Acoustic attracting method, device, medium and product for Sciaenidae based on otolith resonance

By analyzing the resonance characteristics of the otoliths of Sciaenidae fish, generating and adjusting sound wave signals, the problems of inaccurate feeding and poor environmental adaptability in existing acoustic attractant technology were solved, achieving efficient and stable acoustic attractant effects and improving aquaculture benefits.

CN118370286BActive Publication Date: 2025-09-30JIMEI UNIV
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Patent Information

Application Number
CN202410628340.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-05-21
Publication Date
2025-09-30
Estimated Expiration
2044-05-21

AI Technical Summary

Technical Problem

Existing acoustic attractant technology makes it difficult to accurately feed fish according to the real-time physiological needs and environmental factors in Sciaenidae fish farming, resulting in low feeding efficiency, high costs and a significant impact on the water quality environment. In addition, existing acoustic signals lack the ability to adjust to environmental changes, resulting in unstable attractant effects.

Method used

By performing numerical modal analysis on the otoliths of Sciaenidae fish, an initial preset resonance frequency point group and an orthogonal chirp signal group are generated, and a synthetic acoustic attractant signal is superimposed. The feedback regulation mechanism is used to track the changes in the otolith resonance frequency in real time, and the signal amplitude is dynamically adjusted to match the auditory characteristics of fish, thereby achieving precise acoustic induction.

Benefits of technology

It achieves stable and precise induction of Sciaenidae fish, improves feeding efficiency and economic benefits, reduces bait waste and water pollution risks, and improves the ability to adapt to different environmental changes.

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Abstract

The present invention discloses a method, device, medium and product for acoustic attracting of Sciaenidae based on otolith resonance, and relates to the technical field of acoustic attracting. The method comprises: generating a single-frequency signal group according to an initial preset resonance frequency point group, generating an orthogonal Chirp signal group according to the hearing threshold frequency range of target fish, superimposing the two to synthesize an acoustic attracting signal, calculating a digital signal and a frequency band sound pressure level through the feeding sound and otolith resonance sound of the target fish, calculating an amplitude adjustment coefficient according to the frequency band sound pressure level, replacing the initial preset resonance frequency point group with a measured resonance frequency point group determined by the frequency domain information of the digital signal, regenerating a single-frequency signal group, superimposing the single-frequency signal group with the orthogonal Chirp signal group, using the amplitude adjustment coefficient to adjust the amplitude of the updated acoustic attracting signal after superposition, and transmitting the amplitude-adjusted signal to effectively induce the fish to forage at a designated location, thereby improving the stability of acoustic attracting.
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