Research and Implementation of the Safety Protect Scheme for Embedded Real Time Operation System

Based on the analysis of the safety related ARINC653 specification, an scheme of embedded real time operating system being suitable for safety critical applications:S-CRTOS, is proposed in this paper. The principle of isolation and protection is introduced in details, and several critical technologies:partition schedule, process pool and asynonous mechanism, are also described. This design has been implemented at some target boards, and can be used for safety critical systems:avionics electronics and automobile electronics etc.