Acoustic sensor apparatus and acoustic camera for using MEMS microphone array

摘要

An acoustic camera for using a MEMS microphone array comprises: 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.

主权项

1. An acoustic sensor apparatus for using MEMS microphone array, comprising a print circuit board (20) on which the plurality of MEMS microphones (10) are mounted,
wherein the MEMS microphone (10) has two to ten branches extending radially, and two to ten MEMS microphones (10) are arranged in a branch, wherein the MEMS microphone (10) in a branch may be arranged radially on a straight line, and otherwise arranged in a spiral shape, the shape being more curved in a rotation direction as it goes further radially.