Question

How to measure heart beat or pulse through your finger? Would a transducer be good enough?

Answer 1

Why dan why

Answer 2

trying to make a heart rate monitor

Answer 3

need to be able to capture some kind of an analog signal

Answer 4

ooooh innovation! That is the type of motivation we need!

Answer 5

Dan.... why..... just......why...... I dont know why I love you......
xD xD xD

Answer 6

I wonder how reflective blood cells are...IR sensor wise...

Answer 7

oh interesting, what are u suggesting with ir sensor

Answer 8

lol you don't know how?

Answer 9

i can use something like this too, how would the blood cell density change with a pulse

Answer 10

i love how Dan you ignore my comment like you do 24/7.. And yes ur on the right track

Answer 11

Well from what I know (And damn this is little) the volume of blood would change with each heartbeat

So from that, the amount of light reflected back to like an optics sensor would be able to measure the heart rate

Answer 12

mhm mhm i csn use like an ir diode sensor hmm i will defenitely explore this possibility

Answer 13

thanks, if u have any other methods, feel free to do so

Answer 14

Hold up!!!!!!!!!!!!! The effect of blood density to PWV has been ignored, because variation of blood density is assumed to be negligible. In some clinical situation, blood density could be changed, and blood density as a mechanical property of blood flow might affect to PWV. While the elastic property plays an important role in determining the wave propagation in an elastic tube, our assumption is that there might be some relation between blood flow and vascular wall, and that the characteristics of blood flow might influence PWV.

Answer 15

so this means

Answer 16

Other than that, *While the sensitivity would have to be big *costly** You could just use a type of vibration sensor.

Answer 17

saldis that will not effect the pulse rate

Answer 18

Ok let meh think

Answer 19

yeah thats what a transducer does, the only thing i have a problem with that is, its too sketchy theres problems with like the smallest russtle causing too much spike, i can try to put it through low pass filters, but im still worried what will happen when people cant keep it stable or its picking up other kinds of noise

Answer 20

Your heart rate, or pulse, is the number of times your heart beats per minute. Normal heart rate varies from person to person.

Answer 21

Hell if you could find a relation between the temperature of the body and the heart rate you could measure the temp with a transducer...though this would be problematic with the fact that every person has a different body temp

Bunch of ways to "theoretically" do it but the resolution would probably not be that great in each case

Just gotta brainstorm :D

Answer 22

Air temperature: When temperatures (and the humidity) soar, the heart pumps a little more blood, so your pulse rate may increase, but usually no more than five to 10 beats a minute.
Body position: Resting, sitting or standing, your pulse is usually the same. Sometimes as you stand for the first 15 to 20 seconds, your pulse may go up a little bit, but after a couple of minutes it should settle down. Emotions: If you’re stressed, anxious or “extraordinarily happy or sad” your emotions can raise your pulse.
Body size: Body size usually doesn’t change pulse. If you’re very obese, you might see a higher resting pulse than normal, but usually not more than 100.
Medication use: Meds that block your adrenaline (beta blockers) tend to slow your pulse, while too much thyroid medication or too high of a dosage will raise it.

Answer 23

I am in Anatomy. :)
Ok going on these are just some ways you can change your pulse if really just depends on the person.

Answer 24

like i have said if you are trying to change the pulse these are just a few ways how to do it. If you wanna measure the pulse thats a whole another topic

Answer 25

DANK MEMES

Answer 26

im so sorry

Answer 27

lol what the heck ukay

Answer 28

Oh actually someone already did a whole project with the IR idea!

http://www.instructables.com/id/Microcontroller-measures-heart-rate-through-finger/

Literally IR light reflects and a photo diode measures the amount of light reflected back

*So I guess blood cells really are reflective*

Answer 29

Welll then all my work and thinking went to waste -.-

Answer 30

-.-

Answer 31

All your copying and pasting did

Answer 32

ikr!!!!!!!!!!!!!

Answer 33

and i am not in anatomy i was joking it was sarcasm

Answer 34

We all knew.

Answer 35

john ty!!!

Answer 36

uve been a great help

Answer 37

Not a problem!