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公开(公告)号：US5744794A
公开(公告)日：1998-04-28
申请号：US495566
申请日：1995-12-13
申请人： Walter Craig Michie , Neil Bette Graham , Brian Culshaw , Peter Thomas Gardiner , Christopher Raymond Moran
发明人： Walter Craig Michie , Neil Bette Graham , Brian Culshaw , Peter Thomas Gardiner , Christopher Raymond Moran
CPC分类号： G01M3/047
摘要： A system for detecting the presence of a target measurand, such as water or specified chemicals which are carried in an aqueous solution, and which includes a fibre-optic probe assembly which incorporates an optical fibre, a thin film of a water swellable hydrogel, and a rigid containment structure. The hydrogel is in contact with the optical fibre such that a volumetric change in the hydrogel causes a microbend of the optical fiber. The microbend is detected by a sensor assembly which is coupled to the probe assembly.
摘要翻译： PCT No.PCT / GB94 / 00292 Sec。 371 1995年12月13日第 102（e）日期1995年12月13日PCT 1994年2月14日PCT PCT。 公开号WO94 / 18536 日期1994年8月18日用于检测在水溶液中携带的目标被测量例如水或特定化学品的存在的系统，其包括包含光纤的光纤探针组件， 水溶胀水凝胶和刚性容纳结构。 水凝胶与光纤接触，使得水凝胶的体积变化导致光纤的微弯曲。 微弯由耦合到探针组件的传感器组件检测。
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公开(公告)号：US06222952B1
公开(公告)日：2001-04-24
申请号：US09355399
申请日：1999-09-29
IPC分类号： G02B626
CPC分类号： G01D5/35377
摘要： A measurand is detected by a sensor element forming part of a transducer unit which is filled to an optical fiber or fiber capable such that the fiber is bent or curved to an abnormal level which introduces a measurable loss in the transmission characteristics of the fiber. The transducer unit has three spaced clamp members arranged to be clamped along the length of the fiber. The sensor element is fitted between clamp members and the fiber is guided over a bar located between clamp members.
摘要翻译： 通过形成传感器单元的一部分的传感器元件来检测被测量，所述传感器元件被填充到能够使光纤弯曲或弯曲到异常水平的光纤或光纤，从而在光纤的传输特性中引入可测量的损耗。 传感器单元具有三个间隔开的夹紧构件，其布置成沿着纤维的长度被夹紧。 传感器元件安装在夹紧构件之间，纤维被引导到位于夹紧构件之间的杆上。
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公开(公告)号：US06586723B2
公开(公告)日：2003-07-01
申请号：US09878844
申请日：2001-06-11
IPC分类号： G01J104
摘要： A detection system for use in detecting the presence of a non-aqueous organic measurand is provided. The system comprises a fiber-optic probe assembly incorporating an optical fiber which is susceptible to micro bending anywhere along its length, and a body of material contained within a rigid containment structure, wherein said body comprises a material selected from the group consisting of a rubber, plastic and semi-crystalline/rubbery polymeric material which is subject to a volumetric change capable of inducing a microbend in said optical fiber in the presence of said non-aqueous organic measurand and wherein the body of material is a substantially continuous coating which has a thickness prior to contact with the non-aqueous measurand of less than 7.5 mm and a sensor assembly coupled to the probe assembly, the sensor assembly having optical signal transmitting and receiving means arranged to identify optical fiber microbend changes arising, in use, from forces imposed locally on the fiber by the interaction of the rigid containment structure and volumetric changes in the body of material.
摘要翻译： 提供了用于检测非水有机被测量的存在的检测系统。 该系统包括光纤探针组件，该光纤探针组件包含易于在其长度上任何地方微弯曲的光纤，以及容纳在刚性容纳结构内的材料体，其中所述主体包括选自橡胶 ，塑料和半结晶/橡胶状聚合物材料，其经受体积变化，能够在所述非水有机被测量的存在下在所述光纤中诱导微弯曲，并且其中所述材料体是基本上连续的涂层，其具有 在与非水被测量接触小于7.5mm之前的厚度以及耦合到探针组件的传感器组件，所述传感器组件具有光学信号传输和接收装置，其被设置为识别在使用中产生的光纤微弯变化 通过刚性容纳结构和体内体积变化的相互作用在纤维上局部存在 材料。
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公开(公告)号：US07241845B2
公开(公告)日：2007-07-10
申请号：US10805494
申请日：2004-03-22
IPC分类号： C08G65/32
CPC分类号： C08G81/024 , A61K47/34 , C08G18/4808 , C08G18/6685 , C08G65/33348 , C08G81/00 , C08G2210/00
摘要： A linear random block copolymer comprising segments of polyethylene oxide and a relatively more hydrophobic polymer, e.g. polypropylene oxide connected by hydrophobic segments containing urethane and urea groups formed from the reaction of a di-isocyanate and a diamine, wherein the diamine comprises less than 2% by weight of the total weight of the reactants used in the preparation of the copolymer.
摘要翻译： 线性无规嵌段共聚物，其包含聚环氧乙烷和相对较疏水的聚合物的链段， 通过含有由二异氰酸酯和二胺反应形成的氨基甲酸酯和脲基的疏水部分连接的聚环氧丙烷，其中二胺占共聚物制备中使用的反应物总重量的小于2重量％。
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