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Frieder Ferlemann
11/12/05 07:47
Read: 967 times
Old Europe


 
#103623 - median filter, simulate algo on PC
Responding to: Kai Klaas's previous message
Hi Thakkar,

I'd suggest recording the ADC data to a PC and simulating the algorithm(s) there.

Depending on the nature of your data (periodic, non periodic, gaussian, single breakouts) some algorithms will be better for you than others.

You might find a median filter (read f.e. 5 values, sort them, then take the middle one) to give good and robust results.

Note, an algorithm can't do wonders (RMS of your readings will typically drop with sqrt(Number_of_Readings)) so time spent for an analog input filter (like the one suggested by Kai Klaas) is probably spent well.

Greetings,
Frieder

List of 16 messages in thread
TopicAuthorDate
Weight Scale Avarging method      Thakkar Bhaskar      11/12/05 02:20      
   Filter providing two time constants      Kai Klaas      11/12/05 07:31      
      median filter, simulate algo on PC      Frieder Ferlemann      11/12/05 07:47      
         Periodic interference can make them fail      Kai Klaas      11/15/05 08:32      
            Acknowlegded.      Frieder Ferlemann      11/16/05 08:24      
               Agreed      Kai Klaas      11/16/05 09:24      
                  50Hz sampling      David Smith      11/17/05 03:54      
                     Anti-aliasing filter will help      Kai Klaas      11/21/05 06:27      
                        what this is all about      Erik Malund      11/21/05 06:37      
   Moving average window.      Graham Cole      11/14/05 01:50      
      Average on condition      Kai Klaas      11/15/05 07:29      
         is that not SOP (standard operating proc      Erik Malund      11/15/05 07:41      
            Hallelujah!      Kai Klaas      11/15/05 07:55      
   meaningless      Erik Malund      11/14/05 06:34      
   What are you using that one for in a wei      Erik Malund      11/14/05 09:14      
   hello from chhatraliamd for weight scale      Chhatralia Mansukhbhai Dh      12/27/05 01:01      

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