基于Android系统的车载商业信息发布平台的研究与开发

发布时间：2018-12-15 20:05

【摘要】：智能公交系统作为现代城市基础建设的一环,随着科技的进步,其发展突飞猛进,公交车载电子产品也随之趋于多样化。商业信息发布平台作为近年来发展迅速的车载产品之一越来越大众化,市场上普遍存在的公交车载商业信息发布平台大多可实现视频广告播放,但此类产品功能较为单一,内容更新迟滞,在实用性上不够完善。为解决此问题,本课题研究了一款与语音报站装置联动的公交车载商业信息发布平台,其构成主要包括:车载信息终端与后台控制系统。其中,车载信息终端由语音站点播报平台、转换器、终端播放器、Buck-Boost型车载电源稳压模块共同组成,基于Android系统开发出终端播放器软件,通过转换器STM8S207结合RS-485通信实现语音站点播报平台与终端播放器的数据传输,实现了播放广告的同时,能插播报站画面的功能;后台控制系统包括控制服务器、后台管理终端、数据库。控制系统服务器依附于FTP协议为播放器提供数据库支持并与车载终端通过网络传输文件,广告播放所需的多媒体文件以及报站数据均存储于数据库中;管理终端(巴士在线系统)通过HTTP协议向服务器提出监控请求,可通过WEB浏览器监控车辆运行情况。此外,通过算法设计使得后台控制系统能够预估车辆到站时间及优化车辆发车时间。系统在大量测试后已装车300余台,试运行期间稳定性良好。本研究工作使得车载商业信息发布平台兼有播放广告、发布信息、时钟显示,图像显示报站和信息预估等多重功能,弥补了现有单一功能产品的不足。此新型多功能车载信息发布平台具有较好的实用价值和商业价值,发展前景广阔。论文采用总分总结构,首先概述了车载商业信息发布平台功能需求分析及系统架构,并阐述了系统实现的关键技术;其次分别从硬件系统开发与软件系统程序开发两方面来详解车载终端的研究方法,并着重研究了Buck-boost稳压系统、硬件看门狗复位电路、RS-485零延时电路以及基于Android平台的终端播放器;然后研究了后台控制系统实现商业信息发送及车辆监控的方法,构建了基于BP神经网络的车辆到站时间预估模型以及车辆发车时间间隔优化模型;最后通过系统测试展示了车载信息发布平台的最终效果,以实验台测试方式对检测多媒体播放功能、站点插播功能进行检测,以车载测试方式对其检测环境适应性及远程网络传输进行了检测。
[Abstract]:As a link of modern urban infrastructure, intelligent public transport system has developed rapidly with the development of science and technology, and the electronic products of public transportation have become more and more diversified. As one of the rapidly developing vehicle products in recent years, the commercial information publishing platform is becoming more and more popular. Most of the commercial information publishing platforms on the bus can realize the video advertisement broadcast, but the function of this kind of product is relatively single. The content update lags behind, in practicability is not perfect. In order to solve this problem, this paper studies a bus-borne commercial information publishing platform which is connected with the voice station device. Its composition mainly includes: vehicle information terminal and background control system. The vehicle information terminal is composed of voice station broadcast platform, converter, terminal player and Buck-Boost type vehicle power regulator module. The terminal player software is developed based on Android system. The data transmission between the voice station broadcast platform and the terminal player is realized by means of the converter STM8S207 and RS-485 communication, and the function of inserting and broadcasting the picture of the station is realized while the advertisement is played. Background control system includes control server, background management terminal, database. The control system server is attached to the FTP protocol to provide database support for the player and transmit files through the network with the vehicle terminal. The multimedia files needed for advertisement playing and the station data are all stored in the database. The management terminal (bus online system) requests the server through the HTTP protocol, and can monitor the running of the vehicle through the WEB browser. In addition, the backstage control system is designed to estimate the arrival time and optimize the departure time. After a large number of tests, the system has been loaded into more than 300 units, and the stability of the system during trial operation is good. This research makes the on-board commercial information publishing platform has many functions, such as advertising, publishing information, clock display, image display station and information prediction, which makes up for the shortcomings of the existing single function product. This new multi-function vehicle-mounted information publishing platform has good practical and commercial value and has a broad development prospect. In this paper, the general structure is adopted. Firstly, the functional requirement analysis and system architecture of the vehicle business information publishing platform are summarized, and the key technologies of the system implementation are expounded. Secondly, the research methods of vehicle terminal are explained in detail from two aspects of hardware system development and software system program development, and the Buck-boost voltage stabilizing system and hardware watchdog reset circuit are studied emphatically. RS-485 zero delay circuit and terminal player based on Android platform; Then, the paper studies the method of sending commercial information and vehicle monitoring by backstage control system, and constructs the vehicle arrival time prediction model based on BP neural network and the vehicle departure time interval optimization model. Finally, the final effect of the vehicle information publishing platform is demonstrated through the system test, and the testing multimedia play function and the site plugging function are tested by the test platform. The adaptability of the testing environment and the remote network transmission are tested by the vehicle-mounted test method.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TP311.52;TP316

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