基于单片机的汽车行驶状态记录仪的设计分解.doc

基于STC90C51的汽车行驶状态记录仪的设计 摘要：随着汽车制造模块化、平台化技术的飞速发展，汽车普及率逐年升高，汽车在人们的整个社会生活中扮演着越来越重要的角色。然而随着汽车保有量的逐年升高，道路交通事故的数量也随之上涨，因此汽车的主动及被动安全装置倍受人们重视。本毕业设计主要通过NEO-6M芯片收集GPS卫星的数据来获取车辆的行驶状态信息，采用STC90C51作为主芯片解析数据并处理所获取的信息，通过LCD1602液晶屏显示状态信息，通过LED灯和蜂鸣器来传达警告信息。 本设计被称为汽车行驶状态记录仪，可以让汽车驾驶员获取实时行驶状态信息，如实时时间、地理坐标、实时速率、行驶方向等。于此同时，能够将这些信息实时循环存储到EEPROM芯片AT24C02中，方便随时调用。这些信息在发生事故后可以调取出来，作为证据保障受害人权益。汽车行驶状态记录仪，又被称为汽车黑匣子，也是一个主动安全装置，当汽车超速时可以通过LED灯和蜂鸣器向驾驶员发出警告。 关键词：STC90C51；汽车行驶状态记录仪；GPS；NEO-6M；汽车黑匣子 D Driving State Recorder Based on STC90C51 Abstract: With?the?rapid?development?of modularization of automobile manufacturing，prevalence of automobiles has been increased year by year. In the whole human social life automobile plays a more and more important role. However, the quantity of road traffic accident has been risen larger and larger along with the increase of the number of vehicle holdings. For this reason,active and passive safety devices of car have been attached great importance。Collecting data from GPS satellites by the chip called NEO-6M, this graduation design with the MCU called STC90C51 which can analyze and process data, can get the driving state information of the car. It displays driving state information by LCD1602 and conveys warning information by LED light and buzzer. Drivers can get real-time driving state information by this graduation design called driving state recorder,such as the real time, geographical coordinate, real-time speed, driving direction and so on. At the same time, it can store these information into EEPROM chip called AT24C02 in time, which makes it convenient to call at any time. In the event of traffic accidents, it can also get recording information obtaining from the recorder for traffic accident’s evidence, safeguard the rights of the victims. Giving a warning to the driver by LED light and buzzer when it is overspeed, driving state recorder also known as automobile black box is also an active safety device. Key words: STC90C51;Driving St