Temperature, humidity, and human production and living have a close relationship, especially in the fields of medicine, electronics, aerospace, food fermentation, and agricultural production, where the requirements for temperature and humidity are particularly strict. They are the most common and basic parameters. For example, various industries such as machinery, electronics, petroleum, and chemical industry widely require real-time detection and control of temperature and humidity. With the improvement of people's living standards, people are increasingly concerned about their living environment. The changes in temperature and humidity in the air have a direct impact on human comfort and mood. Therefore, it is necessary to detect and control temperature and humidity.
Using the STC89C52 microcontroller, the design of a temperature and humidity monitoring and alarm system can instantly and accurately respond to the temperature and humidity changes inside and outside the greenhouse. It can achieve various control modes, such as heating to a specific temperature, cooling to a specific temperature, and maintaining constant temperature within the temperature limits. The same is true for humidity control. Applying this system to the greenhouse undoubtedly provides a more suitable environment for plant growth. For greenhouse cultivation, flower beds, and flower cultivation, it is necessary to install temperature and humidity devices in specific environments to monitor them. This system can timely and accurately reflect the changes in indoor and outdoor temperature and humidity and can meet the requirements of temperature and humidity control.
Keywords: temperature, humidity, monitoring, STC89S52, 2013, graduation design thesis