According to the principle of electrical signals returned from different position of mercury ball in the bare annular resistance wire

a new one-dimensional direction and acceleration sensor is designed. The threedimensional（ 3D） motion information of the moving objects can be detected by 3D sensor which constituted by three perpendicular one-dimensional sensors; the 3D orientation and acceleration information of moving objects can be obtained from the array composed by the electrical signals returned from two one-dimensional sensors

which corresponding to the motion information.