23 7 2010 7 CH INESE JOURNAL OF SENSORSAND ACTUATORSV o l . 23 No. 7Jul y 2010 2010- 01- 18 2010- 03- 04Re s e a r c h o f Ac c e le r a t io n Mo u s e Ba s e d o n MMA7455LW ANG Pen g HU ANG B i n g