Research of wireless realtime communication for group of tower cranes
ZHOU Jianxing， MA Dongfang， JIANG Wei， CHEN Long ，SHEN Shanshan
（Key Laboratory of E&M， Ministry of Education & Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, China）
Abstract:  Aiming at the problems of the complex environment of modern construction site, the random distribution of tower cranes and the hard and expensive physical connection between the tower cranes, the technology of industry wireless communication was investigated. On the basis of Token Bus Network, the wireless communication based on token passing was presented. The function of auto login and logout system and fault detection was also added to the wireless communication protocol. Finally, the flow of this wireless communication and the format of frames were given. The results indicate that this wireless communication mode can not only make the system fast and realtime but also have the good expandability.
Key words: wireless communication； realtime； token passing； group of tower cranes