Managing energy usage in mobile devices
摘要
說明書
In a further example embodiment, a battery powered mobile device has a battery and a battery monitoring circuit that measures battery temperature, battery terminal voltage and battery current draw as an indication of a current state of the battery. A plurality of operational systems and processes form a part of the mobile device. A stored priority table tabulates an assigned priority of the plurality of systems or processes that can be converted to a lower power consumption state as the identified system or process. A programmed processor is programmed to carry out a process comprising: determining a current state of the battery by receiving data representing the battery temperature, battery terminal voltage and battery current draw; calculating a battery power factor by assigning a value to the current state of the battery temperature as T, assigning a value to the terminal voltage as V, assigning a value to the current draw as I, and computing the battery power factor as the sum of T, V and I; comparing the battery power factor to a threshold; when the battery power factor exceeds the threshold, identifying a system or process within the mobile device whose power consumption can be reduced by reference to the priority table and selecting the lowest priority system or process that can be converted to a lower power consumption state; and reducing the power consumption by altering or disabling the identified system or process.
