1. What are the advantages of UWB positioning technology?
UWB technology solves the major propagation problems that have plagued traditional wireless communication technology for many years. It has the advantages of insensitivity to channel fading, low power spectral density of transmitted signals, low interception rate, low system complexity, and can provide positioning accuracy of several centimeters. .
1.Simple system structure
The transmitter in the UWB system directly uses a pulse small excitation antenna, without the need for functional amplifiers and mixers. At the same time, at the receiving end, the receiver of the UWB system does not require intermediate frequency processing, and the structure is simple and easy to implement.
2. High-speed data transmission
Among civilian products, the transmission range of UWB signals is generally required to be within 10m, and the data transmission rate can reach 500Mbit/s.
3. High safety
As the physical layer technology of communication systems, UWB technology has natural security properties.
Since UWB signals generally disperse signal energy in an extremely wide frequency band, and the power spectral density is lower than that of natural electronic noise, it is very difficult to detect pulse signals from electronic noise. Pulse detection becomes more difficult when coding is used to pseudo-randomize the pulse parameters.
4. Accurate positioning
UWB technology has extremely strong penetration capabilities and can perform precise positioning indoors and underground, while GPS (Global Positioning System) can only work within the visible range of GPS positioning satellites. Unlike GPS, which provides absolute geographical location, ultra-wideband radio locators can provide relative positions with centimeter-level positioning accuracy.
5. Low cost
In terms of engineering implementation, UWB technology is much simpler than other wireless technologies and can be fully digitally implemented. It only needs to generate pulses and modulate the pulses in a mathematical way, and the circuits required to implement the above process can be integrated on a chip, and the cost of the equipment is very low.
2. Principle and introduction of uwb positioning system
The uwb positioning system is a positioning base station deployed on the uwb platform. By transmitting wireless signals, the uwb positioning system is deployed at the location where it needs to be installed. At the same time, it combines the working environment conditions (such as temperature, humidity, light, etc.) and positioning supported by the positioning base station. Algorithm to realize real-time positioning of managed objects in different geographical environments.
Personnel real-time location tracking
It can locate specific people, record their location information, and track moving people.
1. Electronic fence: It can locate people in specific areas and realize real-time positioning and tracking of moving and stationary people.
2. Mobile tracking: monitoring of position and movement trajectory during movement (trajectory can be recorded),
3. Video surveillance: Monitor real-time images of the scene, equipment status, etc., and can capture video pictures or capture picture and video information (record video).
4. Electronic fence: Set up electronic fence in the designated area.
5. Alarm information feedback: Feedback information such as abnormal conditions collected at the monitoring site to the monitoring center so that relevant personnel can take corresponding measures in a timely manner.
The UWB high-precision positioning system provides basic functions such as real-time positioning, electronic fences, and trajectory playback, as well as various expanded functions. Users can choose to match the expanded functions according to actual needs.
3. Application of UWB technology in high-risk industries
1. Power plant personnel positioning: It can realize real-time positioning management of personnel, rapid personnel search, long-term stationary warning, electronic fence, historical movement trace tracing, video linkage, SOS alarm and many other functions. It can also be used with video surveillance equipment, access control equipment, Two tickets, etc., integrate various information with personnel location, and finally realize the functions of linked viewing and supervision management of operator location, work content, access control status, and video surveillance.
2. Mine safety monitoring: Using the UWB personnel positioning system in the mine can monitor the location information of miners in real time, quickly find trapped personnel in the event of an accident, and improve rescue efficiency.
3. Construction safety: In high-altitude operations or complex environments, the UWB personnel positioning system can accurately monitor the location of workers, detect abnormal situations in a timely manner and take corresponding measures to reduce accidents.
4. Hospital emergency rescue: The UWB personnel positioning system is used inside the hospital to track the locations of medical staff and patients, improving the response speed and treatment effect in emergencies.