Bridge dynamic load monitoring system and method

Abstract

The application discloses a bridge dynamic load monitoring system and method, comprising: a weighing device at a bridge head, a vehicle separation device and a vibration sensor in a plurality of detection areas on the bridge, and a data processing device; the vehicle separation device and the vibration sensor are arranged on the driving-in side of each detection area; the vehicle separation device generates a vehicle separation signal; the vibration sensor acquires target vibration information of a vehicle according to the vehicle separation signal; when the vehicle enters a first detection area, the data processing device binds vehicle weight information and the target vibration information; when the vehicle enters other detection areas, the target vibration signal is matched with a vibration signal of a last detection area to determine vehicle weight information corresponding to the target vibration signal; and the load of the detection area is determined according to the vehicle weight information of the vehicle in the detection area. Through the application, the technical problem of low stability and high installation cost of a method for determining a bridge dynamic load by using a camera and a weighing device in the related art is solved.

Description

Technical Field

[0001] This application relates to the field of vehicle identification, and more specifically, to a bridge dynamic load monitoring system and method. Background Technology

[0002] To reduce the safety hazards posed by overloaded freight vehicles to bridges and prevent bridge damage or collapse due to overloaded vehicles, it is necessary to monitor the health status of bridges in real time. This would allow for timely feedback when abnormal bridge conditions are detected, such as excessive load, thereby ensuring bridge safety.

[0003] The methods used in related technologies for monitoring the dynamic load on bridges typically involve deploying multiple cameras along the bridge to acquire traffic flow video information covering the entire bridge surface. This video is then used to track vehicle positions, and vehicles are weighed before crossing the bridge to determine the bridge load based on their weight and position. However, these vehicle information detection methods suffer from several drawbacks. The need for multiple cameras to collectively acquire vehicle location data makes accurate vehicle location determination difficult when influenced by external environmental factors or when vehicles are obstructed. Furthermore, deploying these cameras is costly. Summary of the Invention

[0004] This application provides a bridge dynamic load monitoring system and method to at least solve the technical problems of low stability and high installation cost of the method for determining bridge dynamic load using cameras and weighing equipment in related technologies.

[0005] According to one aspect of the embodiments of this application, a bridge dynamic load monitoring system is provided, comprising: a weighing device located in a weighing area at the bridgehead, acquisition devices located in multiple detection areas on the bridge, and a data processing device; a set of acquisition devices is provided on the vehicle entry side of each detection area, the acquisition devices including a vehicle separation device and a vibration sensor; the weighing device is used to acquire vehicle weight information when a vehicle passes through the weighing area; the vehicle separation device is used to separate vehicles entering the detection area and generate a vehicle separation signal; the vibration sensor is used to acquire target vibration information of the vehicles entering the detection area based on the vehicle separation signal, wherein the target vibration information includes the vehicle vibration signal and the identification information of the detection area; and the data processing device. Electrically connected to both a weighing device and a vibration sensor, the system is used to: bind vehicle weight information obtained from the weighing device with target vibration information obtained from the vibration sensor when a vehicle enters the first detection zone within the lane; match the target vibration signal in the current detection zone with the vibration signal in the previous detection zone based on the identification information to determine the vehicle weight information corresponding to the target vibration signal; and determine the load of the current detection zone based on the vehicle weight information of the vehicle entering the current detection zone and the vehicle weight information of the vehicle entering the next detection zone.

[0006] Optionally, the detection area is divided according to the lanes and expansion joints on the bridge; the vehicle separation device and vibration sensor are set in the expansion joint on the vehicle-entry side of the detection area.

[0007] Optionally, multiple weighing devices are installed in the weighing area, with each weighing device corresponding to a lane.

[0008] Optionally, the distance between the weighing device and the first expansion joint in the lane is less than a preset value.

[0009] Optionally, it also includes a data monitoring center connected to the data processing device, used to receive the load of each detection area and generate alarm information when the load in a detection area exceeds a preset load limit.

[0010] Optionally, the data processing device is also used to filter and retain the vibration signal corresponding to the maximum amplitude when the vibration signals of the vehicle collected by the vibration sensors in different detection areas have the same phase but different amplitudes.

[0011] According to another aspect of the embodiments of this application, a method for monitoring dynamic loads on a bridge is also provided, comprising: when a vehicle passes a weighing device in a weighing area at the bridgehead, acquiring vehicle weight information through the weighing device; after the vehicle enters a lane on the bridge, determining whether a vehicle has entered based on a vehicle separation device in each detection area, and acquiring target vibration information of the vehicle through a vibration sensor in the detection area; wherein the target vibration information includes the vehicle's vibration signal and the identification information of the detection area; when the vehicle enters the first detection area, binding the vehicle weight information acquired from the weighing device with the target vibration information acquired from the vibration sensor; when the vehicle enters other detection areas besides the first detection area, matching the target vibration signal in the current detection area with the vibration signal in the previous detection area according to the identification information to determine the vehicle weight information corresponding to the target vibration signal; and when the vehicle enters other detection areas besides the last detection area, determining the load of the current detection area based on the vehicle weight information of the vehicle entering the current detection area and the vehicle weight information of the vehicle entering the next detection area of ​​the current detection area.

[0012] Optionally, the target vibration signal in the current detection area is matched with the vibration signal in the previous detection area based on the identification information to determine the vehicle weight information corresponding to the target vibration signal. This includes: when the vehicle has completely entered the current detection area, acquiring the target vibration information of the current detection area and extracting the feature value of the target vibration signal; comparing the feature value of the target signal in the current detection area with the feature values ​​of multiple target vibration signals in the previous detection area; and when the similarity between the feature value of the target vibration signal in the current detection area and the feature value of a target vibration signal in the previous detection area is greater than a preset threshold, determining the vehicle weight information corresponding to the target vibration signal in the current detection area based on the vehicle weight information corresponding to the target vibration signal in the previous detection area, and storing it.

[0013] Optionally, matching the target vibration signal in the current detection area with the vibration signal in the previous detection area based on the identification information further includes: determining the target vibration signal of the (N-1)th detection area in the same lane based on the identification information of the Nth detection area, where the Nth detection area is the current detection area and N is an integer greater than or equal to 2; when the target vibration signal in the Nth detection area does not match the vibration signal of the (N-1)th detection area in the same lane, obtaining the vibration signal of the (N-1)th detection area in the adjacent lane within the current detection area.

[0014] Optionally, the bridge dynamic load monitoring method in this application embodiment further includes: when the load in the detection area is greater than a preset load limit, determining that the dynamic load is abnormal and issuing an alarm message.

[0015] According to another aspect of the embodiments of this application, a computer-readable storage medium is also provided, wherein a computer program is stored in the computer-readable storage medium, and the computer program is configured to execute the above-described bridge dynamic load monitoring method when running.

[0016] According to another aspect of the embodiments of this application, an electronic device is also provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the above-described bridge dynamic load monitoring method through the computer program.

[0017] In this embodiment, the following system is employed: a weighing device located within a weighing area at the bridgehead, acquisition devices located in multiple detection areas on the bridge, and a data processing device; each detection area has a set of acquisition devices on the vehicle entry side, including a vehicle separation device and a vibration sensor; the weighing device is used to acquire vehicle weight information when a vehicle passes through the weighing area; the vehicle separation device is used to separate vehicles entering the detection area and generate a vehicle separation signal; the vibration sensor is used to acquire target vibration information of the vehicles entering the detection area based on the vehicle separation signal, wherein the target vibration information includes the vehicle's vibration signal and the identification information of the detection area; the data processing device is integrated with the weighing device and the vibration sensor. The sensors are electrically connected and used for: when a vehicle enters the first detection zone within the lane, binding the vehicle weight information obtained from the weighing equipment with the target vibration information obtained from the vibration sensor; when a vehicle enters other detection zones besides the first one, matching the target vibration signal in the current detection zone with the vibration signal in the previous detection zone according to the identification information to determine the vehicle weight information corresponding to the target vibration signal; and when a vehicle enters other detection zones besides the last one, determining the load of the current detection zone based on the vehicle weight information of the vehicle entering the current detection zone and the vehicle weight information of the vehicle entering the next detection zone. This solves the technical problems of low stability and high installation cost of the method of determining the dynamic load of bridges using cameras and weighing equipment in related technologies. Vehicles entering the bridge are weighed using weighing equipment located at the bridgehead. Vibration signals generated when a vehicle enters the first detection zone are identified by data acquisition equipment, and these vibration signals are associated with and stored in relation to the vehicle weight. Simultaneously, if a vehicle enters any detection zone other than the first, vibration signals are collected by data acquisition equipment in that zone and matched against vibration signals in the previous detection zone. The vehicle weight corresponding to the vibration signal with the highest similarity is associated with the vibration signal in that detection zone and moved to its storage queue. Thus, when a vehicle enters a new detection zone, its weight information is obtained by identifying the vibration signal and moved to the new zone's storage queue. This allows for the addition of weight information in new detection zones while deleting weight information from previous zones, achieving real-time updates to the weight information in each detection zone. By monitoring all weight information in each detection zone, the dynamic load of each zone can be determined. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of an optional bridge dynamic load monitoring system according to an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of an optional configuration of a bridge dynamic load monitoring system according to an embodiment of this application. Figure 1 ;

[0022] Figure 3 This is a schematic diagram of an optional configuration of a bridge dynamic load monitoring system according to an embodiment of this application. Figure 2 ;

[0023] Figure 4 This is a schematic diagram of an optional bridge according to an embodiment of this application;

[0024] Figure 5 This is a flowchart of an optional bridge dynamic load monitoring method according to an embodiment of this application;

[0025] Figure 6 This is a schematic diagram of an optional bridge dynamic load monitoring device according to an embodiment of this application;

[0026] Figure 7 This is a structural block diagram of an optional electronic device according to an embodiment of this application. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0028] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0029] According to an embodiment of this application, a bridge dynamic load monitoring system is provided. Figure 1 This is a schematic diagram of an optional bridge dynamic load monitoring system according to an embodiment of this application, as shown below. Figure 1 As shown, the system includes:

[0030] The system includes a weighing device 101 located in the weighing area at the bridgehead, data acquisition devices 102 located in multiple detection areas on the bridge, and a data processing device 103. Each detection area has a set of data acquisition devices 102 on the vehicle entry side, each including a vehicle separation device and a vibration sensor. The weighing device 101 acquires vehicle weight information when a vehicle passes through the weighing area. The vehicle separation device separates vehicles entering the detection area and generates a separation signal. The vibration sensor acquires target vibration information of the vehicles entering the detection area based on the separation signal, whereby the target vibration information includes the vehicle's vibration signal and the detection area's identification information. The data processing device 103 is integrated with the weighing device 101 and... The vibration sensors are electrically connected and used for: binding the vehicle weight information obtained from the weighing device 101 with the target vibration information obtained from the vibration sensors when the vehicle enters the first detection area in the lane; matching the target vibration signal in the current detection area with the vibration signal in the previous detection area according to the identification information to determine the vehicle weight information corresponding to the target vibration signal; and determining the load of the current detection area according to the vehicle weight information of the vehicle entering the current detection area and the vehicle weight information of the vehicle entering the next detection area.

[0031] Specifically, Figure 2 This is a schematic diagram of an optional configuration of a bridge dynamic load monitoring system according to an embodiment of this application. Figure 1 ,like Figure 2As shown, the weighing area is set on the approach side of the bridge. Each vehicle needs to be weighed by the weighing device 101 when it enters the bridge to obtain the vehicle's weight information. After obtaining the vehicle's weight information, the vehicle will enter the first detection area. At this time, the vehicle identification device in the acquisition device 102 set in the bridge expansion joint identifies the vehicle's position when it enters the bridge expansion joint and sends the vehicle entry information to the vibration sensor. The vibration sensor starts to collect the vibration signal generated when the vehicle drives through the bridge expansion joint. When the vehicle identification device identifies that the vehicle has passed through the bridge expansion joint, the vibration sensor stops collecting the vibration signal, thereby obtaining the vibration signal corresponding to the vehicle. The number of the first detection area is determined by the number of the weighing device 101. For example, when the weighing device 101 is device number 5, the number of the first detection area corresponding to weighing device 101 is 5.1. At this time, the identification information generated by the vibration signal and the detection area number needs to be identified as the vibration information of the vehicle entering the first detection area, and the vibration information is associated with the vehicle weight information obtained by the weighing device 101 and stored in the storage queue of the first detection area.

[0032] When a vehicle moves from detection area 5.1 into the next detection area, namely detection area 5.2, the vehicle separation device located in the bridge expansion joint on the entry side of detection area 5.2 identifies the vehicle passing through the expansion joint. The vibration sensor collects the target vibration signal generated when the vehicle passes through the bridge expansion joint of detection area 5.2 based on the vehicle separation signal sent by the separation device. According to the identifier of detection area 5.2, the detection area connected to detection area 5.2 is identified as detection area 5.1. Vibration signals matching the target vibration signal are obtained from detection area 5.1 to obtain candidate vibration signals. The vehicle weight information corresponding to the candidate vibration signals in detection area 5.1 is moved to detection area 5.2 and associated with the target vibration signal and stored in the storage queue in detection area 5.2. At this time, as the vehicle moves from detection area 5.1 to detection area 5.2, the vehicle weight information is also moved from the storage queue of detection area 5.1 to the storage queue of detection area 5.2, thereby achieving timely updates of vehicle weight information in each detection area as the vehicle moves.

[0033] After obtaining the vehicle weight information of vehicles entering and leaving each detection area through the above system, the dynamic load of each detection area can be calculated based on all vehicle weight information stored in the storage queue of each detection area.

[0034] It should be noted that, Figure 3 This is a schematic diagram of an optional configuration of a bridge dynamic load monitoring system according to an embodiment of this application. Figure 2 ,like Figure 3As shown, on the departure side of the last detection area on the bridge, a set of bridge expansion joints can be added, and a data acquisition device 102 can be added to the bridge expansion joints. After the vehicle leaves the last detection area, the vehicle weight information of the vehicle leaving the last detection area can be deleted by the vibration signal collected by the data acquisition device 102, thereby ensuring the accuracy of the vehicle weight information in the last detection area.

[0035] Optionally, in the bridge dynamic load monitoring system provided in this application embodiment, the detection area is divided according to the lanes and expansion joints on the bridge; the vehicle separation device and vibration sensor are set in the expansion joint on the vehicle entry side of the detection area.

[0036] Specifically, Figure 4 This is a schematic diagram of an optional bridge according to an embodiment of this application, such as... Figure 4 As shown, each bridge has multiple lanes, and each lane is divided into multiple detection areas. When dividing the detection areas, the bridge expansion joints can be used for division, so that the acquisition device 102 can be set in the bridge expansion joints, thereby more conveniently collecting the vibration signals of the vehicles.

[0037] For example, a bridge can have three lanes, and each lane has multiple bridge expansion joints. The bridge can be divided into six inspection areas based on the bridge expansion joints and lanes.

[0038] Optionally, in the bridge dynamic load monitoring system provided in this application embodiment, a plurality of weighing devices 101 are provided in the weighing area, and each weighing device 101 corresponds to a lane.

[0039] Optionally, in the bridge dynamic load monitoring system provided in this application embodiment, the distance between the weighing device 101 and the first expansion joint in the lane is less than a preset value.

[0040] Specifically, in order to ensure that the weight information of the vehicle measured on the weighing device 101 can be accurately obtained when the vehicle enters the first detection area, the distance between the weighing device 101 and the first expansion joint in the lane can be set to be less than a preset value. This can prevent the vehicle from changing lanes after passing the weighing device 101, which would cause the vibration signal of the vehicle to not correspond to the vehicle weight information, resulting in incorrect vehicle weight information in the detection area, and consequently, incorrect load calculation in the detection area.

[0041] Optionally, the bridge dynamic load monitoring system provided in this application embodiment also includes a data monitoring center, which is connected to the data processing device 103, for receiving the load of each detection area and generating alarm information when the load in the detection area exceeds a preset load limit.

[0042] Specifically, the data monitoring center can detect the load of each detection area calculated in the data processing device 103 in real time, and determine whether there is any abnormality in the dynamic load of each detection area according to the data monitoring center, and issue an alarm message when there is an abnormality, thereby achieving the effect of detecting the dynamic load information at any location on the bridge.

[0043] Optionally, in the bridge dynamic load monitoring system provided in this application embodiment, the data processing device 103 is further used to filter and retain the vibration signal corresponding to the maximum amplitude when the phase of the vibration signal of the vehicle collected by the vibration sensor in different detection areas is the same but the amplitude is different.

[0044] Specifically, since there are multiple lanes in the bridge, when a vehicle enters a lane, while the acquisition device 102 in that lane detects a vibration signal, other acquisition devices 102 adjacent to that acquisition device 102 may also collect the vibration signal. At this time, the vibration signals in other acquisition devices 102 can be deleted according to the amplitude, thereby ensuring that the vibration signal emitted by the vehicle in the wrong lane is not collected.

[0045] According to an embodiment of this application, a method for monitoring dynamic loads on bridges is provided. Figure 5 This is a flowchart of an optional bridge dynamic load monitoring method according to an embodiment of this application, such as... Figure 5 As shown, the process of this method may include the following steps:

[0046] Step S501: When the vehicle passes the weighing equipment in the weighing area at the bridgehead, the vehicle weight information is obtained through the weighing equipment.

[0047] Specifically, when a vehicle passes the weighing equipment at the bridgehead, the vehicle's weight information can be obtained through the weighing equipment, thus completing the collection of the vehicle's weight information.

[0048] Step S502: After the vehicle enters the lane on the bridge, the vehicle separation device in each detection area determines whether a vehicle has entered, and obtains the target vibration information of the vehicle through the vibration sensor in the detection area. The target vibration information includes the vibration signal of the vehicle and the identification information of the detection area.

[0049] Specifically, there are multiple bridge expansion joints on the bridge deck. Each bridge expansion joint includes a vehicle separation device and a vibration sensor. The vehicle separation device can determine whether a vehicle has entered the detection area and send a vehicle separation signal to the vibration sensor when the vehicle enters the detection area. Based on the vehicle separation signal, the vibration sensor is controlled to collect the vehicle vibration signal, thereby obtaining the vibration signal generated when the vehicle enters the detection area.

[0050] Step S503: When the vehicle enters the first detection area, the vehicle weight information obtained from the weighing equipment is bound to the target vibration information obtained from the vibration sensor.

[0051] Specifically, such as Figure 3 As shown, after obtaining the vehicle weight information, the vehicle will enter the first detection area. At this time, the vehicle identification device in the acquisition equipment set in the bridge expansion joint identifies the vehicle's entry position into the bridge expansion joint and sends the vehicle entry information to the vibration sensor. The vibration sensor starts to collect the vibration signal generated by the vehicle driving in the bridge expansion joint. When the vehicle identification device identifies that the vehicle has passed through the bridge expansion joint, the vibration sensor stops collecting the vibration signal, thus obtaining the vibration signal corresponding to the vehicle. The number of the first detection area is determined by the number of the weighing equipment. For example, when the weighing equipment is equipment number 5, the number of the first detection area corresponding to weighing equipment number 5 is 5.1. At this time, the identification information generated by the vibration signal and the detection area number needs to be identified as the vibration information of the vehicle entering the first detection area, and the vibration information is associated with the vehicle weight information obtained by the weighing equipment and stored in the storage queue of the first detection area.

[0052] Step S504: When the vehicle enters a detection area other than the first detection area, the target vibration signal in the current detection area is matched with the vibration signal in the previous detection area according to the identification information to determine the vehicle weight information corresponding to the target vibration signal.

[0053] Specifically, such as Figure 3 As shown, when a vehicle moves from detection area 5.1 into the next detection area, namely detection area 5.2, the vehicle separation device located in the bridge expansion joint on the entry side of detection area 5.2 identifies the vehicle passing through the bridge expansion joint. The vibration sensor collects the target vibration signal generated when the vehicle passes through the bridge expansion joint of detection area 5.2 based on the vehicle separation signal sent by the separation device. According to the identifier of detection area 5.2, the detection area connected to detection area 5.2 is identified as detection area 5.1. The vibration signal matching the target vibration signal is obtained from detection area 5.1 to obtain the candidate vibration signal. The vehicle weight information corresponding to the candidate vibration signal in detection area 5.1 is moved to detection area 5.2 and associated with the target vibration signal and stored in the storage queue in detection area 5.2. At this time, as the vehicle moves from detection area 5.1 to detection area 5.2, the vehicle weight information is also moved from the storage queue of detection area 5.1 to the storage queue of detection area 5.2, thereby achieving timely updating of vehicle weight information in each detection area as the vehicle moves.

[0054] Step S505: When a vehicle enters a detection area other than the last detection area, the load of the current detection area is determined based on the vehicle weight information of the vehicle entering the current detection area and the vehicle weight information of the vehicle entering the next detection area.

[0055] Specifically, after obtaining the vehicle weight information of vehicles entering and leaving each detection area through the above method, the dynamic load of each detection area can be calculated based on all vehicle weight information stored in the storage queue of each detection area.

[0056] Through steps S501 to S505, when a vehicle passes the weighing device in the weighing area at the bridgehead, the vehicle's weight information is obtained through the weighing device. After the vehicle enters the lane on the bridge, the vehicle identification device in each detection area determines whether a vehicle has entered, and the target vibration information of the vehicle is obtained through vibration sensors in the detection area. The target vibration information includes the vehicle's vibration signal and the identification information of the detection area. When a vehicle enters the first detection area, the vehicle weight information obtained from the weighing device is bound to the target vibration information obtained from the vibration sensor. When a vehicle enters other detection areas besides the first detection area, the target vibration signal in the current detection area is matched with the vibration signal in the previous detection area according to the identification information to determine the vehicle weight information corresponding to the target vibration signal. Furthermore, when a vehicle enters other detection areas besides the last detection area, the load of the current detection area is determined based on the vehicle weight information of the vehicle entering the current detection area and the vehicle weight information of the vehicle entering the next detection area. This solves the technical problems of low stability and high installation cost in related technologies that use cameras and weighing devices to determine the dynamic load of bridges. Vehicles entering the bridge are weighed using weighing equipment located at the bridgehead. Vibration signals generated when a vehicle enters the first detection zone are identified by data acquisition equipment, and these vibration signals are associated with and stored in relation to the vehicle weight. Simultaneously, if a vehicle enters any detection zone other than the first, vibration signals are collected by data acquisition equipment in that zone and matched against vibration signals in the previous detection zone. The vehicle weight corresponding to the vibration signal with the highest similarity is associated with the vibration signal in that detection zone and moved to its storage queue. Thus, when a vehicle enters a new detection zone, its weight information is obtained by identifying the vibration signal and moved to the new zone's storage queue. This allows for the addition of weight information in new detection zones while deleting weight information from previous zones, achieving real-time updates to the weight information in each detection zone. By monitoring all weight information in each detection zone, the dynamic load of each zone can be determined.

[0057] Optionally, in the bridge dynamic load monitoring method provided in this application embodiment, matching the target vibration signal in the current detection area with the vibration signal in the previous detection area according to the identification information to determine the vehicle weight information corresponding to the target vibration signal includes: when the vehicle has completely entered the current detection area, acquiring the target vibration information of the current detection area and extracting the feature value of the target vibration signal; comparing the feature value of the target signal in the current detection area with the feature values ​​of multiple target vibration signals in the previous detection area; when the similarity between the feature value of the target vibration signal in the current detection area and the feature value of one target vibration signal in the previous detection area is greater than a preset threshold, determining the vehicle weight information corresponding to the target vibration signal in the current detection area based on the vehicle weight information in the previous detection area, and storing it.

[0058] Specifically, feature values ​​can be compared using a preset model. Since vibration signals contain information such as amplitude and frequency, the preset model can determine whether vibration signals originate from the same vehicle based on the similarity between feature values ​​in each vibration signal. The target vibration information of the current detection area and all vibration information in the storage queue of the previous detection area can be input into the preset model. Then, the preset model can extract vibration signals from multiple vibration signals whose similarity to the target vibration information is greater than a preset threshold.

[0059] Furthermore, there may be multiple vibration signals with a similarity greater than a preset threshold, resulting in multiple candidate vibration signals. At this point, the first attribute information of each candidate vibration signal can be obtained, wherein the first attribute information includes at least one of the following: number of axles, axle spacing; the second attribute information of the vehicle is determined based on the target vibration signal, wherein the second attribute information includes at least one of the following: number of axles, axle spacing; the second attribute information is compared with multiple first attribute information, and the first attribute information that is the same as the second attribute information is determined as the target attribute information; the candidate vibration signal corresponding to the target attribute information is determined as the vibration signal that is most similar to the target vibration signal.

[0060] Optionally, in the bridge dynamic load monitoring method provided in this application embodiment, matching the target vibration signal in the current detection area with the vibration signal in the previous detection area according to the identification information, the method further includes: determining the target vibration signal of the (N-1)th detection area in the same lane according to the identification information of the Nth detection area, wherein the Nth detection area is the current detection area, and N is an integer greater than or equal to 2; when the target vibration signal in the Nth detection area does not match the vibration signal of the (N-1)th detection area in the same lane, the vibration signal of the (N-1)th detection area in the adjacent lane of the current detection area is obtained.

[0061] Specifically, such as Figure 3 As shown, the detection area corresponding to each vibration information can be determined based on the identification information in each vibration information. For example, if the current detection area can be detection area 2.2, then N-1 detection areas can be detection area 2.1. At this time, it can be determined whether there is a vibration signal in the storage queue of detection area 2.1 that has a similarity greater than a preset threshold with the target vibration signal.

[0062] Furthermore, since there are multiple parallel lanes, if there is no vibration signal with a similarity greater than a preset threshold in the (N-1)th detection area, vibration signals from lanes adjacent to the (N-1)th detection area can be used. For example, if there is no similar vibration signal in detection area 2.1, vibration signals with a similarity greater than a preset threshold can be determined in detection areas 1.1 and 3.1. This ensures that when a vehicle changes lanes, the vehicle weight information can be accurately transferred, thereby achieving the effect of accurately calculating the load of each detection area.

[0063] It should be noted that if there are no vibration signals with a similarity greater than the preset threshold in adjacent detection areas, vibration information on the other lanes in parallel will continue to be acquired until a vibration signal with a similarity greater than the preset threshold is acquired.

[0064] Optionally, in the bridge dynamic load monitoring method provided in this application embodiment, the bridge dynamic load monitoring method in this application embodiment further includes: when the load in the detection area is greater than a preset load limit, determining that the dynamic load is abnormal and issuing an alarm message.

[0065] Specifically, after determining the vehicle weight information in each detection area using the above method, the load of each detection area can be calculated based on the vehicle weight information. The load value of each area is then compared with the preset load limit. If the load value of a certain detection area is greater than the preset load limit, it indicates that the load in that detection area is too large, and the bridge is at risk. An alarm message needs to be issued to prompt staff to manage vehicles, thereby ensuring the safety of the bridge.

[0066] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0067] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM (Read-Only Memory) / RAM (Random Access Memory), magnetic disk, optical disk), and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods of the various embodiments of this application.

[0068] According to an embodiment of this application, a bridge dynamic load monitoring device for implementing the above-described bridge dynamic load monitoring method is also provided. Figure 6 This is a schematic diagram of an optional bridge dynamic load monitoring device according to an embodiment of this application, as shown below. Figure 6 As shown, the bridge dynamic load monitoring device may include:

[0069] The weighing unit 61 is used to obtain the vehicle weight information through the weighing equipment when the vehicle passes through the weighing area at the bridgehead.

[0070] The judgment unit 62 is used to determine whether a vehicle has entered the lane on the bridge based on the vehicle separation device in each detection area after the vehicle enters the lane, and to obtain the target vibration information of the vehicle through the vibration sensor in the detection area; wherein, the target vibration information includes the vibration signal of the vehicle and the identification information of the detection area.

[0071] The acquisition unit 63 is used to bind the vehicle weight information acquired from the weighing device with the target vibration information acquired from the vibration sensor when the vehicle enters the first detection area.

[0072] The matching unit 64 is used to match the target vibration signal in the current detection area with the vibration signal in the previous detection area according to the identification information when the vehicle enters other detection areas besides the first detection area, and to determine the vehicle weight information corresponding to the target vibration signal.

[0073] The determining unit 65 is used to determine the load of the current detection area based on the vehicle weight information of the vehicle entering the current detection area and the vehicle weight information of the vehicle entering the next detection area when the vehicle enters other detection areas besides the last detection area.

[0074] In an exemplary embodiment, the matching unit 64 includes: a first acquisition module, configured to acquire target vibration information of the current detection area and extract feature values ​​of the target vibration signal when the vehicle has fully entered the current detection area; a comparison module, configured to compare the feature values ​​of the target signal in the current detection area with the feature values ​​of multiple target vibration signals in the previous detection area; and a first determination module, configured to determine the vehicle weight information corresponding to the target vibration signal in the current detection area from the vehicle weight information corresponding to the target vibration signal in the previous detection area and store it when the similarity between the feature value of the target vibration signal in the current detection area and the feature value of a target vibration signal in the previous detection area is greater than a preset threshold.

[0075] In an exemplary embodiment, the matching unit 64 includes: a second determining module, configured to determine the target vibration signal of the (N-1)th detection area in the same lane based on the identification information of the Nth detection area, wherein the Nth detection area is the current detection area and N is an integer greater than or equal to 2; and a second acquiring module, configured to acquire the vibration signal of the (N-1)th detection area in the adjacent lane within the current detection area when the target vibration signal in the Nth detection area does not match the vibration signal of the (N-1)th detection area in the same lane.

[0076] In an exemplary embodiment, the bridge dynamic load monitoring device in this application further includes: an alarm unit, used to determine that the dynamic load is abnormal and issue an alarm message when the load in the detection area is greater than a preset load limit.

[0077] It should be noted that the examples and application scenarios implemented by the above modules and corresponding steps are the same, but are not limited to the content disclosed in the above embodiments. It should also be noted that the above modules, as part of a device, can operate in environments such as... Figure 1 The hardware environment shown can be implemented through software or hardware, and the hardware environment includes the network environment.

[0078] According to another aspect of the embodiments of this application, a storage medium is also provided. Optionally, in this embodiment, the storage medium can be used to execute the program code of any of the bridge dynamic load monitoring methods described above in the embodiments of this application.

[0079] Optionally, in this embodiment, the storage medium may be located on at least one of the network devices in the network shown in the above embodiment.

[0080] Optionally, in this embodiment, the storage medium is configured to store program code for performing the following steps: when a vehicle passes the weighing device in the weighing area at the bridgehead, the vehicle weight information is obtained through the weighing device; after the vehicle enters the lane on the bridge, it is determined whether a vehicle has entered based on the vehicle separation device in each detection area, and the target vibration information of the vehicle is obtained through the vibration sensor in the detection area; wherein, the target vibration information includes the vehicle's vibration signal and the identification information of the detection area; when the vehicle enters the first detection area, the vehicle weight information obtained from the weighing device is bound with the target vibration information obtained from the vibration sensor; when the vehicle enters other detection areas besides the first detection area, the target vibration signal in the current detection area is matched with the vibration signal in the previous detection area according to the identification information to determine the vehicle weight information corresponding to the target vibration signal; and when the vehicle enters other detection areas besides the last detection area, the load of the current detection area is determined according to the vehicle weight information of the vehicle entering the current detection area and the vehicle weight information of the vehicle entering the next detection area of ​​the current detection area.

[0081] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated in this embodiment.

[0082] Optionally, in this embodiment, the storage medium may include, but is not limited to, various media capable of storing program code, such as USB flash drives, ROMs, RAMs, portable hard drives, magnetic disks, or optical disks.

[0083] According to another aspect of the embodiments of this application, an electronic device for implementing the above-described bridge dynamic load monitoring method is also provided. The electronic device may be a server, a terminal, or a combination thereof.

[0084] Figure 7 This is a structural block diagram of an optional electronic device according to an embodiment of this application, such as... Figure 7 As shown, it includes a processor 702, a communication interface 704, a memory 706, and a communication bus 708. The processor 702, communication interface 704, and memory 706 communicate with each other via the communication bus 708.

[0085] Memory 706 is used to store computer programs;

[0086] The processor 702, when executing the computer program stored in the memory 706, performs the following steps: when a vehicle passes the weighing device in the weighing area at the bridgehead, the processor acquires the vehicle's weight information through the weighing device; after the vehicle enters the lane on the bridge, the processor determines whether a vehicle has entered based on the vehicle separation device in each detection area, and acquires the vehicle's target vibration information through the vibration sensor in the detection area; wherein, the target vibration information includes the vehicle's vibration signal and the identification information of the detection area; when the vehicle enters the first detection area, the processor binds the vehicle weight information acquired from the weighing device with the target vibration information acquired from the vibration sensor; when the vehicle enters other detection areas besides the first detection area, the processor matches the target vibration signal in the current detection area with the vibration signal in the previous detection area according to the identification information to determine the vehicle weight information corresponding to the target vibration signal; and when the vehicle enters other detection areas besides the last detection area, the processor determines the load of the current detection area based on the vehicle weight information of the vehicle entering the current detection area and the vehicle weight information of the vehicle entering the next detection area of ​​the current detection area.

[0087] Optionally, the communication bus can be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. This communication bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 7 The symbol is represented by a single thick line, but this does not indicate that there is only one bus or one type of bus. The communication interface is used for communication between the aforementioned electronic device and other devices.

[0088] The memory may include RAM, or non-volatile memory, such as at least one disk storage device. Optionally, the memory may also be at least one storage device located remotely from the aforementioned processor.

[0089] The processors mentioned above can be general-purpose processors, including but not limited to: CPU (Central Processing Unit), NP (Network Processor), etc.; they can also be DSP (Digital Signal Processor), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0090] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0091] Those skilled in the art will understand that Figure 7 The structure shown is for illustrative purposes only. The device used to implement the above-mentioned bridge dynamic load monitoring method can be a terminal device, such as a smartphone (e.g., Android phone, iOS phone), tablet computer, handheld computer, mobile internet device (MID), PAD, etc. Figure 7 This does not limit the structure of the aforementioned electronic device. For example, the electronic device may also include components that are more... Figure 7 The more or fewer components shown (such as network interfaces, display devices, etc.), or having the same Figure 7 The different configurations shown.

[0092] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be implemented by a program instructing the hardware related to the terminal device. The program can be stored in a computer-readable storage medium, which may include: flash drive, ROM, RAM, disk or optical disk, etc.

[0093] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0094] If the integrated units in the above embodiments are implemented as software functional units and sold or used as independent products, they can be stored in the aforementioned computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause one or more computer devices (which may be personal computers, servers, or network devices, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application.

[0095] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0096] In the several embodiments provided in this application, it should be understood that the disclosed client can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, indirect coupling or communication connection between units or modules, and may be electrical or other forms.

[0097] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of the solution provided in this embodiment, depending on actual needs.

[0098] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or at least two units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0099] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A bridge dynamic load monitoring system, characterized by, The system comprises a weighing device located in a weighing area at a bridge head, a plurality of acquisition devices located in a plurality of detection areas on the bridge, and a data processing device; a set of acquisition devices are arranged on the vehicle entry side of each detection area, and the acquisition devices comprise a vehicle separation device and a vibration sensor; The weighing device is configured to acquire vehicle weight information of a vehicle when the vehicle passes through the weighing area; the vehicle separation device is configured to separate the vehicle entering the detection area and generate a separation signal; and the vibration sensor is configured to acquire target vibration information of the vehicle entering the detection area according to the separation signal, wherein the target vibration information comprises a vibration signal of the vehicle and identification information of the detection area; The data processing device is electrically connected to the weighing device and the vibration sensor, and is configured to: bind the vehicle weight information acquired from the weighing device and the target vibration information acquired from the vibration sensor when the vehicle enters a first detection area in the lane; match the target vibration signal in the current detection area with the vibration signal in the previous detection area according to the identification information when the vehicle enters a detection area other than the first detection area, to determine vehicle weight information corresponding to the target vibration signal; and determine the load of the current detection area according to the vehicle weight information of the vehicle entering the current detection area and the vehicle weight information of the vehicle entering the next detection area of the current detection area when the vehicle enters a detection area other than the last detection area.

2. The bridge dynamic load monitoring system of claim 1, wherein, The detection areas are divided according to the lanes and expansion joints on the bridge; The vehicle separation device and the vibration sensor are arranged in the expansion joint on the vehicle entry side of the detection area.

3. The bridge dynamic load monitoring system of claim 1, wherein, A plurality of weighing devices are arranged in the weighing area, and the weighing devices correspond to the lanes one by one.

4. The bridge dynamic load monitoring system of claim 1, wherein, The distance between the weighing device and the first expansion joint in the lane is less than a preset value.

5. The bridge dynamic load monitoring system of claim 1, wherein, A data monitoring center is further included, which is connected to the data processing device, configured to receive the load of each detection area, and generate an alarm information when the load in the detection area is greater than a preset load limit.

6. The bridge dynamic load monitoring system of claim 1, wherein, The data processing device is further configured to filter and retain the vibration signal corresponding to the maximum amplitude when the phases of the vibration signals of the vehicles collected by the vibration sensors in different detection areas are the same and the amplitudes are different.

7. A bridge dynamic load monitoring method based on the bridge dynamic load monitoring system according to any one of claims 1-6, characterized in that, The system comprises: acquiring vehicle weight information of a vehicle by a weighing device when the vehicle passes through the weighing device in a weighing area at a bridge head; judging whether a vehicle enters each detection area based on a vehicle separation device in the detection area after the vehicle enters a lane on a bridge, and acquiring target vibration information of the vehicle by a vibration sensor in the detection area, wherein the target vibration information comprises a vibration signal of the vehicle and identification information of the detection area; binding the vehicle weight information acquired from the weighing device and the target vibration information acquired from the vibration sensor when the vehicle enters a first detection area. When the vehicle enters a detection area other than the first detection area, a target vibration signal in the current detection area is matched with a vibration signal in the last detection area according to the identification information, and vehicle weight information corresponding to the target vibration signal is determined; When the vehicle enters a detection area other than the last detection area, vehicle weight information of the vehicle entering the current detection area and vehicle weight information of the vehicle entering the next detection area of the current detection area are determined to determine the load of the current detection area.

8. The bridge dynamic load monitoring method of claim 7, wherein, The matching of the target vibration signal in the current detection area with the vibration signal in the last detection area according to the identification information to determine the vehicle weight information corresponding to the target vibration signal comprises: In the case that the vehicle completely enters the current detection area, target vibration information of the current detection area is obtained, and a characteristic value of the target vibration signal is extracted; The characteristic value of the target signal in the current detection area is compared with characteristic values of a plurality of target vibration signals in the last detection area; When the similarity between the characteristic value of the target vibration signal in the current detection area and the characteristic value of one target vibration signal in the last detection area is greater than a preset threshold, the vehicle weight information corresponding to the target vibration signal in the last detection area is determined as the vehicle weight information corresponding to the target vibration signal in the current detection area, and the vehicle weight information is stored.

9. The bridge dynamic load monitoring method of claim 7, wherein, The matching of the target vibration signal in the current detection area with the vibration signal in the last detection area according to the identification information further comprises: According to the identification information of the Nth detection area, a target vibration signal of the N-1th detection area in the same lane is determined, wherein the Nth detection area is the current detection area, and N is an integer greater than or equal to 2; When the target vibration signal in the Nth detection area does not match the vibration signal of the N-1th detection area in the same lane, a vibration signal of the N-1th detection area in the adjacent lane in the current detection area is obtained.

10. The bridge dynamic load monitoring method of claim 7, wherein, Further comprising: When the load of the detection area is greater than a preset load limit, it is determined that the dynamic load is abnormal, and an alarm information is sent.

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