Research And Design Of Wireless Sensor Local Area Network Based On NRF24L01

Wireless sensor network technology is widely used in environmental monitoring, industrial data acquisition and military. With the development of automation, network technology and chip miniaturization, Small-scale Wireless Sensor Network technology will be more and more into people's daily lives. As a small-scale application of Wireless Sensor Network, smart home has aroused widespread concern and discussion. This paper presents a small-scale wireless sensor networks, called as Wireless Sensor Local Area Network. The network has good stability, reliability and real-time, so it is enabling data acquisition, remote control and security protection.The design of Wireless Sensor Local Area Network includes the design of wireless sensor node and routing protocols. Wireless sensor nodes adopt RF chip nRF24L01 working in 2.4Ghz and extension microcontroller C8051F930, and they have high integration level and good communication performance. Routing protocol adopts hierarchical routing. Based on the clustering idea of LEACH algorithm and the data transmission chain idea, this paper presents a chain-cluster routing protocol.. The chain-cluster routing has good reliability and real-time, and it can meet the requirements of Smart Home.Firstly, the paper summarizes the overview of internet of things and WSN, describes the research status of wireless sensor network and the main contents of this article, analyzes two key technologies of WSN,and proposes the overall design scheme.Then,the paper elaborates the design of wireless sensor nodes based nRF24L01, analyzes two classical hierarchical routing protocols,proposes a chain-cluster routing protocol based smart home on this basis of integration and improvement,and simulates the feasibility of the routing protocol. Finally,the networking test results show that the network has a good performance in real-time and reliability of data transmission, and the paper achieves the expected goals.