【摘要】 介绍了基于CAN总线通信协议的多路高精度模拟量采集电路的软硬件设计与实现。采用了A/D转换芯片AD1674,通过软件分时的方法采集24路12位模拟量信号,特别适用于航天器地面测试;同时模拟量采集电路使用了CAN总线通信方式,实现了采集卡的灵活控制和数据交换。软件采用了C语言编写,提高了开发的效率。更多还原

【Abstract】 The design and realization of software and hardware of multi-channel high precision analog-data-acquisition circuit based on CAN bus communicating protocol is introduced. In this paper, the circuit uses A/D transferring chip AD1674 and acquires 24-channel 12-bit analogy signal by the way of using software to acquire the channel one by one, which is especially helpful in ground test for aircrafts. And also, the circuit communicates by CAN bus, which will be more agile in control and data exchange. In order to improve efficiency, the software is programmed by C language.更多还原