MEMS加速度计性能批量测试系统设计（数据采集部分）
本次毕业设计主要完成MEMS加速度计批量测试系统中的数据采集部分。根据设计要求采用ADS1278作为模数转换芯片，以MSP430F5529为控制器设计了多通道（32通道）同步数据采集系统。通过硬件设计和软件设计，实现了1kHz采样速率下32通道的同步采样，且有效分辨率优于16bit。采集后的数据通过USB接口上传到上位机，通过上位机应用软件实现了MEMS加速度计批量测试系统的性能与功能评估。19478
关键词 MEMS加速度计，数据采集系统，MSP430F5529，ADS1278
毕业论文设计说明书（论文）外文摘要
Title The design of performance of MEMS accelerometers batch testing (data acquisition)
Abstract
Currently, MEMS accelerometers play an important role in vibration testing, attitude control, security alarm, consumer applications, action recognition,and state records etc.In order to improve the efficiency during the application process,it needs to batch test the performance of MEMS accelerometers produced or purchased to distinguish the product is qualified or meet the application requirements.So,it requires to design a MEMS capacitive accelerometers batch testing system to meet the relevant test requirements.The graduation design is mainly to complete data acquisition of MEMS accelerometer batch testing system.According to the design requirements,the design adopted ADS1278 as the analog-digital converter chip and MSP430F5529 as the micro-controller processor to design a multi-channel(32 channels) data acquisition system.Through the design of hardware and software,the system sample 32 channels synchronously under 1kHz sampling rate and the effective resolution is morn than 16 bit.The collected datas will be uploaded to the PC through USB interface.The PC application software can achieve the performance and functional assessment of MEMS accelerometer batch testing system.
Keywords MEMS accelerometer,data acquisition system,ADS1278
MSP430F5529
目 次
1 绪论 1
1.1 研究的意义与背景 1
1.2 国内外研究现状 1
1.2.1 MEMS加速度计 1
1.2.2 数据采集系统 2
1.2.3 模数转换技术 3
1.3 主要研究内容 3
2 数据采集系统总体方案设计 5
2.1 数据采集系统功能指标 5
2.2 数据采集系统的总体方案 5
3 数据采集系统硬件介绍 7
3.1 MSP430F5529最小系统 7
3.1.1 微控制器的选择 7
3.1.2 时钟与复位电路 9
3.1.3 软件调试接口JTAG 9
3.1.4 USB模块 11
3.2 电源模块 12
3.3 A/D转换电路 14
3.3.1 AD转换芯片的选择方案 14
3.3.2 ADS1278的电路连接 16
3.4电路板设计 20
3.4.1 初步设计以及遇到的问题 21
3.4.2 最终设计版 21