At work, we are measuring various parameters to test out a newly designed oven prototype. To make things more efficient, I am trying to create an electronic setup to automate the measurement, in particular of the door's motion (from fully open to fully shut).
The goal is in measuring the instantaneous velocity of the door at the various points of its motion, which is a fixed radial path. Note the emphasis on instantaneous velocity logging, as opposed to an average velocity as determined by timing alone.
What is a way I can measure the ovendoor's velocity / track its motion with reasonable accuracy? (Reasonable implying error < 1-2 cm/s)
Since it is only fixed radial motion (and no component along any other axis), and since there is a moving component and a stationary component, I presume this should be an easier problem than, say, measuring the velocity of an independent body like a person or hand.
My first thought was an accelerometer-gyroscope-IMU-based method, i.e. integrating the acceleration over time to get the velocity, but reading up on this subject suggests that this will lead to sizeable errors.