串口在云台控制中的应用

文档编号:ZD834    文档字数:9977,页数:28

摘 要

 随着计算机系统的应用和微机网络的发展，通信功能越来越显的重要。这里所说的通信是只计算机与外界的信息交换。因此，通信既包括计算机与外部设备之间，也包括计算机和计算机之间的信息交换。由于串行通信是在一根传输线上一位一位的传送信息，所用的传输线少，并且可以借助现成的电话网进行信息传送，因此，特别适合于远距离传输。对于那些与计算机相距不远的人－机交换设备和串行存储的外部设备如终端、打印机、逻辑分析仪、磁盘等，采用串行方式交换数据也很普遍。在实时控制和管理方面，采用多台微机处理机组成分级分布控制系统中，各CPU之间的通信一般都是串行方式。所以串行接口是微机应用系统常用的接口。所谓“串行通信”是指外设和计算机间使用一根数据信号线(另外需要地线,可能还需要控制线),数据在一根数据信号线上一位一位地进行传输，每一位数据都占据一个固定的时间长度这种通信方式使用的数据线少，在远距离通信中可以节约通信成本，当然，其传输速度比并行传输慢。

关键词：RS-232 ，串口通信 ，云台控制

Abstract
 Along with the computer system application and the microcomputer network development, the unimportance which the correspondence function more and more reveals. Here said the correspondence is a computer and the outside exchange of information. Therefore, the correspondence already includes the computer with the external instrumentation between, also includes between the computer and the computer exchange of information. Because the serial communication is in a transmission line a pass-along message Pam, uses the transmission line are few, and may draw support from the ready-made telephone network to carry on the information transmission, therefore, suits specially in the long-distance transmission. Is distanced not the far person - machine commutation equipment regarding these with the computer and the serial storage external instrumentation like terminal, the printer, the logical analyzer, the floppy disk and so on, uses the serial mode exchange data very to be also common. In the real-time control and the management aspect, use in the multi- Taiwan microcomputer processor composition graduation distributed control system, between CPU correspondence all is the serial mode generally. Therefore the serial interface is the microcomputer application system commonly used connection. Serial communication is refers supposes uses a radical with the computer between according to the holding wire(Moreover need grounding, Possibly also needs the pilot wire). The data place carries on the transmission in a radical according to the holding wire on, each figure according to all occupies a fixed time length this kind of mailing address use the data line few, may save the correspondence cost in the remote communication, certainly, its transmission speed is slower than the parallel transmission.

Keyword: RS-232 ，serial communication ，tripod head control
 

目 录
摘 要 Ⅰ
Abstract Ⅱ
1  绪 论 1
1.1本课题的背景及意义 1
1.2国内外发展的现状与趋势 1
1.2.1视频监控技术的发展 1
1.2.2云镜控制系统的发展 2
1.3本文档研究内容 3
2  总体设计方案 4
2.1 基于RS-232串口研究总体方案 4
2.2 系统总体软件流程 4
3  串口应用设计 6
3.1 RS-232C部分 6
3.2  HZ-01ET解码器 9
3.2.1 设备概述 9
3.2.2 系统设置 9
3.3 云台功能描述 11
4  系统软件部分 12
4.1 通信协议——PELCO-P协议 12
4.2 控件属性 13
4.3 程序创建 16
4.4 控件编程 19
4.5 类模块的分析与实现 23
4.6 调试结果 24
总 结 26
致 谢 27
参考文献 28

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