Computer controlling software is also programmed , by which the software miss simulation and analysis are processed to discover possible disturbing factors and present practical resolutions . to fulfill the sampling need , a vxd interruption driver program is composed by utilizing vtoolsd software 在以往在线监测软件的基础上,编制了与数据采集卡配套的控制程序,并用vtoolsd软件编写了vxd虚拟设备驱动程序,实现了工控机中断方式的数据传送方式。
The original design program of counting data acquisition system continue to use the train of thought within dos operating system , but the multitask operating system windows are absolutely distinguished form dos . because the way of system data transmittance are program inquiring , at the same time the acquisition and transmittance process cannot be interrupted . this data transmittance mode within windows will be disturbed by other program ' s interruption and lost the requested data . so we have improved the original design of cd400bx ict data acquisition system . we shift the data transmittance mode from program inquiring to hard interruption , and install fifo cache in front of data channel , in order to guarantee the stability , reliability of data acquisiton and transmittance 由于计数式数据采集系统的原设计方案沿用了以前dos操作系统下的设计思路,而windows操作系统作为多任务操作系统其运行机制和dos有根本的区别。由于系统采用的数据传送方式为程序查询方式,而数据采集和传送的过程都不能被中断。在windows操作系统下这种数据传送方式会因为其他程序的中断造成数据丢失。
Secondly , this paper analyses data - delivering method , data - transmitting format and fault - control technology , studies and picks out direct sequence spread spectrum , accessing point network topology and the ieee802 . 11b network rule , on the basis of which the harbor wireless communication system model is established . each composing part of the system ' s model is given out . the choice of hardware equipments and the design of communication software are expounded 其次,本文对通信技术中的数据传送方式、数据传输形式和差错控制技术进行了分析,研究了港口无线通信系统中的传输方式、拓扑结构和网络标准等关键技术,选取直序扩频传输方式、接入型拓扑结构和ieee802 . 11b网络标准作为港口无线通信系统的技术基础,建立了港口无线通信系统模型,阐述了该模型的实现方法,包括硬件设备选择和通信软件设计。
D - atis and d - volmet was put into operational use in april 2001 , while pdc delivery via data link was put into use in december 2001 . instead of delivering the information by voice broadcast , these services allow direct displayprintout of relevant airfield and weather information as well as atc instructions in the cockpit via data transmission , and hence help reduce the workload of controllers and pilots , as well as enhance data accuracy 自此以后,有关飞行区和天气的资料及航空交通管制指示,便可以透过数据传送方式,在飞机驾驶舱内直接显示或列印出来,而无须再以声音播放这类资料,这些服务既能够减低航空交通管制员和飞行员的工作量,亦可提高数据的准确度。
数据传送: data transfer方式: way; fashion; pattern传送方式: load mode; move mode; transmit mode; transmittal mode报文传送方式: message mode成组传送方式: en bloc transfer operation防误传送方式: error protected transmission system阶层传送方式: bst band segmented transmission同步传送方式: synchronous transfer mode (stm)异步传送方式: atm asynchrous transfer mode远程传送方式: remote mode传输方式, 传送方式: transmittal mode数据传送: data transfer◇数据传送速度 data transfer rate; 数据传送装置 data link数据传送包: data bearing packet数据传送率: data transfer rate数据传送字: data transfer word非同期传送方式: asynchronous transmission method非同期式传送方式: asynchronous serial signal航空急件传送方式: air express service证实信息传送方式: acknowledged information transfer mode字符组传送方式: block mode成批数据传送: bulk data transfer程控数据传送: programmed data transfer程序数据传送: program data transfer; programmed data transfer串行数据传送: serial data transfer高级数据传送: high-level data link