CN104302080B - Automobile xenon lamp variable frequency decoder - Google Patents
Automobile xenon lamp variable frequency decoder Download PDFInfo
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- CN104302080B CN104302080B CN201410613084.6A CN201410613084A CN104302080B CN 104302080 B CN104302080 B CN 104302080B CN 201410613084 A CN201410613084 A CN 201410613084A CN 104302080 B CN104302080 B CN 104302080B
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Abstract
The invention relates to an automobile xenon lamp variable frequency decoder. The automobile xenon lamp variable frequency decoder comprises a power circuit, a control circuit, an automobile storage battery auxiliary power supply circuit and a hybrid power supply circuit. The power circuit is connected to an automobile lamp power supply circuit. The control circuit controls the power circuit to output currents and voltages to the hybrid power supply circuit. The automobile storage battery auxiliary power supply circuit is connected to an automobile storage battery. The control circuit controls the automobile storage battery auxiliary power supply circuit to output currents and voltages to the hybrid power supply circuit. The hybrid power supply circuit supplies power to xenon lamps after being subjected to rectifying and filtering. By the adoption of the automobile xenon lamp variable frequency decoder, energy can be directly supplied to the xenon lamps for working; with respect to the insufficient current part, the variable frequency decoder supplies sufficient currents to the xenon lamps for working through the hybrid power supply circuit by being connected with the positive pole and the negative pole of the automobile storage battery, so that the positive pole and the negative pole are turned on and turned off to control all headlamps of automobiles to pass detection.
Description
Technical field
The present invention relates to decoder, especially connect the frequency conversion decoder of automobile xenon lamp.
Background technology
Developing rapidly of current electronic technology, increasing automobile all have employed intelligent car running computer CANBUS association
View.Headlight is all with light measure loop, and the power supply being input to halogen regenerative-cycle headlamp have employed 50Hz 200Hz square wave pulse width tune
Signal processed, with power detection loop, current anomaly then instrument desk breaks down code, cuts off headlight current supply circuit, and xenon is installed in order
Gas lamp can not by headlight measure loop install failure.According to the vehicle characteristics of use CANBUS agreement, arise at the historic moment vapour in market
Car xenon lamp decoder product, currently available technology decoding circuit is:
As it is shown in figure 1, by 5 Ω dummy resistance simulation Halogen light electric currents, make the detection of car running computer be passed through,
Then by line group from the supply xenon lamp work of car battery electricity-taking.This equivalent circuit advantage is that decoding percent of pass is high, and xenon lamp starts
Speed is fast.But in the periodic waveform of headlight supply input, shortcoming is that 5 Ω resistance fictitious loads waste tens watts of power,
Heating is serious, has vehicle spontaneous combustion dangerous.
As in figure 2 it is shown, the second prior art decoding circuit is: substitute car light with dummy resistance circuit, pass through
The filtering of 4700uF 20000uF big electrochemical capacitor supplies electricity to xenon lamp work.This decoding circuit shortcoming is due to the big lamp line of former car
Road power (current limliting 5A 6A) to xenon lamp work, limiting xenon lamp needs about 10A big current start speed just to meet xenon
Lamp starts international standard.And electrochemical capacitor starts the super stream of transient state greatly, easily damages car running computer module, also makes installation pass through car
Rate is substantially reduced, it is impossible to adapts to all CANBUS agreement vehicles and installs.
Summary of the invention
The purpose of the present invention, it is simply that overcome the deficiencies in the prior art, it is provided that a kind of by car battery solution big lamp driver confession
Electricity is not enough to the frequency conversion decoder of the automobile xenon lamp to xenon lamp work.
In order to achieve the above object, adopt the following technical scheme that
Automobile xenon lamp frequency conversion decoder, including power circuit 1, control circuit 2, automobile battery auxiliary power supply circuit 3
With AC-battery power source power supply circuits 4；Described power circuit 1 is connected to car light supply line, and described control circuit 2 controls described electricity
Source circuit 1 exports current/voltage to described AC-battery power source power supply circuits 4；Described automobile battery auxiliary power supply circuit 3 is connected to car electricity
Pond, described control circuit 2 controls described automobile battery auxiliary power supply circuit 3 and exports current/voltage to AC-battery power source power supply circuits 4；
Described AC-battery power source power supply circuits 4 are powered for xenon lamp after over commutation and filtering.
Further, described power circuit 1 includes switching power circuit 11 and electronic switching circuit 12；Described switch
Power circuit 11 is connected to car light supply line, and described control circuit 2 controls described switch by described electronic switching circuit 12
Power circuit 11 is connected with the break-make of car light supply line.
Further, in order to entirely simulate Halogen light operating current, meet all CANBUS agreement vehicles and install, institute
State power circuit 1 also to include being located at the electrical switch between switching power circuit 11, car light supply line and reverse-connection preventing circuit 13,
Power supply circuits 14 and car light detection load circuit 15；Described power supply circuits 14 are connected to car light supply line, described electrical switch
And reverse-connection preventing circuit 13 receive switching power circuit 11 control Control of Voltage its formed with car light supply line and be turned on or off back
Road.
Further, described electrical switch and reverse-connection preventing circuit 13 include metal-oxide-semiconductor Q1, and one end is connected to Switching Power Supply
Circuit 11 reception control voltage, the other end are connected to the resistance R2 of metal-oxide-semiconductor Q1 grid, and one end ground connection, the other end are connected to MOS
The resistance R3 of pipe Q1 grid, the source ground of described metal-oxide-semiconductor Q1, drain electrode is connected to the negative pole of power supply circuits 14；
Described power supply circuits 14 include transformator T2, one winding one end be connected to car light supply line negative pole, another
End is connected to the drain electrode of metal-oxide-semiconductor Q1, and another winding one end is connected to car light supply line positive pole, the other end is connect by inductance L1
Enter switching power circuit 11；
Described control circuit 2 includes control chip IC1, audion Q10, and negative pole connects with the colelctor electrode of audion Q10
The diode D4 connect, the resistance R41 connected with the positive pole of diode D4, the other end of described resistance R41 is connected to power supply circuits
The positive pole of 14；Also including that plus earth, negative pole are connected to the Zener diode Z1 of audion Q10 base stage, two ends are respectively connecting to
Audion Q10 base stage and the resistance R26 of colelctor electrode, one end connecting triode Q10 emitter stage, the electric capacity C17 of other end ground connection,
The emitter stage of audion Q10 is connected with control chip IC1；
Described electronic switching circuit 12 includes audion Q9, audion Q8, resistance R34 and resistance R33；Described three
The grounded emitter of pole pipe Q9, base stage is connected to automobile battery auxiliary power supply circuit 3, and colelctor electrode is connected to three poles by resistance R34
The base stage of pipe Q8, the emitter stage of resistance R33 two ends connecting triode Q8 respectively and base stage, the emitter stage of audion Q8 accesses institute
State the positive pole of power supply circuits 14, colelctor electrode is connected with switching power circuit 11, and described control chip IC1 outputs control signals to
Automobile battery auxiliary power supply circuit 3 and the base stage of audion Q9；
Described car light detection load circuit 15 includes resistance R23 and metal-oxide-semiconductor Q6, and described resistance R23 one end is accessed and supplied
The positive pole of electricity circuit 14, the other end is connected with the drain electrode of metal-oxide-semiconductor Q6, the source ground of described metal-oxide-semiconductor；Including being sequentially connected in series
The resistance R24 connected and resistance R25, described resistance R25 ground connection, the connection end of resistance R24 and resistance R25 and metal-oxide-semiconductor Q6
Grid connect；Including audion Q7, its grounded emitter, colelctor electrode is connected to the connection end of resistance R24 and resistance R25,
Base stage is connected to control chip IC1 by resistance R30, the resistance R29 being sequentially connected in series；Including resistance R28, its one end is connected to
The connection end of resistance R30 and resistance R29, other end ground connection；Including electric capacity C18, its one end is connected to resistance R30 and resistance
The connection end of R29, other end ground connection；Including resistance R27, its one end is connected to the connection end of resistance R30 and resistance R29, separately
One end is connected to the positive pole of power supply circuits 14；Including diode Z2, its plus earth, negative pole is connected to the current collection of audion Q7
Pole.
Further, described power circuit 1 also includes that current constant control adjusts circuit 16 and the inspection of light-coupled isolation output voltage
Slowdown monitoring circuit 17, electric 16 tunnels of described current constant control adjustment, to switching power circuit 11 clamper, control its continuous current operating point；Institute
Stating light-coupled isolation output voltage detecting circuit 17 one end and be connected to described switching power circuit 11, the other end is connected to described mixing
The outfan of power-supplying circuit 4, adjusts described switching power circuit 11 and exports constant voltage.
Further, also include time delay discharge loop 5, it diode D11 including being connected in series, diode D8,
Electric capacity C28 and resistance R40, described diode D11 negative pole is connected with the positive pole of diode D8, the negative pole of described diode D11
By electric capacity C28 ground connection, the positive pole of described diode D11 is connected to the positive pole of power supply circuits, and the negative pole of described diode D8 leads to
Cross resistance R40 and be connected to the grid of metal-oxide-semiconductor Q6.
Further, also include time delay power supply circuits 6, it resistance R35 including being sequentially connected in series, diode D10,
The negative pole of diode D5, described diode D10 and the positive pole of diode D5 connect, and the negative pole of described diode D5 is connected to two
The negative pole of pole pipe D4, the other end of described resistance R35 is connected to the colelctor electrode of audion Q8, also includes that an end receives diode
D10 negative pole, the resistance R36 of other end ground connection and the electric capacity C16 in parallel with resistance R36.
Further, described switching power circuit 11 includes another winding one end of transformator T1, described transformator T2
It is connected to car light supply line positive pole, the other end and is accessed the primary coil of transformator T1 by inductance L1；Also include inhaling spike electricity
Road 7, it diode D6 and electric capacity C6 of including being connected in series in the primary coil two ends of transformator T1, negative pole is connected to two poles
Pipe D6 and electric capacity C6 is connected the diode D7 of end, and the positive pole of diode D7 is connected to switching power circuit 11.
Further, described AC-battery power source power supply circuits 4 include diode D2 and diode D9, described diode D2
Positive pole be connected with power circuit 1, the positive pole of described diode D9 is connected with automobile battery auxiliary power supply circuit 3, described diode
The negative pole of D2 and the negative pole of diode D9 are commonly connected to positive output end, negative output terminal ground connection, parallel connection between positive and negative outfan
There are electric capacity C7, electric capacity C27 and electric capacity C24.
Further, described automobile battery auxiliary power supply circuit 3 includes optocoupler control chip IC3, and it passes through resistance R22
It is connected to the base stage of audion Q9；Metal-oxide-semiconductor Q3, its drain electrode is connected to the positive pole of diode D9, source electrode and vehicle-mounted charge battery
Positive pole connects, and grid is connected to optocoupler control chip IC3 by resistance R5；It is connected in parallel on the resistance of metal-oxide-semiconductor Q3 drain electrode and grid
The positive pole of R4 and Zener diode Z3, described Zener diode Z3 connects the grid of metal-oxide-semiconductor Q3；Photoconductive resistance RV1 one end is even
It is connected to the source electrode of metal-oxide-semiconductor Q3, other end ground connection.
Compared with prior art, the beneficial effects of the present invention is:
The energy is directly fed xenon lamp work by the present invention, and not enough current segment, by picking up battery plus-negative plate, with mixed
Close the power circuit supply enough current works of xenon lamp, make positive pole, negative switch control headlight vehicle and can be transferred through.
Further, since entirely simulate Halogen light operating current, meet all CANBUS agreement vehicles and install, xenon lamp
Not enough current segment is powered by car battery, makes xenon lamp priming speed reach genuine xenon lamp priming speed, meets priming speed state
Border standard.Full simulation Halogen light electric energy more than 85% efficiency works for giving xenon lamp, save with 5 Ω dummy resistances decodings
The energy wasted, energy-saving significance is big.
Accompanying drawing explanation
Fig. 1 is equivalent circuit theory and the Waveform Input output figure of the first prior art；
Fig. 2 is equivalent circuit theory and the Waveform Input output figure of the second prior art；
Fig. 3 is the circuit general diagram of the present invention；
Fig. 4 is the equivalent circuit theory figure of Fig. 3；
Fig. 5 is the automobile xenon lamp concrete block diagram of frequency conversion decoder circuit of the present invention.
Fig. 6 is the circuit diagram of the automobile xenon lamp frequency conversion decoder of the present invention.
Detailed description of the invention
Describe the present invention in detail below in conjunction with accompanying drawing and specific implementation method, the present invention schematically implement and
Illustrate for explaining the present invention, but not as a limitation of the invention.
As it is shown on figure 3, the automobile xenon lamp frequency conversion decoder of the present invention includes power circuit 1, control circuit 2, car
Storage battery auxiliary power supply circuit 3 and AC-battery power source power supply circuits 4.Power circuit 1 is connected to car light supply line, powers from car light
Obtaining the power supply of car headlight in circuit, described automobile battery auxiliary power supply circuit 3 is connected to car battery, obtains power supply from car battery.
Control circuit 2 controls power circuit 1 according to the situation of power circuit 1 and exports current/voltage extremely described AC-battery power source power supply circuits 4,
Control automobile battery auxiliary power supply circuit 3 simultaneously and export current/voltage to AC-battery power source power supply circuits 4, eventually pass AC-battery power source and supply
Power for xenon lamp after the rectification of electricity circuit 4 and filtering.
Fig. 4 is the equivalent circuit theory figure of Fig. 3.Switch in Fig. 4 is equivalent to the control point that control circuit controls, logical
Cross control equivalent switch Guan Bi or disconnect, it is achieved two kinds of functions of automobile xenon lamp frequency conversion decoder of the present invention.One is to work as car
Headlight when being not switched on, the power supply being input to halogen regenerative-cycle headlamp have employed 50Hz 200Hz square wave pulse width modulated signal, with detection
Whether car headlight is in normal condition.When at this time needing to detect square wave pulse width modulated signal, connection is had the opening of branch road of resistance
Closing Guan Bi conducting, to reach to make vehicle control system think, automobile front lamp loop is as normal condition.Another kind is to need to open vehicle
During headlight, now need to be powered to xenon lamp by transformator, now need transformator by connecting headlamp supply input loop
Switch Guan Bi also disconnects the branch road with resistance, and use according to actual electric power thus supplied car battery as auxiliary electric power supply,
Xenon lamp is made can quickly to start and maintain normal work.
Fig. 5 is the automobile xenon lamp concrete block diagram of frequency conversion decoder circuit of the present invention.The automobile xenon lamp frequency conversion of the present invention
Decoder has all of circuit module or circuit unit in Fig. 5.Power circuit 1 includes switching power circuit 11 and electrical switch
Circuit 12.Wherein, switching power circuit 11 is connected with car light supply line, obtains the electric energy of car light supply line.Control electricity
Road 2 by electronic switching circuit 12 control switching power circuit 11 and car light supply line be turned on and off be connected.Power supply electricity
Road 1 also includes being located at the electrical switch between switching power circuit 11, car light supply line and reverse-connection preventing circuit 13, power supply circuits
14 and car light detection load circuit 15.Power supply circuits 14 are connected to car light supply line, electrical switch and reverse-connection preventing circuit 13 and connect
Receive switching power circuit 11 controls Control of Voltage its formation is turned on or off loop play anti-reverse with car light supply line
Function, it is to avoid the problem of the circuit burnout that input wrong causes.Functioning as in Fig. 4 of electrical switch and reverse-connection preventing circuit 13
Resistance branch.By the control of switching power circuit 11, electrical switch and reverse-connection preventing circuit 13 and power supply circuits can be controlled
Formation or disconnection.
Power circuit 1 also includes that current constant control adjusts circuit 16 and light-coupled isolation output voltage detecting circuit 17.Constant current
Electric 16 tunnels of control adjustment are to switching power circuit 11 clamper, and control its continuous current operating point.Light-coupled isolation output voltage is examined
Slowdown monitoring circuit 17 one end is connected to switching power circuit 11, and the other end is connected to the outfan of AC-battery power source power supply circuits 4, adjusts
Described switching power circuit 11 exports constant voltage.
Power circuit 1 also includes time delay discharge loop 5 and time delay power supply circuits 6.Time delay discharge loop 5 is examined with car light
Survey load circuit connects, and it is the short pulse that car light circuit sends rushes by rising edge trailing edge transition when, to car light detection load
The loop time delay that connects is powered, and makes car light detection load circuit work on.Time delay power supply circuits 6 are opened at electronic switching circuit 12
When power to control circuit 2 time delay, cannot charge electronic switching circuit 12 is closed when, it is impossible to control circuit 2
Time delay is powered.Power circuit 1 also includes inhaling spike circuit 7, the residual voltage that disappears loop 8 and superpressure shutdown detecting circuit 9.Suction spike electricity
Road 7 is reduced flyback and is encouraged the switch spike that power work produces.The electric capacity charging in clear power supply circuits 14 can be put in the residual voltage that disappears loop 8
Electricity, make switching power circuit 11 can complete reset.Superpressure shutdown detecting circuit 9 can form overvoltage to control circuit 2
Protection.
As shown in Figure 6, the automobile xenon lamp of the present invention opens decoder circuit, and it is mainly by resistance R23, metal-oxide-semiconductor
Q6, audion Q7, metal-oxide-semiconductor Q1 loop are detected for car light signal break-make, and lamp loop is normal to allow vehicle control judge.Drive
During lamp, by by control chip IC1, transformator T1, metal-oxide-semiconductor Q2, control chip IC2, diode D2, audion Q8 and
Audion Q9 constitute constant pressure and flow power to xenon lamp, by control chip IC1, optocoupler control chip IC3, metal-oxide-semiconductor Q3, two
Pole pipe D9 constitutes loop to xenon lamp auxiliary power supply.Power circuit 1 simulates Halogen light operating current, by car battery auxiliary power supply
Circuit supplements and is insufficient to electric current, makes xenon lamp priming speed meet international standard.
In Fig. 6, AC-battery power source power supply circuits 4 include diode D2 and diode D9.The positive pole of diode D2 and electricity
The secondary coil of the transformator T1 of source circuit 1 connects.The positive pole of diode D9 is connected to the MOS of automobile battery auxiliary power supply circuit 3
The drain electrode of pipe Q3.The negative pole of diode D2 and the negative pole of diode D9 are commonly connected to positive output end OUT+, negative output terminal OUT-
Ground connection, is parallel with electric capacity C7, electric capacity C27 and electric capacity C24 between positive and negative outfan.
Electrical switch and reverse-connection preventing circuit 13 include metal-oxide-semiconductor Q1, and its drain electrode is connected to a winding of transformator T2.Source
Pole ground connection, grid is passed through resistance R3 ground connection, is connected to 8 feet of control chip IC2 by resistance R2.
Winding one end of the transformator T2 of power supply circuits 14 is connected to car light supply line negative pole IN-, the other end even
It is connected to the drain electrode of metal-oxide-semiconductor Q1；Another winding one end is connected to car light supply line positive pole IN+, the other end is connect by inductance L1
Enter the transformator T1 of switching power circuit 11.Varistor RV2, electric capacity C2 it is provided with between two windings of transformator T2,
Electric capacity C3.Electric capacity C4, electric capacity C5 mono-end receive V1 point, other end ground connection.The electric capacity C20 that is connected in parallel, electric capacity C21,
Electric capacity C22 and electric capacity C23, electric capacity C20, electric capacity C21, electric capacity C22 and electric capacity C23 are altogether.
Control circuit 2 includes control chip IC1, audion Q10, and negative pole is connected with the colelctor electrode of audion Q10
Diode D4, the resistance R41 connected with the positive pole of diode D4, the other end of resistance R41 is just being connected to power supply circuits 14
Pole.Also including that plus earth, negative pole are connected to the Zener diode Z1 of audion Q10 base stage, two ends are respectively connecting to audion
The resistance R26 of Q10 base stage and colelctor electrode, one end connecting triode Q10 emitter stage, the electric capacity C17 of other end ground connection, audion
The emitter stage of Q10 is connected with 5 feet of control chip IC1.
Electronic switching circuit 12 includes audion Q9, audion Q8, resistance R34 and resistance R33.Audion Q9's
Grounded emitter, base stage is connected to the resistance R22 of automobile battery auxiliary power supply circuit 3, and colelctor electrode is connected to three by resistance R34
The base stage of pole pipe Q8.The emitter stage of resistance R33 two ends connecting triode Q8 respectively and base stage, the emitter stage of audion Q8 accesses
The V1 point of power supply circuits 14, colelctor electrode are connected with 7 feet of the control chip IC2 of switching power circuit 11, control chip IC1
Output control signals to automobile battery auxiliary power supply circuit 3 and the base stage of audion Q9.
Car light detection load circuit 15 includes resistance R23 and metal-oxide-semiconductor Q6.Power supply circuits 14 are accessed in resistance R23 one end
V1 point, V1 point connects with the positive pole IN+ of power supply circuits, and the other end is connected with the drain electrode of metal-oxide-semiconductor Q6.The source electrode of metal-oxide-semiconductor
Ground connection.Also include resistance R24 and the resistance R25 being sequentially connected in series.Resistance R25 ground connection, resistance R24 and resistance R25's
Connect end to be connected with the grid of metal-oxide-semiconductor Q6.The grounded emitter of audion Q7, colelctor electrode is connected to resistance R24 and resistance R25
Connection end, base stage is connected to control chip IC1 by the resistance R30, the resistance R29 that are sequentially connected in series.Resistance R28 one end connects
To the connection end of resistance R30 and resistance R29, other end ground connection.Electric capacity C18 one end is connected to resistance R30's and resistance R29
Connect end, other end ground connection.Resistance R27 one end is connected to the connection end of resistance R30 and resistance R29, and the other end is connected to V1
Point.The plus earth of Zener diode Z2, negative pole is connected to the colelctor electrode of audion Q7.
Time delay discharge loop 5 includes diode D11, diode D8, electric capacity C28 and the resistance R40 being connected in series.
Diode D11 negative pole is connected with the positive pole of diode D8.The negative pole of diode D11 passes through electric capacity C28 ground connection.Diode D11
Positive pole be connected to the positive pole of power supply circuits.The negative pole of diode D8 is connected to the grid of metal-oxide-semiconductor Q6 by resistance R40.
Time delay power supply circuits 6 include resistance R35, diode D10, the diode D5 being sequentially connected in series.Diode
The negative pole of D10 and the positive pole of diode D5 connect.The negative pole of diode D5 is connected to the negative pole of diode D4.Resistance R35's
The other end is connected to the colelctor electrode of audion Q8.Also include that an end receives the resistance R36 of diode D10 negative pole, other end ground connection
And the electric capacity C16 in parallel with resistance R36.
Switching power circuit 11 includes transformator T1, and its secondary coil one end ground connection, the other end is connected to diode D2.
Another winding one end of transformator T2 is connected to car light supply line positive pole, the other end is accessed at the beginning of transformator T1 by inductance L1
Level coil.Also including control chip IC2, its 7 foot is connected to the colelctor electrode of audion Q8 by resistance R0, and passes through electric capacity
C8 ground connection, 8 feet output 5V voltages, 6 feet are connected to the grid of metal-oxide-semiconductor Q2 by resistance R6, diode D3,5 foot ground connection,
4 feet are connected to the base stage of audion Q5.Physical circuit annexation please see Figure the connection of the electronic device in the dashed box 11 of 6.
Inhale diode D6 and electric capacity C6 that spike circuit 7 includes being connected in series in the primary coil two ends of transformator T1,
Negative pole is connected to diode D6 and electric capacity C6 and is connected the diode D7 of end, and the positive pole of diode D7 is connected to switching power circuit
11。
The optocoupler control chip IC3 of automobile battery auxiliary power supply circuit 3 is connected to the base of audion Q9 by resistance R22
Pole.The drain electrode of metal-oxide-semiconductor Q3 is connected to the positive pole of diode D9, and source electrode is connected with vehicle-mounted charge anode, and grid is by electricity
Resistance R5 is connected to optocoupler control chip IC3.It is connected in parallel on the resistance R4 and Zener diode Z3 of metal-oxide-semiconductor Q3 drain electrode and grid, surely
The positive pole of pressure diode Z3 connects the grid of metal-oxide-semiconductor Q3.Photoconductive resistance RV1 one end is connected to the source electrode of metal-oxide-semiconductor Q3, another
End ground connection.
In Fig. 6, circuit diagram operation principle is: when car light circuit sends the most normal signal of short pulse detection vehicle light circuit
Time, circuit loop is by IN+, FAST2 electric fuse of power supply circuits, transformator T2, resistance R23, the source electrode of metal-oxide-semiconductor Q6
To drain electrode, by resistance R24 for conducting the grid of metal-oxide-semiconductor Q6, make source electrode and the drain electrode conducting of metal-oxide-semiconductor Q6, then through MOS
Pipe Q1 internal body diodes, the IN-of power supply circuits constitute fictitious load unidirectional circuit.When short pulse punching is in rising edge, pass through resistance
R41, diode D4, the filter circuit of pressure-stabilizing being made up of audion Q10, resistance R26, stabilivolt Z1, electric capacity C17 is to control
5 feet of chip IC 1 are powered to 2 feet.The 1 foot output low level of control chip IC1, will by resistance R29, resistance R30
The base stage of audion Q7 is placed in low level, and audion Q7 does not has base bias, is not turned between its colelctor electrode and emitter stage.?
Under the effect of V1, metal-oxide-semiconductor Q6 turns on smoothly.6 feet of control chip IC1 set low level, by audion Q9, resistance R34,
The electronic switching circuit 12 that resistance R33, audion Q8 are constituted is closed, and makes the control chip IC2 not work of switching power circuit 11
Make, then 8 feet of control chip IC2 do not have 5V to export.Now the grid of metal-oxide-semiconductor Q1 does not has running voltage, is in closedown shape
State.The electronic switching circuit constituted due to audion Q9, resistance R34, resistance R33, audion Q8 is closed, and also makes by resistance
The time delay power supply circuits that R35, diode D5, diode D10, resistance R36, electric capacity C16 are constituted cannot charge.Thus can not
Power to control chip IC1 time delay.Owing to 6 feet of control chip IC1 are low level, also make by resistance R22, electric capacity C26,
Optocoupler control chip IC3, resistance R5, resistance R4, Zener diode Z3, metal-oxide-semiconductor Q3 constitute on-off circuit and close, by electricity
Pond Bat+ auxiliary power supply does not works.
When car light detection pulse disappears, the electric capacity C17 of control circuit 2 can only provide Millisecond electric energy for control chip
IC1 works, and makes it reset rapidly, to wait next pulse signal.Repeat principle above, complete headlight signal detection.
When short pulse punching is excessive, by diode D8, diode D11, electric capacity C28, resistance R40 by rising edge to trailing edge
Constitute time delay discharge loop to power to the grid of metal-oxide-semiconductor Q6, make the source electrode of metal-oxide-semiconductor Q6 continue conducting with drain electrode.Pass through resistance
The electricity that electric capacity C4, electric capacity C5, electric capacity C20, electric capacity C21, electric capacity C22, electric capacity C23 fill is put clearly by R23.Due to metal-oxide-semiconductor
Q1 internal body diodes has 0.7V pressure drop, the electricity that electric capacity C2, electric capacity C3 fill to be put clearly by the resistance R1 in the residual voltage loop that disappears.
When short pulse sweep away be down to low level time, control chip IC1 can only provide Millisecond to power due to electric capacity C17, control
Coremaking sheet IC1 power-off restoration the most immediately, completes circuit reset.When next headlight short pulse punching comes again, repeat work above
Principle completes headlight signal detection.
If car light signal is turned on light when being in high level continuously, i.e. input the square wave pulse width signal high level of power supply circuits 14,
Then control chip IC1 not power-off, is detected the burst length (less than 5ms) by control chip IC1 in house software time delay to more than car light,
Control IC1 and control 1 foot output high level.Powered to the base stage of audion Q7 by resistance R29, resistance R30, audion Q7
Colelctor electrode and emitter stage between turn on, the grid of metal-oxide-semiconductor Q6 is set low level, closes resistance R23 dummy resistance loop.
Meanwhile, delay protection loop it is made up of resistance R27, resistance R28, electric capacity C18 when control chip IC1 damages, by audion
Q7 turns on, thus turns off metal-oxide-semiconductor Q6, makes resistance R23 can only operate in Millisecond scope, prevents resistance R23 long term overloading
Burn.3 feet of control chip IC1 close inspection by the superpressure connecting the resistance R31 of V1, resistance R32, electric capacity C19 are constituted
Slowdown monitoring circuit, when the 3 foot valve values of control chip IC1 are low level, then control chip IC1 work.As control chip IC1 3
When foot valve value is high level, its 6 foot is low level, makes superpressure shutdown detecting circuit not work.Control IC1 to be put by 6 feet simultaneously
High level, the electronic switching circuit conducting being made up of audion Q9, diode R34, diode R33, audion Q8.This
Time control chip IC2 obtain by car light circuit voltage supplied, control chip IC2 works.And carried by 6 feet of control chip IC2
For pulse width signal, controlled the grid of metal-oxide-semiconductor Q2 by resistance R6, diode D3, audion Q4, by metal-oxide-semiconductor Q2, change
The flyback sourse that depressor T1 is constituted, by high frequency transformer T1 isolation coupling, by the electric capacity C6 being connected to metal-oxide-semiconductor Q2 source electrode
One end, the other end connects diode D6 positive pole, diode D7 negative pole.Diode D6 negative pole is connected to the transformator T1 other end,
Diode D7 positive pole connects metal-oxide-semiconductor Q2 drain electrode, the suction spike circuit of composition, reduces the switch spike that flyback sourse work produces.
Filtered backward xenon lamp powered by the diode D2 rectification of AC-battery power source power supply circuits, electric capacity C7, electric capacity C27, electric capacity C24.
Adopted by the switching current being connected on the resistance R7 of metal-oxide-semiconductor Q2 drain electrode, resistance R8, resistance R9, resistance R10 are constituted
Sample resistance, by resistance R12, electric capacity C10 filtering send into control chip IC2 3 feet, by audion Q5, resistance R42,
Resistance R43, resistance R16 constitute slope-compensation raise the 3 foot level of control chip IC2 and resistance R7, resistance R8, resistance R9,
The mixing of resistance R10 level meets the 3 foot level controlling control chip IC2, makes resistance R7, resistance R8, resistance R9, resistance
The design resistance of R10 reduces and reduces loss.
Output electric current is controlled so that it is output constant current by controlling 3 feet of IC2.Be attempted by control chip IC2 1,
Electric capacity C11 between 2 feet, resistance R13, electric capacity C13, resistance R14 are constituted control chip IC2 Gain tuning and low-and high-frequency
Decoupling, makes control chip IC2 working stability.Be made up of diode D1, resistance R18, resistance R38, resistance R39 to control
The 1 foot voltage clamp of coremaking sheet IC2, changes the 3 foot current detecting threshold values of control chip IC2, thus adjusts resistance R39 resistance
Value controls control chip IC2 continuous current operating point.
Received output OUT+ by resistance R15, resistance R19, resistance R37, electric capacity R11 access optocoupler control chip IC4
One end, is connected to resistance R20, resistance R21, electric capacity C15 supply control chip IC2 by the optocoupler control chip IC4 other end
2 foot detection voltages complete constant voltage output.
6 feet of control chip IC1 connect base stage and the automobile battery auxiliary power supply circuit being coupled with audion Q9.Pass through
Resistance R22, electric capacity C26,1,2 feet of optocoupler control chip IC3, make 3,4 foot conducting.By resistance R5, resistance
The grid level of metal-oxide-semiconductor Q3 is dragged down by R4, Zener diode Z3, then turn between metal-oxide-semiconductor Q3 source electrode, drain electrode.Car battery
Voltage x current passes through Bat+ entrance, metal-oxide-semiconductor Q3, diode D9, Bat-to xenon lamp auxiliary power supply.
When the car light square wave pulse width signal that positive pole IN+, the negative pole IN-of power supply circuits input is in low level, due to
During car light square wave pulse width signal high level, by resistance R35, diode D10, electric capacity C16 is charged, now control chip IC1
Working on, 6 feet of control chip IC1 continue to set high level, by car battery power Bat+ to metal-oxide-semiconductor Q3 continue conducting,
Car battery auxiliary power supply maintains xenon lamp work.Owing to power supply circuits positive pole IN+, negative pole IN-two ends are in low level, control core
Sheet IC2 can not get voltage and current and closes, without output.By electric capacity C16, diode D5, resistance R26, audion Q10,
Zener diode Z1, electric capacity C17 power to controlling IC1 time delay.Owing to control chip IC2 does not works, its 8 foot is defeated without 5V
Going out, 4 feet of control chip IC1 are low level.When next car light square wave pulse width signal is at high level, control chip IC2
Obtain voltage x current to rework, continue power supply by diode D2 to xenon lamp.Owing to the square wave frequency of different automobile types is different,
Generally 50Hz 200Hz, electric capacity C16 time delay when supplying electricity to the control chip IC1 square wave more than 30Hz, then control chip
IC1 not power-off, its 6 foot continues to set high level, and resistance switch circuit 12 is in the conduction state.When the car light arteries and veins more than 30Hz
When bandwidth signals high level occurs again by power supply circuits positive pole IN+, negative pole IN-, control chip IC2 automatically follow outside side
Wave frequency, generally 50Hz 200Hz, automatically adapt to work, i.e. automatic frequency-conversion, to keep consistent with former car signal frequency.
Repeat principle switch above.When the outside square wave frequency of power supply circuits positive pole IN+, negative pole IN-less than 30Hz or is in continuously
During low level, control chip IC2 does not works, then its 8 foot does not has 5V to export, and 4 feet of control chip IC1 are low level.By
6 feet of control chip IC1 less than 30Hz, are then set low level, electronic cutting by the outside square wave frequency of control chip IC1 delay judgement
Closing circuit 12 and automobile battery auxiliary power supply circuit 3 is turned off, electric capacity C16 time delay is discharged to the work electricity less than control chip IC1
Pressure, control chip IC1 resets, and circuit does not works, and completes decoding function.
The anti-reverse principle of metal-oxide-semiconductor Q1 is: when power supply circuits negative pole IN-is just, when positive pole IN+ is for bearing, metal-oxide-semiconductor
The grid of Q1 does not has driving voltage, ends being not turned on, play anti-reverse effect between metal-oxide-semiconductor Q1 source electrode and drain electrode.
Thermal Cutoffs FAST1, Thermal Cutoffs FAST2, photoconductive resistance RV1, varistor RV2 are used for inputting
Load, superpressure, overtemperature prote.Varistor RV3 is used for connecting the internal negative pole of circuit and decoder shell, prevents electrostatic, high pressure
Internal circuit is damaged.
The technical scheme provided the embodiment of the present invention above is described in detail, specific case used herein
Principle and embodiment to the embodiment of the present invention are set forth, and the explanation of above example is only applicable to help and understands this
The principle of bright embodiment；Simultaneously for one of ordinary skill in the art, according to the embodiment of the present invention, in detailed description of the invention
And all will change in range of application, in sum, this specification content should not be construed as limitation of the present invention.
Claims (10)
1. an automobile xenon lamp frequency conversion decoder, including power circuit (1), control circuit (2), automobile battery auxiliary power supply electricity
Road (3) and AC-battery power source power supply circuits (4), it is characterised in that:
Described power circuit (1) is connected to car light supply line, and it is defeated that described control circuit (2) controls described power circuit (1)
Go out current/voltage to described AC-battery power source power supply circuits (4) to directly feed xenon lamp work；
Described automobile battery auxiliary power supply circuit (3) is connected to car battery, and described control circuit (2) controls described automobile battery auxiliary
Power supply circuits (3) export current/voltage to AC-battery power source power supply circuits (4) with supplementary insufficient section electric current；
Described AC-battery power source power supply circuits (4) are powered for xenon lamp after over commutation and filtering；
When automobile front lamp and when being not switched on, connection is had the switch Guan Bi conducting of the branch road of resistance, to reach to make vehicle control system
Think that automobile front lamp loop is normal condition；
When automobile front lamp opened by needs, the switch of the transformator in connecting headlamp supply input loop is closed and disconnects with resistance
Branch road, and use car battery as auxiliary electric power supply according to actual electric power thus supplied, make xenon lamp can quickly start and tie up
Hold normal work.
Automobile xenon lamp frequency conversion decoder the most according to claim 1, it is characterised in that: described power circuit (1) wraps
Include switching power circuit (11) and electronic switching circuit (12)；Described switching power circuit (11) is connected to car light supply line,
Described control circuit (2) controls described switching power circuit (11) and car light supply lines by described electronic switching circuit (12)
The break-make on road connects.
Automobile xenon lamp frequency conversion decoder the most according to claim 2, it is characterised in that described power circuit (1) is also
Including the electrical switch being located between switching power circuit (11), car light supply line and reverse-connection preventing circuit (13), power supply circuits
(14) and car light detection load circuit (15)；Described power supply circuits (14) are connected to car light supply line, described electrical switch
And reverse-connection preventing circuit (13) receive switching power circuit (11) control Control of Voltage its formed with car light supply line conducting or
Cutoff circuit.
Automobile xenon lamp frequency conversion decoder the most according to claim 3, it is characterised in that:
Described electrical switch and reverse-connection preventing circuit (13) include metal-oxide-semiconductor Q1, and one end is connected to switching power circuit (11) and receives
Control voltage, the other end are connected to the resistance R2 of metal-oxide-semiconductor Q1 grid, and one end ground connection, the other end are connected to metal-oxide-semiconductor Q1 grid
Resistance R3, the source ground of described metal-oxide-semiconductor Q1, drain electrode is connected to the negative pole of power supply circuits (14)；
Described power supply circuits (14) include that transformator T2, one winding one end are connected to car light supply line negative pole, the other end even
Being connected to the drain electrode of metal-oxide-semiconductor Q1, another winding one end is connected to car light supply line positive pole, the other end is opened by inductance L1 access
Close power circuit (11)；
Described control circuit (2) includes control chip IC1, audion Q10, and negative pole is connected with the colelctor electrode of audion Q10
Diode D4, the resistance R41 connected with the positive pole of diode D4, the other end of described resistance R41 is connected to power supply circuits (14)
Positive pole；Also including that plus earth, negative pole are connected to the Zener diode Z1 of audion Q10 base stage, two ends are respectively connecting to three
Pole pipe Q10 base stage and the resistance R26 of colelctor electrode, one end connecting triode Q10 emitter stage, the electric capacity C17 of other end ground connection, three
The emitter stage of pole pipe Q10 is connected with control chip IC1；
Described electronic switching circuit (12) includes audion Q9, audion Q8, resistance R34 and resistance R33；Described audion
The grounded emitter of Q9, base stage is connected to automobile battery auxiliary power supply circuit (3), and colelctor electrode is connected to audion by resistance R34
The base stage of Q8, the emitter stage of resistance R33 two ends connecting triode Q8 respectively and base stage, the emitter stage of audion Q8 accesses described
The positive pole of power supply circuits (14), colelctor electrode are connected with switching power circuit (11), and described control chip IC1 output controls letter
Number to automobile battery auxiliary power supply circuit (3) and the base stage of audion Q9；
Described car light detection load circuit (15) includes resistance R23 and metal-oxide-semiconductor Q6, and power supply electricity is accessed in described resistance R23 one end
The positive pole on road (14), the other end is connected with the drain electrode of metal-oxide-semiconductor Q6, the source ground of described metal-oxide-semiconductor；
Including the resistance R24 being sequentially connected in series and resistance R25, described resistance R25 ground connection, resistance R24 and the company of resistance R25
Connect end to be connected with the grid of metal-oxide-semiconductor Q6；
Including audion Q7, its grounded emitter, colelctor electrode is connected to the connection end of resistance R24 and resistance R25, and base stage is passed through
The resistance R30, the resistance R29 that are sequentially connected in series are connected to control chip IC1；
Including resistance R28, its one end is connected to the connection end of resistance R30 and resistance R29, other end ground connection；
Including electric capacity C18, its one end is connected to the connection end of resistance R30 and resistance R29, other end ground connection；
Including resistance R27, its one end is connected to the connection end of resistance R30 and resistance R29, and the other end is connected to power supply circuits (14)
Positive pole；
Including diode Z2, its plus earth, negative pole is connected to the colelctor electrode of audion Q7.
Automobile xenon lamp frequency conversion decoder the most according to claim 4, it is characterised in that: described power circuit (1) is also
Adjusting circuit (16) and light-coupled isolation output voltage detecting circuit (17) including current constant control, described current constant control adjusts electricity (16)
Road, to switching power circuit (11) clamper, controls its continuous current operating point；Described light-coupled isolation output voltage detecting circuit (17)
One end is connected to described switching power circuit (11), and the other end is connected to the outfan of described AC-battery power source power supply circuits (4),
Adjust described switching power circuit (11) output constant voltage.
Automobile xenon lamp frequency conversion decoder the most according to claim 4, it is characterised in that also include: time delay discharge loop
(5), it includes that diode D11, diode D8, electric capacity C28 and the resistance R40 being connected in series, described diode D11 are negative
Pole is connected with the positive pole of diode D8, and the negative pole of described diode D11 passes through electric capacity C28 ground connection, and described diode D11 is just
Pole is connected to the positive pole of power supply circuits, and the negative pole of described diode D8 is connected to the grid of metal-oxide-semiconductor Q6 by resistance R40.
Automobile xenon lamp frequency conversion decoder the most according to claim 4, it is characterised in that also include: time delay power supply circuits
(6), it includes resistance R35, diode D10, the diode D5 being sequentially connected in series, the negative pole of described diode D10 and
The positive pole of diode D5 connects, and the negative pole of described diode D5 is connected to the negative pole of diode D4, another of described resistance R35
End is connected to the colelctor electrode of audion Q8, also include an end receive diode D10 negative pole, the resistance R36 of other end ground connection and with
The electric capacity C16 that resistance R36 is in parallel.
Automobile xenon lamp frequency conversion decoder the most according to claim 4, it is characterised in that: described switching power circuit (11)
Be connected to car light supply line positive pole including another winding one end of transformator T1, described transformator T2, the other end passes through inductance
L1 accesses the primary coil of transformator T1；
Also include inhaling spike circuit (7), it diode D6 and electricity of including being connected in series in the primary coil two ends of transformator T1
Holding C6, negative pole is connected to diode D6 and electric capacity C6 and is connected the diode D7 of end, and the positive pole of diode D7 is connected to switch electricity
Source circuit (11).
Automobile xenon lamp frequency conversion decoder the most according to claim 4, it is characterised in that described AC-battery power source power supply circuits
(4) include that diode D2 and diode D9, the positive pole of described diode D2 are connected with power circuit (1), described diode
The positive pole of D9 is connected with automobile battery auxiliary power supply circuit (3), and the negative pole of described diode D2 and the negative pole of diode D9 are common
It is connected to positive output end, negative output terminal ground connection, between positive and negative outfan, is parallel with electric capacity C7, electric capacity C27 and electric capacity C24.
Automobile xenon lamp frequency conversion decoder the most according to claim 9, it is characterised in that described automobile battery auxiliary supplies
Electricity circuit (3) includes
Optocoupler control chip IC3, it is connected to the base stage of audion Q9 by resistance R22；
Metal-oxide-semiconductor Q3, its drain electrode is connected to the positive pole of diode D9, and source electrode is connected with vehicle-mounted charge anode, and grid is by electricity
Resistance R5 is connected to optocoupler control chip IC3；
Being connected in parallel on the resistance R4 and Zener diode Z3 of metal-oxide-semiconductor Q3 drain electrode and grid, the positive pole of described Zener diode Z3 connects
The grid of metal-oxide-semiconductor Q3；
Photoconductive resistance RV1 one end is connected to the source electrode of metal-oxide-semiconductor Q3, other end ground connection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410613084.6A CN104302080B (en) | 2014-11-04 | 2014-11-04 | Automobile xenon lamp variable frequency decoder |
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| CN201410613084.6A CN104302080B (en) | 2014-11-04 | 2014-11-04 | Automobile xenon lamp variable frequency decoder |
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| CN104302080B true CN104302080B (en) | 2017-01-11 |
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| CN105142321A (en) * | 2015-08-24 | 2015-12-09 | 肖强 | Dual-power supply-powered quick-start decoding ballast |
| CN110970961B (en) * | 2018-12-06 | 2021-06-08 | 宁德时代新能源科技股份有限公司 | Power consumption protection circuit |
| TWI760921B (en) * | 2020-11-16 | 2022-04-11 | 京辰科技股份有限公司 | Led car lights with bi-directional charging and discharging functions that replace traditional resistive dummy loads |
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| US6392362B1 (en) * | 1999-06-21 | 2002-05-21 | Koito Manufacturing Co., Ltd. | Discharge lamp lighting circuit |
| CN201523476U (en) * | 2009-04-15 | 2010-07-07 | 太仓电威光电有限公司 | Automobile xenon lamp decoder |
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| CN204145861U (en) * | 2014-11-04 | 2015-02-04 | 陈国亮 | A kind of automobile xenon lamp frequency conversion decoder |
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| JPH04196091A (en) * | 1990-11-27 | 1992-07-15 | Matsushita Electric Works Ltd | Emergency lamp |
| JP5573130B2 (en) * | 2009-12-01 | 2014-08-20 | ウシオ電機株式会社 | Discharge lamp lighting device |
| CN203387753U (en) * | 2013-08-09 | 2014-01-08 | 潞城市专利成果转化促进会 | Internal-triggering quadrupolar illuminating lamp with high-frequency controller |
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| US6392362B1 (en) * | 1999-06-21 | 2002-05-21 | Koito Manufacturing Co., Ltd. | Discharge lamp lighting circuit |
| CN201523476U (en) * | 2009-04-15 | 2010-07-07 | 太仓电威光电有限公司 | Automobile xenon lamp decoder |
| CN202484807U (en) * | 2012-03-13 | 2012-10-10 | 深圳市拓邦汽车电子技术有限公司 | Automobile xenon lamp |
| CN103273871A (en) * | 2013-05-31 | 2013-09-04 | 佛山肆强科技有限公司 | Method of using non-halogen lamp as automobile lamp, decoding circuit of using non-halogen lamp as automobile lamp and working method of decoding circuit |
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| CN204145861U (en) * | 2014-11-04 | 2015-02-04 | 陈国亮 | A kind of automobile xenon lamp frequency conversion decoder |
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