Sensor Fusion

As discussed in the previous blog entry, sensor fusion is used to create one good sensor from at least 2 sensors that are not good enough to meet specifications.  This can be done simply but when real sensors are involved it can also become a bit of a black art requiring a lot of skill and experience.

Simple Sensor Fusion Example

The wiki has an example showing the details of simple sensor fusion.  The simple example has a low frequency sensor with a bandwidth of 20 Hz.  It also included a high frequency sensor with a lower bandwidth of 1 Hz and an upper of 1 kHz.  The sensors are blended using a second order low pass and high pass filter.  Both filters have a bandwidth of 15 Hz.

I hope to eventually create another example with better filters.  I also hope to create another sensor fusion example for sensors with non-ideal transfer functions.