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    • 71. 发明授权
    • ROAD TRAFFIC MONITORING SYSTEM
    • 道路交通监控系统
    • EP1360671B1
    • 2004-07-21
    • EP02711046.9
    • 2002-02-11
    • Qinetiq Limited
    • HILL, David John, Qinetiq WinfrithNASH, Philip John, Qinetiq Winfrith
    • G08G1/02E01F11/00
    • G08G1/02G08G1/04
    • 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 a 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).
    • 交通监控系统包括至少一个传感器站(2)和干涉询问系统(9); 其中所述至少一个传感器站(2)包括布置在高速公路(1)中的至少一个光纤传感器(5); 其中所述至少一个光纤传感器(5)包括成形器(14),缠绕在所述成形器上的光纤(13),壳体(15)和设置在所述壳体与所述成形器之间的柔性材料(16) 使得柔性材料降低传感器(5)的灵敏度; 并且其中所述干涉式询问系统(9)适于响应于由经过所述至少一个传感器站(2)的车辆施加的力而在所述至少一个光纤传感器中产生的光学相移。
    • 72. 发明公开
    • TRAFFIC MONITORING
    • 交通监控
    • EP1360673A1
    • 2003-11-12
    • EP02711074.1
    • 2002-02-12
    • Qinetiq Limited
    • HILL, David John,Qinetiq LTDTHOMAS, Sean Dormer,Qinetiq LTDWILSON, RogerQinetiQ LTD
    • G08G1/02E01F11/00
    • G08G1/01E01F11/00G08G1/02
    • The present invention provides an optical fibre sensor for traffic monitoring, which comprises a former consisting of an elongate plate, and an optical fibre wound onto at least one surface of the elongate plate. The elongate plate is flexible in a direction transverse to the at least one surface such that passage of traffic over the optical fibre sensor is arranged to cause a variation in at least one predetermined property of an optical signal transmitted through the optical fibre sensor. The resulting sensor has a reduced depth which makes it easier to locate within the surface of a traffic route, has increased flexibility to enable it to confirm to the surface of the traffic route, and has good cross axis sensitivity rejection.
    • 本发明提供了一种用于交通监控的光纤传感器,它包括由细长板组成的成形器和缠绕在细长板的至少一个表面上的光纤。 细长板在横向于至少一个表面的方向上是柔性的,使得业务在光纤传感器上的通过被布置为引起通过光纤传感器传输的光信号的至少一个预定属性的变化。 由此产生的传感器的深度减小,使其更容易定位在交通路线的表面内,增加了灵活性以使其能够确认交通路线的表面,并且具有良好的横轴灵敏度抑制。