出租车计价器的设计自动化毕设论文.doc

本 科 毕 业 设 计 论 文 题 目： 出租车计价器的设计 系 别： 电气与信息工程 专 业： 自动化 班 级： 自动化701 学号： xxxx 学生姓名： xx 指导老师： xx 2015年6月 摘 要 随着出租车行业的发展，出租车已经是城市交通的重要组成部分，从加强行业管理以及减少司机与乘客的纠纷出发，具有良好性能的计价器对出租车司机和乘客来说都是很必要的。 本电路以AT89S51单片机为中心，本电路中用模拟开关测距，实现对出租车计价，采用AT24C02实现在系统掉电的时候保存单价，输出采用8段数码显示管显示行驶的总里程和总金额。本文模拟出租车计价器的设计，进行里程的显示，预设起步价和起步公里数；行程按全程收费，有复位功能和启动功能，启动后，开始计价。 本文采用单片机进行设计，可以用较少的硬件和适当的软件相互配合来实现设计要求，且灵活性强，可以通过软件编程来完成更多的附加功能。软件采用C语言编写，通过调试，论文完成了任务书的要求，达到了预期目标。 关键词：出租车计价器，单片机AT89S51，断电保护，8段数码显示管 ABSTRACT As the taxi industry development, the taxi is an important part of urban traffic from strengthening trade, and to reduce the driver and passengers management, based on the dispute has good performance of the meter taxi drivers and passengers alike is very necessary. This electric circuit takes AT89S51 monolithic integrated circuit as a center, and in this electric circuit to replace with analog switch to measure the range, which realizes the rental car valuation. The use of AT224C02 is to preserve the unit price when the present system power is failure. The output uses 8 sections of digital display tubes, demonstrating that goes the total course and the aggregate amount. The design of simulated rental car mileage fare meter, the meter can demonstrate the course of rode, preinstall start price and start distance in kilometer. The traveling schedule realizes according to the entire journey, attaching the reset function and the start function. The fare meter starts the valuation after the beginning. The paper use the monolithic integrated circuit to carry on the design and use the little hardware and the suitable software coordination to realize the design mutually and flexibly, furthermore we can complete the more additional functions through the software programs. Software are writte