高速摄影动态位移计算方法研究

Study on High Speed Photography for Dynamic Displacement Calculation Method

以儿童约束系统动态试验中假人头部位移为研究对象,采用不同焦距镜头的地面高速摄像机对整个试验过程进行拍摄,分析了不同滑车位置拍摄的假人头部位移计算结果和比例因子选择的要素,将计算结果与实测结果对比,建立了一套高精度的利用地面高速摄影机拍摄计算假人头部动态位移的方法。

With the pictures of the whole test recorded by high speed camera with different focal lengths of the lens on the ground, the displacement of the dummy head in the child restraint system dynamic test is studied. The calculation results of dummy head displacement at different trolley position and scale factors are analyzed. Via comparing the calculation results with actual measurement results, a high precision method of calculating dummy head displacement with the pictures recorded by high speed camera on the ground is established.