Pre-branched cable connection point temperature rise on-line monitoring device and detection method thereof

Abstract

The invention discloses a pre-branch cable connection point temperature rise on-line monitoring device and a detection method thereof, and relates to the technical field of cable detection devices.The device comprises a shell, a detection cavity is formed in the upper end of the interior of the shell, an element cavity is formed in the lower end of the interior of the shell, and sliding rods are fixedly installed on the two sides of the interior of the detection cavity; first rack plates are slidably mounted on the outer portions of the sliding rods, first springs sleeve the outer portions of the two ends of the sliding rods, a transverse plate is fixedly mounted at the upper end between the two first rack plates, a sliding groove is formed in the front end in the transverse plate, and a second rack plate is slidably mounted in the sliding groove. A second spring is installed between the second rack plate and the sliding groove, an upper cover is arranged above the shell, a connecting plate is fixedly arranged on one side of the bottom of the upper cover, and an adjusting mechanism is arranged at the upper end of one side of the shell. The problem that the maintenance efficiency of the cable is affected as the temperature rise on-line detection device cannot judge the reason of temperature rise in time is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of cable detection devices, and in particular to an online monitoring device for temperature rise at a pre-branching cable connection point and a detection method thereof. Background Art

[0002] The online monitoring device for temperature rise at the pre-branch cable connection point is a device specially used to monitor the temperature changes at the pre-branch cable connection point in the building cable well. The device integrates a collector and multiple temperature sensors, and uses fire-resistant insulation materials to cover the temperature sensor at the cable joint, so as to measure the temperature at the cable joint and the ambient temperature in real time and calculate the difference between the two. This device can predict online whether there is a temperature rise fault at the cable joint, thereby effectively preventing high-rise fire accidents and reducing loss of life and property. It has high temperature measurement accuracy and strong anti-interference ability. It can work stably and reliably in harsh environments such as high temperature and high humidity for a long time, which is of great significance to ensure the safe operation of the power system.

[0003] For example, the Chinese authorized patent "An online monitoring device for temperature rise at the pre-branch cable connection point in a building cable well" with announcement number CN211877255U includes a centralized collector and several temperature sensors; the temperature sensors are connected to the centralized collector in a wired cascade manner, and the temperature sensors are powered by the centralized collector; the temperature sensors are coated with fire-resistant insulation materials at the cable joints in the cable well to measure the temperature at the cable joints and the ambient temperature, and then obtain the difference between the cable joint temperature and the ambient temperature. By monitoring the temperature and ambient temperature at the cable joints in the cable well, it is possible to predict online in advance whether there is a temperature rise fault at the cable joint, avoid high-rise fire accidents, and reduce loss of life and property.

[0004] Although the above-mentioned existing technology can realize online monitoring of the temperature of the pre-branching cable connection point, the general monitoring center is far away from the cable location. In particular, when the temperature of the cable connection point exceeds the set value, it is impossible to promptly determine the cause of the temperature rise, resulting in maintenance personnel having to conduct investigations after arriving at the scene, affecting the maintenance efficiency of the cable. Therefore, it does not meet the existing needs. In this regard, we propose an online monitoring device for the temperature rise of the pre-branching cable connection point and a detection method thereof. Summary of the invention

[0005] The purpose of the present invention is to provide an online temperature rise monitoring device and detection method for a pre-branching cable connection point, so as to solve the problem that the online temperature rise detection device proposed in the above background technology cannot timely determine the cause of the temperature rise, thereby affecting the maintenance efficiency of the cable.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an online monitoring device for temperature rise of a pre-branching cable connection point, comprising a shell, a detection chamber is provided at the upper end of the shell, a component chamber is provided at the lower end of the shell, and the detection chamber and the component chamber are separated by a partition, sliding rods are fixedly installed on both sides of the detection chamber, a first rack plate is slidably installed on the outside of the sliding rod, a first spring is sleeved on the outside of both ends of the sliding rod, a cross plate is fixedly installed on the upper end between the two first rack plates, a sliding groove is provided at the front end of the cross plate, a second rack plate is slidably installed inside the sliding groove, a second spring is installed between the second rack plate and the sliding groove, an upper cover is provided above the shell, a connecting plate is fixedly provided on one side of the bottom of the upper cover, and the connecting plate is slidably connected to the shell, and an adjustment mechanism is provided at the upper end of one side of the shell.

[0007] Preferably, a first rack is provided on one side of the inner wall of the detection chamber, a driving gear is rotatably installed on one side inside the cross plate, and the driving gear is meshed with the first rack, a first sector gear is installed at the rear end of the second rack plate, the outer gear ring of the first sector gear is meshed with the second rack plate, and the transmission wheel of the upper end shaft of the first sector gear and the transmission wheel of the upper end shaft of the driving gear are connected by a belt.

[0008] Preferably, a dual-axis motor is installed at the middle position inside the element cavity, and the shell of the dual-axis motor is fixed to the outer shell, and a second sector gear is fixedly installed on the output shaft of the dual-axis motor, and the second sector gear is meshingly connected with the first rack plate.

[0009] Preferably, a groove is provided on one side of the connecting plate, a second rack is provided on one side of the connecting plate, a transmission gear is rotatably installed inside the adjusting mechanism, and the outer gear ring of the transmission gear is meshed with the second rack, the inner ring of the transmission gear is provided with a plurality of annularly distributed teeth, a movable rod is installed on one side inside the transmission gear, a claw is installed on the outside of the movable rod, the inner hole of the claw is limited by the rotation of the movable rod, and a torsion spring is provided at the connection between the claw and the movable rod, and the claw is engaged with the teeth.

[0010] Preferably, the adjusting mechanism is provided with a receiving groove on the outer side of the transmission gear, and the receiving groove corresponds to the position of the claw, a limiting groove is provided on the outer side of the receiving groove, one end of the movable rod extends to the inside of the limiting groove, and the movable rod and the limiting groove are slidably limited, a screw is rotatably installed inside the limiting groove, one end of the screw extends to the inner screw hole of the movable rod, and the screw and the inner screw hole of the movable rod are threadedly matched, and an adjusting wheel is rotatably installed outside the adjusting mechanism, and the adjusting wheel is fixed to the screw.

[0011] Preferably, arc-shaped buckles are provided at the front and rear of the upper end surface of the shell and the lower end surface of the upper cover.

[0012] Preferably, it includes an online temperature rise monitoring system for the pre-branching cable connection point, which is composed of a data acquisition module, a data processing module, a communication module and a remote monitoring and management platform. The data acquisition module includes a first temperature sensor, a smoke sensor, a humidity sensor and a second temperature sensor. The data acquisition module sends data to the processor through the MQTT protocol.

[0013] Preferably, the first temperature sensor, smoke sensor and humidity sensor are fixedly installed at the bottom of one side of the outer shell by screws, the second temperature sensor is arranged in the middle position of the upper end surface of the transverse plate, and the second rack plate is fixed to the second temperature sensor by a connecting frame, and the processor is fixed inside the element cavity by screws.

[0014] Preferably, the data processing module consists of a data preprocessing module, a diagnosis module and an early warning module. The data preprocessing module denoises and processes missing values ​​on the original data, and calibrates the sensor data according to environmental standards. The diagnosis module builds a temperature rise cause identification model based on a deep learning algorithm. The early warning module sets early warning and alarm thresholds, automatically triggers the early warning mechanism when abnormal conditions are detected, and notifies maintenance personnel via SMS, email, or APP push notifications. The communication module remotely transmits data via a G network, and the remote monitoring and management platform achieves remote access and control via a Web or mobile application interface, supporting real-time monitoring data viewing, historical record query, alarm information viewing, and sensor configuration functions.

[0015] The detection method of the online monitoring device for temperature rise of the pre-branch cable connection point includes the following steps:

[0016] Step 1: System initialization and configuration: Ensure that the first temperature sensor, the second temperature sensor, the humidity sensor, and the smoke sensor are correctly installed inside and outside the housing of the pre-branch cable connection point, and connected to the data acquisition device. Set the system parameters and warning rules according to the cable specifications, ambient temperature range, and warning threshold;

[0017] Step 2: Data collection and transmission: The first temperature sensor, the second temperature sensor, the humidity sensor, and the smoke sensor collect data in real time, including temperature, humidity, and smoke concentration, and send the sensor data to the processor;

[0018] Step 3: Data preprocessing and calibration: De-noise and process missing values ​​of the received raw data, and calibrate the temperature, humidity, and smoke concentration data according to environmental standards and sensor characteristics to eliminate measurement errors;

[0019] Step 4: Temperature distribution analysis and anomaly detection: Use the location information of the second roving temperature sensor to generate a temperature distribution map of the cable connection point, display the hotspot area, run a deep learning algorithm, analyze the temporal changes and spatial distribution of temperature data, identify abnormal temperature rise patterns, and combine external temperature, humidity, and smoke concentration data to analyze their correlation with cable temperature rise, and assist in determining the cause of temperature rise;

[0020] Step 5: Early warning and fault diagnosis: When an abnormal temperature rise is detected or the early warning threshold is reached, the system automatically generates early warning information, including the warning level, location, and possible causes. Based on the results of abnormal detection and multi-factor correlation analysis, the system attempts to diagnose the specific cause of the temperature rise, such as overload, poor contact, environmental factors, or fire source, and promptly notifies relevant personnel of the early warning information and fault diagnosis results through SMS, email, APP push, etc.

[0021] Step 6. Emergency response and subsequent processing: According to the early warning information and fault diagnosis results, relevant personnel will handle it, such as checking cable connections, starting the ventilation system, calling fire-fighting equipment, and recording all early warning events, emergency response measures and results to provide a basis for subsequent data analysis and system optimization. According to historical data and emergency response effects, the system will be evaluated and optimized regularly;

[0022] Step 7. Data analysis and report generation: Regularly analyze the long-term trend of temperature, humidity, and smoke concentration data, evaluate the health status of cable connection points, and generate detailed monitoring reports, including temperature distribution maps, abnormal detection results, fault diagnosis reports, and emergency response records, to provide decision support for management.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention is provided with an online temperature rise monitoring system for the pre-branch cable connection point. The system integrates high-precision sensors, real-time data transmission technology, and advanced intelligent analysis algorithms. When the temperature of the cable connection point rises abnormally, the system can not only detect the change immediately, but also quickly and accurately determine the potential cause of the temperature rise by comprehensively analyzing the ambient temperature, humidity, and smoke. This function greatly shortens the time from problem discovery to cause determination, allowing maintenance personnel to directly carry targeted tools and solutions to the site after receiving an early warning, without having to conduct tedious on-site investigations. Therefore, the system significantly improves the response speed and efficiency of cable maintenance, effectively reduces the risk of power outages caused by cable failures, and provides a strong technical guarantee for the continued stable operation of the power system.

[0025] 2. The present invention is provided with a temperature sensor inspection mechanism, and the dual-axis motor is regularly turned on by the processor. The output shaft of the dual-axis motor drives the second sector gear to rotate. When the outer gear ring of the second sector gear meshes with the first rack plate, the first rack plate is driven to mesh and move toward the front end, thereby driving the second temperature sensor to move forward through the cross plate. During the forward movement of the cross plate, the driving gear on one side meshes with the first rack on the inner wall of the shell, and the meshing action drives the driving gear to rotate. The first sector gear is driven to rotate under the transmission of the belt, and when the outer gear ring is meshed with the second rack plate, the second temperature sensor can be driven to move forward. One side is displaced, and when the first sector gear loses engagement with the second rack plate, the second spring resets the second temperature sensor to the other side. When the second sector gear loses engagement with the first rack plate, the first rack plate is driven to reset backward under the action of the first spring, and the active gear rotates in the opposite direction while the cross plate moves backward. With the cooperation of multiple gears and racks, the second temperature sensor continuously patrols below the cable connection point, thereby collecting the temperature at each position of the cable connection point, ensuring the uniformity of the temperature detection data, and providing good protection for subsequent data analysis and early warning.

[0026] 3. The present invention is provided with a convenient installation structure. When installing the cable, it is only necessary to clamp the corresponding cable into the arc-shaped bayonet on the upper end of the shell. Then the user only needs to press down the upper cover. During the plugging process of the connecting plate, the second rack and the transmission gear drive the transmission gear to rotate clockwise under the meshing action. During the rotation, the claw passes over the tooth back of the clamping tooth and does not enter the clamping tooth. At the same time, the spring between the movable rod and the claw is used to continuously reset the claw to ensure the normal clockwise rotation of the transmission gear, so as to avoid the connecting plate driving the upper cover to be completely closed. The arc-shaped bayonet at the lower end of the upper cover is used to clamp and fix the cable. When the shell and the upper cover need to be separated, If the upper cover is directly pulled up, the second rack will generate a counterclockwise rotation force on the transmission gear, and the transmission gear cannot rotate counterclockwise due to the restriction of the claw, thereby ensuring the firmness of the connection between the outer shell and the upper cover. When the two need to be separated, the screw at one end is driven to rotate by turning the adjusting wheel. Under the friction with the screw hole in the movable rod and the guiding effect of the limit groove on the upper end of the movable rod, the movable rod and the claw are driven to extend into the interior of the storage slot. After the restriction of the transmission gear by the claw is lost, the user can easily pull out the upper cover, thereby realizing the separation of the internal cables, which not only improves the reliability of the connection of the detection device, but also provides a convenient disassembly method. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A three-dimensional diagram of the detection device after installation of the present invention;

[0028] Figure 2 It is a stereoscopic diagram of the pre-installation detection device of the present invention;

[0029] Figure 3A top view of the second temperature sensor inspection structure of the present invention;

[0030] Figure 4 It is a side view of the second temperature sensor inspection structure of the present invention;

[0031] Figure 5 It is a schematic diagram of the connection structure between the housing and the upper cover of the present invention;

[0032] Figure 6 It is a schematic diagram of the internal structure of the regulating mechanism of the present invention;

[0033] Figure 7 This is a diagram of the online monitoring system for temperature rise at the pre-branching cable connection point of the present invention.

[0034] In the figure: 1. shell; 2. upper cover; 3. adjustment mechanism; 4. first temperature sensor; 5. smoke sensor; 6. humidity sensor; 7. adjustment wheel; 8. first rack plate; 9. cross plate; 10. second temperature sensor; 11. first rack; 12. slide bar; 13. first spring; 14. driving gear; 15. first sector gear; 16. belt; 17. sliding groove; 18. second rack plate; 19. second spring; 20. detection cavity; 21. element cavity; 22. second sector gear; 23. processor; 24. connecting plate; 25. groove; 26. second rack; 27. transmission gear; 28. clamping tooth; 29. ​​movable rod; 30. clamping claw; 31. storage groove; 32. limit groove; 33. screw. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] See also Figure 1 , Figure 2 , Figure 3 and Figure 4An embodiment of the present invention is as follows: an online monitoring device for temperature rise of a pre-branch cable connection point, comprising a housing 1, a detection chamber 20 is arranged at the upper end inside the housing 1, a component chamber 21 is arranged at the lower end inside the housing 1, and the detection chamber 20 is separated from the component chamber 21 by a partition, a slide bar 12 is fixedly installed on both sides inside the detection chamber 20, a first rack plate 8 is slidably installed outside the slide bar 12, a first spring 13 is sleeved on the outside of both ends of the slide bar 12, a cross plate 9 is fixedly installed on the upper end between the two first rack plates 8, a sliding groove 17 is arranged at the front end inside the cross plate 9, a second rack plate 18 is slidably installed inside the sliding groove 17, and a second spring 13 is installed between the second rack plate 18 and the sliding groove 17. Spring 19, a double-axis motor is installed at the middle position inside the element cavity 21, and the shell of the double-axis motor is fixed to the shell 1, and the second sector gear 22 is fixedly installed on the output shaft of the double-axis motor, and the second sector gear 22 is meshed with the first rack plate 8, a first rack 11 is provided on one side of the inner wall of the detection cavity 20, a driving gear 14 is rotatably installed on one side inside the cross plate 9, and the driving gear 14 is meshed with the first rack 11, and a first sector gear 15 is installed at the rear end of the second rack plate 18, the outer gear ring of the first sector gear 15 is meshed with the second rack plate 18, and the transmission wheel of the upper end shaft of the first sector gear 15 is connected to the transmission wheel of the upper end shaft of the driving gear 14 through a belt 16.

[0037] When in use, the dual-axis motor is regularly turned on through the processor 23, and the output shaft of the dual-axis motor drives the second sector gear 22 to rotate. When the outer tooth ring of the second sector gear 22 meshes with the first rack plate 8, it drives the first rack plate 8 to move toward the front end, thereby driving the second temperature sensor 10 to move forward through the cross plate 9. During the forward movement of the cross plate 9, the active gear 14 on one side meshes with the first rack 11 on the inner wall of the shell 1, and the meshing action drives the active gear 14 to rotate, and drives the first sector gear 15 to rotate under the transmission of the belt 16. When its outer tooth ring meshes with the second rack plate 18, it can drive the second temperature sensor 10 to move to one side. When the first sector gear 15 After losing engagement with the second rack plate 18, the second temperature sensor 10 is reset to the other side under the reset action of the second spring 19. When the second sector gear 22 loses engagement with the first rack plate 8, the first rack plate 8 is reset backwards under the action of the first spring 13. At the same time, the cross plate 9 moves backwards while the driving gear 14 rotates in the opposite direction. With the cooperation of multiple gears and racks such as the first rack 11, the second rack plate 18, the first sector gear 15, and the second sector gear 22, the second temperature sensor 10 continuously patrols below the cable connection point, so that the temperature of each position of the cable connection point can be collected to ensure the uniformity of the temperature detection data.

[0038] See also Figure 2 , Figure 5 and Figure 6, an upper cover 2 is arranged above the shell 1, a connecting plate 24 is fixedly arranged on one side of the bottom of the upper cover 2, and the connecting plate 24 is slidably connected to the shell 1, an adjustment mechanism 3 is arranged on the upper end of one side of the shell 1, a groove 25 is arranged on one side of the connecting plate 24, a second rack 26 is arranged on one side of the connecting plate 24, a transmission gear 27 is rotatably installed inside the adjustment mechanism 3, and the outer gear ring of the transmission gear 27 is meshed with the second rack 26, the inner ring of the transmission gear 27 is provided with a plurality of annularly distributed teeth 28, a movable rod 29 is installed on one side of the inside of the transmission gear 27, a claw 30 is installed on the outside of the movable rod 29, the inner hole of the claw 30 is limited by the rotation of the movable rod 29, and A torsion spring is provided at the connection between the claw 30 and the movable rod 29, and the claw 30 is engaged with the latch tooth 28. A storage groove 31 is provided on the outer side of the adjustment mechanism 3 located at the transmission gear 27, and the storage groove 31 corresponds to the position of the claw 30. A limiting groove 32 is provided on the outer side of the storing groove 31. One end of the movable rod 29 extends to the inside of the limiting groove 32, and the movable rod 29 and the limiting groove 32 are slidably limited. A screw rod 33 is rotatably installed inside the limiting groove 32, and one end of the screw rod 33 extends to the inner screw hole of the movable rod 29, and the screw rod 33 and the inner screw hole of the movable rod 29 are threadedly matched. An adjusting wheel 7 is rotatably installed outside the adjustment mechanism 3, and the adjusting wheel 7 is fixed to the screw rod 33.

[0039] When installing the cable, it is only necessary to clamp the corresponding cable into the arc-shaped bayonet at the upper end of the housing 1, and then the user only needs to press down the upper cover 2. During the plugging process of the connecting plate 24, the second rack 26 and the transmission gear 27 drive the transmission gear 27 to rotate clockwise under the meshing action. During the rotation, the claw 30 passes over the back of the tooth 28 and does not enter the tooth 28. At the same time, the spring between the movable rod 29 and the claw 30 allows the claw 30 to be reset continuously, ensuring the normal clockwise rotation of the transmission gear 27, preventing the connecting plate 24 from driving the upper cover 2 to be completely closed, and cooperating with the arc-shaped bayonet at the lower end of the upper cover 2 to form a clamping fixation for the cable. When it is necessary to separate the housing 1 and the upper cover 2, if the upper cover 2 is directly pulled up, the second rack 26 will generate a counterclockwise rotation force on the transmission gear 27. Restricted by the claw 30, the transmission gear 27 cannot rotate counterclockwise, thereby ensuring the firmness of the connection between the housing 1 and the upper cover 2. When the two need to be separated, the screw 33 at one end is driven to rotate by turning the adjusting wheel 7. Under the friction with the screw hole in the movable rod 29 and the guiding effect of the limiting groove 32 on the upper end of the movable rod 29, the movable rod 29 and the claw 30 are driven to extend into the storage groove 31. After the restriction of the claw 30 on the transmission gear 27 is lost, the user can easily pull out the upper cover 2, thereby realizing the separation of the internal cables.

[0040] See also Figure 1 and Figure 2 Arc-shaped buckles are provided at the front and rear of the upper end surface of the housing 1 and the lower end surface of the upper cover 2 for clamping and fixing the cables.

[0041] See also Figure 2 The first temperature sensor 4, the smoke sensor 5 and the humidity sensor 6 are fixedly installed at the bottom of one side of the housing 1 by screws, the second temperature sensor 10 is arranged in the middle position of the upper end surface of the cross plate 9, and the second rack plate 18 is fixed to the second temperature sensor 10 by a connecting frame, and the processor 23 is fixed inside the element cavity 21 by screws.

[0042] See also Figure 7 , including an online monitoring system for temperature rise at a pre-branch cable connection point, which consists of a data acquisition module, a data processing module, a communication module and a remote monitoring and management platform. The data acquisition module includes a first temperature sensor 4, a smoke sensor 5, a humidity sensor 6 and a second temperature sensor 10. The data acquisition module sends data to a processor 23 through the MQTT protocol. The data processing module consists of a data preprocessing module, a diagnosis module and an early warning module. The data preprocessing module performs denoising and missing value processing on the original data, and calibrates the sensor data according to environmental standards. The diagnosis module builds a temperature rise cause identification model based on a deep learning algorithm. The early warning module sets early warning and alarm thresholds, automatically triggers an early warning mechanism when an abnormal situation is detected, and notifies maintenance personnel through SMS, email, and APP push notifications. The communication module remotely transmits data through a 4G network. The remote monitoring and management platform realizes remote access and control through a Web or mobile application interface, and supports real-time monitoring data viewing, historical record query, alarm information viewing, and sensor configuration functions;

[0043] It not only pays attention to temperature, but also comprehensively considers multi-dimensional data such as humidity and smoke to improve the accuracy of fault diagnosis, realizes spatial visualization of temperature data, and intuitively displays the thermal status of cable connection points, which is convenient for rapid problem location. It uses AI technology to automatically learn normal state characteristics and improve the sensitivity and specificity of abnormality identification. From early warning to emergency handling, a complete closed-loop management process is formed to ensure a rapid and effective response to temperature rise events.

[0044] The detection method of the online monitoring device for temperature rise of the pre-branch cable connection point includes the following steps:

[0045] Step 1: System initialization and configuration: Ensure that the first temperature sensor 4, the second temperature sensor 10, the humidity sensor 6, and the smoke sensor 5 are correctly installed inside and outside the housing 1 of the pre-branch cable connection point, and are connected to the data acquisition device. Set the system parameters and warning rules according to the cable specifications, ambient temperature range, and warning threshold;

[0046] Step 2: Data collection and transmission: The first temperature sensor 4, the second temperature sensor 10, the humidity sensor 6, and the smoke sensor 5 collect data in real time, including temperature, humidity, and smoke concentration, and send the sensor data to the processor 23;

[0047] Step 3: Data preprocessing and calibration: De-noise and process missing values ​​of the received raw data, and calibrate the temperature, humidity, and smoke concentration data according to environmental standards and sensor characteristics to eliminate measurement errors;

[0048] Step 4: Temperature distribution analysis and anomaly detection: Use the location information of the second roving temperature sensor 10 to generate a temperature distribution diagram of the cable connection point, display the hotspot area, run a deep learning algorithm, analyze the temporal changes and spatial distribution of the temperature data, identify abnormal temperature rise patterns, combine the external temperature, humidity, and smoke concentration data, analyze their correlation with the cable temperature rise, and assist in determining the cause of the temperature rise;

[0049] Step 5: Early warning and fault diagnosis: When an abnormal temperature rise is detected or the early warning threshold is reached, the system automatically generates early warning information, including the warning level, location, and possible causes. Based on the results of abnormal detection and multi-factor correlation analysis, the system attempts to diagnose the specific cause of the temperature rise, such as overload, poor contact, environmental factors, or fire source, and promptly notifies relevant personnel of the early warning information and fault diagnosis results through SMS, email, APP push, etc.

[0050] Step 6. Emergency response and subsequent processing: According to the early warning information and fault diagnosis results, relevant personnel will handle it, such as checking cable connections, starting the ventilation system, calling fire-fighting equipment, and recording all early warning events, emergency response measures and results to provide a basis for subsequent data analysis and system optimization. According to historical data and emergency response effects, the system will be evaluated and optimized regularly;

[0051] Step 7. Data analysis and report generation: Regularly analyze the long-term trend of temperature, humidity, and smoke concentration data, evaluate the health status of cable connection points, and generate detailed monitoring reports, including temperature distribution maps, abnormal detection results, fault diagnosis reports, and emergency response records, to provide decision support for management.

[0052] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An online monitoring device for temperature rise of a pre-branching cable connection point, comprising a housing (1), characterized in that: A detection chamber (20) is arranged at the upper end of the housing (1), and an element chamber (21) is arranged at the lower end of the housing (1), and the detection chamber (20) and the element chamber (21) are separated by a partition. Slide bars (12) are fixedly installed on both sides of the detection chamber (20), and a first rack plate (8) is slidably installed on the outside of the slide bar (12). First springs (13) are sleeved on the outside of both ends of the slide bar (12), and a cross plate (13) is fixedly installed on the upper end between the two first rack plates (8). 9), a sliding groove (17) is provided at the front end of the interior of the transverse plate (9), a second rack plate (18) is slidably installed inside the sliding groove (17), a second spring (19) is installed between the second rack plate (18) and the sliding groove (17), an upper cover (2) is provided above the housing (1), a connecting plate (24) is fixedly provided on one side of the bottom of the upper cover (2), and the connecting plate (24) is slidably connected to the housing (1), and an adjustment mechanism (3) is provided at the upper end of one side of the housing (1).

2. According to claim 1, a pre-branch cable connection point temperature rise online monitoring device is characterized in that: A first rack (11) is provided on one side of the inner wall of the detection chamber (20), a driving gear (14) is rotatably mounted on one side of the interior of the transverse plate (9), and the driving gear (14) is meshedly connected with the first rack (11), a first sector gear (15) is mounted on the rear end of the second rack plate (18), an outer gear ring of the first sector gear (15) is meshed with the second rack plate (18), and a transmission wheel on the upper end shaft of the first sector gear (15) is connected to a transmission wheel on the upper end shaft of the driving gear (14) via a belt (16).

3. The device for online monitoring temperature rise of a pre-branch cable connection point according to claim 1 is characterized in that: A double-shaft motor is installed at a middle position inside the element cavity (21), and the housing of the double-shaft motor is fixed to the outer shell (1). A second sector gear (22) is fixedly installed on the output shaft of the double-shaft motor, and the second sector gear (22) is meshingly connected to the first rack plate (8).

4. The device for online monitoring temperature rise of a pre-branch cable connection point according to claim 1 is characterized in that: A groove (25) is provided on one side of the connecting plate (24), a second rack (26) is provided on one side of the connecting plate (24), a transmission gear (27) is rotatably installed inside the adjusting mechanism (3), and the outer gear ring of the transmission gear (27) is meshed with the second rack (26), the inner ring of the transmission gear (27) is provided with a plurality of annularly distributed latching teeth (28), a movable rod (29) is installed on one side inside the transmission gear (27), a claw (30) is installed on the outside of the movable rod (29), the inner hole of the claw (30) is rotationally limited with the movable rod (29), a torsion spring is provided at the connection between the claw (30) and the movable rod (29), and the claw (30) is latched with the latching teeth (28).

5. The device for online monitoring temperature rise of a pre-branch cable connection point according to claim 4 is characterized in that: The adjusting mechanism (3) is provided with a receiving groove (31) on the outer side of the transmission gear (27), and the receiving groove (31) corresponds to the position of the claw (30), and a limiting groove (32) is provided on the outer side of the receiving groove (31), one end of the movable rod (29) extends to the inside of the limiting groove (32), and the movable rod (29) and the limiting groove (32) are slidably limited, and a screw rod (33) is rotatably installed inside the limiting groove (32), one end of the screw rod (33) extends to the inner screw hole of the movable rod (29), and the screw rod (33) and the inner screw hole of the movable rod (29) are threadedly matched, and an adjusting wheel (7) is rotatably installed outside the adjusting mechanism (3), and the adjusting wheel (7) is fixed to the screw rod (33).

6. The device for online monitoring temperature rise of a pre-branch cable connection point according to claim 1 is characterized in that: Arc-shaped buckles are provided at the front and rear of the upper end surface of the shell (1) and the lower end surface of the upper cover (2).

7. The device for online monitoring temperature rise of a pre-branch cable connection point according to claim 1 is characterized in that: The invention comprises an online monitoring system for the temperature rise of a pre-branching cable connection point, the online monitoring system for the temperature rise of a pre-branching cable connection point comprises a data acquisition module, a data processing module, a communication module and a remote monitoring and management platform, the data acquisition module comprises a first temperature sensor (4), a smoke sensor (5), a humidity sensor (6) and a second temperature sensor (10), and the data acquisition module sends data to a processor (23) through the MQTT protocol.

8. The device for online monitoring temperature rise of a pre-branch cable connection point according to claim 7, characterized in that: The first temperature sensor (4), the smoke sensor (5) and the humidity sensor (6) are fixedly mounted at the bottom of one side of the housing (1) by means of screws, the second temperature sensor (10) is arranged at the middle position of the upper end surface of the transverse plate (9), and the second rack plate (18) is fixed to the second temperature sensor (10) by means of a connecting frame, and the processor (23) is fixed inside the element cavity (21) by means of screws.

9. The device for online monitoring temperature rise of a pre-branch cable connection point according to claim 8, characterized in that: The data processing module consists of a data preprocessing module, a diagnosis module and an early warning module. The data preprocessing module denoises and processes missing values ​​on the original data, and calibrates the sensor data according to environmental standards. The diagnosis module builds a temperature rise cause identification model based on a deep learning algorithm. The early warning module sets early warning and alarm thresholds, automatically triggers the early warning mechanism when abnormal conditions are detected, and notifies maintenance personnel via SMS, email, and APP push notifications. The communication module remotely transmits data through a 4G network, and the remote monitoring and management platform achieves remote access and control through a Web or mobile application interface, supporting real-time monitoring data viewing, historical record query, alarm information viewing, and sensor configuration functions.

10. A detection method based on the online monitoring device for temperature rise at the pre-branch cable connection point according to claim 9, characterized in that: The steps include: Step 1: System initialization and configuration: Ensure that the first temperature sensor (4), the second temperature sensor (10), the humidity sensor (6), and the smoke sensor (5) are correctly installed inside and outside the housing (1) of the pre-branch cable connection point, and are connected to the data acquisition device. Set system parameters and warning rules according to cable specifications, ambient temperature range, and warning thresholds; Step 2: Data collection and transmission: The first temperature sensor (4), the second temperature sensor (10), the humidity sensor (6), and the smoke sensor (5) collect data in real time, including temperature, humidity, and smoke concentration, and send the sensing data to the processor (23); Step 3: Data preprocessing and calibration: De-noise and process missing values ​​of the received raw data, and calibrate the temperature, humidity, and smoke concentration data according to environmental standards and sensor characteristics to eliminate measurement errors; Step 4: Temperature distribution analysis and anomaly detection: using the location information of the second roving temperature sensor (10), generate a temperature distribution diagram of the cable connection point, display the hotspot area, run a deep learning algorithm, analyze the temporal changes and spatial distribution of the temperature data, identify the abnormal temperature rise pattern, combine the external temperature, humidity, and smoke concentration data, analyze the correlation between them and the cable temperature rise, and assist in determining the cause of the temperature rise; Step 5: Early warning and fault diagnosis: When an abnormal temperature rise is detected or the early warning threshold is reached, the system automatically generates early warning information, including the warning level, location, and possible causes. Based on the results of abnormal detection and multi-factor correlation analysis, the system attempts to diagnose the specific cause of the temperature rise, such as overload, poor contact, environmental factors, or fire source, and promptly notifies relevant personnel of the early warning information and fault diagnosis results through SMS, email, APP push, etc. Step 6. Emergency response and subsequent processing: According to the early warning information and fault diagnosis results, relevant personnel will handle it, such as checking cable connections, starting the ventilation system, calling fire-fighting equipment, and recording all early warning events, emergency response measures and results to provide a basis for subsequent data analysis and system optimization. According to historical data and emergency response effects, the system will be evaluated and optimized regularly; Step 7. Data analysis and report generation: Regularly analyze the long-term trend of temperature, humidity, and smoke concentration data, evaluate the health status of cable connection points, and generate detailed monitoring reports, including temperature distribution maps, abnormal detection results, fault diagnosis reports, and emergency response records, to provide decision support for management.

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