公开(公告)号：JP2005077418A

公开(公告)日：2005-03-24

申请号：JP2004256772

申请日：2004-09-03

Applicant: Abb Res Ltd ,  アーベーベー・リサーチ・リミテッドAbb Research Ltd.

Inventor： BOHNERT KLAUS ,  GABUS PHILIPPE ,  BRAENDLE HUBERT

IPC: G01R15/24 ,  G01R33/032

CPC classification number: G01R15/246 ,  G01R33/032

Abstract: PROBLEM TO BE SOLVED: To provide a sensor for electric or magnetic field without deficiencies of conventional technique. SOLUTION: A sensor head 2 can be bent in the domain of sensor fiber 3. Friction depressant 7 is contained in a capillary tube 6 to reduce frictional force between the sensor fiber 3 and the capillary tube 6. The frictional depressant 7 is oil or dry lubricant. The capillary tube 6 is enveloped with a capillary tube sheath 8. The sensor head 2 makes it possible to measure current in conductor of large cross-section by its easy mounting on conductor, in addition to measurement independent of temperature. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提供用于电场或磁场的传感器，而没有常规技术的缺陷。 解决方案：传感器头2可以在传感器光纤3的区域中弯曲。摩擦抑制剂7容纳在毛细管6中，以减少传感器光纤3和毛细管6之间的摩擦力。摩擦抑制剂7是 油或干润滑剂。 毛细管6被毛细管鞘8包围。除了独立于温度的测量之外，传感器头2可以通过其容易地安装在导体上来测量大截面的导体中的电流。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：AT384968T

公开(公告)日：2008-02-15

申请号：AT00811056

申请日：2000-11-09

Applicant: ABB RESEARCH LTD

Inventor： BOHNERT KLAUS ,  BRAENDLE HUBERT ,  GABUS PHILIPPE

IPC: G02B6/27 ,  C03B37/15 ,  G02B6/10 ,  G02B6/255 ,  G02B6/34

公开(公告)号：DE59910014D1

公开(公告)日：2004-08-26

申请号：DE59910014

申请日：1999-02-12

Applicant: ABB RESEARCH LTD

Inventor： BOHNERT KLAUS ,  BRAENDLE HUBERT ,  BODOR PATRICK

IPC: G01L9/00 ,  G01L11/02

Abstract: The subject-matter of the present invention is a wavelength-coded fiber Bragg grating pressure sensor 1 which is suitable, in particular, for use in the case of high pressures and temperatures in oil drill holes. The sensor principle according to the invention is based on the fact that the hydrostatic pressure of a liquid or gaseous medium 11 is converted with the aid of a transducer 1 into a longitudinal fiber elongation or fiber compression. The transducer 1 comprises a measuring or pressure cylinder 7a which exchanges pressure with the medium 11, and a reference cylinder 7b which is shielded from the medium 11 or oppositely pressure-loaded. Temperature-compensated transducers 1 with a temperature-independent Bragg wavelength lambdB can be realized by introducing a suitable temperature dependence of the mechanical prestressing of the pressure sensor fiber 3 by selecting the materials, lengths and arrangements of the fiber holder supports 5a, 5b. A fiber Bragg grating temperature sensor 19, 20 can be provided, in addition. Also specified are transducers 1 with other cylinder arrangements 7a, 7b, and a wavelength-division multiplex configuration with several transducers 1.

公开(公告)号：DE59905887D1

公开(公告)日：2003-07-10

申请号：DE59905887

申请日：1999-12-16

Applicant: ABB RESEARCH LTD

Inventor： BOHNERT KLAUS ,  BRAENDLE HUBERT

IPC: G01F1/44 ,  G01L1/24 ,  G01L11/02

Abstract: The present invention relates to a fiber laser pressure sensor 1 which is suitable in particular for measuring differential pressures and flow velocities v1 in oil boreholes. The fiber laser 2 according to the invention comprises two sensor fiber segments 5a, 5b subjected to different pressure loading, in which segments a birefringence proportional to the differential pressure DELTAp=p1-p2, and consequently a beat frequency, is induced between the polarization modes or spatial modes in the fiber laser 2. Exemplary embodiments with polarimetric monomode fibers 5a, 5b and/or with elliptical two-mode fibers 5a, 5b are specified. Furthermore, pressure-resistant multichamber sensor housings 25 and wavelength division multiplex arrangements are disclosed for the fiber laser pressure sensor 1. One advantage is that the pressure signal is wavelength-coded and thus highly insensitive to interference. It can be read out directly fiber-optically over large distances between the passively optical sensor head 1 and the optoelectronic measuring device 12, 17. One application concerns the measurement of a flow velocity v1 with the aid of a Venturi tube 23.

公开(公告)号：DE19807891A1

公开(公告)日：1999-08-26

申请号：DE19807891

申请日：1998-02-25

Applicant: ABB RESEARCH LTD

Inventor： BOHNERT KLAUS ,  BRAENDLE HUBERT

IPC: G01D5/353 ,  G01L1/24 ,  G01L11/02 ,  G02B6/02 ,  G02B6/10 ,  H01S3/06 ,  G01D5/28 ,  E21B47/06 ,  G02B6/124

Abstract: The fiber-laser pressure sensor (1) has a sensor fiber (5, 5a, 5b) of rotationally asymmetrical structure located between the end reflectors (4a, 4b) of the fiber-laser (2). An Independent claim is also included for a fiber-laser sensor (1) used especially for elongation or temperature measurement, comprising a double-refractive, preferably two-mode sensor fiber (5, 5a, 5b) located between the end reflectors (4a, 4b) of the fiber-laser (2).

公开(公告)号：NO20013221L

公开(公告)日：2001-06-27

申请号：NO20013221

申请日：2001-06-27

Applicant: ABB RESEARCH LTD

Inventor： BOHNERT KLAUS ,  BRAENDLE HUBERT

IPC: G01F1/44 ,  G01L1/24 ,  G01L11/02

Abstract: The present invention relates to a fiber laser pressure sensor 1 which is suitable in particular for measuring differential pressures and flow velocities v1 in oil boreholes. The fiber laser 2 according to the invention comprises two sensor fiber segments 5a, 5b subjected to different pressure loading, in which segments a birefringence proportional to the differential pressure DELTAp=p1-p2, and consequently a beat frequency, is induced between the polarization modes or spatial modes in the fiber laser 2. Exemplary embodiments with polarimetric monomode fibers 5a, 5b and/or with elliptical two-mode fibers 5a, 5b are specified. Furthermore, pressure-resistant multichamber sensor housings 25 and wavelength division multiplex arrangements are disclosed for the fiber laser pressure sensor 1. One advantage is that the pressure signal is wavelength-coded and thus highly insensitive to interference. It can be read out directly fiber-optically over large distances between the passively optical sensor head 1 and the optoelectronic measuring device 12, 17. One application concerns the measurement of a flow velocity v1 with the aid of a Venturi tube 23.

公开(公告)号：NO20013152A

公开(公告)日：2001-06-22

申请号：NO20013152

申请日：2001-06-22

Applicant: ABB RESEARCH LTD

Inventor： BOHNERT KLAUS ,  BRAENDLE HUBERT

IPC: G01L11/02

CPC classification number: G01L11/025

公开(公告)号：DE19860409A1

公开(公告)日：2000-06-29

申请号：DE19860409

申请日：1998-12-28

Applicant: ABB RESEARCH LTD

Inventor： BOHNERT KLAUS ,  BRAENDLE HUBERT

IPC: G01L11/02

Abstract: The invention relates to a fibre Bragg-grating sensor (1, 25) which is suitable notably for the measurement of differential pressures and flow velocities v1 in oil boreholes. The operating principle of the sensor provided for in the invention is based on the fact that by means of a transducer (1) having two pressure chambers (7a, 7b) a hydrostatic pressure difference between two liquid or gaseous media (11a, 11b) is converted into a longitudinal fibre expansion or compression and measured via the displacement in the Bragg wavelength DELTA lambda B of at least one fibre Bragg grating (3, 4). Embodiments of the invention consisting of sensors comprising two fibre Bragg gratings (3, 4) having opposite expansion characteristics, temperature-compensated transducers (1) and a plurality of transducers (1) in wavelength multiplex configuration are given as examples. One application of the invention is the measurement of a flow velocity v1 using a Venturi tube (23).

公开(公告)号：DE19649811A1

公开(公告)日：1998-06-04

申请号：DE19649811

申请日：1996-12-02

Applicant: ABB RESEARCH LTD

Inventor： BINZ DIETER DR ,  VOGEL ALBRECHT DR ,  CLAESSON BRITH ,  BRAENDLE HUBERT ,  KEEPING SEAN

IPC: B01L3/00 ,  G01N33/18 ,  G01N35/00 ,  G01N35/02 ,  C12M1/34 ,  C12Q1/00

Abstract: The invention relates to an apparatus for analysing liquids (100). For this purpose, the apparatus (1) has at least one reaction chamber (6, 7, 8, 9) to which the liquid (100) under test and liquids for the analysis can be fed. Apparatuses of this type are used, for example, in sewage treatment plants for analysing waste water (100). These apparatuses (1) can operate for very long periods without maintenance being necessary. The only difficulties posed with them are the storage of bacteria and enzymes which are required for the analysis. These biocomponents have only a restricted service life and must therefore frequently be replaced. In order to make the replacement of the biocomponents simpler, according to the invention, reaction chambers (6, 7, 8 and 9) are provided, which can each be used for only one analysis. They contain at least one biocomponent and are arranged on a movably mounted and exchangeable component (2, 3) which is constructed in the form of a disc (2) or a belt (3).

公开(公告)号：AT438872T

公开(公告)日：2009-08-15

申请号：AT03757630

申请日：2003-11-06

Applicant: ABB RESEARCH LTD

Inventor： BOHNERT KLAUS ,  GABUS PHILIPPE ,  BRAENDLE HUBERT

IPC: G02B6/44

Abstract: The high-frequency insulator (9) is shaped as a hollow cylinder with a set of circumferential insulating fins (3) on the outside. There is a large voltage difference between the upper (1) and lower (2) ends of the insulator. An optical fiber (4) is threaded through a capillary channel (5) which may run in a spiral from the upper to the lower end. The capillary channel is filled with a protective medium (6).