东北林业大学
毕业设计任务书
基于单片机的汽车超速报警系统设计
基于单片机的汽车超速报警系统的设计
摘要
近年来，随着现代汽车控制技术和高速公路的飞速发展，在世界特别是发达国家，无论是运输业还是个人，汽车都已成为长距离运输的主要交通工具。汽车在公路上行驶时，通过GPS定位，当汽车的行驶速度超过该公路所规定的最高行驶速度时，蜂鸣器报警，并通过语音提示，提醒驾驶员减速。
本设计从驾驶员自身安全角度出发，设计了一种检测车辆超速的报警系统。当车辆处于行驶状态中，该系统通过速度传感器时刻监测机动车辆速度。在实时监测和自动控制的单片机应用系统中，单片机往往是作为一个核心部件来使用。此设计就是一种利用51单片机对机动车超速行驶情况进行蜂鸣报警的系统。该系统结构简单，可靠性高，操作方便，可广泛应用于摩托车、汽车等机动车辆。该设计详细介绍了系统的总体设计方案，给出了界面模块与89C51接口电路，系统硬件电路及外围设计电路，通过LCD显示出来。
关键词: 51单片机；汽车超速报警器；语音传感器；LCD显示
Monolithic integrated circuit-based automobile
overspeed alarm system design
Abstract
In recent years, with the modern auto control technology and the rapid development of highway, in the world, especially in developed countries, whether shipping or personal, cars have become the main long-distance transport vehicles. When the car driving on the highway, through the GPS positioning, when the car speed is more than the highest speed specified in the road, the buzzer alarm, and through the voice prompt, and remind the driver to slow down.
This design from the Angle of the driver's own security, we design a test vehicle overspeed alarm system. When the vehicle in the driving state, the system through the speed sensors to monitor vehicle speed. In real-time monitoring and automatic control of microcomputer application system, the microcontroller is often used as a core component. This design is a kind of vehicle speeding is to make use of 51 single-chip buzzer alarm system. The system has simple structure, high reliability, co
nvenient operation, can be widely used in motorcycles, automobiles and other motor vehicles. This design detailed introduces the system's overall design scheme of interface module and 89 c51 interface circuit is given, and the system hardware circuit and peripheral circuit design, through the LCD display.
Key words: Single chip microcomputer; Automobile overspeed alarm; Voice sensor; The LCD display
目录
摘要
Abstract
1前言 (1)
1.1 汽车超速报警系统研究目的及背景 (1)
1.2 汽车超速报警系统在国外的研究现状和发展趋势 (1)
1.3 汽车超速报警系统的主要容 (2)
2汽车超速报警系统设计方案的选择 (3)
2.1 设计要求 (3)
2.2方案选择 (3)
3汽车超速报警系统硬件设计 (4)
3.1 测速传感器的构建 (4)
3.1.1 测速传感器的选择 (4)
3.2汽车测速传感器的工作原理 (4)
3.3主控模块 (6)
3.4系统总体结构框图 (7)
3.4.1电源单元 (8)
3.4.2 光电耦合器单元 (8)
3.4.3 蜂鸣报警单元 (9)
3.5电路的连接 (9)
3.5.1 霍尔传感器与单片机的连接 (9)
汽车智能防盗系统3.5.2 单片机与报警器连接 (10)
3.5.3单片机与LCD显示电路连接 (10)
3.6 监测车辆速度 (11)
3.6.1 GPS车速检测 (11)
4汽车超速报警系统软件设计 (13)
4.1 主程序 (13)
4.2 子程序 (14)
4.2.1 报警子程序 (14)
结论 (15)
参考文献 (16)
致 (17)