Heating cable test data acquisition control method and system, medium and product

Abstract

The invention discloses a heating cable test data acquisition control method and system, a medium and a product, and relates to the technical field of electrical variable measurement. The method comprises the following steps: acquiring real-time test data, cable image data and real-time environment temperature when each heating cable is subjected to a power-on test; determining a predicted environment temperature of each heating cable according to the real-time test data and a preset test environment temperature; according to the predicted environment temperature and the real-time environment temperature, the real-time working power of the temperature adjusting equipment corresponding to each heating cable is determined; controlling the temperature adjusting equipment to work according to the real-time working power; determining a real-time working state of the target heating cable; when the real-time working state is abnormal, the target power-on test of the target heating cable is stopped; and after detecting that the target power-on test is finished, generating a power-on test result of the target heating cable. By implementing the technical scheme, the accuracy of the test result of the power-on test on the independently used heating cable under the extreme temperature condition is improved.

Description

Technical Field

[0001] The present application relates to the technical field of measuring electrical variables, and in particular to a heating cable test data acquisition control method, system, medium and product. Background Art

[0002] In the process of R&D and quality inspection of heating cables, power-on test is a crucial link. By energizing the heating cable, its working state in the actual use scenario can be simulated, so as to obtain key performance data and provide a strong basis for product optimization and improvement. In particular, power-on test in extreme environment plays a decisive role in evaluating the reliability of heating cables in harsh environments.

[0003] At present, in the field of heating cable testing, a common practice is to place multiple heating cables in the same test area and conduct power-on tests at the same time. During the test, the test data of the preset heating cables are collected through sensors, and the performance of the heating cables is evaluated based on the collected test data.

[0004] However, since some heating cables are used alone, when multiple heating cables are simultaneously powered on in the same area, each cable will release heat during the test, causing the heat released by other heating cables to interfere with the test temperature around these heating cables when they are powered on at extreme temperatures, causing the actual test temperature around these heating cables to deviate from the preset test temperature. At this time, the data collected based on the actual test temperature will have errors and cannot truly reflect the performance of these individually used heating cables at the preset test temperature, affecting the accuracy of the test results, and further affecting the accuracy of the evaluation results of the performance evaluation of these individually used heating cables. Summary of the invention

[0005] The present application provides a heating cable test data acquisition control method, system, medium and product, which can improve the accuracy of the test results of a power-on test on a single-use heating cable under extreme temperature conditions.

[0006] In a first aspect, the present application provides a heating cable test data acquisition and control method, the method comprising: collecting real-time test data, cable image data and real-time ambient temperature when each heating cable in a target test area is subjected to a power-on test, the test data comprising the surface temperature, voltage and current of the heating cable; determining a predicted ambient temperature of each heating cable based on the real-time test data and a preset test ambient temperature, the predicted ambient temperature being the ambient temperature of the surroundings collected by a temperature sensor corresponding to the heating cable when only one heating cable is subjected to a power-on test in the target test area and the test ambient temperature is the preset test ambient temperature; determining a real-time working power of a temperature regulating device corresponding to a sub-test area where each heating cable is located based on the predicted ambient temperature and the real-time ambient temperature, the sub-test area being the target test area. The domain is divided into regions, each sub-test region corresponds to a temperature regulating device, the temperature regulating device includes a refrigeration device and a heating device, the real-time working power is the working power that the temperature regulating device needs to adjust to make the real-time ambient temperature and the predicted ambient temperature within a certain error range; the temperature regulating device is controlled to work according to the real-time working power, so that the actual test ambient temperature of each heating cable and the preset test ambient temperature are within a certain error range; the real-time working state of the target heating cable is determined according to the target real-time test data and the target cable image data corresponding to the target heating cable, and the real-time working state includes normal and abnormal; when the real-time working state is abnormal, the target power-on test of the target heating cable is stopped; after detecting that the target power-on test is completed, the power-on test result of the target heating cable is generated.

[0007] By adopting the above technical solution, when it is detected that the actual test temperature of the heating cable used alone has a large error with the preset test temperature, the actual test temperature of the heating cable is adjusted by the temperature control device, so that the actual test temperature of the heating cable and the preset test temperature are kept within a certain error range, so that the data collected based on the actual test temperature can truly reflect the performance of the heating cable used alone at the preset test temperature, reduce the impact of the inconsistency between the actual test temperature and the preset test temperature on the accuracy of the test results, and improve the accuracy of the test results of the power-on test of the heating cable used alone under extreme temperature conditions. At the same time, the collected real-time test data and cable image data are automatically processed and analyzed, and the power-on test results of the heating cable are generated, which reduces the time for manual processing and analysis of data and improves the efficiency and accuracy of test data processing.

[0008] In combination with some embodiments of the first aspect, in some embodiments, the predicted ambient temperature of each heating cable is determined according to the real-time test data and the preset test ambient temperature, specifically comprising: substituting the real-time test data, the preset test ambient temperature, the power-on test duration of each heating cable, and the distance between the heating cable and the corresponding temperature sensor into an ambient temperature estimation formula to obtain the predicted ambient temperature of each heating cable; Among them, the ambient temperature estimation formula is: ;in, The heating cable is tested for a duration of The predicted ambient temperature at is the preset test environment temperature, is the duration of the power-on test, The heating cable is tested for a duration of The voltage at The heating cable is tested for a duration of The current at is the material density of the heating cable, is the specific heat capacity of the heating cable material, is the cross-sectional area of ​​the heating cable, is the distance between the sensor for collecting ambient temperature and the heating cable, is the standard deviation of the temperature distribution, is the temperature correction constant.

[0009] By adopting the above technical scheme, by comprehensively considering multiple key factors such as real-time test data, preset test environment temperature, power-on test duration, and the distance between the heating cable and the temperature sensor, and substituting them into the ambient temperature estimation formula to determine the predicted ambient temperature, it can more accurately simulate the ambient temperature conditions when only one heating cable is powered on for testing, and fully consider the various influencing factors of the heating cable in actual work. Compared with simple temperature speculation, the calculated predicted ambient temperature is more in line with reality, thereby improving the accuracy and reliability of the predicted ambient temperature.

[0010] In combination with some embodiments of the first aspect, in some embodiments, the real-time working power of the temperature regulating device corresponding to the sub-test area where each heating cable is located is determined based on the predicted ambient temperature and the real-time ambient temperature, specifically including: according to the predicted ambient temperature, the real-time ambient temperature and the preset temperature adjustment time, respectively calculate the first real-time working power, the second real-time working power and the third real-time working power of the temperature regulating device corresponding to the sub-test area where each heating cable is located, the first real-time working power includes the first heating power of the heating device when only the heating device is adjusted and the first cooling power of the cooling device, the second real-time working power includes the heating power when only the cooling device is adjusted The second heating power of the equipment and the second cooling power of the refrigeration equipment, the third real-time working power includes the third heating power of the heating equipment and the third cooling power of the refrigeration equipment when the heating equipment and the refrigeration equipment are adjusted simultaneously; according to the preset temperature adjustment time, the first real-time working power, the second real-time working power and the third real-time working power, respectively calculate the first energy consumption corresponding to the first real-time working power, the second energy consumption corresponding to the second real-time working power and the third energy consumption corresponding to the third real-time working power; according to the first energy consumption, the second energy consumption and the third energy consumption, select the fourth real-time working power corresponding to the minimum energy consumption as the real-time working power of the temperature adjustment device.

[0011] By adopting the above technical scheme, by respectively calculating the real-time working power of the temperature control equipment and its corresponding energy consumption under different temperature control schemes, and selecting the real-time working power corresponding to the minimum energy consumption as the working power of the temperature control equipment, it can not only effectively reduce the energy consumption in the entire test process and reduce unnecessary energy waste, but also reduce the test cost in long-term operation and improve energy utilization efficiency.

[0012] In combination with some embodiments of the first aspect, in some embodiments, after the step of generating the power-on test result of the target heating cable after detecting that the target power-on test is completed, the method also includes: when the power-on test result is qualified, according to the target cable image data of the target heating cable, identifying the outer sheath damage area, the outer sheath aging degree and the insulation layer aging degree of the target heating cable; according to the outer sheath damage area, the outer sheath aging degree, the insulation layer aging degree and the remaining test area set of the target heating cable, determining the test hazard value of each test area in the remaining test area set, the remaining test area set being a set of test areas in all test areas in the preset test plan of the target heating cable that have not yet been subjected to the power-on test; when there are one or more test hazard values ​​in the test hazard value that do not exceed the preset hazard threshold, selecting the corresponding test area with the smallest test hazard value as the next test area of ​​the target heating cable.

[0013] By adopting the above technical scheme, when the result of the power-on test is qualified, the damaged area of ​​the outer sheath, the degree of aging of the outer sheath and the degree of aging of the insulation layer of the target heating cable are identified, and based on these data and the remaining test area set of the heating cable, the test hazard value of the heating cable continuing to perform the power-on test in each test area in the remaining test area set is calculated. When there are one or more test hazard values ​​in the test hazard value that do not exceed the preset hazard threshold, the corresponding test area with the smallest test hazard value is selected as the next test area of ​​the target heating cable, which can effectively reduce the possibility of safety accidents caused by cable aging or damage during the test process and improve the safety of the test process.

[0014] In combination with some embodiments of the first aspect, in some embodiments, when there are one or more test hazard values ​​in the test hazard value that do not exceed the preset hazard threshold, after the step of selecting the corresponding test area with the smallest test hazard value as the next test area of ​​the target heating cable, the method also includes: determining the first color of the test indicator light, the second color of the abnormal indicator light and the third color of the area indicator light corresponding to the target heating cable according to the power-on test result, the abnormal condition of the sensor and the next test area, the test indicator light is used to display the power-on test result of the target heating cable, the abnormal condition of the sensor corresponding to the target heating cable, and the area indicator light is used to display the next test area of ​​the target heating cable; according to the first color, the second color and the third color, sending corresponding control instructions to the test indicator light, the abnormal condition indicator light and the area indicator light in sequence.

[0015] By adopting the above technical solution, the key information in the test, namely the power-on test results, sensor abnormalities and the next test area, can be intuitively displayed to the staff through different indicator lights. The staff can directly perform subsequent operations according to the guidance of the indicator lights, saving the staff's time in obtaining work information and improving the efficiency of the entire power-on test process of the heating cable.

[0016] In combination with some embodiments of the first aspect, in some embodiments, after the step of collecting real-time test data, cable image data and real-time ambient temperature of each heating cable in the target test area during the power-on test, the method also includes: collecting a temperature image of a preset thermometer in the target test sub-area corresponding to the target heating cable in the target test area; identifying the actual temperature of the preset thermometer based on the temperature image; obtaining the real-time temperature collected by the temperature sensor corresponding to the preset thermometer; when the temperature difference between the actual temperature and the real-time temperature exceeds a preset error range, calibrating the surface temperature data in the target real-time test data corresponding to the target heating cable based on the temperature difference to obtain calibrated temperature data, and setting the working state of the temperature sensor corresponding to the target heating cable to an abnormal state; and updating the surface temperature data in the target real-time test data based on the calibrated temperature data.

[0017] By adopting the above technical solution, by comparing the actual temperature measured by the thermometer and the real-time temperature collected by the temperature sensor, when it is found that the temperature difference exceeds the preset error range, that is, the temperature sensor fails and the collected data is inaccurate, the data collected by the temperature sensor can be calibrated in time, which can improve the accuracy of test data collection and thus improve the accuracy of power-on test results. At the same time, the working state of the temperature sensor is marked as abnormal, so that the staff can deal with the faulty temperature sensor in time.

[0018] In combination with some embodiments of the first aspect, in some embodiments, after the step of generating the power-on test result of the target heating cable after detecting that the target power-on test is completed, the method also includes: when the power-on test result is unqualified, determining the unqualified cause of the target heating cable according to abnormal data of the target heating cable during the power-on test; obtaining historical test records of other heating cables with the same cable model as the target heating cable in the total historical test records; determining the total frequency of the unqualified cause appearing in the historical test records according to the historical test records and the unqualified cause; when the total frequency exceeds a preset frequency threshold, sending a command to stop production to the heating cable production machine corresponding to the cable model.

[0019] By adopting the above technical solution, when the result of the power-on test of the heating cable is unqualified, the specific cause of the unqualified can be quickly and accurately determined by analyzing the abnormal data of the target heating cable during the test, avoiding the blindness of the traditional troubleshooting method. When the frequency of occurrence of the unqualified cause exceeds the preset threshold, the production of the heating cable is stopped, which can avoid the waste of resources and cost increase caused by continuing to produce unqualified products.

[0020] In a second aspect, an embodiment of the present application provides a test data acquisition and control system, comprising a temperature control device, a sensor, and a server, wherein the server comprises: one or more processors and a memory; the memory is coupled to the one or more processors, the memory is used to store computer program code, the computer program code comprises computer instructions, the one or more processors call the computer instructions to enable the test data acquisition and control system to execute the method described in the first aspect and any possible implementation method of the first aspect.

[0021] In a third aspect, an embodiment of the present application provides a computer-readable storage medium, comprising instructions. When the instructions are executed on a test data acquisition control system, the test data acquisition control system executes the method described in the first aspect and any possible implementation method of the first aspect.

[0022] In a fourth aspect, the present application provides a computer program product. When the computer program product is run on a test data acquisition control system, the test data acquisition control system executes the method described in the first aspect and any possible implementation of the first aspect.

[0023] It can be understood that the test data acquisition control system provided in the second aspect, the storage medium provided in the third aspect, and the computer program product provided in the fourth aspect are all used to execute the method provided in the present application. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding method, and will not be repeated here.

[0024] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages: 1. When it is detected that the actual test temperature of a heating cable used alone has a large error with the preset test temperature, the present application adjusts the actual test temperature of the heating cable through a temperature control device so that the actual test temperature and the preset test temperature of the heating cable are maintained within a certain error range, so that the data collected based on the actual test temperature can truly reflect the performance of the heating cable used alone at the preset test temperature, reduce the impact of the inconsistency between the actual test temperature and the preset test temperature on the accuracy of the test results, and improve the accuracy of the test results of the power-on test of the heating cable used alone under extreme temperature conditions.

[0025] 2. The present application identifies the damaged area of ​​the outer sheath, the degree of aging of the outer sheath and the degree of aging of the insulation layer of the target heating cable, and based on these data and the remaining test area set of the heating cable, calculates the test hazard value of the heating cable continuing to perform power-on tests in each test area in the remaining test area set. When there are one or more test hazard values ​​in the test hazard value that do not exceed the preset hazard threshold, the corresponding test area with the smallest test hazard value is selected as the next test area of ​​the target heating cable, which effectively reduces the possibility of safety accidents caused by cable aging or damage during the test process and improves the safety of the test process.

[0026] 3. This application compares the actual temperature measured by the thermometer with the real-time temperature collected by the temperature sensor. When it is detected that the temperature difference exceeds the preset error range, that is, the temperature sensor fails and the collected data is inaccurate, the data collected by the temperature sensor is calibrated in time, which can improve the accuracy of test data collection and thus improve the accuracy of the power-on test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a system architecture to which the heating cable test data acquisition control method in the embodiment of the present application can be applied; Figure 2 It is a flow chart of a heating cable test data acquisition control method in an embodiment of the present application; Figure 3 This is another flow chart of the heating cable test data acquisition control method in the embodiment of the present application; Figure 4 It is a schematic diagram of an exemplary hardware structure of the test data acquisition and control system in the embodiment of the present application. DETAILED DESCRIPTION

[0028] The terms used in the following embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to be used as limitations to the present application. As used in the specification and appended claims of the present application, the singular expressions "one", "a kind of", "said", "above", "the" and "this" are intended to also include plural expressions, unless there is a clear indication to the contrary in the context. It should also be understood that the term "and / or" used in the present application refers to any or all possible combinations comprising one or more listed items.

[0029] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as suggesting or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features, and in the description of the embodiments of the present application, unless otherwise specified, "plurality" means two or more.

[0030] Heating cable is a device that efficiently converts electrical energy into thermal energy. It is usually composed of a heating core wire, an insulating layer and an outer sheath. Its working principle is based on Joule's law. When current passes through a heating core wire with a certain resistance, heat is generated. According to the heating characteristics, heating cables can be divided into two categories: constant power and self-limiting temperature. The former outputs stable heat, and the latter can automatically adjust the power as the ambient temperature changes. The working environment temperature of the heating cable is generally -20~50℃. In some special industrial application scenarios, specially designed and protected heating cables can adapt to higher or lower temperature environments, such as high temperatures of about 200℃ and low temperatures of -60℃. During the process of the heating cable being powered on, for the heating cable with constant power heating, the temperature emitted by itself can be 120℃, 205℃, 250℃, etc.; for the self-limiting temperature heating cable, the temperature emitted by itself is generally 65℃-105℃.

[0031] Figure 1 It is a structural schematic diagram of a system architecture to which the heating cable test data acquisition control method in the embodiment of the present application can be applied.

[0032] See also Figure 1 ,The test data acquisition and control system includes sensors, image acquisition equipment, ,temperature control equipment and servers.

[0033] As the core component of the system, the server is used to analyze and process the data collected by the sensor and image acquisition device and send control instructions to the temperature control device. The sensor is used to collect the test data of the heating cable during the power-on test and transmit the collected test data to the server. The image acquisition device is used to collect the image data of the heating cable during the power-on test and transmit the collected image data to the server. The temperature control device is used to receive the control instructions transmitted by the server and adjust the operating power of the device according to the control instructions.

[0034] Among them, sensors include voltage sensors, current sensors, temperature sensors, etc. Temperature control equipment includes refrigeration equipment and heating equipment, etc.

[0035] Through the above system architecture, the test data acquisition and control system can adjust the actual test temperature of the heating cable through the temperature control equipment, so that the actual test temperature of the heating cable and the preset test temperature are kept within a certain error range, reducing the interference of the heat released by other heating cables in the same test area on the actual test temperature of the heating cable.

[0036] In the related art, the common practice of heating cable power-on test is to place multiple heating cables in the same test area and conduct power-on test at the same time. During the test, the test data of the preset heating cables are collected by sensors, and the performance of the heating cables is evaluated based on the collected test data. However, since some heating cables are used alone, when multiple heating cables are simultaneously powered on in the same area, each cable will release heat to the outside during the test, resulting in that when these heating cables are powered on at extreme temperatures, the heat released by other heating cables will interfere with the test temperature around these heating cables, causing the actual test temperature around these heating cables to deviate from the preset test temperature. At this time, the data collected based on the actual test temperature will have errors, and cannot truly reflect the performance of these individually used heating cables at the preset test temperature, affecting the accuracy of the test results, and further affecting the accuracy of the evaluation results of the performance evaluation of these individually used heating cables.

[0037] In general, in order to ensure the accuracy of the performance evaluation results of these individually used heating cables, each heating cable is physically isolated by means of an isolation board to prevent the heat released by other heating cables from interfering with the test temperature around these heating cables. However, there will still be heat conduction between the isolation boards of different materials, and some heat will still be transferred to the isolated heating cables, causing the actual test temperature to deviate from the preset test temperature. If the interference of the heat released by other heating cables on the test temperature around these heating cables is to be reduced to a very small level, multiple insulation boards with excellent thermal insulation performance or a separate power-on test for each heating cable are required. However, insulation boards with excellent thermal insulation performance are generally expensive, which will greatly increase the cost of the power-on test for the heating cables. At the same time, a separate power-on test for each heating cable will greatly reduce the efficiency of the power-on test for the heating cables. To improve the efficiency of the power-on test for each heating cable when the power-on test is performed on each heating cable separately, multiple power-on test equipment is required, which will also greatly increase the cost of the power-on test for the heating cables.

[0038] By adopting the heating cable test data acquisition and control method in the embodiment of the present application, when it is detected that the actual test temperature of the heating cable used alone has a large error with the preset test temperature, the actual test temperature of the heating cable is adjusted by the temperature control device, so that the actual test temperature and the preset test temperature of the heating cable are maintained within a certain error range, so that the data collected based on the actual test temperature can truly reflect the performance of the heating cable used alone at the preset test temperature, reduce the influence of the inconsistency between the actual test temperature and the preset test temperature on the accuracy of the test results, and improve the accuracy of the test results of the power-on test of the heating cable used alone under extreme temperature conditions while saving the test cost and ensuring the efficiency of the power-on test.

[0039] Combine the following Figure 2 To illustrate the method of the embodiment of the present application.

[0040] See also Figure 2 , which is a flow chart of a heating cable test data acquisition control method in an embodiment of the present application.

[0041] S201, collecting real-time test data, cable image data and real-time ambient temperature of each heating cable in the target test area during the power-on test.

[0042] The voltage, current, surface temperature and real-time ambient temperature of each heating cable in the target test area during the power-on test are collected by sensors, and the cable image data of each heating cable is collected by image acquisition equipment.

[0043] The test data include the surface temperature, voltage and current of the heating cable.

[0044] S202: Determine the predicted ambient temperature of each heating cable according to the real-time test data and the preset test ambient temperature.

[0045] The predicted ambient temperature is the ambient temperature collected by the temperature sensor corresponding to the heating cable when only one heating cable is powered on for testing in the target test area and the test ambient temperature is the preset test ambient temperature.

[0046] Specifically, the predicted ambient temperature of each heating cable is determined by a pre-trained heat transfer model. The construction of this heat transfer model is based on heat transfer principles such as heat conduction described by Fourier's law, heat convection embodied by Newton's cooling law, and heat radiation presented by Stefan-Boltzmann's law. The voltage, current, preset test ambient temperature, and the relative position relationship between the temperature sensor and the heating cable (such as the distance between the temperature sensor and the heating cable, etc.) are used as input parameters. By collecting a large number of actual data under different working conditions (covering various voltage and current combinations, different preset test ambient temperatures, and actual measured ambient temperature data corresponding to the relative positions of various temperature sensors and heating cables), these actual data are compared and optimized with the model simulation results, and the parameters of the model are continuously adjusted to improve the accuracy of the model simulation of the heat transfer process, so that the predicted ambient temperature output by the model is close to the actual measured value, and accurate and reliable ambient temperature prediction is achieved.

[0047] The voltage, current, and relative position relationship between the temperature sensor and the heating cable in the real-time test data are input into the heat transfer model. The model first determines the heat generation of the heating cable based on the voltage and current using Joule's law (or power formula to calculate heat generation), and combines the preset test environment temperature as the starting condition, calculates the heat conduction process according to Fourier's law, determines the heat convection according to Newton's cooling law, and calculates the heat radiation according to Stefan-Boltzmann's law. At the same time, the influence of the relative position relationship between the temperature sensor and the heating cable on the heat weight of the three heat transfer methods is considered, and these heat transfer processes and interactions are comprehensively simulated and calculated, and finally the predicted ambient temperature is output, that is, the ambient temperature collected by the temperature sensor when only one heating cable is powered on in the target test area and the test environment temperature is the preset value.

[0048] S203. Determine the real-time working power of the temperature regulating device corresponding to the sub-test area where each heating cable is located according to the predicted ambient temperature and the real-time ambient temperature.

[0049] Among them, the sub-test area is obtained by dividing the target test area into areas, and each sub-test area corresponds to a temperature control device. The temperature control device includes a refrigeration device and a heating device. The real-time working power is the working power that the temperature control device needs to adjust so that the real-time ambient temperature and the predicted ambient temperature are within a certain error range.

[0050] Specifically, the difference between the predicted ambient temperature and the real-time ambient temperature is calculated. If the difference is within a preset error range, the real-time working power of the temperature regulating device corresponding to the sub-test area where each heating cable is located is determined as the current working power of the temperature regulating device.

[0051] If the difference is not within the preset error range, and the difference is positive, it means that the real-time ambient temperature is lower than the predicted ambient temperature, and the error between the real-time ambient temperature and the predicted ambient temperature is large, and the temperature needs to be increased by the heating device. Obtain the pre-established temperature difference-heating power change mapping relationship, which is constructed based on a large amount of experimental data collected in advance. During the experiment, for different sub-test areas, considering factors such as their heat capacity, the heating efficiency of the heating equipment used, and the environmental heat loss, record the heating power changes required to stabilize the temperature of the sub-test area within the preset adjustment time under different temperature differences. Through the analysis and fitting of these experimental data, a mapping table, mapping function or mathematical model that can reflect the corresponding relationship between the temperature difference and the heating power change is obtained and stored in the system. According to the difference, the corresponding heating equipment working power change is found in the mapping relationship, and according to the power change and the current working power of the heating equipment, the heating power of the heating equipment that can increase the real-time ambient temperature to the predicted ambient temperature within the preset adjustment time is calculated, and the cooling power of the cooling equipment is the current working power of the cooling equipment.

[0052] If the difference is not within the preset error range, and the difference is negative, it means that the real-time ambient temperature is higher than the predicted ambient temperature, and the error between the real-time ambient temperature and the predicted ambient temperature is large, and the temperature needs to be lowered by refrigeration equipment. Obtain the pre-established temperature difference-cooling power mapping relationship. The method for establishing this relationship is consistent with the method for establishing the temperature difference-heating power change mapping relationship, and factors such as the heat capacity of the sub-test area, the cooling efficiency of the refrigeration equipment, and the environmental heat loss are taken into account. According to the difference, the corresponding change in the working power of the refrigeration equipment is found in the mapping relationship. According to the power change and the current working power of the refrigeration equipment, the cooling power of the refrigeration equipment that can reduce the real-time ambient temperature to the predicted ambient temperature within the preset adjustment time is calculated, and the heating power of the heating equipment is the current working power of the heating equipment.

[0053] S204, controlling the temperature regulating device to operate according to the real-time working power, so that the actual test environment temperature of each heating cable and the preset test environment temperature are within a certain error range.

[0054] According to the real-time working power of the temperature regulating device, a corresponding control instruction is determined and sent to the temperature regulating device. After receiving the control instruction, the temperature regulating device operates according to the real-time working power so that the actual test environment temperature of each heating cable is within a certain error range with the preset test environment temperature.

[0055] S205. Determine the real-time working status of the target heating cable according to the target real-time test data and the target cable image data corresponding to the target heating cable.

[0056] The real-time working status includes normal and abnormal.

[0057] Specifically, a normal reference range of test data of a heating cable corresponding to the cable model of the target heating cable under normal working conditions is obtained. The voltage, current, surface temperature and other values ​​in the target real-time test data corresponding to the target heating cable are compared with the corresponding normal reference range. If there is test data exceeding the normal reference range, it is determined that the first working state of the target heating cable is abnormal; otherwise, it is determined that the first working state of the target heating cable is normal.

[0058] At the same time, according to the target cable image data, the aging condition, outer sheath damage condition and insulation layer damage condition of the heating cable are identified through image recognition technology (such as deep learning-based convolutional neural network model, edge detection algorithm, template matching method, etc.). Taking the convolutional neural network model as an example, the model is trained based on a large number of heating cable images with different aging, outer sheath damage and insulation layer damage conditions. These images are annotated with data such as aging area and aging degree, outer sheath damage area and damage area, insulation layer damage area, etc. During the training process, the convolutional neural network records the appearance characteristics of the normal heating cable by learning these annotated images, including the smooth surface and uniform color of the outer sheath, and the relatively uniform appearance of the insulation layer through the outer sheath. At the same time, the model will also learn the characteristic changes during aging, such as cracking and fading caused by aging of the outer sheath, color changes and transparency changes caused by aging of the insulation layer, as well as the characteristics of damage, such as irregular edges and fracture marks of the outer sheath damage, and the internal structure that may be exposed when the insulation layer is damaged.

[0059] Input the target cable image data into the model, and the model will perform comprehensive feature extraction and analysis on the image. The model first identifies the outer sheath based on the features learned in training, determines its aging condition through features such as texture and color, and calculates the proportion of the aging area to the total area of ​​the outer sheath to quantify the degree of aging. At the same time, the outer sheath is damaged to identify whether there are damage features such as irregular edges and fracture marks. When damage is detected, the damaged area of ​​the damaged area is determined by pixel calculation and other methods; since the outer sheath is on the outer layer of the insulation layer, the model will then identify the insulation layer at the damaged area, and determine the degree of insulation layer aging from changes in color, transparency, etc. For insulation layer damage, if the internal structure of the insulation layer can be observed at the damaged part of the outer sheath, or the insulation layer has abnormal color and texture changes, it is determined that the insulation layer is damaged.

[0060] The aging degree of the outer sheath and the insulation layer, the damaged area of ​​the outer sheath and the corresponding threshold are compared. If any abnormal threshold condition is met or the insulation layer is damaged, the second working state is determined to be abnormal and the abnormal reason is recorded, otherwise it is normal. The abnormal reasons include insulation layer damage, severe aging of the insulation layer, severe damage of the outer sheath, and severe aging of the outer sheath.

[0061] Finally, the first working state determined based on the test data and the second working state determined based on the image recognition are combined. If both are normal, the real-time working state of the target heating cable is determined to be normal; if either working state is abnormal, the real-time working state is determined to be abnormal.

[0062] S206. When the real-time working status is abnormal, stop the target power-on test of the target heating cable.

[0063] When the real-time working state is abnormal, a stop operation command is sent to the temperature adjustment device and the power supply device of the target heating cable. After receiving the command, the power supply device stops supplying power to the target heating cable to stop the target power-on test.

[0064] S207. After detecting that the target power-on test is completed, generate the power-on test result of the target heating cable.

[0065] Specifically, when it is detected that the power supply device of the target heating cable stops operating, the power-on test result of the target heating cable is determined according to the real-time working state of the target heating cable. If the real-time working state is abnormal, the power-on test result is determined to be unqualified and the reason for the unqualified is recorded; otherwise, the power-on test result is determined to be qualified.

[0066] Among them, the reasons for failure include abnormal test data, damaged insulation layer, severe aging of the insulation layer, severe damage to the outer sheath, and severe aging of the outer sheath. If the first working state is abnormal and the second working state is normal, the reason for failure is determined to be abnormal test data; if the first working state is normal and the second working state is abnormal, the abnormal reason corresponding to the second working state is used as the reason for failure; if both the first working state and the second working state are abnormal, the reason for failure is determined to be abnormal test data and the abnormal reason corresponding to the second working state.

[0067] In the embodiment of the present application, when it is detected that the actual test temperature of the heating cable used alone has a large error with the preset test temperature, the actual test temperature of the heating cable is adjusted by the temperature control device, so that the actual test temperature of the heating cable and the preset test temperature are kept within a certain error range, so that the data collected based on the actual test temperature can truly reflect the performance of the heating cable used alone at the preset test temperature, reduce the impact of the inconsistency between the actual test temperature and the preset test temperature on the accuracy of the test results, and improve the accuracy of the test results of the power-on test of the heating cable used alone under extreme temperature conditions. At the same time, the collected real-time test data and cable image data are automatically processed and analyzed, and the power-on test results of the heating cable are generated, which reduces the time for manual processing and analysis of data and improves the efficiency and accuracy of test data processing.

[0068] Combine the following Figure 3 To further illustrate the method of the embodiment of the present application.

[0069] See also Figure 3 , is another flow chart of the heating cable test data acquisition control method in the embodiment of the present application.

[0070] S301, collecting real-time test data, cable image data and real-time ambient temperature of each heating cable in the target test area during the power-on test.

[0071] Step S301 and Figure 2 Step S201 in the illustrated embodiment is similar, and the description in step S201 may be referred to, which will not be repeated here.

[0072] S302, collecting a temperature image of a preset thermometer in a target test sub-area corresponding to the target heating cable in the target test area.

[0073] The temperature image of the preset thermometer in the target test sub-area corresponding to the target heating cable in the target test area is acquired by the image acquisition device.

[0074] S303: Identify the actual temperature of the preset thermometer according to the temperature image.

[0075] Specifically, the image is preprocessed first, and then edge detection algorithms (such as the Canny algorithm) are used to extract edge information of the thermometer in the temperature image, accurately locate the outline of the thermometer and the edge between the scale line and the indication. Based on this edge information, morphological operations such as dilation and erosion are used to further enhance the edge features.

[0076] Then, the temperature indication is recognized by using template matching or character recognition models in deep learning. If template matching is used, a template library containing various possible temperature indication characters must be prepared in advance, and the indication characters segmented from the image are compared with the templates in the template library one by one, and the similarity is calculated to find the best matching template to determine the indication. If a deep learning model is used, such as a convolutional neural network (CNN), a large number of thermometer images with temperature indications must be used in advance to train the model. The trained model can directly and accurately recognize the indication in the temperature image.

[0077] Finally, the actual temperature of the preset thermometer is determined by combining the scale characteristics of the thermometer and the identified indication.

[0078] S304: Acquire the real-time temperature collected by the temperature sensor corresponding to the preset thermometer.

[0079] According to the unique identifier of the temperature sensor corresponding to the preset thermometer, the real-time temperature collected by the corresponding temperature sensor is obtained, wherein the relative relationship between the preset thermometer and the corresponding temperature sensor is adjacent.

[0080] S305. When the temperature difference between the actual temperature and the real-time temperature exceeds a preset error range, the surface temperature data in the target real-time test data corresponding to the target heating cable is calibrated according to the temperature difference to obtain calibration temperature data.

[0081] When the temperature difference between the actual temperature and the real-time temperature exceeds the preset error range, the surface temperature data in the target real-time test data corresponding to the target heating cable is calibrated according to the temperature difference to obtain the calibrated temperature data, and the working state of the temperature sensor corresponding to the target heating cable is set to an abnormal state.

[0082] Specifically, when the temperature difference between the actual temperature and the real-time temperature exceeds the preset error range, the surface temperature data in the target real-time test data corresponding to the target heating cable is calibrated according to the preset calibration rule. The calibration rule can be calibration temperature data = surface temperature data + temperature difference, or it can be based on compensation function calibration, and a compensation function based on temperature difference is established. The function can be obtained by fitting a large amount of experimental data. This method can more carefully reflect the complex relationship between the temperature difference and the calibration value, and is particularly suitable for the case where the relationship between the temperature difference and the calibration value is not simply linear or piecewise linear, which is not limited here.

[0083] After completing the surface temperature data calibration, the working state of the temperature sensor corresponding to the target heating cable is set to an abnormal state.

[0084] S306: Update the surface temperature data in the target real-time test data according to the calibration temperature data.

[0085] According to the calibration temperature data, the surface temperature data in the target real-time test data is replaced with the corresponding calibration temperature data.

[0086] S307. Calculate the predicted ambient temperature of each heating cable using an ambient temperature estimation formula.

[0087] The real-time test data, the preset test environment temperature, the power-on test duration of each heating cable, and the distance between the heating cable and the corresponding temperature sensor are substituted into the environment temperature estimation formula to obtain the predicted environment temperature of each heating cable.

[0088] Among them, the ambient temperature estimation formula is: ;in, The heating cable is tested for a duration of The predicted ambient temperature at is the preset test environment temperature, is the duration of the power-on test, The heating cable is tested for a duration of The voltage at The heating cable is tested for a duration of The current when is the material density of the heating cable, is the specific heat capacity of the heating cable material, is the cross-sectional area of ​​the heating cable, The distance between the sensor for collecting ambient temperature and the heating cable, is the standard deviation of the temperature distribution, is the temperature correction constant.

[0089] In the ambient temperature estimation formula, The preset test environment temperature is the starting reference value for the entire temperature estimation. It represents the ambient temperature conditions set or measured in the target test area before the heating cable energization test begins.

[0090] in the formula Part of the test is to test the heating cable from the start of power on to the end of power on. Calculation of the change in ambient temperature due to self-heating and heat transfer processes.

[0091] in, It reflects the relationship between the heating characteristics of the heating cable and its own physical properties. Indicates that the heating cable is powered on for The larger the instantaneous electric power is, the more heat the cable generates per unit time. It comprehensively reflects the physical properties of the heating cable, such as material density, specific heat capacity and cross-sectional area. The material density affects the mass of the cable per unit volume, the specific heat capacity determines the amount of heat that the cable per unit mass needs to absorb to increase the unit temperature, and the cross-sectional area is related to the heat dissipation and heat distribution of the cable. The larger the product of these three physical quantities, the stronger the cable's ability to absorb and store heat. Under the same heating power, its temperature change is relatively small, and the impact on the ambient temperature will also be different. This ratio reflects the relative relationship between the heat generated by the cable per unit time and its own heat storage capacity, which directly affects the heating effect of the heating cable on the surrounding environment.

[0092] The distance between the sensor for collecting ambient temperature and the heating cable and the effect of the standard deviation of the temperature distribution on the ambient temperature estimation are shown. The distance between the sensor and the heating cable determines the degree of heat loss during the transfer from the heating cable to the sensor. Generally speaking, the greater the distance, the more heat is lost during the transfer due to heat exchange with the surrounding medium, and the smaller the temperature change affected by the heating cable measured by the sensor. The standard deviation of the temperature distribution describes the degree of temperature dispersion in space. The larger the standard deviation, the more uneven the temperature distribution in the test area, which makes the relationship between the temperature value collected by the sensor and the actual temperature around the heating cable more complicated, thus affecting the accurate estimation of the ambient temperature.

[0093] As a temperature correction constant, it is a coefficient determined after comprehensive consideration of many actual working conditions. These factors include but are not limited to the air flow conditions in the test area, the thermal conductivity of the environment, and whether there are other heat or cold sources.

[0094] is the power-on test duration. As time goes by, the heating cable continues to generate heat, and the heat generated by it accumulates continuously and affects the ambient temperature. The power-on test duration, as a time variable, reflects the dynamic process of heat accumulation and temperature change over time.

[0095] In general, the entire ambient temperature estimation formula comprehensively and meticulously considers multiple factors such as the heat generation and physical properties of the heating cable itself, the distance between the temperature sensor and the cable, the temperature distribution characteristics, and the actual working conditions. Through the synergistic effect of various parameters, the predicted ambient temperature of each heating cable under different power-on test durations can be estimated more scientifically and accurately.

[0096] S308. Calculate the first real-time operating power, the second real-time operating power and the third real-time operating power of the temperature adjustment device corresponding to the sub-test area where each heating cable is located.

[0097] According to the predicted ambient temperature, the real-time ambient temperature and the preset temperature adjustment time, the first real-time working power, the second real-time working power and the third real-time working power of the temperature adjustment device corresponding to the sub-test area where each heating cable is located are calculated respectively.

[0098] Among them, the first real-time working power includes the first heating power of the heating equipment and the first cooling power of the cooling equipment when only the heating equipment is adjusted, the second real-time working power includes the second heating power of the heating equipment and the second cooling power of the cooling equipment when only the cooling equipment is adjusted, and the third real-time working power includes the third heating power of the heating equipment and the third cooling power of the cooling equipment when both the heating equipment and the cooling equipment are adjusted at the same time.

[0099] Specifically, the difference between the predicted ambient temperature and the real-time ambient temperature is calculated. If the difference is within a preset error range, the first real-time working power, the second real-time working power and the third real-time working power of the temperature regulating device corresponding to the sub-test area where each heating cable is located are determined as the current working power of the temperature regulating device.

[0100] If the difference is not within the preset error range, the corresponding heating equipment working power change is searched in the mapping relationship according to the absolute value of the difference based on the pre-established temperature difference-heating power change mapping relationship. The first heating power of the heating equipment is calculated based on the working power change, the positive or negative situation of the difference, and the current working power of the heating equipment, and the first cooling power of the cooling equipment is the current working power of the cooling equipment.

[0101] According to the pre-established mapping relationship between temperature difference and cooling power change, the corresponding change in the working power of the cooling equipment is found in the mapping relationship according to the absolute value of the difference. According to the change in working power, the positive or negative condition of the difference and the current working power of the cooling equipment, the second cooling power of the cooling equipment is calculated, and the second heating power of the heating equipment is the current working power of the heating equipment.

[0102] According to the absolute value of the difference, divide the absolute value by two to obtain the heating temperature difference and the cooling temperature difference. If the predicted ambient temperature is greater than the real-time ambient temperature, the heating temperature difference is positive and the cooling temperature difference is negative; otherwise, the heating temperature difference is negative and the cooling temperature difference is positive. Respectively look up the heating temperature difference and the cooling temperature difference in the corresponding preset mapping relationship for the corresponding heating equipment working power change and cooling equipment working power change. According to the heating equipment working power change, the positive and negative situation of the heating temperature difference and the current working power of the heating equipment, calculate the third heating power of the heating equipment. According to the cooling equipment working power change, the positive and negative situation of the cooling temperature difference and the current working power of the cooling equipment, calculate the third cooling power of the cooling equipment.

[0103] Among them, when the difference is positive, the working power of the corresponding device increases by the corresponding change; when the difference is negative, the working power of the corresponding device decreases by the corresponding change.

[0104] S309: Calculate the first energy consumption, the second energy consumption, and the third energy consumption.

[0105] According to the preset temperature adjustment time, the first real-time working power, the second real-time working power and the third real-time working power, the first energy consumption corresponding to the first real-time working power, the second energy consumption corresponding to the second real-time working power and the third energy consumption corresponding to the third real-time working power are calculated respectively.

[0106] Specifically, according to the heating power of the heating device and the cooling power of the cooling device, the first energy consumption, the second energy consumption and the third energy consumption are calculated by a preset energy consumption calculation formula, wherein the energy consumption calculation formula can be the heating power multiplied by the preset temperature adjustment time plus the cooling power multiplied by the preset temperature adjustment time.

[0107] S310: According to the first energy consumption, the second energy consumption and the third energy consumption, select a fourth real-time working power corresponding to the minimum energy consumption as the real-time working power of the temperature adjustment device.

[0108] The first energy consumption, the second energy consumption and the third energy consumption are compared, and a fourth real-time operating power corresponding to the minimum energy consumption is selected as the real-time operating power of the temperature adjustment device, wherein the fourth real-time operating power is one of the first, second and third real-time operating powers.

[0109] S311. Control the temperature regulating device to operate according to the real-time operating power.

[0110] S312: Determine the real-time working status of the target heating cable.

[0111] S313. When the real-time working status is abnormal, stop the target power-on test of the target heating cable.

[0112] S314. After detecting that the target power-on test is completed, generate the power-on test result of the target heating cable.

[0113] Steps S311-S314 and Figure 2 Steps S204 to S207 in the illustrated embodiment are similar, and the descriptions of steps S204 to S207 may be referred to, and will not be repeated here.

[0114] S315. When the power-on test result is qualified, determine the outer sheath damage area, outer sheath aging degree and insulation layer aging degree of the target heating cable.

[0115] When the result of the power-on test is qualified, the damaged area of ​​the outer sheath, the aging degree of the outer sheath and the aging degree of the insulation layer of the target heating cable are identified according to the target cable image data of the target heating cable.

[0116] Step S315 and Figure 2 Step S205 in the illustrated embodiment is similar, and reference may be made to the description in step S205 , which will not be repeated here.

[0117] S316. Determine the test hazard value of each test area in the remaining test area set.

[0118] According to the damaged area of ​​the outer sheath, the aging degree of the outer sheath, the aging degree of the insulation layer and the remaining test area set of the target heating cable, the test hazard value of each test area in the remaining test area set is determined.

[0119] The remaining test area set is a set of test areas in all test areas in the preset test plan of the target heating cable that have not been subjected to power-on test.

[0120] Specifically, according to the preset test plan and test records of the target heating cable, the remaining test area set of the target heating cable is determined. The preset weight of the outer sheath damage area, the preset weight of the outer sheath aging degree, and the preset weight of the insulation layer aging degree corresponding to each test area in the remaining test area set are obtained. According to the preset weight of the outer sheath damage area, the preset weight of the outer sheath aging degree, the preset weight of the insulation layer aging degree, the outer sheath damage area, the outer sheath aging degree, and the insulation layer aging degree, the test hazard value of each test area in each remaining test area set is obtained through weighted calculation.

[0121] S317. When there are one or more test hazard values ​​in the test hazard values ​​that do not exceed the preset hazard threshold, the corresponding test area with the smallest test hazard value is selected as the next test area of ​​the target heating cable.

[0122] When one or more test hazard values ​​do not exceed the preset hazard threshold value among the test hazard values, the corresponding test area with the smallest test hazard value is selected as the next test area of ​​the target heating cable. When one or more test hazard values ​​do not exceed the preset hazard threshold value among the test hazard values, information on stopping the test plan of the target heating cable is sent to the corresponding staff.

[0123] S318. Determine the first color of the test indicator light, the second color of the abnormal indicator light, and the third color of the area indicator light corresponding to the target heating cable.

[0124] According to the power-on test results, the abnormal conditions of the sensor and the next test area, the first color of the test indicator light, the second color of the abnormal indicator light and the third color of the area indicator light corresponding to the target heating cable are determined.

[0125] Among them, the test indicator light is used to display the power-on test result of the target heating cable, the abnormal indicator light is used to display the abnormal situation of the sensor corresponding to the target heating cable, and the area indicator light is used to display the next test area of ​​the target heating cable.

[0126] Specifically, according to the first color correspondence table of the test indicator light, the second color correspondence table of the abnormal indicator light and the third color correspondence table of the area indicator light, the first color corresponding to the power-on test result, the second color corresponding to the abnormal condition of the sensor and the third color corresponding to the next test area are obtained respectively.

[0127] S319, sending corresponding control instructions to the test indicator light, abnormal indicator light and area indicator light.

[0128] According to the first color, the second color and the third color, the corresponding first control instruction, the second control instruction and the third control instruction are determined, the first control instruction is sent to the test indicator light, the second control instruction is sent to the abnormal indicator light, and the third control instruction is sent to the area indicator light.

[0129] S320. When the power-on test result is unqualified, determine the reason for the unqualified target heating cable.

[0130] When the power-on test result is unqualified, the unqualified reason recorded when the power-on test result is determined to be unqualified in step S314 is obtained. The unqualified reason is determined based on abnormal data of the target heating cable during the power-on test.

[0131] S321. Obtain historical test records of other heating cables with the same cable model as the target heating cable in the total historical test records.

[0132] According to the cable model of the target heating cable, historical test records of other heating cables with the same cable model as the target heating cable are searched in the total historical test records stored in the memory.

[0133] S322. Determine the total frequency of non-conformance reasons in historical test records.

[0134] Based on historical test records and reasons for failure, determine the total frequency of reasons for failure in historical test records.

[0135] Specifically, extract the unqualified test records with unqualified test results in the historical test records. Traverse the unqualified reasons in the unqualified test records. When there is only one unqualified reason for the target heating cable, compare the unqualified reason with the unqualified reason for the target heating cable. When there is a certain unqualified reason among the unqualified reasons that is consistent with the unqualified reason for the target heating cable, increase the frequency of the unqualified reason for the target heating cable in the historical test records by one; when there are multiple unqualified reasons for the target heating cable, when there is a certain unqualified reason among the unqualified reasons that is consistent with a certain unqualified reason among the unqualified reasons for the target heating cable, increase the frequency of a certain unqualified reason among the unqualified reasons for the target heating cable in the historical test records by one. After traversing all the unqualified test records, the total frequency of each reason among the unqualified reasons for the target heating cable in the historical test records is obtained.

[0136] S323. When the total frequency exceeds a preset frequency threshold, a command to stop production is sent to a heating cable production machine corresponding to the cable model.

[0137] Specifically, when one or more total frequencies in the total frequency exceed the preset frequency threshold, the heating cable production machine that produces the heating cable of the cable model is determined, and a command to stop production is sent to the heating cable production machine. After receiving the command, the heating cable production machine stops running. At the same time, when one or more total frequencies in the total frequency are consistent with the number of records in the historical test records, information is sent to the designer of the heating cable of the cable model to remind the designer that there is a design problem with the heating cable of the cable model.

[0138] In the embodiment of the present application, when it is detected that the actual test temperature of the heating cable used alone has a large error with the preset test temperature, the actual test temperature of the heating cable is adjusted by the temperature control device, so that the actual test temperature of the heating cable and the preset test temperature are kept within a certain error range, so that the data collected based on the actual test temperature can truly reflect the performance of the heating cable used alone at the preset test temperature, reduce the influence of the inconsistency between the actual test temperature and the preset test temperature on the accuracy of the test results, and improve the accuracy of the test results of the power-on test of the heating cable used alone under extreme temperature conditions. When the power-on test result is qualified, by calculating the test hazard value of the heating cable continuing to perform the power-on test in each test area in the remaining test area set, and selecting the corresponding test area with the smallest test hazard value as the next test area of ​​the target heating cable, the possibility of safety accidents caused by problems such as cable aging or damage during the test process can be effectively reduced, and the safety of the test process can be improved. The key information in the test is intuitively displayed to the staff through different indicator lights, which saves the time of the staff to obtain work information and improves the efficiency of the entire power-on test process of the heating cable. By comparing the actual temperature measured by the thermometer with the real-time temperature collected by the temperature sensor, when it is detected that the temperature difference exceeds the preset error range, that is, the temperature sensor fails and the collected data is inaccurate, the data collected by the temperature sensor can be calibrated in time, thereby improving the accuracy of test data collection and thus improving the accuracy of the power-on test results. When the power-on test result of the heating cable is unqualified, by analyzing the abnormal data of the target heating cable during the test, the specific cause of the unqualified can be quickly and accurately determined, avoiding the blindness of traditional troubleshooting methods. When the frequency of occurrence of the unqualified cause exceeds the preset threshold, the production of the heating cable is stopped, which can avoid the waste of resources and increased costs caused by the continued production of unqualified products.

[0139] The above describes the heating cable test data acquisition control method in the embodiment of the present application. The following describes the test data acquisition control system in the embodiment of the present application in detail in combination with the above-mentioned heating cable test data acquisition control method.

[0140] See also Figure 4 , is a schematic diagram of an exemplary hardware structure of the test data acquisition and control system in an embodiment of the present application.

[0141] In some embodiments, the test data acquisition control system 400 includes a computer device, which can be a terminal device. The computer device includes a processor 401, a memory 402, a sensor module 403, a communication module 404, an input device 405 and an output device 406 connected by a system bus. Among them, the processor 401 of the computer device is used to provide computing and control capabilities. The memory 402 of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database is used to store data. The sensor module 403 of the computer device is used to collect test data and ambient temperature data during the power-on test of the heating cable. The communication module 404 of the computer device is used to transmit the collected test data, ambient temperature data and image data to the server and send control instructions to the temperature control device and the indicator light. The input device 405 of the computer device is used to receive the collected test data, ambient temperature data and image data. The output device 406 of the computer device is used to display test data, test results, etc. When the computer program is executed by the processor 401, the heating cable test data acquisition control method in the embodiment of the present application is implemented.

[0142] Those skilled in the art will understand that Figure 4 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0143] In some embodiments of the present application, a computer-readable storage medium is provided, including instructions. When the instructions are executed on the test data acquisition control system 400, the test data acquisition control system 400 can execute the heating cable test data acquisition control method in the embodiment of the present application.

[0144] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0145] As used in the above embodiments, the term "when..." may be interpreted to mean "if..." or "after..." or "in response to determining..." or "in response to detecting...", depending on the context. Similarly, the phrases "upon determining..." or "if (the stated condition or event) is detected" may be interpreted to mean "if determining..." or "in response to determining..." or "upon detecting (the stated condition or event)" or "in response to detecting (the stated condition or event)", depending on the context.

[0146] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website site, computer, server or data center to another website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state hard disk), etc.

[0147] Those skilled in the art can understand that to implement all or part of the processes in the above-mentioned embodiments, the processes can be completed by computer programs to instruct related hardware, and the programs can be stored in computer-readable storage media. When the programs are executed, they can include the processes of the above-mentioned method embodiments. The aforementioned storage media include: ROM or random access memory RAM, magnetic disk or optical disk and other media that can store program codes.

Claims

1. A heating cable test data acquisition control method, characterized in that: include: Collecting real-time test data, cable image data and real-time ambient temperature of each heating cable in the target test area during the power-on test, wherein the test data includes the surface temperature, voltage and current of the heating cable; Determine the predicted ambient temperature of each heating cable according to the real-time test data and the preset test ambient temperature, wherein the predicted ambient temperature is the ambient temperature collected by the temperature sensor corresponding to the heating cable when only one heating cable is energized for the test in the target test area and the test ambient temperature is the preset test ambient temperature; According to the predicted ambient temperature and the real-time ambient temperature, determine the real-time working power of the temperature regulating device corresponding to the sub-test area where each heating cable is located, the sub-test area is obtained by dividing the target test area into areas, each sub-test area corresponds to a temperature regulating device, the temperature regulating device includes a refrigeration device and a heating device, and the real-time working power is the working power that the temperature regulating device needs to adjust so that the real-time ambient temperature and the predicted ambient temperature are within a certain error range; Controlling the temperature regulating device to work according to the real-time working power so that the actual test environment temperature of each heating cable is within a certain error range with the preset test environment temperature; Determine the real-time working state of the target heating cable according to the target real-time test data and the target cable image data corresponding to the target heating cable, wherein the real-time working state includes normal and abnormal; When the real-time working state is abnormal, stopping the target power-on test of the target heating cable; After detecting that the target power-on test is completed, a power-on test result of the target heating cable is generated.

2. The method according to claim 1, characterized in that Determining the predicted ambient temperature of each heating cable according to the real-time test data and the preset test ambient temperature specifically includes: Substituting the real-time test data, the preset test environment temperature, the power-on test duration of each heating cable, and the distance between the heating cable and the corresponding temperature sensor into the environment temperature estimation formula to obtain the predicted environment temperature of each heating cable; Wherein, the ambient temperature estimation formula is: ;in, The heating cable is tested for a duration of The predicted ambient temperature at is the preset test environment temperature, is the duration of the power-on test, The heating cable is tested for a duration of The voltage at The heating cable is tested for a duration of The current at is the material density of the heating cable, is the specific heat capacity of the heating cable material, is the cross-sectional area of ​​the heating cable, The distance between the sensor for collecting ambient temperature and the heating cable, is the standard deviation of the temperature distribution, is the temperature correction constant.

3. The method according to claim 1, characterized in that The step of determining the real-time working power of the temperature regulating device corresponding to the sub-test area where each heating cable is located according to the predicted ambient temperature and the real-time ambient temperature specifically includes: According to the predicted ambient temperature, the real-time ambient temperature and the preset temperature adjustment time, the first real-time working power, the second real-time working power and the third real-time working power of the temperature adjustment device corresponding to the sub-test area where each heating cable is located are calculated respectively, the first real-time working power includes the first heating power of the heating device and the first cooling power of the cooling device when only the heating device is adjusted, the second real-time working power includes the second heating power of the heating device and the second cooling power of the cooling device when only the cooling device is adjusted, and the third real-time working power includes the third heating power of the heating device and the third cooling power of the cooling device when the heating device and the cooling device are adjusted simultaneously; According to the preset temperature adjustment time, the first real-time operating power, the second real-time operating power and the third real-time operating power, respectively calculate a first energy consumption corresponding to the first real-time operating power, a second energy consumption corresponding to the second real-time operating power and a third energy consumption corresponding to the third real-time operating power; According to the first energy consumption, the second energy consumption and the third energy consumption, a fourth real-time operating power corresponding to the minimum energy consumption is selected as the real-time operating power of the temperature adjustment device.

4. The method according to claim 1, characterized in that After the step of generating a power-on test result of the target heating cable after detecting that the target power-on test is completed, the method further includes: When the power-on test result is qualified, identifying the outer sheath damage area, outer sheath aging degree and insulation layer aging degree of the target heating cable according to the target cable image data of the target heating cable; Determine the test hazard value of each test area in the remaining test area set according to the outer sheath damage area, the outer sheath aging degree, the insulation layer aging degree and the remaining test area set of the target heating cable, wherein the remaining test area set is a set of test areas in all test areas in the preset test plan of the target heating cable that have not been subjected to power-on test; When there are one or more test danger values ​​in the test danger values ​​that do not exceed the preset danger threshold, the corresponding test area with the smallest test danger value is selected as the next test area of ​​the target heating cable.

5. The method according to claim 4, characterized in that When there is one or more test danger values ​​in the test danger values ​​that do not exceed the preset danger threshold, after the step of selecting the test area corresponding to the smallest test danger value as the next test area of ​​the target heating cable, the method further includes: Determine, according to the power-on test result, the abnormal condition of the sensor and the next test area, a first color of the test indicator light, a second color of the abnormal indicator light and a third color of the area indicator light corresponding to the target heating cable, wherein the test indicator light is used to display the power-on test result of the target heating cable, the abnormal indicator light is used to display the abnormal condition of the sensor corresponding to the target heating cable, and the area indicator light is used to display the next test area of ​​the target heating cable; According to the first color, the second color and the third color, corresponding control instructions are sent to the test indicator light, the abnormal indicator light and the area indicator light in sequence.

6. The method according to claim 1, characterized in that After the step of collecting real-time test data, cable image data and real-time ambient temperature of each heating cable in the target test area during the power-on test, the method further includes: Acquire a temperature image of a preset thermometer in a target test sub-area corresponding to the target heating cable in the target test area; According to the temperature image, identifying the actual temperature of the preset thermometer; Obtaining the real-time temperature collected by the temperature sensor corresponding to the preset thermometer; When the temperature difference between the actual temperature and the real-time temperature exceeds a preset error range, the surface temperature data in the target real-time test data corresponding to the target heating cable is calibrated according to the temperature difference to obtain calibration temperature data, and the working state of the temperature sensor corresponding to the target heating cable is set to an abnormal state; The surface temperature data in the target real-time test data is updated according to the calibration temperature data.

7. The method according to claim 1, characterized in that After the step of generating a power-on test result of the target heating cable after detecting that the target power-on test is completed, the method further includes: When the power-on test result is unqualified, determining the unqualified cause of the target heating cable according to abnormal data of the target heating cable during the power-on test; Obtain historical test records of other heating cables having the same cable model as the target heating cable in the total historical test records; According to the historical test records and the reasons for failure, determining the total frequency of the reasons for failure appearing in the historical test records; When the total frequency exceeds a preset frequency threshold, a command to stop production is sent to a heating cable production machine corresponding to the cable model.

8. A test data acquisition control system, characterized in that: The system comprises a temperature regulating device, a sensor and a server, wherein the server comprises: one or more processors and a memory; The memory is coupled to the one or more processors, and the memory is used to store computer program codes, wherein the computer program codes include computer instructions, and the one or more processors call the computer instructions to enable the test data acquisition control system to execute the method according to any one of claims 1 to 7.

9. A computer-readable storage medium storing computer instructions, characterized in that: When the computer instructions are executed on a test data acquisition control system, the test data acquisition control system is caused to execute the method according to any one of claims 1 to 7.

10. A computer program product, characterized in that When the computer program product runs on a test data acquisition control system, the test data acquisition control system is enabled to execute the method according to any one of claims 1 to 7.

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