Design of Intelligent Access Control System Based on Baidu Tiangong Internet of Things Cloud Platform

With the continuous progress and development of society, people pay more and more attention to the safety of themselves and their families. As a daily function of each family, the access control system has attracted much attention for its practicability, security and convenience. In this paper, an intelligent access control system based on STM32 main control chip and its functional modules is designed. The system includes four functions: key unlock, fingerprint recognition unlock, face recognition unlock, and mobile phone APP unlock. At the same time, a solution for cloud control intelligent access control equipment is proposed. The scheme uses MQTT Internet of Things protocol to communicate with Baidu Tiangong cloud platform. Through the cloud platform to transmit instructions, it realizes the establishment of a secure two-way connection between intelligent access control and Baidu Tiangong cloud platform, and quickly realizes cloud control. This intelligent access control system effectively solves the diversity of people's access control unlocking functions, the security of security functions, and the actual needs of monitoring convenience through mobile phones.