Detection device for data relating to the passage of vehicles on a road
AssigneeU.S. Philips Corporation
InventorsGilles Bailleul, Francois Paris
Life of this patent
Estimating the term…
Abstract
A detection device for data relating to the passage of vehicles over a road. The detection device is to be placed in a groove provided in the upper portion of the road and comprises a first profiled strip provided with an upper cavity in a U-shape, and a piezoelectric cable of the coaxial type arranged in the bottom of the cavity of the first profiled strip. A second profiled strip is arranged in the cavity of the first profiled strip on top of the coaxial cable. The second strip has a shape and dimensions such that it fills up the remaining volume of the cavity above the cable and seals this cavity.
Claims15
A detection device for arrangement in a groove provided in an upper portion of a road to produce data relating to the passage of a vehicle, said detection device comprising:
- a. an elongated substantially-rigid first body comprising an inorganic material and having a longitudinally-extending cavity with a predefined cross-sectional shape having predetermined dimensions;
- b. a coaxial piezoelectric cable disposed at a predetermined position in the cavity;
- and
- c. a preformed, elongated, substantially-rigid second body comprising an inorganic material and slidably fitted into the cavity, said second body being shaped and dimensioned such that it fills the cavity above the cable.
A detection device for arrangement in a groove provided in an upper portion of a road to produce data relating to the passage of a vehicle, said detection device comprising:
- a. an elongated substantially-rigid first body having a longitudinally-extending cavity with a predefined cross-sectional shape having predetermined dimensions;
- b. a coaxial piezoelectric cable disposed at a predetermined position in the cavity;
- and
- c. a preformed, elongated, substantially-rigid second body slidably fitted into the cavity, said second body being shaped and dimensioned such that it fills the cavity above the cable, wherein said first and second bodies are made of a glass fiber material impregnated with a polymerized resin.
Dependencies are inferred from the claim text.