Submarine hydrothermal vent high-precision sound wave crossing time measuring system
A time-of-flight, high-precision technology, applied in the field of marine equipment, to achieve the effect of improving accuracy
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[0023] The high-precision acoustic wave flight time measurement system of a seabed hydrothermal vent according to the present invention includes an array plane of an underwater acoustic transducer, an acoustic signal generating module, an automatic sound source switching circuit, and a data acquisition system.
[0024] The underwater acoustic transducer array plane is composed of 16 underwater acoustic transducers, which are installed on a square plane (1.5m×15.m) bracket and evenly distributed in the square plane on each side of the stand. 96 sound wave propagation paths can be formed between the underwater acoustic transducers on each side of the bracket and the underwater acoustic transducers on the other three sides of the bracket.
[0025] The sound wave signal generation module mainly emits sound wave signals from the signal generator. The sound wave signals are frequency sweep signals with a sweep frequency range of 18kHz to 23kHz and a sound pressure level of 69dB.
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