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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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HVAC
暖通冷凝器计算的excel表格计算文档,比较实用(HVAC condenser calculation excel spreadsheet documents, more practical)
- 2013-06-27 14:36:13下载
- 积分:1
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ruhuajili
车轮踏面磨耗论文,对轮轨接触进行分析(Wheel tread wear paper, wheel-rail contact analysis)
- 2018-11-25 17:23:12下载
- 积分:1
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Sokoban Game: users can set the clearance to set up a few more difficult to choo...
推箱子游戏:用户可以通过设置关数来设置难度,选择是否有音效,用户只能通过键盘上的四个方向键来操作,目标是移动“小人”将三个方形的黄色箱子移到三个白色的圆圈里面。-Sokoban Game: users can set the clearance to set up a few more difficult to choose whether or not there is sound, the user only through the four keyboard arrow keys to operate, with the aim of moving
- 2022-03-10 12:00:04下载
- 积分:1
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一个蚁群优化原理ppt详细系统介绍…
一个详细的 系统的介绍了 ant colony optimization 的ppt 对其中的原理做了比较详细的分类介绍 -A detailed system for the introduction of ant colony optimization principle ppt of them make a more detailed classification of introduction
- 2022-05-22 14:33:10下载
- 积分:1
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深度学习
python 关于深度学习以及Imageai的一些资料(Python deep learning and other file about the Imageai)
- 2020-06-16 12:28:32下载
- 积分:1
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2D_dubins-master
说明: 无人机dubins航路规划算法,matlab m语言编写(pathplannig algorithm for uavs)
- 2020-12-30 14:18:59下载
- 积分:1
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STM32 的4路互补pwm
使用keil5编写的STM32输出四路互补的PWM,适配正点原子的mini版,同样是为电赛逆变系统做的准备。通过定时器的输出比较模式,在PC6~PC9,输出4路PWM,每路PWM频率为500Hz,占空比为50%,每一路PWM相位差为45°(The STM32 output four complementary PWM, which is written in keil5, is suitable for the mini version of the positive point atom, which is also the preparation for the electric match inverter system.Through the output comparison mode of the timer, in PC6~PC9, the output 4 road PWM, the PWM frequency of each road is 500Hz, the duty ratio is 50%, and the PWM phase difference of each road is 45 degrees.)
- 2021-01-27 10:28:35下载
- 积分:1
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ICCProfiles
说明: ICC Profiles and Monitor Settings Database - TFTCentral
- 2020-06-18 11:20:02下载
- 积分:1
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BridgeBuck
Matlab文件,一种无桥buckPFC电路,具有高效率(Matlab a kind of bridgeless buck PFC
converter)
- 2018-06-07 20:24:47下载
- 积分:1