ACOUSTIC DETECTION DEVICE AND ACOUSTIC CAMERA USING A MEMS MICROPHONE ARRAY

摘要

The present invention discloses an acoustic camera for using a MEMS microphone array comprising: an acoustic sensor apparatus 30 comprising a print circuit board 20 on which the plural of MEMS microphone 10 are mounted, to send signals for the detected sound to a data collection unit 40; a data collection unit 40 connected to the acoustic sensor apparatus 30, which samples analog signals related to sound transmitted from the acoustic sensor apparatus 30 to transform into digital signals and transmit them to the central processing unit 40; a central processing unit 50 connected to the data collection unit 40, which calculates noise level based on digital signals related to sound transmitted from the data collection unit 40; and a display unit 60 which is connected to the central processing unit 50, which displays in color the noise level calculated at the central processing unit.