Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Frequency counter for digital pulses

Status
Not open for further replies.
Y

yasser11

Newbie level 4
Joined
Jun 24, 2005
Messages
7
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,337
Frequency counter

I am currently doing a project that involves making an infrared based heart rate meter. If anybody has done same thing then I would appreciate any info.

Specifically , I wanted to know abt suppose I have digital pulses(heart beats), then how do I count the heart rate. I know how to make a conventional frequency counter in which counting time is 1 sec, but here the counting time is 1 min, so if I do by that method then the problem is of generation of a pulse of less than 1 Hz freq.
 

Frequency counter

You must use a clock and a counter to get a 1 Hz frequency or what you want.

if f= 500Hz, use a counter that reset at count of 500.
 

Re: Frequency counter

please donot reply before seeing the full question...
 

Re: Frequency counter

Hi yasser11:

Why you need a time base less than 1Hz?

For example: You use a time base of 1Hz = 60 pulses per minute. That is the START and END trigger of your counter.
Then you count the heart pulses during this minute.


Hope this help.

Pont de pedra
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top