Temperature warning circuit, method, device and computer storage medium

Abstract

The application discloses a temperature early warning circuit, method, device and computer storage medium, which are used for temperature early warning of a circuit breaker of a power device. The temperature early warning circuit comprises a plurality of temperature sensors, which are arranged at a plurality of temperature detection positions of the circuit breaker respectively, are used for detecting temperatures of the temperature detection positions, and generate corresponding temperature signals; a temperature signal gating module, a plurality of channel input ends of the temperature signal gating module are connected with the plurality of temperature sensors respectively; a main control module, a first end of the main control module is connected with an output end of the temperature signal gating module, a second end of the main control module is in communication connection with a cloud platform or a local monitoring device, the main control module is used for sending a polling gating signal to the temperature signal gating module to poll and acquire the temperature signals input by each channel input end, and when at least one temperature signal meets a preset temperature early warning condition, temperature early warning information is sent. According to the embodiment of the application, the plurality of temperature signals can be acquired to perform temperature abnormality early warning, so that the health management of the device is realized.

Description

Technical Field

[0001] This application belongs to the field of power equipment management, and in particular relates to a temperature early warning circuit, method, device and computer storage medium. Background Technology

[0002] Currently, the maintenance of electrical equipment mainly adopts periodic management, which involves periodically inspecting and replacing components or entire pieces of equipment that have reached the end of their service life or have malfunctioned. Typically, during the periodic maintenance of equipment operation, an equipment ledger is established, which compiles information such as on-site equipment performance, usage cycle, and replacement time into a database.

[0003] However, the aforementioned periodic management methods for equipment often require equipment to be shut down for inspection during maintenance, impacting production efficiency. Furthermore, these methods cannot provide timely warnings for sudden equipment failures, and the manual operation is cumbersome with a low confidence level.

[0004] Based on this, this application proposes a temperature early warning scheme for equipment management. Summary of the Invention

[0005] This application provides a temperature warning circuit, method, device, and computer storage medium, which can acquire multiple temperature signals to provide temperature anomaly warnings, thereby realizing health management of the equipment.

[0006] In a first aspect, embodiments of this application provide a temperature warning circuit for providing temperature warnings for circuit breakers in power equipment, including:

[0007] Multiple temperature sensors are respectively set at multiple temperature detection positions of the circuit breaker. The temperature sensors are used to detect the temperature at the temperature detection position and generate corresponding temperature signals.

[0008] Temperature signal gating module, the multiple channel input terminals of the temperature signal gating module are respectively connected to multiple temperature sensors;

[0009] The main control module has its first end connected to the output end of the temperature signal gating module, and its second end connected to the cloud platform or local monitoring equipment. The main control module is used to send a polling gating signal to the temperature signal gating module to poll and obtain the temperature signal input to each channel input end, and to send a temperature warning message to the cloud platform or local monitoring equipment when at least one temperature signal meets the preset temperature warning condition.

[0010] In some possible implementations, the gating signal terminal of the main control module is connected to the gating control terminal of the temperature signal gating module;

[0011] The main control module is also used to periodically send polling gating signals to the temperature signal gating module, so that the temperature signal gating module sends the temperature signal input from each channel input terminal to the main control module in sequence according to the polling gating signals.

[0012] In some possible implementations, the temperature warning circuit further includes:

[0013] The signal conversion module has its input terminal connected to the output terminal of the temperature signal gating module, and its output terminal connected to the first terminal of the main control module. The signal conversion module is used to convert the temperature signal sent by the temperature signal gating module from an analog signal to a digital signal.

[0014] In some possible implementations, the signal conversion module includes a cold junction compensation circuit and a temperature conversion circuit;

[0015] The cold junction compensation circuit is used to perform cold junction compensation on the ambient temperature to generate a cold junction compensation result;

[0016] The temperature conversion circuit is connected to the output of the temperature signal gating module and is used to perform cold junction compensation and analog-to-digital conversion on the received temperature signal based on the cold junction compensation result.

[0017] In some possible implementations, the signal conversion module further includes:

[0018] An internal fault detection circuit, connected to the output of the temperature signal gating module, is used to determine the short-circuit and / or open-circuit state of the temperature sensor based on the received temperature signal, and to send a fault signal to the main control module when the temperature sensor experiences a short circuit or open circuit.

[0019] Secondly, embodiments of this application provide a temperature warning method, which is applied to a temperature warning circuit as provided in any of the above embodiments of this application. The method includes:

[0020] Send a polling gating signal to the temperature signal gating module;

[0021] The circuit breaker receives multiple temperature signals sent by the temperature signal gating module. These multiple temperature signals correspond to the temperatures at multiple temperature detection locations on the circuit breaker.

[0022] When at least one of the multiple temperature signals meets the preset temperature warning condition, a temperature warning message is output.

[0023] In some possible implementations, before outputting a temperature warning message when at least one of the multiple temperature signals meets a preset temperature warning condition, the method further includes:

[0024] When the first temperature signal is detected to meet the null anomaly judgment condition, the data of the first temperature signal is set to a preset null value. The first temperature signal is any one of multiple temperature signals.

[0025] In some possible implementations, when at least one of the multiple temperature signals meets a preset temperature warning condition, a temperature warning message is output, including:

[0026] When the second temperature signal is detected to be greater than the preset temperature threshold, a temperature warning message is output. The second temperature signal is any one of multiple temperature signals, and the temperature warning message includes the identification information of the temperature detection location corresponding to the second temperature signal.

[0027] Thirdly, embodiments of this application provide a temperature warning device, which includes:

[0028] Processor and memory storing computer program instructions;

[0029] When the processor executes the computer program instructions, it implements the temperature warning method provided in any of the embodiments of this application described above.

[0030] Fourthly, embodiments of this application provide a computer storage medium storing computer program instructions, which, when executed by a processor, implement the temperature warning method provided in any of the embodiments of this application described above.

[0031] Fifthly, embodiments of this application provide a computer program product in which instructions, when executed by a processor of an electronic device, cause the electronic device to perform a temperature warning method as provided in any of the embodiments of this application described above.

[0032] The temperature warning circuit, method, device, and computer storage medium of this application embodiment are implemented by setting multiple temperature sensors at multiple temperature detection locations on a circuit breaker to detect the temperature at the temperature detection locations and generate corresponding temperature signals. Multiple channel input terminals of the temperature signal gating module are connected to multiple temperature sensors to receive the corresponding temperature signals. The first terminal of the main control module is connected to the output terminal of the temperature signal gating module to send a polling gating signal to the temperature signal gating module to poll and obtain the temperature signal input at each channel input terminal. When at least one temperature signal meets the preset temperature warning condition, the temperature warning information is sent to the cloud platform or local monitoring equipment so that relevant personnel can take timely countermeasures after receiving the temperature warning information, thereby realizing the health management of the equipment. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of a temperature warning circuit provided in an embodiment of this application;

[0035] Figure 2 This is a schematic diagram of the structure of a temperature warning circuit provided in another embodiment of this application;

[0036] Figure 3 This is a schematic flowchart of a temperature early warning method provided in another embodiment of this application;

[0037] Figure 4 This is a schematic diagram of the structure of a temperature warning device provided in another embodiment of this application.

[0038] In the attached image:

[0039] 1. Temperature early warning circuit; 10. Multiple temperature sensors; 20. Temperature signal gating module; 30. Main control module; 40. Signal conversion module; 2. Circuit breaker; 3. Cloud platform; 4. Local monitoring equipment. Detailed Implementation

[0040] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0042] Currently, power equipment typically includes switching devices, such as circuit breakers, to control the operation of the equipment. The replacement and maintenance of these switching devices are usually carried out using a periodic management approach. Switching devices that have reached the end of their service life are inspected or replaced according to pre-scheduled maintenance times to avoid failures caused by excessively long operating times.

[0043] The aforementioned equipment cycle management methods often require equipment to be shut down for inspection during maintenance, which affects production efficiency. Furthermore, these methods cannot provide timely warnings for sudden equipment failures, and the manual operation is cumbersome with a low confidence level.

[0044] To address the problems of the prior art, embodiments of this application provide a temperature warning circuit, method, device, and computer storage medium. It should be noted that the embodiments provided in this application are not intended to limit the scope of this application.

[0045] The temperature warning circuit provided in the embodiments of this application will be described below.

[0046] Figure 1 A schematic diagram of a temperature warning circuit 1 provided in an embodiment of this application is shown. It should be noted that this temperature warning circuit can be used to provide temperature warnings for circuit breakers in power equipment. The temperature warning circuit 1 includes multiple temperature sensors 10, a temperature signal gating module 20, and a main control module 30.

[0047] Multiple temperature sensors 10 are respectively installed at multiple temperature detection positions of the circuit breaker 2; multiple channel input terminals of the temperature signal gating module 20 are respectively connected to multiple temperature sensors 10; the first terminal of the main control module 30 is communicatively connected to the output terminal of the temperature signal gating module 20, and the second terminal of the main control module 30 is communicatively connected to the cloud platform 3 or the local monitoring device 4.

[0048] Multiple temperature sensors 10 can detect the temperature at multiple temperature detection locations of the circuit breaker 2, generate corresponding temperature signals for each temperature detection location, and send these signals to the temperature signal gating module 20. For example, the multiple temperature sensors 10 can be multiple thermocouples respectively installed at multiple temperature detection locations of the circuit breaker 2 to measure the corresponding temperature signals at each location. The temperature detection locations can be contacts or busbars of the circuit breaker 2, etc.

[0049] The multiple input channels of the temperature signal gating module 20 can communicate with multiple temperature sensors 10 respectively to receive temperature signals sent by multiple temperature sensors 10.

[0050] The main control module 30 can send a polling selection signal to the temperature signal selection module 20 to poll and obtain the temperature signal input to each channel input terminal. It can also send a temperature warning message to the cloud platform 3 or the local monitoring device 4 when at least one temperature signal meets a preset temperature warning condition. For example, if the main control module 30 determines that at least one temperature signal meets the preset temperature warning condition, it can determine that the current operating state of the circuit breaker 2 is abnormal. When the main control module 30 determines that the temperature of the circuit breaker 2 is abnormal, it can generate corresponding temperature warning information and send it to the cloud platform 3 or the local monitoring device 4, which is communicatively connected to the main control module 30.

[0051] Understandably, when the main control module 30 reports temperature warning information to the cloud platform 3 or the local monitoring device 4, this temperature warning information can be a temperature anomaly code or other data information that can indicate the temperature anomaly and / or the specific location of the anomaly, generated by the main control module 30 after determining the corresponding temperature anomaly based on at least one temperature signal from the temperature signal input terminal of each channel in the polled temperature signal selection module 20. Based on this data information, the cloud platform 3 or the local monitoring device 4 can determine at least one of the following: the temperature anomaly status of the circuit breaker 2 and the specific location of the temperature anomaly.

[0052] In this embodiment, multiple temperature sensors 10 are respectively set at multiple temperature detection positions of the circuit breaker 2 to detect the temperature at the temperature detection position and generate corresponding temperature signals. Multiple channel input terminals of the temperature signal gating module 20 are respectively connected to multiple temperature sensors to receive the corresponding temperature signals. The main control module 30 is connected to the temperature signal gating module 20 to send a polling gating signal to the temperature signal gating module 20 to poll and obtain the temperature signal input at each channel input terminal. When at least one temperature signal meets the preset temperature warning condition, the temperature warning information is sent to the cloud platform or local monitoring equipment so that relevant personnel can take timely countermeasures after receiving the temperature warning information, thereby realizing the health management of the equipment.

[0053] Understandably, when the temperature signal obtained by the main control module 30 is not abnormal, it can also send the obtained temperature signal to the cloud platform 3 or the local monitoring device 4 so that relevant personnel can determine the health status of the circuit breaker 2 based on the received data information.

[0054] In some implementations, the gating signal terminal of the main control module 30 can be connected to the gating control terminal of the temperature signal gating module 20.

[0055] The main control module 30 can also be used to periodically send polling gating signals to the temperature signal gating module 20, so that the temperature signal gating module sequentially sends the temperature signals input from each channel input terminal to the main control module 30 according to the polling gating signals.

[0056] The aforementioned periodic sending of polling selection signals to the temperature signal gating module 20 can be achieved by the main control module 30 setting a corresponding polling selection signal sending cycle based on the circuit breaker's operating characteristics or relevant processing experience, so that the temperature gating module 20 sequentially inputs the temperature signals of each channel to the main control module 30 according to the polling selection signals.

[0057] Figure 2 This is a schematic diagram of a temperature warning circuit provided in another embodiment of this application. In some embodiments, such as... Figure 2 As shown, the temperature warning circuit described above may further include:

[0058] The signal conversion module 40 has its input terminal connected to the output terminal of the temperature signal gating module 20 and its output terminal connected to the first terminal of the main control module 30. The signal conversion module 40 is used to convert the temperature signal sent by the temperature signal gating module 20 from an analog signal to a digital signal.

[0059] In specific implementation, the signal conversion module 40 can be used to receive the temperature signal sent by the temperature signal gating module 20, convert the temperature signal from analog information into a digital signal, and send the converted digital temperature signal to the main control module 30. For example, when the multiple temperature sensors 10 are multiple thermocouples, the multiple temperature signals received by the temperature signal gating module 20 are thermocouple electromotive force signals. Based on this, the signal conversion module 40 receives the multiple thermocouple electromotive force signals sent by the temperature signal gating module 20, converts the multiple thermocouple electromotive force signals into equivalent temperature values, and then sends the converted equivalent temperature values ​​to the main control module 30.

[0060] In some implementations, the signal conversion module 40 may include a cold junction compensation circuit and a temperature conversion circuit;

[0061] The cold junction compensation circuit can be used to perform cold junction compensation on ambient temperature to generate cold junction compensation results;

[0062] The temperature conversion circuit can be connected to the output of the temperature signal gating module 20 and can be used to perform cold junction compensation and analog-to-digital conversion on the received temperature signal based on the cold junction compensation result.

[0063] It should be noted that the cold junction compensation circuit and temperature conversion circuit in the signal conversion module 40 can be integrated circuits or discrete components.

[0064] It is understood that the aforementioned multiple temperature sensors 10 can be multiple thermocouples respectively installed at multiple temperature detection positions of the circuit breaker 2, and the temperature signals generated by the multiple thermocouples are thermoelectric potential signals. Before converting the thermocouple electromotive force signals into equivalent temperature values, it is necessary to compensate for the difference between the thermocouple cold junction and the actual reference value of 0°C. Using the aforementioned cold junction compensation circuit, cold junction compensation can be performed on the ambient temperature, thereby generating a cold junction compensation result for the corresponding thermoelectric potential signal. Through the temperature conversion circuit, the thermoelectric potential signal received based on the cold junction compensation result can be converted into a temperature value and sent to the main control module 30 via a digital signal, so that the main control module 30 can determine the temperature value of the temperature detection position corresponding to the thermocouple. In this way, a more accurate temperature value can be determined.

[0065] In some embodiments, the signal conversion module 40 may further include:

[0066] The internal fault detection circuit can be connected to the output of the temperature signal gating module 20. It can be used to detect the short circuit and / or open circuit state of the temperature sensor based on the received temperature signal, and send a fault signal to the main control module 30 when the temperature sensor is short-circuited or open-circuited.

[0067] It is understandable that when a temperature sensor experiences a short circuit or open circuit, the fault signal sent to the main control module 30 may be a corresponding short circuit and / or open circuit fault code, or other data information that can indicate the fault status of the temperature sensor.

[0068] Figure 3 A flowchart illustrating a temperature warning method according to another embodiment of this application is shown. It should be noted that this method is applied to a temperature warning circuit as provided in any of the above embodiments of this application, and the execution subject of this method can be, but is not limited to, a microcontroller unit, a digital signal processing chip, a microcontroller, or a device terminal, etc. Figure 3 As shown, the temperature warning method includes the following steps:

[0069] S310, send a polling gating signal to the temperature signal gating module;

[0070] S320 receives multiple temperature signals sent by the temperature signal gating module. These multiple temperature signals correspond to the temperatures at multiple temperature detection locations on the circuit breaker.

[0071] S330 outputs a temperature warning message when at least one of the multiple temperature signals meets the preset temperature warning condition.

[0072] This application provides a temperature early warning method that receives multiple temperature signals corresponding to multiple temperature detection locations on a circuit breaker, polled by a temperature signal gating module. When at least one of the multiple temperature signals meets a preset temperature early warning condition, a temperature early warning message is output. Using this temperature early warning method, temperature signals from multiple temperature detection locations can be acquired and abnormal temperature detection can be performed, thus enabling efficient monitoring and management of equipment health status.

[0073] The following example uses an external microcontroller unit (MCU) as the execution entity to illustrate the specific implementation of each of the above steps.

[0074] In S310, a polling gating signal is sent to the temperature signal gating module.

[0075] Specifically, the MCU can communicate with the temperature signal gating module through a configured communication interface to send polling gating signals.

[0076] The aforementioned polling gating signal can be used to instruct the temperature signal gating module to poll and receive temperature signals sent by multiple temperature sensors at a certain time interval.

[0077] In S320, multiple temperature signals are received from the temperature signal gating module. These multiple temperature signals correspond to the temperatures at multiple temperature detection locations on the circuit breaker.

[0078] Specifically, after sending a polling gating signal to the temperature signal gating module, the MCU receives multiple temperature signals polled by the temperature signal gating module through the corresponding communication port.

[0079] In this way, temperature signals can be collected from multiple temperature detection locations on the circuit breaker.

[0080] In S330, when at least one of the multiple temperature signals meets the preset temperature warning condition, a temperature warning message is output.

[0081] Specifically, after the circuit breaker has acquired the temperature corresponding to multiple temperature detection positions by receiving multiple temperature signals sent by the temperature signal gating module, the MCU can process and analyze the received multiple temperature signals. When it detects that at least one temperature signal meets the preset temperature warning condition, it outputs the corresponding temperature warning information.

[0082] Among them, the preset temperature warning condition can be used to determine whether the temperature signal corresponding to multiple temperature detection positions of the circuit breaker is abnormal. As an example, the preset temperature warning condition can be that the temperature signal is higher than a preset value.

[0083] It should be noted that this application does not impose specific restrictions on the above-mentioned preset temperature warning conditions. The temperature warning conditions can be adjusted according to different factors such as the circuit breaker's operating characteristics, materials, and operating environment.

[0084] The aforementioned temperature warning information can be sent by the MCU to indicate abnormal temperature. The output format of the temperature warning information is not limited to code, numerical value, or preset text.

[0085] It should be noted that in some other embodiments, the temperature warning information mentioned above may include, in addition to indicating abnormal temperature conditions, the specific temperature detection location information corresponding to the temperature signal that meets the temperature warning conditions, so that relevant personnel can promptly troubleshoot or handle the corresponding location after receiving the temperature warning information.

[0086] In some implementations, considering practical application needs and to avoid unnecessary resource waste, before outputting temperature warning information when at least one of the multiple temperature signals meets a preset temperature warning condition, the method may further include:

[0087] When the first temperature signal is detected to meet the null anomaly judgment condition, the data of the first temperature signal is set to a preset null value.

[0088] The first temperature signal can be any one of the multiple temperature signals sent by the received temperature signal gating module.

[0089] It should be noted that, typically, the multiple input channels of the aforementioned temperature signal gating module are connected to multiple temperature sensors. However, in specific application scenarios, there may be fewer temperature detection points on the circuit breaker, thus requiring fewer temperature sensors. In this case, if it is inconvenient to adjust the actual number of input channels of the temperature signal gating module, the number of input channels of the temperature signal gating module will be greater than the actual number of temperature sensors, resulting in some input channels being in an unused state.

[0090] The above-mentioned empty channel error judgment condition can be used to determine whether the received temperature signal includes a temperature signal that has an empty channel error due to some channels of the temperature signal gating module being empty.

[0091] When the first temperature signal is detected to meet the condition for an anomaly detection, the data of the first temperature signal is set to a preset null value, for example, the data of the first temperature signal can be set to 0. In this way, when judging whether multiple temperature signals meet the preset temperature warning conditions in the subsequent process, the temperature signal with data set to 0 will not be judged, which not only reduces unnecessary waste of resources, but also avoids interference with the temperature warning process as much as possible.

[0092] In some implementations, to provide more accurate and effective temperature warnings, when at least one of the multiple temperature signals meets a preset temperature warning condition, a temperature warning message is output, which may include:

[0093] When the second temperature signal is detected to be greater than the preset temperature threshold, a temperature warning message is output. The second temperature signal is any one of multiple temperature signals, and the temperature warning message includes the identification information of the temperature detection location corresponding to the second temperature signal.

[0094] The aforementioned preset temperature threshold can be set according to the working characteristics and working environment of different temperature detection locations.

[0095] The identification information of the temperature detection location corresponding to the second temperature signal can be combined with the polling gating signal sent to the temperature signal gating module. Different temperature detection locations can be identified by the polling gating order information of multiple temperature signals, so that relevant personnel can troubleshoot the fault according to the order information of the second temperature signal and the pre-set correspondence between the order and the temperature detection location after receiving the temperature warning information of the second temperature signal.

[0096] In some other embodiments, the identification information of the temperature detection position corresponding to the second temperature signal may also be the temperature detection position encoding information corresponding to the second temperature signal, and this application does not impose any specific limitations on it.

[0097] Figure 4 This is a schematic diagram of the structure of a temperature warning device provided in another embodiment of this application.

[0098] The temperature warning device may include a processor 401 and a memory 402 storing computer program instructions.

[0099] Specifically, the processor 401 may include a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits that can be configured to implement the embodiments of this application.

[0100] Memory 402 may include mass storage for data or instructions. For example, and not limitingly, memory 402 may include a hard disk drive (HDD), floppy disk drive, flash memory, optical disk, magneto-optical disk, magnetic tape, or Universal Serial Bus (USB) drive, or a combination of two or more of these. Where appropriate, memory 402 may include removable or non-removable (or fixed) media. Where appropriate, memory 302 may be internal or external to the integrated gateway disaster recovery device. In a particular embodiment, memory 302 is non-volatile solid-state memory.

[0101] Memory may include read-only memory (ROM), random access memory (RAM), disk storage media devices, optical storage media devices, flash memory devices, and electrical, optical, or other physical / tangible memory storage devices. Therefore, typically, memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the methods according to one aspect of this disclosure.

[0102] The processor 401 reads and executes computer program instructions stored in the memory 402 to implement any of the temperature warning methods in the above embodiments.

[0103] In one example, the data temperature warning device may also include a communication interface 403 and a bus 410. For example, Figure 4 As shown, the processor 401, memory 402, and communication interface 403 are connected through bus 410 and complete communication with each other.

[0104] The communication interface 403 is mainly used to realize communication between various modules, devices, units and / or equipment in the embodiments of this application.

[0105] Bus 410 includes hardware, software, or both, that couples components of a temperature warning device together. For example, and not limitingly, the bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an Infinite Bandwidth Interconnect, a Low Pin Count (LPC) bus, a memory bus, a Microchannel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local (VLB) bus, or other suitable buses, or combinations of two or more of these. Where appropriate, bus 410 may include one or more buses. Although specific buses are described and illustrated in embodiments of this application, any suitable bus or interconnect is contemplated herein.

[0106] The temperature warning device can execute the temperature warning method in the embodiments of this application, thereby achieving... Figure 3 The temperature warning method is described.

[0107] Furthermore, in conjunction with the temperature warning methods described in the above embodiments, this application embodiment can provide a computer storage medium for implementation. The computer storage medium stores computer program instructions; when these computer program instructions are executed by a processor, they implement any of the temperature warning methods described in the above embodiments.

[0108] It should be clarified that this application is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of this application is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the order of steps, after understanding the spirit of this application.

[0109] The functional blocks shown in the above-described structural diagram can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, they can be, for example, electronic circuits, application-specific integrated circuits (ASICs), appropriate firmware, plug-ins, function cards, etc. When implemented in software, the elements of this application are programs or code segments used to perform the required tasks. Programs or code segments can be stored on a machine-readable medium or transmitted over a transmission medium or communication link via data signals carried on a carrier wave. "Machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio frequency (RF) links, etc. Code segments can be downloaded via computer networks such as the Internet, intranets, etc.

[0110] It should also be noted that the exemplary embodiments mentioned in this application describe methods or systems based on a series of steps or apparatus. However, this application is not limited to the order of the above steps; that is, the steps can be performed in the order mentioned in the embodiments, or in a different order, or several steps can be performed simultaneously.

[0111] The aspects of this disclosure have been described above with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It should be understood that each block in the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to produce a machine such that these instructions, executable via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions / actions specified in one or more blocks of the flowchart illustrations and / or block diagrams. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field-programmable logic circuit. It is also understood that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can also be implemented by special-purpose hardware performing the specified functions or actions, or can be implemented by a combination of special-purpose hardware and computer instructions.

[0112] The above description is merely a specific implementation of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. A temperature warning circuit, characterized in that, The temperature warning circuit is used to provide temperature warnings for circuit breakers in power equipment, and the temperature warning circuit includes: Multiple temperature sensors are respectively disposed at multiple temperature detection positions of the circuit breaker. The temperature sensors are used to detect the temperature at the temperature detection position and generate corresponding temperature signals. The multiple temperature sensors are multiple thermocouples, and the temperature signals are thermocouple electromotive force signals. A temperature signal gating module, wherein multiple channel input terminals of the temperature signal gating module are respectively connected to the multiple temperature sensors; The main control module has a first end connected to the output end of the temperature signal gating module and a second end connected to the cloud platform or local monitoring device. The main control module is used to send a polling gating signal to the temperature signal gating module to poll and obtain the temperature signal input to each channel input end, and send a temperature warning information to the cloud platform or local monitoring device when at least one temperature signal meets the preset temperature warning condition. The gating signal terminal of the main control module is connected to the gating control terminal of the temperature signal gating module; the main control module is also used to periodically send a polling gating signal to the temperature signal gating module, so that the temperature signal gating module sequentially sends the temperature signal input from each channel input terminal to the main control module according to the polling gating signal; The temperature warning circuit further includes a signal conversion module, which includes a cold junction compensation circuit and a temperature conversion circuit. The cold junction compensation circuit is used to perform cold junction compensation on the ambient temperature to generate a cold junction compensation result. The temperature conversion circuit is connected to the output of the temperature signal gating module and is used to perform cold junction compensation and analog-to-digital conversion on the received temperature signal according to the cold junction compensation result. The main control module is also used to set the data of the first temperature signal to a preset null value before sending temperature warning information, when it detects that the first temperature signal meets the null anomaly judgment condition. The first temperature signal is any one of the multiple temperature signals.

2. The temperature warning circuit according to claim 1, characterized in that, The signal conversion module also includes: An internal fault detection circuit is connected to the output of the temperature signal gating module. It is used to detect the short-circuit state and / or open-circuit state of the temperature sensor based on the received temperature signal, and to send a fault signal to the main control module when the temperature sensor is short-circuited or open-circuited.

3. A temperature early warning method, characterized in that, The method is applied to a temperature warning circuit as described in any one of claims 1-2, and the method includes: Send a polling gating signal to the temperature signal gating module; Receive multiple temperature signals sent by the temperature signal gating module, wherein the multiple temperature signals are the temperatures corresponding to multiple temperature detection positions on the circuit breaker; When at least one of the multiple temperature signals meets a preset temperature warning condition, a temperature warning message is output. Before outputting temperature warning information when at least one of the plurality of temperature signals meets a preset temperature warning condition, the method further includes: When the first temperature signal is detected to meet the null anomaly judgment condition, the data of the first temperature signal is set to a preset null value, where the first temperature signal is any one of the plurality of temperature signals.

4. The temperature early warning method according to claim 3, characterized in that, When at least one of the multiple temperature signals meets a preset temperature warning condition, a temperature warning message is output, including: When a second temperature signal is detected to be greater than a preset temperature threshold, a temperature warning message is output. The second temperature signal is any one of the plurality of temperature signals, and the temperature warning message includes the identification information of the temperature detection location corresponding to the second temperature signal.

5. A temperature early warning device, characterized in that, The temperature warning device includes: a processor and a memory storing computer program instructions; When the processor executes the computer program instructions, it implements the temperature warning method as described in any one of claims 3-4.

6. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer program instructions that, when executed by a processor, implement the temperature warning method as described in any one of claims 3-4.

7. A computer program product, characterized in that, When the instructions in the computer program product are executed by the processor of the electronic device, the electronic device performs the temperature warning method as described in any one of claims 3-4.

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