Intelligent circuit breaker with temperature monitoring function

Abstract

This invention discloses a smart circuit breaker with temperature monitoring function, belonging to the field of smart circuit breaker technology. It includes a first housing, a second housing, and an internal mounting cavity. The first housing houses a core actuator, an operating mechanism, and a protection mechanism, while the second housing houses an adjustable temperature detection device. It also includes a smart control system, which is communicatively connected to each mechanism and the temperature detection device. The temperature detection device can precisely adjust its monitoring position. The smart control system, through data acquisition, analysis, early warning, and control modules, achieves temperature monitoring, status assessment, tiered early warning, and coordinated control. For minor anomalies, parameters are fine-tuned; for moderate anomalies, non-core circuits are cut off; and for severe anomalies, the circuit is urgently disconnected. This invention solves the problems of traditional circuit breakers, such as lack of temperature monitoring, limited early warning, and rigid protection, improving circuit operation safety and stability, reducing maintenance costs, and adapting to diverse power consumption scenarios.

Description

Technical Field

[0001] This invention relates to the field of smart circuit breaker technology, and in particular to a smart circuit breaker with temperature monitoring function. Background Technology

[0002] As a core protection component in power systems, smart homes, and industrial power distribution, circuit breakers bear the dual critical responsibilities of circuit switching control and fault protection, serving as a vital line of defense for ensuring electrical safety. With the continuous growth of electricity load and the widespread adoption of intelligent power consumption scenarios, the circuit operating environment is becoming increasingly complex, placing higher demands on the comprehensive protection capabilities, status awareness capabilities, and timely response of circuit breakers. Traditional circuit breakers that rely solely on short-circuit and overload protection are no longer adequate to meet the safety requirements of intelligent power consumption.

[0003] Existing circuit breakers generally suffer from functional shortcomings: most traditional products lack temperature monitoring modules, making core heat-generating points prone to abnormal temperature increases due to increased contact resistance. High temperatures accelerate the aging of insulation materials, and when the temperature exceeds the safety threshold, it can easily lead to insulation breakdown or even fire. The few products with temperature monitoring functions can only achieve simple data collection and alarm functions, lacking in-depth analysis of temperature data and unable to form precise linkage with operating and protection mechanisms. Furthermore, they lack intelligent functions such as fault diagnosis and remote operation and maintenance, resulting in loopholes in safety protection and low operation and maintenance efficiency. Therefore, there is an urgent need for a circuit breaker technology solution that integrates precise temperature monitoring and intelligent linkage control. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and propose a smart circuit breaker with temperature monitoring function.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a smart circuit breaker with temperature monitoring function, comprising a first device housing and a second device housing, and an internal mounting cavity formed between the first device housing and the second device housing, characterized in that: a core actuator, an operating mechanism, and a protection mechanism are installed inside the first device housing, and the first device housing and the second device housing are fixed together by fixing bolts, and a temperature detection device for detecting the internal temperature of the circuit breaker is installed inside the second device housing; It also includes an intelligent control system that is communicatively connected to the temperature detection device, core actuator, operating mechanism, and protection mechanism. The intelligent control system is used to collect monitoring data from the temperature detection device, receive operating status signals from each mechanism, and realize intelligent temperature monitoring, operating status analysis, fault early warning, and linkage control functions.

[0006] Preferably, the temperature detection device includes a fixing groove inside the housing of the second device, a positioning plate is horizontally fixed to one corner of the fixing groove, the positioning plate is fixed to the inner wall of the fixing groove inside the housing of the second device, and a sliding groove is horizontally opened on one side of the positioning plate, in which a temperature monitor is slidably installed.

[0007] Preferably, the upper end cover of the temperature monitor is provided with a fixing plate, and the fixing plate has guide holes through it. A guide rod is vertically fixed to the inner wall of the second device housing at the upper end of the guide hole. The guide rod is sleeved in the guide hole, and an internal threaded cylinder is fixed to the inner wall of the second device housing between the guide rods. An adjusting bolt is threadedly connected in the internal threaded cylinder, and the other end of the adjusting bolt is rotatably connected to the middle of the upper end of the fixing plate.

[0008] Preferably, the core actuator includes a terminal block and an arc extinguishing system, wherein the arc extinguishing system includes an arc extinguishing chamber, an arc extinguishing medium, an arc isolation plate, and a grid plate.

[0009] Preferably, the operating mechanism includes an operating handle for manual energy storage or direct opening and closing of the circuit breaker, and a locking device that pushes the moving contact towards the stationary contact and locks it in place via a linkage mechanism.

[0010] Preferably, the protection mechanism includes an electromagnetic trip unit fixedly installed inside the housing of the first device, the electromagnetic trip unit being used to instantly trigger the latch to unlock in the event of a short circuit.

[0011] Preferably, the intelligent control system includes a data acquisition module, a data analysis module, an early warning module, and a control module. These modules work together to achieve intelligent operation and management of the circuit breaker. The data acquisition module is used to collect temperature data output by the temperature detection device in real time, as well as the operating status signals of the core actuator, operating mechanism, and protection mechanism, and transmit the collected signals to the data analysis module after preprocessing. The data analysis module is used to perform trend analysis and anomaly identification on temperature data, and to make a comprehensive judgment by combining the operating status signals of each mechanism to determine the operating status level and potential fault risks of the circuit breaker. The early warning module is used to output early warning information in a preset multi-mode early warning mode when abnormal temperature or abnormal operation of the mechanism is detected, based on the judgment results of the data analysis module, so as to prompt relevant personnel to deal with it in time. The control module is used to send linkage control commands to the operating mechanism or protection mechanism based on the judgment results of the data analysis module, so as to realize automatic disconnection in fault state or adjustment of operating parameters in abnormal working condition, and at the same time receive external control commands and execute corresponding operations.

[0012] Preferably, the specific process of the data analysis module is as follows: The system receives temperature data preprocessed by the data acquisition module and operating status signals of each mechanism, performs time series trend analysis on the temperature data, and extracts feature parameters through a sliding window algorithm. The feature parameters include the rate of temperature change and the duration of abnormal temperature. Then, using preset anomaly judgment rules, and combining temperature characteristic parameters with the operating status signals of each mechanism for cross-verification, temperature anomalies or mechanism operating anomalies are identified. Based on the severity, duration, and scope of the anomaly, the operating status level of the circuit breaker is determined, and the type of potential fault risk and related components are identified.

[0013] Preferably, the specific process of the early warning module is as follows: Receive the operating status level and potential fault risk information output by the data analysis module, and determine whether the preset warning trigger conditions have been met; When the triggering conditions are met, three warning modes—mild, moderate, and severe—are matched according to the operating status level. The mild warning mode outputs a prompt by having a local indicator light stay on. The moderate warning mode outputs information by having a local alternating sound and light alarm. The severe warning mode, while continuously alarming locally with sound and light, pushes a warning signal containing the anomaly type, associated components, and risk level to a preset remote terminal. During the warning process, the warning trigger time, anomaly data, and warning mode information are recorded simultaneously to form a warning log.

[0014] Preferably, the specific process of the control module is as follows: If the data analysis module determines that the abnormality is minor, it sends an operation parameter adjustment command to the operating mechanism to reduce the contact resistance by finely adjusting the contact pressure between the contact and the stationary contact. If the anomaly is determined to be moderate, a partial load disconnection command is sent to the operating mechanism to cut off the on / off control of non-core circuits. If the condition is determined to be a severe abnormality or fault, a linkage trigger command is sent to the protection mechanism to control the electromagnetic trip to start and unlock the locking device, thereby realizing the emergency circuit disconnection. Simultaneously, it receives real-time feedback signals from each mechanism to confirm the completion status of actions and transmits them back to the data analysis module, forming a control closed loop; When an external control command is received, its legality and authority are first verified. If the verification is successful, the command is converted into an execution signal that is adapted to each mechanism and sent out, and the execution result is fed back synchronously.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This solution uses an adjustable temperature detection device, combined with moving average filtering and median filtering algorithms to preprocess data, to accurately capture temperature changes in key areas inside the circuit breaker; the data analysis module of the intelligent control system accurately judges the operating level through trend analysis and anomaly identification, combined with cross-verification of mechanism status signals, and the control module triggers targeted actions such as parameter adjustment, partial load disconnection or emergency disconnection, to avoid insulation aging, breakdown and fire risks from the source, and greatly improve the safety of circuit operation.

[0016] 2. This solution features a three-level early warning mode, combining local audible and visual alerts with remote signal push notifications to ensure timely delivery of abnormal information. The data analysis module can pinpoint the fault type and related components, while the early warning log simultaneously records key information, providing accurate data for maintenance. Maintenance personnel can monitor equipment status in real time without on-site supervision, making fault diagnosis more efficient, effectively reducing downtime, lowering labor and management costs, and adapting to the maintenance needs of intelligent power consumption scenarios.

[0017] 3. This solution's control module implements differentiated control based on the severity of the anomaly: minor anomalies involve fine-tuning the contact pressure to reduce contact resistance; moderate anomalies involve cutting off non-core circuits to reduce load; and severe anomalies trigger emergency disconnection and activate the arc-extinguishing system, avoiding over-protection or under-protection. Simultaneously, by receiving real-time execution feedback signals, a closed loop is formed to ensure precise implementation of control actions. This design not only ensures stable operation of the core load but also quickly interrupts severe faults, adapting to the diverse application needs of power systems, smart homes, and industrial power distribution.

[0018] In summary, this invention addresses the core pain points of traditional circuit breakers, such as lack of temperature monitoring, limited early warning systems, rigid protection mechanisms, and inefficient operation and maintenance, through deep synergy between mechanical structure and intelligent control system. It achieves full-process optimization of accurate temperature monitoring, intelligent anomaly judgment, hierarchical early warning response, closed-loop linkage control, and intelligent operation and maintenance management, which not only significantly improves the safety and stability of circuit operation but also significantly reduces operation and maintenance costs, fully adapting to the diversified needs of modern smart power consumption scenarios. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall three-dimensional structure proposed in this invention; Figure 2 This is a schematic diagram of the overall three-dimensional structure of the other side proposed in this invention; Figure 3 This is a schematic diagram of the internal partial three-dimensional structure proposed in this invention; Figure 4 The present invention proposes Figure 3 Enlarged schematic diagram of the structure at part A in the middle; Figure 5 This is a schematic diagram of the side cross-sectional structure proposed in this invention; Figure 5 This is a schematic diagram of the principle proposed in this invention.

[0020] The numbers in the diagram are: 1. First device housing; 2. Second device housing; 3. Operating handle; 4. Terminal block; 5. Locking device; 6. Electromagnetic trip; 7. Arc extinguishing system; 8. Temperature monitor; 9. Fixing plate; 10. Adjusting bolt; 11. Guide rod; 12. Positioning plate. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] See Figures 1 to 5 This invention discloses a smart circuit breaker with temperature monitoring function, comprising a first device housing 1 and a second device housing 2, and an internal mounting cavity formed between the first device housing 1 and the second device housing 2. The first device housing 1 houses a core actuator, an operating mechanism, and a protection mechanism, and the first device housing 1 and the second device housing 2 are fixed together by fixing bolts. The second device housing 2 houses a temperature detection device for detecting the internal temperature of the circuit breaker. Through the first device housing 1, the second device housing 2, the core actuator, the operating mechanism, the protection mechanism, and the temperature detection device, it is easy to build an overall framework for a smart circuit breaker with temperature monitoring function. The core functions of integrated circuit on / off control, fault protection, and temperature monitoring provide a smart protection foundation for the safe operation of the circuit.

[0023] The temperature detection device includes a fixing groove inside the housing 2 of the second device. A positioning plate 12 is horizontally fixed to one corner of the fixing groove. The positioning plate 12 is fixed to the inner wall of the fixing groove inside the housing 2 of the second device. A sliding groove is horizontally opened on one side of the positioning plate 12. A temperature monitor 8 is slidably installed in the sliding groove. Through the housing 2 of the second device, the positioning plate 12, the temperature monitor 8, and the sliding groove, the installation position of the temperature monitor 8 can be flexibly adjusted to achieve accurate temperature detection of key areas inside the circuit breaker, providing data support for overheat warning. The temperature monitor 8 adopts a PL7103 plug-in type thermal resistor.

[0024] In this invention, a fixing plate 9 is provided on the upper end of the temperature monitor 8. Guide holes are provided around the fixing plate 9. A guide rod 11 is vertically fixed to the inner wall of the second device housing 2 at the upper end of the guide holes, and the guide rod 11 is fitted into the guide holes. An internally threaded cylinder is fixed to the inner wall of the second device housing 2 between the guide rods 11. An adjusting bolt 10 is threadedly connected to the internally threaded cylinder. The other end of the adjusting bolt 10 is rotatably connected to the middle of the upper end of the fixing plate 9. Through the temperature monitor 8, fixing plate 9, guide rod 11, adjusting bolt 10, and internally threaded cylinder, the horizontal position of the temperature monitor 8 can be easily adjusted, ensuring the monitoring components are securely installed and the monitoring points are accurate, thus improving the reliability and adaptability of temperature detection. The core actuator includes a terminal block 4 and an arc-extinguishing system 7. The arc-extinguishing system 7 includes an arc-extinguishing chamber, an arc-extinguishing medium, an arc-isolating plate, and a grid. Through the terminal block 4 and the arc-extinguishing system 7, the wiring for circuit connection and disconnection can be easily achieved. The arc is extinguished during circuit breaking to prevent arc burns to equipment or safety hazards, ensuring the safety and stability of the circuit breaker's circuit breaking. The operating mechanism includes an operating handle 3 for manual energy storage or direct opening and closing, and a locking device 5 that pushes the moving contact to the stationary contact and locks it via a linkage mechanism. Through the operating handle 3, locking device 5, linkage mechanism, moving contact, and stationary contact, manual energy storage and opening / closing operations are easily achieved, and the moving and stationary contacts are precisely connected and separated and locked, ensuring the circuit breaker's controllable switching and operational stability. The protection mechanism includes an electromagnetic trip 6 fixedly installed inside the housing 1 of the first device. The electromagnetic trip 6 is used to instantly trigger the latch to unlock during a short circuit. Through the electromagnetic trip 6 and locking device 5, the latch can be instantly triggered to unlock when a short circuit occurs, quickly breaking the circuit and playing a short-circuit protection role, preventing the short-circuit fault from expanding and causing damage to circuit equipment and personnel.

[0025] The present invention also includes an intelligent control system that is communicatively connected to the temperature detection device and the core actuator, operating mechanism and protection mechanism. The intelligent control system is used to collect monitoring data from the temperature detection device and receive operating status signals from each mechanism to realize intelligent temperature monitoring, operating status analysis, fault early warning and linkage control functions.

[0026] The intelligent control system includes a data acquisition module, a data analysis module, an early warning module, and a control module. These modules work together to achieve intelligent operation and management of the circuit breaker. The data acquisition module is used to collect temperature data output by the temperature detection device in real time, as well as the operating status signals of the core actuator, operating mechanism, and protection mechanism, and transmit the collected signals to the data analysis module after preprocessing. Temperature data is acquired via an ADC interface, with the sampling frequency automatically adjusted according to the circuit breaker's operating conditions (e.g., 1Hz low-frequency sampling during normal operation, switching to 10Hz high-frequency sampling under abnormal conditions). The operating status signals of the core actuator, operating mechanism, and protection mechanism are acquired via an IO interface, including the on / off status of the moving and stationary contacts (detected by limit switches), the operational status of the electromagnetic trip 6 (detected by a Hall sensor), and the position status of the operating handle 3 (detected by an angle sensor), ensuring real-time capture of mechanism actions. The core actuator specifically refers to the component consisting of the terminal block 4 and the arc-extinguishing system 7, where the arc-extinguishing system 7 includes... The arc-extinguishing chamber, arc-extinguishing medium, arc-isolating plate, and grid plate are designed to enable circuit connection and extinguish the arc during circuit breakage, preventing arc-induced safety hazards. The operating mechanism specifically refers to the component consisting of the operating handle 3 and the locking device 5, along with the linkage mechanism, moving contact, and stationary contact. Its core function is to drive the moving contact and stationary contact to precisely connect, separate, and lock in a controlled state through manual energy storage or direct opening and closing operations, thereby enabling controllable circuit switching. The protection mechanism specifically refers to the electromagnetic trip 6 fixedly installed inside the housing of the first device. Its core function is to instantly trigger the locking device 5 to unlock when a short circuit occurs, under the action of a strong magnetic field, to quickly disconnect the circuit and prevent the fault from escalating. The acquired signals undergo preprocessing, specifically by using a combination of moving average filtering and median filtering algorithms to process the raw temperature data and remove interference and noise. The moving average filtering algorithm filters out high-frequency random noise in temperature data, smooths data fluctuations, and preserves the temperature change trend. The algorithm expression is as follows: ,in This represents the j-th filtered effective temperature data, and N represents the sliding window size. This represents the i-th original temperature sampling data, and j represents the sequence number of the current filtered data. The original data collected by the temperature monitor 8 is subjected to the first level of noise reduction. For example, when the sampling frequency is 1Hz, one filtered temperature data is output every 5 seconds to eliminate high-frequency interference caused by power grid fluctuations and sensor jitter.

[0027] Median filtering is used to remove impulse interference (such as abnormal jump values ​​caused by momentary poor sensor contact) to further optimize data quality. The algorithm expression is as follows: ,in This represents the temperature data after median filtering for the j-th time. Let M be the median function, and M represent the size of the median filter window. This represents the temperature data after the j-th moving average filtering. The temperature data after moving average filtering undergoes secondary processing. For example, when the original data experiences a sudden jump of 150℃ due to electromagnetic interference (when the actual temperature is 80℃), median filtering is used to remove this outlier, ensuring the data input to the data analysis module is accurate and reliable. Finally, the median-filtered temperature data... Perform valid range verification and remove invalid values ​​that exceed the preset normal range. Verification formula: NaN represents invalid data, which is automatically discarded by the data acquisition module and temporarily replaced by valid data from the previous moment. This indicates the lower and upper limits of the preset normal range.

[0028] The mechanism's operating status signal is de-jittered using a delay confirmation mechanism (delay time set to 50ms) to eliminate signal jitter caused by mechanical vibration and ensure the accuracy of the status signal. The pre-processed temperature data and the mechanism status signal are transmitted to the data analysis module via an internal data bus.

[0029] The data analysis module is used to perform trend analysis and anomaly identification on temperature data, and to make a comprehensive judgment by combining the operating status signals of each mechanism to determine the operating status level and potential fault risks of the circuit breaker. The early warning module is used to output early warning information in a preset multi-mode early warning mode when abnormal temperature or abnormal operation of the mechanism is detected, based on the judgment results of the data analysis module, so as to prompt relevant personnel to deal with it in time. The control module is used to send linkage control commands to the operating mechanism or protection mechanism based on the judgment results of the data analysis module, so as to realize automatic disconnection in fault state or adjustment of operating parameters in abnormal working condition, and at the same time receive external control commands and execute corresponding operations.

[0030] In this application, the specific process of the data analysis module is as follows: The system receives preprocessed temperature data from the data acquisition module and operating status signals from various mechanisms. It performs time-series trend analysis on the temperature data, constructing temperature change curves at set time intervals, and then applies a preset formula. Calculate the instantaneous rate of temperature change It reflects the rate of temperature change at a given moment and is used to identify rapid temperature rise anomalies. This represents the effective temperature data at time j. This represents the effective temperature data at time jk. The sampling time interval is represented by k, which represents the number of time interval steps; abnormal heating conditions are set, including abnormal heating time. and temperature abnormal change threshold ;like And the duration exceeds the abnormal temperature rise time. When a rapid temperature rise is detected, such as a precursor to a short circuit or severe contact failure of the contacts, the temperature will rise sharply. This algorithm can quickly capture this feature. By preset formula Calculate the average rate of change of the window Where L represents the size of the rate calculation window, This represents the instantaneous rate of temperature change at time m; it is used to distinguish between "instantaneous fluctuations" and "trend-based temperature increases." For example, a brief temperature increase during device startup (high instantaneous rate but low average rate) will not trigger an anomaly, while a sustained temperature increase (high average rate) will be accurately identified. The duration for which the temperature exceeds a preset temperature anomaly threshold is recorded is used to determine the severity of the anomaly, based on a preset formula. Calculate the duration of abnormal temperature ,in This represents the unit step function, where u=1 when the input value is ≥0 and u=0 when the input value is <0. This indicates the threshold for determining temperature anomalies (divided according to the warning level). T represents the size of the duration statistics window, with a value range of [30, 300]. A pre-defined anomaly detection rule base is provided, including rules for temperature anomalies and rules for mechanism state anomalies. Cross-validation is achieved using logical AND / OR operations. Temperature Anomaly Detection Logic Formula: ; in, This represents the temperature anomaly determination result (Boolean value) at time j. Indicates an anomaly. This indicates that it is normal; The logic formula for determining anomalies in the organization's status is as follows: ;in This represents the result (Boolean value) of the mechanism state anomaly determination at time j. Indicates an anomaly. This indicates that it is normal; Indicates the position status of the operating handle (1 = closed, 0 = open); Indicates the on / off state of the moving contact and the stationary contact (1 = closed, 0 = open); Indicates the electromagnetic tripping status (1 = activated, 0 = not activated); I represents the real-time circuit current. This represents the short-circuit current threshold, which is 10 times the rated current. Indicates the magnitude of the sudden change in the position of the control handle (1 = normal switching, >1 = abnormal change). This indicates a manual operation record (1 = operation performed, 0 = no operation performed). The temperature anomaly determination results are then combined with the mechanism state anomaly determination results, and a comprehensive anomaly determination formula is used. Calculate the comprehensive anomaly determination result (Boolean value) at time j. This indicates that an anomaly exists. This indicates that it is normal; Based on extracted feature parameters (effective temperature data) Average rate of change Duration Construct feature vectors and calculate their similarity with a pre-defined fault feature library to identify fault types: By calculating the similarity between real-time feature vectors and standard vectors in the fault feature database, the fault type and associated components are located. The expression is as follows: ;in Represents real-time feature vectors With the standard vector of the h-th type of fault Similarity; Represents the real-time feature vector. (Temperature normalized value) (Rate normalization value) (Duration normalized value); The standard feature vector representing the h-th type of fault (pre-defined in the fault feature library); This represents the weight of the g-th feature; Based on the comprehensive anomaly assessment results Similarity and duration of abnormality The operating status is divided into four levels, and the judgment formula is as follows:

[0031] in, The operating status level (0=normal, 1=mild, 2=moderate, 3=severe) is used to trigger corresponding strategies of subsequent warning and control modules.

[0032] In this application, the specific process of the early warning module is as follows: The system receives the operating status level and potential fault risk information output by the data analysis module, and determines whether the preset level three warning trigger condition has been met. The trigger logic formula is as follows: ; When the triggering conditions are met, three warning modes—mild, moderate, and severe—are matched according to the operating status level. The mild warning mode outputs a prompt by having a local indicator light stay on. The moderate warning mode outputs information by having a local alternating sound and light alarm. The severe warning mode, while continuously alarming locally with sound and light, pushes a warning signal containing the anomaly type, associated components, and risk level to a preset remote terminal. During the warning process, the warning trigger time, anomaly data, and warning mode information are recorded simultaneously to form a warning log.

[0033] In this application, the specific process of the control module is as follows: If the data analysis module determines that the abnormality is minor, it sends an operation parameter adjustment command to the operating mechanism to reduce the contact resistance by finely adjusting the contact pressure between the contact and the stationary contact. If the anomaly is determined to be moderate, a partial load disconnection command is sent to the operating mechanism to cut off the on / off control of non-core circuits. If the condition is determined to be a severe abnormality or fault, a linkage trigger command is sent to the protection mechanism to control the electromagnetic trip 6 to start and unlock the locking device 5, thereby realizing the emergency circuit disconnection. Simultaneously, it receives real-time feedback signals from each mechanism to confirm the completion status of actions and transmits them back to the data analysis module, forming a control closed loop;

[0034] When an external control command is received, its legality and authority are first verified. If the verification is successful, the command is converted into an execution signal that is adapted to each mechanism and sent out, and the execution result is fed back synchronously.

[0035] The complete implementation process of the hardware and software collaborative operation of the smart circuit breaker with temperature monitoring function proposed in this invention is as follows: During the closing start-up phase: The operator manually pulls the operating handle 3. The angle sensor detects the closing position signal of the handle and transmits it to the data acquisition module. After preprocessing, it is sent to the data analysis module. The data analysis module determines that it is a closing operation and feeds back to the control module. The control module sends a locking command to the locking device 5. The locking device 5 pushes the moving contact and stationary contact to close through the linkage mechanism. The limit switch detects the contact closure signal and feeds back to the control module. The control module confirms that the closing is successful and the circuit breaker enters the normal operation state. At the same time, the temperature monitor 8 starts temperature acquisition. The data acquisition module collects temperature data and the operating status signals of each mechanism at a preset frequency. After filtering and anti-jitter preprocessing, the data is transmitted to the data analysis module. The arc extinguishing system 7 enters the standby state simultaneously.

[0036] During normal operation: The data analysis module continuously receives pre-processed temperature data and mechanism status signals. The analysis result is no abnormality, and the operating status level is judged to be normal. The early warning module does not activate any early warning mode. The control module maintains the current operating parameters (contact pressure between moving and stationary contacts, and operating status of the entire branch). The data storage module records temperature data and operating status according to a preset cycle. Each software module operates according to a low-power strategy to save energy.

[0037] Exception handling phase: Handling of minor anomalies: When the temperature monitor 8 detects a temperature exceeding the minor anomaly threshold, the data acquisition module preprocesses the data and transmits it to the data analysis module. After trend analysis, anomaly identification, and comprehensive judgment, it is determined to be a minor anomaly. The early warning module activates the minor early warning mode, the local yellow indicator light stays on, and the early warning log is recorded. The control module sends a contact pressure adjustment command to the micro-drive component of the operating mechanism, driving the linkage mechanism to fine-tune the contact position to increase the contact pressure and reduce the contact resistance. After adjustment, the data acquisition module continues to collect temperature data. If the temperature drops to the normal range within a preset time, the data analysis module updates the operating status level to normal, and the early warning is lifted.

[0038] Moderate Anomaly Handling: If the temperature continues to rise above the moderate anomaly threshold, or multiple mild anomalies overlap, the data analysis module determines it to be a moderate anomaly; the early warning module activates the moderate early warning mode, the local yellow indicator light flashes, the buzzer sounds an alternating alarm, and the abnormal information is displayed on the local screen; the control module sends a partial load disconnection command to the operating mechanism according to the calculation results, cutting off a preset number of non-core circuits; after disconnection, the temperature is continuously monitored, and if the temperature drops to a safe range within a preset time, the current state is maintained and an early warning is continuously issued, waiting for maintenance personnel to investigate.

[0039] Severe Anomaly Handling: If the temperature rises further above the severe anomaly threshold, or the duration of the anomaly reaches the preset upper limit, or a short-circuit fault signal is received, the data analysis module determines it to be a severe anomaly; the early warning module activates the severe early warning mode, the local red indicator light flashes rapidly and the buzzer sounds continuously, and at the same time, it pushes an early warning signal containing information such as the anomaly type, related components, and risk level to a preset remote terminal through the remote communication module; the control module sends a linkage trigger command to the electromagnetic trip 6 of the protection mechanism, the electromagnetic trip 6 activates to trigger the locking device 5 to unlock, the moving contact quickly separates from the stationary contact under the action of the reset spring, the arc extinguishing system 7 is activated and quickly extinguishes the arc generated during the disconnection process, realizing the emergency circuit disconnection.

[0040] Reset Operation Phase: After troubleshooting and eliminating the fault, the maintenance personnel manually operate the operating handle 3 to repeat the operation of the closing and starting phase. The locking device 5 pushes the moving contact and stationary contact to close and lock again. The control module confirms that the closing is successful, the circuit breaker resumes normal operation, and all software modules synchronously resume normal monitoring and control status.

[0041] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A smart circuit breaker with temperature monitoring function, comprising a first device housing (1) and a second device housing (2), and an internal mounting cavity formed between the first device housing (1) and the second device housing (2), characterized in that: The first device housing (1) is equipped with a core actuator, an operating mechanism, and a protection mechanism. The first device housing (1) and the second device housing (2) are fixed together by fixing bolts. The second device housing (2) is equipped with a temperature detection device for detecting the internal temperature of the circuit breaker. It also includes an intelligent control system that is communicatively connected to the temperature detection device, core actuator, operating mechanism, and protection mechanism. The intelligent control system is used to collect monitoring data from the temperature detection device, receive operating status signals from each mechanism, and realize intelligent temperature monitoring, operating status analysis, fault early warning, and linkage control functions. The intelligent control system includes a data acquisition module, a data analysis module, an early warning module, and a control module. These modules work together to achieve intelligent operation and management of the circuit breaker. The data acquisition module is used to collect temperature data output by the temperature detection device in real time, as well as the operating status signals of the core actuator, operating mechanism, and protection mechanism, and transmit the collected signals to the data analysis module after preprocessing. The data analysis module is used to perform trend analysis and anomaly identification on temperature data, and to make a comprehensive judgment by combining the operating status signals of each mechanism to determine the operating status level and potential fault risks of the circuit breaker. The early warning module is used to output early warning information in a preset multi-mode early warning mode when abnormal temperature or abnormal operation of the mechanism is detected, based on the judgment results of the data analysis module, so as to prompt relevant personnel to deal with it in time. The control module is used to send linkage control commands to the operating mechanism or protection mechanism based on the judgment results of the data analysis module, so as to realize automatic disconnection in fault state or adjustment of operating parameters in abnormal working condition, and at the same time receive external control commands and execute corresponding operations. The specific process of the data analysis module is as follows: The system receives temperature data preprocessed by the data acquisition module and operating status signals of each mechanism, performs time series trend analysis on the temperature data, and extracts feature parameters through a sliding window algorithm. The feature parameters include the rate of temperature change and the duration of abnormal temperature. Then, using preset anomaly judgment rules, and combining temperature characteristic parameters with the operating status signals of each mechanism for cross-verification, temperature anomalies or mechanism operating anomalies are identified. Based on the severity, duration, and scope of the anomaly, the operating status level of the circuit breaker is determined, and the type of potential fault risk and related components are identified. The specific process of the early warning module is as follows: Receive the operating status level and potential fault risk information output by the data analysis module, and determine whether the preset warning trigger conditions have been met; When the triggering conditions are met, three levels of early warning modes—mild, moderate, and severe—are matched according to the operating status level. The mild early warning mode outputs a prompt by keeping the local indicator light on. The moderate early warning mode outputs information by alternating local sound and light alarms. The severe early warning mode, while continuously alarming with local sound and light, pushes an early warning signal containing the abnormality type, related components, and risk level to a preset remote terminal. During the early warning process, the early warning trigger time, abnormal data, and early warning mode information are recorded simultaneously to form an early warning log. The specific process of the control module is as follows: If the data analysis module determines that the abnormality is minor, it sends an operation parameter adjustment command to the operating mechanism to reduce the contact resistance by finely adjusting the contact pressure between the contact and the stationary contact. If the anomaly is determined to be moderate, a partial load disconnection command is sent to the operating mechanism to cut off the on / off control of non-core circuits. If the condition is determined to be a severe abnormality or fault, a linkage trigger command is sent to the protection mechanism to control the electromagnetic trip (6) to start and unlock the locking device (5) to realize the emergency circuit disconnection; Simultaneously, it receives real-time feedback signals from each mechanism to confirm the completion status of actions and transmits them back to the data analysis module, forming a control closed loop; When an external control command is received, its legality and authority are first verified. If the verification is successful, the command is converted into an execution signal that is adapted to each mechanism and sent out, and the execution result is fed back synchronously.

2. The intelligent circuit breaker with temperature monitoring function according to claim 1, characterized in that: The temperature detection device includes a fixing groove inside the housing (2) of the second device. A positioning plate (12) is horizontally fixed to one corner of the fixing groove. The positioning plate (12) is fixed to the inner wall of the fixing groove inside the housing (2) of the second device. A sliding groove is horizontally opened on one side of the positioning plate (12), and a temperature monitor (8) is slidably installed in the sliding groove.

3. A smart circuit breaker with temperature monitoring function according to claim 1, characterized in that: The core actuator includes a terminal block (4) and an arc extinguishing system (7), wherein the arc extinguishing system (7) includes an arc extinguishing chamber, an arc extinguishing medium, an arc isolation plate, and a grid plate.

4. A smart circuit breaker with temperature monitoring function according to claim 1, characterized in that: The operating mechanism includes an operating handle (3) for manual energy storage or direct opening and closing of the circuit breaker and a locking device (5) for pushing the moving contact to the stationary contact and locking it through a linkage mechanism.

5. A smart circuit breaker with temperature monitoring function according to claim 1, characterized in that: The protection mechanism includes an electromagnetic trip (6) fixedly installed inside the housing (1) of the first device, the electromagnetic trip (6) being used to instantly trigger the latch to unlock in the event of a short circuit.

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