Abstract
To realize the real-time temperature measure and control rapidly and accurately in the incubator, a temperature measurement, control and display system is designed in the paper by using of the smart temperature sensor DS18B20 and the microcontroller AT89S52. The output mode of DS18B20 is serial in one-way, and its main function is to transform the temperature into the digital data and store the control word of the output conversion accuracy, which is available for data processing of single-chip microcomputer. In the actual temperature measurement it doesnt require any extra components including backup power supply, and the user can also choose the resolution. It is easy to realize multi-point measurement, connect and extend the real-time measure data. The system circuit can be applied to any field which needs multi-point measurement and real-time detection.
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