A 3-D display system and construction method based on MEMS acceleration and geomagnetic sensor

The paper constructed a 3-D display system which comprised of a ball-like controller, wireless transmitter/receiver, screen and software in host computer. The hard-core of ball-like controller consists of a tri-axial MEMS geomagnetic sensor MXR9500G and a tri-axial MEMS acceleration sensor MMC3120MG afforded by MEMSIC, Inc. in Wuxi, Jiangsu. With the system, when you rotate the ball-like controller, the same action will be reflected in Google Earth in the screen. What´s more, if you pat the ball-like controller, the earth in the screen will zoom in, so that you can browse more details. And it´ll zoom out when you shake the controller forcibly. With these functions, the system can display rich and colorful information on exhibition as well as geography teaching aids.