基于单片机的出租车计价器设计
摘要：现在各个城市出租车行业都已普及，因此出租车计价器的技术已经成熟，但是出租车计价器的市场还具有广阔的前景。出租车的计价器是单片机的典型应用。基于单片机的定时器是由单片机和外围电路。利用AT89C51单片机的全双工串行口通信电路，外部显示和数码管扩展并行I/O接口功能，可以实现单位价格，起步价，退货价格，郊区的价格，晚上的价格，不同的价格低的价格每个阶段，显示修改时间和打印准考证。通过PO端口和外部电路以AT89C51连接在一起，提供语音，可以提供语音功能。实际运行里程和计时器功能量的价格成正比。现在人们不出门在电脑上的手机，可以找到自己的位置，只要他们的目的地输入，会有离你最近的出租车司机收到你的信息，现在的嘀嘀打车，快的打车等等，方便我们出行。主要研究内容包括：电源，开关按钮，程序控制部分，显示部分的时间和价格。
关键词：出租车计价器；单片机；AT89C51
The taxi meter design based on single chip microcomputer
Abstract:Now is available in every city taxi industry, so the taxi meter technology is mature, but the meter taxi market also has a broad prospect.The meter taxi is typical application of single chip microcomputer. Based on single chip microcomputer timer is composed of single-chip microcomputer and peripheral circuit. Using AT89C51 full duplex serial port communication circuit, external digital tube display and extend parallel I/O interface function, can realize the unit price and fare, return of the price, on the outskirts of the price, the price of the night, the different price low price at each stage, modification time and print your admission ticket. Through the PO port and the external circuit AT89C51 together, provide voice, can provide voice function. Actual mileage and price is proportional to the amount of timer function. Currently on the main function of the meter taxi reset function of data market, day/night conversion function, data output function,evaluate, and other functions, with the development of social science and technology, now people don't go out on a computer's mobile phone, you can find their own position, as long as their destination, there will be the nearest taxidrivers receive your information, now the origins of a taxi, a taxi fastand so on, convenient for us to travel. Main research contents include: power supply, switch button, program control part, display part of the time and price.
Keywords:The taxi meter; Single chip microcomputer; AT89C51
目录
第一章 绪论
一、课题的背景及意义.................................................................................................5
二、课题研究的内容.....................................................................................................6
三、出租车计价器的概述.............................................................................................7
四、单片机的概述.........................................................................................................7
第二章 系统的总体设计
一、 设计思路...............................................................................................................8
二、 集中控制...............................................................................................................9
三、 单元控制................................................................................................................9
四、 设计任务和要求...................................................................................................10
第三章 系统的硬件总体设计
一、单片机的介绍.........................................................................................................11
二、设计思路...................................................................................................................11
三、硬件设计.................................................................................................................11
第四章 系统的电路设计
一、系统电路设计思路.................................................................................................23
二、分析电路的设计理念.............................................................................................23
第五章 系统的软件设计
一、模块介绍................................................................................................................28
二、系统软件设计........................................................................................................29
三、分析系统软件设计思路.........................................................................................29
第六章 系统的调试
一、软件调试.................................................................................................................31
二、硬件调试.................................................................................................................31
第七章 总结与展望..............................................................................................39
小结并致谢..................................................................................................................40
参考文献.......................................................................................................................41
附录（程序）..............................................................................................................44
参考文献
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