The Impact of Ambient Temperature Variations on Signal Intensity of Outdoor WSN System

摘要

The outdoor ambient temperature variations impact the performance of devices in wireless sensor network (WSN) systems. This paper presents a WSN system for researching the impact of temperature changing on the signal intensity of the WSN system. The system consists of a PC, a getaway and a sensor node. A transmission power self-adjusting algorithm is proposed. The influence of temperature on the WSN system and the function of the transmission power self-adjusting algorithm are tested respectively. The experimental results show that the signal intensity of the WSN system decreases 3.5 dBm while ambient temperature increases from 20 °C to 50 °C. The results verify that the transmission power self-adjusting algorithm is effective for stable communication and energy saving.