为实现单点流速仪空间坐标定位,开发了自动跟踪坐标位移系统,包括单元机、步进电机、驱动器、坐标架和数据管理系统.系统分为手动和计算机控制两种工作方式,计算机控制时,直接输入水平和垂直方向的相对位移量,实现单点定位；也可对空间坐标进行网格剖分,再依次自动运行至相应坐标点,实现多点跟踪定位,定位精度0.01 mm.基于Access数据库对流速和相应的坐标数据进行管理,并图形化显示流速矢量,直观地反映出水流结构.系统整合了单点流速仪的坐标定位、数据测量、数据分析和图形化显示,使实验过程更加系统化和信息化,提高了单点流速仪的测量精度和实验效率.%An auto traverse system was developed in this paper, which realized the space coordinate positioning of one -point velocimetry, including the unit, step motor, driver, coordinate frame and data management system. The system can be operated both manually and by a computer, When operated by the computer, the horizontal and vertical relative displacement can be input directly to achieve one-point positioning. Besides, the space can be meshed, and corresponding coordinate can be traversed automatically to realize multi-point positioning, with a precision of 0.01mm. The velocity and the corresponding coordinate data are managed based on the Access database, and the velocity vector is graphically displayed, which can reflect the flow structure intuitively. The system integrated coordinate positioning, data measurement, data analysis and graphical display, which systematized and informationized the experiment process,which improved measurement precision and experiment efficiency.
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