一种新型公交车自动报站系统设计.doc

摘 要 随着国民经济的高速发展，城市公交事业发展的很快，公交车报站器在公交事业中占有举足轻重的地位，它直接影响着公交车的服务质量。本文应用单片机技术、语音合成技术和点阵LED汉字显示技术设计了一种公交车语音报站和汉字显示系统，它能很好的模仿人完成报站任务，从而解决了这一问题。 本文介绍了一种新型的公交车自动报站系统的设计原理，系统以AT89S51单片机为核心，外扩ISD1420语音芯片，点阵LED汉字显示屏和行列驱动芯片，以及时钟芯片DS1302。当汽车到达某站时通过键盘来控制本系统进行工作，通过语音输出电路进行语音报站和提示，AT89S51单片机同时通过程序读取汉字信息送入LED点阵显示电路进行汉字提示,并且在设计中选用了DS1302时钟芯片，达到了在车辆运行期间可通过LED显示屏显示实时的时间，提高了车辆的服务质量。 关键词：单片机；语音报站；点阵LED汉字显示屏；ISD1420语音芯片 Abstract With the rapid development of national economy, the urban public transportation business is developing very fast. The station reporter on bus is playing a decisive role in the public transportation business which directly affects the service quality of the buses. The paper uses singlechip, speech synthesis, and lattice LED Chinese character display techniques to design a voice station reporting and Chinese character display system which can imitate humans to conduct the station report task so that this problem will be solved. This paper introduces the design principle of a new-style bus automatic station reporter system which takes AT89S51 singlechip as its core and adding external ISD1420 speech chip, the lattice LED Chinese character display screen and the procession driver chip as well as the clock chip DS1302..Works by controlling the system through the keyboard,when there is a bus coming.And report and remind stations through the voice output circuit. In the mean time, the AT89S51 singlechip reads Chinese character information into LED lattice display circuit to conduct the character reminders and it achieves that the real-time is shown through LED display screen during the buses operation by choosing the DS1302 clock chip so that this improves the service quality of the buses. Keywords: Single-chip Microcomputer;Speech station report; Lattice LED Chinese character display screen; ISD1420 speech chip. 目录 第1章 绪 论 1 1.1 课题的研究背景和发展现状 1 1.1.1 研究背景 1 1.1.2 课题的发展现状 2 1.2 公交车语音报站和汉字显示系统的任务和意义 2 1.2.1 设计的主要目标任务 2 1.2.2 公交车语音报站和汉字显示系统的意义 3 第2章 系统的总体方案设计