We know that the hot virtual reality device market in recent years, namely the VR market, is indispensable for the support of sensor technology. As the core component of the human-computer interaction function in the VR device, the sensor application is good or bad, which largely determines the user experience of the VR device. Compared with smart phone sensors, VR devices require higher accuracy and real-time performance of the sensor. If the accuracy and real-time performance are not enough, it will directly lead to motion sickness.
VR virtual wearable device
Currently, sensors in VR devices can be divided into three main categories:
First, the most important category is the IMU sensor, the inertial sensor. These include accelerometers, gyroscopes and geomagnetic sensors, which are used primarily to capture head movements, especially rotation.
When using a VR device, the physical information of the user in the virtual world is mainly the orientation of the head and the physical location. Therefore, IMU sensors play a fundamental role in VR. Therefore, for VR devices, the product experience is mainly the accuracy of motion capture and the delay of display, which is largely determined by the IMU inertial sensor in the device.
Existing VR sensors can be divided into three main categories
The second type is motion capture sensor. The current solution includes infrared camera and infrared sensor. The specific scheme is different, and the sensors used are different. It is mainly used to realize motion capture, especially the movement of the user before and after.
The third type is other types of sensors that are used in VR devices, such as proximity sensors for wearing detection, capacitive sensing sensors for touch panels, etc., which have been widely used, and infrared cameras used for eye tracking, and gesture recognition. Sensors that implement AR functions may be used in future VR devices.
At present, domestic VR sensors are mainly imported from the United States and Japan.
At present, in the domestic VR equipment sensor supply market, the above three types of sensors are not domestically produced. The sensors currently used are mainly imported products from the United States and Japan. There are also companies that do sensors in China, but they are mainly monopolized by the big foreign companies in the global market.
On the reality level, although the cost of the display occupies the weight of the hardware cost of the VR device, the imported sensor does not impose a large burden on the cost. However, in the long run, if you want to further improve the VR device function and enhance the user experience, it is far from enough to study the sensor algorithm. The self-controllable sensor manufacturing may become the key to the industrial development. In the long run, the localization of VR sensors still has a long way to go.
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