微控制器与射频通信的智能公交电子站牌系统设计+电路图+程序

摘要目前，随着私家车的拥有量逐年递增，城市地面交通系统正面临着巨大的压力，为了缓解交通压力，政府加大了对公交系统的投入，并且鼓励市民乘坐公交车出行，现在公交车已经成为大众出行的主要交通工具，然而由于路况拥挤等因素经常出现公交车不能及时到达站点，耽误乘客出行，给乘客带来了极大的不便。37731
本文对比了目前常用的公交站牌显示系统，多数为利用GPS和GPRS实现公交车的定位和站牌之间的通信，这种站牌虽然实用，但是成本较高，会产生持续的通信费用。所以本文提出了一种新型智能公交电子站牌系统，它是为了方便乘客出行而设计的一款智能化设备，该系统结合NRF905短距离无线通信模块和YL800IL型远距离无线通信技术，完成了对公交车的定位和站牌之间通信的功能。通过无线模块的组合和微控制器的控制，实现显示离站牌最近的各路公交车到达该站牌距离的功能。此站牌以价格低廉的无线通信模块取代了传统站牌的GPS和GPRS部分，实现了可靠性高，低成本，低功耗，高效率的智能电子站牌系统。
毕业论文关键字：电子站牌无线通信车辆定位站牌显示
Abstract Now, with the increasing number of the cars, urban public transport systems are facing great pressure; to tackle this problem, buses have become the main means of transport in public travel, while due to the traffic jam and other factors, buses often cannot arrive in time, which always makes it inconvenient and inefficient for people’s travel.
This paper has compared with the common bus stop display systems, and most of them use GPS and GPRS to realize positioning and communication; this kind of systems is practical but highly cost. What’s more, it also produces a continuous communication fee. So this paper provides a new kind of intelligent electronic bus stop board system which is aim to make the bus travel more convenient. This device combines NRF905 the short-distance wireless communication module and YL800IL the long-distance wireless communication module technology. By the combination of wireless module and the control of   micro controller, the system achieves the function of displaying the distance between the stop where passengers are waiting and the bus which is coming to the stop. Because of the cheaper wireless communication module, this system replaces traditional intelligent bus stop board that use the GPS and GPRS, and this intelligent electronic bus stop board system achieves the aims of high reliability, low cost, low power consumption and high efficiency.
Keywords: Electronic stop board   Wireless communication   Bus position   Stop display
目录
摘要    I
Abstract    II
1 绪论    1
1.1选题的意义    1
1.2国内外发展现状    1
1.2.1国外研究情况    1
1.2.2国内研究情况    2
1.3本设计的主要工作    2
2 系统总体设计    4
2.1已有设计方案的比较    4
2.1.1基于GPS定位系统与GPRS通信系统的研究方案    4
2.1.2基于嵌套C/S架构的智能电子站牌研究方案    4
2.2系统方案确定    5
3 系统硬件设计    7
3.1微控制器的选择    7
3.1.1 AT89C52单片机    7
3.1.2 TMS32000系列DSP处理器    8
3.1.3 MSP430F149单片机    8
3.2系统电源硬件设计    9
3.3车载智能设备的硬件设计    10
3.4智能电子站脾的硬件设计    12
3.4.1主控模块    12 微控制器与射频通信的智能公交电子站牌系统设计+电路图+程序:http://www.751com.cn/zidonghua/lunwen_36576.html