Electronic device for performing step counting with false-positive rejection

A method of counting steps taken by a user of an electronic device, the method comprising:

• performing a calibration process comprising:
• collecting a plurality of accelerometer data and gyroscope data for cases where a configuration step taken by the user is known to be a false positive, and for cases where the configuration step taken by the user is known to be an actual step;
• and
• forming a decision tree to determine whether a potential step taken by the user is an actual step;
• receiving accelerometer data and gyroscope data representing a potential step taken by the user of the electronic device;
• determining whether the potential step represented by the accelerometer data and the gyroscope data is a false positive by
• calculating statistical data from the accelerometer data and the gyroscope data;
• and
• applying the decision tree to the statistical data to determine whether the potential step is a false positive;
• and
• if the potential step is not a false positive, performing a step detection process to determine from the accelerometer data whether the potential step is a countable step by:
• determining a magnitude of the accelerometer data to produce first intermediate data;
• filtering the first intermediate data using a bandpass filter to produce second intermediate data;
• detecting peaks within the second intermediate data to produce third intermediate data;
• performing an elaboration on the third intermediate data to produce fourth intermediate data;
• performing a debouncing operation on the fourth intermediate data to determine whether the potential step is a countable step;
• and
• incrementing a step counter if the potential step is a countable step;
• wherein performing the debouncing operation step includes counting a number of steps registered, and if the number of steps registered is equal to or exceeds a minimum count threshold number, then the potential step is a countable step, such that the step counter is equal to a total number of countable steps, excluding potential steps falling below the minimum count threshold number.