CN102781149A - Emergency lighting circuit and emergency electronic ballast - Google Patents
Emergency lighting circuit and emergency electronic ballast Download PDFInfo
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- CN102781149A CN102781149A CN2011101182075A CN201110118207A CN102781149A CN 102781149 A CN102781149 A CN 102781149A CN 2011101182075 A CN2011101182075 A CN 2011101182075A CN 201110118207 A CN201110118207 A CN 201110118207A CN 102781149 A CN102781149 A CN 102781149A
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Abstract
The invention is applicable to the lighting field, and provides an emergency lighting circuit. The emergency lighting circuit comprises an input connecting terminal, a main power line, a zero line, a rectification and filtering unit and a charging unit. The circuit further comprises a power detection unit, an emergency detection line, an emergency detection unit, a processing unit and a switch control unit, wherein the power detection unit is used for detecting electric current on the main power line and outputting a power detection signal; the emergency detection line is used for detecting electric current of an external general power and producing emergency electric current; the emergency detection unit is used for detecting the emergency electric current and outputting an emergency detection signal; the processing unit is used for outputting an emergency start signal when the power detection signal and the emergency detection signal are both in a high level; and the switch control unit is used for starting a battery for power supply when receiving the emergency start signal. The emergency detection line and the emergency detection unit are used to detect whether the general power is cut off, so that the emergency function is started when the general power is cut off; and when the general power supplies power and the main power is cut off, the emergency function is not started, and the power supply is cut off, thereby precisely controlling emergency lighting.
Description
Technical field
The invention belongs to lighting field, relate in particular to a kind of emergency lighting circuit and emergency electronic ballast.
Background technology
When disasters such as breaking out of fire, blast and earthquake, normal power source often breaks down and causes that illumination all extinguishes, and at this moment, can use emergency lighting to be able to proceed to ensure necessary work.
At present, the main power source of emergency lighting circuit connects a switch usually, after primary power source de-energizes; The emergency lighting circuit starts emergency power supply immediately, and when the switch on the main power source broke off, the emergency lighting circuit also can start emergency function; Cause the emergency lighting product to extinguish; Can not accurately control emergency lighting, in productive life, greatly waste electric energy, not meet modern environmental protection requirement.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of emergency lighting circuit, is intended to solve existing lighting circuit and can't accurately controls emergency lighting, the waste problem of resource.
The embodiment of the invention is achieved in that a kind of emergency lighting circuit, comprises input wires terminal, main power line, zero line, rectification filtering unit and charhing unit; Said input wires terminal is connected with outside general supply; The current input terminal of said main power line is connected with said input wires terminal, and the current output terminal of said main power line is connected with said rectification filtering unit, and an end of said zero line is connected with said input wires terminal; It is characterized in that said emergency lighting circuit also comprises:
The power supply detecting unit; The positive input terminal of said power supply detecting unit is connected with the current output terminal of said main power line; The negative input end of said power supply detecting unit is connected with the other end of said zero line, is used to detect the electric current on the said main power line, the out-put supply detection signal;
Emergent detection line, said emergent detection line is connected with said input wires terminal, is used to detect the electric current of said outside general supply, produces emergency electric current;
Emergent detecting unit; The positive input terminal of said emergent detecting unit is connected with the current output terminal of said emergent detection line; The negative input end of said emergent detecting unit is connected with the other end of said zero line, is used to detect said emergency electric current, the emergent detection signal of output;
Processing unit; The power supply test side of said processing unit is connected with the output of said power supply detecting unit; The emergent test side of said processing unit is connected with the output of said emergent detecting unit, and the power end of said processing unit is connected with the input of said charhing unit, and the output of said charhing unit is connected with anode; Be used for when said power detection signal and said emergent detection signal are high level output emergency starting signal; And
Switch control unit; The control end of said switch control unit is connected with the output of said processing unit; The input of said switch control unit is connected with anode; The output of said switch control unit is connected with load, when being used to receive said emergency starting signal, starting battery and supplies power.
Another purpose of the embodiment of the invention is to provide a kind of emergency electronic ballast that adopts above-mentioned emergency lighting circuit.
In embodiments of the present invention, whether cut off the power supply, when general supply is cut off the power supply, start emergency function through emergent detection line and the outside general supply of emergent detection; When general supply power supply, and main power source does not start emergency function when cutting off the power supply because of external factor, stops electric; Realize that this emergency lighting circuit structure is simple by the power supply of demand illumination product, cost is low; Can control emergency lighting more accurately, practice thrift social resources, compliance with environmental protection requirements.
Description of drawings
The structure chart of the emergency lighting circuit that Fig. 1 provides for one embodiment of the invention;
The exemplary circuit structure chart of the emergency lighting circuit that Fig. 2 provides for one embodiment of the invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Whether the embodiment of the invention cuts off the power supply through emergent detection line and the outside general supply of emergent detection, when general supply cut off the power supply, starts emergency function, and when general supply is supplied power, and main power source does not start emergency function when cutting off the power supply because of external factor, stops electric.
Fig. 1 illustrates the structure of the emergency lighting circuit that the embodiment of the invention provides, and for the ease of explanation, only shows the part relevant with the present invention.
This emergency lighting circuit can be applied in the various emergency electronic ballasts.
The emergency lighting circuit that provides as one embodiment of the invention; Comprise input wires terminal CON1, main power line L1, zero line N, rectification filtering unit 2 and charhing unit 7; Input wires terminal CON1 is connected with outside general supply, and the current input terminal of main power line L1 is connected with input wires terminal CON1, and the current output terminal of main power line L1 is connected with rectification filtering unit 2; The end of zero line N is connected with input wires terminal CON1, and this emergency lighting circuit also comprises:
Power supply detecting unit 3, the positive input terminal of this power supply detecting unit 3 is connected with the current output terminal of main power line L1, and the negative input end of this power supply detecting unit 3 is connected with the other end of zero line N, is used to detect the electric current on the main power line L1, the out-put supply detection signal;
Emergent detection line L2, this emergent detection line L2 is connected with input wires terminal CON1, is used to detect the electric current of said outside general supply, produces emergency electric current;
Switch control unit 6; The control end of this switch control unit 6 is connected with the output of processing unit 5; The input of this switch control unit 6 is connected with anode+BATT; The output of this switch control unit 6 is connected with load, when being used to receive the emergency starting signal, starting battery and supplies power.
Below in conjunction with specific embodiment realization of the present invention is elaborated.
Fig. 2 illustrates the exemplary circuit structure of the emergency lighting circuit that the embodiment of the invention provides, and for the ease of explanation, only shows the part relevant with the present invention.
In embodiments of the present invention, rectification filtering unit 2 comprises: capacitor C 3, capacitor C 4, capacitor C 5, capacitor C 6, capacitor C 7, transformer T1 and rectifier bridge BD1;
It is parallelly connected after capacitor C 3 is connected with capacitor C 4 with capacitor C 5; The link ground connection of capacitor C 3 and capacitor C 4; The other end of capacitor C 3 is that the input of rectification filtering unit 2 is connected with the end of the same name of the elementary winding N1 of transformer T1; The other end of capacitor C 4 is connected with the end of the same name of the secondary winding N2 of transformer T1; The different name end of the elementary winding N1 of transformer T1 is connected with the different name end of the secondary winding N2 of transformer T1 through capacitor C 6, and the different name end of the elementary winding N1 of transformer T1 is connected with first end of rectifier bridge BD1 simultaneously, and the different name end of the secondary winding N2 of transformer T1 is connected with the 3rd end of rectifier bridge BD1; The 4th end ground connection of rectifier bridge BD1, second end of rectifier bridge BD1 are that the output of rectification filtering unit 2 is connected with load also simultaneously through capacitor C 7 ground connection.
Power supply detecting unit 3 comprises: resistance R 1, resistance R 2, capacitor C 1, diode D1 and optocoupler U1;
One end of resistance R 1 is the positive input terminal of power supply detecting unit 3; The other end of resistance R 1 is connected with the negative electrode of diode D1; The negative electrode of diode D1 is connected with the first input end of optocoupler U1 simultaneously; The anode of diode D1 is that the negative input end of power supply detecting unit 3 is connected with second input of optocoupler U1, and the 3rd output of optocoupler U1 is connected with an end of resistance R 2, and the other end of resistance R 2 is that the output of power supply detecting unit 3 is connected with an end of capacitor C 1; The other end ground connection of capacitor C 1, the 4th output of optocoupler U1 and the negative pole of battery-BATT is ground connection simultaneously.
Emergent detecting unit 4 comprises: resistance R 3, resistance R 4, capacitor C 2, diode D2 and optocoupler U2;
One end of resistance R 3 is the positive input terminal of emergent detecting unit 4; The other end of resistance R 3 is connected with the negative electrode of diode D2; The negative electrode of diode D2 is connected with the first input end of optocoupler U2 simultaneously; The anode of diode D2 is connected with second input of optocoupler U2 for the negative input end of emergent detecting unit 4, and the 3rd output of optocoupler U2 is connected with an end of resistance R 4, and the other end of resistance R 4 is connected with an end of capacitor C 2 for the output of emergent detecting unit 4; The other end ground connection of capacitor C 2, the 4th output head grounding of optocoupler U1.
Switch control unit 6 comprises: resistance R 5, resistance R 6, resistance R 7, resistance R 8, resistance R 9, capacitor C 8, switching tube Q1 and switching tube Q2;
One end of resistance R 5 is the control end of switch control unit 6, and the other end of resistance R 5 is connected with an end of resistance R 6, and the other end of resistance R 6 is through resistance R 7 ground connection; Capacitor C 8 is parallelly connected with resistance R 7; Capacitor C 8 is connected with the control end of switching tube Q1 with the link of resistance R 6, the output head grounding of switching tube Q1, and the input of switching tube Q1 is connected with an end of resistance R 8; The other end of resistance R 8 is connected with an end of resistance R 9; The other end of resistance R 9 is that the input of switch control unit 6 is connected with the input of switching tube Q2, and resistance R 8 is connected with the control end of switching tube Q2 with the link of resistance R 9, and the output of switching tube Q2 is the output of switch control unit 6.
As one embodiment of the invention, switching tube Q1 is a NPN type triode, and switching tube Q2 is the positive-negative-positive triode.
As one embodiment of the invention, processing unit 5 can be made up of discrete device.
As one embodiment of the present invention, processing unit 5 can also adopt chip microcontroller, like CPU, to reach higher processing speed and easy applied environment.
In embodiments of the present invention, input wires terminal CON1 connects main power line L1, emergent detection line L2 and zero line N respectively, when external main power source is supplied power; On the main power line L1 electric current is arranged, the last alternating current of L1-N is input among the optocoupler U1 after resistance R 1 dividing potential drop current limliting, diode D1 rectification; The photophore of optocoupler U1 is luminous, the light-receiving device conducting ground connection of induction optocoupler U1, and the 3rd output of optocoupler U1 is a low level; Out-put supply detection signal after resistance R 2 current limlitings, capacitor C 1 filtering, this power detection signal is a low level, the output of processing unit 5 is a low level; Do not export the emergency starting signal, switching tube Q1, not conducting of switching tube Q2, at this moment; Battery does not promptly start the emergency cell power supply not to electric, carries out Y filtering through main power line L1 through capacitor C 3, capacitor C 4 by external main power source; Carry out current conversion and carry out X filtering through capacitor C 5, transformer T1 and capacitor C 6; Again through rectifier bridge BD1 rectification, capacitor C 7 is carried out filtering, is electric in output Vcc1, load is in non-emergent conducting luminance.
When external primary power source de-energizes, there is not electric current on the main power line L1, at this moment, do not get into emergency rating by emergent detection line L2 judgement; When emergent detection line L2 detects not outage of general supply, when promptly receiving non-emergency signal, on the emergent detection line L2 electric current is arranged, the last alternating current of L2-N is after resistance R 3 dividing potential drop current limlitings, diode D2 rectification; Be input among the optocoupler U2, the photophore of optocoupler U2 is luminous, the light-receiving device conducting ground connection of induction optocoupler U2, and the 3rd output of optocoupler U2 is a low level; Through the emergent detection signal of exporting after resistance R 4 current limlitings, capacitor C 2 filtering, this emergent detection signal is a low level, and the output of processing unit 5 is a low level; Do not export the emergency starting signal, switching tube Q1, not conducting of switching tube Q2, at this moment; Battery does not promptly start the emergency cell power supply not to electric, and load is in non-emergency-off state.
When external primary power source de-energizes, and emergent detection line L2 detects general supply outage, when promptly emergent detection line L2 receives emergency signal; All there is not electric current on main power line L1 and the emergent detection line L2, optocoupler U1 and all not conductings of optocoupler U2, power detection signal and emergent detection signal are high level; The output output high level of processing unit 5; Switching tube Q1 conducting, the current collection of switching tube Q1 is high level very, makes also conducting of switching tube Q2; Battery is that load provide emergent voltage with voltage transmission to the output Vcc2 of switch control unit 6 through switching tube Q2, and load is in emergent conducting luminance.
In embodiments of the present invention; When external main power source is supplied power; Charged by 7 pairs of batteries of the power end of processing unit 5 control charhing unit, to be electric when the emergency rating, the power supply input of this charhing unit 7 can be provided by rectification filtering unit 2; Its concrete operation principle is a prior art, repeats no more here.
In embodiments of the present invention, whether cut off the power supply, when general supply is cut off the power supply, start emergency function through emergent detection line and the outside general supply of emergent detection; When general supply power supply, and main power source does not start emergency function when cutting off the power supply because of external factor, stops electric; Realize that this emergency lighting circuit structure is simple by the power supply of demand illumination product, cost is low; Can control emergency lighting more accurately, practice thrift social resources, compliance with environmental protection requirements.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. emergency lighting circuit; Comprise input wires terminal, main power line, zero line, rectification filtering unit and charhing unit, said input wires terminal is connected with outside general supply, and the current input terminal of said main power line is connected with said input wires terminal; The current output terminal of said main power line is connected with said rectification filtering unit; One end of said zero line is connected with said input wires terminal, it is characterized in that, said emergency lighting circuit also comprises:
The power supply detecting unit; The positive input terminal of said power supply detecting unit is connected with the current output terminal of said main power line; The negative input end of said power supply detecting unit is connected with the other end of said zero line, is used to detect the electric current on the said main power line, the out-put supply detection signal;
Emergent detection line, said emergent detection line is connected with said input wires terminal, is used to detect the electric current of said outside general supply, produces emergency electric current;
Emergent detecting unit; The positive input terminal of said emergent detecting unit is connected with the current output terminal of said emergent detection line; The negative input end of said emergent detecting unit is connected with the other end of said zero line, is used to detect said emergency electric current, the emergent detection signal of output;
Processing unit; The power supply test side of said processing unit is connected with the output of said power supply detecting unit; The emergent test side of said processing unit is connected with the output of said emergent detecting unit, and the power end of said processing unit is connected with the input of said charhing unit, and the output of said charhing unit is connected with anode; Be used for when said power detection signal and said emergent detection signal are high level output emergency starting signal; And
Switch control unit; The control end of said switch control unit is connected with the output of said processing unit; The input of said switch control unit is connected with anode; The output of said switch control unit is connected with load, when being used to receive said emergency starting signal, starting battery and supplies power.
2. emergency lighting circuit as claimed in claim 1 is characterized in that, said power supply detecting unit comprises:
Resistance R 1, resistance R 2, capacitor C 1, diode D1 and optocoupler U1;
One end of said resistance R 1 is the positive input terminal of said power supply detecting unit; The other end of said resistance R 1 is connected with the negative electrode of said diode D1; The negative electrode of said diode D1 is connected with the first input end of said optocoupler U1 simultaneously; The anode of said diode D1 is that the negative input end of said power supply detecting unit is connected with second input of said optocoupler U1, and the 3rd output of said optocoupler U1 is connected with an end of said resistance R 2, and the other end of said resistance R 2 is that the output of said power supply detecting unit is connected with an end of said capacitor C 1; The other end ground connection of said capacitor C 1, the 4th output of said optocoupler U1 and the negative pole of battery be ground connection simultaneously.
3. emergency lighting circuit as claimed in claim 1 is characterized in that, said emergent detecting unit comprises:
Resistance R 3, resistance R 4, capacitor C 2, diode D2 and optocoupler U2;
One end of said resistance R 3 is the positive input terminal of said emergent detecting unit; The other end of said resistance R 3 is connected with the negative electrode of said diode D2; The negative electrode of said diode D2 is connected with the first input end of said optocoupler U2 simultaneously; The anode of said diode D2 is that the negative input end of said emergent detecting unit is connected with second input of said optocoupler U2, and the 3rd output of said optocoupler U2 is connected with an end of said resistance R 4, and the other end of said resistance R 4 is that the output of said emergent detecting unit is connected with an end of said capacitor C 2; The other end ground connection of said capacitor C 2, the 4th output head grounding of said optocoupler U1.
4. emergency lighting circuit as claimed in claim 1 is characterized in that, said processing unit is a single-chip microcomputer.
5. emergency lighting circuit as claimed in claim 1 is characterized in that, said switch control unit comprises:
Resistance R 5, resistance R 6, resistance R 7, resistance R 8, resistance R 9, capacitor C 8, switching tube Q1 and switching tube Q2;
One end of said resistance R 5 is the control end of said switch control unit; The other end of said resistance R 5 is connected with an end of said resistance R 6; The other end of said resistance R 6 is through said resistance R 7 ground connection, and said capacitor C 8 is parallelly connected with said resistance R 7, and said capacitor C 8 is connected with the control end of said switching tube Q1 with the link of said resistance R 6; The output head grounding of said switching tube Q1; The input of said switching tube Q1 is connected with an end of said resistance R 8, and the other end of said resistance R 8 is connected with an end of said resistance R 9, and the other end of said resistance R 9 is that the input of said switch control unit is connected with the input of said switching tube Q2; Said resistance R 8 is connected with the control end of said switching tube Q2 with the link of said resistance R 9, and the output of said switching tube Q2 is the output of said switch control unit.
6. emergency lighting circuit as claimed in claim 5 is characterized in that, said switching tube Q1 is a NPN type triode, and said switching tube Q2 is the positive-negative-positive triode.
7. an emergency electronic ballast is characterized in that, the emergency lighting circuit of said emergency electronic ballast is each described emergency lighting circuit of claim 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101182075A CN102781149A (en) | 2011-05-09 | 2011-05-09 | Emergency lighting circuit and emergency electronic ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101182075A CN102781149A (en) | 2011-05-09 | 2011-05-09 | Emergency lighting circuit and emergency electronic ballast |
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| CN102781149A true CN102781149A (en) | 2012-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101182075A Pending CN102781149A (en) | 2011-05-09 | 2011-05-09 | Emergency lighting circuit and emergency electronic ballast |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110324930A (en) * | 2018-03-29 | 2019-10-11 | 深圳市海洋王照明工程有限公司 | Emergency lighting driving circuit and lamps and lanterns |
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| CN2814876Y (en) * | 2004-06-04 | 2006-09-06 | 袁启鹏 | Controllable emergency lamp illuminating controller |
| CN1700025A (en) * | 2005-06-29 | 2005-11-23 | 哈尔滨工业大学 | Carrier wave intelligentized detection control apparatus for single power inductance ballasts and detection method thereof |
| CN101715271A (en) * | 2008-10-06 | 2010-05-26 | 奥斯兰姆有限公司 | Emergency ballast system |
| WO2010070676A2 (en) * | 2008-12-08 | 2010-06-24 | Tycka Design Private Limited | Intuitive electronic circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110324930A (en) * | 2018-03-29 | 2019-10-11 | 深圳市海洋王照明工程有限公司 | Emergency lighting driving circuit and lamps and lanterns |
| CN110324930B (en) * | 2018-03-29 | 2021-09-10 | 深圳市海洋王照明工程有限公司 | Emergency lighting drive circuit and lamp |
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Application publication date: 20121114 |