CN104092204A - Overcurrent protection intelligent switch for forest fire prevention and overcurrent protection method thereof - Google Patents
Overcurrent protection intelligent switch for forest fire prevention and overcurrent protection method thereof Download PDFInfo
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- CN104092204A CN104092204A CN201410307433.1A CN201410307433A CN104092204A CN 104092204 A CN104092204 A CN 104092204A CN 201410307433 A CN201410307433 A CN 201410307433A CN 104092204 A CN104092204 A CN 104092204A
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Abstract
The invention provides an overcurrent protection intelligent switch for forest fire prevention. The switch comprises a relay, an electromagnetic induction coil, an optical coupling circuit, a voltage dependent resistor, a single chip microcomputer minimum system and a storage battery. A null line and a live line enter the system through the relay and are sleeved with the electromagnetic induction coil, the electromagnetic induction coil is connected with the optical coupling circuit, the optical coupling circuit is connected with the single chip microcomputer minimum system through a wire, the other end of the single chip microcomputer minimum system is connected with the relay, the storage battery is in charge of supplying power to the single chip microcomputer minimum system on the power failure condition, the null line and the live line coming out of the electromagnetic induction coil are connected with a load, the grounded voltage dependent resistor is connected between the electromagnetic induction coil and the load, and circuit modules are electrically connected. The overcurrent protection intelligent switch is simple in structure, convenient to use, good in stability, capable of finding lightning stroke phenomena in time and high in accuracy, so that load equipment is protected against damage caused by lightning stroke, the maintenance cost is reduced, and equipment safety is improved.
Description
Technical field:
The present invention relates to forest fire protection overcurrent protection technical field, particularly overcurrent protection intelligent switch and overcurrent protection method thereof for a kind of forest fire protection.
Background technology:
Thunder and lightning is a kind of natural phenomena, thundercloud is that the globule falling rubs mutually, generation static dissociates anion and forms electronegative cloud to the globule surface suspending, thunder discharge comprises that thundercloud is to the earth, the electric discharge of thundercloud to thundercloud and thundercloud inside, thunder discharge divides three phases: pilot discharge, main discharge, twilight sunset electric discharge, wherein, main discharge phase, discharge channel flows through the electric current of amplitude hundreds of kilo-ampere, it is the Main Stage that causes Lightning Disaster, when it hits communication equipment and steel tower, during transmission of electricity (communication) circuit, form very direct lightning strike overvoltage or the lightning induced voltage of high potential, cause the infringement to communication and the network equipment, interrupt or affect network service.Forest fire protection image monitoring equipment is loaded on mountain top more, yet mountain top is the again thunder and lightning area of mostly occurring, for the work that ensures that Forest Fire Prevention System device security is stable, is carried out effective anti-overvoltage design to whole system and is absolutely necessary.
In prior art, for lightning protection, the lightning measure of direct lightning strike, adopt the mode of lightning rod more.Although lightning rod is for high-lager building, trees etc. have good lightning protection, lightning-arrest effect.But, to high mountain on communications tower or fire prevention lookout tower, the monitoring whistle etc. arranges lightning protection, lightning-arrest poor effect.Be specially: communications tower or fire prevention lookout tower, monitoring is provided with microelectronic device on the whistle, the satellite pot in communications tower for example, fire prevention The Cloud Terrace on fire prevention lookout tower is accurate microelectronic device, is subject to thunderbolt very easily with bad, and, lightning rod is when direct lightning strike inductance is excessive, led off slowly, caused the damage of microelectronic device, caused heavy losses.
For solving the problems of the technologies described above, applicant has applied for a kind of overcurrent protection intelligent switch and overcurrent protection method thereof for forest fire protection at this.This technology has great importance for the fireproof monitoring equipment that conserves forests.Traditional forest fire protection is all by take lightning arrester that piezo-resistance is main components, thunderbolt voltage to be led off among the earth with over-pressure safety device; but because thunderbolt voltage may lie prostrate up to hundreds of thousands; electric current reaches tens kilo-amperes; lightning arrester can not be led its electric current off completely, and its overbottom pressure also can cause the infringement of forest fire protection monitoring equipment.So, on the ratio mountain top, field more frequently of being struck by lightning, moment in thunderbolt disconnects power switch, thereby realize forest fire protection monitoring equipment in the moment of thunder and lightning attack and the link isolation of powering, and at thunder and lightning, automatically recover its power supply link later and normally work and become a kind of urgent demand to guarantee equipment.
For realizing the better protection of forest fire protection monitoring equipment, have and propose by thering is the lightning protection of certain blocking-up, when thunderbolt, by burning this equipment, realize power-off; Have and propose to use active isolation device, before predictable thunder and lightning arrives, by communication measure, directly disconnect the connection of power supply link and forest fire protection monitoring equipment, make equipment temporarily in power-off or UPS power supply state, even if power so the powerful electromagnetic induction thunder of link appendix, can not cause nucleus equipment to suffer powerful rush of current, avoid device damage yet; But above method all can not meet the requirement of the round-the-clock monitoring of forest fire protection monitoring equipment forest, can not better meet the requirement in forest fire protection field.Therefore; a kind of simple in structure in the urgent need to occurring; easy to use; good stability; can find in time thunder-strike phenomenon; and accuracy rate is high, thereby protection load equipment can be avoided the infringement of the phenomenons such as thunderbolt to load equipment, thereby reaches the method for the object of protection equipment, reduction maintenance cost, raising device security.
Summary of the invention:
The object of the invention is to overcome the shortcoming existing in prior art; provide a kind of simple in structure; easy to use; good stability; can find in time thunder-strike phenomenon; and accuracy rate is high, thereby protection load equipment can be avoided the infringement of thunder-strike phenomenon to load equipment, thereby reaches the object of protection equipment, reduction maintenance cost, raising device security.
To achieve these goals; the invention provides a kind of forest fire protection overcurrent protection intelligent switch; comprise relay; electromagnetic induction coil, photoelectric coupled circuit, piezo-resistance; single-chip minimum system and storage battery; wherein, described relay is connected with zero line, live wire, can realize the switching function of this system by its connection.
Between described relay and zero line, live wire, screw is fixedly connected with, described electromagnetic induction coil connects zero line, the live wire picking out from relay, and whether this electromagnetic induction coil will exist induced current to realize having or not the detection of leaky by monitoring on zero line and live wire.
Described piezo-resistance is connected on the zero line or live wire between electromagnetic induction coil and responsible equipment, when have over the electric current of rated voltage by time, piezo-resistance can breakdown conducting, by ground connection dividing potential drop, realizes the protection to load equipment below.
Whether described photoelectric coupled circuit is connected with electromagnetic induction coil by being electrically connected to, by photoelectric coupled circuit, will in electromagnetic induction coil, exist this state transfer of induced current to single-chip minimum system.
In the electromagnetic induction coil that described single-chip minimum system can transmit by reception photoelectric coupled circuit, whether exist induced current to come control relay to realize closure and the disconnection of electric current, thus protection load equipment; Described storage battery is connected by the diode of two reverse parallel connections and the power line of single-chip minimum system, when externally fed, if battery electric quantity deficiency is charged, otherwise does not charge; When outside power-off, battery is responsible for power supply and is normally worked to ensure it to single-chip minimum system.
Overcurrent protection method, comprises the steps:
If A is without thunderbolt or leaky, native system is normally worked, and circuit normal power supply is to load equipment; If there is thunderbolt or leaky, the voltage between zero line and live wire can change, and on electromagnetic induction coil, can produce induced current.
B, when voltage surpasses rated voltage, piezo-resistance can puncture conducting by the earth earial drainage, reduces current strength with protection load equipment; Now on electromagnetic induction coil, also can produce induced current.
The electric current that C, electromagnetic induction coil produce notifies single-chip minimum system to have thunderbolt or leaky by photoelectric coupled circuit, thereby single-chip minimum system will send order, disconnects relay protection load equipment.
After D, power-off, by storage battery, to single-chip minimum system, powered, to ensure it, normally work, single-chip minimum system will send order closing relay and again detect whether have thunderbolt or leaky after official hour, if do not exist, system continues to work on power, if exist, after power-off, after official hour, continue cycle detection and whether have thunderbolt or leaky.
Described overcurrent protection intelligent switch and overcurrent protection method thereof are in the application in forest fire protection field.
The present invention is simple in structure, easy to use, good stability; can find in time thunder-strike phenomenon; and accuracy rate is high, thereby protection load equipment can be avoided the infringement of the phenomenons such as thunderbolt to load equipment, thereby reaches the object of protection equipment, reduction maintenance cost, raising device security.Be specially:
The invention solves in the moment of thunderbolt and disconnect power switch, thereby realize moment and the isolation of power supply link that forest fire protection monitoring equipment attacks at thunder and lightning, and automatically recover later its power supply link to guarantee normally the work problem of this urgent demand of equipment at thunder and lightning, 1, can be accurate monitor and be struck by lightning and lead its electric current off, 2, after can be at the appointed time after giving device powers down, whether Closing Switch check still has strong voltage again, so as thunderbolt afterwards in time power supply to the device forest fire protection monitoring equipment is normally worked.
Overvoltage protection principle
1. the moment of thunderbolt, the voltage instantaneous on live wire increases, and when surpassing rated voltage, the breakdown conducting of piezo-resistance meeting, leads heavy current off by ground connection, so that protection load equipment.
2. the voltage on the live wire is led off to fall a part of time, although due to the zero line in electromagnetic induction coil and the electric current opposite direction on live wire, but in different size, its magnetic flux can not cancelled out each other, thereby generation induced electromotive force, because electromagnetic induction coil and photoelectric coupled circuit are connected to form loop, thereby form induced current.
3. photoelectric coupled circuit is worked in induced current, gives single-chip minimum system transmitted signal, informs that it has high-tension current, and single-chip minimum system sends order control relay and disconnects, and realizes the isolation of forest fire protection monitoring equipment and power supply link.
4. after power-off, single-chip minimum system is by storage battery power supply, and single-chip minimum system meeting control relay after official hour is closed, and whether monitoring exists strong voltage again, to realize in time normal work in time of load equipment.
5. storage battery is in parallel with the power supply circuits of single-chip minimum system by the contrary parallel diode of both direction, and in the situation that having externally fed, if the electricity of storage battery is full of, storage battery does not charge, if the electricity of storage battery is discontented, to charge in batteries; In the situation that there is no externally fed, by storage battery, single-chip minimum system is powered to ensure that this system normally moves.
Figure of description
Fig. 1 is formation schematic diagram of the present invention.
Embodiment
Forest fire protection overcurrent protection intelligent switch, as shown in Figure 1, Fig. 1 is formation schematic diagram of the present invention.Comprise relay, electromagnetic induction coil, photoelectric coupled circuit, piezo-resistance, single-chip minimum system and storage battery, wherein, described relay is connected with zero line, live wire, can realize the switching function of this system by its connection.Between relay and zero line, live wire, screw is fixedly connected with, and described electromagnetic induction coil connects zero line, the live wire picking out from relay, and whether this electromagnetic induction coil will exist induced current realization to having or not the detection of leaky by monitoring zero line and live wire.Piezo-resistance is connected on the zero line or live wire between electromagnetic induction coil and responsible equipment, when have over the electric current of rated voltage by time, piezo-resistance can breakdown conducting, by ground connection dividing potential drop, realizes the protection to load equipment below.Whether photoelectric coupled circuit is connected with electromagnetic induction coil by being electrically connected to, by photoelectric coupled circuit, will in electromagnetic induction coil, exist this state transfer of induced current to single-chip minimum system.In the electromagnetic induction coil that single-chip minimum system can transmit by reception photoelectric coupled circuit, whether exist induced current to come control relay to realize closure and the disconnection of electric current, thus protection load equipment; Described storage battery is connected by the diode of two reverse parallel connections and the power line of single-chip minimum system, when externally fed, if battery electric quantity deficiency is charged, otherwise does not charge; When outside power-off, battery is responsible for power supply and is normally worked to ensure it to single-chip minimum system.
Overcurrent protection method, comprises the steps:
If A is without thunderbolt or leaky, native system is normally worked, and circuit normal power supply is to load equipment; If there is thunderbolt or leaky, the voltage between zero line and live wire can change, and on electromagnetic induction coil, can produce induced current.
B, when voltage surpasses rated voltage, piezo-resistance can puncture conducting by the earth earial drainage, reduces current strength with protection load equipment; Now on electromagnetic induction coil, also can produce induced current.
The electric current that C, electromagnetic induction coil produce notifies single-chip minimum system to have thunderbolt or leaky by photoelectric coupled circuit, thereby single-chip minimum system will send order, disconnects relay protection load equipment.
After D, power-off, by storage battery, to single-chip minimum system, powered, to ensure it, normally work, single-chip minimum system will send order closing relay and again detect whether have thunderbolt or leaky after official hour, if do not exist, system continues to work on power, if exist, after power-off, after official hour, continue cycle detection and whether have thunderbolt or leaky.
Described overcurrent protection intelligent switch and overcurrent protection method thereof are in the application in forest fire protection field.
The present invention is simple in structure, easy to use, good stability; can find in time thunder-strike phenomenon; and accuracy rate is high, thereby protection load equipment can be avoided the infringement of the phenomenons such as thunderbolt to load equipment, thereby reaches the object of protection equipment, reduction maintenance cost, raising device security.The invention solves in the moment of thunderbolt and disconnect power switch, thereby realize moment and the isolation of power supply link that forest fire protection monitoring equipment attacks at thunder and lightning, and automatically recover later its power supply link to guarantee normally the work problem of this urgent demand of equipment at thunder and lightning, 1, can be accurate monitor and be struck by lightning and lead its electric current off, 2, after can be at the appointed time after giving device powers down, whether Closing Switch check still has strong voltage again, so as thunderbolt afterwards in time power supply to the device forest fire protection monitoring equipment is normally worked.
Overvoltage protection principle
1. the moment of thunderbolt, the voltage instantaneous on live wire increases, and when surpassing rated voltage, the breakdown conducting of piezo-resistance meeting, leads heavy current off by ground connection, so that protection load equipment.
2. the voltage on the live wire is led off to fall a part of time, although due to the zero line in electromagnetic induction coil and the electric current opposite direction on live wire, but in different size, its magnetic flux can not cancelled out each other, thereby generation induced electromotive force, because electromagnetic induction coil and photoelectric coupled circuit are connected to form loop, thereby form induced current.
3. photoelectric coupled circuit is worked in induced current, gives single-chip minimum system transmitted signal, informs that it has high-tension current, and single-chip minimum system sends order control relay and disconnects, and realizes the isolation of forest fire protection monitoring equipment and power supply link.
4. after power-off, single-chip minimum system is by storage battery power supply, and single-chip minimum system meeting control relay after official hour is closed, and whether monitoring exists strong voltage again, to realize in time normal work in time of load equipment.
5. storage battery is in parallel with the power supply circuits of single-chip minimum system by the contrary parallel diode of both direction, and in the situation that having externally fed, if the electricity of storage battery is full of, storage battery does not charge, if the electricity of storage battery is discontented, to charge in batteries; In the situation that there is no externally fed, by storage battery, single-chip minimum system is powered to ensure that this system normally moves.
Effect comparison, selects 300 microelectronic devices, and every 100 is one group, prevents the multiple district of same thunder and lightning, and A group is connected with the present invention, B group is connected with lightning rod, and C group is connected with active isolation device, and comparative effectiveness is as follows
| Group ratio | A | B | C |
| The present invention | Loss percentage 1% | ? | ? |
| Lightning rod | ? | Loss percentage 26% | ? |
| Active isolation device | ? | ? | Loss percentage 12% |
Claims (5)
1. a forest fire protection overcurrent protection intelligent switch, comprises relay, electromagnetic induction coil, photoelectric coupled circuit, piezo-resistance, single-chip minimum system and storage battery, it is characterized in that, described relay is connected with zero line, live wire, can realize the switching function of this system by its connection;
Between described relay and zero line, live wire, screw is fixedly connected with, described electromagnetic induction coil connects zero line, the live wire picking out from relay, and whether this electromagnetic induction coil will exist induced current to realize having or not the detection of leaky by monitoring on zero line and live wire;
Described piezo-resistance is connected on the zero line or live wire between electromagnetic induction coil and responsible equipment, when have over the electric current of rated voltage by time, piezo-resistance can breakdown conducting, by ground connection dividing potential drop, realizes the protection to load equipment below.
2. forest fire protection overcurrent protection intelligent switch according to claim 1; it is characterized in that; whether described photoelectric coupled circuit is connected with electromagnetic induction coil by being electrically connected to, by photoelectric coupled circuit, will in electromagnetic induction coil, exist this state transfer of induced current to single-chip minimum system.
3. forest fire protection overcurrent protection intelligent switch according to claim 1, it is characterized in that, in the electromagnetic induction coil that described single-chip minimum system can transmit by reception photoelectric coupled circuit, whether exist induced current to come control relay to realize closure and the disconnection of electric current, thus protection load equipment; Described storage battery is connected by the diode of two reverse parallel connections and the power line of single-chip minimum system, when externally fed, if battery electric quantity deficiency is charged, otherwise does not charge; When outside power-off, battery is responsible for power supply and is normally worked to ensure it to single-chip minimum system.
4. as described in as arbitrary in claim 1-3, an overcurrent protection method for overcurrent protection intelligent switch for dark woods fire prevention, is characterized in that, comprises the steps:
If A is without thunder-strike phenomenon, native system is normally worked, and circuit normal power supply is to load equipment; If there is thunder-strike phenomenon, the voltage between zero line and live wire can change, and on electromagnetic induction coil, can produce induced current.
B, when voltage surpasses rated voltage, piezo-resistance can puncture conducting by the earth earial drainage, reduces current strength with protection load equipment; Now on electromagnetic induction coil, also can produce induced current.
The electric current that C, electromagnetic induction coil produce notifies single-chip minimum system to have thunderbolt or leaky by photoelectric coupled circuit, thereby single-chip minimum system will send order, disconnects relay protection load equipment.
After D, power-off, by storage battery, to single-chip minimum system, powered, to ensure it, normally work, single-chip minimum system will send order closing relay and again detect whether have thunderbolt or leaky after official hour, if do not exist, system continues to work on power, if exist, after power-off, after official hour, continue cycle detection and whether have thunderbolt or leaky.
One kind as arbitrary in claim 1-4 as described in overcurrent protection intelligent switch and overcurrent protection method thereof in the application in forest fire protection field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410307433.1A CN104092204A (en) | 2014-06-26 | 2014-06-26 | Overcurrent protection intelligent switch for forest fire prevention and overcurrent protection method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410307433.1A CN104092204A (en) | 2014-06-26 | 2014-06-26 | Overcurrent protection intelligent switch for forest fire prevention and overcurrent protection method thereof |
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| CN104092204A true CN104092204A (en) | 2014-10-08 |
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| CN201410307433.1A Pending CN104092204A (en) | 2014-06-26 | 2014-06-26 | Overcurrent protection intelligent switch for forest fire prevention and overcurrent protection method thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2409694Y (en) * | 1999-12-27 | 2000-12-06 | 邢海英 | Protector for electric leakage electric shock, overcurrent and overvoltage |
| CN2412302Y (en) * | 1997-12-31 | 2000-12-27 | 何清海 | Multifunctional protector for electrical appliances |
| CN2453568Y (en) * | 2000-11-21 | 2001-10-10 | 胡本玉 | Electric power supply plug for preventing it from being leakage, over-voltage, over-load, short circuit and lightninhg-stroke |
| CN1581632A (en) * | 2003-08-04 | 2005-02-16 | 深圳市力可兴电池有限公司 | Secondary cell charging-discharging automatic cut-off device |
| CN102447271A (en) * | 2010-09-30 | 2012-05-09 | 比亚迪股份有限公司 | Power supply unit and power supply method thereof |
| CN103311882A (en) * | 2012-03-13 | 2013-09-18 | 深圳远征技术有限公司 | Lightning protection system |
| CN203632274U (en) * | 2013-10-24 | 2014-06-04 | 陕西恒发电子科技有限公司 | Panel computer charger having lightning protection function |
-
2014
- 2014-06-26 CN CN201410307433.1A patent/CN104092204A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2412302Y (en) * | 1997-12-31 | 2000-12-27 | 何清海 | Multifunctional protector for electrical appliances |
| CN2409694Y (en) * | 1999-12-27 | 2000-12-06 | 邢海英 | Protector for electric leakage electric shock, overcurrent and overvoltage |
| CN2453568Y (en) * | 2000-11-21 | 2001-10-10 | 胡本玉 | Electric power supply plug for preventing it from being leakage, over-voltage, over-load, short circuit and lightninhg-stroke |
| CN1581632A (en) * | 2003-08-04 | 2005-02-16 | 深圳市力可兴电池有限公司 | Secondary cell charging-discharging automatic cut-off device |
| CN102447271A (en) * | 2010-09-30 | 2012-05-09 | 比亚迪股份有限公司 | Power supply unit and power supply method thereof |
| CN103311882A (en) * | 2012-03-13 | 2013-09-18 | 深圳远征技术有限公司 | Lightning protection system |
| CN203632274U (en) * | 2013-10-24 | 2014-06-04 | 陕西恒发电子科技有限公司 | Panel computer charger having lightning protection function |
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