Differential laser trigonometry for measuring the oil film thickness on water |
| |
| Authors: | Qieni Lü Lin Lu Baozhen Ge Di Wu Hao Wu |
| |
| Affiliation: | 1. College of Precision Instruments &2. Optoelectronics Engineering, Tianjin University, Key Laboratory of Opto-Electronics Information Technology, Ministry of Education , Tianjin 300072 , China qienil@tju.edu.cn;4. Optoelectronics Engineering, Tianjin University, Key Laboratory of Opto-Electronics Information Technology, Ministry of Education , Tianjin 300072 , China |
| |
| Abstract: | A differential laser trigonometry method is presented for measurement of the oil film thickness on a water surface. The thickness of an oil film can be obtained with two off-plane displacements to a benchmark plane obtained by the imaging spot displacement and the configuration parameter of the imaging system subtracted. The method has been tested in the laboratory via the examination of diesel oil and petroleum films. An experimental system setup has been developed, by which the maximum measurable thickness is 12?mm and the average measurement error is 6.05?µm. The results show that the method presented is feasible, and applicable to dynamic online measurement of oil film thickness of oil spills on the sea surface. |
| |
| Keywords: | differential laser trigonometry oil slick water surface thickness measurement |
|
|
