Self-contained underwater sound and hydrological data synchronous acquisition device, system and method

Abstract

The invention relates to a self-contained underwater sound and hydrological data synchronous acquisition device, system and method. The device includes a first data acquisition module, a second data acquisition module, a control module and a memory module; the first data acquisition module is used for collecting first underwater sound data, converts the first underwater sound data to second underwater sound data and sends to the control module; the second data acquisition module is used for collecting first hydrological data, converts the first hydrological data to second hydrological data and sends to the control module; the control module is used for controlling the first data acquisition module and the second data acquisition module, and sending the second underwater sound data and the second hydrological data to the memory module; and the memory module is used for storing the second underwater sound data and the second hydrological data, so that a main control computer reads the second underwater sound data and the second hydrological data. The device, the system and the method provided by the invention can synchronously obtain underwater sound signals distributed at different depths in a deepwater large-scale range and hydrologicalal environment parameters under deep sea conditions.

Description

technical field [0001] The present application relates to the technical field of marine environmental information monitoring, in particular to a self-contained underwater acoustic and hydrological data synchronous acquisition device, system and method. Background technique [0002] The expansion of ocean acoustics and its technology from the shallow sea to the deep sea is a major demand for understanding, utilizing and developing the deep sea, and is an important field that meets the needs of the national ocean development strategy. The hydrological environment parameters in the deep sea vary significantly in time and space, and the hydrological phenomena are extremely complex, resulting in complex and changeable sound field distribution and space-time coherence structure, which in turn affects the performance of acoustic information transmission and underwater target detection. Therefore, it is necessary to add environmental parameters to carry out deep-sea acoustic researc...

AI Technical Summary

Problems solved by technology

[0004] 1. Non-co-point and asynchronous acquisition of underwater acoustics and hydrological parameters: traditional hydrophone arrays and hydrological environment parameter acquisition chains are independent systems with independent clocks, making it difficult to achieve simultaneous observation of underwater acoustics and hydrological environmental parameters at the same depth

[0005] 2. Inconvenient operation: deep-water arrays are large in size, difficult to deploy and recover at sea, inconvenient to store and transport, and the intervals between array elements are fixed, making it difficult to optimally receive vertical space distribution

[0006] 3. Low signal quality: The long-distance power supply cable will inevitably lead to an increase in the voltage drop of the power supply, resulting in a decrease in the dynamic range of the remote hydrophone, and the long-distance signal transmission cable will increase the attenuation of the underwater acoustic signal, and the long-distance cable The distributed capacitance increases, and the quality of the underwater acoustic signal decreases

[0007] 4. Low reliability: The deep-water hydrophone array contains multi-core power supply cables and signal transmission cables. For deep-water high-hydrostatic pressure environments, the cable length is large and the probability of damage is high, and cable damage in high-voltage environments will quickly lead to the complete failure of the entire array. Damaged, very difficult to repair

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