CN201319206Y - Earth-leakage fire alarm protective system - Google Patents
Earth-leakage fire alarm protective system Download PDFInfo
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- CN201319206Y CN201319206Y CNU200820229312XU CN200820229312U CN201319206Y CN 201319206 Y CN201319206 Y CN 201319206Y CN U200820229312X U CNU200820229312X U CN U200820229312XU CN 200820229312 U CN200820229312 U CN 200820229312U CN 201319206 Y CN201319206 Y CN 201319206Y
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Abstract
The utility model relates to the alarming and sensing field, in particular to the electric earth-leakage alarming and sensing field and the protecting and controlling field thereof. The earth-leakage fire alarm protective system comprises a microprocessor module and a wire breakage sensing module, an overcurrent sensing module, a short circuit sensing module, a memory module, a push-button module, a display module, a microcomputer communication interface, a power supply module and an isolation control circuit which are electrically connected with the microprocessor module, wherein the wire breakage sensing module is connected with a carrying-placing device and an optical coupler after a voltage transformer is connected with a filter circuit. The overcurrent sensing module and the current transformer are connected with the carrying-placing device and the optical coupler after connecting with the filter circuit. The short circuit sensing module is a circuit formed by a comparator and an optical coupler. The earth-leakage fire alarm protective system is reasonable and reliable to control circuit, which can be communicated with and manage a microcomputer, and has sensitive sensing and detecting.
Description
Technical field
The utility model relates to the warning sensory field, especially relates to the warning sensing and the protection control field thereof of electric electric leakage.
Background technology
The generation of electrical fire; most because of supply line's excess current; short circuit; people's carelessness causes when restoring electricity again after broken string and the power failure; add up according to interrelated data; electrical fire accounts for more than 30% of fire generation; and traditional electrical fire protective device; defencive function is more single; can not discern indication to the various fault types of electrical fire and report to the police, and stored record, long-time power failure caused; brought the inconvenience of live and work; according to national correlation method regulation, when fire takes place, should be able to cut off the general supply of respective storey; avoid because of by electric wiring with fire spread, protect the safety of fire fighter simultaneously in when fire extinguishing.
The utility model content
Based on above-mentioned situation, the utility model provides a kind of alarm and protection system of electronics to address the above problem.
The utility model adopts multiple Acquisition Circuit and trigger circuit, and first, voltage transformer (VT) gathers supply line and whether have the disconnection fault signal; The second, current transformer is gathered excess current and short trouble signal; Three, receive the fire alarm system command signal by the photoelectric coupled circuit collection, receive control by 51 single-chip microcomputers.With the single-chip microcomputer is core control part, the various signals that collect, by single-chip microcomputer internal processes logic analysis failure judgement type, report to the police by LCD demonstration fault type, alert acoustic-electric road, when receiving the signal instruction of fire alarm system, output AC220V voltage drives breaker device dropout master switch power supply, the single-chip processor i/o mouth, is sent in the PC software systems various fault-signals by bus mode.
Concrete technical scheme of the present utility model is:
Electric leakage fire alarm protection system of the present utility model, the broken string sensing module, overcurrent sensing module, short circuit sensing module, memory module, key-press module, display module, microcomputer communication interface, power module and the isolation control circuit that comprise microprocessor module and electrically connect with it.
Further, described broken string sensing module is to connect transport and placing device and optocoupler after voltage transformer (VT) connects filtering circuit.
Further, described overcurrent sensing module current transformer connects transport and placing device and optocoupler after connecting filtering circuit.
Further, described short circuit sensing module is the circuit that comparer and optocoupler are formed.
Further, described microprocessor module is the control circuit system that peripheral cells such as single-chip microcomputer and watchdog chip, crystal oscillator constitute.
Further, described memory module is the serial EEPROM chip.
Further, described power module is that bridge rectifier circuit and power supply chip are formed.
Further, described power supply chip is 7805 and 7812.
Further, described isolation control circuit is connected in described microprocessor module, via being connected to breaker device behind the relay.
After the utility model adopted technique scheme, it was rationally reliable to have a control circuit, and can manage the advantage of sensing detection sensitivity with microcomputer communication.
Description of drawings
Fig. 1 is a circuit module connection layout of the present utility model;
Fig. 2 is the circuit theory diagrams of the utility model most preferred embodiment.
Embodiment
Existing accompanying drawings and embodiment further specify the utility model.
As shown in Figure 1; electric leakage fire alarm protection system of the present utility model, the broken string sensing module, overcurrent sensing module, short circuit sensing module, memory module, key-press module, display module, microcomputer communication interface, power module and the isolation control circuit that comprise microprocessor module and electrically connect with it.
As shown in Figure 2, the specific embodiment of broken string sensing module of the present utility model is when voltage transformer (VT) primary coil B1 has AC220V voltage, secondary output AC2.2V, voltage transformer (VT) B1 was by linear output in 100: 1, through diode D1 rectification, capacitor C 1, capacitor C 2 filtering, by resistance R 1, resistance R 2 current limliting dividing potential drops are added to the 3rd pin of comparison/transport and placing device U5,2 pin, 1 pin is formed one voltage comparator, when the 3rd pin voltage of comparison/transport and placing device U5 during greater than the 2nd pin voltage, comparison/transport and placing device U5 internal comparator is overturn, 1 pin uprises level by low level, directly be added to 1 pin of optocoupler U6,1 pin output high level by comparison/transport and placing device U5, make optocoupler U8 conducting, optocoupler U8 the 3rd pin becomes low level by original high level, be added to the 13rd pin of single-chip microcomputer U1, when single-chip microcomputer U1 detects I/O mouth the 13rd pin and is low level, judge the line fault.Through the analysis of single-chip microcomputer U1 internal logic routine data, single-chip microcomputer U1 is instantaneous with time-divisions three tunnel output, and the first via makes triode T5 conducting by single-chip microcomputer U1 the 20th pin output high level through resistance R 28, promotes relay J 2 adhesives, makes power cutoff mechanism thread off and moves.
Secondary route single-chip microcomputer U1 the 17th pin output audio signal through capacitor C 11 couplings, is input to the 3rd pin of audio frequency amplifier U12, after audio frequency amplifies, promotes loudspeaker Y by the output of the 5th pin through capacitor C 12 and sends chimes of doom.Press K switch 1, the low level trigger pip that 35 pin of single-chip microcomputer U1 are received, the output of single-chip microcomputer U1 the 17th pin absence of audio signal, alert sound stops.
Third Road is added to 3 pin, 4 pin, 5 pin, 6 pin of display driver chip U2 respectively by single-chip microcomputer U1 the 36th pin, 26 pin, 25 pin, the output of 24 pin serial datas, the display alarm word content makes LED3 shinny by single-chip microcomputer U1 the 39th pin output high level through resistance R 18 simultaneously.
Excess current sensing module of the present utility model is when live wire passes current transformer L1, and phase line has electric current to pass through, and the ac voltage signal that the phase line current is responded to according to the current transformer L1 of load electric power is along with size of current changes and changes.During excess current, refer generally to In1.05 times above rated current, so when electric current passes through current transformer L1, L1 level of current transformer can produce voltage signal, resistance R 7 is to capacitor C 7 chargings, by diode D2 rectification, by by capacitor C 6, capacitor C 8, capacitor C 9, the П type filter integral circuit that resistance R 9 is formed, resistance by transformation resistance R11 can change the time of discharging and recharging, be input to the 6th pin of comparison/transport and placing device U5, by resistance R 10, resistance R 12 is formed the 5th pin that setting voltage value is added to comparison/transport and placing device U5, comparison/transport and placing device U5 the 5th pin, 6 pin, 7 pin are formed a voltage comparator, when the 6th pin voltage of comparison/transport and placing device U5 during greater than the 5th pin voltage, comparison/transport and placing device U5 internal comparator is overturn, the 7th pin uprises level by low level, directly be added to the 1st pin of optocoupler U7,7 pin output high level by comparison/transport and placing device U5, make optocoupler U7 conducting, the 3rd pin becomes low level by original high level, be added to the 1st pin of comparison/transport and placing device U5, count through comparison/transport and placing device U5 internal delay time device, comparison/transport and placing device U5 is with time-divisions three tunnel output, the first via is through delaying time 3600 seconds the time, make triode T5 conducting by comparison/transport and placing device U5 the 20th pin output high level through resistance R 28, promote relay J 2 adhesives, make power cutoff mechanism thread off and move.
The second the tunnel without delaying time by single-chip microcomputer U1 the 17th pin output audio signal, through capacitor C 11 couplings, is input to the 3rd pin of audio frequency amplifier U12, after audio frequency amplifies, promotes loudspeaker Y by the output of the 5th pin through capacitor C 12 and send chimes of doom.Press K switch 1, the low level trigger pip that 35 pin of single-chip microcomputer U1 are received, the output of single-chip microcomputer U1 the 17th pin absence of audio signal, alert sound stops.
Third Road is added to 3 pin, 4 pin, 5 pin, 6 pin of display driver chip U2 respectively by single-chip microcomputer U1 the 36th pin, 26 pin, 25 pin, the output of 24 pin serial datas, the display alarm word content makes LED1 shinny by single-chip microcomputer U1 the 39th pin output high level through resistance R 16 simultaneously.
Short circuit sensing module of the present utility model is the 5th a pin voltage signal from comparison/transport and placing device U5, other adds one tunnel comparison/transport and placing device U5 the 8th pin, 9 pin, 10 pin are formed a threshold higher voltage comparer, when the 9th pin voltage of comparison/transport and placing device U5 during greater than the 10th pin voltage, comparison/transport and placing device U5 internal comparator is overturn, the 8th pin uprises level by low level, directly be added to 1 pin of optocoupler U8,8 pin output high level by comparison/transport and placing device U5, make optocoupler U8 conducting, optocoupler U8 the 3rd pin becomes low level by original high level, be added to the 2nd pin of single-chip microcomputer U1, analyze through single-chip microcomputer U1 internal logic routine data, single-chip microcomputer U1 is instantaneous with time-divisions three tunnel output, and the first via makes triode T5 conducting by single-chip microcomputer U1 the 20th pin output high level through resistance R 28, promote relay J 2 adhesives, make power cutoff mechanism thread off and move.
Secondary route single-chip microcomputer U1 the 17th pin output audio signal through capacitor C 11 couplings, is input to the 3rd pin of note amplifier U12, after audio frequency amplifies, promotes loudspeaker Y by the output of the 5th pin through capacitor C 12 and sends chimes of doom.The K1 that pushes button, the low level trigger pip that 35 pin of single-chip microcomputer U1 are received, the output of single-chip microcomputer U1 the 17th pin absence of audio signal, alert sound stops.
Third Road is added to the 3rd pin, 4 pin, 5 pin, 6 pin of display driver chip U2 respectively by single-chip microcomputer U1 the 36th pin, 26 pin, 25 pin, the output of 24 pin serial datas, the display alarm word content makes LED2 shinny by single-chip microcomputer U1 the 39th pin output high level through R17 simultaneously.
It is when grid power blackout that secondary of the present utility model send electric protection; when restoring electricity again; when single-chip microcomputer U1 obtains operating voltage again; single-chip microcomputer U1 the 21st pin is output as low level; when pushing button K2, single-chip microcomputer U1 the 21st pin is output as high-low level, makes triode T6 conducting through resistance R 29; promote relay J 1 adhesive, drive the power cutoff mechanism adhesive.
Fire alarm system interlock control circuit of the present utility model is when fire alarm system has the output of DC24V voltage signal, be added to 1 pin of optocoupler U9 through resistance R 20, make optocoupler U9 conducting, be input to 3 pin of single-chip microcomputer U1, become low level by original high level, when single-chip microcomputer U1 detects the I/O mouth and is low level, when the continuous detecting 0.5s of single-chip microcomputer U1 inside, single-chip microcomputer U1 is with time-divisions three tunnel output, the first via makes triode T5 conducting by single-chip microcomputer U1 the 20th pin output high level through resistance R 28, promote relay J 2 adhesives, make power cutoff mechanism thread off and move.
Secondary route single-chip microcomputer U1 the 17th pin output audio signal through capacitor C 11 couplings, is input to the 3rd pin of audio frequency amplifier U12, after audio frequency amplifies, promotes loudspeaker Y by the output of the 5th pin through capacitor C 12 and sends chimes of doom.The K1 that pushes button, the low level trigger pip that single-chip microcomputer U1 the 35th pin is received, the output of single-chip microcomputer U1 the 17th pin absence of audio signal, alert sound stops.
Third Road is added to 3 pin, 4 pin, 5 pin, 6 pin of display driver chip U2 respectively by single-chip microcomputer U1 the 36th pin, 26 pin, 25 pin, the output of 24 pin serial datas, the display alarm word content makes LED4 shinny by single-chip microcomputer U1 the 39th pin output high level through resistance R 19 simultaneously.
Rs 232 level conversion of the present utility model realize that circuit for remotely controlling is by resistance R 26, optocoupler U11, triode T2, resistance R 25, resistance R 24, triode T1 and resistance R 21, optocoupler U10, resistance R 22, resistance R 23, the high-low level change-over circuit that triode T2 forms, when the 4th pin of single-chip microcomputer U1 is exported high level, make triode T2 conducting through resistance R 27 current limlitings, optocoupler U11 output low level, the 4th pin of both circuit and single-chip microcomputer U1,5 pin form the closed loop current driving circuit, logical MI232 special IC carries out level conversion, be added to PC by com port, special-purpose configuration software is installed, can lead to Long-distance Control to two groups of high-low level change-over circuits and the inner I/O mouth of single-chip microcomputer U1, realize operations such as " remote regulating; remote measurement; remote control; distant news ", and can write down the warning current state by software, print fault form etc.
Memory circuit of the present utility model is that U4 is a storer, the store alarms data, and storer U4 the 6th pin, 30 pin transmit reading of data by the 6th pin, 30 pin of parallel data and single-chip microcomputer U1.Watchdog circuit by the 1st pin, 2 pin, 4 pin, 5 pin of the 7th pin, 8 pin, 27 pin, 28 pin and the U3 of single-chip microcomputer U1 are formed recovers single-chip microcomputer U1 internal data, avoids occurring the endless loop state.
Power circuit of the present utility model is to have the two-way independent current source to supply with, and guarantees the trigger circuit reliably working.Bridge rectifier circuit by diode D3-D7 forms through capacitor C 13, capacitor C 14 filtering, is input to the 1st pin of power supply chip U13, through inner voltage stabilizing, by the DC voltage of the 3rd pin output 12V,, provide+direct-current working volts of 12V to this device through capacitor C 15, capacitor C 16 high and low frequency filtering.
Bridge rectifier circuit by diode D8-D11 forms through capacitor C 17, capacitor C 18 filtering, is input to the 1st pin of power supply chip U14, through inner voltage stabilizing, by the DC voltage of the 3rd pin output 5V,, provide+direct-current working volts of 5V to this device through capacitor C 19, capacitor C 20 high and low frequency filtering.
Although specifically show and introduced the utility model in conjunction with preferred embodiment; but the those skilled in the art should be understood that; in the spirit and scope of the present utility model that do not break away from appended claims and limited; can make various variations to the utility model in the form and details, be protection domain of the present utility model.
Claims (9)
1, electric leakage fire alarm protection system is characterized in that: the broken string sensing module, overcurrent sensing module, short circuit sensing module, memory module, key-press module, display module, microcomputer communication interface, power module and the isolation control circuit that comprise microprocessor module and electrically connect with it.
2, electric leakage fire alarm protection system as claimed in claim 1 is characterized in that: described broken string sensing module is to connect transport and placing device and optocoupler after voltage transformer (VT) connects filtering circuit.
3, electric leakage fire alarm protection system as claimed in claim 1 is characterized in that: described overcurrent sensing module current transformer connects transport and placing device and optocoupler after connecting filtering circuit.
4, electric leakage fire alarm protection system as claimed in claim 1 is characterized in that: described short circuit sensing module is the circuit that comparer and optocoupler are formed.
5, electric leakage fire alarm protection system as claimed in claim 1 is characterized in that: described microprocessor module is the control circuit system that peripheral cells such as single-chip microcomputer and watchdog chip, crystal oscillator constitute.
6, electric leakage fire alarm protection system as claimed in claim 1, it is characterized in that: described memory module is the serial EEPROM chip.
7, electric leakage fire alarm protection system as claimed in claim 1 is characterized in that: described power module is that bridge rectifier circuit and power supply chip are formed.
8, electric leakage fire alarm protection system as claimed in claim 7, it is characterized in that: described power supply chip is 7805 and 7812.
9, as claim 1 or 5 described electric leakage fire alarm protection systems, it is characterized in that: described isolation control circuit is connected in described microprocessor module, via being connected to breaker device behind the relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820229312XU CN201319206Y (en) | 2008-12-03 | 2008-12-03 | Earth-leakage fire alarm protective system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820229312XU CN201319206Y (en) | 2008-12-03 | 2008-12-03 | Earth-leakage fire alarm protective system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201319206Y true CN201319206Y (en) | 2009-09-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820229312XU Expired - Fee Related CN201319206Y (en) | 2008-12-03 | 2008-12-03 | Earth-leakage fire alarm protective system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201319206Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103956019A (en) * | 2013-08-16 | 2014-07-30 | 深圳金山电池有限公司 | Early-warning and linkage emergency processing method and system for battery activation fire |
| CN106451345A (en) * | 2016-09-29 | 2017-02-22 | 广东电网有限责任公司东莞供电局 | Cross undervoltage intelligence from restoring to throne protection device |
| CN113619423A (en) * | 2021-09-22 | 2021-11-09 | 国网河南省电力公司平顶山供电公司 | Movable intelligent charging stake |
-
2008
- 2008-12-03 CN CNU200820229312XU patent/CN201319206Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103956019A (en) * | 2013-08-16 | 2014-07-30 | 深圳金山电池有限公司 | Early-warning and linkage emergency processing method and system for battery activation fire |
| CN106451345A (en) * | 2016-09-29 | 2017-02-22 | 广东电网有限责任公司东莞供电局 | Cross undervoltage intelligence from restoring to throne protection device |
| CN113619423A (en) * | 2021-09-22 | 2021-11-09 | 国网河南省电力公司平顶山供电公司 | Movable intelligent charging stake |
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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: 20090930 Termination date: 20111203 |