A set of UWB technology high-precision positioning system source code developed based on Vue+Spring boot front-end and back-end separation architecture.The UWB high-precision personnel positioning system provides basic functions such as real-time positioning, electronic fence, and trajectory playback, as well as various expansion functions. Users can choose and match expansion functions arbitrarily according to actual needs. The system is easy to deploy, easy to use, and responds in real time. UWB high-precision positioning adopts the application layer, equipment acquisition terminal, data storage and big data analysis to carry out the main frame design. The realization principle is clear, the structure is rigorous, and the system function is greatly optimized. High-precision wireless positioning sensor, through the patented wireless pulse technology, through the deployment of a limited number of positioning micro-base stations in the positioning area, it can accurately locate the location of employees, vehicles, and assets on the positioning tags in real time, and display the location information of people, vehicles, and objects in real time On the GIS map, safe area control, personnel on-duty monitoring, and vehicle real-time trajectory monitoring can be performed.
1. System overview
The system adopts UWB high-precision positioning technology, which can realize centimeter-level positioning. As a high-speed, low-power, high-capacity emerging wireless local area positioning technology, UWB's current applications mainly focus on precise positioning indoors and outdoors. It is widely used in industrial automation, logistics warehousing, power inspection, coal mine construction, automatic driving and other fields.
Using uwb indoor positioning technology, in the form of wearing a tag card, can obtain the precise location of personnel in real time, with an accuracy of up to 10cm, integrating risk control, video linkage, historical track playback, personnel management, electronic fence, various behavior monitoring, emergency rescue And other functions as one.
The system uses the communication network as the main transmission platform, and the corresponding positioning base station, positioning anti-tampering bracelet and other equipment are connected to the system, and the management software and the main system use a standard dedicated database to exchange background data to achieve the tracking and positioning of regional targets and safety manage.
2. System features:
【Real-time positioning】
◆ Obtain the location, distribution and activity track of personnel/materials/vehicles in real time;
◆ The quantity of materials and vehicles can be queried in real time to realize fully automated management;
◆ Intelligently search for materials and vehicles, improve work efficiency, and realize reasonable scheduling.
[Intelligent attendance and working hours statistics]
◆ Intelligent attendance: Automatically record attendance information of factory personnel;
◆Working hours statistics: statistics of individual or department working hours information in each time period;
◆ Data export: query and print attendance information according to personnel information, and generate attendance reports.
【Behavior Monitoring】
◆ Implement behavioral monitoring of personnel in the area to effectively prevent cross-post/off-post, overstaffing/missing staff, etc.;
◆ Alarm reminder for personnel staying over a certain period of time, and custom setting of the detention area and time;
◆ Multi-person gathering/unattended alarm reminder, custom safe gathering number;
◆ Alarm reminder when people are still for a certain period of time, and the limit time can be customized.
【electric fence】
◆ It is possible to flexibly set the shape of the electronic fence, alarm rules and access authority;
◆ Carry out alarm management for personnel entering and exiting dangerous areas without authorization to ensure the safe range of activities of personnel.
【Video linkage, visual data analysis】
◆ The linkage monitoring system conducts video surveillance on key areas to improve early warning capabilities;
◆ Keep video records for alarm events to provide basis for event processing;
◆ Personnel efficiency analysis, material distribution statistics, to achieve rational scheduling of personnel and rational utilization of storage materials.
UWB positioning card:
UWB three-proof positioning label, wristband type label, positioning label module, helmet type label, work card type label
UWB base station:
Wiring-free wireless positioning base station, outdoor positioning base station, positioning base station module, panel type positioning base station
3. Spatial dimension
If divided by dimension, positioning technology can be divided into zero-dimensional, one-dimensional, two-dimensional, and three-dimensional positioning modes. Enterprises can choose the appropriate positioning mode according to their actual needs, the positioning mode of UWB personnel positioning technology.
The zero-dimensional positioning mode belongs to presence monitoring. It usually works by checking whether there are positioning tags in the current area. This method has great limitations and is not used much at present. A more suitable positioning scenario is a prison, which is mainly used in the presence of personnel in space, but currently other positioning technologies can cover this single type.
One-dimensional positioning mode is mainly used in distance measurement, measuring length or height through the distance between two points. The main application scenarios are ranging and positioning in tunnels.
Two-dimensional positioning is a widely used positioning method, which can basically be applied to all scenarios. By building base stations, determining the location of tags in the area, accurately locating the location and behavior trajectory of target tags, and accurately locating personnel and equipment.
The three-dimensional positioning mode is currently a relatively popular positioning method, which is upgraded on the basis of two-dimensional, mainly reflected in the visualization of positioning targets, which is convenient for managers to manage.
4. Technical characteristics of UWB positioning
UWB personnel positioning technology is a new type of wireless communication technology, which is very different from traditional communication technology.
In the traditional communication system, data transmission generally needs to be carried by a carrier, but UWB personnel positioning technology does not need it. Instead, it transmits data by sending and receiving extremely narrow pulses with nanosecond or even sub-nanosecond level. One information bit Mappable into hundreds of such pulses.
1. Low power consumption
The UWB personnel positioning system uses periodic pulses to send data. The pulse duration is very short, generally between 0.2ns and 1.5ns, and the duty cycle is very low, which saves a lot of power consumption for sending continuous carrier waves, so the power consumption can be reduced. Do it very low.
2. High security
The physical layer technology of the UWB personnel positioning system has natural security performance. Its bandwidth is large, and the transmission power spectral density is lower than the noise. The information carried is submerged in the noise, and the probability of being intercepted and interfered is very low. Conversely, the probability of affecting other wireless communications is also very low. To sum it up. That is, I do not interfere with others, and it is difficult for others to interfere with me.
3, high precision
The UWB personnel positioning system has centimeter-level high-precision positioning capabilities. The UWB signal time domain width is extremely narrow, and the receiving end can obtain extremely high time resolution when measuring. Simply speaking, the time measurement is accurate, which is the basis for realizing high-precision positioning.
At the same time, it also has a strong anti-multipath ability, and it is difficult for signals arriving from different directions to overlap and interfere, which is also very beneficial for high-precision positioning.
4. Low cost
Deploying a UWB personnel positioning system requires certain hardware procurement costs, but UWB base stations have a large coverage area, with a typical radius of 50-150 meters. Under the same area, less unfamiliar equipment is required. At the same time, once the UWB personnel positioning system is debugged and deployed, there is almost no need to change it, it can be used for a long time, and the operating cost is low.
5. Application characteristics of UWB high-precision positioning system:
1. Positioning accuracy: UWB high-precision positioning system has very high positioning accuracy, which can reduce the positioning accuracy to centimeter level. This enables UWB systems to be used in precise positioning applications.
2. Distance measurement: UWB positioning system can accurately measure the distance between two nodes, and can be used for indoor/outdoor real-time distance measurement.
3. Fault tolerance: The UWB system has very good fault tolerance, and can still accurately locate under the conditions of occlusion, electromagnetic interference, and low SNR.
4. Power consumption: The UWB system has low power consumption and can realize a positioning system with low power consumption.
5. Real-time: UWB positioning system can provide real-time positioning, which is suitable for high real-time applications.
6. Analysis of UWB high-precision positioning system application in specific industries
1. Manufacturing industry: It can realize real-time positioning of personnel, vehicles and materials, work attendance, electronic fence, historical track playback, patrol inspection, 3D display, video surveillance linkage, etc.
2. Energy and electricity: Positioning of personnel, vehicles, and materials, real-time trajectory monitoring, historical trajectory, electronic fence, arrival at the post, 3D display, video linkage, etc.
3. Logistics industry: locate personnel, vehicles, assets, and tools, and accurately display the location information of people, vehicles, and objects in the logistics warehousing control center.
4. Prison: Accurate and real-time positioning of personnel can keep track of the location, activity track and distribution of personnel in each area of the prison at any time.
5. Nursing home: It can realize the precise positioning of the caregiver. The management personnel can set the electronic fence. When the ward leaves the specified area or exceeds the time, the background will trigger an alarm. rescue.
6. Coal Mine Tunnel: Realize precise and real-time positioning of personnel, and be able to grasp the location of personnel in the coal mine, the trajectory of activities, and the distribution of personnel in various areas of the coal mine at any time, and can carry out emergency rescue in a timely manner under special circumstances.