Double-layer continuous reinforcement pavement slab health state vibration sensing method and device

Abstract

The invention relates to the technical field of pavement health monitoring, in particular to a double-layer continuous reinforcement pavement slab health state vibration sensing method and device based on a vibration sensing performance state monitoring and diagnosis system composed of an impact energy signal monitoring system and a mechanical vibration signal monitoring system. Two application paths of continuous multi-plate short-time rapid monitoring and diagnosis and important plate long-time stable monitoring and diagnosis are constructed, so that the manpower and time cost is reduced, and the bearing capacity of the continuous multi-plate overall composite structure is efficiently, accurately and rapidly judged; and the limitation of time and place is broken through, and long-term stable monitoring and diagnosis of the health state of the important plate are realized.

Description

Technical Field

[0001] The present application relates to the technical field of pavement health monitoring, and in particular to a method and device for vibration sensing of the health status of a double-layer continuously reinforced road slab. Background Art

[0002] Double-layer continuous reinforced pavement is a new rigid pavement structure. Specifically, two layers of continuous transverse and longitudinal steel bars are arranged in the concrete slab to cross the joints between the slabs. The upper longitudinal steel bars have a certain restraining effect on the transverse cracks caused by temperature shrinkage, dry shrinkage and load on the concrete slab. In addition to the above functions, the lower longitudinal steel bars can also better resist the bending and tensile stress at the bottom of the slab. Double-layer continuous reinforced pavement is a composite structure composed of a pavement slab, double-layer reinforcement and active crack control. Double-layer continuous reinforcement improves the overall strength of the surface slab, forming a continuous and flat driving surface. It is particularly suitable for roads that are subject to heavy traffic and frequent traffic, such as highways, industrial areas and airport runways.

[0003] Double-layer continuous reinforcement is mainly used for roads that bear heavy traffic and frequent traffic. Maintaining the long-term stability and safety of the road surface is a critical part of ensuring the smooth and orderly operation of highway transportation. However, with the increase in service time and traffic volume, double-layer continuous reinforced pavements also face challenges. The bearing capacity of double-layer continuous reinforced pavements is determined by the composite structure composed of road panels, steel bars and joints. The main forms of failure are joint expansion, steel bar damage, and plate shedding. The three together determine the service life of the plate. At present, there is no bearing capacity performance status monitoring and diagnosis technology for the overall composite structure of double-layer continuous reinforced pavements on the market. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the present application provides a vibration perception method and device for the health status of a double-layer continuously reinforced road slab, which can achieve efficient, accurate and rapid judgment of the health status of a double-layer continuously reinforced road slab based on a joint diagnosis of impact energy and mechanical vibration.

[0005] In a first aspect, the present application provides a double-layer continuously reinforced road slab health status vibration perception method, which is applied to a vibration perception performance status monitoring and diagnosis system, wherein the vibration perception performance status monitoring and diagnosis system includes an impact energy signal monitoring system and a mechanical vibration signal monitoring system; the method includes the following steps:

[0006] Based on the vibration sensing performance status monitoring and diagnosis system, continuous multi-board short-time rapid monitoring and diagnosis is performed, including the following steps:

[0007] Mark the monitoring sequence of continuous multiple panels, where the currently monitored double-layer continuous reinforced road panel is marked as the first panel, and the next monitored double-layer continuous reinforced road panel is marked as the second panel;

[0008] The first panel is monitored in real time based on the impact energy signal monitoring system and the mechanical vibration signal monitoring system respectively, and the performance status of the first panel is diagnosed by combining the monitoring results of the two; wherein, when the monitoring results of the two are inconsistent, the monitoring result obtained based on the impact energy signal monitoring system is determined as the performance status of the first panel; the performance status is a healthy status or a problem status;

[0009] If, for the first panel, the monitoring results obtained based on the impact energy signal monitoring system and the mechanical vibration signal monitoring system are consistent, the second panel is monitored based on the mechanical vibration signal monitoring system, and the performance status of the second panel is diagnosed using a relative difference comparison method; if, for the first panel, the monitoring results obtained based on the impact energy signal monitoring system and the mechanical vibration signal monitoring system are inconsistent, the performance status of the second panel is diagnosed according to the diagnostic method for the first panel;

[0010] Based on the vibration sensing performance status monitoring and diagnosis system, long-term stability monitoring and diagnosis of important plates are carried out, including the following steps:

[0011] Determine a target panel, and perform long-term monitoring on the target panel based on the mechanical vibration signal monitoring system, and diagnose the performance status of the target panel in combination with current monitoring results and historical monitoring results;

[0012] If the target panel is in a problem state, the target panel is monitored based on the impact energy signal monitoring system, and the performance state of the target panel is determined according to the obtained monitoring result.

[0013] In a possible implementation, the impact energy signal monitoring system includes an impact energy signal excitation device, an impact energy signal acquisition device, and an impact energy signal processing and analysis operation platform; wherein, monitoring a double-layer continuous reinforced road slab based on the impact energy signal monitoring system includes the following steps:

[0014] At a plurality of pre-selected first excitation device landing points, applying impact excitation to the double-layer continuous reinforced road slab based on the impact energy signal excitation device;

[0015] Collecting the impact energy signal based on the impact energy signal acquisition device, and transmitting it to the impact energy signal processing and analysis operation platform;

[0016] Based on the impact energy signal processing and analysis operation platform, the collected impact energy signals are processed and analyzed to obtain the average main frequency energy proportions at the landing points of multiple first excitation devices; wherein, if the average main frequency energy proportion is greater than a set threshold, the performance status of the double-layer continuous reinforced road panel is diagnosed as a healthy status.

[0017] In a possible implementation, the mechanical vibration signal monitoring system includes a vibration signal excitation device, a vibration signal sensing node, a vibration signal aggregation device, and a vibration signal processing and analysis operation platform; wherein, monitoring the first panel or the second panel based on the mechanical vibration signal monitoring system includes the following steps:

[0018] At a plurality of pre-selected second excitation device landing points, applying an impact excitation to the first panel or the second panel based on the vibration signal excitation device;

[0019] Collecting vibration signals based on the vibration signal sensing node, and transmitting the vibration signals to the vibration signal processing and analysis operation platform via the vibration signal aggregation device;

[0020] The vibration signal is processed and analyzed based on the vibration signal processing and analysis operation platform to obtain the average main frequency, average maximum acceleration and average vibration time at multiple landing points of the second excitation device; wherein, if the average main frequency, the average maximum acceleration and the average vibration time are all greater than the set threshold value, the performance status of the first panel or the second panel is diagnosed as a healthy state.

[0021] In a possible implementation, performing long-term stability monitoring and diagnosis on the target panel based on the mechanical vibration signal monitoring system includes the following steps:

[0022] At the pre-selected multiple second excitation device landing points, the vibration signal excited by the vehicle load is collected based on the vibration signal sensing node, and transmitted to the vibration signal processing and analysis operation platform via the vibration signal aggregation device;

[0023] The vibration signal is processed and analyzed based on the vibration signal processing and analysis operation platform to obtain the average main frequency of the current multiple landing points of the second excitation devices; wherein, if the average main frequency of the current multiple landing points of the second excitation devices is within the set range of the average main frequency within a set historical time period, the performance status of the target panel is judged to be a healthy status.

[0024] In a possible implementation manner, the pre-selected multiple first excitation device landing points include the middle of the double-layer continuous reinforced road panel and the four diagonally opposite corners of the panel. The pre-selected multiple second excitation device landing points include two diagonally opposite corners of the first panel or the second panel near the middle of the road and the center point of the connecting line.

[0025] In a possible implementation, the processing of the impact energy signal based on the impact energy signal processing and analysis operating platform includes framing, windowing, filtering and noise reduction, and endpoint detection, and the analysis includes time-frequency distribution and calculation of the main frequency energy ratio; the processing of the vibration signal based on the vibration signal processing and analysis operating platform includes time domain-frequency domain signal conversion, and the analysis includes extraction of three vibration characteristic parameters: vibration time, maximum acceleration and main frequency.

[0026] In a possible implementation manner, the performance status of the second panel is diagnosed by using a relative difference comparison method, including the following steps:

[0027] Based on the mechanical vibration signal monitoring system, respectively obtain the average main frequency of the first panel and the second panel;

[0028] If the difference between the average main frequency of the first panel and the average main frequency of the second panel is smaller than a set threshold, it is determined that the performance state of the second panel is consistent with the performance state of the first panel.

[0029] In a second aspect, the present application provides a double-layer continuously reinforced road slab health status vibration sensing device, which is applied to a vibration sensing performance status monitoring and diagnosis system, wherein the vibration sensing performance status monitoring and diagnosis system includes an impact energy signal monitoring system and a mechanical vibration signal monitoring system; the device includes:

[0030] A first monitoring module is used to perform continuous short-term rapid monitoring and diagnosis of multiple panels based on the vibration sensing performance status monitoring and diagnosis system, including: marking the order of continuous multi-panel monitoring, wherein the currently monitored double-layer continuous reinforced road panel is marked as the first panel, and the next monitored double-layer continuous reinforced road panel is marked as the second panel; the first panel is monitored in real time based on the impact energy signal monitoring system and the mechanical vibration signal monitoring system, respectively, and the performance status of the first panel is diagnosed in combination with the monitoring results of the two; wherein, when the monitoring results of the two are inconsistent, the monitoring result obtained based on the impact energy signal monitoring system is determined as the performance status of the first panel; the performance status is a healthy state or a problem state; if the monitoring results obtained based on the impact energy signal monitoring system and the mechanical vibration signal monitoring system are consistent for the first panel, the second panel is monitored based on the mechanical vibration signal monitoring system, and the performance status of the second panel is diagnosed by using a relative difference comparison method; if the monitoring results obtained based on the impact energy signal monitoring system and the mechanical vibration signal monitoring system are inconsistent for the first panel, the performance status of the second panel is diagnosed according to the diagnosis method for the first panel;

[0031] The second monitoring module is used to perform long-term stability monitoring and diagnosis of important panels based on the vibration perception performance status monitoring and diagnosis system, including: determining a target panel, and performing long-term monitoring of the target panel based on the mechanical vibration signal monitoring system, and diagnosing the performance status of the target panel in combination with current monitoring results and historical monitoring results; if the target panel is in a problem state, monitoring the target panel based on the impact energy signal monitoring system, and determining the performance status of the target panel based on the obtained monitoring results.

[0032] In a third aspect, the present application provides an electronic device comprising: a processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the processor and the memory communicate through the bus, and when the machine-readable instructions are executed by the processor, the steps of the vibration perception method for the healthy status of a double-layer continuously reinforced road panel as described in any one of the first aspects are performed.

[0033] In a fourth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, executes the steps of the method for vibration perception of the health status of a double-layer continuously reinforced road panel as described in any one of the first aspects.

[0034] The present embodiment provides a method and device for vibration sensing of the health status of a double-layer continuously reinforced road slab, which integrates the two ideas of impact energy and mechanical vibration to jointly diagnose the health status of the double-layer continuously reinforced road slab, thereby achieving efficient, accurate and rapid determination of the bearing capacity of continuous multiple plates of a double-layer continuously reinforced pavement, and breaking through the limitations of time and location to achieve long-term and stable monitoring of the health status of important plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 A flow chart of a method for vibrating the health status of a double-layer continuously reinforced road slab according to an embodiment of the present application is shown;

[0037] Figure 2 A schematic diagram of the structure of a vibration sensing performance status monitoring and diagnosis system according to an embodiment of the present application is shown;

[0038] Figure 3 A schematic diagram of the structure of an impact energy signal monitoring system according to an embodiment of the present application is shown;

[0039] Figure 4 A schematic diagram of the structure of a mechanical vibration signal monitoring system according to an embodiment of the present application is shown;

[0040] Figure 5 A structural block diagram of a healthy state vibration sensing device for a double-layer continuously reinforced road slab according to an embodiment of the present application is shown;

[0041] Figure 6 A structural block diagram of an electronic device described in an embodiment of the present application is shown.

[0042] Description of main component symbols:

[0043] N1, impact energy signal excitation device, N2, impact energy signal acquisition equipment, N3, impact energy signal processing and analysis operation platform, M1, vibration signal excitation device, M2-vibration signal sensing node, M3, vibration signal aggregation equipment, M4, vibration signal processing and analysis operation platform. DETAILED DESCRIPTION

[0044] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be understood that the drawings in the present application only serve the purpose of explanation and description and are not used to limit the scope of protection of the present application. In addition, it should be understood that the schematic drawings are not drawn in real proportion. The flowchart used in this application shows the operations implemented according to some embodiments of the present application. It should be understood that the operations of the flowchart can be implemented out of sequence, and the steps without logical context can be reversed in order or implemented simultaneously. In addition, those skilled in the art can add one or more other operations to the flowchart under the guidance of the content of the present application, or remove one or more operations from the flowchart.

[0045] In addition, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0046] It should be noted that the term "comprising" will be used in the embodiments of the present application to indicate the existence of the features declared thereafter, but does not exclude the addition of other features.

[0047] Based on the technical problems raised by the background technology, the present application provides a vibration perception method and device for the health status of a double-layer continuously reinforced road slab, which can achieve efficient, accurate and rapid judgment of the health status of a double-layer continuously reinforced road slab based on the joint diagnosis of impact energy and mechanical vibration.

[0048] See the instruction manual Figure 1 The present application provides a double-layer continuous reinforced road slab health status vibration perception method, which is applied to a vibration perception performance status monitoring and diagnosis system. The vibration perception performance status monitoring and diagnosis system includes an impact energy signal monitoring system and a mechanical vibration signal monitoring system. The method includes the following steps:

[0049] Based on the vibration sensing performance status monitoring and diagnosis system, continuous multi-board short-time rapid monitoring and diagnosis is performed, including the following steps:

[0050] S1. Marking the monitoring sequence of continuous multiple panels, wherein the currently monitored double-layer continuous reinforced road panel is marked as the first panel, and the next monitored double-layer continuous reinforced road panel is marked as the second panel;

[0051] S2, performing real-time monitoring on the first panel based on the impact energy signal monitoring system and the mechanical vibration signal monitoring system respectively, and diagnosing the performance status of the first panel in combination with the monitoring results of the two; wherein, when the monitoring results of the two are inconsistent, the monitoring result obtained based on the impact energy signal monitoring system is determined as the performance status of the first panel; the performance status is a healthy status or a problem status;

[0052] S3. If the monitoring results obtained by the impact energy signal monitoring system and the mechanical vibration signal monitoring system are consistent with respect to the first panel, the second panel is monitored based on the mechanical vibration signal monitoring system, and the performance status of the second panel is diagnosed by using a relative difference comparison method; if the monitoring results obtained by the impact energy signal monitoring system and the mechanical vibration signal monitoring system are inconsistent with respect to the first panel, the performance status of the second panel is diagnosed according to the diagnostic method for the first panel;

[0053] Based on the vibration sensing performance status monitoring and diagnosis system, long-term stability monitoring and diagnosis of important plates are carried out, including the following steps:

[0054] L1. Determine a target panel, and perform long-term monitoring of the target panel based on the mechanical vibration signal monitoring system, and diagnose the performance status of the target panel in combination with current monitoring results and historical monitoring results;

[0055] L2. If the target panel is in a problem state, the target panel is monitored based on the impact energy signal monitoring system, and the performance state of the target panel is determined according to the obtained monitoring results.

[0056] In this application, the vibration sensing method for the health status of double-layer continuous reinforced road panels is based on a vibration sensing performance status monitoring and diagnosis system to achieve short-term rapid monitoring and diagnosis of continuous multi-plates of double-layer continuous reinforced road panels and long-term stable monitoring and diagnosis of important plates. Figure 2 The vibration sensing performance status monitoring and diagnosis system shown in the figure includes an impact energy signal monitoring system (composed of dark-colored components in the figure), a mechanical vibration signal monitoring system (composed of light-colored components in the figure) and a laptop computer; among which, the laptop computer is a shared data processing and analysis operation platform.

[0057] For details, see the attached manual. Figure 3The impact energy signal monitoring system includes an impact energy signal excitation device N1, an impact energy signal acquisition device N2 and an impact energy signal processing and analysis operation platform N3; the impact signal excitation device N1 includes a 5kg solid iron ball and its traction rope, which are used to apply an artificial impact vibration source to the road surface; the impact energy signal acquisition device N2 includes a portable stereo recorder composed of an audio sensor, a signal processing, acquisition module, a signal storage module, a control module and a power module, which can stably and faithfully receive the impact energy signal and convert it into an electrical signal for storage; the impact energy signal processing and analysis operation platform N3 includes a computer and an impact energy signal supporting analysis software, through which the signal processing, analysis and results visualization are completed, so as to perform performance status monitoring and diagnosis;

[0058] See the instruction manual Figure 4 The mechanical vibration signal monitoring system includes a vibration signal excitation device M1, a vibration signal sensing node M2, a vibration signal aggregation device M3 and a vibration signal processing and analysis operating platform M4; the vibration signal excitation device M1 is the same as the impact energy signal excitation device N1; the vibration signal sensing node M2 ​​mainly includes a wireless unidirectional acceleration sensor, which can sense the acceleration signal at the location and convert it into a digital signal for storage and wireless transmission; the vibration signal aggregation device M3 mainly includes a dynamic wireless vibration signal test analyzer, which can receive and store the acceleration signal of the sensing node and transmit the signal to the vibration signal processing and analysis operating platform M4; the vibration signal processing and analysis operating platform M4 includes a computer and vibration signal supporting analysis software, and the supporting analysis software is used to complete signal processing, analysis and visual display of the results, so as to perform performance status monitoring and diagnosis.

[0059] Specifically, when performing continuous multi-panel short-term rapid monitoring and diagnosis, in step S1, the continuous multi-panel monitoring sequence is marked according to the driving direction, and the currently monitored double-layer continuous reinforced road panel is marked as the first panel, and the next monitored double-layer continuous reinforced road panel is marked as the second panel;

[0060] In step S2 and step S3, when the first panel / second panel is monitored in real time based on the mechanical vibration signal monitoring system, the landing point of the excitation device is first selected. In the embodiment of the present application, the first panel and the second panel are respectively located at two diagonally opposite corners of the road. The three points including the center point of the connecting line are the landing points of the excitation device. The excitation sequence is as shown in the attached manual. Figure 4The vibration signal excitation device is used to excite the mechanical vibration signal of the road surface by using a traction rope to raise the iron ball to a height of 1m above the landing point, and then releasing the iron ball. The iron ball performs free fall motion to exert impact excitation on the road surface; the vibration signal sensing nodes (wireless unidirectional acceleration sensors) are arranged on both sides of the crack between the first panel and the second panel, at a distance diagonally opposite to the panel corner. At the board surface, wherein, a magnetic base is first pasted at a selected point, and then the bottom of the wireless unidirectional acceleration sensor is magnetically attracted to the magnetic base; then the impact energy signal is collected based on the impact energy signal collection device, and transmitted to the impact energy signal processing and analysis operation platform; based on the impact energy signal processing and analysis operation platform, the collected impact energy signal is processed and analyzed, wherein the processing flow includes frame segmentation, windowing, filtering and noise reduction, and endpoint detection processing, and the analysis flow includes time-frequency distribution calculation and main frequency energy ratio calculation. If the calculated average main frequency energy ratio is greater than the set threshold value, the performance status of the double-layer continuous reinforced road panel is diagnosed as a healthy state, otherwise it is a problem state.

[0061] When the impact energy signal monitoring system is used to monitor the first panel / second panel in real time, the first and second panels should also be placed at the same time. In the embodiment of the present application, the first panel / second panel should be placed at the diagonal angles of the four corners. A total of five points on the plate are the landing points of the excitation device. The excitation sequence is as follows: Figure 3 Marked in the figure; the method of using the impact energy signal excitation device to excite the mechanical vibration signal of the pavement is to use a traction rope to raise the iron ball to a height of 1m above the landing point, release the iron ball, and the iron ball performs free fall motion to exert impact excitation on the pavement; then the vibration signal is collected based on the vibration signal sensing node, and transmitted to the vibration signal processing and analysis operation platform via the vibration signal convergence device; the vibration signal is processed and analyzed based on the vibration signal processing and analysis operation platform, wherein the processing process includes time domain-frequency domain signal conversion, and the analysis process includes extraction of three vibration characteristic parameters: vibration time, maximum acceleration and main frequency. If the proposed average main frequency, the average maximum acceleration and the average vibration time are all greater than the set threshold value, the performance status of the double-layer continuous reinforced road panel is diagnosed as a healthy state, otherwise it is a problem state.

[0062] In one embodiment, the framing step satisfies the following formula:

[0063]

[0064] In the formula, f n is the signal function, overlap is the frame shift, N is the Nth frame, wlen is the frame length, and inc is the displacement between two frames.

[0065] The windowing step selects a Hamming window function with good low-pass characteristics, satisfying the following formula:

[0066]

[0067] Among them, n=1, 2,..., N-1, N, N represents the total length of the window function, and L represents the effective length of the window function.

[0068] The denoising step selects a FIR filter as a means of denoising, satisfying the following formula:

[0069]

[0070] Among them, H d (e jw ) is the processed signal, h d (n) is the pulse signal, ω is the signal frequency, ω c is the set filtering frequency.

[0071] The endpoint detection operation adopts the short-time average zero-crossing rate method, which satisfies the following formula:

[0072]

[0073] Among them, y i (n) is the windowed impulse signal, sgn(x) is a special function symbol, and the expression is as follows:

[0074]

[0075] The time-frequency analysis method adopts the Page time-frequency distribution method, which satisfies the following formula:

[0076]

[0077] φ(θ,T)=exp(jθ / 2)

[0078] Among them, φ(θ,τ) is the kernel function, x(t) is the non-stationary analytical signal, x*(t) is its complex conjugate function, and ω is the signal frequency.

[0079] The calculation method of the main frequency energy ratio is shown in the following formula:

[0080]

[0081] Among them, φ is the ratio of the main frequency energy to the total energy, W 0 is the main frequency energy, W is the total energy, U(t,f) function is the composite function of the non-stationary analysis signal x(t), f 0 is the main frequency of the signal, t 0 The time corresponding to the main frequency.

[0082] The method used for the time domain-frequency domain signal conversion is FFT Fourier transform, and the Fourier integral satisfies the following formula:

[0083]

[0084]

[0085] Among them, f(ω) is the spectrum function, X(ω) is the spectrum density function, f(t) is the time domain signal function, and ω is the signal frequency; and the vibration time is extracted based on the time domain signal graph, and the maximum acceleration and main frequency are extracted based on the frequency domain signal.

[0086] In an embodiment of the present application, when performing continuous short-term rapid monitoring and diagnosis of multiple panels, in the process of judging the performance status of the first panel or the second panel based on the mechanical vibration signal monitoring system, if the average main frequency of the landing points of the three excitation devices of a single panel is greater than 120Hz and the average maximum acceleration is less than 1m / s2 and the average vibration time is less than 40ms, the double-layer continuous reinforced road panel is determined to be in a healthy state; in other cases, it is determined to be in a problem state, that is, there is a health problem; and in the process of judging the performance status of the first panel or the second panel by the impact energy signal monitoring system, if the average main frequency energy ratio φ of the landing points of the five excitation devices is greater than 16, it is determined to be in a healthy state; in other cases, it is determined to be in a problem state, that is, there is a health problem.

[0087] Among them, in step S3, based on the judgment result of step S2 on the first panel, when the relative difference comparison method is used to diagnose the performance status of the second panel, specifically, if the absolute value of the difference between the average main frequencies of the three excitation device landing points of the first panel and the second panel / the average main frequencies of the three excitation device landing points of the first panel is less than 10%, then it is determined that the performance status of the second panel is consistent with the performance status of the first panel.

[0088] Specifically, when conducting long-term stability monitoring and diagnosis of important panels, in step L1, during the long-term monitoring of the target panel based on the mechanical vibration signal monitoring system, the difference from the real-time monitoring of the first panel or the second panel based on the mechanical vibration signal monitoring system in step S2 is that it is not the vibration signal excitation device that applies impact excitation to the target panel, but the vibration signal excited by the real-time vehicle load. The processing and analysis process of the collected vibration signal is the same, which will not be repeated here. Among them, after obtaining the current monitoring result of the target panel (the monitoring result here specifically refers to the average main frequency of the landing points of the three excitation devices of the target panel), it is also necessary to obtain the historical monitoring result of the target panel (the monitoring result here specifically refers to the average main frequency of the landing points of the three excitation devices of the target panel 24 hours before the current moment). If the average main frequency at the diagnosis moment is within the range of ±35% of the average main frequency 24 hours before the moment, the target panel is deemed to be in a healthy state; in step L2, the target panel that does not meet the health state is further monitored based on the impact energy signal monitoring system. The monitoring process refers to the process of real-time monitoring of the first panel or the second panel based on the mechanical vibration signal monitoring system in step S2, which will not be repeated here, that is, the result verification is performed to obtain the final monitoring result.

[0089] It can be seen that the vibration perception method for the healthy status of the double-layer continuously reinforced road panel proposed in this application is based on a vibration perception performance status monitoring and diagnosis system composed of an impact energy signal monitoring system and a mechanical vibration signal monitoring system, and constructs two application paths: short-term rapid monitoring and diagnosis of continuous multiple panels and long-term stable monitoring and diagnosis of important panels. While reducing manpower and time costs, it achieves efficient, accurate and rapid judgment of the bearing capacity of the overall composite structure of continuous multiple panels; and breaks through the limitations of time and place to achieve long-term and stable monitoring and diagnosis of the health status of important panels.

[0090] Based on the same inventive concept, the embodiment of the present application also provides a double-layer continuously reinforced road slab health status vibration sensing device, which is applied to a vibration sensing performance status monitoring and diagnosis system. The vibration sensing performance status monitoring and diagnosis system includes an impact energy signal monitoring system and a mechanical vibration signal monitoring system; the device includes:

[0091] The first monitoring module 501 is used to perform continuous short-term rapid monitoring and diagnosis of multiple panels based on the vibration sensing performance status monitoring and diagnosis system, including: marking the order of continuous multi-panel monitoring, wherein the currently monitored double-layer continuous reinforced road panel is marked as the first panel, and the next monitored double-layer continuous reinforced road panel is marked as the second panel; real-time monitoring of the first panel is performed based on the impact energy signal monitoring system and the mechanical vibration signal monitoring system, and the performance status of the first panel is diagnosed in combination with the monitoring results of the two; wherein, when the monitoring results of the two are inconsistent, the monitoring result obtained based on the impact energy signal monitoring system is determined as the performance status of the first panel; the performance status is a healthy state or a problem state; if the monitoring results obtained based on the impact energy signal monitoring system and the mechanical vibration signal monitoring system are consistent for the first panel, the second panel is monitored based on the mechanical vibration signal monitoring system, and the performance status of the second panel is diagnosed by using a relative difference comparison method; if the monitoring results obtained based on the impact energy signal monitoring system and the mechanical vibration signal monitoring system are inconsistent for the first panel, the performance status of the second panel is diagnosed according to the diagnosis method for the first panel;

[0092] The second monitoring module 502 is used to perform long-term stability monitoring and diagnosis of important panels based on the vibration sensing performance status monitoring and diagnosis system, including: determining a target panel, and performing long-term monitoring of the target panel based on the mechanical vibration signal monitoring system, and diagnosing the performance status of the target panel in combination with current monitoring results and historical monitoring results; if the target panel is in a problem state, monitoring the target panel based on the impact energy signal monitoring system, and determining the performance status of the target panel based on the obtained monitoring results.

[0093] In some embodiments, the impact energy signal monitoring system includes an impact energy signal excitation device, an impact energy signal collection device and an impact energy signal processing and analysis operation platform; wherein, the first monitoring module 501 or the second monitoring module 502 monitors the double-layer continuous reinforced road panel based on the impact energy signal monitoring system, including: applying impact excitation to the double-layer continuous reinforced road panel based on the impact energy signal excitation device at multiple pre-selected first excitation device landing points; collecting impact energy signals based on the impact energy signal collection device and transmitting them to the impact energy signal processing and analysis operation platform; processing and analyzing the collected impact energy signals based on the impact energy signal processing and analysis operation platform to obtain the average main frequency energy proportion at multiple first excitation device landing points; wherein, if the average main frequency energy proportion is greater than a set threshold value, the performance status of the double-layer continuous reinforced road panel is diagnosed as a healthy state.

[0094] In some embodiments, the mechanical vibration signal monitoring system includes a vibration signal excitation device, a vibration signal sensing node, a vibration signal aggregation device and a vibration signal processing and analysis operation platform; wherein, the first monitoring module 501 monitors the first panel or the second panel based on the mechanical vibration signal monitoring system, including: applying impact excitation to the first panel or the second panel based on the vibration signal excitation device at a plurality of pre-selected second excitation device landing points; collecting vibration signals based on the vibration signal sensing node, and transmitting them to the vibration signal processing and analysis operation platform via the vibration signal aggregation device; processing and analyzing the vibration signals based on the vibration signal processing and analysis operation platform to obtain the average main frequency, average maximum acceleration, and average vibration time at the plurality of second excitation device landing points; wherein, if the average main frequency, the average maximum acceleration, and the average vibration time are all greater than a set threshold value, the performance status of the first panel or the second panel is diagnosed as a healthy state.

[0095] In some embodiments, the first monitoring module 501 monitors the target panel based on the mechanical vibration signal monitoring system, including: at a plurality of pre-selected second excitation device landing points, collecting vibration signals excited by vehicle loads based on the vibration signal sensing node, and transmitting the vibration signals to the vibration signal processing and analysis operation platform via the vibration signal aggregation device; processing and analyzing the vibration signals based on the vibration signal processing and analysis operation platform to obtain the average main frequency at the current plurality of second excitation device landing points; wherein, if the average main frequency at the current plurality of second excitation device landing points is within a set range of the average main frequency within a set historical time period, the performance status of the target panel is judged to be a healthy status.

[0096] In some embodiments, the pre-selected plurality of first excitation device drop points include the middle of the double-layer continuous reinforced road panel and four diagonally opposite corners of the panel. The pre-selected multiple second excitation device landing points include two diagonally opposite corners of the first panel or the second panel near the middle of the road and the center point of the connecting line.

[0097] In some embodiments, the processing of the vibration signal based on the vibration signal processing and analysis operating platform includes framing, windowing, filtering and noise reduction, and endpoint detection, and the analysis includes time-frequency distribution and calculation of the main frequency energy ratio; the processing of the vibration signal based on the vibration signal processing and analysis operating platform includes time domain-frequency domain signal conversion, and the analysis includes extraction of three vibration characteristic parameters: vibration time, maximum acceleration and main frequency.

[0098] In some embodiments, the first monitoring module 501 uses a relative difference comparison method to diagnose the performance status of the second panel, including: obtaining the average main frequency of the first panel and the second panel respectively based on the mechanical vibration signal monitoring system; if the difference between the average main frequency of the first panel and the average main frequency of the second panel is less than a set threshold, it is determined that the performance status of the second panel is consistent with the performance status of the first panel.

[0099] The present application provides a double-layer continuously reinforced road slab health status vibration sensing device, which integrates the two ideas of impact energy and mechanical vibration to jointly diagnose the health status of the double-layer continuously reinforced road slab, and realizes efficient, accurate and rapid judgment of the bearing capacity of continuous multiple plates of the double-layer continuously reinforced pavement, and breaks through the limitations of time and location to achieve long-term and stable monitoring of the health status of important plates.

[0100] Based on the same concept of the present invention, the specification is attached Figure 6 As shown, the structure of an electronic device 600 provided in an embodiment of the present application includes: at least one processor 601, at least one network interface 604 or other user interface 603, a memory 605, and at least one communication bus 602. The communication bus 602 is used to realize the connection and communication between these components. The electronic device 600 optionally includes a user interface 603, including a display (for example, a touch screen, LCD, CRT, holographic imaging (Holographic) or projection (Projector), etc.), a keyboard or a pointing device (for example, a mouse, a trackball (trackball), a touch pad or a touch screen, etc.).

[0101] The memory 605 may include a read-only memory and a random access memory, and provides instructions and data to the processor 601. A portion of the memory 605 may also include a non-volatile random access memory (NVRAM).

[0102] In some implementations, the memory 605 stores the following elements, executable modules or data structures, or a subset thereof, or an extended set thereof:

[0103] Operating system 6051, including various system programs for implementing various basic services and processing hardware-based tasks;

[0104] The application module 6052 includes various application programs, such as a launcher, a media player, a browser, etc., which are used to implement various application services.

[0105] In an embodiment of the present application, by calling the program or instructions stored in the memory 605, the processor 601 is used to execute steps in a vibration perception method for the health status of a double-layer continuously reinforced road panel, which can achieve efficient, accurate and rapid judgment of the health status of the double-layer continuously reinforced road panel based on the joint diagnosis of impact energy and mechanical vibration.

[0106] The present application also provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps in the vibration perception method for the healthy state of a double-layer continuously reinforced road slab are executed.

[0107] Specifically, the storage medium can be a general storage medium, such as a mobile disk, a hard disk, etc. When the computer program on the storage medium is run, the above-mentioned double-layer continuously reinforced road panel health status vibration perception method can be executed.

[0108] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation. 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 mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0109] 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.

[0110] In addition, each functional unit in the embodiments provided in the present application 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.

[0111] If the function 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 application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes 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 various embodiments of the present application. The aforementioned 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.

[0112] Finally, it should be noted that the above embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application is described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the aforementioned embodiments within the technical scope disclosed in the present application, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application. They should all be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A method for vibrating the health status of a double-layer continuously reinforced road slab, characterized in that: Applied to a vibration sensing performance status monitoring and diagnosis system, the vibration sensing performance status monitoring and diagnosis system includes an impact energy signal monitoring system and a mechanical vibration signal monitoring system; the method includes the following steps: Based on the vibration sensing performance status monitoring and diagnosis system, continuous multi-board short-time rapid monitoring and diagnosis is performed, including the following steps: Mark the monitoring sequence of continuous multiple panels, where the currently monitored double-layer continuous reinforced road panel is marked as the first panel, and the next monitored double-layer continuous reinforced road panel is marked as the second panel; The first panel is monitored in real time based on the impact energy signal monitoring system and the mechanical vibration signal monitoring system respectively, and the performance status of the first panel is diagnosed by combining the monitoring results of the two; wherein, when the monitoring results of the two are inconsistent, the monitoring result obtained based on the impact energy signal monitoring system is determined as the performance status of the first panel; the performance status is a healthy status or a problem status; If, for the first panel, the monitoring results obtained based on the impact energy signal monitoring system and the mechanical vibration signal monitoring system are consistent, the second panel is monitored based on the mechanical vibration signal monitoring system, and the performance status of the second panel is diagnosed using a relative difference comparison method; if, for the first panel, the monitoring results obtained based on the impact energy signal monitoring system and the mechanical vibration signal monitoring system are inconsistent, the performance status of the second panel is diagnosed according to the diagnostic method for the first panel; Based on the vibration sensing performance status monitoring and diagnosis system, long-term stability monitoring and diagnosis of important plates are carried out, including the following steps: Determine a target panel, and perform long-term monitoring on the target panel based on the mechanical vibration signal monitoring system, and diagnose the performance status of the target panel in combination with current monitoring results and historical monitoring results; If the target panel is in a problem state, the target panel is monitored based on the impact energy signal monitoring system, and the performance state of the target panel is determined according to the obtained monitoring result.

2. According to claim 1, a method for vibrating the health status of a double-layer continuously reinforced road slab is characterized in that: The impact energy signal monitoring system includes an impact energy signal excitation device, an impact energy signal acquisition device, and an impact energy signal processing and analysis operation platform; wherein, monitoring the double-layer continuous reinforced road slab based on the impact energy signal monitoring system includes the following steps: At a plurality of pre-selected first excitation device landing points, applying impact excitation to the double-layer continuous reinforced road slab based on the impact energy signal excitation device; Collecting the impact energy signal based on the impact energy signal acquisition device, and transmitting it to the impact energy signal processing and analysis operation platform; Based on the impact energy signal processing and analysis operation platform, the collected impact energy signals are processed and analyzed to obtain the average main frequency energy proportions at the landing points of multiple first excitation devices; wherein, if the average main frequency energy proportion is greater than a set threshold, the performance status of the double-layer continuous reinforced road panel is diagnosed as a healthy status.

3. According to claim 2, a double-layer continuous reinforced road slab health status vibration perception method is characterized in that: The mechanical vibration signal monitoring system includes a vibration signal excitation device, a vibration signal sensing node, a vibration signal aggregation device and a vibration signal processing and analysis operation platform; wherein, monitoring the first panel or the second panel based on the mechanical vibration signal monitoring system includes the following steps: At a plurality of pre-selected second excitation device landing points, applying an impact excitation to the first panel or the second panel based on the vibration signal excitation device; Collecting vibration signals based on the vibration signal sensing node, and transmitting the vibration signals to the vibration signal processing and analysis operation platform via the vibration signal aggregation device; The vibration signal is processed and analyzed based on the vibration signal processing and analysis operation platform to obtain the average main frequency, average maximum acceleration and average vibration time at multiple landing points of the second excitation device; wherein, if the average main frequency, the average maximum acceleration and the average vibration time are all greater than the set threshold value, the performance status of the first panel or the second panel is diagnosed as a healthy state.

4. According to claim 3, a method for vibrating the health status of a double-layer continuously reinforced road slab is characterized in that: in, Based on the mechanical vibration signal monitoring system, long-term stability monitoring and diagnosis of the target panel is performed, including the following steps: At the pre-selected multiple second excitation device landing points, the vibration signal excited by the vehicle load is collected based on the vibration signal sensing node, and transmitted to the vibration signal processing and analysis operation platform via the vibration signal aggregation device; The vibration signal is processed and analyzed based on the vibration signal processing and analysis operation platform to obtain the average main frequency of the current multiple landing points of the second excitation devices; wherein, if the average main frequency of the current multiple landing points of the second excitation devices is within the set range of the average main frequency within a set historical time period, the performance status of the target panel is judged to be a healthy status.

5. According to claim 4, a method for vibrating the health status of a double-layer continuously reinforced road slab is characterized in that: The pre-selected multiple landing points of the first excitation device include five positions in the middle of the double-layer continuously reinforced road panel and at 20√5cm diagonally opposite corners of the four panels; the pre-selected multiple landing points of the second excitation device include three positions at 20√5cm diagonally opposite corners of the first panel or the second panel on the side close to the middle of the road and at the center point of the connecting line.

6. According to claim 5, a method for vibrating the health status of a double-layer continuously reinforced road slab is characterized in that: in, The processing of the impact energy signal based on the impact energy signal processing and analysis operation platform includes framing, windowing, filtering and noise reduction, and endpoint detection, and the analysis includes time-frequency distribution and calculation of the main frequency energy ratio; the processing of the vibration signal based on the vibration signal processing and analysis operation platform includes time domain-frequency domain signal conversion, and the analysis includes extraction of three vibration characteristic parameters: vibration time, maximum acceleration and main frequency.

7. A method for vibrating the health status of a double-layer continuously reinforced road slab according to claim 6, characterized in that: The performance status of the second panel is diagnosed by using a relative difference comparison method, comprising the following steps: Based on the mechanical vibration signal monitoring system, respectively obtain the average main frequency of the first panel and the second panel; If the difference between the average main frequency of the first panel and the average main frequency of the second panel is smaller than a set threshold, it is determined that the performance state of the second panel is consistent with the performance state of the first panel.

8. A double-layer continuously reinforced road slab health status vibration sensing device, characterized in that: Applied to a vibration sensing performance status monitoring and diagnosis system, the vibration sensing performance status monitoring and diagnosis system includes an impact energy signal monitoring system and a mechanical vibration signal monitoring system; the device includes: A first monitoring module is used to perform continuous short-term rapid monitoring and diagnosis of multiple panels based on the vibration sensing performance status monitoring and diagnosis system, including: marking the order of continuous multi-panel monitoring, wherein the currently monitored double-layer continuous reinforced road panel is marked as the first panel, and the next monitored double-layer continuous reinforced road panel is marked as the second panel; the first panel is monitored in real time based on the impact energy signal monitoring system and the mechanical vibration signal monitoring system, respectively, and the performance status of the first panel is diagnosed in combination with the monitoring results of the two; wherein, when the monitoring results of the two are inconsistent, the monitoring result obtained based on the impact energy signal monitoring system is determined as the performance status of the first panel; the performance status is a healthy state or a problem state; if the monitoring results obtained based on the impact energy signal monitoring system and the mechanical vibration signal monitoring system are consistent for the first panel, the second panel is monitored based on the mechanical vibration signal monitoring system, and the performance status of the second panel is diagnosed by using a relative difference comparison method; if the monitoring results obtained based on the impact energy signal monitoring system and the mechanical vibration signal monitoring system are inconsistent for the first panel, the performance status of the second panel is diagnosed according to the diagnosis method for the first panel; The second monitoring module is used to perform long-term stability monitoring and diagnosis of important panels based on the vibration perception performance status monitoring and diagnosis system, including: determining a target panel, and performing long-term monitoring of the target panel based on the mechanical vibration signal monitoring system, and diagnosing the performance status of the target panel in combination with current monitoring results and historical monitoring results; if the target panel is in a problem state, monitoring the target panel based on the impact energy signal monitoring system, and determining the performance status of the target panel based on the obtained monitoring results.

9. An electronic device, characterized in that: include: A processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the processor and the memory communicate via the bus, and when the machine-readable instructions are executed by the processor, the steps of the vibration perception method for the healthy state of a double-layer continuously reinforced road panel as described in any one of claims 1 to 7 are performed.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, which, when executed by a processor, executes the steps of the method for vibration sensing of the healthy state of a double-layer continuously reinforced road slab as claimed in any one of claims 1 to 7.

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