大学毕设论文__基于单片机对进出海关口人数统计的系统设计.doc

基于单片机对进出海关口人数统计的系统设计 摘 要 随着中国科技的进步和不断发展，工业机械化程度越来越高，又加入WTO后，中国的贸易交往能力达到了一个高峰期，从海关出入的人当然就更多，有不同国家的人，随着2001年9月11日恐怖分子劫持的民航客机撞击美国纽约世界贸易中心和华盛顿五角大楼的历史事件 关键词：单片机； 数字显示；计数器 Based on single-chip out of the mouth of Customs statistics on the number of system design Abstract Author:Cheng Xiong Tutor:Wen Hong-chang With Chinas scientific and technological progress and the continuous development of industry is becoming more mechanized, but also join the WTO, Chinas trade exchanges between the ability to reach a peak, from the customs of course even more accessible, there are people from different countries, With the September 11, 2001 terrorists hijacke dairliners hit the World Trade Center in New York and the Pentagon in Washington, the emergence of historical events, all countries are aware of the importance of strengthening the customs forces and practical! If we can develop a new type of hair demographics device, then many problems can be avoided, such as: Customs officers are widely spaced and can enhance the security of The graduation project, introduced the customs port based on single chip right out of statistics on the number of system design principles and processes, detailed account of its structural characteristics and uses. In short, this product can achieve a wider range of use, but also replace the manual to statistics, I am also looking forward to see the market as early as possible, this time designed this integrated, intelligentautomation, efficient integration into the Microcontroller-based statistics on the number of people entering and leaving the customs exit system design products. Key word: Monolithic integrated circuit; Digital demonstration; Counter 目 录 1、绪论 1 2、概述 2 3、硬件环境的设计 4 3.1 主要元件的简介及选用 4 3.1.1 单片机的简介及选用 4 3.1.2 数码显示管的简介及选用 7 3.1.3 温度传感器的简介及选用 9 3.2 电路的总体设计与分析 12 3.2.1 时钟振荡电路 12 3.2.2 复位电路 13 3.2.3 LED显示电路 13 3.2.4 开关电路 13 3.3 按键结构与特点及选用 14 4、软件环境的设计 16 4.1 编程软件的选择及其简介 16 4.2 仿真软件的选择及其简介 17 4.3 程序设计 18 4.3.1 设计分析 18 4.3.2 实现功能分析 18 4.3.3 流程图