15 Research on AE Source Location …
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Fig. 15.1 Triangle location
net of the tank
Fig. 15.2 Tank bottom
center placement of a single
sensor
In Fig. 15.3, the sensor No. 7 placed in the center of the tank bottom can form six
positioning triangles with the surrounding six sensors, which reduces the attenuation
by nearly half compared with the positioning shown in Fig. 15.1. The traditional
positioning method is to identify the source S through the positioning triangle formed
by sensors 1, 2 and 6. It can be seen from the figure that the acoustic source S is far
away from sensor 6. When the acoustic wave propagates through the medium to the
sensor 6, the amplitude of the wave attenuates greatly, even to zero. After the No. 7
161
Fig. 15.1 Triangle location
net of the tank
Fig. 15.2 Tank bottom
center placement of a single
sensor
In Fig. 15.3, the sensor No. 7 placed in the center of the tank bottom can form six
positioning triangles with the surrounding six sensors, which reduces the attenuation
by nearly half compared with the positioning shown in Fig. 15.1. The traditional
positioning method is to identify the source S through the positioning triangle formed
by sensors 1, 2 and 6. It can be seen from the figure that the acoustic source S is far
away from sensor 6. When the acoustic wave propagates through the medium to the
sensor 6, the amplitude of the wave attenuates greatly, even to zero. After the No. 7