CN2289350Y

CN2289350Y - Theft-proof alarm positioning and range finding dual-purpose device for communication cable

Info

Publication number: CN2289350Y
Application number: CN96211463U
Authority: CN
Inventors: 王剑锋
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-05-25
Filing date: 1996-05-25
Publication date: 1998-08-26
Anticipated expiration: 2006-05-25

Abstract

The utility model provides a theft-proof alarm positioning and range finding dual-purpose device for communication cables, which is composed of a host unit, a circuit alarm detection unit, a line parameter measuring unit and a function converting unit. The utility model can detect a plurality of cables simultaneously. When an anti-theft cable is stolen and cut off, the outgoing signal of the circuit alarm detection unit varies, causing a host to give response. Acousto-optical alarm is emitted and simultaneously a corresponding relay is driven to cause the stolen cable pairs to switch to the parameter measuring unit. After the capacitance or resistance parameter of the circuit at this point is detected, the capacitance or resistance parameter is compared and calculated by the host unit, so that the position of the cut point of the cable is determined and is displayed and printed. The utility model can also be used for ranging alone in electric construction and maintenance. The utility model combines theft-proof alarm and positioning together, simultaneously realizing the effect of one machine with multiple functions.

Description

Telecommunication cable burglar alarm location, range finding dual-purpose apparatus

The utility model provides a kind of telecommunication cable burglar alarm location, range finding dual-purpose apparatus, belongs to telecommunication cable circuit maintenance test instrument.

At present, in the anti-theft technique of telecommunication cable, adopting more is the method that alarm detection and range finding combine.Wherein alarm unit has all adopted the method for this simple possible of loop detection basically, and the method that distance measurement function adopts is not quite similar.The utility model patent of Chinese patent communique mandate for example: circuitry obstacle autoalarm (application number: 93224906), it comprises high interior resistance circuit, fixed bias loop, DC operation loop, alarm loop, its essence is to have solved burglar alarm that its range finding is to cooperate the All other routes rangefinder to realize.Defective is the technology more complicated, and cost height, and complicated operation are unfavorable for the rapid property that burglar alarm is located.(application number: 95234058.5), the capacitance parameter metering system is adopted in its range finding to another kind of anti-theft positioning alarming device.Its defective is can measure distance can only realize that cable is stolen and cut off the time, can not realize range finding to detection loop stealing the situation that short circuit appears in cutpoint, and above in addition instrumental function is single: report to the police and find range and can not realize not only can carrying out simultaneously but also using separately.

The purpose of this utility model provides a kind of warning and the location unites two into one, when promptly and accurately reporting to the police, to the detection loop of detected cable can both be in time under the situation that short circuit a little occurs, open circuit that is cut, accurate location, can be used as the telecommunication cable circuit maintenance tool of the rangefinder that can use separately simultaneously again.

The utility model is achieved in that

A kind of telecommunication cable burglar alarm location, range finding dual-purpose apparatus, form by main computer unit, circuit alarm detecting unit, line parameter circuit value measuring unit, function converting unit, wherein main computer unit is by its input, output control mouthful detection alarm unit, when response is reported to the police at any time, start the function converting unit, make the line parameter circuit value measuring unit finish range finding; All be to use separately between each unit of other of circuit.

Described burglar alarm location, range finding dual-purpose apparatus, its main computer unit is made up of general single chip U1 (8031); Wherein 8031 P1.7, P1.6, P1.0, INT1 are used for the detection line alarm detecting unit, and P1.5, P1.4, P1.3 are used for the trigger parameter measuring unit, and INT0 is used to pick up the signal of measuring unit, and P3.5 is used for the state of measuring ability converting unit.

Described burglar alarm location, the range finding dual-purpose apparatus, its circuit alarm detecting unit is made up of X1, X2, first, second relay J 1 with two groups of contacts, J2, photoelectrical coupler O1, O2, d type flip flop G1, G2, eight input nand gate U4, inverter U5, current-limiting resistance R11, R12, clamped resistance R 21, R22 the standby heart yearn of the cable of terminal short circuit; Wherein cable pairs X1 and X2 respectively connect two intermediate contacts 1 of first relay J 1, two intermediate contacts 1 of 2 and second relay J 2,2, two normally-closed contact 1a of first relay J 1,1b connects the negative-phase input of the power supply ground and the first photoelectrical coupler O1 respectively, two normally-closed contact 1a of second relay J 2,1b connects the negative-phase input of the power supply ground and the second photoelectrical coupler O2 respectively, two photoelectrical coupler O1, the normal phase input end of O2 is respectively respectively through a current-limiting resistance R11, R12 connects+the 12V power supply, the positive output end of two photoelectrical coupler O1 and O2 respectively connects first respectively, the CLK end of the second d type flip flop G1 and G2, first, the end of the second clamped resistance R 21 and R22, the other end of the first clamped resistance R 21 meets the data input pin D of the first d type flip flop G1 respectively, set end SD and+the 5V power supply, the other end of the second clamped resistance R 22 meets the data input pin D of the second d type flip flop G2 respectively, set end SD and+the 5V power supply, the reset terminal CD of two d type flip flops meets the delivery outlet P1.7 of single-chip microcomputer U1 (8031), the anti-phase delivery outlet of first d type flip flop connects the input port P1.6 of single-chip microcomputer U1 (8031) and the input of eight input nand gate U4 respectively, the anti-phase delivery outlet of second d type flip flop connects another input port P1.0 of single-chip microcomputer 8031 and another input of eight input nand gate U4 respectively, the input of the output termination one inverter U5 of this NAND gate, the output of this inverter meet the external interrupt mouth INT1 of single-chip microcomputer U1 (8031); The circuit alarm detecting unit detects response by single-chip microcomputer in good time.

Described burglar alarm location, the range finding dual-purpose apparatus, its line parameter circuit value measuring unit is by double-point double-throw switch K, first relay J 1, second relay J 2, the 3rd relay J, dual time-base ic U3, alternative data selector U2, first resistance R 3, first capacitor C 1, second resistance R 7, second capacitor C 8, the first pull-up resistor R1, the second pull-up resistor R6, the first divider resistance R2, the second divider resistance R4, the 3rd divider resistance R5, the 4th divider resistance R8, the first coupling capacitance C2, the second coupling capacitance C5, the first filter capacitor C3, the second filter capacitor C4, the 5th divider resistance Ra, the 6th divider resistance Rb, the 7th divider resistance Rc, the 8th divider resistance Rd forms; Wherein the contact 2a of double-point double-throw switch K respectively connects first respectively, second relay J 1, the normally opened contact 2a of J2, one common contact 2 of the 3rd relay J respectively connects first respectively, another normally opened contact 2b of second relay J 1 and J2, the common contact 1 of K switch connects another common contact 1 of the 3rd relay J, one normally-closed contact 1a of the 3rd relay J meets the THR1 of dual time-base ic U3 respectively, the DIS1 end, one end of first capacitor C 1, one end of first resistance R 3, another termination power ground of first capacitor C 1, another termination+12V power supply of first resistance R 3, another normally-closed contact 1b of the 3rd relay J connects power supply ground, one normally opened contact 2a of the 3rd relay J meets the THR2 of dual time-base ic U3 respectively, one end of the DIS2 end and second capacitor C 8, another termination power ground of second capacitor C 8; Another normally opened contact 2b of the 3rd relay J connects an end of second resistance R 7, and R1, the R2 of the other end of second resistance R 7 and dual time-base ic U3, VCC end all connects+the 12V power supply; The two trigger end TRIG1 of dual time-base ic U3, TRIG2 is respectively respectively through first, the second filter capacitor C2, C5 meets the two delivery outlet P1.5 of single-chip microcomputer U1 (8031), P1.4, TRIG1 connects first again simultaneously, the second divider resistance R2, the end of R4, the other end of two resistance connects respectively+12V and power supply ground, TRIG2 connects the 3rd again, the 4th divider resistance R5, the end of R8, the other end of two resistance connects respectively+12V and power supply ground, first, the second pull-up resistor R1, each end of R6 respectively meets the P1.5 of U1 respectively, the P1.4 mouth, their another termination+12V power supply, the CVoitl of U3, CVoit2 is respectively respectively through a filter capacitor C3, C4 ground connection; Two output Q1, the Q2 of dual time-base ic U3 respectively connects the end of the 6th, the 8th divider resistance Rb, Rd respectively, the other end of two resistance respectively meets two input 1B, the 1A of alternative data selector U2 respectively, each connects power supply ground through the 5th, the 8th divider resistance Ra, Rc simultaneously, the control end A/B of data selector U2 meets the delivery outlet P1.3 of single-chip microcomputer U1 (8031), and the output 1Y of data selector U2 meets another external interrupt mouth INT0 of single-chip microcomputer U1.

Described burglar alarm location, range finding dual-purpose apparatus, its function converting unit is made up of double-point double-throw switch K, the 3rd relay J, both-end socket B, clamped resistance R; Wherein the end a of both-end socket B connects another common contact 2 of the 3rd relay J, and the other end b of both-end socket B meets the contact 1a of double-point double-throw switch K; The contact 1b of double-pole switch K connects power supply ground, and contact 2b connects positive 5V power supply through a clamped resistance R; The contact 2 of double-pole switch K meets the input P3.5 of single-chip microcomputer U1; Both-end socket B is used for this device when using as rangefinder, external measured cable pair.

The utility model compared with prior art unites two into one the burglar alarm and the location of telecommunication cable, when accurately reporting to the police rapidly, and automatic range location, ageing height; The switching of function converting unit can make range finding carry out separately again simultaneously, has reached effect of one machine multiple purposes, makes usability stronger.

Accompanying drawing 1 is the circuit theory diagrams of the utility model embodiment.

Below in conjunction with drawings and Examples the utility model is done further carefully to state:

In the present embodiment, K adopts double-point double-throw switch, and J1, J2, J all adopt the relay J RC-19FI of two groups contact, and U3 adopts dual time-base ic NE556, and U2 adopts 2 to select 1 data selector 74HCT157, and U1 selects single-chip microcomputer 8031 for use.

In the function converting unit, it is high level that K switch is thrown the signal of exporting to the detection mouth P3.5 of single-chip microcomputer U1 (8031) when the position of duplex end 2a, 2b, and single-chip microcomputer confirms that device is an alarm condition; K switch is thrown when the position of duplex end 1a, 1b, and the signal of exporting to the detection mouth P3.5 of single-chip microcomputer U1 (8031) is a low level, and single-chip microcomputer confirms that device is a distance measuring states.

Under alarm condition, the signal that photoelectrical coupler O1, O2 export to the clock end CLK of d type flip flop G1, G2 keeps low level at ordinary times, the reversed-phase output output high level signal of d type flip flop, one tunnel signal that connects single-chip microcomputer 8031 is judged input port P1.6, P1.0, and the high level signal of another road behind NAND gate U4, inverter U5 exported to the alert detecting mouth INT1 of single-chip microcomputer 8031; When wherein a cable is stolen, its standby heart yearn disconnects X1 (or X2), the output signal of corresponding photoelectrical coupler O1 (or O2) sports high level, triggering d type flip flop G1 (or G2) makes its reversed-phase output output signal become low level, the also corresponding low level that becomes of signal of the INT1 end of single-chip microcomputer 8031, respond the variation of alarm detecting unit signals this moment 8031, from P1.6, when the stolen warning of which bar cable is judged in the variation of P1.0 input port signal, drive corresponding relays J1 (or J2) action, make its normally opened contact closure, the detection heart yearn that makes stolen cable is to switching to the line parameter circuit value measuring unit, then by the parameter of single-chip microcomputer 8031 control circuit parameter measurement unit measurement circuitry.

The line parameter circuit value measuring unit is made up of two parts: line capacitance parameter measurement circuit and line resistance parameter measurement circuit; The line capacitance parameter measurement circuit is by U3 NE556, R3, C1 forms, the control mouth P1.5 of single-chip microcomputer U1 (8031) exports an initiating trigger signal is added to U3 through coupling capacitance C2 TRIG1 end during measurement, output one of Q1 end and the linear square-wave pulse of test line parameter by U3, through divider resistance Ra, export to the IB end of data selector U2 after the Rb dividing potential drop, U1 (8031) is before control survey, by control mouthful P1.3 output high level signal, make the delivery outlet 1Y of U2 export to the signal of the signal of U1 (8031) for its input port 1B, like this, capacitance parameter measurement result (square-wave pulse) also just inputs to 8031 single-chip microcomputers and detect to handle this pulse by it and be corresponding with it length; The line resistance parameter measurement circuit is by U3, R7, C8 forms, the control mouth P1.4 of single-chip microcomputer 8031 exports an initiating trigger signal is added to U3 through coupling capacitance C5 TRIG2 end during measurement, output one of Q2 end and the linear square-wave pulse of test line parameter by U3, through divider resistance Rc, export to the 1A end of data selector U2 after the Rd dividing potential drop, 8031 before control survey, by control mouthful P1.3 output low level signal, make the delivery outlet 1Y of U2 export to the signal of the signal of U1 (8031) for its input port 1A, like this, capacitance parameter measurement result (square-wave pulse) also just inputs to single-chip microcomputer U1 (8031), detecting this pulse of processing by it is corresponding with it length, divider resistance R2, R4, R5, the dividing potential drop of R8 makes TRIG1, the TRIG2 end reaches required operating voltage, R1, draw on the R6 to P1.5, P1.4 provides enough level.

Under distance measuring states, tested cable pairs X1, X2 connect a, the b two ends of both-end socket B, by single-chip microcomputer U1 (8031) input order accordingly, U1 control circuit parameter measurement unit is finished the measurement to electric capacity, resistance parameter automatically, measurement result is exported to single-chip microcomputer, is treated to corresponding with it length by it.

In cable stolen or when range finding,, single-chip microcomputer switches to cable the corresponding parameters measuring circuit according to the state (opening circuit or short circuit) of stolen cable or tested cable automatically by control relay J, and tracking measurement, until detecting stolen point or fault point.

Claims

1, a kind of telecommunication cable burglar alarm location, range finding dual-purpose apparatus is characterized in that it is made up of main computer unit, circuit alarm detecting unit, line parameter circuit value measuring unit, function converting unit; Main computer unit is made up of prior art single-chip microcomputer 8031, its port P1.7 is two photoelectrical coupler G1, the port CD of G2 of link alarm detecting unit respectively, P1.6, P1.0 respectively connect the Q port of G1, G2 respectively, the delivery outlet of the inverter U5 of INT1 detecting unit taking alarm; The common contact 2 of the double-point double-throw switch K of the port P3.5 connection function converting unit of single-chip microcomputer; Each respectively meets trigger end TRIG1, the TRIG2 of the dual time-base ic U3 of parameter measurement unit to port P1.5, the P1.4 of single-chip microcomputer through a filter capacitor C2, C5 respectively, P1.3 meets the port A/B of the data selector U2 of parameter measurement unit, and INT0 connects the 1Y port of U2.

2, telecommunication cable burglar alarm as claimed in claim 1 location, range finding dual-purpose apparatus is characterized in that its circuit alarm detecting unit is made up of cable pairs X1, the X2 of terminal short circuit, first, second relay J 1 with two groups of contacts, J2, photoelectrical coupler O1, O2, d type flip flop G1, G2, eight input nand gate U4, inverter U5, current-limiting resistance R11, R12, clamped resistance R 21, R22; Wherein cable pairs X1 and X2 respectively connect two intermediate contacts 1 of first relay J 1, two intermediate contacts 1 of 2 and second relay J 2,2, two normally-closed contact 1a of first relay J 1,1b connects the negative-phase input of the power supply ground and the first photoelectrical coupler O1 respectively, two normally-closed contact 1a of second relay J 2,1b connects the negative-phase input of the power supply ground and the second photoelectrical coupler O2 respectively, two photoelectrical coupler O1, the normal phase input end of O2 is respectively respectively through a current-limiting resistance R11, R12 connects+the 12V power supply, the positive output end of two photoelectrical coupler O1 and O2 respectively connects first respectively, the CLK end of the second d type flip flop G1 and G2, first, the end of the second clamped resistance R 21 and R22, the other end of the first clamped resistance R 21 meets the data input pin D of the first d type flip flop G1 respectively, set end SD and+the 5V power supply, the other end of the second clamped resistance R 22 meets the data input pin D of the second d type flip flop G2 respectively, set end SD and positive 5V power supply, the reset terminal CD of two d type flip flops meets the delivery outlet P1.7 of single-chip microcomputer U1 (8031), the anti-phase delivery outlet of first d type flip flop connects the input port P1.6 of single-chip microcomputer U1 (8031) and the input of eight input nand gate U4 respectively, the anti-phase delivery outlet of second d type flip flop connects another input port P1.0 of single-chip microcomputer 8031 and another input of eight input nand gate U4 respectively, the input of the output termination one inverter U5 of this NAND gate, the output of this inverter meet the external interrupt mouth INT1 of single-chip microcomputer U1 (8031).

3, telecommunication cable burglar alarm as claimed in claim 1 location, the range finding dual-purpose apparatus, the line parameter circuit value measuring unit that it is characterized in that it is by double-point double-throw switch K, first relay J 1, second relay J 2, the 3rd relay J, dual time-base ic U3, alternative data selector U2, first resistance R 3, first capacitor C 1, second resistance R 7, second capacitor C 8, the first pull-up resistor R1, the second pull-up resistor R6, the first divider resistance R2, the second divider resistance R4, the 3rd divider resistance R5, the 4th divider resistance R8, the first coupling capacitance C2, the second coupling capacitance C5, the first filter capacitor C3, the second filter capacitor C4, the 5th divider resistance Ra, the 6th divider resistance Rb, the 7th divider resistance Rc, the 8th divider resistance Rd forms; Wherein the contact 2a of double-point double-throw switch K respectively connects first respectively, second relay J 1, the normally opened contact 2a of J2, one common contact 2 of the 3rd relay J respectively connects first respectively, another normally opened contact 2b of second relay J 1 and J2, the common contact 1 of K switch connects another common contact 1 of the 3rd relay J, one normally-closed contact 1a of the 3rd relay J meets the THR1 of dual time-base ic U3 respectively, the DIS1 end, one end of first capacitor C 1, one end of first resistance R 3, another termination power ground of first capacitor C 1, first resistance R, 3 another termination+12V power supplys, another normally-closed contact 1b of the 3rd relay J connects power supply ground, one normally opened contact 2a of the 3rd relay J meets the THR2 of dual time-base ic U3 respectively, one end of the DIS2 end and second capacitor C 8, another termination power ground of second capacitor C 8; Another normally opened contact 2b of the 3rd relay J connects an end of second resistance R 7, and R1, the R2 of the other end of second resistance R 7 and dual time-base ic U3, VCC end all connects+the 12V power supply; The two trigger end TRIG1 of dual time-base ic U3, TRIG2 is respectively respectively through first, the second filter capacitor C2, C5 meets the two delivery outlet P1.5 of single-chip microcomputer U1 (8031), P1.4, TRIG1 connects first again simultaneously, the second divider resistance R2, the end of R4, the other end of two resistance connects respectively+12V and power supply ground, TRIG2 connects the 3rd again, the 4th divider resistance R5, the end of R8, the other end of two resistance connects respectively+12V and power supply ground, first, the second pull-up resistor R1, each end of R6 respectively meets the P1.5 of U1 respectively, the P1.4 mouth, their another termination+12V power supply, the CVoitl of U3, CVoit2 is respectively respectively through a filter capacitor C3, C4 ground connection; Two output Q1, the Q2 of dual time-base ic U3 respectively connects the end of the 6th, the 8th divider resistance Rb, Rd respectively, the other end of two resistance respectively meets two input 1B, the 1A of alternative data selector U2 respectively, each connects power supply ground through the 5th, the 8th divider resistance Ra, Rc simultaneously, the control end A/B of data selector U2 meets the delivery outlet P1.3 of single-chip microcomputer U1 (8031), and the output 1Y of data selector U2 meets another external interrupt mouth INT0 of single-chip microcomputer U1.

4, telecommunication cable burglar alarm as claimed in claim 1 location, range finding dual-purpose apparatus is characterized in that its function converting unit is made up of double-point double-throw switch K, the 3rd relay J, both-end socket B, clamped resistance R; Wherein the end a of both-end socket B connects another common contact 2 of the 3rd relay J, and the other end b of both-end socket B meets the contact 1a of double-point double-throw switch K; The contact 1b of double-pole switch K connects power supply ground, and contact 2b connects positive 5V power supply through a clamped resistance R; The contact 2 of double-pole switch K meets the input P3.5 of single-chip microcomputer U1.