摘 要 现在各大中城市出租车行业都已普及自动计价器，所以计价器技术的进展已成定局。而部分小城市尚未普及，但随着城市建设日益加快，象征着城市面貌的出租车行业也将加速进展，计价器的普及也是毫无疑问的，所以未来汽车计价器的市场还是十分有潜力的。本电路以 AT89S52 单片机为中心、附加 A44E 霍尔传感器测距，实现对出租车计价统计，采纳 AT24C01 实现在系统掉电的时候保存单价和系统时间等信息，输出采纳 8 段数码显示管。本电路设计的计价器不但能实现基本的计价，而且还能根据白天、黑夜、中途等待来调节单价，同时在不计价的时候还能作为时钟为司机同志提供方便。 关键词：AT89S52 单片机 A44E 霍尔传感器 断电保存 8 段数码显示管Abstract Now the largest city in the taxi industry are already popular automatic the meter, So the meter of technology has already become settled situation. some small city has not been universal, but as the urban construction is the symbol of the city of the taxi industry will also accelerate the development and popularization of the meter is no doubt, so the next car the meter of the market is very promising.At89s52 monolithic integrated circuits to the circuit is the center, additional a44e hall sensor, the range of statistics, the invoicing at24c01 implement the system is the time saved unit price and system for information, the output of a digital display is 8. the circuit design the meter would not only basic, but can also based on the day and night, the waiting to regulate unit price, not out of time for the convenience of the clock for his comrades.Keywords ： 89s52 monolithic integrated circuits a44e hall electricity 8 to keep sensor for the display of目 录摘 要.....................................................................................................................................iAbstract.............................................................................................
