用VB实现多点测温管理软件系统.docVIP

摘 要 本文讨论了单片机与PC机的串口，通过指令和数据的传送来实现控制功能，并利用VB提供的MSComm通信控件非常方便地编写了Windows环境下的串口通信程序，且结合实例给出了具体说明。 上位机监控管理软件采用VB编制，用户可以通过向通讯控制总站发送命令，提取下位机温湿度数据，完成温度检测。 文中给出了通信协议设计，硬件设计和软件设计。协议中有6种通信命令，适用于各种数据交换。硬件方面设计了时钟电路和波特率配置。软件方面完成了中断子程序、数据交换子程序和上位机串行通讯程序的设计、编写和调试。 总体说来，本系统上位机软件功能齐全，系统实用性强，成本低，数据传输率高，容量大，可靠性好。它不仅可以应用于粮库的监控管理，而且也可推广到其他监控领域，因此具有广泛的应用前景。 关键词：Visual Basic 6.0；单片机；温度曲线；串行通信；MSComm控件 Abstract This paper discussed microcontroller and clusters of mouth of PC realize controlling function through order and conveyance of datum, Exploit o~ red by VB MSComm communication controlling part can write Windows bunches of mouthfuls of communication procedure of environment conveniently very much．Combine instance provide concrete to prove． The software for master is programmed with VB, and customers can send commands to the station to obtain the temperature data of granary. The paper designs the serial communication protocol, the hardware and software, There are six commands that can apply all kinds of data exchange in the serial communication protocol，In the hardware，the clock circuit is designed，and the baud rate is configuredIn the software, the programs, such as the interruption subroutine, data exchange subroutine and the host serial communication subroutine, are designed, compiled and debugged． In a word, this system possesses the merit of practicabilityhigh technology, low cost, high speed and long distance in data transmitting and high reliability. It can be used not only in granary management but other monitor management system. It has broad application potentiality and great meaning. Key words: Visual Basic 6.0; microcontroller; temperature curve; serial communication；controlling part 目 录 1 绪论 1 2 系统硬件简介 2 2.1 单片机技术简介 2 2.1.1 单片机技术的发展 2 2.1.2 单片机技术的应用 2 2.2 课题研究的目的和意义 4 2.3 主控单片机的选择 4 2.4 热电阻测量模块 4 2.5 通信部分 5 3 系统上位机软件设计 6 3.1 Visual Basic功能简介和发展 6 3.2 VB基本概念与VB编程环境 8 3.2.1 VB的基本概念 8 3.2.2 VB 6.0 的集成开发环境简介 10 3.2.3 利用VB开发应用程序的一般步骤 12 3.3 设计中VB6.0所采用的控件 13