Inspection apparatus, and abnormality detection method
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G01M-007/00
G01H-001/00
출원번호
US-0638332
(2015-03-04)
등록번호
US-9702754
(2017-07-11)
우선권정보
JP-2014-056319 (2014-03-19)
발명자
/ 주소
Sone, Satoshi
출원인 / 주소
KABUSHIKI KAISHA TOSHIBA
대리인 / 주소
Oblon, McClelland, Maier & Neustadt, L.L.P.
인용정보
피인용 횟수 :
0인용 특허 :
3
초록▼
In general, according to one embodiment, an inspection apparatus includes a disposition; a vibration detector configured to output a signal corresponding to vibration of the inspection object; a determination module configured to determine presence/absence of abnormality of the inspection object and
In general, according to one embodiment, an inspection apparatus includes a disposition; a vibration detector configured to output a signal corresponding to vibration of the inspection object; a determination module configured to determine presence/absence of abnormality of the inspection object and configured to Fourier-transform an output result of the vibration detector at a time when the inspection object is disposed on the disposition section, to create vibration information indicative of vibration power of a characteristic frequency of each of structural elements of the disposition section, and to determine presence/absence of abnormality of the inspection apparatus, based on the vibration information; and a transmission module configured to transmit an output signal of the vibration detector to the determination module.
대표청구항▼
1. An inspection apparatus comprising: a disposition section on which an inspection object to be inspected is disposed;a vibration detector configured to output a signal corresponding to vibration of the inspection object;a determination module configured to determine presence/absence of abnormality
1. An inspection apparatus comprising: a disposition section on which an inspection object to be inspected is disposed;a vibration detector configured to output a signal corresponding to vibration of the inspection object;a determination module configured to determine presence/absence of abnormality of the inspection object, based on an output result of the vibration detector, and configured to Fourier-transform an output result of the vibration detector at a time when the inspection object is disposed on the disposition section, to create vibration information indicative of vibration power of a characteristic frequency of each of structural elements of the disposition section, and to determine presence/absence of abnormality of the inspection apparatus, based on the vibration information; anda transmission module configured to transmit an output signal of the vibration detector to the determination module,wherein the determination module is configured to compare the vibration power of the vibration information and a threshold which is preset, to determine that no abnormality is present in the vibration detector or the transmission module if the vibration power of the vibration information is the threshold or more, and to determine that abnormality is present in the vibration detector or the transmission module if the vibration power of the vibration information is less than the threshold. 2. The inspection apparatus of claim 1, wherein the determination module is configured to determine the presence/absence of abnormality of each of the structural elements, based on a deviation of the characteristic frequency indicated by the vibration information, relative to the characteristic frequency in a reference normal state of each of the structural elements of the disposition section. 3. The inspection apparatus of claim 2, wherein the determination module is configured to determine that each of the structural elements of the disposition section is normal if the deviation of the characteristic frequency indicated by the vibration information, relative to the characteristic frequency in the reference normal state of each of the structural elements is within a tolerable range which is preset for each of the structural elements, and to determine that each of the structural elements of the disposition section is abnormal if the deviation of the characteristic frequency is out of the tolerable range. 4. The inspection apparatus of claim 1, wherein the determination module is configured to determine a kind of abnormality, based on a deviation amount of the characteristic frequency indicated by the vibration information, relative to the characteristic frequency in a reference normal state of each of the structural elements of the disposition section. 5. An abnormality detection method of detecting abnormality of an inspection apparatus comprising a disposition section on which an inspection object to be inspected is disposed, a vibration detector configured to output a signal corresponding to vibration of the inspection object, a determination module configured to determine presence/absence of abnormality of the inspection object, based on an output result of the vibration detector, and a transmission module configured to transmit an output signal of the vibration detector to the determination module, the method comprising: Fourier-transforming an output result of the vibration detector at a time when the inspection object is disposed on the disposition section, and creating vibration information indicative of vibration power of a characteristic frequency of each of structural elements of the disposition section;determining presence/absence of abnormality of the inspection apparatus, based on the vibration information;comparing the vibration power of the vibration information and a threshold which is preset; anddetermining that no abnormality is present in the vibration detector or the transmission module if the vibration power of the vibration information is the threshold or more, and determining that abnormality is present in the vibration detector or the transmission module if the vibration power of the vibration information is less than the threshold. 6. The abnormality detection method of claim 5, further comprising determining the presence/absence of abnormality of each of the structural elements, based on a deviation of the characteristic frequency indicated by the vibration information, relative to the characteristic frequency in a reference normal state of each of the structural elements of the disposition section. 7. The abnormality detection method of claim 6, further comprising determining that each of the structural elements of the disposition section is normal if the deviation of the characteristic frequency indicated by the vibration information, relative to the characteristic frequency in the reference normal state of each of the structural elements is within a tolerable range which is preset for each of the structural elements, and determining that each of the structural elements of the disposition section is abnormal if the deviation of the characteristic frequency is out of the tolerable range. 8. The abnormality detection method of claim 5, further comprising determining a kind of abnormality, based on a deviation amount of the characteristic frequency indicated by the vibration information, relative to the characteristic frequency in a reference normal state of each of the structural elements of the disposition section.
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이 특허에 인용된 특허 (3)
Shima Ichiji (Kansai Electric Power Company Incorporated ; Sohgo Gijyutsu Kenkyusho ; No. 1 Nakohji Ichinotsubo ; Amagasaki-shi ; Hyogo-ken JPX) Teshima Hiroshi (Kansai Electric Power Company Incorpo, Judging system for detecting failure of machine.
Lau Peter W. (Gloucester CAX) Tardif Yvon G. (Gatineau CAX), Method and apparatus for non-destructive testing the quality of manufacturing wood panels.
Tsuboi Kiyoshi (Musashino JPX) Yamamoto Shigeharu (Yokohama JPX), Method and apparatus for predicting the life of an object to be measured using longitudinal waves.
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