【作者】 卢尚才；

【导师】 陈长缨；

【作者基本信息】 暨南大学 ， 光学， 2008， 硕士

【摘要】 在自动化控制以及重要工程的现场实验监测中,需要实时了解和监测旋转机械部件或旋转轴上的各种状态参数,旋转体信息监测与传输系统正是为了满足这一需求而出现的。本论文研究的高速旋转体信息采集与光传输系统是一套工作于高温高加速度负荷的特定旋转体上,依靠自带电池进行长时间连续监测的微型信息采集与光传输系统。该系统要求在最高转速为6000rpm的旋转体上实现4路传感通道单路采样速率为800sps的监测,并需在距离为60～600mm范围内实现数据的传输。根据系统的任务要求本文提出了高速旋转体信息采集与光传输系统的基本模型。通过对光通信时空窗口与不同的采样数据量、通信距离、通信速率的关系讨论,提出了在受限光通信时空窗口下建立光传输链路的方法。论文还研究了系统轴上端模块采样与通信时序冲突的问题,在此基础上,设计了采样与通信双中断的运行模式,以及在片上有限的资源条件下,实现数据存储空间有效利用的方案。通过研究数据传输速率与光通信时空窗口的关系,建立了包含突发式光通信链路的三机链接信息采集—传输系统。论文实现了全系统软硬件的总体设计,并研制了实用样机。样机在实验中实现了不同转速下多路监控信息的采集及传输,并通过了高温、振动、冲击环境测试实验。最后对论文工作进行了总结,并提出了高速旋转体信息采集与光传输系统未来改进与发展的思路。更多还原

【Abstract】 Monitoring the parameters of rotating machinery or rotating axis is needed in automatic control and real-time monitoring for an important project, and the rotating machinery monitoring and information transmission system which can meet this demand. The high-speed rotating shaft information acquisition and optical transmission system which studied in paper is a micro-system that works in high temperature and high acceleration load specific rotating shaft, relies on its own battery for continuous long working hours. The system should achieve the requirement of sampling 4 sensor channels on rotating shaft which highest rotating speed is 6000 rounds per minute, and the sampling rate is 800 samplings per second. The data need to be transmitted within the radial distance of 60 ~ 600 mm.According to the system requirements, thesis offers a basic model of the high-speed rotating shaft information acquisition and optical transmission system. Through the discussion of optical communication space-time window with different sampling rate, communication distance and communication rate, thesis proposed the method to establish optical communication in the limited optical communications space-time window. Thesis also studied the conflict between sampling time and communication time of module on the shaft, and then designs a double interruptions mode to deal with this problem. The effective use of limited data storage space is concerned. Through the study of the relation between data communication rate and optical communication space-time window, the 3 units linked sampling-transmission system which uses burst-mode optical link was established.Thesis designed hardware and software of the system and the prototype was made. In the experiment, the prototype can monitor multi-channel and transit monitoring data in different rotational speed. The prototype pasts the high-temperature, vibration and shock environment test.The future improvement and development direction of the high-speed rotating shaft information acquisition and optical transmission system was proposed at the end of thesis.更多还原