Railway bridge load weighing system and method thereof

Abstract

The invention provides a railway bridge load weighing system and method, and the method comprises the steps: carrying out the signal conversion of an acquired mechanical vibration signal, and obtaining a corresponding mechanical vibration amount; the mechanical vibration quantity is used for determining whether a train passes the railroad bridge or not; when the train passes through the railroad bridge, a deflection deformation signal of the railroad bridge is collected; performing signal conversion on the deflection deformation signal to obtain corresponding bridge deformation data; and according to the bridge deformation data, determining a bridge load when the train passes through the railway bridge. When the train passes through the railroad bridge, the deflection deformation signal of the railroad bridge is collected, and then the bridge load of the railroad bridge when the train passes through is determined, so that the accuracy and stability of measurement are improved, and the problems of unstable measurement, large occupied area, high construction difficulty and inconvenient maintenance in the traditional weight measuring technology are solved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of railway special equipment manufacturing, and in particular to a railway bridge load weighing system and method thereof. Background Art

[0002] Railway transportation occupies an important position in the national economy and is a key force in promoting economic and social development. However, if freight trains cause serious accidents such as broken axles, axle cutting, track climbing, and even train overturning due to overloading, it will pose a great threat to railway transportation safety. In recent years, thanks to the advancement of railway informatization construction and the rapid development of information technology, railway safety monitoring systems have played an increasingly important role in ensuring driving safety.

[0003] At present, railway weighing technology has many shortcomings: it mainly relies on traditional equipment such as load-bearing platforms, weighing sensors and weighing display instruments, which occupy a large area and are difficult to construct and install. Not only is the maintenance cost high, but the weighing method using these traditional equipment is cumbersome to operate, and the measured values ​​are unstable, making it impossible to achieve accurate and efficient measurement. Summary of the invention

[0004] The disclosed embodiments provide a railway bridge load weighing system and method thereof, which are used to overcome the problems of unstable measurement, large floor space, high construction difficulty and inconvenient maintenance existing in traditional weighing technologies.

[0005] In a first aspect, the present invention provides a railway bridge load measurement system, comprising: a vibration sensor, a deflection sensor and a controller electrically connected to a data acquisition unit; the vibration sensor and the deflection sensor are arranged at a detection point of the railway bridge;

[0006] The vibration sensor is used to collect mechanical vibration signals;

[0007] The deflection sensor is used to collect the deflection deformation signal of the railway bridge;

[0008] The data acquisition unit is used to perform signal conversion on the mechanical vibration signal and the deflection deformation signal to obtain corresponding mechanical vibration amount and deflection deformation data;

[0009] The controller is used to determine the bridge load when a train passes through the railway bridge based on the bridge deformation data.

[0010] Optionally, it further comprises: a strain sensor connected to the data acquisition unit;

[0011] The strain sensor is used to collect the strain signal of the railway bridge.

[0012] Optionally, the data acquisition unit includes an analog-to-digital converter and a digital signal processing chip that are electrically connected;

[0013] The analog-to-digital converter is used to convert the mechanical vibration signal, the deflection deformation signal and the strain signal into a mechanical vibration data stream, a deflection deformation data stream and a strain data stream respectively after amplification;

[0014] The digital signal processing chip is used to perform de-false filtering on the mechanical vibration data stream, the deflection deformation data stream and the strain data stream respectively to obtain the mechanical vibration amount, the deflection deformation data and the strain data.

[0015] Optionally, the controller further comprises: an electrically connected display device.

[0016] In a second aspect, the present invention provides a railway bridge load weighing method, which is applied to the railway bridge load weighing system as described in the first aspect; the method comprises:

[0017] Performing signal conversion on the collected mechanical vibration signal to obtain a corresponding mechanical vibration amount; the mechanical vibration amount is used to determine whether a train passes through a railway bridge;

[0018] When the train passes through the railway bridge, collecting a deflection deformation signal of the railway bridge;

[0019] Performing signal conversion on the deflection deformation signal to obtain corresponding bridge deformation data;

[0020] The bridge load when the train passes through the railway bridge is determined based on the bridge deformation data.

[0021] Optionally, performing signal conversion on the collected mechanical vibration signal to obtain a corresponding mechanical vibration amount includes:

[0022] converting the mechanical vibration signal into a mechanical vibration data stream after amplification;

[0023] Performing anti-false filtering on the mechanical vibration data stream to obtain the mechanical vibration amount;

[0024] The deflection deformation signal is converted to obtain corresponding bridge deformation data, including:

[0025] The deflection deformation signal is amplified and converted into a bridge deformation data stream;

[0026] The bridge deformation data stream is subjected to false removal filtering to obtain the bridge deformation data.

[0027] Optionally, determining the bridge load when the train passes through the railway bridge according to the bridge deformation data includes:

[0028] Performing curve fitting on the bridge deformation data to generate a bridge deformation curve;

[0029] Extracting the peak value of the bridge deformation curve to obtain the maximum deflection;

[0030] The bridge load is obtained by using a preset load calculation formula in combination with the maximum deflection and bridge foundation properties.

[0031] Optionally, after determining the bridge load when the train passes through the railway bridge according to the bridge deformation data, the method further includes:

[0032] Based on the bridge load, combined with the collected strain data, the mechanical vibration amount and the bridge deformation data, the information of all trains passing through the railway bridge is determined.

[0033] Optionally, the load calculation formula is specifically:

[0034]

[0035] Among them, P is the bridge load, E is the elastic modulus of the railway bridge, I is the section inertia moment of the railway bridge, δ max is the maximum deflection, L is the moment of inertia of the railway bridge, and L is the span of the railway bridge.

[0036] In a third aspect, the present invention provides an electronic device, comprising a processor and a memory, wherein the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, the steps in the method provided in the second aspect are performed.

[0037] In a fourth aspect, the present invention provides a storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, runs the steps of the method provided in the second aspect above.

[0038] In a fifth aspect, the present invention provides a computer program product, comprising a computer program, which, when executed by a processor, runs the steps of the method provided in the second aspect.

[0039] It can be seen from the above technical solutions that the present invention has the following advantages:

[0040] The present invention provides a railway bridge load measurement system and method, the method comprising: performing signal conversion on the collected mechanical vibration signal to obtain a corresponding mechanical vibration amount; the mechanical vibration amount is used to determine whether there is a train passing through the railway bridge; when there is a train passing through the railway bridge, collecting the deflection deformation signal of the railway bridge; performing signal conversion on the deflection deformation signal to obtain corresponding bridge deformation data; and determining the bridge load when the train passes through the railway bridge according to the bridge deformation data. The deflection deformation signal of the railway bridge is collected when the train passes through the railway bridge, and then the bridge load of the railway bridge when the train passes through is determined, thereby improving the accuracy and stability of measurement, overcoming the problems of unstable measurement, large floor space, high construction difficulty and inconvenient maintenance in traditional weight measurement technology. The deflection deformation signal of the railway bridge is collected by a deflection sensor when the train passes through the railway bridge, and then the bridge load of the railway bridge when the train passes through is determined, thereby improving the accuracy and stability of measurement, overcoming the problems of unstable measurement, large floor space, high construction difficulty and inconvenient maintenance in traditional weight measurement technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0042] Figure 1 The structural diagram of the railway bridge load measurement provided by the first embodiment of the present disclosure is exemplarily shown;

[0043] Figure 2 The following is a flowchart showing the steps of the railway bridge load measurement method provided in the second embodiment of the present disclosure. DETAILED DESCRIPTION

[0044] The embodiment of the present invention provides a railway bridge load weighing system and method thereof, which are used to overcome the problems of unstable measurement, large floor space, high construction difficulty and inconvenient maintenance existing in traditional weighing technology.

[0045] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] Embodiment 1

[0047] See also Figure 1 , Figure 1 This is a schematic diagram of the structure of the railway bridge load measurement provided in the first embodiment of the present disclosure. The system includes:

[0048] A vibration sensor 101, a deflection sensor 102 and a controller 106 electrically connected to a data acquisition unit 104; the vibration sensor 101 and the deflection sensor 102 are arranged at a detection point of a railway bridge;

[0049] The vibration sensor 101 is used to collect mechanical vibration signals;

[0050] The deflection sensor 102 is used to collect the deflection deformation signal of the railway bridge;

[0051] The data acquisition unit 104 is used to perform signal conversion on the mechanical vibration signal and the deflection deformation signal to obtain corresponding mechanical vibration amount and deflection deformation data;

[0052] The controller 106 is used to determine the bridge load when the train passes through the railway bridge according to the bridge deformation data.

[0053] In an embodiment of the present invention, the vibration sensor 101 collects mechanical vibration signals, and when the vibration signal shows that there is a detection bridge where a train passes, the controller 106 triggers the deflection sensor 102 to collect the deflection deformation signal of the railway bridge, and then determines the railway load through the deflection deformation signal.

[0054] In an optional embodiment, it further comprises: a strain sensor 103 connected to the data acquisition unit;

[0055] The strain sensor 103 is used to collect the strain signal of the railway bridge.

[0056] In the embodiment of the present invention, the strain signal collected by the strain sensor 103 can be used to determine the number of wheels, wheel layout and speed of the train passing through the railway bridge, thereby providing data support for determining the wheel weight and axle weight of the passing train.

[0057] In an optional embodiment, the data acquisition unit 104 includes an analog-to-digital converter 1041 and a digital signal processing chip 1042 that are electrically connected;

[0058] The analog-to-digital converter 1041 is used to convert the mechanical vibration signal, the deflection deformation signal and the strain signal into a mechanical vibration data stream, a deflection deformation data stream and a strain data stream respectively after amplification;

[0059] The digital signal processing chip 1042 is used to perform anti-false filtering on the mechanical vibration data stream, the deflection deformation data stream and the strain data stream respectively to obtain the mechanical vibration amount, the deflection deformation data and the strain data.

[0060] In an optional embodiment, the controller 106 further includes: an electrically connected display device 105 .

[0061] In the embodiment of the present invention, the display device 105 may be used to display all data analysis results of the display controller 106 including wheel weight, axle and railway load.

[0062] A railway bridge load weighing system provided by an embodiment of the present invention comprises: a vibration sensor 101, a deflection sensor 102 and a controller 106 electrically connected to a data acquisition unit 104; the vibration sensor 101 and the deflection sensor 102 are arranged at a detection point of the railway bridge; the vibration sensor 101 is used to collect mechanical vibration signals; the deflection sensor 102 is used to collect deflection deformation signals of the railway bridge; the data acquisition unit 104 is used to perform signal conversion on the mechanical vibration signal and the deflection deformation signal to obtain corresponding mechanical vibration quantities and deflection deformation data; the controller 106 is used to determine the bridge load when a train passes through the railway bridge according to the bridge deformation data. When a train passes through the railway bridge, the deflection deformation signal of the railway bridge is collected by the deflection sensor 102, and then the bridge load of the railway bridge when the train passes through is determined, thereby improving the accuracy and stability of the measurement, and overcoming the problems of unstable measurement, large floor space, high construction difficulty and inconvenient maintenance existing in traditional weighing technology.

[0063] Embodiment 2

[0064] See also Figure 2 , Figure 2 The flowchart of the railway bridge load weighing method provided in the second embodiment of the present disclosure is applied to a railway bridge load weighing system as mentioned in the first embodiment; the steps include:

[0065] S201, performing signal conversion on the collected mechanical vibration signal to obtain a corresponding mechanical vibration amount; the mechanical vibration amount is used to determine whether there is a train passing through a railway bridge;

[0066] In an optional embodiment, performing signal conversion on the collected mechanical vibration signal to obtain the corresponding mechanical vibration amount includes:

[0067] converting the mechanical vibration signal into a mechanical vibration data stream after amplification;

[0068] The mechanical vibration data stream is subjected to anti-false filtering to obtain the mechanical vibration amount.

[0069] In an embodiment of the present invention, the analog-to-digital converter in the railway bridge load measurement system converts the mechanical vibration signal into a mechanical vibration data stream after amplification, and then the digital signal processing chip performs anti-false filtering on the mechanical vibration data stream to obtain the mechanical vibration amount.

[0070] S202, when the train passes through the railway bridge, collecting a deflection deformation signal of the railway bridge;

[0071] In the embodiment of the present invention, when the controller determines through the mechanical vibration amount that a train is passing through a railway bridge, the controller triggers the collection action of the deflection sensor, and obtains the deflection deformation signal of the railway bridge through the deflection sensor.

[0072] S203, performing signal conversion on the deflection deformation signal to obtain corresponding bridge deformation data;

[0073] In an optional embodiment, performing signal conversion on the deflection deformation signal to obtain corresponding bridge deformation data includes:

[0074] The deflection deformation signal is amplified and converted into a bridge deformation data stream;

[0075] The bridge deformation data stream is subjected to false removal filtering to obtain the bridge deformation data.

[0076] Since the deflection deformation of the bridge may be relatively small, the deflection deformation signal directly collected may be relatively weak. Therefore, in the specific implementation, the deflection deformation signal needs to be amplified, and then the analog-to-digital converter converts the amplified deflection deformation signal into a bridge deformation data stream to improve the signal strength and recognizability. This ensures that the subsequent data processing and analysis are more accurate and reliable.

[0077] In addition, during the signal acquisition and conversion process, it may be affected by various noises and interferences, resulting in some false or abnormal data points in the bridge deformation data stream. If these false data points are not processed, they will cause errors or mislead the subsequent bridge deformation data analysis.

[0078] In order to remove these false data points, the digital signal processing chip in the embodiment of the present invention uses a false removal filtering technology to perform false removal filtering on the bridge deformation data stream to obtain bridge deformation data.

[0079] Among them, there are many methods of anti-false filtering, such as mean filtering, median filtering, wavelet filtering, etc.

[0080] S204: Determine the bridge load when the train passes through the railway bridge based on the bridge deformation data.

[0081] In an optional embodiment, determining the bridge load when the train passes through the railway bridge according to the bridge deformation data includes:

[0082] Performing curve fitting on the bridge deformation data to generate a bridge deformation curve;

[0083] Extracting the peak value of the bridge deformation curve to obtain the maximum deflection;

[0084] The bridge load is obtained by using a preset load calculation formula in combination with the maximum deflection and bridge foundation properties.

[0085] In the embodiment of the present invention, the load calculation formula is specifically:

[0086]

[0087] Among them, P is the bridge load, E is the elastic modulus of the railway bridge, I is the section inertia moment of the railway bridge, δ max is the maximum deflection, L is the moment of inertia of the railway bridge, and L is the span of the railway bridge.

[0088] In the specific implementation, the controller performs curve fitting on the bridge deformation data to generate a bridge deformation curve, and then analyzes the bridge deformation curve to identify and extract the peak of the curve to obtain the maximum deflection. Finally, the bridge load of the railway bridge is calculated by substituting the maximum deflection into the load calculation formula.

[0089] Typically, peak extraction methods involve finding local maxima in the curve or using peak detection algorithms such as maximum search or Gaussian smoothing techniques.

[0090] In an optional embodiment, after determining the bridge load when the train passes through the railway bridge according to the bridge deformation data, the method further includes:

[0091] Based on the bridge load, combined with the collected strain data, the mechanical vibration amount and the bridge deformation data, the information of all trains passing through the railway bridge is determined.

[0092] In an embodiment of the present invention, the number of wheels of the train is determined according to the pressure peak in the strain data to determine the wheelbase and running speed of the train; based on the wheelbase, the running speed, the mechanical vibration, the bridge deformation data, and the bridge load, a train dynamic load model is constructed to determine the wheel weight and axle weight of the train; in a preset train database, matching is performed based on the wheel weight, the axle weight and the wheelbase to obtain the information of all trains passing through the railway bridge.

[0093] Since the pressure exerted by each wheel on the bridge will cause an obvious strain signal, in the embodiment of the present invention, the controller can calculate the number of wheels of the train by analyzing the pressure peak in the strain data on the bridge. Then, the controller can further calculate the wheelbase of the train. Since the mechanical vibration amount has a certain relationship with the train speed, after determining the number of wheels and wheel layout of the train, the controller will use the mechanical vibration amount and bridge deformation data to calculate the travel speed of the train.

[0094] After determining the train's wheelbase, speed, mechanical vibration, bridge deformation data, and bridge load information, the controller will build a train dynamic load model based on this information. This model usually includes the dynamic changes in load distribution, wheel weight, and axle weight when the train is traveling on the bridge.

[0095] Finally, the controller matches the calculated wheel weight, axle weight and wheelbase with the data in the preset train database to determine the train information passing through the railway bridge.

[0096] The embodiment of the present invention provides a method for measuring the load of a railway bridge, the method comprising: performing signal conversion on the collected mechanical vibration signal to obtain a corresponding mechanical vibration amount; the mechanical vibration amount is used to determine whether there is a train passing through the railway bridge; when there is a train passing through the railway bridge, collecting the deflection deformation signal of the railway bridge; performing signal conversion on the deflection deformation signal to obtain corresponding bridge deformation data; and determining the bridge load when the train passes through the railway bridge according to the bridge deformation data. The deflection deformation signal of the railway bridge is collected when the train passes through the railway bridge, and then the bridge load of the railway bridge when the train passes through is determined, thereby improving the accuracy and stability of the measurement, and overcoming the problems of unstable measurement, large floor space, high construction difficulty and inconvenient maintenance existing in traditional weight measurement technology.

[0097] Embodiment 3

[0098] An embodiment of the present invention further provides an electronic device, including a memory and a processor, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the processor executes the steps of a railway bridge load measurement method of embodiment 2, which is applied to the railway bridge load measurement system mentioned in embodiment 1, and the method includes:

[0099] Performing signal conversion on the collected mechanical vibration signal to obtain a corresponding mechanical vibration amount; the mechanical vibration amount is used to determine whether a train passes through a railway bridge;

[0100] When the train passes through the railway bridge, collecting a deflection deformation signal of the railway bridge;

[0101] Performing signal conversion on the deflection deformation signal to obtain corresponding bridge deformation data;

[0102] The bridge load when the train passes through the railway bridge is determined based on the bridge deformation data.

[0103] In an optional embodiment, performing signal conversion on the collected mechanical vibration signal to obtain the corresponding mechanical vibration amount includes:

[0104] converting the mechanical vibration signal into a mechanical vibration data stream after amplification;

[0105] Performing anti-false filtering on the mechanical vibration data stream to obtain the mechanical vibration amount;

[0106] The deflection deformation signal is converted to obtain corresponding bridge deformation data, including:

[0107] The deflection deformation signal is amplified and converted into a bridge deformation data stream;

[0108] The bridge deformation data stream is subjected to false removal filtering to obtain the bridge deformation data.

[0109] In an optional embodiment, determining the bridge load when the train passes through the railway bridge according to the bridge deformation data includes:

[0110] Performing curve fitting on the bridge deformation data to generate a bridge deformation curve;

[0111] Extracting the peak value of the bridge deformation curve to obtain the maximum deflection;

[0112] The bridge load is obtained by using a preset load calculation formula in combination with the maximum deflection and bridge foundation properties.

[0113] In an optional embodiment, after determining the bridge load when the train passes through the railway bridge according to the bridge deformation data, the method further includes:

[0114] Based on the bridge load, combined with the collected strain data, the mechanical vibration amount and the bridge deformation data, the information of all trains passing through the railway bridge is determined.

[0115] In an optional embodiment, based on the bridge load, combined with the collected strain data, the mechanical vibration amount and the bridge deformation data, the information of all trains passing through the railway bridge is determined, including:

[0116] Determining the number of wheels of the train according to the pressure peak value in the strain data, so as to determine the wheelbase and running speed of the train;

[0117] Based on the wheelbase, the travel speed, the mechanical vibration amount, the bridge deformation data, and the bridge load, a train dynamic load model is constructed to determine the wheel weight and axle weight of the train;

[0118] In a preset train database, matching is performed based on the wheel weight, the axle weight and the wheelbase to obtain the information of all trains passing through the railway bridge.

[0119] In an optional embodiment, the load calculation formula is specifically:

[0120]

[0121] Among them, P is the bridge load, E is the elastic modulus of the railway bridge, I is the section inertia moment of the railway bridge, δ max is the maximum deflection, L is the moment of inertia of the railway bridge, and L is the span of the railway bridge.

[0122] Embodiment 4

[0123] The embodiment of the present invention further provides a computer storage medium on which a computer program is stored. When the computer program is executed by the processor, the steps of a railway bridge load measurement method of the second embodiment are implemented, and the method is applied to the railway bridge load measurement system mentioned in the first embodiment. The method includes:

[0124] Performing signal conversion on the collected mechanical vibration signal to obtain a corresponding mechanical vibration amount; the mechanical vibration amount is used to determine whether a train passes through a railway bridge;

[0125] When the train passes through the railway bridge, collecting a deflection deformation signal of the railway bridge;

[0126] Performing signal conversion on the deflection deformation signal to obtain corresponding bridge deformation data;

[0127] The bridge load when the train passes through the railway bridge is determined based on the bridge deformation data.

[0128] In an optional embodiment, performing signal conversion on the collected mechanical vibration signal to obtain the corresponding mechanical vibration amount includes:

[0129] converting the mechanical vibration signal into a mechanical vibration data stream after amplification;

[0130] Performing anti-false filtering on the mechanical vibration data stream to obtain the mechanical vibration amount;

[0131] The deflection deformation signal is converted to obtain corresponding bridge deformation data, including:

[0132] The deflection deformation signal is amplified and converted into a bridge deformation data stream;

[0133] The bridge deformation data stream is subjected to false removal filtering to obtain the bridge deformation data.

[0134] In an optional embodiment, determining the bridge load when the train passes through the railway bridge according to the bridge deformation data includes:

[0135] Performing curve fitting on the bridge deformation data to generate a bridge deformation curve;

[0136] Extracting the peak value of the bridge deformation curve to obtain the maximum deflection;

[0137] The bridge load is obtained by using a preset load calculation formula in combination with the maximum deflection and bridge foundation properties.

[0138] In an optional embodiment, after determining the bridge load when the train passes through the railway bridge according to the bridge deformation data, the method further includes:

[0139] Based on the bridge load, combined with the collected strain data, the mechanical vibration amount and the bridge deformation data, the information of all trains passing through the railway bridge is determined.

[0140] In an optional embodiment, based on the bridge load, combined with the collected strain data, the mechanical vibration amount and the bridge deformation data, the information of all trains passing through the railway bridge is determined, including:

[0141] Determining the number of wheels of the train according to the pressure peak value in the strain data, so as to determine the wheelbase and running speed of the train;

[0142] Based on the wheelbase, the travel speed, the mechanical vibration amount, the bridge deformation data, and the bridge load, a train dynamic load model is constructed to determine the wheel weight and axle weight of the train;

[0143] In a preset train database, matching is performed based on the wheel weight, the axle weight and the wheelbase to obtain the information of all trains passing through the railway bridge.

[0144] In an optional embodiment, the load calculation formula is specifically:

[0145]

[0146] Among them, P is the bridge load, E is the elastic modulus of the railway bridge, I is the section inertia moment of the railway bridge, δ max is the maximum deflection, L is the moment of inertia of the railway bridge, and L is the span of the railway bridge.

[0147] Embodiment 5

[0148] The embodiment of the present invention further provides a computer program product, on which a computer program is stored. When the computer program is executed by the processor, the steps of a railway bridge load weighing method of the second embodiment are implemented, and the method is applied to the railway bridge load weighing system mentioned in the first embodiment. The method includes:

[0149] Performing signal conversion on the collected mechanical vibration signal to obtain a corresponding mechanical vibration amount; the mechanical vibration amount is used to determine whether a train passes through a railway bridge;

[0150] When the train passes through the railway bridge, collecting a deflection deformation signal of the railway bridge;

[0151] Performing signal conversion on the deflection deformation signal to obtain corresponding bridge deformation data;

[0152] The bridge load when the train passes through the railway bridge is determined based on the bridge deformation data.

[0153] In an optional embodiment, performing signal conversion on the collected mechanical vibration signal to obtain the corresponding mechanical vibration amount includes:

[0154] converting the mechanical vibration signal into a mechanical vibration data stream after amplification;

[0155] Performing anti-false filtering on the mechanical vibration data stream to obtain the mechanical vibration amount;

[0156] The deflection deformation signal is converted to obtain corresponding bridge deformation data, including:

[0157] The deflection deformation signal is amplified and converted into a bridge deformation data stream;

[0158] The bridge deformation data stream is subjected to false removal filtering to obtain the bridge deformation data.

[0159] In an optional embodiment, determining the bridge load when the train passes through the railway bridge according to the bridge deformation data includes:

[0160] Performing curve fitting on the bridge deformation data to generate a bridge deformation curve;

[0161] Extracting the peak value of the bridge deformation curve to obtain the maximum deflection;

[0162] The bridge load is obtained by using a preset load calculation formula in combination with the maximum deflection and bridge foundation properties.

[0163] In an optional embodiment, after determining the bridge load when the train passes through the railway bridge according to the bridge deformation data, the method further includes:

[0164] Based on the bridge load, combined with the collected strain data, the mechanical vibration amount and the bridge deformation data, the information of all trains passing through the railway bridge is determined.

[0165] In an optional embodiment, based on the bridge load, combined with the collected strain data, the mechanical vibration amount and the bridge deformation data, the information of all trains passing through the railway bridge is determined, including:

[0166] Determining the number of wheels of the train according to the pressure peak value in the strain data, so as to determine the wheelbase and running speed of the train;

[0167] Based on the wheelbase, the travel speed, the mechanical vibration amount, the bridge deformation data, and the bridge load, a train dynamic load model is constructed to determine the wheel weight and axle weight of the train;

[0168] In a preset train database, matching is performed based on the wheel weight, the axle weight and the wheelbase to obtain the information of all trains passing through the railway bridge.

[0169] In an optional embodiment, the load calculation formula is specifically:

[0170]

[0171] Among them, P is the bridge load, E is the elastic modulus of the railway bridge, I is the section inertia moment of the railway bridge, δ max is the maximum deflection, L is the moment of inertia of the railway bridge, and L is the span of the railway bridge.

[0172] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0173] In the several embodiments provided in the present application, it should be understood that the methods, devices, electronic devices and storage media disclosed in the present invention can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as 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 mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0174] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0175] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0176] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially 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 a readable storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned readable storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0177] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A railway bridge load measurement system, characterized in that: include: A vibration sensor, a deflection sensor and a controller electrically connected to the data acquisition unit; the vibration sensor and the deflection sensor are arranged at a detection point of the railway bridge; The vibration sensor is used to collect mechanical vibration signals; The deflection sensor is used to collect the deflection deformation signal of the railway bridge; The data acquisition unit is used to perform signal conversion on the mechanical vibration signal and the deflection deformation signal to obtain corresponding mechanical vibration amount and deflection deformation data; The controller is used to determine the bridge load when a train passes through the railway bridge based on the bridge deformation data.

2. The railway bridge load measurement system according to claim 1, characterized in that: Also includes: a strain sensor connected to the data acquisition unit; The strain sensor is used to collect the strain signal of the railway bridge.

3. The railway bridge load measurement system according to claim 2, characterized in that: The data acquisition unit includes an analog-to-digital converter and a digital signal processing chip that are electrically connected; The analog-to-digital converter is used to convert the mechanical vibration signal, the deflection deformation signal and the strain signal into a mechanical vibration data stream, a deflection deformation data stream and a strain data stream respectively after amplification; The digital signal processing chip is used to perform de-false filtering on the mechanical vibration data stream, the deflection deformation data stream and the strain data stream respectively to obtain the mechanical vibration amount, the deflection deformation data and the strain data.

4. The railway bridge load measurement system according to claim 1, characterized in that: The controller also includes: an electrically connected display device.

5. A method for measuring the load of a railway bridge, characterized in that: Applicable to the railway bridge load measuring system as claimed in claims 1 to 4; the method comprises: Performing signal conversion on the collected mechanical vibration signal to obtain a corresponding mechanical vibration amount; the mechanical vibration amount is used to determine whether a train passes through a railway bridge; When the train passes through the railway bridge, collecting a deflection deformation signal of the railway bridge; Performing signal conversion on the deflection deformation signal to obtain corresponding bridge deformation data; The bridge load when the train passes through the railway bridge is determined based on the bridge deformation data.

6. The railway bridge load measurement method according to claim 5, characterized in that: The collected mechanical vibration signal is converted to obtain the corresponding mechanical vibration amount, including: converting the mechanical vibration signal into a mechanical vibration data stream after amplification; Performing anti-false filtering on the mechanical vibration data stream to obtain the mechanical vibration amount; The deflection deformation signal is converted to obtain corresponding bridge deformation data, including: The deflection deformation signal is amplified and converted into a bridge deformation data stream; The bridge deformation data stream is subjected to false removal filtering to obtain the bridge deformation data.

7. The railway bridge load measurement method according to claim 5, characterized in that: Determining the bridge load when the train passes through the railway bridge according to the bridge deformation data includes: Performing curve fitting on the bridge deformation data to generate a bridge deformation curve; Extracting the peak value of the bridge deformation curve to obtain the maximum deflection; The bridge load is obtained by using a preset load calculation formula in combination with the maximum deflection and bridge foundation properties.

8. The railway bridge load measurement method according to claim 6, characterized in that: After determining the bridge load when the train passes through the railway bridge according to the bridge deformation data, the method further includes: Based on the bridge load, combined with the collected strain data, the mechanical vibration amount and the bridge deformation data, the information of all trains passing through the railway bridge is determined.

9. The railway bridge load measurement method according to claim 7, characterized in that: Based on the bridge load, combined with the collected strain data, the mechanical vibration amount and the bridge deformation data, information of all trains passing through the railway bridge is determined, including: Determining the number of wheels of the train according to the pressure peak value in the strain data, so as to determine the wheelbase and running speed of the train; Based on the wheelbase, the travel speed, the mechanical vibration amount, the bridge deformation data, and the bridge load, a train dynamic load model is constructed to determine the wheel weight and axle weight of the train; In a preset train database, matching is performed based on the wheel weight, the axle weight and the wheelbase to obtain the information of all trains passing through the railway bridge.

10. The railway bridge load measurement method according to claim 7, characterized in that: The load calculation formula is specifically: Among them, P is the bridge load, E is the elastic modulus of the railway bridge, I is the section inertia moment of the railway bridge, δ max is the maximum deflection, L is the moment of inertia of the railway bridge, and L is the span of the railway bridge.

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