SOUND COLLECTING SENSOR DIAGNOSTIC DEVICE, SOUND COLLECTING SENSOR DIAGNOSTIC SYSTEM, SOUND COLLECTING SENSOR DIAGNOSTIC METHOD AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a sound collecting sensor diagnostic device capable of easily and accurately diagnosing soundness of a sound collecting sensor.;SOLUTION: A sound collecting sensor diagnostic device 1 comprises: a tone signal acceptance part 11 which accepts input of a reference tone signal via a sound collecting sensor 20 to be diagnosed; a sound pressure distribution calculation part 12 which calculates distribution of sound pressure values for every frequency component of the reference tone signal; a sound pressure threshold calculation part 13 which calculates a sound pressure threshold on the basis of the distribution of the sound pressure values for every frequency component; and an abnormality determination part 14 which determines the presence/absence of an abnormality of the sound collecting sensor 20 by comparing the distribution of the sound pressure values for every frequency component of the reference tone signal, newly acquired by the tone signal acceptance part 11 and the sound pressure distribution calculation part 12 with the previously calculated sound pressure threshold.;COPYRIGHT: (C)2015,JPO&INPIT