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1. 发明专利

JP2000205962A TEMPERATURE SENSOR 失效
公开(公告)号：JP2000205962A
公开(公告)日：2000-07-28
申请号：JP1199299
申请日：1999-01-20
申请人： AUXITROL SA
发明人： VALLY JOHANA , LEGRAS OLIVIER , HERVE PHILIPPE , PERONNET FREDERIC , BERNARD MARC , COLLET ERIC
IPC分类号： G01J5/00 , G01J5/06 , G01J5/60 , G01J5/02
摘要： PROBLEM TO BE SOLVED: To provide a sensor for use in the fields of aircrafts and motor vehicles, for measuring temperature and/or concentration in a combustion chamber, particularly for measuring the temperature and/or concentration of combustion gas in a fixed gas turbine field. SOLUTION: In this temperature measuring sensor for a gas or gas free radical, including a photodetector means 7 and calculation means 5 for determining at least one temperature and/or concentration in correspondence with measurements made by the photodetectors 7, the photodetector means 7 are juxtaposed in a casing, and fixing means 6 for dispersing received radiation onto the photodetectors 7 as the function of its wavelength are further disposed within the casing. The photodetector means make the measurements of the radiation at the same time and the casing includes an optical head 2 which causes the radiation radiated from the gas or free radical to advance onto the dispersion means 6, the combination of the dispersion means 6 and the photodetectors 7 generating resolution for a wavelength of 0.1% or less. The number of photodetectors of the sensor is at least three.

2. 发明专利

DE69530021D1 未知
公开(公告)号：DE69530021D1
公开(公告)日：2003-04-30
申请号：DE69530021
申请日：1995-04-25
申请人： AUXITROL SA
发明人： LEGRAS OLIVIER
IPC分类号： G01F23/30 , G01F23/00
摘要： The appts. comprises a probe (1) attached to a flexible measuring tape (2) coiled in a support mounted at the top of the tank in which liquid level is to be measured. The probe (1) consists of an enclosure (100) containing a sensing element (200) which is a metallic wave guide with four sections. Mechanical vibrations at a predetermined frequency (fi) are initiated in the sensing element (200) by a transducer (201) driven by electronic circuits. The transducer detects changes in the pattern of reflected vibrations when the lower face (208) of the sensor makes contact with the surface of the liquid.

3. 发明专利

ES2056407T3 未知
公开(公告)号：ES2056407T3
公开(公告)日：1994-10-01
申请号：ES90402080
申请日：1990-07-19
申请人： AUXITROL SA
发明人： DIEULESAINT EUGENE , ROYER DANIEL , LEGRAS OLIVIER
IPC分类号： G01F23/296 , G01F23/28
摘要： The detector for detecting the presence of a liquid comprises: a) a metal waveguide having a solid cylindrical top first portion of relatively small section with an outside diameter having a first value d1, which first portion is fixed on a support, a cylindrical rigid bottom second portion whose outside diameter has a second value d2 greater than the first value d1, which second portion extends the first portion downwards and is connected thereto by a short linking portion; b) transducer means disposed in the vicinity of the top portion of the waveguide; and c) electronic processing means. The value of the frequency at which the transducer means are excited is selected in such a manner that acoustic wave trains propagate in the cylindrical first portion at the group velocity of low frequency waves, and propagate in the cylindrical second portion at the minimum group velocity corresponding to the point of inflection in the curve of phase velocity as a function of frequency.

4. 发明专利

FR2773879A1 未知
公开(公告)号：FR2773879A1
公开(公告)日：1999-07-23
申请号：FR9809996
申请日：1998-08-04
申请人： AUXITROL SA
发明人： VALLY JOHANA , LEGRAS OLIVIER , HERVE PHILIPPE , PERONNET FREDERIC , BERNARD MARC , COLLET ERIC
IPC分类号： G01J5/00 , G01J5/06 , G01J5/60 , G01J5/20 , G01N21/71 , G01N33/00
摘要： An optical head (2) channels a ray emitted by the gas or radical onto a means (6) of dispersion, which disperses the ray over at least three photodetectors depending on its wavelength. These items are all in a box. The photodetectors measure the ray simultaneously. The combination of the means of dispersion and the photodetectors allows resolution of wavelengths of less than 0.1%. Device for measuring temperature and/or concentration of a gas or a gaseous free radical containing a photodetector (7) and means of calculating (5) which determine the temperature and/or concentration as a function of the measurements made by the photodetectors. The means of dispersing the ray include a concave diffraction grating. The device measures CO2 concentration, with the photodetectors operating at between 2380 and 2400 cm 1. The device also includes an optical fiber to channel the ray onto the optical head, and means of modulation (9) on the ray path. The optical head is telescopic. There are at least five photodetectors. The means of calculating determine a temperature and/or concentration profile in the axis of observation of the optical means. The means of calculating also include a memory in which a thermodynamic model of the gas is recorded and the thermodynamic parameters of different layers of gas can be varied to compare the analyzed spectra with the measured spectra. The device is mounted on an airplane or car, for measuring the temperature in the combustion chamber of a terrestrial gas turbine.

5. 发明专利

AT105933T 未知
公开(公告)号：AT105933T
公开(公告)日：1994-06-15
申请号：AT90402080
申请日：1990-07-19
申请人： AUXITROL SA
发明人： DIEULESAINT EUGENE , ROYER DANIEL , LEGRAS OLIVIER
IPC分类号： G01F23/296 , G01F23/28
摘要： The detector for detecting the presence of a liquid comprises: a) a metal waveguide having a solid cylindrical top first portion of relatively small section with an outside diameter having a first value d1, which first portion is fixed on a support, a cylindrical rigid bottom second portion whose outside diameter has a second value d2 greater than the first value d1, which second portion extends the first portion downwards and is connected thereto by a short linking portion; b) transducer means disposed in the vicinity of the top portion of the waveguide; and c) electronic processing means. The value of the frequency at which the transducer means are excited is selected in such a manner that acoustic wave trains propagate in the cylindrical first portion at the group velocity of low frequency waves, and propagate in the cylindrical second portion at the minimum group velocity corresponding to the point of inflection in the curve of phase velocity as a function of frequency.

6. 发明专利

DE69008955T2 未知
公开(公告)号：DE69008955T2
公开(公告)日：1994-11-03
申请号：DE69008955
申请日：1990-07-19
申请人： AUXITROL SA
发明人： DIEULESAINT EUGENE , ROYER DANIEL , LEGRAS OLIVIER
IPC分类号： G01F23/296 , G01F23/28
摘要： The detector for detecting the presence of a liquid comprises: a) a metal waveguide having a solid cylindrical top first portion of relatively small section with an outside diameter having a first value d1, which first portion is fixed on a support, a cylindrical rigid bottom second portion whose outside diameter has a second value d2 greater than the first value d1, which second portion extends the first portion downwards and is connected thereto by a short linking portion; b) transducer means disposed in the vicinity of the top portion of the waveguide; and c) electronic processing means. The value of the frequency at which the transducer means are excited is selected in such a manner that acoustic wave trains propagate in the cylindrical first portion at the group velocity of low frequency waves, and propagate in the cylindrical second portion at the minimum group velocity corresponding to the point of inflection in the curve of phase velocity as a function of frequency.

7. 发明专利

DK0409732T3 未知
公开(公告)号：DK0409732T3
公开(公告)日：1994-09-05
申请号：DK90402080
申请日：1990-07-19
申请人： AUXITROL SA
发明人： DIEULESAINT EUGENE , ROYER DANIEL , LEGRAS OLIVIER
IPC分类号： G01F23/296 , G01F23/28
摘要： The detector for detecting the presence of a liquid comprises: a) a metal waveguide having a solid cylindrical top first portion of relatively small section with an outside diameter having a first value d1, which first portion is fixed on a support, a cylindrical rigid bottom second portion whose outside diameter has a second value d2 greater than the first value d1, which second portion extends the first portion downwards and is connected thereto by a short linking portion; b) transducer means disposed in the vicinity of the top portion of the waveguide; and c) electronic processing means. The value of the frequency at which the transducer means are excited is selected in such a manner that acoustic wave trains propagate in the cylindrical first portion at the group velocity of low frequency waves, and propagate in the cylindrical second portion at the minimum group velocity corresponding to the point of inflection in the curve of phase velocity as a function of frequency.

8. 发明专利

FR2773879B1 未知
公开(公告)号：FR2773879B1
公开(公告)日：2001-01-26
申请号：FR9809996
申请日：1998-08-04
申请人： AUXITROL SA
发明人： VALLY JOHANA , LEGRAS OLIVIER , HERVE PHILIPPE , PERONNET FREDERIC , BERNARD MARC , COLLET ERIC
IPC分类号： G01J5/00 , G01J5/06 , G01J5/60 , G01J5/20 , G01N21/71 , G01N33/00
摘要： An optical head (2) channels a ray emitted by the gas or radical onto a means (6) of dispersion, which disperses the ray over at least three photodetectors depending on its wavelength. These items are all in a box. The photodetectors measure the ray simultaneously. The combination of the means of dispersion and the photodetectors allows resolution of wavelengths of less than 0.1%. Device for measuring temperature and/or concentration of a gas or a gaseous free radical containing a photodetector (7) and means of calculating (5) which determine the temperature and/or concentration as a function of the measurements made by the photodetectors. The means of dispersing the ray include a concave diffraction grating. The device measures CO2 concentration, with the photodetectors operating at between 2380 and 2400 cm 1. The device also includes an optical fiber to channel the ray onto the optical head, and means of modulation (9) on the ray path. The optical head is telescopic. There are at least five photodetectors. The means of calculating determine a temperature and/or concentration profile in the axis of observation of the optical means. The means of calculating also include a memory in which a thermodynamic model of the gas is recorded and the thermodynamic parameters of different layers of gas can be varied to compare the analyzed spectra with the measured spectra. The device is mounted on an airplane or car, for measuring the temperature in the combustion chamber of a terrestrial gas turbine.

9. 发明专利

FR2773878B1 未知
公开(公告)号：FR2773878B1
公开(公告)日：2000-04-07
申请号：FR9800543
申请日：1998-01-20
申请人： AUXITROL SA
发明人： VALLY JOHANA , LEGRAS OLIVIER , HERVE PHILIPPE , PERONNET FREDERIC , BERNARD MARC , COLLET ERIC
IPC分类号： G01J5/00 , G01J5/06 , G01J5/60 , G01J5/20 , G01N21/70 , G01N33/00

10. 发明专利

DE69008955D1 未知
公开(公告)号：DE69008955D1
公开(公告)日：1994-06-23
申请号：DE69008955
申请日：1990-07-19
申请人： AUXITROL SA
发明人： DIEULESAINT EUGENE , ROYER DANIEL , LEGRAS OLIVIER
IPC分类号： G01F23/296 , G01F23/28
摘要： The detector for detecting the presence of a liquid comprises: a) a metal waveguide having a solid cylindrical top first portion of relatively small section with an outside diameter having a first value d1, which first portion is fixed on a support, a cylindrical rigid bottom second portion whose outside diameter has a second value d2 greater than the first value d1, which second portion extends the first portion downwards and is connected thereto by a short linking portion; b) transducer means disposed in the vicinity of the top portion of the waveguide; and c) electronic processing means. The value of the frequency at which the transducer means are excited is selected in such a manner that acoustic wave trains propagate in the cylindrical first portion at the group velocity of low frequency waves, and propagate in the cylindrical second portion at the minimum group velocity corresponding to the point of inflection in the curve of phase velocity as a function of frequency.

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