基于光强反射和压电振动的混合式结冰探测系统

为解决目前飞机结冰探测存在测点单一，测量不准确、探测位置不匹配的问题，基于光强反射方法研制了光纤结冰传感器，基于压电振动方法研制了平膜结冰传感器，将两者进行组合嵌入至NACA0012翼型，研制了一种适合飞机翼面、多点分布测量的混合式结冰探测系统，并在低温冷库、结冰风洞中进行了测试。研究表明:多点分布测量的混合式结冰探测系统不仅能发挥光纤结冰探测和平膜结冰探测各自的优势，还能实现翼表面的结冰探测，响应时间不超过0.5 s，结冰厚度测量范围可从0.2 mm到3 mm，可靠性优于单点测量的结冰探测棒，是具有发展前景的一种新型结冰探测技术。 

Hybrid ice detection system based on light intensity reflection and piezoelectric vibration

There are some problems such as single-point measurement，inaccurate measurement and mismatching positions for current ice detection system of airplane.The optic fiber ice detection sensor was developed by the light intensity reflection method.And the flat film ice detection sensor was manufactured by the piezoelectric vibration method.These two were embedded into a NACA0012 airfoil.Thus a hybrid ice detection system suitable for airfoil surface and multi-point distributed measurement was developed，which was tested in cold storage and icing wind tunnel.It showed that，the hybrid ice detection system of multi-point distribution measurement can not only have the advantages of optic fiber ice detection and flat film ice detection，but also achieve ice detection on airfoil surface.The response time was less than 0.5 s and the measurement range of ice thickness was from 0.2 mm to 3 mm.The reliability of hybrid ice detection system was better than that of ice detection rod of single-point measurement，proving it is a novel and prospective ice detection technology.