CN2821718Y - Anti-theft alarm device for power transformer and low voltage line - Google Patents
Anti-theft alarm device for power transformer and low voltage line Download PDFInfo
- Publication number
- CN2821718Y CN2821718Y CN 200520018512 CN200520018512U CN2821718Y CN 2821718 Y CN2821718 Y CN 2821718Y CN 200520018512 CN200520018512 CN 200520018512 CN 200520018512 U CN200520018512 U CN 200520018512U CN 2821718 Y CN2821718 Y CN 2821718Y
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Abstract
The utility model relates to an anti-theft alarm device for power transformers and low voltage lines, which comprises a master machine and a slave machine, wherein the slave machine comprises a wire breaking testing circuit of which output is connected with a triggering circuit of the slave machine; the triggering circuit of the slave machine is connected with the power input of a vibrator; a relay of the slave machine is controlled by the output of the vibrator; a normally open contact of the relay of the slave machine is connected with the power input of a transmitting circuit; the transmitting circuit is connected with an address decoding switch; a receiving circuit is arranged in the master machine; the output of the receiving circuit is connected with the triggering circuit and a decoding circuit of the master machine; a relay of the master machine is driven by the triggering circuit; a digital display circuit is driven by the decoding circuit; the power source of the decoding circuit is connected with a normally open contact of the relay of the master machine; the slave machine and the master machine are in wireless connection. The utility model realizes wireless alarm and can monitor a plurality of transformers and low voltage lines simultaneously, and simultaneously, the elements of the utility model, for example, the transmitting circuit, decoding circuit, etc., works only when an alarm is given, and accordingly, the power consumption is low and a battery of the utility model can work more than one year.
Description
Technical field
The utility model relates to a kind of burglar alarm, particularly relates to the burglar alarm of a kind of inactive transformer and low-voltage circuit.
Background technology
Along with going deep into of the electric system upgrading of rural power grids over the past two years, the rural irrigation is more and more with transformer and low-voltage circuit, these transformers and low-voltage circuit are in the discontinuity user mode mostly, in its operational phase not, the stolen phenomenon of transformer or low-voltage circuit often take place.With Dingxing County, Baoding is example, stolen irrigation in 2004 year surplus transformer 50, economic loss units up to a million.
Some burglar alarms are arranged in the market, and such as GSM burglar alarm and wired burglar alarm, the former cost height, power consumption are big, and the latter be unable to do without connection line, uses complexity and self-security low.
The utility model content
The utility model is exactly for remedying above-mentioned deficiency, provides that a kind of cost is low, radio alarming, power transformer and low-voltage circuit burglar alarm that power consumption is extremely low.
The utility model power transformer and low-voltage circuit burglar alarm, comprising main frame and slave, wireless connections between slave and the main frame, be provided with some groups of break detection circuits in the slave, its output connects the slave trigger circuit, the slave trigger circuit connect the power supply input of an oscillator, the output control slave relay of this oscillator, this slave relay normally open contact connects the power supply input of a radiating circuit, this radiating circuit is connected with the geocoding switch, receiving circuit is set in the main frame, the output of this receiving circuit connects main frame trigger circuit and decoding scheme, these main frame trigger circuit drive a main frame relay, and the power supply of described decoding scheme connects the normally opened contact of described main frame relay, and described decoding scheme drives a digital display circuit.
The utility model power transformer and low-voltage circuit burglar alarm, also be provided with the several diode display circuit in its described slave, this display circuit is made up of with the Sheffer stroke gate that is connected this transistor base the light emitting diode that is connected luminotron driving transistor collector, and the input of described Sheffer stroke gate is connected in parallel in one tunnel input of described slave trigger circuit.
The utility model power transformer and low-voltage circuit burglar alarm; its described break detection circuit has three the tunnel for every group; this has in three the tunnel leads up to a ground resistance earth; two-way connects an input end of two inputs or door by a current-limiting resistance, a reverse connecting protection diode in addition; each road in described this two-way or door input end; connect positive supply through a pull-up resistor; and establish a capacity earth; between described current-limiting resistance and described protection diode, through a protective resistance and a protection stabilivolt ground connection.
The utility model power transformer and low-voltage circuit burglar alarm, its described slave oscillator is made of two two input nand gates, its output is connected to a relay by another two input nand gates and drives transistor base, and this collector that drives triode connects the line bag of slave relay.
The utility model power transformer and low-voltage circuit burglar alarm, its described slave trigger circuit and main frame trigger circuit are made of four inputs or door, and the output of input of two in described every group of break detection circuit or door connects an input end of described slave trigger circuit four or door.
The utility model power transformer and low-voltage circuit burglar alarm also are provided with the acoustooptic alarm that is made of light emitting diode that is connected in series and hummer in its described main frame, this sequential circuit is connected between main frame relay normally open contact and the ground.
The utility model power transformer and low-voltage circuit burglar alarm, its described main frame and slave all are provided with a direct current regulation circuit of preparing and carrying with battery.
The utility model power transformer and low-voltage circuit burglar alarm have been realized radio alarming, can monitor a plurality of transformers and low-voltage circuit simultaneously, simultaneously because only work when reporting to the police such as radiating circuit wherein, decoding schemes, power consumption is very low, with battery can satisfy application more than 1 year.
Description of drawings
Fig. 1 is the schematic diagram of the utility model power transformer and low-voltage circuit burglar alarm;
Fig. 2 is the slave circuit diagram of the utility model power transformer and low-voltage circuit burglar alarm;
Fig. 3 is the host circuit figure of the utility model power transformer and low-voltage circuit burglar alarm.
Embodiment
For setting forth the utility model in more detail, be further described below in conjunction with embodiment.
Fig. 1 is a schematic diagram of the present utility model, and this utility model power transformer and low-voltage circuit burglar alarm be by main frame and slave machine, main frame can with the supporting use of several slaves, in the present embodiment, be 15 slaves of a main frame band.
Main frame is made up of receiving circuit, main frame trigger circuit, main frame relay, decoding scheme, driving circuit, display circuit and sound and light alarm.Wherein the output of receiving circuit connects the main frame trigger circuit, the output of main frame trigger circuit connects the line bag of main frame relay, the output of main frame receiving circuit also connects decoding scheme, the output of decoding scheme drives digital display circuit through driving circuit, but the power supply of decoding scheme, driving circuit and sound and light alarm all is connected on the normally opened contact of main frame relay, when obviously not receiving alerting signal, in the main frame except that receiving circuit and trigger circuit, all be in off position, this has just reduced the power consumption of main frame to greatest extent.
Concrete host circuit sketch 3.Wherein U203 is a receiving circuit, what select for use in the present embodiment is to be with the emission reception of geocoding right, receiving circuit is exported four road coded signals simultaneously, this four road coded signal connects four inputs of main frame trigger circuit or door U205A, connect decoding scheme U201 (MC14495) simultaneously, decoding scheme U201 connects the digital U200 of demonstration, and MC14495 is 16 code translators, can drive digital display tube U200 work 0,1,2,3,4,5,6,7,8,9, A, B, C, D, E, F demonstration.
The output of main frame trigger circuit U205A connects the base stage that relay drives triode Q200, and its collector connects the line bag of main frame relay J D200, and line is wrapped parallel diode D202.The normally opened contact of main frame relay connects the power input of U201, and sound and light alarm light emitting diode J200 and hummer U206.
Power input at receiving circuit connects a switch S 200, resets after reporting to the police.
U204, D200, C200 and D201 constitute the stabilized voltage supply integrated circuit of main frame, can use the external direct current power supply power supply, and can certainly use self-contained battery BT200 power supply simultaneously to battery BT200 charging (D203 is a cell charge protection) this moment.Because decoding scheme is in not powering state at ordinary times, charactron does not work yet, and only receiving circuit is in holding state in the main frame, the gate circuit electricity consumption is few, so the main frame electricity consumption is considerably less.
Slave is made up of the radiating circuit and the alarm display circuit of break detection circuit, slave trigger circuit, slave relay, oscillator, band geocoding.Physical circuit is seen Fig. 2.
In Fig. 2, U103A four inputs or door are the slave trigger circuit, and its four input ends connect four groups of break detection circuits.Each group break detection circuit is made up of three input ports; one of them is by the direct ground connection of resistance; the two-way input port respectively is connected the input end of one two input or door with a reverse connecting protection diode through a current-limiting resistance in addition, and each input end of two inputs or door all is connected to a pull-up resistor.
Concrete a road is the 6. pin of input port JPb100 is connected to U101A through R103, D106 1. pin, this pin connects and draws resistance R 122, the 5. pin of input port JPb100 is connected to the 2. pin of U101A through R109, D102, this pin connects and draws resistance R 121, and the 4. pin of JPb100 is by resistance R 110 ground connection.
Transformer of protecting or low-voltage circuit all are three-phases, and the terminal of low-voltage circuit all has electric energy meter in general, can both constitute closed circuitly exactly, and three input ports connect the three-way of three input ends of transformers or low-voltage circuit.If the terminal of potential circuit open circuit need be done closed circuit processing.
So, two closed loops of the three-way formation that is monitored are selected the value of R122 (R121), R103 (R109) and R110, make or the input end of door U101A is a low level in closed type, in case open a way then be high level, can reach the purpose of detection.
Between R103 and D106, be provided with an overvoltage crowbar of forming by resistance and voltage stabilizing diode over the ground, be exactly Rv100 and D119.This holding circuit is when preventing that in a single day input port from having electricity, and the voltage that arrives reverse connecting protection diode D106 is added the protection of protection diode D106 by clamp, guarantees not have high voltage to arrive the slave trigger circuit.
The 1. pin of the output U101A of this group break detection circuit is connected to the 2. pin of slave trigger circuit U103A.
Other three the tunnel with this road identical, JPb100 1. 2. 3. pin and R104, R111, R112, Rv102, Rv103, D121, D122, D103, D104, R119, R120, C107, C108 constitute one group of break detection circuit, be connected the 5. 6. pin of U102B; JPa100 4. 5. 6. pin and R105, R106, R107, Rv106, Rv 107, D125, D126, D105, D108, R117, R118, C105, C108 constitute one group of break detection circuit, be connected the 1. 2. pin of U102A; JPa100 1. 2. 3. pin and R108, R113, R114, Rv104, Rv 105, D123, D124, D109, D110, R115, R126, C103, C104 constitute one group of break detection circuit, be connected the 8. 9. pin of U102C.
The output of slave trigger circuit; be exactly U103A output terminal 1. pin be connected to the power supply input pin of oscillator U100; Sheffer stroke gate U100A, U100B, C100, C101, R100, R101 form oscillator by two; its output connects the base stage that the slave relay drives triode Q100 through output stage U100C; the collector of Q100 connects the line bag (D100 is the protection diode of line bag) of slave relay J D100; the fixed contact of JD100 meets positive supply VCC, and normally opened contact connects the VCC end of radiating circuit JP100.
As seen, when a certain group of break detection circuit detects circuit or transformer open circuit, its two input or door U101A output high level, trigger circuit U103A is output as height, power up the oscillator starting oscillation for oscillator U100A, U100B and oscillator output stage U100C.
The positive half-wave of the output of oscillator drives the slave relay and drives triode Q100 unlatching, engage relay JD100, and the relay adhesive, thus power up for radiating circuit JP100, radiating circuit work also externally sends wireless signal.Because radiating circuit JP100 link address code switch S100 is so comprise address coding signal in the wireless signal of sending.J100 draws socket for detecting.
Also be provided with the alarm display circuit in the slave, total identical four the tunnel.Two input nand gate U104A, triode Q101 among Fig. 2, luminotron D113, resistance R 123 form one the tunnel.Wherein connect the output of short-term testing circuit U101A after two of Sheffer stroke gate U104A input end parallel connections, the output of U104A connects the base stage of triode Q101, and the collector of Q101 connects luminotron D113, connects positive supply through current-limiting resistance R123 again.As seen when not having the broken string alarm, U104A exports high level, and luminotron is bright; In case the circuit that this road is detected open circuit, U104A becomes low level, and triode Q101 turn-offs, and luminotron D113 extinguishes.
Two input nand gate U104D, triode Q102, luminotron D115, resistance R 124 constitute second guard and report display circuit; Two input nand gate U104B, triode Q103, luminotron D116, resistance R 125 constitute Third Road; Two input nand gate U104C, triode Q104, luminotron D117, resistance R 126 constitute the four the tunnel, are connected on the different disconnection monitoring circuit output ends.
Slave also uses the power supply of the charged pool identical with main frame, is made of U105, C102, R128, D101, D111, D107, and D114, R127 are the power light circuit, and D118 is battery BT100 protection stabilivolt.Because radiating circuit, oscillatory circuit, relay all are in not powering state at ordinary times, and the gate circuit electricity consumption is few, thus also very power saving of slave, the actual use, one pair of No.5 cell can use more than 1 year.
A main frame can be monitored 15 slaves simultaneously, and a slave can detect a transformer and low-voltage circuit thereof.During concrete the use, code switch that should each slave is set to state separately, must not be identical with other slave, that is to say, and a geocoding is set for each slave.
When main frame receives the alerting signal of slave, receiving circuit is sent the coded signal of this slave, this coding, process decoder for decoding rear drive charactron demonstrates corresponding address value with the form of 1-F, the monitor staff can know that just that transformer or its low-voltage circuit are stolen like this, can reflect soon to handle to prevent larceny.
Be a kind of radio alarming, take precautions against the burglar alarm that the zone is big, with low cost, electricity consumption is economic from visible the utility model power transformer of above embodiment and low-voltage circuit burglar alarm, be fit to the vast rural area of present China and use.
Claims (7)
1, a kind of power transformer and low-voltage circuit burglar alarm, it is characterized in that comprising main frame and slave, wireless connections between slave and the main frame, be provided with some groups of break detection circuits in the slave, its output connects the slave trigger circuit, the slave trigger circuit connect the power supply input of an oscillator, the output control slave relay of this oscillator, this slave relay normally open contact connects the power supply input of a radiating circuit, this radiating circuit is connected with the geocoding switch, receiving circuit is set in the main frame, the output of this receiving circuit connects main frame trigger circuit and decoding scheme, these main frame trigger circuit drive a main frame relay, and the power supply of described decoding scheme connects the normally opened contact of described main frame relay, and described decoding scheme drives a digital display circuit.
2, power transformer according to claim 1 and low-voltage circuit burglar alarm, it is characterized in that also being provided with in the described slave several diode display circuit, this display circuit is made up of with the Sheffer stroke gate that is connected this transistor base the light emitting diode that is connected luminotron driving transistor collector, and the input of described Sheffer stroke gate is connected in parallel in one tunnel input of described slave trigger circuit.
3, power transformer according to claim 2 and low-voltage circuit burglar alarm; it is characterized in that described break detection circuit has three the tunnel for every group; this has in three the tunnel leads up to a ground resistance earth; two-way connects an input end of two inputs or door by a current-limiting resistance, a reverse connecting protection diode in addition; each road in described this two-way or door input end; connect positive supply through a pull-up resistor; and establish a capacity earth; between described current-limiting resistance and described protection diode, through a protective resistance and a protection stabilivolt ground connection.
4, power transformer according to claim 3 and low-voltage circuit burglar alarm, it is characterized in that described slave oscillator is made of two two input nand gates, its output is connected to a relay by another two input nand gates and drives transistor base, and this collector that drives triode connects the line bag of slave relay.
5, power transformer according to claim 4 and low-voltage circuit burglar alarm, it is characterized in that described slave trigger circuit and main frame trigger circuit are made of four inputs or door, the output of input of two in described every group of break detection circuit or door connects an input end of described slave trigger circuit four or door.
6, power transformer according to claim 5 and low-voltage circuit burglar alarm, it is characterized in that also being provided with the acoustooptic alarm that is made of light emitting diode that is connected in series and hummer in the described main frame, this sequential circuit is connected between main frame relay normally open contact and the ground.
7, power transformer according to claim 6 and low-voltage circuit burglar alarm is characterized in that described main frame and slave all are provided with a direct current regulation circuit of preparing and carrying with battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520018512 CN2821718Y (en) | 2005-05-12 | 2005-05-12 | Anti-theft alarm device for power transformer and low voltage line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520018512 CN2821718Y (en) | 2005-05-12 | 2005-05-12 | Anti-theft alarm device for power transformer and low voltage line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2821718Y true CN2821718Y (en) | 2006-09-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520018512 Expired - Fee Related CN2821718Y (en) | 2005-05-12 | 2005-05-12 | Anti-theft alarm device for power transformer and low voltage line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2821718Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100447823C (en) * | 2006-12-07 | 2008-12-31 | 时均泉 | Caution device of monitoring low voltage distribution line |
-
2005
- 2005-05-12 CN CN 200520018512 patent/CN2821718Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100447823C (en) * | 2006-12-07 | 2008-12-31 | 时均泉 | Caution device of monitoring low voltage distribution line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |