Research on Online Measurement Method of Smartphone Energy Consumption

Online power measurement is one of the power measurements in smartphones which would allow us to measure the energy consumption of smartphones without using external devices. This online method depends on a built-in BMU (Battery Monitoring Unit). BMU is a chip which can gather relative data of the battery and submit them to the upper level. The current data which BMUs submit in the past is the average current over a fixed period. Previously, we found some BMUs in smartphones which would transmit the instantaneous current directly instead of the average current. This kind of BMU shows different characteristic to the former one in the experiment of online testing. In this paper, we would measure the energy consumption of smart phone components by the online approach to show their feature of energy consumption in their different power states. And more, we will analyze the data to show the accuracy and make a comparison between them finally.