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The rapid development of the national economy requires strong support from a large number of basic production activities. Automated safety monitoring of mines, geological hazards, bridge deformation, water conservancy and hydropower, and oil and gas pipelines is especially important in production activities. The use of high-precision RTK positioning equipment, multi-functional intelligent sensors, and the Internet of Things can comprehensively improve the safety and supervision levels of relevant enterprises, and enhance the ability of enterprises, society and the government to respond early warnings of safety hazards.
GIS provides a visual way to combine and analyze geographic data with other data sets and tools to help users better understand issues and opportunities in the decision-making process and develop the best solutions. GIS can accurately capture and store geographic location data and combine it with other data sets. This capability is extremely important for various fields of application, such as environmental management, urban planning, emergency response, and agriculture. With the continuous development and innovation of technology, the application scope of GIS will continue to expand and deepen.
By satellite navigation positioning systems, ground-based augmentation systems, real-time kinematic positioning technology and inertial navigation technology, the operating status of various means of transport can be monitored in real time, scientifically dispatched and accurately commanded. At the same time, by using 4G/5G networks, WiFi and Bluetooth communication technologies to update management data in real time, means of transport can enter the era of precise management.
Digital construction enables full life cycle management of engineering projects by integrating high-precision positioning technologies, mechanical control algorithms and AI image recognition capabilities. Through three-dimensional visualization, high-precision maps and other means, complex engineering information is transformed into measurable and displayable digital data. BIM technology and mechanical equipment control technology are used to realize the collection, process supervision, resource scheduling and information release of full-process information of people, objects, vehicles and construction machinery under the construction site scene.
With the advancement of positioning technologies such as WiFi, Bluetooth, UWB and Zigbee, high-precision indoor positioning systems have received widespread attention. A single technology alone can no longer meet the needs of all positioning scenarios. Therefore, the "integration of multiple technologies" has become an inevitable trend in the development of positioning technology. From UWB to Bluetooth AOA/AOD to 5G, positioning technologies continue to derive, driving continuous advances and popularization of positioning technology.
WIFI positioning requires a lot of work to establish a location map and can only obtain relative coordinates. The map needs to be updated after the change of WIFI base stations or access points. The signal quality of WIFI base stations or APs varies, making it difficult to ensure positioning accuracy.
Compared with WIFI positioning, Bluetooth positioning requires the deployment of Bluetooth beacons, and the network construction and maintenance costs are higher. The positioning accuracy is also related to the density of Bluetooth beacons, generally 1-5 meters, which is not superior to WIFI positioning.
Compared with UWB positioning, RFID positioning requires more complex and numerous deployment of RFID base stations or readers to achieve the same accuracy.
Defects in UWB positioning
The expensive hardware cost of UWB hinders its large-scale use. Indoor signal interference can easily lead to signal weakening or distortion. The accuracy is limited in complex indoor environments and there may be problems of positioning errors and drift. Relative to other positioning technologies, UWB has higher power consumption, which may affect the endurance and service life of the device.
The cost is extremely low, the tag cost is low, and it can be deployed on a large scale. RFID has active and passive solutions. The passive solution does not require power supply, and the active solution has extremely low power consumption and can work for several years. There are many types of RFID base station equipment suitable for different scenarios. The equipment is relatively stable, positioning applications are widely used, can be used on a large scale, and are mature in areas such as logistics sorting, prison positioning, electric vehicle positioning, and automotive electronic license plate positioning.
Compared with UWB positioning, RFID positioning requires more complex and numerous deployment of RFID base stations or readers to achieve the same accuracy.
UWB positioning has the advantages of real-time positioning and high-precision positioning. The positioning delay time is far less than other technologies, and the accuracy can reach 10 cm, making it the first choice for high-precision indoor positioning. It has characteristics such as high dynamics, high capacity and low power consumption. It is mainly aimed at special industries with high requirements for real-time performance and high precision, such as prison positioning, factory positioning, football training positioning, logistics forklift positioning, tunnel positioning, petrochemical positioning, and energy power positioning.
The expensive hardware cost of UWB hinders its large-scale use. Indoor signal interference can easily lead to signal weakening or distortion. The accuracy is limited in complex indoor environments and there may be problems of positioning errors and drift. Relative to other positioning technologies, UWB has higher power consumption, which may affect the endurance and service life of the device.
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