模数转换 a/d analogue to digital converter; adc analog-to-digital conversion; analog digital conversion; analog to digital; analog-digital-conversion; analogtodigital conversion; analogtodigital element; analogue to digital conversion
模数转换器 a/d analog to digital converter (conversion); a/dc analog to digital converter (conversion); ad converter; adc analog-digital converter; adc analog-to-digital conventer; analog converter; analog-to-digital (a-to-d) converter; analog-to-digital conversion, adc; analog-to-digital converter adc; analogtodigital converter; qadc
二进-十进制数转换 binary-decimal number conversion; binary-decimalnumberconversion
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The synchro / resolver signal transmit & receive card is the most important and difficult part which used special a / d and d / a ( axis angle converter ) to make conversion between the analog singnals related to angle and its digital counterpart , thus solve the issue of stimulation and test of synchro / resolver signal , improved the test precision and automatic degree 其中同步器卡的开发是难点和重点,它采用特殊的数/模、模/数转换器件?轴角转换器,实现了角位-数字信号相互间的直接转换,解决了随动系统性能检测中三相同步器信号激励与同步器信号/分解器信号数字化检测问题,有效提高了系统的自动化程度和检测精度。
The paper is completed research of measurement and control system based on dsp under technology . the paper is designed a card with the data - collection conversion and control by adopting mainly tms320f240 among the dsps as kernel processor , with peripheric a / d and d / a circuit epm7128 ' s decode and latch circuit and isa interface circuit 本论文主要是采用数字信号处理器dsp中的tms320f240作为核心处理器,结合外部的模数转换和数模转换电路、可编程逻辑器件epm7128的地址译码和锁存电路和isa接口电路,设计了集采集、转换、控制于一身的isa卡。
By way of analizing measure management system of computerized dynamic orbital weighing apparatus , using windows operation system with graphic interface , using delphi7 and oracle as development tool , selecting the measure form of single - table steering frame , the followings have been introduced mainly ih the thesis : weighing sensor , mold / data converter , hardware and software systems . it summarizes the general characteristics of measure system and specific measures adopted in order to secure the accuracy of systems 本文通过对微机动态轨道衡计量管理系统的分析,使用图形化界面的windows操作系统,以delphi7和oracle作为开发工具,并选用了单台面转向架计量方式,从称重传感器、模数转换器、硬件系统及软件系统,均作了主要介绍,总结了计量系统总的特点以及为了保证系统精度所采取的具体措施。
In the time - domain , based on the principle of random sampling of dso . two way ( " time amplifing in dual slope integral " and " time - voltage convert " ) are implemented to measure the time between the system triger and writing clock . thus random sampling interpolate can be done to measure repeated signal in high frequency with the a / d convert and controller which frequency are lower 在时域,根据数字示波器随机取样原理,用两种方法(双斜率积分时间放大测量方法和时间? ?电压转换测量方法)测量数字示波器系统触发和采样写时钟间时间间隔,用低速a / d转换器及控制器进行模?数转换和控制,以此进行随机取样内插,从而实现了对高频率重复信号的测量。
The bottleneck of hybrid filter banks adc system is that it cannot sample directly higher radio frequency signal because of lower analog input bandwidth of its adc . in order to remove it , a kind of downsampler model based on nyquist and bandpass sampling theorem is presented , analyzed and proved in time and frequency domain , in addition a downsampler is designed according to the model . on the basis of hybrid filter banks adc system , a class of high speed hybrid filter banks adc system is proposed 针对混合滤波器组adc系统因其adc模拟输入带宽低而不能对频率较高的射频模拟信号进行模/数转换的瓶颈,作者提出了一种基于nyquist采样定理和带通采样定理的抽取器数学模型,对该数学模型进行了时域、频域的分析证明后,设计了一种基于该数学模型的sha抽取器,进而在混合滤波器组adc系统的基础上,提出了高速混合滤波器组adc系统。
Then this paper deals with the design and realization of the smart - antenna receiver system architecture . and the receiver is divided into four modules , including rf front - end module | , if demodulation module , analog to digital conversion module and frequency synthesis module 随后在此基础上,对应用于w - cdma系统智能天线接收机进行了系统设计分析,并给出了实现方案,主要包括射频前端电路模块、中频解调电路模块,参考频率合成电路模块和数模、模数转换电路模块四部分的设计与实现。