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数转换     
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  digital conversion
     A New Way to Achieve Analogue digital Conversion in Monolithic Computer AT89C2051
     AT89C2051单片机完成模数转换的新方法
短句来源
     This paper utilizes the forward(AIN0) and reverse(AIN1) input functions of precise analogue comparator with the monolithic computer AT89C2051,and adds a few peripheral elements to achieve analogue digital conversion.
     利用AT89C2 0 5 1单片机内部精确模拟比较器的正向输入 (AIN0 )和反向输入 (AIN1) ,加以少量的外围元件实现模数转换
短句来源
     In Σ-Δ A/D converter, analog to digital conversion is carried out by comparing the input signal to a reference voltage.
     Σ-ΔA/D转换器需要一个基准电压作为参照进行模/数转换,因此,基准电压上的任何变化都会直接影响到A/D转换的结果。
短句来源
     It uses 16 bits A/D chip-TLC4541 with high precision as core chip of acquisition module to complete analog to digital conversion.
     采用了高精度16位A/D转换器TLC4541作为采集模块的核心芯片来完成模数转换;
短句来源
     Effect of sampling process and analog/digital conversion on records as well as obtaining of true ground motion ——the basic principle of digital signal processing used in seismology and practical examples (3)
     采样过程和模数转换对记录的影响及“真实地面运动”获取——地震学上用的数字信号处理的基本原理和实例(讲座3)
短句来源
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  d conversion
     THE A/D CONVERSION TECHNIQUE AND METHOD OF FUNCTION GENERATION WITH MB 8861 Microprocessor
     MB8861微处理机模数转换技术与函数产生方法
短句来源
     This paper deals with the single dimensional magnet rotor numerical control system with TMS320C542 type Digital Signal Processor(DSP) as the centerpiece,and mainly describes A/D conversion,PWM circuit as well as DSP and 8031 principal and subordinate link.
     讨论了以 TMS3 2 0 C542型数字信号处理器 ( DSP)为核心建立的单自由度磁浮主轴数字控制系统 ,着重叙述了模数转换 ( A/ D)、PWM产生电路以及 DSP与 80 3 1的主从连接。
短句来源
     Interface of A/D Conversion AD7734 and DSP Chip
     模数转换芯片AD7734与DSP芯片的接口
短句来源
     To improve the compensation performance of active power filter (APF), taking the direct compensatory component detection method of three phase system as theoretical basis and based on field programmable gate array (FPGA) device and high speed A/D conversion, a detecting method of compensation component of harmonic currents in digital APF is proposed.
     为提高有源电力滤波器(Active Power Filter,APF)的补偿性能,以理想传输量分离法为理论基础,提出了一种基于现场可编程逻辑阵列(Field Programmable Gate Array,FPGA)器件和快速模/数转换(A/D)的数字式有源电力滤波技术中谐波电流补偿分量的检测方法。
短句来源
     The Application of AD6644 on Tri-channel A/D Conversion System
     AD6644在多通道模数转换系统中的应用
短句来源
更多       
  digit conversion
     The digitalization technology of the earthquake observation is studied systematically, including 24 bits Z! - A analogy to digit conversion, function interface design of the embedded PC module, the integrated circuits realization using the FPGA technique and the GPS application.
     较为系统地研究了地震数字化技术,包括高精度24位模数转换技术PC104嵌入式模块的功能接口技术板级数字逻辑电路的FPGA集成设计技术以及GPS定位信息和时间信息提取等,并综合应用于24位地震数据采集器的设计实践中。
短句来源
     There are two kinds of analog digit conversion methods, i.e. feedback comparison and integrating. Bat the quantized errors of A/D conversion are not always equal to ±LSB/2, while the quantized error Δ U N of double integrating conversion comes from the count to clock pulse, and -1≤ Δ U N≤1 . This result can be verified by experiments.
     模数转换有反馈比较式和积分式.但是,A/D转换的量化误差不都是±LSB/2.双积分转换的量化误差ΔUN来源于对时钟脉冲的计数,且为-1≤ΔUN≤1,已为实验所证实
短句来源
  number conversion
     CT number conversion method for Monte Carlo dose calculations in radiotherapy
     用于Monte Carlo临床剂量计算的CT数转换方法
短句来源

 

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      digital conversion
    These systems are multichannel due to the self-synchronization method of the recovered signals of the sensors in the ground part with a 0.1% total reception/transmission error determined by the analog-to-digital conversion.
          
    The results of using an algorithmic macromodel of an analog-to-digital converter (ADC) of the pipelined type during the development of intellectual-property blocks for analog-to-digital conversion are presented.
          
    They were subjected to analog-to-digital conversion.
          
    Analogue-to-digital conversion of the blood pressure was used to determine systolic and diastolic blood pressure and heart rate every second.
          
    Analogue-to-digital conversion of the blood pressure was used to determine systolic, diastolic and mean blood pressure and heart rate every second.
          
    更多          
      d conversion
    The signal of the mass spectrometer, after A/D conversion, is collected in an on-line multi channel analyser which also allows semi-automatic integration in order to increase further the sensitivity of the method.
          
    The real-time processing system of CTSN performs following: A/D conversion; automatic event detection; event data saving; automatic measure of P and S arrivals; event location and print out the calculated results.
          
    In perturbed quantization, the sender hides data while processing the cover object with an information-reducing operation that involves quantization, such as lossy compression, downsampling, or A/D conversion.
          
    To realize a high-speed and highthroughput system, optical A/D conversion has attracted much attention.
          
    A/D conversion generally consists of three processes of sampling, quantization and coding.
          
    更多          
      number conversion
    Furthermore, since the binary input set is a subset of the redundant digit set, no binary-to-redundant number conversion is necessary at the input of the divider and square-root operators.
          
    Therefore, 625/25 systems need only to perform a picture rate conversion, while NTSC systems need to perform only a line-number conversion.
          


    This paper discusses an advanced dual-slope integration A/D conversion technique-dual-slope integration A/D conversion with self-correcting zero. In this advanced A/D conversion system, since the correcting voltage to compensate drifts is rapeatedly stored by the capacitor, the specifications of offset voltage, offset current and drift with the used D.C. operational amplifiers will be depressed effectively.In addition, this paper states the logical system design of this dual-slope integration A/D conversion...

    This paper discusses an advanced dual-slope integration A/D conversion technique-dual-slope integration A/D conversion with self-correcting zero. In this advanced A/D conversion system, since the correcting voltage to compensate drifts is rapeatedly stored by the capacitor, the specifications of offset voltage, offset current and drift with the used D.C. operational amplifiers will be depressed effectively.In addition, this paper states the logical system design of this dual-slope integration A/D conversion with self-correcting zero.

    本文分析了一种改进型的双积分式模/数转换技术——自动校零的双积分式模/数转换。这种改进型的模/数转换系统中,由于靠电容周期性地记忆为补偿零漂的校零电压,所以能有效地降低对所采用的直流运算放大器的失调与漂移指标要求。 其次,本文还介绍了这种自动校零的双积分式模/数转换系统的逻辑设计方法。

    This article suggests a new plan for a lowdrift input amplifer which is suitable for DVM, DMM and DPM. Based upon the feature of intermittent sampling of the dual ramp A/D, this amplifer uses A. C. coupling, so that it can effectivly overcome the tendency to drift. The circuit is simple and easy to adjust; the manufacturing process will also be simplifed.

    本文提出一种适用于双积分式数字多用表、电压表及面板表的低漂移输入放大器的新方案。基于双积分式模/数转换间歇采样的特点,这种放大器采用了交流耦合,因而有效地抑制了漂移,并且线路简单,制作调试方便。

    :

    象片坐标数字化器是数控测图仪的重要组成部分,通过立体观测从航空象片搜集地形起伏信息,实现模——数转换。本文详细介绍了由小型工业计算机直接控制的第二代象片坐标数字化器的设计思想,航测公式,硬件,软件及其应用。

     
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