VEHICLE-PASSING INFORMATION DETECTING APPARATUS WITH USING OPTICAL FIBER SENSOR

摘要

The device using optical fiber, detects and checks various data on the number of passing cars, running speed, type and weight of a car without interrupting noise rapidly and correctly. The device comprises a detecting section (2) for sensing parameters of vehicle by compressing of steel plate (26) buried under road; light source section (4) for projecting optical power controlled by APC circuit (12) to the section (2); light detecting section (6) for receiving modulated signal transmitted from optical fiber (24) for changing wheel weight to electric signal via upper face of the plate (26).