CN114923648A - A bridge collision monitoring system device - Google Patents

Abstract

The invention discloses a bridge collision monitoring system device which comprises an on-site monitoring subsystem, a public network transmission subsystem, a platform layer and an application layer, wherein the on-site monitoring subsystem consists of intelligent monitoring nodes and edge gateway nodes, a plurality of intelligent monitoring nodes are arranged at key positions of piers or bridges as required, and bridge collision events which possibly occur are monitored in real time in an all-weather manner. According to the invention, a self-learning intelligent monitoring algorithm is adopted, so that the influence of factors such as installation difference, environment and vehicle load is automatically eliminated, and the missing report rate and the false report rate are effectively reduced; by adopting the intelligent edge gateway technology, the collision monitoring can be carried out on the on-site side, and the data flow consumption and the background pressure are effectively reduced; by adopting the wireless ad hoc network and anti-interference communication technology, the installation is extremely simple and convenient, the field debugging is not needed, and the installation can be carried out by common engineers or workers; the weak structure signal monitoring and on-line calibration and ultra-low power consumption design technology are adopted, and the working time of the device is greatly prolonged.

Description

A bridge collision monitoring system device

technical field

The invention relates to the technical field of bridge health monitoring, in particular to a bridge collision monitoring system device.

Background technique

As a key node of highway traffic, the safety status and carrying capacity of bridges largely determine the safety status of highway traffic and the choice of routes for special vehicles. my country's water transportation has developed rapidly, the density of navigation has increased sharply, and the tonnage of ships has also increased. Significant increase, the risk of ship-bridge collision is increasing day by day, and incidents of navigable river bridges being hit by ships frequently occur. Once a ship-bridge collision accident occurs, it may cause serious damage to the bridge, collapse of the waterway, environmental pollution, loss of life and property, etc. consequences, resulting in huge economic losses. Therefore, it is necessary to monitor the risk of the bridge being hit by ships.

However, limited by factors such as technical cost and recognition accuracy, there is currently no mature bridge collision monitoring product on the market. The difficulties of this technology are mainly reflected in: 1. The existing ship collision monitoring needs to deploy collision monitoring equipment on the piers and box girder; most of the existing bridges do not have a complete power supply system, and no installation and maintenance channels are reserved in advance. The wired power supply and wired transmission form used by the monitoring equipment have great limitations; 2. Due to the complex and changeable bridge structure and field environment, the ship collision monitoring equipment deployed on site may fail due to various problems, cannot perform self-repair, and is nearby. 3. Also due to the complex and changeable bridge structure and field environment, the ship collision monitoring method must be able to eliminate the influence of factors such as the environment and vehicle load, so as to achieve low false negatives and low false positives . Therefore, in order to realize an effective bridge collision monitoring system, it is necessary to focus on solving these technical difficulties.

SUMMARY OF THE INVENTION

Based on the technical problems existing in the background art, the present invention proposes a bridge collision monitoring system device.

A bridge collision monitoring system device proposed by the present invention includes an on-site monitoring subsystem, a public network transmission subsystem, a platform layer and an application layer. The on-site monitoring subsystem is composed of intelligent monitoring nodes and edge gateway nodes. Deploy multiple intelligent monitoring nodes as needed at key locations of the bridge to monitor possible bridge collision events in real time around the clock. The edge gateway nodes are deployed at appropriate positions on the side of the bridge and can be used to aggregate information from intelligent monitoring nodes within the communication range. Edge gateway nodes have The video acquisition function can trigger the video acquisition function according to the monitoring information of the intelligent monitoring node, and collect evidence for the collision event. The gateway node can automatically establish association and communication with all monitoring nodes within the communication range. The public network transmission subsystem adopts 4G mobile communication technology, the public network transmission subsystem is integrated with the edge gateway node to form an intelligent edge gateway. Various types of data are stored and analyzed to provide the required support for the application layer, which includes various applications that the system can present to end users, mainly including real-time alarms, video forensics, and damage analysis.

Preferably, the intelligent monitoring node uses battery power supply and wireless communication to meet the needs of large-scale deployment.

Preferably, the edge gateway node will use wired power supply or wind-solar hybrid power supply.

Preferably, the intelligent monitoring node and the edge gateway node are in the form of an ad hoc network, and the edge gateway node can automatically establish association and communication with all monitoring nodes within the communication range.

Preferably, the public network transmission subsystem adopts a method of video capture local buffering and collision monitoring to trigger transmission, and the background of the public network transmission subsystem can call live video data in real time through an intelligent edge gateway.

Preferably, the application layer is combined with the on-site monitoring subsystem, and the impact of the collision on the bridge structure is analyzed by using the high-resolution signals obtained during the collision.

Preferably, the application layer specifically includes a real-time alarm in the form of short message, WeChat, and email after a collision occurs, video data when the collision occurs, and necessary user and device management functions.

Preferably, the platform layer includes a cloud server and an algorithm simulation library.

In the present invention, the beneficial effects of the bridge collision monitoring system device are as follows:

1) The self-learning intelligent monitoring algorithm is adopted to automatically eliminate the influence of factors such as installation differences, environment and vehicle load, and effectively reduce the false alarm rate and false alarm rate;

2) Using intelligent edge gateway technology, collision monitoring can be performed on the field side, effectively reducing data traffic consumption and background pressure;

3) Using wireless ad hoc network and anti-jamming communication technology, the installation is extremely simple, and it can be installed by ordinary engineers or workers without on-site debugging;

4) Using weak structural signal monitoring and online calibration and ultra-low power consumption design technology, the working time of the device is greatly improved.

Description of drawings

FIG. 1 is a structural diagram of a bridge collision monitoring system device proposed by the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.

Referring to FIG. 1, a bridge collision monitoring system device includes an on-site monitoring subsystem, a public network transmission subsystem, a platform layer and an application layer. The on-site monitoring subsystem is composed of intelligent monitoring nodes and edge gateway nodes. Deploy multiple intelligent monitoring nodes as needed at key locations of the bridge to monitor possible bridge collision events in real time around the clock. The edge gateway nodes are deployed at appropriate positions on the side of the bridge and can be used to aggregate information from intelligent monitoring nodes within the communication range. Edge gateway nodes have The video acquisition function can trigger the video acquisition function according to the monitoring information of the intelligent monitoring node, and collect evidence for the collision event. The gateway node can automatically establish association and communication with all monitoring nodes within the communication range. The public network transmission subsystem adopts 4G mobile communication technology, the public network transmission subsystem is integrated with the edge gateway node to form an intelligent edge gateway. Various types of data are stored and analyzed to provide the required support for the application layer, which includes various applications that the system can present to end users, mainly including real-time alarms, video forensics, and damage analysis.

In the present invention, the intelligent monitoring node uses battery power supply and wireless communication to meet the needs of large-scale deployment.

In the present invention, the edge gateway node will adopt wired power supply or wind-solar hybrid power supply mode.

In the present invention, the intelligent monitoring node and the edge gateway node are in the form of an ad hoc network, and the edge gateway node can automatically establish association and communication with all monitoring nodes within the communication range.

In the present invention, the public network transmission subsystem adopts the mode of video capture local buffering and collision monitoring to trigger transmission, and the background of the public network transmission subsystem can call live video data in real time through the intelligent edge gateway.

In the present invention, the application layer is combined with the on-site monitoring subsystem, and the impact of the collision on the bridge structure is analyzed by using the high-resolution signal obtained during the collision.

In the present invention, the application layer specifically includes real-time alarm in the form of short message, WeChat, and email after the collision occurs, video data when the collision occurs, and necessary user and equipment management functions.

In the present invention, the platform layer includes a cloud server and an algorithm simulation library.

Example

The present invention takes a bridge in Wuhu City as an example to discuss the implementation example of the present invention.

1) It is judged that the bridge is a multi-span continuous girder bridge, and the three middle spans are navigation holes, so it is necessary to install ship collision monitoring equipment.

2) Install an acceleration sensor at the top of the bridge pier that is vulnerable to impact to capture the structural vibration signal.

3) A camera is installed on the top of the bottom cover beam of the main girder, and the camera can cover the position where the ship may collide.

4) Install the intelligent gateway device on the structure near the installation position of the camera and the acceleration sensor.

5) Complete related equipment debugging, network transmission connection debugging, etc. Make sure the unit is functioning properly.

In the present invention, the acceleration sensor installed at the corresponding position of the bridge structure can acquire the vibration signal of the bridge in real time, and transmit the signal to the low-power consumption monitoring node installed on the nearby structure. The monitoring node can automatically identify the collision monitoring direction to collect vibration data, and automatically determine whether a collision event occurs through edge data analysis. And the captured acceleration signal and live video are transmitted to the intelligent gateway through the micro-power wireless module. Then the data of monitoring nodes and cameras collected by the intelligent gateway is uploaded to the "cloud" platform in real time through the 4G/5G public network. The "cloud" platform will store and analyze all kinds of data generated by the front-end monitoring system. Finally, various applications are presented to users at the application layer. Including real-time alarm by SMS, WeChat, email, etc. after collision, saving video data when collision occurs, and necessary user and device management functions.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. The equivalent replacement or change of the inventive concept thereof shall be included within the protection scope of the present invention.

Claims (8)

1. a bridge collision monitoring system device, is characterized in that, comprises on-site monitoring subsystem, public network transmission subsystem, platform layer and application layer, described on-site monitoring subsystem is made up of intelligent monitoring node and edge gateway node, in bridge pier Or arrange multiple intelligent monitoring nodes at key positions of the bridge as needed to monitor possible bridge collision events in real time around the clock. The edge gateway nodes are deployed at suitable positions on the side of the bridge and can be used to aggregate the information of intelligent monitoring nodes within the communication range. The edge gateway The node has the video acquisition function, which can trigger the video acquisition function according to the monitoring information of the intelligent monitoring node, and collect evidence for the collision event. The gateway node can automatically establish association and communication with all monitoring nodes within the communication range. The system adopts 4G mobile communication technology. The public network transmission subsystem is integrated with the edge gateway node to form an intelligent edge gateway. The platform layer is to be built and tested with a commercial cloud computing platform, and the platform layer will monitor the on-site monitoring subsystem. The various types of data generated are stored and analyzed to provide the required support for the application layer, which includes various applications that the system can present to end users, mainly including real-time alarms, video forensics, and damage analysis. 2 . The bridge collision monitoring system device according to claim 1 , wherein the intelligent monitoring node uses battery power supply and wireless communication to meet the needs of large-scale deployment. 3 . 3 . The bridge collision monitoring system device according to claim 1 , wherein the edge gateway node adopts a wired power supply or a wind-solar hybrid power supply mode. 4 . 4. A kind of bridge collision monitoring system device according to claim 1, is characterized in that, described intelligent monitoring node and edge gateway node adopts ad hoc network form, and edge gateway node can automatically establish with all monitoring nodes within the communication range Association and Communication. 5. A bridge collision monitoring system device according to claim 1, characterized in that, the public network transmission subsystem adopts the mode of video capture local buffering and collision monitoring triggering transmission, and the public network transmission subsystem background can pass through. The intelligent edge gateway calls live video data in real time. 6. A bridge collision monitoring system device according to claim 1, wherein the application layer is combined with the on-site monitoring subsystem, and the impact of the collision on the bridge structure is analyzed by using the high-resolution signal obtained during the collision . 7. A kind of bridge collision monitoring system device according to claim 1, is characterized in that, described application layer specifically comprises after the collision occurs with short message, WeChat, mail mode real-time alarm, saves the video data when collision occurs and necessary. User and device management capabilities. 8 . The bridge collision monitoring system device according to claim 1 , wherein the platform layer comprises a cloud server and an algorithm simulation library. 9 .

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