Bridge Dynamic Load Monitoring System and Method

Abstract

The present application discloses a bridge dynamic load monitoring system and method. Among them, the above method includes: obtaining the vibration information of the axles entering the detection area based on the vibration signal detection device on the vehicle entering side of the detection area, and obtaining the vibration information of the axles leaving the detection area through the vibration signal detection device located on the vehicle leaving side of the detection area. Among them, the vibration information includes the vibration signal of the axle and the identification information of the detection area, and the vibration signal detection device includes a sensor array; calculating the weight of the entering axles entering the detection area according to the entering vibration information, calculating the weight of the leaving axles leaving the detection area according to the leaving vibration information, and determining the load of the detection area according to the weight of the entering axles and the weight of the leaving axles. Through the present application, the technical problems of low stability and high installation cost in the method of using cameras and weighing devices to determine the bridge dynamic load in the related art are solved.

Description

Technical Field

[0001] The present application relates to the field of vehicle identification, and more particularly, to a bridge dynamic load monitoring system and method. Background Art

[0002] In order to reduce the potential safety hazards brought by overweight freight vehicles to bridges and prevent the occurrence of phenomena such as damage or collapse of the bridge deck due to overweight vehicles, it is necessary to monitor the health status of the bridge in real time, so that feedback can be given in a timely manner when the health status of the bridge is abnormal, such as when the load is too large, thereby ensuring the safety of the bridge.

[0003] In the related art, the method of monitoring the dynamic load of a bridge usually arranges multiple cameras along the bridge, obtains traffic flow video information covering the entire bridge deck according to the cameras, uses the video to track the vehicle position, and weighs the vehicle before it gets on the bridge, so as to determine the bridge load based on the weight and position of the vehicle on the bridge. However, the above method for detecting vehicle information has problems that due to the need to set multiple cameras and jointly obtain the vehicle distribution position through multiple cameras, it is impossible to accurately determine the vehicle distribution position when affected by the external environment and when the vehicle is blocked, and setting up cameras also requires a large amount of cost. Summary of the Invention

[0004] The embodiments of the present application provide a bridge dynamic load monitoring system and method, so as to at least solve the technical problems of low stability and high installation cost of the method for determining the bridge dynamic load by using cameras and weighing devices in the related art.

[0005] According to one aspect of the embodiments of the present application, a bridge dynamic load monitoring system is provided, including: a bridge divided into multiple detection areas, with vibration signal detection devices arranged on both the vehicle-in side and the vehicle-out side of each detection area. Among them, the bridge dynamic load monitoring system includes vibration signal detection devices and a data processing device, and the vibration signal detection devices include a sensor array; among them, the vibration signal detection device located on the vehicle-in side of the detection area is used to obtain the incoming vibration information of the axles entering the detection area, and the vibration signal detection device located on the vehicle-out side of the detection area is used to obtain the outgoing vibration information of the axles leaving the detection area. Among them, the vibration information includes the vibration signal of the axle and the identification information of the detection area; the data processing device is electrically connected to the vibration signal detection device, and is used to calculate the incoming axle weight of the axles entering the detection area according to the incoming vibration information, calculate the outgoing axle weight of the axles leaving the detection area according to the outgoing vibration information, and determine the load of the detection area according to the incoming axle weight and the outgoing axle weight; when an axle enters the detection area within the lane, determine the axle weight of the axle in the current detection area according to the incoming vibration signal; when the axle enters the next detection area of the current detection area, determine the axle weight of the axle in the next detection area according to the outgoing vibration signal, and delete the axle weight in the current detection area that is the same as the axle weight in the next detection area; and when the vehicle enters other detection areas except the last detection area, determine the load of the current detection area according to the axle weight of the axles entering the current detection area and the axle weight of the axles entering the next detection area of the current detection area.

[0006] Optionally, the detection areas are divided according to the lanes and expansion joints on the bridge.

[0007] Optionally, within the same lane, the vibration signal detection device on the vehicle-out side of the Nth detection area and the vibration signal detection device on the vehicle-in side of the (N + 1)th detection area are the same; where N is a positive integer and N is less than the number of detection areas within the same lane.

[0008] Optionally, each sensor array includes multiple vibration sensors, the vibration sensors are electrically connected to the data processing device, and the multiple vibration sensors are symmetrically distributed on two side walls of the expansion joint.

[0009] Optionally, it further includes a data monitoring center, which is connected to the data processing device and is used to receive the load of each detection area and generate an alarm message when the load within the detection area is greater than the weight threshold.

[0010] Optionally, the data processing device is further used to, when the phases of the vibration signals obtained by different vibration signal detection devices are the same and the amplitudes are different, screen and retain the vibration signal corresponding to the maximum amplitude.

[0011] According to another aspect of the embodiments of the present application, there is also provided a method for monitoring the dynamic load of a bridge, including: obtaining the vibration information of the axles entering the detection area based on the vibration signal detection device on the vehicle entering side of the detection area, and obtaining the vibration information of the axles leaving the detection area through the vibration signal detection device located on the vehicle leaving side of the detection area, where the vibration information includes the vibration signal of the axle and the identification information of the detection area, and the vibration signal detection device includes a sensor array; calculating the weight of the entering axles entering the detection area according to the entering vibration information, calculating the weight of the leaving axles leaving the detection area according to the leaving vibration information, and determining the load of the detection area according to the weight of the entering axles and the weight of the leaving axles.

[0012] Optionally, the method further includes: after calculating the load of the detection area according to the weight of the entering axles and the weight of the leaving axles, deleting the records of the weight of the entering axles and the weight of the leaving axles that match in pairs within the detection area; and for the weight of the entering axles and the weight of the leaving axles that do not match in pairs, when the storage duration of their records exceeds a preset value, deleting them.

[0013] Optionally, before calculating the weight of the entering axles entering the detection area according to the entering vibration information, the method further includes: using multiple test vehicles with different axle weights and different vehicle speeds to pass through the vibration signal detection device to obtain multiple test vibration signals; obtaining the weight of each axle of each test vehicle through a weighing device to obtain multiple test weights; associating and storing the multiple test weights and the test vibration signals corresponding to each test weight in a table to obtain a preset comparison table; and performing the step of calculating the weight of the entering axles entering the detection area according to the entering vibration information based on the preset comparison table.

[0014] Optionally, the sensor array includes multiple vibration sensors, the sensor array is arranged in the expansion joint of the bridge, and obtaining the vibration information of the axles entering the detection area based on the vibration signal detection device on the vehicle entering side of the detection area includes: obtaining the sub-vibration signals collected by each vibration sensor in the sensor array to obtain multiple sub-vibration signals; superimposing the sub-vibration signals sent by the vibration sensors on the first side of the expansion joint to obtain a first sub-vibration signal; superimposing the sub-vibration signals sent by the vibration sensors on the second side of the expansion joint to obtain a second sub-vibration signal; and combining the first sub-vibration signal and the second sub-vibration signal to obtain an updated first vibration signal.

[0015] According to yet another aspect of the embodiments of the present application, there is also provided a computer-readable storage medium, in which a computer program is stored, where the computer program is configured to execute the above-mentioned method for monitoring the dynamic load of a bridge when running.

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

[0017] In the embodiments of the present application, a bridge divided into multiple detection areas is adopted. Vibration signal detection devices are arranged on both the vehicle entry side and the vehicle exit side of each detection area. Wherein, the bridge dynamic load monitoring system includes vibration signal detection devices and a data processing device. The vibration signal detection devices include a sensor array. Among them, the vibration signal detection device located on the vehicle entry side of the detection area is used to obtain the entry vibration information of the axle entering the detection area, and the vibration signal detection device located on the vehicle exit side of the detection area is used to obtain the exit vibration information of the axle exiting the detection area. Wherein, the vibration information includes the vibration signal of the axle and the identification information of the detection area. The data processing device is electrically connected to the vibration signal detection device and is used to calculate the weight of the entry axle entering the detection area according to the entry vibration information, calculate the weight of the exit axle exiting the detection area according to the exit vibration information, and determine the load of the detection area according to the weight of the entry axle and the weight of the exit axle. When the axle enters the detection area within the lane, the weight of the axle in the current detection area is determined according to the entry vibration signal. When the axle enters the next detection area of the current detection area, the weight of the axle in the next detection area is determined according to the exit vibration signal, and the axle weight that is the same as the axle weight in the next detection area in the current detection area is deleted. And when the vehicle enters other detection areas except the last detection area, the load of the current detection area is determined according to the axle weight of the axle entering the current detection area and the axle weight of the axle entering the next detection area of the current detection area. This solves the technical problems of low stability and high installation cost in the method of using a camera and a weighing device to determine the bridge dynamic load in the related art. By using the vibration signal detection device to determine the vibration information generated by the axle entering each detection area, and determining the weight information of the axle entering the detection area according to the vibration information, and using the vibration signal detection device to determine the vibration information generated by the axle exiting each detection area, and determining the weight information of the axle exiting the detection area according to the vibration information, the total axle weight of multiple axles at each moment on the detection area can be calculated according to the entry axle weight information and the exit axle weight information, so that the dynamic load of the detection area can be determined according to the total axle weight at each moment, and whether there is a risk in the detection area can be determined according to the dynamic load. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present application and used together with the specification to explain the principles of the present application.

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

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

[0021] Figure 2 is a schematic diagram of an optional setting style of a bridge dynamic load monitoring system according to an embodiment of the present application;

[0022] Figure 3 is a schematic diagram of an optional bridge according to an embodiment of the present application;

[0023] Figure 4 is a flowchart of an optional bridge dynamic load monitoring method according to an embodiment of the present application;

[0024] Figure 5 is a schematic diagram of an optional bridge dynamic load monitoring device according to an embodiment of the present application;

[0025] Figure 6 is a structural block diagram of an optional electronic device according to an embodiment of the present application. Detailed implementation manners

[0026] In order to enable those skilled in the art to better understand the solutions of the present application, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0027] It should be noted that the terms "first", "second", etc. in the description, claims and above-mentioned drawings of this application are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0028] According to an embodiment of the present application, a bridge dynamic load monitoring system is provided. Figure 1 is a schematic diagram of an optional bridge dynamic load monitoring system according to an embodiment of the present application, as Figure 1 shown, the system includes:

[0029] A bridge divided into multiple detection areas, with vibration signal detection devices provided on both the vehicle entry side and the vehicle exit side of each detection area. Among them, the bridge dynamic load monitoring system includes the vibration signal detection device and a data processing device, and the vibration signal detection device includes a sensor array; wherein, the vibration signal detection device located on the vehicle entry side of the detection area is used to obtain the entry vibration information of the axle entering the detection area, and the vibration signal detection device located on the vehicle exit side of the detection area is used to obtain the exit vibration information of the axle exiting the detection area. Among them, the vibration information includes the vibration signal of the axle and the identification information of the detection area; the data processing device is electrically connected to the vibration signal detection device, and is used to calculate the weight of the entry axle entering the detection area according to the entry vibration information, calculate the weight of the exit axle exiting the detection area according to the exit vibration information, and determine the load of the detection area according to the weight of the entry axle and the weight of the exit axle; when the axle enters the detection area within the lane, determine the weight of the axle in the current detection area according to the entry vibration signal; when the axle enters the next detection area of the current detection area, determine the weight of the axle in the next detection area according to the exit vibration signal, and delete the axle weight in the current detection area that is the same as the axle weight in the next detection area; and, when the vehicle enters other detection areas except the last detection area, determine the load of the current detection area according to the weight of the axle entering the current detection area and the weight of the axle entering the next detection area of the current detection area.

[0030] Specifically, Figure 2It is a schematic diagram of an optional setting style of a bridge dynamic load monitoring system according to an embodiment of the present application. As Figure 2 shown, at the entrance and exit of each detection area, vibration signal detection devices are installed. Each vibration signal detection device includes a sensor array, which is composed of multiple vibration sensors. When a vehicle enters the detection area, it will pass through the vibration signal detection device on the entrance side. At this time, the sensor array in the vibration signal detection device on the entrance side will collect the vibration signals generated by each axle in the vehicle, store each vibration signal according to the dimension of the axle, determine the axle weight of each vibration signal corresponding to the axle according to the corresponding relationship between the preset vibration signal and the axle weight, and store the axle weight in the storage queue of the detection area.

[0031] Furthermore, when the vibration signal detection device on the exit side of the detection area collects the vibration signal generated when the axle exits, it will also determine the weight information of the axle according to the vibration signal. At this time, there is no need to match the vibration signal generated when the vehicle enters the detection area, and directly delete the axle weight information in the storage queue of the detection area that is the same as the weight information of the axle, so as to complete the data update of the storage queue in the detection area, and thus the dynamic load of the detection area can be determined according to the total axle weight in the storage queue at each moment.

[0032] Optionally, the detection area is divided according to the lanes and expansion joints on the bridge.

[0033] It should be noted that Figure 3 is a schematic diagram of an optional bridge according to an embodiment of the present application. As Figure 3 shown, since there are multiple lanes in the bridge and each lane is divided into different detection areas by the bridge expansion joints, it is possible that a vehicle changes lanes. For example, after the vehicle enters area 11 and then changes lanes to area 21, the vibration signal detection devices passed by the vehicle when entering and exiting do not belong to the same detection area. At this time, it can be determined according to the identification information that the vibration signal detection device passed by the vehicle when exiting is the exit-side vibration signal detection device of area 21. At this time, according to the proximity principle, first obtain the axle weight information that is the same as the axle weight of the exiting axle from the storage queue of area 21 according to the identification information, and delete the axle weight information. However, in the case where there is no axle weight information in the storage queue of area 21 that is the same as the axle weight of the exiting axle, it is necessary to obtain the axle weight information that is the same as the axle weight of the exiting axle from the adjacent two lanes and delete the axle weight information, so as to ensure the accuracy of the dynamic load of the detection area in the case of vehicle lane change.

[0034] Optionally, within the same lane, the vibration signal detection device on the vehicle exiting side of the Nth detection area is the same as the vibration signal detection device on the vehicle entering side of the (N + 1)th detection area; where N is a positive integer and N is less than the number of detection areas within the same lane.

[0035] Specifically, as Figure 3 shown, the vibration signal detection device on the exiting side of area 11 is the vibration signal detection device on the entering side of area 12, so that each vibration signal detection device can be efficiently utilized to collect axle vibration information.

[0036] Optionally, each sensor array includes a plurality of vibration sensors, the vibration sensors are electrically connected to the data processing device, and the plurality of vibration sensors are symmetrically distributed on two side walls of the expansion joint.

[0037] Specifically, as Figure 2 shown, since it is necessary to accurately collect the vibration information when the vehicle passes through the bridge expansion joint, multiple vibration sensors can be set in the bridge expansion joint to collect vibration signals simultaneously, so as to ensure that when a certain vibration sensor fails, the remaining vibration sensors can still normally collect vibration signals. Each vibration sensor can be installed inside the bridge expansion joint, tightly connected to the bridge expansion joint, or fixed in the anchoring material in the expansion joint, so as to ensure the accuracy of collecting vibration signals.

[0038] Furthermore, since there may be differences in the vibration signals before and after the bridge expansion joint when the vehicle passes through the bridge expansion joint, vibration sensors with mirror-symmetrical positions and the same number can be deployed on both sides of the bridge expansion joint, so that the vibration signals when the vehicle passes through the expansion joint can be accurately measured, and two vibration signals can be simultaneously collected through the vibration signals collected on both sides. Furthermore, the axle weight can be obtained separately according to the two signals, achieving the effect of accurately determining the axle weight.

[0039] Optionally, it further includes a data monitoring center, the data monitoring center is connected to the data processing device, and is used to receive the load of each detection area and generate an alarm message when the load in the detection area is greater than the weight threshold.

[0040] It should be noted that the data monitoring center can detect the load of each detection area calculated in the data processing device in real time, determine whether there is an abnormality in the dynamic load of each detection area according to the data monitoring center, and send an alarm message when there is an abnormality, so as to complete the detection of the dynamic load information at any position on the bridge.

[0041] Specifically, after determining the axle weight of the target axle, the axle weight can be stored in the storage queue in the detection area, and all the axle weight data stored in the storage queue can be added up to obtain the load value of the detection area at the current moment. Then, the current load value is compared with the weight threshold. When the current load value is greater than the weight threshold, it indicates that the load of the current detection area is large and the bridge is at risk. An alarm message needs to be sent to prompt the staff to control the vehicle, so as to ensure the safety of the bridge.

[0042] Optionally, the data processing device is further configured to, when the vibration signals obtained by different vibration signal detection devices have the same phase but different amplitudes, screen and retain the vibration signal corresponding to the maximum amplitude.

[0043] Specifically, since there are multiple lanes in the bridge, after a vehicle enters a certain lane, when the vibration signal detection device in that lane detects a vibration signal, other vibration signal detection devices adjacent to the vibration signal detection device may also collect the vibration signal. At this time, the vibration signals in other vibration signal detection devices can be deleted according to the amplitude, so as to ensure that the vibration signals emitted by vehicles in the wrong lane are not collected.

[0044] According to an embodiment of the present application, a method for monitoring the dynamic load of a bridge is provided. Figure 4 It is a flowchart of an optional method for monitoring the dynamic load of a bridge according to an embodiment of the present application, as Figure 4 shown. The process of this method may include the following steps:

[0045] Step S401, obtain the incoming vibration information of the axle entering the detection area based on the vibration signal detection device on the vehicle incoming side of the detection area, and obtain the outgoing vibration information of the axle leaving the detection area through the vibration signal detection device located on the vehicle outgoing side of the detection area. Among them, the vibration information includes the vibration signal of the axle and the identification information of the detection area, and the vibration signal detection device includes a sensor array.

[0046] Specifically, Figure 2 It is a schematic diagram of an optional setting style of a system for monitoring the dynamic load of a bridge according to an embodiment of the present application, as Figure 2As shown in the figure, at the entrance and exit of each detection area, vibration signal detection devices are installed. Each vibration signal detection device includes a sensor array, which is composed of multiple vibration sensors. When a vehicle enters the detection area, it will pass through the vibration signal detection device on the entrance side. At this time, the sensor array in the vibration signal detection device on the entrance side will collect the vibration signals generated by each axle in the vehicle, store each vibration signal according to the dimension of the axle, determine the axle weight corresponding to each vibration signal according to the corresponding relationship between the preset vibration signal and the axle weight, and store the axle weight in the storage queue of the detection area.

[0047] Step S402: Calculate the weight of the axles entering the detection area based on the incoming vibration information, calculate the weight of the axles leaving the detection area based on the outgoing vibration information, and determine the load of the detection area based on the weight of the axles entering and leaving.

[0048] Specifically, when the vibration signal detection device on the exit side of the detection area collects the vibration signal generated when the axle exits, it will also determine the weight information of the axle according to the vibration signal. At this time, there is no need to match the vibration signal generated when the vehicle enters the detection area, and directly delete the axle weight information in the storage queue of the detection area that is the same as the weight information of the axle, so as to complete the data update of the storage queue in the detection area, and thus the dynamic load of the detection area can be determined according to the total axle weight in the storage queue at each moment.

[0049] Optionally, in the bridge dynamic load monitoring method provided in the embodiment of the present application, the method further includes: after calculating the load of the detection area based on the weight of the axles entering and leaving, deleting the records of the weight of the axles entering and leaving that match in pairs in the detection area; and for the weight of the axles entering and leaving that do not match in pairs, when the storage duration of their records exceeds the preset value, delete them.

[0050] Specifically, after the axle exits the detection area, it is necessary to delete the weight information of the axle in the storage queue of the detection area, so as to update the total axle weight in the detection area, and further achieve the effect of determining the dynamic load in the detection area according to the total axle weight.

[0051] It should be noted that since vehicle lane changes may occur, resulting in the incorrect deletion of the axle weight that should have been deleted from detection area A and the axle weight in detection area B being wrongly deleted, and the axle weight in detection area A not being deleted, therefore, the generation time of each axle weight can be determined according to the identification information, and the axle weight with a generation time greater than the preset value can be deleted, thereby improving the detection value of the total axle weight in each detection area, and thus improving the calculation accuracy of the dynamic load.

[0052] Optionally, in the bridge dynamic load monitoring method provided by the embodiments of the present application, before calculating the axle weight of the vehicle entering the detection area based on the incoming vibration information, the method further includes: using multiple test vehicles with different axle weights and different vehicle speeds to pass through the vibration signal detection device to obtain multiple test vibration signals; obtaining the weight of each axle of each test vehicle through the weighing device to obtain multiple test weights; associating and storing the multiple test weights and the test vibration signals corresponding to each test weight in a table to obtain a preset comparison table; and performing the step of calculating the axle weight of the vehicle entering the detection area based on the incoming vibration information according to the preset comparison table.

[0053] Specifically, before calculating the axle weight of the vehicle entering the detection area based on the incoming vibration information, it is necessary to measure the axle weights of multiple vehicles with different axle weights respectively, and make each vehicle pass through the vibration signal detection device, so as to obtain the pattern of the vibration signal corresponding to each axle weight and the amplitude of the vibration signal. Furthermore, a comparison table between the vibration information and the axle weight can be generated, and after obtaining the vibration information of the target axle, the number of axles and the axle weight can be determined according to the relationship in the comparison table.

[0054] It should be noted that since there may be multiple lanes on the target bridge, as Figure 3 shown, the bridge sections 21, 22, and 23 belong to different lanes on the bridge respectively, and a vibration signal detection device is provided at the entrance of each lane. When the vehicle passes through the vibration signal detection devices arranged on different lanes, the generated vibration signals may be different. Therefore, it is necessary to collect the vibration signals of multiple vehicles on each lane respectively, so as to generate the corresponding relationship between the vibration information and the axle weight on different lanes.

[0055] Similarly, since the vibration signal detection device is arranged on the expansion joint of the bridge, and there are multiple expansion joints on each lane, in order to ensure the accuracy of measuring the axle weight, multiple test vehicles can also be made to pass through the sensor arrays on each expansion joint respectively, so as to obtain the corresponding relationship between the vibration information and the axle weight of each expansion joint, thereby improving the accuracy rate of determining the axle weight.

[0056] Optionally, in the bridge dynamic load monitoring method provided in the embodiments of the present application, the sensor array includes a plurality of vibration sensors. The sensor array is arranged in the expansion joint of the bridge. The vibration information of the axle entering the detection area detected based on the vibration signal detection device on the vehicle entering side of the detection area includes: obtaining the sub-vibration signals collected by each vibration sensor in the sensor array to obtain a plurality of sub-vibration signals; superimposing the sub-vibration signals sent by the vibration sensors located on the first side of the expansion joint to obtain a first sub-vibration signal; superimposing the sub-vibration signals sent by the vibration sensors located on the second side of the expansion joint to obtain a second sub-vibration signal; combining the first sub-vibration signal and the second sub-vibration signal to obtain an updated first vibration signal.

[0057] Specifically, after the vibration signal is collected by the vibration sensors in the sensor array, in order to strengthen the collected vibration signal, at this time, the vibration signals collected by the vibration sensors on the same side in the bridge expansion joint can be added to obtain two strengthened vibration signals, and these two strengthened vibration signals are determined as the vibration information generated when the axle passes through the vibration signal detection device.

[0058] It should be noted that for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present application is not limited by the described action sequence, because according to the present application, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present application.

[0059] Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by means of software plus a necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases, the former is a better implementation method. Based on such an understanding, the technical solution of the present 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 for causing a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods of the various embodiments of the present application.

[0060] According to an embodiment of the present application, there is also provided a bridge dynamic load monitoring device for implementing the above bridge dynamic load monitoring method. Figure 5It is a schematic diagram of an optional bridge dynamic load monitoring device according to an embodiment of the present application. As Figure 5 shown, the bridge dynamic load monitoring device may include:

[0061] A detection unit 51, configured to obtain the vibration information of the axles entering the detection area based on the vibration signal detection device on the vehicle entering side of the detection area, and obtain the vibration information of the axles leaving the detection area through the vibration signal detection device located on the vehicle leaving side of the detection area. Among them, the vibration information includes the vibration signal of the axle and the identification information of the detection area, and the vibration signal detection device includes a sensor array;

[0062] A calculation unit 52, configured to calculate the weight of the entering axles entering the detection area according to the entering vibration information, calculate the weight of the leaving axles leaving the detection area according to the leaving vibration information, and determine the load of the detection area according to the weight of the entering axles and the weight of the leaving axles.

[0063] In an exemplary embodiment, the device further includes: a deletion unit, configured to delete the records of the weight of the entering axles and the weight of the leaving axles that match in pairs in the detection area after calculating the load of the detection area according to the weight of the entering axles and the weight of the leaving axles; and, for the weight of the entering axles and the weight of the leaving axles that do not match in pairs, when the storage duration of their records exceeds a preset value, delete them.

[0064] In an exemplary embodiment, the device further includes: a test unit, configured to use multiple test vehicles with different axle weights and different vehicle speeds to pass through the vibration signal detection device to obtain multiple test vibration signals; an acquisition unit, configured to obtain the weight of each axle of each test vehicle through a weighing device to obtain multiple test weights; a storage unit, configured to store the multiple test weights and the test vibration signals corresponding to each test weight in association in a table to obtain a preset comparison table; an execution unit, configured to execute the step of calculating the weight of the entering axles entering the detection area according to the entering vibration information according to the preset comparison table.

[0065] Optionally, the sensor array includes multiple vibration sensors, the sensor array is arranged in the expansion joint of the bridge, and the detection unit 51 includes: an acquisition module, configured to acquire the sub-vibration signals collected by each vibration sensor in the sensor array to obtain multiple sub-vibration signals; a first superposition module, configured to superpose the sub-vibration signals sent by the vibration sensors located on the first side of the expansion joint to obtain a first sub-vibration signal; a second superposition module, configured to superpose the sub-vibration signals sent by the vibration sensors located on the second side of the expansion joint to obtain a second sub-vibration signal; a combination module, configured to combine the first sub-vibration signal and the second sub-vibration signal to obtain an updated first vibration signal.

[0066] It should be noted here that the examples and application scenarios implemented by the above modules and the corresponding steps are the same, but are not limited to the content disclosed in the above embodiments. It should be noted that the above modules, as part of the device, can run in a hardware environment such as Figure 1 shown, and can be implemented by software or by hardware. Among them, the hardware environment includes a network environment.

[0067] According to another aspect of the embodiments of the present application, a storage medium is further provided. Optionally, in this embodiment, the above storage medium can be used to execute the program code of any one of the above bridge dynamic load monitoring methods in the embodiments of the present application.

[0068] Optionally, in this embodiment, the above storage medium can be located on at least one of multiple network devices in the network shown in the above embodiment.

[0069] Optionally, in this embodiment, the storage medium is set to store program code for executing the following steps: obtaining the vibration information of the axles entering the detection area through the vibration signal detection device on the vehicle entering side of the detection area, and obtaining the vibration information of the axles leaving the detection area through the vibration signal detection device located on the vehicle leaving side of the detection area. Among them, the vibration information includes the vibration signal of the axle and the identification information of the detection area, and the vibration signal detection device includes a sensor array; calculating the weight of the axles entering the detection area according to the vibration information of the axles entering, calculating the weight of the axles leaving the detection area according to the vibration information of the axles leaving, and determining the load of the detection area according to the weight of the axles entering and the weight of the axles leaving.

[0070] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be elaborated herein.

[0071] Optionally, in this embodiment, the above storage medium may include, but is not limited to: various media such as USB flash drives, ROMs, RAMs, mobile hard disks, magnetic disks, or optical discs that can store program code.

[0072] According to another aspect of the embodiments of the present application, an electronic device for implementing the above bridge dynamic load monitoring method is further provided. The electronic device can be a server, a terminal, or a combination thereof.

[0073] Figure 6 is a structural block diagram of an optional electronic device according to the embodiments of the present application, as shown in Figure 6 shown, including a processor 602, a communication interface 604, a memory 606, and a communication bus 608. Among them, the processor 602, the communication interface 604, and the memory 606 complete mutual communication through the communication bus 608. Among them,

[0074] A memory 606 for storing a computer program;

[0075] A processor 602, when executing the computer program stored on the memory 606, implements the following steps: obtaining, based on a vibration signal detection device on the vehicle entry side of a detection area, vibration information of an axle entering the detection area, and obtaining, through a vibration signal detection device on the vehicle exit side of the detection area, vibration information of an axle exiting the detection area, wherein the vibration information includes the vibration signal of the axle and the identification information of the detection area, and the vibration signal detection device includes a sensor array; calculating the weight of the entering axle entering the detection area according to the entering vibration information, calculating the weight of the exiting axle exiting the detection area according to the exiting vibration information, and determining the load of the detection area according to the weight of the entering axle and the weight of the exiting axle.

[0076] Optionally, the communication bus can be a PCI (Peripheral Component Interconnect) bus, an EISA (Extended Industry Standard Architecture) bus, etc. The communication bus can be divided into an address bus, a data bus, a control bus, etc. For the sake of convenience of representation, Figure 6 only a thick line is used to represent it in the figure, but it does not mean that there is only one bus or one type of bus. The communication interface is used for communication between the above-mentioned electronic device and other devices.

[0077] The memory can include a RAM, and can also include a non-volatile memory, for example, at least one disk memory. Optionally, the memory can also be at least one storage device located far from the aforementioned processor.

[0078] The above-mentioned processor can be a general-purpose processor, which can include but is not limited to: a CPU (Central Processing Unit), an NP (Network Processor), etc.; it can also be a DSP (Digital Signal Processing), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0079] Optionally, for specific examples in this embodiment, reference may be made to the examples described in the above embodiments, and details thereof will not be elaborated herein.

[0080] Those of ordinary skill in the art can understand that Figure 6 the structure shown is only schematic. The device for implementing the above bridge dynamic load monitoring method may be a terminal device, which may be a smart phone (such as an Android phone, an iOS phone, etc.), a tablet computer, a personal digital assistant, and mobile Internet devices (MIDs), a PAD, or other terminal devices. Figure 6 It does not limit the structure of the above electronic device. For example, the electronic device may further include more or fewer components (such as a network interface, a display device, etc.) than those shown Figure 6 in the figure, or have a different configuration from that shown Figure 6 in the figure.

[0081] Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing the relevant hardware of the terminal device through a program. The program can be stored in a computer-readable storage medium, and the storage medium may include: a flash drive, a ROM, a RAM, a magnetic disk, or an optical disc, etc.

[0082] The serial numbers of the embodiments of the present application are only for description and do not represent the advantages or disadvantages of the embodiments.

[0083] If the integrated unit in the above embodiments is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in the above computer-readable storage medium. Based on such an understanding, the technical solution of the present 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. The computer software product is stored in the storage medium and includes several instructions for causing one or more computer devices (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present application.

[0084] In the above embodiments of the present application, the descriptions of the various embodiments have their own focuses. For the parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0085] In several embodiments provided by the present application, it should be understood that the disclosed client can be implemented in other ways. Among them, the device embodiments described above are only illustrative. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection of units or modules can be in electrical or other forms.

[0086] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution provided in this embodiment.

[0087] In addition, each functional unit in various embodiments of the present application can be integrated in a processing unit, or each unit can exist physically alone, or at least two units can be integrated in one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

[0088] The above is only the preferred embodiment of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A bridge dynamic load monitoring system, characterized in that, A bridge divided into multiple detection areas, with vibration signal detection devices installed on both the vehicle entry side and the vehicle exit side of each detection area. Among them, the bridge dynamic load monitoring system includes the vibration signal detection devices and a data processing device, and the vibration signal detection devices include a sensor array; Among them, the vibration signal detection device located on the vehicle entry side of the detection area is used to obtain the entry vibration information of the axle entering the detection area, and the vibration signal detection device located on the vehicle exit side of the detection area is used to obtain the exit vibration information of the axle exiting the detection area. Among them, the vibration information includes the vibration signal of the axle and the identification information of the detection area; the data processing device is electrically connected to the vibration signal detection device, and is used to calculate the weight of the entry axle entering the detection area according to the entry vibration information, calculate the weight of the exit axle exiting the detection area according to the exit vibration information, and determine the load of the detection area according to the weight of the entry axle and the weight of the exit axle; When the axle enters the detection area within the lane, determine the axle weight of the axle in the current detection area according to the entry vibration signal; When the axle enters the next detection area of the current detection area, determine the axle weight of the axle in the next detection area according to the exit vibration signal, and directly delete the axle weight in the current detection area that is the same as the axle weight in the next detection area without matching the vibration signal generated when the vehicle enters the detection area; And when the vehicle enters other detection areas except the last detection area, determine the load of the current detection area according to the axle weight of the axle entering the current detection area and the axle weight of the axle entering the next detection area of the current detection area; The data processing device is further used to, when the phases of the vibration signals obtained by different vibration signal detection devices are the same and the amplitudes are different, screen and retain the vibration signal corresponding to the maximum amplitude.

2. The bridge dynamic load monitoring system according to claim 1, wherein The detection areas are divided according to the lanes and expansion joints on the bridge.

3. The bridge dynamic load monitoring system according to claim 1, characterized in that, Within the same lane, the vibration signal detection device on the vehicle exit side of the Nth detection area and the vibration signal detection device on the vehicle entry side of the N+1th detection area are the same; where N is a positive integer and N is less than the number of detection areas within the same lane.

4. The bridge dynamic load monitoring system according to claim 2, characterized in that, Each sensor array includes a plurality of vibration sensors, the vibration sensors are electrically connected to the data processing device, and the plurality of vibration sensors are symmetrically distributed on two side walls of the expansion joint.

5. The bridge dynamic load monitoring system according to claim 1, characterized in that, It further includes a data monitoring center, which is connected to the data processing device and is used to receive the load of each detection area and generate an alarm message when the load within the detection area is greater than the weight threshold.

6. A bridge dynamic load monitoring method based on the bridge dynamic load monitoring system according to any one of claims 1-5, characterized in that, Including: The vibration signal detection device on the vehicle entry side based on the detection area acquires the entry vibration information of the axle entering the detection area, and the vibration signal detection device on the vehicle exit side located in the detection area acquires the exit vibration information of the axle exiting the detection area. Among them, the vibration information includes the vibration signal of the axle and the identification information of the detection area, and the vibration signal detection device includes a sensor array; Calculate the entry axle weight of the axle entering the detection area according to the entry vibration information, calculate the exit axle weight of the axle exiting the detection area according to the exit vibration information, and determine the load of the detection area according to the entry axle weight and the exit axle weight. Among them, determine the axle weight of the axle in the next detection area according to the exit vibration signal, and directly delete the axle weight in the current detection area that is the same as the axle weight in the next detection area without matching the vibration signal generated when the vehicle enters the detection area; The method further includes, when the phases of the vibration signals acquired by different vibration signal detection devices are the same and the amplitudes are different, screening and retaining the vibration signal corresponding to the maximum amplitude.

7. The bridge dynamic load monitoring method according to claim 6, wherein It also includes: After calculating the load of the detection area according to the entry axle weight and the exit axle weight, delete the records of the entry axle weight and the exit axle weight that are matched in pairs in the detection area; and for the entry axle weight and the exit axle weight that are not matched in pairs, when the storage duration of their records exceeds a preset value, delete them.

8. The bridge dynamic load monitoring method according to claim 6, wherein Before calculating the entry axle weight of the axle entering the detection area according to the entry vibration information, the method further includes: using multiple test vehicles with different axle weights and different vehicle speeds to pass through the vibration signal detection device to obtain multiple test vibration signals; Obtain the weight of each axle of each test vehicle through a weighing device to obtain multiple test weights; associate and store the multiple test weights and the test vibration signals corresponding to each test weight in a table to obtain a preset comparison table; Execute the step of calculating the entry axle weight of the axle entering the detection area according to the entry vibration information based on the preset comparison table.

9. The method for monitoring the dynamic load of a bridge according to claim 6, wherein The sensor array includes multiple vibration sensors. The sensor array is arranged in the expansion joint of the bridge. The vibration signal detection device on the vehicle entry side based on the detection area acquires the entry vibration information of the axle entering the detection area, including: Acquire the sub-vibration signals collected by each vibration sensor in the sensor array to obtain multiple sub-vibration signals; Superimpose the sub-vibration signals sent by the vibration sensors on the first side of the expansion joint to obtain a first sub-vibration signal; Superimpose the sub-vibration signals sent by the vibration sensors on the second side of the expansion joint to obtain a second sub-vibration signal; Combine the first sub-vibration signal and the second sub-vibration signal to obtain an updated first vibration signal.

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