风速仪设计毕业论文.doc

风速仪设计
    

目   录
1引言 3
2 设计原理 3
3 技术介绍 4
3.1 8031单片机 5
3．2 系统扩展、接口技术 5
3．3 三总线概述 6
3．4 中断技术 7
4 软件设计 8
4.1 测频法与测周法 8
4．2 程序结构 11
5 硬件设计 14
5.1 硬件结构图 14
5.2 地址所存器扩展电路 15
5.3 扩展程序存储器电路 16
5.4扩展8155可编程外围并行接口芯片 18
5.4.1  8155的结构与引脚 18
5.4.2  8155的RAM和I/O口地址 18
5.4.3  8155的寄存器 19
5.4.4  8155芯片的使用 20
5.4.5 8031与8155的连接 20
5.5 显示电路 21
6 结论 21
参考文献 22
致谢 22
附录： 24

摘要：本文介绍了一种基于Inter 8031单片机的风速仪的设计,它利用测旋转体的转速测得风速。本设计中采用8031单片机主要由于其内部资源较为丰富，处理速度较快，因而可以在不扩充计数器的情况下实时的测量脉冲信号并转化为转速数据，进而可以转变成线速度输出。此外，本设计的主要目的虽然为风速测量，但是当对外部传动部件做简单修改以后不仅可以应用在风速的测量当中，也可在转速测量控制，车辆行驶速度测定，流速流量测量等方面发挥作用。
关键字：8031单片机，风速仪，测周法与测频法

ABSTRACT
This article introduced one kind based on the Inter 8,031 monolithic integrated circuits course-and-speed computers design, It uses measured  the rotational speed obtains the wind speed. In this design uses 8,031 monolithic integrated circuits mainly because its internal resources richer, the processing speed is quicker, thus may in does not expand the counter in the situation the real-time survey pulse signal and transforms as the rotational speed data, then may transform the line speed output. In addition, this design main goal although demonstrated for the wind speed, but when will make these impel revision to exterior transmission part later not only to be allowed to apply middle the wind speed survey, also might in the tachometric survey control, aspect and so on vehicles moving velocity determination speed of flow measurement play the role.

Key words:  8031 monolithic integrated circuits; Instrument of wind speed; The method of survey cycle and survey frequency.