根据超声辐射场测量和分析的需要,分为测量模块和分析模块。测量功能模块包含有上位机控制平台和数据实时处理平台。在综合分析平台中根据声场描述的需要,将采集到的电信号,转换成声压或声强值,并且将转换的值投影到对应的采集区域,采用可视化技术直观显示声场分布的变化规律。
进行自动测量***主要的是运动控制模块,数据采集控制模块。运动控制模块和采集模块的功能是与下位机DMC2410四轴运动卡和信号采集单元通讯,通过硬件组件提供的动态连接库DLL,向运动控制卡和数字示波器发送或提取需要的信息,驱动X、Y、Z轴步进电机运动,达到快速准确测量的目的。因此该模块的一端与硬件提供的动态链接库的DLL相连,能够从硬件系统中获得软件系统所需要的信息,如超声接收传感器的位置信息,即机器人X、Y、Z 轴的位置坐标,和采集到的超声波信息,并把信息进行基础的处理后传送给显示输出模块进行显示和输出,其原理框图如下图3-3所示。在进行数据结构和软件框架的设计上,要考虑人机界面友好,硬件控制和纠错功能要完善,还包括数据显示模块,数据可视化模块等。
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