Vehicle Detection System using Optical fiber Array Grating sensors.

摘要

Among the five areas of intelligent transportation system (ITS), the advanced transportation system (ATMS) predicts the occurrence time and point of congestion, prevents congestion and accidents in advance, and detects traffic flows in order to make the most use of the road. This is being applied. However, these various methods have their disadvantages. Loop vehicle detectors are difficult to install in the early stages of construction, and are difficult to maintain in case of disconnection or repositioning of the roof. Microwave vehicle detectors are used in adjacent vehicles and surrounding buildings or structures. There are many malfunctions due to reflected waves from the lights, and it is impossible to detect stationary vehicles or occupancy. In addition, the visual vehicle detector is incapable of generating a certain period of time under the influence of external environment such as fog and sunrise. In order to solve the problems of these various methods, it is not affected by electromagnetic interference, there is no limitation in the installation place, and the high-sensitivity, small size and light weight fiber array lattice structure sensor is used for the number, occupancy, speed, length, It will be the basis for providing accurate traffic information to road users and building an optimal logistics system by collecting data in real time on the detection of stationary vehicles and the average speed for each section / time zone.