外压直压法摄像机气密性检测系统的设计

The design of camera air-leakage detecting systems based on external direct pressure

针对传统的直压和差压气密性检测方法难以实现对全密封器件的泄漏检测,提出了一种外压直压法摄像机气密性检测方案.在介绍外压直压法检测原理及相关气密性公式的基础上,设计了一种针对摄像机密封性能的检测系统,并搭建了实验样机.摄像机气密性实验测试结果表明,该系统可以快速、准确且稳定地检测出摄像机的大漏、小漏及合格等指标;系统检测周期少于40s,为全密封器件的气密性检测提供了解决思路.

Aimed at the problem that it is difficult to detect the air-leakage of the whole sealing element for the traditional direct and differential pressure methods,an air-leakage detecting scheme of camera based on external direct pressure was put forward.A camera air-leakage detecting system was designed and an experimental prototype was built on the basis of introducing the external direct pressure measuring principle and the relative air-leakage formulas.The experimental results showed that the index of serious,slight or qualified leakage could be detected quickly,accurately and steadily.The testing period of the system was less than 40 seconds.It provides a solution for the air-leakage detection of the whole sealing device.