Civil engineering structure health intelligent monitoring system based on WiFi signal

Abstract

The application provides a kind of civil engineering structure health intelligent monitoring system based on WiFi signal, belongs to detection system technical field, including structure state monitoring system, digital information processing and feedback system and algorithm adaptive updating system, based on the monitoring function of WiFi signal to structure, by terminal mobile receiving the real-time intensity information of WiFi base station, by terminal transmission to cloud analysis building structure health state information;By terminal analysis and combination monitoring position draw building structure cloud picture;Real-time update learning algorithm in combination with monitoring data;In combination with monitoring data, the health status of the structure is evaluated.The health intelligent monitoring system provided by the application is reasonable in design and feasible in use.Compared with the traditional structure health evaluation system, the visualization effect is enhanced, the monitoring efficiency is improved, the detection cost is reduced, and the application is suitable for popularization and use, and the intelligent degree is higher.The efficient and low-cost intelligent health status evaluation for building structure is realized.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of monitoring systems, and particularly relates to a civil engineering structure health intelligent monitoring system based on a WiFi signal. BACKGROUND

[0002] Structural health detection of building structures refers to continuous or periodic monitoring and evaluation of building structures or engineering structures to obtain information about their performance, state and safety during service, so as to timely discover and warn potential structural problems. It is of great significance to ensure the safety and reliability of various building structures during their life cycle and to ensure the normal operation of social infrastructure.

[0003] At present, intelligent long-term monitoring of the health state of building structures is less applied, and it is difficult to realize long-term health detection of a single building structure by using traditional monitoring and old evaluation systems at a high cost. It is urgent to establish a more suitable long-term monitoring structural operation and maintenance monitoring system for various building structures.

[0004] Summarizing the common problems of the current monitoring structural health monitoring system, the following deficiencies exist:

[0005] (1) High cost of single monitoring. At present, the monitoring instruments for building structures are expensive, and the purchase and maintenance cost of ultrasonic and radar equipment is high. Especially when high-precision detection or large-area building structures are required, the demand for equipment is higher.

[0006] (2) Complex instrument installation and layout. Especially some detection instruments need to be laid in advance, and the requirements are very high. During the layout process, the installation position, angle and environmental adaptability need to be accurately designed to ensure the accuracy and reliability of the monitoring data. Due to the complexity of the requirements, the layout work needs to be performed by personnel with rich professional knowledge, which is not conducive to the popularization and application of the monitoring method, and requires high demand for monitoring scheme design, line layout, channel installation system integration. If a non-destructive testing scheme is used, the system cost is extremely high, and long-term monitoring cannot be realized, which does not have economic implementation.

[0007] (3) Relies on manual operation, and the efficiency and accuracy are low. Since manual operation and interpretation of monitoring data highly depend on the experience and judgment of the operator, subjective errors are easily introduced, which may cause deviation in the judgment of the health condition of the building structure. Such deviation not only may affect the accuracy of the results, but also may adversely affect the safety assessment of the building structure, increasing the potential risk.

[0008] (4) The monitoring result visualization degree is low. At present, the monitoring result is often presented in the form of data or curve, and it is difficult for ordinary users to intuitively understand the information. Due to the lack of intuitive images or models, the result visualization degree is low, which makes the user more likely to misunderstand or ignore the potential risk when analyzing and evaluating, and then affects the accuracy and timeliness of monitoring.

[0009] (5) Poor universality. Various types of buildings are complex in construction, different in structure, and have high environmental impact. Traditional structure operation and maintenance monitoring system often only targets a certain type of structure building, or even only targets a single influencing factor, and is difficult to apply to other structures.

[0010] (6) Data processing is complex and time-consuming. The traditional structure operation and maintenance monitoring system needs to handle massive monitoring data, and the processing method is different for each type of monitoring data. The processing efficiency is slow, and it is difficult to meet the real-time demand of structure health evaluation.

[0011] Based on the above shortcomings and characteristics, in the field of building structure health evaluation, a new building structure operation and maintenance intelligent monitoring system is needed, which can solve the problems of low monitoring efficiency, high cost, poor universality, low visualization degree and low efficiency of traditional health monitoring system, and realize efficient, low-cost, highly visual and universal building structure operation and maintenance intelligent monitoring system. SUMMARY

[0012] The purpose of the present application is to provide a civil engineering structure health intelligent monitoring system based on WiFi signal, which includes three subsystems, namely structure state monitoring system, digital information processing feedback system and algorithm adaptive updating system.

[0013] The above-mentioned structure state detection system includes a signal emission system and a data acquisition system.

[0014] The above-mentioned digital information processing feedback system includes a data transmission system and a data processing system.

[0015] The above-mentioned algorithm adaptive updating system includes a data storage and management system and an algorithm intelligent updating system.

[0016] The above-mentioned signal emission system refers to the output system of WiFi model, which should have the function of emitting WiFi signal. In the operation and maintenance stage of the building, it is installed in the interior of the building or the surrounding environment. The specific form is in the form of fixed base station (such as router, etc.), which is installed in any fixed position in the interior of the building or the surrounding environment, and should be installed with high-power base station or multiple base stations. The building monitoring area should be completely covered by WiFi signal, that is, there is no signal blind area.

[0017] The data collection system is a WiFi signal receiving system in the form of a portable mobile terminal (such as a mobile phone) and is internally provided with a power module, a main control module, a WiFi network module, a WiFi signal analysis module, a communication module (such as a wireless communication module and a Bluetooth communication module), an intelligent positioning module (such as an image processing module, a GPS positioning module, and a Bluetooth / WiFi auxiliary positioning module), and a display module.

[0018] The data collection system has an indoor positioning function and can move around inside and outside a part of a building to receive WiFi signals and extract at least WiFi signal strength, wavelength, and frequency information. The system can record WiFi data information measured at different spatial positions and has data transmission and reception functions to receive or transmit collected data information.

[0019] The data transmission system includes two parts, which are respectively arranged in the data collection system and the data processing system. The system can transmit and receive information data between the data collection system and the data processing system to realize efficient recycling of data.

[0020] The data processing system is provided with a power module, a main control module, a network module, a communication module, a data analysis processing module, and a drawing module.

[0021] The data processing system is mainly in the form of a fixed terminal (such as a personal computer). After receiving data transmitted by the data collection system through the data transmission system, the system calculates the health status information of each structure of the building by using a pre-built WiFi health evaluation algorithm, scores each structure of the building, and draws a two-dimensional / three-dimensional building structure health degree analysis cloud map by using the drawing module to visually display the health degree of each structure of the building. The cloud map is displayed on the terminal or transmitted to the data collection system for display.

[0022] After processing data, the data processing system organizes and receives data transmitted by the collection system, transmits and stores the data to a data storage and management system.

[0023] After discovering a hidden danger in a structure, the data processing system generates hidden danger information immediately and displays it on the terminal and the mobile terminal.

[0024] The visualization refers to a digital processing feedback system that draws a building structure based on the moving position of a signal receiver and marks the concrete strength of each position of the building structure in the form of color marking to display the building structure strength to the user terminal in two-dimensional or three-dimensional mode.

[0025] The above data storage and management system exists in a cloud manner, and includes (1) a WiFi strength, wavelength, frequency, and the like information and a pre-learning library of the relationship between the health state of the building structure; and (2) internal collection and processing data of each building structure. The data is stored and transmitted to an algorithm intelligent updating system according to the type of the building structure (such as a bridge, a tunnel, and a building).

[0026] The above algorithm intelligent updating system, which is simultaneously based on the cloud as the data storage and management system, can store all collected information data, store the data according to the type of the structure, and update the pre-learning library of the relationship between the health state of the building structure of the data storage and management system according to different types of structures, and further update the algorithm according to different types of building structures, so as to make the algorithm better adapt to different types of structures and improve the calculation accuracy.

[0027] The above algorithm intelligent updating system automatically downloads and transmits the updated algorithm to the data processing system in real time through the network, updates the pre-built-in algorithm of the data processing system, and realizes real-time intelligent updating of the algorithm.

[0028] The above structure operation and maintenance intelligent monitoring system can be supported in multiple systems.

[0029] The above building structure visualization module is based on a mainstream visualization graphics engine, uses mainstream development systems such as JAVA and Python, and the running environment includes Windows, Android, and ios systems.

[0030] The above data processing system can provide a convenient information inquiry system for users, can inquire historical information of the structure operation and maintenance intelligent monitoring system, use a previous version of the algorithm, and can query monitoring information in real time.

[0031] The above structure operation and maintenance intelligent detection system develops an APP program on a mobile terminal, and can be integrally loaded on a data receiving system to realize browsing of a three-dimensional model of the building structure and a structure safety state, local magnification detail display, rotation and translation transformation, display and hiding of part of the building, and the like.

[0032] The above intelligent algorithm is based on artificial intelligence algorithms and monitoring data, and can realize real-time analysis and prediction of the structure safety state of the building structure.

[0033] The development of the above systems includes a digital information model environment interface, which is developed by using a programming language such as Python, and can give monitoring data collection and analysis, and adjust the operation period of the data processing system.

[0034] The above health state evaluation is based on a health state evaluation system of each building structure.

[0035] The health state evaluation system is based on the performance of the building structure, adopts expert scoring evaluation to score the performance indexes of each component of the building structure, adopts weighted average to evaluate the health and safety state of each component in percentage, and grades each score area.

[0036] The health state evaluation system is based on the monitoring data and data processing system to calculate the information of the building structure, and gives the component rating and score.

[0037] Compared with the prior art, the beneficial effects of the present application mainly include:

[0038] 1. The structure operation and maintenance intelligent monitoring system based on WiFi signals provided by the present application is safe, stable, durable, low in cost, and realizes health state evaluation of the building structure.

[0039] 2. The structure operation and maintenance intelligent monitoring system based on WiFi signals can utilize the existing WiFi equipment in the building structure, is controllable in cost, can be widely applied, and is higher in monitoring efficiency.

[0040] 3. The structure operation and maintenance intelligent monitoring system based on WiFi signals can deploy base stations according to different building structures, and is stronger in universality.

[0041] 4. The structure operation and maintenance intelligent monitoring system based on WiFi signals can update intelligent algorithms according to the building structure, realizes long-term health detection, is strong in pertinence, and is relatively improved in detection accuracy.

[0042] 5. The structure operation and maintenance intelligent monitoring system based on WiFi signals realizes the structure state evaluation system of the building structure based on detection data, and can further develop the digital twin state evaluation function. DETAILED DESCRIPTION

[0043] Figure 1 It is a principle schematic diagram of the civil engineering structure health intelligent monitoring system based on WiFi signals. DETAILED DESCRIPTION

[0044] The civil engineering structure health intelligent monitoring system based on WiFi signals will be described in more detail below with reference to the schematic diagram, wherein the preferred embodiment of the present application is represented, and it should be understood that the present application described herein can be modified by those skilled in the art, and the advantageous effects of the present application can still be achieved, therefore, the following description should be understood as extensive knowledge for those skilled in the art, and not as a limitation of the present application.

[0045] As Figure 1As shown, a WiFi signal-based civil engineering structure health intelligent monitoring system includes the following steps:

[0046] Step one:

[0047] At any stage after the completion of the structure, the structure state detection system 1 is built, and the plan or three-dimensional space diagram of the building is drawn. Thereafter, the signal emitting system 4 is arranged at any location inside or outside the building, which should have the function of emitting signals with fixed frequency, and the signals can cover the WiFi base station of the whole building, and should continuously emit signals and mark the location in the diagram.

[0048] Step two:

[0049] The data collection system 5 is developed to have the functions of positioning and signal receiving, and the portable mobile terminal device can collect and store the required information of the signals in the building for a long time, and has the functions of interaction and display, and can execute the commands of the user and show the required information to the user.

[0050] Step three

[0051] The algorithm adaptive updating system 3 is developed, which is a cloud server, and stores a large amount of WiFi signal information of different buildings and concrete strength and internal structure information collected, and one-to-one correspondence. Machine learning algorithm is used to compare and fuse the relationship between the two, and form a training algorithm. It has the function of transmitting the algorithm to the remote personal computer.

[0052] Step four

[0053] The data transmission system 6 is developed in the digital information processing feedback system 2, that is, a program is developed on the personal computer, which can receive the algorithm from the cloud server and receive the data information from the mobile terminal, and the data processing system 7 is used to calculate and obtain the building strength information corresponding to the above data information under the above algorithm.

[0054] Step five

[0055] The data processing system 7 is developed to have the function of image drawing, obtain the data in step four, and draw the internal structure diagram of reinforced concrete and the strength cloud diagram of reinforced concrete on the basis of the data, which is a visual and intuitive display of the calculation data.

[0056] Step six

[0057] The algorithm intelligent updating system 9 is developed, which can further collect and store all the data transmitted to the server according to the data obtained in the data storage and management system 8, automatically calculate, and continue to learn and update the trained algorithm in step three.

[0058] After the above development, enter the information acquisition stage.

[0059] Step seven

[0060] Turn on and run the structure state detection system 1 for a long time, and perfect the signal transmission system 4, so that the building is completely covered by WiFi signal.

[0061] Step eight

[0062] Users use the portable mobile terminal of the data acquisition system 5 inside and outside the building to collect signal information transmitted by the signal transmission system 4 at each position for a long time, and store and transmit the information to the data transmission system 6, and transmit to the data processing system 7 regularly.

[0063] Step nine

[0064] The personal computer of the data processing system 7 has received the algorithm transmitted by the data storage and management system 8 cloud server in advance, and regularly receives the building signal data transmitted by the data transmission system 6, obtains the data by algorithm operation, analyzes and calculates the building reinforced concrete strength information obtained by collecting the signal of the building. And after visualizing the result in step five, it is transmitted to the data transmission system 6 and the data storage and management system 8 respectively.

[0065] Step ten

[0066] After receiving the information of the data processing system 7 in step nine, the data storage and management system stores the data in the cloud server, and regularly transmits it to the algorithm intelligent updating system 9 by the data storage and management system 8, updates the algorithm by combining the transmission data, customizes and generates the health monitoring algorithm of the building, and updates and transmits the algorithm to the data processing system 7.

[0067] Step eleven

[0068] After receiving the visualization result transmitted by the data processing system 7 in step nine, the data transmission system 6 visualizes and displays the measured structure strength diagram and distribution diagram on the mobile terminal of the data acquisition system 5, and this diagram and its data are the results obtained by this monitoring.

[0069] Step twelve

[0070] Repeat steps eight to eleven to achieve high accuracy, low cost, and high efficiency of long-term reinforced concrete strength and steel distribution detection for the same building, greatly improve the detection efficiency, and realize real-time detection and visual feedback function.

[0071] The above merely describes the preferred embodiments of the present application and does not limit the present application in any way. Any person skilled in the art can make any form of equivalent replacement or modification to the technical solutions and technical contents disclosed by the present application without departing from the scope of the technical solutions of the present application, and such changes still belong to the protection scope of the present application.

Claims

1. A WiFi signal based intelligent monitoring system for health of civil engineering structures, characterized in that, The system comprises a structural state monitoring system, a digital information processing feedback system and an algorithm adaptive updating system. The structural state monitoring system comprises a signal transmitting system and a data acquisition system, the signal transmitting system is used to establish a WiFi signal coverage area, and the data acquisition system is connected with the signal transmitting system for positioning and collecting WiFi data information in the WiFi signal coverage area. The digital information processing feedback system comprises a data transmission system and a data processing system, the data transmission system is connected with the data acquisition system and the data processing system for mutual information transmission and reception, the data processing system draws a two-dimensional / three-dimensional building structure health degree analysis cloud map based on the collected WiFi data information through a preset algorithm and a drawing module, and transmits the cloud map to a terminal of the data acquisition system and a data storage management system for display and storage. The algorithm adaptive updating system comprises a data storage management system and an algorithm intelligent updating system, the data storage management system receives data transmitted by the data processing system, classifies and manages the data, and transmits the data to the algorithm intelligent updating system after completion, the algorithm intelligent updating system updates the algorithm according to different types of data, and transmits the updated algorithm to the data processing system to update the preset algorithm, so that the algorithm is updated intelligently in real time. The signal transmitting system is in the form of a fixed base station, which is installed at any fixed position in the interior or surrounding environment of the building structure during the operation and maintenance stage of the building structure, so that the monitoring area of the building structure is completely covered by the WiFi signal. The data storage management system specifically comprises a WiFi strength, wavelength and frequency information and building structure health state relationship pre-learning library, internal collection and processing data of each building structure, and according to the type of the building structure, the data is stored and transmitted to the algorithm intelligent updating system. The data processing system is in the form of a fixed edge, which comprises a power module, a main control module, a network module, a communication module, a data analysis processing module and a drawing module. After receiving the data transmitted by the data acquisition system, the data processing system calculates the health state information of the structure of the building structure at each position through the WiFi health evaluation algorithm built in the data analysis module, scores the structure of the building structure at each position, draws a two-dimensional / three-dimensional building structure health degree analysis cloud map through the drawing module, displays the drawn cloud map on the edge or transmits the cloud map to the data acquisition system for display, and finally arranges the visualized data and the data transmitted by the collection system, transmits and stores the data to the data storage and management system after completing the data processing. The algorithm intelligent updating system stores the received data according to the structure type, updates the building structure health state relationship pre-learning library of the data storage management system according to different types of structures, and further updates the algorithm according to different types of building structures, so that the algorithm can better adapt to different types of structures and improve the calculation accuracy.

2. The WiFi signal based civil engineering structure health intelligent monitoring system according to claim 1, wherein, The data acquisition system is in the form of a portable mobile terminal, and is internally provided with a power module, a main control module, a WiFi network module, a WiFi signal analysis module, a communication module, an intelligent positioning module and a display module.

3. The WiFi signal based civil engineering structure health intelligent monitoring system according to claim 2, wherein, The communication module comprises a wireless communication module and a Bluetooth communication module, and the intelligent positioning module comprises an image processing module, a GPS positioning module and a Bluetooth / WiFi auxiliary positioning module. 4.The WiFi signal based civil engineering structure health intelligent monitoring system according to claim 1, wherein, The visualization is specifically that a digital information processing feedback system draws a building structure based on the mobile position of the portable mobile terminal, labels the concrete strength of each position of the building structure, and displays the building structure strength in a two-dimensional or three-dimensional manner on the edge end of the body or the mobile terminal. 5.The WiFi signal based civil engineering structure health intelligent monitoring system according to claim 1, wherein, The calculation of the health state information is based on a health state evaluation system of each building, and the health state evaluation system performs computer online evaluation on the structure state of the building based on monitoring data, i.e. the calculation information of the data processing system. Specifically, first, an expert scoring evaluation method is used to score each performance index of each component of the building, then a weighted average method is used to evaluate the health and safety state of each component in a percentage system, and each score area is rated, and finally, the overall health state of the building is evaluated based on the scores of all components.

6. The WiFi signal based civil engineering structure health intelligent monitoring system according to claim 1, wherein, The terminal is developed with an APP, and is integrally loaded with the data acquisition system. Through the APP of the terminal, the three-dimensional model and the structure safety condition of the building are browsed, the local method details of the model are displayed, rotation and translation exchange are realized, and the functions of displaying and hiding part of the components are realized.

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