基于实时Linux的PET控制软件设计与实现

在对实时系统基本原理分析的基础上,提出一个多任务框架,并基于此框架开发了PET实时控制系统.首先,详细介绍了PET控制系统软件部分的各个模块的实现及系统总的流程,然后通过实验验证了PET扫描床、棒源、隔板以及摆动装置各机械子系统都能够很好地完成既定的控制任务、期望的运动控制精度,并且系统运行稳定.实验结果表明,基于多任务框架的PET实时控制系统具有很好的可靠性和实时响应.

Control Software Design and Implement of PET Based on Real-Time Linux

A multi-task framework proposed for PET(positron emission tomography) on the basic principle of real-time system analysis is used to develop PET real-time control system.With the realization of the software part particularly detailed,the system flow chart of the software part is introduced.Then,those mechanic subsystems including scanner bed,rod source,septa and wobble are all verified experimentally that they are available to complete the planned control task and expected motion control precision with stable system operation.Experiment results show the high reliability and real-time response of the proposed PET real-time control system based on multi-task framework.