基于加速度传感器和单片机的毕业设计

目录

摘要 ..................................................................................................... III Abstract ................................................................................................ IV 第1章绪论 . (1)

1.1 课题背景 (1)

1.2 课题目的与意义 (2)

1.3 课题研究现状 (3)

1.4 本文主要容及结构安排 (5)

第2章硬件设计 (6)

2.1 硬件器件的选择 (6)

2.1.1 SPCE061A单片机 (6)

2.1.2 MMA7260QT三轴加速度传感器 (10)

2.2 系统电路的连接 (11)

2.3单片机控制单元的硬件设计 (13)

2.3.1 输入/输出控制单元设计 (13)

2.3.2 模拟数字转换设计 (16)

2.3.3 DAC方式音频输出设计 (23)

2.4 传感器控制单元设计 (24)

2.5 本章小结 (26)

第3章软件设计 (27)

3.1 软件系统的开发设计 (27)

3.2 音频设计 (29)

3.2.1 音频处理方案 (29)

3.2.2 语音自动播放函数设计 (30)

3.2.3 语音文件压缩设计 (33)

3.3 I/O接口及A/D转换设计 (34)

3.3.1 I/O接口设计 (34)

3.3.2 A/D转换设计 (34)

3.4 主程序设计 (36)

3.5 本章小结 (40)

结论 (41)

参考文献 (43)

致 (45)

附录一： (46)

附录二： (64)

摘要

现代快节奏的生活和工作中，人们往往承受着巨大的压力。本设计拟采用SPCE061A开发板控制加速度传感器实现一个“出气宝宝”系统，在人们发泄情绪打击“出气宝宝”的时候，根据打击力度发出对应的“哭声”。这样，人们以娱乐的方式合理表达了攻击性实现了心理调节。

整个系统主要由SPCE061A开发板与加速度传感器两大模块来实现。外部的“击打”会使传感器输出模拟电压信号。61板通过I/O接口读入信号，经过A/D转换和程序处理，提取出能表征外部运动程度的量，并以此控制音频函数中的音量指数，改变扬声器的“哭声”大小。

系统设计的容大致可分为硬件设计与软件设计两部分。硬件设计主要包括外围电路的设计与连接，对I/O接口、A/D转换、音频输出的数据单元控制。软件设计主要包括自动声音播放函数、声音文件的压缩与连接、I/O接口与A/D转换的设置、主程序函数的编写等。

经过整个系统连接调试，摇动传感器，扬声器发出“哭声”，且音量大小与运动剧烈程度正相关，系统的基本功能实现。

关键词：SPCE061A；加速度传感器；I/O接口；A/D转换；音频

Abstract

With the fast pace of modern life and work, people are often under huge pressure.This design uses SPCE061A development board to control acceleration sensor to realize a "venting baby" system. When the emotional outburst people strike "venting baby", the system could give out corresponding "cries" according to the degree of blow. So, people express their aggressiveness in reasonable way to realize psychological adjustment.

The system mainly consists of SPCE061A development board module and acceleration sensor module. External "strike" will make sensor output analog signal. 61 board reads signals through the I/O interface, and extracts a value which can characterize the amount of movement level outside after A/D conversion and process. Then the value could control the volume index of audio function to change the sound size of the "cries".

The design of the System can roughly content of hardware design and software design. The hardware design includes outer circuit design and connection.We shoud also understand the performance of I/O port, A/D conversion and audio output. Software design includes automatic sound function, sound files compressed and connection, I/O interface and A/D conversion, main program function, etc.

Through the entire system commissioning, shaking sensors, speaker gives out "cries," and the volumeare positively related to the intensity of movement. Then we realize the basic function of the system.