CN2559058Y - Wireless theftproof alarm device for transformer - Google Patents

Abstract

The utility model discloses a wireless anti-theft alarm used on a power transformer. The alarm comprises a transmitter and a receiver, wherein, the casing of the receiver is fixed on a transformer, a wireless transmitting circuit is installed in the casing, the receiver has a casing, a wireless receiving circuit, a nixietube and an acousto-optic alarm circuit is arranged in the casing, and the power source of the transmitting module in the transmitter is provided by an energy storage capacitor. When the power source of the transformer is cut off by an illegal person, the wireless alarm can instantly send alarm signals through self stored electric energy, and the receiver of an administrative authority performs acousto-optic alarm after receiving the signals. The utility model can monitor the security situation of the transformer in distant range, one receiver can receives the signals of multi transformers, and provides safety control for the transformers in remote and border areas and field large enterprises.

Description

The voltage transformer wireless burglar alarm

This novel alarm that belongs to relates in particular to the wireless anti-theft alarming device that uses on a kind of power transformer.

The large enterprise of field work at present, as oil field, mine etc., the power transformer of use generally is to be placed on open-air unattendedly, is easy to be destroyed or steal by lawless people, therefore be sought after a kind of unserviced transformer alarm, when transformer is stolen, in time report to the police.

This novel purpose is: a radio alarming device is installed on transformer, when lawless people theft transformer, must cut off power of transformer earlier, the electric energy that wireless alarm utilization itself stores behind the dump sends alerting signal immediately, and the receiver of administrative authority receives signal after amplification promotes loudspeaker and pilot lamp carries out sound and light alarm.

This novel technical scheme is: the shell that is fixed with the alarm transmitter on transformer, radio transmitter is housed in the shell, receiver has shell, wireless receiving circuit is arranged in the shell, charactron and sound light alarming circuit, it is characterized in that: the drive signal of transmitter derives from the phase line of transformer self, drive triode through photoelectrical coupler, the emitter of triode drives the relay adhesive, provide electric energy to transmitter module after the closing of contact of relay, make transmitter module outwards launch alerting signal, receiver module in the receiver is delivered to the demonstration of digital display decoding scheme promotion charactron after receiving signal, another road signal of module drives the relay adhesive through triode, and promotion loudspeaker and light are reported to the police simultaneously behind the power supply of relay contact connection oscillator.

Can transmit for after transmitter is cut off the electricity supply, the power supply of transmitter module uses accumulate electric capacity to supply with.

Basis is novel can launch alerting signal behind the dump of alarm, receiver can show certain transformer warning, guarantee is provided for the safety of transformer.

Below in conjunction with accompanying drawing and further specify novel by embodiment:

The circuit diagram of this novel transmitter of Fig. 1;

The circuit diagram of this novel receiver of Fig. 2;

The schematic appearance of this novel transmitter of Fig. 3;

The schematic appearance of this novel receiver of Fig. 4;

As shown in the figure: power lead 1; Holder 2; Emitting antenna 3; Transmitter house 4; Cover plate of outer casing 5; Gib screw 6; Attaching plug 7; Cable 8; Switch 9; Power light 10; Receiving antenna 11; Receiver cabinet 12; Charactron 13; Alarm lamp 14; The transmitter circuitry of Fig. 1 all is installed in the shell 4, Q1, Q2 are power leads 1, wherein Q1 is a phase line, Q2 is a zero line, Q1 provides power supply to circuit through resistance R 1 step-down after the rectifies, and capacitor C1 is a filter capacitor, after resistance R 2 step-downs, supply with light emitting diode LE1, be used to refer to power supply situation.Voltage is delivered to R4, relay J 1 and accumulate capacitor C 2 through diode D2.Go into photoelectrical coupler IC1 through dropping resistor R3 step-down is laggard, photoelectrical coupler IC1 is dual-in-line plastic packaging 6 pin 4N25 type integrated circuit.The light emitting diode of photoelectrical coupler inside is lighted, two pin conductings of its output stage, one of them pin is by tongue tube GK1 ground connection, the base stage of the positive-negative-positive triode T1 that another pin joins with it becomes low-voltage, triode T1 conducting, relay J 1 adhesive, the normally closed contact of relay disconnects, the transmitter module IC2 dead electricity of transmitter is not reported to the police, and IC2 is MK794W4 for the wireless transmitter module model.When the people steals transformer, must cut off the input power supply of transformer earlier, lost voltage on the dropping resistor R3 like this, light emitting diode in the photoelectrical coupler IC1 extinguishes, its output stage disconnects, because the discharge process of accumulate capacitor C 2, the base stage of triode T1 becomes high voltage, triode T1 ends, relay J 1 dead electricity.The contact resets and normally closed point is connected, the electric energy of accumulate capacitor C 2 is added on the transmitter module IC2 by the contact of relay J 1, IC2 launches the radio wave signal that has coding by emitting antenna FF, and the emitting antenna FF in the circuit is exactly the emitting antenna 3 on the transmitter house 4.Receiving antenna 11 on the receiver cabinet 12, the receiving antenna JJ in the receiving circuit just, carry out decoding processing by receiver module IC4 after receiving the signal of transmitter, the model of IC4 is T2068CK, when transmitting of receiving is consistent with the receiver module decode address, the corresponding sign indicating number of IC4 output is given digital driving circuit IC5, drive charactron LED and show corresponding digital, receiver module IC4 has the function of distinguishing multiple signals, therefore receiver can receive and distinguish the signal of many transmitters, and charactron LED is the charactron 13 on the receiver cabinet 12.The model of integrated circuit (IC) 5 is CD4511, charactron LEI) be public negative electrode.Another road output signal E output high level of IC4 is given triode T2, triode T2 conducting, relay J 2 adhesives, contacting, integrated circuit (IC) 6, integrated circuit (IC) 6 is time base circuit NE555, forms oscillator with element on every side, thereby promotes that triode T3 drives loudspeaker BY and pilot lamp LE2 reports to the police simultaneously.Pilot lamp LE2 is the alarm lamp 14 on the receiver cabinet 12.K switch is the switch 9 on the cabinet.The input power supply is after transformer ZB1 transformation, by IC3 voltage stabilizing output dc voltage after four commutation diode D5-D8 rectification, IC3 is three terminal regulator AN7812, and capacitor C 3, C4 are filter capacitors, LE3 is a power light, is power light 10 on receiver case 12.During use the holder 2 of transmitter house is fixed on the correct position of transformer and rivets, the circuit board of radiating circuit is contained in the shell 4, power lead 1 is directly received on two phase lines of transformer output, transmitter is started working, magnet Z1 is installed on the medial surface of casing cover 5, the position of magnet Z1 is corresponding with tongue tube GK1 on the circuit board, four gib screws 6 of cover plate of outer casing 5 usefulness are fixed on the shell 4, because the effect of magnet Z1 makes the contact closure circuit of open type tongue tube GK1 be in normal operating conditions, when the people attempts to open casing cover 5, magnet Z1 is along with cover plate of outer casing 5 leaves tongue tube, tongue tube GK1 reset contact disconnects, the base potential of triode T1 raises, the connection that resets of relay J 1 dead electricity contact, transmitter module promptly transmits, and is same when the people disconnects the phase line of transformer, and the output of photoelectrical coupler IC1 disconnects same emission alerting signal.Receiver case 12 is placed in the Control Room, and attaching plug 7 inserts socket, turns on the power switch 9 receivers and starts working.

This novel security situation that can the remote monitoring transformer, and receiver can receive the signal of many transformers, guarantee is provided for the safety of the open-air transformer of backcountry and large enterprise.

Claims (2)

1, a kind of voltage transformer wireless burglar alarm; It is made up of transmitter and receiver, the shell of transmitter is fixed on the transformer, radio transmitter is housed in the shell, receiver has shell, wireless receiving circuit is arranged in the shell, charactron and sound light alarming circuit, it is characterized in that: the drive signal of transmitter derives from the phase line of transformer self, drive triode through photoelectrical coupler, the emitter of triode drives the relay adhesive, provide electric energy to transmitter module after the closing of contact of relay, make transmitter module outwards launch alerting signal, receiver module in the receiver is delivered to the demonstration of digital display decoding scheme promotion charactron after receiving signal, another road signal of module drives the relay adhesive through triode, and promotion loudspeaker and light are reported to the police simultaneously behind the power supply of relay contact connection oscillator.

2, as the voltage transformer wireless burglar alarm under the claim 1; It is characterized in that: the power supply of transmitter module is supplied with by accumulate electric capacity (C2) in the transmitter.

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