CN101201960A

CN101201960A - Cable anti-theft alarm system

Info

Publication number: CN101201960A
Application number: CNA2006101462569A
Authority: CN
Inventors: 党金春; 张建忠; 原永志; 刘德利
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-12-15
Filing date: 2006-12-15
Publication date: 2008-06-18

Abstract

The invention discloses an alarm system used for preventing cables from being stolen, which consists of a wireless telephone, a charging circuit and a transformer. The invention is characterized in that the wireless telephone is respectively connected with an automatic dial-up circuit, an automatic power-on resetting circuit and the charging circuit, a broken line detection circuit is respectively connected with the automatic dial-up circuit and the transformer, the broken line detection circuit is further connected with a loop bridge circuit through a null line of a detected power supply circuit, and the transformer is further connected with the charging circuit, and is connected with the loop bridge circuit through any live wire of the detected power supply circuit. The invention is characterized by real time monitoring, timely positioning alarm, low maintenance cost and low rate of false alarm and being capable of reducing the maintenance pressure of the power supply circuit.

Description

A kind of cable anti-theft alarm system

One, technical field

The invention belongs to powered lighting circuit technical field, especially relate to a kind of cable anti-theft alarm system.

Two, background technology

Light conduits in all parts of the country, stolen phenomenon is very general, lose also every year on average small and medium-sized cities can cross 1,000,000, there is not a kind of effectively preventing to steal the effective means of cutting cable at present, general employing is manually on duty, the mode of inspection, and this mode manpower consumption is bigger, and cost is higher, simultaneously can't monitor supply line constantly, the phenomenon that is cut can't be avoided fully.

Three, summary of the invention

The objective of the invention is to improve the deficiency of prior art and provide a kind of real-time monitoring, in time locating alarming, alleviate supply line and safeguard pressure, the cable anti-theft alarm system that maintenance cost is low, rate of false alarm is low.

The object of the present invention is achieved like this, a kind of cable anti-theft alarm system, form by wireless telephone, charging circuit and transformer, be characterized in that wireless telephone is connected with charging circuit with automatic dial-up circuit, Auto Power On reset circuit respectively, break detection circuit is connected with automatic dial-up circuit, transformer respectively, break detection circuit also passes through the zero line link circuit bridge circuit of monitored supply line, transformer also is connected with charging circuit, and transformer is connected with the loop bridge circuit by any live wire of monitored supply line.

Automatic dial-up circuit be integrated circuit (IC) 21,2,3,4,7,8,9, pin is connected with wireless telephonic dial-out key contact BH, BL, downturning key contact XH, XL, battery cathode V-, start key contact KL, KH pin respectively, the 6th pin of the integrated circuit (IC) 3 in the 6th pin and the Auto Power On reset circuit is connected, 5th, 13,14 pin are connected with the 2nd, 1,12 pin of integrated circuit (IC) 1 in the break detection circuit respectively, and the 14th pin also is connected with the 1st pin of integrated circuit (IC) 3 in the Auto Power On reset circuit and wireless telephonic anode V+ pin connects.

The Auto Power On reset circuit is that 14 pin and the wireless telephonic anode V+ pin of the integrated circuit (IC) 2 in the 1st pin and the automatic dial-up circuit of integrated circuit (IC) 3 is connected, the 5th pin is connected with 1 pin of the regulator block IC4 of anodal DC+ pin of wireless telephonic charging jack and charging circuit, the 6th pin is connected with the 6th pin of integrated circuit (IC) 2 in the automatic dial-up circuit, the 7th pin is connected 11 pin of the integrated circuit (IC) 1 in the 8th pin and the break detection circuit with wireless telephonic IC-card seat VSIM pin, 7 pin of the integrated circuit (IC) 2 in the automatic dial-up circuit, wireless telephonic battery cathode V-pin connects.

Break detection circuit is the 2nd of an integrated circuit (IC) 1,1,12 pin respectively with automatic dial-up circuit in integrated circuit (IC) 2 the 5th, 13,14 pin connect, 12 pin also with the Auto Power On reset circuit in the 1st pin of integrated circuit (IC) 3, wireless telephonic anode V+ pin connects, the 8th pin of integrated circuit (IC) 3 in the 11st pin and the Auto Power On reset circuit, wireless telephonic battery cathode V-pin connects, be connected by resistance R 1 between the 12nd pin and the 3rd pin, the 3rd pin also connects capacitor C 3, the parallel connected end of diode D1, connect 2 pin of the primary coil of transformer T1 after capacitor C 3 is connected in series diode D2 and diode D1 is in parallel, the tie point of capacitor C 3 and diode D2 connects the zero line of supply line.

The loop bridge circuit is to be connected by wye connection by 3 identical telefault L1, L2, L3, star-like central contact connects the zero line side of monitored service cable, common reference end in another termination break detection circuit of zero line, the branch end of 3 inductance is received A, B, C three-phase firewire end respectively, and wherein a live wire other end is connected with 1 pin of the primary coil of transformer T1.

Charging circuit is that the two ends of the secondary coil of transformer T1 are connected with 1,2 pin of rectifying block DL, 3 pin, 2 pin that the output 3 pin positive poles of rectifying block DL, 4 pin negative poles meet regulator block IC4 respectively, 3,4 pin of rectifying block DL are also by capacitor C 1 serial connection, the DC+ that 1 pin of regulator block IC4,2 pin connect wireless telephonic charging jack respectively is connected with DC-, and 1 pin of regulator block IC4,2 pin are also by capacitor C 2 serial connections.

Compared with the prior art the present invention has following distinguishing feature and good effect: wireless telephone of the present invention respectively with automatic dial-up circuit, the Auto Power On reset circuit is connected with charger, break detection circuit respectively with automatic dial-up circuit, charger, transformer connects, break detection circuit also connects the zero line of supply line, transformer is connected with charger, transformer also and connect a live wire of supply line, the loop bridge circuit connects zero line and three live wires of supply line, form a closed network by detected cable, this device is furnished with standby power supply, even when having a power failure, also can constitute the closed-loop path by cable and loop bridge, if broken string, just can't receive the signal of passback, make dial-up circuit transfer to the alarm call number that prestores, continue dialing one minute; The two minutes back eye monitors of delaying time are put through alarm call once more, guarantee that reliably errorless, special-purpose alarm call can utilize phonebook function, the position of each monitoring point are associated with number, in case the intercepted position of cable can be accurately located in ring; This device utilizes ripe mobile phone wireless communication network, and stable and reliable for performance, Installation and Debugging are simple and convenient, do not need extra distribution, are the first-selected instruments of road lighting cable and other cable monitoring, also can flexible Application need the field of monitor alarm in other.

Four, description of drawings

Below in conjunction with drawings and Examples the present invention is described in further detail.

Fig. 1 is a kind of structural representation of the present invention.

Fig. 2 is an electronic-circuit diagram of the present invention.

Five, specific embodiments

Embodiment 1, a kind of cable anti-theft alarm system, with reference to Fig. 1, Fig. 2, be by wireless telephone 1, charging circuit 2 and transformer 3 are formed, wireless telephone 1 respectively with automatic dial-up circuit 4, Auto Power On reset circuit 5 is connected with charging circuit 2, break detection circuit 6 respectively with automatic dial-up circuit 4, transformer 3 connects, break detection circuit 6 also passes through the zero line link circuit bridge circuit 7 of monitored supply line, transformer 3 also is connected with charging circuit 2, transformer 3 is connected with loop bridge circuit 7 by any live wire of monitored supply line, automatic dial-up circuit 4 is 1 of integrated circuit (IC) 2,2,3,4,7,8,9, pin respectively with the dial-out key contact BH of wireless telephone 1, BL, downturning key contact XH, XL, battery cathode V-, start key contact KL, the KH pin connects, the 6th pin of the integrated circuit (IC) 3 in the 6th pin and the Auto Power On reset circuit 5 is connected, the 5th, 13,14 pin respectively with break detection circuit 6 in integrated circuit (IC) 1 the 2nd, 1,12 pin connect, and the 14th pin also is connected with the 1st pin of integrated circuit (IC) 3 in the Auto Power On reset circuit 5 and the anode V+ pin connection of wireless telephone 1; Auto Power On reset circuit 5 is that 14 pin of the integrated circuit (IC) 2 in the 1st pin and the automatic dial-up circuit 4 of integrated circuit (IC) 3 and the anode V+ pin of wireless telephone 1 are connected, the 5th pin is connected with 1 pin of the regulator block IC4 of anodal DC+ pin of wireless telephonic charging jack and charging circuit 2, the 6th pin is connected with the 6th pin of integrated circuit (IC) 2 in the automatic dial-up circuit 4, the 7th pin is connected 11 pin of the integrated circuit (IC) 1 in the 8th pin and the break detection circuit 6 with the IC-card seat VSIM pin of

wireless telephone

1,7 pin of the integrated circuit (IC) 2 in the automatic dial-up circuit 4, the battery cathode V-pin of wireless telephone 1 connects; Break detection circuit 6 is the 2nd of integrated circuit (IC) 1,1,12 pin respectively with automatic dial-up circuit 4 in integrated circuit (IC) 2 the 5th, 13,14 pin connect, 12 pin also with Auto Power On reset circuit 5 in the 1st pin of integrated circuit (IC) 3, the anode V+ pin of wireless telephone 1 connects, the 8th pin of integrated circuit (IC) 3 in the 11st pin and the Auto Power On reset circuit 5, the battery cathode V-pin of wireless telephone 1 connects, be connected by resistance R 1 between the 12nd pin and the 3rd pin, the 3rd pin also connects capacitor C 3, the parallel connected end of diode D1, connect 2 pin of the primary coil of transformer 3T1 after capacitor C 3 is connected in series diode D2 and diode D1 is in parallel, the tie point of capacitor C 3 and diode D2 connects the zero line of supply line; Loop bridge circuit 7 is to be connected by wye connection by 3 identical telefault L1, L2, L3, star-like central contact connects the zero line side of monitored service cable, common reference end in another termination break detection circuit 6 of zero line, the branch end of 3 inductance is received A, B, C three-phase firewire end respectively, and wherein a live wire other end is connected with 1 pin of the primary coil of transformer 3T1; Charging circuit 2 is 1 of the two ends of secondary coil of transformer 3T1 and rectifying block DL, 2 pin connect, the output 3 pin positive poles of rectifying block DL, 4 pin negative poles connect 3 pin of regulator block IC4 respectively, 2 pin, 3 of rectifying block DL, 4 pin are also by capacitor C 1 serial connection, 1 pin of regulator block IC4, the DC+ that 2 pin connect the charging jack of wireless telephone 1 respectively is connected with DC-, 1 pin of regulator block IC4,2 pin are also by capacitor C 2 serial connections, in the present embodiment, integrated circuit (IC) 1 adopts ZD02, IC2 adopts 74HC4066, IC3 adopts ZD2QD, IC4 adopts MC78L08CP, and DL adopts DB107, and this has constituted a kind of structure of the present invention.

Circuit of the present invention mainly is made up of transformer 3, charging circuit 2, break detection circuit 6 and automatic dial-up circuit 4, mobile phone Auto Power On reset circuit 5, wireless telephone 1, loop bridge circuit 7 and protected monitoring cable etc., the VDD of IC1, IC2, IC3 all meets power supply V+, and VSS all meets power supply V-; Power-supply system is that 220L is connected on the live wire of monitored cable end piece, 220N is connected on the zero line, when electricity is arranged, 220 volts of alternating currents are transformed into 9 volts of low tensions through transformer 3T1, DL becomes Rectified alternating current through rectifier bridge, after being filtered into the smooth direct current electricity by electrochemical capacitor C1, be added to the 3 pin input ends of three terminal regulator IC4,8 volts of stable direct currents of 1 pin output DC+ by IC4, one the road to the anodal DC+ of wireless telephone charging jack, another road is delivered to 5 pin of IC3 and is done power supply detection usefulness, C2 plays the 2 pin output DC-of the anti-interference effect of filtering IC4 to wireless telephone charging jack negative pole DC-, IC1 to output voltage DC+ and power supply detection signal, IC2, the power supply of IC3 provides V+ by the battery in the wireless telephone 1, V-; Break detection circuit 6 is made up of 3 pin of primary winding of transformer 3T1, D1, D2, C3, R1, IC1, and automatic dial-up circuit 4 is formed dial system by 1 pin, 2 pin, 3 pin, 4 pin, 5 pin, 13 pin of 1 pin, 2 pin and the IC2 of IC1; By 1,2 pin of IC1,13,5,1,2,3,4 pin of IC2 constitute; When electricity is arranged, alternating current is through the K end of transformer 3T1 primary winding to stabilivolt D1 and D2, because the effect of D2, make the voltage of its K end between negative 0.6 volt to positive 3.6 volts by 50 hertz of variations, the termination V+ power supply of R1, the other end links to each other with the A end of D1, the anode of filter capacitor C3,3 pin of IC1, because the rectified action of D1 and the filter action of C3, make 3 pin of IC1 be in low level state, IC1 does not produce dial action; When not having electricity, because the other end of cable is at supply transformer control box place, be connected to the very little loop bridge circuit 7 of direct current resistance that telefault is formed in advance, electric current is got back to power supply V-through the series loop that primary winding → protected cable live wire → loop bridge coil → protected cable zero line is formed of power supply V+ → R1 → D1 → T1; Series loop except R1 can equivalence be a resistance R, and this R direct current resistance is much smaller than R1, and according to the series connection voltage divider principle as can be known, R and R1 contact place just 3 pin of IC1 still are in low level state, and IC1 does not still produce dial action; In case cable is cut off, series loop is disconnected, because the effect of pull-up resistor R1,3 pin of IC1 are drawn as high level, IC1 measures through 5 times and judges, as long as once remeasure for after the low level then clear 0, can effectively reject might be because of the wrong report of factors such as line contacts shake generation; If continuous 5 measurements of 3 pin are high level always, just export 13 pin and 5 pin of dial impulse to analog switch IC2 correspondence from 1 pin and 2 pin, 1,2 and 3,4 pin of IC2 are linked downturning key contact XH, XL and dial-out key contact BH, the BL of wireless telephone 1 respectively, transfer to the telephone number of the mobile phone on duty in the Control Room that is stored in advance in the phone directory, through about 10 seconds, the phone of mobile phone on duty will cause ring, according to caller identification, get final product locating alarming point position, dial once more once after two minutes, ensure correctness; Auto Power On reset circuit 5 is to form boot-strap circuit by 6,8,9 pin of 6 pin of IC3 and IC2, and 5 pin of IC3 are done power supply and detected; 7 pin of IC3 are made mobile phone and are detected, when IC3 rigidly connects energize or 5 pin when detecting by low transition to high level (alternating current has just been arranged), after stablizing for 5 seconds, from 6 pin output low level power-on pulses, deliver to input end 6 pin of IC2, be connected to wireless telephonic start key contact KL, KH from 8,9 pin of IC2, carry out the Auto Power On function; After wireless telephone 1 start, send 7 pin of high level signal to IC3 from IC-card seat VSIM pin, if wireless telephone 1 fails to open, 7 pin of IC3 can not receive the high level signal of VSIM, and IC3 can continue from 6 pin output low level power-on pulses, till start; Every day, system all can automatically reset once during street lamp power supply, road lamp power supply, eliminated the labile factor that might occur in working long hours; Loop bridge circuit 7 is to adopt 3 groups of identical telefault L1, L2, L3 of bearing 50 hertz of 380 volts of alternating currents, press wye connection, three ends are received respectively on A, B, the C live wire, mid point is received on the zero line, with protected cable and cable termination monitor, constitute a complete closed network, as long as cut off protected cable, return path signal is interrupted, and will report to the police; This device adopts inductance type loop bridge can practicably be connected in the higher supply line of voltage, and the power consumption that is produced is but extremely low, can disturb to reduce for the burn out detection loop provides low direct current resistance passage again; If adopt resistance to do the loop bridge, under low frequency low-resistance high voltage condition, big can't the accepting of power consumption meeting; If adopt electric capacity to do the loop bridge, can only be used for the higher occasion of frequency, and every street lamp all is connected to the bigger electric capacity of capacity, also can't distinguish useful signal.

Claims

1. cable anti-theft alarm device, be by wireless telephone (1), charging circuit (2) and transformer (3) are formed, it is characterized in that wireless telephone (1) respectively with automatic dial-up circuit (4), Auto Power On reset circuit (5) is connected with charging circuit (2), break detection circuit (6) respectively with automatic dial-up circuit (4), transformer (3) connects, break detection circuit (6) also passes through the zero line link circuit bridge circuit (7) of monitored supply line, transformer (3) also is connected with charging circuit (2), and transformer (3) is connected with loop bridge circuit (7) by any live wire of monitored supply line.

2. a kind of cable anti-theft alarm device according to claim 1, it is characterized in that described automatic dial-up circuit (4) is 1 of an integrated circuit (IC) 2,2,3,4,7,8,9, pin respectively with the dial-out key contact BH of wireless telephone (1), BL, downturning key contact XH, XL, battery cathode V-, start key contact KL, the KH pin connects, the 6th pin of the integrated circuit (IC) 3 in the 6th pin and the Auto Power On reset circuit (5) is connected, the 5th, 13,14 pin respectively with break detection circuit (6) in integrated circuit (IC) 1 the 2nd, 1,12 pin connect, and the 14th pin also is connected with the 1st pin of integrated circuit (IC) 3 in the Auto Power On reset circuit (5) and the anode V+ pin connection of wireless telephone (1).

3. a kind of cable anti-theft alarm device according to claim 1, it is characterized in that described Auto Power On reset circuit (5) is that 14 pin of the integrated circuit (IC) 2 in the 1st pin and the automatic dial-up circuit (4) of integrated circuit (IC) 3 and the anode V+ pin of wireless telephone (1) are connected, the 5th pin is connected with 1 pin of the regulator block IC4 of anodal DC+ pin of the charging jack of wireless telephone (1) and charging circuit (2), the 6th pin is connected with the 6th pin of integrated circuit (IC) 2 in the automatic dial-up circuit (4), the 7th pin is connected 11 pin of the integrated circuit (IC) 1 in the 8th pin and the break detection circuit (6) with the IC-card seat VSIM pin of wireless telephone (1), 7 pin of the integrated circuit (IC) 2 in the automatic dial-up circuit (4), the battery cathode V-pin of wireless telephone (1) connects.

4. a kind of cable anti-theft alarm device according to claim 1, it is characterized in that described break detection circuit (6) is the 2nd of an integrated circuit (IC) 1,1,12 pin respectively with automatic dial-up circuit (4) in integrated circuit (IC) 2 the 5th, 13,14 pin connect, 12 pin also with Auto Power On reset circuit (5) in the 1st pin of integrated circuit (IC) 3, the anode V+ pin of wireless telephone (1) connects, the 8th pin of integrated circuit (IC) 3 in the 11st pin and the Auto Power On reset circuit (5), the battery cathode V-pin of wireless telephone (1) connects, be connected by resistance R 1 between the 12nd pin and the 3rd pin, the 3rd pin also connects capacitor C 3, the parallel connected end of diode D1, connect 2 pin of the primary coil of transformer (3) T1 after capacitor C 3 is connected in series diode D2 and diode D1 is in parallel, the tie point of capacitor C 3 and diode D2 connects the zero line of supply line.

5. a kind of cable anti-theft alarm device according to claim 1, it is characterized in that described loop bridge circuit (7) is to be connected by wye connection by 3 identical telefault L1, L2, L3, star-like central contact connects the zero line side of monitored service cable, common reference end in another termination break detection circuit (6) of zero line, the branch end of 3 inductance is received A, B, C three-phase firewire end respectively, and wherein a live wire other end is connected with 1 pin of the primary coil of transformer (3) T1.

6. a kind of cable anti-theft alarm device according to claim 1, it is characterized in that described charging circuit (2) is that the two ends of the secondary coil of transformer (3) T1 are connected with 1,2 pin of rectifying block DL, 3 pin, 2 pin that the output 3 pin positive poles of rectifying block DL, 4 pin negative poles meet regulator block IC4 respectively, 3,4 pin of rectifying block DL are also by capacitor C 1 serial connection, the DC+ that 1 pin of regulator block IC4,2 pin connect the charging jack of wireless telephone (1) respectively is connected with DC-, and 1 pin of regulator block IC4,2 pin are also by capacitor C 2 serial connections.