模数转换

然后选用线阵CCD作为系统的探测元件，通过搭建硬件采集模块实现了CCD模拟前端处理、A/D模数转换等功能。

Then choose linear CCD as the detecting element of system carry out the CCD analog front-end processing , A / D analog-to-digital conversion through building out hardware acquisition module .

全光模数转换利用光子技术实现对模拟电信号的采样及量化，可以在实现超高采样率的同时，得到高量化精度，是突破电子ADC瓶颈的有效手段。

All optical analog-to-digital conversion makes use of photonic technologies to sample and quantize the electrical analog signal , which has the potential to realize high sampling rate and high resolution at the same time . It is a promising technology to break through the bottleneck of electronic ADCs .

设计了一种新型的8位Flash模数转换电路结构。

A new 8-bit Flash ADC structure is adopted .

本文具有对一次仪表转换系数进行校准的功能，温度补偿及模数转换电路设计方法独特，只用一块运算放大器与一块单片模数转换电路完成了pH转换功能。

In this paper has had a function for calibrate to the conversion coefficient of primary instrument .

基于微机并口技术及CPLD技术的新型模数转换接口

A Nwe Analog-to-Digital Converter based on Parallel Port and CPLD Technique

经过调理后的模拟信号送入ARM所带的A/D转换器进行模数转换。

Analog signal after conditioning is putted into the A / D converter carried by the CPU for analog-digital conversion .

系统硬件包括脉搏传感器，信号调理，模数转换，USB通信等。

System hardware includes pulse sensor , signal conditioning , analog-digital conversion , USB communications and so on .

模数转换时期HFC综合信息网的建设与整改

The Construction and Reform of HFC Integrated Information Network in Mould Change Period

使用CCD作为图像采集的基础元件，图像采集的数据通过模数转换、滤除杂讯得到要分析的图像。

The data base of CCD became to image that has been analysis through A / D transfer and remove noise .

给出了高速模数转换及USB接口的电路原理简图，并详细介绍了实现USB数据传输的上、下位机的程序设计。

Design of the host and slave computer procedure which carry out USB data transmission is also presented in detail .

故障诊断硬件主要包括信号调理、模数转换、DSP及其外部接口、电源管理等组成部分。

The fault diagnosis hardware includes for five parts : signal adjustment and communication interface , A / D , DSP , power manage .

分析了电路功能及参数，完成了CCD驱动电路和模数转换模块。

We analyze the function and parameters of the circuit , and design the CCD driving circuit and A / D module .

系统硬件部分着重介绍了AD／DA数模、模数转换，语音DMA传输，存储器配置，USB总线接口访问等部分。

The AD / DA conversion , DMA transmission , system memory allocation and USB bus interface accessing are introduced .

CMOS图像传感器是一种把像素感光阵列、放大器和模数转换等模拟功能模块及时序控制电路集成在一起的芯片系统。

CMOS image sensor is a chip system , which integrated pixel array , amplifiers , ADC and timing controlling circuits .

系统包括线阵CCD传感器及其控制模块、模数转换模块、驱动和控制模块、运算处理模块以及通信模块。

Platform includes linear CCD sensor and control module , ADC module , the driver and control module , processing module and communication modules .

其次，AD模数转换模块将模拟信号转换成数字信号后送入系统控制模块进行数据封装。

Secondly , AD analog-to digital conversion module converts analog signals into digital signals and sends these digital signals into system control module for data encapsulation .

2，使用高速模数转换芯片（ADC）进行高速采样；

2 , use the high speed Analog to Digital Converters ( ADC ) to sample at high speed ;

利用添加PLC的特殊功能模块实现温度和转速的模数转换以及转速控制的数模转换，从而可以进行准确、可靠地实时监控。

Add extension modules to PLC to achieve A / D and D / A transform , which can realize real time supervisory controlling accurately and reliably .

我们利用其丰富的内部资源，实现了多通道选择、模数转换、数据处理和USB数据传输。

We use the wealth of internal resources to achieve a multi-channel selection , analog-digital conversion , data processing , and USB data transmission .

系统采用sigma-delta二阶调制器结构对信号进行模数转换。

A Second-order sigma-delta modulator is used for ADC in this system .

给出了示波器前置程控放大电路、高速模数转换电路和USB通信模块的设计方案和原理框图。

The design project and principle diagrams of program-controlled preamplifier , high-speed A / D converter circuit and communication block of USB are given at length .

在分析模数转换中各种采样方法后，采用基于顺序等效采样的方法完成ADC系统的设计。

On the analysis of the basic ways of sampling methods , the sequence-equivalent sampling method is used in this ADC system .

在很多应用中，模数转换是性价比的决定因素，因此对ADC元件功能的优化及其重要。

In many apply , cost-effective is the crucial factor , so the optimization of the performance of ADC is the most important .

这种模数转换太神奇了，以至于坐在周围的人都问我如何在iPad上复制这种体验。

The analog-to-digital translation was uncanny enough that people sitting around me asked me how to mimic the experience on an iPad .

DSP系统是一种新型的快速数字处理系统，处理的信号是数字信号，模数转换是DSP必需的外围电路。

The digital signal processor ( DSP ) is a new fast process system , which processes digital signals , A / D conversion is a peripheral circuit needed by DSP .

接着，对∑-△型光adc的信号波形图和对任意波形模拟输入信号的模数转换进行了仿真分析。

The signal waveform diagrams of the whole system and the analog to digital conversion of arbitrary waveform input signal are simulated and analyzed .

DSP在电流互感器中的作用包括对光纤接收器接收到的数据进行处理、显示，同时还要提供高压端的模数转换所需时序，控制其转换。

The function of DSP including that processing and display the data received from the Optical Receiver , offering the timing required for analog-digital conversion in high-voltage side to control the conversion .

风速信号经过风速传感器后，将得到的模拟信号经过模数转换输入给DSP系统。

Through wind speed sensor , the wind speed signal is analog , witch is input to ADC , and in witch the digital signal that is given to DSP is translated .

针对上述问题，本文又提出并实现了使用高速ADC过采样，并利用硬件数字滤波模块提高信噪比的模数转换方案。

To address this problem , this paper has proposed and implements a new ADC system based on over-sampling and matching hardware digital filter module .

二是将接收到的模拟信号经模数转换和DFT（傅里叶变换）后解调为原始数字信号传给网络协议模块。

The received analog signal demodulates the original digital signal transmitting network protocol module after the analog-digital conversion and DFT ( Fourier transform ) .