Research And Implemention Of Wireless BA-DDC Controller

Building Automation System (BAS) whose intelligentization influences intelligent buildings' intelligentization is an important part of intelligent buildings. DDC which is used to monitor and control devices belongs to products of BAS. The thesis dipicts functions of DDC of Distributed Control System and introduces the new generation wireless technology ZigBee which is suitable for intelligent buildings.Based on the actualities and developing trend of DDC controller, the thesis proposes the scheme of adopting ARM7 processor and ZigBee technology to communicate with PC and MC.Adopting S344B0X core of ARM7 of Samsung in the hardware design, the operating speed and the capability of data processing of the controller are improved. The controller's kernel module, interface module and drivers depend on the functions is developed; used widely, open source real-time OS μC/OS-II is developed, and multi-tasks capability is improved. In the lab of XAUAT, the experiment of the function of control air temperature by using incremental PID algorithm is simulated.