Dual-shell series connection IV type flextensional transducer
A flextension transducer and flextension technology, applied in the field of acoustic sensors, can solve the problems of increased detection power, small size, and high power, and achieve the effects of firm structure, widened working bandwidth, and reduced resonance frequency
Active Publication Date: 2016-06-22
INST OF ACOUSTICS CHINESE ACAD OF SCI
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Problems solved by technology
[0006] The purpose of the present invention is to overcome the problem of increasing the detection power by increasing the number of transducers in the current application of Type IV flexural transducers, and to provide a Type IV flexural transducer with small size and high power. device
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[0033] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments.
[0034] Such as figure 1 As shown, the present invention provides a type IV flextensional transducer with double shells connected in series. The flextensional transducer includes: a first flextensional shell 1, a second flextensional shell 2, two intermediate connections 3, Two sets of piezoelectric drive units 4, outer beams 5, and middle beams 6; the two intermediate connections 3 connect the first flextensile shell 1 and the second flextensile shell 2 in series to form an integral shell; the two sets of piezoelectric The drive unit 4 runs through the middle of the integral shell in parallel; the outer beam 5 connects the two intermediate joints 3 up and down, and is used to limit the bending of the outer edge of the joint between the first flexural shell 1 and the second flexural shell 2 Vibration; the intermediate beam 6 is used to further fix th...
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The present invention provides a dual-shell series connection IV type flextensional transducer which comprises a first flextensional shell (1), a second flextensional shell (2), two intermediate connection parts (3), two groups of piezoelectric driving units (4), a lateral beam (5), and an intermediate beam (6). The intermediate connection parts (3) allow the first flextensional shell (1) and the second flextensional shell (2) to be connected in series to be an integrated shell. The two groups of piezoelectric driving units (4) go through the middle of the integrated shell parallelly. The lateral beam (5) allows the two intermediate connection parts (3) to be vertically connected and is used for limiting the bending vibration of the connection part outer edge of the first flextensional shell (1) and the second flextensional shell (2). The intermediate beam (6) is used for further fixing the intermediate connection parts (3). The dual-shell series connection IV type flextensional transducer has the advantages of small size and large power.
Description
technical field [0001] The invention relates to the field of acoustic sensors, in particular to a type IV flexural transducer with double shells connected in series. Background technique [0002] Acoustic waves are the only information carrier that can travel long distances in water, and underwater acoustic transducers are widely used in civilian or military ships, submersibles and other equipment. The lower the sound frequency, the smaller the loss when it propagates in water, and the farther it can propagate. Therefore, low-frequency transducers have important application value in the fields of marine fishery development, marine resource exploration, and long-distance underwater target detection. Common low-frequency transducers mainly include moving coil transducers, Helmholtz resonators, bending transducers, and flextensional transducers. [0003] The flextensional transducer has a development history of nearly a hundred years. The earliest known record is an eggshell f...
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IPC IPC(8): G10K9/122
Inventor 李志强莫喜平
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI