Cable temperature rise monitoring device, method and equipment based on load cable

Abstract

The invention discloses a cable temperature rise monitoring device, method and equipment based on a load cable, and belongs to the technical field of electric power facilities. The device comprises a load information acquisition module used for acquiring current load information of a cable; the monitoring threshold determination module is used for determining a temperature rise monitoring threshold corresponding to the current load information according to the current load information and a predetermined mapping relation between the load information and the temperature rise monitoring threshold; the temperature rise identification module is used for identifying whether the temperature data of the cable in the operation process exceeds a temperature rise monitoring threshold value or not; and the prompt information generation module is used for generating prompt information that the cable has potential safety hazards. According to the technical scheme, the current load information of the cable is acquired, and the corresponding temperature rise monitoring threshold is determined according to the predetermined mapping relation, so that targeted temperature rise monitoring can be carried out on the cable adopting different load information, and potential safety hazards caused by the temperature rise condition can be found and avoided in time.

Description

Technical Field

[0001] The present application belongs to the technical field of electric power facilities, and specifically relates to a cable temperature rise monitoring device, method and equipment based on a load cable. Background Art

[0002] During the continuous operation of the cable, due to various factors such as aging, insulation damage, poor contact or overload, the local resistance may increase abnormally, which in turn leads to a local temperature increase, or the insulation performance decreases, causing the overall temperature of the cable to increase. If this temperature increase phenomenon is not discovered and handled in time, it will seriously threaten the safety and stability of the power system.

[0003] When designing and manufacturing different types of cables, their conductor cross-sectional area, material, and insulation layer will be different. These differences directly determine the load-bearing capacity of the cables, which leads to different temperature rises that each cable can withstand. However, there is currently a lack of personalized and precise temperature rise monitoring strategies for each cable. Therefore, how to achieve precise temperature rise monitoring of the cable based on its load-bearing capacity is an urgent problem that people in this field need to solve. Summary of the invention

[0004] The embodiments of the present application provide a cable temperature rise monitoring device, method and equipment based on load cables, the purpose of which is to perform targeted temperature rise monitoring on cables using different load information, thereby helping to promptly discover and avoid safety hazards caused by temperature rise.

[0005] In a first aspect, an embodiment of the present application provides a cable temperature rise monitoring device based on a load cable, the device comprising:

[0006] A load information acquisition module, used to acquire current load information of the cable; wherein the load information includes load current information and load voltage information;

[0007] A monitoring threshold determination module, used to determine the temperature rise monitoring threshold corresponding to the current load information according to the current load information and a predetermined mapping relationship between the load information and the temperature rise monitoring threshold;

[0008] A temperature rise identification module is used to obtain the temperature data of the cable during operation and identify whether the temperature data exceeds the temperature rise monitoring threshold;

[0009] The prompt information generating module is used to generate prompt information indicating that there is a potential safety hazard in the cable when the temperature data exceeds the temperature rise monitoring threshold.

[0010] In a second aspect, an embodiment of the present application provides a cable temperature rise monitoring method based on a load cable, the method comprising:

[0011] The current load information of the cable is obtained through a load information obtaining module; wherein the load information includes load current information and load voltage information;

[0012] Determine the temperature rise monitoring threshold value corresponding to the current load information by a monitoring threshold determination module according to the current load information and a predetermined mapping relationship between the load information and the temperature rise monitoring threshold value;

[0013] Acquire temperature data of the cable during operation through the temperature rise identification module, and identify whether the temperature data exceeds the temperature rise monitoring threshold;

[0014] When the temperature data exceeds the temperature rise monitoring threshold, a prompt information generating module generates prompt information indicating that the cable has a potential safety hazard.

[0015] In a third aspect, an embodiment of the present application provides an electronic device, which includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the method described in the first aspect.

[0016] In a fourth aspect, an embodiment of the present application provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented.

[0017] In a fifth aspect, an embodiment of the present application provides a chip, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the first aspect.

[0018] In an embodiment of the present application, a load information acquisition module is used to obtain the current load information of the cable; wherein the load information includes load current information and load voltage information; a monitoring threshold determination module is used to determine the temperature rise monitoring threshold corresponding to the current load information according to the mapping relationship between the current load information and the predetermined load information and the temperature rise monitoring threshold; a temperature rise identification module is used to obtain the temperature data of the cable during operation and identify whether the temperature data exceeds the temperature rise monitoring threshold; a prompt information generation module is used to generate a prompt information indicating that the cable has a safety hazard when the temperature data exceeds the temperature rise monitoring threshold. The above-mentioned cable temperature rise monitoring device based on load cable can perform targeted temperature rise monitoring on cables with different load information by acquiring the current load information of the cable and determining the corresponding temperature rise monitoring threshold according to a predetermined mapping relationship, thereby helping to timely discover and avoid safety hazards caused by temperature rise. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a cable temperature rise monitoring device based on a load cable provided in Example 1 of the present application;

[0020] Figure 2 It is a structural schematic diagram of a cable temperature rise monitoring device based on a load cable provided in Example 2 of the present application;

[0021] Figure 3 It is a structural schematic diagram of a cable temperature rise monitoring device based on a load cable provided in Example 3 of the present application;

[0022] Figure 4 It is a flow chart of a cable temperature rise monitoring method based on a load cable provided in the fourth embodiment of the present application;

[0023] Figure 5 It is a schematic diagram of the structure of an electronic device provided in Example 5 of the present application. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the present application clearer, the specific embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. It is understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for the convenience of description, only the part related to the present application but not all the contents are shown in the accompanying drawings. Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flow charts. Although the flow chart describes each operation (or step) as a sequential process, many of the operations therein can be implemented in parallel, concurrently or simultaneously. In addition, the order of each operation can be rearranged. The process can be terminated when its operation is completed, but it can also have additional steps not included in the accompanying drawings. The process can correspond to a method, a function, a procedure, a subroutine, a subprogram, etc.

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0026] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0027] In the following, in combination with the accompanying drawings, the cable temperature rise monitoring device, method and equipment based on load cables provided in the embodiments of the present application are described in detail through specific embodiments and their application scenarios.

[0028] Embodiment 1

[0029] Figure 1 Schematic diagram of the structure of the cable temperature rise monitoring device based on the load cable provided in the first embodiment of the present application. Figure 1 As shown, the device comprises:

[0030] The load information acquisition module 110 is used to acquire the current load information of the cable; wherein the load information includes the load current information and the load voltage information;

[0031] A monitoring threshold determination module 120, configured to determine the temperature rise monitoring threshold corresponding to the current load information according to the current load information and a predetermined mapping relationship between the load information and the temperature rise monitoring threshold;

[0032] The temperature rise identification module 130 is used to obtain the temperature data of the cable during operation and identify whether the temperature data exceeds the temperature rise monitoring threshold;

[0033] The prompt information generating module 140 is used to generate prompt information indicating that there is a safety hazard in the cable when the temperature data exceeds the temperature rise monitoring threshold.

[0034] This application is applicable to scenarios where it is necessary to monitor whether the operating cables have temperature rise caused by faults. Specifically, the acquisition of cable load information, determination of temperature rise monitoring thresholds, and generation of safety hazard prompt information can be performed by smart terminal devices. Workers can maintain cables with temperature rise based on the generated prompt information to ensure the normal operation of the cables.

[0035] Based on the above usage scenarios, it can be understood that the executor of the present application can be a smart terminal device, such as a desktop computer, a laptop computer, a mobile phone, a tablet computer, and interactive multimedia, etc., and no excessive limitations are made here.

[0036] The load information acquisition module 110 is used to acquire the current load information of the cable.

[0037] A cable is a device that can be used for communication or power transmission. The current load information of the cable may refer to the load information of the cable currently in operation.

[0038] The load information may be information describing the load capacity of the cable, and may include load current information and load voltage information, etc. Specifically, the load current information may refer to the maximum current value that the cable can safely pass; the load voltage information may refer to the maximum voltage value that the cable can safely withstand.

[0039] The current load information of the cable can be obtained by performing limit tests on cable samples; the cable core radius, core material, insulation thickness and insulation material can also be obtained, and the conductivity and resistivity of the cable can be determined based on the core material, and the dielectric strength of the cable can be determined based on the insulation material. The current carrying information of the cable can be determined based on the core radius, conductivity and resistivity, and the voltage carrying information of the cable can be determined based on the insulation thickness and dielectric strength.

[0040] In this technical solution, optionally, the load information acquisition module is specifically used to:

[0041] Obtaining physical information of the cable; wherein the physical information includes core radius, core material, insulation thickness and insulation material;

[0042] Determine the electrical conductivity and resistivity of the cable according to the core material, and determine the dielectric strength of the cable according to the insulation layer material;

[0043] The carrying current information of the cable is determined according to the wire core radius, the conductivity and the resistivity, and the carrying voltage information of the cable is determined according to the insulation layer thickness and the dielectric strength.

[0044] The physical information of a cable may be information used to describe the physical characteristics of the cable, and may include the core radius, core material, insulation thickness, and insulation material. Among them, the core may refer to a metal conductor used to conduct current in a cable; the insulation layer may refer to a protective layer wrapped around the outside of the core to isolate the core from the external environment, thereby preventing current leakage, avoiding short circuits, and protecting the core from physical damage. Specifically, the core radius may refer to the radius of the cross-section of the core in the direction in which the cable is extended; the core material may refer to the material composition of the core; the insulation thickness may refer to the difference between the outer diameter and the inner diameter of the cross-section of the insulation layer in the direction in which the cable is extended; and the insulation material may refer to the material composition of the insulation layer. The physical information of a cable is generally recorded in the design book or production report and other descriptive documents of the cable, and the physical information of the cable can be obtained by consulting these descriptive documents.

[0045] Conductivity can be a parameter that describes the ability of a material to conduct current; resistivity can be a parameter that describes the ability of a material to block current; and dielectric strength can refer to the ratio of the maximum voltage that a material can withstand under the action of an electric field to its thickness. The conductivity, resistivity, and dielectric strength of each material are generally recorded in a material manual. By consulting the material manual, you can obtain the conductivity, resistivity, and dielectric strength of the cable.

[0046] By calculating the cross-sectional area of ​​the cable based on the core radius, the cable's carrying current information can be obtained by multiplying the product of the cross-sectional area and the conductivity by the resistivity; the cable's carrying voltage information can be obtained by multiplying the dielectric strength and the insulation layer thickness.

[0047] The advantage of this arrangement of the present invention is that by determining the carrying current information and carrying voltage information of the cable based on the physical information of the cable, the time for performing limit testing on cable samples can be saved and the efficiency of obtaining the carrying current information and carrying voltage information can be improved.

[0048] The monitoring threshold determination module 120 is used to determine the temperature rise monitoring threshold corresponding to the current load information according to the current load information and a predetermined mapping relationship between the load information and the temperature rise monitoring threshold.

[0049] The temperature rise monitoring threshold can be an upper limit of the temperature data of the cable, which indicates that the cable has a temperature rise and may cause safety hazards. The mapping relationship between load information and temperature rise monitoring threshold can mean that for any load information, there is a uniquely determined temperature rise monitoring threshold corresponding to it according to the mapping relationship. The mapping relationship between load information and temperature rise monitoring threshold is specifically: the power loss information of the cable is determined according to the load current information and the load voltage information, and the temperature rise monitoring threshold corresponding to the load information is determined according to the ambient temperature data and the power loss information.

[0050] In the technical solution, optionally, the monitoring threshold determination module is specifically used to:

[0051] Obtaining ambient temperature data of the cable laying environment;

[0052] Determine power loss information of the cable according to the carrying current information and the carrying voltage information;

[0053] A temperature rise monitoring threshold corresponding to the current load information is determined according to the ambient temperature data and the power loss information.

[0054] The laying environment of the cable may refer to the air environment of the area where the cable is located. The ambient temperature data may refer to the temperature value of the air environment. The ambient temperature data may be obtained by a temperature sensor installed in the laying environment of the cable.

[0055] The power loss information may refer to the electrical energy consumed by the cable per unit time, which is also equivalent to the heat energy generated by the cable per unit time. The power loss information of the cable may be obtained by multiplying the carrying current information with the carrying voltage information.

[0056] The temperature rise monitoring threshold corresponding to the current load information can be determined by dividing the power loss information by the temperature transfer coefficient to obtain the temperature rise change value, and adding the ambient temperature data to the temperature rise change value to obtain the temperature rise monitoring threshold corresponding to the current load information. The temperature transfer coefficient can be a coefficient that describes the ability of the cable to transfer heat to the external environment, which can be obtained through experiments.

[0057] The advantage of this arrangement of the present scheme is that by determining the power loss information of the cable based on the carrying current information and the carrying voltage information, and determining the temperature rise monitoring threshold based on the ambient temperature data and the power loss information, the present scheme can be applied to cables under different working conditions, thereby improving the accuracy of the determined temperature rise monitoring threshold.

[0058] The temperature rise identification module 130 is used to obtain temperature data of the cable during operation and identify whether the temperature data exceeds the temperature rise monitoring threshold.

[0059] The temperature data of the cable during operation may refer to the temperature value inside the cable. The temperature data of the cable during operation may be obtained by using a temperature sensor installed at each position of the cable to obtain the temperature data of each position of the cable during operation, or by obtaining infrared image data of the cable and determining the temperature data of each position of the cable during operation based on the infrared image data.

[0060] The method for identifying whether the temperature data exceeds the temperature rise monitoring threshold may be to compare the temperature data with the temperature rise monitoring threshold. If the temperature data is greater than the temperature rise monitoring threshold, it is identified that the temperature data exceeds the temperature rise monitoring threshold.

[0061] The prompt information generating module 140 is used to generate prompt information indicating that there is a safety hazard in the cable when the temperature data exceeds the temperature rise monitoring threshold.

[0062] The prompt information that the cable has a potential safety hazard can be used to remind the staff that the current temperature data of the cable is too high and may cause a potential safety hazard. The specific content of the prompt information that the cable has a potential safety hazard can include the current temperature data of the cable and the temperature rise monitoring threshold. Among them, the potential safety hazards include electrical breakdown, overload failure, and fire. The method of generating the prompt information that the cable has a potential safety hazard can be to use a display device of a smart terminal device to pop up a prompt window, and the prompt window displays the prompt information that the cable has a potential safety hazard.

[0063] In the example of the present application, the load information acquisition module is used to obtain the current load information of the cable; wherein the load information includes the load current information and the load voltage information; the monitoring threshold determination module is used to determine the temperature rise monitoring threshold corresponding to the current load information according to the mapping relationship between the current load information and the predetermined load information and the temperature rise monitoring threshold; the temperature rise identification module is used to obtain the temperature data of the cable during operation and identify whether the temperature data exceeds the temperature rise monitoring threshold; the prompt information generation module is used to generate a prompt information that the cable has a safety hazard when the temperature data exceeds the temperature rise monitoring threshold. This technical solution can perform targeted temperature rise monitoring on cables with different load information by obtaining the current load information of the cable and determining the corresponding temperature rise monitoring threshold according to a predetermined mapping relationship, thereby helping to timely discover and avoid safety hazards caused by temperature rise.

[0064] Embodiment 2

[0065] Figure 2 It is a structural schematic diagram of a cable temperature rise monitoring device based on a load cable provided in Example 2 of the present application. This solution has made better improvements on the basis of the above-mentioned embodiments, and the specific improvements are as follows: the temperature rise identification module is specifically used for: a temperature acquisition unit, which is used to obtain the temperature data of each position of the cable during operation; an average temperature rise identification unit, which is used to determine the average temperature data of the cable according to the temperature data, and identify whether the average temperature data exceeds the temperature rise monitoring threshold; a local temperature rise identification unit, which is used to determine the local temperature rise position of the cable according to the temperature data, and identify whether the temperature data of the local temperature rise position exceeds the temperature rise monitoring threshold; correspondingly, the prompt information generation module is specifically used for: when the average temperature data and / or the temperature data of the local temperature rise position exceed the temperature rise monitoring threshold, generating prompt information that the cable has a safety hazard.

[0066] like Figure 2 As shown, the device comprises:

[0067] The load information acquisition module 210 is used to acquire the current load information of the cable; wherein the load information includes the load current information and the load voltage information;

[0068] A monitoring threshold determination module 220, configured to determine the temperature rise monitoring threshold corresponding to the current load information according to the current load information and a predetermined mapping relationship between the load information and the temperature rise monitoring threshold;

[0069] The temperature rise identification module 230 is used to obtain the temperature data of the cable during operation and identify whether the temperature data exceeds the temperature rise monitoring threshold;

[0070] The prompt information generating module 240 is used to generate prompt information indicating that there is a potential safety hazard in the cable when the temperature data exceeds the temperature rise monitoring threshold.

[0071] The temperature rise identification module 230 is specifically used for:

[0072] The temperature acquisition unit 2301 is used to acquire the temperature data of each position of the cable during operation;

[0073] An average temperature rise identification unit 2302 is used to determine average temperature data of the cable according to the temperature data, and identify whether the average temperature data exceeds the temperature rise monitoring threshold;

[0074] A local temperature rise identification unit 2303 is used to determine the local temperature rise position of the cable according to the temperature data, and to identify whether the temperature data at the local temperature rise position exceeds the temperature rise monitoring threshold;

[0075] The prompt information generating module 240 is specifically used for:

[0076] When the average temperature data and / or the temperature data of the local temperature rise position exceeds the temperature rise monitoring threshold, a prompt message indicating that there is a safety hazard in the cable is generated.

[0077] The average temperature data of the cable may refer to the average value of the temperature data at each position of the cable during operation. The average temperature data of the cable may be obtained by summing up the temperature data at each position of the cable and counting the number of temperature data, and dividing the sum by the number of statistics. The method for identifying whether the average temperature data exceeds the temperature rise monitoring threshold may be to compare the average temperature data with the temperature rise monitoring threshold. If the average temperature data is greater than the temperature rise monitoring threshold, it is identified that the average temperature data exceeds the temperature rise monitoring threshold.

[0078] In the technical solution, optionally, the average temperature rise identification unit is specifically used to:

[0079] Obtain information on the degree of airtightness of the cable laying environment and heat dissipation facilities;

[0080] Determine the heat dissipation coefficient of the installation environment according to the airtightness information and the heat dissipation facility information;

[0081] Determine a target temperature rise monitoring threshold value according to the heat dissipation coefficient and the temperature rise monitoring threshold value;

[0082] Determine average temperature data of the cable according to the temperature data, and identify whether the average temperature data exceeds the target temperature rise monitoring threshold;

[0083] Accordingly, the prompt information generating module is specifically used for:

[0084] When the average temperature data exceeds the target temperature rise monitoring threshold and / or the temperature data at the local temperature rise location exceeds the temperature rise monitoring threshold, prompt information indicating that there is a safety hazard in the cable is generated.

[0085] The airtightness information of the laying environment may be information describing the ventilation and air circulation conditions of the laying environment; the heat dissipation facility information of the laying environment may refer to the heat dissipation performance information and location information of each facility in the laying environment used to promote heat dissipation of the laying environment, etc. The airtightness information and heat dissipation facility information of the cable laying environment may be obtained by querying the cable laying design documents and their facility lists.

[0086] The heat dissipation coefficient of the laying environment may be a value describing the heat dissipation capacity of the laying environment. The heat dissipation coefficient of the laying environment may be determined by determining an auxiliary heat dissipation coefficient according to the heat dissipation facility information, and multiplying the auxiliary heat dissipation coefficient by the airtightness information to obtain the heat dissipation coefficient of the laying environment.

[0087] The target temperature rise monitoring threshold may be a temperature rise monitoring threshold relative to the entire cable. The target temperature rise monitoring threshold may be obtained by dividing the temperature rise monitoring threshold by the heat dissipation coefficient of the laying environment. The method for identifying whether the average temperature data exceeds the target temperature rise monitoring threshold may be to compare the average temperature data with the target temperature rise monitoring threshold. If the average temperature data is greater than the target temperature rise monitoring threshold, it is identified that the average temperature data exceeds the target temperature rise monitoring threshold.

[0088] The following is a sample code for determining the average temperature data and the target temperature rise monitoring threshold, and identifying whether the average temperature data exceeds the target temperature rise monitoring threshold:

[0089]

[0090]

[0091] The advantage of this setting of the present scheme is that by determining the target temperature rise monitoring threshold value based on the airtightness information of the laying environment and the heat dissipation facility information, and identifying whether the average temperature data exceeds the target temperature rise monitoring threshold value, the influence of the heat dissipation capacity of the laying environment on the cable temperature rise can be considered, thereby improving the accuracy of the identification results of the temperature rise situation.

[0092] The local temperature rise position may refer to a cable position whose temperature data is higher than the temperature data at other positions. According to different ways of obtaining the temperature data at each position of the cable during operation, the way of determining the local temperature rise position of the cable according to the temperature data is also different accordingly. For example, if the temperature data at each position of the cable during operation is obtained by a temperature sensor installed at each position of the cable, the maximum position of the temperature data is determined, and the maximum position where the temperature data exceeds the average temperature data is determined as the local temperature rise position of the cable; if the infrared image data of the cable is obtained, and the temperature data at each position of the cable during operation is determined according to the infrared image data, the brightness channel value of each pixel in the infrared image data is determined, and the cable position corresponding to the maximum pixel point of the brightness channel value is determined as the local temperature rise position of the cable. The method of identifying whether the temperature data at the local temperature rise position exceeds the temperature rise monitoring threshold can be to compare the temperature data at the local temperature rise position with the temperature rise monitoring threshold. If the temperature data at the local temperature rise position is greater than the temperature rise monitoring threshold, it is identified that the temperature data at the local temperature rise position exceeds the temperature rise monitoring threshold.

[0093] The benefit of this arrangement of the present scheme is that by determining the average temperature data and the local temperature rise location based on the temperature data of each position of the cable, it can help to quickly grasp the overall temperature rise of the cable and the cable location that is most likely to have safety hazards.

[0094] Embodiment 3

[0095] Figure 3 It is a structural schematic diagram of a cable temperature rise monitoring device based on a load cable provided in Example 3 of the present application. This solution has made better improvements on the basis of the above-mentioned embodiments, and the specific improvements are as follows: the temperature acquisition unit is specifically used to: obtain the temperature data of each position of the cable during operation through the temperature sensor installed at each position of the cable; correspondingly, the local temperature rise identification unit is specifically used to: determine the maximum value position of the temperature data; determine the maximum value position where the temperature data exceeds the average temperature data as the local temperature rise position of the cable; identify whether the temperature data at the local temperature rise position exceeds the temperature rise monitoring threshold.

[0096] like Figure 3 As shown, the device comprises:

[0097] The load information acquisition module 310 is used to acquire the current load information of the cable; wherein the load information includes the load current information and the load voltage information;

[0098] A monitoring threshold determination module 320, configured to determine the temperature rise monitoring threshold corresponding to the current load information according to the current load information and a predetermined mapping relationship between the load information and the temperature rise monitoring threshold;

[0099] The temperature rise identification module 330 is used to obtain the temperature data of the cable during operation and identify whether the temperature data exceeds the temperature rise monitoring threshold;

[0100] The prompt information generating module 340 is used to generate prompt information indicating that there is a safety hazard in the cable when the temperature data exceeds the temperature rise monitoring threshold.

[0101] The temperature rise identification module 330 is specifically used for:

[0102] The temperature acquisition unit 3301 is used to acquire the temperature data of each position of the cable during operation;

[0103] An average temperature rise identification unit 3302 is used to determine average temperature data of the cable according to the temperature data, and identify whether the average temperature data exceeds the temperature rise monitoring threshold;

[0104] A local temperature rise identification unit 3303 is used to determine the local temperature rise position of the cable according to the temperature data, and to identify whether the temperature data at the local temperature rise position exceeds the temperature rise monitoring threshold;

[0105] The prompt information generating module 340 is specifically used for:

[0106] When the average temperature data and / or the temperature data of the local temperature rise position exceeds the temperature rise monitoring threshold, a prompt message indicating that there is a safety hazard in the cable is generated.

[0107] The temperature acquisition unit 3301 is specifically used for:

[0108] The temperature data of each position of the cable during operation is obtained by installing temperature sensors at each position of the cable;

[0109] Accordingly, the local temperature rise identification unit 3303 is specifically used for:

[0110] Determine the maximum value position of the temperature data;

[0111] The maximum value position where the temperature data exceeds the average temperature data is determined as the local temperature rise position of the cable;

[0112] Identify whether the temperature data of the local temperature rise location exceeds the temperature rise monitoring threshold.

[0113] The temperature sensor is a device used to measure and monitor temperature. The temperature sensor converts the measured temperature changes at the cable location into electrical signals, which are then converted into digital signals by the intelligent terminal device to obtain the temperature data at the cable location.

[0114] The maximum value position may refer to the cable position whose temperature data is greater than the temperature data of the adjacent cable position. The method of determining the maximum value position of the temperature data may be to establish a plane rectangular coordinate system with the cable position as the horizontal axis and the temperature data as the vertical axis, and to perform punctuation in the plane rectangular coordinate system according to the temperature data of each cable position obtained and fit it into a smooth curve, and finally perform a primary derivative operation and a secondary derivative operation on the smooth curve, and determine the point whose value in the function obtained by the primary derivative operation is 0 and whose value in the function obtained by the secondary derivative operation is less than 0 as the maximum value position.

[0115] The advantage of this arrangement of the present scheme is that the maximum position where the temperature data exceeds the average temperature data is determined as the local temperature rise position of the cable, and the maximum position where the temperature data is less than the average temperature data, which may be a safety fluctuation, can be filtered out, thereby improving the accuracy of the determined local temperature rise position.

[0116] In the technical solution, optionally, the temperature acquisition unit is specifically used to:

[0117] Acquire infrared image data of the cable;

[0118] Determine the temperature data of each position of the cable during operation according to the infrared image data;

[0119] Accordingly, the local temperature rise identification unit is specifically used for:

[0120] Determine the brightness channel value of each pixel in the infrared image data;

[0121] The cable position corresponding to the maximum pixel point of the brightness channel value is determined as the local temperature rise position of the cable;

[0122] Identify whether the temperature data of the local temperature rise location exceeds the temperature rise monitoring threshold.

[0123] The infrared image data of the cable may refer to an image formed by infrared radiation emitted by an object with the cable as the main image content. The infrared image data of the cable may be obtained by using an infrared camera. After the infrared image data is captured, a mapping matrix between the cable position and the pixel coordinates of the infrared image data needs to be established based on the external and internal parameters of the infrared camera.

[0124] The method of determining the temperature data of each position of the cable during operation based on the infrared image data can be carried out by using the pixel values ​​of the pixel points corresponding to each position of the cable in the infrared image data and the pre-constructed mapping relationship between the pixel value and the temperature data to determine the temperature data of each position of the cable during operation.

[0125] The brightness channel value of a pixel point can be a numerical value used to describe the brightness and contrast of the pixel point, which is equal to the pixel value in the infrared image data. The brightness channel value is generally between 0-255, 0 represents black, 255 represents white, and the larger the brightness channel value, the larger the temperature data mapped.

[0126] The method for determining the maximum pixel point of the brightness channel value is to traverse each pixel point in the infrared image data, compare the pixel value of each pixel point with the pixel values ​​of the surrounding eight pixels, and if the pixel value of a pixel point is greater than the pixel values ​​of the surrounding eight pixels, then the pixel point is determined as the maximum pixel point of the brightness channel value.

[0127] The following is a sample code for determining the maximum pixel value of the brightness channel:

[0128]

[0129]

[0130] The advantage of this arrangement of the present scheme is that by determining the temperature data of each position of the cable during operation based on the infrared image data, and determining the cable position corresponding to the maximum pixel point of the brightness channel value as the local temperature rise position of the cable, the physical interference of the temperature data acquisition process on the cable can be avoided, and it is helpful for the staff to intuitively view the temperature distribution of each position of the cable.

[0131] Embodiment 4

[0132] Figure 4 Schematic diagram of the process of the cable temperature rise monitoring method based on the load cable provided in the fourth embodiment of the present application. Figure 4 As shown, the specific steps include:

[0133] S401, obtaining current load information of the cable through a load information obtaining module; wherein the load information includes load current information and load voltage information;

[0134] S402, determining, by a monitoring threshold determination module, a temperature rise monitoring threshold corresponding to the current load information according to the current load information and a predetermined mapping relationship between the load information and the temperature rise monitoring threshold;

[0135] S403, obtaining temperature data of the cable during operation through a temperature rise identification module, and identifying whether the temperature data exceeds the temperature rise monitoring threshold;

[0136] S404: Generate, by means of a prompt information generating module, prompt information indicating that a potential safety hazard exists in the cable when the temperature data exceeds the temperature rise monitoring threshold.

[0137] In an embodiment of the present application, the current load information of the cable is obtained through a load information acquisition module; wherein the load information includes load current information and load voltage information; the monitoring threshold determination module determines the temperature rise monitoring threshold corresponding to the current load information according to the current load information and the mapping relationship between the predetermined load information and the temperature rise monitoring threshold; the temperature data of the cable during operation is obtained through a temperature rise identification module, and it is identified whether the temperature data exceeds the temperature rise monitoring threshold; when the temperature data exceeds the temperature rise monitoring threshold, a prompt information is generated through a prompt information generation module indicating that the cable has a safety hazard. The above-mentioned cable temperature rise monitoring method based on load cables can perform targeted temperature rise monitoring on cables with different load information by obtaining the current load information of the cable and determining the corresponding temperature rise monitoring threshold according to a predetermined mapping relationship, thereby helping to timely discover and avoid safety hazards caused by temperature rise.

[0138] The cable temperature rise monitoring method based on load cable provided in the embodiment of the present application corresponds to the cable temperature rise monitoring device based on load cable provided in the above embodiment, and has the same functional modules and beneficial effects. To avoid repetition, they will not be repeated here.

[0139] Embodiment 5

[0140] like Figure 5 As shown, an embodiment of the present application also provides an electronic device 500, including a processor 501, a memory 502, and a program or instruction stored in the memory 502 and executable on the processor 501. When the program or instruction is executed by the processor 501, each process of the above-mentioned embodiment of the cable temperature rise monitoring device based on the load cable is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be described here.

[0141] It should be noted that the electronic devices in the embodiments of the present application include the mobile electronic devices and non-mobile electronic devices mentioned above.

[0142] Embodiment 6

[0143] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned cable temperature rise monitoring device embodiment based on a load cable are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0144] The processor is a processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0145] Embodiment 7

[0146] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned embodiment of the cable temperature rise monitoring device based on the load cable, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0147] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0148] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0149] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, a disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0150] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

[0151] The above are only preferred embodiments of the present application and the technical principles used. The present application is not limited to the specific embodiments described herein, and various obvious changes, readjustments and substitutions that can be made by those skilled in the art will not deviate from the scope of protection of the present application. Therefore, although the present application is described in more detail through the above embodiments, the present application is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the claims.

Claims

1. A cable temperature rise monitoring device based on a load cable, characterized in that: The device comprises: A load information acquisition module, used to acquire current load information of the cable; wherein the load information includes load current information and load voltage information; A monitoring threshold determination module, used to determine the temperature rise monitoring threshold corresponding to the current load information according to the current load information and a predetermined mapping relationship between the load information and the temperature rise monitoring threshold; A temperature rise identification module is used to obtain the temperature data of the cable during operation and identify whether the temperature data exceeds the temperature rise monitoring threshold; The prompt information generating module is used to generate prompt information indicating that there is a safety hazard in the cable when the temperature data exceeds the temperature rise monitoring threshold.

2. The cable temperature rise monitoring device based on the load cable according to claim 1 is characterized in that: The temperature rise identification module is specifically used for: A temperature acquisition unit is used to acquire temperature data of each position of the cable during operation; An average temperature rise identification unit, used to determine average temperature data of the cable according to the temperature data, and to identify whether the average temperature data exceeds the temperature rise monitoring threshold; A local temperature rise identification unit, used to determine the local temperature rise position of the cable according to the temperature data, and to identify whether the temperature data at the local temperature rise position exceeds the temperature rise monitoring threshold; Accordingly, the prompt information generating module is specifically used for: When the average temperature data and / or the temperature data of the local temperature rise position exceeds the temperature rise monitoring threshold, a prompt message indicating that there is a safety hazard in the cable is generated.

3. The cable temperature rise monitoring device based on the load cable according to claim 2 is characterized in that: The temperature acquisition unit is specifically used for: The temperature data of each position of the cable during operation is obtained by installing temperature sensors at each position of the cable; Accordingly, the local temperature rise identification unit is specifically used for: Determine the maximum value position of the temperature data; The maximum value position where the temperature data exceeds the average temperature data is determined as the local temperature rise position of the cable; Identify whether the temperature data of the local temperature rise location exceeds the temperature rise monitoring threshold.

4. The cable temperature rise monitoring device based on the load cable according to claim 2 is characterized in that: The temperature acquisition unit is specifically used for: Acquire infrared image data of the cable; Determine the temperature data of each position of the cable during operation according to the infrared image data; Accordingly, the local temperature rise identification unit is specifically used for: Determine the brightness channel value of each pixel in the infrared image data; The cable position corresponding to the maximum pixel point of the brightness channel value is determined as the local temperature rise position of the cable; Identify whether the temperature data of the local temperature rise location exceeds the temperature rise monitoring threshold.

5. The cable temperature rise monitoring device based on the load cable according to claim 2 is characterized in that: The average temperature rise identification unit is specifically used for: Obtain information on the degree of airtightness of the cable laying environment and heat dissipation facilities; Determine the heat dissipation coefficient of the installation environment according to the airtightness information and the heat dissipation facility information; Determine a target temperature rise monitoring threshold value according to the heat dissipation coefficient and the temperature rise monitoring threshold value; Determine average temperature data of the cable according to the temperature data, and identify whether the average temperature data exceeds the target temperature rise monitoring threshold; Accordingly, the prompt information generating module is specifically used for: When the average temperature data exceeds the target temperature rise monitoring threshold and / or the temperature data at the local temperature rise location exceeds the temperature rise monitoring threshold, prompt information indicating that there is a safety hazard in the cable is generated.

6. The cable temperature rise monitoring device based on a load cable according to claim 1 is characterized in that: The monitoring threshold determination module is specifically used to: Obtaining ambient temperature data of the cable laying environment; Determine power loss information of the cable according to the carrying current information and the carrying voltage information; A temperature rise monitoring threshold corresponding to the current load information is determined according to the ambient temperature data and the power loss information.

7. The cable temperature rise monitoring device based on a load cable according to claim 1 is characterized in that: The load information acquisition module is specifically used for: Obtaining physical information of the cable; wherein the physical information includes core radius, core material, insulation thickness and insulation material; Determine the electrical conductivity and resistivity of the cable according to the core material, and determine the dielectric strength of the cable according to the insulation layer material; The carrying current information of the cable is determined according to the core radius, the conductivity and the resistivity, and the carrying voltage information of the cable is determined according to the insulation layer thickness and the dielectric strength.

8. A cable temperature rise monitoring method based on a load cable, characterized in that: The method comprises: The current load information of the cable is obtained through a load information obtaining module; wherein the load information includes load current information and load voltage information; Determine the temperature rise monitoring threshold value corresponding to the current load information by a monitoring threshold determination module according to the current load information and a predetermined mapping relationship between the load information and the temperature rise monitoring threshold value; Acquire the temperature data of the cable during operation through the temperature rise identification module, and identify whether the temperature data exceeds the temperature rise monitoring threshold; When the temperature data exceeds the temperature rise monitoring threshold, a prompt information generating module generates prompt information indicating that the cable has a potential safety hazard.

9. The cable temperature rise monitoring method based on load cable according to claim 8 is characterized in that: The temperature data of the cable during operation is obtained through the temperature rise identification module, and whether the temperature data exceeds the temperature rise monitoring threshold is identified, including: The temperature data of each position of the cable during operation is obtained through the temperature acquisition unit; Determine average temperature data of the cable according to the temperature data through an average temperature rise identification unit, and identify whether the average temperature data exceeds the temperature rise monitoring threshold; Determine the local temperature rise position of the cable according to the temperature data by a local temperature rise identification unit, and identify whether the temperature data of the local temperature rise position exceeds the temperature rise monitoring threshold; Correspondingly, when the temperature data exceeds the temperature rise monitoring threshold, the prompt information generating module generates prompt information indicating that the cable has a potential safety hazard, including: When the average temperature data and / or the temperature data of the local temperature rise position exceeds the temperature rise monitoring threshold, a prompt message indicating that there is a safety hazard in the cable is generated.

10. An electronic device, characterized in that: It includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor. When the program or instruction is executed by the processor, the steps of the cable temperature rise monitoring method based on load cables as described in any one of claims 8 to 9 are implemented.

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