:-)
Stanley
- Original Message -
From: Magnus Danielson mag...@rubidium.dyndns.org
To: time-nuts@febo.com
Sent: Wednesday, February 20, 2013 4:49 PM
Subject: Re: [time-nuts] Off topic project sort of heart rate monitor NEED
BEATS PRE MINUTE TO ANALOG VOLTAGE
On 20/02/13 02:23, Bob Camp wrote
If you only need cardiac pulse rate, an optical pulse-oximeter type
interface - but without the oximetry part - would be much simpler than
an ECG system, and it doesn't need galvanic connection. If you need more
than that, then ECG methods should suffice.
Back in the 1970s, there was a lot of
...@febo.com] Im Auftrag von David Kirkby
Gesendet: Mittwoch, 20. Februar 2013 08:34
An: Paul Cianciolo; Discussion of precise time and frequency
measurement
Betreff: Re: [time-nuts] Off topic project sort of heart rate
monitor NEED BEATS PRE MINUTE TO ANALOG VOLTAGE
On 20 February 2013 00:58
Hi
Actually I have the 70's beat by a decade in terms of playing with home made
ECG gear….
Bob
On Feb 20, 2013, at 2:39 AM, Ed Breya e...@telight.com wrote:
If you only need cardiac pulse rate, an optical pulse-oximeter type interface
- but without the oximetry part - would be much simpler
Another thing they do in the rate algorithms is make sure each beat falls in
accordance with the previous 3 or 4 beats.
Sent from mobile
On Feb 20, 2013, at 6:02 AM, Bob Camp li...@rtty.us wrote:
Hi
Actually I have the 70's beat by a decade in terms of playing with home made
ECG gear….
On 2/19/13 10:58 PM, Hendrik Dietrich wrote:
Good morning Paul,
First: I almost spilled my coffe as you bear a similar last name as a
guy at a national research lab who does exactly such things :)
Even when it makes your ECG preamplifier free for other things, I advise
you to use another
On 20/02/13 02:23, Bob Camp wrote:
Hi
The first layer to the onion is that the ECG signal is a bit complex. There's
also likely to be a bit of this and that on it.
How about taking the output of the instrument amp into the A/D port on a cheap
PIC? That would let you do some AGC and dynamic
Hello Folks,
I am working on a project intended to convert an analog ECG signal to a voltage
proportional the heart rate,
The actual electrodes instrumentation amp is pretty much working fine so no
worries there.
The problem is, and here is where the relationship to time nut comes in.
The
On Tue, Feb 19, 2013 at 04:58:04PM -0800, Paul Cianciolo wrote:
Hello Folks,
First, I cannot speak for the list, as I'm quite new here,
but in general 'Thread Hijacking' is frowned upon :)
(read: start your own thread :)
I am working on a project intended to convert an analog ECG
signal to a
Hi
The first layer to the onion is that the ECG signal is a bit complex. There's
also likely to be a bit of this and that on it.
How about taking the output of the instrument amp into the A/D port on a cheap
PIC? That would let you do some AGC and dynamic filtering. At even a modest
sample
pa...@snet.net said:
The actual electrodes instrumentation amp is pretty much working fine so no
worries there.
My first tthought was a frequency to voltage IC like the LM2907 or the 2917
but I get the impresiion from the data sheets that these chips will not work
at these very low 1 Hz
Paul,
I use a picPET (http://leapsecond.com/pic/) to measure heart rate and
stability; the original 1PPS... The idea is simply to time-stamp every beat
and then convert that raw data to rate or period or moving average rate, etc.
/tvb (iPhone4) LA
On Feb 19, 2013, at 4:58 PM, Paul Cianciolo
The most straightforward method these days would be a small
microcontroller implementing a pulse width modulation digital to
analog converter.
The analog route is pretty easy though. A traditional charge or
current pump can operate down to 30 Hz but will have an output ripple
versus settling
On 2/19/13 4:58 PM, Paul Cianciolo wrote:
Hello Folks,
I am working on a project intended to convert an analog ECG signal to
a voltage proportional the heart rate, The actual electrodes
instrumentation amp is pretty much working fine so no worries
there.
The problem is, and here is where the
On Feb 19, 2013, at 5:38 PM, Hal Murray hmur...@megapathdsl.net wrote:
pa...@snet.net said:
The actual electrodes instrumentation amp is pretty much working fine so no
worries there.
My first tthought was a frequency to voltage IC like the LM2907 or the 2917
but I get the impresiion
Good morning Paul,
First: I almost spilled my coffe as you bear a similar last name as a
guy at a national research lab who does exactly such things :)
Even when it makes your ECG preamplifier free for other things, I advise
you to use another sensor and put a lot of decoding and interpretation
On 20 February 2013 00:58, Paul Cianciolo pa...@snet.net wrote:
The purpose of this apparatus is to print a rolling chart on the screen of a
computer of heart BPM and then try different technicues of meditaion and
calming technicues to lower my heart rate for short periods of time.
Just a
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