CN109217455A - A kind of emergency switching circuit of lighting circuit - Google Patents
A kind of emergency switching circuit of lighting circuit Download PDFInfo
- Publication number
- CN109217455A CN109217455A CN201810954317.7A CN201810954317A CN109217455A CN 109217455 A CN109217455 A CN 109217455A CN 201810954317 A CN201810954317 A CN 201810954317A CN 109217455 A CN109217455 A CN 109217455A
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- triode
- circuit
- emergency
- base stage
- alternating current
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- 238000004804 winding Methods 0.000 claims description 15
- 238000005868 electrolysis reaction Methods 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 7
- 238000012360 testing method Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The present invention provides a kind of emergency switching circuit of lighting circuit, which has fast response time, and at low cost, battery is lossless when circuit does not work, the characteristics such as emergency switching when alternating current power down and not power down can be achieved at the same time.This circuit includes alternating current power down voltage detecting circuit, alternating current power-down control circuit, latching circuit, enabled control circuit and cell switch circuit.The emergency starting rapidly when alternating current powers off can be achieved by the combination of above several partial circuits, in the presence of alternating current can also start by set date and close emergency self-test, battery is lossless when alternating current is without input, battery is connect on product, can make battery will not over-discharge, battery can be reserved for longer time.
Description
Technical field
The present invention relates to a kind of emergency switching circuits of lighting circuit.
Background technique
In LED emergence lighting lamp and other fire emergency fields, such as corridor stair emergency lighting, warehouse is answered
Anxious illumination, switching emergency power supply carries out emergency lighting and generally uses chip microcontroller after alternating current power-off, and single-chip microcontroller passes through acquisition
Signal does a series of controls, and uses single-chip microcontroller not only price is more expensive, and needs the specific software personnel to cooperate.And single-chip microcontroller is not
Only the development cycle is long, and needs that the long period is spent to remove test bug, and more manpower and time is caused to waste for project.
Summary of the invention
It is at low cost the main technical problem to be solved by the present invention is to provide a kind of emergency switching circuit of lighting circuit,
When emergency circuit does not work, the power supply of emergency circuit is lossless.
In order to solve the above technical problems, the present invention provides a kind of emergency switching circuits of lighting circuit, comprising: three
Pole pipe Q3, triode Q4, triode Q6 and PMOS tube Q7；
The base stage of the triode Q3 is connected to isolating transformer by the cathode of resistance R28 and diode D8 and exports winding
Same Name of Ends VX；The isolating transformer input winding is connected to alternating current；The collector of the triode Q3 is connected to described three
The base stage of pole pipe Q4；The emitter of the triode Q4 is connected to the base stage of the triode Q6；The current collection of the triode Q6
Pole is connected to the grid of the PMOS tube Q7, and the source electrode of the PMOS tube Q7 is connected to the battery output of emergency circuit, described
The drain electrode of PMOS tube Q7 is connected to the Input voltage terminal of emergency circuit；
When the alternating current normally powers on, the base stage of the triode Q3 is low level cut-off, the triode Q4, described
Triode Q6 ends therewith, and the PMOS tube Q7 is also switched off, the battery output of the emergency circuit and the emergency circuit
Input voltage terminal disconnects, and emergency circuit does not work；
When the alternating current power down, the base stage of the triode Q3 is high level conducting, the triode Q4, three pole
Pipe Q6 is connected therewith, and the PMOS tube Q7 is also switched on, the input of the battery output of the emergency circuit and the emergency circuit
Voltage end connection, emergency circuit work.
In a preferred embodiment: the Same Name of Ends VX of the isolating transformer output winding also passes through the sun of a diode D7
Pole is connected to the base stage of the triode Q2, and the collector of the triode Q2 is connected to the base stage of the triode Q3, described
The emitter of triode Q2 is grounded；
The cathode of the diode D8 directly passes through electrolysis EC5 with the emitter of the triode Q2 and connect；
When the alternating current normally powers on, the base stage of the triode Q2 is high level conducting, and the electrolysis EC5 work is being filled
Electricity condition；When the alternating current power down, the voltage of the Same Name of Ends VX input of the isolating transformer output winding is 0；Described three
The base stage of pole pipe Q2 is low level cut-off, and the electrolysis EC5 work lifts the base voltage of the triode Q3 in discharge condition
Up to high level.
In a preferred embodiment: the base stage of the triode Q3 is connected with emitter by resistance R31, the triode
The base stage of Q4 is connected with collector by resistance R29；The resistance R31 and resistance R29 respectively constitute the triode Q3,
The latching circuit of the triode Q4, when the electrolysis EC5 electric discharge after, the latching circuit make the triode Q3,
The triode Q4 is kept on.
In a preferred embodiment:
It further include an emergency self-checking circuit comprising an extraneous trigger, input terminal are connected to the diode D7's
Cathode；
It further include that the base stage of triode a Q5, the triode Q5 is connected to the output of extraneous trigger by resistance R33
End；The output voltage terminal VOUT of the current collection extremely emergency circuit of the triode Q5, the emitter of the triode Q5 pass through electricity
Resistance R39 is connected to the base stage of the triode Q6；
Alternating current generates one high electricity after the Same Name of Ends VX and the diode D7 of isolating transformer output winding
Ordinary mail number；When high level signal duration reaches preset time, the output end of external world's trigger issues high level
Signal controls the triode Q5 conducting, and the base voltage of the triode Q6 is drawn high and is turned it on, so that described
PMOS tube Q7 is also switched on, and the battery output of the emergency circuit is connected to the Input voltage terminal of the emergency circuit, answers urgent telegram
Road work；After the emergency circuit working time reaching setting time, the output end of external world's trigger issues low level signal
The triode Q5 cut-off is controlled, emergency circuit does not work.
Compared to the prior art, technical solution of the present invention have it is following the utility model has the advantages that
Invention provides a kind of emergency switching circuit of lighting circuit, applies in emergency lighting circuit, can detect automatically
And switching emergency circuit, save and need a large amount of manpowers and time resource that spend with microcomputer development and test, and this circuit at
This is lower, therefore the standard emergency control circuit of can be used as is promoted.It is in particular in:
1. can be switched to emergency rating after alternating current power down rapidly, switching time actual measurement is less than 100mS；
2. alternating current power-on time detection can be carried out, thus also can start by set date and closing emergency self-test in the presence of alternating current；
3. battery is lossless when battery connects on product when alternating current is without input, battery can be made to protect in transport storing process
The long period is deposited, battery over-discharge will not be made.
Detailed description of the invention
Fig. 1 is the circuit diagram of the preferred embodiment of the present invention.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and embodiments；
With reference to Fig. 1, a kind of emergency switching circuit of lighting circuit, comprising: triode Q3, triode Q4, triode Q6 and
PMOS tube Q7；
The base stage of the triode Q3 is connected to isolating transformer by the cathode of resistance R28 and diode D8 and exports winding
Same Name of Ends VX；The isolating transformer input winding is connected to alternating current；The collector of the triode Q3 is connected to described three
The base stage of pole pipe Q4；The emitter of the triode Q4 is connected to the base stage of the triode Q6；The current collection of the triode Q6
Pole is connected to the grid of the PMOS tube Q7, and the source electrode of the PMOS tube Q7 is connected to the battery output of emergency circuit, described
The drain electrode of PMOS tube is connected to the Input voltage terminal of emergency circuit；
When the alternating current normally powers on, the base stage of the triode Q3 is low level cut-off, the triode Q4, described
Triode Q6 ends therewith, and the PMOS tube Q7 is also switched off, the battery output of the emergency circuit and the emergency circuit
Input voltage terminal disconnects, and emergency circuit does not work；
When the alternating current power down, the base stage of the triode Q3 is high level conducting, the triode Q4, three pole
Pipe Q6 is connected therewith, and the PMOS tube Q7 is also switched on, the input of the battery output of the emergency circuit and the emergency circuit
Voltage end connection, emergency circuit work.
Therefore above-mentioned circuit can automatically switch to emergency circuit power supply in alternating current power down.And it is not necessarily in circuit
Single-chip microcontroller is set, and switch speed is fast, and circuit cost is low.Without expending a large amount of human resources and time resource when designing circuit.
Also, when alternating current is without input, the battery output of emergency circuit and the Input voltage terminal of emergency circuit are disconnected, and battery is lossless
Consumption can make battery save the long period, will not make battery over-discharge in transport storing process.
Specifically, in order to realize automatic switchover when alternating current power down, the isolating transformer exports the Same Name of Ends of winding
The anode that VX also passes through a diode D7 is connected to the base stage of the triode Q2, and the collector of the triode Q2 is connected to institute
State the base stage of triode Q3, the emitter ground connection of the triode Q2；
The cathode of the diode D8 directly passes through electrolysis EC5 with the emitter of the triode Q2 and connect；
When the alternating current normally powers on, the base stage of the triode Q2 is high level conducting, and the electrolysis EC5 work is being filled
Electricity condition；When the alternating current power down, the voltage of the Same Name of Ends VX input of the isolating transformer output winding is 0；Described three
The base stage of pole pipe Q2 is low level cut-off, and the electrolysis EC5 work lifts the base voltage of the triode Q3 in discharge condition
Up to high level.
In order to which after electrolysis EC5 electric discharge, emergency circuit is also held in use state, the triode Q3's
Base stage is connected with emitter by resistance R31, and the base stage of triode Q4 is connected with collector by resistance R29；The resistance R31
The latching circuit that the triode Q3, the triode Q4 are respectively constituted with the R29, after electrolysis EC5 electric discharge,
The latching circuit is kept on the triode Q3, the triode Q4.
In addition, usually need periodically to carry out test self-test to emergency circuit to guarantee that emergency circuit can work normally,
It therefore, further include an emergency self-checking circuit in the present embodiment comprising an extraneous trigger, input terminal are connected to two pole
The cathode of pipe D7；
It further include a triode Q5, base stage is connected to the output end of extraneous trigger by resistance R33；Its current collection is extremely
The output voltage terminal VOUT of emergency circuit, emitter are connected to the base stage of triode Q6 by resistance R39；
Alternating current generates one high electricity after the Same Name of Ends VX and the diode D7 of isolating transformer output winding
Ordinary mail number；When high level signal duration reaches preset time, the output end of external world's trigger issues high level
Signal controls the triode Q5 conducting, and the base voltage of the triode Q6 is drawn high and is turned it on, so that described
PMOS tube Q7 is also switched on, and the battery output of the emergency circuit is connected to the Input voltage terminal of the emergency circuit, answers urgent telegram
Road work；After the emergency circuit working time reaching setting time, the output end of external world's trigger issues low level signal
The triode Q5 cut-off is controlled, emergency circuit does not work.
The foregoing is only a preferred embodiment of the present invention, but the design concept of the present invention is not limited to this,
Anyone skilled in the art in the technical scope disclosed by the present invention, using this design carries out the present invention non-
Substantive change belongs to the behavior for invading the scope of the present invention.
Claims (4)
1. a kind of emergency switching circuit of lighting circuit, characterized by comprising: triode Q3, triode Q4, triode Q6 and
PMOS tube Q7；
The base stage of the triode Q3 is connected to isolating transformer by the cathode of resistance R28 and diode D8 and exports the same of winding
Name end VX；The isolating transformer input winding is connected to alternating current；The collector of the triode Q3 is connected to the triode
The base stage of Q4；The emitter of the triode Q4 is connected to the base stage of the triode Q6；The collector of the triode Q6 connects
It is connected to the grid of the PMOS tube Q7, the source electrode of the PMOS tube Q7 is connected to the battery output of emergency circuit, the PMOS
The drain electrode of pipe Q7 is connected to the Input voltage terminal of emergency circuit；
When the alternating current normally powers on, the base stage of the triode Q3 is low level cut-off, the triode Q4, three pole
Pipe Q6 ends therewith, and the PMOS tube Q7 is also switched off, the input of the battery output of the emergency circuit and the emergency circuit
Voltage end disconnects, and emergency circuit does not work；
When the alternating current power down, the base stage of the triode Q3 is high level conducting, the triode Q4, the triode Q6
It is connected therewith, the PMOS tube Q7 is also switched on, the input voltage of the battery output of the emergency circuit and the emergency circuit
End connection, emergency circuit work.
2. a kind of emergency switching circuit of lighting circuit according to claim 1, it is characterised in that: the isolating transformer
The anode that the Same Name of Ends VX of output winding also passes through a diode D7 is connected to the base stage of the triode Q2, the triode Q2
Collector be connected to the base stage of the triode Q3, the emitter ground connection of the triode Q2；
The cathode of the diode D8 directly passes through electrolysis EC5 with the emitter of the triode Q2 and connect；
When the alternating current normally powers on, the base stage of the triode Q2 is high level conducting, and the electrolysis EC5 work is in charging shape
State；When the alternating current power down, the voltage of the Same Name of Ends VX input of the isolating transformer output winding is 0；The triode
The base stage of Q2 is low level cut-off, and the base voltage of the triode Q3 is raised to by the electrolysis EC5 work in discharge condition
High level.
3. a kind of emergency switching circuit of lighting circuit according to claim 2, it is characterised in that: the triode Q3's
Base stage is connected with emitter by resistance R31, and the base stage of the triode Q4 is connected with collector by resistance R29；The electricity
The resistance R31 and resistance R29 respectively constitutes the latching circuit of the triode Q3, the triode Q4, when the electrolysis EC5 is put
After electricity, the latching circuit is kept on the triode Q3, the triode Q4.
4. a kind of emergency switching circuit of lighting circuit according to claim 3, it is characterised in that: further include an emergency from
Examine circuit comprising an extraneous trigger, input terminal are connected to the cathode of the diode D7；
It further include that the base stage of triode a Q5, the triode Q5 is connected to the output end of extraneous trigger by resistance R33；Institute
The emitter for stating the output voltage terminal VOUT, the triode Q5 of the current collection extremely emergency circuit of triode Q5 passes through resistance R39
It is connected to the base stage of the triode Q6；
Alternating current generates a high level letter after the Same Name of Ends VX and the diode D7 of isolating transformer output winding
Number；When high level signal duration reaches preset time, the output end of external world's trigger issues high level signal
The triode Q5 conducting is controlled, the base voltage of the triode Q6 is drawn high and is turned it on, so that the PMOS tube
Q7 is also switched on, and the battery output of the emergency circuit is connected to the Input voltage terminal of the emergency circuit, emergency circuit work；
After the emergency circuit working time reaching setting time, the output end of external world's trigger is issued described in low level signal control
Triode Q5 cut-off, emergency circuit do not work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810954317.7A CN109217455A (en) | 2018-08-21 | 2018-08-21 | A kind of emergency switching circuit of lighting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810954317.7A CN109217455A (en) | 2018-08-21 | 2018-08-21 | A kind of emergency switching circuit of lighting circuit |
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| Publication Number | Publication Date |
|---|---|
| CN109217455A true CN109217455A (en) | 2019-01-15 |
Family
ID=64988943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810954317.7A Pending CN109217455A (en) | 2018-08-21 | 2018-08-21 | A kind of emergency switching circuit of lighting circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110071575A (en) * | 2019-06-04 | 2019-07-30 | 深圳莱福德科技股份有限公司 | Emergency power supply charge-discharge control circuit and emergency-lighting set |
| CN110248455A (en) * | 2019-07-05 | 2019-09-17 | 深圳迈睿智能科技有限公司 | Emergency light and its control circuit and control method and storage method |
| CN113595232A (en) * | 2021-08-02 | 2021-11-02 | 巨翊科技（上海）有限公司 | Dual management system for power supply software and hardware of mobile medical equipment |
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| CN208820527U (en) * | 2018-08-21 | 2019-05-03 | 厦门阳光恩耐照明有限公司 | The emergency switching circuit of lighting circuit |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110071575A (en) * | 2019-06-04 | 2019-07-30 | 深圳莱福德科技股份有限公司 | Emergency power supply charge-discharge control circuit and emergency-lighting set |
| CN110071575B (en) * | 2019-06-04 | 2024-05-03 | 深圳莱福德科技股份有限公司 | Emergency power supply charge-discharge control circuit and emergency lighting equipment |
| CN110248455A (en) * | 2019-07-05 | 2019-09-17 | 深圳迈睿智能科技有限公司 | Emergency light and its control circuit and control method and storage method |
| WO2021003854A1 (en) * | 2019-07-05 | 2021-01-14 | 深圳迈睿智能科技有限公司 | Emergency lamp, control circuit and control method therefor, and storage method |
| CN110248455B (en) * | 2019-07-05 | 2024-08-09 | 深圳迈睿智能科技有限公司 | Emergency lamp, control circuit and control method thereof and storage method |
| CN113595232A (en) * | 2021-08-02 | 2021-11-02 | 巨翊科技（上海）有限公司 | Dual management system for power supply software and hardware of mobile medical equipment |
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