Design of Cold Storage Temperature Detection and Control System Based on MCU
Abstract: The design is based on STC89S52 and storage temperature detection system based on automatic control. Is mainly composed of a power supply, a system control circuit, temperature detection circuit, the temperature display circuit, executing circuit, alarm circuit and so on, which is based on STC89S52 controller, the temperature detection in cold storage using DS18B20 temperature sensor values, calculated output and display the current cold storage temperature value by the LCD controller and the auxiliary circuit; if the measurement to cold storage temperature reaches the set temperature of the upper and lower limit value, the system control signals to complete the prompts issued through STC89S52, at the same time to start or stop the execution circuit, the temperature reaches the set range. The cold storage temperature control system is simple in structure, good control effect.
Key Words: Cold storage; Single chip; Temperature measurement and control
目 录