A three dimension display system of beyond-visual-range controlled unmanned helicopters based on VRML

The small-size unmanned helicopters have good application values in many areas. A beyond-visual-range controlled helicopter display system framework is built. By acquisition of signals of angle sensor, magnetoresistive sensor, GPS module, the flying information of pitch, incline, direction, position, etc. in helicopter is gotten in the system. The signals coded by single-chip microcomputer are wirelessly transmitted to PC on the ground through a serial port. Delphi 7 developing software is used to develop the system software to realize reception, analysis and process of the data then store them to the database on PC. Thus the virtual helicopter in VRML virtual scene can reflect pitch, incline, direction and other attitude of measured real helicopter through extracting the data in database, and supply imaginative and intuitive three dimension display for beyond-visual-range control of the helicopter.