【摘要】 激光诱导荧光法是近年来测试油膜厚度的新方法，本文分析了采用此法将光路暴露于空气中的油厚测试系统的不足之处，研制出光纤替代的油膜厚度探测系统。通过上述两种测试系统的对比试验，得出本文研制的新型光纤式油厚探测系统具有易于拆装、移动方便、信噪比高、测试稳定等特点，弥补了现有方法的不足更多还原

【Abstract】 Laser induced fluorescence technique is one of the effective methods to measure the oil film in recent years.The paper gives the drawbacks of the existed measuring system using laser induced fluorescence technique,laser rays exposed in the air,and presents an improved system by using fiber optic.The comparison test shows that signal to noise ratio was increased using new diagnostics system,which is also characterized by its easy installation,portable and compact structure,and good stability.更多还原