| Summary: | 碩士 === 國立中正大學 === 資訊工程研究所 === 92 === Wireless sensor networks are capable of sensing the change in the environment, producing a measurable response and exchanging data with each other via wireless communication.
They can be applied in many kinds of domains such as fire detection or security detection.
However, wireless sensor networks still face many challenges.
Firstly, sensors are battery-operated and have limited energy.
Hence, reducing energy consumption to extend system life is required.
Secondly, sensing range is usually decided by sensing modules.
It is also called coverage which represents the quality of service in wireless sensor networks.
The broader the sensing range is, the more correct the information sensed is.
Therefore, maximizing total coverage is quite important.
In this thesis, we proposed a power-aware communication approach to solve the challenge above.
Because radio module is the component that consumes the most energy in sensors, decreasing data transmission distance can conserve energy efficiently.
Moreover, this approach will base on the principle of maximizing total coverage to establish clusters and decide suitable data transmission path for sensors to reduce energy consumption.
We first proposed a communication approach considering both power consumption and quality of service in wireless sensor networks.
The simulation results show that this approach outperforms traditional power-aware communication approaches.
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