比较检测的R波和实际R波的matlab程序
时间: 2023-06-13 17:07:26 浏览: 51
以下是一个简单的MATLAB程序,用于比较ECG信号中检测到的R波和实际的R波:
```matlab
% Load ECG signal and R-peak annotations
load('ecg_signal.mat'); % Replace with your own ECG signal
load('r_peaks.mat'); % Replace with your own R-peak annotations
% Set parameters for R-peak detection algorithm
fs = 1000; % Sampling frequency (Hz)
window_size = round(0.15 * fs); % Window size for moving average filter
threshold = 0.5; % Threshold for peak detection
% Detect R-peaks using Pan-Tompkins algorithm
r_peaks_detected = pan_tompkins(ecg_signal, fs, window_size, threshold);
% Plot detected R-peaks and actual R-peaks for comparison
figure;
subplot(2,1,1);
plot(ecg_signal);
hold on;
plot(r_peaks_detected, ecg_signal(r_peaks_detected), 'ro');
title('Detected R-Peaks');
xlabel('Sample Number');
ylabel('ECG Amplitude');
subplot(2,1,2);
plot(ecg_signal);
hold on;
plot(r_peaks, ecg_signal(r_peaks), 'go');
title('Actual R-Peaks');
xlabel('Sample Number');
ylabel('ECG Amplitude');
```
其中,`ecg_signal.mat`和`r_peaks.mat`是分别包含ECG信号和实际R波位置注释的MAT文件。您需要将这些文件替换为您自己的文件。`pan_tompkins`是一个用于检测R波的Pan-Tompkins算法的自定义函数,您需要自己实现或从其他地方获取该函数。