This project, fan monitoring using an embedded device's onboard accelerometer, was created to showcase Edge Impulse's Advanced Anomaly Detection Feature Importance addition. Check out the full blog post!

Select automatically suggested features by importance for your industrial sensor data by using your custom digital signal processing block or one of the default DSP blocks provided in Edge Impulse, allowing you to create even more accurate anomaly detection models for new and unseen data based on the most important features of your model's training data.

For example, collect training data for a fan vibration monitoring system where your fan is continuously performing nominally. It would be costly and impractical for an industrial-sized fan to purposefully break or get obstructed only to collect training/testing data for a model to detect future fan failure. Instead, collect data of the fan vibrations where the machine operates nominally and when powered off in normal conditions. Upload these frequency and time-based samples into your Edge Impulse project, add a Spectral Analysis DSP block, or your custom DSP code. Generate the features based on your uploaded training data with this code/block. Edge Impulse Studio will then output a Feature Importance graphic that will help you determine which axes and values generated from your DSP block are most significant to analyze when you want to do anomaly detection.