Intellective Applied Thermometer Design Based on DS1420

摘要

The AT89S52 SCM is the core of the entire system. The system includes temperature sensor module, data collection module, data processing module, keyboard number tube module, voice module, and LCD display module. In order to ensure the accuracy of sampling, it uses the temperature sensor's good performance to achieve the temperature and voltage transformation, and high-precision OP amplifier and then 12 bits samples. Later through a sequence of software operation, system realizes the alarm temperature pre-sets, LCD/LED display, voice playback, and other functions to achieve human-computer interaction.