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71. 发明专利

JPH1151300A LEAKAGE MONITORING DEVICE 失效
公开(公告)号：JPH1151300A
公开(公告)日：1999-02-26
申请号：JP20484997
申请日：1997-07-30
申请人： TOSHIBA CORP
发明人： SONODA YUKIO , OCHIAI MAKOTO , SAKUMA MASATAKE , HIKUMA KOJI
IPC分类号： F17D5/06 , G01M3/22 , G01M3/24
摘要： PROBLEM TO BE SOLVED: To detect a leakage position and the like with high precision over a wide range by performing a frequency analysis process on a frequency constituent of sound, which is generated when fluid leaks, on the basis of sound data for the sound collected from a monitoring object by means of ultrasonic wave microphones and detecting fluid leakage on the basis of an increase in the frequency constituent above an audible sound area. SOLUTION: By means of a plurality of non-directional ultrasonic wave microphones 1a, 1b,...1n arranged in a monitoring object, through which fluid such as high pressure gas flows, at certain intervals, leakage sound generated in the case of high pressure gas leakage is collected so as to be converted into an analogue electric signal, which is amplified by means of an amplifier 2 and converted into a digital signal by means of an A/D converter 3 so as to be inputted into a computer 4. In this process, only the high frequency constituent of the leakage sound generated in the case of high pressure gas leakage is taken out so as to be given to a leakage detection unit 6 and a leakage angle estimation unit 7. After gas leakage is detected by means of the leakage detection unit 6, a leakage angle and a leakage sound intensity distribution are found by means of the leakage angle estimation unit 7, and these results are displayed on a monitor 8.

72. 发明专利

JPH10282071A ELECTROMAGNETIC ULTRASONIC TRANSDUCER 失效
公开(公告)号：JPH10282071A
公开(公告)日：1998-10-23
申请号：JP9258097
申请日：1997-04-10
申请人： TOSHIBA CORP
发明人： SATO MICHIO , WATABE KAZUMI , OCHIAI MAKOTO
IPC分类号： G01N29/04 , H04R1/06
摘要： PROBLEM TO BE SOLVED: To restrict decrease of an S/N ratio of detection signals due to mixing of transmission signals, construct a compact structure and enhance detection sensitivity to ultrasonic waves. SOLUTION: The electromagnetic ultrasonic transducer has a magnet assembly 2, a transmission copper wire (first wire) 5 for applying Lorentz force generation electric signals to a material to be inspected, and a detection copper wire (second wire) 6 for receiving electric signals corresponding to reflected ultrasonic signals. The magnet assembly 2 has a plurality of plate-like magnets 4...4 applying Lorentz force generation magnetic signals to the material to be inspected which are layered into one body. The transmission copper wire 5 and detection copper wire 6 are independently arranged at a side face of the magnet assembly 2 at the side of the material to be inspected in a direction of magnetization.

73. 发明专利

JPH06117914A LASER DOPPLER TYPE VIBROMETER 失效
公开(公告)号：JPH06117914A
公开(公告)日：1994-04-28
申请号：JP26763092
申请日：1992-10-06
申请人： TOSHIBA CORP
发明人： OCHIAI MAKOTO , SATO MICHIO
IPC分类号： G01H9/00 , G01P15/03
摘要： PURPOSE:To provide the vibrometer strong against disturbance such as vibration or the fluctuation of air. CONSTITUTION:In the vibrometer, laser beam 2f having two wavelengths is outputted from a laser beam source 12 and inputted to a deflecting beam splitter 3 through the 1/2 wavelength plate 15 of a laser beam splitting means 13 to be split into beams 2c, 2d. One laser beam 2c is passed through a 1/4 wavelength plate 16b and an optical system 7 to irradiate a vibration object 8 and the scattered beam 2e from the vibration object 8 is directed to the deflecting beam splitter 3 through the optical system 7 and the 1/4 wavelength plate 16b. The other laser beam 2d is applied to a mirror 14 serving as a laser beam reflecting means through the 1/4 wavelength plate 16a and the laser beam 2d reflected from the mirror 4 is again directed to the deflecting beam splitter 3 through the 1/4 wavelength plate 16a. The beam 2d and the scattered beam 2e are allowed to interfere with each other by an analyser 17 to form an interference beat signal which is, in turn, made to enter a photodetector 9.

74. 发明专利

JPH08240478A LASER VIBROMETER 失效
公开(公告)号：JPH08240478A
公开(公告)日：1996-09-17
申请号：JP4413795
申请日：1995-03-03
申请人： TOSHIBA CORP
发明人： OCHIAI MAKOTO , HANEDA RIYOKO , ARAKAWA AKIO , HATTORI YOSHIAKI , KANEMOTO SHIGERU
IPC分类号： G01H9/00
摘要： PURPOSE: To enable a highly accurate measurement by a small vibrometer even in a condition where itself vibrates by correcting vibrational information by fixing a transmitting characteristic of a passage into which vibration of the vibrometer itself is mixed, from vibrational information obtained from a vibratory object and an output signal of a vibrational signal processing means. CONSTITUTION: A measuring signal SL is outputted from the laser vibrometer main device 1, and self-oscillation of the device 1 is measured by accelerometers 2X, 2Y and 2Z arranged in X, Y and Z directions in a sensor head 5. Output signals of the accelerometers 2X, 2Y and 2Z are respectively inputted to integral amplifiers 3X, 3Y and 3Z, and are converted into self-oscillation signals NX, NY and NZ. First of all, the measuring signal SL is inputted to a signal correcting device 4X together with the self-oscillation signal NX, and a vibrational level difference and a phase difference by a transmitting characteristic in an X directional passage are corrected. Similar correction is performed by Y directional and Z directional signal correcting devices 4Y and 4Z, and an output signal from which self oscillation in three directions is removed, is finally outputted from the signal correcting device 4Z.

75. 发明专利

JPH0829248A LASER DOPPLER VIBRATION METER 失效
公开(公告)号：JPH0829248A
公开(公告)日：1996-02-02
申请号：JP15976394
申请日：1994-07-12
申请人： TOSHIBA CORP
发明人： OCHIAI MAKOTO , SATO MICHIO , HANEDA RIYOKO , WATABE KAZUMI , SORAMOTO SEIKI
IPC分类号： G01H9/00
摘要： PURPOSE:To provide a laser Doppler vibration meter which can optimize the intensity of laser beams discharged from the vibration meter and at the same time prevent measurement data from deteriorating by detecting the reduction in signal component of input scattered light or self vibration. CONSTITUTION:In a laser Doppler vibration meter with a signal processing device 13 which performs light heterodyne detection of a scattered light 3e of laser beams reflected from a vibration object 10 and the above laser beams by an optical interference system 4 and converts the output light to an electrical signal by a photodetector 12 and then extracting the vibration information of the vibration object 10 from the electrical signal, a signal strength shortage detection means consisting of a constant-voltage generator 15a for generating a signal strength lower-limit value which can be processed by the signal processing device 13 and a comparator 16a for comparing the output signal of a photodetector 12 and the generation signal of the constant-voltage generator 15a is provided.

76. 发明专利

JPH06337238A PARAMETER DISTRIBUTION EXTRACTING APPARATUS 失效
公开(公告)号：JPH06337238A
公开(公告)日：1994-12-06
申请号：JP12675693
申请日：1993-05-28
申请人： TOSHIBA CORP
发明人： FUJII MAKOTO , OCHIAI MAKOTO , HANEDA RIYOKO
IPC分类号： G01M99/00 , G21C17/00 , G01M19/00
摘要： PURPOSE:To perform labor conservation of monitor and diagnosis by storing a plurality of extraction strategies of necessary data from stored parameter distribution data, selecting data extraction strategy according to an object to be monitored, extracting only data regarding an apparatus to be measured, and separately storing it. CONSTITUTION:Vibration distribution data of an apparatus to be monitored collected by a laser vibration meter 10 is stored in a vibration memory 13 of a parameter distribution extractor 12. The data is converted and synthesized to a two-dimensional image by a vibration image synthesizer 14, and displayed on an image display unit 15. On the other hand, three extraction strategies are stored in a data extraction strategy memory 16, and an extraction strategy selector 17 selects one strategy corresponding to an object to be monitored from them. The selected strategy is applied to the vibration distribution data by a data extractor 18, only parameter corresponding to the apparatus to be monitored, and stored in a monitor parameter memory 19. This is sent to an apparatus state monitor as required, and also sent to the synthesizer 14, and displayed on the unit 15.

77. 发明专利

JPH05296956A 失效
公开(公告)号：JPH05296956A
公开(公告)日：1993-11-12
申请号：JP10703592
申请日：1992-04-24
申请人： TOSHIBA CORP
发明人： OCHIAI MAKOTO , SATO MICHIO
IPC分类号： G01B11/30 , G01N21/88 , G01N25/72
摘要： PURPOSE:To provide a surface flaw detection device which is capable of inspecting non-metallic materials, as well as metals, as targets for surface flaw detection, permits easy surface flaw detection of a narrow region or a remote point, permits surface defect to be recorded by an image, etc., and further permits detailed inspection of a part of the sample. CONSTITUTION:The device includes a heating device 21 for heating the surface of a material 1 to be inspected with laser beam 26, an infrared rays detection device 22 for detecting infrared rays 29 which are radiated from the material 1 to be inspected by heating, and a surface defect detection device 23 for detecting surface defect from a signal which is obtained by the infrared rays detection device 22.

78. 发明专利

JP2003149213A ULTRASONIC INSPECTING APPARATUS, ULTRASONIC TRANSDUCER, AND INSPECTING APPARATUS 审中-公开
公开(公告)号：JP2003149213A
公开(公告)日：2003-05-21
申请号：JP2001348282
申请日：2001-11-14
申请人： TOSHIBA CORP
发明人： KARASAWA HIROICHI , NAKAMOTO MASAYUKI , OCHIAI MAKOTO , FUKUDA KATSUYOSHI
IPC分类号： G01N29/06 , B06B1/06 , G01N29/00 , G01N29/24 , H04R1/34
摘要： PROBLEM TO BE SOLVED: To provide an ultrasonic inspecting apparatus, an ultrasonic transducer, and an inspecting apparatus capable of easily and speedily performing inspection with high resolution. SOLUTION: Bariumn titanates (BaTiO3 ) or lead zirconate titanates (PZT) are used for a piezoelectric body constituting the ultrasonic transducer, and its thickness is between 0.1-100 μm. The ultrasonic transducer is provided with a drive part capable of driving any one among piezoelectric layers, a detecting part for detecting electric signals generated by the plurality of the piezoelectric layers from echoes from an object to be irradiated with ultrasonic waves generated by the driven piezoelectric layers, and a processing part for processing the state of the object to be irradiated from the detected electric signals so as to be visualized.

79. 发明专利

JP2002257793A LASOR ULTRASONIC INSPECTION DEVICE 失效
公开(公告)号：JP2002257793A
公开(公告)日：2002-09-11
申请号：JP2001055948
申请日：2001-02-28
申请人： TOSHIBA CORP
发明人： OCHIAI MAKOTO , KURODA HIDEHIKO , MIURA TAKAHIRO , SORAMOTO SEIKI , NARUSE KATSUHIKO
IPC分类号： G01N29/00 , G01N29/04 , G21C17/003 , G01N29/10
摘要： PROBLEM TO BE SOLVED: To cleanly ensure an optical path for transmitting and receiving ultrasonic waves under an inspection environment such as underwater environment, dusty environment or the like. SOLUTION: This device comprises substituting means 18, 19 and 20 for substituting at least one of optical paths for guiding a first laser beam PL and second laser beam IL to the surface of a material to be inspected 3 by a fluid easily transmitting the wavelength of a first laser beam source 1 and the wavelength of a second laser beam source 4.

80. 发明专利

JP2001232315A LASER CLEANING DEVICE 失效
公开(公告)号：JP2001232315A
公开(公告)日：2001-08-28
申请号：JP2000050886
申请日：2000-02-28
申请人： TOSHIBA CORP , TOSHIBA ENGINEERING CO
发明人： OCHIAI MAKOTO , CHIHOSHI ATSUSHI , SANO YUJI , SHIMA MASAYUKI , NITTO KOICHI , BUTSUEN TAKASHI
IPC分类号： B08B7/00
摘要： PROBLEM TO BE SOLVED: To perform the optimum execution for removing deposit without the preliminary conditioning with respect to analysis, survey and execution of the material in detail. SOLUTION: The removing process in which the deposit on a base material 4 as the object is removed by a laser beam is monitored by a monitoring means 8 and the removal circumstance is judged by a circumstance judging means 9 in accordance with output signals of the monitoring means 8. Further, a control means 10 controls the irradiation conditions of the laser beam in accordance with a judgment result of the circumstance judging means 9.

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