The application layer is located at the top of the three-tier structure of the Internet of Things, and its function is "processing", that is, processing information through the cloud computing platform. The application layer, together with the lowest perception layer, is the remarkable feature and core of the Internet of Things. The application layer can calculate, process and mine the data collected by the perception layer, so as to realize real-time control, accurate management and scientific decision-making of the physical world.
Application infrastructure/middleware provides common basic service facilities, capabilities and resource calling interfaces for Internet of Things applications, and on this basis, it realizes various applications of Internet of Things in many fields.
Key technologies of Internet of Things application layer;
1. Cloud computing: Cloud computing can help the storage and analysis of massive data in the Internet of Things. According to the service types of cloud computing, cloud can be divided into: Infrastructure as a Service (IaaS), Platform as a Service (PaaS), Service and Software as a Service (SaaS).
2. Big data: The application layer can calculate, process and mine the data collected by the perception layer, thus realizing real-time control, accurate management and scientific decision-making of the physical world.
Application layer structure of Internet of Things;
1, Internet of Things Middleware: Internet of Things Middleware is an independent system software or service program, which encapsulates various common capabilities and provides them to Internet of Things applications.
2. Internet of Things applications: Internet of Things applications are all kinds of applications directly used by users, such as intelligent control, security, power meter reading, telemedicine, intelligent agriculture and so on.
3. Cloud computing and big data: Cloud computing can help the storage and analysis of massive data in the Internet of Things. According to the service types of cloud computing, cloud can be divided into: Infrastructure as a Service (IaaS), Platform as a Service (PaaS), Service and Software as a Service (SaaS).