基于ATmega16的AD7705多通道模拟量采集系统设计

摘要

设计了以单片机ATmega 16为控制核心,以AD7705为前端采集芯片,以CPLD芯片EPM3064为逻辑开关阵列的32通道模拟量采集系统.给出了相应的硬件电路、驱动程序以及应用软件,指出了AD7705在实际应用中应当注意的一些问题.该采集系统结合测量仪器可以完成多点多参数的测量.%A 32-channel analog acquisition system, which has microeontroller ATmega 16 cored and the AD7705 been a front-end acquisition chip, and the CPLD EPM3064 been a logic switch array, was designed, including the presence of hardware circuit, the driver procedures and application software, and some problems the AD7705 encountered in practice. The testing results show that the system can complete multi-point and multi-parameter measurements after combining with other measuring devices.