A method and device for sensing the health state of a double-layer continuous reinforced pavement panel through vibration

Abstract

The application relates to the technical field of pavement health monitoring, in particular to a double-layer continuous reinforced pavement slab health state vibration sensing method and device, which is based on a vibration sensing performance state monitoring and diagnosing system composed of an impact energy signal monitoring system and a mechanical vibration signal monitoring system, two application paths of continuous multi-slab short-time rapid monitoring and diagnosing and important slab long-term stable monitoring and diagnosing are constructed, the human and time costs are reduced, the efficient, accurate and rapid discrimination of the bearing capacity of the continuous multi-slab integral composite structure is realized, the time and place restrictions are broken, and the long-term stable monitoring and diagnosing of the health state of the important slab is realized.

Description

TECHNICAL FIELD

[0001] The present application 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. BACKGROUND

[0002] The double-layer continuous reinforcement pavement is a new rigid pavement structure form, specifically, two layers of continuous transverse and longitudinal steel bars are arranged in the concrete slab, wherein the upper layer of longitudinal steel bars has a certain restraining effect on the transverse cracks of the concrete slab caused by temperature shrinkage, dry shrinkage and load, and the lower layer of longitudinal steel bars can better resist the bending tensile stress at the bottom of the slab. The double-layer continuous reinforcement pavement is a composite structure composed of the pavement slab body, double-layer reinforcement and active crack control, the double-layer continuous reinforcement improves the overall strength of the surface slab, forms a continuous and flat driving surface, and is particularly suitable for roads bearing heavy traffic and frequent traffic volume, such as highways, industrial areas and airport runways.

[0003] The double-layer continuous reinforcement is mainly used for roads bearing heavy traffic and frequent traffic volume, and maintaining the long-term stability and safety of the pavement is a key link to ensure the safe and orderly highway transportation. However, with the increase of use time and traffic volume, the double-layer continuous reinforcement pavement also faces challenges. The bearing capacity of the double-layer continuous reinforcement pavement is determined by the composite structure composed of the pavement slab, steel bars and joints, and the failure modes mainly include joint expansion, steel bar damage and slab separation, which jointly determine the service life of the slab. However, there is no bearing capacity performance state monitoring and diagnosis technology for the overall composite structure of the double-layer continuous reinforcement pavement on the market. SUMMARY

[0004] In order to overcome the deficiencies in the prior art, the present application provides a double-layer continuous reinforcement pavement slab health state vibration sensing method and device, which can realize efficient, accurate and rapid discrimination of the health state of the double-layer continuous reinforcement pavement slab based on combined diagnosis of impact energy and mechanical vibration.

[0005] In a first aspect, the present application provides a double-layer continuous reinforcement pavement slab health state vibration sensing method applied to a vibration sensing performance state monitoring and diagnosis system, wherein the vibration sensing performance state monitoring and diagnosis system comprises an impact energy signal monitoring system and a mechanical vibration signal monitoring system; the method comprises the following steps:

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

[0007] The monitoring sequence of the continuous multiple panels is marked, wherein the currently monitored double-layer continuous reinforced pavement panel is marked as a first panel, and the next monitored double-layer continuous reinforced pavement panel is marked as a 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 state of the first panel is diagnosed by combining the monitoring results of the two systems; when the monitoring results of the two systems are inconsistent, the monitoring result obtained based on the impact energy signal monitoring system is determined as the performance state of the first panel; the performance state is a healthy state or a problem state;

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

[0010] The vibration-aware performance state monitoring and diagnosis system is used for long-term stable monitoring and diagnosis of important panels, including the following steps:

[0011] A target panel is determined, and the target panel is monitored in a long term based on the mechanical vibration signal monitoring system, and the performance state of the target panel is diagnosed by combining the current monitoring result and the historical monitoring result;

[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 the monitoring of the double-layer continuous reinforced pavement panel based on the impact energy signal monitoring system includes the following steps:

[0014] The impact energy signal excitation device is used to apply impact excitation to the double-layer continuous reinforced pavement panel at a plurality of preselected first excitation device drop points;

[0015] The impact energy signal acquisition device is used to collect impact energy signals and transmit them to the impact energy signal processing and analysis operation platform;

[0016] The impact energy signal processing and analysis operation platform processes and analyzes the collected impact energy signals to obtain average main frequency energy proportion at each of the first excitation device drop points; if the average main frequency energy proportion is greater than a set threshold, the performance state of the double-layer continuously reinforced pavement slab is diagnosed as a healthy state.

[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 the mechanical vibration signal monitoring system monitors the first panel or the second panel, including the following steps:

[0018] The vibration signal excitation device applies impact excitation to the first panel or the second panel at a plurality of pre-selected second excitation device drop points;

[0019] The vibration signal sensing node collects vibration signals, which are transmitted to the vibration signal processing and analysis operation platform through the vibration signal aggregation device;

[0020] The vibration signal processing and analysis operation platform processes and analyzes the vibration signals to obtain average main frequency, average maximum acceleration, and average vibration time at each of the second excitation device drop points; if the average main frequency, the average maximum acceleration, and the average vibration time are all greater than a set threshold, the performance state of the first panel or the second panel is diagnosed as a healthy state.

[0021] In a possible implementation, the mechanical vibration signal monitoring system long-term stably monitors and diagnoses the target panel, including the following steps:

[0022] The vibration signal sensing node collects vibration signals excited by vehicle loads at a plurality of pre-selected second excitation device drop points, which are transmitted to the vibration signal processing and analysis operation platform through the vibration signal aggregation device;

[0023] The vibration signal processing and analysis operation platform processes and analyzes the vibration signals to obtain average main frequency at each of the second excitation device drop points; if the average main frequency at each of the second excitation device drop points is within a set range of average main frequency in a set historical time period, the performance state of the target panel is determined as a healthy state.

[0024] In a possible implementation, the pre-selected plurality of first excitation device drop points include the center of the double-layer continuously reinforced pavement slab and four oblique diagonal corners of the slab at five positions; the pre-selected multiple second excitation device landing points include two board corner diagonal oblique of the first panel or the second panel close to the middle side of the road at three positions at the center point of the line and the center point of the line

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

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

[0027] The average main frequency of the first panel and the average main frequency of the second panel are obtained by the mechanical vibration signal monitoring system respectively;

[0028] 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 value, 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 application provides a double-layer continuous reinforcement pavement panel health state vibration sensing device, which is applied to a vibration sensing performance state monitoring and diagnosis system, and the vibration sensing performance state monitoring and diagnosis system includes an impact energy signal monitoring system and a mechanical vibration signal monitoring system; the device includes:

[0030] The first monitoring module is used for continuous multi-board short-time rapid monitoring diagnosis based on the vibration sensing performance state monitoring and diagnosis system, and includes the following steps: marking the monitoring sequence of continuous multi-boards, wherein the current monitored double-layer continuous reinforced pavement board is marked as a first board, and the next monitored double-layer continuous reinforced pavement board is marked as a second board; the first board is monitored in real time based on the impact energy signal monitoring system and the mechanical vibration signal monitoring system, and the performance state of the first board is diagnosed by combining the monitoring results of the two systems; when the monitoring results of the two systems are inconsistent, the monitoring result obtained based on the impact energy signal monitoring system is determined as the performance state of the first board; the performance state 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 board, the second board is monitored based on the mechanical vibration signal monitoring system, and the performance state of the second board 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 board, the performance state of the second board is diagnosed according to the diagnosis method for the first board.

[0031] The second monitoring module is used for important board long-term stable monitoring diagnosis based on the vibration sensing performance state monitoring and diagnosis system, and includes the following steps: determining a target board, and monitoring the target board for a long term based on the mechanical vibration signal monitoring system, and diagnosing the performance state of the target board by combining the current monitoring result and the historical monitoring result; if the target board is in a problem state, the target board is monitored based on the impact energy signal monitoring system, and the performance state of the target board is determined according to the obtained monitoring result.

[0032] In a third aspect, the present application provides an electronic device, which includes a processor, a memory and a bus, the memory stores machine readable instructions executable by the processor, when the electronic device is running, the processor and the memory communicate through the bus, and the machine readable instructions are executed by the processor to perform the steps of the double-layer continuous reinforced pavement board health state vibration sensing method according to any one of the first aspect.

[0033] In a fourth aspect, the present application provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to perform the steps of the double-layer continuous reinforced pavement board health state vibration sensing method according to any one of the first aspect.

[0034] The embodiment provides a double-layer continuous reinforced pavement plate health state vibration sensing method and device, which combines impact energy and mechanical vibration to jointly diagnose the health state of the double-layer continuous reinforced pavement plate, realizes efficient, accurate and rapid discrimination of the continuous multi-plate bearing capacity of the double-layer continuous reinforced pavement, breaks through the time and place restrictions, and realizes long-term and stable monitoring on the health state of important plates. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0036] Figure 1 A flow chart of the double-layer continuous reinforced pavement plate health state vibration sensing method according to an embodiment of the present application is shown;

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

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

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

[0040] Figure 5 A structural block diagram of the double-layer continuous reinforced pavement plate health state vibration sensing device according to an embodiment of the present application is shown;

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

[0042] Main element symbol explanation:

[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 objectives, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. It should be understood that the drawings in the present application only serve the purpose of description and illustration, 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 according to the actual proportions. The flowchart shows the operations implemented according to some embodiments of the present application. It should be understood that the operations of the flowchart can not be implemented in sequence, and the steps without logical context relationship can be reversed in sequence or implemented simultaneously. In addition, one or more other operations can be added to the flowchart or one or more operations can be removed from the flowchart under the guidance of the content of the present application.

[0045] In addition, the described embodiments are only some of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different 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 claimed present application, but only represents 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 creative labor are within 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 presence of the features declared thereafter, but does not exclude the addition of other features.

[0047] Based on the technical problems proposed in the background, the present application provides a double-layer continuous reinforced pavement panel health state vibration sensing method and device, which can realize efficient, accurate and rapid discrimination of the health state of the double-layer continuous reinforced pavement panel based on combined diagnosis of impact energy and mechanical vibration.

[0048] Referring to the drawings accompanying the Figure 1 The present application provides a double-layer continuous reinforced pavement panel health state vibration sensing method, applied to a vibration sensing performance state monitoring and diagnosis system, wherein the vibration sensing performance state monitoring and diagnosis system comprises an impact energy signal monitoring system and a mechanical vibration signal monitoring system; the method comprises the following steps:

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

[0050] S1, label the monitoring sequence of the continuous multi-panels, wherein the currently monitored double-layer continuous reinforced pavement panel is labeled as the first panel, and the next monitored double-layer continuous reinforced pavement panel is labeled as the second panel;

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

[0052] S3, if the monitoring results based on the impact energy signal monitoring system and the mechanical vibration signal monitoring system are consistent for the first panel, monitoring the second panel based on the mechanical vibration signal monitoring system, and diagnosing the performance state of the second panel by using the relative difference comparison method; if the monitoring results based on the impact energy signal monitoring system and the mechanical vibration signal monitoring system are inconsistent for the first panel, diagnosing the performance state of the second panel according to the diagnosis method for the first panel;

[0053] Performing long-term stable monitoring diagnosis on important panels based on the vibration sensing performance state monitoring and diagnosis system, including the following steps:

[0054] L1, determining a target panel, and performing long-term monitoring on the target panel based on the mechanical vibration signal monitoring system, and diagnosing the performance state of the target panel in combination with the current monitoring result and the historical monitoring result;

[0055] L2, 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 state of the target panel according to the obtained monitoring result.

[0056] In the present application, the vibration sensing performance state monitoring and diagnosis system is used to realize continuous multi-panel short-time rapid monitoring diagnosis and important panel long-term stable monitoring diagnosis for the double-layer continuous reinforced pavement panel. Figure 2 The vibration sensing performance state monitoring and diagnosis system includes an impact energy signal monitoring system (consisting of dark components in the figure), a mechanical vibration signal monitoring system (consisting of light components in the figure) and a notebook computer; wherein, the notebook computer is a shared data processing and analysis operation platform.

[0057] Specifically, referring to the vibration sensing performance state monitoring and diagnosis system shown in the accompanying drawings, Figure 3The impact energy signal monitoring system comprises an impact energy signal excitation device N1, an impact energy signal collection device N2 and an impact energy signal processing and analysis operation platform N3. The impact signal excitation device N1 comprises a 5kg solid iron ball and a traction rope for applying an artificial impact vibration source to the road surface. The impact energy signal collection device N2 comprises a portable stereo sound recorder composed of an audio sensor, a signal processing module, a collection 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 comprises a computer and a matching analysis software for signal processing, analysis and visualized display of results, thereby performing performance state monitoring and diagnosis.

[0058] Referring to the drawings Figure 4 The mechanical vibration signal monitoring system comprises a vibration signal excitation device M1, a vibration signal sensing node M2, a vibration signal gathering device M3 and a vibration signal processing and analysis operation 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 comprises a wireless one-way 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 gathering device M3 mainly comprises 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 operation platform M4. The vibration signal processing and analysis operation platform M4 comprises a computer and a vibration signal matching analysis software which can complete signal processing, analysis and visualized display of results, thereby performing performance state monitoring and diagnosis.

[0059] Specifically, in the continuous multi-plate short-time rapid monitoring and diagnosis, in step S1, the continuous multi-plate monitoring sequence is marked in the driving direction, the current monitored double-layer continuous reinforced pavement plate is marked as the first plate, and the next monitored double-layer continuous reinforced pavement plate is marked as the second plate.

[0060] In steps S2 and S3, when the mechanical vibration signal monitoring system monitors the first plate / second plate in real time, first, the drop point of the excitation device is selected. In the embodiment, three points, i.e., the oblique diagonal corners of the first plate and the second plate on the one side of the road center and the center point of the connecting line, are taken as the drop points of the excitation device, and the excitation sequence is as shown in the drawings Figure 4 ​The way of exciting the mechanical vibration signal of the pavement by using the vibration signal exciting device is to raise the iron ball to a height of 1 m above the drop point by using a traction rope, release the iron ball, and the iron ball does free fall to impact and excite the pavement; the vibration signal sensing node (wireless one-way acceleration sensor) is arranged on the two sides of the crack between the first panel and the second panel, and is diagonally opposite to the board corner The magnetic attraction base is first pasted at the selected point, and then the magnetic attraction bottom of the wireless one-way acceleration sensor is magnetically attracted to the magnetic attraction base; then the impact energy signal collecting equipment collects the impact energy signal and transmits it to the impact energy signal processing and analysis operation platform; the collected impact energy signal is processed and analyzed based on the impact energy signal processing and analysis operation platform, wherein the processing process includes frame division, windowing, filtering and noise reduction, and endpoint detection processing, the analysis process includes time-frequency distribution calculation and main frequency energy proportion calculation, if the calculated average main frequency energy proportion is greater than the set threshold value, the performance state of the double-layer continuous reinforced pavement panel is diagnosed as a healthy state, otherwise it is a problem state.

[0061] When the first panel / second panel is monitored in real time based on the impact energy signal monitoring system, the drop point of the exciting device is also selected first, and in the embodiment of the application, five points in total are selected as the drop point of the exciting device, which are diagonally opposite to the board corner of the first panel / second panel, and the exciting sequence is as marked in Figure 3 The way of exciting the mechanical vibration signal of the pavement by using the impact energy signal exciting device is to raise the iron ball to a height of 1 m above the drop point by using a traction rope, release the iron ball, and the iron ball does free fall to impact and excite 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 through the vibration signal aggregation equipment; 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 of vibration time, maximum acceleration and main frequency, if the average main frequency, the average maximum acceleration and the average vibration time are all greater than the set threshold value, the performance state of the double-layer continuous reinforced pavement panel is diagnosed as a healthy state, otherwise it is a problem state.

[0062] In an embodiment, the frame division step satisfies the following formula:

[0063]

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

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

[0066]

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

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

[0069]

[0070] Wherein, H d (e jw ) is the processed signal, h d (n) is the impulse signal, ω is the signal frequency, ω c is the set filter frequency.

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

[0072]

[0073] Wherein, y i (n) is the windowed impact 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, satisfying the following formula:

[0076]

[0077] φ(θ,τ) = exp(jθ / 2)

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

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

[0080]

[0081] Wherein, φ is the ratio of the main frequency energy to the total energy, W0 is the main frequency energy, W is the total energy, U(t,f) is the complex function of the non-stationary analytic signal x(t), f0 is the main frequency of the signal, and t0 is the time corresponding to the main frequency.

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

[0083]

[0084]

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

[0086] In the embodiments of the present application, in the process of performing continuous multi-plate short-time rapid monitoring and diagnosis and judging the performance state of the first panel or the second panel based on the mechanical vibration signal monitoring system, if the average main frequency of the three excitation device drop points of a single plate is greater than 120 Hz, the average maximum acceleration is less than 1 m / s2, and the average vibration time is less than 40 ms, it is determined that the double-layer continuous reinforced pavement panel is in a healthy state, and in other cases, it is determined that there is a health problem, i.e., a problem state; and in the process of judging the performance state of the first panel or the second panel by the impact energy signal monitoring system, if the average main frequency energy proportion φ of the five excitation device drop points is greater than 16, it is determined that the state is healthy, and in other cases, it is determined that there is a health problem, i.e., a problem state.

[0087] In step S3, based on the discrimination result of the first panel in step S2, the relative difference comparison method is used to diagnose the performance state of the second panel, specifically, if the absolute value of the difference between the average main frequency of the three excitation device drop points of the first panel and the average main frequency of the three excitation device drop points of the second panel / the average main frequency of the three excitation device drop points of the first panel is less than 10%, it is determined that the performance state of the second panel is consistent with that of the first panel.

[0088] Specifically, in the long-term stable monitoring and diagnosis of important plates, in step L1, the difference between the long-term monitoring of the target plate by the mechanical vibration signal monitoring system and the real-time monitoring of the first or second plate by the mechanical vibration signal monitoring system in step S2 is that the target plate is not subjected to impact excitation by the vibration signal excitation device, but is subjected to vibration signals excited by real-time vehicle loads, and the processing and analysis of the collected vibration signals are the same and will not be repeated here. After obtaining the current monitoring result of the target plate (here, the monitoring result specifically refers to the average main frequency of the three excitation device drop points of the target plate), the historical monitoring result of the target plate (here, the monitoring result specifically refers to the average main frequency of the three excitation device drop points of the target plate in the past 24 hours) also needs to be obtained. If the average main frequency at the diagnosis time is within the range of the average main frequency in the past 24 hours ± 35%, the target plate is determined to be in a healthy state; in step L2, the target plate that does not meet the healthy state is further monitored based on the impact energy signal monitoring system. The monitoring process is described in step S2, which is the real-time monitoring process of the first or second plate based on the mechanical vibration signal monitoring system, and will not be repeated here. That is, the result is checked to obtain the final monitoring result.

[0089] It can be seen that the vibration sensing method for the health state of the double-layer continuous reinforced pavement plate provided in the application is 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, and constructs two application paths of continuous multi-plate short-time rapid monitoring and diagnosis and important plate long-term stable monitoring and diagnosis. While reducing the labor and time costs, the vibration sensing method realizes efficient, accurate and rapid discrimination of the bearing capacity of the continuous multi-plate whole composite structure, and breaks through the time and place restrictions to realize long-term stable monitoring and diagnosis of the health state of important plates.

[0090] Based on the same inventive concept, the embodiment of the application further provides a vibration sensing device for the health state of a double-layer continuous reinforced pavement plate, which is applied to a vibration sensing performance state monitoring and diagnosis system, and the vibration sensing performance state 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 for continuous multi-board short-time rapid monitoring and diagnosis based on the vibration perception performance state monitoring and diagnosis system, and includes the following steps: marking the monitoring sequence of continuous multi-boards, wherein the currently monitored double-layer continuous reinforced pavement board is marked as a first board, and the next monitored double-layer continuous reinforced pavement board is marked as a second board; the first board is monitored in real time based on the impact energy signal monitoring system and the mechanical vibration signal monitoring system, and the performance state of the first board is diagnosed based on the monitoring results of the two systems; when the monitoring results of the two systems are inconsistent, the monitoring result obtained based on the impact energy signal monitoring system is determined as the performance state of the first board; the performance state 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 board, the second board is monitored based on the mechanical vibration signal monitoring system, and the performance state of the second board 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 board, the performance state of the second board is diagnosed according to the diagnosis method for the first board.

[0092] The second monitoring module 502 is used for long-term stable monitoring and diagnosis of important boards based on the vibration perception performance state monitoring and diagnosis system, and includes the following steps: determining a target board, and monitoring the target board for a long time based on the mechanical vibration signal monitoring system, and diagnosing the performance state of the target board based on the current monitoring result and the historical monitoring result; if the target board is in a problem state, the target board is monitored based on the impact energy signal monitoring system, and the performance state of the target board is determined based on the obtained monitoring result.

[0093] In some embodiments, 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 the first monitoring module 501 or the second monitoring module 502 monitors the double-layer continuous reinforced pavement board based on the impact energy signal monitoring system, including: applying impact excitation to the double-layer continuous reinforced pavement board at a plurality of first excitation device drop points based on the impact energy signal excitation device; collecting impact energy signals based on the impact energy signal acquisition 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 the plurality of first excitation device drop points; wherein if the average main frequency energy proportion is greater than a set threshold, the performance state of the double-layer continuous reinforced pavement board is diagnosed as a healthy state.

[0094] In some embodiments, the mechanical vibration signal monitoring system comprises 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: at a plurality of pre-selected second excitation device drop points, applying 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 them to the vibration signal processing and analysis operation platform through 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 drop points; 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 state of the first panel or the second panel is diagnosed as healthy.

[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 drop points, collecting vibration signals excited by vehicle loads based on the vibration signal sensing node and transmitting them to the vibration signal processing and analysis operation platform through 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 drop points; wherein if the average main frequency at the current plurality of second excitation device drop points is within the set range of the average main frequency within the set historical time period, the performance state of the target panel is determined to be healthy.

[0096] In some embodiments, the plurality of pre-selected first excitation device drop points include five positions in the middle of the double-layer continuous reinforced pavement panel and four diagonal corners of the panel The plurality of pre-selected second excitation device drop points include three positions near the middle of the first panel or the second panel two diagonal corners of the panel and the center point of the connecting line.

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

[0098] In some embodiments, the first monitoring module 501 adopts a relative difference comparison method to diagnose the performance state of the second panel, including: acquiring the average main frequency of the first panel and the second panel based on the mechanical vibration signal monitoring system respectively; 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 judged that the performance state of the second panel is consistent with the performance state of the first panel.

[0099] The double-layer continuous reinforced pavement panel health state vibration sensing device provided by the application combines the impact energy and mechanical vibration to jointly diagnose the health state of the double-layer continuous reinforced pavement panel, realizes efficient, accurate and rapid discrimination of the continuous multi-panel bearing capacity of the double-layer continuous reinforced pavement, breaks through the time and place restrictions, and realizes long-term stable monitoring of the health state of important panels.

[0100] Based on the same concept of the application, the specification attached Figure 6 As shown in the electronic device 600 provided by the embodiments of the application, the electronic device 600 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 the components. The electronic device 600 can optionally include a user interface 603, including a display (for example, a touch screen, an LCD, a CRT, holographic imaging (Holographic) or a projector (Projector) and the like), a keyboard or a clicking device (for example, a mouse, a trackball, a touchpad or a touch screen and the like).

[0101] The memory 605 can include a read-only memory and a random access memory, and provide instructions and data for the processor 601. A part of the memory 605 can also include a non-volatile random access memory (NVRAM).

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

[0103] The operating system 6051 includes various system programs, used to realize various basic services and process hardware-based tasks;

[0104] The application program module 6052 includes various application programs, such as a desktop (launcher), a media player (MediaPlayer), a browser (Browser) and the like, used to realize various application services.

[0105] In the embodiment of the present application, the processor 601 is configured to execute the steps in the method for sensing the health state of a double-layer continuous reinforced pavement slab by calling the program or instructions stored in the memory 605, and the health state of the double-layer continuous reinforced pavement slab can be efficiently, accurately and quickly determined based on the combined diagnosis of impact energy and mechanical vibration.

[0106] The present application also provides a computer readable storage medium having a computer program stored thereon, and the computer program is configured to execute the steps in the method for sensing the health state of a double-layer continuous reinforced pavement slab when executed by a processor.

[0107] Specifically, the storage medium can be a general storage medium, such as a mobile disk, a hard disk, etc., and the computer program stored in the storage medium is configured to execute the method for sensing the health state of a double-layer continuous reinforced pavement slab when 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 manners. The described device embodiments are merely illustrative, and the division of units is merely logical function division, and there can be another division manner in actual implementation. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed coupling or direct coupling or communication connection between units can be indirect coupling or communication connection through some communication interfaces, and can be electrical, mechanical or other forms.

[0109] The units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0110] In addition, each functional unit in the embodiments provided in the present application can be integrated in one processing unit, or each unit can be a physically independent unit, or two or more units can be integrated in one unit.

[0111] If the functions are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application essentially or the parts of the prior art that make contributions or parts of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes.

[0112] Finally, it should be noted that: the above embodiments are only specific embodiments of the present application, which are used to illustrate the technical solutions of the present application, but not to limit them. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily think of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed by the present application, or replace some technical features with equivalent ones. The modifications, changes or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application. They should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A health state vibration sensing method for a double-layer continuous reinforced pavement slab, characterized in that, The application is applied to a vibration sensing performance state monitoring and diagnosis system, which comprises an impact energy signal monitoring system and a mechanical vibration signal monitoring system; the method comprises the following steps: Based on the vibration sensing performance state monitoring and diagnosis system, continuous multi-plate short-time rapid monitoring and diagnosis is carried out, comprising the following steps: The monitoring sequence of the continuous multi-plates is marked, wherein the currently monitored double-layer continuous reinforced pavement plate is marked as the first plate, and the next monitored double-layer continuous reinforced pavement plate is marked as the second plate; Based on the impact energy signal monitoring system and the mechanical vibration signal monitoring system, the first plate is monitored in real time, and the performance state of the first plate is diagnosed by combining the monitoring results of the two; wherein when the monitoring results of the two are inconsistent, the monitoring result based on the impact energy signal monitoring system is determined as the performance state of the first plate; the performance state is a healthy state or a problem state; If the monitoring results based on the impact energy signal monitoring system and the mechanical vibration signal monitoring system for the first plate are consistent, the second plate is monitored based on the mechanical vibration signal monitoring system, and the performance state of the second plate is diagnosed by using the relative difference comparison method; if the monitoring results based on the impact energy signal monitoring system and the mechanical vibration signal monitoring system for the first plate are inconsistent, the performance state of the second plate is diagnosed according to the diagnosis method for the first plate; Based on the vibration sensing performance state monitoring and diagnosis system, important plate long-term stable monitoring and diagnosis is carried out, comprising the following steps: The target plate is determined, and the target plate is monitored for a long time based on the mechanical vibration signal monitoring system, and the performance state of the target plate is diagnosed by combining the current monitoring result and the historical monitoring result; If the target plate is in a problem state, the target plate is monitored based on the impact energy signal monitoring system, and the performance state of the target plate is determined according to the obtained monitoring result.

2. The health state vibration sensing method of a double-layer continuous reinforced pavement slab according to claim 1, characterized in that, The impact energy signal monitoring system comprises an impact energy signal excitation device, an impact energy signal acquisition device and an impact energy signal processing and analysis operation platform; wherein the double-layer continuous reinforced pavement plate is monitored based on the impact energy signal monitoring system, comprising the following steps: The double-layer continuous reinforced pavement plate is impacted and excited based on the impact energy signal excitation device at a plurality of first excitation device drop points selected in advance; The impact energy signal is collected based on the impact energy signal acquisition device and transmitted to the impact energy signal processing and analysis operation platform; The collected impact energy signal is processed and analyzed based on the impact energy signal processing and analysis operation platform, and the average main frequency energy proportion at the plurality of first excitation device drop points is obtained; wherein if the average main frequency energy proportion is greater than a set threshold value, it is diagnosed that the performance state of the double-layer continuous reinforced pavement plate is a healthy state.

3. The method according to claim 2, wherein the method is characterized by: The mechanical vibration signal monitoring system comprises 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, based on the mechanical vibration signal monitoring system, the first panel or the second panel is monitored, comprising the following steps: At the pre-selected multiple second excitation device drop 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 through the vibration signal aggregation device; Based on the vibration signal processing and analysis operation platform, the vibration signal is processed and analyzed to obtain the average main frequency, average maximum acceleration and average vibration time at the multiple second excitation device drop points; 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 state of the first panel or the second panel is diagnosed as healthy state. Wherein, 4. The health state vibration sensing method of a double-layer continuous reinforced pavement slab according to claim 3, characterized in that, Based on the mechanical vibration signal monitoring system, the target panel is long-term stably monitored and diagnosed, comprising the following steps: At the pre-selected multiple second excitation device drop 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 through the vibration signal aggregation device; Based on the vibration signal processing and analysis operation platform, the vibration signal is processed and analyzed to obtain the average main frequency at the multiple second excitation device drop points; wherein, if the average main frequency at the multiple second excitation device drop points is within the set range of the average main frequency in the set historical time period, the performance state of the target panel is judged as healthy state. The pre-selected multiple first excitation device drop points include five positions at the center of the double-layer continuous reinforced pavement panel and the four panel corners oblique diagonal 20√5 cm; the pre-selected multiple second excitation device drop points include three positions at the center of the line and the two panel corners oblique diagonal 20√5 cm near the middle side of the first panel or the second panel.

5. The method according to claim 4, wherein the method is characterized by, Wherein, 6. The health state vibration sensing method of a double-layer continuous reinforced pavement slab according to claim 5, characterized in that, Based on the impact energy signal processing and analysis operation platform, the impact energy signal is processed, including framing, windowing, filtering and noise reduction, and endpoint detection, and the analysis includes time-frequency distribution and main frequency energy proportion calculation; based on the vibration signal processing and analysis operation platform, the vibration signal is processed, including time-domain to frequency-domain signal conversion, and the analysis includes extraction of three vibration characteristic parameters of vibration time, maximum acceleration and main frequency. The performance state of the second panel is diagnosed by the relative difference comparison method, comprising the following steps:

7. The method according to claim 6, wherein the method is characterized by, Based on the mechanical vibration signal monitoring system, the average main frequency of the first panel and the second panel is obtained respectively; If the difference between the average main frequency of the first panel and the average main frequency of the second panel is less than the set threshold value, it is judged that the performance state of the second panel is consistent with that of the first panel. ​ 8. A vibration sensing device for health state of double-layer continuously reinforced pavement slab, characterized in that, The device is applied to a vibration perception performance state monitoring and diagnosis system, the vibration perception performance state monitoring and diagnosis system comprises an impact energy signal monitoring system and a mechanical vibration signal monitoring system; the device comprises: A first monitoring module is configured to perform continuous multi-board short-time rapid monitoring and diagnosis based on the vibration perception performance state monitoring and diagnosis system, including: marking a continuous multi-board monitoring sequence, wherein a currently monitored double-layer continuous reinforced pavement board is marked as a first board, and a next monitored double-layer continuous reinforced pavement board is marked as a second board; the first board is monitored in real time based on the impact energy signal monitoring system and the mechanical vibration signal monitoring system, and the performance state of the first board is diagnosed based on the monitoring results of the two systems; when the monitoring results of the two systems are inconsistent, the monitoring result obtained based on the impact energy signal monitoring system is determined as the performance state of the first board; the performance state 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 board, the second board is monitored based on the mechanical vibration signal monitoring system, and the performance state of the second board 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 board, the performance state of the second board is diagnosed according to the diagnosis method for the first board; A second monitoring module is configured to perform important board long-term stable monitoring and diagnosis based on the vibration perception performance state monitoring and diagnosis system, including: determining a target board, and performing long-term monitoring on the target board based on the mechanical vibration signal monitoring system, and diagnosing the performance state of the target board based on the current monitoring result and the historical monitoring result; if the target board is in a problem state, the target board is monitored based on the impact energy signal monitoring system, and the performance state of the target board is determined based on the obtained monitoring result.

9. An electronic device, comprising: The device comprises: A processor, a memory and a bus, the memory stores machine readable instructions executable by the processor, when the electronic device is running, the processor and the memory communicate through the bus, and the machine readable instructions are executed by the processor to perform the steps of the double-layer continuous reinforced pavement board health state vibration perception method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program, and the computer program is executed by the processor to perform the steps of the double-layer continuous reinforced pavement board health state vibration perception method according to any one of claims 1 to 7.

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