CN201142109Y

CN201142109Y - Intelligent alarm device for stealing cable

Info

Publication number: CN201142109Y
Application number: CNU200720088076XU
Authority: CN
Inventors: 张铨基
Original assignee: Wuhan Iron and Steel Group Corp
Current assignee: Wuhan Iron and Steel Group Corp
Priority date: 2007-11-08
Filing date: 2007-11-08
Publication date: 2008-10-29
Anticipated expiration: 2017-11-08

Abstract

The utility model provides an intelligent alarm device for cable theft, which includes sampling circuits, a comparison circuit and an alarm executive circuit. The sampling circuits include a sampling circuit 1 and a sampling circuit 2, which are connected with four wires of the three-phase four-wire system by groups of two; the sampling circuit 1 and the sampling circuit 2 are connected with the comparison circuit; the output of the comparison circuit is connected with the alarm executive circuit; the sampling circuit 1 and the sampling circuit 2 respectively includes transformers, a rectification circuit and a current limiting resistor; the two transformers has the same secondary side voltages; the anode outputted by the sampling circuit 1 is connected with the cathode outputted by the sampling circuit 2; the cathode outputted by the sampling circuit 1 is connected with the anode outputted by the sampling circuit 2; the two connecting points are connected with the rectifier of the comparison circuit; the output end of the comparison circuit is connected with a control pole of a thyristor; and the thyristor is connected with the power supply loop of the alarm executive circuit in series. The alarm executive circuit includes a telephone alarm circuit and a sound alarm circuit.

Description

Cable is stolen and is cut intelligent alarm device

Technical field

The utility model relates to a kind of cable robber and cuts intelligent alarm device, particularly a kind of anti-theft warning device of 380V power cable.

Background technology

At present, it is more serious to steal the situation of cutting power cable, even there is the zone of monitoring video also to have the dead angle.And wide, the line length of the distribution of cable, it is very important to perform antitheft work.Existing warning device function is comparatively simple, and protection domain is limited.

The present invention has solved this problem well, when cable is cut, have the high-decibel alarm sound and dial the function of designated telephone automatically, be in hook state under the telephone set normal condition in the alarm, busy line does not mostly occur at dead of night because the robber cuts cable, and make telephonic possibility almost nil this moment, so special-purpose telephone line need not be set, use one and get final product.Existing warning device function singleness, protection domain is limited.

Summary of the invention

The purpose of this utility model is to solve the prior art problem well, design and a kind ofly can judge automatically that line outage and cable are stolen, can dial the alarm call or the mobile phone of appointment in the very first time that cable is cut, show to determine stolen place by number, and steal at the cable that stolen point sends the 115dB alarm sound and to cut intelligent alarm device.

The technical solution of the utility model: a kind of cable is stolen and is cut intelligent alarm device, comprise sample circuit, comparator circuit, the warning executive circuit, sample circuit comprises that four lines by three-phase four-wire system divide two groups of sample circuits that connect respectively 1, sample circuit 2, sample circuit 1 is connected with comparator circuit with sample circuit 2, the output of comparator circuit is connected with the warning executive circuit, sample circuit 1 and sample circuit 2 all comprise transformer, rectification circuit and current-limiting resistance, the secondary voltage of two transformers equates, the positive pole of sample circuit 1 output is connected with the negative pole of sample circuit 2 outputs, the negative pole of sample circuit 1 output is connected with the positive pole of sample circuit 2 outputs, two tie points are connected with the rectifier bridge of comparator circuit, the output terminal of comparator circuit is connected with the silicon controlled control utmost point, and controllable silicon is connected in the electric power loop of warning executive circuit.

Described cable is stolen and is cut intelligent alarm device, the warning executive circuit comprises telephone call circuit and reset circuit, the opening by telephone circuit of telephone call circuit comprises the relay coil J1 that is connected in parallel on warning executive circuit electric power loop, and the normally opened contact J1K of relay J 1 is connected among the inlet wire L of alarm call TLP base or is connected to the assignment key TLH two ends of mobile phone.

Described cable is stolen and is cut intelligent alarm device, when alarm call TLP is base, the telephone call circuit comprises the phone driving circuit, the phone driving circuit comprises the on-off circuit of being made up of timer, decimal system counting/allotter circuit and triode Q1, and triode Q1 output redials with alarm call TLP and is connected.

Described cable is stolen and is cut intelligent alarm device, and the reset circuit in the warning executive circuit comprises the normally closed contact J2K and relay J 2 coil drivers of the relay J 2 that is connected on warning executive circuit electric power loop.

Described cable is stolen and is cut intelligent alarm device, and the warning executive circuit comprises the audible alarm circuit.

The beneficial effects of the utility model: this device is by monitoring three-phase four-wire power supply circuit, reports to the police immediately when any conductor cord disconnection, and can show stolen place, so that arrest rapidly.Can use the communication of telephone line or mobile phone, dial the telephone number that prestores automatically, or open the high pitch warning horn.This device telephone call is rapid, can open high tone alerts in the area that security personnel can not arrive rapidly, and the high-decibel alarm sound can in time stop the robber to cut.

Description of drawings

Fig. 1 is a logic diagram of circuit of the present utility model.

Fig. 2 is circuit theory diagrams of the present utility model.

Fig. 3 is that telephone call adopts the base connection layout.

Fig. 4 is that telephone call adopts the mobile phone connection layout.

Embodiment

As Fig. 1: the utility model comprises sample circuit, comparator circuit, warning executive circuit, it is characterized in that: sample circuit comprises that four lines by three-phase four-wire system divide two groups of sample circuits that connect respectively 1, sample circuit 2, sample circuit 1 is connected with comparator circuit with sample circuit 2, the output of comparator circuit is connected with the warning executive circuit, and the warning executive circuit comprises audible alarm circuit and telephone call circuit.

Fig. 2 is circuit theory diagrams of the present utility model: sample circuit 1 and sample circuit 2 all comprise transformer B1, B2, rectification circuit T1, T2 and current-limiting resistance R1～R4, and the secondary voltage of two transformers equates that R1～R4 resistance value is identical; The positive pole of sample circuit 1 output is connected with the negative pole of sample circuit 2 outputs, the negative pole of sample circuit 1 output is connected with the positive pole of sample circuit 2 outputs, two tie point D, E are connected with the rectifier bridge T3 of comparator circuit, the output terminal of the rectifier bridge T3 of comparator circuit is connected with the control utmost point of controllable silicon SCR, and R5, R7, C1 form the control circuit of controllable silicon SCR; Controllable silicon SCR is connected in the electric power loop of warning executive circuit.

The warning executive circuit comprises telephone call circuit and reset circuit, the opening by telephone circuit of telephone call circuit comprises the relay coil J1 that is connected in parallel on warning executive circuit electric power loop, and the normally opened contact J1K of relay J 1 is connected among the inlet wire L of alarm call TLP base or is connected to the assignment key TLH two ends of mobile phone.

When alarm call TLP was base, the phone driving circuit comprised the on-off circuit of being made up of timer, decimal system counting/allotter circuit and triode Q1, and triode Q1 output redials with alarm call TLP and is connected.

Reset circuit in the warning executive circuit comprises the normally closed contact J2K of the relay J 2 that is connected on warning executive circuit electric power loop; The 11 pin output of decimal system counting/allotter circuit is connected with triode Q2 base stage, and relay J 2 coils are connected on the output loop of triode Q2.

The work engineering: the square wave that timer NE555 sends 0.3Hz is added to 14 pin of decimal system counting/allotter circuit CD4017, drives triode Q1 conducting at its 3 pin output high level, and triode Q1 exports to redial with alarm call TLP and is connected; When the controllable silicon SCR conducting, the normally opened contact adhesive of relay J 1, the phone driving circuit gets electric, and alarm call TLP transfers to the telephone number that prestores to report to the police, and determines alert locations to showing by caller ID.

After dialing about 30 seconds, 11 pin of decimal system counting/allotter circuit CD4017 output high level drives triode Q2 conducting, and it is electric to make that relay J 2 coils get, and normally closed contact J2 disconnects, and all circuit reset enters the next circulation that detects.

When circuit normally had a power failure, B1, B2 be decompression simultaneously, and D, E both end voltage are 0V, not conducting of SCR, and warning device is not worked.Therefore device can be judged normal power failure and stolen, can malfunction.

The audible alarm circuit: alarm HD uses Taiwan to produce SUN WAY SIREN HORN115dB 5W DC6---12V type, and three kinds of alarm sounds are arranged.As controllable silicon SCR actuating switch K1 if closed, alarm HD audible alarm.

S1: preset number buttons after pressing, is provided with the number that will dial.

S2: test button is used for the working condition of testing fixture.

S3: stop button, withdraw from trystate, circuit reset.

Fig. 3 is that telephone call adopts the base connection layout:

Use No. one telephone wire as telephone call, remove the take-up switch TLK1 of telephone set, with arbitrary circuit in two lines of the former take-up switch of lead short circuit, and J1 normally opened contact and line after button S1 is in parallel be serially connected with in another circuit among the former take-up switch TLK1.Press S1, make telephone set be in off hook state, measure the polarity of voltage at redial key TLK2 two ends with multimeter, the collector of triode Q1 is connected to the TLK2 hot end, the emitter of Q1 connects TLK2 low spot position end.TLC is a telephone line plug.

Fig. 4 is that telephone call adopts the mobile phone connection layout:

If use mobile phone, then do not need triode Q1, the assignment key TLH two ends that the normally opened contact of J1 are connected to mobile phone get final product.

This device is connected to 380V three-phase four-wire power supply line end, the safe operation of monitoring circuit total length.Phone in the warning device is in hook state for a long time, only when being cut, used by cable about 30 seconds, and be at dead of night because the robber cuts the cable overwhelming majority, so, the conflict phenomenon with the telephone subscriber can not appear.By accompanying drawing as can be known, when normal operation, after the output voltage rectification of sampling transformer B1, B2, through the high impedance short circuit, D, E both end voltage are 0V, not conducting of SCR triggerless pulse, and warning device is not worked.Owing to steal when cutting cable, once can only cut one, can not be two and abovely cut off simultaneously, otherwise can cause short circuit to blow out.When in A, B, C, the O circuit arbitrary B1 or B2 quit work when disconnecting, D, E terminal voltage be+6V or-6V, after rectification, add to the SCR control utmost point, make its conducting.115dB alarm work (can according to circumstances select quiet), relay J 1 excitation, the J1 contact is connected telephone set.Simultaneously, timer NE555 sends 14 pin of the square wave of 0.3Hz to decimal system counting/allotter circuit CD4017, drive triode Q1 conducting at its 3 pin output high level, redial the telephone number that prestores and report to the police, determine alert locations showing by caller ID.After dialing about 30 seconds, 11 pin of CD4017 output high level drives triode Q2 conducting, makes the close point of relay J 2 open, and all circuit reset enters the next circulation that detects.When circuit normally had a power failure, B1, B2 be decompression simultaneously, and D, E both end voltage are 0V, not conducting of SCR, and warning device is not worked.Therefore device can be judged normal power failure and stolen, can malfunction.

Circuit powers on after installing, and regulates 200K potentiometer RW, and making the 3 pin output square-wave cycle of NE555 is 3 seconds.Find out the two ends that telephone set " redials " key, and measure its voltage, the collector of noble potential termination triode Q1, the emitter of electronegative potential termination triode Q1.

Package unit can be installed in the sky electric energy watchcase, and the ammeter box of packing into has disguised preferably.

Claims

1. a cable is stolen and is cut intelligent alarm device, comprise sample circuit, comparator circuit, the warning executive circuit, it is characterized in that: sample circuit comprises that four lines by three-phase four-wire system divide two groups of sample circuits that connect respectively 1, sample circuit 2, sample circuit 1 is connected with comparator circuit with sample circuit 2, the output of comparator circuit is connected with the warning executive circuit, sample circuit 1 and sample circuit 2 all comprise transformer, rectification circuit and current-limiting resistance, the secondary voltage of two transformers equates, the positive pole of sample circuit 1 output is connected with the negative pole of sample circuit 2 outputs, the negative pole of sample circuit 1 output is connected with the positive pole of sample circuit 2 outputs, two tie points are connected with the rectifier bridge of comparator circuit, the output terminal of comparator circuit is connected with the silicon controlled control utmost point, and controllable silicon is connected in the electric power loop of warning executive circuit.

2. cable according to claim 1 is stolen and is cut intelligent alarm device, it is characterized in that: the warning executive circuit comprises telephone call circuit and reset circuit, the opening by telephone circuit of telephone call circuit comprises the relay coil J1 that is connected in parallel on warning executive circuit electric power loop, and the normally opened contact J1K of relay J 1 is connected among the inlet wire L of alarm call TLP base or is connected to the assignment key TLH two ends of mobile phone.

3. cable according to claim 2 is stolen and is cut intelligent alarm device, it is characterized in that: when alarm call TLP is base, the telephone call circuit comprises the phone driving circuit, the phone driving circuit comprises the on-off circuit of being made up of timer, decimal system counting/allotter circuit and triode Q1, and triode Q1 output redials with alarm call TLP and is connected.

4. cut intelligent alarm device according to claim 2 or 3 described cables robbers, it is characterized in that: the reset circuit in the warning executive circuit comprises the normally closed contact J2K and relay J 2 coil drivers of the relay J 2 that is connected on warning executive circuit electric power loop.

5. cable according to claim 1 and 2 is stolen and is cut intelligent alarm device, and it is characterized in that: the warning executive circuit comprises the audible alarm circuit.