Signal monitoring device and fault analysis method

Abstract

The invention provides a signal monitoring device and a fault analysis method, and relates to the technical field of circuit breakers. The device comprises a signal detection module, a main control module, a communication module and a signal indication module, the input end of the signal detection module is connected with a thermomagnetic mechanism of the circuit breaker equipment, and the output end of the signal detection module is connected with the main control module; the main control module is also respectively connected with the communication module and the signal indication module; the signal detection module is used for transmitting a magnetic alarm signal to the main control module under the triggering of the thermomagnetic mechanism; the main control module is used for controlling signal display of the signal indication module according to the magnetic alarm signal and sending a target signal to external equipment through the communication module according to the magnetic alarm signal; and the main control module is also used for determining a fault analysis result of the circuit breaker equipment according to the magnetic alarm signal and the auxiliary signal, and sending the fault analysis result to external equipment through the communication module. By means of the device, accurate monitoring of the product state is achieved, and the fault analysis accuracy is improved.

Description

Technical Field

[0001] This application relates to the field of circuit breaker technology, and more specifically, to a signal monitoring device and a fault analysis method. Background Technology

[0002] Thermal-magnetic circuit breakers are an important circuit protection device. They protect circuits by combining thermal and electromagnetic protection, and have advantages such as high sensitivity, good stability, and convenient installation. They are widely used in industrial and civil circuits.

[0003] Currently, the status detection of thermal-magnetic circuit breakers can be achieved by adding electronic accessories. However, this can only detect the status of the moving and stationary contacts and the operating mechanism of the thermal-magnetic circuit breaker, and cannot detect the status of the thermal-magnetic mechanism. This results in limitations in fault analysis and makes it impossible to accurately determine the true cause of product failure or tripping. Summary of the Invention

[0004] The purpose of this application is to address the shortcomings of the prior art by providing a signal monitoring device and a fault analysis method to improve the accuracy of product fault analysis.

[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows:

[0006] In a first aspect, embodiments of this application provide a signal monitoring device, including: a signal detection module, a main control module, a communication module, and a signal indication module;

[0007] The input terminal of the signal detection module is connected to the thermomagnetic mechanism of the circuit breaker device, and the output terminal of the signal detection module is connected to the main control module.

[0008] The main control module is also connected to the communication module and the signal indication module respectively;

[0009] The signal detection module is used to transmit a magnetic alarm signal to the main control module when triggered by the thermomagnetic mechanism;

[0010] The main control module is used to control the signal display of the signal indicator module according to the magnetic alarm signal, and to send a target signal to an external device according to the magnetic alarm signal and through the communication module.

[0011] The main control module is also used to determine the product's fault analysis results based on the magnetic alarm signal and auxiliary signals, and send the fault analysis results to the external device through the communication module. The auxiliary signals include: the opening and closing signals of the moving and stationary contacts and the alarm signals of the actuating mechanism.

[0012] Optionally, the signal detection module includes: a push rod and a micro switch;

[0013] The signal detection module is specifically used to transmit the collected magnetic alarm signal to the main control module when the thermomagnetic mechanism pushes the top rod and the top rod triggers the micro switch to close.

[0014] Optionally, the main control module is further configured to receive a control signal for canceling the alarm sent by the communication module, and control the signal indication module to cancel the signal display according to the control signal for canceling the alarm.

[0015] Optionally, the device further includes: a signal output module;

[0016] One end of the signal output module is connected to the main control module, and the other end of the signal output module is used to connect to an external device; the external device includes: a padlock device;

[0017] The signal output module is used to output a control signal to control the padlock device to self-lock when it receives the magnetic alarm signal sent by the main control module.

[0018] Optionally, the main control module is also used to send a control signal to the signal output module to cancel the alarm, so that the signal output module controls the padlock device to return to its initial state.

[0019] Optionally, the input terminal of the signal detection module is also connected to an auxiliary contact;

[0020] The signal detection module is also used to transmit the collected status signals of the moving and stationary contacts to the main control module when triggered by the auxiliary contact;

[0021] The main control module is also used to send the status signals of the moving and stationary contacts to the external device through the communication module.

[0022] Optionally, the input terminal of the signal detection module is also connected to the actuation mechanism;

[0023] The signal detection module is also used to transmit the collected status signal of the motion mechanism to the main control module when the motion mechanism is in motion.

[0024] The main control module is also used to send the status signal of the action mechanism to the external device through the communication module.

[0025] Secondly, embodiments of this application also provide a fault analysis method, applied to the main control module of the signal monitoring device described in the first aspect, the method comprising:

[0026] The status signals of the circuit breaker device are collected, including: magnetic alarm signals of the thermal-magnetic mechanism, opening and closing signals of the moving and stationary contacts, and alarm signals of the operating mechanism;

[0027] Based on each status signal, determine the fault analysis results of the product;

[0028] The fault analysis results are sent to the external device via the communication module.

[0029] Optionally, determining the fault analysis result of the product based on each state signal includes:

[0030] If the thermomagnetic mechanism outputs a magnetic alarm signal, the actuating mechanism outputs an alarm signal, and the moving and stationary contacts output a tripping signal, then the fault analysis result is determined to be a short circuit fault in the product.

[0031] Optionally, determining the fault analysis result of the product based on each state signal includes:

[0032] If the thermomagnetic mechanism does not output a magnetic alarm signal, the actuating mechanism outputs an alarm signal, and the moving and stationary contacts output a tripping signal, then the fault analysis result is determined to be a manual tripping or overload fault in the product.

[0033] The beneficial effects of this application are:

[0034] This application provides a signal monitoring device and a fault analysis method. The signal monitoring device includes a signal detection module, a main control module, a communication module, and a signal indication module. The input terminal of the signal detection module is connected to the thermomagnetic mechanism of the circuit breaker, and the output terminal of the signal detection module is connected to the main control module. The main control module is also connected to the communication module and the signal indication module. The signal detection module transmits a magnetic alarm signal to the main control module when triggered by the thermomagnetic mechanism. The main control module controls the signal display of the signal indication module based on the magnetic alarm signal, and sends a target signal to an external device through the communication module based on the magnetic alarm signal. The main control module also determines the fault analysis result of the circuit breaker based on the magnetic alarm signal and auxiliary signals, and sends the fault analysis result to an external device through the communication module. The auxiliary signals include the opening and closing signals of the moving and stationary contacts and the alarm signal of the operating mechanism. By connecting the signal detection module to the thermomagnetic mechanism, the acquisition and transmission of the magnetic alarm signal can be realized, overcoming the problem of difficult magnetic alarm signal detection in the prior art. The main control module enables remote transmission of magnetic alarm signals, thus facilitating remote monitoring of the circuit breaker equipment. Furthermore, the main control module controls the signal indicator module to display the alarm signals, enabling local monitoring of the circuit breaker equipment. Additionally, the main control module combines magnetic alarm signals and auxiliary signals to perform fault analysis, providing accurate results and, to some extent, identifying the specific type of fault, thus facilitating subsequent maintenance. The fault analysis results can also be sent to external devices via the communication module, enabling remote fault monitoring.

[0035] The fault analysis method includes: collecting status signals from the circuit breaker equipment, including magnetic alarm signals from the thermal-magnetic mechanism, opening and closing signals from the moving and stationary contacts, and alarm signals from the operating mechanism; determining the fault analysis results based on each status signal; and sending the fault analysis results to external devices via a communication module. By combining magnetic alarm signals with auxiliary signals such as the opening and closing signals from the moving and stationary contacts and the alarm signals from the operating mechanism for fault analysis, the product's status detection becomes more comprehensive and specific, thereby improving the accuracy of the fault analysis results and identifying the type of fault, thus facilitating product maintenance. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the structure of a signal monitoring device provided in an embodiment of this application;

[0038] Figure 2 This is a schematic diagram of another signal monitoring device provided in an embodiment of this application;

[0039] Figure 3 This is a schematic diagram of the structure of another signal monitoring device provided in the embodiments of this application;

[0040] Figure 4 A flowchart illustrating a fault analysis method provided in an embodiment of this application;

[0041] Figure 5 This is a schematic diagram of the structure of a main control module provided in an embodiment of this application. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the accompanying drawings in this application are for illustrative and descriptive purposes only and are not intended to limit the scope of protection of this application. Furthermore, it should be understood that the schematic drawings are not drawn to scale. The flowcharts used in this application illustrate operations implemented according to some embodiments of this application. It should be understood that the operations in the flowcharts may not be implemented in sequence, and steps without logical contextual relationships may be reversed or implemented simultaneously. In addition, those skilled in the art, guided by the content of this application, may add one or more other operations to the flowcharts, or remove one or more operations from the flowcharts.

[0043] Furthermore, the described embodiments are merely some, not all, of the embodiments of this application. The components of the embodiments of this application described and illustrated herein can typically be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0044] It should be noted that the term "comprising" will be used in the embodiments of this application to indicate the presence of the features declared thereafter, but does not exclude the addition of other features.

[0045] Thermal-magnetic circuit breakers generally have basic overload protection and short-circuit instantaneous protection. Since there is no electronic component involved, it is difficult to determine the cause of the trip or other fault when the product trips. Moreover, it is difficult to observe the real-time status of the product locally or remotely. Once a trip or fault occurs, it is necessary to go to the site for troubleshooting as soon as possible. It is highly likely that the product will be disassembled and analyzed to determine the cause, making it impossible to quickly determine the product status and resulting in high maintenance costs.

[0046] There are generally two approaches to achieving status monitoring of thermal-magnetic circuit breakers using existing technologies. The first is a purely structural approach, where status indicators are mounted on structural components. However, this approach only displays status indicators when a short-circuit fault occurs due to a large current. Moreover, the structural approach is space-consuming and complex, cannot achieve remote monitoring, has limited functional scalability, and is not easy to maintain. The second approach involves adding electronic accessories, which enables both local and remote status monitoring. However, existing technologies only monitor the status of the moving and stationary contacts and the actuating mechanism. When a circuit breaker trips, the specific cause of the trip cannot be determined, so both approaches have certain limitations.

[0047] Based on this, this solution provides a signal monitoring device, which may include a signal detection module, a main control module, a communication module, and a signal indication module. The signal detection module monitors the magnetic alarm signal of the thermomagnetic mechanism and sends it to the main control module. The main control module controls the signal indication module to display the alarm signal based on the magnetic alarm signal, facilitating status monitoring for local users. Additionally, the main control module can send the magnetic alarm signal to external devices via the communication module for remote real-time status monitoring. To more accurately determine product status and fault causes, the main control module can also combine the magnetic alarm signal and auxiliary signals for fault analysis, improving the accuracy of the analysis results. Simultaneously, the fault analysis results can be sent to external devices via the communication module for remote fault monitoring.

[0048] Figure 1 This is a schematic diagram of a signal monitoring device provided in an embodiment of this application. Figure 1 As shown, the signal monitoring device may include: a signal detection module, a main control module, a communication module, and a signal indication module.

[0049] The input terminal of the signal detection module is connected to the thermomagnetic mechanism of the circuit breaker, and the output terminal of the signal detection module is connected to the main control module.

[0050] When a short circuit or instantaneous high current occurs in the circuit breaker, the thermal-magnetic mechanism of the circuit breaker will activate. The signal detection module can then detect the activation of the thermal-magnetic mechanism, acquire its status signal, and transmit it to the main control module.

[0051] The main control module is also connected to the communication module and the signal indication module.

[0052] The signal indication module can be used for status display to achieve local monitoring of the status signals of the circuit breaker equipment. Optionally, the signal indication module may include signal indicator lights. The signal indication module can display or cancel signal display under the control of the main control module.

[0053] The signal detection module is used to transmit the magnetic alarm signal to the main control module when triggered by the thermomagnetic mechanism.

[0054] When a short circuit or instantaneous high current occurs in the circuit breaker, the thermal-magnetic mechanism of the circuit breaker will trigger the signal detection module to collect signals. At this time, the signal detection module can collect the magnetic alarm signal of the thermal-magnetic mechanism, and then transmit the magnetic alarm signal to the main control module.

[0055] If the circuit breaker does not experience a short circuit or a sudden large current, the thermomagnetic mechanism will not activate, and the signal detection module will not be able to collect the magnetic alarm signal.

[0056] The main control module is used to control the signal display of the signal indicator module according to the magnetic alarm signal, and to send the target signal to external devices through the communication module according to the magnetic alarm signal.

[0057] In some embodiments, the main control module can control the signal indication module to display signals based on the magnetic alarm signal. For example, taking a signal indication module that includes a signal indicator corresponding to the thermomagnetic mechanism as an example, when the main control module receives the magnetic alarm signal, it can send a command to the signal indication module to control the signal indicator corresponding to the thermomagnetic mechanism to light up, thereby allowing local users to promptly grasp the current status of the circuit breaker equipment.

[0058] The main control module may include an MCU (Microcontroller Unit) and a memory.

[0059] Optionally, the main control module can also directly send the magnetic alarm signal to an external device through the communication module, so that users can remotely monitor the status of the circuit breaker through the external device.

[0060] Alternatively, the main control module can first perform analog-to-digital conversion on the magnetic alarm signal to obtain the target signal, and then send the target signal to the external device through the communication module.

[0061] The external device can be a host computer or a client, which can display the magnetic alarm signal on the host computer or client so that users can view it remotely.

[0062] Optionally, the communication module can adopt an isolation scheme, including a signal isolation chip and a communication chip, or other isolation schemes can be used instead. The communication bus can be RS485 (Recommended Standard), CAN (Controller Area Network), or other forms of communication, and the method can be wired or wireless.

[0063] The main control module is also used to determine the product's fault analysis results based on the magnetic alarm signal and auxiliary signals, and send the fault analysis results to external devices through the communication module. The auxiliary signals include the opening and closing signals of the moving and stationary contacts and the alarm signals of the actuating mechanism.

[0064] In some embodiments, the main control module can also perform fault analysis on the product based on magnetic alarm signals and auxiliary signals. The product can be the electrical equipment where the circuit breaker device is located. The circuit breaker device is used to protect electrical equipment.

[0065] Auxiliary signals may include the opening and closing signals of the moving and stationary contacts, as well as alarm signals from the actuating mechanism. Combining magnetic alarm signals with auxiliary signals for fault analysis improves the accuracy of the analysis results. It also helps determine the specific fault type, enabling users to perform quick and accurate repairs.

[0066] The main control module can also send the obtained fault analysis results to external devices through the communication module, so that users can remotely monitor the fault.

[0067] In summary, the signal monitoring device provided in this embodiment includes: a signal detection module, a main control module, a communication module, and a signal indication module. The input terminal of the signal detection module is connected to the thermomagnetic mechanism of the circuit breaker, and the output terminal of the signal detection module is connected to the main control module. The main control module is also connected to the communication module and the signal indication module. The signal detection module transmits a magnetic alarm signal to the main control module when triggered by the thermomagnetic mechanism. The main control module controls the signal display of the signal indication module according to the magnetic alarm signal, and sends a target signal to an external device through the communication module according to the magnetic alarm signal. The main control module also determines the fault analysis result of the circuit breaker based on the magnetic alarm signal and auxiliary signals, and sends the fault analysis result to an external device through the communication module. The auxiliary signals include: the opening and closing signals of the moving and stationary contacts and the alarm signal of the operating mechanism. By connecting the signal detection module to the thermomagnetic mechanism, the acquisition and transmission of the magnetic alarm signal can be realized, overcoming the problem of difficult magnetic alarm signal detection in the prior art. The main control module enables remote transmission of magnetic alarm signals, thus facilitating remote monitoring of the circuit breaker equipment. Furthermore, the main control module controls the signal indicator module to display the alarm signals, enabling local monitoring of the circuit breaker equipment. Additionally, the main control module combines magnetic alarm signals and auxiliary signals to perform fault analysis, providing accurate results and, to some extent, identifying the specific type of fault, thus facilitating subsequent maintenance. The fault analysis results can also be sent to external devices via the communication module, enabling remote fault monitoring.

[0068] Figure 2 This is a schematic diagram of another signal monitoring device provided in an embodiment of this application. Figure 2 As shown, the signal detection module may include a push rod and a micro switch.

[0069] One end of the push rod is connected to the thermomagnetic mechanism, and the other end of the push rod is connected to the micro switch; the other end of the micro switch is connected to the main control module.

[0070] The signal detection module is specifically used to transmit the collected magnetic alarm signal to the main control module when the thermomagnetic mechanism pushes the push rod and the push rod triggers the micro switch to close.

[0071] When a short circuit or instantaneous high current occurs in the product, the thermomagnetic mechanism of the circuit breaker will push the push rod to trigger the micro switch to close, so that the signal detection module can transmit the collected magnetic alarm signal to the main control module.

[0072] If the product does not experience a short circuit or a sudden large current, the thermomagnetic mechanism will not push the push rod, the micro switch will not close, and the signal detection module will not be able to collect the magnetic alarm signal.

[0073] Optionally, the main control module is also used to receive a control signal to cancel the alarm sent by the communication module, and to control the module to cancel the signal display according to the control signal to cancel the alarm.

[0074] In some embodiments, the alarm signal needs to be cleared immediately after the product malfunction is resolved. The user can trigger alarm cancellation via an external device, which sends a control signal to the main control module via the communication module. Upon receiving the alarm cancellation control signal, the main control module instructs the module to cancel the signal display. For example, the signal indicator light corresponding to the thermomagnetic mechanism can be turned off to cancel the alarm.

[0075] Optionally, a button can be added to the signal monitoring device. Pressing the button on the signal monitoring device can trigger a control signal to cancel the alarm, thereby realizing the function of local alarm cancellation; alternatively, a virtual button can be pressed on the client to trigger the generation of an alarm cancellation control signal; or a physical button can be added to the client to trigger alarm cancellation, thereby realizing the function of remote alarm cancellation. The specific triggering method is not limited.

[0076] Figure 3 This is a schematic diagram of the structure of another signal monitoring device provided in the embodiments of this application, as shown below. Figure 3 As shown, the device may further include: a signal output module; one end of the signal output module is connected to the main control module, and the other end of the signal output module is used to connect to an external device; the external device includes: a padlock device; the signal output module is used to output a control signal to control the padlock device to self-lock when it receives a magnetic alarm signal sent by the main control module.

[0077] The other end of the signal output module is used to connect to an external device. When the connected external device is a padlock, the main control module, upon receiving the magnetic alarm signal, can immediately send a control command to the signal output module to control the signal output module to output relevant signals to the padlock, thereby controlling the padlock to self-lock and preventing the circuit breaker from being closed again before the cause of the alarm is identified, which could damage the equipment. Once the padlock is self-locked, the circuit breaker will not be able to close until a cancellation signal is received.

[0078] Of course, the function of the signal output module is not limited to this. When the external device connected to the other end of the signal output module is a user or other fire protection or linkage device, the main control module can output the magnetic alarm signal to the user or other fire protection or linkage device through the signal output module, so that the magnetic alarm signal can be responded to in a timely manner.

[0079] When the external device connected to the other end of the signal output module is a power operating device, the user can remotely control the signal output module, thereby controlling the power operating device to perform opening and closing operations through the signal output module.

[0080] The functions of the signal output module are not limited to those listed above. Furthermore, the signal output module can be implemented using relays, optocouplers, or other methods.

[0081] It is worth noting that the main control module can control the signal output module to perform corresponding functions based on the alarm signal. The alarm signal here is not limited to the magnetic alarm signal. When it is any other alarm signal, the main control module can control the signal output module to perform the action in the manner described above.

[0082] Continue as Figure 3 As shown, the signal monitoring device may further include a power supply module; the power supply module can be connected to all modules in the signal monitoring device to provide power to each module. The power supply voltage can be designed according to actual needs.

[0083] Optionally, the main control module is also used to send a control signal to the signal output module to cancel the alarm, so that the signal output module controls the padlock device to return to its initial state.

[0084] In some embodiments, when the alarm needs to be canceled after the fault is cleared, the main control module can send a control signal to the signal output module after receiving the control signal to cancel the alarm sent by the communication module, so that the signal output module outputs relevant signals to the padlock device to control the padlock device to return to the initial state, that is, to recover from the self-locking state and cancel the self-locking state. At this time, the circuit breaker device can be closed again.

[0085] Optionally, the input terminal of the signal detection module is also connected to the auxiliary contact; the signal detection module is also used to transmit the collected status signals of the moving and stationary contacts to the main control module when triggered by the auxiliary contact; the main control module is also used to send the status signals of the moving and stationary contacts to external devices through the communication module.

[0086] In one feasible approach, to more accurately determine the product's status and the cause of failure, existing technologies can be combined to add status monitoring at other locations using the same method, such as: auxiliary contact status, and alarm status of the actuator. Auxiliary contacts primarily detect whether the moving and stationary contacts separate and whether the product is disconnected; the actuator is mainly the unit that executes the mechanism when the product trips.

[0087] Optionally, the input of the signal detection module can also be connected to an auxiliary contact. When the moving and stationary contacts of the product separate, the auxiliary contact can push a push rod, which in turn triggers the micro switch to close. The signal detection module then transmits the collected status signals of the moving and stationary contacts. These status signals can include the opening and closing signals of the moving and stationary contacts. Under the triggering of the auxiliary contact, the opening and closing signals of the moving and stationary contacts collected by the signal detection module can be: the moving and stationary contacts are open.

[0088] If the moving and stationary contacts are in the closed state, the auxiliary contacts will not push the push rod, thus the signal detection module will not work.

[0089] Optionally, the input terminal of the signal detection module is also connected to the motion mechanism; the signal detection module is also used to transmit the collected status signal of the motion mechanism to the main control module when the motion mechanism moves; the main control module is also used to send the status signal of the motion mechanism to external devices through the communication module.

[0090] When the input terminal of the signal detection module is also connected to the action mechanism, as long as the action mechanism moves, it will push the push rod, which will trigger the micro switch to close. The signal acquisition module collects the status signal of the action mechanism and sends it to the main control module, which then sends the status signal of the action mechanism to the external device through the communication module.

[0091] The status signals of the actuator can include: alarm signals of the actuator. Whenever the actuator performs an action (similar to a tripping action), it will trigger the signal detection module to send the collected alarm signals of the actuator to the main control module.

[0092] If the actuating mechanism does not perform its action, the push rod and micro switch will not be triggered, and the signal detection module will not be able to collect the alarm signal from the actuating mechanism.

[0093] However, it is worth noting that the action of the actuator is not necessarily caused by a product malfunction. It may also be caused by manual testing. During manual testing, the actuator will receive a trigger command and will also perform the action. A small current overload fault will also trigger the actuator to perform the action. A large current short circuit fault will also trigger the actuator to perform the action. However, under a large current short circuit fault, the thermomagnetic mechanism will also operate to trigger the generation of a magnetic alarm signal.

[0094] Optionally, based on the presence of auxiliary contacts and actuating mechanisms, the signal indication module may further include: signal indicator lights corresponding to the auxiliary contacts and signal indicator lights corresponding to the actuating mechanisms. Thus, when the main control module receives a magnetic alarm signal, it controls the signal indicator light corresponding to the thermomagnetic mechanism to illuminate; when the main control module receives a tripping signal from the moving and stationary contacts, it controls the signal indicator light corresponding to the auxiliary contacts to illuminate; and when the main control module receives an alarm signal from the actuating mechanism, it controls the signal indicator light corresponding to the actuating mechanism to illuminate. This allows users to more clearly distinguish the current equipment status information.

[0095] In summary, the signal monitoring device provided in this embodiment includes: a signal detection module, a main control module, a communication module, and a signal indication module. The input terminal of the signal detection module is connected to the thermomagnetic mechanism of the circuit breaker, and the output terminal of the signal detection module is connected to the main control module. The main control module is also connected to the communication module and the signal indication module. The signal detection module transmits a magnetic alarm signal to the main control module when triggered by the thermomagnetic mechanism. The main control module controls the signal display of the signal indication module according to the magnetic alarm signal, and sends a target signal to an external device through the communication module according to the magnetic alarm signal. The main control module also determines the fault analysis result of the circuit breaker based on the magnetic alarm signal and auxiliary signals, and sends the fault analysis result to an external device through the communication module. The auxiliary signals include: the opening and closing signals of the moving and stationary contacts and the alarm signal of the operating mechanism. By connecting the signal detection module to the thermomagnetic mechanism, the acquisition and transmission of the magnetic alarm signal can be realized, overcoming the problem of difficult magnetic alarm signal detection in the prior art. The main control module enables remote transmission of magnetic alarm signals, thus facilitating remote monitoring of the circuit breaker equipment. Furthermore, the main control module controls the signal indicator module to display the alarm signals, enabling local monitoring of the circuit breaker equipment. Additionally, the main control module combines magnetic alarm signals and auxiliary signals to perform fault analysis, providing accurate results and, to some extent, identifying the specific type of fault, thus facilitating subsequent maintenance. The fault analysis results can also be sent to external devices via the communication module, enabling remote fault monitoring.

[0096] The steps of the fault analysis method implemented using the above-mentioned device will be explained below.

[0097] Figure 4 This is a flowchart illustrating a fault analysis method provided in an embodiment of this application. The executing entity of this method can be the main control module in the aforementioned signal monitoring device, such as... Figure 4 As shown, the method may include:

[0098] S101. Collect the status signals of the circuit breaker equipment. The status signals include: magnetic alarm signals of the thermal-magnetic mechanism, opening and closing signals of the moving and stationary contacts, and alarm signals of the operating mechanism.

[0099] Referring to the above embodiments, the main control module can collect the status signals of the circuit breaker equipment, wherein the status signals may include: magnetic alarm signals of the thermomagnetic mechanism, opening and closing signals of the moving and stationary contacts, and alarm signals of the actuating mechanism.

[0100] When the thermomagnetic mechanism is activated, the magnetic alarm signal of the thermomagnetic mechanism can be collected; when the moving and stationary contacts are activated, the opening signal of the moving and stationary contacts can be collected; when the actuating mechanism is activated, the alarm signal of the actuating mechanism can be collected.

[0101] Conversely, if the thermomagnetic mechanism does not operate, no magnetic alarm signal will be collected; if the moving and stationary contacts do not operate, the moving and stationary contacts will output a closing signal; if the operating mechanism does not operate, no alarm signal from the operating mechanism will be collected.

[0102] S102. Determine the product's fault analysis results based on each status signal.

[0103] Optionally, the fault analysis results of the product can be determined based on the user-preset state change sequence and each state signal. The state change sequence is used to indicate the fault type corresponding to each state signal under different state results.

[0104] S103. Send the fault analysis results to external devices via the communication module.

[0105] Optionally, the main control module can send the determined fault analysis results to external devices through the communication module to enable remote fault monitoring of the product.

[0106] In summary, the fault analysis method provided in this embodiment includes: collecting status signals of the circuit breaker equipment, including: magnetic alarm signals of the thermomagnetic mechanism, opening and closing signals of the moving and stationary contacts, and alarm signals of the operating mechanism; determining the fault analysis results of the product based on each status signal; and sending the fault analysis results to an external device via a communication module. By combining the magnetic alarm signal with auxiliary signals such as the opening and closing signals of the moving and stationary contacts and the alarm signals of the operating mechanism for product fault analysis, the accuracy of the fault analysis results can be improved, and the type of fault can be determined, thereby facilitating product maintenance.

[0107] Optionally, in step S102, determining the product's fault analysis result based on each status signal may include: if the thermomagnetic mechanism outputs a magnetic alarm signal, the actuating mechanism outputs an alarm signal, and the moving and stationary contacts output a tripping signal, then the fault analysis result is determined to be a short-circuit fault in the product.

[0108] Scenario 1: When the thermomagnetic mechanism outputs a magnetic alarm signal (the corresponding indicator light for the thermomagnetic mechanism illuminates), the actuating mechanism outputs an alarm signal, and the moving and stationary contacts output a tripping signal, a short-circuit fault can be confirmed. This is because when a short-circuit fault is detected, the thermomagnetic mechanism will activate, triggering the signal detection module to collect the magnetic alarm signal. Simultaneously, the actuating mechanism will also activate, generating an alarm signal. Upon activation, the moving and stationary contacts will trip, thus outputting a tripping signal.

[0109] Optionally, in step S102, determining the product's fault analysis result based on each status signal further includes: if the thermomagnetic mechanism does not output a magnetic alarm signal, the actuating mechanism outputs an alarm signal, and the moving and stationary contacts output a tripping signal, then the fault analysis result is determined to be that the product has experienced a manual test trip or overload fault.

[0110] Scenario 2: If the thermomagnetic mechanism does not output a magnetic alarm signal (the corresponding indicator light for the thermomagnetic mechanism is off), the actuating mechanism outputs an alarm signal, and the moving and stationary contacts output a tripping signal, then the fault analysis result is determined to be a manual tripping or overload fault. Since no magnetic alarm signal is output, high-current faults such as short circuits can be ruled out. However, during a low-current overload fault or a manual tripping of the product, the actuating mechanism will still operate, thus outputting an alarm signal, and triggering the moving and stationary contacts to output a tripping signal.

[0111] Optionally, in step S102, determining the product's fault analysis results based on each status signal further includes:

[0112] Scenario 3: If the thermomagnetic mechanism does not output a magnetic alarm signal, the actuating mechanism outputs an alarm signal, and the moving and stationary contacts output a closing signal, then the fault analysis result is determined to be a manual test trip or overload fault of the product, and the moving and stationary contacts are welded together.

[0113] Scenario 3 is similar to Scenario 2. Short circuit faults can be ruled out. When the product is manually tripped or overloaded, the moving and stationary contacts should normally output a tripping signal. However, if the moving and stationary contacts output a closing signal, it can be determined that the moving and stationary contacts have been welded together and cannot trip normally.

[0114] Optionally, in step S102, determining the product's fault analysis results based on each status signal further includes:

[0115] Scenario 4: If the thermomagnetic mechanism outputs a magnetic alarm signal, the actuating mechanism outputs an alarm signal, and the moving and stationary contacts output a closing signal, then it is determined that the product has experienced a short circuit fault and the moving and stationary contacts have been welded together.

[0116] In this scenario, normally the moving and stationary contacts should output a tripping signal, but if they output a closing signal instead, it can be determined that the moving and stationary contacts have been welded together.

[0117] Scenario 5: If the thermomagnetic mechanism does not output a magnetic alarm signal, the actuating mechanism does not output an alarm signal, and the moving and stationary contacts output a closing signal, then the product is considered to be without fault and the product is operating normally.

[0118] In summary, the fault analysis method provided in this embodiment includes: collecting status signals of the circuit breaker equipment, including magnetic alarm signals of the thermomagnetic mechanism, opening and closing signals of the moving and stationary contacts, and alarm signals of the operating mechanism; determining the fault analysis results of the product based on each status signal; and sending the fault analysis results to an external device via a communication module. By combining the magnetic alarm signal with auxiliary signals such as the opening and closing signals of the moving and stationary contacts and the alarm signals of the operating mechanism for product fault analysis, the product's status detection becomes more comprehensive and specific, thereby improving the accuracy of the fault analysis results and determining the type of fault, thus facilitating product maintenance.

[0119] Figure 5 This is a schematic diagram of the structure of a main control module provided in an embodiment of this application. The main control module may include: a processor 801 and a storage medium 802.

[0120] Storage medium 802 is used to store programs, and processor 801 calls the programs stored in storage medium 802 to execute the above method embodiments. The specific implementation and technical effects are similar, and will not be described in detail here.

[0121] The storage medium 802 stores program code, which, when executed by the processor 801, causes the processor 801 to perform various steps in the fault analysis method according to various exemplary embodiments of this application described in the "Exemplary Methods" section above.

[0122] The processor 801 can be a general-purpose processor, such as a central processing unit (CPU), digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, capable of implementing or executing the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly manifested as being executed by a hardware processor, or executed by a combination of hardware and software modules within the processor.

[0123] Storage medium 802, as a non-volatile computer-readable storage medium, can be used to store non-volatile software programs, non-volatile computer-executable programs, and modules. The storage medium can include at least one type of storage medium, such as flash memory, hard disk, multimedia card, card-type storage medium, random access memory (RAM), static random access memory (SRAM), programmable read-only memory (PROM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), magnetic storage medium, magnetic disk, optical disk, etc. The storage medium is any other medium capable of carrying or storing desired program code in the form of instructions or data structures that can be accessed by a computer, but is not limited thereto. In the embodiments of this application, storage medium 802 can also be a circuit or any other device capable of implementing storage functions for storing program instructions and / or data.

[0124] Optionally, this application also provides a program product, such as a computer-readable storage medium, including a program that, when executed by a processor, performs the above-described method embodiments.

[0125] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0126] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0127] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or in a combination of hardware and software functional units.

[0128] The integrated units implemented as software functional units described above can be stored in a computer-readable storage medium. These software functional units, stored in a storage medium, include several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute some steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

Claims

1. A signal monitoring device, characterized by The signal detection module, the main control module, the communication module, and the signal indication module are included. The input end of the signal detection module is connected with the thermal magnetic mechanism of the circuit breaker device, and the output end of the signal detection module is connected with the main control module. The main control module is further connected with the communication module and the signal indication module respectively. The signal detection module is used for transmitting a magnetic alarm signal to the main control module under the triggering of the thermal magnetic mechanism. The main control module is used for controlling the signal display of the signal indication module according to the magnetic alarm signal, and sending a target signal to an external device through the communication module according to the magnetic alarm signal. The main control module is further used for determining a fault analysis result of the product according to the magnetic alarm signal and an auxiliary signal, and sending the fault analysis result to the external device through the communication module, wherein the auxiliary signal includes a split and close signal of the moving and static contacts and an alarm signal of the action mechanism. The signal detection module includes a top rod and a micro switch.

2. The signal monitoring apparatus of claim 1, wherein The signal detection module is specifically used for transmitting the collected magnetic alarm signal to the main control module when the thermal magnetic mechanism pushes the top rod and the top rod triggers the micro switch to close.

3. The signal monitoring device according to claim 1, wherein The main control module is further used for receiving a control signal for canceling the alarm sent by the communication module, and controlling the signal indication module to cancel the signal display according to the control signal for canceling the alarm. The device further includes a signal output module.

4. The signal monitoring apparatus of claim 1, wherein One end of the signal output module is connected with the main control module, and the other end of the signal output module is used for connecting an external device; the external device includes a padlock device. The signal output module is used for outputting a control signal to control the padlock device to be self-locked when receiving the magnetic alarm signal sent by the main control module.

5. The signal monitoring device according to claim 4, wherein The main control module is further used for sending a control signal for canceling the alarm to the signal output module, so that the signal output module controls the padlock device to return to the initial state. The input end of the signal detection module is further connected with an auxiliary contact; 6. The signal monitoring apparatus of claim 1, wherein The signal detection module is further used for transmitting the collected state signal of the moving and static contacts to the main control module under the triggering of the auxiliary contact; The main control module is further used for sending the state signal of the moving and static contacts to the external device through the communication module. The input end of the signal detection module is further connected with an action mechanism; 7. The signal monitoring apparatus of claim 1, wherein The signal detection module is further used for transmitting the collected state signal of the action mechanism to the main control module when the action mechanism is in action; The main control module is further used for sending the state signal of the action mechanism to the external device through the communication module. The method applied to the main control module of the signal monitoring device in any one of claims 1-7, the method comprising:

8. A method of failure analysis, characterized by, Collecting state signals of the circuit breaker device, wherein the state signals include a magnetic alarm signal of the thermal magnetic mechanism, a split and close signal of the moving and static contacts, and an alarm signal of the action mechanism; Determining a fault analysis result of the product according to the state signals; and ​ The fault analysis result is sent to the external device through the communication module.

9. The failure analysis method according to claim 8, characterized by, The fault analysis result of the product is determined according to the state signals, and the determination includes: If the thermal magnetic mechanism outputs a magnetic alarm signal, the operating mechanism outputs an alarm signal, and the moving static contact outputs an open signal, it is determined that the fault analysis result is that the product has a short circuit fault.

10. The failure analysis method according to claim 8, characterized by, The fault analysis result of the product is determined according to the state signals, and the determination includes: If the thermal magnetic mechanism does not output a magnetic alarm signal, the operating mechanism outputs an alarm signal, and the moving static contact outputs an open signal, it is determined that the fault analysis result is that the product has a manual tripping or overload fault.

Images