基于Matlab的照相法采集数据在溶质运移实验中的应用

摘要

利用高精度数码相机与电脑,将地下水动力学实验过程中的水头值分布情况以照片的形式传人电脑中,再调用Matlab程序将照片进行批量处理并得出实验所需的水头值,最后根据数据进行分析以及绘制相关曲线.基于Matlab的照相法采集数据与传统人工数据记录相比,具有采集迅速、精度较高、数据文件大批量处理等特点,整个过程操作简单,人工干预较少,从而避免了一些不必要的人为误差.在实际教学实验过程中,该方法适用性较广,为培养学生实践能力和创新能力提供了良好的基础.%With the combination of high-precision digital camera and computer, the distributing situation of water head in the experimental process is input as forms of photographs into a computer.Then the Matlab program is used to get the values of required water head by batch process, and the data and plot related curve is analyzed.Compared with traditional hand-record method, Matlab-based photographically record has features of rapid acquisition, high accuracy and large-volume data processing.Especially in practical application, the whole process is simple with less human intervention, so that some unnecessary errors are avoided.During teaching experiment process, this method has a broader applicability, providing a good foundation for improving students' abilities of practice and innovation.