外文文献原稿和译文--公交车自动报站系统

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1、The bus stops system automatically 1、The bus is automatically stops the background and significance The people of car out for provides convenient service, while the bus stops directly affect the quality of the service. Traditional stops by the crew artificially, and in this way because of its poor a

2、nd working intensity effect is too great, in many big cities have been eliminated. In recent years, with the development of science and technology progress and microcomputer technology in many fields has been widely used. In the acoustic field, with various pronunciation chip microcomputer technolog

3、y, can complete combined speech synthesis technology, makes the car stops controller is realized for citizens becomes possible, and thus provide a more personalized service. In view of the traditional bus stops system deficiency, combined with the use of public transport vehicle characteristics and

4、practical operating environment, the design of a single-chip microcomputer control bus stops system automatically. The bus stops the design of automatic device is mainly to compensate for changing the traditional voice stops device must have driver control can work backward way, pitted, automatic st

5、ation broadcasts six-foot-tall service term for the public and provide more humanized more perfect service. 2. The system design of each component This system is designed hardware circuit design part: use A T89C51 as controller, through ISD4004 pronunciation chip establish speech, forming a variety

6、of information and use the voice messages broadcast speech information and tips amplifier, and using speech, LED digital display for standing count. When the bus arrived at one site, use the keyboard control the system work, through the yukon voice circuits output speech information and tips, stood in several information LED digital tube display. The whole system hardware design including keyboard circuit and reset circuit, display driver circuit, display circuit, memory expansion circuit m