Due to complexity of their mathematical computation, many QRS detectors are implemented in software and cannot operate in real time. The paper presents a real-time hardware based solution for this task. To filter ECG signal and to extract QRS complex it employs the Integer Wavelet Transform. The system includes several components and is incorporated in a single FPGA chip what makes it suitable for direct embedding in medical instruments or wearable health care devices. It has sufficient accuracy (about 95%), showing remarkable noise immunity and low cost. Additionally, each system component is composed of several identical blocks/cells what makes the design highly generic.
- QRS detection
- wavelet transformation
- Integer Wavelet Transform
Stojanovic, R., Karadaglic, D., Mirkovic, M., & Milosevic, D. (2011). A FPGA system for QRS complex detection based on Integer Wavelet Transform. Measurement Science Review, 11(4), 131-138. https://doi.org/10.2478/v10048-011-0024-z