CN209299556U - A kind of LED emergency circuit of compatible silicon controlled light modulator - Google Patents
A kind of LED emergency circuit of compatible silicon controlled light modulator Download PDFInfo
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Abstract
The utility model discloses a kind of LED emergency circuits of compatible silicon controlled light modulator, it includes circuit switch, controllable silicon dimmer, voltage coupling circuit, current rectifying and wave filtering circuit, state detection circuit, the dimming driving circuit being connect respectively with normal illumination LED load and battery charger, micro-control unit, high frequency voltage generation circuit, for the DC-DC emergency lighting circuit of emergency lighting LED load power supply, battery charger, the battery being connect with micro-control unit and DC-DC emergency lighting circuit, after L output line connects circuit switch and controllable silicon dimmer, it is connect respectively with current rectifying and wave filtering circuit after N output line connection voltage coupling circuit, current rectifying and wave filtering circuit is connect with state detection circuit and dimming driving circuit respectively, micro-control unit respectively with state detection circuit, high frequency voltage generation circuit, The connection of DC-DC emergency lighting circuit, high frequency voltage generation circuit are connect with voltage coupling circuit；Advantage is that it can detect switch OFF or controllable silicon dimmer shutdown well.
Description
Technical field
The utility model relates to a kind of emergency circuits, answer urgent telegram more particularly, to a kind of LED of compatible silicon controlled light modulator
Road.
Background technique
LED illumination emergency light be it is a kind of used in normal power supply as conventional lighting lamp, and in accident power-off Shi Kezuo
The dual-purpose LED light used for emergency light.LED illumination emergency light generallys use battery after accident power-off and is powered, so-called
Accident power-off refers to power grid accident power-off, and battery is connected with the emergency lighting circuit of LED illumination emergency light at this time, to light
LED load works on.
To identify whether one inspection of connection usually between power grid input terminal and emergency lighting circuit for power grid accident power-off
Slowdown monitoring circuit is detected to emergency lighting circuit and is controlled the starting and shutdown of emergency lighting circuit, as shown in Figure 1, the detection is electric
Road includes diode D, capacitor C, zener diode ZD, metal-oxide-semiconductor Q and six resistance R1、R2、R3、R4、 R5、R6, when power grid has electricity
And when closing the switch, input one low-frequency d electricity to the both ends capacitor C make capacitor C charging simultaneously after alternating current is rectified by diode D
Metal-oxide-semiconductor Q is connected in output high level, and emergency lighting circuit does not work；When power grid has electricity or power-off and switch disconnects, battery
It charges directly to capacitor C and exporting high level is connected metal-oxide-semiconductor Q, emergency lighting circuit does not work；When grid cut-off and switch closes
When conjunction, the voltage of battery passes through R1Resistance, R2Resistance, R3Resistance, R4Electric resistance partial pressure, which obtains low level on capacitor C, makes MOS
Pipe Q cut-off, so that emergency lighting circuit be made to work.Since emergency circuit shown in FIG. 1 does not have light modulator, passed for having
In the case where the controllable silicon dimmer of system, which is difficult to detect switch OFF or controllable silicon dimmer shutdown, no
It is suitble to the circuit with controllable silicon dimmer.
Summary of the invention
The technical problem to be solved by the utility model is to provide a kind of LED emergency circuit of compatible silicon controlled light modulator,
It can detect switch OFF or controllable silicon dimmer shutdown well, and in switch OFF, emergency lighting LED is loaded
It does not work, and in controllable silicon dimmer shutdown, whether detection power grid is powered off, grid cut-off emergency lighting work, power grid is not powered off and is answered
Anxious illumination does not work.
Technical solution adopted by the utility model to solve the above technical problems is as follows: a kind of compatible silicon controlled light modulator
LED emergency circuit, including current rectifying and wave filtering circuit, dimming driving circuit, DC-DC emergency lighting circuit, battery charger and electricity
Pond, the output end of the current rectifying and wave filtering circuit are connect with the input terminal of the dimming driving circuit, the light modulation driving
The output end of circuit is connect with normal illumination LED load all the way, the another way of the output end of the dimming driving circuit with
The input terminal of the battery charger connects, and the output end of the battery charger is connect with the battery, institute
The battery stated is connect with the DC-DC emergency lighting circuit, and the output end and emergency of the DC-DC emergency lighting circuit shine
Bright LED load connection, it is characterised in that: the LED emergency circuit further includes circuit switch, controllable silicon dimmer, voltage coupling electricity
Road, state detection circuit, micro-control unit, alternating component high frequency voltage generation circuit, the micro-control unit is according to institute
Whether the voltage value that the state detection circuit stated detects, which is 0 volt, decides whether to control the high frequency voltage generation circuit work
Make, high-frequency alternating current is generated when the high frequency voltage generation circuit works and is sent to the voltage coupling circuit, it is described
Voltage coupling circuit couples high frequency alternating current after institute fed back to by the circuit switch and the controllable silicon dimmer
The size of the state detection circuit stated, the voltage value that the micro-control unit is detected according to the state detection circuit is determined
It is fixed whether to control the DC-DC emergency lighting circuit work.
The L output line for city's low frequency ac that power grid provides is sequentially connected the circuit switch and the thyristor regulating
It is connect after light device with the input terminal of the current rectifying and wave filtering circuit, the N output line for city's low frequency ac that power grid provides connects institute
It is connect after the voltage coupling circuit stated with the input terminal of the current rectifying and wave filtering circuit, the output end of the current rectifying and wave filtering circuit
Also it is connect with the state detection circuit, the output end of the state detection circuit is connect with the micro-control unit,
The micro-control unit is connect with the control terminal of the high frequency voltage generation circuit, the high frequency voltage generation circuit
Output end is connect with the voltage coupling circuit, the control of the micro-control unit and the DC-DC emergency lighting circuit
End connection processed, the battery are also connect with the micro-control unit.
The L output line for city's low frequency ac that power grid provides is sequentially connected the voltage coupling circuit, the circuit
It is connect after switch and the controllable silicon dimmer with the input terminal of the current rectifying and wave filtering circuit, city's low frequency that power grid provides is handed over
The N output line of galvanic electricity is connect with the input terminal of the current rectifying and wave filtering circuit, the output end of the current rectifying and wave filtering circuit also with
The state detection circuit connection, the output end of the state detection circuit is connect with the micro-control unit, described
Micro-control unit connect with the control terminal of the high frequency voltage generation circuit, the output of the high frequency voltage generation circuit
End is connect with the voltage coupling circuit, the control terminal of the micro-control unit and the DC-DC emergency lighting circuit
Connection, the battery are also connect with the micro-control unit.
When power grid has electricity and described circuit switch closure, the current rectifying and wave filtering circuit converts alternating current as direct current,
The state detection circuit detects that the voltage signal of the current rectifying and wave filtering circuit output is the voltage signal of non-zero, described
Micro-control unit controls described in high frequency voltage generation circuit and the DC-DC emergency lighting circuit do not work, it is described
The voltage signal that current rectifying and wave filtering circuit exports gives the dimming driving circuit and the battery charger, the light modulation
The driving circuit driving normal illumination LED load is lighted, and the battery charger is that the battery charges；
Power grid has electricity and when the circuit switch disconnects or when grid cut-off and the circuit switch disconnects or power grid
When power-off and circuit switch closure, the voltage of the state detection circuit detection current rectifying and wave filtering circuit output
Signal, when the state detection circuit detects the voltage signal of non-zero described in micro-control unit controls described in high frequency
Voltage generation circuit and the DC-DC emergency lighting circuit do not work；0 volt is detected in the state detection circuit
High frequency voltage generation circuit described in micro-control unit controls described in when voltage signal generates high-frequency alternating current, the voltage
Pass through the circuit switch and the controllable silicon dimmer, the rectifying and wave-filtering after coupling circuit couples high frequency alternating current
Circuit conversion alternating current is direct current, and the state detection circuit detects the voltage of the current rectifying and wave filtering circuit output again
Signal, when the state detection circuit still detects 0 volt of voltage signal described in micro-control unit controls described in DC-
DC emergency lighting circuit does not work, when the state detection circuit detects the voltage signal of non-zero described in microcontroller list
Member does not work or controls the DC- according to the size of the voltage value of the voltage signal control DC-DC emergency lighting circuit
DC emergency lighting circuit is that the emergency lighting LED load is powered.
The circuit switch is that regular tap or tape light switch, and the tape light is switched by indicator light, electricity
Resistance and regular tap composition, the indicator light and the resistance are connected in series, the other end of the indicator light with it is described
One end connection of regular tap and the other end of the resistance connect with the other end of the regular tap, make described
Indicator light is connected in parallel on the both ends of the regular tap after connecting with the resistance.
The circuit switch selects regular tap or tape light switch, when power grid has electric and described circuit switch to close
When conjunction, city's low frequency ac that power grid provides makes described controllable after the circuit switch and the controllable silicon dimmer
Silicon dimmer conduction, the current rectifying and wave filtering circuit convert alternating current as direct current, and the state detection circuit detects institute
The voltage signal for the current rectifying and wave filtering circuit output stated is the voltage signal of Y1 volt, and output test result gives the microcontroller list
Member, the not work of high frequency voltage generation circuit and the DC-DC emergency lighting circuit described in the micro-control unit controls
Make, the voltage signal that the current rectifying and wave filtering circuit exports at this time is to the dimming driving circuit and the battery charging electricity
Road, the dimming driving circuit driving normal illumination LED load are lighted, and the battery charger is described
Battery charging；
The circuit switch selects regular tap, and when power grid has electricity and the circuit switch disconnects, described can
Control silicon light modulator is not turned on, and the state detection circuit detects that the voltage signal of the current rectifying and wave filtering circuit output is 0
The voltage signal of volt, and output test result gives the micro-control unit, high frequency described in the micro-control unit controls
Voltage generation circuit work, the high frequency voltage generation circuit generate a high-frequency alternating current and export to the voltage coupling
Circuit is closed, for high-frequency alternating current using the circuit switch after the voltage coupling circuit coupling, described is silicon-controlled
Light modulator is not turned on, and the state detection circuit detects that the voltage signal of the current rectifying and wave filtering circuit output is still 0 volt
Voltage signal, and output test result gives the micro-control unit, and DC-DC described in the micro-control unit controls is answered
Anxious lighting circuit does not work, and the emergency lighting LED load does not work at this time；
The circuit switch selects tape light switch, described when power grid has electricity and the circuit switch disconnects
Controllable silicon dimmer conducting, the current rectifying and wave filtering circuit convert alternating current as direct current, and the state detection circuit is examined
The voltage signal for measuring the current rectifying and wave filtering circuit output is the voltage signal of Y2 volt, and output test result is to described micro-
Control unit, high frequency voltage generation circuit and the DC-DC emergency lighting circuit described in the micro-control unit controls
It does not work, the emergency lighting LED load does not work at this time；
The circuit switch selects regular tap, and when grid cut-off and when the circuit switch disconnects, described can
Control silicon light modulator is not turned on, and the state detection circuit detects that the voltage signal of the current rectifying and wave filtering circuit output is 0
The voltage signal of volt, and output test result gives the micro-control unit, high frequency described in the micro-control unit controls
Voltage generation circuit work, the high frequency voltage generation circuit generate a high-frequency alternating current and export to the voltage coupling
Circuit is closed, for high-frequency alternating current using the circuit switch after the voltage coupling circuit coupling, described is silicon-controlled
Light modulator is not turned on, and the state detection circuit detects that the voltage signal of the current rectifying and wave filtering circuit output is still 0 volt
Voltage signal, and output test result gives the micro-control unit, and DC-DC described in the micro-control unit controls is answered
Anxious lighting circuit does not work, and the emergency lighting LED load does not work at this time；
The circuit switch selects tape light switch, described when grid cut-off and when the circuit switch disconnects
Controllable silicon dimmer be not turned on, the state detection circuit detects the voltage signal of the current rectifying and wave filtering circuit output
For 0 volt of voltage signal, and output test result gives the micro-control unit, height described in the micro-control unit controls
The work of frequency voltage generation circuit, the high frequency voltage generation circuit generate a high-frequency alternating current and export to the voltage
Coupling circuit, for high-frequency alternating current using the circuit switch after the voltage coupling circuit coupling, described is controllable
Silicon dimmer conduction, the current rectifying and wave filtering circuit convert alternating current as direct current, and the state detection circuit detects institute
The voltage signal for the current rectifying and wave filtering circuit output stated is the voltage signal of Y3 volt, and output test result gives the microcontroller list
Member, DC-DC emergency lighting circuit described in the micro-control unit controls do not work, and the emergency lighting LED is negative at this time
Load does not work；
The circuit switch selects regular tap or tape light switch, and when grid cut-off and the circuit switch closes
When conjunction, the controllable silicon dimmer is not turned on, and the state detection circuit detects the current rectifying and wave filtering circuit output
Voltage signal be 0 volt of voltage signal, and output test result gives the micro-control unit, the micro-control unit control
The system high frequency voltage generation circuit work, the high frequency voltage generation circuit generate a high-frequency alternating current and export and give
The voltage coupling circuit, high-frequency alternating current after the described voltage coupling circuit coupling using the circuit switch,
The controllable silicon dimmer conducting, the current rectifying and wave filtering circuit convert alternating current as direct current, and the state-detection is electric
Road detects that the voltage signal of the current rectifying and wave filtering circuit output is the voltage signal of Y4 volt, and output test result is to described
Micro-control unit, the work of DC-DC emergency lighting circuit described in the micro-control unit controls, the battery passes through institute
The DC-DC emergency lighting circuit stated gives the emergency lighting LED load normal power supply, the emergency lighting LED load point
Bright illumination；
It is above-mentioned, Y1 >=Y2 > Y4 > Y3 > 0.
The normal illumination LED load and the emergency lighting LED load are two independent LED light sources.
The normal illumination LED load and the emergency lighting LED load are the same LED light source, the tune
Light drive circuit, the DC-DC emergency lighting circuit and the micro-control unit are altogether.
Compared with the prior art, the advantages of the utility model are:
1) when being under normal circumstances that power grid has electricity and circuit switch is closed, city's low frequency ac is through circuit switch, controllable
Normal illumination LED load is supplied to after silicon light modulator, current rectifying and wave filtering circuit and dimming driving circuit；In abnormal cases, state
Detection circuit detects the voltage signal of current rectifying and wave filtering circuit output, and transmits testing result to micro-control unit, micro-control unit
Whether it is whether 0 control high frequency voltage generation circuit works according to the voltage value of voltage signal, the work of high frequency voltage generation circuit
When generate high-frequency alternating current, which is input to the voltage coupling circuit connecting with power grid, according to the height of voltage, from
And judge the switch situation of power grid, circuit switch and controllable silicon dimmer, can detect well be switch OFF also
It is controllable silicon dimmer shutdown, in switch OFF, emergency lighting LED load does not work, and detects in controllable silicon dimmer shutdown
Whether power grid powers off, and grid cut-off emergency lighting work, i.e. micro-control unit start DC-DC emergency lighting circuit, shines emergency
Bright LED load is lighted, and power grid does not power off the emergency lighting i.e. emergency lighting LED load that do not work and do not work.
2) due to the interior visible of controllable silicon dimmer be a resistance and a capacitor series connection after again with it is silicon-controlled in parallel,
When power grid has electricity and circuit switch is closed, can directly trigger in controllable silicon dimmer silicon-controlled leads controllable silicon dimmer
It is logical；When grid cut-off, controllable silicon dimmer do not trigger it is silicon-controlled be not turned on, needed at this time by the RC in controllable silicon dimmer
Controllable silicon dimmer is connected in circuit, and because there are capacitors in the circuit RC in controllable silicon dimmer, and capacitor has separated by direct communication
The characteristic of low frequency is hindered with logical high frequency, therefore needs to generate a high-frequency alternating current using high frequency voltage generation circuit by thyristor regulating
Controllable silicon dimmer is connected in the circuit RC in light device.
Detailed description of the invention
Fig. 1 is the composed structure schematic diagram of existing emergency circuit；
Fig. 2 is the composed structure schematic diagram of the LED emergency circuit of the compatible silicon controlled light modulator of embodiment one；
Fig. 3 is the circuit diagram of the LED emergency circuit of the compatible silicon controlled light modulator of embodiment one；
Fig. 4 is the composed structure schematic diagram of the LED emergency circuit of the compatible silicon controlled light modulator of embodiment two.
Specific embodiment
The utility model is described in further detail below in conjunction with figure embodiment.
Embodiment one:
A kind of LED emergency circuit for compatible silicon controlled light modulator that the present embodiment proposes, as shown in Figure 2 comprising circuit
Switch 1, controllable silicon dimmer 2, voltage coupling circuit 3, current rectifying and wave filtering circuit 4, state detection circuit 5, dimming driving circuit 6,
Micro-control unit 7, the high frequency voltage generation circuit 8 of alternating component, DC-DC emergency lighting circuit 9, battery charger 10 and electricity
Pond 11, the L output line for city's low frequency ac that power grid provides are sequentially connected after circuit switch 1 and controllable silicon dimmer 2 and rectification
The input terminal of filter circuit 4 connects, after the N output line connection voltage coupling circuit 3 for city's low frequency ac that power grid provides with it is whole
The input terminal connection of filter circuit 4 is flowed, the output end of current rectifying and wave filtering circuit 4 is electric with state detection circuit 5 and light modulation driving respectively
The input terminal on road 6 connects, and the output end of dimming driving circuit 6 is connect with normal illumination LED load 12 all the way, light modulation driving electricity
The another way of the output end on road 6 is connect with the input terminal of battery charger 10, the output end and battery of battery charger 10
11 connections, the output end of state detection circuit 5 are connect with micro-control unit 7, micro-control unit 7 and high frequency voltage generation circuit 8
Control terminal connection, the output end of high frequency voltage generation circuit 8 connect with voltage coupling circuit 3, micro-control unit 7 and DC-DC
The control terminal of emergency lighting circuit 9 connects, and the output end of DC-DC emergency lighting circuit 9 is connect with emergency lighting LED load 13,
Battery 11 is connect with micro-control unit 7 and DC-DC emergency lighting circuit 9；When power grid has electricity and the closure of circuit switch 1, rectification filter
Wave circuit 4 converts alternating current as direct current, and state detection circuit 5 detects that the voltage signal that current rectifying and wave filtering circuit 4 exports is non-
Zero voltage signal, micro-control unit 7 controls high frequency voltage generation circuit 8 and DC-DC emergency lighting circuit 9 does not work, and rectifies
To dimming driving circuit 6 and battery charger 10, dimming driving circuit 6 drives normally the voltage signal that filter circuit 4 exports
Illumination LED load 12 is lighted, and battery charger 10 is the charging of battery 11；Power grid have electricity and circuit switch 1 disconnect when or power grid
Power-off and when circuit switch 1 disconnects or when grid cut-off and circuit switch 1 are closed, that is, when there is accident power-off, state-detection electricity
Detect the voltage signal that current rectifying and wave filtering circuit 4 exports, the micro-control when state detection circuit 5 detects the voltage signal of non-zero in road 5
Unit 7 processed controls high frequency voltage generation circuit 8 and DC-DC emergency lighting circuit 9 does not work；0 is detected in state detection circuit 5
Micro-control unit 7 controls high frequency voltage generation circuit 8 and generates high-frequency alternating current, 3 coupling of voltage coupling circuit when the voltage signal of volt
It closes after high-frequency alternating current through circuit switch 1 and controllable silicon dimmer 2, current rectifying and wave filtering circuit 4 converts alternating current as direct current, shape
State detection circuit 5 detects the voltage signal of the output of current rectifying and wave filtering circuit 4 again, still detects 0 volt of electricity in state detection circuit 5
Micro-control unit 7 controls DC-DC emergency lighting circuit 9 and does not work when pressing signal, detects non-zero in state detection circuit 5
When voltage signal micro-control unit 7 according to the size of the voltage value of voltage signal control DC-DC emergency lighting circuit 9 do not work or
DC-DC emergency lighting circuit 9 is controlled as the power supply of emergency lighting LED load 13.
In the present embodiment, circuit switch 1 can be regular tap, or tape light switch, tape light are opened
Pass is made of indicator light, resistance and regular tap, indicator light connection in series with a resistor, the other end of indicator light and regular tap
The other end of the other end and regular tap of one end connection and resistance connects, and makes to be connected in parallel on after indicator light is in series with a resistor and commonly open
The both ends of pass.
Four kinds of situations of the course of work of the LED emergency circuit point, specific as follows:
A, circuit switch 1 selects regular tap or tape light switch, when power grid has electricity and circuit switch 1 is closed, electricity
City's low frequency ac that net provides is connected controllable silicon dimmer 2 after circuit switch 1 and controllable silicon dimmer 2, rectifying and wave-filtering
Circuit 4 converts alternating current as direct current, and state detection circuit 5 detects the voltage signal that current rectifying and wave filtering circuit 4 exports for Y1 volt
Voltage signal, and output test result, to micro-control unit 7, micro-control unit 7 controls high frequency voltage generation circuit 8 and DC-
DC emergency lighting circuit 9 does not work, and the voltage signal that current rectifying and wave filtering circuit 4 exports at this time is to dimming driving circuit 6 and battery
Charging circuit 10, dimming driving circuit 6 drive normal illumination LED load 12 to light, and battery charger 10 is that battery 11 fills
Electricity.
B, circuit switch 1 selects regular tap, and when power grid has electricity and circuit switch 1 disconnects, controllable silicon dimmer 2 is not
Conducting, state detection circuit 5 detects that the voltage signal that current rectifying and wave filtering circuit 4 exports is 0 volt of voltage signal, and exports detection
As a result micro-control unit 7 is given, micro-control unit 7 controls high frequency voltage generation circuit 8 and works, and high frequency voltage generation circuit 8 generates
One high-frequency alternating current is simultaneously exported to voltage coupling circuit 3, and high-frequency alternating current is after the coupling of voltage coupling circuit 3 using circuit
Switch 1, due to needing to disconnect by circuit switch 1 and circuit switch 1, controllable silicon dimmer 2 is not turned on, state-detection electricity
Road 5 detects that the voltage signal that current rectifying and wave filtering circuit 4 exports still is 0 volt of voltage signal, and output test result is to microcontroller
Unit 7, micro-control unit 7 control DC-DC emergency lighting circuit 9 and do not work, and emergency lighting LED load 13 does not work at this time；
Circuit switch 1 selects tape light switch, when power grid has electricity and circuit switch 1 disconnects, since tape light is opened
The circuit conducting in series of the indicator light and resistance in the Central Shanxi Plain, therefore city's low frequency ac is connected structure through indicator light and resistance at this time
At circuit after using 2 triggering and conducting of controllable silicon dimmer is made after controllable silicon dimmer 2, controllable silicon dimmer 2 is connected, rectification
Filter circuit 4 converts alternating current as direct current, and the voltage signal that state detection circuit 5 detects that current rectifying and wave filtering circuit 4 exports is
The voltage signal of Y2 volt, and output test result, to micro-control unit 7, micro-control unit 7 controls 8 He of high frequency voltage generation circuit
DC-DC emergency lighting circuit 9 does not work, and emergency lighting LED load 13 does not work at this time.
C, circuit switch 1 selects regular tap, and when grid cut-off and the disconnection of circuit switch 1, controllable silicon dimmer 2 is not
Conducting, state detection circuit 5 detects that the voltage signal that current rectifying and wave filtering circuit 4 exports is 0 volt of voltage signal, and exports detection
As a result micro-control unit 7 is given, micro-control unit 7 controls high frequency voltage generation circuit 8 and works, and high frequency voltage generation circuit 8 generates
One high-frequency alternating current is simultaneously exported to voltage coupling circuit 3, and high-frequency alternating current is after the coupling of voltage coupling circuit 3 using electricity
Way switch 1, due to needing to disconnect by circuit switch 1 and circuit switch 1, controllable silicon dimmer 2 is not turned on, state-detection
Circuit 5 detects that the voltage signal that current rectifying and wave filtering circuit 4 exports still is 0 volt of voltage signal, and output test result is to micro-control
Unit 7 processed, micro-control unit 7 control DC-DC emergency lighting circuit 9 and do not work, and emergency lighting LED load 13 does not work at this time；
Circuit switch 1 selects tape light switch, when grid cut-off and the disconnection of circuit switch 1, since tape light is opened
The circuit conducting in series of the indicator light and resistance in the Central Shanxi Plain, and power grid is out of power, therefore controllable silicon dimmer 2 is not turned on, controllably
Silicon light modulator 2 is not turned on, and the voltage that state detection circuit 5 detects that the voltage signal that current rectifying and wave filtering circuit 4 exports is 0 volt is believed
Number, and output test result, to micro-control unit 7, micro-control unit 7 controls high frequency voltage generation circuit 8 and works, high frequency voltage
Generation circuit 8 generates a high-frequency alternating current and exports to voltage coupling circuit 3, and high-frequency alternating current is through 3 coupling of voltage coupling circuit
Using circuit switch 1 after conjunction, controllable silicon dimmer 2 is connected, and current rectifying and wave filtering circuit 4 converts alternating current as direct current, and state is examined
Slowdown monitoring circuit 5 detects that the voltage signal that current rectifying and wave filtering circuit 4 exports is the voltage signal of Y3 volt, and output test result is to micro-control
Unit 7 processed, micro-control unit 7 control DC-DC emergency lighting circuit 9 and do not work, and emergency lighting LED load 13 does not work at this time.
D, circuit switch 1 selects regular tap or tape light switch can when grid cut-off and the closure of circuit switch 1
Control silicon light modulator 2 is not turned on, and the voltage that state detection circuit 5 detects that the voltage signal that current rectifying and wave filtering circuit 4 exports is 0 volt is believed
Number, and output test result, to micro-control unit 7, micro-control unit 7 controls high frequency voltage generation circuit 8 and works, high frequency voltage
Generation circuit 8 generates a high-frequency alternating current and exports to voltage coupling circuit 3, and high-frequency alternating current is through 3 coupling of voltage coupling circuit
Using circuit switch 1 after conjunction, controllable silicon dimmer 2 is connected, and current rectifying and wave filtering circuit 4 converts alternating current as direct current, and state is examined
Slowdown monitoring circuit 5 detects that the voltage signal that current rectifying and wave filtering circuit 4 exports is the voltage signal of Y4 volt, and output test result is to micro-control
Unit 7 processed, micro-control unit 7 control DC-DC emergency lighting circuit 9 and work, and battery is answered by DC-DC emergency lighting circuit 9
Anxious illumination LED loads 13 normal power supplies, and emergency lighting LED load 13 lights illumination.
Above-mentioned, Y1 >=Y2 > Y4 > Y3 > 0 is previously stored with Y1 volt, Y2 volt, Y3 volt, Y4 volt and 0 volt in micro-control unit 7
Totally 5 voltage values, the voltage value for the voltage signal that state detection circuit 5 detects when which works are transferred to micro-
Control unit 7, micro-control unit 7 compare the voltage value and pre-stored voltage value received, subsequent how to execute are determined.
In the present embodiment, normal illumination LED load 12 and emergency lighting LED load 13 are two independent LED light
Source；Or normal illumination LED load 12 and emergency lighting LED load 13 are the same LED light source, require dimming driving circuit at this time
6, DC-DC emergency lighting circuit 9 and micro-control unit 7 be altogether.
Fig. 3 gives the circuit diagram of the LED emergency circuit of the present embodiment.
Embodiment two:
The LED emergency circuit for a kind of compatible silicon controlled light modulator that the present embodiment proposes, as shown in figure 4, its voltage couples
The connection type of circuit 3 is different from the LED emergency circuit of embodiment one, and the LED emergency circuit of the present embodiment includes circuit switch
1, controllable silicon dimmer 2, voltage coupling circuit 3, current rectifying and wave filtering circuit 4, state detection circuit 5, dimming driving circuit 6, micro-control
Unit 7, the high frequency voltage generation circuit 8 of alternating component, DC-DC emergency lighting circuit 9, battery charger 10 and battery processed
11, the L output line for city's low frequency ac that power grid provides is sequentially connected voltage coupling circuit 3, circuit switch 1 and controllable silicon light modulation
It is connect after device 2 with the input terminal of current rectifying and wave filtering circuit 4, N output line and the rectifying and wave-filtering electricity for city's low frequency ac that power grid provides
The input terminal on road 4 connects, the input with state detection circuit 5 and dimming driving circuit 6 respectively of the output end of current rectifying and wave filtering circuit 4
End connection, the output end of dimming driving circuit 6 are connect with normal illumination LED load 12 all the way, the output of dimming driving circuit 6
The another way at end is connect with the input terminal of battery charger 10, and the output end of battery charger 10 is connect with battery 11, shape
The output end of state detection circuit 5 is connect with micro-control unit 7, and the control terminal of micro-control unit 7 and high frequency voltage generation circuit 8 connects
It connects, the output end of high frequency voltage generation circuit 8 is connect with voltage coupling circuit 3, micro-control unit 7 and DC-DC emergency lighting electricity
The control terminal on road 9 connects, and the output end of DC-DC emergency lighting circuit 9 is connect with emergency lighting LED load 13, battery 11 with it is micro-
Control unit 7 and DC-DC emergency lighting circuit 9 connect.
In the above two embodiments, circuit switch 1 can select regular tap, tape light can also be selected to switch；
Controllable silicon dimmer 2 uses the prior art；Voltage coupling circuit 3 use the prior art, such as use existing transformer coupled electricity
Road；Current rectifying and wave filtering circuit 4 uses the prior art；State detection circuit 5 is only used for the voltage letter that detection current rectifying and wave filtering circuit 4 exports
Number, can be used the existing circuit for detectable voltage signals, state detection circuit 5 shown in Fig. 3 by a capacitor,
One zener diode and three resistance compositions；Dimming driving circuit 6 uses the prior art；Micro-control unit 7 is using existing
The single-chip microcontroller of model HT66F006；The high frequency voltage generation circuit 8 of alternating component uses the prior art；DC-DC emergency lighting
Circuit 9 uses the prior art；Battery charger 10 uses the prior art.
Claims (8)
1. a kind of LED emergency circuit of compatible silicon controlled light modulator, including current rectifying and wave filtering circuit, dimming driving circuit, DC-DC are answered
Anxious lighting circuit, battery charger and battery, the output end of the current rectifying and wave filtering circuit and the dimming driving circuit
Input terminal connection, the output end of the dimming driving circuit connect with normal illumination LED load all the way, the light modulation
The another way of the output end of driving circuit is connect with the input terminal of the battery charger, the battery charger
Output end is connect with the battery, and the battery is connect with the DC-DC emergency lighting circuit, and the DC-DC is answered
The output end of anxious lighting circuit is connect with emergency lighting LED load, it is characterised in that: the LED emergency circuit further includes that circuit is opened
Pass, controllable silicon dimmer, voltage coupling circuit, state detection circuit, micro-control unit, the high frequency voltage generation of alternating component are electric
Road, whether the voltage value that the micro-control unit is detected according to the state detection circuit, which is 0 volt, decides whether to control
The high frequency voltage generation circuit work generates high-frequency alternating current and is sent to when the high frequency voltage generation circuit works
The voltage coupling circuit, by the circuit switch and described after the voltage coupling circuit couples high frequency alternating current
Controllable silicon dimmer feed back to the state detection circuit, the micro-control unit is according to the state detection circuit
The size of the voltage value detected decides whether to control the DC-DC emergency lighting circuit work.
2. a kind of LED emergency circuit of compatible silicon controlled light modulator according to claim 1, it is characterised in that: power grid mentions
The L output line of city's low frequency ac of confession be sequentially connected after the circuit switch and the controllable silicon dimmer with it is described
The input terminal of current rectifying and wave filtering circuit connects, and the voltage that the N output line connection for city's low frequency ac that power grid provides is described couples electricity
The input terminal of current rectifying and wave filtering circuit described in Lu Houyu connects, the output end of the current rectifying and wave filtering circuit also with the state
Detection circuit connection, the output end of the state detection circuit are connect with the micro-control unit, the microcontroller list
First control terminal with the high frequency voltage generation circuit is connect, the output end of the high frequency voltage generation circuit and described
The connection of voltage coupling circuit, the micro-control unit is connect with the control terminal of the DC-DC emergency lighting circuit, described
Battery is also connect with the micro-control unit.
3. a kind of LED emergency circuit of compatible silicon controlled light modulator according to claim 1, it is characterised in that: power grid mentions
The L output line of city's low frequency ac of confession be sequentially connected the voltage coupling circuit, the circuit switch and it is described can
It is connect after control silicon light modulator with the input terminal of the current rectifying and wave filtering circuit, the N output line for city's low frequency ac that power grid provides
Connect with the input terminal of the current rectifying and wave filtering circuit, the output end of the current rectifying and wave filtering circuit also with the state-detection
Circuit connection, the output end of the state detection circuit are connect with the micro-control unit, the micro-control unit with
The control terminal of the high frequency voltage generation circuit connects, the output end of the high frequency voltage generation circuit and the voltage
Coupling circuit connection, the micro-control unit are connect with the control terminal of the DC-DC emergency lighting circuit, the battery
Also it is connect with the micro-control unit.
4. a kind of LED emergency circuit of compatible silicon controlled light modulator according to claim 2 or 3, it is characterised in that: power grid
When having electric and described circuit switch closure, the current rectifying and wave filtering circuit converts alternating current as direct current, and the state is examined
Slowdown monitoring circuit detects that the voltage signal of the current rectifying and wave filtering circuit output is the voltage signal of non-zero, the micro-control unit
The control high frequency voltage generation circuit and the DC-DC emergency lighting circuit do not work, the current rectifying and wave filtering circuit
The voltage signal exported gives the dimming driving circuit and the battery charger, the dimming driving circuit driving
The normal illumination LED load is lighted, and the battery charger is that the battery charges；
Power grid has electricity and when the circuit switch disconnects or when grid cut-off and the circuit switch disconnects or grid cut-off
And when described circuit switch closure, the voltage letter of the state detection circuit detection current rectifying and wave filtering circuit output
Number, when the state detection circuit detects the voltage signal of non-zero described in micro-control unit controls described in high-frequency electrical
Pressure generation circuit and the DC-DC emergency lighting circuit do not work；0 volt of voltage is detected in the state detection circuit
High frequency voltage generation circuit described in micro-control unit controls described in when signal generates high-frequency alternating current, the voltage coupling
Pass through the circuit switch and the controllable silicon dimmer, the current rectifying and wave filtering circuit after circuit couples high frequency alternating current
Alternating current is converted as direct current, the state detection circuit detects the voltage letter of the current rectifying and wave filtering circuit output again
Number, when the state detection circuit still detects 0 volt of voltage signal described in micro-control unit controls described in DC-DC
Emergency lighting circuit does not work, when the state detection circuit detects the voltage signal of non-zero described in micro-control unit
According to the control of the size of the voltage value of voltage signal, the DC-DC emergency lighting circuit does not work or controls the DC-DC
Emergency lighting circuit is that the emergency lighting LED load is powered.
5. a kind of LED emergency circuit of compatible silicon controlled light modulator according to claim 4, it is characterised in that: described
Circuit switch is that regular tap or tape light switch, and the tape light is switched by indicator light, resistance and regular tap group
At, the indicator light and the resistance are connected in series, and the one of the other end of the indicator light and the regular tap
The other end of end connection and the resistance is connect with the other end of the regular tap, make the indicator light with it is described
The both ends of the regular tap are connected in parallel on after resistance series connection.
6. a kind of LED emergency circuit of compatible silicon controlled light modulator according to claim 5, it is characterised in that: described
Circuit switch selects regular tap or tape light switch, and when power grid has electricity and the circuit switch is closed, power grid is provided
City's low frequency ac the controllable silicon dimmer is connected after the circuit switch and the controllable silicon dimmer,
The current rectifying and wave filtering circuit converts alternating current as direct current, and the state detection circuit detects the rectifying and wave-filtering electricity
The voltage signal of road output is the voltage signal of Y1 volt, and output test result gives the micro-control unit, the micro-control
The unit control processed high frequency voltage generation circuit and the DC-DC emergency lighting circuit do not work, described at this time
The voltage signal that current rectifying and wave filtering circuit exports gives the dimming driving circuit and the battery charger, the light modulation
The driving circuit driving normal illumination LED load is lighted, and the battery charger is that the battery charges；
The circuit switch selects regular tap, and when power grid has electricity and the circuit switch disconnects, described is silicon-controlled
Light modulator is not turned on, and the state detection circuit detects that the voltage signal of the current rectifying and wave filtering circuit output is 0 volt
Voltage signal, and output test result gives the micro-control unit, high frequency voltage described in the micro-control unit controls
Generation circuit work, the high frequency voltage generation circuit, which generates a high-frequency alternating current and exports, couples electricity to the voltage
Road, high-frequency alternating current is after the voltage coupling circuit coupling using the circuit switch, the controllable silicon light modulation
Device is not turned on, and the state detection circuit detects that the voltage signal of the current rectifying and wave filtering circuit output is still 0 volt of electricity
Signal is pressed, and output test result gives the micro-control unit, the emergency of DC-DC described in the micro-control unit controls is shone
Bright circuit does not work, and the emergency lighting LED load does not work at this time；
The circuit switch selects tape light switch, and when power grid has electricity and the circuit switch disconnects, described can
Silicon dimmer conduction is controlled, the current rectifying and wave filtering circuit converts alternating current as direct current, and the state detection circuit detects
The voltage signal of the current rectifying and wave filtering circuit output is the voltage signal of Y2 volt, and output test result gives the microcontroller
Unit, high frequency voltage generation circuit and the DC-DC emergency lighting circuit described in the micro-control unit controls are not
Work, the emergency lighting LED load does not work at this time；
The circuit switch selects regular tap, and when grid cut-off and when the circuit switch disconnects, described is silicon-controlled
Light modulator is not turned on, and the state detection circuit detects that the voltage signal of the current rectifying and wave filtering circuit output is 0 volt
Voltage signal, and output test result gives the micro-control unit, high frequency voltage described in the micro-control unit controls
Generation circuit work, the high frequency voltage generation circuit, which generates a high-frequency alternating current and exports, couples electricity to the voltage
Road, high-frequency alternating current is after the voltage coupling circuit coupling using the circuit switch, the controllable silicon light modulation
Device is not turned on, and the state detection circuit detects that the voltage signal of the current rectifying and wave filtering circuit output is still 0 volt of electricity
Signal is pressed, and output test result gives the micro-control unit, the emergency of DC-DC described in the micro-control unit controls is shone
Bright circuit does not work, and the emergency lighting LED load does not work at this time；
The circuit switch selects tape light switch, and when grid cut-off and when the circuit switch disconnects, described can
Control silicon light modulator is not turned on, and the state detection circuit detects that the voltage signal of the current rectifying and wave filtering circuit output is 0
The voltage signal of volt, and output test result gives the micro-control unit, high frequency described in the micro-control unit controls
Voltage generation circuit work, the high frequency voltage generation circuit generate a high-frequency alternating current and export to the voltage coupling
Circuit is closed, for high-frequency alternating current using the circuit switch after the voltage coupling circuit coupling, described is silicon-controlled
Dimmer conduction, the current rectifying and wave filtering circuit convert alternating current as direct current, and the state detection circuit detects described
Current rectifying and wave filtering circuit output voltage signal be Y3 volt voltage signal, and output test result give the microcontroller list
Member, DC-DC emergency lighting circuit described in the micro-control unit controls do not work, and the emergency lighting LED is negative at this time
Load does not work；
The circuit switch selects regular tap or tape light switch, when grid cut-off and the circuit switch closure
When, the controllable silicon dimmer is not turned on, and the state detection circuit detects the current rectifying and wave filtering circuit output
The voltage signal that voltage signal is 0 volt, and output test result gives the micro-control unit, the micro-control unit controls
The high frequency voltage generation circuit work, the high frequency voltage generation circuit generate a high-frequency alternating current and export to institute
The voltage coupling circuit stated, high-frequency alternating current is after the voltage coupling circuit coupling using the circuit switch, institute
The controllable silicon dimmer conducting stated, the current rectifying and wave filtering circuit convert alternating current as direct current, the state detection circuit
The voltage signal for detecting the current rectifying and wave filtering circuit output is the voltage signal of Y4 volt, and output test result is to described
Micro-control unit, the work of DC-DC emergency lighting circuit described in the micro-control unit controls, the battery passes through described
DC-DC emergency lighting circuit give the emergency lighting LED load normal power supply, the emergency lighting LED load lights
Illumination；
It is above-mentioned, Y1 >=Y2 > Y4 > Y3 > 0.
7. a kind of LED emergency circuit of compatible silicon controlled light modulator according to claim 6, it is characterised in that: described
Normal illumination LED load and the emergency lighting LED load are two independent LED light sources.
8. a kind of LED emergency circuit of compatible silicon controlled light modulator according to claim 6, it is characterised in that: described
Normal illumination LED load and the emergency lighting LED load are the same LED light source, the dimming driving circuit, described
DC-DC emergency lighting circuit and the micro-control unit altogether.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821347665.XU CN209299556U (en) | 2018-08-21 | 2018-08-21 | A kind of LED emergency circuit of compatible silicon controlled light modulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821347665.XU CN209299556U (en) | 2018-08-21 | 2018-08-21 | A kind of LED emergency circuit of compatible silicon controlled light modulator |
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| Publication Number | Publication Date |
|---|---|
| CN209299556U true CN209299556U (en) | 2019-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821347665.XU Active CN209299556U (en) | 2018-08-21 | 2018-08-21 | A kind of LED emergency circuit of compatible silicon controlled light modulator |
Country Status (1)
| Country | Link |
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| CN (1) | CN209299556U (en) |
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2018
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