Research And Design Of Wearable Data Arm Based On Somatosensory Interaction Technology

With the rapid development of new technologies such as virtual reality and intelligent interaction,somatosensory interaction technology has quickly become a research focus in the field of human-computer interaction as a new interaction mode.Compared with the traditional human-computer interaction mode,somatosensory interaction can bring new interaction experience to users.According to the difference of somatosensory measurement technology,there are three main types of somatosensory interaction devices on the market at present: myoelectric,optical and inertial sensors.Among them,the myoelectric somatosensory interaction equipment has high signal acquisition difficulty,low accuracy and limited recognition actions.Although the optical somatosensory interaction equipment has high sampling rate and good motion capture effect,it has the disadvantages of limited range of motion and poor anti-interference.However,although the inertial sensor-based somatosensory interaction device is not affected by the range of activities,its technology is complex and expensive,so it is difficult to be popularized.In addition,the three types of somatosensory interaction devices generally lack feedback information on tactile aspects,and the user experience effect is poor.In order to solve the above problems,this paper has developed a complete set of wearable data arm somatosensory interaction equipment based on MEMS inertial sensors and with tactile feedback function from the aspects of system composition,algorithm accuracy and manufacturing cost.The device can not only avoid the limitation of optical identification method from the root,but also be convenient to use and low in price.According to the functional requirements of the data arm,this paper determines the selection of sensor data acquisition module,main control module,wireless communication module,tactile feedback module and other components and completes the hardware circuit design.Based on inertial navigation technology,quaternion attitude solution algorithm based on complementary filter is adopted to solve the arm motion attitude,thus improving the attitude solution precision.According to the functional requirements of the system,the software design of wearable data arm somatosensory interaction system is completed,and the Bluetooth wireless communication technology is used to realize the uploading of the posture data of the data arm and the downlink of the interactive feedback information of the virtual interaction platform.The wearable data arm designed in this paper is tested experimentally,and the results show that its attitude calculation accuracy is kept within 0.5 degrees and the frame rate of the system is 72.2 FPS,which can meet the design requirements.The wearable data arm designed in this paper has high reliability,good practicability,strong immersion,portability and expandability,and can be widely used in somatosensory games,medical rehabilitation,sports and other fields.