The perception layer of the Internet of Things is an important part of the Internet of Things system, also known as the underlying technology of the Internet of Things. Mainly refers to the hardware facilities in the Internet of Things, such as sensors and actuators, which are connected to the platform of the Internet of Things through the Internet or other networks, and transmit real-time data and information to the upper management and application systems, providing a data foundation for the normal operation of the Internet of Things system.

The application scenarios of the Internet of Things perception layer are very extensive, such as smart home, environmental protection, medical health, agriculture and so on. In smart home, the sensing layer can sense indoor temperature, humidity, light intensity and other information through sensors, and carry out real-time monitoring and adjustment to realize intelligent environment control. In agricultural production, the sensing layer provides technical support for efficient and automated management of agricultural production by collecting data such as soil moisture, temperature and illumination.

With the continuous application and development of Internet of Things technology in various industries, the sensing layer technology of Internet of Things is constantly updated and upgraded. The future Internet of Things perception layer will be more intelligent, digital and integrated. Through the application of advanced technologies such as artificial intelligence and big data analysis, more accurate information collection and analysis can be realized, which makes the application of perception layer more valuable and meaningful. At the same time, the security problem of the perception layer of the Internet of Things has become increasingly prominent. How to ensure the security of devices and data in the Internet of Things is also one of the key problems to be solved in the future perception layer technology.