Wireless sensor network nowadays has been applied to a wide range of applications. However, there are still some challenges to apply sensor networks to practical applications, such as size constraint, cost constraint, and power constraint. All those constraints would become stricter in applying to Body Sensor Network (BSN), which motivates scholars to develop more compact sensors with reasonable maintenance fees so as to carry by users or even embed into users' bodies. Under the constraints of size and cost, the battery size is strictly restricted accordingly. Thereupon power consumption becomes more and more essential to make BSN realistic. Therefore, we propose a novel architecture of BSN in this paper, which reduces the regular power consumption of BSN so that the device lifetime and network reliability can be significantly improved. The proposed architecture has following advantages: (1) it reduces redundant data transmissions without influencing the accuracy of the system. (2) By reducing unnecessary data transmissions and optimizing routing path, it simultaneously reduces the power consumption and prolongs the network lifetime. (3) It is feasible and highly applicable to many applications.
['Wei Kuang Lai', 'Mei-Tso Lin', 'Kai-Ting Yang']
Intelligent monitor system based on WSN to improve power utilization