The Design of Multi-channel Temperature Acquisition and Control System Based on Digital Temperature Sensor
Abstract: Along with the rapid development of modern information technology, temperature measuring and control system become more and more important in industrial, agriculture and daily life. Because of its great influence on people’s life, design and research of temperature acquisition and control system has a great significance. It uses MCU as data process and control unit, and uses MCU to control digital temperature sensor which transmits data to MCU through single bus. With high accuracy and good exchange capacity ,DS18B20 can card temperature data directly,and tranmit information throngh 1-wire bus.So communication becomes more convenient and with high ability to resist interferes.DS18B20 multiple temperature measurement system can save a lot of cables compared with the multiple temperature measurement system consisting of traditional sensors.It has a great value and strong real-time.
Key Words:Single chip computer; Multi-channel temperature acquisition; DS18B20