CN109188175B - Cable surface magnetic leakage and mechanical wave composite fault detection alarm system - Google Patents
Cable surface magnetic leakage and mechanical wave composite fault detection alarm system Download PDFInfo
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- CN109188175B CN109188175B CN201811128417.0A CN201811128417A CN109188175B CN 109188175 B CN109188175 B CN 109188175B CN 201811128417 A CN201811128417 A CN 201811128417A CN 109188175 B CN109188175 B CN 109188175B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
The invention discloses a cable surface magnetic leakage and mechanical wave composite fault detection alarm system, which comprises a solenoid arranged inside a solenoid winding belt (3) and a solenoid connecting belt (4), a solenoid wrapped on the outer surface of a cable joint and a plurality of piezoresistors attached to the cable; the two ends of the solenoid are connected with an alarm bell light field fault indicator (5) through wires; the piezoresistors are connected to the singlechip measurement communication module (6) and transmit pressure signals to the singlechip measurement communication module, and the singlechip measurement communication module (6) is connected with the alarm bell light on-site fault indicator (5) and transmits alarm execution signals to the alarm bell light on-site fault indicator. The invention can rapidly and reliably detect the occurrence of cable faults and timely carry out local and remote alarms, and can rapidly detect and give out fault positions for cable faults far away from the installation position of the device.
Description
Technical Field
The invention relates to an automatic fault detection and alarm device, in particular to a cable surface magnetic leakage and mechanical wave composite fault detection and alarm system.
Background
At present, the high-voltage cable lines in the urban power grid are more and more, a plurality of cables are laid in the same cable duct, and a plurality of cables are damaged at the same time due to the fact that one cable is in fire, so that direct economic loss is huge. Some cables are buried directly in the ground, and are difficult to find when abnormality occurs. How to monitor the running state of the cable lines laid in the secret place on line, quickly find out abnormality and alarm is a problem which is solved by the technical staff in the industry. One of the weak links of the cable line is a joint in the cable during normal operation, the main technical means for detecting faults at the joint in the current industry is a temperature and smoke sensor, but the main problems of the methods are that the reaction speed is low, and the faults are detected until serious losses are caused by the accidents, so that a faster and more effective cable fault detector needs to be developed, early warning and quick processing are carried out, and the losses are reduced.
Disclosure of Invention
The invention solves the problems in the prior art, and provides a cable surface magnetic leakage and mechanical wave composite fault detection alarm system which can quickly and effectively detect cable faults, early warn and quickly process the cable faults.
In order to achieve the purpose, the invention provides a cable surface magnetic leakage and mechanical wave composite fault detection alarm system which comprises a solenoid winding belt, a piezoresistor wiring leading-out head belt and a piezoresistor wiring leading-out tail belt, wherein the solenoid winding belt is seamlessly wound on the outer surface of a cable connector, and the piezoresistor wiring leading-out head belt and the piezoresistor wiring leading-out tail belt are connected to two ends of the solenoid winding belt.
The inside of the solenoid winding belt is provided with a wire, and a solenoid connecting belt connected to the other sides of the piezoresistor wiring leading-out head belt and the piezoresistor wiring leading-out tail belt forms a complete solenoid wound on the outer side of the cable; the two ends of the solenoid are connected with the wiring end of the alarm bell light field fault indicator through wires;
the piezoresistor wiring lead-out head belt and the piezoresistor wiring lead-out tail belt are provided with a plurality of piezoresistors; the piezoresistors are connected with the singlechip measuring communication module through wires and send pressure signals to the singlechip measuring communication module; the number of the piezoresistors is any even number of more than two, and the piezoresistor wiring leading-out head belt and the piezoresistor wiring leading-out tail belt are arranged.
The alarm bell light field fault indicator is connected with the singlechip measurement communication module through a wire, and the singlechip measurement communication module sends an alarm execution signal to the alarm bell light field fault indicator.
In the above cable surface magnetic leakage and mechanical wave composite fault detection alarm system, in a preferred mode, the piezoresistor wiring leading-out head band comprises a first rectangular nylon soft band, a first soft connection female snap fastener terminal row arranged at the top of the first rectangular nylon soft band and a second soft connection female snap fastener terminal row arranged at the side of the first rectangular nylon soft band; one end of the first rectangular nylon soft belt is uniformly and longitudinally linearly provided with a first piezoresistor, a second piezoresistor and a third piezoresistor; the other end of the first rectangular nylon soft belt is uniformly and longitudinally linearly provided with a fourth piezoresistor, a fifth piezoresistor and a sixth piezoresistor; one end of the first piezoresistor is connected to a first terminal of the first soft connection female snap fastener terminal row, the other end of the first piezoresistor is connected to one end of the second piezoresistor, the other end of the second piezoresistor is connected to one end of the third piezoresistor, and the other end of the third piezoresistor is connected to a second terminal of the first soft connection female snap fastener terminal row; one end of the fourth piezoresistor is connected with a third terminal of the first soft connection female snap fastener terminal row, the other end of the fourth piezoresistor is connected with one end of the fifth piezoresistor, the other end of the fifth piezoresistor is connected with one end of the sixth piezoresistor, and the other end of the sixth piezoresistor is connected with the second terminal.
In the above cable surface magnetic leakage and mechanical wave composite fault detection alarm system, in a preferred mode, the piezoresistor wiring leading-out tail band comprises a second rectangular nylon soft band, a third soft connection female snap fastener terminal row arranged at the bottom of the second rectangular nylon soft band and a fourth soft connection female snap fastener terminal row arranged at the side of the second rectangular nylon soft band; one end of the second rectangular nylon soft belt is uniformly and longitudinally linearly provided with a seventh piezoresistor, an eighth piezoresistor and a ninth piezoresistor; the other end of the second rectangular nylon soft belt is uniformly and longitudinally linearly provided with a tenth piezoresistor, an eleventh piezoresistor and a twelfth piezoresistor; one end of the seventh piezoresistor is connected to a fourth terminal of the third soft connection female snap fastener terminal row, the other end of the seventh piezoresistor is connected to one end of the eighth piezoresistor, the other end of the eighth piezoresistor is connected to one end of the ninth piezoresistor, and the other end of the ninth piezoresistor is connected to a fifth terminal of the third soft connection female snap fastener terminal row; one end of the tenth piezoresistor is connected to a sixth terminal of the third soft connection female snap fastener terminal row, the other end of the tenth piezoresistor is connected with one end of the eleventh piezoresistor, the other end of the eleventh piezoresistor is connected with one end of the twelfth piezoresistor, and the other end of the twelfth piezoresistor is connected with a fifth terminal.
In the above cable surface magnetic leakage and mechanical wave composite fault detection alarm system, preferably, the solenoid winding belt comprises a parallelogram nylon Long Ruan belt and a plurality of wires uniformly arranged inside the parallelogram nylon soft belt; the leads are parallel to each other and parallel to the upper edge line and the lower edge line of the parallelogram nylon soft belt; one end of a first wire at the uppermost part of the plurality of wires is connected with a seventh terminal of the first soft connection female snap fastener terminal row; one end of the last wire at the lowest part of the wires is connected with an eighth terminal of the third soft connection female snap fastener terminal row; and the two ends of the rest of the wires are respectively connected with the terminals of the second soft connecting female snap fastener terminal row and the terminals of the fourth soft connecting female snap fastener terminal row one by one.
In the above cable surface magnetic leakage and mechanical wave composite fault detection alarm system, in a preferred mode, the solenoid connection belt comprises an insulation wire belt, a fifth soft connection male snap fastener terminal row and a sixth soft connection male snap fastener terminal row which are respectively arranged at two ends of the insulation wire belt; a plurality of parallel wires are arranged inside the solenoid connecting belt; wherein the parallel wires arranged inside the solenoid connecting belt are one less than the wires inside the solenoid winding belt; two ends of the parallel wires are connected with the wiring terminals of the fifth soft connection male snap fastener terminal row and the sixth soft connection male snap fastener terminal row one by one; the fifth soft connection male snap fastener terminal row is connected with the second soft connection female snap fastener terminal row, and the sixth soft connection male snap fastener terminal row is connected with the fourth soft connection female snap fastener terminal row.
In the above cable surface magnetic leakage and mechanical wave composite fault detection alarm system, in a preferred mode, the alarm bell light field fault indicator comprises a current limiting resistor, an alarm lamp and an alarm bell; one end of the current limiting resistor is connected with a seventh terminal on the first soft connection female snap fastener terminal strip, and the other end of the current limiting resistor is connected with one end of the warning lamp; the other end of the alarm lamp is connected with one end of the alarm bell, and the other end of the alarm bell is connected with an eighth terminal on the third flexible connection female head snap fastener terminal row.
In the above cable surface magnetic leakage and mechanical wave composite fault detection alarm system, in a preferred mode, the single chip microcomputer measurement communication module comprises a single chip microcomputer, a standard voltage source, a 485 wireless communication module, a power supply module, a seventh wiring terminal row and a plurality of sampling voltage dividing resistors; the single chip microcomputer, the standard voltage source and the 485 wireless communication module are powered by the power module, and standard voltage signal output of the standard voltage source is connected to an AD0 terminal pin of the single chip microcomputer.
The serial port of the singlechip is connected with the serial port of the 485 wireless communication module, and an eleventh terminal, a twelfth terminal, a thirteenth terminal and a seventeenth terminal on the seventh wiring terminal row are respectively connected with a first terminal, a second terminal, a third terminal and a seventh terminal on the first soft connection female head snap fastener terminal row in a one-to-one correspondence manner; a fourteenth terminal, a fifteenth terminal, a sixteenth terminal and an eighteenth terminal on the seventh wiring terminal row are respectively connected with a fourth terminal, a fifth terminal, a sixth terminal and an eighth terminal on the third soft connection female snap fastener terminal row in a one-to-one correspondence manner; one end of a fourteenth voltage dividing resistor is connected to the thirteenth terminal, and the other end of the fourteenth voltage dividing resistor is connected to the fifteenth voltage dividing resistor; the other end of the fourteenth voltage dividing resistor is also connected with an AD3 terminal pin of the singlechip, and the other end of the fifteenth voltage dividing resistor is connected with an IO1 terminal pin of the singlechip; one end of a sixteenth voltage dividing resistor is connected to an eleventh terminal on the seventh connecting terminal block, the other end of the sixteenth voltage dividing resistor is connected to one end of a seventeenth voltage dividing resistor, and the other end of the sixteenth voltage dividing resistor is also connected to an AD2 terminal pin of the singlechip; the other end of the seventeenth voltage dividing resistor is connected with an IO2 terminal pin of the singlechip; one end of an eighteenth voltage dividing resistor is connected with a fourteenth terminal on the seventh wiring terminal block, and the other end of the eighteenth voltage dividing resistor is connected with one end of a nineteenth voltage dividing resistor; the other end of the eighteenth voltage dividing resistor is also connected with an AD4 terminal pin of the singlechip, and the other end of the nineteenth voltage dividing resistor is connected with an IO3 terminal pin of the singlechip; one end of a twentieth voltage dividing resistor is connected with a sixteenth terminal on the seventh connecting terminal block, the other end of the twentieth voltage dividing resistor is connected with one end of a twentieth voltage dividing resistor, the other end of the twentieth voltage dividing resistor is also connected with an AD5 terminal pin of the singlechip, and the other end of the twentieth voltage dividing resistor is connected with an IO4 terminal pin of the singlechip; one end of the twenty-second voltage dividing resistor is connected with a seventeenth terminal on the seventh connecting terminal block; the other end of the twenty-third voltage dividing resistor is connected with one end of the twenty-third voltage dividing resistor, the other end of the twenty-third voltage dividing resistor is also connected with the AD1 terminal of the singlechip, and the other end of the twenty-third voltage dividing resistor is connected with the eighteenth terminal on the seventh wiring terminal row.
The Vcc terminal on the seventh wiring terminal row is simultaneously connected with the positive electrode of the power supply module, the Vcc terminal of the singlechip, the power supply pin of the standard voltage source, the power supply pin of the 485 wireless communication module, and the fifteenth terminal and the twelfth terminal on the seventh wiring terminal row; and the Gnd terminal of the seventh wiring terminal block is connected with the grounding pin of the standard voltage source, the grounding pin of the 485 wireless communication module and an eighteenth terminal on the seventh wiring terminal block.
According to the cable surface magnetic leakage and mechanical wave composite fault detection alarm system, in a preferred mode, the upper and lower ends of the piezoresistor wiring leading-out head belt and the piezoresistor wiring leading-out tail belt are provided with the detachable connecting devices.
According to the cable surface magnetic leakage and mechanical wave composite fault detection alarm system, in a preferred mode, the detachable connecting device is an elastic hook and an elastic hanging lug.
The invention can rapidly and reliably detect the occurrence of cable faults and timely carry out local and remote alarms, and can rapidly detect and give out fault positions for cable faults far away from the installation position of the device.
Drawings
FIG. 1 is a schematic representation of the propagation of a mechanical wave and the detection of the present invention with a fault source to the left of the present invention;
FIG. 2 is a schematic representation of the propagation of a mechanical wave and the detection of the present invention with a fault source located inside a cable joint at the installation of the present invention;
FIG. 3 is a schematic representation of the propagation of a mechanical wave and the detection of the present invention with a fault source on the right side of the present invention;
FIG. 4 is a schematic illustration of the solenoid structure and connections of the present invention;
FIG. 5 is a schematic view of the overall structure of the present invention;
fig. 6 is an internal circuit diagram of the single chip microcomputer measurement communication module in the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 5 and 6, the cable surface magnetic leakage and mechanical wave composite fault detection alarm system comprises a solenoid winding belt 3 which is seamlessly wound on the outer surface of a cable joint, and a piezoresistor wiring lead-out head belt 1 and a piezoresistor wiring lead-out tail belt 2 which are connected to two ends of the solenoid winding belt 3.
A wire is arranged in the solenoid winding belt 3, and a solenoid which is completely wound on the outer side of the cable is formed by a solenoid connecting belt 4 connected to the other sides of the piezoresistor wiring lead-out head belt 1 and the piezoresistor wiring lead-out tail belt 2; the two ends of the solenoid are connected with the wiring terminal of the alarm bell light on-site fault indicator 5 through wires.
The piezoresistor wiring lead-out head belt 1 and the piezoresistor wiring lead-out tail belt 2 are provided with a plurality of piezoresistors; the piezoresistors are connected with the singlechip measurement communication module 6 through wires and send pressure signals to the singlechip measurement communication module 6; the number of the piezoresistors is any even number of more than two, and the piezoresistor wiring lead-out head band 1 and the piezoresistor wiring lead-out tail band 2 are arranged.
The alarm bell light field fault indicator 5 is connected with the singlechip measurement communication module 6 through a wire, and the singlechip measurement communication module 6 sends an alarm execution signal to the alarm bell light field fault indicator 5.
The piezoresistor wiring lead-out head band 1 comprises a first rectangular nylon soft band, a first soft connection female snap fastener terminal row J1 arranged at the top of the first rectangular nylon soft band and a second soft connection female snap fastener terminal row J2 arranged at the side of the first rectangular nylon soft band; one end of the first rectangular nylon soft belt is uniformly and longitudinally linearly provided with a first piezoresistor R1, a second piezoresistor R2 and a third piezoresistor R3; the other end of the first rectangular nylon soft belt is uniformly and longitudinally linearly provided with a fourth piezoresistor R4, a fifth piezoresistor R5 and a sixth piezoresistor R6; one end of the first piezoresistor R1 is connected to a first terminal Y1 of the first soft connection female snap fastener terminal row J1, the other end of the first piezoresistor R1 is connected to one end of the second piezoresistor R2, the other end of the second piezoresistor R2 is connected to one end of the third piezoresistor R3, and the other end of the third piezoresistor R3 is connected to a second terminal Y2 of the first soft connection female snap fastener terminal row J1; one end of the fourth piezoresistor R4 is connected with a third terminal Y3 of the first soft connection female snap fastener terminal row J1, the other end of the fourth piezoresistor R4 is connected with one end of the fifth piezoresistor R5, the other end of the fifth piezoresistor R5 is connected with one end of the sixth piezoresistor R6, and the other end of the sixth piezoresistor R6 is connected with a second terminal Y2.
The piezoresistor wiring leading-out tail belt 2 comprises a second rectangular nylon soft belt, a third soft connecting female snap fastener terminal row J3 arranged at the bottom of the second rectangular nylon soft belt and a fourth soft connecting female snap fastener terminal row J4 arranged at the side of the second rectangular nylon soft belt; one end of the second rectangular nylon soft belt is uniformly and longitudinally linearly provided with a seventh piezoresistor R7, an eighth piezoresistor R8 and a ninth piezoresistor R9; the other end of the second rectangular nylon soft belt is uniformly and longitudinally and linearly provided with a tenth piezoresistor R10, an eleventh piezoresistor R11 and a twelfth piezoresistor R12; one end of the seventh piezoresistor R7 is connected to a fourth terminal Y4 of the third soft connection female snap fastener terminal row J3, the other end of the seventh piezoresistor R7 is connected to one end of the eighth piezoresistor R8, the other end of the eighth piezoresistor R8 is connected to one end of the ninth piezoresistor R9, and the other end of the ninth piezoresistor R9 is connected to a fifth terminal Y5 of the third soft connection female snap fastener terminal row J3; one end of the tenth piezoresistor R10 is connected to a sixth terminal Y6 of the third flexible connection female snap fastener terminal row J3, the other end of the tenth piezoresistor R10 is connected to one end of the eleventh piezoresistor R11, the other end of the eleventh piezoresistor R11 is connected to one end of the twelfth piezoresistor R12, and the other end of the twelfth piezoresistor R12 is connected to a fifth terminal Y5.
The solenoid winding belt 3 is clamped between the piezoresistor wiring leading-out head belt 1 and the piezoresistor wiring leading-out tail belt 2; the solenoid winding belt 3 comprises a parallelogram nylon Long Ruan belt and a plurality of wires uniformly arranged inside the parallelogram nylon soft belt; the leads are parallel to each other and parallel to the upper edge line and the lower edge line of the parallelogram nylon soft belt; one end of a first wire at the uppermost part of the plurality of wires is connected with a seventh terminal L of the first soft connection female snap fastener terminal row J1; one end of the last wire at the lowest part of the wires is connected with an eighth terminal N of the third soft connection female snap fastener terminal row J3; and the two ends of the rest of the wires are respectively connected with the terminals of the second soft connecting female snap fastener terminal row J2 and the terminals of the fourth soft connecting female snap fastener terminal row J4 one by one.
The solenoid connecting belt 4 comprises an insulating wire belt, a fifth soft connecting male snap fastener terminal row J5 and a sixth soft connecting male snap fastener terminal row J6 which are respectively arranged at two ends of the insulating wire belt; a plurality of parallel wires are arranged inside the solenoid connecting belt 4; wherein the parallel wires arranged inside the solenoid connecting belt 4 are one less than the wires inside the solenoid winding belt 3; two ends of the parallel wires are connected with the wiring terminals of the fifth soft connection male snap fastener terminal row J5 and the sixth soft connection male snap fastener terminal row J6 one by one; the fifth soft connection male snap fastener terminal row J5 is connected with the second soft connection female snap fastener terminal row J2, and the sixth soft connection male snap fastener terminal row J6 is connected with the fourth soft connection female snap fastener terminal row J4.
The alarm light on-site fault indicator 5 comprises a current limiting resistor R13, an alarm lamp BJ1 and an alarm bell BJ2; one end of the current limiting resistor R13 is connected with a seventh terminal L on the first soft connection female snap fastener terminal row J1, and the other end of the current limiting resistor R is connected with one end of the warning lamp BJ 1; the other end of the alarm lamp BJ1 is connected with one end of the alarm bell BJ2, and the other end of the alarm bell BJ2 is connected with an eighth terminal N on the third soft connection female snap fastener terminal row J3.
As shown in fig. 5 and 6, the single chip microcomputer measurement communication module 6 includes a single chip microcomputer IC1, a standard voltage source IC2, a 485 wireless communication module IC3, a power module P1, a seventh connection terminal row J7, and a plurality of sampling voltage dividing resistors; the singlechip IC1, the standard voltage source IC2 and the 485 wireless communication module IC3 are powered by the power module P1, and standard voltage signal output of the standard voltage source IC2 is connected to an AD0 terminal pin of the singlechip IC 1.
The serial port of the singlechip IC1 is connected with the serial port of the 485 wireless communication module IC3, and an eleventh terminal Y11, a twelfth terminal Y12, a thirteenth terminal Y13 and a seventeenth terminal L2 on the seventh wiring terminal row J7 are respectively connected with a first terminal Y1, a second terminal Y2, a third terminal Y3 and a seventh terminal L on the first soft connection female snap fastener terminal row J1 in a one-to-one correspondence manner; a fourteenth terminal Y14, a fifteenth terminal Y15, a sixteenth terminal Y16, and an eighteenth terminal N2 on the seventh connecting terminal row J7 are respectively connected with a fourth terminal Y4, a fifth terminal Y5, a sixth terminal Y6, and an eighth terminal N on the third soft connection female snap terminal row J3 in one-to-one correspondence; one end of a fourteenth voltage dividing resistor R14 is connected to the thirteenth terminal Y13, and the other end of the fourteenth voltage dividing resistor R14 is connected to a fifteenth voltage dividing resistor R15; the other end of the fourteenth voltage dividing resistor is also connected with an AD3 terminal pin of the singlechip IC1, and the other end of the fifteenth voltage dividing resistor R15 is connected with an IO1 terminal pin of the singlechip IC 1; one end of a sixteenth voltage dividing resistor R16 is connected to an eleventh terminal Y11 on the seventh wiring terminal block J7, the other end of the sixteenth voltage dividing resistor R16 is connected to one end of a seventeenth voltage dividing resistor R17, and the other end of the sixteenth voltage dividing resistor R16 is also connected to an AD2 terminal pin of the singlechip IC 1; the other end of the seventeenth voltage dividing resistor R17 is connected with an IO2 terminal pin of the singlechip IC 1; one end of an eighteenth voltage dividing resistor R18 is connected with a fourteenth terminal Y14 on the seventh wiring terminal block J7, and the other end of the eighteenth voltage dividing resistor R18 is connected with one end of a nineteenth voltage dividing resistor R19; the other end of the eighteenth voltage dividing resistor R18 is also connected with an AD4 terminal pin of the singlechip IC1, and the other end of the nineteenth voltage dividing resistor R19 is connected with an IO3 terminal pin of the singlechip IC 1; one end of a twentieth voltage dividing resistor R20 is connected with a sixteenth terminal Y16 on the seventh wiring terminal block J7, the other end of the twentieth voltage dividing resistor R20 is connected with one end of a twentieth first voltage dividing resistor R21, the other end of the twentieth voltage dividing resistor R20 is also connected with an AD5 terminal pin of the singlechip IC1, and the other end of the twentieth first voltage dividing resistor R21 is connected with an IO4 terminal pin of the singlechip IC 1; one end of the twenty-second voltage-dividing resistor R22 is connected with a seventeenth terminal L2 on the seventh wiring terminal block J7; the other end of the twenty-third voltage dividing resistor R22 is connected to one end of a twenty-third voltage dividing resistor R23, the other end of the twenty-third voltage dividing resistor R22 is also connected to the AD1 terminal of the single chip IC1, and the other end of the twenty-third voltage dividing resistor R23 is connected to the eighteenth terminal N2 on the seventh wiring terminal row J7.
The Vcc terminal on the seventh wiring terminal row J7 is simultaneously connected to the positive electrode of the power module P1, the Vcc terminal of the single chip IC1, the power pin of the standard voltage source IC2, the power pin of the 485 wireless communication module IC3, and the fifteenth terminal Y15 and the twelfth terminal Y12 on the seventh wiring terminal row J7; the Gnd terminal of the seventh wiring terminal block J7 is connected to the ground pin of the standard voltage source IC2, the ground pin of the 485 wireless communication module IC3, and the eighteenth terminal N2 on the seventh wiring terminal block J7.
As shown in fig. 5 and 6, the present invention is composed of 6 parts: the voltage dependent resistor wiring leading-out head belt 1, the voltage dependent resistor wiring leading-out tail belt 2, the solenoid winding belt 3, the solenoid connecting belt 4, the alarm bell light field fault indicator 5 and the singlechip measuring communication module 6.
The varistor wiring leading-out headband 1 and the varistor wiring leading-out tail band 2 are fixedly connected together through the solenoid winding band 3, and when the directions of the varistor wiring leading-out headband 1, the solenoid winding band 3 and the varistor wiring leading-out tail band 2 are sequentially flattened, the varistor wiring leading-out headband 1 and the varistor wiring leading-out tail band 2 are rectangular, the solenoid winding band 3 is parallelogram, and the upper edge line and the lower edge line of the solenoid winding band 3 form an angle of 45 degrees with the longitudinal edge lines of the varistor wiring leading-out headband 1 and the varistor wiring leading-out tail band 2.
When the voltage-dependent resistor wire leading-out head belt 1 is installed on site, the voltage-dependent resistor wire leading-out tail belt 2 is wound on the other end of the cable joint in the axial direction of the cable, the solenoid winding belt 3 is wound on the outer surface of the cable joint in a seamless manner, and two ends of the solenoid connecting belt 4 are respectively connected to the voltage-dependent resistor wire leading-out head belt 1 and the voltage-dependent resistor wire leading-out tail belt 2; the solenoid winding belt 3 and the solenoid connecting belt 4 form a complete solenoid pipe sleeve on the cable connector, the alarm bell light field fault indicator 5 is connected to two ends of a solenoid outgoing line formed by the solenoid winding belt 3 and the solenoid connecting belt 4, and the singlechip measuring communication module 6 is connected to the piezoresistor wiring lead-out head belt 1 and the piezoresistor wiring lead-out tail belt 2.
The piezoresistor wiring leading-out head band 1 also comprises an elastic hook and an elastic hanging lug. The first soft connecting female snap fastener terminal row J1, the second soft connecting female snap fastener terminal row J2, the piezoresistor, the elastic hook and the elastic hanging lug are fixedly arranged on the first rectangular nylon soft belt to form a whole. The first piezoresistor R1, the second piezoresistor R2 and the third piezoresistor R3 are connected in series, are uniformly and longitudinally arranged in a straight line along the left side of the piezoresistor wiring leading-out head band 1, one end of the first piezoresistor is connected to the first terminal Y1 of the first soft connection female snap fastener terminal row J1, and the other end of the first piezoresistor is connected to the second terminal Y2 of the first soft connection female snap fastener terminal row J1.
The fourth piezoresistor R4, the fifth piezoresistor R5 and the sixth piezoresistor R6 are connected in series, are uniformly and longitudinally arranged in a straight line along the right side of the piezoresistor wiring leading-out head band 1, and are connected to the third terminal Y3 of the first soft connection female snap-fastener terminal row J1 at one end and to the second terminal Y2 of the first soft connection female snap-fastener terminal row J1 at the other end.
The number of seventh terminals L of the first soft connecting female snap fastener terminal row J1 is 2, and the seventh terminals L of the first soft connecting female snap fastener terminal row J1 are mutually communicated, one seventh terminal L of the first soft connecting female snap fastener terminal row J1 is connected with a first wire in the solenoid winding belt 3, and the other seventh terminal L of the first soft connecting female snap fastener terminal row J1 is connected with one end of a current limiting resistor R13 of the alarm bell light on-site fault indicator 5. The piezoresistor wiring lead-out head band 1 is fastened on the smooth surface of the left side of the cable connector by an elastic hook and an elastic hanging lug during installation. In this embodiment, the number of terminals of the second soft connection female snap fastener terminal row J2 is 10.
As shown in fig. 5, the varistor wiring leading-out tail band 2 is composed of a second rectangular nylon soft band, a third soft connection female snap fastener terminal row J3, a fourth soft connection female snap fastener terminal row J4, an elastic hook, an elastic hanging lug and the like. Seven piezoresistors R7, eighth piezoresistor R8 and ninth piezoresistor R9 are connected in series, are uniformly and longitudinally arranged in a straight line along the left side of the tail band 2 led out by the piezoresistor wiring, one end of each of the seven piezoresistors is connected to the fourth terminal Y4 of the third soft connection female snap fastener terminal row J3, and the other end of each of the seven piezoresistors is connected to the fifth terminal Y5 of the third soft connection female snap fastener terminal row J3.
The tenth piezoresistor R10, the eleventh piezoresistor R11 and the twelfth piezoresistor R12 are connected in series, are uniformly and longitudinally arranged in a straight line along the right side of the piezoresistor wiring leading-out tail band 2, and are connected with the sixth terminal Y6 of the third soft connection female snap-fastener terminal row J3 at one end and the fifth terminal Y5 of the third soft connection female snap-fastener terminal row J3 at the other end. The eighth terminals N of the third soft connection female snap fastener terminal row J3 are 2 and are mutually communicated, one eighth terminal N of the third soft connection female snap fastener terminal row J3 is connected with the last wire in the solenoid winding belt 3, and the other eighth terminal N of the third soft connection female snap fastener terminal row J3 is connected with one end of the wire and an alarm bell BJ2 of the alarm bell light on-site fault indicator 5. The fourth flexible connection female snap fastener terminal strip J4 is connected one by one with other wires in the solenoid winding tape 3. The tail band 2 is fastened on the smooth surface of the right side of the cable joint by an elastic hook and an elastic hanging lug during installation. In this embodiment, the number of terminals of the fourth flexible connection female snap fastener terminal row J4 is 10.
As shown in fig. 5, the solenoid winding belt 3 is composed of a parallelogram nylon Long Ruan belt and a plurality of wires, wherein the parallelogram nylon Long Ruan belt is integrally woven with a rectangular nylon soft belt of the piezoresistor wiring lead-out head belt 1 and the piezoresistor wiring lead-out tail belt 2, the wires are parallel to the upper edge line and the lower edge line of the parallelogram nylon soft belt, and are uniformly arranged inside the parallelogram nylon soft belt and insulated from the outside; one end of a first wire at the upper part of the voltage-dependent resistor wiring lead-out head band is connected with a seventh terminal L in a first soft connection female snap-fastener terminal row J1 of the voltage-dependent resistor wiring lead-out head band 1, one end of a last wire at the lower part of the first wire is connected with an eighth terminal N in a third soft connection female snap-fastener terminal row J3 of the voltage-dependent resistor wiring lead-out tail band 2, and two ends of other wires are respectively connected with a second soft connection female snap-fastener terminal row J2 of the voltage-dependent resistor wiring lead-out head band 1 and a fourth soft connection female snap-fastener terminal row J4 of the voltage-dependent resistor wiring lead-out tail band 2 one by one. The number of parallel wires in the solenoid coil 3 of this embodiment is 11.
As shown in fig. 5, the solenoid connection band 4 is composed of an insulated wire band, a fifth soft connection male snap fastener terminal row J5 and a sixth soft connection male snap fastener terminal row J6, the number of wires in the insulated wire band is equal to the number of wires in the solenoid winding band 3 minus 1, two ends of the wires are connected with the fifth soft connection male snap fastener terminal row J5 and the sixth soft connection male snap fastener terminal row J6 one by one, the fifth soft connection male snap fastener terminal row J5 is connected with a second soft connection female snap fastener terminal row J2 in the piezoresistor wiring lead-out headband 1, the sixth soft connection male snap fastener terminal row J6 is connected with a fourth soft connection female snap fastener terminal row J4 in the piezoresistor wiring lead-out tail band 2, and the solenoid connection band 4 and the solenoid winding band 3 form a complete solenoid. The number of wires in this embodiment is equal to 10 in the fifth soft connection male snap terminal row J5 and the sixth soft connection male snap terminal row J6.
As shown in fig. 1 to 3, when a short circuit occurs due to insulation damage of the cable, a large electric force is generated, and a mechanical wave B generated by the electric force propagates along the axial direction of the cable. Wherein r1 and r2 are equivalent resistances of 2 piezoresistor serial ring bands on the piezoresistor wiring lead-out head band 1, and r3 and r4 are equivalent resistances of 2 piezoresistor serial ring bands on the piezoresistor wiring lead-out tail band 2.
In fig. 1, at the position of the fault source a, the mechanical wave B propagates along the axial direction of the cable, t1 to t4 are times when the r1 to r4 detect out of limit amplitude for the first time in the same detection period, the detection period of this embodiment is 0.2 seconds, the frequency of the mechanical wave B can be obtained by calculating the number of the mechanical waves detected in the period by the singlechip, and the mechanical wave generated by the external events such as the passing of the automobile can be distinguished by frequency filtering, so as to reduce the probability of false alarm generated by the device. The singlechip can accurately judge the position of the fault point relative to the installation position of the device by comparing the sizes of t1 to t4, as shown in fig. 1, the time characteristics when the cable fault occurs on the left side are as follows: t1< t2< t3< t4.
Fig. 2 shows the direction of propagation of the mechanical wave B when the source of failure a of the cable occurs inside the joint in the cable where the device is installed, the time characteristic of this time being: t1> t2 and t3< t4.
Fig. 3 shows the propagation direction of the mechanical wave B when the fault source a of the cable is present on the right side of the device, the time characteristic of this is: t1> t2> t3> t4.
As shown in figure 4, when the cable joint in the installation place of the device has insulation damage short circuit fault, the cable joint can have severe electric field intensity change, the strong magnetic field generated by the changed electric field induces higher voltage on the solenoid formed by the solenoid winding belt 3 and the solenoid connecting belt 4, thereby the alarm lamp on the alarm bell lamplight on-site fault indicator 5 is lightened and the alarm bell is started, and meanwhile, the singlechip acquires the voltage mutation to send signals to a remote place. When a short circuit fault occurs in the adjacent cable, the solenoid can also be caused to induce voltage, and the triggering device sends an alarm to a remote place, but the voltage amplitude is much smaller.
The device can be applied to places needing to be monitored mainly, such as joints and cable bent angles in cables, when the device is installed at the cable joints, the piezoresistor wiring lead-out head band 1 is wound at one end of the cable joints in the axial direction of the cable, and is fixed by an elastic hook and an elastic hanging lug, the resistance r1 between a first terminal Y1 and a second terminal Y2 in a first flexible connection female snap fastener terminal row J1 is measured, and the resistance r2 between a third terminal Y3 and the second terminal Y2 is measured and recorded; then the solenoid winding belt 3 is seamlessly wound on the outer surface of the cable joint, and the length of the solenoid winding belt 3 is more than or equal to 1 time of the circumference of the outer surface of the cable, namely the solenoid winding belt 3 can be just wound on the outer surface of the joint in the cable for 1 circle; and then winding the piezoresistor wiring leading-out tail tape 2 perpendicular to the axial direction of the cable and fixing the same at the other end of the cable connector, measuring the resistance r3 between the fourth terminal Y4 and the fifth terminal Y5 in the third soft connection female snap fastener terminal row J3, measuring the resistance r4 between the sixth terminal Y6 and the fifth terminal Y5, and recording. The fifth soft connection male snap fastener terminal row J5 and the sixth soft connection male snap fastener terminal row J6 at the two ends of the solenoid connecting belt 4 are correspondingly connected to the second soft connection female snap fastener terminal row J2 of the piezoresistor wiring leading-out head belt 1 and the fourth soft connection female snap fastener terminal row J4 of the piezoresistor wiring leading-out tail belt 2 one by one, and the resistance between the seventh terminal L in the first soft connection female snap fastener terminal row J1 of the piezoresistor wiring leading-out head belt 1 and the eighth terminal N in the third soft connection female snap fastener terminal row J3 of the piezoresistor wiring leading-out tail belt 2 is measured to be smaller than 1 ohm; then the alarm bell light on-site fault indicator 5 is connected with a seventh terminal L in a first soft connection female snap fastener terminal row J1 of the piezoresistor wiring leading-out head belt 1 and an eighth terminal N in a third soft connection female snap fastener terminal row J3 of the piezoresistor wiring leading-out tail belt 2; the seventh wiring terminal row J7 of the singlechip measurement communication module 6 is correspondingly connected with the first soft connection female snap-fastener terminal row J1 of the piezoresistor wiring leading-out head belt 1 and the third soft connection female snap-fastener terminal row J3 of the piezoresistor wiring leading-out tail belt 2 through wires; then the power module P1 is connected to a seventh wiring terminal row J7 of the single chip microcomputer measurement communication module 6, the device starts to work, resistance values of r1, r2, r3 and r4 are downloaded to a configuration file of the single chip microcomputer, and the single chip microcomputer judges the occurrence direction of faults by detecting abrupt changes of series piezoresistor values r1, r2, r3 and r4 in the piezoresistor wiring leading-out head band 1 and the piezoresistor wiring leading-out tail band 2; the single chip microcomputer judges the damage condition of the cable joint shielding layer or the damage condition of the adjacent cable shielding layer by detecting the output voltage of the solenoid formed by the solenoid winding belt 3 and the solenoid connecting belt 4, the output voltage of the solenoid is close to 0 during normal operation, the solenoid can instantly output very high voltage when the cable joint shielding layer is damaged, the local alarm lamp can be lightened and the alarm bell can ring, and meanwhile, the single chip microcomputer sends signals to a remote place through the 485 wireless communication module.
The device can quickly and reliably detect the occurrence of the cable fault and timely carry out local and remote alarm, can quickly detect and give out the fault azimuth to the cable fault far away from the installation position of the device, and has the advantages of simple and convenient field installation, reliable work, low energy consumption and strong adaptability.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should be covered by the protection scope of the present invention by making equivalents and modifications to the technical solution and the inventive concept thereof.
Claims (9)
1. The cable surface magnetic leakage and mechanical wave composite fault detection alarm system is characterized by comprising a solenoid winding belt (3) which is seamlessly wound on the outer surface of a cable joint, and a piezoresistor wiring lead-out head belt (1) and a piezoresistor wiring lead-out tail belt (2) which are connected to two ends of the solenoid winding belt (3);
the solenoid winding belt (3) is internally provided with a wire, and a solenoid connecting belt (4) connected to the other sides of the piezoresistor wiring leading-out head belt (1) and the piezoresistor wiring leading-out tail belt (2) forms a complete solenoid wound on the outer side of the cable; the two ends of the solenoid are connected with the wiring end of an alarm bell light field fault indicator (5) through wires;
The piezoresistor wiring lead-out head band (1) comprises a first rectangular nylon soft band, a first soft connection female snap fastener terminal row (J1) arranged at the top of the first rectangular nylon soft band and a second soft connection female snap fastener terminal row (J2) arranged at the side of the first rectangular nylon soft band; one end of the first rectangular nylon soft belt is uniformly and longitudinally linearly arranged with a first piezoresistor (R1), a second piezoresistor (R2) and a third piezoresistor (R3) which are connected in series; the other end of the first rectangular nylon soft belt is uniformly and longitudinally and linearly arranged with a fourth piezoresistor (R4), a fifth piezoresistor (R5) and a sixth piezoresistor (R6) which are connected in series;
the piezoresistor wiring leading-out tail belt (2) comprises a second rectangular nylon soft belt, a third soft connecting female snap fastener terminal row (J3) arranged at the bottom of the second rectangular nylon soft belt and a fourth soft connecting female snap fastener terminal row (J4) arranged at the side of the second rectangular nylon soft belt; one end of the second rectangular nylon soft belt is uniformly and longitudinally and linearly arranged with a seventh piezoresistor (R7), an eighth piezoresistor (R8) and a ninth piezoresistor (R9) which are connected in series; the other end of the second rectangular nylon soft belt is uniformly and longitudinally and linearly arranged with a tenth piezoresistor (R10), an eleventh piezoresistor (R11) and a twelfth piezoresistor (R12) which are connected in series;
The piezoresistor is connected with the singlechip measurement communication module (6) through a wire and sends a pressure signal to the singlechip measurement communication module (6);
when the cable insulation damage is short-circuited, large electric power is generated, and mechanical waves generated by the electric power can propagate along the axial direction of the cable; t 1-t 4 are equivalent resistances r1 and r2 of 2 piezoresistor serial ring bands on the piezoresistor wiring leading-out head band (1) and equivalent resistances r3 and r4 of 2 piezoresistor serial ring bands on the piezoresistor wiring leading-out tail band (2), and the time of amplitude out-of-limit is detected for the first time in the same detection period;
the time characteristic of the fault source of the cable when appearing on the left side of the cable surface magnetic leakage and mechanical wave composite fault detection alarm system is: t1< t2< t3< t4; the time characteristic when the fault source of the cable appears in the interior of the joint in the cable where the cable surface magnetic leakage and mechanical wave composite fault detection alarm system is installed is as follows: t1> t2 and t3< t4; the time characteristic of the fault source of the cable when appearing on the right side of the cable surface magnetic leakage and mechanical wave composite fault detection alarm system is: t1> t2> t3> t4;
the alarm bell light field fault indicator (5) is connected with the singlechip measurement communication module (6) through a wire, and the singlechip measurement communication module (6) sends an alarm execution signal to the alarm bell light field fault indicator (5);
When the cable surface magnetic leakage and mechanical wave composite fault detection alarm system is installed and the cable is in insulation damage and short circuit fault, the cable damage can be changed in intensity, the strong magnetic field generated by the changed electric field induces higher voltage in the solenoid formed by the solenoid winding belt (3) and the solenoid connecting belt (4), so that the alarm lamp on the alarm bell lamplight field fault indicator (5) is lightened and the alarm bell is started.
2. The cable surface magnetic leakage and mechanical wave composite fault detection alarm system according to claim 1, wherein one end of the first piezoresistor (R1) is connected to a first terminal (Y1) of the first soft connection female snap fastener terminal row (J1), the other end of the first piezoresistor (R1) is connected to one end of the second piezoresistor (R2), the other end of the second piezoresistor (R2) is connected to one end of the third piezoresistor (R3), and the other end of the third piezoresistor (R3) is connected to a second terminal (Y2) of the first soft connection female snap fastener terminal row (J1); one end of the fourth piezoresistor (R4) is connected with a third terminal (Y3) of the first soft connection female snap fastener terminal row (J1), the other end of the fourth piezoresistor (R4) is connected with one end of the fifth piezoresistor (R5), the other end of the fifth piezoresistor (R5) is connected with one end of the sixth piezoresistor (R6), and the other end of the sixth piezoresistor (R6) is connected with a second terminal (Y2).
3. The cable surface magnetic leakage and mechanical wave composite fault detection alarm system according to claim 2, wherein one end of the seventh piezoresistor (R7) is connected to a fourth terminal (Y4) of the third soft connection female snap-fastener terminal row (J3), the other end of the seventh piezoresistor (R7) is connected to one end of the eighth piezoresistor (R8), the other end of the eighth piezoresistor (R8) is connected to one end of the ninth piezoresistor (R9), and the other end of the ninth piezoresistor (R9) is connected to a fifth terminal (Y5) of the third soft connection female snap-fastener terminal row (J3); one end of the tenth piezoresistor (R10) is connected to a sixth terminal (Y6) of the third soft connection female snap fastener terminal row (J3), the other end of the tenth piezoresistor (R10) is connected with one end of the eleventh piezoresistor (R11), the other end of the eleventh piezoresistor (R11) is connected with one end of the twelfth piezoresistor (R12), and the other end of the twelfth piezoresistor (R12) is connected with a fifth terminal (Y5).
4. The cable surface magnetic leakage and mechanical wave composite fault detection alarm system according to claim 3, characterized in that the solenoid winding (3) comprises a parallelogram nylon Long Ruan belt and a plurality of wires uniformly installed inside the parallelogram nylon soft belt; the leads are parallel to each other and parallel to the upper edge line and the lower edge line of the parallelogram nylon soft belt; one end of a first wire at the uppermost part of the plurality of wires is connected with a seventh terminal (L) of the first soft connection female snap fastener terminal row (J1); one end of the last wire at the lowest part of the wires is connected with an eighth terminal (N) of the third soft connection female snap fastener terminal row (J3); the two ends of the rest of the wires are respectively connected with the terminals of the second soft connecting female snap fastener terminal row (J2) and the terminals of the fourth soft connecting female snap fastener terminal row (J4) one by one.
5. The cable surface magnetic leakage and mechanical wave composite fault detection alarm system according to claim 4, wherein the solenoid connection strap (4) comprises an insulated wire strap and a fifth soft connection male snap fastener terminal row (J5) and a sixth soft connection male snap fastener terminal row (J6) respectively arranged at two ends of the insulated wire strap; a plurality of parallel wires are arranged inside the solenoid connecting belt (4); wherein the parallel wires arranged inside the solenoid connecting belt (4) are one less than the wires inside the solenoid winding belt (3); two ends of the parallel wires are connected with wiring terminals of the fifth soft connection male snap fastener terminal row (J5) and the sixth soft connection male snap fastener terminal row (J6) one by one; the fifth soft connection male snap fastener terminal row (J5) is connected with the second soft connection female snap fastener terminal row (J2), and the sixth soft connection male snap fastener terminal row (J6) is connected with the fourth soft connection female snap fastener terminal row (J4).
6. The cable surface magnetic leakage and mechanical wave composite fault detection alarm system according to claim 5, wherein the alarm bell light field fault indicator (5) comprises a current limiting resistor (R13), a warning lamp (BJ 1) and an alarm bell (BJ 2); one end of the current limiting resistor (R13) is connected with a seventh terminal (L) on the first soft connection female snap fastener terminal row (J1), and the other end of the current limiting resistor is connected with one end of the warning lamp (BJ 1); the other end of the alarm lamp (BJ 1) is connected with one end of the alarm bell (BJ 2), and the other end of the alarm bell (BJ 2) is connected to an eighth terminal (N) on the third soft connection female snap fastener terminal row (J3).
7. The cable surface magnetic leakage and mechanical wave composite fault detection alarm system according to claim 6, wherein the single chip microcomputer measurement communication module (6) comprises a single chip microcomputer (IC 1), a standard voltage source (IC 2), a 485 wireless communication module (IC 3), a power supply module (P1), a seventh wiring terminal block (J7) and a plurality of sampling voltage dividing resistors; the singlechip (IC 1), the standard voltage source (IC 2) and the 485 wireless communication module (IC 3) are powered by the power module (P1), and the standard voltage signal output of the standard voltage source (IC 2) is connected to an AD0 terminal pin of the singlechip (IC 1);
the serial port of the singlechip (IC 1) is connected with the serial port of the 485 wireless communication module (IC 3), and an eleventh terminal (Y11), a twelfth terminal (Y12), a thirteenth terminal (Y13) and a seventeenth terminal (L2) on the seventh wiring terminal row (J7) are respectively connected with a first terminal (Y1), a second terminal (Y2), a third terminal (Y3) and a seventh terminal (L) on the first soft connection female snap fastener terminal row (J1) in a one-to-one correspondence manner; a fourteenth terminal (Y14), a fifteenth terminal (Y15), a sixteenth terminal (Y16) and an eighteenth terminal (N2) on the seventh wiring terminal block (J7) are respectively connected with a fourth terminal (Y4), a fifth terminal (Y5), a sixth terminal (Y6) and an eighth terminal (N) on the third soft connection female snap fastener terminal block (J3) in a one-to-one correspondence manner; one end of a fourteenth voltage dividing resistor (R14) is connected to the thirteenth terminal (Y13), and the other end of the fourteenth voltage dividing resistor (R14) is connected to a fifteenth voltage dividing resistor (R15); the other end of the fourteenth voltage dividing resistor is also connected with an AD3 terminal pin of the singlechip (IC 1), and the other end of the fifteenth voltage dividing resistor (R15) is connected with an IO1 terminal pin of the singlechip (IC 1); one end of a sixteenth voltage dividing resistor (R16) is connected to an eleventh terminal (Y11) on the seventh wiring terminal block (J7), the other end of the sixteenth voltage dividing resistor (R16) is connected to one end of a seventeenth voltage dividing resistor (R17), and the other end of the sixteenth voltage dividing resistor (R16) is also connected to an AD2 terminal pin of the singlechip (IC 1); the other end of the seventeenth voltage dividing resistor (R17) is connected with an IO2 terminal pin of the singlechip (IC 1); one end of an eighteenth voltage dividing resistor (R18) is connected with a fourteenth terminal (Y14) on the seventh wiring terminal block (J7), and the other end of the eighteenth voltage dividing resistor (R18) is connected with one end of a nineteenth voltage dividing resistor (R19); the other end of the eighteenth voltage dividing resistor (R18) is also connected with an AD4 terminal pin of the singlechip (IC 1), and the other end of the nineteenth voltage dividing resistor (R19) is connected with an IO3 terminal pin of the singlechip (IC 1); one end of a twentieth voltage dividing resistor (R20) is connected with a sixteenth terminal (Y16) on the seventh wiring terminal block (J7), the other end of the twentieth voltage dividing resistor (R20) is connected with one end of a twentieth first voltage dividing resistor (R21), the other end of the twentieth voltage dividing resistor (R20) is also connected with an AD5 terminal pin of the singlechip (IC 1), and the other end of the twentieth first voltage dividing resistor (R21) is connected with an IO4 terminal pin of the singlechip (IC 1); one end of a twenty-second voltage-dividing resistor (R22) is connected with a seventeenth terminal (L2) on the seventh wiring terminal row (J7); the other end of the twenty-third voltage dividing resistor (R22) is connected with one end of a twenty-third voltage dividing resistor (R23), the other end of the twenty-third voltage dividing resistor (R22) is also connected with an AD1 terminal of the singlechip (IC 1), and the other end of the twenty-third voltage dividing resistor (R23) is connected with an eighteenth terminal (N2) on the seventh wiring terminal row (J7);
The Vcc terminal on the seventh wiring terminal row (J7) is simultaneously connected with the positive electrode of the power supply module (P1), the Vcc terminal of the singlechip (IC 1), the power supply pin of the standard voltage source (IC 2), the power supply pin of the 485 wireless communication module (IC 3), and the fifteenth terminal (Y15) and the twelfth terminal (Y12) on the seventh wiring terminal row (J7); the Gnd terminal of the seventh wiring terminal block (J7) is connected with the grounding pin of the standard voltage source (IC 2), the grounding pin of the 485 wireless communication module (IC 3) and the eighteenth terminal (N2) on the seventh wiring terminal block (J7).
8. The cable surface magnetic leakage and mechanical wave composite fault detection alarm system according to any one of claims 1-7, wherein detachable connecting devices are arranged at the upper end and the lower end of the piezoresistor wiring leading-out head belt (1) and the piezoresistor wiring leading-out tail belt (2).
9. The system of claim 8, wherein the detachable connection device is an elastic hook and an elastic hanging ear.
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