- Matthew Wellings
Clip on respiration & heart rate monitor. Clips on to the nose and sounds alarm when resperation or heart rate goes outside preset parameters (set by connecting to a pc or phone). Costs ~ £5-£10 Possible 3D printable mounting clip. Very Small (Main board less than 20mmx10mm) Currently able to plot pulse and respiration on connected pc and display BPM demonstrating .
Currently uses Arduino, connect an SE95 to the Arduino I2C pins and ground the SE95's address pins. Connect an analogue pulse sensor to pin 14 of the Arduino. Connect a piezo buzzer to pin 2. Load firmware using Arduino software. Compile pc app using qmake then make.
- Rewrite firmware for reliability.
- Use an 8 lead DFN PIC micro-controller e.g. PIC12F1840 (3mm x 3mm x 0.9 mm)
- Use 4 SE95s (two under nose and two over or in mouth.)
- Design printable clip.
- Make a wireless version that transmits data to pc and a native pc/tablet app that shows results on many patients at once (No internet connection required).
- Design circuit board (two versions - one for pick and place auto assembly and another for hand soldering (slightly larger))
- Add battery alarm code.