Abstract:  In order to improve the recognition and positioning ability of imaging monitoring technology in three-dimensional space, this paper takes acoustic imaging as an example to study the three-dimensional spatial location method of sound source. Through the coordinate transformation of the monitoring images of two acoustic cameras, the two-dimensional sound field distribution information and visible video images are mapped to the three-dimensional space, and the three-dimensional space structure of the monitoring object is superimposed to realize the automatic identification and regional positioning of the leakage noise points. The simulation calculation and simulation experiment show that the method realizes the three-dimensional spatial location of the leak source, and realizes the unattended leak identification and alarm by locating the leak parts, and improves the application effect of imaging monitoring technology in the leak monitoring scene of the hazardous chemical industry.

Key words:  acoustic imaging, three-dimensional positioning, leak detection