毕业设计

近年来随着计算机在社会领域的渗透, 单片机的应用正在不断地走向深入，同时带动传统控制检测日新月益更新。在实时检测和自动控制的单片机应用系统中，单片机往往是作为一个核心部件来使用，仅单片机方面知识是不够的，还应根据具体硬件结构，以及针对具体应用对象特点的软件结合，以作完善。

模拟多通道压力系统是利用压力传感器采集当前压力并反映在显示器上，它可以分析压力过量程，并发出报警。并采用电子秤原理可根据输入单价准确的计算出物体的金额。

    本文首先在绪论介绍了此系统的研究意义及使用的开发环境，伟福仿真系统和开发使用的MCS-51系列的单片机芯片。在第二章论述了总体设计过程,确定了技术指标及器件的选择第三章着重描述了系统硬件电路设计、硬件设计框图及所使用的各种芯片功能与特性,在第四章中重点剖析了软件设计的过程.

最后在第五章中具体论述了液晶驱动、A/D转换、键盘扫描及键值处理及调试。

 

关键词: 伟福仿真机、 单片机技术、A/D转换、液晶驱动.

 

 

 

 

 

 

 

 

 

 

 

Abstract
With the infiltration in the social field of the computer in recent years, the application of the one-chip computer is moving towards deepening constantly, drive tradition is it measure crescent benefit to upgrade day to control at the same time. In measuring in real time and automatically controlled one-chip computer application system, the one-chip computer often uses as a key part, only one-chip computer respect knowledge is not enough, should also follow the structure of the concrete hardware , and direct against and use the software of target's characteristic to combine concretly, in order to do perfectly.

    The pressure system of much passways of simulation utilizes the pressure sensor to gather the pressure at present and reflect by display, it can analyse excessive Cheng of the pressure , sends out and reports to the police. It can be according to inputting the amount of money of calculating out the object with accurate unit price to adopt the principle of the electronic scale.

     This text has introduced the research meaning of this system and development environment used in the introduction at first, artificial system of the big good fortune and developing the one-chip computer chip of MCS-51 series used. Have described the overall design process in chapter two, have confirmed chapter three of choice of technical indicator and device has described emphatically that designs the block diagram and various kinds of chip functions and characteristics used in circuit design of the systematic hardware , hardware, have analyzed the design course of the software especially in chapter four.

Expounded the fact in chapter five finally concretly the liquid crystal is driven, A/D is changed, keyboard scanning and key value is dealt with and debugged.

 

Keyword: Artificial machine of big good fortune , technology of the one-chip computer , A/D change, the liquid crystal is driven.