Date Added: Sep 2013
In this paper, the authors discuss various challenges involved in designing and evaluating the performance of a HSN. As the sensor nodes are supported by batteries, they run on limited power supply. Thus, enhancing the network lifetime by efficient power management and effective energy harvesting strategies has become an important research goal. HSN operate in a highly dynamic environment and hence consume more power. Past research concentrated on energy harvesting using ambient sources such as solar, wind, thermal and vibration energy. Very little research has been done on harvesting thermal heat from the body and surrounding wasted heat.