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Which kalman filtering use to reduce noise from accelerometr?

Hi I am going to measure velocity use accelerometr form A&D. It is adxl345. I conected my uC with adxl345 by SPI. Data from accelerometr are sending to my computer by the RS232. I get this data but sometimes i get wrong data. It is probably noise. I would like reduce it by the kalman filtering. Could I use Kalman filtering with only signal form accelerometr? Which Kalman Vii (whoes are in labview 2010) i must use? If t is possible filtering data without other signal for example from gyroscope? Now I get acceleration data, there are no integrate yet. Below i send print screen with my data output presentatnion on the graph. You can see there some unexpected peak. What is this? If Kalman filtering help me? If yes which Kalman block from Labview I must use. Heeeeeelp me please.

 

Greating from Poland

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nobady answer me

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Probably no one answered because no one was sure what you wanted.  In the image you posted what is the correct signal and what is the undesired part?  The time scales are different, the numbers of peaks is different, and the peak shapes may be different.

 

Before attempting to filter the data, it is usually a good idea to determine the cause and the nature of the interfering signal.  The more you know about the "noise," the more likely you will be able to select a processing method to eliminate it.  Is the noise random? Does it correlate with some mechanical behavior of the system?  With what kind of distribution? What is the amplitude range of the desired signal?  What is the amplitude of the normal background noise? What is the amplitude range of the interfering signal?  What is the frequency distribution of these signals?

 

Lynn

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