Design And Realization Of Wireless Intelligent Sensor Node

Environmental monitoring system of telecommunication base stations and wireless sensor terminals show a wide range of application in recent years. Based on the needs of industry application, an practical product model of wireless sensor is contructed, so as to d use it widely in environmental detection. In environmental monitoring applications, the common semaphore are temperature and humidity, current, voltage, passive infrared, smoke, flooding and so on. Traditionally, sensor nodes used are generally wired. Wireless terminal is no line, no damage to buildings, so distributed quickly and easily, added flexiblely and conveniently. To satisfy the application requirements, researching and developing wireless sensor nodes with innovative features is a new attempt in the area of environmental monitoring about the base station.Based on the research of the related technologies, a wireless sensor network design model is proposed. Accroding to the requests of wireless sensor networking, the functional requirments and technical specifications of wireless gateway are given. Through analysing the practical needs of base station enviroment monitoring, the functional requirments and technical specifications of wireless sensor nodes are also presented. Then, the hardware and the monitoring software of a wireless sensor node are designed and implemented. The hardware includes core controller interface, wireless communications transceiver circuit, sensor expansion interface aand so on. The software is consisted of temperture collection, communication model with gatway. Using object-oriented DelPhi programming language, the test platform is developed, which together with wireless gateway and smart sensor node, a practical minimum system is composed. Testing results show that the sensor node design and implementation have achieved the expected goals.