Fuse with alarm function

Abstract

The invention relates to the technical field of circuit protection devices, and discloses a fuse with an alarm function, which comprises a bottom shell, a base is arranged in the bottom shell, a card is arranged on the upper surface of the base, a fuse body is arranged on the outer wall of the card, a fuse body is arranged in the fuse body, and an alarm device is arranged in the fuse body. The outer wall of the fuse body is fixedly connected with a first insulating spacer, the outer wall of the first insulating spacer is fixedly connected with an insulating rod, the outer wall of the insulating rod is slidably connected with a second insulating spacer, the outer wall of the insulating rod is provided with a tension spring, and the outer wall of the fuse body is provided with an alarm module. Through a pure mechanical linkage mode that the insulating rod is released after the fuse body of the fuse is fused and the tension spring is used for driving the insulating rod to accurately trigger the microswitch, direct and reliable detection of a fusing event is realized, the problem of possible misoperation of an electronic sensor in a strong electromagnetic interference environment is avoided, and absolute reliability of an alarm function is ensured.

Description

Technical Field

[0001] This invention relates to the field of circuit protection device technology, specifically to a fuse with alarm function. Background Technology

[0002] To meet the needs of overcurrent protection and fault early warning in circuit systems, fuses are widely used as core protection components. They disconnect the circuit by melting the fusible element when there is an overcurrent, thus preventing equipment damage or safety accidents. However, in complex scenarios such as industrial control and power transmission, if a fuse blows and cannot be detected and warned in time, the scope of the fault can easily expand, affecting the overall operating efficiency of the system and even causing secondary safety risks. Therefore, fuses with alarm functions have become a key requirement for ensuring safe operation and maintenance of circuits. They can quickly provide fault information when a fuse blows, making it easier for staff to troubleshoot and handle the problem in a timely manner.

[0003] Existing fuses with alarm functions mostly rely on electronic sensors to detect fuse failure and trigger alarms. Such solutions require external power to maintain sensor operation. Once the power supply is interrupted, the alarm function will fail. Moreover, in industrial environments with strong electromagnetic interference, electronic sensors are easily affected by electromagnetic signals, resulting in malfunctions or detection failures. They cannot accurately and reliably capture fuse failure events, leading to delayed fault warnings or false alarms, which affects the safe and stable operation of the circuit system. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a fuse with an alarm function, which solves the problems of high false alarm rate and insufficient reliability of electronic sensor-type fuse alarms in strong electromagnetic interference environments due to the need for external power supply and poor anti-interference ability.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A fuse with an alarm function includes a base shell, a base disposed inside the base shell, a card disposed on the upper surface of the base, a fuse body disposed on the outer wall of the card, a fusible element disposed inside the fuse body, a first insulating gasket fixedly connected to the outer wall of the fuse body, an insulating rod fixedly connected to the outer wall of the first insulating gasket, a second insulating gasket slidably connected to the outer wall of the insulating rod, a tension spring disposed on the outer wall of the insulating rod, an alarm module disposed on the outer wall of the fuse body, a micro switch disposed inside the alarm module, and a limit component disposed on the outer wall of the base.

[0006] By adopting the above technical solution, the mechanical energy released when the fuse melts is used as the driving source. After the fusible element melts, its original restraining force on the insulating rod disappears, and the pre-tensioned spring contracts and releases elastic potential energy, precisely driving the insulating rod to move along the guide mechanism and triggering the micro switch. This purely mechanical linkage detection method requires no external power supply, and its triggering energy comes entirely from the melting event itself. This not only fundamentally eliminates the influence of strong electromagnetic interference on electronic sensing elements, but also ensures the absolute reliability and anti-interference capability of the alarm triggering action through a simple and reliable mechanical structure.

[0007] Preferably, the limiting component includes a support block, a limiting cylinder is fixedly connected inside the support block, a locking block is slidably connected to the inner wall of the limiting cylinder, and a spring is provided inside the limiting cylinder.

[0008] Preferably, the outer wall of the support block is fixedly connected to the outer wall of the base, and the outer wall of the card block is in contact with the outer wall of the card.

[0009] Preferably, one end of the spring is fixedly connected to the outer wall of the locking block, and the other end abuts against the inner wall of the limiting cylinder.

[0010] Preferably, the limiting component includes a pad, the outer wall of which is fixedly connected to the outer wall of the base, and the outer wall of the pad is provided with a retaining ring, the outer wall of which abuts against the outer wall of the card.

[0011] Preferably, the outer wall of the second insulating pad is fixedly connected to the inner wall of the fuse body, the outer wall of the insulating rod is slidably connected to the inside of the fuse body, one end of the tension spring is fixedly connected to the outer wall of the first insulating pad, and the other end is fixedly connected to the outer wall of the second insulating pad.

[0012] Preferably, the alarm module includes: The status signal acquisition module is used to acquire the on / off status signals of the micro switch, and to perform signal conditioning and analog-to-digital conversion on the acquired status signals to obtain a status signal sequence. The central processing module, connected to the status signal acquisition module, is used to analyze the status signal sequence and determine whether the fuse has blown. The wireless transmission module, connected to the central processing module, is used to send an alarm message containing the fuse device identification code and fault timestamp after receiving an alarm trigger command from the central processing module. The remote monitoring module connects to the wireless transmission module and is used to receive and parse alarm messages from the wireless transmission module, generate alarm information, and record and store the fault event.

[0013] Preferably, the central processing module includes: The signal analysis unit is used to receive state signal sequences and perform digital filtering processing. The anti-shake determination unit is connected to the signal analysis unit and is used to perform duration analysis on the filtered signal. The instruction generation unit, connected to the debouncing determination unit, is used to generate an alarm trigger instruction when a valid fuse-breaking event is confirmed.

[0014] Preferably, the wireless transmission module includes: The message assembly unit is used to receive alarm trigger commands and organize and generate alarm messages containing device identification codes and timestamps; The protocol encapsulation unit and the connection message assembly unit are used to add communication protocol headers to alarm messages; The wireless transmission unit and the connection protocol encapsulation unit are used to wirelessly transmit the encapsulated alarm messages to the remote monitoring module.

[0015] Preferably, the remote monitoring module includes: The message receiving unit is used to receive alarm messages and perform verification. The parsing and processing unit, connected to the message receiving unit, is used to extract the device identification code and fault timestamp information from the message. The alarm recording unit, connected to the parsing and processing unit, is used to store the parsed alarm information into the database and generate corresponding alarm prompts.

[0016] Working principle: During normal operation, the current flows through the fusible element inside the fuse body. The fusible element, with its mechanical strength, pulls the insulating rod through the first insulating pad, so that the insulating rod overcomes the tension of the spring and remains stationary. At this time, the entire mechanical linkage mechanism is in a balanced state.

[0017] When an overload or short-circuit fault occurs in the circuit, the temperature of the fuse rises sharply until it melts, and its restraining force on the insulating rod disappears. The tension spring immediately contracts, releasing its elastic potential energy, driving the insulating rod to slide rapidly in a straight line along the guide hole of the second insulating pad. Under the combined limiting guidance of the fuse body shell and the second insulating pad, the end of the insulating rod precisely strikes and presses down the contact of the micro switch.

[0018] The state changes of the microswitch are monitored in real time by the state signal acquisition module. This module filters, debouncing, and performs level conversion on the original switch signal, converting the mechanical contact signal into a stable digital signal. The central processing module scans and analyzes the digital signal in real time, eliminates high-frequency interference through a digital filtering algorithm, and then the debouncing judgment unit confirms the persistence and validity of the signal change. Only when the signal state is stable for more than a preset time threshold is it determined to be a valid fuse-breaking event.

[0019] Once a valid event is confirmed, the command generation unit immediately organizes the device identification code and precise timestamp to generate an alarm trigger command. After receiving the command, the wireless transmission module assembles the alarm information into a data frame conforming to the communication protocol, adds the necessary protocol header and verification information, and finally wirelessly transmits the alarm message to the remote monitoring center through the radio frequency unit.

[0020] After receiving the message, the remote monitoring module first performs data verification and parsing, extracting key information such as the device identification code and fault timestamp. Then, it automatically generates an alarm work order containing detailed information about the fault location and stores it in the system database. At the same time, it sends real-time alarm prompts to maintenance personnel through the human-machine interface, thus completing the entire process from the occurrence of an on-site circuit breaker event to remote alarm notification.

[0021] This invention provides a fuse with an alarm function. It has the following advantages: 1. This invention achieves direct and reliable detection of fuse-induced failure events through a purely mechanical linkage method that releases the insulating rod after the fuse element melts, and uses the energy stored in the tension spring to drive the insulating rod to precisely trigger the micro switch. This process does not require external power supply, and its triggering energy comes entirely from the fuse-induced failure event itself, avoiding the problem of malfunctions that may occur in electronic sensors under strong electromagnetic interference environments, and ensuring the absolute reliability of the alarm function.

[0022] 2. The present invention, through the structural design of the limiting component and the elastic card, allows for simple insertion when installing the fuse, and the mechanical structure automatically completes the clamping and circuit connection. This design provides continuous and stable contact pressure to the electrode contact surface through springs or elastic retaining rings, effectively ensuring the reliability of the electrical connection, while greatly simplifying the installation and replacement process and reducing the difficulty of operation and time cost.

[0023] 3. This invention constructs a complete automated alarm system from signal acquisition and intelligent judgment to remote reporting, realizing accurate perception and efficient management of fuse failures. The system adopts localized signal processing and algorithm judgment to effectively filter out interference and accurately identify the real fault. Then, it automatically reports the accurately located fault information to the remote platform through a wireless network, generating an alarm work order that can be used immediately. This achieves rapid remote notification and accurate location of faults, greatly improving the efficiency of operation and maintenance response. Attached Figure Description

[0024] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the melt of the present invention; Figure 3 This is a schematic plan view of the fuse body of the present invention; Figure 4 This is a schematic diagram of the card used in this invention; Figure 5 This is a schematic diagram of the support block of the present invention; Figure 6 This is a schematic diagram of the spring of the present invention; Figure 7 This is a schematic diagram of the retaining ring of the present invention; Figure 8 This is a schematic diagram of the alarm process of a fuse with alarm function according to the present invention; Figure 9 This is a schematic diagram of the central processing module of the present invention; Figure 10 This is a schematic diagram of the wireless transmission module of the present invention; Figure 11 This is a schematic diagram of the remote monitoring module of the present invention.

[0025] The components are as follows: 1. bottom shell; 2. base; 3. card; 4. fuse body; 5. fusible element; 6. first insulating gasket; 7. insulating rod; 8. tension spring; 9. second insulating gasket; 10. alarm module; 11. micro switch; 12. support block; 13. limit cylinder; 14. locking block; 15. spring; 16. retaining ring; 17. pad block. Detailed Implementation

[0026] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see the appendix Figure 1 - Appendix Figure 5 This invention provides a fuse with an alarm function, including a base shell 1, a base 2 inside the base shell 1, a card 3 on the upper surface of the base 2, a fuse body 4 on the outer wall of the card 3, a fusible element 5 inside the fuse body 4, a first insulating pad 6 fixedly connected to the outer wall of the fuse body 4, an insulating rod 7 fixedly connected to the outer wall of the first insulating pad 6, a second insulating pad 9 slidably connected to the outer wall of the insulating rod 7, a tension spring 8 on the outer wall of the insulating rod 7, an alarm module 10 on the outer wall of the fuse body 4, a micro switch 11 inside the alarm module 10, and a limit component on the outer wall of the base 2.

[0028] Specifically, the base shell 1 serves as the main supporting structure, with internal slots and positioning posts for limiting and fixing the base 2, providing a stable mounting foundation for the entire mechanism. The base 2 supports and fixes the card 3, which in turn provides a mounting foundation for the fuse body 4, clamping and electrically connecting it. Fixing and connecting the fuse body 4 is achieved simply by inserting both ends of the fuse body 4 into the cards 3 on either side. During normal operation, the fuse element 5, through its own mechanical strength, restrains and fixes one end of the insulating rod 7 via the first insulating pad 6, keeping it stationary against the tension of the spring 8. The first insulating pad 6 connects the fuse element 5 and the insulating rod 7. When an overload or short-circuit fault occurs, the temperature of the fuse element 5 rises sharply until it melts, and its restraining force on the insulating rod 7 disappears. The spring 8 immediately contracts, releasing elastic potential energy and driving the insulating rod 7 to slide rapidly and linearly along the guide hole of the second insulating pad 9. Under the combined limiting and guiding of the fuse body 4 and the second insulating pad 9, the end of the insulating rod 7 can accurately strike and press down the contact of the micro switch 11, thereby triggering the alarm function of the alarm module 10. The fuse body 4 serves to support and fix the alarm module 10, and the micro switch 11 is located inside the alarm module 10. The alarm module 10 serves to support, limit, and protect the micro switch 11, thereby preventing the micro switch 11 from being accidentally touched.

[0029] Please see the appendix Figure 4 - Appendix Figure 6 The limiting component includes a support block 12, a limiting cylinder 13 is fixedly connected inside the support block 12, a locking block 14 is slidably connected to the inner wall of the limiting cylinder 13, and a spring 15 is provided inside the limiting cylinder 13; the outer wall of the support block 12 is fixedly connected to the outer wall of the base 2, and the outer wall of the locking block 14 is in contact with the outer wall of the card 3; one end of the spring 15 is fixedly connected to the outer wall of the locking block 14, and the other end abuts against the inner wall of the limiting cylinder 13.

[0030] Specifically, the main function of this limiting component is to provide reverse support force for the elastic card 3, ensuring sufficient and stable contact pressure between it and the electrodes of the fuse body 4, so as to ensure excellent conductivity and prevent overheating. When the fuse body 4 is installed, the fuse body 4 slides in the card 3 and simultaneously squeezes the card 3 to expand to both sides. At this time, the card 3 will squeeze the locking block 14 to slide in the limiting cylinder 13, which will in turn squeeze the spring 15 to retract. The limiting cylinder 13 supports the limiting locking block 14 and provides a guide for the locking block 14, so that the locking block 14 can be placed in the limiting cylinder. The 13-axis sliding mechanism features a step at the connection between the limiting cylinder 13 and the locking block 14, allowing the limiting cylinder 13 to engage and limit the locking block 14, preventing it from popping out. The base 2 supports and fixes the support block 12, ensuring its stability. The support block 12, in turn, supports the limiting cylinder 13, ensuring its stability during operation. Through the precise cooperation between the limiting cylinder 13 and the locking block 14, the spring 15 is completely confined to its designed axis, preventing lateral bending and instability, and ensuring long-term reliable and consistent clamping force.

[0031] Please see the appendix Figure 7 The limiting component includes a pad 17, the outer wall of which is fixedly connected to the outer wall of the base 2, and a retaining ring 16 is provided on the outer wall of the pad 17, the outer wall of which abuts against the outer wall of the card 3.

[0032] Specifically, this is another implementation of the limiting component, which also aims to provide elastic support for the card 3 to obtain stable electrical contact. The retaining ring 16 is composed of an elastic metal ring with an opening, wherein the pad 17 is made of engineering plastic or rubber, and its modulus is lower than that of the metal retaining ring 16. It mainly plays a supporting and buffering role. During installation, the expanded card 3 squeezes the retaining ring 16, causing it to undergo elastic deformation as a whole rather than local yielding. The elastic deformation of the pad 17 assists the retaining ring 16 in absorbing displacement, and on the other hand, makes the force distribution more uniform, avoiding stress concentration that could lead to fatigue fracture of the retaining ring 16, thus improving its service life. This solution has a simpler and more compact structure and is suitable for scenarios with higher requirements for installation space.

[0033] Please see the appendix Figure 1 - Appendix Figure 6 The outer wall of the second insulating pad 9 is fixedly connected to the inner wall of the fuse body 4, the outer wall of the insulating rod 7 is slidably connected to the inside of the fuse body 4, one end of the tension spring 8 is fixedly connected to the outer wall of the first insulating pad 6, and the other end is fixedly connected to the outer wall of the second insulating pad 9.

[0034] Specifically, the fuse body 4 serves to support and fix the second insulating pad 9, the second insulating pad 9 serves to limit the insulating rod 7, and the first insulating pad 6, the insulating rod 7, and the second insulating pad 9 together serve to limit the tension spring 8.

[0035] Please see the appendix Figure 1 - Appendix Figure 11 The alarm module 10 includes: The status signal acquisition module is used to acquire the on / off status signal of the micro switch 11, and to perform signal conditioning and analog-to-digital conversion on the acquired status signal to obtain a status signal sequence; The central processing module, connected to the status signal acquisition module, is used to analyze the status signal sequence and determine whether the fuse has blown. The wireless transmission module, connected to the central processing module, is used to send an alarm message containing the fuse device identification code and fault timestamp after receiving an alarm trigger command from the central processing module. The remote monitoring module connects to the wireless transmission module and is used to receive and parse alarm messages from the wireless transmission module, generate alarm information, and record and store the fault event.

[0036] Specifically, the mechanical on / off signal of the microswitch is filtered, debouncing, and level-converted by a status signal acquisition module. This module typically includes an RC low-pass filter circuit to remove high-frequency glitches, a Schmitt trigger for level shaping to eliminate hysteresis, and finally, an optocoupler or level conversion chip to electrically isolate any potential high-voltage loop signals from the low-voltage control loop signals, converting unstable contact signals into stable digital level signals, thus standardizing and digitizing the signals and providing accurate judgment criteria for the central processing module. The central processing module scans the digitized status signal in real time. Its built-in firmware reads the I / O port status at a fixed sampling period and stores it in a first-in-first-out buffer queue, capturing the transition edges of the switch state. It then uses a preset debouncing algorithm and delay criteria to confirm the validity of the state change. The debouncing algorithm can be based on majority voting or duration judgment using this buffer queue; for example, if five consecutive sampling points show a new state, it is considered a valid transition. It plays a role in intelligent logic judgment, thereby effectively preventing false alarms caused by vibration or momentary poor contact, and accurately identifying the real fuse failure event. Through the wireless transmission module, the trigger command issued by the central processing module, the device's unique ID code (usually pre-burned into the microcontroller's FLASH memory or a dedicated ID chip), and the precise timestamp generated by the real-time clock are packaged into a data frame conforming to the wireless communication protocol. This data frame is then modulated and transmitted by the radio frequency unit, enabling remote transmission of fault information. This allows on-site fault events to be encoded into structured data and seamlessly uploaded to the remote monitoring center. The remote monitoring module performs protocol parsing on the received data frames, extracts key information and stores it in the database. At the same time, it automatically generates an alarm work order containing the fault location, the location information obtained by querying the device identification code and installation location mapping table pre-configured in the system background, and the time of occurrence. This serves as information integration and event management, providing maintenance personnel with intuitive fault location information and complete historical event tracing support.

[0037] Please see the appendix Figure 9 The central processing module includes: The signal analysis unit is used to receive state signal sequences and perform digital filtering processing. The anti-shake determination unit is connected to the signal analysis unit and is used to perform duration analysis on the filtered signal. The instruction generation unit, connected to the debouncing determination unit, is used to generate an alarm trigger instruction when a valid fuse-breaking event is confirmed.

[0038] Specifically, the input state signal sequence is digitally filtered by a signal analysis unit. This processing is typically implemented using a first-order infinite impulse response digital low-pass filter, whose difference equation can be expressed as follows: ,in, represents the filtered output value at the current time n; x represents the original sampled input value at the current time n; This represents the filtered output value at the previous time n-1; α is the filter coefficient, with a range of 0 < α < 1, and its specific value is determined by the system sampling frequency and the target cutoff frequency, as shown in the following formula: , where f c f is the desired cutoff frequency. s The signal sampling frequency effectively filters out high-frequency noise caused by circuit noise or electromagnetic interference, thus purifying and stabilizing the signal and providing smooth and reliable data input for subsequent judgment units. The anti-jitter judgment unit continuously monitors the filtered signal level. When a signal state change is detected, an internal timer or counter is activated. Only when this state change persists for more than a preset anti-jitter time window T is it considered a valid event. The time window T is set based on the inherent jitter characteristics of the mechanical microswitch, typically determined experimentally, and is generally between 20ms and 100ms. This serves to distinguish between real faults and transient interference, fundamentally avoiding false alarms caused by mechanical contact jitter. After receiving the valid event confirmation signal from the anti-jitter judgment unit, the instruction generation unit immediately combines device identification information and real-time clock data to generate a standard-format alarm trigger instruction package. This instruction package can use a concise JSON or custom binary format, serving as a driving response and information encapsulation mechanism. This ensures that every confirmed fuse-breaking event is accurately transmitted to the wireless transmission module and reported to the remote system.

[0039] Please see the appendix Figure 10 The wireless transmission module includes: The message assembly unit is used to receive alarm trigger commands and organize and generate alarm messages containing device identification codes and timestamps; The protocol encapsulation unit and the connection message assembly unit are used to add communication protocol headers to alarm messages; The wireless transmission unit and the connection protocol encapsulation unit are used to wirelessly transmit the encapsulated alarm messages to the remote monitoring module.

[0040] Specifically, the message assembly unit receives alarm trigger commands from the central processing module, extracts the unique device identifier contained within, and uses a real-time clock chip to obtain the precise fault occurrence timestamp. These two types of key information are organized and arranged according to a predefined data format, serving as information integration and data standardization. This generates a complete and formatted alarm message to be sent, preparing the data for subsequent protocol encapsulation. The protocol encapsulation unit receives the original alarm message output from the message assembly unit and adds necessary protocol information such as frame headers, frame trailers, address fields, control commands, and checksums according to the target network's communication protocol specifications. A frame counter is used to prevent replay attacks, and the message integrity code is calculated from the key and message content using an encryption algorithm. This code is used by the receiver to verify whether the message has been tampered with during transmission, serving as data frame formatting and... The communication adapter encapsulates a simple data message into a complete transmission frame that conforms to the requirements of the operator's network or proprietary protocol, possessing error correction and addressing capabilities. This ensures that the message can be accurately identified and reliably transmitted in complex wireless environments. The wireless transmitting unit receives the complete data frame processed by the protocol encapsulation unit. Through its internal RF chip and power amplifier, the transmitting power can be dynamically adjusted before transmission based on the received signal strength indication or network instructions to achieve a balance between communication distance and power consumption. The digital signal is modulated onto a specific wireless frequency band and radiated out as electromagnetic waves through the antenna, playing the role of signal modulation and wireless transmission. Ultimately, the electronic data packet representing the fuse failure event is converted into a physical wireless signal, which is stably transmitted across spatial distances to the remote monitoring center or gateway device, completing the final information transmission from the field to the remote location.

[0041] Please see the appendix Figure 11 The remote monitoring module includes: The message receiving unit is used to receive alarm messages and perform verification. The parsing and processing unit, connected to the message receiving unit, is used to extract the device identification code and fault timestamp information from the message. The alarm recording unit, connected to the parsing and processing unit, is used to store the parsed alarm information into the database and generate corresponding alarm prompts.

[0042] Specifically, the message receiving unit continuously monitors the wireless network port, receiving alarm message data streams from numerous field fuse terminals. It performs cyclic redundancy check (CRC) or checksum verification on the received raw data packets, automatically discarding erroneous data packets that fail the check, thus serving as both data reception and preliminary verification. This ensures the integrity and correctness of data received by subsequent processing units during transmission, providing the first line of defense for system reliability. The parsing processing unit then unpacks the verified complete data packets, peeling away additional information such as protocol headers and addresses layer by layer according to predefined communication protocol rules, accurately extracting the device's unique identifier and precise fault timestamp from the data payload. The core information serves to extract and transform data, converting raw, difficult-to-read binary data streams into clear, structured fault event information that can be directly used by upper-layer application software. The alarm recording unit persistently stores the parsed structured data, including device identification codes, fault timestamps, and reception times, in a specific data table in the system database. Simultaneously, it calls the message generation interface to create a new alarm work order or a real-time pop-up notification, serving as an event archive and real-time early warning system. This enables long-term, traceable management of each alarm message and provides maintenance personnel with immediate and intuitive fault notifications, driving them to quickly perform troubleshooting and repair operations.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fuse with alarm function, comprising a base shell (1), characterized in that: The base (1) is provided with a base (2) inside. The upper surface of the base (2) is provided with a card (3). The outer wall of the card (3) is provided with a fuse body (4). The fuse body (4) is provided with a fusible element (5) inside. The outer wall of the fuse body (4) is fixedly connected with a first insulating pad (6). The outer wall of the first insulating pad (6) is fixedly connected with an insulating rod (7). The outer wall of the insulating rod (7) is slidably connected with a second insulating pad (9). The outer wall of the insulating rod (7) is provided with a tension spring (8). The outer wall of the fuse body (4) is provided with an alarm module (10). The alarm module (10) is provided with a micro switch (11) inside. The outer wall of the base (2) is provided with a limit component.

2. A fuse with alarm function according to claim 1, characterized in that: The limiting component includes a support block (12), a limiting cylinder (13) is fixedly connected inside the support block (12), a locking block (14) is slidably connected to the inner wall of the limiting cylinder (13), and a spring (15) is provided inside the limiting cylinder (13).

3. A fuse with alarm function according to claim 2, characterized in that: The outer wall of the support block (12) is fixedly connected to the outer wall of the base (2), and the outer wall of the card block (14) is in contact with the outer wall of the card (3).

4. A fuse with alarm function according to claim 2, characterized in that: One end of the spring (15) is fixedly connected to the outer wall of the locking block (14), and the other end abuts against the inner wall of the limiting cylinder (13).

5. A fuse with alarm function according to claim 1, characterized in that: The limiting component includes a pad (17), the outer wall of which is fixedly connected to the outer wall of the base (2), and the outer wall of the pad (17) is provided with a retaining ring (16), the outer wall of which abuts against the outer wall of the card (3).

6. A fuse with alarm function according to claim 1, characterized in that: The outer wall of the second insulating pad (9) is fixedly connected to the inner wall of the fuse body (4), the outer wall of the insulating rod (7) is slidably connected to the inside of the fuse body (4), one end of the tension spring (8) is fixedly connected to the outer wall of the first insulating pad (6), and the other end is fixedly connected to the outer wall of the second insulating pad (9).

7. A fuse with alarm function according to claim 1, characterized in that: The alarm module (10) includes: The status signal acquisition module is used to acquire the on / off status signal of the micro switch (11), and to perform signal conditioning and analog-to-digital conversion on the acquired status signal to obtain a status signal sequence; The central processing module, connected to the status signal acquisition module, is used to analyze the status signal sequence and determine whether the fuse has blown. The wireless transmission module, connected to the central processing module, is used to send an alarm message containing the fuse device identification code and fault timestamp after receiving an alarm trigger command from the central processing module. The remote monitoring module connects to the wireless transmission module and is used to receive and parse alarm messages from the wireless transmission module, generate alarm information, and record and store the fault event.

8. A fuse with alarm function according to claim 7, characterized in that: The central processing module includes: The signal analysis unit is used to receive state signal sequences and perform digital filtering processing. The anti-shake determination unit is connected to the signal analysis unit and is used to perform duration analysis on the filtered signal. The instruction generation unit, connected to the debouncing determination unit, is used to generate an alarm trigger instruction when a valid fuse-breaking event is confirmed.

9. A fuse with alarm function according to claim 7, characterized in that: The wireless transmission module includes: The message assembly unit is used to receive alarm trigger commands and organize and generate alarm messages containing device identification codes and timestamps; The protocol encapsulation unit and the connection message assembly unit are used to add communication protocol headers to alarm messages; The wireless transmission unit and the connection protocol encapsulation unit are used to wirelessly transmit the encapsulated alarm messages to the remote monitoring module.

10. A fuse with alarm function according to claim 7, characterized in that: The remote monitoring module includes: The message receiving unit is used to receive alarm messages and perform verification. The parsing and processing unit, connected to the message receiving unit, is used to extract the device identification code and fault timestamp information from the message. The alarm recording unit, connected to the parsing and processing unit, is used to store the parsed alarm information into the database and generate corresponding alarm prompts.

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