The improved interpolation enhances the process precision . the auto programming function of the graphics inputting mode and cutting chinese characters is added . it makes programming and controlling can switch between foreground and background to adopt the multitask operating system windows 此外，系统采用多任务的windows操作系统作为系统平台，加工控制和编程可以在前后台互相切换，并采用动态图形显示方法对加工过程进行跟踪。
The foreground / background system has a poor real - time performance and the real - time kernel usually costs too much . this paper designs and realizes an interrupt - based strategy of real - time tasks scheduling , considering the characteristics of the interrupt and the real - time tasks . this strategy can reach the same performance of the real - time kernel without increasing the extra cost 针对嵌入式实时系统设计中,前后台系统实时性差,实时内核开销大的问题,利用中断与实时任务本身特点,提出并设计实现了基于中断的实时任务调度策略,在不增加系统资源开销、价格开销的情况下达到与采用实时内核相当的实时性能。
Optimization of the task schedule mode , which realizes a creative division on system tasks as " reserve task " , and has guaranteed the system a real - time response on the basis of " foreground / background system integration of different methods such as twice measurement " , twice seizure " , " revision online " and " revision offline " in the metering process , which enables the system to meet a high - precision requirement ( better than 2 % 0 ) at low cost 系统任务调度模式的优化调整，通过创造性的系统任务划分，引入了“遗留任务”的概念，在“前后台系统”的基础上保证了系统任务响应的实时性。综合利用了“两次测量” 、 “两次捕捉” 、 “在线校正”和“离线校准”等方法组织测量过程，使系统整体能够在低成本的基础上满足高精度的测量需求(优于2 ) 。
The system software uses typical foreground / background model . the main program serves as background and interrupts " isrs serve as foreground . system program responses all measuring , controlling , communicating and displaying tasks in time through switching between foreground and background and queuing tasks in terms of priority level 在软件组织上，采用典型的前后台模式，以主程序作为后台任务，中断服务程序作为前台任务，通过对前后台任务的及时切换以及对前台任务进行优先级排序，达到及时响应系统测量、控制、显示等一系列任务。
On this basic , it come out rs485 , bitbus application casus to distribution watch system . this system make up real time watch system and data manage net system by bitbus communication to complete detract check and focus show function of high low electric power parameter . it take on task of background communication and proscenium data manage 该方案应用bitbus现场总线构成一个完整的实时监控和数据管理网络系统，完成高、低压配电室电力参数的分散检测和集中显示等功能，上位机同时承担后台通讯和前台数据管理任务，前后台并行工作，该方案在某汽车制造厂配电系统中得到了较好的应用。
2 design and exploit a database as background support after considering the traits of the existing system in order to avoid the shortcomings such as maintenance difficulties , lacking of safety and etc . 3 design and exploit a number of modules of the distributed fault diagnosis and predictive maintenance system based on c / s structure 2 、充分考虑单机版系统现有特点之后，设计、开发了一个强大的数据库，采用数据库前后台管理，从而克服了文件管理带来的维护困难、安全性差、不易扩展、伸缩性差等缺点。 3 、设计、开发出基于c s结构的分布式故障诊断与预知维修系统的部分模块。
In the design of the software part the multi - task running mechanism based on the real - time kernel is presented . and compared with the traditional fore - and - aft pattern , the advantage of embedded real - time operation system is demonstrated , and the real - time problem of detecting system is resolved , at the same time , the system ' s stability is enhanced 在软件设计部分，提出基于实时内核的多任务运行机制，并且与传统的前后台模式进行对比分析，论证采用嵌入式实时操作系统的优越性，解决检测系统中的实时性问题，提高系统的稳定性。
Aim at the current practical situation , a kind design procedure is presented on terminal which based on arm and c / os - , and selects the arm microprocessor and operating system combine with the demand of the subject . it designs the hardware system based on the lpc2124 and the periphery interface chipset , and implements the transplantation of c / os - on the lpc2124 , compiles the hardware drivers and the api based on c / os - , the system introduces multitask based on dispatching priority to solve the disadvantage of the foreground / background system . a kind of project on remote update software based on gprs and iap is presented , and discusses the reliability in the end 针对目前实际情况,在研究了终端设计多项技术的基础上,设计了一种基于arm和c / os -的配变监控终端,结合课题的要求对arm处理器和操作系统进行了具体选型,在基于lpc2124的mcu和外围接口芯片上,进行了终端硬件系统的设计;实现了cos -在lpc2124mcu上的移植;编写了基于c / os -的api接口函数和底层硬件驱动程序;采用多任务按优先权调度的方式解决了任务处理的实时性,克服了传统前后台软件在复杂的监控终端设计中实时性差的问题;针对终端软件升级方案进行了探讨,提出了一种基于gprs网络的远程在应用编程( iap )的软件升级方案,对终端软件升级模块进行了软、硬件设计,并对升级方案的可靠性进行了探讨。
