2D and 3D air mouse

This paper presents an air mouse, which would not need any contact surface for its operation. Single device shall be able to operate in two modes, 2D and 3D modes. In the 2D mode, mouse movements shall be recorded in 2 Dimensions, which can enable full functionality of a mouse pointer on screen. 3D mode will assist 2D mode in further enhancing the mouse pointer functionality for functions such as zoom in and zoom out. 3D mode can be utilized for various applications such as 3D images or games, for 3 Dimensional interfaces with the PC. Setup of the project consists of a non-echo ultrasonic system with three receivers at different corners of the display screen and one hand held transmitter, which acts as the mouse. Upon measuring the three distances, position of transmitter in three dimensions can be determined. Once the spatial coordinates of the transmitter are known, the x, y, and z values can be applied for various uses. Planar coordinates, when used, will help us to create a mouse pointer on the screen, and the movements of the mouse pointer will be determined by x and y coordinates. Spatial coordinates of the mouse can be used for 3D application such as zoom functionality, 3D imaging and gaming.