作者：董圣友1, 肖继学1, 廖旋2, 程志3, 李海军1, 曾强1
作者单位：1. 西华大学机械工程与自动化学院, 四川 成都 610039;
2. 四川省工业设备安装公司, 四川 成都 610031;
3. 成都航天通信设备有限责任公司, 四川 成都 610051
关键词：串行通信;ActiveX控件;API函数;实时性
摘要：
为合理、高效地应用Visual Studio中的串口通信方法,利用Win32 API 函数QueryPerformanceCounter 和QueryPerformanceFrequency设计出能比较精确测试、分析基于Visual Basic中的ActiveX控件、Visual C++中的ActiveX控件和Win32 API函数的3种Visual Studio平台上串行通信方法的实时性能测试系统。该系统的硬件由4台配置基本相同的PC和连接它们的RS-232C接口线构成,软件包括串行数据发送模块、基于以上方法的串行数据接收模块及相关分析模块。实验结果表明:API方法的通信响应速度比VC控件法、VB控件法分别快约175%、220%,数据接收速度分别快约8倍、9倍。
Real-time performance test of the serial communication methods in Visual Studio integrated development environment
DONG Shengyou1, XIAO Jixue1, LIAO Xuan2, CHENG Zhi3, LI Haijun1, ZENG Qiang1
1. School of Mechanical Engineering and Automation, Xihua University, Chengdu 610039, China;
2. Sichuan Provincial Industrial Equipment Installation Co.,Chengdu 610031, China;
3. Chengdu Aerospace Communication Device Company Limited, Chengdu 610051, China
Abstract: ActiveX communication and API communication in Visual C++ environment and ActiveX communication in Visual Basic environment are the three serial communication methods in Visual Studio integrated development environment. In order to use the approaches in application appropriately and efficiently, such Win32 API functions as QueryPerformanceCounter and QueryPerformanceFrequency were utilized to design an experiment system that can be used to test and analyze the real-time performance of the three serial communication methods. The system was made up with 4 PC, which configures were same, and the RS-232C interfaces for the 4 PC to communicate in hardware. The system software included sending-data module, receiving-data module based on the three serial communication methods and relatively analyzing-data module. Results of experiment show that the communication of the API method responds faster than that of the ActiveX methods in Visual C++ and Visual Basic environments about 175%, 220%, respectively, and the API method receives data faster than them about 8 times, 9 times, respectively.
Keywords: serial communications;ActiceX control;API function;real-time performance
2015, 41(2): 124-128 收稿日期: 2014-3-28;收到修改稿日期: 2014-5-15
基金项目: 教育部重点项目(Z2012015);四川省教育厅重点项目(13ZA0025);四川省人力资源和社会保障厅重点项目([2013]203)
作者简介: 董圣友(1987-),男,河南商丘市人,硕士研究生,专业方向为单片机与嵌入式系统应用。
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