System frame is the clue of this paper . this paper puts the emphases on methods of image data compressing , gprs net and the implementing of image collecting terminal . system control terminal on pc is also introduced 本文以无线图像监控系统开发的整体框架为线索,着重阐述了图像数据的压缩方法、 gprs无线网络通讯及图像采集终端的实现,简单介绍了系统管理终端在pc机上的实现。
The research work including constructing the whole frame and design these main composing : high voltage collecting terminal , low voltage collecting terminal , charge controlling terminal , supervising center and mobile electro - supervising terminal 包括防窃电系统的整体构架以及系统的主要组成部分:高压采集终端、低压采集终端、负荷控制终端、监控中心和移动用电监管终端的设计。
Keywords : input control terminals output control terminals basic control terminals programmable control terminals alarm signal output terminals analog output terminals switching output terminals up / down function multi - speed function frequency arrived function 关键词:输入控制端子输出控制端子基本控制端可编程控制端报警输出端模拟量输出端开关量输出端升速/降速功能多档速功能频率到达功能。
In data communications , a method of controlling terminals on a multi drop or clustered data network where each terminal is interrogated in turn by the computer to determine whether it is ready to receive or transmit data . data transmission is only initiated by the computer 在数据通信中,一种控制多点式或群集数据网络上终端的方法,其中每个终端均由计算机轮流询问,以确定它是否准备好接收或发送数据。数据传输只由计算机启动。
The remote measuring and controlling terminal based on embedded real - time operating system ( rtos ) discussed in this paper is a field control terminal system with the background of the railroad supply water system , and according to the embedded system design principle 基于嵌入式实时内核的远程测控终端是以铁路供水系统为背景的、根据嵌入式系统设计原理构建的现场控制系统。本文提出了远程测控终端设计方案,对远程测控终端各部分的功能做了描述。