通信单元

This dissertation studies the realization of communication in SCADA, and actualizes configuration of communication COM and unit.

本文主要研究了SCADA系统中远动通信和子站内部通信的实现，以及通信子系统串口及单元组态的实现。

A high-speed digital signal driver used in data communication system is composed of a main drive unit containing the CMOS inverters at preceding and final stages and a feedforward and positive feedback unit containing the CMOS inverters at the first and the second stages and the forestage CMOS inverter is said main drive unit.

本发明涉及一种用于数据通信系统的高速数字信号驱动电路，其包括：含有前级CMOS反相器和末级CMOS反相器的主驱动单元，含有第一、第二级CMOS反相器及所述主驱动单元的前级CMOS反相器的前馈和正反馈单元。

The hardware design of it mainly includes circuit of radio reception、signal sampling circuit、the CPU control unit ,man-machine conversation and communication interface;The software design contains data sampling module ,analysis and processing module,keyboard and display program module and so on.

监测记录仪的硬件设计主要包括收音电路、采集电路、CPU控制单元、人机接口单元和通信接口；软件的设计包含数据采集、分析处理、远程通信和键盘显示等程序模块。

The main part of the hardware designs are about communication circuit design and Reset circuit design of the sink node, processor and power supply unit design of the field node.

硬件设计主要包括网关节点的有线通信电路及复位电路的设计、现场节点的处理器单元和电源单元设计，以及射频电路的设计。

SCSI addresses do not include logical unit number, because those are not used for communication.

SCSI地址不包括逻辑单元号，这是因为这里的通信并没有使用到逻辑单元号。

By using complementary variable method to analyze the state-changing equations of this queueing system, the generating function of stationary probablity distribution of retrial queue length, some performance indexes such as three different stationary state probablity,stationary availability, and stationary failure frequence of the transfer-unit are derived.

研究通信网络中交换单元的可修模型M1，2，3/G/1，呼叫的到达是重试性的，利用补充变量法对排队系统的状态转移方程作了分析，求得了重试队列稳态队长概率分布的母函数以及交换单元的处于三种不同状态下的稳态概率、稳态可用度及稳态故障频度等性能指标。

A vehicle antitheft system includes an immobilizer unit and a portable unit. Each of the units includes an antenna, a communication part, a data processor, and storages.

一种车辆防盗系统，包括固定单元和移动单元，各单元具有天线、通信部分、数据处理器和存储单元。

The automatic gathering system of the meteorological factors has three units: the unit responsible for the measurement and transferal of the factors, the data center to communicate with others online and the unit to show, inquire and print the data information based on the digital map.

气象要素自动采集组网系统分为3个单元：自动采集单元负责探测、传输各种气象要素；数据中心负责与各个采集单元进行双工通信；在Internet上以电子地图方式对区域用户提供查询、打印和数据分析服务。

It adopts Human and Machine Interface visual technology to implement displaying working status of remote valve chamber devices in real time.

分析比较多种远程通信技术，选择具有传输质量好、覆盖范围广、组网灵活方便等优点的北斗卫星通信技术，实现监控中心和远程控制单元之间的双向数据通信。

Based on a certain typical kind of communication and command armored car, a method of complicated face meshing by the MOM is proposed and the text file with Visual LISP language embedded in AutoCAD is dealt with.

以具有典型性的某型通信指挥车为载体，提出了一种基于矩量法的网格划分算法，并利用内嵌于Auto-CAD的Visual LISP语言，对划分后的数据文件进行操作，实现了通信指挥车的单元网格显示，通过可视化对象直观地判断网格划分是否满足矩量法的基本要求，并及时进行纠错处理，最后给出了采用该算法对通信指挥车进行三角形、矩形网格划分后的实例显示。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。