ARRAY TYPE WIM SENSOR USING SEMICONDUCTOR PRESSURE SENSOR

摘要

PURPOSE: A WIM(Weigh-In-Motion) sensor of an array semiconductor pressure sensor type is provided to directly sense the pressure delivered through an elastic layer using a semiconductor pressure sensor, thereby improving the accuracy and the linearity of a sensor system. CONSTITUTION: A WIM sensor of an array semiconductor pressure sensor type comprises a plate(10), an elastic layer(12), a holding base(14), and a plurality of pressure sensors(20). The plate is extended in a longitudinal direction and displaced by an external force caused by the weight of a driving vehicle. The elastic layer elastically holds up the plate in the lower part of the plate. The holding base holds the elastic layer by receiving the same. The pressure sensor is joined to the holding base, arranged in an array, and senses the pressure delivered by the elastic layer.