| 摘要 |
A pressure sensor which comprises two elongated thin and plate-like elements which are spaced from one another at given locations along their lengths by means of a spacer member, and which sensor is configured so that an electric contact is established when the two elements are brought into contact with one another. The spacer member has the form of a thin plate from which sections of material have been removed so as to form a plurality of cavities or apertures between the elements, these cavities being disposed in successive, sequential relationship along the length of the sensor. The invention is characterized in that all cavities (4-8) are connected to atmosphere through air passages (9-11) which extend in the spacer member (3), and in that at least a first (1) of the plate-like elements intended to be subjected to a pressure force from a person or an object is made of a metallic springy material, and in that both of the elements (1, 2) are electrically conductive so as to close a current path between two electric conductors (15, 16) extending to a respective element (1, 2) irrespective of the cavity (4-8), in which the elements (1, 2) are brought into contact with one another when the pressure sensor is subjected to a force from an object or a person. |
