A bridge health monitoring device

Abstract

The utility model discloses a bridge health monitoring devices relates to bridge monitoring technical field, including integrated monitoring box, monitoring target and benchmark target, integrated monitoring box installs on the first pier of bridge, and the benchmark target sets up on the second pier adjacent with the first pier, and the monitoring target sets up on the bottom of the bridge superstructure between the first pier and the second pier, is equipped with the processor, communication module, image displacement monitoring module and three -dimensional acceleration inclination sensor in integrated monitoring box, and image displacement monitoring module, three -dimensional acceleration inclination sensor and communication module are connected with the processor respectively, and the processor is used to carry out alarm processing to the monitoring signal received and sends the processing data and alarm result to the external monitoring module through communication module. Adopt the utility model can realize bridge long -term operation state monitoring and emergent event alarm, and moreover, the device integration degree is high, and the installation is convenient, can reduce the installation debugging and the operation and maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of bridge monitoring technology, and in particular to a bridge health monitoring device. Background Technology

[0002] Due to their continuous and real-time characteristics, bridge health monitoring systems play an irreplaceable role in long-term bridge condition assessment and emergency event monitoring and alarm. In recent years, driven by relevant national policies, bridge health monitoring systems have basically achieved full coverage for long bridges, and are now entering a new phase of pilot monitoring for small and medium-sized bridges. Compared to the comprehensive and robust nature of health monitoring systems for long bridges, the large number and small size of individual bridges necessitate a focus on lightweight monitoring for small and medium-sized bridges.

[0003] Lightweight monitoring of small and medium-sized bridges typically involves deploying monitoring devices based on bridge operational risks. Most risk scenarios require monitoring of main girder deflection, vibration acceleration, and bridge tilt. Deflection is a key indicator in bridge monitoring; long-term deflection reflects long-term changes in the bridge's condition, while instantaneous deflection reflects the bridge's stiffness characteristics. Vibration acceleration and bridge tilt can serve as alarm signals in sudden, impact-type special events.

[0004] Currently, on the one hand, the monitoring devices for the above-mentioned indicators are generally independent, requiring separate installation, connection, and debugging, which is cumbersome and inefficient, and does not meet the requirements of large-scale bridge group monitoring, rapid deployment in case of emergencies, and convenient operation and maintenance. On the other hand, the current monitoring of small and medium-sized bridges does not cover temperature indicators, but deflection is closely related to temperature and is significantly affected by temperature. Deflection without temperature correction is not directly comparable, so it is difficult to achieve long-term operational status assessment of bridges without monitoring temperature.

[0005] To address this, this invention proposes a bridge health monitoring device that integrates temperature, deflection, triaxial acceleration, and tilt angle monitoring. This device not only meets the two core monitoring requirements of long-term operational status assessment and emergency alarm for small and medium-sized bridges, but also features high integration, convenient installation, and reduced installation, commissioning, and maintenance costs. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a bridge health monitoring device that can realize long-term monitoring of bridge operation status and alarm of emergencies; moreover, the device has high integration, is easy to install, and can reduce installation, debugging and operation and maintenance costs.

[0007] To address the aforementioned technical problems, this utility model provides a bridge health monitoring device, comprising an integrated monitoring box, a monitoring target, and a reference target. The integrated monitoring box is installed on the first pier of the bridge, the reference target is set on the second pier adjacent to the first pier, and the monitoring target is located at the bottom of the bridge superstructure between the first and second piers. The integrated monitoring box includes a processor, a communication module, an image displacement monitoring module, and a three-dimensional acceleration and tilt sensor. The image displacement monitoring module is connected to the processor and is used to emit light signals to the monitoring target and the reference target, and receive the reflected signals reflected back from the monitoring target and the reference target, process them, and transmit the image data to the processor. The three-dimensional acceleration and tilt sensor is connected to the processor and is used to monitor the vibration acceleration signals and tilt signals of the bridge structure in three directions and transmit them to the processor. The processor is connected to the communication module and is used to perform alarm processing on the received monitoring signals and send the processed data and alarm results to an external monitoring module through the communication module.

[0008] As an improvement to the above solution, a temperature sensor is also provided at the bottom of the bridge superstructure near the integrated monitoring box. The temperature sensor is connected to the processor via a cable and the terminal block of the integrated monitoring box. The temperature sensor is used to monitor the temperature of the bridge structure and send the temperature signal to the processor. The processor is used to send the temperature signal and deflection signal to an external monitoring module so that the external monitoring module can perform a long-term deflection change assessment after eliminating the temperature effect.

[0009] As an improvement to the above solution, the image displacement monitoring module includes an infrared fill light and an infrared optical camera; the infrared fill light is used to emit infrared light signals to illuminate the monitoring target and the reference target, and the infrared optical camera is used to receive the infrared light signals reflected back from the monitoring target and the reference target and send the corresponding image data to the processor.

[0010] As an improvement to the above solution, the integrated monitoring box is connected to a solar power module via a cable. The solar power module is installed on the bridge surface of the first pier and close to the integrated monitoring box. The solar power module is used to supply power to the integrated monitoring box.

[0011] As an improvement to the above solution, the solar power supply module includes a solar power pole and a charging and discharging module connected to the solar power pole. The charging and discharging module is connected to the integrated monitoring box via a cable. The integrated monitoring box also includes a power management module connected to the processor.

[0012] As an improvement to the above solution, the integrated monitoring box is equipped with a gateway module, and the image displacement monitoring module, the triaxial acceleration tilt sensor and the temperature sensor are connected to the processor through the gateway module.

[0013] As an improvement to the above solution, the communication module includes a 4G / 5G mobile network communication module.

[0014] As an improvement to the above solution, the external monitoring module is a server, which is communicatively connected to the mobile terminal and / or the monitoring platform.

[0015] As an improvement to the above solution, the integrated monitoring box also includes an expansion module for connecting other types of monitoring sensors.

[0016] The present invention has the following beneficial effects:

[0017] This utility model integrates temperature, deflection, triaxial acceleration and tilt angle monitoring, which can not only meet the two core monitoring needs of long-term operation status assessment and emergency alarm for small and medium-sized bridges, but also has a high degree of integration, is easy to install, and can reduce installation, commissioning and operation and maintenance costs.

[0018] This invention enables real-time monitoring of vibration acceleration and tilt angle through a three-dimensional acceleration and tilt angle sensor. If a sudden impact-type event causes the acceleration or tilt angle monitoring data to exceed the corresponding threshold, the processor can promptly send an alarm signal to the external monitoring module to realize the emergency alarm function.

[0019] Secondly, the processor is also used to send the deflection signal monitored by the image displacement monitoring module and the temperature signal monitored by the temperature sensor to the external monitoring module in real time, so as to realize the long-term deflection change assessment after eliminating the temperature effect, thereby realizing the assessment of the long-term operating status of the bridge structure. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the installation structure of the bridge health monitoring device of this utility model;

[0021] Figure 2 This is a structural schematic diagram of the integrated monitoring box of this utility model;

[0022] Figure 3 This is a structural schematic diagram of the solar power supply module of this utility model. Detailed Implementation

[0023] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0024] like Figures 1 to 2As shown in the diagram, a specific embodiment of this utility model provides a structural schematic of a bridge health monitoring device, which includes an integrated monitoring box 1, a monitoring target 2, and a reference target 3. The integrated monitoring box 1 is installed on the first pier 4 of the bridge. The reference target 3 is set on the second pier 5 adjacent to the first pier 4 as a reference point. The monitoring target 2 is set at the bottom of the bridge superstructure 6 between the first pier 4 and the second pier 5 as a monitoring point. The integrated monitoring box 1 includes a processor 21, a communication module 22, an image displacement monitoring module 23, and a triaxial acceleration tilt sensor 24.

[0025] The image displacement monitoring module 23 is connected to the processor 21 and is used to emit light signals to the monitoring target 2 and the reference target 3, and to receive the reflected signals reflected back from the monitoring target 2 and the reference target 3. After processing, the image data is transmitted to the processor 21. The triaxial acceleration tilt sensor 24 is connected to the processor 21 and is used to monitor the vibration acceleration signals and tilt signals of the bridge structure in three directions and transmit them to the processor 21. The processor 21 is connected to the communication module 22 and is used to perform alarm processing on the received monitoring signals (the monitoring signals transmitted to the processor 21 by the image displacement monitoring module 23 and the triaxial acceleration tilt sensor 24 respectively) and send the processed data and alarm results to the external monitoring module through the communication module 22.

[0026] The processor 21 receives vibration acceleration signals and tilt angle signals in three directions from the triaxial acceleration and tilt angle sensor 24, realizing vibration acceleration and tilt angle monitoring. When any data of vibration acceleration or tilt angle exceeds the corresponding threshold, an alarm signal is sent to the external monitoring module to realize emergency alarm (such as sudden impact special events such as earthquakes, vehicle / ship collisions or bridge collapses).

[0027] Furthermore, a temperature sensor 7 is also provided at the bottom of the bridge superstructure 6, near the integrated monitoring box 1. The temperature sensor 7 is connected to the terminals of the integrated monitoring box 1 via a cable. The temperature sensor 7 is used to monitor the temperature of the bridge structure and send the temperature signal to the processor 21. The processor 21 is used to send the temperature signal and deflection signal to an external monitoring module so that the external monitoring module can perform a long-term deflection change assessment after eliminating the temperature effect, such as statistically analyzing the deflection change pattern over a specific date at a specific temperature.

[0028] Furthermore, the image displacement monitoring module 23 includes an infrared fill light 231 and an infrared optical camera 232; the infrared fill light 231 is used to emit infrared light signals to illuminate the monitoring target 2 and the reference target 3, and the infrared optical camera 232 is used to receive the infrared light signals reflected back from the monitoring target 2 and the reference target 3 and send the corresponding image data to the processor 21 to realize the image displacement monitoring work.

[0029] Furthermore, in order to enable the integrated monitoring box 1 to operate for extended periods of time, such as... Figure 1 and 3 The integrated monitoring box 1 shown is connected to the solar power module 8 via a cable. The solar power module 8 is used to convert solar energy into electrical energy and power the integrated monitoring box 1, so that the integrated monitoring box 1 can work stably for a long time.

[0030] The solar power supply module 8 includes a solar power generation pole 81 and a charging / discharging module 82 connected to the solar power generation pole 81. The charging / discharging module 82 is connected to the integrated monitoring box 1 via a cable. The integrated monitoring box 1 also includes a power management module 25 connected to the processor 21. By adapting the power management module 25 to the charging / discharging module 82, the power consumption of each electronic device in the integrated monitoring box 1 can be monitored.

[0031] Preferably, the charging and discharging module 82 is a storage battery, but not limited thereto.

[0032] Preferably, such as Figure 2 As shown, the integrated monitoring box 1 is equipped with a gateway module 26. The image displacement monitoring module 23, the triaxial acceleration tilt sensor 24 and the temperature sensor 7 are connected to the processor 21 through the gateway module 26. The gateway module 26 is used to improve the efficiency and security of data transmission.

[0033] Preferably, the communication module 22 includes a 4G / 5G mobile network communication module 22, but is not limited thereto.

[0034] Preferably, the external monitoring module is a server, which is communicatively connected to a mobile terminal and / or a monitoring platform so that relevant personnel can view and analyze the monitoring data in a timely manner.

[0035] Preferably, the integrated monitoring box 1 further includes an expansion module 27, which is used to connect other types of monitoring sensors to improve monitoring diversity and achieve more comprehensive monitoring and analysis of the bridge.

[0036] In summary, this utility model integrates temperature, deflection, triaxial acceleration, and tilt angle monitoring, which can not only meet the two core monitoring needs of long-term operational status assessment and emergency alarm for small and medium-sized bridges, but also has a high degree of integration, is easy to install, and can reduce installation, commissioning, and maintenance costs.

[0037] This invention enables real-time monitoring of vibration acceleration and tilt angle through a three-dimensional acceleration and tilt angle sensor. If a sudden impact-type event causes the acceleration or tilt angle monitoring data to exceed the corresponding threshold, the processor can promptly send an alarm signal to the external monitoring module to realize the emergency alarm function.

[0038] Secondly, the processor is also used to send the deflection signal monitored by the image displacement monitoring module and the temperature signal monitored by the temperature sensor to the external monitoring module in real time, so as to realize the long-term deflection change assessment after eliminating the temperature effect, thereby realizing the assessment of the long-term operating status of the bridge structure.

[0039] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A bridge health monitoring device, characterized in that, The system includes an integrated monitoring box, a monitoring target, and a reference target. The integrated monitoring box is installed on the first pier of the bridge, the reference target is set on the second pier adjacent to the first pier, and the monitoring target is set at the bottom of the bridge superstructure between the first pier and the second pier. The integrated monitoring box is equipped with a processor, a communication module, an image displacement monitoring module, and a three-dimensional acceleration tilt sensor. The image displacement monitoring module is connected to the processor and is used to emit light signals to the monitoring target and the reference target, and to receive the reflected signals reflected back from the monitoring target and the reference target. After processing, the reflected signals are transmitted to the processor. The triaxial acceleration and tilt sensor is connected to the processor and is used to monitor the vibration acceleration and tilt signals of the bridge structure in three directions and transmit them to the processor. The processor is connected to the communication module and is used to perform alarm processing on the received monitoring signals and send the processed data and alarm results to the external monitoring module through the communication module.

2. The bridge health monitoring device according to claim 1, characterized in that, The bottom of the bridge superstructure is also equipped with a temperature sensor near the integrated monitoring box. The temperature sensor is connected to the processor via a cable and the terminal of the integrated monitoring box. The temperature sensor is used to monitor the temperature of the bridge structure and send the temperature signal to the processor. The processor is used to send temperature and deflection signals to an external monitoring module so that the external monitoring module can perform a long-term deflection change assessment after eliminating the temperature effect.

3. The bridge health monitoring device according to claim 1, characterized in that, The image displacement monitoring module includes an infrared fill light and an infrared optical camera; The infrared fill light is used to emit infrared light signals to illuminate the monitoring target and the reference target, and the infrared optical camera is used to receive the infrared light signals reflected back from the monitoring target and the reference target and send the corresponding image data to the processor.

4. The bridge health monitoring device according to claim 1, characterized in that, The integrated monitoring box is connected to a solar power module via a cable. The solar power module is installed on the bridge surface of the first pier and close to the integrated monitoring box. The solar power module is used to supply power to the integrated monitoring box.

5. The bridge health monitoring device according to claim 4, characterized in that, The solar power supply module includes a solar power pole and a charging / discharging module connected to the solar power pole. The charging / discharging module is connected to the integrated monitoring box via a cable. The integrated monitoring box also includes a power management module connected to the processor.

6. The bridge health monitoring device according to claim 2, characterized in that, The integrated monitoring box is equipped with a gateway module, and the image displacement monitoring module, the triaxial acceleration tilt sensor and the temperature sensor are connected to the processor through the gateway module.

7. The bridge health monitoring device according to claim 1, characterized in that, The communication module includes a 4G / 5G mobile network communication module.

8. The bridge health monitoring device according to claim 1, characterized in that, The external monitoring module is a server, which is communicatively connected to the mobile terminal and / or the monitoring platform.

9. The bridge health monitoring device according to claim 1, characterized in that, The integrated monitoring box also includes an expansion module for connecting other types of monitoring sensors.

Images