When it comes to positioning, the first thing we think of are various map navigation and other positioning applications, which can also navigate routes or view location coordinates in real time.
However, unlike positioning technologies such as GPS, UWB technology is a high-precision positioning technology that can be used for indoor position tracking, achieving centimeter-level accurate position perception, and identifying spatial awareness and precise short-range position tracking.
UWB technology is a new type of wireless communication technology that can directly modulate impact pulses with very steep rise and fall times, so that the signal has a GHz-level bandwidth. Reflected in performance,
, UWB technology has the advantages of strong anti-interference, high transmission rate (tens to hundreds of Mbps), larger system capacity, and shorter communication distance.
From the perspective of positioning methods, this technology has three positioning methods: two-way ranging, triangulation, , and multi-point positioning. Before using this technology to locate, first set up the beacon , and identify the location of the object by measuring the time it takes for radio waves to propagate between the device and the beacon.
Smartphones based on UWB technology can replace wallets for direct payment and can also replace access cards. UWB technology makes smart home use easier. Point your iPhone at the smart light bulbs in your home, and you can turn them on or off with a single touch, without having to open the corresponding application and select the light bulb.
In the future, this technology may be positioned to track VR and AR devices, robots and other automated equipment, pets and livestock, boxes in warehouses, and anything else that allows for connected UWB devices in real time.
The application we can see now is just as a replacement for car keys and passwords, but at the moment when the concept of the metaverse is on fire, this technology is likely to become an important part of it, such as helping smart glasses recognize us in reality position in life, etc.
digital key is based on UWB technology and realizes key functions through smartphones. The traditional car key is a key + remote control function, which can only open and close the door. The digital key has functions such as keyless unlocking and locking, remote key authorization, opening and closing of windows, air conditioning and shared vehicles.
From the user's perspective, traditional car keys will encounter various problems during use. For example, the key is forgotten, the key is lost, the key cannot be found, the key is locked in the car, or there are a lot of things in the hand and there is no room for the key, etc.
UWB digital key is easy to carry, or there is no need to carry an additional physical key, the mobile phone can become the key. Feel free to use, free your hands. There is no need to operate the key or mobile phone. According to the different distances between the key and the vehicle, from far to near, functions such as comfortable welcome, keyless entry and keyless start are respectively realized.
UWB can realize the ranging function of the key and the car body. After the signal containing the time stamp is emitted from the transmitting device, the receiving end calculates the flight time based on the received information, and then calculates the flight distance to achieve accurate ranging.
performs comprehensive calculations based on the comprehensive distance between the key and each anchor point on the car. At this time, the car-side system can obtain the precise area or location of the key in real time.
UWB technology has high positioning accuracy, and UWB positioning accuracy can reach centimeter level; it has strong anti-interference, and UWB technology can effectively combat multi-path interference problems. The introduction of
UWB technology brings more imagination space for human-vehicle interaction, but the application of UWB is to maximize the application of UWB characteristics without increasing the hardware cost as much as possible.
