A monitoring and early warning device that can prevent bridge rollover

Abstract

The present invention discloses a monitoring and early warning device capable of preventing bridge rollover, comprising a collection end, which collects bridge physical data; a collaboration unit, which detects bridge physical data; and an early warning unit, which warns of bridge status; wherein the collection end provides real-time collection of various physical data of the bridge, the collaboration unit provides real-time monitoring of various physical data of the bridge, the early warning unit generates an early warning report based on the collection end and the collaboration unit data, and performs timely bridge early warning, and relates to the technical field of bridge monitoring and early warning. The present invention establishes a monitoring network above the bridge and monitors the bridge and the vehicles traveling above the bridge, so as to monitor the operation status of the bridge (including bridge balance, bridge posture, and bridge load-bearing, etc.) in real time, identify abnormal bridge weighing in the future period, and provide timely alarms and responses to ensure the safe operation of the bridge and avoid the problem of bridge overturning.

Description

Technical Field

[0001] The invention relates to the technical field of bridge monitoring and early warning, and in particular to a monitoring and early warning device capable of preventing a bridge from rolling over. Background Art

[0002] Bridge rollover refers to the overturning of side piers and instability of bridge decks under the influence of wind load, earthquake, vehicle overload or other external factors. As we all know, bridges cross valleys, roads, rivers or other obstacles. They are artificial passages suspended above water or ground. Their reliability and safety are particularly important. In recent years, highway bridge rollover accidents have occurred frequently, which not only cause traffic interruption and congestion, but also bring huge economic losses and casualties. In view of the particularity and complexity of bridges, advanced and reliable monitoring equipment for preventing bridge rollover is set up to respond quickly to potential safety hazards. It can achieve the full integration requirements from detection, alarm, linkage control to elimination of potential safety hazards. The monitoring system predicts the weighing of the bridge according to the monitoring data, providing a reliable and effective reference for various vehicle operation activities on highway bridges, and then ensuring the safety of the bridge by providing the required early danger alarm and damage assessment, thereby greatly enhancing the survivability of the bridge.

[0003] In order to prevent and reduce bridge rollover accidents, the existing technology has taken the following early warning measures:

[0004] Bridge structure design: During the design phase, the design is carried out strictly in accordance with the requirements of relevant bridge design specifications to ensure that the bridge has sufficient stability and wind load resistance.

[0005] Regular inspection and maintenance: Bridges should be inspected and maintained regularly during use, and any abnormalities should be repaired promptly. This includes checking the safety performance of the bridge's foundation, bearings, piers, beams and other structural parts.

[0006] Real-time monitoring system: A bridge deflection monitoring system can be installed to detect the inclination of the bridge through sensors, promptly detect excessive bridge deflection, and issue an early warning.

[0007] Wind speed monitoring system: By installing wind speed monitoring instruments, the wind speed conditions at the bridge location can be monitored in real time, and timely warnings can be issued when the wind speed exceeds a certain threshold.

[0008] Strengthen management and emergency response capabilities: Strengthen the management of bridges, establish sound emergency response and evacuation plans, as well as related training and drills, to improve the ability and efficiency of responding to bridge rollover accidents.

[0009] For example, the Chinese patent with publication number CN202816157U discloses a bridge early warning detection system. The patent specifically discloses "a bridge early warning detection system, including a camera, two sets of infrared laser transceivers and a radar, the two sets of infrared laser transceivers are arranged on one side of the bridge and are arranged parallel to each other, the camera is arranged between the infrared laser transceiver and the bridge, the camera points to the center of the river between the cameras, and the radar is arranged on the bridge pier". The technical solution realizes the "application of infrared communication principles and radar detection in ship detection technology, in addition to accurately detecting the real-time height of the ship and locating the sailing ship, it can also use sound and light (auxiliary LED display screen) to prompt the ship to stop, avoid and change the route, and can record on-site, and promptly notify the management center for remote supervision and processing".

[0010] However, in actual use, this patent can only monitor the speed and navigation conditions of ships sailing under the bridge, but has no monitoring capability for vehicles traveling on the bridge, resulting in the inability to effectively eliminate the risk of vehicles traveling on the bridge and to conduct timely monitoring of the bridge itself.

[0011] Therefore, the Chinese patent with publication number CN114964446A discloses a method, device, equipment and medium for monitoring and warning of dynamic traffic loads on highway bridges. The patent specifically discloses "a method for monitoring and warning of dynamic traffic loads on highway bridges, including: using the non-stop weighing system at the entrance of the highway toll station to obtain the entrance weighing data of the vehicle that is about to enter the section where the bridge is located;" the technical solution realizes "obtaining the real-time driving data of the vehicle in the section where the bridge is located based on the ETC gantry system, estimating the first time the vehicle enters the bridge; based on the entrance weighing data, real-time driving data and the first time of all vehicles entering the section where the bridge is located, estimating the first vehicle load spatial distribution on the bridge within a preset time period; when the first vehicle load spatial distribution exceeds the load range of the bridge, a warning signal is issued in the section where the bridge is located. The present disclosure also provides a device, electronic device and storage medium for monitoring and warning of dynamic traffic loads on highway bridges".

[0012] However, this patent still fails to effectively monitor the bridge itself during actual use. Although it achieves timely and effective monitoring of vehicles on the bridge, it does not disclose a specific monitoring method for the posture of the bridge itself, resulting in insufficient monitoring means for the bridge itself. The improvement is not thorough and there is still room for improvement. Summary of the invention

[0013] The purpose of the present invention is to provide a monitoring and early warning device that can prevent bridge rollover. The purpose of the device is to monitor the operating status of the bridge in real time, identify abnormal bridge weighing conditions in future time periods, and provide timely alarms and responses to ensure the safe operation of the bridge. The bridge monitoring equipment uses an automated system to collect sensor data, and combines data processing and analysis technology to monitor the status and performance of the bridge in real time, thereby intervening in abnormal conditions in a timely manner to ensure the safe operation of vehicles.

[0014] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a monitoring and early warning device capable of preventing bridge rollover, comprising a collection end, a collaboration unit and an early warning unit, wherein the collection end collects bridge physical data; the collaboration unit detects bridge physical data; the early warning unit warns of bridge status;

[0015] The collection end is used for real-time collection of various physical data of the bridge, the collaboration unit is used for real-time monitoring of various physical data of the bridge, and the early warning unit generates an early warning report based on the data of the collection end and the collaboration unit, and issues timely early warning for the bridge.

[0016] The working principle of the present invention is as follows: by establishing a monitoring network above the bridge and monitoring the bridge and the vehicles traveling above the bridge, the application can monitor the operating status of the bridge (including bridge balance, bridge posture, and bridge load-bearing, etc.) in real time, identify abnormal bridge weighing conditions in future time periods, and provide timely alarms and responses to ensure the safe operation of the bridge and avoid the problem of bridge overturning; and, the bridge monitoring equipment collects sensor data through the use of an automated system, and combines data processing and analysis technology to monitor the status and performance of the bridge in real time, thereby intervening in abnormal conditions in a timely manner to ensure the safe operation of vehicles.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] As a further solution of the present invention: the collaborative unit includes a sensor unit, a data acquisition and control unit, a data transmission unit, a data processing and management unit, and an active safety warning unit. The data acquisition and control unit collects the bridge data collected by the sensor unit, the data processing and management unit analyzes and manages the bridge data in the data acquisition and control unit, and the active safety warning unit performs active warning based on the bridge data in the data processing and management unit. The entire process is carried out through the transmission of various data through the data transmission unit. The sensor unit, the data acquisition and control unit, the data transmission unit, the data processing and management unit, and the active safety warning unit cooperate to realize bridge safety monitoring and bridge safety warning, and timely alarms are issued to maintain the safety of the bridge.

[0019] As a further solution of the present invention: the sensor unit includes a laser speed sensor, a dynamic weighing sensor, a wireless sensor and a video identification vehicle module. The laser speed sensor is used to measure the speed of objects on the bridge deck, the dynamic weighing sensor is used to measure the weight of objects on the bridge deck, and the video identification vehicle module is used to identify and measure large passenger and freight vehicles on the bridge deck. The wireless sensor is used for the optical speed sensor and the dynamic weighing sensor for the transmission of measurement data in the video identification vehicle module. The sensor unit can realize speed monitoring, vehicle type identification, and dynamic weighing of vehicles that are about to enter the bridge. The measurement data is comprehensive, and the vehicles entering the bridge can be comprehensively detected and diagnosed, and can provide overall comprehensive data information for the overall operation status of the bridge. In addition, the installation and use period of this equipment is long, and the timeliness is strong. It can provide instant information after a major accident to help rescue.

[0020] As a further solution of the present invention: the data acquisition and control unit includes hardware and software. The data acquisition and control unit converts the signal of the sensor unit into identifiable physical data through software. The data acquisition and control unit supplements and improves the physical data through hardware. Data acquisition can convert the analog signals (voltage, current, light signal, etc.) obtained by the sensor that have no physical meaning into digital signals, thereby realizing specific quantification and guidance of bridge detection.

[0021] As a further solution of the present invention: the hardware also includes collection stations, which are arranged according to the spatial position of the bridge and implement complementary collection of bridge data. The collection stations can perform safety monitoring of the bridge at equal intervals to reduce blank areas and blind spots in bridge detection.

[0022] As a further solution of the present invention: the data processing and management unit includes a data processing unit and a data management unit. The data processing unit stimulates the data acquisition and control unit to work according to the internally set judgment conditions, and uses the sensor unit to collect data. The data management unit provides automatic data processing. The data processing unit can be used to judge the status of vehicles traveling on the bridge (such as weighing, speed) to achieve automated management. The data management unit can be used to automatically summarize and count the data and improve the database.

[0023] As a further solution of the present invention: the active safety warning unit includes an active safety warning module and a power supply module. The active safety warning module uses communication technology to receive the warning instructions of the data processing and management unit, and takes active warning and protection measures. The power supply module normally supplies power to the active safety warning module, receives the warning instructions through the wireless transmission module, and takes active luminous sign measures to realize real-time monitoring and warning functions.

[0024] As a further solution of the present invention: it also includes a monitoring center, which is networked with the collection stations for operation. The monitoring center can issue instructions to the collection stations, and the collection stations can also transmit data to the monitoring center, thereby realizing one-to-many comprehensive management.

[0025] As a further solution of the present invention: the data transmission unit has a built-in transmission network, including

[0026] The sensor unit is connected to the transmission network of the data acquisition and control unit, the data processing and management unit is connected to the transmission network of the data acquisition and control unit, the data processing and management unit is connected to the transmission network of the active safety warning unit, and the data transmission unit's own data transmission network. Through each transmission network, efficient communication between the units can be guaranteed.

[0027] As a further solution of the present invention: the communication technology includes edge computing technology, Internet of Things technology and wireless communication technology. Through edge computing, efficient data transmission capability near the device end can be achieved through Internet of Things technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of a system in an embodiment of the present invention;

[0029] Figure 2 A schematic diagram of a poor condition of a bridge in an embodiment of the present invention;

[0030] Figure 3 is a flow chart of a data processing unit in an embodiment of the present invention;

[0031] Figure 4 This is a front view of a vehicle passing through a bridge in an embodiment of the present invention;

[0032] Figure 5 This is a front view of a bridge pier in an embodiment of the present invention;

[0033] Figure 6 1 is a top view of the bridge deck in an embodiment of the present invention. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that, for those skilled in the art, the specific meanings of the above terms in the present invention can be understood in specific situations. The following describes an embodiment of the present invention based on its overall structure.

[0036] In an embodiment of the present invention, a monitoring and early warning device capable of preventing a bridge from rolling over includes a collection end, wherein the collection end collects physical data of the bridge;

[0037] A collaboration unit, the collaboration unit detecting physical data of the bridge; and

[0038] An early warning unit, the early warning unit warning of a bridge status;

[0039] Among them, the collection end is used for real-time collection of various physical data of the bridge, the collaboration unit is used for real-time monitoring of various physical data of the bridge, and the early warning unit generates an early warning report based on the data of the collection end and the collaboration unit, and conducts timely early warning of the bridge. This equipment can perform real-time dynamic monitoring, and effectively prevent bridge rollover during continuous monitoring, avoiding the problem of inaccurate monitoring caused by subjective naked eye monitoring by personnel.

[0040] In the prior art, traditional bridge inspection technology evaluates the safety status of bridge structures through manual visual inspection or information obtained by portable instruments, such as Figure 2 and Figure 4 As shown, although the stress performance of the upper and lower structures of the single-column pier bridge can meet the requirements of the bridge design specifications, due to the single-point support of the pier's lateral support system, the lateral anti-overturning resistance of the structure is very unstable under the action of eccentric load, resulting in insufficient safety reserve for the overall anti-overturning stability of the bridge. When an overloaded vehicle passes through with eccentric load, there are safety hazards such as the overall rollover of the bridge and damage to the piers. Therefore, this application designs a monitoring and early warning device that can prevent bridge rollovers. The acquisition end collects bridge physical data and the collaborative unit detects bridge physical data. The early warning unit makes active early warning reports, intervenes in adverse bridge conditions in a timely manner, and effectively ensures bridge safety.

[0041] As other embodiments of the present invention: the collaborative unit includes a sensor unit, a data acquisition and control unit, a data transmission unit, a data processing and management unit and an active safety warning unit. The data acquisition and control unit collects the bridge data collected by the sensor unit, the data processing and management unit analyzes and manages the bridge data in the data acquisition and control unit, and the active safety warning unit performs active warning according to the bridge data in the data processing and management unit. The entire process is carried out through the data transmission unit to transmit various data. The device can realize speed monitoring, vehicle type identification, and dynamic weighing of vehicles about to enter the bridge. The measurement data is comprehensive, and the vehicles entering the bridge can be comprehensively detected and diagnosed. It can provide overall comprehensive data information for the overall operation status of the bridge, and timely warning can be given before an accident is about to occur on the bridge. In addition, the installation and use period of the device is long, and the timeliness is strong. It can provide instant information after a major accident to help rescue personnel.

[0042] The sensor unit includes a laser speed sensor, a dynamic weighing sensor, a wireless sensor and a video recognition vehicle module. The laser speed sensor is used to measure the speed of objects on the bridge deck, the dynamic weighing sensor is used to measure the weight of objects on the bridge deck, the video recognition vehicle module is used to identify and measure large passenger and freight vehicles on the bridge deck, and the wireless sensor is used for the transmission of measurement data in the optical speed sensor and the dynamic weighing sensor in the video recognition vehicle module.

[0043] See also Figure 1 and Figure 3 The sensor unit needs to integrate laser speed sensors, dynamic weighing sensors, video recognition vehicle modules and wireless sensors to carry out corresponding coordinated detection work.

[0044] Laser speed sensor: It is a high-precision measuring instrument developed using the laser Doppler effect. It has the characteristics of high linear accuracy, non-contact measurement, and fast response speed. It can easily realize real-time measurement of the speed and length information of two-dimensional and three-dimensional objects. In this application, it can be used to identify the type and speed of each vehicle on the bridge.

[0045] Dynamic weighing sensor: It can generally automatically weigh vehicles passing through the bridge at a speed of 5km / h-120km / h. In this application, it can be used to identify the weight of each vehicle traveling on the bridge.

[0046] Video recognition vehicle module: Identify heavy trucks through video and mark the identified heavy trucks.

[0047] Wireless sensor: It has an internal integrated data acquisition module and a wireless transmission module, and can transmit digital quantities to the outside (as one of the carriers of the data transmission unit, it can transmit the physical data captured by the sensor unit to the data acquisition and control unit, and serve as the basic data for the subsequent data processing and management unit and the active safety warning unit).

[0048] As other embodiments of the present invention: the data acquisition and control unit includes hardware and software, the data acquisition and control unit converts the signal of the sensor unit into identifiable physical data through software, and the data acquisition and control unit supplements and improves the physical data through hardware; the hardware also includes a collection station, and the collection station is arranged according to the spatial position of the bridge and implements the supplementary collection of bridge data.

[0049] See also Figure 3 , Figure 5 and Figure 6 Specifically, data acquisition can convert analog signals (voltage, current, and light signals, etc.) acquired by sensors without any physical meaning into digital signals, and at the same time, convert signals into data with physical meaning, such as bridge strain, bridge vibration, etc. Different sensors use different acquisition devices for data acquisition. This part requires the design of the topological relationship between sensors and acquisition devices for implementation, such as

[0050] Each sensor cooperates and serves as a collection of action points in a topological relationship. Each action point in the collection can be arranged and combined according to user needs to extract different data combinations (either single value, two values ​​or full value)

[0051] When taking a single value: you can take any value from the laser speed sensor, dynamic weighing sensor, or video recognition vehicle module as needed;

[0052] When taking a combination of two values: the values ​​can be combined in the laser speed sensor + dynamic weighing sensor, laser speed sensor + video recognition vehicle module, dynamic weighing sensor + video recognition vehicle module;

[0053] When taking full value: take full value in laser speed sensor, dynamic weighing sensor, and video recognition vehicle module;

[0054] The above-mentioned value does not include a certain parameter inside the sensor, but may be a collection of multiple parameters.

[0055] In addition, the control of the collection behavior, including diagnosis, collection frequency adjustment, clock synchronization design, major vehicle identification, and weighing sensor difference threshold are all achieved through the collection equipment.

[0056] As other embodiments of the present invention: the data processing and management unit includes a data processing unit and a data management unit. The data processing unit stimulates the data acquisition and control unit to work according to the internally set judgment conditions and uses the sensor unit to collect data. The data management unit provides automatic data processing.

[0057] The data processing unit mainly includes: multi-condition trigger sampling parameters including trigger logic and trigger value settings for each channel, which can be set here according to the needs of the user. Trigger logic is to set the trigger relationship between each trigger channel:

[0058] "Or" means that as long as one of the set trigger channels reaches the trigger threshold, trigger sampling will be performed until the set time length;

[0059] “AND” means that all the set trigger channels must reach the trigger threshold before trigger sampling is performed;

[0060] Specifically, Figure 3 The process in the video is used to make data judgments. When the video recognizes that there are ≥3 heavy trucks on a single side of the bridge road, and the dynamic weighing difference on both sides exceeds 50 tons (the threshold range can be adjusted according to the specific weighing capacity of the bridge), the alarm device is triggered, and there may be a safety hazard that may cause the bridge to roll over.

[0061] The data management unit mainly includes: data processing that can be automatically implemented, such as maximum value statistics, spectrum conversion, vehicle speed statistics, and then classifying and storing the statistical data, recording and expanding the database when the same / same model vehicle passes by next time, helping to increase the processing threshold range of the data processing unit and improve the accuracy of data processing.

[0062] As another embodiment of the present invention: the active safety warning unit includes an active safety warning module and a power supply module, the active safety warning module uses communication technology to receive the warning instruction of the data processing and management unit, and takes active warning and protection measures, and the power supply module normally supplies the active safety warning module;

[0063] The active safety warning unit also includes a monitoring center, which is networked with the collection station; the active safety warning unit adopts edge computing, Internet of Things technology and wireless communication technology, receives warning instructions through a wireless transmission module, and takes active luminous sign measures to realize real-time monitoring and warning functions.

[0064] As another embodiment of the present invention: the data transmission unit has a built-in transmission network, including

[0065] ① The transmission network from the sensor to the DAU (collection station) adopts a local transmission network (sensor unit to collection unit), that is, the transmission network connecting the sensor unit to the data collection and control unit;

[0066] ② 5G wireless network transmission is used from DAU (collection station) to bridge switch (collection unit to transmission unit), that is, the data processing and management unit is connected to the transmission network of the data collection and control unit;

[0067] ③ 5G wireless network transmission is used from the bridgehead switch to the monitoring center switch (data unit to active warning unit), that is, the transmission network of the data processing and management unit connected to the active safety warning unit; and

[0068] ④ The wiring of the monitoring center, that is, the data transmission network of the data transmission unit itself.

[0069] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A monitoring and early warning device capable of preventing bridge rollover, characterized in that: It includes a collection end, wherein the collection end collects physical data of the bridge; A collaboration unit, wherein the collaboration unit detects bridge physical data and provides real-time monitoring of various types of bridge physical data; the collaboration unit includes a sensor unit, a data acquisition and control unit, a data transmission unit, a data processing and management unit, and an active safety warning unit. The data acquisition and control unit collects bridge data collected by the sensor unit, the data processing and management unit analyzes and manages the bridge data in the data acquisition and control unit, and the active safety warning unit performs active warning according to the bridge data in the data processing and management unit. The data transmission unit is used to transmit various types of data in the whole process; wherein: The sensor unit includes a laser speed sensor, a dynamic weighing sensor, a wireless sensor and a video recognition vehicle module. The laser speed sensor is used to measure the speed of objects on the bridge deck, the dynamic weighing sensor is used to measure the weight of objects on the bridge deck, the video recognition vehicle module is used to identify and measure large passenger and freight vehicles on the bridge deck, and the wireless sensor is used for the transmission of measurement data in the optical speed sensor and the dynamic weighing sensor in the video recognition vehicle module; the data acquisition and control unit includes hardware and software. The data acquisition and control unit converts the signal of the sensor unit into recognizable physical data through software. Different sensors in the sensor unit use different acquisition devices for data acquisition. This part designs the topological relationship between the sensor and the acquisition device for implementation. Each sensor coordinates and cooperates and serves as a collection of action points in the topological relationship. Each action point in the collection can be arranged and combined according to user needs to extract a single value, two values ​​or full value data combination method: When taking a single value: you can take any value from the laser speed sensor, dynamic weighing sensor, or video recognition vehicle module as required; When taking a combination of two values: the values ​​can be combined in the laser speed sensor + dynamic weighing sensor, laser speed sensor + video recognition vehicle module, dynamic weighing sensor + video recognition vehicle module; When taking full value: taking full value in laser speed sensor, dynamic weighing sensor, and video recognition vehicle module; and the control of collection behavior, including diagnosis, collection frequency adjustment, clock synchronization design, major vehicle identification, and weighing sensor difference threshold, are all realized through collection equipment; the data collection and control unit compensates and improves physical data through hardware; the data processing and management unit includes a data processing unit and a data management unit, the data processing unit stimulates the data collection and control unit to work according to the internally set judgment conditions, and uses the sensor unit to collect data, and the data management unit is used for automatic data processing; as well as An early warning unit, which warns of the bridge status; the early warning unit generates an early warning report based on the data from the collection end and the collaboration unit, and provides timely bridge warnings.

2. The monitoring and early warning device capable of preventing bridge rollover according to claim 1 is characterized in that: The hardware also includes collection stations, which are evenly arranged according to the spatial positions of the bridges and perform supplementary collection of bridge data.

3. The monitoring and early warning device capable of preventing bridge rollover according to claim 1 is characterized in that: The active safety warning unit includes an active safety warning module and a power supply module. The active safety warning module uses communication technology to receive warning instructions from the data processing and management unit and take active warning and protection measures. The power supply module normally supplies power to the active safety warning module.

4. The monitoring and early warning device capable of preventing bridge rollover according to claim 1 is characterized in that: It also includes a monitoring center, which is networked and operated with the collection station.

5. The monitoring and early warning device capable of preventing bridge rollover according to claim 1 is characterized in that: The data transmission unit has a built-in transmission network, including a transmission network connecting the sensor unit to the data acquisition and control unit, a transmission network connecting the data processing and management unit to the data acquisition and control unit, a transmission network connecting the data processing and management unit to the active safety warning unit, and a transmission network for the data transmission unit's own data.

6. The monitoring and early warning device capable of preventing bridge rollover according to claim 3 is characterized in that: The communication technologies include edge computing technology, Internet of Things technology and wireless communication technology.

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