CN102548171B - Control circuit of emergency lamp - Google Patents
Control circuit of emergency lamp Download PDFInfo
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- CN102548171B CN102548171B CN201010606260.5A CN201010606260A CN102548171B CN 102548171 B CN102548171 B CN 102548171B CN 201010606260 A CN201010606260 A CN 201010606260A CN 102548171 B CN102548171 B CN 102548171B
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Abstract
The invention relates to a control circuit of an emergency lamp, comprising an emergency battery, a charging circuit, a power supply circuit and a switch circuit. The emergency battery is connected with the charging circuit and supplies power to the power supply circuit according to the signals of the switch circuit, a voltage regulator tube Z4 is arranged between the emergency battery and the switch circuit, the anode of the voltage regulator tube Z4 is connected with the switch circuit, the cathode of the voltage regulator tube Z4 is connected with the anode of the emergency battery, the cathode of the emergency battery is grounded, the breakdown voltage of the voltage regulator tube Z4 is larger than the saturation voltage of the emergency battery. When being produced or maintained, the control circuit of the emergency lamp is connected with the output end of a battery circuit and can not output high voltage, and when the control circuit works normally, the emergency lamp can be lightened normally, so that good electric shock prevention effect can be achieved.
Description
Technical field
The present invention relates to circuit control field, more particularly, relate to a kind of control circuit of emergency luminaire.
Background technology
Emergency light is to be powered by emergency power supply, for the emergency lighting of necessary place, the light fixture that can light immediately after main electric power-off.Have at present the light fixture of emergency function, in not main electric situation, connect battery, output will output HIGH voltage, and emergency light is lit.But produce or while keeping in repair at light fixture, output also can output HIGH voltage, jeopardizes like this operator safety.
Summary of the invention
The technical problem to be solved in the present invention is, the defect that while carrying out light fixture production or maintenance for the control circuit of the emergency light of prior art, output can output HIGH voltage, provide a kind of produce or connect when maintenance battery circuit output can output HIGH voltage yet, and the control circuit of the emergency light of the protection against electric shock that emergency light can normally be lighted while normally working.
The technical solution adopted for the present invention to solve the technical problems is: the control circuit of constructing a kind of emergency light, comprise emergency cell, charging circuit, power supply circuits and switching circuit, described emergency cell is connected with described charging circuit, wherein said emergency cell is given described power supply circuits power supply according to the signal of described switching circuit, between described emergency cell and described switching circuit, be provided with voltage-stabiliser tube Z4, the anodic bonding of described voltage-stabiliser tube Z4 is to described switching circuit, the negative electrode of described voltage-stabiliser tube Z4 is connected to the positive pole of described emergency cell, the minus earth of described emergency cell, the puncture voltage of described voltage-stabiliser tube Z4 is greater than the saturation voltage of described emergency cell.
Described switching circuit comprises capacitor C 2, triode Q1, triode Q4, the anode of described capacitor C 2 is connected with the anode of described voltage-stabiliser tube Z4 and the control end of described triode Q1 respectively, the minus earth of described capacitor C 2, the input of described triode Q1 is connected with the control end of described triode Q4, the output head grounding of described triode Q1, the input of described triode Q4 is connected with the positive pole of described emergency cell, and the output of described triode Q4 is connected with described power supply circuits.
In the control circuit of emergency light of the present invention, described charging circuit comprises floating charge circuit, overcharge protection circuit and low-voltage protection circuit.
In the control circuit of emergency light of the present invention; described low-voltage protection circuit comprises voltage-stabiliser tube Z1, triode Q9, triode Q6; the negative electrode of described voltage-stabiliser tube Z1 is connected with the positive pole of described emergency cell; the anode of described voltage-stabiliser tube Z1 is connected with the control end of described triode Q9; the input of described triode Q9 is connected with the control end of described triode Q6; the output head grounding of described triode Q9; the input of described triode Q6 is connected with power supply VCC, and the output of described triode Q6 is connected with the positive pole of described emergency cell.
In the control circuit of emergency light of the present invention, described low-voltage protection circuit also comprises voltage-stabiliser tube Z2, triode Q8, triode Q5 and resistance R 18, the input of described triode Q5 is connected with the output of described triode Q6, the output of described triode Q5 is connected with the positive pole of described emergency cell, the control end of described triode Q5 is connected with the input of described triode Q8, the output head grounding of described triode Q8, the anodic bonding of the control end of described triode Q8 and described voltage-stabiliser tube Z2, the negative electrode of described voltage-stabiliser tube Z2 is connected with the positive pole of described emergency cell, described resistance R 18 is connected with input and the output of described triode Q5 respectively.
In the control circuit of emergency light of the present invention; described overcharge protection circuit comprises voltage-stabiliser tube Z3, triode Q7; the negative electrode of described voltage-stabiliser tube Z3 is connected with the positive pole of described emergency cell; the anode of described voltage-stabiliser tube Z3 is connected with the control end of described triode Q7; the input of described triode Q7 is connected with the control end of described triode Q8, the output head grounding of described triode Q7.
In the control circuit of emergency light of the present invention, the serve as reasons oscillation of power supply circuit of signal controlling of described switching circuit of described power supply circuits.
In the control circuit of emergency light of the present invention, described oscillation of power supply circuit comprises capacitor C 8, triode Q2 and triode Q3, the control end of the control end of described triode Q2 and described triode Q3 is connected with described switching circuit respectively, the output head grounding of described triode Q2, the output head grounding of described triode Q3, the input of described triode Q2 is connected with one end of described capacitor C 8 and the positive pole of described emergency cell respectively, and the input of described triode Q3 is connected with the other end of described capacitor C 8 and the positive pole of described emergency cell respectively.
In the control circuit of emergency light of the present invention, the control circuit of described emergency light also comprises output transformer, and described emergency light is fluorescent lamp, and described oscillation of power supply circuit is connected with described fluorescent lamp by described output transformer.
In the control circuit of emergency light of the present invention, the control circuit of described emergency light also comprises rectification circuit, and external communication electricity is connected with described charging circuit by described rectification circuit.
Implement the control circuit of emergency light of the present invention, there is following beneficial effect: battery circuit output is produced or connected when maintenance to the control circuit of this emergency light can output HIGH voltage yet, and emergency light can normally be lighted while normally working, plays the effect of good protection against electric shock.
Arranging of battery protecting circuit and floating charge circuit guaranteed normally discharging and recharging of emergency cell, extended the life-span of emergency cell.Switching circuit the timely switching having guaranteed between main power source and emergency cell is set.Power supply circuits the normal use that has guaranteed emergency light is set.Rectification circuit is converted to outside alternating current can be for the direct current of emergency cell charging.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the physical circuit figure of the preferred embodiment of the control circuit of emergency light of the present invention;
Fig. 2 is the structural representation of the first preferred embodiment of the control circuit of emergency light of the present invention;
Fig. 3 is the structural representation of the second preferred embodiment of the control circuit of emergency light of the present invention;
Fig. 4 is the structural representation of the 3rd preferred embodiment of the control circuit of emergency light of the present invention;
Fig. 5 is the structural representation of the 4th preferred embodiment of the control circuit of emergency light of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
In the structural representation of the first preferred embodiment of the control circuit of the emergency light of the present invention shown in Fig. 2, the control circuit of described emergency light comprises emergency cell 1, charging circuit 2, power supply circuits 3 and switching circuit 4, when interrupting for external power source, emergency cell 1 powers to power supply circuits 3, charging circuit 2 is for charging to emergency cell 1, power supply circuits 3 are for to emergency light power supply, and switching circuit 4 is for starting or cutting out emergency cell 1 power supply to power supply circuits 3.Emergency cell 1 is connected with charging circuit 2, emergency cell 1 is powered to power supply circuits 3 according to the signal of switching circuit 4, between emergency cell 1 and switching circuit 4, be provided with voltage-stabiliser tube Z4, the anodic bonding of voltage-stabiliser tube Z4 is to switching circuit 4, the negative electrode of voltage-stabiliser tube Z4 is connected to the positive pole of emergency cell 1, the minus earth of emergency cell 1, the puncture voltage of voltage-stabiliser tube Z4 is greater than the saturation voltage of emergency cell 1.When the control circuit of this emergency light uses, as shown in Figure 1, in the situation that having external power source, VCC charges to emergency cell 1 by triode Q6, triode Q5 and diode D11, charge to capacitor C 2, now the base stage of triode Q1 does not have electric current input, in cut-off state simultaneously, switching circuit 4 cuts out, and emergency cell 1 powers to power supply circuits 3, in the time that external power source interrupts, VCC is output as zero, and capacitor C 2 is discharged, at this moment triode Q1 conducting, triode Q4 conducting simultaneously, causes switching circuit 4 to be opened, at this moment switching circuit 4 sends power supply signal, and emergency cell 1 starts to power to power supply circuits 3, and power supply circuits 3 are lighted emergency light illumination, in emergency luminaire production process, VCC is output as zero, capacitor C 2 cannot be charged, when the emergency cell 1 that has an electric weight is installed on light fixture, because the puncture voltage of voltage-stabiliser tube Z4 is greater than the saturation voltage of emergency cell 1, therefore Z4 can conducting, guarantee that switching circuit 4 can not open, emergency cell 1 powers can to power supply circuits 3, the output of so just guaranteeing battery circuit in emergency luminaire production process can output HIGH voltage, and then reach protection operator safety object, the emergency cell 1 that has electric weight has been installed when dispatching from the factory simultaneously, VCC connects after external power source, along with the charging of capacitor C 2, user can check the emergency function of emergency light at once by cutting off external power source, guarantee the convenience that user uses.Battery circuit output is produced or connected when maintenance to the control circuit of this emergency light can output HIGH voltage yet, and emergency light can normally be lighted while normally working, plays the effect of good protection against electric shock.
In the structural representation of the second preferred embodiment of the control circuit of the emergency light of the present invention shown in Fig. 3, charging circuit 2 comprises floating charge circuit 21, overcharge protection circuit 22 and low-voltage protection circuit 23.Low-voltage protection circuit 23 can not adopt large current charge when guaranteeing emergency cell 1 low-voltage, guarantees the normal service life of emergency cell 1, the low current charge of floating charge circuit 21 during for emergency cell 1 low-voltage.Overcharge protection circuit 22 is for carrying out over-charge protective to emergency cell 1.Low-voltage protection circuit 23 comprises voltage-stabiliser tube Z1, triode Q9, triode Q6; the negative electrode of described voltage-stabiliser tube Z1 is connected with the positive pole of described emergency cell 1; the anode of described voltage-stabiliser tube Z1 is connected with the control end of described triode Q9; the input of described triode Q9 is connected with the control end of described triode Q6; the output head grounding of described triode Q9; the input of described triode Q6 is connected with power supply VCC, and the output of described triode Q6 is connected with the positive pole of described emergency cell 1.Low-voltage protection circuit 23 also comprises voltage-stabiliser tube Z2, triode Q8, triode Q5 and resistance R 18, the input of described triode Q5 is connected with the output of described triode Q6, the output of described triode Q5 is connected with the positive pole of described emergency cell 1, the control end of described triode Q5 is connected with the input of described triode Q8, the output head grounding of described triode Q8, the anodic bonding of the control end of described triode Q8 and described voltage-stabiliser tube Z2, the negative electrode of described voltage-stabiliser tube Z2 is connected with the positive pole of described emergency cell 1, described resistance R 18 is connected with input and the output of described triode Q5 respectively.Overcharge protection circuit 22 comprises voltage-stabiliser tube Z3, triode Q7; the negative electrode of described voltage-stabiliser tube Z3 is connected with the positive pole of emergency cell 1; the anode of described voltage-stabiliser tube Z3 is connected with the control end of described triode Q7; the input of described triode Q7 is connected with the control end of described triode Q8, the output head grounding of described triode Q7.Floating charge circuit 21 comprises resistance R 17, and the two ends of resistance R 17 are connected with the positive pole of power supply VCC and emergency cell 1 respectively.
As shown in Figure 1, the puncture voltage of voltage-stabiliser tube Z1 is 6V, the puncture voltage of voltage-stabiliser tube Z2 is 6V, the puncture voltage of voltage-stabiliser tube Z3 is 8.2V, the saturation voltage of emergency cell 1 is 7.2V, in the time that the charging voltage of emergency cell 1 is less than 6V, voltage-stabiliser tube Z1, voltage-stabiliser tube Z2, voltage-stabiliser tube Z3 all end, and power supply VCC gives emergency cell 1 low current charge by floating charge circuit 21; In the time that the charging voltage of emergency cell 1 is greater than 6V, because resistance R 12 is less than resistance R 15, voltage-stabiliser tube Z1 conducting, triode Q9, triode Q6 conducting respectively, VCC charges to emergency cell 1 by triode Q6, resistance R 18; In the time that the charging voltage of emergency cell 1 further increases, voltage-stabiliser tube Z2 conducting, triode Q8, triode Q5 conducting respectively, VCC passes through triode Q6, triode Q5 to emergency cell 1 large current charge; In the time that the charging voltage of emergency cell 1 is greater than 8.2V, voltage-stabiliser tube Z3 conducting, triode Q7 conducting, cause triode Q8 and triode Q5 cut-off, at this moment VCC charges to emergency cell 1 by triode Q6, resistance R 18, makes up the internal loss of rechargeable battery, guarantees the normal service life of emergency cell 1.
As the preferred embodiment of the control circuit of emergency light of the present invention, switching circuit 4 comprises capacitor C 2, triode Q1, triode Q4, the anode of described capacitor C 2 is connected with the anode of described voltage-stabiliser tube Z4 and the control end of described triode Q1 respectively, the minus earth of described capacitor C 2, the input of described triode Q1 is connected with the control end of described triode Q4, the output head grounding of described triode Q1, the input of described triode Q4 is connected with the positive pole of described emergency cell 1, and the output of described triode Q4 is connected with described power supply circuits 3.As shown in Figure 1, in the time that external power source has electricity, external power source charges to capacitor C 2, triode Q1, triode Q4 cut-off, and switching circuit 4 disconnects emergency cell 1 power supply to power supply circuits 3; In the time of external cell power-off, capacitor C 2 is discharged, triode Q1, triode Q4 conducting, and switching circuit 4 sends signal makes emergency cell 1 power to power supply circuits 3.Switching circuit 4 the timely switching having guaranteed between main power source and emergency cell 1 is set.
In the structural representation of the 3rd preferred embodiment of the control circuit of the emergency light of the present invention shown in Fig. 4, power supply circuits 3 are the oscillation of power supply circuit by the signal controlling of switching circuit 4.Oscillation of power supply circuit comprises capacitor C 8, triode Q2 and triode Q3, the control end of the control end of described triode Q2 and described triode Q3 is connected with described switching circuit 4 respectively, the output head grounding of described triode Q2, the output head grounding of described triode Q3, the input of described triode Q2 is connected with one end of described capacitor C 8 and the positive pole of described emergency cell 1 respectively, and the input of described triode Q3 is connected with the other end of described capacitor C 8 and the positive pole of described emergency cell 1 respectively.The control circuit of emergency light also comprises output transformer 5, and described emergency light is fluorescent lamp 6, and oscillation of power supply circuit is connected with fluorescent lamp 6 by output transformer 5.As shown in Figure 1, when this vibration power supply circuits use, send control signal to the control end of triode Q2, triode Q3 by switching circuit 4, emergency cell 1 is given oscillation of power supply circuit supply, by triode Q2 and triode Q3 conducting realization vibration in turn, the frequency of vibrating by the size control of capacitor C 8.Output transformer 5 transfers to the output of oscillation of power supply circuit fluorescent lamp 6 and realizes the normal use of emergency light.
In the structural representation of the 4th preferred embodiment of the control circuit of the emergency light of the present invention shown in Fig. 5, the control circuit of described emergency light also comprises rectification circuit 7, and external communication electricity is connected with charging circuit 2 by rectification circuit 7.Rectification circuit 7 is converted to outside alternating current the direct current that can charge for emergency cell 1.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure transformation that utilizes specification of the present invention and accompanying drawing content to do, or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (9)
1. the control circuit of an emergency light, comprise emergency cell (1), charging circuit (2), power supply circuits (3) and switching circuit (4), described emergency cell (1) is connected with described charging circuit (2), it is characterized in that, described emergency cell (1) is given described power supply circuits (3) power supply according to the signal of described switching circuit (4), between described emergency cell (1) and described switching circuit (4), be provided with voltage-stabiliser tube Z4, the anodic bonding of described voltage-stabiliser tube Z4 is to described switching circuit (4), the negative electrode of described voltage-stabiliser tube Z4 is connected to the positive pole of described emergency cell (1), the minus earth of described emergency cell (1), the puncture voltage of described voltage-stabiliser tube Z4 is greater than the saturation voltage of described emergency cell (1),
Described switching circuit (4) comprises capacitor C 2, triode Q1, triode Q4, the anode of described capacitor C 2 is connected with the anode of described voltage-stabiliser tube Z4 and the control end of described triode Q1 respectively, the minus earth of described capacitor C 2, the input of described triode Q1 is connected with the control end of described triode Q4, the output head grounding of described triode Q1, the input of described triode Q4 is connected with the positive pole of described emergency cell (1), and the output of described triode Q4 is connected with described power supply circuits (3).
2. the control circuit of emergency light according to claim 1, is characterized in that, described charging circuit (2) comprises floating charge circuit (21), overcharge protection circuit (22) and low-voltage protection circuit (23).
3. the control circuit of emergency light according to claim 2, it is characterized in that, described low-voltage protection circuit (23) comprises voltage-stabiliser tube Z1, triode Q9, triode Q6, the negative electrode of described voltage-stabiliser tube Z1 is connected with the positive pole of described emergency cell (1), the anode of described voltage-stabiliser tube Z1 is connected with the control end of described triode Q9, the input of described triode Q9 is connected with the control end of described triode Q6, the output head grounding of described triode Q9, the input of described triode Q6 is connected with power supply VCC, the output of described triode Q6 is connected with the positive pole of described emergency cell (1).
4. the control circuit of emergency light according to claim 3, it is characterized in that, described low-voltage protection circuit (23) also comprises voltage-stabiliser tube Z2, triode Q8, triode Q5 and resistance R 18, the input of described triode Q5 is connected with the output of described triode Q6, the output of described triode Q5 is connected with the positive pole of described emergency cell (1), the control end of described triode Q5 is connected with the input of described triode Q8, the output head grounding of described triode Q8, the anodic bonding of the control end of described triode Q8 and described voltage-stabiliser tube Z2, the negative electrode of described voltage-stabiliser tube Z2 is connected with the positive pole of described emergency cell (1), described resistance R 18 is connected with input and the output of described triode Q5 respectively.
5. the control circuit of emergency light according to claim 4; it is characterized in that; described overcharge protection circuit (22) comprises voltage-stabiliser tube Z3, triode Q7; the negative electrode of described voltage-stabiliser tube Z3 is connected with the positive pole of described emergency cell (1); the anode of described voltage-stabiliser tube Z3 is connected with the control end of described triode Q7; the input of described triode Q7 is connected with the control end of described triode Q8, the output head grounding of described triode Q7.
6. the control circuit of emergency light according to claim 1, is characterized in that, the serve as reasons oscillation of power supply circuit of signal controlling of described switching circuit (4) of described power supply circuits (3).
7. the control circuit of emergency light according to claim 6, it is characterized in that, described oscillation of power supply circuit comprises capacitor C 8, triode Q2 and triode Q3, the control end of the control end of described triode Q2 and described triode Q3 is connected with described switching circuit (4) respectively, the output head grounding of described triode Q2, the output head grounding of described triode Q3, the input of described triode Q2 is connected with one end of described capacitor C 8 and the positive pole of described emergency cell (1) respectively, the input of described triode Q3 is connected with the other end of described capacitor C 8 and the positive pole of described emergency cell (1) respectively.
8. the control circuit of emergency light according to claim 6, it is characterized in that, the control circuit of described emergency light also comprises output transformer (5), and described emergency light is fluorescent lamp (6), and described oscillation of power supply circuit is connected with described fluorescent lamp (6) by described output transformer (5).
9. the control circuit of emergency light according to claim 1, is characterized in that, the control circuit of described emergency light also comprises rectification circuit (7), and external communication electricity is connected with described charging circuit (2) by described rectification circuit (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010606260.5A CN102548171B (en) | 2010-12-22 | 2010-12-22 | Control circuit of emergency lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010606260.5A CN102548171B (en) | 2010-12-22 | 2010-12-22 | Control circuit of emergency lamp |
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| Publication Number | Publication Date |
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| CN102548171A CN102548171A (en) | 2012-07-04 |
| CN102548171B true CN102548171B (en) | 2014-05-14 |
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| CN201010606260.5A Expired - Fee Related CN102548171B (en) | 2010-12-22 | 2010-12-22 | Control circuit of emergency lamp |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103857101B (en) * | 2012-11-29 | 2016-08-03 | 深圳市海洋王照明工程有限公司 | A kind of drive circuit and light fixture |
| CN104053291B (en) * | 2013-03-11 | 2016-08-03 | 深圳市海洋王照明工程有限公司 | fluorescent lamp emergency circuit |
Citations (4)
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| CN201430719Y (en) * | 2009-06-15 | 2010-03-24 | 常州绿威电器有限公司 | Electronic emergency inverter |
| CN201430466Y (en) * | 2009-07-03 | 2010-03-24 | 常州绿威电器有限公司 | Electronic emergency power supply for emergency light |
| CN201623913U (en) * | 2010-03-01 | 2010-11-03 | 阮树成 | Solar power supply self-excitation oscillation power synthesis fluorescent lamp ballast |
| CN201623914U (en) * | 2010-03-01 | 2010-11-03 | 阮树成 | Solar power supply independent excitation amplifying power synthesis fluorescent lamp ballast |
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2010
- 2010-12-22 CN CN201010606260.5A patent/CN102548171B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201430719Y (en) * | 2009-06-15 | 2010-03-24 | 常州绿威电器有限公司 | Electronic emergency inverter |
| CN201430466Y (en) * | 2009-07-03 | 2010-03-24 | 常州绿威电器有限公司 | Electronic emergency power supply for emergency light |
| CN201623913U (en) * | 2010-03-01 | 2010-11-03 | 阮树成 | Solar power supply self-excitation oscillation power synthesis fluorescent lamp ballast |
| CN201623914U (en) * | 2010-03-01 | 2010-11-03 | 阮树成 | Solar power supply independent excitation amplifying power synthesis fluorescent lamp ballast |
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Granted publication date: 20140514 Termination date: 20181222 |