Title:
【発明の名称】照明器具の弾発音測定装置
Document Type and Number:
Japanese Patent JP2980284
Kind Code:
B1
Abstract:
PROBLEM TO BE SOLVED: To automatically measure creak of a luminaire with high precision, to accurately detect the occurrence position of creak and to largely shorten the detecting time. SOLUTION: Vibration sensors 27A-27C detecting the vibrations by creak occurring on various portions are set at optional positions of the housing main body 11 of a spot light 10, creak measurement signals detected by the vibration sensors 27A-27C are sent to a recording device 30, the recording device 30 is activated when the levels of the creak measurement signals become a predetermined set value or above, and the wave-forms of the signals detected by the vibration sensors 27A-27C are recorded on the recording paper 51. The wave- forms of the signals detected by the vibration sensors 27A-27C are displayed on the liquid crystal display section 31 of the recording device 30. The occurrence positions of the creak are specified by observing the amplitude levels of the wave-forms corresponding to the vibration sensors 27A-27C concurrently recorded on the recording paper 51 and the fitting positions of the vibration sensors 27A-27C.
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Inventors:
MORITA HIRONOBU
Application Number:
JP32961198A
Publication Date:
November 22, 1999
Filing Date:
November 19, 1998
Export Citation:
Assignee:
MATSUMURA DENKI SEISAKUSHO KK
International Classes:
G01D9/00; F21S10/00; G01D9/30; G01D15/24; G01H11/08; G01M99/00; (IPC1-7): G01M19/00
Attorney, Agent or Firm:
Shoichi Monma