Reliable SOC estimation for battery powered embedded system

Lifetime constraint is the smallest mischance that could spell disaster to the entire embedded network. At most real time embedded devices are supported by battery backup. Low Battery life feeble the efficiency of the device, this may lead to catastrophe in hard real time. Hence lifetime constraint is considered as the significant issue in embedded device. This paper describes the solution for efficient lifetime. Battery management system is modeled by microcontroller to monitor and protect the battery pack. For safe working of the battery state of charge, SOC must be estimated. To improve the accuracy of the SOC, Kalman filter algorithm is implemented. Battery management microcontroller communicates with host microcontroller to update the battery backup and state of health of the battery system. By the information received, host microcontroller schedules the task accordingly such that no catastrophic occurs.