公开(公告)号：US20170003328A1

公开(公告)日：2017-01-05

申请号：US15146227

申请日：2016-05-04

Applicant: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA

Inventor： Qinchuan ZHANG ,  Kuojun YANG ,  Lianping GUO ,  Hao ZENG ,  Jia ZHAO ,  Jinpeng SONG

IPC: G01R19/25

CPC classification number: G01R13/0272 ,  G01R13/0254

Abstract: A method for measuring waveform capture rate (WRC) of DSO based on average dead time measurement. First generating ramp signal or symmetric triangular wave signal as base signal, a trigger signal, the frequency which is higher than the nominal maximum waveform capture rate of the DSO under measurement; secondly, setting the parameters of DSO for measuring; then obtaining a plurality of test signals by delaying base signal K times with different delay time, for each test signal, inputting it the trigger signal simultaneously to DSO, calculating dead time between two adjacent captured waveforms according to their initial voltages, finally calculating waveform capture rate based on average dead times. The waveform capture rate obtained can effectively reflect the overall capturing capacity of DSO, more tellingly, the waveform capturing capacity of acquisition system of DSO.

Abstract translation: 基于平均死区时间测量测量DSO的波形捕获率（WRC）的方法。 首先产生斜坡信号或对称三角波信号作为基准信号，触发信号，其频率高于测量的DSO的标称最大波形捕获率; 其次，设置测量用DSO的参数; 然后通过以不同的延迟时间延迟基本信号K次来获得多个测试信号，对于每个测试信号，将触发信号同时输入到DSO，根据它们的初始电压计算两个相邻捕获波形之间的死区时间，最后计算波形捕获 基于平均死亡时间。 获得的波形捕获率可以有效反映DSO的整体捕获能力，更具体地说，是DSO采集系统的波形捕获能力。

公开(公告)号：US20230386595A1

公开(公告)日：2023-11-30

申请号：US18233921

申请日：2023-08-15

Applicant: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA

Inventor： Bo XU ,  Yuhua CHENG ,  Kai CHEN ,  Jia ZHAO ,  Hang GENG ,  Yifan WANG

IPC: G11C29/12

CPC classification number: G11C29/12005 ,  G11C29/1201 ,  G11C29/12015

Abstract: A random transient power test signal generator based on three-dimensional memristive discrete map, which utilizes a three-dimensional parallel bi-memristor Logistic map module to generate two pseudo-random sequences, and based on the two pseudo-random sequences, uses two waveform output modules to generate a transient voltage signal and a transient current signal respectively, thus the random transient power testing signal is obtained.

公开(公告)号：US20210215744A1

公开(公告)日：2021-07-15

申请号：US17220160

申请日：2021-04-01

Applicant: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA

Inventor： Yuhua CHENG ,  Bo XU ,  Kai CHEN ,  Songting ZOU ,  Libing BAI ,  Hang GENG ,  Yanjun YAN ,  Jia ZHAO

IPC: G01R13/02

Abstract: A system maps and stores data in digital three-dimensional oscilloscope, wherein an ADC module has four ADC submodules. Four acquired waveform data are sent to an extraction module, and buffered in a FIFO module. When a trigger signal arrives, FIFO module outputs four extracted waveform data to a mapping address calculation module for calculating a mapping address and a RAM serial number for each point data, and the waveform data comparison and control module performs the reading and writing control of the 4×N dual port RAMs. When mapping number reaches a frame number, the RAM array module outputs its waveform probability values to the upper computer module to convert each value into RBG values, and the display module displays the waveforms of input signals of four channels on a screen according the RBG values.

公开(公告)号：US20220373577A1

公开(公告)日：2022-11-24

申请号：US17515987

申请日：2021-11-01

Applicant: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA

Inventor： Bo XU ,  Kai CHEN ,  Libing BAI ,  Lulu TIAN ,  Hang GENG ,  Yuhua CHENG ,  Songting ZOU ,  Jia ZHAO ,  Yanjun YAN ,  Xiaoyu HUANG

IPC: G01R13/40 ,  G01R13/02

Abstract: The present invention provides a system for data mapping and storing in digital three-dimensional oscilloscope, wherein the fixed coefficients, which are calculated according the parameters and settings of a digital oscilloscope, are stored into a fixed coefficient memory CO RAM, the fixed coefficients are outputted to N fractional operation units through N−1 D flip-flop delay units to multiply with the acquired data x(n) and then be accumulated, thus N fractional calculus results are obtained. In this way, N fractional calculus results can be obtained by performing L/N fractional calculus operations. N fractional calculus results are sent to a signal processing and display module, in which they are converted into a display data through a drawing thread, and the display data are sent to LCD for displaying, thus the fractional calculus operation and display of a input signal in a digital oscilloscope is realized.