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Calibration system of ship hydrophone

A hydrophone and ship technology, applied to vibration measurement in instruments and fluids, measuring vibration and other directions, can solve problems such as difficulty in ensuring the reliability and accuracy of data collected by hydrophones, and inability to measure and calibrate hydrophones.

Pending Publication Date: 2019-09-13
NO 719 RES INST CHINA SHIPBUILDING IND
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Problems solved by technology

[0005] In view of the problems existing in the prior art, the embodiment of the invention provides a calibration system for ship noise sensors, which is used to solve the problem that the prior art cannot conveniently and quickly measure and calibrate hydrophones that are fixedly installed on ships and are difficult to disassemble, resulting in Difficult to ensure the reliability and accuracy of the data collected by the hydrophone technical problems

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Embodiment Construction

[0026] In order to solve the technical problem that the existing technology cannot conveniently and quickly measure and calibrate hydrophones that are fixedly installed on ships and are difficult to disassemble, which makes it difficult to ensure the reliability and accuracy of data collected by hydrophones, the present invention provides a A calibration system for a ship's hydrophone, the system comprising: a controller, connected to the input end of a power amplifier through a signal line, and used to send an excitation signal at a calibration frequency to the power amplifier; a power amplifier, the power amplifier The output terminal of the transducer is connected with the transducer for amplifying the excitation signal; the transducer, which is placed underwater, is used to convert the excitation signal into an acoustic signal; the calibrated hydrophone , installed on the ship structure, used to receive the acoustic signal, generate a first voltage response value according ...

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Abstract

The invention provides a calibration system of a ship hydrophone. The calibration system comprises a controller, a power amplifier, a transducer, a calibrated hydrophone, a standard wireless hydrophone, and a monitor, wherein the controller is connected with an input end of the power amplifier through a signal line and is used for sending an excitation signal under calibration frequency to the power amplifier, an output end of the power amplifier is connected with the transducer and the power amplifier is used for amplifying the excitation signal, the transducer is underwater and is used for converting the excitation signal into an acoustic signal, the calibrated hydrophone is installed on a ship structure, generates a first voltage response value according to the acoustic signal, and sends the first voltage response value to the monitor, the standard wireless hydrophone generates a second voltage response value according to the acoustic signal, and sends the second voltage response value to the controller through wireless transmission, an input end of the monitor is connected with the calibrated hydrophone and the controller separately, and the monitor is used for receiving the first voltage response value sent by the controller and calibrating a calibration factor of the calibrated hydrophone according to the first voltage response value and the second voltage response value.

Description

technical field [0001] The invention relates to the technical field of measurement and calibration, in particular to a calibration system for a ship's hydrophone. Background technique [0002] In many fields, as an important monitoring device, instruments play an important role in characterizing the performance status and fault status of the monitored products. Therefore, when the instrument is working online, there are clear requirements for the accuracy of value collection. Usually, a metering cycle is specified for each meter, and the metering cycle is generally required to be one year. [0003] For the instruments used in the laboratory or portable instruments, the measurement and calibration is relatively convenient, but for the measurement and calibration of the instruments fixedly installed on the ship, it needs to be disassembled, sent for inspection, and reinstalled. trouble. Especially for instruments that require airtightness, instruments that are inconvenient ...

Claims

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Application Information

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IPC IPC(8): G01H3/00
CPCG01H3/005
Inventor 刘记心寇琼月章婷
Owner NO 719 RES INST CHINA SHIPBUILDING IND
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