processing Vernier SensorDAQ information live using peak detection and integration

[rloombs]

Hey foks,

New to the board and LabVIEW software.

I'm currently working on a project that will essentially be used as an exercise device on a rowing machine(http://en.wikipedia.org/wiki/Indoor_rower). I will be using Vernier SensorDAQ as my data acquisition device with the following two sensors:

accelerometer: http://www.vernier.com/probes/acc-group.html

Hand grip heart rate sensor: http://www.vernier.com/probes/hgh-bta.html

What I would like to have is a VI that will acquire and process data in real time. The end goal is to be able to have have a beats per minute readout of one's heart rate, and a graph of one's distance. This data will be displayed to the user as he/she works out. Also the data will be saved for each workout and futher analysis will be available to the user post workout, such as calculating averages, min,max of HR and length traveled.

For the accelerometer I've decided to use a preinstalled subvi http://zone.ni.com/devzone/cda/tut/p/id/4989, called Integration SVT.vi, which essentially performs numerical integration on data to give velocity and distance from acceleration data.

For the hand grip sensor, I've tried to use labviews waveform peak detection VI. The hand grip HR sensor outputs a 3V pulse everytime a HR is detected. So I'm trying to convert these pulses into an actual beats per minute, that can be displayed on the front pannel.

I'm having issues getting this to run in real time. I have attached the VI's.

Thank you ahead of time for your responses.

[DaveFromPortland]

Please consider using the new Express VIs for SensorDAQ that we put at http://www.vernier.com/labview/downloads/ . Click on the SensorDAQ icon and download the installer for LV2009 or Lv2010. They are free.

Note that we have a couple somewhat related project in our new book of engineering projects. See:

http://www.vernier.com/cmat/epv.html .

Also, we have a book on learning to use LabVIEW using SensorDAQ. See:

http://www.vernier.com/cmat/lwv.html

[Steve.J]

Please also visit our NI Biomedical User Community at www.ni.com/biomedusers where you will find a wealth of resources for LabVIEW users in the biosciences and information about our free Biomedical Starter Kit, which includes sample applications and VI's for biomedical functions.

Good Luck!

Steve

[DaveFromPortland]

Hello,

Somehow, I got the message below from some NI forum. I want to make sure you know that NI quit making SensorDAQ many years ago. I would encourage you to use a data acquisition device that is still supported.

In the old days we had VIs and Express VIs for use with SensorDaq. I assume you have looked at those. See: https://www.vernier.com/downloads/labview-virtual-instrument-downloads/sensordaq/

Our products are meant for education, so mostly we used SensorDAQ to teach coding and simple feedback and control systems. We almost always used just one sensor. Doing rates and another reading at the same time would be a challenge.

Dave

Hey folks,   New to the board and LabVIEW software.   I'm currently working on a project that will essentially be used as an exercise device on a rowing machine(http://en.wikipedia.org/wiki/Indoor_rower). I will be using Vernier SensorDAQ as my data acquisition device with the following two sensors:   accelerometer: http://www.vernier.com/probes/acc-group.html   Hand grip heart rate sensor: http://www.vernier.com/probes/hgh-bta.html   What I would like to have is a VI that will acquire and process data in real time. The end goal is to be able to have have a beats per minute readout of one's heart rate, and a graph of one's distance. This data will be displayed to the user as he/she works out. Also the data will be saved for each workout and futher analysis will be available to the user post workout, such as calculating averages, min,max of HR and length traveled.   For the accelerometer I've decided to use a preinstalled subvi http://zone.ni.com/devzone/cda/tut/p/id/4989, called Integration SVT.vi, which essentially performs numerical integration on data to give velocity and distance from acceleration data.   For the hand grip sensor, I've tried to use labviews waveform peak detection VI. The hand grip HR sensor outputs a 3V pulse everytime a HR is detected. So I'm trying to convert these pulses into an actual beats per minute, that can be displayed on the front pannel.   I'm having issues getting this to run in real time. I have attached the VI's.   Thank you ahead of time for your responses.