摘要我知道出租车行业是从八十、七十年代开始才出现的，它的极速发展是我国的经济快速发展之后才开始的。现在出租车已经是我们日常生活交通过程当中不可或缺的工具之一。这么多年来我国使用的出租车计价器还是只有一种计量功能。现在，整个世界的许多城市都有出租车，所以也就自然而然的催熟了出租车计价器的计价水平。城市建设现代化也决定着出租车的外包装，是不是具有城市特色的。随着出租车的大量产出，计价器的需求也随之增加。我的出租车计价器，它的主要控制模块是由STC89C52来担任主要控制芯片，让单片机的外围电路控制全部系统。计时模块：由2DS1302时钟芯片来控制掉电后再重新上电不需要调整时针的功能。显示模块：LCD1602液晶。存储模块：有24C02芯片来存储掉电后原来的数据。在没有乘客的时候，液晶显示屏上有正常的年月日时间，通过按键模块来设置时间；如果车上有乘客，就可以通过按键来开始工作，结束时按清零键便可。计价器有几种不同的计价方式，路程在起价费范围之内的，也有超过的按时间收费和路程收费，还有白天和晚上不同的收费标准。曾经的出租车还是口头约定收费，现在有准确的计量方法，让我们更放心，收费也更公平公正。所以，一个有好的功能的计价器是非常重要的。所以值得我们去研究。72883

该论文有图15幅，表1个，参考文献10篇。

毕业论文关键词：单片机   计价器    计量方法 

Design of taxi meter

Abstract I know the taxi industry from the eighty and seventys began to emerge, it is the rapid development of China's rapid economic development after the beginning of the。 Now the taxi is one of the indispensable tools in our daily life。 For many years, the use of the taxi meter in our country is only one kind of measurement function。 Now, many cities in the world have taxis, so naturally the ripening of the taximeter valuation level。 The modernization of urban construction also determines the outer packing of the taxi。 With the large number of taxi output, the demand for the meter also increases。 My taxi meter, its main control module is to serve as the main control chip STC89C52, so that the peripheral circuit of the MCU control all systems。 Timing module: by the 2DS1302 clock chip to control the power off after the re power does not need to adjust the clock function。 Display module: LCD1602 lcd。 Storage module: there are 24C02 chips to store the original data after power off。 When none of the passengers, the liquid crystal display a normal date time, through the key module to set the time; if a passenger car, you can through the button to start work, by the end of the reset button will be。 Taximeter to have several different valuation methods, distance in prices within the range of fees, over charging by time and mileage and day and night different charges。 Once a taxi or a verbal agreement, and now there is an accurate measurement method, so that we are more at ease, the charges are more fair and impartial。 So, a good function of the meter is very important。 So it is worth to study。

Key words: single chip   taximeter    measuring method

目  录

摘要-Ⅰ

Abstract--Ⅱ

目录-Ⅲ

1 绪论-1

1。1单片机的发展1

1。2单片机的优势1

2 设计方案- 3

2。1设计说明3

2。2设计细节要求说明3

2。3设计功能说明3

2。4方案的确立4

3 硬件电路设计说明-6

3。1 STC89C52单片机说明- 6

3。2最小基础系统的设置9

3。3关于时钟模块的说明10

3。4 关于按键模块的说明--13