Abstract: Wireless sensor networks technology has great advantage to revolutionize many engineering research domains. We present a wireless environmental monitoring system with a focus on the overall system architecture for easy integration of wired and wireless sensors for remote, and near-real-time monitoring system. We also present a unified structure for sensor data collection, database management. In this paper, we discuss and review wireless sensor network applications for environmental monitoring system. It is also proven that these approaches can increase the system performance, and provide a appropriate and efficient method and can also fulfil system requirement.

Keywords: PIC16F877A, Zigbee Module, MQ2, MQ7 Sensor, Temperature sensor, PC.