The Study On The Application Of Step Recognition In Engine Room Virtual Reality

The attitude is the positional relationship of one coordinate system with respect to another one.The step recognition is a part of the attitude estimation in virtual reality technology.In the development of virtual reality technology,the attitude estimation recognition replaces the traditional desktop mouse and keyboard for human-computer interaction.The extension of the method is the earliest application in the aerospace and military fields and has achieved certain research results in this field.The application of virtual reality technology in ships,the traditional desktop simulator lacks immersive experience,and the research and application of the virtual turbine system based on somatosensory technology for scene interaction.In the existing turbine virtual reality interaction technology,the photoelectric sensor used collects the attitude of the training personnel,and the action amplitude of the participant is not too small,which leads to the fatigue of the personnel in the interaction process.In addition,training can only be carried out in the sensing area of the photoelectric sensor,and the sensitivity is too long.Based on the Euler angle method,three-axis acceleration and triaxial angular rate data are obtained by using an accelerometer and a gyro microelectromechanical system(MEMS),which is included in the triaxial angular rate information of the MEMS gyroscope output under static conditions.Constant value and random drift error,based on the Kalman filter algorithm,an open-loop fusion acceleration value and gyro value algorithm are designed to calculate the optimal angle estimation value at the current time.The Euler angle method is used to represent the real world.In the person's step attitude angle,the experiment calculates the weight to obtain the optimal step attitude estimation.Then use Maya software to build a virtual worker motion model and import it into the Unity3D environment.The interactive script file of the visual camera of the model is finally realized.The attitude posture of the actual training personnel is consistent with the worker/camera in the virtual reality scene.Finally,the hardware device is designed,including accelerometer and gyroscope micro-mechanical sensor,infrared sensor distance reminder,MCU,using the design algorithm,collision avoidance reminder and communication program,and the design step recognition device is worn on the foot to realize the real world.The training personnel in the attitude posture detection,the step posture information is encapsulated and sent wirelessly to the upper computer and the virtual reality cabin system scene interaction.