Title:
DISPLACEMENT GAUGE
Document Type and Number:
Japanese Patent JPS63217206
Kind Code:
A
Abstract:
PURPOSE:To remove a measurement error due to the influence of an electromagnetic field from a detected quantity by using an end surface of an optical fiber belt for a sensor part and transmitting light information to a photoelectric conversion part by the optical fiber belt. CONSTITUTION:Light from a laser light emission body (a) fitted to an object A of measurement is photodetected on one end surface of the optical fiber belt 1 and guided to a place where there is no electromagnetic field influence while its incident light position is held. Then the light is emitted from the other end surface and is made incident to a PSD 2 constituting a photoelectric conversion part, and a displacement quantity is converted continuously into an electric signal, which is outputted. The signal outputted from this PSD 2 is inputted to an arithmetic part 3 and processed into a necessary physical quantity by analog arithmetic and digital arithmetic.
Inventors:
ITO HIROSHI
ONO KENJI
TAKAHATA KENJI
KASUGAI HARUHIKO
ONO KENJI
TAKAHATA KENJI
KASUGAI HARUHIKO
Application Number:
JP5137287A
Publication Date:
September 09, 1988
Filing Date:
March 06, 1987
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
CHURYO ENG
CHURYO ENG
International Classes:
G01D5/353; G01B11/00; G01D5/26; G02B6/00; (IPC1-7): G01B11/00; G01D5/26; G02B6/00
Attorney, Agent or Firm:
Takehiko Suzue
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