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论文编号:ZD1201 论文字数:23485,页数:58 附原理图
摘要
在繁华的城市中，随处可见拥挤的汽车在马路上行驶。而那些公交车经常会出现这样的现象，比如说前压后撵，这样既不能安全行车，又不能准时正点的到达站点，无形中影响了乘客的安全和时间性。而当人们为治理此问题靠人工来传送信息，不仅浪费了人力，物力，还大大浪费了时间。为此，本次设计了一种产品，名为无线摇控打卡器。
它是以单片机AT89C51为核心，此微控制器将对整个系统发出控制信号。在本次设计中，选择了台湾生产的PT2262和PT2272系列芯片做为发射接收装置的芯片。此装置的功能是：当车载发射端发出信号时，在主机一端收到此信号，并做相应的处理，把数据显示并打印出来。
用本装置，可以显示出公交车到达的时间和车次，用以控制公交车前压后撵，保证公交车的正常行驶。既保障了安全，又保证了正点到达站点的时间。对乘客而言，不仅提高了安全系数，而且保证了一个准时准确的短途行程。
关键字: 单片机AT89C51 徽控制器 无线收发
Summary
In prosperous city, everywhere it is thus clear that the crowded automobile ups north route to drive in the street.But those buses usually will appear such phenomenon, for example , thus buses can''t drive in the street safely,and can''t arrive to the station on time , affected the passenger''s safety and time invisibly.But when people wonder to manage this problem that depending on the deliver by artificial information, not only wasted the manpower, material resources, but also wasted time consumedly.Hence, I designed a kind of product, named the lead-in control device.
It is to take a machine AT89C51 as the core, this MicroController Unit will control the signal which is sent out from the whole system.In this design, PT2262 and PT2272 series chips that made in Taiwan are used as to shoot the chip of receive the device.The function of the equip is:When the car send out the signal, the host receives this signal, and do the homologous processing, make the data printed out also.
Using this device, it displays time and the NO. of the bus , in order to control the buses, guaranteeing that the bus drives normally.Since guaranteed the safety, and then guaranteed arrive to the station on time.To the passenger, not only raised the safe coefficient, but also guaranteed an on time accurate and short way route of travel on time .
The key words: AT89C51 MicroController Unit lead-in control device.
目 录
目 录 1
第一章 论 绪 2
第二章 方案论证 4
2.1 微型计算机的选择论证 4
2.2 MSC—51系列单片机选择 6
2.3 日历时钟芯片的选择 8
2.4无线收发器芯片选择 8
第三章 单片机系统硬件设计 16
3.1 89C51的设计 16
3.2 I/O接口的扩展 22
3.3 无线收发器选择及电路原理 26
3.4日历时钟芯片的接口设计 36
3.5显示电路的设计 42
第四章 单片机系统软件设计 44
4.1单片机系统软件编程流程 44
4.2 程序流程图 45
结束语 47
致 谢 48
参考文献 49
附录 50
