FAILURE DIAGNOSIS METHOD, NOISE MEASUREMENT DEVICE, AND FAILURE DIAGNOSIS SYSTEM

摘要

The present invention determines exactly when a failure occurred in a noise meter. The present invention relates to a noise measurement device 20 comprising: a noise meter 10 having a main microphone 11 capable of measuring noise; and a secondary microphone 21 capable of measuring noise simultaneously with the main microphone 11. The present invention also relates to a failure diagnosis system 1 comprising the noise measurement device 20 and a failure diagnosis device 30 capable of diagnosing a failure of the main microphone 11. The present invention also relates to a failure diagnosis method for diagnosing a failure of the main microphone 11. In the failure diagnosis system 1 and method, the presence or absence of a failure of the main microphone 11 in the noise meter 10 is diagnosed on the basis of comparison of main and secondary noise data respectively obtained by the main and secondary microphones 11, 21 in each of a plurality of recording periods.