Design and Implementation of Wireless Fieldbus for Networked Control Systems

In this paper, a wireless Fieldbus based on IEEE 802.15.4 MAC protocol is proposed. The superframe of IEEE 802.15.4 is applied to the proposed wireless Fieldbus. The transmission and bandwidth management method are proposed for efficient transmission in the superframe. By these methods, the proposed wireless Fieldbus protocol is able to transmit three types of data (periodic data, sporadic data, and non real-time message), and guarantee real-time transmission within deadline.