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  • Automotive UWB module: to achieve high precision positioning

    2023-06-01 463

    With the rapid development of intelligence and automation, the positioning and navigation requirements of vehicles are more and more high-precision. Automobile UWB module (Ultra-Wideband) is a kind of technology designed to meet this demand. This article introduces the concepts, application scenarios, working principles, advantages and disadvantages, and future development trends of automotive UWB module in detail.

    Automotive UWB module: to achieve high precision positioning

    I. Concepts and Application Scenarios


    UWB is a broadband wireless communication technology, mainly used in ranging, indoor positioning and navigation fields. In the automotive field, UWB technology is widely used in vehicle positioning, navigation, autonomous driving, intelligent transportation and other aspects. Among them, automobile UWB module, as the carrier to realize the technology, is the core component of automobile application of UWB technology.


    Two, the working principle of the vehicle UWB module


    The working principle of vehicle UWB module is mainly divided into two parts, namely transmission and reception.


    During transmission, the UWB module transmits a series of pulses with a wideband signal through the generator. These pulses are sent into the air and can pass through obstacles without changing their frequency. The transmitted signal then fluctuates in all directions and bounces when it reaches an object or surface and is picked up by the UWB module through a receiver.


    In the process of receiving, the UWB module will receive the bounces back, and then process them according to their differences in time and frequency, and convert them into distance data through algorithms. Finally, the data from the entire process is sent to the on-board computer to determine the vehicle's position and navigation direction.


    Iii. Advantages and disadvantages of automobile UWB module


    Advantages:


    1. High-precision positioning: UWB technology has the characteristics of high-precision ranging and can achieve millimeter-level positioning accuracy, which is in line with the automotive industry's demand for high-precision positioning.


    2. Strong reliability: UWB signal transmission is less affected by obstacles and is not easy to be interfered. Meanwhile, it also has the characteristics of anti-multipath propagation, which makes the reliability of UWB technology relatively high.


    3. Wide applicability: UWB technology is not only suitable for indoor positioning, but also suitable for outdoor environment. In the automobile industry, UWB technology has been applied in a variety of scenarios, such as vehicle autonomous driving, communication between vehicles, and communication between vehicles and roads.


    Disadvantages:


    1. High cost: The relatively high price of chips and modules of UWB technology restricts its promotion and application in large-scale applications.


    2. Technical development needs to be strengthened: At present, UWB technology still has some technical bottlenecks, such as solving interference problems, improving transmission rate and other aspects, which need to further strengthen technical research and development.


    4. Future Development trend


    In the future, with the continuous development and application of autonomous driving technology, UWB technology has broad prospects for development. Automotive UWB module will continue to improve its performance and stability, further achieve high-precision positioning and navigation functions, and is widely used in the Internet of vehicles, intelligent transportation, on-board entertainment, business services and other fields.


    At the same time, UWB technology will also receive more attention and support in terms of technical standards, policies and regulations. For example, the European Commission has promulgated the spectrum utilization standards and specifications of UWB technology, and the United States FCC has listed UWB technology as one of the key technologies in the future, which has laid the foundation for the stable development of UWB technology.


    In general, vehicle UWB module is one of the necessary technologies to achieve high-precision positioning and accurate navigation. Although there are some temporary disadvantages, but the advantages are obviously more prominent, the future development prospects are very broad. It is believed that with the continuous development and application of technology, UWB technology will play an increasingly important role in the automotive field to achieve a more scientific and convenient driving experience.


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