java 实现hRV测量的代码
时间: 2023-10-26 09:14:31 浏览: 71
实现 hRV(心率变异性)测量的 Java 代码需要使用心电图(ECG)信号处理技术。以下是一个简单的示例代码,用于计算 R-R 间期和 hRV 指数。
```java
import java.util.ArrayList;
import java.util.List;
public class HRVMeasurement {
// 计算 R-R 间期
public List<Double> calculateRRIntervals(List<Double> ecgSignal) {
List<Double> rrIntervals = new ArrayList<>();
for (int i = 0; i < ecgSignal.size() - 1; i++) {
double rrInterval = ecgSignal.get(i + 1) - ecgSignal.get(i);
rrIntervals.add(rrInterval);
}
return rrIntervals;
}
// 计算 hRV 指数
public double calculateHRV(List<Double> rrIntervals) {
double hrv = 0.0;
for (int i = 0; i < rrIntervals.size() - 1; i++) {
double diff = rrIntervals.get(i + 1) - rrIntervals.get(i);
hrv += Math.pow(diff, 2);
}
return hrv / (rrIntervals.size() - 1);
}
// 示例用法
public static void main(String[] args) {
List<Double> ecgSignal = new ArrayList<>();
ecgSignal.add(0.0);
ecgSignal.add(0.1);
ecgSignal.add(0.3);
ecgSignal.add(0.6);
ecgSignal.add(1.0);
ecgSignal.add(1.5);
ecgSignal.add(2.1);
ecgSignal.add(2.8);
ecgSignal.add(3.6);
ecgSignal.add(4.5);
HRVMeasurement hrvMeasurement = new HRVMeasurement();
List<Double> rrIntervals = hrvMeasurement.calculateRRIntervals(ecgSignal);
double hrv = hrvMeasurement.calculateHRV(rrIntervals);
System.out.println("RR intervals: " + rrIntervals);
System.out.println("hRV: " + hrv);
}
}
```
上述代码中,`calculateRRIntervals` 方法计算 R-R 间期,`calculateHRV` 方法计算 hRV 指数。在 `main` 方法中,我们构造了一个示例 ECG 信号,并使用上述方法计算 R-R 间期和 hRV 指数。