Cable fault early warning and positioning system

Abstract

The utility model relates to the technical field of cable fault detection, in particular to a cable fault early warning and positioning system, which comprises a monitoring end and a plurality of node monitoring ends, and the node monitoring ends are respectively connected with the monitoring end. The node monitoring end comprises a sensor group and a self-adaptive transmission module, and the self-adaptive transmission module is connected with the sensor group and the monitoring end; when the data collected by the sensor group is judged to be abnormal data, the self-adaptive transmission module sends a control signal to a monitoring end and improves the frequency of transmitting the data of the sensor group; the monitoring end comprises a controller and a positioning alarm module. The controller is connected with the positioning alarm module and the plurality of node monitoring ends. And after receiving the control signal transmitted by the node monitoring end, the controller outputs positioning data to the positioning alarm module, and the positioning alarm module analyzes the positioning data and gives an alarm. According to the utility model, the technical problem that a traditional cable fault monitor cannot monitor cable faults in real time and cannot position the fault range is solved.

Description

Technical Field

[0001] This utility model relates to the field of cable fault detection technology, and more specifically, to a cable fault early warning and location system. Background Technology

[0002] Cables are essential components for transmitting electrical energy or information. They are typically composed of one or more insulated conductors, encased in an insulation and protective layer for safety. Power cables play a crucial role in transmitting and distributing electrical energy in numerous scenarios, including urban power grids, industrial plants, power plants, and substations. However, in these applications, cables can fail due to various reasons, such as insulation damage, joint failures, or overload operation. When a cable experiences a short circuit or overload, it generates a large amount of heat. If this heat accumulates to a certain level, it can cause the cable sheath to ignite due to high temperatures, potentially leading to a fire.

[0003] In traditional technologies, cable fault detection typically employs various methods, including but not limited to the use of specialized cable fault detectors. These detectors usually locate the fault point by injecting specific test signals into the cable and monitoring the reflection or changes in these signals. However, traditional cable fault detectors often require a power outage or interruption of normal cable operation to perform fault detection. If a fault suddenly occurs during cable use and is not detected and addressed in a timely manner, the fault area may expand, leading to increased losses. Therefore, real-time monitoring of cables, locating the fault location when it occurs, and promptly notifying personnel are crucial for ensuring the stable operation of cable systems and timely fault repair.

[0004] A Chinese utility model patent, titled "A Cloud Early Warning System for Cable Manufacturing Defects and Faults" (publication number CN212675076U), includes multiple cable sensing nodes, a first transmission module, a data aggregation module, a cloud service storage module, a second transmission module, and a data analysis module. In this utility model patent, the multiple cable sensing nodes sequentially transmit data to the data analysis module through the first transmission module, data aggregation module, cloud service storage module, and second transmission module. The data analysis module analyzes and determines whether a cable fault has occurred and notifies personnel based on the determination result. However, the multi-level transmission path in this patent may lead to data transmission delays, affecting real-time performance. Furthermore, the data analysis module lacks specific fault location functionality, requiring personnel to spend more time locating the fault point. Utility Model Content

[0005] The purpose of this application is to provide a cable fault early warning and location system, which solves the technical problem that traditional cable fault monitors cannot monitor cable faults in real time and locate the fault range.

[0006] To solve the above-mentioned technical problems, the solution adopted in this application is as follows:

[0007] This utility model provides a cable fault early warning and location system, including a monitoring terminal and multiple node monitoring terminals, wherein the multiple node monitoring terminals are distributed at various cable connection points, and each node monitoring terminal is connected to the monitoring terminal; the node monitoring terminal includes a sensor group and an adaptive transmission module, and the adaptive transmission module is connected to the sensor group and the monitoring terminal respectively.

[0008] The adaptive transmission module transmits the data collected by the sensor group to the monitoring terminal at a preset frequency; when the adaptive transmission module determines that the data collected by the sensor group is abnormal, the adaptive module sends a control signal to the monitoring terminal and increases the frequency of transmitting the sensor group data.

[0009] The monitoring terminal includes a controller and a positioning alarm module. The controller is connected to the positioning alarm module and multiple node monitoring terminals respectively. After receiving the control signal transmitted by the node monitoring terminals, the controller outputs positioning data to the positioning alarm module, and the positioning alarm module parses the positioning data and issues an alarm.

[0010] In some embodiments, the adaptive transmission module includes a judgment control circuit, a switching component, a first main control chip, and a first communication chip. The judgment control circuit is connected to the sensor group, the switching component, and the first main control chip, respectively. The switching component is connected to the sensor group. The first main control chip is connected to the first communication chip.

[0011] The first main control chip transmits control signals to the judgment control circuit at a preset frequency. The judgment control circuit outputs control signals to the switching component. The switching component is turned on, and the sensor group transmits data to the first main control chip. The first main control chip transmits the received data to the monitoring terminal through the first communication chip.

[0012] The judgment and control circuit receives the data transmitted by the sensor group in real time and performs anomaly judgment. If an anomaly is judged, it outputs control signals to the switch assembly and the first main control chip respectively. The switch assembly is turned on, and at the same time, the first main control chip sends a control signal to the monitoring terminal through the first communication chip.

[0013] In some embodiments, the judgment control circuit includes a detection circuit and a control circuit. The detection circuit is connected to the sensor group and the input terminal of the control circuit, respectively, and the control circuit is connected to the first main control chip and the switching assembly, respectively.

[0014] In some embodiments, the detection circuit includes a comparator, the input of which is connected to the sensor group, and the output of which is connected to the control circuit.

[0015] In some embodiments, the control circuit includes an OR gate, the input of which is connected to a detection circuit and a second main control chip, and the input of which is connected to a switching assembly and the second main control chip.

[0016] In some embodiments, the switching assembly includes a field-effect transistor (FET), the gate of which is connected to the judgment and control circuit, the drain of which is connected to the sensor group, and the source of which is connected to the first main control chip.

[0017] In some embodiments, the location alarm module includes a sound alarm circuit, a decoding circuit, and multiple light alarm circuits. The sound alarm circuit and the decoding circuit are respectively connected to the controller, and the output terminal of the decoding circuit is respectively connected to the multiple light alarm circuits.

[0018] The decoding circuit receives and parses the positioning data transmitted by the controller, and then outputs a control signal to the corresponding light alarm circuit.

[0019] In some embodiments, the decoding circuit includes a decoder connected to the controller and a plurality of light alarm circuits.

[0020] In some embodiments, the controller includes a second communication chip and a second main control chip, wherein the second main control chip transmits data to multiple node monitoring terminals through the second communication chip; the second main control chip is connected to the positioning alarm module.

[0021] In some embodiments, the sensor group includes a power sensor and a temperature sensor, both of which are located at the cable connection interface.

[0022] The technical solution of this application has at least the following advantages and beneficial effects:

[0023] 1. This utility model includes a monitoring terminal and multiple node monitoring terminals, each node monitoring terminal being connected to the monitoring terminal; the node monitoring terminal continuously monitors the temperature data or power data that cause cable faults, and once any abnormality is detected, the node monitoring terminal immediately sends a control signal to the monitoring terminal so as to promptly notify the staff to take corresponding measures.

[0024] 2. The node monitoring terminal includes a sensor group and an adaptive transmission module. The adaptive transmission module is connected to both the sensor group and the monitoring terminal. The adaptive transmission module transmits the data collected by the sensor group to the monitoring terminal at a preset frequency. When the adaptive transmission module determines that the data collected by the sensor group is abnormal, it sends a control signal to the monitoring terminal and increases the frequency of transmitting the sensor group data. This ensures that the node monitoring terminal can record important data such as temperature or power consumption during cable faults in real time, and at the same time quickly notify the staff to pay attention to the abnormal situation, giving the staff enough time to take measures in advance to effectively prevent or curb the occurrence and spread of the fault.

[0025] 3. The monitoring terminal includes a controller and a location alarm module. The controller is connected to the location alarm module and multiple node monitoring terminals. After receiving control signals transmitted from the node monitoring terminals, the controller outputs location data to the location alarm module, which then parses the location data and issues an alarm. Upon receiving this location data, the location alarm module can quickly parse it and trigger an alarm mechanism to notify personnel. Personnel can then quickly grasp the abnormal situation and, based on the provided location information, rapidly arrive at the scene to troubleshoot or take emergency measures. Attached Figure Description

[0026] Figure 1 This is the overall signal flow diagram of this utility model;

[0027] Figure 2 This is a signal flow diagram of the node monitoring end of this utility model;

[0028] Figure 3 This is a signal flow diagram of the monitoring terminal of this utility model;

[0029] Figure 4 This is a connection diagram of the control circuit and the switching circuit in this embodiment;

[0030] Figure 5 This is a connection diagram of the sound alarm circuit and the decoding circuit in this embodiment;

[0031] Figure 6 This is a circuit diagram of a light alarm system in this embodiment. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. The terms "center," "upper," "lower," "inner," and "outer," indicating orientation or positional relationships based on the orientation or positional relationships shown in the figures, or the orientation or positional relationships commonly used when the product is in use, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as a limitation on this application. It should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] Example 1

[0035] Please refer to Figures 1-6 This utility model provides a cable fault early warning and location system, which is the same as the prior art. It includes a monitoring end and multiple node monitoring ends, which are distributed at each cable connection point and are connected to the monitoring end respectively.

[0036] When a cable experiences a short circuit or overload, the temperature at its connection points rises significantly, and the current inside the cable also increases. Overload operation causes the cable to heat up, leading to a temperature increase; during long-term operation, excessively high ambient temperatures accelerate the aging of the cable insulation layer, potentially causing insulation damage. On the other hand, when a short circuit occurs, the current surges rapidly, causing the cable temperature to rise sharply. If these abnormalities are not addressed promptly, they may lead to more serious failures.

[0037] To prevent cable damage or malfunction due to various factors during long-term operation, this invention installs node monitoring terminals at each cable connection point. These node monitoring terminals continuously monitor temperature or electrical data that could lead to cable failure. Upon detecting any abnormality, the node monitoring terminal immediately sends a control signal to the monitoring terminal to promptly notify personnel to take appropriate measures.

[0038] Unlike existing technologies, the node monitoring terminal includes a sensor group and an adaptive transmission module, with the adaptive transmission module connected to both the sensor group and the monitoring terminal.

[0039] The adaptive transmission module transmits the data collected by the sensor group to the monitoring terminal at a preset frequency; when the adaptive transmission module determines that the data collected by the sensor group is abnormal, the adaptive module sends a control signal to the monitoring terminal and increases the frequency of transmitting the sensor group data.

[0040] In this invention, when the node monitoring terminal determines that the data collected by the sensor group is abnormal, it can quickly send a control signal to the monitoring terminal and immediately increase the frequency of transmitting sensor group data. This means that in critical situations, the system can acquire and process data faster, thereby making a more timely response. At the same time, when abnormal data is detected, the node monitoring terminal can promptly send a control signal to notify the staff to pay attention to the abnormal situation. This plays a role in fault early warning, which helps the staff to take measures in advance to avoid the occurrence or expansion of faults.

[0041] Furthermore, the adaptive transmission module includes a judgment control circuit, a switching component, a first main control chip, and a first communication chip. The judgment control circuit is connected to the sensor group, the switching component, and the first main control chip, respectively. The switching component is connected to the sensor group. The first main control chip is connected to the first communication chip.

[0042] The first main control chip transmits control signals to the judgment control circuit at a preset frequency. The judgment control circuit outputs control signals to the switching component. The switching component is turned on, and the sensor group transmits data to the first main control chip. The first main control chip transmits the received data to the monitoring terminal through the first communication chip.

[0043] The judgment control circuit receives data transmitted by the sensor group in real time and performs anomaly judgment. If an anomaly is detected, it outputs control signals to the switch assembly and the first main control chip respectively. The switch assembly is turned on, and at the same time, the first main control chip sends control signals to the monitoring terminal through the first communication chip.

[0044] It should be noted that the model of the first main control chip is STM32G030F6P6TR; the model of the first communication chip is SIM300C; the connection method between the first main control chip and the first communication chip in this utility model is existing technology and will not be described in detail here.

[0045] In this invention, the judgment control circuit includes a detection circuit and a control circuit. The detection circuit is connected to the sensor group and the input terminal of the control circuit, respectively, and the control circuit is connected to the first main control chip and the switch assembly, respectively.

[0046] Furthermore, the detection circuit includes a comparator, the input of which is connected to the sensor group, and the output of which is connected to the control circuit; the control circuit includes an OR gate, the input of which is connected to the detection circuit and the second main control chip respectively, and the input of which is connected to the switching assembly and the second main control chip respectively.

[0047] It should be noted that the OR gate model is SN74LVC2G32DCTR.

[0048] In this invention, the switching assembly includes a field-effect transistor (FET), the gate of which is connected to a judgment and control circuit, the drain of which is connected to a sensor group, and the source of which is connected to a first main control chip.

[0049] In this embodiment, the switching assembly includes field-effect transistors Q1 and Q2; the judgment control circuit includes comparators U1 and U2, an OR gate U3, resistors R1, R2, R3, R4, R5, and R6, and capacitors C1 and C2.

[0050] The detection circuit includes comparators U1 and U2, resistors R1, R2, R3, R4, R5, and R6, and capacitors C1 and C2; the control circuit includes an OR gate U3.

[0051] Specifically, such as Figure 4 As shown, one end of resistor R1 is connected to the drain of the field-effect transistor Q1, and the T_IN1 input terminal is set here; the other end of resistor R1, one end of capacitor C1, and pin 3 of comparator U1 are connected, and the other end of capacitor C1 is grounded; pin 4 of comparator U1 is connected to the power supply, pin 2 of comparator U1, one end of resistor R2, and one end of resistor R3 are connected, the other end of resistor R2 is connected to the power supply, the other end of resistor R3 is connected to pin 5 of comparator U1 and grounded, and pin 1 of comparator U1 is connected to pin 1 of OR gate U3; one end of resistor R4 is connected to the drain of the field-effect transistor Q2, and the T_IN2 input terminal is set here; the other end of resistor R4, one end of capacitor C2, and pin 3 of comparator U2 are connected, and the capacitor C1 is grounded. The other end of 2 is grounded; pin 4 of comparator U2 is connected to the power supply; pin 2 of comparator U2, one end of resistor R5, and one end of resistor R6 are connected together; the other end of resistor R5 is connected to the power supply; the other end of resistor R6 is connected to pin 5 of comparator U2 and grounded; pin 1 of comparator U2 is connected to pin 2 of OR gate U3; pin 3 of OR gate U3, the gate of field-effect transistor Q1, and the gate of field-effect transistor Q2 are connected together; pin 4 of OR gate U3 is grounded, and pin 8 is connected to the power supply; pin 5 of OR gate U3 is set as the CON_IN input terminal; pins 6 and 7 of OR gate U3 are connected and set as the N_OUT output terminal here; the source of field-effect transistor Q1 is set as the T_OUT1 output terminal, and the source of field-effect transistor Q2 is set as the T_OUT2 output terminal.

[0052] It should be noted that the T_IN1 and T_IN2 input terminals are connected to the sensor group respectively; the T_OUT1 and T_OUT2 output terminals are connected to the PA1 and PA2 pins of the first main control chip respectively; the N_OUT output terminal is connected to the PA0 pin of the first main control chip; and the CON_IN input terminal is connected to the PA7 pin of the first main control chip.

[0053] It should be noted that the jaw type comparator U1 and comparator U2 are both LMV321; the field-effect transistors Q1 and Q2 are both NMOS transistors.

[0054] In this embodiment, the sensor group includes a power sensor and a temperature sensor, both of which are located at the cable connection interface; the analog output terminal of the power sensor and the analog output terminal of the temperature sensor are connected to the input terminals T_IN1 and T_IN2, respectively.

[0055] Specifically, in this embodiment, the power sensor is a current transmitter, model number SL-AI813-K45F; the temperature sensor is model number SGM450.

[0056] In this embodiment, the first main control chip transmits control signals to OR gate U3 at a preset frequency. OR gate U3 outputs control signals to the gates of field-effect transistors Q1 and Q2 respectively. Field-effect transistors Q1 and Q2 are turned on, and the sensor group transmits data to the first main control chip through field-effect transistors Q1 and Q2.

[0057] Comparators U1 and U2 determine in real time whether the data transmitted by the sensor group is abnormal. If at least one of the two comparators determines that abnormal data has occurred, it outputs a high level to OR gate U3. OR gate U3 outputs a control signal to the first main control chip through the N_OUT output terminal. At the same time, pin 3 of OR gate U3 outputs a high level to the gate of field-effect transistor Q1 and the gate of field-effect transistor Q2. At this time, field-effect transistors Q1 and Q2 are turned on, and the sensor group transmits data to the first main control chip through field-effect transistors Q1 and Q2. This ensures that the sensor group collects data in real time and transmits it to the first main control chip in the event of a cable fault. Then, the first main control chip transmits the data to the second main control chip.

[0058] In this utility model, the monitoring terminal includes a controller and a positioning alarm module. The controller is connected to the positioning alarm module and multiple node monitoring terminals respectively. After receiving the control signal transmitted by the node monitoring terminals, the controller outputs positioning data to the positioning alarm module, and the positioning alarm module parses the positioning data and issues an alarm.

[0059] In this invention, the monitoring terminal can quickly receive the control signal transmitted by the node monitoring terminal and immediately output the positioning data; after receiving the positioning data, the positioning alarm module can quickly analyze and trigger the alarm, enabling staff to quickly understand the abnormal situation and arrive at the scene quickly based on the positioning information to troubleshoot or handle emergencies.

[0060] Furthermore, the controller includes a second communication chip and a second main control chip. The second main control chip transmits data to multiple node monitoring terminals through the second communication chip; the second main control chip is connected to the positioning alarm module.

[0061] It should be noted that the model of the second main control chip is STM32F103ZET6; the model of the second communication chip is SIM300C; the connection method of the second main control chip and the second communication chip in this utility model is existing technology and will not be described in detail here.

[0062] Furthermore, the positioning alarm module includes a sound alarm circuit, a decoding circuit, and multiple light alarm circuits. The sound alarm circuit and the decoding circuit are respectively connected to the controller, and the output of the decoding circuit is respectively connected to multiple light alarm circuits.

[0063] It should be explained that the decoding circuit receives the positioning data transmitted by the controller, parses it, and then outputs a control signal to the corresponding light alarm circuit.

[0064] Furthermore, the decoding circuit includes a decoder, which is connected to the second main control chip and multiple light alarm circuits.

[0065] It should be noted that the decoder model is XL74LS138.

[0066] In this embodiment, the sound alarm circuit includes a buzzer BUZ1, a transistor Q3, and a resistor R7; the decoding circuit includes a decoder U4.

[0067] To save pins on the second main control chip, in this embodiment, the input terminal of the sound alarm circuit, the input terminal of the decoding circuit, and the I / O port of the second main control chip are connected together.

[0068] Specifically, the base of transistor Q3 is connected to pin 6 of decoder U4, and the BUZ_IN input terminal is set at this point; the emitter of transistor Q3 is grounded; the collector of transistor Q3, one end of resistor R7, and pin 2 of buzzer BUZ1 are connected; the other end of resistor R7 is connected to pin 1 of buzzer BUZ1 and connected to the power supply; pins 4, 5, and 8 of decoder U4 are connected and grounded; pins 1, 2, and 3 of decoder U4 are set as E_IN1, E_IN2, and E_IN3 input terminals respectively; pins 15, 14, 13, 12, 11, 10, 9, and 7 of decoder U4 are set as LED_OUT0, LED_OUT1, LED_OUT2, LED_OUT3, LED_OUT4, LED_OUT5, LED_OUT6, and LED_OUT7 output terminals respectively.

[0069] It should be noted that transistor Q3 is an NPN type; the BUZ_IN input terminal is connected to the PC4 pin of the second main control chip; the E_IN1, E_IN2, and E_IN3 input terminals are connected to the PB1, PB2, and PB3 pins of the second main control chip, respectively; the LED_OUT0, LED_OUT1, LED_OUT2, LED_OUT3, LED_OUT4, LED_OUT5, LED_OUT6, and LED_OUT7 output terminals are connected to different light alarm circuits.

[0070] In this embodiment, since multiple sets of light alarm circuits are identical, one set of light alarm circuits will be described here. One set of light alarm circuits includes resistor R8, alarm light LED1, and transistor Q4;

[0071] Specifically, the base of transistor Q4 is set as the LED_IN0 input terminal, and the emitter of transistor Q4 is grounded; the collector of transistor Q4, one end of resistor R8, and the cathode of alarm light LED1 are connected together, and the other end of resistor R8 is connected to the anode of alarm light LED1 and connected to the power supply.

[0072] It should be noted that transistor Q4 is an NPN type; the LED_IN0 input terminal is connected to the decoding circuit.

[0073] It should be noted that when the second main control chip receives the control signal from the node monitoring end through the second communication chip, it outputs the control signal to the BUZ_IN input terminal to turn on the buzzer BUZ1 and decoder U4, and at the same time outputs the positioning data to the decoder U4; after the decoder parses the data, it transmits the control signal to the corresponding light alarm circuit.

[0074] It should be explained that the location data includes the node monitoring terminal number that sends the control signal, which makes it easy for the decoder U4 to accurately identify and locate the faulty node monitoring terminal, i.e., the faulty cable connection. After the decoder U4 parses the location data, it transmits the control signal to the corresponding light alarm circuit. The corresponding light alarm circuit is activated, and the corresponding alarm light illuminates, thereby informing the staff of the faulty node monitoring terminal and achieving the location effect.

[0075] In this invention, the monitoring terminal and the multiple node monitoring terminals are all equipped with power modules for providing power. Since the power modules are existing technology, they will not be described in detail here.

[0076] It should be noted that all of the above electronic components can be purchased in domestic and international markets.

[0077] The various embodiments of this utility model have now been described in detail. To avoid obscuring the concept of this utility model, some details known in the art have not been described. Those skilled in the art will fully understand how to implement the technical solution of this utility model based on the above description. The scope of this utility model is defined by the appended claims.

Claims

1. A cable fault early warning and location system, comprising a monitoring terminal and multiple node monitoring terminals, wherein the multiple node monitoring terminals are distributed at various cable connection points, and each node monitoring terminal is connected to the monitoring terminal; characterized in that: The node monitoring terminal includes a sensor group and an adaptive transmission module, and the adaptive transmission module is connected to the sensor group and the monitoring terminal respectively. The adaptive transmission module transmits the data collected by the sensor group to the monitoring terminal at a preset frequency; when the adaptive transmission module determines that the data collected by the sensor group is abnormal, the adaptive module sends a control signal to the monitoring terminal and increases the frequency of transmitting the sensor group data. The monitoring terminal includes a controller and a positioning alarm module. The controller is connected to the positioning alarm module and multiple node monitoring terminals respectively. After receiving the control signal transmitted by the node monitoring terminals, the controller outputs positioning data to the positioning alarm module, and the positioning alarm module parses the positioning data and issues an alarm.

2. The cable fault early warning and location system according to claim 1, characterized in that, The adaptive transmission module includes a judgment control circuit, a switching component, a first main control chip, and a first communication chip. The judgment control circuit is connected to the sensor group, the switching component, and the first main control chip, respectively. The switching component is connected to the sensor group. The first main control chip is connected to the first communication chip. The first main control chip transmits control signals to the judgment control circuit at a preset frequency. The judgment control circuit outputs control signals to the switching component. The switching component is turned on, and the sensor group transmits data to the first main control chip. The first main control chip transmits the received data to the monitoring terminal through the first communication chip. The judgment and control circuit receives the data transmitted by the sensor group in real time and performs anomaly judgment. If an anomaly is judged, it outputs control signals to the switch assembly and the first main control chip respectively. The switch assembly is turned on, and at the same time, the first main control chip sends a control signal to the monitoring terminal through the first communication chip.

3. The cable fault early warning and location system according to claim 2, characterized in that, The judgment control circuit includes a detection circuit and a control circuit. The detection circuit is connected to the sensor group and the input terminal of the control circuit, respectively. The control circuit is connected to the first main control chip and the switch assembly, respectively.

4. The cable fault early warning and location system according to claim 3, characterized in that, The detection circuit includes a comparator, the input of which is connected to the sensor group, and the output of which is connected to the control circuit.

5. The cable fault early warning and location system according to claim 3, characterized in that, The control circuit includes an OR gate, the input of which is connected to the detection circuit and the second main control chip, and the input of which is connected to the switching assembly and the second main control chip.

6. The cable fault early warning and location system according to claim 2, characterized in that, The switching assembly includes a field-effect transistor (FET), the gate of which is connected to the judgment and control circuit, the drain of which is connected to the sensor group, and the source of which is connected to the first main control chip.

7. The cable fault early warning and location system according to claim 1, characterized in that, The positioning alarm module includes a sound alarm circuit, a decoding circuit, and multiple light alarm circuits. The sound alarm circuit and the decoding circuit are respectively connected to the controller, and the output terminal of the decoding circuit is respectively connected to multiple light alarm circuits. The decoding circuit receives and parses the positioning data transmitted by the controller, and then outputs a control signal to the corresponding light alarm circuit.

8. The cable fault early warning and location system according to claim 7, characterized in that, The decoding circuit includes a decoder, which is connected to the controller and multiple light alarm circuits respectively.

9. The cable fault early warning and location system according to claim 1, characterized in that, The controller includes a second communication chip and a second main control chip. The second main control chip transmits data to multiple node monitoring terminals through the second communication chip. The second main control chip is connected to the positioning alarm module.

10. The cable fault early warning and location system according to claim 1, characterized in that, The sensor group includes a power sensor and a temperature sensor, both of which are located at the cable connection interface.

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