Posts
Our project is a digital stethoscope that displays your heartbeat on any television. It also calculates beats per
minute and alerts you if your rate falls out of a specified range.
At the highest level, the design of our project centers around an acquisition circuit, data processing in two
MCUs, and the output on a TV screen. The first part of the stethoscope is the acquisition unit, which consists of
an actual stethoscope mated with a microphone, and an amplifier circuit. The microphone captures the audible
signal from the body that is acoustically amplified by the stethoscope. After that, we bias and set the gain of the
signal using an operational amplifier so that the ADC on the MCU will be able to pick up the signal. The
analog data will be independently sampled by the two MCUs at a rate appropriate for display on the TV (CPU1) and a rate sufficient to capture the appropriate characteristics of the signal for beat detection (CPU2). CPU2, uses a moving threshold scheme to detect the actual heartbeats, and from that derive the heart rate. Then the signal is blasted to the TV, which also displays pertinent data, such as beats per minute. Additional information is displayed on the HyperTerm. If applicable, a buzzer will sound if your heart rate falls out of a specified range.
minute and alerts you if your rate falls out of a specified range.
At the highest level, the design of our project centers around an acquisition circuit, data processing in two
MCUs, and the output on a TV screen. The first part of the stethoscope is the acquisition unit, which consists of
an actual stethoscope mated with a microphone, and an amplifier circuit. The microphone captures the audible
signal from the body that is acoustically amplified by the stethoscope. After that, we bias and set the gain of the
signal using an operational amplifier so that the ADC on the MCU will be able to pick up the signal. The
analog data will be independently sampled by the two MCUs at a rate appropriate for display on the TV (CPU1) and a rate sufficient to capture the appropriate characteristics of the signal for beat detection (CPU2). CPU2, uses a moving threshold scheme to detect the actual heartbeats, and from that derive the heart rate. Then the signal is blasted to the TV, which also displays pertinent data, such as beats per minute. Additional information is displayed on the HyperTerm. If applicable, a buzzer will sound if your heart rate falls out of a specified range.
Download Links:
http://www.mediafire.com/?rraxo4zc4l0kk2w
I couldn't resist commenting. Exceptionally well written!
ReplyDeleteFeel free to visit my blog post ... Stethoskop
Genuinelу no matter if someone doesn't know afterward its up to other visitors that they will assist, so here it takes place.
ReplyDeletemy website: http://yop.co/index.php?do=/profile-1527/info/
Greаt blog here! Аlso your web sitе loads up
ReplyDeleteverу fast! What web host аre уou using?
Can I gеt your affіliate link to уour host?
I wish my ωеbsite loaded up as fast aѕ yοurѕ lol
Here is my homepage fliegendes buffet
I was curious if you ever considered changing the layout of your website?
ReplyDeleteIts very well written; I love what youve got to
say. But maybe you could a little more in the way of content so people could connect with it better.
Youve got an awful lot of text for only having 1 or two images.
Maybe you could space it out better?
My blog post http://akademik.che.itb.ac.id