Composite sensor and switch cabinet switch contact online monitoring system

Abstract

The invention provides a composite sensor and a switch cabinet switch contact on-line monitoring system, and relates to the technical field of switch cabinet on-line monitoring, the composite sensor comprises a sensor main body, the sensor main body is provided with an arc-shaped notch, a fastener is inserted in the arc-shaped notch, and the fastener is matched with an annular recess on a plum blossom contact; the fastener comprises an arc-shaped connecting part, a clamping jaw part and an abutting fastening part, the arc-shaped connecting part is connected with the clamping jaw part and the abutting fastening part, and the arc-shaped connecting part is matched with the arc-shaped notch in an inserted mode; the abutting fastening part passes through the arc-shaped notch and is matched with the annular recess on the tulip contact. The clamping jaw part penetrates through the arc-shaped notch and abuts against the inner wall of the sensor body so that the arc-shaped connecting part and the abutting fastening part can be fixed to the sensor body. The abutting fastening plate in the fastener is matched with the annular recess on the tulip contact, so that the stability of connection between the tulip contact and the sensor main body is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of switch cabinet online monitoring, and in particular to a composite sensor and a switch cabinet switch contact online monitoring system. Background Art

[0002] With the development of society, people's demand for electricity is increasing. The load capacity of high-voltage transmission lines is primarily determined by the rated operating current of the switchgear and cables. In actual operation, since most high-voltage switchgear uses trolley or center-mounted circuit breakers, heating of the moving and static contacts between the circuit breaker and the switchgear is common, affecting the line's load capacity and, in severe cases, causing accidents such as switchgear burnout.

[0003] In the related technology, there is a composite sensor and an online monitoring system for switch contacts of a switch cabinet, which includes a bracket; a control main board, installed in a first annular groove; a first pressure acquisition module, installed on a long placement board; a second pressure acquisition module, installed on a short placement board; a pressure sensor, installed on the outside of the bracket; a pressure conduction sheet, the upper end of which is installed in the first groove, the middle end is attached to the pressure sensor, and the lower end is installed in the second groove; a pressure equalizing spring, installed in the second annular groove, and pressed on the upper end of the pressure conduction sheet; a temperature sensor, installed on the opening, and attached to the upper end of any moving contact in the moving contact assembly; an insertion depth detection mechanism, installed on the moving contact of the moving contact assembly; and a power supply mechanism, installed between the second annular groove and the base.

[0004] Regarding the above-mentioned related technical solutions, the inventor believes that the following defects exist: during the process of installing the composite sensor on the plum blossom contact, the plum blossom contact and the composite sensor are mainly initially fixed by the friction between the two. However, after the initial connection, shaking may occur between the plum blossom contact and the composite sensor, thereby affecting the stability of the connection between the plum blossom contact and the composite sensor. Summary of the Invention

[0005] The problem solved by the present invention is to improve the stability of the connection between the plum blossom contact and the composite sensor.

[0006] To solve the above problems, in the first aspect, the present invention provides a composite sensor, which adopts the following technical solutions:

[0007] A composite sensor comprises a sensor body, wherein the sensor body is provided with an arc-shaped notch, a fastener is inserted into the arc-shaped notch, and the fastener matches the annular recess on the plum blossom contact;

[0008] The fastener includes an arc-shaped connecting portion, a clamping claw portion and an abutting fastening portion. The arc-shaped connecting portion is connected to the clamping claw portion and the abutting fastening portion, and the arc-shaped connecting portion is plugged into the arc-shaped slot; the abutting fastening portion passes through the arc-shaped slot and matches the annular recess on the plum blossom contact; the clamping claw portion passes through the arc-shaped slot and abuts against the inner wall of the sensor body, so as to fix the arc-shaped connecting portion and the abutting fastening portion on the sensor body.

[0009] Optionally, there are at least two clamping jaws, and the plurality of clamping jaws are distributed around the abutting and fastening portion, and there is a gap between each of the clamping jaws and the abutting and fastening portion;

[0010] The clamping claw portion includes an elastic rod and an abutment head, the elastic rod is fixedly connected to the arc-shaped connecting portion, and the elastic rod is arranged through the arc-shaped slot, the abutment head is fixedly connected to one end of the elastic rod away from the arc-shaped connecting portion, and the abutment head passes through the arc-shaped slot and abuts against the inner circumferential wall of the sensor body.

[0011] Optionally, a slope is provided on a side of the abutting head away from the abutting fastening portion.

[0012] Optionally, a main controller, an insertion depth sensor, a temperature sensor, and a pressure acquisition sensor are installed in the sensor body;

[0013] The insertion depth sensor is used to monitor the insertion depth of the static contact into the interior of the plum blossom contact, the temperature sensor is used to collect the temperature inside the plum blossom contact, and the pressure collection sensor is used to monitor the clamping force of the contact fingers of the plum blossom contact;

[0014] The input end of the main controller is electrically connected to the insertion depth sensor, the temperature sensor, and the pressure acquisition sensor, and is respectively used to receive the insertion depth information fed back by the insertion depth sensor, the temperature information of the temperature sensor, and the contact finger clamping force information of the pressure acquisition sensor.

[0015] Optionally, a Hall coil and a voltage stabilization module are installed in the sensor body, the output end of the Hall coil is electrically connected to the voltage stabilization module, and the output end of the voltage stabilization module is used to provide a stable power supply to the main controller, the insertion depth sensor, the temperature sensor and the pressure acquisition sensor.

[0016] Optionally, a wireless transmission module is further installed in the sensor body, and the output end of the main controller is electrically connected to the wireless transmission module.

[0017] In a second aspect, the present invention provides an online monitoring system for switch contacts of a switch cabinet, which adopts the following technical solutions:

[0018] An online monitoring system for switch contacts of a switch cabinet, the system comprising:

[0019] An information receiving module is used to receive temperature information, insertion depth information, and contact finger clamping force information fed back by a main controller in the composite sensor;

[0020] an alarm feedback module, configured to generate early warning information or safety information based on the temperature information, the insertion depth information, the contact finger clamping force information, and preset threshold judgment information;

[0021] The information sending module is used to send the warning information or the safety information to the user's control terminal.

[0022] Optionally, the alarm feedback module is configured to generate warning information or safety information based on the temperature information, the insertion depth information, the contact finger clamping force information, and preset threshold judgment information, specifically including:

[0023] comparing the temperature information, the insertion depth information, and the stylus finger clamping force information with the temperature threshold, the insertion depth threshold, and the stylus finger clamping force threshold in the threshold determination information, respectively;

[0024] If the temperature value in the temperature information is lower than the temperature threshold, the insertion depth value in the insertion depth information is greater than the insertion depth threshold, and the stylus finger clamping force value in the stylus finger clamping force information is greater than the stylus finger clamping force threshold, then generate safety information;

[0025] If the temperature value in the temperature information is higher than or equal to the temperature threshold, and / or the insertion depth value in the insertion depth information is less than or equal to the insertion depth threshold, and / or the touch finger clamping force value in the touch finger clamping force information is less than or equal to the touch finger clamping force threshold, an early warning message is generated.

[0026] Optionally, the system further includes a temperature rise estimation module:

[0027] The temperature rise estimation module is used to generate a unit temperature change rate based on the temperature information obtained in real time;

[0028] The temperature rise estimation module is further configured to generate an estimated temperature rise within a preset time period after the current moment based on the unit temperature change information;

[0029] The temperature rise estimation module further generates warning information or safety information based on the estimated temperature rise, the currently received temperature information, and the threshold determination information.

[0030] In summary, this application includes at least one of the following beneficial technical effects:

[0031] After the composite sensor is mounted on the plum blossom contact, the fastener is installed in the arc-shaped notch of the sensor body so that the abutting fastening plate in the fastener matches the annular recess on the plum blossom contact, thereby enhancing the stability of the connection between the plum blossom contact and the sensor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the assembly of the sensor body in the embodiment of the present application;

[0033] Figure 2 This is a schematic diagram of the overall structure of the sensor body in the embodiment of the present application;

[0034] Figure 3 This is a schematic diagram of the overall structure of the sensor body from another perspective in an embodiment of the present application;

[0035] Figure 4 This is a schematic diagram of the overall structure of the uploading fastener in the embodiment of the present application;

[0036] Figure 5 This is a structural block diagram of the control circuit of the main controller in the embodiment of the present application;

[0037] Figure 6 This is a system block diagram of an online monitoring system for switch contacts of a switch cabinet in an embodiment of the present application.

[0038] Explanation of the accompanying drawings: 1. plum blossom contact; 2. sensor body; 21. arc-shaped notch; 3. fastener; 31. arc-shaped connecting part; 32. clamping claw part; 321. elastic rod; 322. abutment head; 33. abutment fastening part; 3. main controller; 31. insertion depth sensor; 32. temperature sensor; 33. pressure acquisition sensor; 34. Hall coil; 35. voltage stabilization module; 36. wireless transmission module; 41. information receiving module; 42. alarm feedback module; 43. information sending module; 44. temperature rise estimation module. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the following Figure 1-6 The specific embodiments of the present invention are described in detail.

[0040] The embodiment of the present application discloses a composite sensor. Figure 1 The composite sensor includes a sensor body 2, wherein the sensor body 2 is mounted on the plum blossom contact 1 of the circuit breaker. The plum blossom contact 1 on the circuit breaker is used to contact the static contact in the switch cabinet to build a power transmission line.

[0041] like Figure 2 and Figure 3 as well as Figure 4 As shown, the sensor body 2 is provided with a plurality of fasteners 3, preferably three in the embodiment of the present application, and evenly distributed along the circumference of the sensor body 2. The sensor body 2 is provided with a plurality of arcuate notches 21, and the number of arcuate notches 21 corresponds to the number of fasteners 3.

[0042] The fastener 3 includes an arc-shaped connecting portion 31 , a clamping claw portion 32 and an abutting fastening portion 33 , and the clamping claw portion 32 and the abutting fastening portion 33 are both integrally formed with the arc-shaped connecting portion 31 .

[0043] The arc-shaped connecting portion 31 is plugged into the arc-shaped notch 21 , the abutting and fastening portion 33 is disposed through the arc-shaped notch 21 , and the abutting and fastening portion 33 matches the annular recess on the plum blossom contact 1 .

[0044] There are multiple clamping claw portions 32, and in the embodiment of the present application, two are preferred. The two clamping claw portions 32 are distributed on both sides of the abutting and fastening portion 33. There is a gap between each clamping claw portion 32 and the abutting and fastening portion 33, and the clamping claw portion 32 passes through the arc-shaped slot 21 and abuts against the inner wall of the sensor body 2, so as to fix the arc-shaped connecting portion 31 and the abutting and fastening portion 33 on the sensor body 2.

[0045] After the composite sensor is mounted on the plum blossom contact 1, the fastener 3 is installed in the arc-shaped notch 21 of the sensor body 2 so that the abutting fastening plate in the fastener 3 matches the annular recess on the plum blossom contact 1, thereby enhancing the stability of the connection between the plum blossom contact 1 and the sensor body 2.

[0046] like Figure 2 and Figure 4 As shown, the clamping claw portion 32 includes an elastic rod 321 and an abutment head 322. Here, the arc-shaped connecting portion 31, the abutting and fastening portion 33, and the elastic rod 321 and the abutment head 322 of the clamping claw portion 32 are all made of plastic material. The elastic rod 321 is integrally connected to the arc-shaped connecting portion 31, and the elastic rod 321 is arranged through the arc-shaped slot 21. The abutment head 322 is integrally connected to one end of the elastic rod 321 away from the arc-shaped connecting portion 31, and the abutment head 322 passes through the arc-shaped slot 21 and abuts against the inner circumferential wall of the sensor body 2.

[0047] A slope is provided on a side of the abutting head 322 away from the abutting fastening portion 33 , and the slope of the abutting head 322 is tilted downward from the side away from the arc-shaped connecting portion 31 to the side close to the arc-shaped connecting portion 31 .

[0048] During the process of installing the fastener 3 on the sensor body 2, the arc-shaped connecting portion 31 is pushed so that the inclined surfaces of the two abutting portions 322 contact the side walls of the arc-shaped slot 21, thereby enabling the side walls of the arc-shaped slot 21 to push the two abutting portions 322 to move toward the side close to the abutting fastening portion 33, thereby enabling the abutting portion 322 and the elastic rod 321 to pass through the arc-shaped slot 21.

[0049] After the abutting head 322 passes through the arc-shaped notch 21 , the abutting head 322 is reset under the elastic force of the elastic rod 321 , thereby fixing the arc-shaped connecting portion 31 and the abutting and fastening portion 33 on the sensor body 2 .

[0050] When the fastener 3 needs to be removed, the two abutting heads 322 are pressed to move the two abutting heads 322 closer to the abutting fastening portion 33 , and then the arcuate connecting portion 31 or the abutting fastening portion 33 is moved to facilitate the removal of the fastener 3 .

[0051] like Figure 2 and Figure 5 As shown, the sensor body 2 is also equipped with a main controller 3, an insertion depth sensor 31, a temperature sensor 32, a pressure acquisition sensor 33, a Hall coil 34, a voltage stabilization module 35, and a wireless transmission module 36.

[0052] The sensor body 2 has an annular groove formed on its sidewall, and a Hall effect coil 34 is mounted within this groove. When current flows through the contact 1, the Hall effect coil 34 generates an electric potential due to electromagnetic effects, which is used to supply power to the various electronic devices within the sensor body 2. The output of the Hall effect coil 34 is electrically connected to a voltage stabilization module 35, which in turn provides stable power to the controller 3, the insertion depth sensor 31, the temperature sensor 32, the pressure sensor, and the wireless transmission module 36.

[0053] like Figure 2 and Figure 5 As shown, the insertion depth sensor 31 in the sensor body 2 is used to monitor the depth of the static contact inserted into the plum blossom contact 1, the temperature sensor 32 is used to collect the temperature inside the plum blossom contact 1, and the pressure collection sensor 33 is used to monitor the contact finger clamping force. There are at least two pressure collection sensors 33 here, and the accuracy of the contact finger clamping force monitoring is enhanced by running the amplifier.

[0054] The multiple input ends of the main controller 3 are electrically connected to the output end of the insertion depth sensor 31, the output end of the temperature sensor 32, and the output end of the pressure acquisition sensor 33, and are respectively used to receive the insertion depth information fed back by the insertion depth sensor 31, the temperature information of the temperature sensor 32, and the stylus clamping force information fed back by the pressure acquisition sensor 33.

[0055] The output end of the main controller 3 is electrically connected to the wireless transmission module 36. The main controller 3 sends the insertion depth information, temperature information and contact finger clamping force information to the processor of the switch cabinet monitoring and comprehensive analysis system through the wireless transmission module 36, so as to facilitate real-time monitoring of the connection status of the plum blossom contact 1 and the static contact in the switch cabinet.

[0056] The embodiment of the present application further discloses an online monitoring system for switch contacts of a switch cabinet. The switch cabinet monitoring and comprehensive analysis system includes an information receiving module 41 , an alarm feedback module 42 , an information sending module 43 and a temperature rise estimation module 44 .

[0057] An information receiving module 41 is used to receive temperature information, insertion depth information, and contact finger clamping force information fed back by the main controller 3 in the composite sensor;

[0058] During implementation, the information receiving module 41 of the switch cabinet monitoring and comprehensive analysis system receives in real time the temperature information, insertion depth information and contact finger clamping force information fed back by the wireless transmission module 36 of the main controller 3, so that the switch cabinet monitoring and comprehensive analysis system can judge the connection status of the plum contact 1 and the static contact through the temperature information, insertion depth information and contact finger clamping force information.

[0059] An alarm feedback module 42 is configured to generate warning information or safety information based on temperature information, insertion depth information, contact finger clamping force information, and preset threshold judgment information;

[0060] During implementation, in order to facilitate the judgment of the state between the plum blossom contact 1 and the static contact in the switch cabinet, threshold judgment information is preset in the switch cabinet monitoring and comprehensive analysis system. Then, the temperature information, insertion depth information and contact finger clamping force information are compared with the threshold judgment information respectively. For example, if the temperature value in the temperature information is higher than the temperature threshold in the threshold judgment information, an early warning message is generated; if the temperature value in the temperature information is within a safe range, the insertion depth value in the insertion depth information is within a safe range, and the contact clamping force in the contact finger clamping force information is within a safe range, a safety message is generated.

[0061] The information sending module 43 is used to send warning information or safety information to the user's control terminal.

[0062] During implementation, the information sending module 43 of the switch cabinet monitoring and comprehensive analysis system sends warning information or safety information to the user's control terminal, so that the user can timely understand the connection status between the plum blossom contact 1 and the static contact in the switch cabinet.

[0063] Optionally, the alarm feedback module 42, which is used to generate warning information or safety information based on the temperature information, the insertion depth information, the contact finger clamping force information, and the preset threshold judgment information, can also include the following processing. The specific process is as follows:

[0064] Comparing the temperature information, the insertion depth information, and the stylus finger clamping force information with the temperature threshold, the insertion depth threshold, and the stylus finger clamping force threshold in the threshold determination information, respectively;

[0065] If the temperature value in the temperature information is lower than the temperature threshold, the insertion depth value in the insertion depth information is greater than the insertion depth threshold, and the stylus finger clamping force value in the stylus finger clamping force information is greater than the stylus finger clamping force threshold, then a safety message is generated;

[0066] If the temperature value in the temperature information is higher than or equal to the temperature threshold, and / or the insertion depth value in the insertion depth information is less than or equal to the insertion depth threshold, and / or the touch finger clamping force value in the touch finger clamping force information is less than or equal to the touch finger clamping force threshold, an early warning message is generated.

[0067] In practice, the alarm feedback module 42 of the switchgear monitoring and comprehensive analysis system compares the temperature information, the insertion depth information, and the contact finger clamping force information with the temperature threshold, the insertion depth threshold, and the contact finger clamping force threshold in the threshold judgment information, respectively. The comparison results may be as follows:

[0068] Case 1: If the temperature value in the temperature information is lower than the temperature threshold, the insertion depth value in the insertion depth information is greater than the insertion depth threshold, and the stylus clamping force value in the stylus clamping force information is greater than the stylus clamping force threshold, then a safety message is generated;

[0069] Case 2: If the temperature value in the temperature information is higher than or equal to the temperature threshold, an early warning message is generated;

[0070] Case 3: If the insertion depth value of the insertion depth information is less than or equal to the insertion depth threshold, a warning message is generated;

[0071] If the fourth situation exists: the finger clamping force value in the finger clamping force information is less than or equal to the finger clamping force threshold, a warning message is generated.

[0072] Optionally, the temperature rise estimation module 44 in the present application further includes the following processing, and the specific operation contents are as follows:

[0073] The temperature rise estimation module 44 is used to generate a unit temperature change rate based on the temperature information obtained in real time;

[0074] The temperature rise estimation module 44 is further configured to generate an estimated temperature rise within a preset time period after the current moment based on the unit temperature change information;

[0075] The temperature rise prediction module 44 also generates warning information or safety information based on the predicted temperature rise, the currently received temperature information, and the threshold judgment information.

[0076] In practice, the temperature rise estimation module 44 in the switchgear monitoring and comprehensive analysis system generates a unit temperature change rate based on the temperature information received in real time. The unit time in the unit temperature change rate here can be 1s or 1ms.

[0077] The temperature rise estimation module 44 then calculates the estimated temperature rise within the estimated time period after the current moment based on the unit temperature rise change rate. The temperature rise estimation module then adds the estimated temperature rise to the temperature value in the currently received temperature information to generate the estimated temperature.

[0078] Furthermore, the temperature rise prediction module 44 compares the predicted temperature with the temperature threshold in the threshold judgment information. If the predicted temperature is greater than or equal to the temperature threshold, a warning message is generated; if the predicted temperature is less than the temperature threshold, a safety message is generated.

[0079] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A composite sensor, characterized in that: The sensor body (2) comprises a sensor body (2), wherein an arc-shaped notch (21) is provided on the sensor body (2), a fastener (3) is inserted into the arc-shaped notch (21), and the fastener (3) matches the annular recess on the plum blossom contact (1); The fastener (3) comprises an arc-shaped connecting portion (31), a clamping claw portion (32) and an abutting fastening portion (33); the arc-shaped connecting portion (31) is connected to the clamping claw portion (32) and the abutting fastening portion (33), and the arc-shaped connecting portion (31) is plug-fitted with the arc-shaped slot (21); the abutting fastening portion (33) passes through the arc-shaped slot (21) and matches the annular recess on the plum blossom contact (1); the clamping claw portion (32) passes through the arc-shaped slot (21) and abuts against the inner wall of the sensor body (2), so as to facilitate fixing the arc-shaped connecting portion (31) and the abutting fastening portion (33) on the sensor body (2).

2. A composite sensor according to claim 1, characterized in that: There are at least two clamping claws (32), and the plurality of clamping claws (32) are distributed around the abutting and fastening portion (33), and there is a gap between each clamping claw (32) and the abutting and fastening portion (33); The clamping claw portion (32) includes an elastic rod (321) and an abutting joint (322), wherein the elastic rod (321) is fixedly connected to the arc-shaped connecting portion (31), and the elastic rod (321) is arranged through the arc-shaped slot (21), and the abutting joint (322) is fixedly connected to an end of the elastic rod (321) away from the arc-shaped connecting portion (31), and the abutting joint (322) passes through the arc-shaped slot (21) and abuts against the inner peripheral wall of the sensor body (2).

3. A composite sensor according to claim 2, characterized in that: A slope is provided on a side of the abutting head (322) away from the abutting fastening portion (33).

4. The composite sensor according to claim 1, characterized in that: The sensor body (2) is equipped with a main controller (3), an insertion depth sensor (31), a temperature sensor (32), and a pressure acquisition sensor (33); The insertion depth sensor (31) is used to monitor the depth of the static contact inserted into the interior of the plum blossom contact (1); the temperature sensor (32) is used to collect the temperature inside the plum blossom contact (1); and the pressure collection sensor (33) is used to monitor the contact finger clamping force of the plum blossom contact (1); The input end of the main controller (3) is electrically connected to the insertion depth sensor (31), the temperature sensor (32), and the pressure acquisition sensor (33), and is used to receive the insertion depth information fed back by the insertion depth sensor (31), the temperature information from the temperature sensor (32), and the contact finger clamping force information from the pressure acquisition sensor (33).

5. A composite sensor according to claim 4, characterized in that: A Hall coil (34) and a voltage stabilization module (35) are installed in the sensor body (2); the output end of the Hall coil (34) is electrically connected to the voltage stabilization module (35), and the output end of the voltage stabilization module (35) is used to provide a stable power supply to the main controller (3), the insertion depth sensor (31), the temperature sensor (32), and the pressure acquisition sensor (33).

6. The composite sensor according to claim 5, characterized in that: A wireless transmission module (36) is also installed in the sensor body (2), and the output end of the main controller (3) is electrically connected to the wireless transmission module (36).

7. A switch cabinet switch contact online monitoring system, characterized in that: The system comprises: An information receiving module (41) is used to receive temperature information, insertion depth information, and contact finger clamping force information fed back by a main controller (3) in the composite sensor; an alarm feedback module (42) for generating early warning information or safety information based on the temperature information, the insertion depth information, the contact finger clamping force information, and preset threshold judgment information; An information sending module (43) is used to send the warning information or the safety information to the user's control terminal.

8. The switch cabinet switch contact online monitoring system according to claim 7, characterized in that: The alarm feedback module (42) is used to generate early warning information or safety information based on the temperature information, the insertion depth information, the contact finger clamping force information and the preset threshold judgment information, specifically including: comparing the temperature information, the insertion depth information, and the stylus finger clamping force information with the temperature threshold, the insertion depth threshold, and the stylus finger clamping force threshold in the threshold determination information, respectively; If the temperature value in the temperature information is lower than the temperature threshold, the insertion depth value in the insertion depth information is greater than the insertion depth threshold, and the stylus finger clamping force value in the stylus finger clamping force information is greater than the stylus finger clamping force threshold, then generate safety information; If the temperature value in the temperature information is higher than or equal to the temperature threshold, and / or the insertion depth value in the insertion depth information is less than or equal to the insertion depth threshold, and / or the touch finger clamping force value in the touch finger clamping force information is less than or equal to the touch finger clamping force threshold, an early warning message is generated.

9. The switch cabinet switch contact online monitoring system according to claim 8, characterized in that: The system further comprises a temperature rise estimation module (44): The temperature rise estimation module (44) is used to generate a unit temperature change rate based on the temperature information obtained in real time; The temperature rise estimation module (44) is further configured to generate an estimated temperature rise within a preset time period after the current moment based on the unit temperature change information; The temperature rise estimation module (44) also generates warning information or safety information based on the estimated temperature rise, the currently received temperature information, and the threshold determination information.

Images