IEEE 802.15.4低速率無線感測網路應用於災難反應之研究與評估

Abstract

Taiwan is a typical island country in the west Pacific Ocean, and there is much rain during the typhoon season from June to September. In Taiwan, the mountainside is developed overly and the population is crowded, hence the mudflows and landslides is major thing which people care about every year. On the other hand, the development of the Low Date Rate Wireless Personal Area Network（LR-WPAN）is mature gradually and LR-WPAN has the characteristic of low date rate, low power consumption, short transmission distance and low volume…etc. The application of LR-WPAN includes the detection of weather, hydrology, river, calamity and wildlife…etc. The date which collected by the sensor is very useful for an academic research. And for the calamity detection of the mudflows and landslides, it is according to earthquake sounds and the humidity of the soil, and the calamity is usually occur in rainy weather, so the detection sensors is in very low date rate state in most of the time and need to transmit data frequently just in the rainy weather. Hence, in this paper we propose a new algorithm to control its data rate and to find a balance between performance and power consumption to achieve the goal of extending battery life.