CN111142485A - Construction site monitoring system and method based on two-dimensional code and Internet of things - Google Patents
Construction site monitoring system and method based on two-dimensional code and Internet of things Download PDFInfo
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Abstract
The utility model discloses a construction site monitoring system and a method based on two-dimension codes and the Internet of things.A plurality of mechanical intelligent terminals are arranged on corresponding mechanical equipment, and each mechanical equipment is also pasted with a corresponding two-dimension code; each mechanical intelligent terminal is used for acquiring data of various sensors installed on the mechanical equipment; the system is also used for collecting the real-time position and the construction route of the mechanical equipment; the acquired data are uploaded to an Internet of things data center cloud platform; each mechanical intelligent terminal is further used for obtaining a construction task from the Internet of things data center cloud platform and displaying the construction plan in the construction task to an operator of the mechanical equipment through the navigation display screen.
Description
Technical Field
The disclosure relates to the technical field of construction site monitoring, in particular to a construction site monitoring system and method based on two-dimensional codes and the Internet of things.
Background
The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
In the course of implementing the present disclosure, the inventors found that the following technical problems exist in the prior art:
at present, China is in the peak period of infrastructure, a large number of dams, airports, roads and the like are to be built in the future, and the method has the characteristics of large scale of infrastructure engineering, tight requirement on construction period, high quality requirement, multiple construction links and tight cost control, and is applied to the traditional construction process: the mechanical construction plan is an artificial marking; the quality control comprises manual side station supervision and data loss; the error is large and the progress is slow in a sampling detection mode; according to the traditional drawing report, the informatization degree of the engineering management mode is low; the problems of engineering construction quality, construction progress control and safety are particularly outstanding, and engineering construction units have urgent requirements on high-quality and high-efficiency construction informatization means.
Disclosure of Invention
In order to overcome the defects of the prior art, the construction site monitoring system and method based on the two-dimensional codes and the Internet of things are provided;
in a first aspect, the disclosure also provides a construction site monitoring system based on the two-dimensional code and the internet of things;
job site monitored control system based on two-dimensional code and thing networking includes:
each mechanical intelligent terminal is installed on corresponding mechanical equipment, and a corresponding two-dimensional code is pasted on each mechanical equipment; each mechanical intelligent terminal is used for acquiring data of various sensors installed on the mechanical equipment; the system is also used for collecting the real-time position and the construction route of the mechanical equipment; the acquired data are uploaded to an Internet of things data center cloud platform; each mechanical intelligent terminal is further used for obtaining a construction task from the Internet of things data center cloud platform and displaying the construction plan in the construction task to an operator of the mechanical equipment through the navigation display screen.
In a second aspect, the disclosure provides a construction site monitoring method based on a two-dimensional code and the internet of things;
a construction site monitoring method based on two-dimensional codes and the Internet of things comprises the following steps:
generating a two-dimensional code belonging to each mechanical device on the basis of the unique number of each mechanical device in the construction site; attaching the two-dimensional code to corresponding mechanical equipment;
various sensors of each mechanical device acquire the construction data of the mechanical device and upload the acquired construction data of the mechanical device to a mechanical intelligent terminal in real time;
after integrating the collected construction data of the mechanical equipment, the mechanical intelligent terminal attaches a unique serial number of the mechanical intelligent terminal and then compresses the data; uploading the compressed data to a router of a data center in real time;
the router of the data center stores the data, and then uploads the updated construction progress to an office area server through a local area network; and meanwhile, the updated construction progress is uploaded to an internet cloud platform through the internet.
Compared with the prior art, the beneficial effect of this disclosure is:
the whole construction process is digitalized, informationized and Internet of things, the whole life cycle is controlled under an intelligent control system, digital construction is carried out in the time-space field construction process, and the Internet of things data center cloud platform based on the BIM + GIS spatial information big data intelligent analysis technology is constructed. The cloud platform is characterized by multi-source data fusion, compatibility with BIM data GIS space visualization and digital construction realization. When large-scale infrastructure is built, corresponding digital mirror image construction is carried out, the engineering quality is ensured, and the engineering efficiency is improved. The construction state and the construction progress of each engineering machine can be recorded and displayed on the data center cloud platform of the Internet of things.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a system framework diagram of a first embodiment;
fig. 2 is a schematic diagram of an internal electrical connection relationship of the smart mechanical terminal according to the first embodiment of the present application.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The embodiment I provides a construction site monitoring system based on two-dimensional codes and the Internet of things;
as shown in fig. 1, a job site monitoring system based on two-dimensional code and internet of things includes:
each mechanical intelligent terminal is installed on corresponding mechanical equipment, and a corresponding two-dimensional code is pasted on each mechanical equipment; each mechanical intelligent terminal is used for acquiring data of various sensors installed on the mechanical equipment; the system is also used for collecting the real-time position and the construction route of the mechanical equipment; the acquired data are uploaded to an Internet of things data center cloud platform; each mechanical intelligent terminal is further used for obtaining a construction task from the Internet of things data center cloud platform and displaying the construction plan in the construction task to an operator of the mechanical equipment through the navigation display screen.
As one or more embodiments, the system further comprises: an Internet of things data center cloud platform;
the data center includes: the router is respectively connected with the database server, the backup memory, the application server and the firewall;
the router is used for network interconnection, supports various local area network and wide area network interfaces, and is used for interconnecting the local area network and the wide area network to realize communication among different networks; the router is also used for data processing, and provides functions including packet filtering, packet forwarding, priority, multiplexing, encryption, compression, firewall and the like; the router is also used for network management, and provides functions including configuration management, performance management, fault tolerance management, and flow control.
The database server is used for providing storage and query services for data on various construction equipment and platforms and providing data support for the whole system.
The backup memory is used for backing up data in the data server and providing safety guarantee for the data.
The application server is used for operating a platform webservice, a front-end page and a data receiving program; the system provides a basic environment for the operation of the platform, processes various received and transmitted data, and is also a bridge for connecting various terminals with a database.
The firewall is used for protecting the internal network from being invaded by illegal users, and consists of 4 parts, namely a service access rule, an authentication tool, a packet filter and an application gateway, wherein the firewall is software or hardware positioned between a computer and a network connected with the computer, and all network communication and data packets flowing into and out of the computer pass through the firewall.
As one or more embodiments, the system further comprises: a project office data center;
the project office data center includes: the system comprises a local area network, an office area server and an office area display screen;
the local area network is used for connecting the office area server and the Internet of things data center cloud platform;
the office area server is used for uploading construction drawings, construction areas, construction requirements and technological requirements designed by research and development personnel to a data center, meanwhile, construction navigation routes aiming at the current construction machinery are uploaded, and the construction personnel conduct construction according to guidance of a navigation display screen.
The office area display screen is used for playing and monitoring the state and progress of the whole project all the time, and a manager can conveniently monitor the whole project.
As one or more embodiments, the system further comprises: an Internet zone;
the internet zone includes: the system comprises the Internet, a user mobile terminal and a user PC terminal;
and the Internet checks construction data, construction planning, construction process and engineering quality report by logging in the Internet.
The user mobile terminal and the user PC terminal: the system is used for a monitor and an owner to log in the Internet, allows a mobile phone or a professional engineering management communication device, and realizes the dispatching of various machines at a mobile terminal and the checking of the construction progress, efficiency and quality of workers or machines.
As one or more embodiments, as shown in fig. 2, the mechanical smart terminal includes: a central processing unit;
the central processing unit is communicated with a router of the data center through a wireless network; acquiring a construction task issued by a data center;
the central processing unit is connected with the high-precision positioning system, various sensors and the navigation display screen;
the central processor is connected with the construction machinery equipment controller through a construction machinery control bus, mutually transmits data with the construction machinery equipment controller, and commands the construction machinery equipment to complete construction actions through the construction machinery equipment controller;
the central processing unit is used for collecting, operating and processing data of various sensors; the cloud platform is packaged and sent to the Internet of things cloud platform in a 4G or wifi communication mode;
the high-precision positioning system adopts RTK satellite positioning and is used for sensing the position and the speed of the machine in real time; the positioning of the mechanical position is realized by adopting double antennas, and the drawing of a mechanical vector graph is realized;
an RTK (Real-time kinematic) carrier phase differential technology is a differential method for processing carrier phase observed quantities of two measuring stations in Real time, and the carrier phase acquired by a reference station is sent to a user receiver for difference solving. The method is a new common satellite positioning measurement method, the former static, rapid static and dynamic measurements all need to be solved afterwards to obtain centimeter-level accuracy, the RTK is a measurement method capable of obtaining centimeter-level positioning accuracy in real time in the field, a carrier phase dynamic real-time difference method is adopted, the method is a major milestone applied to GPS, the appearance of the method is project lofting and terrain mapping, various control measurements bring new measurement principles and methods, and the operation efficiency is greatly improved.
RTK is a real-time dynamic differential measurement whose principle is: the base station uses a fixed coordinate as reference, then the base station compares the coordinate with the fixed coordinate to obtain the difference value every time the base station calculates a coordinate by receiving the satellite, then the difference value is sent to the mobile station, and the mobile station uses the coordinate received by the satellite to subtract the difference value sent by the base station to obtain the corrected coordinate.
The beneficial effects of the above technical scheme are: the double antennas are adopted to realize the positioning of the mechanical position and the drawing of a mechanical vector graph so as to clearly distinguish the head and the tail of the machine, and the machine is not like a traditional positioning system, only can be displayed as a round point and cannot know the accurate working state of the machine.
The various types of sensors include: the device comprises a coding sensor, an inclination angle sensor, a proximity switch, a current sensor and a pressure sensor;
the sensors are used for coding the angle of the sensor for sensing the operation of the mechanical structure, and have different installation positions and different functions. For example: the device is arranged on a grinding wheel shaft and can detect the turning angle of the grinding wheel; the state of each arm can be displayed when the excavator is installed on the arm of the excavator. An inclination angle sensor: showing the state of the machine in three-dimensional space and the vibration frequency condition. A proximity switch: the ram lifting height of a dynamic compactor, for example, can be detected. A current sensor: the running state of the motor can be detected, the force generated by the motor is presumed, and the state of the foundation is judged; a pressure sensor: it is possible to determine when to apply force to the object.
The navigation display screen is used for receiving construction tasks distributed by project office areas and guiding workers to construct, such as tamping points, rolling strips, pile base points and the like.
The second embodiment provides a construction site monitoring method based on two-dimensional codes and the Internet of things;
a construction site monitoring method based on two-dimensional codes and the Internet of things comprises the following steps:
s1: generating a two-dimensional code belonging to each mechanical device on the basis of the unique number of each mechanical device in the construction site; attaching the two-dimensional code to corresponding mechanical equipment;
s2: various sensors of each mechanical device acquire the construction data of the mechanical device and upload the acquired construction data of the mechanical device to a mechanical intelligent terminal in real time;
s3: after integrating the collected construction data of the mechanical equipment, the mechanical intelligent terminal attaches a unique serial number of the mechanical intelligent terminal and then compresses the data; uploading the compressed data to a router of a data center in real time;
s4: the router of the data center stores the data, and then uploads the updated construction progress to an office area server through a local area network; and meanwhile, the updated construction progress is uploaded to an internet cloud platform through the internet.
As one or more embodiments, after S2 and before S3, the method further includes:
the mechanical intelligent terminal filters invalid data and detects alarm data of all the acquired sensor data, and the invalid data and the detected alarm data are displayed to a mechanical operator through a navigation display screen according to the detected alarm data so as to avoid illegal operation.
As one or more embodiments, in S3, uploading the compressed data to a router of the data center in real time, and packing the filtered data in real time at a frequency of 1HZ through WIFI or 4G and sending the packed data to the router.
It should be understood that the filtered data includes: high precision positioning, height, depth, trajectory, force or number of workings.
As one or more embodiments, the method further comprises:
s5: the office area server receives the newly planned construction route, transmits the newly planned construction route to the router through the local area network, the router transmits the newly planned construction route to the mechanical intelligent terminal through the wireless network, and the mechanical intelligent terminal displays the newly planned construction route to an operator of the mechanical equipment through the corresponding navigation display screen.
Further, the office area server receives the newly planned construction route, and transmits the newly planned construction route to the router through the local area network, and the method specifically includes:
and the office area server receives the CAD drawing containing the newly planned construction route, converts the drawing coordinates in the CAD drawing into the coordinate values of the construction site, and transmits the construction route drawing expressing the coordinate values of the construction site to the router through the local area network.
Further, the office area server transmits the type of construction machinery equipment, the construction vibration frequency of the construction machinery equipment, the construction area of the construction machinery equipment, the weight of a rammer of a dynamic compactor, the lifting height of the rammer, the distance between ramming points, the number of times of the rammer, the construction sequence of the construction machinery equipment and the like to the router in addition to the transmission of the construction route.
As one or more embodiments, the method further comprises:
and the office area server analyzes the acquired data in real time according to the position of each construction machine, time, elevation, construction units and construction process, counts weak areas, and realizes early warning and troubleshooting of hidden danger or substandard operation.
As one or more embodiments, the method further comprises:
s6: a user mobile terminal scans a two-dimensional code of a certain mechanical device in a field construction area; analyzing the unique identifier of the mechanical equipment corresponding to the two-dimensional code; and calling corresponding construction progress data from a first database server of the data center according to the unique identifier obtained by analysis, and feeding the called construction progress data back to the user mobile terminal for display.
Every machinery on building site all posts exclusive two-dimensional code, through with cell-phone, Pad scanning two-dimensional code, everybody can all look over progress and the construction state of this machinery to the cloud platform to and whether construction quality is qualified.
The person with the authority can command the on-site mechanical construction by logging in the account password.
The construction area and the construction requirements (such as rolling times, vibration frequency, lap joint width, working area and the like sent by a rolling machine) set on the cloud platform can be set and planned for the construction navigation of the construction machine, and constructors can construct according to the guidance of the navigation screen.
The implementation of the whole project requires three working areas to cooperate: the system comprises a mechanical construction site (mechanical intelligent terminal), a project office area and an Internet of things data center.
One, machinery job site (machinery intelligent terminal)
Each construction machine is provided with a mechanical intelligent terminal, and the mechanical intelligent terminal is provided with a high-precision position location, abundant sensor communication interfaces and a high-speed transmission mechanical bus interface and is in communication with the construction machines at any time. And the mechanical intelligent terminal can be connected with a navigation screen to assist the construction of the manipulator. The mechanical intelligent terminal fuses and calculates the acquired state data of the high-precision RTK satellite positioning, various sensors (an acceleration sensor, an encoder, a drop hammer sensor, a three-axis tilt sensor, a gyroscope, a depth sensor and the like) and the operation data of large-scale construction machinery, and the RTK satellite positioning, a laser radar, 4G wireless communication, an electronic map and a hydraulic electric control technology are fused, innovated and researched to develop an accurate intelligent construction technology, so that accurate construction navigation of engineering machinery can be realized. And sending the data to the Internet of things data center cloud platform in a WiFi, 4G and Ethernet communication mode.
And modular development is adopted, and different functional modules correspond to different sensor data. And when the system is started, the automatic updating function is realized by judging the file version under the appointed path. After the initialization of the variables is completed, the corresponding modules are sequentially started. The different modules are divided into two types, one is a data reading type of the sensor, and the other is a data processing type. And finally, the software function is realized by calling different module data through the data processing module. In order to ensure the normal operation of the automatic updating function of the software, the automatic updating function is independently packaged into a corresponding subprogram file, and only the subprogram file needs to be called when the automatic updating is carried out.
And a central processing unit of the mechanical intelligent terminal acquires design data from the cloud platform of the data center of the Internet of things to the local. And adopting a TCP/IP protocol, connecting the TCP/IP protocol to a server in a client-side mode, and calling a slot function for acquiring the task after receiving the semaphore signal. The corresponding data bits are processed by parsing the returned data. And then returning the task receiving result to the Internet of things data center cloud platform, and simultaneously returning the task receiving result and the task data to the office area server.
The inclination angle detection sensor, the length detection sensor and the current detection sensor adopt the same processing flow to read and process data. The sensor opens a corresponding hardware data interface, after receiving the data volume call sent by the GNSS detection module, the sensor starts to read corresponding hardware interface data, and only after valid data meeting the data rule are read, the corresponding variable data are updated. If invalid data is read, a state of continuing to wait for a call is entered.
And the mechanical intelligent terminal performs data interaction with navigation display screen software. And after receiving the operation instruction of the navigation display screen, performing data operation, processing the data, transmitting the processed data to the navigation display screen in real time, and displaying the data by the navigation display screen. The system interaction of the system comprises two data interfaces. Firstly, data in the construction process are sent to the Internet of things data center cloud platform through a wireless network, and secondly, the data are sent to a navigation display screen (a tablet, a mobile phone, a vehicle-mounted screen and the like) through a TCP.
Second, thing networking data center cloud platform
The cloud platform of the data center of the Internet of things is characterized by multi-source data fusion, compatibility with BIM data GIS space visualization and digital construction realization. When large-scale infrastructure is built, corresponding digital mirror image construction is carried out, the engineering quality is ensured, and the engineering efficiency is improved. The construction state and the construction progress of each engineering machine can be recorded and displayed on the data center cloud platform of the Internet of things. Meanwhile, the monitoring of each construction area can upload the real-time monitoring video to the cloud platform of the data center of the Internet of things.
Thirdly, project office area:
construction design drawing: and uploading the interface data, the construction process data, the pile point design data, the bin surface design data and the like to the cloud platform of the data center of the Internet of things. Each construction machine has a unique number, and a project manager can dispatch tasks such as construction areas, construction specifications and the like to each machine. The navigation screen installed on the machine can directly receive tasks sent by the project office through 4G or WIFI.
That is to say, some plans in the project office area and sends to thing networking data center cloud platform, also sends to navigation display screen and mechanical intelligent terminal. Meanwhile, data acquired by the mechanical intelligent terminal are sent to a navigation display screen through a data line, and the navigation display screen can display the construction process in real time; and data can be uploaded to the Internet of things data center cloud platform through WIFI and 4G. Through the mode, the communication is realized, and the engineering digital management of the Internet of things technology is realized. Every machinery on building site all posts exclusive two-dimensional code, through with cell-phone, Pad scanning two-dimensional code, everybody can all look over progress and the construction state of this machinery to the cloud platform to and whether construction quality is qualified.
The information system of the construction industry is considered from the comprehensive solution, and is an engineering information solution provider. The engineering quality is improved, the engineering efficiency is improved, the engineering cost is reduced, innovative technology is used for serving the engineering construction industry, and the value is created for the society and the country.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. Job site monitored control system based on two-dimensional code and thing networking, characterized by includes:
each mechanical intelligent terminal is installed on corresponding mechanical equipment, and a corresponding two-dimensional code is pasted on each mechanical equipment; each mechanical intelligent terminal is used for acquiring data of various sensors installed on the mechanical equipment; the system is also used for collecting the real-time position and the construction route of the mechanical equipment; the acquired data are uploaded to an Internet of things data center cloud platform; each mechanical intelligent terminal is further used for obtaining a construction task from the Internet of things data center cloud platform and displaying the construction plan in the construction task to an operator of the mechanical equipment through the navigation display screen.
2. The system of claim 1, wherein the mechanical smart terminal comprises: a central processing unit;
the central processing unit is communicated with a router of the data center through a wireless network; acquiring a construction task issued by a data center;
the central processing unit is connected with the high-precision positioning system, various sensors and the navigation display screen;
the central processor is connected with the construction machinery equipment controller through a construction machinery control bus, mutually transmits data with the construction machinery equipment controller, and commands the construction machinery equipment to complete construction actions through the construction machinery equipment controller;
the central processing unit is used for collecting, operating and processing data of various sensors; the cloud platform is packaged and sent to the Internet of things cloud platform in a 4G or wifi communication mode;
the high-precision positioning system adopts RTK satellite positioning and is used for sensing the position and the speed of the machine in real time; the positioning of the mechanical position is realized by adopting double antennas, and the drawing of a mechanical vector graph is realized;
the various types of sensors include: the device comprises a coding sensor, an inclination angle sensor, a proximity switch, a current sensor and a pressure sensor;
the sensors are used for coding the angle of the sensor for sensing the operation of the mechanical structure, and have different installation positions and different functions; the device is arranged on a grinding wheel shaft and can detect the turning angle of the grinding wheel; the state of each arm can be displayed when the excavator is arranged on the arm of the excavator; an inclination angle sensor: showing the state of the machine in a three-dimensional space and the vibration frequency condition; a proximity switch: detecting the lifting height of a rammer of a dynamic compaction machine; a current sensor: detecting the running state of the motor, deducing the force generated by the motor, and judging the state of the foundation; a pressure sensor: determining when to apply a force to an object;
and the navigation display screen is used for receiving the construction tasks distributed by the project office area and guiding workers to construct.
3. A construction site monitoring method based on two-dimensional codes and the Internet of things is characterized by comprising the following steps:
generating a two-dimensional code belonging to each mechanical device on the basis of the unique number of each mechanical device in the construction site; attaching the two-dimensional code to corresponding mechanical equipment;
various sensors of each mechanical device acquire the construction data of the mechanical device and upload the acquired construction data of the mechanical device to a mechanical intelligent terminal in real time;
after integrating the collected construction data of the mechanical equipment, the mechanical intelligent terminal attaches a unique serial number of the mechanical intelligent terminal and then compresses the data; uploading the compressed data to a router of a data center in real time;
the router of the data center stores the data, and then uploads the updated construction progress to an office area server through a local area network; and meanwhile, the updated construction progress is uploaded to an internet cloud platform through the internet.
4. The method as claimed in claim 3, wherein the sensors of each mechanical device collect the construction data of the mechanical device, and after the collected construction data of the mechanical device is uploaded to the mechanical intelligent terminal in real time, the mechanical intelligent terminal integrates the collected construction data of the mechanical device, attaches the unique serial number of the mechanical intelligent terminal, and then compresses the data; before uploading the compressed data to a router of a data center in real time, the method further comprises the following steps:
the mechanical intelligent terminal filters invalid data and detects alarm data of all the acquired sensor data, and the invalid data and the detected alarm data are displayed to a mechanical operator through a navigation display screen according to the detected alarm data so as to avoid illegal operation.
5. The method as claimed in claim 3, wherein the real-time uploading of the compressed data to the router of the data center is to pack the filtered data in real time at a frequency of 1HZ through WIFI or 4G and send the packed data to the router; the filtered data comprises: high precision positioning, height, depth, trajectory, force or number of workings.
6. The method of claim 3, further comprising:
the office area server receives the newly planned construction route, transmits the newly planned construction route to the router through the local area network, the router transmits the newly planned construction route to the mechanical intelligent terminal through the wireless network, and the mechanical intelligent terminal displays the newly planned construction route to an operator of the mechanical equipment through the corresponding navigation display screen.
7. The method as claimed in claim 3, wherein the office server receives the newly planned construction route and transmits the newly planned construction route to the router through the local area network, specifically comprising:
and the office area server receives the CAD drawing containing the newly planned construction route, converts the drawing coordinates in the CAD drawing into the coordinate values of the construction site, and transmits the construction route drawing expressing the coordinate values of the construction site to the router through the local area network.
8. The method of claim 3, wherein the office area server transmits to the router, in addition to the transmission of the construction route, a construction machinery equipment type, a construction vibration frequency of the construction machinery equipment, a construction machinery equipment construction area, a rammer weight of the dynamic compactor, a rammer lifting height, a ramming point interval, a rammer number, a construction order of the construction machinery equipment.
9. The method of claim 3, further comprising:
and the office area server analyzes the acquired data in real time according to the position of each construction machine, time, elevation, construction units and construction process, counts weak areas, and realizes early warning and troubleshooting of hidden danger or substandard operation.
10. The method of claim 3, further comprising:
a user mobile terminal scans a two-dimensional code of a certain mechanical device in a field construction area; analyzing the unique identifier of the mechanical equipment corresponding to the two-dimensional code; and calling corresponding construction progress data from a first database server of the data center according to the unique identifier obtained by analysis, and feeding the called construction progress data back to the user mobile terminal for display.
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