公开(公告)号：CA1206347A

公开(公告)日：1986-06-24

申请号：CA426319

申请日：1983-04-20

Applicant: ASEA AB

Inventor： BROGARDH TORGNY ,  HOEK BERTIL ,  OVREN CHRISTER

IPC: F02P7/073 ,  G01B11/02 ,  G01D5/26 ,  G01D5/353 ,  G01L9/00 ,  G02B6/42 ,  G01N21/62

Abstract: _ 9 _ An optical position-measuring sensor has a monolithic structure which includes at least two volumes of photoluminescent material, which on excitation emit photoluminescent light with non-identical spectra. The at least two volumes are supported in the sensor by a resilient part (e.g. a beam or diaphragm), the deflection of which determines the wavelength distribution of the luminescent light which is coupled into an optical wave conductor (e.g. a light fiber) terminating in the sensor.

公开(公告)号：CA1205300A

公开(公告)日：1986-06-03

申请号：CA428972

申请日：1983-05-26

Applicant: ASEA AB

Inventor： BROGARDH TORGNY ,  HOEK BERTIL ,  OVREN CHRISTER

IPC: G01R33/032 ,  G01B11/16 ,  G01D5/26 ,  G01D5/353 ,  G01D21/00 ,  G01K11/32 ,  G01R15/24 ,  G02B6/00 ,  G02B6/02 ,  G01N21/64

Abstract: A fiber optical sensor for detecting a change in a physical quantity which comprises a body of a solid, and substantially optically transparent bonding material, the bonding material determining the mechanical properties of said body. At least 1% by weight of atomically localized liminescent centers are included as a solution in the bonding material, these centers substantially determining the luminescent properties of said body.

公开(公告)号：CA1199197A

公开(公告)日：1986-01-14

申请号：CA425040

申请日：1983-03-31

Applicant: ASEA AB

Inventor： BROGARDH TORGNY ,  HOEK BERTIL ,  OVREN CHRISTER

IPC: G01B11/00 ,  G01D5/26 ,  G01D5/353 ,  G01J1/58 ,  G01L1/24 ,  G02B6/00 ,  G01N21/64

Abstract: A fiber optical luminescence measuring system for measuring a change in a physical quantity employs a transmitter/receiver unit and a sensor unit for the physical quantity optically linked by at least one optical fiber. The sensor unit is arranged to emit luminescent light with at least two different decay time constants, where the quotient between the intensities of emitted luminescent light having the different decay times corresponds to a measure of the quantity to be measured.

公开(公告)号：DE3409618A1

公开(公告)日：1984-10-18

申请号：DE3409618

申请日：1984-03-16

Applicant: ASEA AB

Inventor： BROGAARDH TORGNY PROF ,  HOEK BERTIL ,  OVREN CHRISTER DR

IPC: G01D5/347 ,  G01D5/26 ,  G02B6/42

Abstract: A fiber-optic measuring device for measuring physical quantities, comprising a transducer unit and an electronic unit which are interconnected by means of at least one optic fiber. The measuring transducer unit comprises at least two photoluminescent elements, of which at least one is positioned in the ray path of light from the fiber, at least partly behind another element. The physical quantities to be measured are arranged to influence the light transmission between the photo-luminescent elements. The electronic unit includes at least two light sources having different emission spectra which are so chosen in relation to the absorption and transmission spectra of the photo-luminescent elements that one light source is arranged to excite substantially one of the photo-luminescent elements whereas the other light sources at least partly excite the other element or elements.

公开(公告)号：CA1221556A

公开(公告)日：1987-05-12

申请号：CA450211

申请日：1984-03-22

Applicant: ASEA AB

Inventor： BROGARDH TORGNY ,  HOEK BERTIL ,  OVREN CHRISTER

IPC: G01D5/347 ,  G01D5/26 ,  G02B6/42 ,  G01N21/17

Abstract: A fiber-optic measuring device for measuring physical quantities, comprising a transducer unit and an electronic unit which are interconnected by means of at least one optic fiber. The measuring device is characterized in that the transducer unit comprises at least two photoluminescent elements, of which at least one is positioned in the ray path of light from the fiber, at least partly behind another element. The physical quantities to be measured are arranged to influence the light transmission between the photo-luminescent elements. The electronic unit includes at least two light sources having different emission spectra which are so chosen in relation to the absorption and transmission spectra of the photo-lumin-escent elements that one light source is arranged to excite substantially one of the photo-luminescent elements whereas the other light sources at least partly excite the other element or elements.

公开(公告)号：CA1218725A

公开(公告)日：1987-03-03

申请号：CA428971

申请日：1983-05-26

Applicant: ASEA AB

Inventor： BROGARDH TORGNY ,  HOEK BERTIL ,  OVREN CHRISTER

IPC: G01P15/093 ,  G01B11/00 ,  G01D5/26 ,  G01D5/30 ,  G01D5/353

Abstract: A fiber optical measuring device for measuring dynamic movements between a boundary surface of an optical fiber and a boundary surface of a movement-sensing body. The optical fiber is adapted to transmit optical energy to and from the boundary surfaces and at least one of the boundary surfaces includes a photo-luminescent material, the optical energy reflected from the boundary surface of the body being dependent on the relative position between the two boundary surfaces.