数字量

对数字量采集模块的硬件平台进行了详细设计，包括所采用DSP芯片以及外部配套电路如供电部分、通信部分、数字量采集部分等。

The hardware platform of digital signal collecting module has a detailed design ; it includes all used DSP chips and external electro circuit set , such as power supply section , communication section , digital collection section and the other sections have been designed .

多通道自动扫描采样数据采集卡PCI-9112，具有模拟量输出和数字量输入输出等多种功能，附有程序开发包。

PCI-9112 data acquisition card has functions of analogue output and digital I / O etc , attached with kits .

设计实现了AD、DA、数字量输入输出等三个系统。

Designing three system including AD , DA and digital inputs and outputs .

基于光敏Z元件的数字量传感器的研制

The Development of Simple Digital Sensors on the Base of Photo-sensitive Z-elements

基于PCI总线的数字量输入输出卡及驱动程序设计

PCI Bus - Based DIO Card and The WDM Driver

介绍PLC对数字量信号和模拟量信号的采样和滤波处理方法。

The sampling and filtering methods with PLC for digital and analog signals are described in the article .

用VB实现测控系统中数字量的语音播放

The implementation of play back the numeric voice in measure and control system with VB

在PLC中编程实现了数据采集、数字量输出控制和模拟量PID控制等功能，并在仔细分析现场情况的基础上，制订了异常处理对策。

Many functions are realized in PLC such as data collection , digital output , analogy PID control and so on .

DDS是把一系列数字量形式的信号通过D/A转换形成模拟量形式的信号的合成技术。

DDS is a method that can transform the digitized signals into analog signals by means of DAC .

用一块数字量IMP作扩展控制和数字量检测。

One digital IMP used for extending control and digital monitoring .

在X射线衍射仪中X射线不能直接测量，必须把它转换成可测量的电信号，然后经过计数器转换成数字量。

Since X-ray cannot be measured directly , it must be firstly converted into electrical signal able to be measured and then convert into digital signal through counter .

用单片机产生幅度的数字量输出sin（θ）和cos（θ）；

Secondly the digital output of cos ( 9 ) and sin ( 9 ) are generated by microcontroller ;

它是利用ADC技术把模拟信号转换成数字量，进行存储再现的示波器。

It is an Oscilloscope that use of ADC technology converts analog signal into digital signal and recurrence of storage .

其功能是通过放大、V／F转换、隔离和计数，把色谱仪的模拟输出信号转换成16位或24位的数字量信号（由程序选择）。

The card can convert analog output of chromatograph into 16 - or 24-bit digital signal after amplifying , V / F converting , isolating and counting .

本文还对汇流条控制器的模拟量输入通道、数字量输入通道、数字量输出通道进行了自检测设计，包括硬件BIT设计和软件实现方法。

The built-in test ( BIT ) design of hardware and software is also introduced in this dissertation . The BIT design consists of analog inputs , digital inputs and digital outputs .

本文根据数字量输入输出板的设计目标，对该板的原理性设计和输入输出的实现进行了分析，在原理图和PCB板的设计过程中，又充分考虑了系统的抗干扰能力；

According to the desired aim of the digital I / O board , we analyzed the design principle and realization of I / O.

而在SCADA系统中，对电网数据（包括模拟量和数字量）的采集是整个系统获得信息的来源。

Among SCADA system , data ( include both analog and digital ) sampling is the information source of the whole system .

本系统中的数字量由PLC控制，数字量主要控制真空系统、烧结炉和化学气相沉积炉中各通气管路中的开关量。

In the system the digital is controlled by PLC , digital is mainly used to control the switch data of pipeline in the vacuum system and metallurgical vessel and CVD vessel .

主CPU与控制对象间需要交换大量的模拟量和数字量信息，主CPU与其它CPU间也必须交换信息。

A large number of analogue & digital Quantities information need to be exchanged between main CPU and its control object , as well as between main CPU and other CPU .

对数字量调节阀的控制算法进行了研究，提出普通PID控制和仿人智能控制相结合的思想，并在实际工程应用过程中取得了较好的控制效果。

This paper makes some research of digital adjustable valve in the aspect of control theory , combine the common PID control and the apery intelligent control , and make great progress in actual process control .

硬件主要由六个模块构成：AD转换模块、DA转换模块、数字量输出接口模块、CPLD模块、单片机模块、串口通讯模块。

The hardware is constituted by six modules : AD conversion module , DA conversion module , data output interface module , CPLD module , MCU module , serial port communication module .

逻辑控制模块主要由CPU及MVB控制单元、数字量输入输出单元（DX）、电源控制单元和背板总线单元四部分组成。

The LLC is composed of CPU and MVB Control Unit , Digital Input and Output Unit , Power Control Unit , Backboard Bus Unit .

整个系统以DSP为核心，通过外扩存储器、时钟、模拟量采集、数字量控制、通讯等模块较好的实现了系统设计要求。

Consisting of DSP which is the core of the system , extra memory , analog signal collecting module , numerical signal controlling module and communicating module etc , the whole system carries out the tasks preferably .

系统利用嵌入式WebServer的Web浏览功能和cgi技术来实现授权的用户能在Internet任意一处应用浏览器查看温度采集情况和控制八路数字量和模拟量的输出。

System uses Web browsing capabilities of embedded Web Server , and cgi technology to realize to authorize user by Internet browser in any place to view a situation of temperature acquisition and the control of eight-way digital and analog output .

数字量信号发生器具有良好的人机对话接口，操作人员可以通过矩阵式键盘设定三种波形信号的参数，同时在LCD液晶显示器上很方便的观察参数。

This digital signal generator provides excellent man-machine conversation interface . Operators can set the parameters of three typical waveform signals through the matrix keyboard and conveniently observe the input parameters from the LCD .

氧化锌避雷器放电次数及泄露电阻电流、电容电流可用RS485接口以数字量输出。

Zinc oxide lightning arrester discharge frequency , leakage resistance current , and capacitive current can be output digitally with interface RS485 .

用圆感应同步器作为测角元件，采取DSP和CPLD进行角度解码和软件补偿，可以得到极高分辨率和测量精度的旋转轴系的角位移数字量。

Angles decrypted and software compensated with DSP and CPLD , the angular displacement of the rotating set of axes with high resolution and precision can be obtained by taking the circular inductive synchronizer as the angle meter .

为了减少开发专用液晶显示屏这一环节，而利用PIC单片机来实现在普通的显示屏上同步显示光指针和数字量的一种方法。

In order to avoid developing special LCD , a method of displaying light - pointer and digital synchronously on a common display with PIC MCU is discussed in this paper .

利用PCI总线技术实现数据的采集、分析与处理，实现模拟量的采集，模拟控制信号的输出，隔离数字量输入、输出。

The system implement data collection , analysis and treatment using PCI bus technology and is able to complete analog volume collection , output analog control signal , and complete isolated digital input and output . 4 .

采用汇编语言与C语言相结合的软件开发语言，以CCS软件为平台，利用模块化的设计思想，在明确各个模块实现的原理和方法的基础上对数字量采集模块进行软件设计。

Combining with assembly language and C language , use of CCS software platform and modular design , I did the software design for the digital signal collecting module based on the clear principles and method for each module .