NIUChris Posted November 17, 2008 Share Posted November 17, 2008 I am a Mechanical Engineering student and we are working on a project to dynamically measure velocity of Human Powered Vehicle. We are using a LabJack U3 LV DAQ system. I have hooked it up and I used the sample counter provided with DAQFactory. We have just a simple magnet-sensor set up on the wheel and it is counting just fine. In order to get velocity you multiply your number of turns times pi and diameter and divide all of that by your time interval. I need to figure out a couple of things in order to do this... 1. The counter I worked with just keeps going as long as its open. I think I'll need to get one to reset after a few seconds and start over in order to properly calculate velocity. It needs to be taken as a derivative of time and I think that would be the best way to do it. 2. I would also like to graph this data of velocity versus time. I know that it automatically graphs the counter vs. time. I just don't know how to set it up to show a graph of velocity vs. time whenever I figure out to how to calculate velocity. 3. I would like to store the data once I start getting the numbers in for calculations. Any help would be greatly appreciated. Thanks in advance! Link to comment Share on other sites More sharing options...
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