CN104682542A - Emergency illumination lamp control circuit - Google Patents
Emergency illumination lamp control circuit Download PDFInfo
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- CN104682542A CN104682542A CN201310627614.8A CN201310627614A CN104682542A CN 104682542 A CN104682542 A CN 104682542A CN 201310627614 A CN201310627614 A CN 201310627614A CN 104682542 A CN104682542 A CN 104682542A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The invention relates to an emergency illumination lamp control circuit, which comprises a voltage conversion unit, a detecting unit, a control unit, a switch unit and a power supply priority selecting unit, wherein the voltage conversion unit is used for converting an alternating current power supply into a direct current power supply, and is connected with a common use power supply and a standby power supply, the detecting unit is used for detecting whether the power supply of the common use power supply is normal or not, the control unit is used for outputting a first control signal and a second control signal according to the detecting result of the detecting unit, the switch unit is used for carrying out switching-on and switching-off action according to the first control signal and the second control signal, the power supply priority selecting unit is used for limiting the use priority of the common use power supply and the standby power supply, when the power supply priority selecting unit realizes the limitation effect for preferentially adopting the common use power supply as a power supplying power supply of a lamp, only the common use power supply is used as the power supplying power supply, and if no limitation exists, the common use power supply and the standby power supply are switched for supplying power to the circuit. The emergency illumination lamp control circuit has the advantages that the power supply of two paths of commercial power supplies can be realized, and the illumination requirements of special occasions are ensured.
Description
Technical field
The present invention relates to control circuit, particularly relate to emergency lighting lamp control circuit.
Background technology
Emergency lighting is in production, vital status is played in life, as fire fighting passageway emergency light, fire escape route marker lamp, building etc. possess the occasion of two-way Power supply, when a road power outage, need light fixture can automatically switch on another road power supply as requested, meet and continue continuous illumination demand.Existing fire-fighting class emergency luminaire or beacon lamp, use single-chip microcomputer is integrated into the mode in power control loop, and cost is higher.And in prior art, the light fixture basic Dou Shi mono-road civil power of dual power supply, the battery-powered emergency luminaire of a road standby electricity, does not have two-way to be all the lamp controller of civil power, so just cannot meet the lighting demand at some special occasions.
Summary of the invention
The technical problem to be solved in the present invention is the deficiency overcoming the existence of above-mentioned prior art, and a kind of emergency lighting lamp control circuit is proposed, it can the dual power supply of lamp control circuit be not that two-way is all civil power and causes the problem of the lighting demand that cannot meet at some special occasions in prior art.
For solving the problems of the technologies described above, the present invention proposes a kind of emergency lighting lamp control circuit, it comprises: voltage transformation module, it is for being converted to DC power supply AC power, it comprises: first input end, the second input and output, first input end, second input of voltage transformation module connect conventional power supply and stand-by power supply respectively, the output output dc voltage of voltage transformation module, detecting unit, it is for detecting conventional power supply whether normal power supply, it comprises first detection module and the second detection module, first detection module comprises input and output, second detection module comprises input, the first output and the second output, the input of first detection module receives the output of the conventional power supply after over commutation, and the input of the second detection module receives the output of the stand-by power supply after over commutation, power supply priority selector unit, it is for limiting the priority of conventional power supply and stand-by power supply use, it comprises: first input end, the second input and output, the first input end of power supply priority selector unit connects the output of first detection module, second input of power supply priority selector unit connects the second output of the second detection module, the output head grounding of power supply priority selector unit, control unit, it is for exporting the first control signal and the second control signal according to the testing result of detecting unit, it comprises first input end, second input, first output, second output, 3rd output and the 4th output, the first input end of control unit connects the output of first detection module, second input of control unit connects the first output of the second detection module, first output of control unit exports the first control signal, second output of control unit exports the second control signal, wherein, first control signal and the second control signal are complementary relationship, switch element, it is for carrying out switch motion according to the first control signal and the second control signal, it comprises the first relay being controlled by the first control signal and the second relay being controlled by the second control signal, the switch of the first relay is connected between stand-by power supply and light fixture, and the switch of the second relay is connected between conventional power supply and light fixture, wherein, when power supply priority selector unit limit priority adopts the power supply of conventional power supply as light fixture, even if conventional power supply and stand-by power supply all have electricity, light fixture can only use conventional power supply as power supply, when power supply priority selector unit does not limit the priority of conventional power supply and stand-by power supply use, then can switch according to the state of conventional power supply and stand-by power supply, be specially: when detecting unit detect conventional power supply cannot normal power supply time, control unit exports the first control signal and closes with the switch controlling the first relay, stand-by power supply is powered to light fixture, when detecting unit detects conventional power supply normal power supply, control unit exports the second control signal and closes with the switch controlling the second relay, and conventional Switching Power Supply continues to power to light fixture.
Preferably, power supply priority selector unit comprises switch (S1), resistance (R16) and triode (BG2), switch (S1) comprises input, first output and the second output, the input of switch (S1) connects the second input of power supply priority selector unit, first output of switch (S1) is unsettled, one end of the second output contact resistance (R16) of switch (S1) and the base stage of triode (BG2), the other end ground connection of resistance (R16), the collector electrode of triode (BG2) connects the first input end of power supply priority selector unit, the emitter of triode (BG2) connects the output of power supply priority selector unit, wherein, when the input of switch (S1) is connected with the first output, then the conventional power supply of restriction is power supply, otherwise, conventional power supply and stand-by power supply switch as power supply.
Preferably, control unit comprises: triode (Q6), triode (Q5), resistance (R5), resistance (R1), adjustable resistance (R6), chip (IC1), electric capacity (C2), electric capacity (C4), resistance (R50), triode (Q7), resistance (R13), adjustable resistance (R14), chip (IC2), electric capacity (C5), electric capacity (C3), resistance (R60) and triode (Q8), chip (IC1) and chip (IC2) include first end, the second end, the 3rd end, the 4th end, five terminal, the 6th end and the 7th end, the emitter of triode (Q6) and triode (Q5) connects the output of voltage transformation module, the base stage of the collector electrode connecting triode (Q6) of triode (Q5), resistance (R5) is connected with between the emitter of triode (Q5) and base stage, the base stage contact resistance (R1) of triode (Q6) is afterwards to ground, second input of the collector electrode connection control unit of triode (Q6) and the second output, the collector electrode of triode (Q6) connects the first end of adjustable resistance (R6) to chip (IC1), the first end of chip (IC1) connects electric capacity (C2) afterwards to ground, second end of chip (IC1) connects first end, the three-terminal link electric capacity (C4) of chip (IC1) is afterwards to ground, 4th end ground connection of chip (IC1), 3rd output of the five terminal connection control unit of chip (IC1), 6th end of chip (IC1), second output of the equal connection control unit of the 7th end, resistance (R50) is connected between the base stage of triode (Q5) and the collector electrode of triode (Q8), the emitter of triode (Q7) connects the output of voltage transformation module, resistance (R13) is connected with between the emitter of triode (Q7) and base stage, adjustable resistance (R14) is connected with between the collector electrode of triode (Q7) and the first end of chip (IC2), the first end of chip (IC2) connects electric capacity (C3) afterwards to ground, second end of chip (IC2) connects first end, the three-terminal link electric capacity (C5) of chip (IC2) is afterwards to ground, 4th end ground connection of chip (IC2), 4th output of the five terminal connection control unit of chip (IC2), 6th end of chip (IC2), first output of the equal connection control unit of the 7th end, first output of the collector electrode connection control unit of triode (Q7), to the collector electrode of triode (Q8) after the base stage contact resistance (R60) of triode (Q7), the grounded emitter of triode (Q8), between the base stage that resistance (R20) and electric capacity (C18) are connected in parallel on triode (Q8) and ground, the first input end of the base stage connection control unit of triode (Q8).
Preferably, switch element comprise diode (D5), diode (D9), the first relay hot-wire coil (J11), be controlled by the switch module (J12) of hot-wire coil (J11), the hot-wire coil (J21) of the second relay and be controlled by the switch module (J22) of hot-wire coil (J21); Switch module (J11) and switch module (J12) include two single-pole double-throw switch (SPDT)s; First output of one end connection control unit of hot-wire coil (J11), 4th output of the other end connection control unit of hot-wire coil (J11), first output of the negative electrode connection control unit of diode (D9), 4th output of the anode connection control unit of diode (D9), the input of two single-pole double-throw switch (SPDT)s of switch module (J12) connects zero line and the live wire of stand-by power supply respectively, and the output of two single-pole double-throw switch (SPDT)s of switch module (J12) connects light fixture; Second output of one end connection control unit of hot-wire coil (J21), 3rd output of the other end connection control unit of hot-wire coil (J21), second output of the negative electrode connection control unit of diode (D5), 3rd output of the anode connection control unit of diode (D5), the input of two single-pole double-throw switch (SPDT)s of switch module (J22) connects zero line and the live wire of conventional power supply respectively, and the output of two single-pole double-throw switch (SPDT)s of switch module (J22) connects light fixture.
Preferably, first detection module comprises diode (D6), resistance (R7), adjustable resistance (RW2), electric capacity (C2), resistance (R15), resistance (R18), resistance (R17), resistance (R4), comparator (IC7), electric capacity (C16), NAND gate (IC8), NAND gate (IC6) and resistance (R12), diode (D6) is in series with successively between the input of first detection module and ground, resistance (R7) and electric capacity (C2), adjustable resistance (RW2) is in parallel with electric capacity (C2), the junction contact resistance (R15) of resistance (R7) and electric capacity (C2) is to the positive terminal of comparator (IC7), the end of oppisite phase of comparator (IC7) is connected with a reference power supply, one end of resistance (R18) connects the positive terminal of comparator (IC7), the other end of resistance (R18) connects the output of comparator (IC7) and two inputs of NAND gate (IC8), the output contact resistance (R4) of voltage transformation module is to the output of comparator (IC7), the input of NAND gate (IC8) connects electric capacity (C16) to ground, the output of NAND gate (IC8) connects the input of NAND gate (IC6), the output contact resistance (R12) of NAND gate (IC6) is to the output of first detection module.
Preferably, the second detection module comprises diode (D7), resistance (R8), adjustable resistance (RW1), electric capacity (C1), resistance (R9), resistance (R11), resistance (R10), resistance (R3), comparator (IC3), electric capacity (C14), NAND gate (IC4), NAND gate (IC5), resistance (R19), NAND gate (IC9), diode (D1), resistance (R2), resistance (R4), triode (BG1), diode (D2) and diode (D8), diode (D7) is in series with successively between the input of the second detection module and ground, resistance (R8) and electric capacity (C1), adjustable resistance (RW1) is in parallel with electric capacity (C1), the junction contact resistance (R9) of resistance (R8) and electric capacity (C1) is to the positive terminal of comparator (IC3), the end of oppisite phase of comparator (IC3) is connected with a reference power supply, one end of resistance (R11) connects the positive terminal of comparator, the other end of resistance (R11) connects the output of comparator and two inputs of NAND gate (IC4), the output contact resistance (R3) of voltage transformation module is to the output of comparator (IC3), the input of NAND gate (IC4) connects electric capacity (C14) to ground, the output of NAND gate (IC4) connects the input of NAND gate (IC5), the output contact resistance (R19) of NAND gate (IC5) is to ground, the output of NAND gate (IC5) connects the input of NAND gate (IC9), the output of NAND gate (IC9) connects the negative electrode of diode (D1), the anode contact resistance (R2) of diode (D1) is to the base stage of triode (BG1), the anode of diode (D2) connects the output of NAND gate (IC5), the negative electrode of diode (D8) is connected with the negative electrode of diode (D2), the anode of diode (D8) connects the output of the second detection module, the emitter of triode (BG1) connects the negative electrode of diode (D8), the collector electrode contact resistance (R4) of triode (BG1) is afterwards to ground.
Preferably, voltage transformation module, comprise the first rectification step-down branch road, the second rectification step-down and filtering voltage regulation unit, the input of the first rectification step-down branch road connects the first input end of voltage transformation module, the input of the second rectification step-down branch road connects the second input of voltage transformation module, the output of the first rectification step-down branch road and the second rectification step-down branch road all connects the input of filtering voltage regulation unit, and the output of the first rectification step-down branch road connects the control end of detecting unit.
Preferably, first rectification step-down branch road comprises fuse (F1), electric capacity (C7), resistance (R3), rectifier (Q3) and diode (D4), between the input that fuse (F1), electric capacity (C7), rectifier (Q3) and diode (D4) are connected to the first rectification step-down branch road in turn and output, electric capacity (C7) is in parallel with resistance (R3), and rectifier (Q3) exports the voltage of the conventional power supply after rectification with the junction of diode (D4).
Preferably, second rectification step-down branch road comprises fuse (F2), electric capacity (C6), resistance (R1), rectifier (Q4) and diode (D3), between the input that fuse (F2), electric capacity (C6), rectifier (Q4) and diode (D3) are connected to the second rectification step-down branch road in turn and output, electric capacity (C6) is in parallel with resistance (R1), and rectifier (Q4) exports the voltage of the conventional power supply after rectification with the junction of diode (D3).
Preferably, filtering voltage regulation unit comprises electric capacity (C8), electric capacity (C9), voltage stabilizing chip (IC2), electric capacity (C10) and electric capacity (C11), between the input that electric capacity (C8) and electric capacity (C9) are connected in parallel on voltage stabilizing chip (IC2) and earth terminal, between the output that electric capacity (C10) and electric capacity (C11) are connected in parallel on voltage stabilizing chip (IC2) and earth terminal.
Compared with prior art, the present invention has following beneficial effect: emergency lighting lamp control circuit of the present invention, by adopting the priority of power supply priority selector unit setting common circuit and standby voltage, and, and realize switch control rule by NAND gate and relay, when detecting unit detect conventional power supply cannot normal power supply time, control unit exports the second control signal and closes with the Backup Power Switch controlling described switch element, stand-by power supply powers to described light fixture, so just achieve, at some special occasions, there is the illumination of two-way mains powered, when a road power cut-off, emergency lighting lamp control circuit can automatically switch to another road power supply, keep light fixture continuous firing, so just meet the lighting demand of special occasions, circuit is simply easy to realize, stability is high.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of emergency lighting lamp control circuit of the present invention.
Wherein, description of reference numerals is as follows: voltage transformation module 1 first rectification step-down branch road 11 second rectification step-down branch road 12 filtering voltage regulation unit 13 detecting unit 2 control unit 3 switch element 4 power supply priority selector unit 5 light fixture P1.
Embodiment
In order to further illustrate principle of the present invention and structure, existing by reference to the accompanying drawings to a preferred embodiment of the present invention will be described in detail.
emergency lighting lamp control circuit embodiment
Refer to Fig. 1, a kind of emergency lighting lamp control circuit, it comprises: voltage transformation module 1, detecting unit 2, control unit 3, switch element 4 and power supply priority selector unit 5.
Voltage transformation module 1 comprises: first input end, the second input and output.Detecting unit 2 comprises first detection module and the second detection module, and first detection module comprises input and output, and the second detection module comprises input, the first output and the second output.Power supply priority selector unit 5 comprises: first input end, the second input and output.Control unit 3 comprises first input end, the second input, the first output, the second output, the 3rd output and the 4th output.Switch element 4 comprises the first relay being controlled by the first control signal and the second relay being controlled by the second control signal.
First input end, second input of voltage transformation module 1 connect conventional power supply and stand-by power supply respectively, the output output dc voltage of voltage transformation module 1.The input of first detection module receives the output of the conventional power supply after over commutation, and the input of the second detection module receives the output of the stand-by power supply after over commutation.The first input end of power supply priority selector unit 5 connects the output of first detection module, and the second input of power supply priority selector unit 5 connects the second output of the second detection module, the output head grounding of power supply priority selector unit 5.The first input end of control unit 3 connects the output of first detection module, second input of control unit 3 connects the first output of the second detection module, first output of control unit 3 exports the first control signal, second output of control unit 3 exports the second control signal, wherein, the first control signal and the second control signal are complementary relationship.The switch of the first relay is connected between stand-by power supply and light fixture P1, and the switch of the second relay is connected between conventional power supply and light fixture P1.
Voltage transformation module 1 is for being converted to DC power supply AC power, detecting unit 2 is for detecting conventional power supply whether normal power supply, power supply priority selector unit 5 is for limiting the priority of conventional power supply and stand-by power supply use, control unit 3 is for exporting the first control signal and the second control signal according to the testing result of detecting unit 2, and switch element 4 is for carrying out switch motion according to the first control signal and the second control signal.
Wherein, when power supply priority selector unit 5 limit priority adopts conventional power supply and the power supply as light fixture, even if conventional power supply and stand-by power supply all have electricity, light fixture P1 can only use conventional power supply as power supply, when power supply priority selector unit 5 does not limit the priority of conventional power supply and stand-by power supply use, then can switch according to the state of conventional power supply and stand-by power supply, be specially: when detecting unit 2 detect conventional power supply cannot normal power supply time, control unit 3 exports the first control signal and closes with the switch controlling the first relay, stand-by power supply is powered to light fixture P1, when detecting unit 2 detects conventional power supply normal power supply, control unit 3 exports the second control signal and closes with the switch controlling the second relay, conventional Switching Power Supply continues to power to light fixture P1.
Voltage transformation module 1, comprises the first rectification step-down branch road 11, second rectification step-down branch road 12 and filtering voltage regulation unit 13.The input of the first rectification step-down branch road 11 connects the first input end of voltage transformation module 1, the input of the second rectification step-down branch road 12 connects the second input of voltage transformation module 1, the output of the first rectification step-down branch road 11 and the second rectification step-down branch road 12 all connects the input of filtering voltage regulation unit 13, and the output of the first rectification step-down branch road 11 connects the control end of detecting unit 2.
First rectification step-down branch road 11 comprises fuse (F1), electric capacity (C7), resistance (R3), rectifier (Q3) and diode (D4).Between the input that fuse (F1), electric capacity (C7), rectifier (Q3) and diode (D4) are connected to the first rectification step-down branch road 11 in turn and output, electric capacity (C7) is in parallel with resistance (R3), and rectifier (Q3) exports the voltage A-POWER of the conventional power supply after rectification with the junction of diode (D4).
Second rectification step-down branch road 12 comprises fuse (F2), electric capacity (C6), resistance (R1), rectifier (Q4) and diode (D3).Between the input that fuse (F2), electric capacity (C6), rectifier (Q4) and diode (D3) are connected to the second rectification step-down branch road 12 in turn and output, electric capacity (C6) is in parallel with resistance (R1), and rectifier (Q4) exports the voltage B-POWER of the stand-by power supply after rectification with the junction of diode (D3).
Filtering voltage regulation unit 13 comprises electric capacity (C8), electric capacity (C9), voltage stabilizing chip (IC2), electric capacity (C10) and electric capacity (C11), between the input that electric capacity (C8) and electric capacity (C9) are connected in parallel on voltage stabilizing chip (IC2) and earth terminal, between the output that electric capacity (C10) and electric capacity (C11) are connected in parallel on voltage stabilizing chip (IC2) and earth terminal.
In the present embodiment, voltage stabilizing chip (IC2) is chip 7812.
First detection module 21 comprises diode (D6), resistance (R7), adjustable resistance (RW2), electric capacity (C2), resistance (R15), resistance (R18), resistance (R17), resistance (R4), comparator (IC7), electric capacity (C16), NAND gate (IC8), NAND gate (IC6) and resistance (R12).
Be in series with diode (D6), resistance (R7) and electric capacity (C2) between the input of first detection module 21 and ground successively, adjustable resistance (RW2) is in parallel with electric capacity (C2).The junction contact resistance (R15) of resistance (R7) and electric capacity (C2) is to the positive terminal of comparator (IC7), and the end of oppisite phase of comparator (IC7) is connected with a reference power supply.One end of resistance (R18) connects the positive terminal of comparator, and the other end of resistance (R18) connects the output of comparator (IC7) and two inputs of NAND gate (IC8).The output contact resistance (R4) of voltage transformation module 1 is to the output of comparator (IC7), the input of NAND gate (IC8) connects electric capacity (C16) to ground, the output of NAND gate (IC8) connects the input of NAND gate (IC6), and the output contact resistance (R12) of NAND gate (IC6) is to the output of first detection module 21.
In the present embodiment, reference power supply has resistance (R2), voltage-stabiliser tube (DW1) and resistance (R17).One end of resistance (R2) connects the output of this change in voltage unit 1, and the other end of resistance (R2) connects voltage-stabiliser tube (DW1) ground connection afterwards, to the end of oppisite phase of this comparator (IC7) after the negative electrode contact resistance (R17) of voltage-stabiliser tube (DW1).Like this by the mode of dividing potential drop just for this comparator (IC7) provides a constant voltage.
In other embodiments, reference power supply can be a constant voltage.
Second detection module 22 comprises diode (D7), resistance (R8), adjustable resistance (RW1), electric capacity (C1), resistance (R9), resistance (R11), resistance (R3), comparator (IC3), electric capacity (C14), NAND gate (IC4), NAND gate (IC5), resistance (R19), NAND gate (IC9), diode (D1), resistance (R2), resistance (R4), triode (BG1), diode (D2) and diode (D8).
Be in series with diode (D7), resistance (R8) and electric capacity (C1) between the input of the second detection module 22 and ground successively, adjustable resistance (RW1) is in parallel with electric capacity (C1).The junction contact resistance (R9) of resistance (R8) and electric capacity (C1) is to the positive terminal of comparator (IC3), and the end of oppisite phase of comparator (IC3) is connected with a reference power supply, and one end of resistance (R11) connects the positive terminal of comparator.The other end of resistance (R11) connects the output of comparator and two inputs of NAND gate (IC4), and the output contact resistance (R3) of voltage transformation module 1 is to the output of comparator (IC3).The input of NAND gate (IC4) connects electric capacity (C14) to ground, the output of NAND gate (IC4) connects the input of NAND gate (IC5), the output contact resistance (R19) of NAND gate (IC5) is to ground, the output of NAND gate (IC5) connects the input of NAND gate (IC9), and the output of NAND gate (IC9) connects the negative electrode of diode (D1).The anode contact resistance (R2) of diode (D1) is to the base stage of triode (BG1), and the anode of diode (D2) connects the output of NAND gate (IC5).The negative electrode of diode (D8) is connected with the negative electrode of diode (D2), the anode of diode (D8) connects the output of the second detection module 22, the emitter of triode (BG1) connects the negative electrode of diode (D8), and the collector electrode contact resistance (R4) of triode (BG1) is afterwards to ground.
In the present embodiment, reference power supply has resistance (R2), voltage-stabiliser tube (DW1) and resistance (R10).One end of resistance (R2) connects the output of this change in voltage unit 1, and the other end of resistance (R2) connects voltage-stabiliser tube (DW1) ground connection afterwards, to the end of oppisite phase of this comparator (IC3) after the negative electrode contact resistance (R10) of voltage-stabiliser tube (DW1).Like this by the mode of dividing potential drop just for this comparator (IC3) provides a constant voltage.
In other embodiments, reference power supply can be a constant voltage.
Control unit 3 comprises: triode (Q6), triode (Q5), resistance (R5), resistance (R1), adjustable resistance (R6), chip (IC1), electric capacity (C2), electric capacity (C4), resistance (R50), triode (Q7), resistance (R13), adjustable resistance (R14), chip (IC2), electric capacity (C5), electric capacity (C3), resistance (R60) and triode (Q8).Chip (IC1) and chip (IC2) include first end, the second end, the 3rd end, the 4th end, five terminal, the 6th end and the 7th end.
The emitter of triode (Q6) and triode (Q5) connects the output of voltage transformation module 1, and the base stage of the collector electrode connecting triode (Q6) of triode (Q5), is connected with resistance (R5) between the emitter of triode (Q5) and base stage.The base stage contact resistance (R1) of triode (Q6) is afterwards to ground, second input of the collector electrode connection control unit 3 of triode (Q6) and the second output, the collector electrode of triode (Q6) connects the first end of adjustable resistance (R6) to chip (IC1).The first end of chip (IC1) connects electric capacity (C2) afterwards to ground, second end of chip (IC1) connects first end, the three-terminal link electric capacity (C4) of chip (IC1) is afterwards to ground, 4th end ground connection of chip (IC1), 3rd output of the five terminal connection control unit 3 of chip (IC1), the 6th end of chip (IC1), the 7th end all connect the second output of described control unit.
Resistance (R50) is connected between the base stage of triode (Q5) and the collector electrode of triode (Q8), the emitter of triode (Q7) connects the output of voltage transformation module 1, be connected with resistance (R13) between the emitter of triode (Q7) and base stage, between the collector electrode of triode (Q7) and the first end of chip (IC2), be connected with adjustable resistance (R14).The first end of chip (IC2) connects electric capacity (C3) afterwards to ground, second end of chip (IC2) connects first end, the three-terminal link electric capacity (C5) of chip (IC2) is afterwards to ground, 4th end ground connection of chip (IC2), 4th output of the five terminal connection control unit 3 of chip (IC2), the 6th end of chip (IC2), the 7th end all connect the first output of described control unit.
First output of the collector electrode connection control unit 3 of triode (Q7), to the collector electrode of triode (Q8) after the base stage contact resistance (R60) of triode (Q7), the grounded emitter of triode (Q8), between the base stage that resistance (R20) and electric capacity (C18) are connected in parallel on triode (Q8) and ground, the first input end of the base stage connection control unit 3 of triode (Q8).
In the present embodiment, chip (IC1) and chip (IC2) are chip NE555, the pin 6,2,5,1,4,8 of the corresponding chip NE555 of its first end, the second end, the 3rd end, the 4th end, five terminal, the 6th end and the 7th end.
Switch element 4 comprise diode (D5), diode (D9), the first relay hot-wire coil (J11), be controlled by the switch module (J12) of hot-wire coil (J11), the hot-wire coil (J21) of the second relay and be controlled by the switch module (J22) of hot-wire coil (J21).Switch module (J11) and switch module (J12) include two single-pole double-throw switch (SPDT)s.
First output of one end connection control unit 3 of hot-wire coil (J11), 4th output of the other end connection control unit 3 of hot-wire coil (J11), first output of the negative electrode connection control unit 3 of diode (D9), the 4th output of the anode connection control unit of diode (D9).The input of two single-pole double-throw switch (SPDT)s of switch module (J12) connects zero line and the live wire of stand-by power supply respectively, and the output of two single-pole double-throw switch (SPDT)s of switch module (J12) connects light fixture P1.Second output of one end connection control unit 3 of hot-wire coil (J21), 3rd output of the other end connection control unit 3 of hot-wire coil (J21), second output of the negative electrode connection control unit 3 of diode (D5), the 3rd output of the anode connection control unit of diode (D5).The input of two single-pole double-throw switch (SPDT)s of switch module (J22) connects zero line and the live wire of conventional power supply respectively, and the output of two single-pole double-throw switch (SPDT)s of switch module (J22) connects light fixture P1.
Power supply priority selector unit 5 comprises switch (S1), resistance (R16) and triode (BG2).Switch (S1) comprises input, the first output and the second output, the input of switch (S1) connects the second input of power supply priority selector unit 5, first output of switch (S1) is unsettled, one end of the second output contact resistance (R16) of switch (S1) and the base stage of triode (BG2).The other end ground connection of resistance (R16), the collector electrode of triode (BG2) connects the first input end of power supply priority selector unit 5, the emitter of triode (BG2) connects the output of power supply priority selector unit 5, wherein, when the input of switch (S1) is connected with the first output, then the conventional power supply of restriction is power supply, otherwise conventional power supply and stand-by power supply switch as power supply.
Operation principle of the present invention is described in detail below in conjunction with Fig. 1.
Voltage transformation module: two-way power supply passes through fuse, the resistance-capacitance depressurization that resistance and electric capacity form, full-wave rectification, diode-isolated (can ensure that two-way power supply does not interact like this, even if a road power-off, an other road still can power for controller), for subordinate's circuit provides 12V direct voltage after voltage stabilizing chip (IC2) voltage stabilizing.
Detecting unit: for a wherein road, the voltage of the conventional power supply after rectification is through diode (D6) isolation, and resistance (R7) and adjustable resistance (RW2) dividing potential drop, after electric capacity (C2) filtering, be added to the in-phase end of comparator (IC7) through resistance (R15), end of oppisite phase is connected to reference voltage.When conventional power supply does not have electricity or Voltage Drop to certain value; comparator (IC7) exports and becomes low level; here output is fed back to input by resistance (R18); comparator (IC7) is made to have lag function; cause comparator to export frequent variations when avoiding supply voltage to fluctuate near the protection point arranged, cause rear class control circuit frequent movement.The detection of stand-by power supply and conventional power supply are in like manner.
Control unit: conventional power supply and stand-by power supply judge to output signal after resistance (R19) and resistance (R12) isolation together with output to triode (Q8) base stage control its whether conducting, resistance (R20) base stage pull down resistor, electric capacity (C18) is as the existence of bypass filter capacitor allow the switch of triode (Q8) become more reliable and have certain time-delay.Triode (Q6), triode (Q7) respectively control relay carry out switch control rule to two-way power supply, determine by which road power supply powering load.Triode (Q5) makes two control relay circuits form electrical interlocks circuit structure, ensures that two relay synchronizations only have an adhesive, so just only has a road power supply to power to light fixture.Resistance (R6), electric capacity (C13), resistance (R14), electric capacity (C15), composition RC absorbing circuit, when triode (Q6), triode (Q7) state variation, relay Time Delay Opening and shutoff, the electric arc of avoiding relay inside to get an electric shock does not extinguish and the adhesive of another relay, causes two-way power supply short circuit to burn insurance like this.NE555 and periphery variable resistor, the output control circuit that the time delay of electric capacity composition is adjustable, when triode (Q6), triode (Q7) state variation, the adhesive of NE555 time-delay relay, this delayed time, R12 regulated by adjustable resistance R6.The electric arc of avoiding relay inside to get an electric shock does not extinguish and the adhesive of another relay, causes two-way power supply short circuit to burn insurance like this.
Power supply priority selector unit: switch (S1), resistance (R16) and triode (BG2) form power supply priority function selection function, when the input of switch (S1) is connected with the first output, controller has conventional power supply priority function, when two-way power supply is all normal, can only by conventional power supply powering load; When being connected with the second output when the input of switch (S1), two-way power supply without priority point, cause detecting unit output level step-down control relay to be switched to stand-by power supply powering when conventional power cut-off or voltage reduce.
Compared with prior art, the present invention has following beneficial effect: emergency lighting lamp control circuit of the present invention, by adopting the priority of power supply priority selector unit setting common circuit and standby voltage, and drive relay by the cooperation of triode and control chip, realize the switching of conventional power supply and power supply, ensure that the continual illumination of light fixture, and two triodes at the same time can only one can conducting, the same time only have one can conducting, ensure that two relay synchronizations only have an action, avoid misoperation to cause two-way power supply to power simultaneously, there is power supply short circuit, cause security incident, also the reliability that rear class controls is guaranteed, and circuit is simply easy to realize, stability is high.
These are only better possible embodiments of the present invention, not limit the scope of the invention, all utilizations specification of the present invention and the change of the equivalent structure done by accompanying drawing content, be all included in protection scope of the present invention.
Claims (10)
1. an emergency lighting lamp control circuit, is characterized in that, it comprises:
Voltage transformation module, it is for being converted to DC power supply AC power, it comprises: first input end, the second input and output, first input end, second input of described voltage transformation module connect conventional power supply and stand-by power supply respectively, the output output dc voltage of described voltage transformation module;
Detecting unit, it is for detecting described conventional power supply whether normal power supply, it comprises first detection module and the second detection module, described first detection module comprises input and output, described second detection module comprises input, the first output and the second output, the input of described first detection module receives the output of the described conventional power supply after over commutation, and the input of described second detection module receives the output of the described stand-by power supply after over commutation;
Power supply priority selector unit, it is for limiting the priority of described conventional power supply and stand-by power supply use, it comprises: first input end, the second input and output, the first input end of described power supply priority selector unit connects the output of described first detection module, second input of described power supply priority selector unit connects the second output of described second detection module, the output head grounding of described power supply priority selector unit;
Control unit, it is for exporting the first control signal and the second control signal according to the testing result of described detecting unit, it comprises first input end, second input, first output, second output, 3rd output and the 4th output, the first input end of described control unit connects the output of described first detection module, second input of described control unit connects the first output of described second detection module, first output of described control unit exports described first control signal, second output of described control unit exports described second control signal, wherein, described first control signal and the second control signal are complementary relationship,
Switch element, it is for carrying out switch motion according to described first control signal and the second control signal, it comprises the first relay being controlled by described first control signal and the second relay being controlled by described second control signal, the switch of described first relay is connected between described stand-by power supply and light fixture, and the switch of described second relay is connected between described conventional power supply and light fixture;
Wherein, when described power supply priority selector unit limit priority adopts the power supply of described conventional power supply as described light fixture, even if described conventional power supply and stand-by power supply all have electricity, described light fixture can only use described conventional power supply as power supply, when described power supply priority selector unit does not limit the priority of described conventional power supply and stand-by power supply use, then can switch according to the state of described conventional power supply and stand-by power supply, be specially: when described detecting unit detect described conventional power supply cannot normal power supply time, described control unit exports the first control signal and closes with the switch controlling described first relay, described stand-by power supply powers to described light fixture, when described detecting unit detects described conventional power supply normal power supply, described control unit exports the second control signal and closes with the switch controlling described second relay, described conventional Switching Power Supply continues to power to described light fixture.
2. emergency lighting lamp control circuit as claimed in claim 1, it is characterized in that, described power supply priority selector unit comprises switch (S1), resistance (R16) and triode (BG2), described switch (S1) comprises input, first output and the second output, the input of described switch (S1) connects the second input of described power supply priority selector unit, first output of described switch (S1) is unsettled, second output of described switch (S1) connects one end of described resistance (R16) and the base stage of triode (BG2), the other end ground connection of described resistance (R16), the collector electrode of described triode (BG2) connects the first input end of described power supply priority selector unit, the emitter of described triode (BG2) connects the output of described power supply priority selector unit, wherein, when the input of described switch (S1) is connected with the first output, then limiting described conventional power supply is power supply, otherwise, described conventional power supply and stand-by power supply switch as power supply.
3. emergency lighting lamp control circuit as claimed in claim 1, it is characterized in that, described control unit comprises: triode (Q6), triode (Q5), resistance (R5), resistance (R1), adjustable resistance (R6), chip (IC1), electric capacity (C2), electric capacity (C4), resistance (R50), triode (Q7), resistance (R13), adjustable resistance (R14), chip (IC2), electric capacity (C5), electric capacity (C3), resistance (R60) and triode (Q8); Chip (IC1) and chip (IC2) include first end, the second end, the 3rd end, the 4th end, five terminal, the 6th end and the 7th end;
The emitter of described triode (Q6) and triode (Q5) connects the output of described voltage transformation module, the collector electrode of described triode (Q5) connects the base stage of described triode (Q6), described resistance (R5) is connected with between the emitter of described triode (Q5) and base stage, the base stage contact resistance (R1) of described triode (Q6) is afterwards to ground, the collector electrode of described triode (Q6) connects the second input and second output of described control unit, the collector electrode of described triode (Q6) connects the first end of described adjustable resistance (R6) to chip (IC1), the first end of described chip (IC1) connects electric capacity (C2) afterwards to ground, second end of described chip (IC1) connects first end, the three-terminal link electric capacity (C4) of described chip (IC1) is afterwards to ground, 4th end ground connection of described chip (IC1), the five terminal of described chip (IC1) connects the 3rd output of described control unit, 6th end of described chip (IC1), 7th end all connects the second output of described control unit,
Described resistance (R50) is connected between the base stage of described triode (Q5) and the collector electrode of triode (Q8), the emitter of described triode (Q7) connects the output of described voltage transformation module, described resistance (R13) is connected with between the emitter of described triode (Q7) and base stage, described adjustable resistance (R14) is connected with between the collector electrode of described triode (Q7) and the first end of described chip (IC2), the first end of described chip (IC2) connects electric capacity (C3) afterwards to ground, second end of described chip (IC2) connects first end, the three-terminal link electric capacity (C5) of described chip (IC2) is afterwards to ground, 4th end ground connection of described chip (IC2), the five terminal of described chip (IC2) connects the 4th output of described control unit, 6th end of described chip (IC2), 7th end all connects the first output of described control unit, the collector electrode of described triode (Q7) connects the first output of described control unit, the base stage of described triode (Q7) connects described resistance (R60) afterwards to the collector electrode of described triode (Q8), the grounded emitter of described triode (Q8), between the base stage that described resistance (R20) and electric capacity (C18) are connected in parallel on described triode (Q8) and ground, the base stage of described triode (Q8) connects the first input end of described control unit.
4. emergency lighting lamp control circuit as claimed in claim 1, it is characterized in that, described switch element comprise diode (D5), diode (D9), the first relay hot-wire coil (J11), be controlled by the switch module (J12) of described hot-wire coil (J11), the hot-wire coil (J21) of the second relay and be controlled by the switch module (J22) of described hot-wire coil (J21); Described switch module (J11) and switch module (J12) include two single-pole double-throw switch (SPDT)s;
One end of described hot-wire coil (J11) connects the first output of described control unit, the other end of described hot-wire coil (J11) connects the 4th output of described control unit, the negative electrode of described diode (D9) connects the first output of described control unit, the anode of described diode (D9) connects the 4th output of described control unit, the input of two single-pole double-throw switch (SPDT)s of described switch module (J12) connects zero line and the live wire of stand-by power supply respectively, and the output of two single-pole double-throw switch (SPDT)s of described switch module (J12) connects light fixture; One end of described hot-wire coil (J21) connects the second output of described control unit, the other end of described hot-wire coil (J21) connects the 3rd output of described control unit, the negative electrode of described diode (D5) connects the second output of described control unit, the anode of described diode (D5) connects the 3rd output of described control unit, the input of two single-pole double-throw switch (SPDT)s of described switch module (J22) connects zero line and the live wire of conventional power supply respectively, and the output of two single-pole double-throw switch (SPDT)s of described switch module (J22) connects light fixture.
5. emergency lighting lamp control circuit as claimed in claim 1, it is characterized in that, described first detection module comprises diode (D6), resistance (R7), adjustable resistance (RW2), electric capacity (C2), resistance (R15), resistance (R18), resistance (R17), resistance (R4), comparator (IC7), electric capacity (C16), NAND gate (IC8), NAND gate (IC6) and resistance (R12);
Described diode (D6) is in series with successively between the input of described first detection module and ground, resistance (R7) and electric capacity (C2), described adjustable resistance (RW2) is in parallel with described electric capacity (C2), described resistance (R7) is connected the positive terminal of described resistance (R15) to described comparator (IC7) with the junction of electric capacity (C2), the end of oppisite phase of described comparator (IC7) is connected with a reference power supply, one end of described resistance (R18) connects the positive terminal of described comparator (IC7), the other end of described resistance (R18) connects the output of described comparator (IC7) and two inputs of described NAND gate (IC8), the output of described voltage transformation module connects the output of described resistance (R4) to described comparator (IC7), the input of described NAND gate (IC8) connects described electric capacity (C16) to ground, the output of described NAND gate (IC8) connects the input of described NAND gate (IC6), the output of described NAND gate (IC6) connects the output of described resistance (R12) to described first detection module.
6. emergency lighting lamp control circuit as claimed in claim 1, it is characterized in that, described second detection module comprises diode (D7), resistance (R8), adjustable resistance (RW1), electric capacity (C1), resistance (R9), resistance (R11), resistance (R10), resistance (R3), comparator (IC3), electric capacity (C14), NAND gate (IC4), NAND gate (IC5), resistance (R19), NAND gate (IC9), diode (D1), resistance (R2), resistance (R4), triode (BG1), diode (D2) and diode (D8);
Described diode (D7) is in series with successively between the input of described second detection module and ground, resistance (R8) and electric capacity (C1), described adjustable resistance (RW1) is in parallel with described electric capacity (C1), described resistance (R8) is connected the positive terminal of described resistance (R9) to described comparator (IC3) with the junction of electric capacity (C1), the end of oppisite phase of described comparator (IC3) is connected with a reference power supply, one end of described resistance (R11) connects the positive terminal of described comparator, the other end of described resistance (R11) connects the output of described comparator and two inputs of NAND gate (IC4), the output of described voltage transformation module connects the output of described resistance (R3) to comparator (IC3), the input of described NAND gate (IC4) connects described electric capacity (C14) to ground, the output of described NAND gate (IC4) connects the input of described NAND gate (IC5), the output of described NAND gate (IC5) connects described resistance (R19) to ground, the output of described NAND gate (IC5) connects the input of described NAND gate (IC9), the output of described NAND gate (IC9) connects the negative electrode of described diode (D1), the anode of described diode (D1) connects the base stage of described resistance (R2) to described triode (BG1), the anode of described diode (D2) connects the output of described NAND gate (IC5), the negative electrode of described diode (D8) is connected with the negative electrode of described diode (D2), the anode of described diode (D8) connects the output of described second detection module, the emitter of described triode (BG1) connects the negative electrode of described diode (D8), the collector electrode of described triode (BG1) connects described resistance (R4) afterwards to ground.
7. emergency lighting lamp control circuit as claimed in claim 1, it is characterized in that, described voltage transformation module, comprise the first rectification step-down branch road, second rectification step-down and filtering voltage regulation unit, the input of described first rectification step-down branch road connects the first input end of described voltage transformation module, the input of described second rectification step-down branch road connects the second input of described voltage transformation module, the output of described first rectification step-down branch road and the second rectification step-down branch road all connects the input of described filtering voltage regulation unit, the output of described first rectification step-down branch road connects the control end of described detecting unit.
8. emergency lighting lamp control circuit as claimed in claim 6, it is characterized in that, described first rectification step-down branch road comprises fuse (F1), electric capacity (C7), resistance (R3), rectifier (Q3) and diode (D4), described fuse (F1), electric capacity (C7), between the input that rectifier (Q3) and diode (D4) are connected to described first rectification step-down branch road in turn and output, described electric capacity (C7) is in parallel with described resistance (R3), described rectifier (Q3) exports the voltage of the described conventional power supply after rectification with the junction of diode (D4).
9. emergency lighting lamp control circuit as claimed in claim 6, it is characterized in that, described second rectification step-down branch road comprises fuse (F2), electric capacity (C6), resistance (R1), rectifier (Q4) and diode (D3), described fuse (F2), electric capacity (C6), between the input that rectifier (Q4) and diode (D3) are connected to described second rectification step-down branch road in turn and output, described electric capacity (C6) is in parallel with described resistance (R1), described rectifier (Q4) exports the voltage of the described conventional power supply after rectification with the junction of diode (D3).
10. emergency lighting lamp control circuit as claimed in claim 6, it is characterized in that, described filtering voltage regulation unit comprises electric capacity (C8), electric capacity (C9), voltage stabilizing chip (IC2), electric capacity (C10) and electric capacity (C11), between the input that described electric capacity (C8) and electric capacity (C9) are connected in parallel on described voltage stabilizing chip (IC2) and earth terminal, between the output that described electric capacity (C10) and electric capacity (C11) are connected in parallel on described voltage stabilizing chip (IC2) and earth terminal.
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| CN201310627614.8A CN104682542B (en) | 2013-11-28 | 2013-11-28 | Emergency lighting lamp control circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107040038A (en) * | 2017-06-02 | 2017-08-11 | 浙江德力西电器有限公司 | A kind of dual power supply conversion control circuit based on 555 timers |
| CN110138079A (en) * | 2019-06-28 | 2019-08-16 | 郑州工程技术学院 | Power supply safety protection system |
| CN111313530A (en) * | 2020-03-12 | 2020-06-19 | 厦门宏发电气有限公司 | Emergency lighting power distribution device |
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| CN201113551Y (en) * | 2007-09-20 | 2008-09-10 | 浙江中凯电器有限公司 | Duplicate supply automatic transfer switch switching control electric appliance |
| CN102264168A (en) * | 2010-05-25 | 2011-11-30 | 合肥三川自控工程有限责任公司 | Induction lighting lamp and induction lighting system |
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| JP2007252198A (en) * | 2007-05-08 | 2007-09-27 | Matsushita Electric Works Ltd | Lighting apparatus and lighting system |
| CN201113551Y (en) * | 2007-09-20 | 2008-09-10 | 浙江中凯电器有限公司 | Duplicate supply automatic transfer switch switching control electric appliance |
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| CN107040038A (en) * | 2017-06-02 | 2017-08-11 | 浙江德力西电器有限公司 | A kind of dual power supply conversion control circuit based on 555 timers |
| CN107040038B (en) * | 2017-06-02 | 2023-07-25 | 浙江德力西电器有限公司 | Dual-power conversion control circuit based on 555 timer |
| CN110138079A (en) * | 2019-06-28 | 2019-08-16 | 郑州工程技术学院 | Power supply safety protection system |
| CN110138079B (en) * | 2019-06-28 | 2020-02-18 | 郑州工程技术学院 | Power supply safety protection system |
| CN111313530A (en) * | 2020-03-12 | 2020-06-19 | 厦门宏发电气有限公司 | Emergency lighting power distribution device |
| CN111313530B (en) * | 2020-03-12 | 2022-04-19 | 厦门宏发电气有限公司 | Emergency lighting power distribution device |
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