Student Projects
Introduction
The myPulse utilises an optical sensor consisting of an infrared emitter and an infrared phototransistor in order to display your pulse. It works because skin acts as a reflective surface for IR light and as the blood density changes, so does the intensity of the reflected IR light.
The pulse is displayed in both graphical and numerical format on the front panel.
Video
Materials
- NI myDAQ
- TCRT1010 Optical Sensor
- 220 Ohm and 2.2 kOhm resistors
- Solid Core Wire
- Velcro one wrap strap
Software
The front panel shows the waveform from the data acquired from the analog input channel on the myDAQ, using a case structure and some calculations you can even read of the pulse in beats per minute (BPM).
The block diagram is split up into three simple stages of Acquire/Analyse/Present. There is also an additional circuit theory question that allows you to use the myDAQ's DMM to measure the input current of the optical sensor.
Hardware
Please see the attached videos and manual for better understanding.
This was developed by John McLaughlin NIUK AE Intern 10/11
