摘要MEMS加速度计已广泛应用于汽车电子、汽车导航系统、石油测井和航空航天等领域。在MEMS加速度计研制及应用过程中为提高测试效率，需对MEMS加速度计进行批量性能测试。为此，开展了MEMS加速度计批量测试系统的设计工作。68323

本文针对测试系统中的数据通信和上位机部分进行设计，完成下位机中USB接口的软硬件设计和基于图形化编程工具LabVIEW的上位机应用软件的开发工作。满足了测试系统多通道（32ch）、高精度（24bit）、较高采样率（几ksps）的要求。测试结果表明，下位机通过USB能将采集到的数据实时可靠地传送至上位机，上位机能实现对测试过程的监测，测试数据的存储及处理等过程。

毕业论文关键词：  MEMS加速度计，数据采集系统，LabVIEW，USB，MSP430

毕业设计说明书（论文）外文摘要

Title A data acquisition System Design for MEMS acceler-ometers（Data communication and PC application ）

Abstract

MEMS accelerometers are widely used in car electronics, car navigation systems, oil well logging and aviation industries. In order to improve the efficiency of the application process, have to put MEMS accelerometer into a bulk performance testing. For this reason, design a MEMS capacitive accelerometer batch test system to meet the relevant test.

The data communication and PC application parts of the testing system were studied in this paper. I finished the software and hardware design of USB interface and completed the PC application design which was based on a graph-oriented programming tool named LabVIEW. The requirements of multichannel (32ch), high accuracy (24bit), higher sampling rate (several ksps) were met. The test results showed that the data collected can be reliably transmitted to the PC through USB, the PC application can achieve the monitoring of the testing process and finish the storage and handling process of the testing data.

Keywords:  MEMS accelerometer data， acquisition system ，LabVIEW，USB，MSP430

目   次

1  绪论 1

1.1  课题研究背景 1

1.2  数据采集系统及其发展 1

1.1.2  数据采集系统的分类与现状 2

1.2.3  模数转换技术 3

1.3  论文组织结构 4

2  数据采集系统方案设计 5

2.1  通信要求及通信协议选择 5

2.1.1  通信要求的分析 5

2.1.2  常见的数据通信总线 5

2.2  USB接口芯片 6

2.2.1  USB接口芯片类型 6

2.2.2  USB接口芯片选择 7

2.3  上位机软件开发 7

2.3.1  常见上位机开发环境介绍及选择 7

2.3.2  LabVIEW简介 8

2.4  总体架构 8

本章小结 9

3  下位机USB模块设计 10

3.1  MSP430F5529中的USB硬件模块 10

3.1.1  USB电源模块 10