Abstract: According to the design of network sensors based on the standard of IEEE 1451.2, this paper proposes a design method of plug & play robotic perceptual system node for the information acquisition of robotic perceptual system in network environments. In addition, to a very perceptual an online programming method is presented for the specific perceptual node. That is to say, some parameters of a specific perceptual node, such as manufacturer、date、calibration parameter and so on can be modified online. The topology structure of the network sensors and the digital interface are also presented in this paper.