Design of Low Power Thermometer
Abstract: Through the comparison of many schemes, this design analyzes the advantages and disadvantages of each different scheme. Among them, through analyzing and constructing each module of the core components to get the scheme satisfying the certain requirements is the main methods. This design transmit the temperature signal collected by components DS18B20 to display it on LCD 1602 liquid crystal display. And when the collected temperature value out of the scope of presetting, the buzzer alarm. When it is within the scope, just display it on the LCD, and the resolution is 0.5 ℃. Calendar clock also display on the LCD and each value bit can be modified. This design has the advantages of simple structure, low power consumption, etc. Mainly used in collecting inside room temperature, household central air conditioning temperature, etc.
Key Words: Single chip microcomputer; Thermometer; Alarm; LCD display
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