CN1630453A - Emergency light control circuit - Google Patents
Emergency light control circuit Download PDFInfo
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- CN1630453A CN1630453A CN 200310109490 CN200310109490A CN1630453A CN 1630453 A CN1630453 A CN 1630453A CN 200310109490 CN200310109490 CN 200310109490 CN 200310109490 A CN200310109490 A CN 200310109490A CN 1630453 A CN1630453 A CN 1630453A
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Abstract
This invention discloses an emergency lamp control circuit, which contains power supply, controller, inverter, current control unit for controlling output current of controller, output control unit for controlling the output state of controller, detection unit for detecting and controlling the battery open circuit and short circuit, charge and discharge, power supply under-voltage and optical fault, protective unit for reducing fault occurrence. Said invention can make constant current charge to light source and constant voltage control to battery and set optimum trickled current according to different specification of battery.
Description
Technical field
The present invention relates to the emergency luminaire that throws light on, more specifically refer to a kind of emergency light control circuit of AC/DC.
Background technology
So name Si Yi, emergency light generally is used for emergency lighting.The inner (see figure 1) of traditional emergency light circuit has power unit, control section, inversion part.Power unit is when providing the lamp illumination, also the battery to inside charges, under normal conditions, so-called control section is only can be under the situation of deenergizing, play the simple control that starts the inversion part, the effect of inversion part mainly is that direct current is converted to alternating current, for lighting lamp.Fig. 2 has just illustrated a kind of present application comparatively typical case, emergency light circuit that function is relatively complete, in this circuit, the 220V alternating current is output dc voltage after transformation, rectification, filtering, charges the battery by resistance R 2, relay J 1 adhesive, fluorescent lamp is lighted by the electric main power supply.Because triode Q2 conducting Q1 ends, relay J 2 discharges, and the inversion part disconnects with battery.Cut off the power supply moment, triode Q2 ends, and capacitor C 2 is powered to Q1, relay J 2 adhesives, and relay J 1 discharges simultaneously, and the inversion part is then by rechargeable battery powered, and emergency light advances people's emergency rating.
Be lower than 0.7V when the rechargeable battery discharge voltage is reduced to triode Q2 base voltage gradually, relay J 2 discharges, and stops inversion, and emergency light quits work.
Though this traditional emergency light can play emergent effect, because circuit structure is fairly simple, its function is less, remains in following shortcoming:
Electric current and voltage to charging can not be controlled, and charging voltage changes with electrical network, and charging voltage can't be controlled, and can cause undercharge or overcharge, and influence rechargeable battery useful life.
Traditional emergency light circuit has only battery discharge to stop testing circuit, and accuracy of detection is not high, and consistency is poor.The measuring ability that does not have other in addition, as, the open circuit of rechargeable battery, short-circuit detecting, discharge and recharge that detection, line under-voltage detect, light source failure detects.
Controlled function is single, as does not have functions such as Current Control, the control of output optimum state, remote control.
In addition, traditional emergency light circuit does not have protective circuit, is easy to generate various faults.
See that therefrom traditional emergency light is incompatibility modern's life requirement, especially in the time may occurring because of power shortages, the life requirement when operating a switch outage.
Summary of the invention
The objective of the invention is the above-mentioned shortcoming that exists at traditional emergency light circuit, propose a kind of function comparatively complete, can be to the emergency light control circuit that charging current and voltage are controlled, fault is less.
To achieve these goals, the present invention adopts following technical scheme:
This emergency light control circuit comprises power unit, control section, inversion part, power unit provides DC power supply to control section, the output of power unit is connected to control section, control section partly carries out the inversion control that direct current becomes interchange to inversion, the output of control section is connected to the inversion part, described control section also comprises current control unit, output control unit, current control unit is controlled the output current size of control section, and output control unit is controlled the output state of control section.
This control circuit further comprises the test section, and the test section comprises open circuit, short-circuit detecting unit, charging and discharging detecting unit, and described open circuit short-circuit detecting unit detects external battery open circuit or short-circuit condition and detected signal is sent into control section; Described charging and discharging detecting unit detects external connection battery charge or discharge state, and detected signal is sent into control section.
Described test section further comprises line under-voltage detecting unit, light source failure detecting unit, and described line under-voltage detecting unit detects the under-voltage signal of external circuit and detected under-voltage signal is sent into control section; Described light source failure detecting unit detects the external light source fault-signal and detected signal is sent into control section.
This control circuit further comprises error protection part and indicator light part, and the error protection part is sent fault-signal into control section when breaking down; Indicator light partly receives the operating state index signal of control section output.
Compare with traditional emergency light control circuit, current control unit, output control unit have been set up in the emergency light control circuit of the present invention, current control unit is controlled the output current size of control section, and output control unit is controlled the output state of control section.Make this circuit carry out constant current charge and constant voltage control, promptly charge normal with constant current earlier, the cell voltage trend rated value that raises gradually the light source in the emergency light and battery.To be charged to capacity about 90% the time when battery, the constant voltage charge pattern replaces constant current charging mode, this pattern can be adjusted the charging current size automatically according to the real time charging state of battery, makes it into people's trickle state, and can set best trickle electric current arbitrarily according to different specification of battery.In addition, the increase of test section again can be to battery open circuit or short circuit, charge or discharge, whether power supply is under-voltage, light source has not fault carry out in good time detection and control, increased the function of control circuit undoubtedly again.And the increase of protection part can reduce the appearance of various faults.
Description of drawings
Fig. 1 is traditional emergency light circuit square frame principle schematic diagram.
Fig. 2 is traditional emergency light circuit principle schematic.
Fig. 3 is one of emergency light control circuit square frame principle schematic diagram of the present invention.
Fig. 4 is two of an emergency light control circuit square frame principle schematic diagram of the present invention.
Fig. 5 is a control circuit principle schematic of the present invention.
Embodiment
See also Fig. 3 and in conjunction with shown in Figure 4, emergency light control circuit of the present invention comprises power unit, control section, inversion part, power unit provides DC power supply to control section, the output of power unit is connected to control section, control section partly carries out the inversion control that direct current becomes interchange to inversion, the output of control section is connected to the inversion part, described control section also comprises current control unit, output control unit, current control unit is controlled the output current size of control section, and output control unit is controlled the output state of control section.
This control circuit further comprises the test section, and the test section comprises open circuit, short-circuit detecting unit, charging and discharging detecting unit, and described open circuit short-circuit detecting unit detects external battery open circuit or short-circuit condition and detected signal is sent into control section; Described charging and discharging detecting unit detects external connection battery charge or discharge state, and detected signal is sent into control section.
Described test section further comprises line under-voltage detecting unit, light source failure detecting unit, and described line under-voltage detecting unit detects the under-voltage signal of external circuit and detected under-voltage signal is sent into control section; Described light source failure detecting unit detects the external light source fault-signal and detected signal is sent into control section.
This control circuit further comprises error protection part and indicator light part, and the error protection part is sent fault-signal into control section when breaking down; Indicator light partly receives the operating state index signal of control section output.
In order to be illustrated more clearly in each part mentioned above of the present invention, please describe in conjunction with shown in Figure 5 one concrete circuit again:
Power unit
Be made up of source of stable pressure and reference circuit, the voltage adaptation scope is direct current 6V-36V.Behind the defeated people's circuit of above-mentioned voltage, become 5V for the work of power supply road by the accurate stabilized voltage power supply voltage stabilizing of inside, and produce the reference voltage of 2.5V reference voltage as operational amplifier.
Control section
Control section is made up of current control unit, output control unit and remote control, telemetric circuit.
1, current control unit
F5 is an operational amplifier, and 8R3,8R3 are the anode divider resistance, and negative terminal external impressed current senser is used for measuring and the control maximum charging current.When charging current increased for a certain reason, the negative terminal input voltage can rise; When surpassing 8R2, during the 8R3 partial pressure value, operational amplifier overturns, and 8BG1 ends, the output high level, and control circuit starts to control.
The charging current of battery can be measured and control to this current control unit usefulness current viewing resistor easily as the input control element of operational amplifier.In setting range, according to the relation of voltage and electric current, the ammeter of can going here and there can be converted into current value by the magnitude of voltage of surveying on the current viewing resistor.As the voltage that records between the current viewing resistor is 250mV, and then being converted into charging current is 250mA.
2, output control unit
During operate as normal, the 7BG1 base stage is a low level, 9BG1 base stage input high level, and 9BG2 ends, 9BG3 conducting, output low level.When producing fault, 9BG1 base stage input low level, the 9BG2 conducting, 9BG3 ends, and the output high level is protected external circuit.
This output control unit can be judged the operating state of emergency light, reaches the Optimal Control state by the computing of circuit internal logic.
3, remote control, remote unit
After the 5BGO base stage is received wired or wireless remote control coding latch signal, advance people's line under-voltage circuit by 5BG1, the control emergency light enters emergency rating.
After emergency light produced fault, the 5BG3 base stage had high level, and 5BG4 ends, and the output high level signal sends telemetered signal by wired or wireless coding.
Remote control, remote unit can be accepted the function that remote signal enters emergency rating, can select for use for various environment occasion, can carry out interlock with fire-fighting system, reach automatic operating.
The test section
Form by battery open circuit detecting unit, battery short circuit detecting unit, battery charge detecting unit, battery discharge detecting unit, line under-voltage detecting unit, light source failure detecting unit.
1, battery open circuit detecting unit:
Resistance 1R1 is connected on power input and battery-end respectively, and the voltage between power input and the battery-end is under normal conditions greater than 5V.When battery inserts, a voltage difference is arranged between 1R1; When battery was opened a way, the pressure reduction between the 1R1 was less, triode 1BG1 conducting, and the 1BG2 conducting, the 1D1 output voltage signal quits work charging circuit to charging control circuit.
This battery open circuit detecting unit can both detect the open-circuit condition of battery for the series battery of different voltages when battery is opened a way, and is shown by indicator light.Its great advantage is the open-circuit condition that can be demonstrated different magnitudes of voltage by a kind of circuit form.
2, battery short circuit detecting unit
Diode 2D1 connects the battery detecting end, and 2R3,2R4 and 2R1,2R2 are the positive and negative end divider resistance of amplifier F1.Under the normal condition, negative terminal voltage is higher than positive terminal voltage, amplifier F1 output LOW voltage, not conducting of 1D3.Charging control circuit is not controlled by 1D3.When battery short circuit, the 2D1 negative terminal becomes OV because of battery short circuit, and amplifier F1 negative terminal voltage is lower than positive terminal voltage.Amplifier F1 output HIGH voltage, control charge circuit are closed and are stopped charging.The simultaneous faults indicator light is bright.
The battery short circuit testing circuit is for the series battery of different voltages, and when battery short circuit, no matter original charging current has muchly, can both close automatically.The may command short circuit current plays a protective role below 50mA during short circuit.
3, battery charge detecting unit
The positive termination battery of amplifier F2 sample circuit, amplifier F1 output termination charging circuit.3R1,3R2 form amplifier F2 negative terminal divider resistance, and 3R5,3R6 form amplifier F3 anode divider resistance, and anode is lower than negative terminal during charging, amplifier F2 output low level.When charging was full of soon, amplifier F2 output level raise gradually, when amplifier F3 negative terminal level is higher than anode, and amplifier F3 output low level, output high level after triode 9BG1 is anti-phase, the control charging circuit stops charging.
The battery charge detecting unit can accurately be controlled charging voltage between 2.4V～24V, and by the magnitude of voltage that the programming of charging voltage programming resistors is determined, precision can reach 50mV.In order to adapt to different ambient temperatures, the precise dose compensating circuit is contained in circuit inside, and Changing Pattern is consistent with the temperature characterisitic of battery.
4, battery discharge detecting unit
Triode 4BG1 collector electrode connects inverter control circuit by diode 4D2, and when battery discharge began, the 4BG1 base voltage was higher than 0.7V, the 4BG1 conducting, and diode 4D2 cathode voltage descends because of the 4BG1 conducting.External triode conducting, when battery discharge was lower than set point, 4BG1 ended, and external triode ends, and the inversion part is not worked, and stops discharge.
The battery discharge detecting unit can detect when battery discharge, can close automatically when reaching low-voltage to stop discharge, can set easily and close voltage by the programming of discharge voltage programming resistors, and control precision can reach 100mV, high conformity.
5, line under-voltage detecting unit
5R2,5R3 are amplifier F4 anode divider resistance.During operate as normal, 5BG1 base stage input high level, the voltage of amplifier F4 anode is higher than negative terminal, and amplifier F4 exports high level: the 5BG2 conducting, output low level, under-voltage circuit is not worked, and external relay adhesive is in normal operating conditions.When line under-voltage, the 5BG1 output low level, 5BG2 ends, the output high level.External relay discharges, and emergency light enters emergency rating.
The line under-voltage detecting unit can when supply voltage hinders the magnitude of voltage of certain setting that drops between 187V～132V for some reason, change over to emergent according to the requirement of GB17945-2000 GB automatically.The line under-voltage testing circuit can be controlled in the return difference scope of the 3V～10V that sets under-voltage value, accomplishes under-voltage controlling value scalable, return difference scope scalable.
6, light source failure detecting unit
When the external circuit light source produces fault, 6BG1 base stage input high level, 6D2 exports high level, and indicator light is lighted.
The light source failure detecting unit can the light source of direct current supply load or Alternating Current Power Supply load be detected, and other circuit can't reach this requirement by the apolegamy of peripheral circuit.
The protection part
When detecting battery open circuit, short circuit, power supply overcurrent, line under-voltage, protective circuit work is by diode output high level.Conducting when the 7BG1 input high level, the charge closing circuit, the triode of external circuit control simultaneously ends, and plays a protective role.
The indicator light part
Comprise triode 0BG1-0BG6 and resistance R 1-R6, this part can show emergency light work, charged state, and can show battery open circuit, short circuit, overcurrent, light source failure and under-voltage emergency rating.Can adapt to different operating voltages, need not external current-limiting resistance, thereby circuit is succinct, easy to use.
In Fig. 5, also need to prove:
1.V
CCBe the circuit power input, through source of stable pressure output 5V and 2.5V direct voltage.
2.IN1 connect the battery detecting end, 1D1 output high level when battery is opened a way, yellow indicator lamp is bright, and 1D2 output high level yellow indicator lamp is bright when battery short circuit, closes output by 1D3 to protective circuit simultaneously.
3.IN2 connect the charging test side, amplifier F3 output high level during charging, when charging is sufficient, amplifier F3 output low level, output control terminal output high level charge closing control circuit.
4, IN3 connects the discharge examination end, and supply voltage descends when discharge, enters the 4BG1 base stage by divider resistance, and OUT1 when level is lower than 0.7V is because 4BG1 by rising to high level, closes battery discharge.
5.IN4 be the light source failure signal input part, input low level 6BG1 is by 6BG1 conducting when light source failure occurring during operate as normal, output high level yellow indicator lamp is bright.
6.OUT2 be the telemetric circuit output, export high level receive the various fault-signals that come by 1D1,1D2,5D2,6D2 as 5BG3 after.
7.IN5 be under-voltage signal input part, 5BG1 base stage input low level 5BG2 lights by 4D1 output low level emergency light by output high level indication under-voltage condition when generation is under-voltage.
8.IN6 be the remote signal input of remote control circuit, the high level signal that acceptance is latched, the control emergency light enters emergency rating.
9.IN7 be the current signal input of current control unit, be used for controlling maximum charging current.
10.OUT3 triode work when being the external PNP large power triode of the output output low level of output control circuit.Triode ends during the output high level.
11.OUT4 external green indicating lamp, when VCC had electric circuit working, green light was bright.
The external yellow indicator lamp of OUT5, when the battery open circuit, short circuit, amber light is bright when overcurrent light source failure and line under-voltage.
The external red led of OUT6,3R7 output high level indicator light is bright when charging, and charging finishes, and indicator light goes out.
By above-mentioned explanation as can be known, emergency light control circuit of the present invention has been an emergency control circuit able to programme in fact, can be applied to the management and the control of emergency light, can detect charging normal and state such as battery open circuit, short circuit, overcurrent, overdischarge of battery, to can meet an urgent need conversion and faulty indication such as line under-voltage, light source failure, applicable to measuring at a distance and control.The special integrated chip that this control circuit can be made into makes so that match with peripheral circuit that the emergency light control circuit joins, joins as transformer and the Lights section of AC power, inversion part, finally emergency light is controlled accurately.
Claims (4)
1, a kind of emergency light control circuit, this control circuit comprises power unit, control section, inversion part, power unit provides DC power supply to control section, the output of power unit is connected to control section, control section partly carries out the inversion control that direct current becomes interchange to inversion, the output of control section is connected to the inversion part, it is characterized in that: described control section also comprises current control unit, output control unit, current control unit is controlled the output current size of control section, and output control unit is controlled the output state of control section.
2, emergency light control circuit as claimed in claim 1, it is characterized in that: this control circuit further comprises the test section, the test section comprises open circuit, short-circuit detecting unit, charging and discharging detecting unit, and described open circuit short-circuit detecting unit detects external battery open circuit or short-circuit condition and detected signal is sent into control section; Described charging and discharging detecting unit detects external connection battery charge or discharge state, and detected signal is sent into control section.
3, emergency light control circuit as claimed in claim 2, it is characterized in that: described test section further comprises line under-voltage detecting unit, light source failure detecting unit, and described line under-voltage detecting unit detects the under-voltage signal of external circuit and detected under-voltage signal is sent into control section; Described light source failure detecting unit detects the external light source fault-signal and detected signal is sent into control section.
4, emergency light control circuit as claimed in claim 1 is characterized in that: this control circuit further comprises error protection part and indicator light part, and the error protection part is sent fault-signal into control section when breaking down; Indicator light partly receives the operating state index signal of control section output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310109490 CN1630453A (en) | 2003-12-17 | 2003-12-17 | Emergency light control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310109490 CN1630453A (en) | 2003-12-17 | 2003-12-17 | Emergency light control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1630453A true CN1630453A (en) | 2005-06-22 |
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ID=34843070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310109490 Pending CN1630453A (en) | 2003-12-17 | 2003-12-17 | Emergency light control circuit |
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|---|---|
| CN (1) | CN1630453A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103036450A (en) * | 2012-12-03 | 2013-04-10 | 王大鹏 | Access control system power supply |
| GB2500797B (en) * | 2012-03-19 | 2016-10-05 | Tridonic Uk Ltd | Lamp unit power supply system |
| CN110278637A (en) * | 2019-07-10 | 2019-09-24 | 重庆市威诺华光电科技有限公司 | Emergency light controls integrated circuit |
-
2003
- 2003-12-17 CN CN 200310109490 patent/CN1630453A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2500797B (en) * | 2012-03-19 | 2016-10-05 | Tridonic Uk Ltd | Lamp unit power supply system |
| CN103036450A (en) * | 2012-12-03 | 2013-04-10 | 王大鹏 | Access control system power supply |
| CN103036450B (en) * | 2012-12-03 | 2016-01-20 | 王大鹏 | Gate control system power supply |
| CN110278637A (en) * | 2019-07-10 | 2019-09-24 | 重庆市威诺华光电科技有限公司 | Emergency light controls integrated circuit |
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