Biomedical Engineering (M.Sc. / P.Grad.Dip.) postgraduate personal statement example

Personal statement example

On a cold January morning, cycling to a lecture, I glanced at my fitness band and saw it claim a heart rate of 178. I was pedalling gently along a flat road. By the time I locked the bike it had dropped to 64, which seemed equally unlikely. That small inconsistency became the starting point for my final-year project, and it is the reason I now want to study biomedical engineering at postgraduate level.

My undergraduate degree in electronic engineering gave me a solid grounding in analogue circuit design, signal processing and embedded programming, but the human body hardly appeared in it. For my project I built a wrist-worn photoplethysmography sensor using a green LED, a photodiode and a transimpedance amplifier feeding a microcontroller. Photoplethysmography relies on the small changes in light absorption as blood volume in the tissue rises and falls with each heartbeat, and I quickly learned how fragile that signal is. Arm movement, a loose strap and cold skin all distorted it. Cold was especially instructive: reduced blood flow to the extremities weakened the pulsatile component until noise dominated, which may explain part of my morning reading.

I added an accelerometer and implemented an adaptive least-mean-squares filter that used the motion signal as a noise reference. Testing on myself and four classmates while walking, typing and jogging on the spot, I compared my readings against a chest-strap monitor. The filter clearly improved the walking and typing results, while jogging remained unreliable. My write-up was candid about that limit, and I was pleased that my supervisor singled out my test protocol and error analysis as the strongest part of the work. The project showed me that designing medical devices means understanding physiology as carefully as the circuit, and that is the gap I want postgraduate study to close.

Outside university I have worked for three years at a bicycle repair shop, mostly on weekends. The job is not glamorous, but it has made me practical. I diagnose faults from vague descriptions, explain options to customers who are not interested in gear ratios, and work to a fixed price. I have also become interested in how bikes are adapted for riders with limited grip or balance after the shop fitted a tricycle for an older customer recovering from a stroke. Watching her try different brake lever positions made me think about ergonomics and rehabilitation devices in a way that lectures had not.

On Saturday mornings I volunteer as a timekeeper at a junior swimming club. Mostly this means standing at the end of a lane with a stopwatch, though I also helped the club test a second-hand touchpad timing system, checking its results against manual times and writing a one-page guide for the other volunteers. It was a small task, but it reminded me that good equipment is useless if the people relying on it cannot trust or operate it.

To prepare for a change of focus, I have been teaching myself human physiology from an introductory textbook and working through online material on biomaterials and medical imaging, areas my degree did not cover. I find the mechanics of soft tissue particularly interesting, partly because it explains why a sensor pressed against skin behaves so differently from one clipped to a circuit board.

I am looking for a course that will give me rigorous training in physiology, biomechanics and medical device design, alongside the regulatory and ethical context that clinical technology demands. I bring reliable electronics and programming skills, an honest approach to testing, and the patience of someone who has spent many hours finding the one loose cable in a dynamo light. I would like to build devices that give correct readings on cold mornings too.