Raspberry Pi Forums

How to convert acceleration to calories (energy) from human movement
Using sensor accelerometer

F=ma

So you need to know the mass, combine that with acceleration to find out the force. Work is force times distance, so you need to know distance, then you can use that to give you Joules used, then simple convert to calories.

Distance could be calculated using s = ut+1/2at^2, or some variation thereof, basic movement equations.

Might be an easier way.

It's not easy, you need a base line calories per hour, weight, height, age and gender to make any energy measurement turn into a fake kilo calorie (kCal) measurement.

The classic example of how NOT to do it, is the Concept2 rowing ergometer (they assume everyone is a 25% efficient energy burner, burns 300kCal/hr doing no active work and weighs in at 80Kg - you'll see a immediate flaw there).

http://eodg.atm.ox.ac.uk/user/dudhia/ro ... #section11

It's in no way as simple as F=ma.

Sherry123 wrote: ↑

Mon Mar 12, 2018 2:32 pm

How to convert acceleration to calories (energy) from human movement
Using sensor accelerometer

You want to make a Fitbit?

http://www.dailymail.co.uk/sciencetech/ ... meter.html

Steps to calories
https://www.livestrong.com/article/2380 ... -calories/

Accelerometer to step count
http://www.analog.com/en/analog-dialogu ... celer.html