該文針對當前工業(yè)控制領域網絡控制技術的快速發(fā)展，給出了一種應用于測控系統(tǒng)的基于Linux 的嵌入式系統(tǒng)的設計方案。利用Linux 自身提供的條件編譯系統(tǒng)，初步解決了Linux 作為嵌入式操作系統(tǒng)面臨的一些問題。并利用實時應用接口(RTAI)來增強Linux 的實時性，引入實時硬件抽象層結構(RTHAL)，利用Linux 的內核模塊機制提供實時服務和完成實時任務，解決了Linux 實時性不足的問題。通過數(shù)據采集程序的實現(xiàn)給出了在RTAI-Linux 環(huán)境下開發(fā)實時應用程序的設計方法。
關鍵詞：Linux；嵌入式系統(tǒng)；測控系統(tǒng)；實時操作系統(tǒng)；RTAI

Abstract：Presently,according to quick development of the Network control technology in industrial meausure and control fields, So we apply a kind of application of the embedded system to measure and control system by industry control fields which based on Linux of embedded system.Making use of the condition of itself to analyse the system.Primarily resolved some problems of Linux by way of embedded operating system.At the same time,by taking advantage of Real Time Application Interface to enhance the real time capability of Linux,and real time hardware abstract layer is introduced and the mechanism of loadable
kernel module is used to provide real time service and complete real time tasks. The problem of lack of real time capability of Linux is resovled. The program of data collection presents an approach to develop real-time application based on RTAI-Linux.
Keywords: Linux;Embeddeds ystem;Measure and control system;Realtime operating system; RTAI