The invention belongs to the field of marine environment detection equipment, and particularly relates to a real-time transmission multivariate vector hydrophone array subsurface buoy system which acquires and stores marine environment noise of different depths. The real-time transmission multivariate vector hydrophone array subsurface buoy system comprises a vector hydrophone array, a watertight electronic storehouse, a communication cable, a buoy, an acoustic releaser and an anchor block. The vector hydrophone array is vertically arranged, the tail part is in the free state and the number of the array elements is freely adjusted according to the depth. The vector hydrophone array can simultaneously measure the marine environment information of different depths. As for the real-time performance, the acquired data can be uploaded to a shore station in real time to be processed with no requirement for waiting for recycling equipment to perform data recycling processing.

Real-time transmission multivariate vector hydrophone array subsurface buoy system

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.

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

The invention discloses a submerged buoy type acoustic signal acquisition and storage system which comprises an underwater acoustic transducer (1), an underwater electronic cabin (2), an acoustic signal acquisition and storage circuit (3) and a power supply (4). The underwater acoustic transducer (1) is connected with the underwater electronic cabin (2), the acoustic signal acquisition and storage circuit (3) and the power supply (4) are arranged in the underwater electronic cabin (2), the underwater acoustic transducer (1) outputs signals to the acoustic signal acquisition and storage circuit (3), the acoustic signal acquisition and storage circuit (3) is connected with a personal computer, and the power supply (4) supplies power to the underwater acoustic transducer (1) and the acoustic signal acquisition and storage circuit (3). The submerged buoy type acoustic signal acquisition and storage system has the advantages of being easy to operate, reliable in performance and large in data storage size.

Submerged buoy type acoustic signal acquisition and storage system

The invention discloses an intelligent hydrophone with a self-calibration function. The intelligent hydrophone is used for solving the technical problems of low measurement precision and small dynamic range of the existing underwater acoustic measurement system. According to the technical scheme, the intelligent hydrophone comprises a pre-filter amplifier, a 24bit A/D converter, a digital signal processor, a data recording storage device and a data communication interface. The hydrophone converts a received sound pressure signal into an analog voltage signal, and sends the analog voltage signal to the pre-filter amplifier. After filter amplifier is carried out, the analog voltage signal is converted into a digital signal through the 24bit A/D converter. The digital signal processor provides a time sequence required by acquiring for the 24bit A/D converter, at the same time the digital signal acquired by the 24bit A/D converter is stored in the data recording storage device, or is transmitted to a computer through the data communication interface. Due to the fact that the hydrophone and digital units are integrated into a whole body, the measurement accuracy is improved from no more than +/-1.5dB of a background technology to +/-0.5dB, and the measurement dynamic range is improved.

Intelligent hydrophone with self-calibration function

The invention relates to a time recording and clock synchronizing method and device for oceanographic instruments. The time recording and clock synchronizing device for the oceanographic instruments comprises a GPS antenna, a time recording and clock synchronizing device body, a power supply, an upper PC and a trigger device, wherein the GPS antenna is connected with the time recording and clock synchronizing device body, the power supply and the trigger device are connected to the time recording and clock synchronizing device body, and the time recording and clock synchronizing device body is connected to the upper PC. The time recording and clock synchronizing method and device for the oceanographic instruments have the advantages of being high in integration level, high in antijamming capability, high in reliability, capable of achieving the backup function, and the like. The time recording and clock synchronizing method and device for the oceanographic instruments is suitable for time calibration and clock synchronization of the multiple oceanographic instruments.

Time recording and clock synchronizing method and device for oceanographic instruments

The invention relates to an underwater sound array system without cable connection in deepwater and a synchronous acquisition method The synchronous acquisition method is used for long-term synchronous data acquisition for array elements of underwater sound array in the deepwater The method comprises a synchronization method and a data acquisition recording method The synchronization method comprises the steps of: 101) timing the array elements; and 102) keeping the time continuously by high-precision clock sources contained inside the array elements, thereby realizing long-term accurate synchronization among the array elements The step 101) can adopt PPS signals provided by a GPS system or a Beidou system to accomplish timing The clock source can adopt a miniature CPT atomic clock According to the invention, a strategy for carrying out synchronization by adopting synchronization signal wires in a cable in the prior art is omitted among the array elements, and a mode of cooperating timing with time keeping is adopted to realize synchronization of the array elements In addition, introduction of the synchronization mode enables the array elements to be arranged flexibly and can integrate functions of data acquisition and recording

Underwater sound array system without cable connection in deepwater and synchronous acquisition method

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Underwater sound array system without cable connection in deepwater and synchronous acquisition method