"无尘间温湿度控制系统设计与实现"

生活. People usually use thermometers and hygrometers to collect temperature and humidity, and manually control temperature and humidity through heating, humidifying, ventilating, and cooling devices. However, this method has low control accuracy, poor real-time performance, and high labor intensity for operators. Some users use semiconductor diodes as temperature sensors, but due to their poor interchangeability, the effect is not ideal. In some industries, high requirements for temperature and humidity control are essential, as failure of components due to excessively high or low temperature, or accidents caused by excessively high humidity can impact the reliable operation of systems and even endanger the safety of local operators. Therefore, implementing monitoring and control of temperature and humidity is crucial. This design specifically targets a dust-free laboratory and presents a single-chip-based multi-point temperature and humidity control system. The control system mainly utilizes chips such as AT89C51, LCD display, and DHT11, and provides a detailed introduction to its composition and hardware circuitry, explaining the working principle and design method of the temperature and humidity control system. Through online debugging of software and hardware, the system successfully achieved temperature and humidity signal detection and control, meeting the expected requirements. Keywords: temperature and humidity control, microcontroller, dust-free laboratory, DHT11 sensor.