| 摘要 |
PURPOSE:To increase greatly the hysteresis of a pressure sensor, by combining differentially two pressure-sensitive elements which are formed by orienting the conductive fibers into a flat plate shape with different characteristics to each other and offsetting the hysteresises of both pressure-sensitive elements. CONSTITUTION:As shown in the diagram, pressure-sensitive elements 11 and 12 are adhered to the upper and lower faces of an electrode plate 13 by means of a conductive adhesive. At the same time, an electrode plate 15 is adhered to the upper face of the element 11 to be opposite to the plate 13 by means of a conductive adhesive. The elements 11 and 12 laminated to each other with intervension of the plate 13 are stored into a casing 17 along with a pressure plate 16 to be held between a support plate 18 at the bottom of the casing 17 and the plate 16. The hysteresises of the elements 11 and 12 are offsett to each other by combining differentially these pressure-sensitive elements having different characteristics. Thus the hysteresis is greatly improved for a pressure sensor. |
