CN104427698B - A kind of control circuit - Google Patents
A kind of control circuit Download PDFInfo
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- CN104427698B CN104427698B CN201310390744.4A CN201310390744A CN104427698B CN 104427698 B CN104427698 B CN 104427698B CN 201310390744 A CN201310390744 A CN 201310390744A CN 104427698 B CN104427698 B CN 104427698B
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Abstract
The embodiment of the invention discloses a kind of control circuits, comprising: charging module is connect with positive pole, for adjusting the supply voltage received, is charged for battery；Switching module is connect with the charging module, in power failure, switching to battery power supply, when power supply is normal, switches to power supply power supply；Drive module is connect, for driving Light-Emitting Diode to work with the switching module；Adjustment module is connect with the switching module and the drive module, for adjusting the brightness of lamps and lanterns according to the power supply state of the Light-Emitting Diode.Using the present invention, the output power of emergency light can be automatically controled, the use duration of lamps and lanterns is promoted in Emergency use.
Description
Technical field
The present invention relates to electronic field more particularly to a kind of control circuits.
Background technique
With the development of illuminating industry, need in many places using emergency light, so that when alternating current powers off, lamps and lanterns are met an urgent need
Lamp remains to power using battery, brings convenience for the life and work of people, reduces power-off bring loss, reducing power-off cannot
Depending on the danger of object.Wherein, relatively common can be powered by utility power when alternating current is normal for duration emergency light, put bright light
Tool, and charge a battery simultaneously；When mains-supplied exception, switch to storage battery power supply, lights lamps and lanterns.Due to lamp power perseverance
Fixed, so alternating current is lighted and lights that power is identical with emergency, the output power when emergency is lighted is larger, so that the lamps and lanterns crash time
It is short, it is unable to satisfy escape or emergency repair time requirement.If reducing the overall power of lamps and lanterns, lamp brightness is insufficient when mains-supplied,
It will affect the normal life and work of user.
Summary of the invention
The technical problem to be solved by the embodiment of the invention is that providing a kind of control circuit.It can be automatically controled emergency light
Output power, in Emergency use promoted lamps and lanterns use duration.
In order to solve the above-mentioned technical problem, the embodiment of the invention provides a kind of control circuits, comprising:
Charging module connects to power supply, and for adjusting the supply voltage received, charges for battery；
Switching module is connect with the charging module, in power failure, switches to battery power supply, power supply just
Chang Shi switches to power supply power supply；
Drive module is connect, for driving Light-Emitting Diode to work with the switching module；
Adjustment module is connect with the switching module and the drive module, for the confession according to the Light-Emitting Diode
Electricity condition adjusts the brightness of lamps and lanterns,
Wherein, the switching module includes the 7th diode, the 8th diode, the 9th diode, the 8th capacitor and relay
Device, the anode of the 7th diode connect power supply, and cathode connects the second end of the relay switch, and the of the relay switch
The anode of the one termination battery, the cathode of the first termination the 8th diode of the relay coil, second end ground connection,
The anode of 8th diode connects the anode of the 8th capacitor, the cathode ground connection of the 8th capacitor, the 8th capacitor
Anode connect the anode of the 7th diode, the anode of the 9th diode connects the second end of the relay coil, bears
Pole connects the first end of the relay coil, and the third of the relay switch terminates the adjustment module；
The adjustment module includes the 12nd diode, thirteenth resistor, the 14th resistance, the 15th resistance, the 16th
Resistance, the 17th resistance, the 18th resistance, comparator and third switching tube, the power input termination of the comparator it is described after
The third end of electric switch, ground terminal ground connection, homophase input terminate the cathode of the Light-Emitting Diode, and reverse input end connects described
The first end of 16th resistance, the second end ground connection of the 16th resistance, the output termination the described 12nd of the comparator
The cathode of the anode of diode, the 12nd diode connects the second input terminal of the charging module, the thirteenth resistor
The first termination the 12nd diode cathode, the anti-phase input of the second termination comparator of the thirteenth resistor
End, the non-inverting input terminal of the first termination comparator of the 14th resistance, the second end ground connection of the 14th resistance,
The non-inverting input terminal of the first termination comparator of the 15th resistance, the second termination of the 15th resistance described the
The drain electrode of three switching tubes, the source electrode ground connection of the third switching tube, grid connect the first end of the 18th resistance, and the described tenth
The common node of second termination the 8th diode and the 9th diode cathode of eight resistance, the 17th resistance
The common node of first termination third the switch tube grid and the 18 resistance first end, the second of the 17th resistance
End ground connection.
Wherein, the charging module includes DC/DC converter and its peripheral circuit, and the peripheral circuit includes the one or three pole
Pipe, first resistor, first diode, the first inductance, second resistance, the second triode, 3rd resistor, the first adjustable resistance,
One capacitor, the second diode, third capacitor, the 4th resistance, the 5th resistance and the 4th capacitor, the power supply of the DC/DC converter
Input terminal is the first input end of the charging module, and the feedback pin of the DC/DC converter is the of the charging module
Two input terminals, the output end of the just extremely described charging module of the battery, the current collection of the DC/DC converter inside switching tube
The base stage for terminating first triode is drawn in pole, and the emitter of first triode connects the first end of the 5th resistance,
The second termination positive pole of the 5th resistance, the first resistor one terminate the base stage of first triode, separately
The first end of one termination the 5th resistance, the cathode of the first diode connect the base stage of first triode, and anode connects
The collector of first triode, the collector of termination first triode of first inductance, another termination the
The first end of two resistance, the emitter exit of the second termination DC/DC converter inside switching tube of the second resistance,
The emitter of first termination second triode of the second resistance, it is adjustable that the collector of second triode connects first
The first end of resistance, base stage connects the common node of the 3rd resistor first end and the first adjustable resistance second end, described
The emitter of second termination second triode of 3rd resistor, the first termination battery of first adjustable resistance
Anode, the terminals of the first termination DC/DC converter inside timing capacitor of the first capacitor, second end ground connection, institute
State DC/DC converter ground terminal ground connection, the plus earth of second diode, cathode connect the first diode anode with
The common node of the first inductance first end, the first end ground connection of the third capacitor, the second termination second resistance
Second end, the first end of output voltage sampling the 4th resistance of termination of the DC/DC converter, the second end of the 4th resistance
Ground connection, the collector of the first termination second triode, the power input of the DC/DC converter terminate positive pole, institute
The load peak current sampling for stating DC/DC converter terminates the first end of the 5th resistance, the second end of the 5th resistance
Connect the anode of the 4th capacitor, the cathode ground connection of the 4th capacitor, the collector of the DC/DC converter inside driving tube
Exit is vacant.
Wherein, the charging module further includes the 5th diode and the 6th diode, and the anode of the 5th diode connects
Positive pole, cathode connect the power input of the DC/DC converter, and it is adjustable that the anode of the 6th diode connects described first
The first end of resistance, cathode connect the anode of the battery.
Wherein, the drive module includes switching regulator and its peripheral circuit, the peripheral circuit include the 9th capacitor,
Tenth capacitor, the 11st capacitor, the 12nd capacitor, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the 11st electricity
Resistance, twelfth resistor, the tenth diode, the 11st diode, third inductance.Second protective tube and second switch, described
The anode of nine capacitors connects the third end of the relay switch, and the current detecting input of cathode ground connection, the switching regulator is drawn
Foot connects the first end of the tenth resistance, the second end ground connection of the tenth resistance, and the compensation pin of the switching regulator connects
The first end of 7th resistance, the first end of the second termination the tenth capacitor of the 7th resistance, the tenth capacitor
Second end ground connection, the feedback pin of the switching regulator connects the cathode of the 12nd diode in the adjustment module, simulates
Grounding pin ground connection, power ground foot ground connection, driving pin connect the first end of the 9th resistance, and the second of the 9th resistance
Terminate the first end of the tenth resistance, the frequency adjustment of the switching regulator and shutdown pin connect the of the 8th resistance
One end, the second end ground connection of the 8th resistance, the power input pin of the switching regulator connect the of the third inductance
One end, the anode of the second termination the 11st diode of the third inductance, the cathode of the 11st diode meet institute
State the first end of the 11st capacitor, the second end ground connection of the 11st capacitor, the anode of the 12nd capacitor connects described the
The first end of 11 capacitors, cathode ground connection, the anode of the first termination the 12nd capacitor of the eleventh resistor, described the
The first end of the second termination twelfth resistor of 11 resistance, the second end ground connection of the twelfth resistor, described second
The first end of the first termination eleventh resistor of protective tube, the second termination Light-Emitting Diode of second protective tube
Anode, the cathode of the Light-Emitting Diode connects the non-inverting input terminal of comparator in the adjustment module, the tenth diode
Anode connect the common node of the twelfth resistor first end Yu the eleventh resistor second end, it is steady that cathode connects the switch
The feedback pin of pressure pipe.
Wherein, the circuit further include:
Rectification filtering module is connect with the anode and cathode of power supply, will for carrying out rectifying and wave-filtering processing to supply voltage
Alternating voltage is converted to direct voltage output；
Voltage changing module is connect with the rectification filtering module, the DC voltage for exporting the rectification filtering module
Value adjust to the value of circuit voltage.
Wherein, the rectification filtering module includes thermistor, the first protective tube, low-pass filter, rectifier bridge stack and filter
Wave capacitor, the first protective tube first end are connect with positive pole, the first protective tube second end and the thermistor
First end connection, the thermistor second termination power cathode, the second end and thermistor of the low-pass filter
First end connection, the first end of the low-pass filter connect with the second end of the thermistor, the low-pass filter
Third end connect with the second input terminal of the rectifier bridge stack, the 4th end of the low-pass filter and the rectifier bridge stack
First input end connection, the first output of the rectifier bridge stack terminate the anode of the filter capacitor, second output terminal ground connection, institute
The anode for stating filter capacitor connects the voltage changing module, cathode ground connection.
Wherein, the voltage changing module includes the 5th capacitor, the 6th capacitor, the 7th capacitor, the 6th resistance, the second inductance, the
One switching tube and transformer, the first end of the first termination filter capacitor of the 5th capacitor, the 6th resistance and institute
State the parallel connection of the 5th capacitor, the first input end of the first termination transformer of the 5th capacitor, the of the 5th capacitor
The cathode of the two termination third diodes, the anode of the third diode connects the second input terminal of the transformer, described
The source electrode of first switch tube connects the anode of the third diode, grounded drain, and grid meets PWM, and the first of the transformer is defeated
The anode of the 4th diode, second output terminal ground connection are terminated out, and the cathode of the 4th diode connects second inductance
First end, the anode of the first termination the 6th capacitor of second inductance, the cathode ground connection of the 6th capacitor is described
The anode of second termination the 7th capacitor of the second inductance, the cathode ground connection of the 7th capacitor.
Wherein, first triode and the second triode are PNP type triode.
Wherein, the model MC34063 of the DC/DC converter.
Wherein, the model MC34063 of the DC/DC converter.
The implementation of the embodiments of the present invention has the following beneficial effects:
When alternating current is normal, charging module is battery charging, switches to battery by switching module in municipal power failure as driving
Module for power supply, driving lamps and lanterns work, and provide larger current power supply when alternating current is normal by adjustment module and mentioned in municipal power failure
It powers for smaller current, to realize the output power that can be automatically controled emergency light, the use of lamps and lanterns is promoted in Emergency use
Duration, because of electric current and power is larger leads to emergency service time shorter problem when avoiding the power supply of emergency light battery.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the connection schematic diagram of the first embodiment of control circuit of the present invention；
Fig. 2 is the circuit diagram of rectification filtering module in the second embodiment of control circuit of the present invention；
Fig. 3 is the circuit diagram of voltage changing module in the second embodiment of control circuit of the present invention；
Fig. 4 is the circuit diagram of charging module in the second embodiment of control circuit of the present invention；
Fig. 5 is the circuit diagram of switching module in the second embodiment of control circuit of the present invention；
Fig. 6 is the circuit diagram of drive module in the second embodiment of control circuit of the present invention；
Fig. 7 is the circuit diagram of adjustment module in the second embodiment of control circuit of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1 is please referred to, is the connection schematic diagram of the first embodiment of control circuit of the present invention, it is in the present embodiment, described
Circuit includes: charging module 1, switching module 2, drive module 3, adjustment module 4.
Charging module 1, connect with positive pole, for adjusting the supply voltage received, charges for battery；
Switching module 2 is connect with the charging module 1, in power failure, switching to battery power supply, in power supply
When normal, power supply power supply is switched to；
Drive module 3 is connect, for driving Light-Emitting Diode to work with the switching module 2；
Adjustment module 4 is connect, for according to the Light-Emitting Diode with the switching module 2 and the drive module 3
The brightness of power supply state adjusting lamps and lanterns.
Wherein, the switching module includes the 7th diode, the 8th diode, the 9th diode, the 8th capacitor and relay
Device, the anode of the 7th diode connect positive pole, and cathode connects the second end of the relay switch, the relay switch
The first termination battery anode, the cathode of the first termination the 8th diode of the relay coil, second end
Ground connection, the anode of the 8th diode connect the anode of the 8th capacitor, and the cathode of the 8th capacitor is grounded, and the described 8th
The anode of capacitor connects the anode of the 7th diode, and the anode of the 9th diode connects the second of the relay coil
End, cathode connect the first end of the relay coil, and the third of the relay switch terminates the adjustment module；
The adjustment module includes the 12nd diode, thirteenth resistor, the 14th resistance, the 15th resistance, the 16th
Resistance, the 17th resistance, the 18th resistance, comparator and third switching tube, the power input termination of the comparator it is described after
The third end of electric switch, ground terminal ground connection, homophase input terminate the cathode of the Light-Emitting Diode, and reverse input end connects described
The first end of 16th resistance, the second end ground connection of the 16th resistance, the output termination the described 12nd of the comparator
The cathode of the anode of diode, the 12nd diode connects the second input terminal of the charging module, the thirteenth resistor
The first termination the 12nd diode cathode, the anti-phase input of the second termination comparator of the thirteenth resistor
End, the non-inverting input terminal of the first termination comparator of the 14th resistance, the second end ground connection of the 14th resistance,
The non-inverting input terminal of the first termination comparator of the 15th resistance, the second termination of the 15th resistance described the
The drain electrode of three switching tubes, the source electrode ground connection of the third switching tube, grid connect the first end of the 18th resistance, and the described tenth
The common node of second termination the 8th diode and the 9th diode cathode of eight resistance, the 17th resistance
The common node of first termination third the switch tube grid and the 18 resistance first end, the second of the 17th resistance
End ground connection.
When alternating current is normal, charging module is battery charging, switches to battery by switching module in municipal power failure as driving
Module for power supply, driving lamps and lanterns work, and provide larger current power supply when alternating current is normal by adjustment module and mentioned in municipal power failure
It powers for smaller current, to realize the output power that can be automatically controled emergency light, the use of lamps and lanterns is promoted in Emergency use
Duration, because of electric current and power is larger leads to emergency service time shorter problem when avoiding the power supply of emergency light battery.
Please with reference to Fig. 2-7, rectification filtering module, transformation mould in the second embodiment of control circuit respectively of the present invention
Block, charging module, switching module, drive module, adjustment module circuit diagram.A1, A2, A3, A4, A5, A6 in the various figures
Mark be respectively modules between link position mark.
In the present embodiment, the circuit includes: rectification filtering module, voltage changing module, charging module, switching module, drive
Dynamic model block, adjustment module.
Rectification filtering module is connect with the anode and cathode of power supply, will for carrying out rectifying and wave-filtering processing to supply voltage
Alternating voltage is converted to direct voltage output；
Voltage changing module is connect with the rectification filtering module, the DC voltage for exporting the rectification filtering module 1
Value adjust to the value of circuit voltage；
Specifically, the rectification filtering module includes thermistor RT, the first protective tube F1, low-pass filter LF1, rectification
Bridge heap BD and filter capacitor C, the first protective tube F1 first end are connect with positive pole, and the second of the first protective tube F1
End is connect with the first end of the thermistor RT, the second termination power cathode of the first thermistor RT, the low pass
The second end of filter LF1 is connect with the first end of the thermistor RT, the first end of the low-pass filter LF1 with it is described
The second end of thermistor RT connects, second input terminal at the third end of the low-pass filter LF1 and the rectifier bridge stack BD
Connection, the 4th end of the low-pass filter LF are connect with the first input end of the rectifier bridge stack BD, the rectifier bridge stack BD
The first output terminate the anode of the filter capacitor C, second output terminal ground connection, the anode of the filter capacitor C connects the change
Die block, cathode ground connection.
The charging module includes DC/DC converter U1 and its peripheral circuit, and the peripheral circuit includes the first triode
Q1, first resistor R1, first diode D1, the first inductance L1, second resistance R2, the second triode D2,3rd resistor R3, first
Adjustable resistance RP1, first capacitor C1, the second diode D2, third capacitor C3, the 4th resistance R4, the electricity of the 5th resistance R5 and the 4th
Hold C4, the power input of the DC/DC converter U1 is the first input end of the charging module, the DC/DC converter
The feedback pin of U1 is the second input terminal of the charging module, the output of the just extremely described charging module of the battery BT
End, the collector terminal of the DC/DC converter U1 internal switch pipe connect the base stage of the first triode Q1, and described first
The emitter of triode Q1 connects the first end of the 5th resistance R5, and the second end positive pole of the 5th resistance R5 meets institute
State the voltage output end of voltage changing module, the first resistor R1 mono- terminates the base stage of first triode, described in another termination
The first end of 5th resistance, the cathode of the first diode D1 connect the base stage of the first triode Q1, and anode connects described
The collector of one triode Q1, the collector of termination the first triode Q1 of the first inductance L1, another termination the
The first end of two resistance R2, the emitter of the second termination DC/DC converter U1 internal switch pipe of the second resistance R2
Exit, the emitter of first termination the second triode Q2 of the second resistance R2, the collection of the second triode Q2
Electrode connects the first end of the first adjustable resistance RP1, and base stage connects the 3rd resistor R3 first end and the first adjustable resistance RP1
The common node of second end, the emitter of second termination the second triode Q2 of the 3rd resistor R3, described first can
Adjust the anode of the first termination battery BT of resistance RP1, the first termination DC/DC converter U1 of the first capacitor C1
The terminals of internal timing capacitor, second end ground connection, the ground terminal ground connection of the DC/DC converter U1, second diode
The plus earth of Q2, cathode connects the common node of the first diode D1 anode Yu the first inductance L1 first end, described
The first end of third capacitor C3 is grounded, the second end of the second termination second resistance R2, the output of the DC/DC converter U1
Voltage sample terminates the first end of the 4th resistance R4, and the second end of the 4th resistance R4 is grounded, and the first of the 4th resistance
The collector of the second triode Q2 is terminated, the power input of the DC/DC converter U1 terminates positive pole, that is, change
The voltage output end of die block, the load peak current sampling of the DC/DC converter U1 terminate the of the 5th resistance R5
One end, the anode of the second termination the 4th capacitor C4 of the 5th resistance R5, the cathode ground connection of the 4th capacitor C4, institute
The collector terminal for stating DC/DC converter U1 internal drive pipe is vacant.
Preferably, the charging module further includes the 5th diode D5 and the 6th diode D6, the 5th diode D5
Anode connect the voltage output end of the i.e. described voltage changing module of positive pole, cathode connects the power input of the DC/DC converter U1
End, the anode of the 6th diode D6 connect the first end of the first adjustable resistance RP1, and cathode is meeting the battery BT just
Pole.
The voltage changing module includes the 5th capacitor C5, the 6th capacitor C6, the 7th capacitor C7, the 6th resistance R6, the second inductance
The first end of the first termination filter capacitor of L2, first switch tube Q3 and transformer T1, the 5th capacitor C5, described the
Six resistance R6 are in parallel with the 5th capacitor C5, the first input of the first termination transformer T1 of the 5th capacitor C5
End, the cathode of the second termination third diode of the 5th capacitor C5, the anode of the third diode connect the change
The second input terminal of depressor T1, the source electrode of the first switch tube Q3 connect the anode of the third diode, grounded drain, grid
PWM is met, the first output of the transformer T1 terminates the anode of the 4th diode, and second output terminal is grounded, and the described 4th
The cathode of diode connects the first end of the second inductance L2, the first termination the 6th capacitor C6's of the second inductance L2
Anode, the cathode ground connection of the 6th capacitor C6, the anode of the second termination the 7th capacitor C7 of the second inductance L2, institute
State the cathode ground connection of the 7th capacitor C7.
The switching module include the 7th diode D7, the 8th diode D8, the 9th diode D9, the 8th capacitor C8 and after
Electric appliance K1, the anode of the 7th diode D7 connect the voltage output of the i.e. described voltage changing module of second end of the second inductance L2
End, cathode meet the second end of the relay K1 switch, the anode of the first termination battery of the relay K1 switch, institute
The cathode of the first termination the 8th diode D8 of relay K1 coil is stated, second end is grounded, the 8th diode D8's
Anode connects the anode of the 8th capacitor C8, the cathode ground connection of the 8th capacitor C8, and the anode of the 8th capacitor C8 meets institute
The anode of the 7th diode D7 is stated, the anode of the 9th diode D9 connects the second end of the relay K1 coil, and cathode connects
The third of the first end of the relay K1 coil, the relay K1 switch terminates the adjustment module.
The drive module includes Light-Emitting Diode LED, switching regulator U2 and its peripheral circuit, the peripheral circuit packet
Include the 9th capacitor C9, the tenth capacitor C10, the 11st capacitor C11, the 12nd capacitor C12, the 7th resistance R7, the 8th resistance R8,
Nine resistance R9, the tenth resistance R10, eleventh resistor R11, twelfth resistor R12, the tenth diode D10, the 11st diode
D11, third inductance L3.Second protective tube F2 and second switch Q4, the anode of the 9th capacitor C9 meet the relay K1
The third end of switch, cathode ground connection, the current detecting input pin of the switching regulator U2 connect the of the tenth resistance R10
One end, the second end ground connection of the tenth resistance R10, the compensation pin of the switching regulator U2 connect the 7th resistance R7's
First end, the first end of the second termination the tenth capacitor C10 of the 7th resistance R7, the second of the tenth capacitor C10
End ground connection, the feedback pin of the switching regulator U2 connect the cathode of the 12nd diode D12 in the adjustment module, and simulation connects
Ground pin ground connection, power ground foot ground connection, driving pin connect the first end of the 9th resistance R9, and the of the 9th resistance R9
The first end of two termination the tenth resistance R10, the frequency adjustment of the switching regulator U2 and shutdown pin connect the described 8th
The first end of resistance R8, the second end ground connection of the 8th resistance R8, the power input pin of the switching regulator U2 meet institute
State the first end of third inductance L3, the anode of the second termination the 11st diode D11 of the third inductance L3, described the
The cathode of 11 diode D11 connects the first end of the 11st capacitor C11, and the second end of the 11st capacitor C11 is grounded,
The anode of the 12nd capacitor C12 meets the first end of the 11st capacitor C11, cathode ground connection, the eleventh resistor R11
The first termination the 12nd capacitor C12 anode, the second termination twelfth resistor of the eleventh resistor R11
The first end of R12, the second end ground connection of the twelfth resistor R12, the first termination the described tenth of the second protective tube F2
The first end of one resistance R11, the anode of the second termination Light-Emitting Diode LED of the second protective tube F2 are described to shine
The cathode of diode LED connects the non-inverting input terminal of comparator U3 in the adjustment module, and the anode of the tenth diode D10 connects
The common node of the twelfth resistor R12 first end and the eleventh resistor R11 second end, cathode connect the switch voltage-stabilizing
The feedback pin of pipe.
The adjustment module includes the 12nd diode D12, thirteenth resistor R13, the 14th resistance R14, the 15th electricity
Hinder R15, the 16th resistance R16, the 17th resistance R17, the 18th resistance R18, comparator U3 and third switching tube Q5, the ratio
Power input compared with device U3 terminates the third end of the relay K1 switch, and ground terminal ground connection, homophase input termination is described to shine
The cathode of diode LED, reverse input end connect the first end of the 16th resistance R16, and the second of the 16th resistance R16
End ground connection, the output of the comparator U3 terminate the anode of the 12nd diode D12, the 12nd diode D12's
Cathode connects the feedback pin of the i.e. described switch voltage-stabilizing pipe U2 of the second input terminal of charging module, and the of the thirteenth resistor R13
The cathode of one termination the 12nd diode D12, the reverse phase of the second termination comparator U3 of the thirteenth resistor R13
Input terminal, the non-inverting input terminal of the first termination comparator U3 of the 14th resistance R14, the 14th resistance R14
Second end ground connection, the non-inverting input terminal of the first termination comparator U3 of the 15th resistance R15, the 15th electricity
Hinder the drain electrode of the second termination third switching tube Q5 of R15, the source electrode ground connection of the third switching tube Q5, grid connects described the
The first end of 18 resistance R18, the second termination the 8th diode D8 of the 18th resistance R18 and the 9th 2 pole
The common node of pipe D9 cathode, the first termination third switching tube Q5 grid and described 18 of the 17th resistance R17
The common node of resistance first end, the second end ground connection of the 17th resistance R17.
First triode and the second triode are PNP type triode.
The model MC34063 of the DC/DC converter U1.
The model LM3478 of the switching regulator U2.
The working principle of the present embodiment control circuit is as follows:
After alternating current powers on, each element of circuit enters working condition, and alternating current rectified filtering forms low-pressure direct after transformation processing
Galvanic electricity V+.V+ point is two-way, and a-road-through overcharge module charges the battery, all the way by switching module make relay switch throw in
B point is powered to drive module by main electricity V+, lights lamps and lanterns, at this point, Q5 is connected in adjustment module, R14, R15 are parallel to electric current
In detection circuit, resistance is smaller, and the non-inverting input terminal of comparator U3 i.e. the 5th foot voltage is lower, and output end exports low level, feedback
Switching regulator U1 into drive module, makes its output end high current, and the LED of lamps and lanterns is in floodlighting state.Work as city
After electricity power-off, V+ loss of voltage, switching module throws relay switch in a point, is powered, is lighted to drive module by battery BT
Lamps and lanterns, at this point, Q5 is not turned in adjustment module, only R14 is in current detection circuit, and resistance is larger, and the 5th of comparator U3 the
Foot voltage is higher, and output end exports high level, feeds back the switching regulator U1 into drive module, makes the small electricity of its output end
Stream, the LED of lamps and lanterns is in low light illuminant state, to extend the lamps and lanterns emergency lighting time.
It should be noted that all the embodiments in this specification are described in a progressive manner, each embodiment weight
Point explanation is all differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.
For device embodiment, since it is basically similar to the method embodiment, so being described relatively simple, related place referring to
The part of embodiment of the method illustrates.
Description through the foregoing embodiment, the invention has the following advantages that
When alternating current is normal, charging module is battery charging, switches to battery by switching module in municipal power failure as driving
Module for power supply, driving lamps and lanterns work, and provide larger current power supply when alternating current is normal by adjustment module and mentioned in municipal power failure
It powers for smaller current, to realize the output power that can be automatically controled emergency light, the use of lamps and lanterns is promoted in Emergency use
Duration, because of electric current and power is larger leads to emergency service time shorter problem when avoiding the power supply of emergency light battery.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the program can be stored in a computer-readable storage medium
In, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic
Dish, CD, read-only memory (Read-Only Memory, abbreviation ROM) or random access memory (Random
Access Memory, abbreviation RAM) etc..
The above disclosure is only the preferred embodiments of the present invention, cannot limit the right model of the present invention with this certainly
It encloses, therefore equivalent changes made in accordance with the claims of the present invention, is still within the scope of the present invention.
Claims (10)
1. a kind of control circuit characterized by comprising
Charging module is connect with positive pole, for adjusting the supply voltage received, is charged for battery；
Switching module is connect with the charging module, in power failure, switching to battery power supply, when power supply is normal,
Switch to power supply power supply；
Drive module is connect, for driving Light-Emitting Diode to work with the switching module；
Adjustment module is connect with the light emitting diode and the drive module, for the power supply according to the Light-Emitting Diode
The brightness of status adjustment lamps and lanterns,
Wherein, the switching module includes the 7th diode, the 8th diode, the 9th diode, the 8th capacitor and relay, institute
The anode for stating the 7th diode connects positive pole, and cathode connects the second end of the relay switch, and the of the relay switch
The anode of the one termination battery, the cathode of the first termination the 8th diode of the relay coil, second end ground connection,
The anode of 8th diode connects the anode of the 8th capacitor, the cathode ground connection of the 8th capacitor, the 8th capacitor
Anode connect the anode of the 7th diode, the anode of the 9th diode connects the second end of the relay coil, bears
Pole connects the first end of the relay coil, and the third of the relay switch terminates the adjustment module；
The adjustment module include the 12nd diode, thirteenth resistor, the 14th resistance, the 15th resistance, the 16th resistance,
17th resistance, the 18th resistance, comparator and third switching tube, the power input of the comparator terminate the relay and open
The third end of pass, ground terminal ground connection, homophase input terminate the cathode of the Light-Emitting Diode, and reverse input end connects the described 16th
The first end of resistance, the second end ground connection of the 16th resistance, the output of the comparator terminate the 12nd diode
Anode, the cathode of the 12nd diode connects the second input terminal of the charging module, the first of the thirteenth resistor
Terminate the cathode of the 12nd diode, the inverting input terminal of the second termination comparator of the thirteenth resistor, institute
The non-inverting input terminal of the first termination comparator of the 14th resistance is stated, the second end ground connection of the 14th resistance is described
The second termination third of the non-inverting input terminal of the first termination comparator of the 15th resistance, the 15th resistance is opened
The drain electrode of pipe, the source electrode ground connection of the third switching tube are closed, grid connects the first end of the 18th resistance, the 18th electricity
The common node of second termination the 8th diode and the 9th diode cathode of resistance, the first of the 17th resistance
Terminate the common node of third the switch tube grid and the 18 resistance first end, the second termination of the 17th resistance
Ground.
2. circuit as described in claim 1, which is characterized in that the charging module includes DC/DC converter and its periphery electricity
Road, the peripheral circuit include the first triode, first resistor, first diode, the first inductance, second resistance, the two or three pole
Pipe, 3rd resistor, the first adjustable resistance, first capacitor, the second diode, third capacitor, the 4th resistance, the 5th resistance and the 4th
Capacitor, the power input of the DC/DC converter are the first input end of the charging module, the DC/DC converter
Feedback pin is the second input terminal of the charging module, and the output end of the just extremely described charging module of the battery is described
The collector terminal of DC/DC converter inside switching tube connects the base stage of first triode, the hair of first triode
Emitter-base bandgap grading connects the first end of the 5th resistance, the second termination positive pole of the 5th resistance, the first resistor one
The base stage of first triode, the first end of another termination the 5th resistance are terminated, the cathode of the first diode connects
The base stage of first triode, anode connect the collector of first triode, a termination of first inductance described the
The collector of one triode, the first end of another termination second resistance, the DC/DC conversion of the second termination of the second resistance
The emitter exit of device internal switch pipe, the emitter of the first termination second triode of the second resistance and described
The collector of the common node of third capacitor second end, second triode connects the first end of the first adjustable resistance, and base stage connects
The common node of the 3rd resistor first end and the first adjustable resistance second end, the second termination institute of the 3rd resistor
The emitter of the second triode is stated, the first of first adjustable resistance terminates the anode of the battery, the first capacitor
The terminals of the first termination DC/DC converter inside timing capacitor, second end ground connection, the ground connection of the DC/DC converter
End ground connection, the plus earth of second diode, cathode connect the first diode anode and the first inductance first end
Common node, the first end ground connection of the third capacitor, the first end of the second termination second resistance, the DC/DC turns
The first end of output voltage sampling the 4th resistance of termination of parallel operation, the second end of the 4th resistance is grounded, described in the first termination
The collector of second triode, the power input of the DC/DC converter terminate positive pole, and the DC/DC converter is born
The first end that peak point current sampling terminates the 5th resistance is carried, the second termination the 4th capacitor of the 5th resistance is just
Pole, the cathode ground connection of the 4th capacitor, the collector terminal of the DC/DC converter inside driving tube are vacant.
3. circuit as claimed in claim 2, which is characterized in that the charging module further includes the 5th diode and the six or two pole
Pipe, the anode of the 5th diode connect positive pole, and cathode connects the power input of the DC/DC converter, and the described 6th
Diode is arranged between first adjustable resistance and the battery, and it is adjustable that the anode of the 6th diode connects described first
The second end of resistance, cathode connect the anode of the battery.
4. circuit as described in claim 1, which is characterized in that the drive module includes switching regulator and its periphery electricity
Road, the peripheral circuit include the 9th capacitor, the tenth capacitor, the 11st capacitor, the 12nd capacitor, the 7th resistance, the 8th resistance,
9th resistance, the tenth resistance, eleventh resistor, twelfth resistor, the tenth diode, the 11st diode, third inductance, second
The anode of protective tube and second switch, the 9th capacitor connects the power input pin and the third of the switching regulator
The common node of the first end of inductance, cathode ground connection, the current detecting input pin of the switching regulator connect the tenth electricity
The first end of resistance, the second end ground connection of the tenth resistance, the compensation pin of the switching regulator connect the 7th resistance
First end, the first end of the second termination the tenth capacitor of the 7th resistance, the second end ground connection of the tenth capacitor, institute
The feedback pin for stating switching regulator connects the cathode of the 12nd diode in the adjustment module, analogue ground pin ground connection, electricity
Source grounding leg ground connection, driving pin connect the first end of the 9th resistance, the second termination of the 9th resistance the tenth electricity
The first end of resistance, the frequency adjustment of the switching regulator and shutdown pin connect the first end of the 8th resistance, and the described 8th
The second end of resistance is grounded, and the power input pin of the switching regulator connects the first end of the third inductance, the third
The anode of second termination the 11st diode of inductance, the cathode of the 11st diode connect the 11st capacitor
First end, the second end ground connection of the 11st capacitor, the anode of the 12nd capacitor connect the first of the 11st capacitor
End, cathode ground connection, the anode of the first termination the 12nd capacitor of the eleventh resistor, the second of the eleventh resistor
Terminate the first end of the twelfth resistor, the second end ground connection of the twelfth resistor, the first end of second protective tube
Connect the first end of the eleventh resistor, the anode of the second termination Light-Emitting Diode of second protective tube, described the
The source electrode of two switching tubes connects the first end of the tenth resistance, and drain electrode connects the third inductance second end and the 11st pole
The common node of pipe anode, grid connect the driving pin of the switching regulator, and the cathode of the Light-Emitting Diode connects the tune
The non-inverting input terminal of comparator in module is saved, the anode of the tenth diode connects the twelfth resistor first end and described the
The common node of 11 resistance second ends, cathode connect the feedback pin of the switch voltage-stabilizing pipe.
5. circuit as described in claim 1, which is characterized in that the circuit further include:
Rectification filtering module is connect with the anode and cathode of power supply, for carrying out rectifying and wave-filtering processing to supply voltage, will be exchanged
Voltage is converted to direct voltage output；
Voltage changing module is connect with the rectification filtering module, the value of the DC voltage for exporting the rectification filtering module
It adjusts to the value of circuit voltage.
6. circuit as claimed in claim 5, which is characterized in that the rectification filtering module includes thermistor, the first insurance
Pipe, low-pass filter, rectifier bridge stack and filter capacitor, the first protective tube first end are connect with positive pole, and described first
Protective tube second end is connect with the first end of the thermistor, the second termination power cathode of the thermistor, described low
The second end of bandpass filter and the first end of thermistor connect, the first end of the low-pass filter and the thermistor
Second end connection, the third end of the low-pass filter are connect with the second input terminal of the rectifier bridge stack, the low-pass filtering
4th end of device is connect with the first input end of the rectifier bridge stack, and the first output of the rectifier bridge stack terminates the filtered electrical
The anode of appearance, second output terminal ground connection, the anode of the filter capacitor connect the voltage changing module, cathode ground connection.
7. circuit as claimed in claim 6, which is characterized in that the voltage changing module includes the 5th capacitor, the 6th capacitor, the 7th
Capacitor, the 6th resistance, the second inductance, first switch tube and transformer, the first termination filter capacitor of the 5th capacitor
First end, the 6th resistance is in parallel with the 5th capacitor, and the first termination transformer of the 5th capacitor is just
Pole, the cathode of the second termination third diode of the 5th capacitor, the anode of the third diode connect the transformation
Second input terminal of device, the source electrode of the first switch tube connect the anode of the third diode, grounded drain, and grid meets PWM,
First output of the transformer terminates the anode of the 4th diode, and second output terminal is grounded, the 4th diode
Cathode connects the first end of second inductance, the anode of the first termination the 6th capacitor of second inductance, and the described 6th
The cathode of capacitor is grounded, and the anode of the second termination the 7th capacitor of second inductance, the cathode of the 7th capacitor connects
Ground.
8. circuit as claimed in claim 2, which is characterized in that first triode and the second triode are positive-negative-positive three
Pole pipe.
9. circuit as claimed in claim 2, which is characterized in that the model MC34063 of the DC/DC converter.
10. circuit as claimed in claim 4, which is characterized in that the model LM3478 of the switching regulator.
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| CN201310390744.4A CN104427698B (en) | 2013-08-31 | 2013-08-31 | A kind of control circuit |
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| CN201310390744.4A CN104427698B (en) | 2013-08-31 | 2013-08-31 | A kind of control circuit |
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| CN104427698A CN104427698A (en) | 2015-03-18 |
| CN104427698B true CN104427698B (en) | 2019-02-05 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106610668B (en) * | 2015-10-23 | 2019-10-29 | 深圳格林德能源集团有限公司 | A kind of device improving electronic Self-Balancing vehicle balance quality |
| CN107919805B (en) * | 2016-07-05 | 2023-11-17 | 杭州电子科技大学 | Compensation power supply circuit for subway stray current simulation device |
| CN107420828A (en) * | 2017-07-19 | 2017-12-01 | 徐州众仁灯具有限公司 | A kind of emergency light of embedded ceiling |
| CN108322960A (en) * | 2017-12-28 | 2018-07-24 | 宁波丽安电子有限公司 | A kind of band protection and self-powered LED power circuit |
| CN111669872A (en) * | 2020-06-24 | 2020-09-15 | 北京模电半导体有限公司 | LED emergency lighting controller integrated circuit with selectable brightness |
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| CN101742783A (en) * | 2010-01-21 | 2010-06-16 | 海洋王照明科技股份有限公司 | High power LED drive circuit with emergency function |
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| CN103037560A (en) * | 2011-09-30 | 2013-04-10 | 海洋王照明科技股份有限公司 | Automatic dimming emergency lamp |
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| CN101742783A (en) * | 2010-01-21 | 2010-06-16 | 海洋王照明科技股份有限公司 | High power LED drive circuit with emergency function |
| CN101820223A (en) * | 2010-04-28 | 2010-09-01 | 海洋王照明科技股份有限公司 | Battery booster circuit, lamp control circuit and emergency lamp |
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