基于ZigBee技术的智能交通PDA设计

发布时间：2018-04-28 07:34

本文选题：智能交通系统 + PDA　；参考：《内蒙古大学》2012年硕士论文

【摘要】：智能交通系统(ITS)是我国未来交通运输系统发展的主要趋势。近年来,越来越多的高科技设备在ITS中得到了应用,在对安装在路口,甚至高速公路上的设备进行众多参数的设置时,PDA的使用显得尤为重要。ZigBee无线通信技术以低功耗、低成本、可靠性高为特点,可应用于较恶劣的环境中。本文设计了一种运用ZigBee无线技术进行通信的PDA,用于与交通信号机建立无线通信网络,完成参数配置,并且针对通信的可靠性,提出了一种无阻塞通信和校验方法,解决了恶劣工况下智能交通参数设置难的问题。本文选用低功耗、高性价比的AVR系列单片机ATmega128-161作为PDA的核心处理器,与各硬件芯片间通过I2C总线进行通信,并且对电源管理、人机界面进行了合理的设计,提高了系统的可用性。在设计PDA的通讯模块时,利用核心处理器的双串口建立了两种数据传输方式：一、所设计的PDA与交通信号机可通过RS232串口进行连接；二、采用SZ05-STD无线通信模块作为ZigBee无线收发装置,通过ZigBee网络进行连接,重点介绍了ZigBee无线通信网络的建立和使用,这一创新使得该PDA在ITS领域的应用更加广泛。另外,为了保证通信中数据的准确性和完整性,本文还提出了一种使用CRC循环冗余校验法的无阻塞通信方法。最后将程序烧录到PDA硬件平台后对其进行系统调试,可实现预定功能。
[Abstract]:Intelligent Transportation system (its) is the main trend of the future development of transportation system in China. In recent years, more and more high-tech devices have been applied in ITS. The use of PDAs is especially important in setting up many parameters of devices installed at intersections and even on highways. ZigBee wireless communication technology has low power consumption and low cost. High reliability can be used in bad environment. In this paper, a ZigBee wireless communication system is designed, which is used to set up the wireless communication network with the traffic signal machine, to complete the parameter configuration, and to propose a non-blocking communication and calibration method for the reliability of the communication. The problem of setting intelligent traffic parameters under bad working conditions is solved. In this paper, AVR series ATmega128-161 with low power consumption and high performance to price ratio is chosen as the core processor of PDA, which communicates with each hardware chip via I2C bus, and the power management and man-machine interface are designed reasonably. The availability of the system is improved. In designing the communication module of PDA, two kinds of data transmission modes are established by using the dual serial port of the core processor: first, the designed PDA and the traffic signal machine can be connected through the RS232 serial port; second, SZ05-STD wireless communication module is used as ZigBee wireless transceiver and connected through ZigBee network. The establishment and use of ZigBee wireless communication network are introduced emphatically. This innovation makes the PDA more widely used in the field of ITS. In addition, in order to ensure the accuracy and integrity of data in communication, this paper also proposes a non-blocking communication method using CRC cyclic redundancy check method. Finally, the program is burned to the PDA hardware platform to debug the system, which can achieve the scheduled function.
【学位授予单位】：内蒙古大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP368.1;TP399-C6

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