Method for positioning micro seismic source or acoustic emission source
A technology of acoustic emission sources and positioning methods, applied in positioning, measuring devices, instruments, etc., can solve problems such as the inability to eliminate the influence of sound velocity deviation, and achieve the effect of avoiding errors
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Embodiment 1
[0032] Such as figure 1 As shown, explain:
[0033] The position of the preset microseismic source / acoustic emission source is (0mm, 0mm), and the coordinates of the three sensors (x 1 ,y 1 ), (x 2 ,y 2 ), (x 3 ,y 3 ), (x 4 ,y 4 ) are (0mm, -10000mm), (8000mm, 0mm), (0mm, 6000mm), (-13000mm, 0mm); the moment when the microseismic source / acoustic emission source is transmitted to the four sensors to trigger the sensor recording is 2020μs, respectively, 2016μs, 2012μs, 2026μs. Take this example to explain the two-dimensional positioning problem in detail. In the actual positioning, the known quantities are the coordinates of the four sensors and the moment when the sensor triggers the recording. The position of the microseismic source / acoustic emission source is unknown. The reason given here is the purpose It is verified by the method proposed in this patent. The specific implementation steps are as follows:
[0034] (1) List the coordinate values of the four senso...
Embodiment 2
[0039] Such as figure 2 As shown, the preset position of a microseismic source / acoustic emission source is (0mm, 0mm, 0mm), and the coordinates of the five sensors (x 1,y 1 ,z 1 ), (x 2 ,y 2 ,z 2 , t 2 ), (x 3 ,y 3 ,z 3 ), (x 4 ,y 4 ,z 4 ) and (x 5 ,y 5 ,z 5 ) are (-80000, 0, 0), (0, 15000, 0), (60000, 0, 0), (0, 45000, 0), (0, 0, 55000), respectively. The five sensors correspond to the triggering time t 1 , t 2 , t 3 , t 4 , t 5 They are 5016μs, 5003μs, 5012μs, 5009μs, 5011μs respectively. Take this example to explain the three-dimensional positioning problem in detail. In the actual positioning, the known quantities are the coordinates of the five sensors and the moment when the sensor triggers the recording. The position of the microseismic source / acoustic emission source is unknown. The reason why it is given here is to Verify by the method proposed in this patent. The specific implementation steps are as follows:
[0040] (1) Arrange five sensors (...
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