A system for identifying product oil is studied

which is based on inductor model of electron cloud.In order to analyze the testing oil

the echo signal back from the end of optical fiber sensor is processed with Fresnel reflection theory and inductor model of electron cloud theory.Depended on this system

product oil can be identified successfully.The experimental results show that the testing oil such as 90#

93#

97# gasoline and-10# diesel

can be identified exactly

using the product oil identification system

even though the oil mixture also can be distinguished effectively.The system has simple structure

strong anti-interference ability

and shows great application prospect in future.