microbubble detector in moving blood

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bytriz

New Member

• Feb 9, 2008

• #1

hi!

i am now working on to build microbubble detector (in moving blood) using infrared. i plan to use Ir emitter of 850nm. however i'm kinda confused on how to match it with any other phototransistor/photo detector. and plus, i'm kinda confused of both usage. are both phototran/photo detector are all same? for now, i am kinda need help on choosing which is the best detector for that particular Ir emitter. i am really in need of help.

tq.

 

Hero999

Banned

• Feb 9, 2008

• #2

850nm is a pretty common wavelength for IR diodes and transistors which can be purchased in matched pairs.

Also, this sounds like a fairly invasive piece of equipment and would need proper approval before it can be legally used.

 

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bytriz

New Member

• Feb 9, 2008

• #3

'fairly invasive piece'?
would you mind elaborate more?
thanks.

 

Hero999

Banned

• Feb 9, 2008

• #4

Well pesumably it involves extracting blood from someone which is pretty invasive.

 

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KMoffett

Well-Known Member

• Feb 9, 2008

• #5

Out of curiosity...is this a hobby, academic, research, or clinical project?

Ken

 

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vimalg

New Member

• Feb 9, 2008

• #6

need this project

 

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bytriz

New Member

• Feb 9, 2008

• #7

oh ya~about that, i'm still thinking not using the real blood. maybe just using some liquid that having same or nearly same density as blood. However, it is still in discussion with my supervisor.

btw, this is an academic reasearch. erm..is it wrong to ask here if with that intention(academic research).

 

blueroomelectronics

Well-Known Member

• Feb 9, 2008

• #8

I don't know why I have this link in my bookmarks, guess I was interested at one time.
https://www.analog.com/library/analogDialogue/archives/41-01/pulse_oximeter.html

 

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KMoffett

Well-Known Member

• Feb 9, 2008

• #9

bytriz,

I think your inquiry is very appropriate here. "Clinical" would get into a little risky area, but even clinical projects start as research. The questions here range from the very simple...to...those that are way too complex...but we almost always learn something from them.

I'm a former Biomedical Engineering Tech so you goal is intriguing. Is the bubble detector "the" project, or is this a "buy? vs build?" part for a larger project? The blood bubble detectors I'm familiar with are ultrasonic.

Ken