A Study on the Circular Sensing Model with a Low Power Profile in Wireless Sensor Networks

Existing wireless sensor network devices based on micro-controller devices such as MICA have a serious limitation of power consumption because of dependent on AA or AAA batteries in executing nodes. However the nodes can keep their lifetime during one or more months, replacement of batteries and difficult maintenance of sensors are often needed. Therefore, it is essential for sensors to have a low power profile. In this paper, we present a method to find duration of sensing, detection of events, and circulation of sensing. Also, we implement a prototype of proposed model and simulate it about power consumption through a circular sensing method. Our main idea is to reduce power consumption for driving sensors through a circular sensing algorithm on wireless communication. We attained a result that our model can decrease power consumption up to almost 3 times. The effect is occurred from avoiding redundant transmission and decreasing the power for driving sensors.