基于MSP430F149的防疲劳驾驶报警系统的设计(附实物图,程序清单)(论文14000字)
摘要：现今社会，私家车越来越多，汽车已经成为了出行的必须交通工具，数量的增多也伴随着很大的隐患，越来越多的交通事故也随之出现，我们的生命安全也在面临着考验。交通事故的频发，也给我们敲响了一个警钟。根据多方面的调差，疲劳驾驶造成的事故占了交通事故中很大的比例，消无声息的成为了交通杀手，所以需要我们给予重视，这不仅是对自己也是对他们的一种负责，当足够重视后，便能够很大一部分降低交通事故的发生，以及对于生命安全驾驶员安全的一种保护。所以设计出一个降低交通事故的警报仪器是很实用很符合生活需要的。
通过这方面的思考，本课题设计了这个防疲劳驾驶系统。这个防疲劳驾驶系统由单片机MSP430F149、蜂鸣器报警电路、ADXL345重力加速度传感器电路、继电器控制电路和电源电路组成。通过压力传感器采集座椅的压力，来全方位的计算驾驶者的驾驶时间。通过一个单片机对采集的数据进行一定的分析与判断，根据，之前的设定的值来判断司机是否处于疲劳驾驶的状态之中。如果司机处在一个疲劳驾驶的状态，单片机就会控制蜂鸣器报警，提醒驾驶司机停车休息。
关键字:MSP430F149；疲劳驾驶；单片机
Anti-fatigue Driving Alarm System Based on MSP430F149
Abstract：Nowadays, with more and more private cars, cars have become the necessary means of transportation for travel. The increase in the number of cars is accompanied by great hidden dangers. More and more traffic accidents also appear, and our life safety is also facing a test. The frequent occurrence of traffic accidents has also sounded an alarm bell for us. According to incomplete statistics, traffic accidents caused by fatigue driving account for a large proportion of traffic accidents, and fatigue driving has become a major killer, so we need to pay attention to it. This is not only a responsibility for themselves, but also a responsibility for them. When enough attention is paid, it can reduce the occurrence of traffic accidents, as well as for the safety of drivers. A protection. Therefore, designing an alarm instrument to reduce traffic accidents is very practical and in line with the needs of life.
Through this consideration, this topic designed the anti-fatigue driving system. This anti-fatigue driving system consists of MSP430F149, buzzer alarm circuit, ADXL345 gravity acceleration sensor circuit, relay control circuit and power circuit. Pressure sensor is used to collect the seat pressure, so as to calculate the driving time of the driver. Through the analysis and judgment of the collected data by single-chip computer, the driver can be judged whether there is fatigue driving. If the driver is in a fatigue driving state, the singlechip will control the buzzer alarm and remind the driver to stop and rest.
Key words：MSP430F149;Fatigue Driving; Single Chip Microcomputer
目录
1 前言 1
1.1 什么是疲劳驾驶 1
1.2 疲劳驾驶与交通事故 1
1.3 怎么预防疲劳驾驶 1
1.4 小结 1
2 本设计的总体思路及其理念 2
2.1方案的设计思路 2
2.2单片机芯片的选择 2
2.2.2声音报警电路方案的选择 2
2.2.3倾角传感器的选择 3
3 硬件电路的设计 4
3.1系统的功能分析及体系结构设计 4
3.1.1系统功能步骤 4
3.1.2系统总体结构 4
3.2模块电路的设计 4
3.2.1 MSP430F149单片机核心系统电路设计 4
3.2.2 5V电源电路设计 8
3.2.3 蜂鸣器报警电路（低电平有效）设计 9
3.2.4按键电路设计 10
3.2.5 ADXL345倾角传感器模块电路设计 10
3.2.6 LED信号指示灯电路设计 11
3.2.7 5V继电器控制电路（低电平有效）设计 12
3.3对于本设计的具体器件测试： 13
4 系统软件设计 14
4.1 编程语言选择 14
4.2单片机程序开发环境 14
4.3 IAR Embedded Workbench软件开发流程 15
4.5 Lite-FET-Pro430-Elprotronic程序烧录软件介绍 19
4.6 MSP-FET430UIF程序烧写模块介绍 19
4.7 Lite-FET-Pro430-Elprotronic程序流程图 21
5系统焊接与调试 22
5.1 电路焊接 22
5.2 系统调试 22
5.2.1 系统程序调试 23
5.2.2硬件测试 23
5.3 实物测试 23
6 结论 25
6.1 总结 25
6.2 展望 25
参考文献： 26
附录： 27
IO_Clock函数： 27
adxl345函数： 28
1602函数： 36
致谢 42
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