Research And Development Of The Iot Gateway Based On LoRa

Internet of things bases on the Internet and sensor network,and with the development of the Internet and sensor network,it is constantly evolving.Gateway of the internet of things is the transmission layer product,it's used to achieve communication between the network and the sensor network,and display the detection data of the sensor network intuitively.Gateway will associate underlying perception and upper application to achieve the control of the production environment.The demand of gateway is analyzed at the beginning of the thesis,and a LoRa gateway system based on GWMP protocol,LoRa protocol and embedded Linux system is designed and implemented.The LoRa gateway system can perfect the interconnection of LoRa network with TCP / IP network and realize the high-efficiency LoRa network security management,conversion protocol,send and receive messages and other functions.The purpose of this project is to ensure the efficiency of LoRa gateway and to address the security management of the gateway.First of all,the basic requirements of Internet of things gateway is analyzed and the gateway software is analyzed and designed in detail.The design of the gateway software is divided into three layers: user layer,kernel layer and driver layer.User layer to designed to provide interaction and command management functions.The core layer provides the data processing capability and security management capability for the gateway system.The driver layer includes Ethernet driver and LoRa radio frequency drive,which are responsible for transmitting and receiving Ethernet data and radio frequency data respectively.The design of the gateway software includes two links,uplink and downlink,solves the uplink data transmission and downlink data transmission problems for gateway system.Finally,the communication function of gateway system is tested and it is confirmed that the gateway system has high availability and reliability.