Struct QrsDetector

pub struct QrsDetector<FMW, FB>
where
    FMW: Size<f32>,
    FB: Size<f32>,
{ /* private fields */ }

Find QRS complex in real-time sampled ECG signal.

Type parameters:

The QrsDetector is built upon generic_array. This has an unfortunate implementation detail where the internal buffer sizes must be set on the type level.

• FMW - number of samples representing 350ms, as typenum::U*
• FB - number of samples representing 50ms, as typenum::U*

These type parameters are checked at runtime and if incorrect and the error message will contain the correct sizes.

Implementations

impl<FMW, FB> QrsDetector<FMW, FB>

where FMW: Size<f32>, FB: Size<f32>,

pub fn new(fs: SamplingFrequency) -> Self

Returns a new QRS detector for signals sampled at fs sampling frequency.

Arguments

• fs - The sampling frequency of the processed signal. For more information see SamplingFrequencyExt.

Example

use qrs_detector::sampling::*;
use qrs_detector::QrsDetector;
use qrs_detector::typenum::{U150, U25};

// Assuming 500 samples per second
// Type parameters must be 300ms and 50ms in number of samples
let detector: QrsDetector<U150, U25> = QrsDetector::new(500.sps());

pub fn clear(&mut self)

Reset the internal state of the detector

pub fn update(&mut self, sample: f32) -> Option<u32>

Process a sample. Returns Some sample index if a QRS complex is detected.