Research On Internet Of Things Node Technology Based On Embedded Operating System

With the rapid development of China's industrialization,a large number of fossil-type energy sources have been consumed,and the rapid industrialization has led to environmental governance that cannot keep up with the pace of industrial development.As a means of improving air quality,Internet of Things(IoT)technology and indoor air purification technology can be combined to build an air purification IoT system through network interconnection,intelligent decision-making,and collaborative work,and establish an intelligent air purification system for the Internet of Things.Improve air purification efficiency and achieve the goal of improving air quality.The traditional IoT development technology is based on bare-machine development,with low development efficiency and high cost.The IoT node development technology based on the embedded operating system uses the operating system to shield the differences of different hardware platforms and uses the same Interface development,through the system to complete advanced scheduling of resources,can achieve IoT node functions quickly,stably,low cost and high efficiency.This paper combines the technology based on embedded operating system and the indoor air purifier technology based on Internet of Things to study an indoor air purifier IoT node technology based on embedded operating system.The IoT node technology takes the real-time operating system as the core.Through the multi-tasking,semaphore,message queue and event processing functions of the real-time operating system,the operation efficiency of the IoT node is greatly improved,and the information collection and processing of the IoT node is realized.Send tasks such as.The IoT purifier system consists of an IoT purifier node,an IoT remote server node,an IoT decision center node,and a terminal node.The Internet of Things Purifier node is the main research content of this paper.The IoT node runs with the real-time operating system as the core,runs the LWIP protocol stack on the real-time operating system,and implements TCP/IP communication and MQTT communication using the LWIP protocol stack.For the transmission of large data volume,TCP/IP protocol transmission is adopted,and the protocol can be used to transmit data in large quantities and in real time.The data exchange for small data volume is transmitted by Message Queue Telemetry Transmission(MQTT)protocol,which can conveniently exchange information with other IoT nodes.The IoT Purifier node has temperature,humidity and air quality sensors that collect and upload environmental data in real time.The Internet of Things Purifier node can also automatically control the operation of the node according to the preset rules according to the collected environmental data.The Internet of Things Purifier node is also provided with a camera monitoring system that can collect remote images in real time and send the images to the terminal device.The Internet of Things remote server node,the IoT decision center node and the terminal node cooperate with the IoT purifier node to jointly complete the task of air purification of the Internet of Things air purification system.This paper combines the embedded real-time operating system technology with the Internet of Things technology,researches and designs the IoT node of the indoor air purifier based on the embedded operating system,and completes the design and verification of the IoT node system based on the embedded real-time operating system.The collection,processing and transmission of IoT node information based on embedded operating system.The technologies covered in this paper include embedded operating system technology,Internet of Things sensor technology,network communication technology and cloud technology.