基于单片机的产品自动计数器

摘   要
 在当今社会飞速发展的格局下，越来越多的流水线上的产品和各种商业场合的人员需要进行自动计数.基于单片机构成的产品自动计数器有直观和计数精确的优点，目前已在各种行业中普遍使用。数字式电子计数器有多种计数触发方式，它是由实际使用条件和环境决定的。有采用机械方式的接触式触发的，有采用电子传感器这类非接触式触发的。本文所设计的计数器是采用红外对射式方式，抗干扰性好，可靠性高.该产品应用广泛，可用于测量流水线上的产品的数量以及可检查产品有无缺损；也可以用于测量宾馆、饭店、商场、超市、博物馆、展览观、车站、码头、银行等场所的人员数量及人员流通数量，同时丝毫不会侵犯到被测人员的个人隐私.本设计的指导思想是利用红外发光管发射红外线，红外接收管接收此红外线，并将其放大、整流形成高电平信号.当有人或物挡住红外光时，接收管没有接收到红外信号，放大器将输出低电平，同时将这个电平信号送入单片机进行控制计数，并经译码驱动电路使数码管显示数值。这样就得到要统计的人或物的数量。
关键词：自动计数、红外检测、单片机、8位数码管.

 Abstract
 In today's society under the pattern of rapid development, more and more on the lines of products and various business settings need to automatically count. MCU-based products pose a direct and automatic counters have the advantage of accurate count, is already in the Species commonly used in industry. The digital electronic counter trigger a number of counts, it is from the actual conditions of use and environmental decisions. The use of a mechanical contact the trigger, use electronic sensors to trigger the non-contact, infrared sensors is one of them, it is a non-contact electronic sensors. Using infrared sensors produced by electronic counters. This paper is designed to counter the use of infra-red shading, anti-interference and good, high reliability. The product of extensive and can be used to measure the product lines and the number of defects can check whether products; can also be used to measure the hotels, restaurants, shopping malls, supermarkets, museums, exhibition concept, railway stations, docks, banks and other places of the number of staff The number of staff and circulation, while in no way infringe upon the privacy of individuals tested staff. The circuit's guiding ideology is to use infrared LED fired infrared, infrared receiver of receiving the infrared, and enlarge, a rectifier HIGH signal. When Ren Huo wu blocking the infrared light, not receiving the infrared signal to the receiver, amplifier output will be low, at the same time, the MCU-level signals into the control count, and the drive circuit to decode The numerical digital display. This will be the Ren  huo  Wu statistics to the number. Key words: automatic counting, infrared detection, SCM, decoding.

目   录
摘要…………………………………………………......................Ⅰ
Abstract…………………………………………………................. Ⅱ
第一章  绪论…………………………………………………................1
       1.1、前言………………………………………………………........1
      1.2、选题背景…………………………………………………………… 1 [资料来源：www.THINK58.com]
      1.3、设计要求…………………………………………………………  2
      1.4、国内外的研究概况……………………………………………………2
      1.5、研究的主要内容以及存在的问题………………………………… 2
第二章  基于单片机构成的产品自动计数器的设计…………………………...3
    2.1  方案论证与选择……………………………………………………3
    2.2  系统总体框图和原理………………………………………………5

 2.3  系统各单元部分构成…………………………………………………5
 2.3.1  电源供电部分......................................5
 2.3.2  红外线检测部分..................................6
 2.3.3  计数、显示部分....................................9
   2.4  系统程序设计......................................13
        2.4.1程序流程图...................................13
        2.4.2 程序设计....................................14             
 2.5  电路总图..........................................16
       2.5.1  电路总图...................................16
第三章  总结.............................................17 [资料来源：http://think58.com]
参考文献..............................................18
致谢............................................19
附录.................................................20

[资料来源：www.THINK58.com]