非接触式超声的航天器可视化指引泄漏定位方法研究

STUDY OF THE VIDEO GUIDABLE LEAK LOCATION METHOD FOR SPACECRAFT BASED ON THE UN-CONTACT ULTRASONIC TESTING

航天器在轨泄漏快速定位方法对确保航天员生命安全和航天任务的成功具有十分重要的意义,是保障航天器安全可靠的重要途径之一。针对空间站大型舱体结构为检测对象,以泄漏声学为理论基础,分析其泄漏超声在空间中的传播情况,探讨可视化非接触式超声漏点定位的方法,通过研制阵列式超声传感器与摄像头相结合的新型复合可视化探头,研究可视化引导算法,对比试验分析,验证了该方法的有效性和快速性。研究结果表明,该方法可有效确定漏点方向及位置,从视觉上直接引导人员向泄漏主方向巡检,节省时间,漏点定位精度为±20 mm。研究结果为空间站大型舱体泄漏快速检测提供了有效的方法,对航天器在轨泄漏定位策略的制定具有十分重要的指导意义。

It is very important to study the fast leak location method for the on-orbit spacecraft and astronaut safety. The space station cabin was the studying object. And the method research was based on aero-acoustic theory to analysis leak ultrasonic resource distribution in the space. And this method was researched by designing new complex sensor of ar-ray ultrasonic sensor and video sensor and studying the video guide leak location arithmetic method. Then,it was validat-ed that this method was speedy and effective by the experiments research. The research conclusions indicate that the video guide leak location method can guide the leak orientation and find the leak position. The result can lead handler to the main leak orientation find the leak to reduce the detection time. And the method location accuracy is ±20 mm. This meth-od is very fit for the space station huge cabin leak detection on orbit to improve efficiency. It is very significative for space-craft leak detection operation on orbit.