Design and Implementation of Fire Monitoring and Warning User Terminal System

In this paper, a new intelligent and convenient fire alarm system is designed for small and medium-sized places and crowded places with many fire hazards. The system is composed of GD32F150R8T6 microcontroller, DHT11 temperature and humidity sensor, MQ-2 smoke sensor and other modules to complete data collection. When the temperature, humidity and smoke concentration of the fire site environment reach the set threshold, the buzzer in the system will sound and the LED warning light will be on, thus realizing the sound and light alarm. At the same time, the system accesses the Internet through the HC-25wifi module and is connected to the mobile APP. The collected data is sent to the cloud in real time through the MQTT protocol, and then the mobile terminal obtains the data from the cloud to realize real-time monitoring, and the alarm can be directly dialed through the APP, so as to achieve the purpose of preventing or early detection of fire hazards and reducing losses.