Self-adapting wireless temperature monitoring device and installation method for stay cable of cable-stayed bridge

Abstract

This invention relates to the field of cable-stayed bridge cable monitoring, specifically to an adaptive wireless temperature monitoring device and installation method for cable-stayed bridge cables. The device includes a cable body with a fixed base coaxially and detachably connected to it. A fixed ring is fixedly connected to the fixed base, and an annular sliding groove is formed along the circumference of the inner wall of the fixed ring. A movable ring corresponding to the fixed ring is coaxially rotatably connected to the cable body. Sliding blocks are symmetrically fixedly connected to the outer walls of the movable rings, each located within a sliding groove and slidingly engaging with it. A control component is provided on the fixed base. Temperature sensors are fixedly connected to symmetrically formed fixed grooves on the inner walls of the movable rings. Cleaning components are symmetrically provided on the inner walls of the movable rings. This invention uses the movable ring to periodically switch the position of the temperature sensors between the sun-facing and shaded sides of the cable body, reducing the risk of accelerated aging and increased measurement accuracy errors caused by long-term exposure of a single sensor to harsh environments, thus improving monitoring reliability.

Description

Technical Field

[0001] This invention relates to the field of cable-stayed bridge cable monitoring, specifically to an adaptive wireless temperature monitoring device and installation method for cable-stayed bridge cables. Background Technology

[0002] As an important structural form of long-span bridges, the temperature changes of the stay cables of cable-stayed bridges have a critical impact on the overall stress and structural safety of the bridge. Temperature gradient differences can lead to uneven deformation of the cables, thereby changing the distribution of cable forces. Under long-term action, this may cause cable fatigue, relaxation, or even wire breakage, seriously threatening the operational safety of the bridge. Therefore, accurate and real-time temperature monitoring of the stay cables of cable-stayed bridges is one of the core components of the bridge structural health management system.

[0003] Currently, the industry mainly uses contact temperature sensors for temperature monitoring of cable-stayed bridge cables. Among them, the most widely used are PT100 platinum resistance temperature sensors, NTC thermistor sensors, and fiber optic grating temperature sensors. Taking the commonly available PT100 temperature sensor as an example, its installation method is usually to fix the sensor directly to the designated measuring point on the surface of the cable using special clamps or binding straps. Its structure consists of a sensing element, a signal conditioning module, a wireless transmission unit, and a power supply module. The sensing element is responsible for sensing the temperature change of the cable, the signal conditioning module converts the temperature signal into a recognizable electrical signal, the wireless transmission unit sends the data to the monitoring base station through low-power communication protocols such as LoRa and NB-IoT, and the power supply module usually uses lithium batteries or solar panels to power the entire system. In the actual use of PT100 temperature sensors for temperature monitoring, to provide basic data for the analysis of thermal expansion and contraction of bridge structures and cable force correction, sensors need to be installed on both the sun-facing and shaded sides of the corresponding measuring points on the cable body to monitor the ambient temperature difference. However, since the sensors are fixed at the measuring point position for a long time by clamps or binding straps, the sensors on the sun-facing side are continuously exposed to direct sunlight, facing higher ambient temperatures, ultraviolet radiation, and wind and rain erosion. This causes the sensors on the sun-facing side to age much faster than those on the shaded side. This not only shortens the overall service life of the sensors, but also reduces the accuracy of temperature measurement due to component aging, thereby affecting the reliability of cable body temperature monitoring data and posing potential risks to the safety assessment of the bridge structure.

[0004] Therefore, this invention proposes an adaptive wireless temperature monitoring device and installation method for the stay cables of cable-stayed bridges to solve the above problems. Summary of the Invention

[0005] To address the aforementioned issues, this invention provides a method for periodically switching the position of the stay cables in a cable-stayed bridge. This reduces the risk of accelerated aging and increased measurement accuracy errors caused by long-term exposure of a single sensor to harsh environments, thereby improving monitoring reliability.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: An adaptive wireless temperature monitoring device for a cable-stayed bridge cable includes a cable body, a fixed base coaxially and detachably connected to the cable body, a fixed ring fixedly connected to the edge of the fixed base along its circumference, an annular sliding groove opened on the inner sidewall of the fixed ring along its circumference, a movable ring corresponding to the fixed ring coaxially and rotatably connected to the cable body, the inner sidewall of the movable ring fitting against the outer sidewall of the cable body, sliding blocks symmetrically fixedly connected to the outer sidewall of the movable ring, the sliding blocks all located in the annular sliding groove and slidingly engaging with the annular sliding groove, a control component for controlling the rotation of the movable ring provided on the fixed base, a fixed groove symmetrically opened on the inner sidewall of the movable ring, a temperature sensor fixedly connected in each fixed groove, a controller embedded in the fixed base, the controller and the temperature sensor being electrically connected, a cleaning component for cleaning the surface of the cable body in the temperature monitoring area symmetrically provided on the inner sidewall of the movable ring, and a wireless transmission component provided in the controller.

[0007] The technical principles of the above solution are as follows: The controller drives the control components to operate, which in turn rotate the movable ring around the cable body (making the movable ring reciprocate by ±180°). This causes the temperature sensor to move around the cable body, enabling temperature measurement at different angles on the cable body surface, especially the sun-facing and shaded sides. During the rotation of the movable ring, the cleaning components inside the movable ring scrape away dirt from the cable body surface, reducing contact interference between the temperature sensor and the cable body. At the same time, the change in the position of the temperature sensor prevents a single temperature sensor from being in a harsh environment for a long time, thus affecting the monitoring accuracy.

[0008] The above approach has the following beneficial effects: 1. This solution adjusts the position of the temperature sensor by using a movable ring to prevent the temperature sensors on the sunny and shady sides from being in the same environment for a long time, which would cause them to age at different rates. For example, the temperature monitoring accuracy of the sunny side due to long-term exposure to the sun is much lower than that of the shady side, which increases the data error. 2. In this solution, during the rotation of the moving ring, the cleaning component contacts the area before the temperature sensor reaches the measuring point, thus pre-cleaning the cable surface using the cleaning component. This reduces the interference of dirt on the cable surface on heat conduction, thereby improving the accuracy of temperature monitoring. 3. This solution reduces the temperature sensor's exposure to direct sunlight for extended periods by changing its location, thus extending the sensor's lifespan compared to traditional fixed-position solutions.

[0009] Furthermore, the control components include a motor, the motor body is fixedly connected to the fixed base near the fixed ring, a main gear is coaxially fixedly connected to the motor output shaft, a secondary gear meshes with the main gear, the secondary gear is coaxially fixedly connected to the movable ring, and the motor is electrically connected to the controller.

[0010] Beneficial effects: The controller controls the motor to run, the motor output shaft drives the main gear to rotate, the main gear drives the secondary gear and the movable ring to rotate, and the rotation of the movable ring realizes the position change of the temperature sensor.

[0011] Furthermore, each cleaning component includes several scrapers that are inclined along the height direction of the movable ring, and the inclination direction of the scrapers is the same. The cross-section of each scraper is set as a conical structure, and the tip of the conical structure of the scraper is in contact with the surface of the cable body.

[0012] Beneficial effects: The scraper blade is inclined along the height of the movable ring, and the conical tip contacts the cable body. The movable ring drives the scraper blade to move circumferentially, and the inclined tip generates a tangential force to remove and drain the dirt.

[0013] Furthermore, the scrapers are all made of silicone.

[0014] Beneficial effects: By utilizing the high coefficient of friction and elastic properties of silicone, the scraper can adapt to the surface of the cable body while avoiding rigid contact that could damage the surface of the cable body.

[0015] Furthermore, several solar panels are fixedly connected to the outer wall of the fixing ring along its circumference, and a storage battery is fixedly connected inside the fixing ring. The storage battery is electrically connected to the controller, temperature sensor and motor.

[0016] Beneficial effects: It can be self-powered by solar panels, and can also provide power at night and on cloudy days with the help of batteries, without the need for additional wiring.

[0017] Furthermore, both the fixed base and the fixed ring have an anti-corrosion coating.

[0018] Beneficial effects: The anti-corrosion coating reduces the damage to the fixed base caused by rainwater and the high humidity and salt spray environment of the bridge, thus extending its service life.

[0019] Furthermore, the probe surface of the temperature sensor is coated with a wear-resistant coating.

[0020] Beneficial effects: The wear-resistant coating reduces the wear of the probe caused by long-term rotational friction and maintains thermal conductivity.

[0021] Furthermore, the wireless transmission component includes a wireless signal transceiver module, which is connected to the monitoring platform via signal transmission.

[0022] Beneficial effects: The wireless signal transceiver module allows for remote reception of temperature data, facilitating operators to adjust the rotation strategy (such as rotation speed) of the moving ring based on temperature monitoring data and environmental conditions.

[0023] Furthermore, the fixed base consists of two symmetrical arc-shaped base plates, with nut seats fixedly connected to both ends of the arc-shaped base plates.

[0024] Beneficial effect: The curved base plate forms a clamp-like structure, which makes it easy to install the fixed base on the cable body.

[0025] Furthermore, a method for installing an adaptive wireless temperature monitoring device for the stay cables of a cable-stayed bridge includes the following steps: S1: Determine the location: Select a representative cable and set cross-sectional measuring points at 1 / 3 and 1 / 2 of the cable; S2: Base installation: Fit the inner walls of the two arc-shaped base plates with the outer wall of the cable body, and use bolts to fix the two arc-shaped base plates to the cable body through the nut seat to form a fixed base; S3: Measuring component installation: Install the temperature sensor in the fixed groove, and snap the sliding block on the movable ring into the annular sliding groove. Then, put the movable ring and the fixed ring onto the cable body, and finally install the fixed ring on the fixed base to complete the installation. S4: Adaptive Control: After installation, during operation, the controller automatically optimizes the rotation cycle and dwell angle based on real-time monitoring of temperature difference, temperature sensor sampling interval, and rotation frequency data of the moving ring. When the temperature difference between the sun-facing and shaded sides exceeds the threshold, the rotation frequency of the moving ring is increased. When the temperature difference between the sun-facing and shaded sides remains stable within the threshold range, the rotation frequency of the moving ring is decreased. The operating status and temperature data are uploaded to the monitoring platform via the wireless signal transceiver module, allowing operators to remotely adjust control parameters and achieve adaptive monitoring and management of the device.

[0026] Beneficial effects: First, setting measuring points at 1 / 3 and 1 / 2 of the cable body allows temperature monitoring to cover key stress-bearing sections of the cable body, avoiding the boundary effects of the anchoring structures at both ends of the stay cable, and providing representative monitoring locations for subsequent adaptive rotation control. Second, using two arc-shaped base plates with nut seats and bolts for fixing eliminates the need for welding or drilling the cable body, forming a stable coaxial fixed base. This ensures the positioning accuracy between the fixed ring and the cable body and provides support for the rotation of the movable ring. Next, the sliding block on the movable ring is engaged in the annular sliding groove, achieving a sliding fit between the movable ring and the fixed ring, allowing the movable ring to rotate smoothly along the circumference of the cable body. At the same time, the temperature sensor is pre-installed in the fixed groove to ensure that the temperature sensor remains in contact with the cable body surface during rotation. Finally, the fixed ring is installed on the fixed base, completing the encapsulation of the entire device. Attached Figure Description

[0027] Figure 1 This is an isometric view of an embodiment of the adaptive wireless temperature monitoring device for cable-stayed bridge cables of the present invention; Figure 2 This is a side sectional view of the fixed base of an embodiment of the adaptive wireless temperature monitoring device for cable-stayed bridge cables of the present invention; Figure 3 This is an appendix to an embodiment of the adaptive wireless temperature monitoring device for cable-stayed bridge cables of the present invention. Figure 2 Detailed drawing at point A; Figure 4 This is a front sectional view of the main gear in an embodiment of the adaptive wireless temperature monitoring device for cable-stayed bridge cables of the present invention. Figure 5 This is a front sectional view of the active ring of an embodiment of the adaptive wireless temperature monitoring device for cable-stayed bridge cables of the present invention; Figure 6 This is an appendix to an embodiment of the adaptive wireless temperature monitoring device for cable-stayed bridge cables of the present invention. Figure 5 Detailed drawing at point B; Figure 7 This is a schematic diagram of an embodiment of the installation method of the adaptive wireless temperature monitoring device for cable-stayed bridge cables of the present invention.

[0028] The reference numerals in the accompanying drawings of the instruction manual include: 1. Cable body; 2. Fixed base; 3. Fixed ring; 4. Annular sliding groove; 5. Movable ring; 6. Sliding block; 7. Fixed groove; 8. Temperature sensor; 9. Motor; 10. Main gear; 11. Secondary gear; 12. Scraper; 13. Nut seat. Detailed Implementation

[0029] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] The following detailed description illustrates the specific implementation method: Example 1:

[0033] As attached Figure 1 As shown: An adaptive wireless temperature monitoring device for the cable-stayed bridge cable includes a cable body 1. When monitoring the temperature of the cable body 1, it is usually necessary to monitor the sunny side and the shaded side of the measuring point of the cable body 1 separately to monitor the environmental temperature difference of the cable body 1. However, the current temperature monitoring equipment is usually fixed to the sunny side and the shaded side of the measuring point by clamps or binding straps. During long-term monitoring, the sunny side is exposed to the sun for a long time and will face higher environmental temperature, ultraviolet radiation and wind and rain erosion. As a result, the monitoring equipment on this side will age much faster than the monitoring equipment on the shaded side, shortening the service life of the monitoring equipment and reducing the measurement accuracy on this side. To extend the service life of monitoring equipment and improve monitoring accuracy, as shown in the attached document... Figure 1 Appendix Figure 2 and attached Figure 3As shown, a fixed base 2 is coaxially and detachably connected to the cable body 1. A fixed ring 3 is bolted to the edge of the fixed base 2 along its circumference. Both the fixed base 2 and the fixed ring 3 have anti-corrosion coatings. An annular sliding groove 4 is formed on the inner wall of the fixed ring 3 along its circumference. A movable ring 5 corresponding to the fixed ring 3 is coaxially rotatably connected to the cable body 1. The inner wall of the movable ring 5 fits against the outer wall of the cable body 1. Sliding blocks 6 are symmetrically welded to the outer wall of the movable ring 5. The sliding blocks 6 are all located in the annular sliding groove 4 and slide in cooperation with the annular sliding groove 4. The fixed base 2 is equipped with a control component for controlling the rotation of the movable ring 5. A fixed groove 7 is symmetrically formed on the inner wall of the movable ring 5. Temperature sensors 8 are bolted to the fixed groove 7 (the probe surface of the temperature sensor 8 is coated with a wear-resistant coating to reduce wear on the probe due to long-term rotational friction and maintain thermal conductivity). A controller is embedded in the fixed base 2. The preferred models of the temperature sensor 8 and the controller are Milesight EM500-PT100, respectively. The industrial temperature sensor and the RisingHF M600 outdoor LoRaWAN node module are electrically connected to the controller and the temperature sensor 8. The electrical connection between the controller and the temperature sensor 8 is achieved through a conductive slip ring. The inner side wall of the movable ring 5 is symmetrically provided with cleaning components for cleaning the surface of the cable body 1 in the temperature monitoring area. The controller is equipped with a wireless transmission component, which includes a wireless signal transceiver module. The wireless signal transceiver module is connected to the monitoring platform signal. Specifically, as shown in the attached document Figure 2 Appendix Figure 3 and attached Figure 4 As shown, the control component includes a motor 9. The motor 9 body is fixedly connected to the fixed base 2 near the fixed ring 3 by bolts. The output shaft of the motor 9 is coaxially fixedly connected to a main gear 10 by bolts. The main gear 10 meshes with a secondary gear 11. The secondary gear 11 is coaxially welded to the movable ring 5. An angle encoder is coaxially fixedly connected to the secondary gear 11 by bolts. The angle encoder and the motor 9 are both electrically connected to the controller. The preferred model of the motor 9 is a Zhengfangyu JGY-370 DC geared motor. As attached Figure 5 and attached Figure 6 As shown, each cleaning component includes several scraper strips 12 that are inclined along the height direction of the movable ring 5, and the inclination direction of the scraper strips 12 is the same. The scraper strips 12 are all bonded to the inner sidewall of the movable ring 5. The cross-section of each scraper strip 12 is set as a conical structure. The tip of the conical structure of each scraper strip 12 is in contact with the surface of the cable body 1. Each scraper strip 12 is made of silicone. Each scraper strip 12 is located upstream of the movement trajectory of the temperature sensor 8.

[0034] The specific implementation process is as follows: When monitoring the temperature of cable-stayed bridge cable 1, in order to accurately obtain the environmental temperature difference between the sunny and shady sides of the measuring point of cable 1, the traditional monitoring method is to fix the monitoring equipment to the sunny and shady sides respectively by clamps or binding straps. However, the monitoring equipment on the sunny side is exposed to high temperature, strong ultraviolet radiation and wind and rain erosion environment for a long time, and the aging speed is much faster than that of the equipment on the shady side. This not only shortens the overall service life, but also causes the measurement accuracy to decrease due to component aging, which brings hidden dangers to the safety assessment of bridge structure. To reduce measurement errors caused by the difference in aging rates between the temperature sensors 8 on the sunny and shady sides, when monitoring the temperature of the cable-stayed bridge's cable body 1, the fixed base 2 is first coaxially installed at 1 / 3 and 1 / 2 of the cable body 1. The controller then sends a command to start the motor 9. The output shaft of the motor 9 drives the main gear 10 to rotate, which in turn drives the secondary gear 11 to rotate. The secondary gear 11 drives the movable ring 5 to rotate circumferentially around the cable body 1. As the movable ring 5 rotates, it causes the temperature sensor 8 to move synchronously. By controlling the temperature sensor 8 to reciprocate at ±180°, the position of the temperature sensor 8 between the sunny and shady sides of the cable body 1 is switched. This prevents one temperature sensor 8 from being exposed to a harsh environment for extended periods, extending its service life and improving the accuracy of temperature monitoring data. During this process, the operator can adjust the rotation speed, rotation period, and rotation angle of the movable ring 5 appropriately according to environmental changes, and adjust the position switching frequency of the temperature sensor 8 based on the actual detection environment, preventing the temperature sensor 8 on the sunny side from being exposed to a harsh environment for extended periods and accelerating its aging. When the movable ring 5 rotates, the scraper 12 moves along the circumference of the cable body 1 along with the movable ring 5. The inclined conical tip generates a tangential force when it contacts the surface of the cable body 1, which can effectively remove dust, oil and other dirt from the surface of the cable body 1 and discharge the dirt along the inclined direction. The surface of the cable body 1 is pre-cleaned before the temperature sensor 8 reaches the monitoring position, which reduces the interference of dirt on the surface of the cable body 1 on heat conduction and further improves the accuracy of temperature monitoring. In the actual monitoring process, the controller can periodically control the motor 9 to drive the movable ring 5 to rotate according to the instructions and preset program of the monitoring platform, realize the periodic switching of the position of the temperature sensor 8, and complete the cleaning work of the monitoring area of ​​the cable body 1 during the rotation of the movable ring 5. This not only reduces the risk of uneven aging of the monitoring equipment on the sun-facing and shaded sides in the traditional monitoring method and extends the service life of the equipment, but also improves the accuracy of temperature monitoring through the cleaning treatment of the surface of the cable body 1, providing reliable data support for the structural safety assessment of the cable body 1 of the cable-stayed bridge. During actual operation, the controller automatically determines the temperature difference between the sun-facing and shaded sides based on the real-time temperature data collected by the temperature sensor 8 and the preset temperature difference threshold. It then dynamically adjusts the rotation cycle and angle of the movable ring 5 according to this temperature difference. When the temperature on the sun-facing side is consistently higher than that on the shaded side and the temperature difference exceeds the preset threshold, the controller controls the motor 9 to increase the rotation frequency of the movable ring 5, thereby shortening the single dwell time of the temperature sensor 8 on the sun-facing side and reducing the impact of high-temperature aging. When the temperature difference range is stable, the controller automatically reduces the rotation frequency to achieve adaptive response to different lighting and climatic conditions, thus extending the equipment's lifespan while ensuring monitoring accuracy.

[0035] Example 2:

[0036] As attached Figure 1 As shown, the difference from Embodiment 1 is that several solar panels (not shown in the figure) are fixedly connected to the outer wall of the fixing ring 3 along its circumference by bolts. A storage battery is fixedly connected to the inside of the fixing ring 3 by bolts. The storage battery is electrically connected to the controller, temperature sensor 8 and motor 9. The electrical connection between the storage battery and the temperature sensor 8 is achieved through conductive slip rings. The solar panels are preferably Jolywood N-type Bifacial Topcon photovoltaic panels. The solar panels achieve self-powering, and together with the storage battery, they can provide continuous power at night and on cloudy days. No additional wiring is required to provide power, which reduces the erosion of wiring by wind and rain.

[0037] Example 3:

[0038] As attached Figure 1 and attached Figure 2 As shown, the difference from Embodiment 2 is that the fixed base 2 is composed of two symmetrical arc-shaped base plates, and nut seats 13 are welded to both ends of the arc-shaped base plates; the arc-shaped base plates form a clamp-like structure, which makes it easy to install the fixed base 2 on the cable body 1.

[0039] Example 4:

[0040] As attached Figure 7 As shown: An installation method for an adaptive wireless temperature monitoring device for the stay cables of a cable-stayed bridge includes the following steps: S1: Determine the location: Select a representative cable body 1 and set cross-sectional measuring points at 1 / 3 and 1 / 2 of the cable body 1; S2: Base installation: Fit the inner sidewalls of the two arc-shaped base plates with the outer sidewall of the cable body 1, and use bolts to fix the two arc-shaped base plates to the cable body 1 through the nut seat 13 to form a fixed base 2; S3: Measuring component installation: Install the temperature sensor 8 in the fixed groove 7, and insert the sliding block 6 on the movable ring 5 into the annular sliding groove 4. Then, put the movable ring 5 and the fixed ring 3 onto the cable body 1, and finally install the fixed ring 3 on the fixed base 2 to complete the installation. S4: Adaptive Control: After installation, during operation, the controller automatically optimizes the rotation cycle and dwell angle based on real-time monitoring of temperature difference, sampling interval of temperature sensor 8, and rotation frequency data of moving ring 5. When the temperature difference between the sun-facing and shaded sides exceeds the threshold, the rotation frequency of moving ring 5 is increased. When the temperature difference between the sun-facing and shaded sides remains stable within the threshold range, the rotation frequency of moving ring 5 is decreased. The operating status and temperature data are uploaded to the monitoring platform via the wireless signal transceiver module, allowing operators to remotely adjust control parameters and realize adaptive monitoring and management of the device.

[0041] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An adaptive wireless temperature monitoring device for cable-stayed bridge cables, comprising a cable body (1), characterized in that: A fixed base (2) is detachably connected to the cable body (1) on the same axis. A fixed ring (3) is fixedly connected to the edge of the fixed base (2) along its circumference. An annular sliding groove (4) is opened on the inner side wall of the fixed ring (3) along its circumference. A movable ring (5) corresponding to the fixed ring (3) is rotatably connected to the cable body (1) on the same axis. The inner side wall of the movable ring (5) is in contact with the outer side wall of the cable body (1). A sliding block (6) is symmetrically fixedly connected to the outer side wall of the movable ring (5). The sliding blocks (6) are all located in the annular sliding groove (4) and are slidably engaged with the annular sliding groove (4). A control component for controlling the rotation of the movable ring (5) is provided on the fixed base (2). A fixed groove (7) is symmetrically opened on the inner side wall of the movable ring (5). A temperature sensor (8) is fixedly connected in the fixed groove (7). A controller is embedded in the fixed base (2). The controller and the temperature sensor (8) are electrically connected. A cleaning component for cleaning the surface of the cable body (1) in the temperature monitoring area is symmetrically provided on the inner side wall of the movable ring (5). A wireless transmission component is provided in the controller.

2. The adaptive wireless temperature monitoring device for cable-stayed bridge cables according to claim 1, characterized in that: The control components include a motor (9), the motor (9) body is fixedly connected to the fixed base (2) on the side near the fixed ring (3), the output shaft of the motor (9) is coaxially fixedly connected to a main gear (10), the main gear (10) meshes with a secondary gear (11), the secondary gear (11) is coaxially fixedly connected to the movable ring (5), and the motor (9) is electrically connected to the controller.

3. The adaptive wireless temperature monitoring device for cable-stayed bridge cables according to claim 1, characterized in that: The cleaning components all include several scraper bars (12) that are inclined along the height direction of the active ring (5), and the scraper bars (12) are all inclined in the same direction. The cross section of the scraper bars (12) is set as a conical structure, and the tip of the conical structure of the scraper bars (12) is in contact with the surface of the cable body (1).

4. The adaptive wireless temperature monitoring device for cable-stayed bridge cables according to claim 3, characterized in that: The scraper strips (12) are all made of silicone.

5. The adaptive wireless temperature monitoring device for cable-stayed bridge cables according to claim 1, characterized in that: Several solar panels are fixedly connected to the outer wall of the fixed ring (3) along its circumference. A storage battery is fixedly connected inside the fixed ring (3). The storage battery is electrically connected to the controller, temperature sensor (8) and motor (9).

6. The adaptive wireless temperature monitoring device for cable-stayed bridge cables according to claim 1, characterized in that: The surfaces of the fixed base (2) and the fixed ring (3) are both coated with anti-corrosion coating.

7. The adaptive wireless temperature monitoring device for cable-stayed bridge cables according to claim 1, characterized in that: The probe surface of the temperature sensor (8) is coated with a wear-resistant coating.

8. The adaptive wireless temperature monitoring device for cable-stayed bridge cables according to claim 1, characterized in that: The wireless transmission component includes a wireless signal transceiver module, which is connected to the monitoring platform.

9. The adaptive wireless temperature monitoring device for cable-stayed bridge cables according to claim 1, characterized in that: The fixed base (2) consists of two symmetrical arc-shaped base plates, and nut seats (13) are fixedly connected to both ends of the arc-shaped base plates.

10. A method for installing an adaptive wireless temperature monitoring device for a cable-stayed bridge cable, operating based on the structure of the adaptive wireless temperature monitoring device for the cable body (1) of a cable-stayed bridge as described in any one of claims 1-9, characterized in that, Includes the following steps: S1: Determine the location: Select a representative cable (1) and set cross-sectional measuring points at 1 / 3 and 1 / 2 of the cable (1); S2: Base installation: The inner walls of the two arc-shaped base plates are attached to the outer wall of the cable body (1), and the two arc-shaped base plates are fixed to the cable body (1) with bolts through the nut seat (13) to form a fixed base (2). S3: Measuring component installation: Install the temperature sensor (8) in the fixed groove (7), and insert the sliding block (6) on the movable ring (5) into the annular sliding groove (4). Then, put the movable ring (5) and the fixed ring (3) on the cable body (1), and finally install the fixed ring (3) on the fixed base (2) to complete the installation. S4: Adaptive control: After installation, during operation, the controller automatically optimizes the rotation cycle and dwell angle based on the real-time monitoring temperature difference, the sampling interval of the temperature sensor (8) and the rotation frequency data of the moving ring (5). When the temperature difference between the sun-facing side and the shaded side exceeds the threshold, the rotation frequency of the moving ring (5) is increased. When the temperature difference between the sun-facing side and the shaded side remains stable within the threshold range, the rotation frequency of the moving ring (5) is reduced. The operating status and temperature data are uploaded to the monitoring platform through the wireless signal transceiver module, so that the operator can remotely adjust the control parameters and realize the adaptive monitoring and management of the device.

Images