In the paper we designed a taxi meter realize of a meter taxi valuation statistics, using the system clock chip DS1302 achieved when the power-down unit and the system saved time and other information, the output 8-segment dit of the meter design can not only realize the basic valuation, but also according to day and night, halfway to wait to adjust the unit price. While not denominated as the clock for the driver when the comrades can facilitate.
The Design Of
Abstract
Taxi meter is the trading of both passengers and driver standards, it is an important indicator in taxi industry ,and it is the most important tool of a taxi.It relates to the interests of both transactions.Good performance of the meter, whether the vast number of friends and passengers, taxi drivers are very necessary.A good performance of the meter is very necessary to passengers and taxi drivers.Therefore, the research to taxi meter is very valuable.The design of the meter by the analog circuit and digital circuit have a larger scale,using a lot of device , resulting in high failure rate, difficult to debug, the mode switch need to use mechanical switches, mechanical switches over time will cause poor contact, function is not easy to achieve.The use of MCU design and relatively powerful, with less hardware and appropriate software can be easily complement each other to achieve the design requirements, and flexibility, can be programmed through software to perform additional functionality.Billing model for the switch can be easily programmed through the software.Avoiding the instability caused by mechanical switches.Data information can be understand at a glance, and even the finished product can easily modify the user interface, but also according to different customers using different interfaces.
基于单片机的出租车计价器设计
摘 要
出租车计价器是乘客与司机双方的交易准则，它是出租车行业发展的重要标志，是出租车中最重要的工具。它关系着交易双方的利益。具有良好性能的计价器无论是对广大出租车司机朋友还是乘客来说都是很必要的。因此，汽车计价器的研究也是十分有应用价值的。而采用模拟电路和数字电路设计的计价器整体电路的规模较大，用到的器件多，造成故障率高，难调试，对于模式的切换需要用到机械开关，机械开关时间久了会造成接触不良，功能不易实现。而采用单片机进行的设计，相对来说功能强大，用较少的硬件和适当的软件相互配合可以很容易的实现设计要求，且灵活性强，可以通过软件编程来完成更多的附加功能。针对计费模式的切换，通过软件编程就可以轻易而举的实现。避免了机械开关带来的不稳定因素。数据信息一目了然，并且即使是成品也可以方便的修改使用界面，更可根据不同的公司客户使用不同的界面。
该课题主要设计一款计价器，实现对出租车计价统计，采用时钟芯片DS1302实现在系统掉电的时候保存单价和系统时间等信息，输出采用8段数码显示管。本课题设计的计价器不但能实现基本的计价，而且还能根据白天、黑夜、中途等待来调节单价。同时在不计价的时候还能作为时钟为司机同志提供方便。
关键词：出租车计价器；多功能；AT89C52；软硬件设计
Keywords：taximeter;multifunction;AT89C52;software/hardware design
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引 言
随着生活水平的提高，人们已不在满足于衣食住行的享受，出行的舒适已受到越来越多人的关注。于是，出租车行业以低价高质的服务给人们带来了出行的享受。但总是存在着买卖纠纷困扰着行业的发展。而在出租车行业中解决这一矛盾的最好方法就是改良计价器。用更加精良的计价器来为乘客提供更加方便快捷的服务。