A wall climbing mobile module based on screw and nut for stable and fixed error boundary sensing in intelligent space

In this paper, the new wall climbing robot, `Mo-Mo´, is introduced. The MoMo can be sensor mounted device for the intelligent space and the devices can be rearranged by themselves according to the situation of space through using the mobile mechanism of MoMo. The MoMo uses the screw-nut mechanism to stick to the wall and the ceiling. This mechanism makes the MoMo to be stable condition while the MoMo is not moving. Furthermore, it leads to the position error of MoMo up to a certain range. The mechanism of MoMo and the evaluation of its performance are shown in this paper.