Abstract
Before the smart home has appeared in people's vision, people do not have a deep understanding. But we may think something is insignificant in daily life. The article designs a simple, convenient, easy way to operate, and connected with the real life of smart home system. This design is based on the STC89C52 microcomputer as the control system, the smoke sensor and temperature and humidity sensor is used to detect the external environment. The system uses the button to adjust the threshold of the smoke concentration limit. LCD1602 can display the sampled external environment information in real time. This system can be used for anti-theft in shopping malls, warehouse, bank and other occasions. The device has a strong guiding significance for the current people's daily life.
https://ror.org/018rbtf37 
