1、基于单片机的汽车测速及防盗报警装置 专业班级： 学生姓名： 指导老师： 职称： 摘要 汽车的舒适性、 安全性， 操控的简便性， 参数监测自动化是汽车设计的重要领域， 是提升汽车品质和市场竞争力的重要方面。本论文拟采用微处理器加外围信号处理、传 输等硬件系统及相应的软件程序实现汽车车速实时检测与控制， 帮助驾驶员了解车辆行 驶速度，有效防止事故发生，当汽车与障碍物的距离小于设定值时以及当有人盗窃汽车 时，通过语音报警模块发出报警声，有效避免车内贵重物品和汽车丢失。本文通过对交 通事故原因的调查，得出超速驾驶的危害，分析了超速驾驶的原因，在对现阶段常用的 测速设备分析的基础上，提出了采用 stc8
2、9c52 单片机来完成测速的方法。本论文的课 题是基于单片机的汽车测速及报警装置， 并介绍了利用单片机系统实现对汽车进行实时 监测，给出了单片机控制系统和软件设计的基本思想，采用 stc89c52 ，mxc6202 及报 警芯片 lx110c 实现了汽车测速及超速报警。 关键词：单片机 汽车测速 STC89C52 LX110C Vehicle speed and anti-theft alarm device based on MCU ABSTRACT Comfort, safety, ease of handling, parameter automatic monitoring is an
3、 important field of car design, is important to enhance the vehicle quality and market competitiveness. This thesis uses the microprocessor and peripheral signal processing, transmission and other hardware system and corresponding software to achieve real-time detection and control of vehicle speed,
4、 help the driver about vehicle speed, prevent accidents, when the car and the obstacle distance is less than the set value and when someone stealing a car, send out alarm sound by the speech alarm module, effectively avoid the valuables and the car lost. In this paper, through the investigation of t
5、raffic accidents, harm that speeding, analyzes the reasons for speeding, based on analysis of the current commonly used measurement equipment, proposed a method using STC89C52 chip to complete the speed. The purpose of this paper is the vehicle speed and alarm device based on, and introduces how to
6、realize real-time monitoring of vehicles by using STC89C52 SCM system, gives the basic thinking, SCM control system and software design, mxc6202 and alarm chip lx110c the car speed and overspeed alarm. Keyword: MCU car speed STC89C52 LX110C 目录 1绪论 1 1.1 选题意义 . 1 1.2 国内外现状研究 . 1 1.3 设计目标及主要内容 . 3 1.3.1 设计目标 . 3 1.3.2 主要内容 . 3 2系统总体方案设计 4 2.1 系统简介 . 4 2.2 主要电路器件选型 . 4 2.2.1 单片机选型 . 4 2.2.2 加速度传感器选型 . 5 2.2.3 测速传感器选型 . 6 2.2.4 显示屏选型 . 8 2.2.5 报警芯片选型 . 9
