A safety control device for safety test of electrical switch cabinet

Abstract

The application discloses a kind of for electrical switchgear safety test safety control device, it is related to electrical engineering technical field, including safety control main body, protective shell and connecting line, first connector and second connector, back seat, protective cover and adjusting assembly;The device is connected first connector, second connector and back seat on safety control main body, and adjusting assembly is connected on first connector and second connector, can be according to the need of use quickly to plug replacement, and according to the model of jack to the quick replacement of plug, avoids tedious operation steps, greatly improves the work efficiency of staff, prevents false touch by physical interlock and mechanical interlock double protection, simultaneously with local threshold self-adapting adjustment capability, can be associated environmental parameter correction threshold, effectively prevents false operation and fault risk, reduces false alarm rate, improves operation reliability and management efficiency.

Description

Technical Field

[0001] This invention relates to the field of electrical engineering technology, and more specifically to a safety control device for safety testing of electrical switchgear. Background Technology

[0002] Existing safety control devices for electrical switchgear safety testing still have the following drawbacks in actual use:

[0003] In the field of electrical switchgear safety testing, this safety control device is crucial. It aims to ensure the safety and accuracy of the testing process by employing a series of technical means to strictly control the test operations and related parameters. Equipped with multiple high-precision sensors, the device can monitor key parameters such as current, voltage, and temperature of the electrical switchgear in real time during testing. Through control circuits and software systems, it achieves precise control over the start, stop, and adjustment of the test equipment. When a parameter exceeds a safety threshold, the protection circuit is immediately activated to cut off the test power supply, preventing equipment damage and the risk of electric shock. Since there are many models of electrical switchgear, the different shapes, sizes, and forms of the interfaces require personnel to carry numerous plugs of various specifications to adapt to the switchgear. Furthermore, replacing plugs necessitates reconnecting the safety control device, making the operation complex and causing significant inconvenience in its use.

[0004] Meanwhile, in practical applications, when the device is still powered on, operators may misjudge and directly open the protective cover to operate it, leading to the risk of electric shock. Some devices rely solely on physical or electrical protection, and if a single link fails, it may still cause a safety accident. At the same time, frequent misjudgments and power outages may occur due to changes in the ambient temperature, affecting normal use. Therefore, there is an urgent need for a security system that can automatically adjust the threshold according to environmental information conditions, so as to ensure safety without affecting the normal use of the device. Summary of the Invention

[0005] The purpose of this invention is to provide a safety control device for safety testing of electrical switchgear, which solves the problem that there are many models of electrical switchgear, and when operators connect them for safety testing, due to the different shapes, sizes and forms of the interfaces, operators need to carry many types of plugs to adapt to the electrical switchgear. Moreover, when changing plugs, the safety control device needs to be reconnected, which is complicated and makes the operation quite inconvenient.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a safety control device for safety testing of electrical switchgear, comprising a safety control body, a protective shell and a connecting wire connected to the front side of the safety control body, a first connector and a second connector connected to the safety control body in the protective shell, a rear seat connected to the second connector, a protective cover connected to the front side of the protective shell, one end of the connecting wire passing through the protective shell and connecting to the rear seat, an adjustment component connected to the rear side of the first connector and the second connector, and connecting parts connected to the top and bottom of the rear seat.

[0007] Furthermore, the protective shell is fixedly connected to one side of the safety control body, and the safety control body on the side away from the protective shell has a round hole. The safety control body on the rear side of the protective shell has a rectangular hole and a locking block for connecting the first connector and the second connector.

[0008] Furthermore, a protective cover is connected to the front side of the protective shell, the protective cover is inserted into the protective shell and slides on the protective shell, and an arc-shaped groove is opened at the bottom of the protective shell for the connecting wire to pass through.

[0009] Furthermore, the first connector and the second connector are snapped onto the locking block on the front side of the safety control body on both sides. The top and bottom of the first connector and the second connector are provided with locking slots. Two adjustment components are connected to the rear side of the first connector, and three adjustment components are connected to the rear side of the second connector.

[0010] Furthermore, the top and bottom of the rear seat are rotatably connected with connecting components, the rear side of the rear seat abuts against the second connecting head, and one end of the connecting component is engaged in a slot opened in the second connecting head to connect the second connecting head and the rear seat.

[0011] Furthermore, the middle part of the connecting component is rotatably connected to the rear seat, one end of the connecting component connected to the second connecting head is hook-shaped, and a spring is connected to one end of the connecting component near the rear seat, and the spring is fixed between the rear seat and the connecting component.

[0012] Furthermore, the front side of the rear seat is fixedly connected to the connecting line, and the end of the connecting line away from the rear seat passes through the round hole on the front side of the safety control body and connects to the inside of the safety control body.

[0013] Furthermore, the first connector and the second connector have grooves on their rear sides, and the adjustment component is connected in the grooves. The adjustment component includes a connecting block, a pin, and an elastic block. The two sides of the connecting block are rotatably connected in the grooves opened in the first connector and the second connector.

[0014] Furthermore, the front side of the connecting block abuts against the elastic block, the elastic block is connected in the first connecting head and the second connecting head, a spring is sleeved on the elastic block, and the connecting block extends and retracts according to the movement of the elastic block.

[0015] Furthermore, the rear side and bottom of the connecting block are fixedly connected with pins, and the pins can be moved between the first connector and the second connector to adjust the plug type.

[0016] Compared with the prior art, the safety control device for safety testing of electrical switchgear provided by the present invention has the following beneficial effects:

[0017] This safety control device for electrical switchgear safety testing, by connecting a first connector, a second connector, and a back seat to the safety control body, and by connecting adjustment components to the first and second connectors, allows for quick replacement of the plug according to usage needs, as well as quick replacement of the pins according to the socket type. This avoids cumbersome operating steps and greatly improves the work efficiency of the staff. The rectangular slot and the connected protective shell on the safety control body can store and place the plug, providing protection and storage for the first and second connectors, greatly increasing the practicality of the device.

[0018] The physical interlock uses an electromagnetic lock to lock the protective cover when energized, and the slotted design ensures practicality while preventing accidental operation while energized. In the electrical interlock, the temperature sensor collects the temperature difference as the protective cover flips, the current sensor monitors key connectors and classifies them, and the processing module uses a sliding window to analyze and generate trends. When the limit is exceeded, the circuit breaker is triggered to cut off the power. It has the ability to adaptively adjust local thresholds and can be correlated with environmental parameters to correct thresholds, effectively eliminating the risk of misoperation and failure, reducing false alarm rate, and improving operation and maintenance reliability and management efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention from a first perspective;

[0021] Figure 2 This is a schematic diagram of the overall structure of the present invention from a second perspective;

[0022] Figure 3 This is a first-view exploded structural diagram of the present invention;

[0023] Figure 4This is a schematic diagram of the exploded structure from a second perspective of the present invention;

[0024] Figure 5 This is a partial structural diagram of the present invention;

[0025] Figure 6 This is a partial exploded structural diagram of the present invention;

[0026] Figure 7 This is an exploded view of the regulating component of the present invention;

[0027] Figure 8 This is an exploded structural diagram of the regulating component of the present invention.

[0028] Figure 9 This is a schematic diagram of the security system in this invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Safety control body; 2. Protective shell; 3. Protective cover; 4. Connecting wire; 5. First connector; 6. Second connector; 7. Rear seat; 8. Connecting parts; 9. Adjustment assembly; 901. Connecting block; 902. Pin; 903. Elastic block. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] Example 1

[0033] Please see Figure 1-8 The first embodiment of the present invention includes a safety control body 1, a protective shell 2 and a connecting line 4 connected to the front side of the safety control body 1, a first connector 5 and a second connector 6 connected to the safety control body 1 in the protective shell 2, a rear seat 7 connected to the second connector 6, a protective cover 3 connected to the front side of the protective shell 2, one end of the connecting line 4 passing through the protective shell 2 and connecting to the rear seat 7, an adjustment component 9 connected to the rear side of the first connector 5 and the second connector 6, and connecting parts 8 connected to the top and bottom of the rear seat 7.

[0034] Please see Figure 1-4The protective shell 2 is fixedly connected to one side of the safety control body 1. The safety control body 1 on the side away from the protective shell 2 has a round hole. The safety control body 1 on the rear side of the protective shell 2 has a rectangular hole and a locking block for connecting the first connector 5 and the second connector 6. When the first connector 5 and the second connector 6 are connected to the safety control body 1, the adjustment component 9 connected to the first connector 5 and the second connector 6 can be placed in the rectangular hole opened on the safety control body 1. The locking block can fix the first connector 5 and the second connector 6 and limit the first connector 5 and the second connector 6 to the safety control body 1. The protective shell 2 can protect the first connector 5 and the second connector 6.

[0035] A protective cover 3 is connected to the front of the protective shell 2. The protective cover 3 is inserted into the protective shell 2 and slides on the protective shell 2. An arc-shaped groove is opened at the bottom of the protective shell 2 for the connecting wire 4 to pass through. The protective cover 3 connected to the protective shell 2 can further protect the first connector 5 and the second connector 6. The top of the protective cover 3 is rotatably connected to a handle. When the protective shell 2 needs to be opened, the operator holds the handle and pulls the handle upward. The handle moves the protective cover 3 upward and opens the protective cover 3. The operator can then take the first connector 5 and the second connector 6 out of the protective shell 2 for use. After use, the operator moves the protective cover 3 downward again by pulling the handle down to bring the protective cover 3 against the front of the protective shell 2.

[0036] The first connector 5 and the second connector 6 are snapped onto the front of the safety control body 1. The top and bottom of the first connector 5 and the second connector 6 are provided with slots. Two adjustment components 9 are connected to the rear of the first connector 5, and three adjustment components 9 are connected to the rear of the second connector 6. By connecting the first connector 5 and the second connector 6 to the safety control body 1, and by connecting the adjustment components 9 to the first connector 5 and the second connector 6 respectively, the number of plug types can be increased in a limited space, avoiding the trouble of carrying multiple plugs and greatly increasing the portability for staff.

[0037] Please see Figure 5-6 The top and bottom of the rear seat 7 are rotatably connected to a connecting part 8. The rear side of the rear seat 7 abuts against the second connector 6. One end of the connecting part 8 is engaged in a slot opened in the second connector 6, connecting the second connector 6 and the rear seat 7. By connecting the connecting part 8 connected to the rear seat 7, the rear seat 7 can be connected to the second connector 6, thereby achieving the purpose of quickly replacing the plug. The connection is convenient and the operation is simple, avoiding the trouble of having to replace the plug and wires again.

[0038] The middle part of the connecting component 8 is rotatably connected to the rear seat 7. One end of the connecting component 8 connected to the second connecting head 6 is hook-shaped. A spring is connected to the end of the connecting component 8 near the rear seat 7, and the spring is fixed between the rear seat 7 and the connecting component 8. When the rear seat 7 needs to be connected to the second connecting head 6, the operator directly aligns the rear seat 7 with the second connecting head 6 and moves it towards the second connecting head 6. At this time, the hook-shaped part of one end of the connecting component 8 engages in the slot opened in the second connecting head 6, connecting the rear seat 7 to the second connecting head 6. When the first connecting head 5 needs to be replaced, the operator presses the spring end of one end of the connecting component 8 and applies a relative force. At this time, the spring is compressed and shortened, and the hook-shaped end of the connecting component 8 lifts up and separates from the second connecting head 6, so the rear seat 7 can be removed from the second connecting head 6. The rear seat 7 can be connected to the first connecting head 5 in the same way.

[0039] The front side of the rear seat 7 is fixedly connected to the connecting wire 4. The end of the connecting wire 4 away from the rear seat 7 passes through the round hole on the front side of the safety control body 1 and connects to the inside of the safety control body 1. Through the connection method of the connecting wire 4, on the one hand, the connecting wire 4 can be directly stored in the safety control body 1, which is convenient to pull out when in use and retract into the safety control body 1 when not in use. On the other hand, by connecting to the rear seat 7, the plug can be quickly replaced, avoiding the trouble of repeatedly plugging and unplugging the connecting wire 4, making the device more convenient to use.

[0040] Please see Figure 7-8 The first connector 5 and the second connector 6 have grooves on their rear sides. The adjustment component 9 is connected in the grooves. The adjustment component 9 includes a connecting block 901, a pin 902 and an elastic block 903. The two sides of the connecting block 901 are rotatably connected to the grooves opened in the first connector 5 and the second connector 6. The adjustment component 9 can be placed in the grooves opened in the first connector 5 and the second connector 6. The two sides of the connecting block 901 have protrusions that can limit the connecting block 901 in the grooves opened in the first connector 5 and the second connector 6.

[0041] The front side of the connecting block 901 abuts against the elastic block 903, which is connected to the first connector 5 and the second connector 6. A spring is fitted onto the elastic block 903. The connecting block 901 extends and retracts according to the movement of the elastic block 903. The spring connected to the elastic block 903 provides a certain buffering effect on the rotation of the connecting block 901. When the pin 902 needs to be replaced, the operator first rotates the pin 902, which is perpendicular to the first connector 5 and the second connector 6, upward by 90 degrees. At this time, the pin 902 drives the connecting block 901 to rotate, and the elastic block 903 moves according to the rotation of the connecting block 901. When the vertical pin 902 is placed in the groove opened in the first connector 5 and the second connector 6, the elastic block 903 moves to abut against the connecting block 901 according to the elasticity of the spring. The pin 902 at the bottom of the connecting block 901 rotates to be perpendicular to the first connector 5 and the second connector 6, thus completing the replacement of the pin 902.

[0042] The connector 901 has pins 902 fixedly connected to its rear and bottom sides. The pins 902 can be moved between the first connector 5 and the second connector 6 via the connector 901 to adjust the plug type. By using the pins 902 connected to the rear and bottom sides of the connector 901, the connector can be rotated and adjusted according to the type of the external interface, which greatly increases the flexibility of the device.

[0043] Working principle: When in use, the operator moves the safety control body 1 to the place of use, holds the handle on the top of the protective cover 3, and pulls the handle upward. The handle moves the protective cover 3 upward, opening the protective cover 3. The operator can then remove the second connector 6 from the safety control body 1 through the rear seat 7. According to the connector of the external electrical switch cabinet, adjust the pin 902 on the connecting block 901 and plug it into the external electrical switch cabinet. When connecting with different models of electrical switch cabinets, the operator presses the spring end of one end of the connecting part 8, the hook end of the connecting part 8 lifts up, and pulls the rear seat 7 away from the second connector 6. The rear seat 7 can then be removed from the second connector 6 and connected to the first connector 5.

[0044] Example 2

[0045] This embodiment is based on the above embodiment, except that a security system is added to improve the safety of the device.

[0046] refer to Figure 9 Specifically, the safety control device for electrical switch cabinet safety testing also includes a security system. The security system includes a physical interlocking unit and an electrical interlocking unit. The physical interlocking unit is used to control the opening and closing state of the protective cover (3) and to keep the electromagnetic lock of the protective cover (3) locked when the safety control body (1) is powered on.

[0047] The protective cover 3 has multiple slots, which allow it to accommodate the connecting wires in both open and closed states. The electromagnetic lock is located on the outer wall of the protective shell 2. When energized, it locks the protective shell 2 and the protective cover 3 in the closed state. This physical interlock prevents accidental opening of the protective cover 3 for operation when the device is energized inside, thus improving operational safety.

[0048] The electrical interlocking unit includes a monitoring module, which is used to collect temperature and current information inside the protective shell (2);

[0049] It also includes a processing module and an execution module. The processing module is used to compare temperature information and current information with a set threshold and generate an over-limit signal when the set threshold is exceeded. The execution module is used to receive the over-limit signal and disconnect the electrical connection with the electrical switch cabinet through a circuit breaker.

[0050] The processing module includes a temperature unit and a current unit. The temperature unit includes temperature sensors located on the inner wall of the protective shell (2) and temperature acquisition logic. The temperature acquisition logic is activated when the protective cover (3) is flipped and moved. After each activation, it automatically shuts down after a set time and stores the collected temperature information. When the protective cover (3) is flipped again, the temperature information is collected and stored again. At the same time, the difference between the two most recent temperature information is calculated and the result is transmitted to the processing module.

[0051] The current unit includes a current sensor and a current acquisition logic connected in series at each connector. The current acquisition logic includes real-time acquisition of current information at each connector and transmission to the processing module.

[0052] Specifically, the current information at the first connector 5 and the second connector 6 is collected and compared.

[0053] When both states are empty, no current information is transmitted, and the system is in an unused state.

[0054] When the two are different and the lower current information is empty, the higher current information is transmitted to the processing module.

[0055] When neither current information state is empty, leakage current information is generated and transmitted to the processing module. The processing module then controls the execution module to perform an emergency power cut-off.

[0056] More preferably, the processing module includes a data comparison unit and a feedback correction unit. The data comparison unit includes a data storage device and analysis logic. The data storage device is used to receive and cache the current temperature difference information and current information, and at the same time generate temperature difference and current operation curves over a period of time.

[0057] The analysis logic includes using a sliding window method to perform mean and variance analysis on historical current information to generate current trend information. If the deviation of the current current from the mean exceeds a preset ratio, it is determined to be an abnormal trend.

[0058] The analysis logic also includes weighted processing of current trend information and current information. When either of the two values ​​is abnormal, it is transmitted to the feedback correction unit. When both are abnormal, the over-limit signal is triggered to increase its priority and is directly output to the execution module.

[0059] Through comprehensive analysis of multiple factors, the system can identify potential hazards in the early stages, prevent accidents from happening in advance, and nip them in the bud.

[0060] Preferably, the feedback correction unit includes an environmental parameter acquisition device, which is used to collect ambient humidity and external temperature of the device in real time;

[0061] It also includes threshold adaptive logic, which involves correlating historical data with environmental parameters each time temperature difference information is received. If the temperature is close to the threshold for a long time in a high-temperature environment, but the temperature difference is 0 and the device is operating stably, the set value of the temperature threshold will be automatically increased.

[0062] When the execution module has triggered a power-off action and the self-test confirms that it was a false alarm, the system automatically fine-tunes the temperature threshold to reduce the probability of repeated false alarms.

[0063] It also includes cloud-based collaborative logic, which uploads various operational data to the cloud platform via a wireless transmitter, performs long-term big data analysis in the cloud, and provides status assessment parameters. Based on the status assessment parameters, it generates optimization parameters and sends them to the local feedback correction unit. The feedback correction unit receives the optimization parameters and controls the execution module to perform parameter optimization operations. At the same time, it feeds back the optimized current and temperature parameters to the data storage device, thereby adjusting the data output threshold, avoiding false alarms, and realizing cloud-based collaborative dynamic correction.

[0064] Furthermore, the electrical interlocking unit also includes reset logic and self-test logic. The self-test logic includes: S1: checking whether the temperature sensor and current sensor are responding normally to rule out sensor failure;

[0065] S2: Trigger the flip detection switch of the protective cover (3) to verify whether the physical interlock of the protective cover (3) is normal;

[0066] S3: Activate the electromagnetic lock, perform a short-term engagement and release, and check whether the electromagnetic lock is working properly;

[0067] S4: Input the two pre-set test signals, and confirm the normal operation of the current acquisition logic and current sensor by the output results;

[0068] S5: Verify whether the threshold correction set by the feedback correction unit is within a reasonable range to prevent excessive threshold adjustment from causing false alarms;

[0069] S6, collect the above self-test results. When all self-test results are normal, output a normal signal; when there is an abnormal self-test result, output an abnormal alarm signal and transmit it to the execution module to maintain the electrical connection open circuit.

[0070] The reset logic includes unlocking the electromagnetic lock upon receiving the normal signal, allowing the operator to perform a reset operation, adjusting the execution module to standby mode, restoring the electrical connection of the electrical switch cabinet after manual confirmation and reclosing of the protective cover, and simultaneously generating a self-test log and uploading it to the cloud platform.

[0071] Furthermore, the physical interlock uses an electromagnetic lock to lock the protective cover when energized, and the slotted design ensures practicality while preventing accidental operation while energized. In the electrical interlock, the temperature sensor collects the temperature difference as the protective cover flips, the current sensor monitors key connectors and classifies them, and the processing module uses a sliding window to analyze and generate trends. When the limit is exceeded, the circuit breaker is triggered to cut off the power. The device has the ability to adaptively adjust local thresholds and optimize in collaboration with the cloud. It can correct thresholds by associating with environmental parameters and iterate parameters based on big data, effectively eliminating the risk of misoperation and failure, reducing false alarm rate, and improving operation and maintenance reliability and management efficiency.

[0072] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A safety control device for testing electrical switchgear, comprising a safety control body (1), characterized in that: The safety control body (1) is provided with a protective shell (2) and a connecting line (4) on its front side. The protective shell (2) is provided with a first connector (5) and a second connector (6). The second connector (6) is provided with a rear seat (7). The protective shell (2) is provided with a protective cover (3) on its front side. One end of the connecting line (4) passes through the protective shell (2) and is connected to the rear seat (7). The first connector (5) and the second connector (6) are provided with adjustment components (9) on their rear sides. The rear seat (7) is provided with connecting parts (8) at its top and bottom. It also includes a security system, which includes a physical interlocking unit and an electrical interlocking unit. The physical interlocking unit is used to control the opening and closing state of the protective cover (3) and to keep the electromagnetic lock of the protective cover (3) locked when the safety control body (1) is powered on. The top and bottom of the rear seat (7) are rotatably connected by a connecting member (8), the rear side of the rear seat (7) abuts against the second connector (6), and one end of the connecting member (8) is engaged in the slot of the second connector (6). The middle part of the connecting component (8) is rotatably connected to the rear seat (7). One end of the connecting component (8) connected to the second connector (6) is hook-shaped. A spring is provided at one end of the connecting component (8) near the rear seat (7). The spring is fixed between the rear seat (7) and the connecting component (8).

2. The apparatus according to claim 1, characterized in that: The protective shell (2) is fixedly connected to one side of the safety control body (1). A round hole is provided on the side of the safety control body (1) away from the protective shell (2). A rectangular hole and a locking block are provided on the safety control body (1) behind the protective shell (2) to cooperate with the first connector (5) and the second connector (6). The protective cover (3) is detachably inserted into the protective shell (2) and slides along the protective shell (2). The bottom of the protective shell (2) has an arc-shaped groove for the connecting line (4) to pass through.

3. The apparatus according to claim 1, characterized in that: The first connector (5) and the second connector (6) are snapped onto the front of the safety control body (1) on both sides. The top and bottom of the first connector (5) and the second connector (6) are provided with slots. The rear side of the first connector (5) is provided with two adjustment components (9) and the rear side of the second connector (6) is provided with three adjustment components (9).

4. The apparatus according to claim 1, characterized in that: The front side of the rear seat (7) is fixedly connected to the connecting line (4), and one end of the connecting line (4) away from the rear seat (7) passes through the round hole on the front side of the safety control body (1) and connects to the interior of the safety control body (1).

5. The apparatus according to claim 4, characterized in that: The first connector (5) and the second connector (6) have grooves on their rear sides. The adjustment component (9) is disposed in the grooves. The adjustment component (9) includes a connecting block (901), a pin (902) and an elastic block (903). The two sides of the connecting block (901) are rotatably connected in the grooves.

6. The apparatus according to claim 5, characterized in that: The front side of the connecting block (901) abuts against the elastic block (903). The elastic block (903) is located in the first connecting head (5) and the second connecting head (6) and is fitted with a spring. The connecting block (901) can extend and retract as the elastic block (903) moves. The connector (901) has pins (902) fixedly connected to its rear side and bottom. The pins (902) can move with the connector (901) in the first connector (5) and the second connector (6) to adjust the plug type.

7. The apparatus according to claim 6, characterized in that: It also includes a security system, which includes a physical interlocking unit and an electrical interlocking unit. The physical interlocking unit is used to control the opening and closing state of the protective cover (3) and to keep the electromagnetic lock of the protective cover (3) locked when the safety control body (1) is powered on.

8. The apparatus according to claim 7, characterized in that: The processing module includes a data comparison unit and a feedback correction unit. The data comparison unit includes a data storage device and analysis logic. The data storage device is used to receive and cache the current temperature difference information and current information, and at the same time generate temperature difference and current operation curves over a period of time. The analysis logic includes using a sliding window method to perform mean and variance analysis on historical current information to generate current trend information. If the deviation of the current current from the mean exceeds a preset ratio, it is determined to be an abnormal trend. The analysis logic also includes weighted processing of current trend information and current information. When either of the two values ​​is abnormal, it is transmitted to the feedback correction unit. When both are abnormal, the over-limit signal is triggered to increase its priority and is directly output to the execution module.

9. The apparatus according to claim 8, characterized in that: The feedback correction unit includes an environmental parameter acquisition device, which is used to collect ambient humidity and external temperature of the device in real time. It also includes threshold adaptive logic, which involves correlating historical data with environmental parameters each time temperature difference information is received. If the temperature is close to the threshold for a long time in a high-temperature environment, but the temperature difference is 0 and the device is operating stably, the set value of the temperature threshold will be automatically increased.

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