A digital underwater acoustic transducer unit, array and device and a control method
A technology of underwater acoustic transducers and unit arrays, applied in the field of devices and controls, digital underwater acoustic transducer units, and arrays, can solve the problems that cannot be applied in the field of underwater acoustics and have large differences, and achieve the improvement of low-frequency acoustic radiation ability, avoid easy damage, and reduce volume
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Embodiment 1
[0059] see figure 1 with figure 2 , a digital underwater acoustic transducer unit, comprising an outer wall 1, two piston radiation surfaces 2, two permanent magnets 3 and an electromagnet 4 composed of an iron core 41 and a coil 42; both ends of the outer wall 1 are provided with There is a sealing film 5, which completely isolates the inside and outside of the transducer unit 10. Each of the piston radiation surfaces 2 is fixed on the inner surface of the sealing film 5 and arranged in one-to-one correspondence. The two are fixed by bonding or vulcanization. The piston radiating surface 2 is fixed on the outer wall 1 through an elastic member 6. Under the constraint of the elastic member 6, the piston radiating surface 2 can move in the axial direction, and the two piston radiating surfaces 2 pass through a The connecting rod 7 is connected and fixed, and the rigid connecting rod effect is better for the connecting rod 7, and the two piston radiation surfaces 2 can only vi...
Embodiment 2
[0068] see image 3 with Figure 4 A digital low-frequency broadband underwater acoustic transducer unit array, the transducer unit array 20 is composed of a plurality of transducer units 10 arranged horizontally. The number of transducer units 10 is determined by the number of bits of the digital sampling signal to be converted. Take the number of transducer units 10 as 2 M As an example (the said M is a positive integer), the conversion of M-digit digital sampling signals to physical sound signals can be realized. Each of the transducer units is independent of each other. Generally, each of the transducer units 10 is connected to a power amplifier (not shown) in a one-to-one correspondence, and the input interface of each of the transducer units 10 is connected to its Corresponding to the power amplifier, the power amplifier controls the current on and off of the transducer unit 10 and the direction of the current according to the received control signal.
[0069] The wo...
Embodiment 3
[0073] see Figure 5 , a digital low-frequency broadband underwater acoustic transducer device, comprising a transducer unit array 20, a cavity 23 and an airbag 24, the transducer unit array 20 is composed of the transducer unit (10 ) composition; the cavity 23 offers a hole, the transducer unit array 20 is arranged at the hole and is airtightly combined with the hole, and the wall of the cavity 23 is also provided with a water-permeable hole 26; the airbag The opening of 24 is tightly combined with the back side of the transducer unit array 20 to form a closed air cavity, the air bag 24 is placed in the cavity 23 , and the air bag 24 is also provided with an inflation hole 27 . The inflation hole 27 can generally be fixed on the outer wall of the cavity 23 to facilitate inflation.
[0074] When the transducer device is placed underwater, the cavity 23 is filled with liquid and communicates with the surrounding waters through the permeable hole 26, and air is stored in the ai...
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