Real-time motion capture is realized through tiny sensors attached to human body.Digital MEMS sensors

computing devices and communication equipment are used to build up a set of motion capture system

which is embedded a series of algorithms composed through tailoring of navigation and robotics algorithms.Amount of calculation and precision is balanced and optimized.An algorithm which can be used in motion capture of human body is obtained and planted into motion captrue system.Experiments in ideal condition show the capture error is ± 2°

and can fast track motion.Overall experiment of system show that system capture percision can reach 70 % of professional motion capture system error is ahalyzed.On the premise of speed and accuracy

the system uses cheap equipment and it doesnot need flux data computation.It is also portable and has little interference to body movement.