Temperature detection device for cable body with voltage class of 10KV and above

Abstract

The invention relates to the technical field of cable temperature detection, and discloses a cable body temperature detection device for a voltage class of 10KV and above, which comprises a temperature measurement belt and a collector, in actual use, the temperature is detected through the temperature measuring probe, then the control unit reads data of the temperature measuring probe and sends the data through the communication unit, and therefore remote detection is achieved, operation is easy and convenient, and cost is low; in addition, the temperature measuring probe is installed on the temperature measuring belt, so that the temperature measuring probe can be installed at a corresponding position according to actual requirements, finally, the temperature measuring belt is directly fixed, installation of the temperature measuring probe is simplified, the temperature measuring belt is taken down during maintenance, then the temperature measuring probe on the temperature measuring belt is replaced and maintained, operation is easy and convenient, and cost is low. And the maintenance difficulty is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of cable temperature detection, and in particular to a cable body temperature detection device for voltage levels of 10KV and above. Background Art

[0002] When the cable is transmitting electric energy, due to the existence of the contact resistance of the cable joint, a large amount of heat will be generated when the transmission current is overloaded, resulting in temperature rise; in addition, affected by the insulation aging of the cable material, when the performance of the insulating material is poor or the manufacturing process is imperfect, the middle joint of the cable is prone to single-phase grounding and phase-to-phase short circuit faults, causing the cable joint to heat up; and the heating of the cable joint will cause the temperature of the cable body to rise, which may cause the insulation layer and protective layer of the cable to smolder. Over time, a large amount of heat and combustible gas will be generated, eventually developing into a fire and a circuit accident.

[0003] In order to ensure the normal operation of the cable, the cable temperature needs to be tested, and the temperature detection mainly includes cable joint temperature detection and cable body temperature detection;

[0004] For cable joint temperature detection, the surface temperature of the cable joint is often measured to monitor the healthy operation status of the cable, timely discover its insulation aging, improve power supply reliability, and reduce or eliminate faults;

[0005] For cable body temperature detection, when local defects, insulation breakdown precursors and accidental fires occur in the cable body or accessory media, they will cause abnormal thermal effects on the cable surface temperature to varying degrees. Temperature detection can prevent faults from occurring in advance.

[0006] At present, common temperature detection methods include infrared imaging and optical fiber temperature measurement, but these two temperature measurement methods are expensive and not conducive to practical use. In addition, the existing temperature detection probe fixing method is complicated. When multi-point detection is required, a probe needs to be installed at each detection point on the cable, which increases the construction workload and subsequent maintenance costs. Summary of the invention

[0007] In view of the shortcomings of the background technology, the present invention provides a cable body temperature detection device for voltage levels of 10KV and above. The technical problem to be solved is that when measuring the cable temperature by infrared imaging or optical fiber temperature measurement, there are problems such as high temperature and complex fixing of the temperature detection probe.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: a cable body temperature detection device for voltage levels of 10KV and above, comprising a temperature measuring tape and a collector, the temperature measuring tape is provided with a groove, and at least one fixing component is installed in the groove along the length direction of the temperature measuring tape, the fixing component comprises at least two supporting plates arranged in parallel along the width direction of the temperature measuring tape, and the side of the supporting plate facing away from the temperature measuring tape is provided with a mounting groove in the direction close to the temperature measuring tape; a temperature measuring probe is installed on at least one fixing component;

[0009] The collector includes a housing and a power supply unit, a control unit, a display unit, a data storage unit and a communication unit located inside the housing;

[0010] The power supply unit provides working voltage to the control unit, display unit, data storage unit and communication unit respectively;

[0011] The control unit is electrically connected to the display unit, the data storage unit, the communication unit and all the temperature measuring probes, respectively, and is used to obtain the temperature measurement data of the temperature measuring probes, display the temperature measurement data on the display unit, store the temperature measurement data in the data storage unit, and send the temperature measurement data to the background server through the communication unit.

[0012] In a certain embodiment, the number of the temperature measuring tapes is greater than or equal to two, and one end of the temperature measuring tape is provided with a plurality of trapezoidal clamping joints along the width direction of the temperature measuring tape, and the other end of the temperature measuring tape is provided with a clamping groove matching the clamping joint along the width direction of the temperature measuring tape, and the clamping joint is clamped in the corresponding clamping groove; the clamping part of every two temperature measuring tapes is also provided with a wire groove.

[0013] In a certain embodiment, the temperature measuring probe is a temperature sensor of model DS18B20. When the number of temperature measuring probes is greater than one, all temperature measuring probes are connected in parallel, and the control unit obtains temperature measurement data from the temperature measuring probes via a bus.

[0014] In a certain embodiment, the process of the control unit acquiring the temperature measurement data of all temperature measurement probes is as follows:

[0015] First, the control unit searches each temperature measuring probe in an automatic broadcasting manner to obtain the communication address of each temperature measuring probe;

[0016] Then the control unit reads the temperature measurement data of each temperature measuring probe according to the acquired communication address. When the temperature measurement data of a certain temperature measuring probe cannot be read, the reading is repeated three times. If the reading is still unsuccessful after three repeated readings, the temperature measuring probe is marked as invalid data, and then the temperature measurement data of the next temperature measuring probe is read until the temperature measurement data of all temperature measuring probes are read.

[0017] Then the control unit processes the temperature measurement data of all the temperature measurement probes, specifically as follows: first, determine whether the temperature corresponding to the temperature measurement data is above zero or below zero, for the temperature measurement data below zero, set the highest byte of the temperature measurement data to a - sign, and for the temperature measurement data above zero, set the highest byte of the temperature measurement data to a + sign; then, for the temperature measurement data between -100 and +100, retain one significant decimal place for the temperature measurement data, and for the temperature measurement data not between -100 and +100, do not retain the decimal place for the temperature measurement data; finally, calculate the average value T1 of all the temperature measurement data;

[0018] Then the maximum temperature measurement data or the minimum temperature measurement data is judged, specifically, whether the difference between the maximum temperature measurement data or the minimum temperature measurement data and the average value T1 exceeds the threshold;

[0019] When judging whether the difference between the maximum temperature measurement data and the average value T1 exceeds the threshold, if it exceeds the threshold, the maximum temperature measurement data can be regarded as invalid data, or the maximum temperature measurement data can be subtracted from other temperature measurement data in sequence to obtain the corresponding difference, and then the average value T2 of all the differences is calculated, and the maximum temperature measurement data is subtracted from the average value T2 to obtain the corrected temperature measurement data, and finally the average value of the corrected temperature measurement data and other temperature measurement data is calculated, and the average value T1 is updated to the average value obtained at the end of this judgment process;

[0020] When judging whether the difference between the minimum temperature measurement data and the average value T1 exceeds the threshold, if it exceeds the threshold, the minimum temperature measurement data can be regarded as invalid data, or the minimum temperature measurement data can be subtracted from other temperature measurement data to obtain the corresponding second difference, and then the average value T3 of all second differences is calculated, and the minimum temperature measurement data is added to the average value T3 to obtain the corrected minimum temperature measurement data, and finally the average value of the corrected minimum temperature measurement data and other temperature measurement data is calculated, and the average value T1 is updated to the average value finally obtained in this judgment process;

[0021] The control unit then packages the average value T1, the highest temperature measurement data or the minimum temperature measurement data to form a temperature data chain, and displays the temperature data chain on the display unit. The control unit generates an alarm signal when the average value T1 exceeds the threshold, and sends the alarm signal to the background server through the communication unit. The alarm signal includes a positioning signal, and the positioning signal is used to mark the temperature measurement belt that is over-temperature.

[0022] In some implementations, the collector further includes a transfer interface, and the transfer interface includes a three-way bus reading terminal;

[0023] It also includes three unconnected temperature measuring belts, and the temperature measurement data sending ends of the temperature measurement probes on the three temperature measuring belts are electrically connected to the control unit through three bus reading ends; the control unit sequentially reads the temperature measurement data of all the temperature measurement probes on the three temperature measuring belts for processing.

[0024] In a certain embodiment, the control unit includes a single chip microcomputer of model STM32L151C8T6, the data storage unit includes a memory of model FM24CL64, the communication unit includes a communication chip of model WH-NB73, a SIM card circuit, an operation indication circuit, an antenna circuit and a reset control circuit, the communication chip is electrically connected to the SIM card circuit, the operation indication circuit, the antenna circuit and the reset control circuit respectively, the display unit is a four-digit digital tube display, the power supply unit includes a lithium battery and a voltage conversion unit, and the voltage conversion unit converts the output voltage of the lithium battery into the working voltage of the control unit, the display unit, the data storage unit and the communication unit.

[0025] In a certain embodiment, when the collector is powered on, the control unit performs self-checking and initialization;

[0026] The self-check and initialization include data storage unit self-check, display unit self-check and communication unit initialization;

[0027] The data storage unit self-check includes detecting whether the data storage unit can work normally, and reading parameter values ​​from the data storage unit when the data storage unit can work normally, wherein the parameter values ​​include communication address parameters, network configuration parameters, temperature alarm threshold parameters and working mode parameters;

[0028] The display unit self-check includes shifting and displaying the number 8 on the display unit;

[0029] The communication unit initialization includes initializing the communication unit according to the communication address parameters and the network configuration parameters, so that the communication unit establishes communication with the background server, and the operation indication circuit emits light for indication after the communication is established.

[0030] Compared with the prior art, the present invention has the following beneficial effects: in actual use, the present invention detects the temperature through the temperature measuring probe, and then allows the control unit to read the data of the temperature measuring probe and send it through the communication unit, thereby realizing remote detection, simple operation, and low cost;

[0031] In addition, by installing the temperature measuring probe on the temperature measuring tape, the temperature measuring probe can be installed at the corresponding position according to actual needs, and finally the temperature measuring tape can be directly fixed, which simplifies the installation of the temperature measuring probe. During maintenance, the temperature measuring tape can be removed, and then the temperature measuring probe on the temperature measuring tape can be replaced and repaired. The operation is simple and the difficulty of maintenance is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Schematic diagram of the structure of the temperature measuring belt in the embodiment;

[0033] Figure 2is a schematic diagram of the structure of a collector in an embodiment;

[0034] Figure 3 is a circuit diagram of a control unit in an embodiment;

[0035] Figure 4 A circuit diagram of a data storage unit in an embodiment;

[0036] Figure 5 is a circuit diagram of a communication unit in an embodiment;

[0037] Figure 6 is a circuit diagram of a display unit in an embodiment;

[0038] Figure 7 is a circuit diagram of the transfer interface in the embodiment;

[0039] Figure 8 is a circuit diagram of a power supply unit in an embodiment;

[0040] Fig. 9 is a circuit diagram of a clock signal generating unit in an embodiment. DETAILED DESCRIPTION

[0041] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0042] In order to reduce the cost of cable joint temperature measurement, as well as the difficulty of installing the temperature measuring probe and the subsequent maintenance workload, this embodiment provides a cable body temperature detection device for voltage levels of 10KV and above, including a temperature measuring tape 1 and a collector;

[0043] The structure of the temperature measuring zone 1 is as follows Figure 1 As shown, a groove 10 is provided on the temperature measuring tape 1, and at least one fixing component 11 is installed in the groove 10 along the length direction of the temperature measuring tape 10, and the fixing component 11 includes at least two support plates 12 arranged in parallel along the width direction of the temperature measuring tape 1, and a mounting groove 13 is provided on the side of the support plate 12 away from the bottom surface of the temperature measuring tape 1 close to the bottom surface of the temperature measuring tape 1; a temperature measuring probe is installed on at least one fixing component 11, specifically, the temperature measuring probe is installed on the mounting groove 13 on the two support plates 12 of the fixing component 11;

[0044] like Figure 2 As shown, the collector includes a housing and a power supply unit 20, a control unit 21, a display unit 22, a data storage unit 23 and a communication unit 24 located in the housing;

[0045] The power supply unit 20 provides operating voltage to the control unit 21, the display unit 22, the data storage unit 23 and the communication unit 24 respectively;

[0046] The control unit 21 is electrically connected to the display unit 22, the data storage unit 23, the communication unit 24 and all the temperature measuring probes, and is used to obtain the temperature measurement data of the temperature measuring probes, display the temperature measurement data on the display unit 22, store the temperature measurement data in the data storage unit 23, and send the temperature measurement data to the background server through the communication unit 24.

[0047] In actual use, the present invention detects the temperature through the temperature measuring probe, and then allows the control unit 21 to read the data of the temperature measuring probe and send it through the communication unit 24, thereby realizing remote detection, which is simple to operate and low in cost;

[0048] In addition, by installing a temperature measuring probe on the temperature measuring tape 1, the temperature measuring probe can be installed at the corresponding position according to actual needs, and finally the temperature measuring tape can be directly fixed, which simplifies the installation of the temperature measuring probe. During maintenance, the temperature measuring tape 1 can be removed, and then the temperature measuring probe on the temperature measuring tape 1 can be replaced and repaired. The operation is simple and the difficulty of maintenance is reduced.

[0049] In actual use, all temperature measuring probes on one temperature measuring belt 1 can realize the temperature measurement of one cable. When the temperature of three cables needs to be measured, three temperature measuring belts 1 can be set for measurement.

[0050] Specifically, the number of the temperature measuring tapes 1 is greater than or equal to two, and a plurality of trapezoidal clamping joints 14 are provided at one end of the temperature measuring tape along the width direction of the temperature measuring tape, and a clamping groove 15 matching the clamping joint 14 is provided at the other end of the temperature measuring tape 1 along the width direction of the temperature measuring tape 1, and the clamping joint 14 is clamped in the corresponding clamping groove 15; a wire groove 16 is also provided at the clamping part of every two temperature measuring tapes 1.

[0051] During use, by respectively setting a snap joint 14 and a snap groove 15 at both ends of the temperature measuring tape 1, multiple temperature measuring tapes 1 can be connected together, thereby providing more installation positions for the temperature measuring probe, and more temperature measuring probes can be installed to meet more cable temperature measurement needs.

[0052] Specifically, in this embodiment, the temperature measuring probe is a temperature sensor of model DS18B20. When the number of temperature measuring probes is greater than one, all temperature measuring probes are connected in parallel, and the control unit 21 obtains temperature measurement data from the temperature measuring probes via a bus.

[0053] The DS18B20 temperature sensor has a separate single-wire interface that allows communication through one interface pin without the need for external components. It is powered by the data line and does not require a backup power supply. The temperature measurement range is -55 degrees Celsius to 125 degrees Celsius, with an increment of 0.0625 degrees Celsius. The temperature is read as a 12-bit digital value and can be converted into digital data within 1 second.

[0054] Specifically, in this embodiment, when the temperature measuring tape 1 is used to detect the temperature of a cable joint, the process of the control unit 21 acquiring the temperature measurement data of all temperature measuring probes is as follows:

[0055] First, the control unit 21 searches each temperature measuring probe in an automatic broadcasting manner to obtain the communication address of each temperature measuring probe;

[0056] Then the control unit 21 reads the temperature measurement data of each temperature measuring probe according to the acquired communication address. When the temperature measurement data of a certain temperature measuring probe cannot be read, the reading is repeated three times. If the reading is still unsuccessful after three repeated readings, the temperature measuring probe is marked as invalid data, and then the temperature measurement data of the next temperature measuring probe is read until the temperature measurement data of all temperature measuring probes are read.

[0057] Then the control unit 21 processes the temperature measurement data of all the temperature measurement probes, specifically as follows: first, determine whether the temperature corresponding to the temperature measurement data is above zero or below zero, for the temperature measurement data below zero, set the highest byte of the temperature measurement data to a - sign, and for the temperature measurement data above zero, set the highest byte of the temperature measurement data to a + sign; then, for the temperature measurement data between -100 and +100, retain one effective decimal place for the temperature measurement data, and for the temperature measurement data not between -100 and +100, do not retain the decimal place for the temperature measurement data; finally, calculate the average value T1 of all the temperature measurement data;

[0058] Then the maximum temperature measurement data or the minimum temperature measurement data is judged, specifically, whether the difference between the maximum temperature measurement data or the minimum temperature measurement data and the average value T1 exceeds the threshold;

[0059] When judging whether the difference between the maximum temperature measurement data and the average value T1 exceeds the threshold, if it exceeds the threshold, the maximum temperature measurement data can be regarded as invalid data, or the maximum temperature measurement data can be subtracted from other temperature measurement data in sequence to obtain the corresponding difference, and then the average value T2 of all the differences is calculated, and the maximum temperature measurement data is subtracted from the average value T2 to obtain the corrected temperature measurement data, and finally the average value of the corrected temperature measurement data and other temperature measurement data is calculated, and the average value T1 is updated to the average value obtained at the end of this judgment process;

[0060] When judging whether the difference between the minimum temperature measurement data and the average value T1 exceeds the threshold, if it exceeds the threshold, the minimum temperature measurement data can be regarded as invalid data, or the minimum temperature measurement data can be subtracted from other temperature measurement data to obtain the corresponding second difference, and then the average value T3 of all second differences is calculated, and the minimum temperature measurement data is added to the average value T3 to obtain the corrected minimum temperature measurement data, and finally the average value of the corrected minimum temperature measurement data and other temperature measurement data is calculated, and the average value T1 is updated to the average value finally obtained in this judgment process;

[0061] The control unit 21 then packages the average value T1, the highest temperature measurement data or the minimum temperature measurement data to form a temperature data chain, and displays the temperature data chain on the display unit 22. The control unit 21 generates an alarm signal when the average value T1 exceeds the threshold, and sends the alarm signal to the background server through the communication unit. The alarm signal includes a positioning signal, which is used to mark the temperature measurement belt that is over-temperature.

[0062] In this embodiment, in order to measure the temperature of the three-phase cable connector, the collector also includes a switching interface, and the circuit of the switching interface is as follows: Figure 6 The system includes three bus read ends, namely bus read end Ds18B20Data1, bus read end Ds18B20Data2 and bus read end Ds18B20Data3.

[0063] It also includes three unconnected temperature measuring belts, and the temperature measurement data sending ends of the temperature measuring probes on the three temperature measuring belts are electrically connected to the control unit 21 through three bus reading ends; the control unit 21 reads the temperature measurement data of all the temperature measuring probes on the three temperature measuring belts in turn for processing.

[0064] In actual use, since the temperatures of three joints need to be measured, the control unit can follow the above acquisition process when measuring the temperature of a certain joint.

[0065] Specifically, in this embodiment, Figure 3 As shown, the control unit 21 includes a single chip microcomputer of model STM32L151C8T6;

[0066] like Figure 4 As shown, the data storage unit 23 includes a memory of model FM24CL64;

[0067] like Figure 5 As shown, the communication unit 24 includes a communication chip U7 of model WH-NB73, a SIM card circuit 240, an operation indication circuit 241, an antenna circuit 242 and a reset control circuit 243, and the communication chip U7 is electrically connected to the SIM card circuit 240, the operation indication circuit 241, the antenna circuit 242 and the reset control circuit 243 respectively;

[0068] like Figure 7 As shown, the display unit 22 is a four-digit digital tube display;

[0069] like Figure 8 As shown, the power supply unit 20 includes a lithium battery 200 and a voltage conversion unit 201 , and the voltage conversion unit 201 converts the output voltage of the lithium battery 200 into an operating voltage for the control unit 21 , the display unit 22 , the data storage unit 23 and the communication unit 24 .

[0070] In addition, in this embodiment, the present invention also includes: Fig. 9 The clock signal generating unit shown is used to provide clock information for the entire device, including year, month, day, hour, minute, and second. When collecting data, the device can add a time tag to the collected data, provide a time basis for later data query and data reporting, and facilitate the generation of data trend curves. When the collected data generates an alarm event due to over-limit or abnormality, the time when the alarm event occurs can be quickly located based on the time tag, providing time support for operation monitoring fault analysis.

[0071] Specifically, in this embodiment, when the collector is powered on, the control unit 21 performs self-checking and initialization;

[0072] The self-check and initialization include the self-check of the data storage unit 23, the self-check of the display unit 22 and the initialization of the communication unit 24;

[0073] The self-check of the data storage unit 23 includes detecting whether the data storage unit 23 can work normally, and reading parameter values ​​from the data storage unit 23 when the data storage unit 23 can work normally, the parameter values ​​including communication address parameters, network configuration parameters, temperature alarm threshold parameters and working mode parameters;

[0074] The self-check of the display unit 22 includes shifting the display number 8 on the display unit 22;

[0075] The initialization of the communication unit 24 includes initializing the communication unit according to the communication address parameters and the network configuration parameters, so that the communication unit establishes communication with the background server, and after the communication is established, the operating indication circuit emits light for indication.

[0076] When the present invention is working normally, the control unit 21 reads the temperature measurement data of all the temperature measuring probes on each temperature measuring belt, and then processes them to obtain the temperature detection value, and stores the temperature detection value in the data storage unit 23 and displays it on the display unit 22. For example, taking the display of the temperature detection values ​​of the temperature measuring probes on three temperature measuring belts as an example, the three temperature measuring belts are named L1, L2 and L3 respectively. When displaying, the average value is displayed first, for example, it can be "L1"---> "+23.7", and then the maximum temperature measurement data of L1 is displayed in turn, such as: "L101"---> "+26.8", and finally the minimum temperature measurement data is displayed, for example, "L101"---> "+21.4", and the temperature measuring belts of other roads are displayed in the same way.

[0077] The above is based on the present invention as an inspiration. Through the above description, relevant staff can make various changes and modifications without departing from the technical idea of ​​this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A cable body temperature detection device for voltage levels of 10KV and above, characterized in that: It includes a temperature measuring belt and a collector, wherein a groove is provided on the temperature measuring belt, and at least one fixing component is installed in the groove along the length direction of the temperature measuring belt, wherein the fixing component includes at least two supporting plates arranged in parallel along the width direction of the temperature measuring belt, and a mounting groove is provided on the side of the supporting plate facing away from the temperature measuring belt in the direction close to the temperature measuring belt; a temperature measuring probe is installed on at least one fixing component; The collector includes a housing and a power supply unit, a control unit, a display unit, a data storage unit and a communication unit located inside the housing; The power supply unit provides working voltage to the control unit, display unit, data storage unit and communication unit respectively; The control unit is electrically connected to the display unit, the data storage unit, the communication unit and all the temperature measuring probes, respectively, and is used to obtain the temperature measurement data of the temperature measuring probes, display the temperature measurement data on the display unit, store the temperature measurement data in the data storage unit, and send the temperature measurement data to the background server through the communication unit.

2. A cable body temperature detection device for voltage levels of 10KV and above according to claim 1, characterized in that: The number of the temperature measuring tapes is greater than or equal to two, and a plurality of trapezoidal clamping joints are provided at one end of the temperature measuring tape along the width direction of the temperature measuring tape, and a clamping groove matching the clamping joint is provided at the other end of the temperature measuring tape along the width direction of the temperature measuring tape, and the clamping joint is clamped in the corresponding clamping groove; a wire groove is also provided at the clamping part of every two temperature measuring tapes.

3. A cable body temperature detection device for voltage levels of 10KV and above according to claim 1, characterized in that: The temperature measuring probe is a temperature sensor of model DS18B20. When the number of temperature measuring probes is greater than one, all temperature measuring probes are connected in parallel, and the control unit obtains temperature measurement data from the temperature measuring probes via a bus.

4. A cable body temperature detection device for voltage levels of 10KV and above according to claim 3, characterized in that: The process of the control unit acquiring the temperature measurement data of all temperature measurement probes is as follows: First, the control unit searches each temperature measuring probe in an automatic broadcasting manner to obtain the communication address of each temperature measuring probe; Then the control unit reads the temperature measurement data of each temperature measuring probe according to the acquired communication address. When the temperature measurement data of a certain temperature measuring probe cannot be read, the reading is repeated three times. If the reading is still unsuccessful after three repeated readings, the temperature measuring probe is marked as invalid data, and then the temperature measurement data of the next temperature measuring probe is read until the temperature measurement data of all temperature measuring probes are read. Then the control unit processes the temperature measurement data of all the temperature measurement probes, specifically as follows: first, determine whether the temperature corresponding to the temperature measurement data is above zero or below zero, for the temperature measurement data below zero, set the highest byte of the temperature measurement data to a - sign, and for the temperature measurement data above zero, set the highest byte of the temperature measurement data to a + sign; then, for the temperature measurement data between -100 and +100, retain one significant decimal place for the temperature measurement data, and for the temperature measurement data not between -100 and +100, do not retain the decimal place for the temperature measurement data; finally, calculate the average value T1 of all the temperature measurement data; Then the maximum temperature measurement data or the minimum temperature measurement data is judged, specifically, whether the difference between the maximum temperature measurement data or the minimum temperature measurement data and the average value T1 exceeds the threshold; When judging whether the difference between the maximum temperature measurement data and the average value T1 exceeds the threshold, if it exceeds the threshold, the maximum temperature measurement data can be regarded as invalid data, or the maximum temperature measurement data can be subtracted from other temperature measurement data in sequence to obtain the corresponding difference, and then the average value T2 of all the differences is calculated, and the maximum temperature measurement data is subtracted from the average value T2 to obtain the corrected temperature measurement data, and finally the average value of the corrected temperature measurement data and other temperature measurement data is calculated, and the average value T1 is updated to the average value obtained at the end of this judgment process; When judging whether the difference between the minimum temperature measurement data and the average value T1 exceeds the threshold, if it exceeds the threshold, the minimum temperature measurement data can be regarded as invalid data, or the minimum temperature measurement data can be subtracted from other temperature measurement data to obtain the corresponding second difference, and then the average value T3 of all second differences is calculated, and the minimum temperature measurement data is added to the average value T3 to obtain the corrected minimum temperature measurement data, and finally the average value of the corrected minimum temperature measurement data and other temperature measurement data is calculated, and the average value T1 is updated to the average value finally obtained in this judgment process; The control unit then packages the average value T1, the highest temperature measurement data or the minimum temperature measurement data to form a temperature data chain, and displays the temperature data chain on the display unit. The control unit generates an alarm signal when the average value T1 exceeds the threshold, and sends the alarm signal to the background server through the communication unit. The alarm signal includes a positioning signal, and the positioning signal is used to mark the temperature measurement belt that is over-temperature.

5. A cable body temperature detection device for voltage levels of 10KV and above according to claim 4, characterized in that: The collector also includes a transfer interface, and the transfer interface includes a three-way bus reading end; It also includes three unconnected temperature measuring belts, and the temperature measurement data sending ends of the temperature measurement probes on the three temperature measuring belts are electrically connected to the control unit through three bus reading ends; the control unit sequentially reads the temperature measurement data of all the temperature measurement probes on the three temperature measuring belts for processing.

6. A cable body temperature detection device for voltage levels of 10KV and above according to claim 1, characterized in that: The control unit includes a single chip microcomputer of model STM32L151C8T6, the data storage unit includes a memory of model FM24CL64, the communication unit includes a communication chip of model WH-NB73, a SIM card circuit, an operation indication circuit, an antenna circuit and a reset control circuit, the communication chip is electrically connected to the SIM card circuit, the operation indication circuit, the antenna circuit and the reset control circuit respectively, the display unit is a four-digit digital tube display, the power supply unit includes a lithium battery and a voltage conversion unit, and the voltage conversion unit converts the output voltage of the lithium battery into the working voltage of the control unit, the display unit, the data storage unit and the communication unit.

7. A cable body temperature detection device for voltage levels of 10KV and above according to claim 6, characterized in that: When the collector is powered on, the control unit performs self-checking and initialization; The self-check and initialization include data storage unit self-check, display unit self-check and communication unit initialization; The data storage unit self-check includes detecting whether the data storage unit can work normally, and reading parameter values ​​from the data storage unit when the data storage unit can work normally, wherein the parameter values ​​include communication address parameters, network configuration parameters, temperature alarm threshold parameters and working mode parameters; The display unit self-check includes shifting and displaying the number 8 on the display unit; The communication unit initialization includes initializing the communication unit according to the communication address parameters and the network configuration parameters, so that the communication unit establishes communication with the background server, and the operation indication circuit emits light for indication after the communication is established.

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