| 摘要 |
A traffic monitoring system comprises at least one sensor station ( 2 ) and an interferometric interrogation system ( 9 ); wherein the at least one sensor station ( 2 ) comprises at least one optical fibre sensor ( 5 ) deployed in a highway ( 1 ); wherein the at least one optical fibre sensor ( 5 ) comprises a former ( 14 ), an optical fibre ( 13 ) wound on the former, a casing ( 15 ) and compliant material ( 16 ) provided between the casing and the former; such that the compliant material reduces the sensitivity of the sensor ( 5 ); and wherein the interferometric interrogation system ( 9 ) is adapted to respond to an optical phase shift produced in the at least one optical fibre sensor due to a force applied by a vehicle passing the at least one sensor station ( 2 ). |
