查询词典 asynchronous communication

Keywords :Three-phase asynchronous motor ,computer auto test system ,Intelligence instrument bearing ,Communication facility ,Electric power electron technique .

关键饲：三相异步电机，计算机自动测试系统，智能仪器仪表，通信设备，电力电子技术。

Simultaneously, the system also has with the computer asynchronous serial communication interface based on the programmable logic device CPLD.

系统包括模拟开关、测量放大器、AD转换器、CPLD中心逻辑控制器、掉电数据保存单元，系统实现了通过CPLD编程完成与计算机串口间异步串行通信功能。

Finally, the feasibility and applicability of the designed system was verified by practical particleboard hot-pressing experiment. The development of the Automatic measurement system for monitoring the internal-mat environment was based on LabVIEW program which is a powerful virtual instrument design workbench. Developed system in this paper can provide a friendly interface, an animated process-monitoring window including a real-time data acquisition of 2 pressure signal channels and 4 temperature signal channels, as well as the asynchronous serial communication between measuring computer and the data acquisition. Practical application testing and data analysis showed that this measuring system was useful and easy to operate by providing accurate and reliable data.

本文详尽介绍了人造板热压过程中板坯内部环境检测系统各组成部分的工作原理以及它们在系统中的作用，着重阐述了系统硬件设计和检测软件的开发，并通过刨花板的热压试验，验证了系统设计可行性和先进应用虚拟仪器系统开发平台-LabVIEW 编制了热压板坯内部环境自动检测系统的应用软件，该软件具有友好的人机交互界面、简单直观的：工艺流程监控、安全可靠的故障处理措施等优点。

The foundation of this system provides a good reference to promote the standardization and intelligence of the overhaul and maintenance of vacuum switches. This paper develops a special HF pulse power supply for internal pressure estimation, which achieves the output of HF-HV sinusoidal pulse wave whose frequency and amplitude can be modified respectively, and meets the design requirements according to the results of Simulink simulation and practical experiments. With the help of AT89S52, this paper designs an I~2C serial bus based signal detection system for peak value signal acquisition of HF pulse currents, which communicates with the upper computer by asynchronous serial communication for uploading the data. In the upper computer, a human computer interface is developed by Matlab software, whose functions are to do some computation and graphic display, such as calibrating the relation curve of vacuum degree and peak value of HF pulse currents, vacuum degree computation, and vacuum lifetime evaluation analysis basing on grey forecasting model as well as making relative suggestions.

本文研制了用于真空度检测的高频脉冲电源，通过Simulink仿真和试验检验其满足设计要求，实现了电压幅值和频率独立可调的正弦波高频高压脉冲输出；利用以AT89S52为核心基于I~2C串行总线的信号检测系统实现高频脉冲电流峰值信号的采集，通过异步串行通信实现单片机与计算机之间的数据通信，将检测数据传至上位机；在上位机利用Matlab开发人机交互界面，实现相关数据处理和图形显示，包括真空度——高频脉冲电流峰值关系曲线标定、真空度数值计算、基于灰色预测模型的真空寿命评估分析和提出相应决策建议。

The asynchronous transmission mode provides for communication with no timely restrictions. Packets reach the receiver as fast possible.

在异步传输模式中，信息的传送不受时间条件的约束，数据包总是尽可能快地被送达接收端。

Equipped with AT89C51,the temperature sensor and the modulus convertor and coordinated by soft and hard wares,the system can fufil the instantaneous gathering of multichannel temperature signal,then,by meaus of asynchronous string communication,send the digital signal to PC which can separately display the instantaneous value and the average value of each channel temperature in bar diagram and weblike form,and print the temperature curve graph through data scale transferring,analyzing,and collating.

该系统运用单片机AT89C51、温度传感器保温器及模数转换器，通过软硬件的配合，实现了多路温度信号的实时采集，用异步串行通信发送数字信号到PC机，PC机经过数据的标度转换、分析、整理，分别用棒状图和网状表格显示各路温度瞬时值和平均值，打印出静态降温调温曲线图。

X further provides a common windowing system by specifying both a device dependent and an independent layer, and basing the protocol on an asynchronous network protocol for communication between an X client and X server.

更进 一步，X还可以通过同时定义一个设备依赖和设备无关层，提供一个更常用的开放式窗口系统，并且基于X协议还可以实现基于异步网络通信的X客户端和服务器端。

The attributes of asynchronous, synchronous, and isochronous data transmission come from the fields of computer communication and switching.

在计算机通信和交互领域中有三种数据传输方式，它们是异步传输和等时传输。

The publish/subscribe system has a wide potential application due to its asynchronous, many-to-many and loosely-coupled communication properties.

发布/订阅系统技术具有异步、松散耦合和多对多通信的特点，有着广阔的应用前景。

The publisher/subscriber system over P2P networks is adapted to support large-scale distributed computing environment and highly dynamic systems. The system will be used widely due to its asynchronous, many-to-many communication properties.

基于P2P网络的发布/订阅系统满足了动态多变的大规模分布式计算环境的要求，实现了异步、松散耦合和多对多通信，有着广阔的应用前景。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。