heart information

[kio]

I am study bio engineering in high school
I need to build heart pulse meter
But before I start to built it I need to summarize about the heart work, the ecg, electrodes, heart ultrasound, systole & diastole & heartbeat, heat pumps, heart valves, pacemaker…
And the most difficult is to search after medicine test heart & medicine devices that test the hart
Please I need help
If anybody here can write me a good site that have this information
Or can give me name of books that have this information
Or can write me anything connected to one of this topic
I will thank he /she very much

[mith]

you can google the devices to get their info pretty easily. The simplest pulse monitor I can build is just a phonogram.

Basically you hookup a microphone next to your chest, run the leads into an instrumentation op amp and filter out your pulse signal.