Metering terminal temperature detection device and temperature detection method

Abstract

The embodiment of the invention discloses a temperature detection device and method for a metering terminal, and a temperature detection module is used for collecting the temperature of a wiring terminal of the metering terminal to generate a first temperature signal, and collecting the temperature of the environment to generate a second temperature signal. The controller determines the surface temperature of the wiring terminal according to the first temperature signal and the second temperature signal, generates alarm information and sends the alarm information to a dispatching center when determining that the wiring terminal is abnormal according to the surface temperature, the temperature of the wiring terminal does not need to be detected through manual inspection, and the temperature of the wiring terminal can be detected in real time; on one hand, the temperature of the wiring terminal can be detected in real time for a long time for trend analysis, on the other hand, the temperature of the wiring terminal can be determined according to the environment temperature, the influence of the environment temperature on the temperature of the wiring terminal is eliminated, the accuracy of the detected surface temperature of the wiring terminal is high, and an alarm can be given when it is determined that the wiring terminal is abnormal through the surface temperature. And automatic early warning can be realized in time, and preventability is realized.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of terminal equipment detection, and in particular to a temperature detection device and a temperature detection method for a metering terminal. Background Art

[0002] During the operation of the electricity metering terminal, the temperature of the terminal blocks rises abnormally due to poor contact, loose wiring or long-term high-load operation. Traditional temperature detection methods mainly rely on manual inspections or the use of portable infrared thermometers to check one by one.

[0003] The manual inspection method of carrying infrared temperature measurement has the following problems:

[0004] 1) The detection cycle is long, making it difficult to achieve real-time monitoring, which can easily lead to delayed discovery of high temperature hazards;

[0005] 2) Manual inspection is limited by the technical level, operation accuracy and inspection environment conditions of the inspectors, resulting in inaccurate measurement results or even missed inspections;

[0006] 3) Traditional methods cannot provide long-term temperature trend data of the terminal blocks, nor can they automatically warn of abnormal conditions. Faults are easily discovered only after they occur, and are not preventive. Summary of the invention

[0007] The embodiments of the present invention provide a temperature detection device and a temperature detection method for a metering terminal, so as to solve the problems that the temperature of a wiring terminal is difficult to monitor, has low accuracy and cannot be automatically warned during manual inspection.

[0008] In a first aspect, an embodiment of the present invention provides a temperature detection device for a metering terminal, comprising a housing and a temperature detection module, a controller, a communication module, and a power supply arranged in the housing, wherein the temperature detection module and the communication module are both connected to the controller, and the power supply supplies power to the temperature detection module, the controller, and the communication module;

[0009] The temperature detection module includes an infrared temperature measuring probe, which is used to collect the temperature of the connection terminal of the metering terminal to generate a first temperature signal and to collect the temperature of the environment to generate a second temperature signal;

[0010] The controller is used to determine the surface temperature of the wiring terminal according to the first temperature signal and the second temperature signal, and determine whether the wiring terminal is abnormal according to the surface temperature, and if so, generate an alarm message and send it to the communication module;

[0011] The communication module is used to send the alarm information to the dispatching center.

[0012] Optionally, the controller includes:

[0013] A signal processing unit, configured to perform filtering and noise reduction processing on the first temperature signal and the second temperature signal output by the temperature detection module to obtain the first temperature signal and the second temperature signal after noise reduction filtering;

[0014] An analog-to-digital conversion unit, used for converting the first temperature signal and the second temperature signal after noise reduction filtering into the first temperature and the second temperature;

[0015] A temperature correction unit is used to correct the first temperature using the second temperature to obtain the surface temperature of the terminal.

[0016] Optionally, the temperature correction unit is specifically used for:

[0017] Determine a temperature compensation value of the second temperature in a preset ambient temperature-compensation temperature table;

[0018] The sum of the temperature compensation value and the first temperature is calculated to obtain the surface temperature of the terminal.

[0019] Optionally, the controller includes:

[0020] A temperature comparison unit, used for determining whether the surface temperature is greater than a preset first temperature threshold, and if so, executing a first abnormal alarm information generation unit;

[0021] The first abnormal alarm information generating unit is used to generate first alarm information of abnormal temperature of the connection terminal.

[0022] Optionally, the controller includes:

[0023] A temperature curve generating unit, used for generating a temperature curve using the surface temperature of the wiring terminal at multiple time points;

[0024] An abnormality prediction unit, used for inputting the temperature curve into a pre-trained abnormality detection model to obtain the probability of the abnormality of the connection terminal;

[0025] The second abnormal alarm information generating unit is used to determine that the connection terminal is abnormal when the probability is greater than a preset probability threshold and generate second alarm information.

[0026] Optionally, the controller further includes:

[0027] A data encryption unit, used for encrypting the surface temperature to obtain an encrypted surface temperature;

[0028] A data uploading unit, used for sending the encrypted surface temperature to the communication module;

[0029] The communication module is used to send the encrypted surface temperature to the dispatch center.

[0030] Optionally, the controller further includes:

[0031] A sleep control unit, configured to send a sleep instruction to the communication module when the surface temperature is less than a preset second temperature threshold within a preset time period;

[0032] The communication module is used to switch to the sleep mode when receiving the sleep instruction.

[0033] Optionally, a storage module is further included, and the storage module is used to store the surface temperature of the terminal block in a memory;

[0034] The controller is also used to clear the data in the memory when the available capacity of the memory is less than a preset capacity threshold.

[0035] Optionally, a positioning module is also included;

[0036] The positioning module is used to obtain the location data of the metering terminal;

[0037] The controller is further configured to add the position data to the alarm information.

[0038] In a second aspect, an embodiment of the present invention provides a metering terminal temperature detection method, which is applied to the metering terminal temperature detection device according to any one of the first aspects, including:

[0039] The infrared temperature probe is used to collect the temperature of the connection terminal of the metering terminal to generate a first temperature signal, and the infrared temperature probe is used to collect the temperature of the environment to generate a second temperature signal;

[0040] determining a surface temperature of the connection terminal according to the first temperature signal and the second temperature signal;

[0041] determining whether the connection terminal is abnormal according to the surface temperature;

[0042] If so, an alarm message is generated;

[0043] The alarm information is sent to the dispatch center through the communication module.

[0044] The metering terminal temperature detection device of the present embodiment includes a shell and a temperature detection module, a controller, a communication module and a power supply arranged in the shell. The temperature detection module and the communication module are both connected to the controller. The power supply supplies power to the temperature detection module, the controller and the communication module. The infrared temperature measuring probe of the temperature detection module is used to collect the temperature of the wiring terminal of the metering terminal to generate a first temperature signal and to collect the temperature of the environment to generate a second temperature signal. The controller determines the surface temperature of the wiring terminal according to the first temperature signal and the second temperature signal, and determines whether the wiring terminal is abnormal according to the surface temperature. If so, an alarm message is generated and sent to the communication module. The communication module sends the alarm message to the dispatching center, so that the surface temperature of the wiring terminal is detected by the metering terminal temperature detection device. On the one hand, there is no need for manual inspection to detect the temperature of the wiring terminal, and the temperature of the wiring terminal can be detected in real time, so that the temperature of the wiring terminal can be detected in real time for a long time to perform trend analysis. On the other hand, the temperature of the wiring terminal can be determined according to the ambient temperature, eliminating the influence of the ambient temperature on the temperature of the wiring terminal. The detected surface temperature of the wiring terminal has high accuracy, and an alarm can be issued when the wiring terminal is abnormal according to the surface temperature, so that an automatic early warning can be issued in time, which is preventive. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 A schematic diagram of the structure of a temperature detection device for a metering terminal provided by an embodiment of the present invention;

[0046] Figure 2 A schematic structural diagram of a temperature detection device for a metering terminal provided in another embodiment of the present invention;

[0047] Figure 3 A schematic structural diagram of a temperature detection device for a metering terminal provided in yet another embodiment of the present invention;

[0048] Figure 4 A schematic structural diagram of a temperature detection device for a metering terminal provided in yet another embodiment of the present invention;

[0049] Figure 5 This is a schematic diagram of the structure of a temperature detection device for a metering terminal with a positioning module and a storage module added in an embodiment of the present invention;

[0050] Figure 6 It is a structural schematic diagram of a temperature detection device for a metering terminal with sleep control in an embodiment of the present invention;

[0051] Figure 7 The present invention provides a flow chart of a temperature detection method for a metering terminal. DETAILED DESCRIPTION

[0052] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0053] Figure 1 A schematic diagram of a temperature detection structure of a metering terminal provided by an embodiment of the present invention is shown in FIG. Figure 1 As shown, the metering terminal temperature detection device of an embodiment of the present invention is used to detect the surface temperature of the wiring terminals in the metering terminal. Exemplarily, the metering terminal temperature detection device can be installed on the metering terminal between the substation and the load center, or installed on the metering terminal at other locations in the distribution network, for real-time monitoring of the wiring terminals and ambient temperature.

[0054] like Figure 1 As shown, the temperature detection device of the metering terminal may include a shell 1 and a temperature detection module 2, a controller 3, a communication module 4 and a power module 5 arranged in the shell 1. The temperature detection module 2 and the communication module 4 are both connected to the controller 3, and the power module 5 supplies power to the temperature detection module 2, the controller 3 and the communication module 4.

[0055] Among them, the temperature detection module 2 can be a non-contact infrared temperature detection module, the controller 3 can be a chip with data processing capabilities, such as an MCU, etc., the communication module 4 can be a wired or wireless communication module, such as 4G, NBIoT, 5G, WiFi, LoRa and other communication modules, and of course it can also be a wired network interface unit for physical connection with a billing network or a local terminal, the power supply module 5 can include a main power supply and a backup power supply, the main power supply can be connected to the power supply used by the metering terminal, and the backup power supply can be a battery, which can switch to the battery power supply when the main power supply is on.

[0056] The shell 1 can be the outer protective shell of the metering terminal temperature detection device. The shell 1 can be made of high temperature resistant and corrosion-resistant engineering plastics or alloy materials, and can adopt an IP65-level sealing design to prevent moisture, dust and oil from corroding the device. Its appearance is compact and easy to install or replace quickly. This embodiment does not limit the mechanical structure of the shell 1. It should be noted that the infrared temperature measuring probe of the temperature detection module 2 is exposed outside the shell 1.

[0057] In this embodiment, the temperature detection module 2 includes an infrared temperature measuring probe, which is used to collect the temperature of the wiring terminal of the metering terminal to generate a first temperature signal and to collect the temperature of the environment to generate a second temperature signal. The controller 3 is used to determine the surface temperature of the wiring terminal according to the first temperature signal and the second temperature signal, and determine whether the wiring terminal is abnormal according to the surface temperature. If so, an alarm message is generated and sent to the communication module 4, and the communication module 4 is used to send the alarm message to the dispatch center. On the one hand, there is no need for manual inspection to detect the temperature of the wiring terminal, and the temperature of the wiring terminal can be detected in real time, and long-term real-time detection of the temperature of the wiring terminal can be achieved for trend analysis. On the other hand, the temperature of the wiring terminal can be determined according to the ambient temperature, eliminating the influence of the ambient temperature on the temperature of the wiring terminal. The surface temperature of the detected wiring terminal has high accuracy, and it can determine that the wiring terminal is abnormal through the surface temperature. When the surface temperature is determined, an alarm is issued, and an automatic warning can be issued in time, which is preventive.

[0058] like Figure 2 As shown, in an optional embodiment of the present invention, the controller 3 includes a signal processing unit 31, an analog-to-digital conversion unit 32 and a temperature correction unit 33, wherein the signal processing unit 31, the analog-to-digital conversion unit 32 and the temperature correction unit 33 are connected in sequence, and the temperature correction unit 33 is also connected to the communication module 4. The signal processing unit 31 is connected to the temperature detection module 2, and is used to receive a temperature signal from the temperature detection module 2, such as filtering and denoising the first temperature signal and the second temperature signal output by the temperature detection module 2 to obtain the first temperature signal and the second temperature signal after denoising filtering, wherein the temperature detection module 2 outputs an analog signal, and the first temperature signal and the second temperature signal can be subjected to filtering and denoising such as low-pass filtering, band-stop filtering, resampling, and amplification to obtain the first temperature signal and the second temperature signal after denoising filtering, so as to improve the signal quality of the first temperature signal and the second temperature signal after denoising filtering, which is conducive to improving the accuracy of the surface temperature of the terminal.

[0059] The analog-to-digital conversion unit 32 is used to convert the first temperature signal and the second temperature signal after the noise reduction filter into the first temperature and the second temperature, that is, to convert the first temperature signal and the second temperature signal after the noise reduction filter in analog format into digital signals and then analyze them into numerical first temperature and second temperature, wherein the first temperature is the initial temperature of the terminal block detected by the temperature detection module 2, and the second temperature is the temperature of the environment where the terminal block is located.

[0060] The temperature correction unit 33 is used to correct the first temperature using the second temperature to obtain the surface temperature of the terminal. In one embodiment, the temperature correction unit is specifically used to determine the temperature compensation value of the second temperature in a preset ambient temperature-compensation temperature table, and calculate the sum of the temperature compensation value and the first temperature to obtain the surface temperature of the terminal. Specifically, this embodiment can pre-configure the ambient temperature-compensation temperature table according to factors such as the environment in which the temperature detection device of the metering terminal is located and the internal structure of the metering terminal. The ambient temperature-compensation temperature table includes compensation temperatures corresponding to different ambient temperature (including humidity) intervals. The interval in which the second temperature of the environment is located can be determined in the ambient temperature-compensation temperature table by the second temperature, thereby obtaining the corresponding compensation temperature. The sum of the compensation temperature and the first temperature of the terminal is calculated to obtain the surface temperature of the terminal, thereby determining the influence of the ambient temperature when the temperature detection module 2 detects the temperature of the terminal, and obtaining the accurate surface temperature of the terminal.

[0061] Of course, an ambient temperature-compensation coefficient table may also be configured, and a corresponding compensation system may be obtained by determining the interval in which the second ambient temperature is located, and the product of the compensation coefficient and the first temperature may be calculated to obtain the accurate surface temperature of the terminal block.

[0062] After the temperature correction module 33 obtains the accurate surface temperature of the terminal block through temperature correction, the surface temperature can be uploaded to the dispatch center through the communication module 4 to display the surface temperature of each terminal block of the metering terminal at the dispatch center, so that the back-end operation and maintenance personnel can understand the temperature of each terminal block in real time.

[0063] like Figure 3 As shown, in one embodiment, the controller 3 also includes a temperature comparison unit 34 and a first abnormal alarm information generation unit 35. The temperature comparison unit 34 is connected to the temperature correction unit 33, and the first abnormal alarm information generation unit is connected to the communication module 4. The temperature comparison unit 34 is used to determine whether the surface temperature is greater than a preset first temperature threshold. If the first abnormal alarm information generation unit 35 is executed, the first abnormal alarm information generation unit 35 is used to generate a first alarm information of abnormal terminal temperature and send it to the communication module 4, so as to send the first alarm information to the dispatching center through the communication module 4 to alarm, so as to remind the dispatching center that the surface temperature of the terminal of the metering terminal is too high. The operation and maintenance personnel of the dispatching center can first determine whether the load of the line where the metering terminal is located is too high. If so, load allocation is performed to reduce the load of the line where the metering terminal is located to cool the terminal. If the load is low, it is determined that the terminal is abnormally wired, such as poor contact, foreign matter, etc., and the maintenance personnel are notified to go to the metering terminal site to eliminate the abnormality.

[0064] like Figure 4As shown, in one embodiment, the controller may further include a temperature curve generating unit 36, an abnormality prediction unit 37 and a second abnormality alarm information generating unit 38 which are connected in sequence, wherein the temperature curve generating unit 36 ​​is connected to the temperature correction unit 33, and is used to generate a temperature curve using the surface temperature of the terminal at multiple time points, the abnormality prediction unit 37 is used to input the temperature curve into a pre-trained abnormality detection model to obtain the probability of the terminal being abnormal, and the second abnormality alarm information generating unit 38 is also connected to the communication module 4, and is used to determine that the terminal is abnormal when the probability is greater than a preset probability threshold, and generate a second alarm message.

[0065] Specifically, the anomaly detection model can be pre-trained, and the anomaly detection model can be DNN (Deep Neural Network), RNN (Recurrent Neural Network), CNN (Convolutional Neural Network), etc. During training, the temperature curve of the terminal block when it is normal and the temperature curve when it is abnormal can be used as training samples, and the training samples are randomly extracted and input into the anomaly detection model to predict the temperature curve as normal or abnormal. The parameters of the anomaly detection model are adjusted after the loss rate is calculated by comparing the predicted result with the actual result. For example, after calculating the mean square error loss and the cross entropy loss, the parameters of the anomaly detection model are subjected to random gradient camera, batch gradient descent, etc. through the calculated loss until the loss rate is less than a preset value or the number of iterative training reaches a preset number, and then the anomaly detection model is deployed in the controller 3.

[0066] In the controller 3, the surface temperature of the terminal block at multiple time points can be used to generate a temperature curve. For example, the surface temperature of the terminal block is collected every 30 seconds, and the temperature curve can be generated in real time. The temperature curve 5 minutes before the current time is intercepted from the generated temperature curve and input into the abnormality detection model. In the abnormality detection model, features are extracted from the temperature curve, such as the maximum temperature, temperature trend (increasing or decreasing), temperature curve change rate (increasing or decreasing slope), etc. The probability that the surface temperature of the terminal block will be abnormal is predicted by the extracted features. If the probability is greater than a preset probability threshold, it can be determined that the terminal block is about to be abnormal. For example, when the surface temperature of the terminal block continues to rise, the greater the probability, the more likely it is that the second abnormal alarm information generation unit 38 can generate a second alarm message and send it to the communication module 4. The second alarm message is sent to the dispatching center through the communication module 4 to prompt the operation and maintenance personnel of the dispatching center that the surface temperature of the terminal block of the metering terminal continues to rise and there is an abnormality.

[0067] like Figure 5As shown, in another embodiment, a positioning module 6 and a storage module 7 may be further included, and both the positioning module 6 and the storage module 7 are connected to the controller 3. The positioning module 6 may be a positioning module such as GPS and Beidou, and is used to obtain the position data of the temperature detection device of the metering terminal, and send the position data to the controller 3. When the controller 3 sends the surface temperature and alarm information of the terminal block to the dispatching center through the communication module 4, the position data may be added to the surface temperature and alarm information, such as adding it to the header of the data packet or the preset position of the message, so that the operation and maintenance personnel can quickly determine the location of the metering terminal and quickly arrive at the metering terminal to eliminate the abnormality on site.

[0068] The storage module 7 is used to store the surface temperature of the terminal block in the memory. The controller 3 is also used to clear the data in the memory when the available capacity of the memory is less than the preset capacity threshold. In this embodiment, the collected surface temperature of the terminal block can be stored in the memory to form a historical record through the storage module 7. The operation and maintenance personnel can view the historical temperature data from the remote dispatch center, or download the historical temperature data from the interface of the temperature detection device of the metering terminal to the mobile terminal on site and then check the historical temperature data for abnormality troubleshooting.

[0069] like Figure 6 As shown, in an optional embodiment, the controller 3 further includes a data encryption unit 39 and a data upload unit 310, the data encryption unit 39 is connected to the temperature correction unit 33 and the data upload unit 310 respectively, the data upload unit 310 is connected to the communication module 4, the data encryption unit 39 is used to encrypt the surface temperature to obtain the encrypted surface temperature, the data upload unit 310 is used to send the encrypted surface temperature to the communication module 4, and the communication module 4 is used to send the encrypted surface temperature to the dispatch center. Among them, the encryption algorithm used can be the national encryption SM1, SM2, SM3, SM4 and other algorithms. This embodiment does not limit the encryption algorithm used. By encrypting the data and uploading it, the security performance of the communication data is improved.

[0070] like Figure 6 As shown, in an optional embodiment, the controller 3 also includes a sleep control unit 311, which is connected to the communication module and is used to send a sleep instruction to the communication module 4 when the surface temperature is less than the preset second temperature threshold within the preset time period, and the communication module 4 is used to switch to the sleep mode when receiving the sleep instruction. Exemplarily, when the surface temperature collected for one hour is lower than the second temperature threshold, it means that the wiring terminal of the metering terminal is in good condition, and the line load where the metering terminal is located is low. The temperature of the terminal will not be too high in a short time, and there is no need to upload temperature data. The communication module 4 can be controlled to enter the sleep mode to reduce the power consumption of the temperature detection device of the metering terminal and save power consumption.

[0071] Figure 7 The present invention provides a flow chart of a temperature detection method for a metering terminal. The temperature detection method for a metering terminal according to the present invention is applicable to detecting the temperature of a connection terminal of a metering terminal. The method can be executed by a temperature detection device for a metering terminal, such as Figure 7 As shown, the temperature detection method of the metering terminal in the embodiment of the present invention may specifically include the following steps:

[0072] S701: Using an infrared temperature measuring probe to collect the temperature of a connection terminal of a metering terminal to generate a first temperature signal, and to collect the temperature of an environment to generate a second temperature signal.

[0073] like Figure 1 As shown, the temperature detection device of the metering terminal of this embodiment includes a temperature detection module, which may include an infrared temperature measuring probe. After the temperature detection device of the metering terminal is installed on the metering terminal, the infrared temperature measuring probe can collect the temperature of the wiring terminal of the metering terminal to generate a first temperature signal and collect the ambient temperature to generate a second temperature signal, wherein the first temperature signal and the second temperature signal can be analog signals, and the infrared temperature measuring probe transmits the first temperature signal and the second temperature signal to the controller.

[0074] S702: Determine the surface temperature of the connection terminal according to the first temperature signal and the second temperature signal.

[0075] In one embodiment, after the controller receives the first temperature signal and the second temperature signal in analog signal format, it can filter and denoise the received first temperature signal and the second temperature signal to obtain the first temperature signal and the second temperature signal after denoising filtering, and convert the first temperature signal and the second temperature signal after denoising filtering into digital signals to obtain the first temperature and the second temperature, and further correct the first temperature by the second temperature to obtain the surface temperature of the terminal.

[0076] In one embodiment, the temperature compensation value of the second temperature may be determined in a preset ambient temperature-compensation temperature table, and the sum of the temperature compensation value and the first temperature may be calculated to obtain the surface temperature of the terminal.

[0077] S703. Determine whether the connection terminal is abnormal based on the surface temperature.

[0078] In one embodiment, it is determined whether the surface temperature is greater than a preset first temperature threshold. If so, it is determined that the connection terminal is abnormal, and S704 is executed to generate a first alarm message of abnormal connection terminal temperature.

[0079] In another embodiment, a temperature curve can be generated using the surface temperature of the terminal at multiple time points, and the temperature curve can be input into a pre-trained anomaly detection model to obtain the probability of the terminal being abnormal. When the probability is greater than a preset probability threshold, the terminal is determined to be abnormal, and S704 is executed to generate a second alarm message.

[0080] S704: Generate alarm information.

[0081] In one embodiment, the location data of the metering terminal may also be acquired through the positioning module, and the location data may be added to the alarm information.

[0082] S705. Send the alarm information to the dispatch center through the communication module.

[0083] The communication module can be a wired or wireless communication module, through which the alarm information is sent to the network, and the alarm information is transmitted to the dispatch center through the network connection to remind the dispatch center that the temperature of the wiring terminal of the metering terminal is abnormal.

[0084] In an optional embodiment, the surface temperature can also be encrypted to obtain an encrypted surface temperature, and the encrypted surface temperature can be sent to a communication module, which can then send the encrypted surface temperature to a dispatching center through the communication module. By encrypting the surface temperature data, the security performance of network transmission data is improved.

[0085] In another embodiment, if the surface temperature is less than a preset second temperature threshold within a preset time period, a sleep command can be sent to the communication module. Upon receiving the sleep command, the communication module switches to sleep mode to stop uploading temperature data to the dispatching center when the terminal block of the metering terminal is in a relatively good state, thereby reducing the power consumption of the temperature detection device of the metering terminal.

[0086] In yet another embodiment, the surface temperature of the connection terminal may be stored in a memory, and when the available capacity of the memory is less than a preset capacity threshold, the data in the memory is cleared.

[0087] It should be noted that, for the method embodiment, since it is basically similar to the embodiment of the metering terminal temperature detection device, the description is relatively simple, and the relevant parts can be referred to the partial description of the embodiment of the metering terminal temperature detection device.

[0088] The metering terminal temperature detection method provided in the embodiment of the present invention is applied to the metering terminal temperature detection device provided in the embodiment of the present invention, so that the metering terminal temperature detection method has corresponding beneficial effects.

[0089] Through the above description of the implementation method, the technicians in the relevant field can clearly understand that the present invention can be implemented by software and necessary general hardware, and of course it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as a computer's floppy disk, read-only memory (ROM), random access memory (RAM), flash memory (FLASH), hard disk or optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the test report generation method described in each embodiment of the present invention.

[0090] It is worth noting that in the embodiment of the above-mentioned metering terminal temperature detection device, the various units and modules included are only divided according to functional logic, but are not limited to the above-mentioned division, as long as the corresponding functions can be achieved; in addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of the present invention.

[0091] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A temperature detection device for a metering terminal, characterized in that: It comprises a housing and a temperature detection module, a controller, a communication module and a power supply arranged in the housing, wherein the temperature detection module and the communication module are both connected to the controller, and the power supply supplies power to the temperature detection module, the controller and the communication module; The temperature detection module includes an infrared temperature measuring probe, which is used to collect the temperature of the connection terminal of the metering terminal to generate a first temperature signal and to collect the temperature of the environment to generate a second temperature signal; The controller is used to determine the surface temperature of the wiring terminal according to the first temperature signal and the second temperature signal, and determine whether the wiring terminal is abnormal according to the surface temperature, and if so, generate an alarm message and send it to the communication module; The communication module is used to send the alarm information to the dispatching center.

2. The metering terminal temperature detection device according to claim 1, characterized in that: The controller comprises: A signal processing unit, configured to perform filtering and noise reduction processing on the first temperature signal and the second temperature signal output by the temperature detection module to obtain the first temperature signal and the second temperature signal after noise reduction filtering; An analog-to-digital conversion unit, used for converting the first temperature signal and the second temperature signal after noise reduction filtering into a first temperature and a second temperature; A temperature correction unit is used to correct the first temperature using the second temperature to obtain the surface temperature of the terminal.

3. The metering terminal temperature detection device according to claim 2, characterized in that: The temperature correction unit is specifically used for: Determine a temperature compensation value of the second temperature in a preset ambient temperature-compensation temperature table; The sum of the temperature compensation value and the first temperature is calculated to obtain the surface temperature of the terminal.

4. The metering terminal temperature detection device according to any one of claims 1 to 3, characterized in that: The controller comprises: A temperature comparison unit, used for judging whether the surface temperature is greater than a preset first temperature threshold, and if so, executing a first abnormal alarm information generation unit; The first abnormal alarm information generating unit is used to generate first alarm information of abnormal temperature of the connection terminal.

5. The metering terminal temperature detection device according to any one of claims 1 to 3, characterized in that: The controller comprises: A temperature curve generating unit, used for generating a temperature curve using the surface temperature of the wiring terminal at multiple time points; An abnormality prediction unit, used for inputting the temperature curve into a pre-trained abnormality detection model to obtain the probability of the abnormality of the connection terminal; The second abnormal alarm information generating unit is used to determine that the connection terminal is abnormal when the probability is greater than a preset probability threshold and generate second alarm information.

6. The metering terminal temperature detection device according to any one of claims 1 to 3, characterized in that: The controller further comprises: A data encryption unit, used for encrypting the surface temperature to obtain an encrypted surface temperature; A data uploading unit, used for sending the encrypted surface temperature to the communication module; The communication module is used to send the encrypted surface temperature to the dispatch center.

7. The metering terminal temperature detection device according to claim 6, characterized in that: The controller further comprises: A sleep control unit, configured to send a sleep instruction to the communication module when the surface temperature is less than a preset second temperature threshold within a preset time period; The communication module is used to switch to the sleep mode when receiving the sleep instruction.

8. The metering terminal temperature detection device according to any one of claims 1 to 3, characterized in that: Also included is a storage module, the storage module is used to store the surface temperature of the terminal in a memory; The controller is also used to clear the data in the memory when the available capacity of the memory is less than a preset capacity threshold.

9. The metering terminal temperature detection device according to any one of claims 1 to 3, characterized in that: Also includes a positioning module; The positioning module is used to obtain the location data of the metering terminal; The controller is further configured to add the position data to the alarm information.

10. A temperature detection method for a metering terminal, characterized in that: The temperature detection device for a metering terminal according to any one of claims 1 to 9 comprises: The infrared temperature probe is used to collect the temperature of the connection terminal of the metering terminal to generate a first temperature signal, and the infrared temperature probe is used to collect the temperature of the environment to generate a second temperature signal; determining a surface temperature of the connection terminal according to the first temperature signal and the second temperature signal; determining whether the connection terminal is abnormal according to the surface temperature; If so, an alarm message is generated; The alarm information is sent to the dispatch center through the communication module.

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