Design Of Actuator Nodes For Intelligent Building Wireless Sensor Networks

With the development of Internet of Things industry, more and more researches and concerns have been done on the wireless sensor network technology, which is the core of the Internet of Things. The applications of the wireless sensor network continue to expand and enrich, gradually penetrating into agriculture, industry, military, environmental protection, etc. The wireless sensor network comprises of various sensor nodes, whose design is strongly correlated with their application scenarioes. So the design of sensor nodes meeting the particular application scene becomes the key issue of study.This paper is based on the CNGI project---"The application of the next generation internet technologies in intelligent building to realize energy conservation". Paper takes intelligent building as an application background, designs a kind of intelligent wireless sensor network control nodes to overcome the many shortcomings of the current common nodes, such as poor versatility, monotone control manner, and weak automatic environmental regulation capacity. The node with the intelligent IR control signal learning ability, can automatically adjust the lighting, air conditioning and other electric equipments according to the environmental threshold, and achieve remote monitoring and network device management under a various access methods.First, the paper gives a simple review on the research of the intelligent building and wireless sensor network, analyzes the characteristics of the wireless sensor network and the requirements of intelligent building application on the wireless sensor network, then in line with the characteristics of the intelligent building, presents a design scheme of wireless sensor network control nodes that is suitable for intelligent buildings usage. The design is divided into two parts. One is the general control module, which accomplishes the hardware design and the specific realization method of the sub-modules as include processors, wireless communications, data collections, energy managements, etc. The other is the intelligent control modules, which involves the hardware, software and implementation methods of the sub-modules of air-conditioning control, lighting-control and the body infrared control. Moreover, this paper proposes a definite scheme for control nodes applying in the intelligent building device monitoring system to realize remote device monitoring. Finally, this paper builds an intelligent building network platform to analyze the performance and function of the wireless sensor network control nodes, and gives the experimental results in the actual environment, which show certain advantages of the nodes in scalability, versatility, equipment control and indoor environment regulation. The actuator nodes can meet the remote monitoring and energy-saving of intelligent building.