12-lead diagnostic ECG

Bibeat Ltd. manufactures a 12-lead ECG designed at the Department of Biomedical Physics & Technology, University of Dhaka, as a low-cost alternative to imported machines. I wrote the software on both sides of the device: a C# controller that drives the hardware, and the clinical interface that doctors and operators use.

Device controller (C#, .NET)

• USB HID communication with the device, with hot-plug detection and automatic reconnection.
• Real-time conditioning of the 128 Hz signal: FIR baseline-wander and noise filters, a 50 Hz notch for mains interference.
• QRS detection and heart rate calculation on the live stream.
• WebSocket server that streams processed data to any number of clients, so the same device works from a browser, a desktop app or the telemedicine platform.

Clinical interface (Vue.js, Quasar)

• Live display of all twelve leads plus an extended lead II, with a torso map showing electrode placement.
• Auto and manual lead switching, with per-lead recording and review.
• Gain, sweep speed and 50 Hz filter controls, and heart rate with bradycardia and tachycardia indicators.
• Patient details form, printable PDF report, and image export.
• Ships as a web app inside the DUTP telemedicine platform and as a Windows Electron app.