基于AVR单片机的超低功耗微型温度记录仪

AVR Based Mini Temperature Logger with Ultra-Low Power

本文介绍一种低成本、超低功耗微型温度测量记录仪的设计。以ATtiny24单片机为核心,通过I2C总线连接PCF8563时钟芯片和AT24C1024B串行E2PROM,温度传感器采用203AT热敏电阻。可利用计算机设置当前时间、采样间隔、上传模式、报警阈值,发送上传指令,对上传数据进行存储、分析和打印。在保证功能和可靠性前提下,设计中充分考虑了记录仪在体积、功耗、成本等方面的特殊要求。

This paper introduces a mini temperature logger with low cost and ultra-low power. It is based on ATtiny24 microcontroller which communicates with PCF8563 clock chip and AT24C1024B serial EEPROM through I^2C interface. The 203AT NTC thermistor is used as the sensor. A PC could be used to set current time. The sampling interval, transfer mode the alarm threshold, and the uploading instruction can be set by a PC.