AVR单片机在多回路数据采集器中的应用

Application of AVR single chip computer in a multi-channel data acquisition device

介绍了AVR高档单片机MEGA系列的性能和特点,提出了一种以ATmega128微处理器为核心器件的多回路、高精度、快速数据采集器的设计方案。采集器系统通过模拟开关对8路互感器输入的电流以及开关量输入的报警和状态信号进行采集,充分利用微处理芯片内A/D转换器进行数据处理和存储等,并给出了AD采集处理的硬件接口电路和软件编程实现。

The paper introduces the function and characteristic of AVR top grade single-chip computer MEGA series, and also proposes a design method of such a device that centers around ATmega128 and has the multi-channel,high precision and fast datacollection. This system uses analog swith to collect signals such as electric current, warning and state that derived from 8 path mutual inductance implement and switch amounts respectively. It also uses A/D converter inside the chip to handle and store up the data. At the same time, it gives the hardware interface circuit and software programming of AD acquisition and handle.