Piezoelectric patch type detectoscope for deepwater soundwave detection

Abstract

The invention discloses a piezoelectric patch type detectoscope for deepwater soundwave detection. The detectoscope is characterized in that the length of an air cavity of an anti-pressure medium soundwave resonant cavity is half the soundwave operation wavelength lambda; a piezoelectric electric transducer is installed at one end of the anti-pressure medium soundwave resonant cavity; and a piezoelectric ceramic patch of the piezoelectric electric transducer attaches to the inner end face of the air cavity in the anti-pressure medium soundwave resonant cavity. The detectoscope can still realize detection of the soundwave signals even under high pressure in deepwater and, with such a simple structure, can not only maintain the high detection sensitivity of the traditional piezoelectric electric transducers but also overcome the defect that the traditional piezoelectric electric transducers can not detect the soundwaves in water. The equipment is simple in design, has small volume and low cost and is convenient to use. The detectoscope can be widely applied to deepwater pipelines, oil wells, deep sea and other soundwave detection systems under high pressure.

Description

technical field [0001] The invention relates to an underwater sounder, in particular to a piezoelectric sheet type underwater sounder for sound wave detection in deep water. Background technique [0002] With the development of human society, wireless communication technology plays an increasingly important role in our life. The traditional electromagnetic wave wireless communication is very familiar to everyone. For example, mobile phones used in daily life and radio stations widely used in the military all transmit information through electromagnetic waves. However, in some cases, wireless communication of electromagnetic waves is not necessarily the best communication method, such as wireless communication in deep water. [0003] Underwater communication is very difficult due to the attenuation effect of seawater on electromagnetic waves. So, can you use sound waves to transmit information? For several years, scientists from various countries have been committed to the...

AI Technical Summary

Problems solved by technology

First of all, the sound waves will also gradually weaken during the transmission process, making the signal weaker

At the same time, since water is an excellent transmission medium for sound, all kinds of sound waves can be transmitted for hundreds of thousands of kilometers, making it difficult for people to distinguish the sound waves carrying data from the usual background noise

At present, there is no perfect acoustic wave detection instrument in underwater communication, which can work normally, stably, and with high sensitivity under the condition of ultra-high pressure at a depth of thousands of meters.

Although traditional hydrophones can work underwater to detect underwater sound waves and have high sensitivity, traditional hydrophones mostly work in shallow water areas within 500 meters. Under high-pressure conditions in deep water, even after passing through With special design, its sensitivity will also deteriorate to a large extent, and its pressure-bearing structure is also difficult to work stably for a long time

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