发明名称 Sensor using electro active curved helix and double helix
摘要 Various sensors use an electro-active device (11) electrically connected to a detector circuit. The electro-active device (11) comprises an electro-active structure in the form of a continuous electro-active member (12) curving in a helix around a minor axis (13) which is in itself curved for example in a helix around a major axis (14). On activation by relative displacement of the ends (16) of the device (11), the electro-active structure twists around the minor axis due to the fact that the minor axis (13) is curved. The continuous member (12) has a bender construction of a plurality of layers (21) and (22) including at least one layer of electro-active material so that concomitantly with the twisting the continuous member (12) bends generating an electrical signal detected by the detector circuit. The electro-active device (11) is advantageous as a sensing element in a sensor because it has a large displacement, high sensitivity and low compliance.
申请公布号 US2004237676(A1) 申请公布日期 2004.12.02
申请号 US20040480675 申请日期 2004.07.12
申请人 MCKEVITT GARETH;HOOLEY ANTHONY;PEARCE DAVID HENRY;LENEL URSULA RUTH;SHEPHERD MARK RICHARD 发明人 MCKEVITT GARETH;HOOLEY ANTHONY;PEARCE DAVID HENRY;LENEL URSULA RUTH;SHEPHERD MARK RICHARD
分类号 G01F23/60;B81B3/00;G01B7/00;G01C19/00;G01D5/12;G01D5/14;G01L1/16;G01L9/08;G01P9/00;G01P15/09;H01L41/08;H01L41/09;H01L41/113;H01L41/187;H01L41/193;H01L41/22;H02N2/18;H04R17/02;H04R23/00;(IPC1-7):G01D5/12 主分类号 G01F23/60
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