冲击加速度信号采集记录装置设计
毕业论文关键词 存储测试技术 采集记录装置 MSP430F2618 AD7980 N25Q00AA Title Design of Shock Acceleration Signal Acquisition and Storage Device Abstract MEMS inertial sensor or MEMS inertial system, developed for missile guidance or other applications, frequently need to measure their capacity against high overload through high impact test. In order to evaluate the anti-overload capacity quantitatively，the application of memory test technology can conduct a comprehensive description of the acceleration of the measuring devices or systems in the test process. That has a greater advantage, when compared with the traditional measurement method. For the transient impact acceleration signal and the conditions of high impact test, a transient impact acceleration data acquisition and storage device was introduced in the paper with small volume and low power consumption, which is based on memory test technology. MSP430F2618 was used as microcontroller in the device, serial NOR FLASH chip N25Q00AA as data storage, and AD7980 as the analog / digital converter. The system has features show by following: a sampling rate of 100kHz, more than 5 minutes acquisition time and the sampling resolution of 12 bits. That communicates with PC through RS-422 to upload the data and to receive command words. Keywords memory test technology， acquisition and storage device， MSP430F2618， AD7980，NOR FLASH
目次
1 绪论.. 1
1.1 课题来源、研究目的及意义 . 1
1.2 国内外研究现状 1
1.3 本课题主要研究内容 . 2
2 系统总体设计 . 4
2.1 系统设计技术指标 .. 4
2.2 系统总体设计 . 4
2.3 系统总体组成及工作流程 .. 6
3 系统硬件电路设计 8
3.1 MEMS 加速度计 8
3.2 数据采集模块设计 .. 8
3.3 数据储存模块设计 12
3.4 主控模块设计 .. 14
3.5 与上位机的通信模块设计 17
3.6 电源模块设计 .. 18
4 系统软件设计 20
4.1 系统软件设计概述 20
4.2 系统初始化 22
4.3 采样启动的触发方式 .. 22
4.4 擦除模式的设计 . 24
4.5 乒乓法则下的采集存储缓冲机制 24
4.6 FLASH 数据存储设计 .. 26
5 系统调试与实验 ..28
5.1 原理样机安装调试 28
5.2 数据采集模块信噪比的评价 .. 29
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