Airport runway health condition monitoring system and method

Abstract

The invention discloses a system for monitoring the health condition of an airport track. The system comprises a signal demodulator, an integrated assembly, a piezoelectric unit and a plurality of sensor units, the plurality of sensor units are electrically connected with the signal demodulator through a cable, the signal demodulator is electrically connected with the integrated assembly through a cable, and the integrated assembly is electrically connected with the piezoelectric unit; the integrated assembly comprises a storage battery, an industrial personal computer, a storage unit and a wireless signal transmitter which are integrated; the storage battery, the industrial personal computer, the storage unit and the wireless signal transmitter are electrically connected, and the storage battery is electrically connected with the piezoelectric unit. The invention further discloses an airport track health condition monitoring method. The technical problem of how to monitor the health condition of the airport runway in real time and carry out rapid positioning is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of airport road engineering, and particularly to an airport runway health condition monitoring system and method. Background Art

[0002] To ensure the safe operation of aircraft in the flight area, it is necessary to understand the health condition of the runway in the flight area. According to the regulations of the Civil Aviation Administration of China, airport management departments usually conduct a comprehensive inspection of the runway in the flight area once every four years, announce the PCN results of the airport according to the inspection results, and enable the airport management department to master the remaining service life of the airport runway. These are two comprehensive indicators that can represent the structural and functional conditions of the airport runway and are of great significance to each airport. During the day, there are aircraft operating on the airport runway. Therefore, most inspections are carried out after the aircraft have stopped flying at night. The existing airport runway health condition is detected by combining HWD with ground penetrating radar, with very low detection efficiency and inaccurate detection results. In addition, the flight area is very large, with many cement concrete pavement slabs divided into blocks. Most inspections of the flight area are spot checks on the pavement slabs, and then full inspections are carried out on areas with serious pavement diseases. When detecting in such an environment, it often takes a lot of time to accurately locate an area due to the night light problem, the lack of obvious surrounding reference objects, and the large area of the flight area, resulting in low detection efficiency. Moreover, when the airport management department conducts pavement condition inspections, it usually takes 2 columns and 10 pavement slabs as a small detection unit, which involves the problem of detection direction. Because in the actual detection process, the detection results of this time are often very different from those of the previous time due to inconsistent detection directions or detection environments in the front and back. In addition, the data of airport pavement tests usually need to be analyzed by professional personnel and do not have instantaneity. Continuous pavement monitoring will generate a large amount of data, and special tools are needed to deeply mine and analyze the data to find the small changes and potential trends in the pavement structural performance and predict the remaining life of the pavement structure. Therefore, there is an urgent need to propose an airport runway health condition monitoring system and method to solve the above technical problems. Summary of the Invention

[0003] The main object of the present invention is to propose an airport runway health condition monitoring system and method, aiming to solve the technical problem of how to monitor the health condition of the airport runway in real time and perform rapid positioning.

[0004] To achieve the above object, the present invention provides an airport runway health condition monitoring system, wherein the airport runway health condition monitoring system includes:

[0005] A signal demodulator, an integrated component, a piezoelectric unit, and several sensor units; several of the sensor units are electrically connected to the signal demodulator through a cable, the signal demodulator is electrically connected to the integrated component through a cable, and the integrated component is electrically connected to the piezoelectric unit; the integrated component includes an integrated battery, an industrial computer, a storage unit, and a wireless signal transmitter; the battery, the industrial computer, the storage unit, and the wireless signal transmitter are electrically connected, and the battery is electrically connected to the piezoelectric unit.

[0006] One of the preferred solutions is that the airport runway health monitoring system is encapsulated by an elastomeric polymer to obtain a prefabricated module, and the prefabricated module is placed between the slab layer and the water-stable base layer of the newly built runway or the prefabricated module is placed between the slab layers on the water-stable base layer of the existing runway.

[0007] One of the preferred solutions is that several of the sensor units are respectively arranged at the corners of the prefabricated module.

[0008] One of the preferred solutions is that the sensor module includes an optical fiber sensor, a displacement sensor, a pressure sensor, an acceleration sensor, and a temperature and humidity sensor.

[0009] One of the preferred solutions is that the displacement sensor, the pressure sensor, and the acceleration sensor work based on the principle of the direct piezoelectric effect.

[0010] One of the preferred solutions is that the battery uses a lithium iron phosphate battery.

[0011] One of the preferred solutions is that the industrial computer uses a single-chip microcomputer of model STM32WL.

[0012] One of the preferred solutions is that the wireless signal transmitter uses an ultra-low-power broadband wake-up radio frequency transceiver.

[0013] One of the preferred solutions is that the piezoelectric unit uses an ultrasonic generator, and the piezoelectric unit is placed at the corners and edges of the prefabricated module.

[0014] An airport runway health monitoring method includes the following steps:

[0015] S1. Encapsulate the airport runway health monitoring system with an elastomeric polymer to obtain a prefabricated module, and install the prefabricated module at the corresponding position of the runway slab;

[0016] S2. The battery receives the electrical energy generated by the piezoelectric unit based on the inverse piezoelectric effect to supply power to the system, and the sensor units respectively collect information on stress, strain, acceleration, displacement, temperature and humidity changes, and settlement conditions of the lower structure of the airport runway slab;

[0017] S3. The signal demodulator converts the collected information into corresponding numerical values and stores them in the storage unit. The working condition machine processes the collected data immediately to monitor the health status of the airport runway in real time;

[0018] S4. Number each prefabricated module and sensor unit, network each system based on the local area network, and send the position of the prefabricated module through the wireless signal transmitter to achieve precise positioning of the problematic pavement slabs in each area of the airport runway.

[0019] In the above technical solution of the present invention, the airport runway health status monitoring system includes: a signal demodulator, an integrated component, a piezoelectric unit, and several sensor units; several said sensor units are electrically connected to the signal demodulator through a cable, the signal demodulator is electrically connected to the integrated component through a cable, and the integrated component is electrically connected to the piezoelectric unit; the integrated component includes an integrated battery, an industrial control computer, a storage unit, and a wireless signal transmitter; the battery, the industrial control computer, the storage unit, and the wireless signal transmitter are electrically connected to each other, and the battery is electrically connected to the piezoelectric unit. The present invention solves the technical problem of how to monitor the health status of the airport runway in real time and perform rapid positioning.

[0020] In the present invention, the dynamic response data of the pavement slab caused by the passing of an aircraft or an airport support vehicle is obtained in real time through the airport runway health status monitoring system, which provides a basis for subsequent analysis of the health status of the pavement structure based on the dynamic response data of the pavement slab and the hydrogeological information. If a situation affecting flight safety occurs, the airport management personnel can be notified immediately.

[0021] In the present invention, the airport runway health status monitoring system is encapsulated with an elastomeric polymer to obtain a prefabricated module. For a newly built pavement slab, the prefabricated module can be placed between the pavement slab layer and the water-stable base layer. For an existing pavement slab, the prefabricated module can be placed between the pavement slab layer on the water-stable base layer and the pavement slab layer, and finally, the caulking material is poured. There can be various setting methods, and the adaptability is strong. Description of the Drawings

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0023] Figure 1 It is the first schematic diagram of an airport runway health status monitoring system according to an embodiment of the present invention;

[0024] Figure 2It is the first installation schematic diagram of a monitoring system for the health status of an airport runway in an embodiment of the present invention;

[0025] Figure 3 It is the second schematic diagram of a monitoring system for the health status of an airport runway in an embodiment of the present invention;

[0026] Figure 4 It is the second installation schematic diagram of a monitoring system for the health status of an airport runway in an embodiment of the present invention;

[0027] Figure 5 It is the comparison diagram of the strain time history of the runway slab measured and numerically simulated by the optical fiber sensor under the runway slab when the test vehicle passes in an embodiment of the present invention;

[0028] Figure 6 It is the schematic diagram of the influencing factors of the health status of an airport runway in an embodiment of the present invention;

[0029] Figure 7 It is the structural diagram of the health status prediction model of an airport runway in an embodiment of the present invention;

[0030] Figure 8 It is the PCN distribution map of the airport runway obtained by the system according to the monitoring data analysis in an embodiment of the present invention;

[0031] Figure 9 It is the remaining life distribution map of the airport runway obtained by the system according to the monitoring data analysis in an embodiment of the present invention;

[0032] Figure 10 It is the schematic diagram of a method for monitoring the health status of an airport runway in an embodiment of the present invention.

[0033] Explanation of the reference numerals in the drawings:

[0034] 1. Sensor unit; 2. Signal demodulator; 3. Storage battery; 4. Industrial control computer; 5. Storage unit; 6. Wireless signal transmitter; 7. Piezoelectric unit; 8. Runway slab layer; 9. Cement stabilized base; 10. Prefabricated module.

[0035] The realization, functional features and advantages of the object of the present invention will be further described with reference to the drawings in combination with the embodiments. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0037] It should be noted that all directional indications (such as up, down, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture (as shown in the attached drawings). If the specific posture changes, the directional indication will also change accordingly.

[0038] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features.

[0039] Moreover, the technical solutions between various embodiments of the present invention can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0040] See Figures 1 - 9 , according to one aspect of the present invention, the present invention provides an airport runway health condition monitoring system, wherein the airport runway health condition monitoring system includes: a signal demodulator 2, an integrated component, a piezoelectric unit 7, and a plurality of sensor units 1; a plurality of the sensor units 1 are electrically connected to the signal demodulator 2 through a cable, the signal demodulator 2 is electrically connected to the integrated component through a cable, and the integrated component is electrically connected to the piezoelectric unit 7; the integrated component includes an integrated battery 3, an industrial control computer 4, a storage unit 5, and a wireless signal transmitter 6; the battery 3, the industrial control computer 4, the storage unit 5, and the wireless signal transmitter 6 are electrically connected to each other, and the battery 3 is electrically connected to the piezoelectric unit 7.

[0041] Specifically, in this embodiment, the airport runway health condition monitoring system is encapsulated by an elastomeric polymer to obtain a prefabricated module 10, and the prefabricated module 10 is placed between the pavement slab layer 8 and the water-stable base layer 9 of the newly built runway or the prefabricated module 10 is placed between the pavement slab layer 8 and the pavement slab layer 8 on the water-stable base layer 9 of the existing runway.

[0042] Specifically, in this embodiment, the sensor unit includes an optical fiber sensor, a displacement sensor, a pressure sensor, an acceleration sensor, and a temperature and humidity sensor; the sensor unit is used to collect information on stress, strain, temperature and humidity changes, and settlement conditions of the lower structure of the runway pavement slab in real time. The present invention does not make specific limitations, and other types of sensors can also be set according to requirements for the sensor unit.

[0043] Specifically, in this embodiment, the displacement sensor, pressure sensor, and acceleration sensor operate based on the principle of the direct piezoelectric effect. The direct piezoelectric effect refers to the phenomenon that when a piezoelectric crystal or material is subjected to an external force in a fixed direction, internal polarization occurs, and at the same time, opposite charges are generated on two surfaces. When the external force is removed, the crystal returns to the uncharged state. When the direction of the external force changes, the polarity of the charges also changes. The amount of charge generated by the crystal under the action of the force is proportional to the magnitude of the external force. The piezoelectric sensor uses organic piezoelectric materials, which have rich raw material sources, can be mass-produced, have a low price, and have unique advantages after matching with the acoustic impedance of air. It is a new type of electro-acoustic material with great development potential. With an advanced data acquisition device, the sensor unit 1 can comprehensively monitor the health status of the airport runway, which is more efficient and accurate than traditional single-parameter monitoring, providing comprehensive data support.

[0044] Specifically, in this embodiment, the number and positions of the sensor unit 1 and the signal demodulator 2 can be optimized and arranged under the pavement slab according to the numerical simulation results. In the present invention, several sensor units 1 are respectively arranged at the corners of the precast module 10. The present invention does not make specific limitations and can be specifically set according to needs. The airport runway health condition monitoring system is encapsulated by an elastomeric polymer to obtain the precast module 10, and the parameters of the precast module 10 are calibrated and installed uniformly at the construction site, which can save the construction time on site and also protect each part of the system, ensuring the stable performance of each part. The elastomeric polymer has high stability and durability in the environment under the pavement slab, which can make the system have high stability. The system forms an integral body through the elastomeric polymer, that is, the precast module 10, which has the same planar size as the pavement slab to prevent uneven deformation of the pavement structure.

[0045] Specifically, in this embodiment, the signal demodulator 2 is used to restore the modulated signal collected by the sensor to obtain the original signal, and information such as amplitude modulation, frequency modulation, and phase modulation of the original signal. Through the signal demodulator 2, various parameter information of the original signal, such as amplitude, frequency, and phase, can be obtained, so as to achieve accurate analysis and processing of the signal.

[0046] Specifically, in this embodiment, the storage battery 3 is buried under the road panel and has a long service life under the protection of the polymer outer shell. The storage battery 3 adopts an iron-lithium battery. The lithium battery has the advantages of a wide voltage range, good sealing, a long storage life, a wide operating temperature range, and is suitable for miniaturization and thinness. The iron-lithium battery is in the form of a blade battery. The working principle of the blade battery is similar to that of a traditional lithium-ion battery. It mainly relies on the movement of lithium ions between the positive and negative electrodes to charge and discharge. The unique design of the blade battery allows lithium ions to move faster, thereby improving the charging and discharging speed and efficiency of the battery. The blade battery ignores the module concept inherent in traditional batteries and adopts a module-free structure to directly integrate the battery cell into the battery pack, greatly improving the space utilization and production efficiency of the battery pack. It directly stretches the single cell and fixes it on the frame of the battery pack. In the blade battery, the battery cell becomes a part of the structural member, which is both a power supply component and a beam of the battery pack. This design allows the battery to accommodate more cells under the same volume, thereby achieving higher energy density and longer battery life.

[0047] Specifically, in this embodiment, the battery 3, industrial computer 4, storage unit 5 and wireless signal transmitter 6 form an integrated component. The battery 3, industrial computer 4, storage unit 5 and wireless signal transmitter 6 are electrically connected, instead of using other advanced wireless communication protocols. This is because wireless communication may interfere with the normal take-off and landing of the aircraft. The battery 3 receives the electric energy generated by the piezoelectric unit 7 under pressure, and then uses it to power the various electrical components of the system. In order to prevent the system from not working properly after the piezoelectric unit 7 fails, the battery 3 also has a wireless charging function. In addition, the battery power between the various systems after networking can be shared through the industrial computer; the piezoelectric unit 7 is connected in series with the battery 3, and a modular architecture is adopted to facilitate the upgrade of existing software components, maintain the advancement and competitiveness of the system, and the entire system also adopts an open API reception design, allowing cooperative developers to develop new functional modules according to the protocol and actual needs, and maintain the openness and scalability of the system.

[0048] Specifically, in this embodiment, the industrial computer 4 uses a single-chip microcomputer of model STM32WL; the single-chip microcomputer uses an AI chip with a dual-core and ultra-low-power architecture, which extends the battery life and the wireless communication distance. In the underground environment, the single-chip microcomputer also has good working performance and is suitable for the monitoring of the substructure of the airport pavement mentioned in the present invention; the dual-core architecture chip used by the single-chip microcomputer enables the industrial computer 4 to use edge computing technology to achieve real-time data preprocessing and transmission. By immediately processing the collected data, when an abnormal situation endangering flight safety is detected, relevant information is quickly pushed to the mobile devices of the maintenance team with a higher priority, ensuring that the airport management department can take actions in the first time. After the preprocessed data is transmitted to the terminal, it can be further analyzed in depth; the industrial computer 4 applies deep learning models such as convolutional neural network and long short-term memory network to build a runway health condition prediction model. Through the analysis of historical monitoring data, the system can identify subtle but critical trends in the change of pavement structural performance, give early warnings of possible structural damages, provide scientific and reasonable maintenance suggestions, and extend the service life of the runway. The present invention does not make specific limitations, and the runway health status prediction model specifically adopted can be achieved by conventional technical means.

[0049] Specifically, in this embodiment, when the storage unit 5 is working, it collects and stores the information collected by the sensor unit 1. The sampling frequency of the information is set so that the storage unit 5 can store 7 days of information without being overwritten. Even in the busiest airport, there will be at least one hour of suspension of flights for maintenance guarantee every week. During this flight suspension period, the wireless signal transmitter 6 starts to work and transmits the information stored in the storage unit 5 in the form of radio signals; at other times, the wireless signal transmitter 6 is in a sleep state, so that the radio signals do not interfere with the normal takeoff and landing of the aircraft; generally speaking, this work can be automatically achieved by setting the industrial computer 4, but for safety reasons, it is necessary for the night shift personnel to manually start this information transmission process; under the control of the industrial computer 4, the storage unit 5 can analyze according to the set relevant standards of the airport pavement and evaluate the runway health status, and automatically generate a professional report on the health status of the airport pavement including content such as PCN distribution map and predicted life distribution map; all reports meet the relevant specification requirements of the International Civil Aviation Organization and the Civil Aviation Administration of China, providing a strong basis for the decision-making of the management department.

[0050] Specifically, in this embodiment, the wireless signal transmitter 6 employs an ultra-low-power broadband wake-up radio frequency transceiver. During the period when the main communication radio frequency transceiver disconnects to save power, this broadband wake-up radio frequency receiver can monitor the wake-up signal. This always-on radio frequency receiver has a negligible impact on battery power consumption and provides a standby mode, quickly responding after receiving the correct radio frequency wake-up signal. The wireless signal transmitter 6, based on Beidou navigation system technology and combined with a local enhanced wireless sensor network, achieves precise positioning of any fault point on the runway of the airport flight area, with an error not exceeding ±0.5 meters, reducing the time for airport operation and maintenance personnel to find the problematic runway panel and improving work efficiency. The wireless signal transmitter 6 selects the LoRaWAN low-power wide area network protocol as the wireless communication means, not only reducing energy consumption but also enhancing the system's coverage and anti-interference capabilities. At the same time, all communication modules support over-the-air upgrade, facilitating later maintenance and technology updates.

[0051] Specifically, in this embodiment, the sensor unit 1, the signal demodulator 2, and the integrated component are connected by a cable, and the cable is wrapped in a high polymer with high stability and durability, suitable for the environment under the runway panel, enabling the entire structure to have a long lifespan. The piezoelectric unit 7 adopts piezoelectric drive technology, and its basic principle is based on the inverse piezoelectric effect of piezoelectric materials, generating rotational motion by controlling its mechanical deformation. The piezoelectric unit 7 uses an ultrasonic generator, and the piezoelectric unit 7 is placed at the corners and edges of the precast module 10. Based on the inverse piezoelectric effect and using mechanical vibration in the ultrasonic frequency domain as the drive technology, rotational motion is generated through mechanical transformation, cutting the magnetic induction line to generate electrical energy. The piezoelectric unit 7 can charge the battery 3 using the pressure generated when an aircraft or a vehicle in the flight area passes by. After networking, the electrical energy of the battery 3 among the systems can be shared with each other through the industrial control computer 4; or charge the battery 3 under the runway panel through the wireless charging function. The piezoelectric unit 7 is generally placed at the corners and edges of the runway panel because, compared with the middle of the panel, these positions will generate greater deformation under the action of load, enabling the piezoelectric device to generate more electrical energy using the inverse piezoelectric effect. All hardware components of the system are manufactured according to the IP68 protection level standard, with waterproof and anti-corrosion characteristics, and have passed waterproof and anti-corrosion tests to ensure that the system can still work normally for a long time in the underground environment.

[0052] According to another aspect of the present invention, referring to Figure 10 , the present invention provides a method for monitoring the health status of an airport runway, wherein the method for monitoring the health status of an airport runway includes the following steps:

[0053] S1. Package the airport runway health status monitoring system with an elastomeric polymer to obtain a precast module 10, and install the precast module 10 at the corresponding position of the runway panel;

[0054] S2. The storage battery 3 receives the electric energy generated by the piezoelectric unit 7 based on the inverse piezoelectric effect to power the system. The sensor unit 1 respectively collects information on stress, strain, acceleration, displacement, temperature and humidity changes, and settlement conditions of the lower structure of the airport pavement slab.

[0055] S3. The signal demodulator 2 converts the collected information into corresponding numerical values and stores them in the storage unit 5. The working condition machine 4 immediately processes the collected data to monitor the health status of the airport pavement in real time.

[0056] S4. Number each precast module 10 and the sensor unit 1, network each system based on the local area network, and send the position of the precast module through the wireless signal transmitter 6 to achieve precise positioning of the problematic pavement slabs in each area of the airport pavement.

[0057] Specifically, in this embodiment, when it is necessary to utilize the airport runway health condition monitoring and rapid positioning system provided by the present invention, first, the installation form needs to be determined according to the pavement working conditions. For a newly built pavement structure, the prefabricated module 10 can be directly placed between the pavement slab layer 8 and the cement stabilized base course 9; for an existing pavement, the prefabricated module 10 can be placed between the pavement slab layer 8 on the cement stabilized base course 9 and the pavement slab layer 8, the prefabricated module 10 is attached to the periphery of the pavement slab, and then the chiseled caulking material is refilled; the working principles of the two prefabricated modules 10 are the same. The airport runway health condition monitoring and rapid positioning system is pre-assembled into an integral body through an elastomeric polymer in the factory to form the prefabricated module 10, and the parameters of the integral body are calibrated, and then uniformly installed during on-site construction, which can save the on-site construction time and also protect each part of the system to ensure the stable performance of each part; in addition, the polymer has high stability and durability in the environment under the pavement slab, which can make the system have high stability; all hardware components of the system are manufactured in accordance with the IP68 protection level standard, with waterproof and anti-corrosion characteristics, and have passed waterproof and anti-corrosion tests to ensure that they can still work normally for a long time in the underground environment; after the airport is opened to traffic, when an aircraft or a flight area support vehicle passes above the pavement slab, the piezoelectric units 7 installed at the corners and edges of the pavement slab generate electrical energy based on the inverse effect of the piezoelectric material due to the deformation of the pavement slab under pressure. The storage battery 3 receives the electrical energy generated by the piezoelectric units 7 under pressure and then is used to supply power to each electrical component in this system. To prevent the system from not working after the piezoelectric units 7 fail, the storage battery 3 also has a wireless charging function, and the piezoelectric units 7 are connected in series with the storage battery 3; after networking, the electrical energy of the storage battery 3 between each system is shared with each other through the industrial control computer 4; the storage battery 3 uses blade batteries, and the battery cells have become a part of the structural components, being both power supply components and the beams of the battery pack; this design enables the battery to accommodate more battery cores in the same volume, thereby achieving higher energy density and longer battery life; the fiber Bragg grating sensors, displacement sensors, pressure sensors, acceleration sensors, and temperature and humidity sensors in the sensor unit 1 can respectively monitor the stress, strain, temperature and humidity changes, and settlement conditions of the lower structure of the runway pavement slab, and other types of sensors can also be added as needed.Among them, the temperature and humidity sensors arranged between the soil base and the base course can also be integrated into this system to measure the humidity condition of the base course; the acceleration sensor in the sensor unit 1 can record the acceleration of the pavement structure when the aircraft and vehicle loads above pass by, and analyze the health condition of the pavement slab through the vibration response of the pavement structure, and compare it with the health condition of the pavement slab obtained from the strain of the pavement slab measured by the fiber optic sensor under the pavement slab when the test vehicle passes by; the electrical signals collected by the sensor unit 1 are converted into corresponding values after passing through the signal demodulator 2 and stored in the storage unit 5. The sampling frequency of the information is set so that the storage unit 5 can store 7 days of information without being overwritten. Even in the busiest airport, there will be at least one 1-hour suspension of flights for maintenance every week. During this flight suspension period, the wireless signal transmitter 6 starts to work and transmits the information stored in the storage unit 5 in the form of radio signals. At other times, the wireless signal transmitter 6 is in a sleep state, so that the radio signals do not interfere with the normal takeoff and landing of aircraft; after receiving the correct RF wake-up signal, it can respond quickly; generally speaking, this work can be automatically realized by setting the industrial control computer 4, but for safety reasons, the night duty personnel need to manually start this information transmission process; under the control of the industrial control computer 4, the storage unit 5 can analyze the monitoring values of the influencing factors of the pavement structure health condition according to the set standards, evaluate the runway health status, generate a professional report including the PCN distribution map and the predicted life distribution map, etc., and save the report and the original monitoring data in the same monitoring directory; the dual-core architecture chip enables the industrial control computer 4 to use edge computing technology to realize real-time data preprocessing and transmission. By immediately processing the collected data, when an abnormal situation endangering flight safety is detected, relevant information is quickly pushed to the mobile devices of the maintenance team with a higher priority, ensuring that the airport management department can take actions in the first time to ensure the safe operation of the airport; the preprocessed data can be further analyzed in depth after being transmitted to the terminal. The industrial control computer 4 applies deep learning models such as convolutional neural networks and long short-term memory networks to build a prediction model for the health condition of the airfield pavement. Through learning the historical monitoring data, the system can identify subtle but critical change trends, give early warnings of possible structural damages, provide scientific and reasonable maintenance suggestions, extend the service life of the runway, and dynamically adjust the thresholds in the industrial control computer 4 according to the maintenance situation; when each pavement slab system is networked based on the local area network, the airport management department terminal numbers the prefabricated module 10. The wireless signal transmitter 6, based on the Beidou navigation system technology, combined with the local enhanced wireless sensor network, realizes the precise positioning of any faulty pavement slab in the airfield pavement of the airport, with an error of no more than ±0.5 meters, reducing the time for airport operation and maintenance personnel to find the faulty pavement slab and improving work efficiency. The location of the faulty pavement slab is displayed in the device networking system, and the pavement slab location is sent through the wireless signal transmitter 6.When the airport management department needs to detect the condition of the runway panel at night, it can input the number of the runway panel to be detected through a handheld device, which can guide the staff to quickly reach the corresponding position. The system is connected to the airport tower system, and the action route is guided by the tower, improving walking safety. The relative positions of multiple sensor units 1 enable airport operation and maintenance personnel to know the specific position of the fault point on the runway panel. The wireless signal transmitter 6 uses the LoRaWAN low-power wide-area network protocol as the wireless communication means, which not only reduces energy consumption but also enhances the coverage and anti-interference ability of the system. At the same time, all communication modules support over-the-air upgrade, facilitating later maintenance and technology update.

[0058] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. An airport runway health monitoring system, characterized in that: include: A signal demodulator, an integrated component, a piezoelectric unit and several sensor units; several of the sensor units are electrically connected to the signal demodulator via cables, the signal demodulator is electrically connected to the integrated component via cables, and the integrated component is electrically connected to the piezoelectric unit; the integrated component includes an integrated battery, an industrial computer, a storage unit and a wireless signal transmitter; the battery, the industrial computer, the storage unit and the wireless signal transmitter are electrically connected, and the battery is electrically connected to the piezoelectric unit.

2. The airport runway health status monitoring system according to claim 1 is characterized in that: The airport runway health status monitoring system is encapsulated by elastomeric polymer to obtain a prefabricated module, and the prefabricated module is placed between the pavement slab layer and the water-stable base layer of a newly built pavement or between the pavement slab layer and the pavement slab layer on the water-stable base layer of an already built pavement.

3. The airport runway health status monitoring system according to claim 2 is characterized in that: A plurality of the sensor units are respectively arranged at the board corners of the prefabricated modules.

4. An airport runway health status monitoring system according to any one of claims 1 to 3, characterized in that: The sensor module includes an optical fiber sensor, a displacement sensor, a pressure sensor, an acceleration sensor and a temperature and humidity sensor.

5. The airport runway health status monitoring system according to claim 4 is characterized in that: The displacement sensor, pressure sensor and acceleration sensor work based on the principle of positive piezoelectric effect.

6. An airport runway health status monitoring system according to any one of claims 1 to 3, characterized in that: The storage battery is a lithium iron battery.

7. An airport runway health status monitoring system according to any one of claims 1 to 3, characterized in that: The industrial computer adopts a single chip microcomputer of model STM32WL.

8. An airport runway health status monitoring system according to any one of claims 1 to 3, characterized in that: The wireless signal transmitter adopts an ultra-low power consumption broadband wake-up radio frequency transceiver.

9. The airport runway health status monitoring system according to claim 2, characterized in that: The piezoelectric unit adopts an ultrasonic generator and is placed at the plate corners and plate edges of the prefabricated module.

10. A method comprising the airport runway health status monitoring system according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Encapsulating the airport runway health monitoring system with an elastomeric polymer to obtain a prefabricated module, and installing the prefabricated module at a corresponding position of the runway panel; S2, the battery receives the electric energy generated by the piezoelectric unit based on the reverse effect of the piezoelectric material to power the system, and the sensor unit collects the stress, strain, acceleration, displacement, temperature and humidity changes and settlement information of the lower structure of the airport runway pavement; S3, the signal demodulator converts the collected information into corresponding values ​​and stores them in the storage unit. The condition machine processes the collected data immediately and monitors the health status of the airport runway in real time; S4. Number each prefabricated module and sensor unit, and network each system based on the local area network. Send the position of the prefabricated module through the wireless signal transmitter to achieve accurate positioning of the problematic runway panels in various areas of the airport runway.

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