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PWM
通过STC12C5A60S2新增的PCA模块来产生占空比可以调节的方波。(By STC12C5A60S2 new PCA modules can be adjusted to produce the duty cycle square wave.)
- 2013-10-08 11:47:49下载
- 积分:1
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心电信号检测与分类算法的研究
说明: (1)心电信号预处理
心电信号是一种低频且含有众多噪声干扰的信号。针对心电信号存在的
噪声干扰问题,本文采用了平稳小波变换结合双变量阈值的方法对其进行去 噪处理。通过对心电信号进行八层平稳小波变换,得到不同的小波系数,采
用双变量阈值函数表达式对其进行处理得到新的小波系数,最后进行逆平稳
小波变换实现小波重构,完成心电信号去噪。Matlab 仿真结果显示,本文算
法的准确率较高,信噪比达到 84.5934dB。 (2)心电信号波形识别
反映心电信号的特征部分往往是信号的突变点,因此需要对心电信号的
突变点进行识别检测。本文通过采用二次 B 样条小波对去噪后的心电信号
进行四层平稳小波变换,在第四尺度上对心电信号的 R 波进行波形检测。 在第二尺度上以正确检测 R 波为基础,实现 Q 波和 S 波的波峰、起始点及
终止点检测。为了保证检测精度,本文设置了误检漏检机制。最后在第五尺 度实现了 P 波和 T 波波峰、起始点及终止点检测。仿真结果表明本文的算
法检测精度较高,准确率达到 99.81%。(This paper proposes an efficient method of ECG signal denoising using the adaptive dualthreshold filter (ADTF) and the discrete wavelet transform (DWT). The aim of this method isto bring together the advantages ofthese methods in order to improve the filtering ofthe ECGsignal. The aim of the proposed method is to deal with the EMG noises, the power lineinterferences and the high frequency noises that could perturb the ECG signal. This algorithm is based on three steps of denoising,)
- 2020-03-06 12:37:15下载
- 积分:1
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边缘填充
在算法原理上,对于图形图像设计中的多边形的边缘进行填充处理(In principle, filling the edges of polygons in graphic and image design)
- 2019-06-02 14:30:54下载
- 积分:1
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stm32变频器
变频开发程序和电路,STM32,KEIL(Frequency Converter Development Program and Circuit)
- 2019-07-10 16:07:23下载
- 积分:1
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melpe 编解码程序 melpe fxp src
melpe 编解码 程序 melpe 编解码 程序melpe 编解码 程序 melpe 编解码 程序(melpe decoder)
- 2016-08-11 16:51:36下载
- 积分:1
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C231_C06
Ordinary and Partial Differential Equation Routines in C, C++, Fortran, Java, Maple, and MATLAB
- 2007-07-31 12:41:11下载
- 积分:1
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LibraryMIS
图书馆管理系统,实现了对图书的增加、删除、修改、更新,以及图书的借阅功能。(Library management system, to achieve the increase of books, delete, modify, update, and borrow books feature.)
- 2014-04-29 10:35:10下载
- 积分:1
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多点目标成像算法 RD
本算法是多点目标成像算法,包括距离向压缩和距离迁移校正等(This algorithm is a multi-point target imaging algorithms, including compression and distance range migration correction)
- 2016-06-11 13:31:25下载
- 积分:1
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spwm
说明: 用proteus仿真实现逆变器,基本实现闭环控制,单片机是ATMEGA88。(The inverters are simulated by proteus, and the closed-loop control is basically realized. The single chip computer is ATMEGA88.)
- 2019-07-10 15:16:08下载
- 积分:1
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test
矩阵运算器,c语言编程,数据结构,免费下载(Matrix calculator, c language programming, data structures, free download)
- 2008-05-04 09:32:59下载
- 积分:1