Calibration system and method for magnetic compass of underwater unmanned vehicle

Abstract

The invention discloses a calibration system and method for a magnetic compass of an underwater unmanned vehicle. The calibration system for the magnetic compass of the underwater unmanned vehicle mainly comprises a wireless transmitter-receiver and an external calibration device. The calibration method for the magnetic compass of the underwater unmanned vehicle comprises the following steps thatthe wireless transmitter-receiver transmits the preset magnetic field information of the magnetic compass to the external calibration device; the external calibration device receives the preset magnetic field information of the magnetic compass, processing the preset magnetic field information to generate calibration data and returns the calibration data to the wireless transmitter-receiver; and the wireless transmitter-receiver transmits the received calibration data to the magnetic compass to complete wireless calibration of the magnetic compass. The calibration system and method of the invention make the calibration operation more convenient and faster, and improve the safety performance of the underwater unmanned vehicle.

Description

technical field [0001] The invention relates to the technical field of underwater vehicles, in particular to a magnetic compass calibration system and calibration method for an underwater unmanned vehicle. Background technique [0002] In recent years, underwater unmanned aerial vehicles have been widely used in deep sea reconnaissance, ocean detection, and collection of meteorological data. The magnetic compass is an important part of the navigation system of the underwater unmanned vehicle, and the accuracy of its output information will directly affect the navigation performance of the underwater unmanned vehicle. Therefore, the calibration of the magnetic compass has always been the A preparatory work that must be carried out before entering the water. [0003] In related technologies, there are generally two methods for calibrating the magnetic compass of the underwater unmanned vehicle: one requires disassembling the underwater unmanned vehicle, and directly connectin...

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Problems solved by technology

[0004] The calibration method of connecting the communication cable directly to the magnetic compass needs to disassemble the underwater unmanned vehicle every time it is calibrated, which is extremely inconvenient to operate, and the repeated disassembly and assembly of the underwater unmanned vehicle will also reduce its performance. Reliability; especially when working at sea, the air humidity increases significantly. It is not only inconvenient to disassemble the sections on board, but also exposes the internal electronic components to the humid air, causing great damage. security risks

[0005] Compared with the calibration method of directly connecting the communication cable to the magnetic compass, the calibration method of designing the calibration interface outside the underwater vehicle shell can avoid the safety hazard caused by the disassembly, but this method needs to be considered in the design The reliability series problem caused by the opening on the aircraft shell, and the problem of designing the sealing end cover outside the calibration interface need to be considered. The quality of the design and processing of the sealing end cover directly affects the safety performance of the underwater unmanned vehicle. At the same time, frequent Disassembly and assembly of the sealing end cover will also reduce its service life, and this calibration method still needs to be connected through a cable to complete the calibration work, and there is also the problem of inconvenient operation during calibration

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