Underwater acoustic emission transducer and making method thereof

Abstract

The invention provides an underwater acoustic emission transducer and a making method thereof. The underwater acoustic emission transducer comprises an acoustic transmission main body (2), an emission-used piezoelectric element (3), a receiving-used piezoelectric element (8) and an anti-sound baffle (7), wherein the emission-used piezoelectric element (3) and the receiving-used piezoelectric element (8) are arranged in the acoustic transmission main body (2); and the receiving-used piezoelectric element (8) is configured to receive underwater acoustic signals emitted by the emission-used piezoelectric element (3). The problem that the working state of the emission transducer can not be judged during a use process can be effectively solved, and in application, the working condition of the emission transducer can be detected or recorded in real time.

Description

technical field [0001] The invention relates to the technical field of underwater acoustic equipment, in particular to an underwater acoustic transmitting transducer and a manufacturing method thereof. Background technique [0002] The underwater acoustic transmitting transducer is generally composed of a metal support frame, an insulating gasket, an anti-acoustic baffle, a piezoelectric element, a shielded cable, and a sound-transmitting rubber to complete the conversion of the signal to the sound. [0003] Since the transmitting transducer is generally arranged outside the product and directly connected to the water, without the protection of a high-hardness shell, it is vulnerable to damage to the piezoelectric element caused by impact. In addition, the transmitting transducer usually works in a high-voltage state, and the continuous operation is also likely to reduce the service life of the piezoelectric element and cause damage or performance degradation. Once the tran...

AI Technical Summary

Problems solved by technology

The method of human ear recognition can distinguish whether the transducer is completely damaged (no sound output at all or the output sound is significantly reduced), but it is impossible to identify whether the performance of the transducer is degraded

The detection by means of acoustic docking with the receiving transducer for debugging is firstly complicated to implement, and corresponding debugging equipment must be equipped. Secondly, due to the size of the acoustic docking contact surface and the tightness of the docking ground, it is difficult to maintain the same, and it is still impossible to accurately distinguish the replacement. Is the performance of the energy device degraded?

[0005] In addition, sometimes the transducer is damaged or its performance is degraded during use, which is generally undetectable

Although it can be detected that the transducer has been damaged after use, the specific time of damage and the working state of the damage cannot be determined

This brings great inconvenience to the analysis and interpretation of the data after use

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