The company such as telecommunication carriers always hope to provide better quality of service ( qos ) under current system including software and hardware . carriers also want to monitor the applications online all of dayes to find bugs in software or defects in hardware in time . two of the requiements need some sophisticated estimations about the system on performance and status with low cost 另一方面,各个厂商和系统运营商,如移动、电信运营商等,希望可以对应用服务系统以尽可能低的成本和运行代价进行有效的在线监控和性能分析,并智能决策软件的当前的性能情况和软件的动态运行状态情况,从而为系统的升级和维护提供准确的具有说服力的数据和支持,以此达到向客户提供更好的服务的目的。
But traditional fieldbus has been widly used in factory field and will act an important part for a long time , so it is necessary that to realize fieldbus connect to office network , make it has the capability of inter - connection and inter - operation , and keep it ’ s architecture unchanged . the paper discusses a method to slove the problem . that is making use of ethernet / ip protocol which is one of industrial ethernet protocols , to design an embedded fieldbus gateway . the gateway mainly consists of s3c2410 , a 32bit high performance microprocessor based on arm core , to realize interconnection devicenet network , controlnet to ethernet 本文提出利用高性能、低功耗32位risc结构的arm处理器与armlinux嵌入式操作系统相结合,并利用ethernet / ip工业以太网协议构造嵌入式网关,实现设备的现场总线与企业信息网络无缝链接,并保证了devicenet和controlnet两种网络的互操作性,构建一个可跨地域共享、便于实现高层次集中管理、监控和决策的新型嵌入式实时在线监控网络。
This paper simply introduces the device of on - line monitoring for the thrust of the rotating maching , then discu ed the finite dement analyses on the on - line monitoring elastic dement for measuring thrust in detail , in order to develop the performance of the se or and the device , we calculated the distribution of the stre 、 strain 、 axial di lacement in the elastic element using the finite element method when the axial forces f = 3 104n , the result is very satisfied 简单介绍大型旋转机组轴向力在线监控装置,然后详细介绍轴向力测力弹性元件的有限元分析,为了提高所研制的测力传感器的性能,采用有限元方法计算了弹性元件在轴向力f = 3 104n时的应变、应力、灵敏度及轴位移等的分布情况,分析结果表明:所设计的测力传感器完全符合厂方的要求及仪表性能指标。
The recent development of coagulants and flocculent wa s reviewed . three topics were discussed : ( 1 ) mechanisms of coagulants and flocculen t , and the experimental methods of process study ; ( 2 ) development of coagulants and flocculent ; ( 3 ) researches on improvement of coagulants and flocculent efficiency , process optimization and on - line monitoring and controlling as well 分三部分论述了90年代以来国内外混凝剂和絮凝剂研究的主要进展: 1 )混凝、絮凝的微观机理及其行为的研究成果和实验研究手段; 2 )混凝剂和絮凝剂的开发; 3 )混凝和絮凝方法在废水处理中的净化效率的提高、条件优化和在线监控等。
Therefore , the researches of fiber optic oxygen sensors have gotten much attention of people in recent years . fiber optic oxygen sensor have many advantages such as intrinsic safety and high sensitivity , high detection precision , quick response , anti - disturbance of electromagnetism , and it can be used for long - distance , successive and on - line monitoring of the gaseous oxygen and the dissolved oxygen in dangerous environment 由于光纤氧传感器具有本质安全、灵敏度高、检测精度高、响应时间快、不受电磁干扰等优点,并可对危险环境中的气态氧和溶解氧进行远程、连续和在线监控,近年来,其研究受到了人们的极大关注。
The variation of the film composition can be monitored by using the method of spectrum analysis during the film deposition ( for the intensity of the persistent line is proportional to the particle density of the element in the vacuum chamber ) . the measurement of the transmission spectrum of the film on a transparent substrate can be used to calculate the film parameters , such as refractive index , extinction coefficient and the thickness of the film . therefore , the combination of the two methods would be helpful to on line monitoring the film constituents and the optical paramenters in the preparation of thin films 在制备薄膜的过程中,利用光谱分析的方法,以放电光谱特征谱线强度的变化来反映相应物质成分的变化,以连续光谱光源发出的光透射过薄膜的透射率的变化,来反映薄膜的厚度、折射率、吸收系数等光学参数的变化,从而达到在制膜过程中,对薄膜的成分、厚度等参数进行在线监控的目的
Therefore , the researches of fiber optical oxygen sensors have gotten attention of people in recent years . fiber optic oxygen sensor have many advantages such as intrinsic safety and high sensitivity , high detection precision , quick response , anti - disturbance of electromagnetism , and it can be used for long - distance , successive and on - line monitoring of dissolved oxygen and the gaseous oxygen in dangerous environment 由于光纤氧传感器具有本质安全、灵敏度高、检测精度高、响应时间快、不受电磁干扰等优点,并可对危险环境中的气态氧和溶解氧进行远程、连续和在线监控,近年来,光纤氧传感器及其敏感材料的研究受到了人们的极大关注。