查询词典 digital signals

this paper introduces a lossless detected circuit system.firstly,system gathers slender infrared signal with transducer,then amplifies them with low noise.through voltage comparator circuit,transforming simulation objection signals to digital signals.finally,transforming transport landscape orientation and portrait to single chip processing.in design of pcb,the amplifying of quadruplet signal,filter,voltage comparator decree and and logic function are manufactured in one board.if the diameter of workpiece is long,it can add multiple the number of transducer of four,to wide its range of practice,disposing circuit only need one module.

摘 要：介绍了一种无损检测的电路系统。系统首先利用传感器采集到微弱的缺陷信号，再将缺陷信号进行低噪声放大，然后通过电压比较判决电路将模拟缺陷信号变换成数字信号，最终将横、纵两路的输出信号送至单片机处理。在pcb设计中，将四路信号的放大、滤波、电压判决以及与逻辑功能做在一块板上，若被检测工件的直径较大，可以将传感器的个数以四的倍数增加，处理电路只需增加一个模块。

The signals from sensor are converted into digital signals for the sequent processing.

线圈测得的磁场信号经过前端处理转化为数字信号。

By generating all essential clock signals for MPEG playback, and converting digital video inputs to either NTSC or PAL video signals, the SP232EEN-L is an essential component of any low-cost solution for video-CD playback machines.

通过产生所有必要的MPEG播放时钟信号，并转换为数字视频输入或NTSC或PAL视频信号，SP232EEN - L是一个任何视频光盘播放机的低成本解决方案的重要组成部分。

The remote control and data acquisition system of GST-1 three-axis turntable is designed and manufactured. It can not only control all the work states of the turntable, but acquisite 6 channels digital signals and 6 channels analog signals as well. The system is powerful and has high accuracy of data acquisition. It is the important guarantee to realize automatical test of intertial sensor and system.

设计和参与研制了GST-1型三轴转台计算机远控及数据采集系统，并进行了实际调试，该系统不仅可以程序控制转台的所有工作状态，而且能够同时采集被测对象的六路数字信号和六路模拟信号，功能强大，数据采集精度高，是实现惯性仪表和惯性系统自动化测试的重要保障。

The 5mV of the audio signal which comes from the microphone to linear amplificated by the audio signals amplifier,then mixes with music signals from other sound sources(eg:the tape 、CD) by the hybird amplifier . By the control of the digital volume controller the mixed signal ,then amplificated again by the preamplifier,when integrated power amplifier for idling time realizes the signal enlargement factor respectively is 10、100、1000 times;moreover is capable of delivering 3V of output to a 600%26Omega; load. the amplificate signal makes the loudhailer work at last.

该音频信号放大器能够将来自话筒5mV的音频信号进行线性放大，然后和来自其他音源的音乐信号通过混合放大器来混合，混合后的信号经数字音量控制器对高低频的增益进行提升与衰减，再通过前置放大器放大，当集成功率放大器为空载的时候实现信号的放大倍数分别为10、100、1000倍；另外再实现当负载为600%26Omega；的时候，输出幅度为3V，最后经扬声器发出悦耳的声音。

Firstly it introduces relevant technical developments and trends, the task background and significance of the study, then analyzes hardware circuit of using image sensor as images collected, and utilizes the SAA7113 chip to deal with video image beforehand, SAA7113 lets the output of standard digital video signals to storage in FIFO memory, and decodes clock signals, Highlighted microprocessor control external circuit design of false coin and counting, and DSP control external circuit design, such as memory expand ect;Finally analyses CPLD as logic controller to control the logic and scheduling of some part ,and gives the undee emluator of some logic circuit.

文章首先阐述人民币智能分捡器相关技术的发展状况、发展趋势以及课题背景与研究意义；然后设计了利用图像传感器采集人民币图像输出模拟视频信号的硬件电路，以及利用视频解码芯片(SAA7113)对模拟视频图像进行预处理，SAA7113输出的标准数字视频信号存入FIFO存储器，同时还解码输出场、行同步信号、像素时钟信号送入CPLD等部分电路；重点设计了单片机控制验钞、点钞等外围电路，以及DSP控制的外围电路，如存储器的扩展等部分；最后完成CPLD对部分器件的逻辑和时序控制设计，并对逻辑电路的功能进行仿真，仿真结果令人满意。

Hybrid computer: A digital computer that processes analog signals which have been converted into digital form.

混合电脑：把模拟讯号转为数字形式处理的数字电脑。

With the modern electronic measurement technology that can produce all kinds of signals in the digital waveform signal generator application of more and more, this paper, a DDS as the basic unit of the digital shift, I believe the generator design .

摘 要：随着现代电子测量技术的发展，能够产生各种波形信号的数字式信号发生器的应用越来越广泛，本文介绍了一种以DDS为基本单元的数字移相信号发生器的设计方法。

By analyzing present methods for digital channeling,a novel digital channelizing method based on polyphase filter technique is demonstrated,which is more suitable for processing discrete real signals.

为处理双通道采样带来的冗余数据并进一步解决实时性问题，推导出了一种更实用的基于实信号多相滤波的数字信道化方法。

Broadband Digital Cross-connect System. B-DCS is a generic term for an electronic digital cross-connect system capable of cross-connecting signals at or above the DS3 rate.

宽带数字交叉连接系统。B-DCS是一种有关电子数字交叉连接系统的专业术语，能够在大于等于DS3速率上交叉连接信号。

Liapunov—Schmidt method is one of the most important method in the bifurcation theory.

Liapunov—Schmidt方法是分叉理论的最重要方法之一。

Be courteous -- even when people are most discourteous to you .

要有礼貌──即使当別人对你最不礼貌的时候。