Bridge health monitoring system

Abstract

The utility model relates to the field of bridge monitoring, in particular to a bridge health monitoring system, which comprises a work area server, a power supply electrically connected with the work area server, and a serial port server, a data acquisition unit and a sensor unit which are sequentially in communication connection with the work area server, the data acquisition unit comprises a network distributed data acquisition instrument, a comprehensive acquisition expansion module and a high-speed bus acquisition module, and the sensor unit comprises a hydrological monitoring module, a vibration monitoring module, an abutment monitoring module, a deformation monitoring module and a deflection monitoring module which are all in communication connection with the data acquisition unit. The system further comprises an environment monitoring module in communication connection with the serial server, and real-time remote monitoring of the health condition of the bridge can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge monitoring, in particular to a bridge health monitoring system. Background Art

[0002] With the increase in the operating life of bridges and the continuous growth in traffic volume, the pressure on bridge maintenance and management is increasing, and the situation of ensuring the healthy and safe operation of bridge structures is becoming increasingly severe. On the one hand, with the increase in operating life, the performance of bridges is constantly declining. On the other hand, with the improvement of design and construction levels, bridges are developing towards larger spans, lighter weights, and increasingly complex structural forms and functions, which puts higher requirements on daily inspection and maintenance.

[0003] The occurrence of bridge accidents is the superposition of multiple unfavorable factors, especially for bridges over water. Inadequate maintenance and repair during the operation of bridges is an important factor. At the same time, the degree of damage to long-span bridges caused by flood disasters during the flood season is increasing. Therefore, safety monitoring of bridges during operation is an important research direction that requires long-term attention. However, we still have certain gaps in non-destructive monitoring and intelligent monitoring. Traditional detection requires a lot of manpower and material resources, is expensive, and has measurement blind spots. Therefore, it is necessary to combine advanced technologies such as modern sensing and communication networks to intelligently detect and monitor the operation status of bridges, accurately evaluate the damage status of bridges, and focus on the collection, transmission, intelligent monitoring and early warning of different types of bridge data. Utility Model Content

[0004] The utility model provides a bridge health monitoring system.

[0005] The technical solution of this utility model is as follows:

[0006] A bridge health monitoring system includes a work area server, a power supply electrically connected to the work area server, a serial port server communicatively connected to the work area server, a data acquisition unit communicatively connected to the serial port server, and a sensor unit communicatively connected to the data acquisition unit.

[0007] The data acquisition unit includes a network distributed data acquisition instrument, a comprehensive acquisition expansion module and a high-speed bus acquisition module, all of which are connected to the serial port server and the sensor unit for communication.

[0008] The sensor unit includes a hydrological monitoring module, a vibration monitoring module, a pier monitoring module, a deformation monitoring module and a deflection monitoring module, and the hydrological monitoring module, the deformation monitoring module and the deflection monitoring module are all connected to the network distributed data acquisition instrument for communication.

[0009] The pier monitoring module is connected to the comprehensive acquisition expansion module for communication.

[0010] The vibration monitoring module is connected to the high-speed bus acquisition module for communication.

[0011] It also includes an environment monitoring module that is communicatively connected to the serial port server.

[0012] Specifically, the work area server is communicatively connected to the serial port server via a 4G communication line or an optical fiber communication line, wherein the 4G communication line is provided with a gateway and a 4G communication module which are communicatively connected in sequence, and the optical fiber communication line is provided with an optical fiber switch and an optical fiber transceiver which are communicatively connected in sequence, both the gateway and the optical fiber switch are communicatively connected to the serial port server, and both the 4G communication module and the optical fiber transceiver are communicatively connected to the work area server.

[0013] Preferably, the power supply is a UPS power supply.

[0014] Specifically, the hydrological monitoring module includes a radar water level meter and a vibrating string water level meter, both of which are communicatively connected to a network distributed data acquisition instrument. When in use, the radar water level meter is arranged above the water body and on one side of the pier through a supporting structure, and the vibrating string water level meter is arranged in the water body below the bridge.

[0015] Preferably, the environmental monitoring module includes a temperature and humidity sensor and a wind speed sensor, both of which are communicatively connected to the serial port server, and when in use, are arranged in the middle of the bridge span or on the side of the bridge.

[0016] Preferably, the vibration monitoring module includes an acceleration sensor and a velocity sensor, both of which are communicatively connected to the high-speed bus acquisition module. When in use, the acceleration sensor is arranged at the mid-span of the bridge, and the velocity sensor is arranged at the top of the pier.

[0017] Preferably, the pier monitoring module is a plurality of static levels, which are communicatively connected with the comprehensive acquisition expansion module. When in use, the plurality of static levels are respectively arranged on the tops of a plurality of piers to form a closed or open level line.

[0018] Specifically, the deformation monitoring module includes a displacement sensor and a wire displacement meter, both of which are communicatively connected to a network distributed data acquisition instrument. When in use, the wire displacement meter is set at the expansion joint of the bridge, and the displacement sensor is set at one side of the bridge support.

[0019] Preferably, the deflection monitoring module includes a photoelectric deflectometer and several photoelectric targets, all of which are communicatively connected to a network distributed data acquisition device. When in use, the photoelectric deflectometer is set at the centerline position of the top of the pier, and the several photoelectric targets are distributed and set at the centerline position of the lower surface of the bridge and the top of the pier.

[0020] Furthermore, it also includes a display module and an alarm module, both of which are electrically connected to the work area server.

[0021] The beneficial effects of the utility model are:

[0022] (1) The utility model is a bridge health monitoring system. In the non-flood season, the bridge health monitoring system monitors the pier settlement, deformation and vibration of the bridge through the cooperation of multiple sensors and multiple data acquisition modules, thereby realizing real-time remote monitoring of the health status of the bridge. It can timely control the operating status of the bridge, provide targeted suggestions for production units to formulate inspection, maintenance and repair plans, and improve the inspection, maintenance and repair efficiency of the bridge.

[0023] (2) The data collected by the sensor unit is aggregated to the serial port server through the data acquisition unit and transmitted to the work area server through 4G communication and optical fiber communication, ensuring the consistency and integrity of the data, improving the reliability of data transmission, and being able to detect potential faults in a timely manner and issue alarms, thereby improving response speed.

[0024] (3) The UPS power supply can provide temporary power when the power supply is unstable or suddenly interrupted, preventing data loss caused by power interruption, ensuring continuous operation of the system, ensuring the continuity of bridge health monitoring, and improving the reliability and stability of the entire monitoring system. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] By reading the detailed description of the preferred embodiment below, the scheme and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only used to illustrate the preferred embodiment and are not considered to be limiting of the present invention.

[0026] In the attached picture:

[0027] Figure 1 Schematic diagram of the module structure of the bridge health monitoring system in the embodiment;

[0028] Figure 2 A schematic diagram of a bridge structure to which the bridge health monitoring system in the embodiment is applied;

[0029] The components represented by the reference numerals in the figure are:

[0030] 1. Bridge; 2. Expansion joint; 3. Pier; 4. Support. DETAILED DESCRIPTION

[0031] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

[0032] Example

[0033] This embodiment provides a bridge health monitoring system. Figure 1, including a work area server, a power supply electrically connected to the work area server, a serial port server communicatively connected to the work area server, a data acquisition unit communicatively connected to the serial port server, and a sensor unit communicatively connected to the data acquisition unit,

[0034] The data acquisition unit includes a network distributed data acquisition instrument, a comprehensive acquisition expansion module and a high-speed bus acquisition module, all of which are connected to the serial port server and the sensor unit for communication.

[0035] The sensor unit includes a hydrological monitoring module, a vibration monitoring module, a pier monitoring module, a deformation monitoring module and a deflection monitoring module, and the hydrological monitoring module, the deformation monitoring module and the deflection monitoring module are all connected to the network distributed data acquisition instrument for communication.

[0036] The pier monitoring module is connected to the comprehensive acquisition expansion module for communication.

[0037] The vibration monitoring module is connected to the high-speed bus acquisition module for communication.

[0038] It also includes an environment monitoring module that is communicatively connected to the serial port server.

[0039] Specifically, in the present invention, the work area server is the key to realizing intelligent monitoring of the bridge health monitoring system. It is responsible for receiving data from various sensors, processing these data, and sending instructions to various modules connected to it for coordinated control.

[0040] The UPS power supply is electrically connected to the work area server and is used to provide temporary power when the power supply is unstable or suddenly interrupted, to prevent data loss caused by power interruption, and to ensure continuous operation of the system. The UPS power supply includes a rectifier, a battery, and an inverter that are electrically connected in sequence. The inverter is electrically connected to the work area server, wherein the rectifier is used to convert the incoming AC power into DC power, the output end of the rectifier is connected to the input end of the battery to charge the battery, and the output end of the battery is connected to the input end of the inverter to convert the DC power into AC power and transmit it to the work area server. When the power grid fails, the electric energy stored in the battery will be directly transmitted to the work area server for power supply.

[0041] The sensor unit includes a hydrological monitoring module, an environmental monitoring module, a vibration monitoring module, a pier monitoring module, a deformation monitoring module and a deflection monitoring module.

[0042] Among them, the hydrological monitoring module is used to monitor the water level and the flow rate of the water body under the bridge 1. The hydrological monitoring module includes a radar water level meter and a vibrating wire water level meter, both of which are connected to the network distributed data acquisition instrument for communication. The radar water level meter is used to measure the water level and the flow rate of the water body, and the vibrating wire water level meter is used to measure the water level. In the use state, the radar water level meter is set above the water body and is set on one side of the pier 3 through the supporting structure, and the vibrating wire water level meter is set in the water body under the bridge 1. The collected water level data and flow rate data are transmitted to the INV data acquisition instrument.

[0043] The environmental monitoring module is used to monitor the external environment of Bridge 1 and is connected to the serial port server. The environmental monitoring module includes a temperature and humidity sensor and a wind speed sensor. When in use, they are both set in the middle of Bridge 1 or on the side of Bridge 1 and are connected to the serial port server. The temperature and humidity sensor is used to monitor the temperature and humidity data of the environment, and the wind speed sensor is used to monitor the real-time wind speed. The obtained temperature, humidity and wind speed data can be directly transmitted to the serial port server without passing through the data acquisition unit, thereby improving the transmission efficiency.

[0044] The vibration monitoring module is used to monitor the vibration of the bridge 1 and is connected to the high-speed bus acquisition module. The vibration monitoring module includes an acceleration sensor and a velocity sensor, both of which are connected to the high-speed bus acquisition module. In use, the acceleration sensor is set at the mid-span position of the bridge 1, and the velocity sensor is set at the top of the pier 3. The acceleration sensor is used to measure the lateral amplitude and lateral acceleration of the bridge 1. The velocity sensor is used in conjunction with the acceleration sensor to measure the lateral amplitude and lateral acceleration of the top of the pier 3, and the amplitude and acceleration data obtained are transmitted to the high-speed bus acquisition module.

[0045] The pier monitoring module is used to monitor the inclination and settlement of the pier 3, and is connected to the comprehensive acquisition extension module. The pier monitoring module is a number of static levels, which are connected to the comprehensive acquisition extension module in use. Several static levels are respectively set on the top of several piers 3 to form a closed or open level line. The static level is used to measure the settlement and inclination of the pier 3, and the obtained data is transmitted to the comprehensive acquisition extension module.

[0046] The deformation monitoring module is used to monitor the structural deformation of the bridge 1. The deformation monitoring module includes a displacement sensor and a wire displacement meter, both of which are connected to the network distributed data acquisition instrument. In use, the wire displacement meter is set at the expansion joint 2 of the bridge 1 to obtain the displacement data of the expansion joint 2, and the displacement sensor is set at a side position of the support 4 of the bridge 1 to obtain the displacement data of the support 4. The obtained relevant displacement data will be transmitted to the INV data acquisition instrument.

[0047] The deflection monitoring module is used to monitor the deflection and rotation of the bridge 1. The deflection monitoring module includes a photoelectric deflectometer and several photoelectric targets, all of which are connected to the network distributed data acquisition instrument. In use, the photoelectric deflectometer is set at the center line position of the top of the pier 3, and several photoelectric targets are distributed and set at the center line position of the lower surface of the bridge 1 and the top of the pier 3. Among them, several photoelectric targets can also be symmetrically set at the positions on both sides of the center line of the lower surface of the bridge 1, and are connected to the digital I / O interface of the network distributed data acquisition instrument. The photoelectric deflectometer and the photoelectric target are used in combination. The photoelectric deflectometer measures the deflection of the bridge 1 by emitting light and receiving light reflected from the target, and the deflection data obtained is transmitted to the INV data acquisition instrument.

[0048] The data acquisition unit includes an INV data acquisition instrument, a comprehensive acquisition expansion module, and a high-speed bus acquisition module, all of which are connected to the serial port server. The INV data acquisition instrument is used to collect various monitoring data from the sensor unit, and is connected to the serial port server through the Ethernet interface; the high-speed bus acquisition module is used for high-speed data acquisition, which is suitable for vibration monitoring that requires fast response, and is connected to the serial port server through the RS232 or RS485 serial interface; the comprehensive acquisition expansion module provides additional input / output interfaces to increase the scalability of the data acquisition instrument, and is connected to the serial port server through the RS232 or RS485 serial interface.

[0049] The serial port server is used for centralized management and transmission of various sensor data. The serial port server and the work area server are connected through 4G communication lines or optical fiber communication lines. The 4G communication line is provided with a gateway and a 4G communication module that are connected in sequence, and the optical fiber communication line is provided with an optical fiber switch and an optical fiber transceiver that are connected in sequence. The gateway and the optical fiber switch are both connected in communication with the serial port server, and the 4G communication module and the optical fiber transceiver are both connected in communication with the work area server. The serial port server is connected to the gateway through the RJ45 Ethernet interface and to the optical fiber switch through the SPI optical fiber interface. The setting of the serial port server facilitates centralized management and remote monitoring. The 4G communication module provides wireless data transmission capability and transmits the collected sensor data to the work area server through the 4G network; the optical fiber transceiver converts electrical signals into optical signals and transmits data through optical fiber, which is suitable for long-distance, high-speed data transmission requirements. The two communication methods complement each other to ensure the continuity and reliability of data transmission.

[0050] The display module is electrically connected to the work area server and is used to display the health status and monitoring data of the bridge 1 in real time. The display module can be a display screen so that the monitoring personnel can intuitively grasp the operation status of the bridge 1.

[0051] The alarm module is used to give an alarm through sound and light when the monitoring data exceeds the set threshold. The alarm module includes a buzzer and an LED indicator light.

[0052] The utility model is equipped with multiple sensors, integrates the data from different sensors through the data acquisition unit, and transmits them synchronously through the serial port server to ensure the consistency and integrity of the data. Through the two modes of 4G and optical fiber communication, communication redundancy is provided. Even if one of the modes fails, the other can still ensure the continuity of data transmission. Optical fiber communication provides high-speed and large-capacity data transmission, and 4G communication provides remote data access. The combination of the two communication modes ensures the real-time performance of data transmission.

[0053] The utility model allows monitoring personnel to receive and view data in real time at a location far away from the bridge site, perform remote diagnosis of the bridge status, and issue early warnings before potential problems develop into serious failures.

Claims

1. A bridge health monitoring system, characterized in that: It includes a work area server, a power supply electrically connected to the work area server, a serial port server connected to the work area server, a data acquisition unit connected to the serial port server, and a sensor unit connected to the data acquisition unit. The data acquisition unit includes a network distributed data acquisition instrument, a comprehensive acquisition expansion module and a high-speed bus acquisition module, all of which are connected to the serial port server and the sensor unit for communication. The sensor unit includes a hydrological monitoring module, a vibration monitoring module, a pier monitoring module, a deformation monitoring module and a deflection monitoring module, and the hydrological monitoring module, the deformation monitoring module and the deflection monitoring module are all connected to the network distributed data acquisition instrument for communication. The pier monitoring module is connected to the comprehensive acquisition expansion module for communication. The vibration monitoring module is in communication connection with the high-speed bus acquisition module. It also includes an environment monitoring module that is communicatively connected to the serial port server.

2. A bridge health monitoring system according to claim 1, characterized in that: The work area server is communicatively connected to the serial port server via a 4G communication line or an optical fiber communication line, wherein the 4G communication line is provided with a gateway and a 4G communication module which are communicatively connected in sequence, and the optical fiber communication line is provided with an optical fiber switch and an optical fiber transceiver which are communicatively connected in sequence, both the gateway and the optical fiber switch are communicatively connected to the serial port server, and both the 4G communication module and the optical fiber transceiver are communicatively connected to the work area server.

3. A bridge health monitoring system according to claim 1, characterized in that: The power supply is a UPS power supply.

4. A bridge health monitoring system according to claim 1, characterized in that: The hydrological monitoring module comprises a radar water level meter and a vibrating wire water level meter, both of which are connected to the network distributed data acquisition instrument for communication. In a use state, the radar water level meter is arranged above the water body and is arranged on one side of the pier (3) through a supporting structure, and the vibrating wire water level meter is arranged in the water body below the bridge (1).

5. A bridge health monitoring system according to claim 1, characterized in that: The environmental monitoring module comprises a temperature and humidity sensor and a wind speed sensor, both of which are connected to the serial port server for communication, and are arranged in the middle of the span of the bridge (1) or at the side of the bridge (1) when in use.

6. A bridge health monitoring system according to claim 1, characterized in that: The vibration monitoring module comprises an acceleration sensor and a velocity sensor, both of which are in communication connection with the high-speed bus acquisition module. In a use state, the acceleration sensor is arranged at the mid-span position of the bridge (1), and the velocity sensor is arranged at the top position of the pier (3).

7. A bridge health monitoring system according to claim 1, characterized in that: The pier 3 monitoring module is a plurality of static levels, which are in communication connection with the comprehensive acquisition expansion module. When in use, the plurality of static levels are respectively arranged on the top of the plurality of piers (3) to form a closed or open level line.

8. A bridge health monitoring system according to claim 1, characterized in that: The deformation monitoring module comprises a displacement sensor and a wire displacement meter, both of which are connected to a network distributed data acquisition device for communication. In a use state, the wire displacement meter is arranged at the expansion joint (2) of the bridge (1), and the displacement sensor is arranged at a side position of a support (4) of the bridge (1).

9. A bridge health monitoring system according to claim 1, characterized in that: The deflection monitoring module comprises a photoelectric deflectometer and a plurality of photoelectric targets, all of which are communicatively connected to a network distributed data acquisition device. When in use, the photoelectric deflectometer is arranged at the centerline position of the top of the pier (3), and the plurality of photoelectric targets are distributed and arranged at the centerline positions of the lower surface of the bridge (1) and the top of the pier (3).

10. A bridge health monitoring system according to claim 1, characterized in that: It also includes a display module and an alarm module, both of which are electrically connected to the work area server.

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