CN2648676Y - Power supply for fire alarming control system - Google Patents
Power supply for fire alarming control system Download PDFInfo
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- CN2648676Y CN2648676Y CN 03270363 CN03270363U CN2648676Y CN 2648676 Y CN2648676 Y CN 2648676Y CN 03270363 CN03270363 CN 03270363 CN 03270363 U CN03270363 U CN 03270363U CN 2648676 Y CN2648676 Y CN 2648676Y
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- power supply
- circuit
- resistance
- input
- battery backup
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Abstract
The utility model discloses a power supply for fire alarming control systems, which comprises a standby battery pack, a charging circuit, a power supply switching circuit, a boosted circuit, an input power supply signal acquisition circuit and a standby power supply signal acquisition circuit, wherein the standby battery pack is connected with the charging circuit and the boosted circuit through a control switch; the output end of the boosted circuit is connected with a filter circuit and the charging circuit. The voltage of the standby battery pack is output after being boosted by the boosted circuit; when the voltage of the standby battery pack is lower than a set value, the standby battery pack can cease to output the voltage. The utility model can make the fire alarming control system work safely and reliably, and protect the standby battery pack from damage.
Description
Technical field
The utility model relates to a kind of DC power supply, particularly relates to the power supply that uses in a kind of fire alarm control system.
Background technology
At present, the power supply that uses in the domestic fire alarm control system can satisfy galvanic current output requirement, has the fail safe of management function, battery compatibility, weatherability and the withstand voltage insulation of battery set charge/discharge.And satisfy the function signal of GB16806-1997 standard code.But this power supply not only price is more expensive, but also has following shortcoming:
(1) when using battery backup, output voltage descends along with the decline of battery voltage, has influenced the operate as normal of fire alarm system, can cause wrong report, misoperation even the paralysis of whole system.
(2) when battery voltage dropped to a certain degree, battery pack was not protected, and continued discharge, up to discharge off.So easy damage battery pack, the useful life of shortening battery pack.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of power supply that is used for fire alarm control system, and its output voltage can not descend along with the decline of battery voltage, effectively protects battery pack not to be damaged, and low price.
For solving the problems of the technologies described above, the power supply that the utility model is used for fire alarm control system comprises battery backup, charging circuit, power supply switch circuit, booster circuit, input power supply signal Acquisition Circuit and stand-by power supply signal acquisition circuit; Described battery backup is connected with charging circuit, booster circuit by control switch; The control input end of described input power supply signal Acquisition Circuit is connected with outside input power supply, after this outside is imported power source voltage and the level of input power supply signal Acquisition Circuit reference input is compared, forms input power supply acquired signal at output; The control input end of described stand-by power supply signal acquisition circuit is connected with battery backup by control switch, and the voltage of this battery backup is compared the back in output formation stand-by power supply acquired signal with the level of stand-by power supply signal acquisition circuit reference input; The output of described booster circuit is connected with filter circuit and charging circuit; The input of this charging circuit is connected with the external charging power supply, when outside input power supply that input power supply acquired signal detects normal, and when the battery backup voltage that the stand-by power supply acquired signal detects was not less than first set point, charging circuit charged to battery backup; Described power supply switch circuit is made up of the double switch circuit, wherein the input of a path switching circuit is connected with outside input power supply, its output is connected with first relay, the input of another path switching circuit is connected with switched input signal, its output is connected with second relay, when power cut-off is imported in the outside that input power supply acquired signal detects, when the battery backup that the stand-by power supply acquired signal detects is working properly, first relay disconnects, second relay is connected under the control of switched input signal simultaneously, battery backup voltage boosts through booster circuit, and outwards output after filter circuit filtering; When the battery backup voltage of stand-by power supply acquired signal detection was lower than second set point, control switch disconnected, and battery backup stops outside power supply.
Because being used for the power supply of fire alarm control system, the utility model adopted booster circuit, so output voltage can not descend with the decline of battery voltage, the required voltage of fire alarm control system operate as normal, electric current can stably be provided, guarantee the operate as normal of this system.
Stand-by power supply signal acquisition circuit of the present utility model can send signal control switch is disconnected when battery backup voltage is lower than the second set point 19V, cut off battery backup, stops voltage output.Prevent that battery pack from damaging because of over-discharge can, prolong the useful life of battery pack.
The power supply cost that the utility model is used for fire alarm control system is lower, and its price only is 40% of an existing same capability power supply price.
Description of drawings
Accompanying drawing is the power circuit diagram that the utility model is used for fire alarm control system.
Embodiment
The power supply that the utility model is used for fire alarm control system is mainly finished the function of following aspect.1, civilian or industrial+30V power supply commonly used on the market is exported after Filtering Processing, supplied with external equipment and use.2, for guaranteeing the external equipment operate as normal, produce two groups of acquired signal, promptly import power supply acquired signal, stand-by power supply acquired signal.3, when the input power supply power-fail, can guarantee constantly electricity work of external equipment automatically with the battery backup incision.4, for preventing battery backup when work, output voltage can descend along with the decline of battery backup voltage, adopts booster circuit, supplies with the needed stable output voltage of external equipment work.
For this reason, the utility model power supply of being used for fire alarm control system comprises that each is with battery pack, power supply switch circuit, charging circuit, booster circuit, input power supply signal Acquisition Circuit and stand-by power supply signal acquisition circuit.
Describedly be connected with charging circuit, booster circuit by control switch K2 with battery pack B.
The control input end of described input power supply signal Acquisition Circuit is connected with outside input power supply L+, the voltage of this outside input power supply L+ is with after the level of input power supply signal Acquisition Circuit reference input is compared, and forms at output and imports power supply acquired signal POWER.The control input end of described stand-by power supply signal acquisition circuit is connected with battery backup B by control switch K2, and the voltage of this battery backup B is compared the back at output formation stand-by power supply acquired signal BUF with the level of stand-by power supply signal acquisition circuit reference input.
The output of described booster circuit is connected with filter circuit and charging circuit.The input of this charging circuit is connected with external charging power supply PWM, the outside input power supply L+ that detects when input power supply acquired signal is normal, and when the battery backup B voltage of stand-by power supply acquired signal collection was not less than first set point, charging circuit charged to battery backup B.
Described power supply switch circuit is made up of the double switch circuit, wherein the input of a path switching circuit is connected with outside input power supply L+, its output is connected with the first relay J A, the input of another path switching circuit is connected with switched input signal Q6, its output is connected with the second relay J B, the outside input power supply L+ that gathers when input power supply acquired signal is undesired, when the battery backup B that the stand-by power supply acquired signal is gathered is working properly, the first relay J A disconnects, the second relay J B connects under the control of switched input signal Q6 simultaneously, battery backup B voltage boosts through booster circuit, and outwards output after filter circuit filtering.
When the battery backup B voltage of stand-by power supply acquired signal detection was lower than the second set point 19V, control switch K2 disconnected, and battery backup B stops outside power supply.
Below in conjunction with the utility model-embodiment shown in the drawings, the utility model is further described.As shown in drawings, as embodiment of the present utility model, battery backup B is connected with charging circuit, booster circuit by control switch K2.
Described input power supply signal Acquisition Circuit comprises a comparator 8 with positive input 5 and reverse input end 6 and output 7.This comparator 8 by common mode with boost through booster circuit after battery backup B output voltage 24V1 power supply be connected with the system ground wire.This circuit comprises that also one is made up of diode D2, resistance R 5, is serially connected in the control input end between outside input power supply L+ and the ground wire, and the contact of diode D2 and resistance R 5 links to each other with the reverse input end 6 of comparator 8.By the reference input that resistance R 1, voltage stabilizing didoe D1 form, be serially connected between 24V1 and the ground wire, the contact of resistance R 1 and voltage stabilizing didoe D1 links to each other with the positive input 5 of comparator 8.Between the output 7 of comparator 8 and 24V1, also be connected with resistance R 3.When outside input power supply L+ was 30V, the input power supply acquired signal POWER that comparator 8 outputs 7 form was 0V, and L+ is normal for the outside input of expression power supply; When input power supply acquired signal POWER was 30V, the outside input of expression power supply L+ disconnected, and breaks down.
Described stand-by power supply signal acquisition circuit comprises a comparator 4 with positive input 3 and reverse input end 2 and output 1.This comparator 4 by common mode with boost through booster circuit after the output voltage 24V1 power supply of battery backup B be connected with the system ground wire.This circuit comprises that also one is made up of resistance R 11, resistance R 12, is serially connected in each with the control input end between battery pack B and the ground wire by control switch K2, and the contact of resistance R 11 and resistance R 12 links to each other with the reverse input end 2 of comparator 4.By the reference input that resistance R 13, voltage stabilizing didoe D7 form, be serially connected between 24V1 and the ground wire, the contact of resistance R 13 and voltage stabilizing didoe D7 links to each other with the positive input 3 of comparator 4.Between the output 1 of comparator 4 and 24V1, also be connected with resistance R 14.When the power supply of battery backup B was higher than 20V, the stand-by power supply acquired signal BUF that the output 1 of comparator 4 forms was 0V, and B is working properly for the expression battery backup; When the voltage of battery backup B was lower than set point 19V, BUF was 30V, and expression battery backup B work is undesired.
Described charging circuit is by resistance R 1, R6, R2, R18, R21, capacitor C 1, C2, C3, and triode VI, V2, V3 form, and constitute the pulse constant current charging circuit.Be applicable to common maintenance-free lead-acid battery.This circuit can not charge automatically to battery backup B, only all normal at input power supply acquired signal POWER and stand-by power supply acquired signal BUF, and the voltage of battery backup B is when being not less than 20V, just to be connected triode V3 base stage by resistance R 18, external charging power supply pwm signal is modulated, and realizes the charging to battery backup B.
Described booster circuit adopts the LM2577adj integrated circuit to realize.Be connected inductance L 3 between 4 pin of this integrated circuit (IC) 1 and 5 pin, 3 pin connect ground wire, be connected with capacitor C 5, C10 between 5 pin and 3 pin, series resistor R16, capacitor C 11 between 1 pin and 3 pin, be connected in series diode D10, resistance R 24, R25 between 4 pin and 3 pin, the anode of diode D10 is connected with 4 pin, and resistance R 24 is connected with 2 pin with the contact of R25.Resistance R 26 be connected in the two ends of resistance R 24 after R27 connects in parallel with R25, resistance R 26 is connected with the contact of R25 with resistance R 24 with the contact of R27.5 pin of this circuit are connected with battery backup B by the contact of the second relay J B and contact and the control switch K2 of the first relay J A with the contact of inductance L 3.
In the present embodiment, booster circuit is made up of two groups of structures, the identical circuit of parameter, and these two groups of circuit also connect.Wherein the negative electrode of the diode D9 of one group of booster circuit (IC1) is connected with inductance L I, forms output voltage 24V1.The resistance utmost point of the diode D10 of another group booster circuit (being realized by LM2577adj integrated circuit (IC) 2) is connected with the filter circuit of being made up of inductance L 2, capacitor C 6, C14, C15, C16, resistance R 29, forms output voltage 24V2.
Described power supply switch circuit is made up of the double switch circuit.Wherein a path switching circuit is made up of resistance R 10, diode D5, voltage stabilizing didoe D4, triode V4, the first relay J A.Voltage stabilizing didoe D4 is connected in series with resistance R 10, the base stage of the other end of resistance R 10 and triode V4 is joined, the coil of the collector electrode of triode V4 and the first relay J A joins, and the other end of this coil joins with the negative electrode of voltage stabilizing didoe D4 and afterwards is connected with outside input power supply L+ by control switch K1.At the two ends of described coil and be connected to diode D5, the negative electrode of the negative electrode of diode D5 and voltage stabilizing didoe D4 joins.Emitter and the ground wire of triode V4 join.
Another path switching circuit is made up of capacitor C 4, resistance R 8, R9, triode V5, the second relay J B, diode D8.Resistance R 8, R9 are connected in series between switched input signal Q6 and the ground wire, and the contact of resistance R 8, R9 is connected with the base stage of triode V5.Capacitor C 4 is attempted by between Q6 and the ground wire.The coil of the collector electrode of triode V5 and relay J B joins, and the other end of this coil is connected with battery backup B by control switch K2.Diode D8 is attempted by the two ends of this coil, and the anode of this diode D8 is connected with the collector electrode of triode V5.The emitter of triode V5 is connected with ground wire.
In practical work process, external control devices is by detecting input power supply acquired signal POWER and stand-by power supply acquired signal BUF, obtain outside input power work (outage), after battery backup is working properly, can make switched input signal Q6 produce a high level,, make the second relay vessel JB get electric connection by R9, R8, V5, and the first relay J A is disconnected, battery backup B transfers operating state to by charged state.Through booster circuit the voltage of battery backup B being risen to 30V outwards exports.
Outside input power supply L+ is after control switch K1 and filter capacitor filtering, and directly output is used for external equipment.
Claims (5)
1. power supply that is used for fire alarm control system, comprise battery backup, charging circuit, it is characterized in that: it also comprises power supply switch circuit, booster circuit, input power supply signal Acquisition Circuit and stand-by power supply signal acquisition circuit; Described battery backup is connected with charging circuit, booster circuit by control switch; The control input end of described input power supply signal Acquisition Circuit is connected with outside input power supply, after this outside is imported power source voltage and the level of input power supply signal Acquisition Circuit reference input is compared, forms input power supply acquired signal at output; The control input end of described stand-by power supply signal acquisition circuit is connected with battery backup by control switch, and the voltage of this battery backup is compared the back in output formation stand-by power supply acquired signal with the level of stand-by power supply signal acquisition circuit reference input; The output of described booster circuit is connected with filter circuit and charging circuit; The input of this charging circuit is connected with the external charging power supply, when outside input power supply that input power supply acquired signal detects normal, and when the battery backup voltage that the stand-by power supply acquired signal detects was not less than first set point, charging circuit charged to battery backup; Described power supply switch circuit is made up of the double switch circuit, wherein the input of a path switching circuit is connected with outside input power supply, its output is connected with first relay, the input of another path switching circuit is connected with switched input signal, its output is connected with second relay, when the outside input power supply that input power supply acquired signal detects undesired, when the battery backup that the stand-by power supply acquired signal detects is working properly, first relay disconnects, second relay is connected under the control of switched input signal simultaneously, battery backup voltage boosts through booster circuit, and outwards output after filter circuit filtering; When the battery backup voltage of stand-by power supply acquired signal detection was lower than second set point, control switch disconnected, and battery backup stops outside power supply.
2. the power supply that is used for fire alarm control system as claimed in claim 1 is characterized in that: described booster circuit adopts the LM2577adj integrated circuit to realize; Be connected inductance L 3 between 4 pin of this integrated circuit (IC) 1 and 5 pin, 3 pin connect ground wire, be connected with capacitor C 5, C10 between 5 pin and 3 pin, series resistor R16, capacitor C 11 between 1 pin and 3 pin, be connected in series diode D10, resistance R 24, R25 between 4 pin and 3 pin, the anode of diode D10 is connected with 4 pin, and resistance R 24 is connected with 2 pin with the contact of R25; Resistance R 26 be connected in the two ends of resistance R 24 after R27 connects in parallel with R25, resistance R 26 is connected with the contact of R25 with resistance R 24 with the contact of R27; 5 pin of this circuit are connected with control switch by the contact of the second relay J B and the contact of the first relay J A with the contact of inductance L 3.
3. the power supply that is used for fire alarm control system as claimed in claim 1 or 2 is characterized in that: described input power supply signal Acquisition Circuit comprises a comparator 8 with positive input 5 and reverse input end 6 and output 7; This comparator 8 is connected with the system ground wire by the battery backup B output voltage 24V1 power supply of common Wan Shiyu after booster circuit boosts; This outlet comprises that also one is made up of diode D2, resistance R 5, is serially connected in the control input end between outside input power supply L+ and the ground wire, and the contact of diode D2 and resistance R 5 links to each other with the reverse input end 6 of comparator 8; By the reference input that resistance R 1, voltage stabilizing didoe D1 form, be serially connected between 24V1 and the ground wire, the contact of resistance R 1 and voltage stabilizing didoe D1 links to each other with the positive input 5 of comparator 8; Between the output 7 of comparator 8 and 24V1, also be connected with resistance R 3; Described stand-by power supply signal acquisition circuit comprises a comparator 4 with positive input 3 and reverse input end 2 and output 1; This comparator 4 by common mode with boost through booster circuit after the output voltage 24V1 power supply of battery backup B be connected with the system ground wire; This circuit and comprise that also one is made up of resistance R 11, resistance R 12 is serially connected in control input end between battery backup B and the ground wire by control switch K2, and the contact of resistance R 11 and resistance R 12 links to each other with the reverse input end 2 of comparator 4; By the reference input that resistance R 13, voltage stabilizing didoe D7 form, be serially connected between 24V1 and the ground wire, the contact of resistance R 13 and voltage stabilizing didoe D7 links to each other with the positive input 3 of comparator 4; Between the output 1 of comparator 4 and 24V1, also be connected with resistance R 14.
4. the power supply that is used for fire alarm control system as claimed in claim 3 is characterized in that: described power supply switch circuit is made up of the double switch circuit; Wherein a path switching circuit is made up of resistance R 10, diode D5, voltage stabilizing didoe D4, triode V4, the first relay J A; Voltage stabilizing didoe D4 is connected in series with resistance R 10, the base stage of the other end of resistance R 10 and triode V1 is joined, the coil of the collector electrode of triode V1 and the first relay J A joins, and the other end of this coil joins with the negative electrode of voltage stabilizing didoe D4 and afterwards is connected with outside input power supply L+ by control switch K1; At the two ends of described coil and be connected to diode D5, the negative electrode of the negative electrode of diode D5 and voltage stabilizing didoe D4 joins; Emitter and the ground wire of triode V4 join; Another path switching circuit is made up of capacitor C 4, resistance R 8, R9, triode V5, the second relay J B, diode D8; Resistance R 8, R9 are connected in series between switched input signal Q6 and the ground wire, and the contact of resistance R 8, R9 is connected with the base stage of triode V5.Capacitor C 4 is attempted by between Q6 and the ground wire; The coil of the collector electrode of triode V5 and relay J B joins, and the other end of this coil is connected with battery backup B by control switch K2; Diode D8 is attempted by the two ends of this coil, and the anode of this diode D8 is connected with the collector electrode of triode V5; The emitter of triode V5 is connected with ground wire.
5. the power supply that is used for fire alarm control system as claimed in claim 2 is characterized in that: described booster circuit is made up of two groups of structures, the identical circuit of parameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03270363 CN2648676Y (en) | 2003-09-25 | 2003-09-25 | Power supply for fire alarming control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03270363 CN2648676Y (en) | 2003-09-25 | 2003-09-25 | Power supply for fire alarming control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2648676Y true CN2648676Y (en) | 2004-10-13 |
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ID=34330463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03270363 Expired - Fee Related CN2648676Y (en) | 2003-09-25 | 2003-09-25 | Power supply for fire alarming control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2648676Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1953383B (en) * | 2005-10-18 | 2010-10-27 | 西门子公司 | Power supply and useful data exchange between a fire alarm control unit and a current sink |
| CN101183801B (en) * | 2007-12-07 | 2011-03-16 | 杭州华三通信技术有限公司 | Power-off protection method, system and device |
-
2003
- 2003-09-25 CN CN 03270363 patent/CN2648676Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1953383B (en) * | 2005-10-18 | 2010-10-27 | 西门子公司 | Power supply and useful data exchange between a fire alarm control unit and a current sink |
| CN101183801B (en) * | 2007-12-07 | 2011-03-16 | 杭州华三通信技术有限公司 | Power-off protection method, system and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041013 Termination date: 20110925 |