Battery powered sensor nodes encounter the problem of effective use of the energy source. On one hand, the components used to build a sensor node consume current that is proportional to the delivered voltage, so voltage reduction seems to extend the lifetime. However, there are still minimum voltage requirements that must be satisfied. On the other hand, usual batteries deliver voltage that varies in time, i.e., the less energy is available the lower the voltage, thus without any Power Management means (hardware and software) the problem of energy that is still available but cannot be consumed appears.
The task of this thesis would be to develop and evaluate hardware and software solutions to the above mentioned problem. It includes: