Patent ID: 7694579
Filing Date: 2010-04-13
Classification: G08G

Abstract:
1. A sensor adapted to be embedded in and buried under a layer of cement material of a pavement to detect pressure thrusts acting on said pavement, the sensor comprising: a plate-like transducer operable to convert mechanical stress into electrical signals; a base structure including a container fitted with a chamber such as to house said transducer and a layer of protective material defined between a surface in contact with said transducer and an opposite free surface; and a pressure plate including a force receiving portion and a force transferring portion which projects compared to said force receiving portion, the force transferring portion including one end portion facing the force receiving portion and one opposite end portion immersed in said layer of protective material to transmit pressure thrusts received from said force receiving portion to said transducer, wherein the force receiving portion is spaced a distance from said free surface so as to define between said force receiving portion and said free surface a region which can be filled at least in part with the cement material of said layer when said sensor is embedded in and buried under said layer of cement material, said force receiving portion having at least one through opening communicating with said region.