多线程编程下振动物体的双目动态测量实现

Implementation of binocular dynamic measurement for vibrating object under the multithreaded programming

馈源舱索系统位移和振动频率的实时动态检测是实现闭环控制的基础。为保证对采集到的数据及时进行计算并实时输出控制量,打破传统接触式测量的局限,利用非接触式的基于多线程编程技术的双目视觉高速动态测量方法,从数据的前端采集、中期处理到后端分析,研究了多线程同步测量技术的软件实现。通过振动台实验验证了系统测量的可行性,并将系统用于室内馈源舱索模型的振动试验中,取得了理想的效果。对于低频振动测量需求而言,双目动态测量是一种比较好的解决方案。

It is the foundation of realizing closed loop control that the real-time dynamic detection of displacement and vibration frequency of the feed cabin-cable system. To ensure the collected data can be calculated in time and exported real-time,and break the limitations of traditional contact measurement,a method of non-contact binocular vision high-speed dynamic measurement based on multithreaded programming technology was put forward. From front-end data acquisition via middle processing to the backend analysis,the software realization technology of multithreaded synchronization measurement was introduced. The feasibility of the system measurement is validated by shaking table test,and the system is applied to the vibration test of indoor feed cabin cable model,and the ideal result is obtained. For low frequency vibration measurement,binocular dynamic measurement is a good solution.