Analysis of environmental temperature estimations from battery temperature readings

Abstract

It is shown in previous research that a daily averaged environmental temperature can be determined by using smartphone battery temperatures and a heat-transfer model. To be able to improve this method, the relation between number or readings per day and the performance of the model is observed in the city of Sao Paulo. Apart from that additional data is available from which an entire year is used as respectively calibration and validation. It appears that this method leads to a very good, independent daily averaged environmental temperature estimate. Furthermore, the performance is investigated when spatial selections and hourly temperature estimates have been made.