| 摘要 |
A preformed narrow inductive sensor is disclosed that can be located in a single saw cut on a road surface to detect passing vehicles. The sensor is constructed from one or more coplanar loops 112 mounted on one or more formers 110 where the former has a solid internal structure. In a further embodiment the former may be flexible or have a semi sold structure. In a flexible form the sensor can retain the installation shape and change shape over time to match changes in the installation surface. The loops may be inclined on the former and overlap where there are more than two. Further members may be provided to link several formers throughout the length of the sensor assembly. The former may have channels 611 along the length of the former 110 in which the loop is mounted. |
