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. Author manuscript; available in PMC: 2022 Feb 1.
Published in final edited form as: IEEE Trans Biomed Eng. 2022 Jan 21;69(2):678–688. doi: 10.1109/TBME.2021.3103201

Fig. 8.

Fig. 8.

Computation and temperature limits of the microcontroller. (A) The maximum sampling rate and associated average delay depends on the number of sensors attached to the system and the mode of computation. We evaluated three modes of computation on the microcontroller: using a single core in real-time (solid line), all four cores in real-time (dashed line), and offline computation using a single core (dash-dot line). The sampling rates (black) and delays (red) were averaged over a one-minute recording. The error band represents one standard deviation across 5 trials. (B) The internal CPU processor temperature as a function of time was averaged for each of the 14 sensor configurations. The single core (solid line) and offline (dash-dot line) tests resulted in a safe steady-state temperature below any CPU limits.