Abstract
Temperature measurement system is widely used in industrial monitoring, process control, intelligent home appliances and other fields. The traditional temperature detection method is to use the analog sensor, such as thermocouple or thermal resistance. This traditional temperature measurement system includes signal sampling circuit, amplifying circuit and A/D conversion circuit, which finally obtain the temperature digital signal. This kind of complex circuit leads to the weak anti-interference ability, which affects the reliability of the system. In this paper, a new design of digital temperature measurement system using digital temperature sensor AD7417 was presented. The sensor is connected to a central processing unit (CPU) via digital bus and the temperature value is displayed by LED. Practical application shows that the temperature measurement system is stable and reliable with strong anti-interference ability.
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