本文为美国加州理工大学（作者：Gregory Samuel Pellegrino）的硕士论文，共141页。

设计了一种基于STM32单片机的数据采集系统。它的目的是提供一种透明和低成本的可替代商业数据采集系统，为教育工作者提供一种方法，让学生了解数据收集的过程以及所收集数据的使用。DAQ的设计目的是采集转速高达10000转/分的旋转机械数据，并通过USB2.0全速连接将数据发送到计算机。多任务代码是为DAQ编写的，以允许数据通过USB同时采集和传输。另外，还编写了数据采集和读取的MATLAB应用程序。DAQ与定制组装的NI CompactDAQ系统进行了比较。使用宾利内华达RK 4转子套件，同时使用这两种DAQ采集数据。通过与定制CompactDAQ相对比，对这些数据的分析展示了低成本DAQ的功能和局限性。

A data acquisition system (DAQ) was designed based on the use of a STM32 microcontroller. Its purpose is to provide a transparent and low-cost alternative to commercially available DAQs, providing educators a means to teach students about the process through which data are collected as well as the uses of collected data. The DAQ was designed to collect data from rotating machinery spinning at a speed up to 10,000 RPM and send this data to a computer through a USB 2.0 full-speed connection. Multitasking code was written for the DAQ to allow for data to be simultaneously collected and transferred over USB. Additionally, a console application was created to control the DAQ and read data, and MATLAB code written to analyze the data. The DAQ was compared against a custom assembled National Instruments CompactDAQ system. Using a Bentley-Nevada RK 4 Rotor Kit, data was simultaneously collected using both DAQs. Analysis of this data shows the capabilities and limitations of the low cost DAQ compared to the custom CompactDAQ.

1.  引言

2.  宾利内华达转子套件

3.  基于MATLAB的NI CompactDAQ采集

4.  STM32 USB数据采集系统硬件设计

5.  STM32 USB数据采集系统软件设计

6.  NI CompactDAQ与STM32 USB DAQ比较

7.  基于STM32 USB数据采集系统的实验

8.  讨论与结论

附录A数据采集扩展板原理图

附录B数据采集扩展板覆铜填充

附录C数据采集扩展板材料清单与注意事项

附录D STM32器件库API

附录E计算机库API

附录F MATLAB转子动力学代码

附录G STM32 USB数据采集系统任务与状态图

附录H如何使用STM32 USB数据采集系统

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