模拟转换

没有必要把模拟转换为数字数据。

No conversion from analogue to digital data is needed .

A/D数据同步采集是将整个网络中的传感器信号由模拟转换为数字，这种转换应使各个通道数据的相位一致性在一定的误差范围内。

The data acquisition in the sensor networks must make sure the minimal phase errors between different channels .

针对过去文献中存在的问题，提出了按波形的不同来剔除不同的滑闪火花起始电压的模拟转换方法。

Moreover , a new method for excluding sur-face spark inception voltage according to various wave shapes is introduced .

研究了示波器的信号模拟转换的过程，改进了模拟通道的工作的兼容性和稳定性。

I researched the process of the conversion of analog signals in the DSO and enhanced the compatibility and the stability of the channels .

实测了HC4052双通道四选一模拟转换开关集成电路的导通电阻。

The conduct-resistance are real measured which in the HC 4052 double-passage in one case out of four analogue ( change ) over switch integrated circuit .

数字电视迎来里程碑之际，距离2009年2月联邦政府的最后期限仅有1年多的时间，届时，美国各家电视广播公司必须将电视传送信号从模拟转换为数字。

The digital TV milestone comes just over a year before the February 2009 federal deadline for US broadcasters to switch from analogue to digital broadcasting .

为了进行强度分析，文中在剪切力的获取上采用了模拟转换方法，从而解决了在剪切机上不能直接得到剪切力的困难。

In order to make strength analysis , analog conversion method was used to obtain the shearing force , which could not be determined on the shearing machine directly .

每一级电路计算完它的模拟转换误差后，马上就可以对下一个输入数据进行计算，提高了随机数产生速度。

After calculating the analog to digital convert error , each stage processes the next stage input signal immediately , and this increases the value of output signal flow speed .

基于网络的卫生模拟转换门户网站作为医疗信息的数据接口，通过图形形态组件同步查看上述信息，与通过语音形态组件输入的语音构成互动机制。

A simulated transformed web-based health portal is chosen as the interface to health information data . In order to synchronise viewing these web portals via the graphical modality with speech from the voice modality an interaction mechanism was implemented .

结合实际系统的调试，介绍两种利用单片机和可编程间隔定时器8254及单片机和多路模拟转换开关CC4052组成的测量电路及工作原理。

Combined with the commissioning of practical system , two measuring circuits and their working principles are introduced . One measuring circuit consists of single-chip microprocessor and program-mable timer 8254 and the other consists of single-chip microcomputer and multi-channel analog converting switch CC 4052 .

GPS天线信号到射频前端变换后的中频信号，再经模拟数字转换，便可得捕获与跟踪的原始信号。

The raw acquisition & tracking signal is extracted by down-conversion from RF to IF , through analog to digital conversion .

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 .

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 .

数据采集卡是一种把外界模拟信号转换成数字信号，并把数字信号输入到计算机系统的一种AD接口卡。

Data acquisition card is the AD interface card , which converts the analogy signal to the digital signal , and transfers the digital signal to the computer .

ADC（模数转换器）将模拟信号转换成DSP（数字信号处理器）可以处理的数字信号。

ADC ( analog-to-digital Converter ) converts the analog signal into digital signal , which can be processed by DSP ( digital signal processor ) .

数字闭环光纤陀螺中，采用AD转换器将模拟信号转换为数字信号，AD转换中的量化噪声将直接影响光纤陀螺的零漂指标。

In digital closed-loop fiber optic gyroscope , AD converter is used to translate analog input into digital signal . Quantization noise in AD conversion will influence bias stability of FOG .

采用ISP可编程模拟器件对接收到的正弦信号进行放大、滤波，通过A/D转换器将模拟信号转换为数字信号以及MCU控制处理，通过串行口送至PC机进行人机交互。

It achieves magnifier and filter function by ISP chip . A / D switcher transfer analog signal into digital signal with MCU control .

模数转换器（ADC）是把模拟信号转换成为数字信号的专用器件，广泛地应用于各种数据采集系统中。

Analog to Digital Converter is special equipment which can convert the analog signal to the digital signal , and widely applied in kinds of digital acquisition systems .

利用两对激光位移传感器采集厚度数据，PLC将模拟信号转换为数字信号后发送给上位机，上位机计算得到实际厚度值。

The system collects thickness data by two pairs of laser displacement sensors . PLC converts the analog signal to digital signal and sends it to the upper-computer , and the upper-computer gets the actual value .

为了实现自动实时的数字信号采集，本系统利用了PCI数据采集卡将压力传感器的模拟信号转换成数字信号，然后利用上层处理软件进行脉搏波的处理、分析与显示。

In order to implement the real-time digital signal acquisition , our system utilizes PCI data collecting card to convert analog pressure data to the digital data , then the PC software analyses and displays the pulse signal .

模数转换器（ADC）是负责将模拟信号转换为数字信号的器件，在现今的大规模集成电路特别是混合信号集成电路中，得到了越来越广泛的应用。

In modern VLSI ( Very Large Scale Integrated Circuits ), especially in mixed signal systems , Analog-to-Digital converter ( ADC ), which is responsible for converting analog signal to digital signal , finds more and more applications .

用SAA7111A设计模拟视频转换接口

Design of Analog Video Conversion Interface

基于sigma-delta（∑△）调制技术的过采样带通模数转换器可以可靠地把射频接收器中窄带中频模拟信号转换为数字信号。

Oversampled bandpass A / D converters based on sigma-delta ( @ ) modulation can be used to robustly digitize the narrowband intermediate frequency signals that arise in radios and cellular systems .

信号采集部分通过霍尔传感器将信号导出，再通过调理电路的调节之后，将信号传递给A/D转换电路，A/D转换电路将模拟信号转换成数字信号，数字信号再经过DSP处理之后通过串口传到PC机上。

We can output the signal through the Hall Sensor first , and then use the conditioning circuits to process it . We can convert analog signals into digital signals by A / D conversion circuit . The digital signals are transferred into PC through serial port after DSP .

本装置以数字处理芯片TMS320F206为CPU，能完成模拟量转换、数据采集、数据处理与计算、人机对话和显示等任务，实现了对电能质量的监测与评估。

TMS320F206 ( Digital Signal Processing ) is usded in the device as CPU . It can perform the following duties : A / D transformation , data sampling , data processing , man-machine conversation , displaying .

其基本原理是：由电极从胸前取得心电信号，经前置放大电路放大、滤波后，通过ADC0809将模拟信号转换成数字信号送入8031进行计算处理。

Fundamental principle : Heart electricity from chest electrodes amplified circuit ( to amplify ) filter ADC0809 ( to transform analog signals into digital signals ) 8031 ( to calculate and process ) .

采用高分子多孔小球GDX-403为色谱固定相，利用12位A/D转换卡把色谱模拟信号转换成数字信号并利用色谱工作站对微量水份实现自动测定。

An auto-detecting method for trace water was developed . This method made use of porous polymer beads GDX-403 as chromatographic stationary phase , a 12 bit A / D transformer to transform module signal to digital signal for chromatograph working station .

而数模转换器是通信系统中数字和模拟信号转换的重要部件。

And digital-to-analog converter is important member of the communication system .

它具有将模拟信号转换成数字信号的功能。

It can translate analog signal into digital signal .

无论是信号处理，还是图像处理，首先要把模拟信号转换成数字信号，如何转换就涉及到采样问题，而框架理论是研究非均匀采样问题的一个重要工具。

The frame theory is an important tool to st ud y non-uniform sampling problem .