Heart Rate statistic displayed is inappropriate

Hello,
I am attempting to validate my output ECG by displaying the mean heart rate. I am using the 'HRV statistics' icon from in the Biomedical Toolkit. Evrytime I run it, the value for 'HR mean' changing. I also tried getting the statistic of a simulated ECG signal. Everytime I run it, the results are different for the same connection. Where am I going wrong?

Dear friend ,
thank you for the very fast reply .
yes i have digitized the signal using the microcontroller PIC ( 16F874) from microship .so i am sending diitized values to the serial port .
well . talking about the biomedical toolkit and DAQ , I am not using them at all . and this is the challenge . to get a real ECG signal through serial port .
I am having real ECG signal that is displayed yet . but wanna do further .
can you suggest anything ?
thank you .
Bill David

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Can iWatch display heart rate as a percentage of max?

Can the iWatch display heart rate readings not as "beats per minute" but as a percentage of the maximum heart rate of the wearer?

danielfromrandolph wrote:
You would have to input a lot of personal information as Max heartbeat is based on several factors, Including Age, weight and health factors, and I do not think it would be pratical for them to update this
They could simply allow you, like so many other programs do, to input your Max heart rate already calculated based on whichever formula you chose. Then all the program would need to do would be to display heart rate as a percent of that number. However, I suspect that calculation of a Max heart rate based on one of the commonly used formulae would be a trivial matter. I have far less smart smart watches that can do it.

How do I count and display events every few seconds and then convert the counted values into events per minute? (for a heart rate monitor)

Hi everyone,
I'm building a heart rate monitor as a final year project with my lab partner using the NI USB-6009 and Labview 2009. We have managed to obtain a signal using a photo transciever, smooth it out and count the events, however the count is incremental.
We wish to count the number of pulses we obtain for a few seconds (5-10 for example) and then use this value to obtain a pulse rate in beats per minute (e.g. 10 pulses in the first 10 seconds would give an estimated BPM of 60 etc etc).
Does anybody have ides on how we could implement this? We have tried timed loops, elapsed time VI's and other things but nothing gives us what we need.
Thanks in advance for any help that is offered.
Jeshua Graham.

We are very new to Labview. We are taking a raw signal from our DAQ and then using VIs to filter and then trigger counts on rising edges. I have attached our vi file to this post for you to look at (I hope that is what you mean by code).
Attachments:
TCRT-1010DAQ_jeshua1.vi ‏367 KB

Heart Rate

Hi all,
I am working on an ECG project for my thesis . I have implemented the hardware and I am acquiring the ecg signal through serial port . I did that all and i am having a signal that is displayed . now i need to go further with the project and add some heart rate indicator to it .
I need a sample VI that i connect the ECG signal to, and then extract the heart rate from it .
can you guys help me with this ?
Regards .
Bill David

Dear friend ,
thank you for the very fast reply .
yes i have digitized the signal using the microcontroller PIC ( 16F874) from microship .so i am sending diitized values to the serial port .
well . talking about the biomedical toolkit and DAQ , I am not using them at all . and this is the challenge . to get a real ECG signal through serial port .
I am having real ECG signal that is displayed yet . but wanna do further .
can you suggest anything ?
thank you .
Bill David

ECG heart rate..

Hi All,
Am doing a project to calculate the heart rate using the ECG signal, I have obtained the ECG signal using DAQ 6009 and displayed the same. Heart rate can be calculated either from P-P interval or R-R interval. My queries are:
1. How to calculate the time interval between two signal( p-p).
2. If am measuring the p-p interval and omitting the R-R, then I ahve to detect signals in between a range(omitting anything below 0.4 and greater than0.8). How can I acheive this?
If you have a better algorithm or if mine is cumbersome, I would apprecitae your help.
Looking earnestly for your replies.

Continue here
Message Edited by Support on 03-16-2009 09:42 AM

I need to digitalize an already captured analog heart rate profile

I am trying to find a simple solution to digitalize heart rate profile printouts.
I have numerous graphs containing heart rate variability over time and need to digitalize these to statistical purposes.
Does Labview or any other NI software have this capabilty?

Playing around with your digitizer setup can help a lot.
I suggest a simple scanner if it can be done on a letter sized (A4) paper for a first try.
You can download the vision tool for a 30 days try out, can save a lot of time
But like with every tool: Your faster and get better results if you know how to use it.
I'm afraid the printouts have different style so you might have to choose different strategies or setups to get good result.
However the best idea is to call your local NI support. Look if there is a trade show or other NI event near by and take a memory stick or CD with some scans. These people seems to love ad hook challenges
Greetings from Germany
Henrik
LV since v3.1
“ground” is a convenient fantasy
'˙˙˙˙uıɐƃɐ lɐıp puɐ °06 ǝuoɥd ɹnoʎ uɹnʇ ǝsɐǝld 'ʎɹɐuıƃɐɯı sı pǝlɐıp ǝʌɐɥ noʎ ɹǝqɯnu ǝɥʇ'

Heart rate stopped updating during workout

I did my first workout with my watch today, an hour of circuit training. I set the workout app to constantly display my heart rate (wow, that drains the battery...but different story). It worked great the first part of the workout, then sometime in the middle, it either completely stopped measuring it (it was constantly saying "measuring"), or it said my heart rate was something like 70 (when I know it was much higher). I even flipped the watch so instead of wearing it on top of my wrist, it was on the underside. That helped a little bit, but not a ton. I'm wondering if anybody else has noticed something like this - maybe it's related to sweat or something?

I do have the same problem. it's being difficult to lock on the heart rate while riding a bike for example, I've tried to use the watch really tight or slightly loose and no luck in getting to be consistent. Apparently is harder to lock the heart rate in darker skin with this technology.

IOS7.0.4 does not recognize my smart bluetooth heart rate monitor

I just upgraded to ios7.0.4. My iphone 4s finds my smart bluetooth heart rate monitor, but does not communicate with it. The heart rate monitor i am using is a BlueHR by Wahoo Fitness. It has a utility app to check connectivity. When I run that app it says bluetooth 4.0 is detected. it then connects to my heart rate monitor and displays a constant number. This is my third BlueHR (the first one was stolen but worked fine on IOS6). I bought a second one with these bad results, I though it was bad so I returned it and replaced it with a new one. I go the same results. Everything has appeared to happen since I updated to IOS7.0.4.

The warranty entitles you to complimentary phone support for the first 90 days of ownership.
If you bought the product in the U.S. directly from Apple (not from a reseller), you have 14 days from the date of delivery in which to exchange or return it for a refund. In other countries, the return policy may be different. If you bought from a reseller, its return policy applies.

Need to get the heart rate in run keeper without bying expense additional hardware

Hi,
I am using runkeeper to track my activities.
Till now, there is no compatible bluetooth device that can work directly with the iPhone in order to get the heart rate, this is very dispapointing.
Any project in progress on this point?

archman-cro wrote:Just a wild guess here: Try putting "resume=" in menu.lst as "by-uuid" like you have with the root partition.
Nope, that didn't help. now the dmesg related lines appear as:
TuxOnIce 3.2-rc1 (http://tuxonice.net)
TuxOnIce: Can't translate "/dev/disk/by-uuid/4564e7cd-aa5b-4b41-a7b5-20db4069bf1b" into a device id yet.
Also, that 6GB swap partition you got is a pure waste or resources. You need 3GB of swap max, and that is only if you want to store all your cache when you hibernate. If not, you don't even need a swap. If you're a normal user (means, you're not using some resource heavy apps, like those for editing HD vids or similar).
Sadly I realized that quite late Can't do a thing about it now.

Pairing my headphones and heart rate monitor at the same time

I want to know if I will be able to use my Jaybird Bluetooth headset and my Runtastic heart rate monitor at the same time?

It shouldn't be a problem. I do it with various BT headsets and a Wahoo HR monitor. You can have multiple BT devices connected to an iPhone at the same time as long as they aren't the same type of device (two speakers, two HR monitors).

Heart Rate Monitor compatibility

is the Polar Monitor: http://www.polar.fi/us-en/products/accessories/PolarWearLink_transmitterNike
compatible with any nike+ configuration? I'm using a second generation nano with the nike plus dongle and sensor.

The Polar Wearlink+ Nike+ heart monitor is only compatible with the 5th generation iPod nano.
If you want to track heart rate on an iPhone or iPod touch, there is a company that developed a dongle that ( like the popular Nike+system ) creates a wireless bridge.
Digifit uses a different technology called ANT+ and it is interoperable with > 80 sensors currently being sold by big brands like Garmin, Adidas, Spinning® and other leaders in the industry.
Check out
http://ax.search.itunes.apple.com/WebObjects/MZSearch.woa/wa/search?entity=softw are&media=all&page=1&restrict=true&startIndex=0&term=Digifit
and
www.digifit.com

Probably a stupid question on heart rate sensor

Can i use the Nike (or better the Polar Wearlink) heart rate sensor together with the Nike+ shoe sensor ? Can the ipod peering with two bluetooth sender ?
Please do'nt hit me, about that stupid question ..

According to the Polar web site it is only compatible with the 5th generation iPod:
http://www.polarusa.com/us-en/aboutpolar/press_room/press_releases/Nike_and_Polar_introduce_heart_rate_training_to_ millions_of_Nikerunners

What heart rate monitors will pair with the new iPod nano?

Are there heart rate monitors that will pair with the new 7th generation iPod nano?

It's supposed to support "Bluetooth Smart" HR monitors.
http://support.apple.com/kb/HT5479
There are some listed here:
http://www.bluetooth.com/Pages/Bluetooth-Smart-Devices-List.aspx

How do you input/upload the templates for Heart Rates, EKG, etc. onto an already existing form of LabView?

I have LabView 9.0 and I remember last year when I got it I had to go through several steps in order to upload the templates for Heart Rate, EKG, and Blood Pressure. However, since then, several of my computers have been worked on within the district and the templates are no longer on the main page anymore and I have forgotten the steps to completete to get them back. Can anyone help me??!!

What main page are you referring to? Are you referring to the Getting Started window that has the "VI from Template..." link that pulls up a dialog to select the type of file to create? That has a tree node that you can navigate and there's a VI -> From Template -> User node. If you place the template in the <labview>/templates folder then they will show up in this node.

How do you determine the distance between the QRS interval, as well as the time over that distance, in order to calculate a heart rate

Hi!
I have a continuous sample data acquistion VI created. I collected an ECG signal from electrodes connected to an ELVIS unit. Once I viewed my signal, I am curious to determine the heart rate. I need to know how I can find the R-R interval, as well as the time over than span, so I can roughly determine the heart rate, continuously. Each time a new ECG wave occurs, the heart rate should be modified automatically. Some algorithm is required.
Thanks!

Hello bmeecg,
Welcome to the NI forums! If I understand your question correctly, you wish to calculate the instantaneous heart rate from your ECG (the inverse of your R-R interval). I would recommend using the Peak Detection vi (Functions Palette»Signal Processing»Signal Operation) to determine the location of the R wave (since it is the largest magnitude, you could set a threshold above your P and T waves so that it only picks up the R wave). The calculation for time is in the detailed help for the Peak Detection vi (Ctrl+H»Hover over the VI»Detailed Help).
I also found this forum which has a VI that reads an ECG and then does a lot of analysis. Maybe this would help you out as well.
And just FYI, the Counter/Timer forum is oriented toward our counter/timer boards (e.g. the PCI-6602), the Multifunction DAQ forum probably would have more of the type of people that could help with this issue.
However, please post back here if you have more questions about this.
Neal M.Applications Engineering National Instruments www.ni.com/support

Heart Rate statistic displayed is inappropriate

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