研究基于VxWorks嵌入式實時系統下M 總線控制系統的軟件設計思想和實現方法．該系統需要設置兩個各自獨立運行的實時任務． 達到對外部設備進行控制的功能．第1個任務負責收集命令和通過傳感器采集到的數據，并設定命令優先級；第2個任務負責解釋執行，并發送命令執行后的啊應，兩個任務之間通過命令緩存鏈表進行鍾信．此設計思想簡單、高效，可以被廣泛應用在與M 總線相關的其他控制系統中．

Proposes a new"software designing idea and method of implementation for M bus
control system based on VxW orks embedded real—time systems．In oIdeI to realize the function of controlling the device，two real—time tasks are set．The one gathers the command and the data collected by sensor，and set the priority：the other runs the command and feeds back the result to the device that needs the result．They communicate by a command buffer link between them．The method used in this paper is simple and highly efficient and can be used in other kinds of control systems related with the M bus system ．