"基于STC89C52单片机的环境温湿度光照度监测装置设计与实现"

he environment, including temperature, humidity, and light intensity, so that people can quickly obtain information and make corresponding adjustments. This paper adopts the STC89C52 single-chip microcontroller as the control core, and realizes the hardware circuit design such as temperature and humidity detection, light intensity detection, and LCD real-time display circuit. Due to the fact that the implementation of its functions is mainly completed through software programming, the complexity of the hardware circuit is reduced, and its cost is also reduced. It can also complete tasks that are difficult to achieve with complex hardware circuits. Equipped with new miniature low-power sensors, the temperature sensor is 18B20, the humidity sensor is DHT11, and the light intensity sensor is TSL2561. It realizes the functions of collecting, storing, and displaying the environment temperature, humidity, and light intensity. In addition, this system also has an alarm function. When the data collected by the sensor is not within the range set by the user, the buzzer will sound an alarm to remind the user. The system runs reliably, has a simple structure, and has a high cost performance ratio. Keywords: STC89C52 single-chip microcontroller, temperature and humidity, light intensity, liquid crystal display, alarm.