Multiple rate datalogging

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chagnonp
Posts: 14
Joined: Tue Dec 21, 2010 10:08 am

Multiple rate datalogging

Post by chagnonp » Mon Jul 16, 2012 10:15 am

It would be great to be able to log parameters at different rates. For example logging fast changing parameters such as engine speed at 10Hz and slow changing parameters such as engine hours at 0.01Hz. What do you think?

Thanks,

Pete Chagnon
bburgess
Posts: 2
Joined: Thu Oct 06, 2011 3:06 pm

Re: Multiple rate datalogging

Post by bburgess » Wed Jul 25, 2012 9:28 am

Hi, No knowlege of Multiple Rate logging, however do you have a method for calculating memory consumption that works for you?

I did some crude tests. 11 parameters, 1 second log interval. I recorded the memory usage and calculated over 1 second intervals and over 1 minute intervals. In this case memory consumption was about 3217 bytes/minute (by Datalogger.LogSize) This would be 3.141602 KByte / minute. I conclude that we would consume 1024 Kbytes (1MByte) in about 325 minutes or roughly 5 ½ hours. Testing proved it.

There would be obvious value in multiple rate logging. Thanks in advance.