sum, the utility model can solve simultaneously that existing xenon lamp systems loss is big, heating is big, and voltage adaptation is poor, problems such as cold and hot lamp and different lamp bad adaptability.The purpose of this utility model provides a kind of vehicle xenon lamp control system, and the critical conduction mode control that realizes Based Intelligent Control and instead swash variator has reduced overall power and caloric value, has improved efficient; Brightness height, efficient height, energy-saving advantages have been compared with traditional headlight.
The above is a preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (11)
1. the control system of a high-intensity discharge lamp is characterized in that, comprising:
Power subsystem provides power supply;
The high-tension ignition unit is electrically connected with described high-intensity discharge lamp and described power subsystem, for described high-intensity discharge lamp igniting provides voltage;
Wherein, described power subsystem comprises filter circuit, and the power supply that described power subsystem is provided carries out Filtering Processing.
2. system according to claim 1 is characterized in that, described system also comprises:
Boosting unit is connected with described high-tension ignition unit with described power subsystem, the voltage that described power subsystem the is provided processing of boosting, and the voltage after will boosting offers described high-tension ignition unit;
Feedback unit is connected with described boosting unit, and Voltage Feedback and/or the current feedback relevant with described boosting unit is provided;
The CPU control unit is connected with described feedback unit with described boosting unit, controls and drive described boosting unit according to described Voltage Feedback and/or described current feedback that described feedback unit provides.
3. system according to claim 2 is characterized in that, described boosting unit comprises:
Voltage-multiplying circuit once boosts to described power supply generation.
4. system according to claim 2 is characterized in that, described boosting unit comprises:
Drive and the locking circuit, when output voltage surpasses predetermined threshold, described output voltage is carried out locking.
5. system according to claim 4 is characterized in that, described driving and locking circuit comprise:
Processing module;
The MOS driver element;
Comparing unit;
Drive triode, wherein,
An input of described comparing unit is connected to described boosting unit via first resistance, and another input is connected to power subsystem via second resistance, and output is connected to described driving triode;
An output of described driving triode is connected to described MOS driver element, and is connected with described central processing unit by the 3rd resistance.
6. according to each described system in the claim 1 to 5, it is characterized in that described filter circuit comprises:
First electric capacity, second electric capacity, the 3rd electric capacity, wiring inductance, wherein,
Described first electric capacity and the series connection of described wiring inductance constitute the LC filter;
Described second electric capacity, described the 3rd electric capacity and second inductor constitute the ∏ mode filter.
7. system according to claim 6 is characterized in that, described ∏ mode filter is a low pass filter.
8. according to each described system in the claim 1 to 5, it is characterized in that described system also comprises:
Full-bridge drives output unit, and the direct voltage that described power subsystem is provided is converted to alternating voltage, and described alternating voltage is offered described high-intensity discharge lamp and described high-tension ignition unit.
9. system according to claim 8 is characterized in that, described full-bridge drives output unit and comprises:
The full-bridge chip for driving is connected to described high-intensity discharge lamp and provides full-bridge to drive to it;
Protective circuit is connected to described full-bridge chip for driving and high-intensity discharge lamp, so that voltage protection to be provided.
10. system according to claim 9 is characterized in that, described power subsystem also comprises:
Cpu power is connected with described central processing unit, for described CPU control unit provides power supply;
The MOS driving power drives with the MOS of described boosting unit and full-bridge drives output unit and is connected, for the MOS of described boosting unit drives and full-bridge driving output unit provides power supply.
11. system according to claim 8 is characterized in that, described power subsystem also comprises:
Cpu power is connected with described central processing unit, for described CPU control unit provides power supply;
The MOS driving power drives with the MOS of described boosting unit and full-bridge drives output unit and is connected, for the MOS of described boosting unit drives and full-bridge driving output unit provides power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200467980U CN201616949U (en) | 2010-01-07 | 2010-01-07 | Control system of high-strength discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200467980U CN201616949U (en) | 2010-01-07 | 2010-01-07 | Control system of high-strength discharge lamp |
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| Publication Number | Publication Date |
|---|---|
| CN201616949U true CN201616949U (en) | 2010-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200467980U Expired - Lifetime CN201616949U (en) | 2010-01-07 | 2010-01-07 | Control system of high-strength discharge lamp |
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| CN (1) | CN201616949U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106068631A (en) * | 2014-03-05 | 2016-11-02 | 罗伯特·博世有限公司 | The method of the transmitting that the subscriber station of bus system and the circuit reduced in bus system conduct |
| CN113543398A (en) * | 2021-09-14 | 2021-10-22 | 中国工程物理研究院流体物理研究所 | Device and method for improving reliability of high-power pulse xenon lamp light source |
-
2010
- 2010-01-07 CN CN2010200467980U patent/CN201616949U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106068631A (en) * | 2014-03-05 | 2016-11-02 | 罗伯特·博世有限公司 | The method of the transmitting that the subscriber station of bus system and the circuit reduced in bus system conduct |
| CN106068631B (en) * | 2014-03-05 | 2020-05-15 | 罗伯特·博世有限公司 | Subscriber station of a bus system and method for reducing line-conducted emissions in a bus system |
| CN113543398A (en) * | 2021-09-14 | 2021-10-22 | 中国工程物理研究院流体物理研究所 | Device and method for improving reliability of high-power pulse xenon lamp light source |
| CN113543398B (en) * | 2021-09-14 | 2021-11-30 | 中国工程物理研究院流体物理研究所 | Device and method for improving reliability of high-power pulse xenon lamp light source |
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Granted publication date: 20101027 |