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公开(公告)号:CN107453754A
公开(公告)日:2017-12-08
申请号:CN201710519826.2
申请日:2017-06-30
Applicant: 南京理工大学
CPC classification number: H03M1/08 , H03M1/124 , H03M2201/192 , H03M2201/646
Abstract: 本发明公开了一种冲击波超压信号调理系统,包括压力传感器、微弱信号放大模块和ADC信号调理模块;所述压力传感器,用以获取冲击波超压信号,冲击波超压信号作用于压力传感器上后,压力传感器产生相应的电荷;所述微弱信号放大模块,用以获取压力传感器产生的电荷信号,将电荷信号变成电压信号,且可通过软件编程实现不同的放大倍数;所述ADC信号调理模块,用以将微弱信号放大模块输出的正负电压信号转变为波形不变的正电压信号,并滤除其高频分量,减小噪声干扰;本发明的冲击波超压信号调理系统使得传感器元件和信号调理电路整体体积缩小到几毫米量级,提高信噪比的同时给测试技术带来极大地方便和应用空间。
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公开(公告)号:KR101833856B1
公开(公告)日:2018-03-05
申请号:KR1020170050260
申请日:2017-04-19
Applicant: 울산과학기술원
CPC classification number: G01R27/00 , H03F3/38 , H03M3/04 , H03M2201/192 , H03M2201/646
Abstract: 본발명은차동모드변환장치및 이를이용한계측장치에관한것으로, 저항값을측정하기위한타겟저항; 상기타겟저항을거쳐제공되는입력전압을단일모드(single-ended mode)로입력받아기준전압을중심으로서로대칭되는구형파형태의제1 차동전압및 제2 차동전압으로변환하여출력하는입력모드변환부; 상기제1 차동전압및 상기제2 차동전압을입력받아상기기준전압을중심으로서로대칭되는직류형태의제1 초핑전압및 제2 초핑전압을출력하는초퍼부; 상기제1 초핑전압및 상기제2 초핑전압을입력받아노이즈와오프셋을최소화시켜제1 출력전압및 제2 출력전압을출력하는저역통과필터부; 및상기제1 출력전압및 상기제2 출력전압을아날로그-디지털변환하여상기타겟저항의저항값에대응하는디지털신호를출력하는아날로그-디지털변환부를포함할수 있다.
Abstract translation: 差模变换装置和测量装置技术领域本发明涉及差模变换装置和使用了该差模变换装置的测量装置。 一种输入模式转换器,用于以单端模式接收通过目标电阻器提供的输入电压,并且将第一和第二差分电压转换为围绕参考电压彼此对称的第一差分电压和第二差分电压, 。 斩波器,接收第一差分电压和第二差分电压,并且以DC参考电压相互对称的方式输出DC形式的第一斩波电压和第二斩波电压; 低通滤波器单元,接收第一斩波电压和第二斩波电压,并通过最小化噪声和偏移来输出第一输出电压和第二输出电压; 以及模数转换器,将第一输出电压和第二输出电压模数转换成数字信号并输出与目标电阻器的电阻值对应的数字信号。
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公开(公告)号:KR1020090027416A
公开(公告)日:2009-03-17
申请号:KR1020070092618
申请日:2007-09-12
Applicant: 지씨티 세미컨덕터 인코포레이티드 , 재단법인서울대학교산학협력재단
IPC: H03M3/02
CPC classification number: H03M3/494 , H03M1/12 , H03M3/394 , H03M2201/61 , H03M2201/646
Abstract: A loop filter for a continuous time sigma delta analog to digital converter is provided to improve a NTF(Noise Transfer Function) property of a continuous time sigma delta analog to digital converter by using a sallen and key filter element. A loop filter includes an input terminal(1110) and an analog active filter(1120). An input signal(X2(t)) is inputted in the input terminal, and indicates at least a part of a digital output signal(y(n)) outputted from a sigma delta analog to digital converter. The analog active filter is connected to the input terminal, and includes M active devices(1122, 1124, 1126) and an output terminal(1128). M active devices provide a power gain. An output signal(I5(t)) is outputted from the output terminal, and indicates a total signal outputted from M active devices. The analog active filter performs N(N>M) integration.
Abstract translation: 提供了一种用于连续时间Σ-Δ模数转换器的环路滤波器,以通过使用sallen和键滤波器元件来提高连续时间Σ-Δ模数转换器的NTF(噪声传递函数)特性。 环路滤波器包括输入端子(1110)和模拟有源滤波器(1120)。 输入信号(X2(t))被输入到输入端子,并且指示从Σ-Δ模数转换器输出的数字输出信号(y(n))的至少一部分。 模拟有源滤波器连接到输入端,并且包括M个有源器件(1122,1124,1126)和一个输出端子(1128)。 M个有源器件提供功率增益。 从输出端输出输出信号(I5(t)),表示从M个有源装置输出的总信号。 模拟有源滤波器进行N(N> M)整合。
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公开(公告)号:KR1020180025729A
公开(公告)日:2018-03-09
申请号:KR1020160112795
申请日:2016-09-01
Applicant: 주식회사 이즈와이솔루션
Inventor: 여상국
CPC classification number: H03H17/0219 , G10K11/002 , H03H7/0115 , H03M1/0854 , H03M2201/646
Abstract: 본발명의특징에따르면, 음향장치(10)에구비된프리앰프(11)의출력측에회로연결되어디지털코딩(DAC)된 PCM 음향신호를입력받는신호입력단(110); 상기신호입력단(110)을통해입력된 PCM 음향신호를 1차측으로입력받으며상호유도작용에의해 1차측에인가된 PCM 음향신호가 2차측으로유기되어임피던스를정합시키면서 PCM 음향신호에포함된고주파성분의 PCM 노이즈를필터링하는매칭트랜스(120); 및상기매칭트랜스(120)로부터필터링된 PCM 음향신호를입력받아상기음향장치(10)에구비된파워앰프(12)의입력측으로출력하는신호출력단(130);을포함하는 PCM 노이즈필터링회로가제공된다.
Abstract translation: 根据本发明的一个特征,所述声学装置10是连接到非Eguzemodo前置放大器11数字编码(DAC),用于接收所述的PCM声音信号的信号输入端子110的输出侧的电路; 所述信号接收输入,用于通过输入端子110到初级侧PCM声音信号输入端的是信号通过相互感应作用施加到初级侧的PCM声音有机到次级侧,同时匹配包含在PCM声音信号的高频成分的阻抗 匹配变压器120,用于对输入信号的PCM噪声进行滤波; 提供PCM噪声滤波电路,包括;以及用于输出到所述功率放大器的声学装置10 Eguzemodo比率的输入侧从匹配变压器120接收到的PCM声音信号滤波器的信号输出端130(12), 是的。
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公开(公告)号:KR1020000060446A
公开(公告)日:2000-10-16
申请号:KR1019990008757
申请日:1999-03-16
Applicant: 김 수 원
IPC: H03M1/66
CPC classification number: H03M3/50 , H03M2201/646
Abstract: PURPOSE: A sigma-delta digital-to-analog converter is provided to improve a performance of the converter by forming a single-ended signal path, lowering a signal-to-noise ratio of a post-filter, as a fully-differential path. CONSTITUTION: A sigma-delta digital-to-analog converter comprises a digital interpolator(100), a digital noise modulator(200), and a quasi-digital IFIR post-filter(300). The digital interpolator(100) functions to increase a frequency by a sampling rate and to attenuate a spectrum image generated according to an increase of the frequency. The digital noise modulator(200) is connected to an output of the digital interpolator(100), and performs a modulation operation of pushing a noise to an external band so as to have a low quantization noise in the band. The quasi-digital IFIR post-filter(300) is connected to an output of the digital noise modulator(200), and performs a low-pass filtering operation of attenuating a noise of an external band.
Abstract translation: 目的:提供一个Σ-Δ数模转换器,通过形成一个单端信号路径,降低后置滤波器的信噪比来提高转换器的性能,作为全差分路径 。 构成:Σ-Δ数模转换器包括数字内插器(100),数字噪声调制器(200)和准数字IFIR后置滤波器(300)。 数字内插器(100)用于以频率提高采样率并衰减根据频率增加产生的频谱图像。 数字噪声调制器(200)连接到数字内插器(100)的输出端,并且执行将噪声推送到外部频带以在频带中具有低量化噪声的调制操作。 准数字IFIR后置滤波器(300)连接到数字噪声调制器(200)的输出,并执行衰减外部频带的噪声的低通滤波操作。
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公开(公告)号:KR101158038B1
公开(公告)日:2012-06-22
申请号:KR1020110048235
申请日:2011-05-23
Applicant: 주식회사 유컴테크놀러지
CPC classification number: H03M1/0614 , H03M1/0827 , H03M1/0845 , H03M2201/6327 , H03M2201/643 , H03M2201/646
Abstract: PURPOSE: A method for reducing harmonics in analog to digital conversion is provided to reduce harmonic noise generated by an A/D converter by processing output signals from an A/D converter in a time domain. CONSTITUTION: A size of a signal converted into a digital format is measured. The size of the signal is compared with a size of a signal before a 1 sampling period. The size of the signal is corrected according to a comparison result value exceeding a threshold. The correction signal passing a correction step is outputted. The measured signal outputs as it is when the size comparison result is below the threshold. The threshold is a multiplied value of peak amplitude of an analog signal, angular velocity, and a sampling period. A correction signal is calculated by using the size of the signal before the 1 sampling period and a size of a signal before a 2 sampling period.
Abstract translation: 目的:提供一种降低模数转换中谐波的方法,通过在时域中处理来自A / D转换器的输出信号,减少A / D转换器产生的谐波噪声。 规定:测量转换成数字格式的信号的大小。 将信号的大小与1采样周期之前的信号的大小进行比较。 根据超过阈值的比较结果值来校正信号的大小。 输出通过校正步骤的校正信号。 当尺寸比较结果低于阈值时,测量的信号按原样输出。 阈值是模拟信号的峰值幅度,角速度和采样周期的相乘值。 通过使用1采样周期之前的信号的大小和在2采样周期之前的信号的大小来计算校正信号。
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公开(公告)号:KR1020000026565A
公开(公告)日:2000-05-15
申请号:KR1019980044157
申请日:1998-10-21
Applicant: 삼성전자주식회사
Inventor: 이용희
IPC: H03M1/36
CPC classification number: H03M1/0626 , H03M1/08 , H03M2201/625 , H03M2201/646
Abstract: PURPOSE: A converter of a semiconductor device is provided which can convert analog to digital and vice versa in high speed and precis ion. CONSTITUTION: A converter of a semiconductor device comprises: a system for outputting a first digital signal having a predetermined period; a digital filter for filtering the first digital signal from the system and outputting a second digital signal having the frequency of the filtered first digital signal multiplied by a predetermined multiplication rate; and a digital-to-analog converter for converting the second digital signal to an analog signal.
Abstract translation: 目的:提供一种半导体器件的转换器,它可以高速和精确地将模拟数字转换为数字,反之亦然。 构成:半导体器件的转换器包括:用于输出具有预定周期的第一数字信号的系统; 数字滤波器,用于对来自系统的第一数字信号进行滤波,并输出具有滤波的第一数字信号的频率乘以预定乘法速率的第二数字信号; 以及用于将第二数字信号转换为模拟信号的数模转换器。
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