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1. 发明专利

JPH07212946A POLE MOUNT METHOD 失效
公开(公告)号：JPH07212946A
公开(公告)日：1995-08-11
申请号：JP2322394
申请日：1994-01-24
申请人： SUMITOMO ELECTRIC INDUSTRIES , CHUBU ELECTRIC POWER
发明人： TANAKA TAKASHI , MURATA YOSHIKAZU , TACHIKAWA NORIATSU , MURAKI SHIGEHARU , KAWAMURA MASAHIRO
IPC分类号： H02G7/00
摘要： PURPOSE:To branch a service drop cable smoothly and connect the cable smoothly by a method wherein the one half of the upper part of a pole on an arm metal fitting attaching side is used as a branching unit and the other half is used as an apparatus mount unit and the upper part of both halves is used as a transformer attaching unit and those three parts are unified. CONSTITUTION:An arm metal fitting 2 is attached to an arm metal fitting holder 21 on the upper part of a pole 1 and, further, a branching unit 3 is provided. An apparatus mounting unit 4 is provided on the side of a pole l opposite to the branching unit 3 so as to be one-piece with the pole 1. A transformer attaching unit 5 is provided on the uppermost part of the pole 1. A high voltage main line 6 is supported by the uppermost part of the arm metal fitting 2. The high voltage primary line 10 of the high voltage main line 6 is housed in the arm metal fitting 2 and its end is connected to the branching unit 3. A low voltage main line 7 and a remote control transmission line 8 are supported by the lower part of the arm metal fitting 2. The low voltage main line 7 is connected to the low voltage branching connector 12 with an uninterrupted function and the remote control transmission line 8 is connected to the branching unit 3 through a connection line 8a. With this constitution, the compact construction can be achieved, the workabilty and maintenanceability can be improved and the reliability of the insulation protection can be realized.

2. 发明专利

JPH0817212A AIRPLANE WARNING LIGHT DEVICE 失效
公开(公告)号：JPH0817212A
公开(公告)日：1996-01-19
申请号：JP7622593
申请日：1993-03-09
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： HASHIMOTO MAKOTO , FUTAJIMA HIDEAKI , MURATA YOSHIKAZU
IPC分类号： F21S8/00 , F21S1/02
摘要： PURPOSE:To provide sufficient light quantity, and facilitate the maintenance of lamp burn-out, optical fiber rapture, and the like in an airplane warning light device which transmits the light of a light source through optical fibers to a bulb at a high position so as to emit the light. CONSTITUTION:Plural optical fibers are provided so that the respective end portions of the optical fibers are dispersively arranged in a bulb 2. In order to detect lamp burn-out, a light receiving device 6 is installed in a light source device. In order to detect the optical fiber rapture, an optical fiber 3b is installed so as to send back the light in the bulb 2 to a light source device side and a light receiving element 9 is installed so as to receive the light.

3. 发明专利

JPH06291733A OPTICAL FIBER COMMUNICATION SYSTEM 失效
公开(公告)号：JPH06291733A
公开(公告)日：1994-10-18
申请号：JP10053393
申请日：1993-04-01
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： FUTAJIMA HIDEAKI , MURATA YOSHIKAZU
IPC分类号： G02B6/08 , G02B6/28 , G02B6/44 , H04B10/00 , H04B10/25 , H04B10/2507 , H04B10/54 , H04B10/548 , H04B10/12
摘要： PURPOSE:To construct a system receiving a signal in a state that the influence of noise is little at an arbitrary place along an optical fiber by using a leakage type optical fiber and providing a demodulation mechanism where light leaking from an optical fiber side surface is received and it is restored to the original signal on a light receiver. CONSTITUTION:This system is an optical fiber communication system composed of a light source device 1, an optical fiber 2 where light from the light source device 1 is made incident and a light receiver 3 arranged on an arbitrary location along the optical fiber 2, and the light source device 1 has a modulation mechanism changing the light intensity and phases, etc., of a light source in accordance with the change of an inputted signal. In an optical fiber 2, a leakage type optical fiber where light leaks from the side surface is used. The light receiver 3 is provided with a demodulation mechanism receiving light leaking from the side surface of the optical fiber 2 and restoring it to the original signal. By this constitution, a signal can be received at the range where modulated light which is away from a cable reaches without mounting a receiver on the cable itself and a communication system which is strong for electromagnetic waves is provide.

4. 发明专利

JPH05180673A METHOD FOR MEASURING FLOW RATE OF FLUID 失效
公开(公告)号：JPH05180673A
公开(公告)日：1993-07-23
申请号：JP34609491
申请日：1991-12-27
申请人： AGENCY IND SCIENCE TECHN , SUMITOMO ELECTRIC INDUSTRIES
发明人： IITAKA HIROSHI , SATO MUNEZUMI , MURATA YOSHIKAZU , MIYAMOTO TOSHIHARU
IPC分类号： G01F1/32 , G01P5/01 , G02B6/00
摘要： PURPOSE:To achieve a highly accurate and highly reliable measurement of a vibration frequency in a Karman vortex street which is generated within a ductwork by allowing a light in polarization mode which crosses a polarization retention optical fiber to enter and detecting a change frequency of a phase difference of both modes. CONSTITUTION:A cylinder 2 is provided within a ductwork 1 as Karman vortex generator and an optical fiber sensor 3 is provided at the downstream. A polarization retention optical fiber is used as the sensor 3 and a laser beam impinges on the sensor 3 from an HeNe laser 4 with a wavelength of 630mm through a 1/4 wave plate 5 and a lens 6. The laser beam is subjected to circular polarization by the wave plate 5 and then the beam diameter is constricted by the lens 6. A light which is irradiated from the sensor 3 impinges on a light- detection element 9 through a lens 7 and a detection element 8 and a phase difference of both modes of X and Y polarization of light output is observed as light intensity. A signal of phase difference which is converted to an electrical signal by the light-detection element 9 is subjected to frequency analysis by a spectrum analyzer 11 through a detection circuit 10 and a flow rate can be obtained by measuring frequency of the vortex.

5. 发明专利

JPH04332835A CORRECTIVE PROCESSING METHOD OF DISTRIBUTED TEMPERATURE DATA 失效
公开(公告)号：JPH04332835A
公开(公告)日：1992-11-19
申请号：JP10275291
申请日：1991-05-08
申请人： AGENCY IND SCIENCE TECHN , SUMITOMO ELECTRIC INDUSTRIES
发明人： IITAKA HIROSHI , SATO MUNEZUMI , TERAKUBO SATOSHI , MURATA YOSHIKAZU , YAMAGUCHI MASAYOSHI
IPC分类号： G01K3/00 , G01K11/12
摘要： PURPOSE:To obtain temperature data of high measuring precision by a method wherein two or more measuring signals are obtained in respect to the same point by using an optical fiber sensor, these signals are converted into electric signals, measured temperature data of each signal are determined, and correction of removing from each data the effects produced by various factors contained in the measured temperature data in the process of measurement is conducted by making use of the symmetry of the data, at the time of a data analysis after the end of the measurement. CONSTITUTION:A difference between data in going and data in returning is determined by a data difference processing element 34 of a corrective processing apparatus 30 and a slant of a straight line representing the relation of the data on this difference with a distance is determined by a slant computing element 35. Correction of subtracting the product of the value of a half of the slant and each distance from whole data at each position is conducted in a data modifying element 36 and further averaging of the data in going and the data in returning is conducted in an averaging processing element 37.

6. 发明专利

JPH03124890A CABLE CONTAINING INCORPORATED OPTICAL FIBER 失效
公开(公告)号：JPH03124890A
公开(公告)日：1991-05-28
申请号：JP26256189
申请日：1989-10-06
申请人： NIPPON STEEL CORP , SUMITOMO ELECTRIC INDUSTRIES
发明人： SEKIDA KINJI , FUSHIDA TAKASHI , MURATA YOSHIKAZU , YAMAGUCHI MASAYOSHI
IPC分类号： G02B6/44 , D07B1/16 , D07B9/00 , H02G15/02
摘要： PURPOSE:To obtain the subject cable having data communication function, etc., in addition to the function of mooring member while preventing the deterioration of optical fiber in the casting of a copper-zinc alloy by providing a metallic pipe containing an optical fiber and taking the metallic pipe out of a socket frame at a specific position. CONSTITUTION:The main body 10 of the cable is produced by twisting a metallic pipe 12 containing an optical fiber 14 and a number of steel wires 11 and applying an outer covering layer 13 to the surface. Sockets are applied to both ends of the cable main body 10. The steel wires 11 are cut before the blind patch 5 of the socket and the metallic pipe 12 is taken out of the socket frame 1 at a part before a copper-zinc alloy layer 2 cast into the socket. The through part to extend the metallic pipe 12 out of the socket frame 1 is preferably subjected to water-proofing treatment. Usually, an epoxy resin 3 is poured into the opening part of the socket frame 1 to impart fatigue-resistance to the socket.

7. 发明专利

JPH07270637A OPTICAL FIBER FOR CONDENSING SOLAR LIGHT 失效
公开(公告)号：JPH07270637A
公开(公告)日：1995-10-20
申请号：JP5704594
申请日：1994-03-28
申请人： AGENCY IND SCIENCE TECHN , SUMITOMO ELECTRIC INDUSTRIES
发明人： IITAKA HIROSHI , MURATA YOSHIKAZU
IPC分类号： G02B6/00 , C03C13/04 , F21V8/00 , G02B6/028 , G02B6/036 , G02B6/18
摘要： PURPOSE:To directly propagate light obtained by converting the wavelength of solar light into the inside of an optical fiber and to efficiently transmit light energy to a distant part by containing a phosphor converting the light having the wide wavelength out of the solar light made incident from the outside, into the light of the long wavelength stepwise in a core and a clad layer respectively. CONSTITUTION:The optical fiber 10 for condensing solar light is provided with the core 11, the clad layer 12 and a covering layer 13. For example, the phosphor being an organic phosphor and converting the high-energy light of 400-700nm in the wavelength spectrum of the solar light into the light of 700-1000nm is added in the layer 12 and a phosphor being a inorganic phosphor and converting the light of the wavelength 700-1000nm into the light of the wavelength 1000-1600nm by which the transmission loss of the optical fiber is reduced, is added in the core 11. Then, the solar light 17 becomes primary fluorescence 18 by the layer 12 and the fluorescence 18 becomes secondary fluorescence 19 (propagated light 191 and emitted light 192) by the core 11.

8. 发明专利

JPH07225174A OIL-LEAK DETECTION SENSOR USING OPTICAL FIBER 失效
公开(公告)号：JPH07225174A
公开(公告)日：1995-08-22
申请号：JP3760094
申请日：1994-02-10
申请人： SUMITOMO ELECTRIC INDUSTRIES , ELECTRIC POWER DEV CO , KANSAI ELECTRIC POWER CO
发明人： TERAJIMA KAZUKI , HARA TOSHIAKI , YOKOTA KAZUO , NAKURA YUUJI , MURATA YOSHIKAZU
IPC分类号： G01M3/04 , G01M3/38
摘要： PURPOSE:To house an oil-leak detection sensor using an optical fiber so as to be a shape adapted to an OF cable and to surely give a bend to the optical fiber when the oil is leaked. CONSTITUTION:In a sensor, an optical fiber 4 is arranged between an oil- absorbing expansion material 2 and a stress-giving member 3. In the sensor, a pressure face 2A for the oil-absorbing expansion material 2 is formed to be a concave shape, and the outer shape of the sensor is curved at a curvature along the diameter of a covering, made of lead, so that the sensor can be housed between a corrosion-protective layer for an OF cable and the covering made of lead. The leak of an oil is detected by monitoring a change in the transmission loss of the optical fiber 4 by using an OTDR. Since the pressure face is concave-shaped, the optical fiber 4 does not escape to the side and can be pressed surely to the stress-giving member.

9. 发明专利

JPH0727955A OPTICAL FIBER CABLE FOR MEASURING TEMPERATURE OF GEOTHERMAL WELL 失效
公开(公告)号：JPH0727955A
公开(公告)日：1995-01-31
申请号：JP19791393
申请日：1993-07-14
申请人： SUMITOMO ELECTRIC INDUSTRIES , KYUSHU ELECTRIC POWER
发明人： FUTAJIMA HIDEAKI , MURATA YOSHIKAZU , WATANABE KENJI , YASUGA KOICHI , OGATA YASUHIRO
IPC分类号： G02B6/44 , G02B6/00
摘要： PURPOSE:To prevent damage of metallic pipes and an increase in transmission loss by previously specifying the length of optical fibers at a service environmental temp. to the length of the metallic pipes at the same temp. or below specifying a difference between both to a difference between the inside lengths of the metallic pipes or above. CONSTITUTION:The optical fibers are previously provided with surplus lengths and are housed slightly long in the metallic pipes at the time of producing the metallic pipe optical fibers. The lengths of the optical fibers 2 at the time of use are specified to the length of the metallic pipes 1 or below to avert stagnating of the optical fibers in the lower part and generating fine bends therein even at the time of perpendicular laying and to avert generating of tension which arises from a difference in the lengths along the inside of the metallic pipes with the positions in the pipe due to spiral disposition of the metallic pipes 1 in formation into a cable of a twisted structure in such a case. The difference between the length along the centers of the metallic pipes 1 and the length along the inside of the metallic pipes 1 when the optical fibers 2 are nearest the central (center of a spiral shape) side of the cable section is confined to the difference between the inside lengths of the metallic pipes.

10. 发明专利

JPH0727813A PLOTTING METHOD FOR ACCIDENT POINT OF POWER CABLE 失效
公开(公告)号：JPH0727813A
公开(公告)日：1995-01-31
申请号：JP19546093
申请日：1993-07-12
申请人： SUMITOMO ELECTRIC INDUSTRIES , TOKYO ELECTRIC POWER CO
发明人： MIYAMOTO TOSHIHARU , MURATA YOSHIKAZU , SASAKI TATSUO , IIDA SHUNICHI
IPC分类号： G01R31/08 , H01B9/00
摘要： PURPOSE:To provide a method for plotting accident points of power cables by which the plotting distance error can be reduced. CONSTITUTION:In the method for plotting accident points of power cables by which the distance to an accident point is plotted by detecting a surge current generated when a ground accident occurs in a power cable buried underground with current sensors 7, 8, and 9 provided in insulation joint boxes and terminal joint box provided at multiple points and measuring the arriving time lags of the surge current at each sensor 7, 8, and 9 by utilizing a light emitting element and optical fibers 11, optical attenuators 13 are connected to the optical fibers 11 so as to adjust the optical losses of the fibers 11 to become equal to each other.

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