Underwater vehicle protection device and method based on depth control

Abstract

The invention belongs to the technical field of underwater vehicle navigation safety protection, and particularly relates to an underwater vehicle protection device and method based on depth control. The device comprises a mechanical depth detection device, an electromagnet, a weight, a power supply circuit and a detection circuit, wherein the mechanical depth detection device and the electromagnet are arranged on a pressure hull of an underwater vehicle and contact with water outside the underwater vehicle, the mechanical depth detection device and the electromagnet are in series connection in the same power supply circuit, the electromagnet attracts the weight when the power supply circuit supplies power, and the power supply circuit is connected with a main control computer of the underwater vehicle through the detection circuit. The method includes that when the water pressure outside the underwater vehicle reaches a trigger water pressure, a normally-closed contact of the mechanical depth detection device is opened, the power supply circuit of the electromagnet is opened, without the attraction of the electromagnet, the weight can detach from the underwater vehicle, and a bigger positive buoyancy and a bigger bow-buoying moment enable the underwater vehicle to float upwards automatically. The underwater vehicle protection device based on the depth detection is simple in structure, reliable in work and independent of a control system of the underwater vehicle, and can effectively protect the safety of the underwater vehicle.

Description

technical field [0001] The invention belongs to the technical field of navigation safety protection of underwater vehicles, in particular to an underwater vehicle protection device and method based on depth control. Background technique [0002] Under normal circumstances, various electronic devices of underwater vehicles are installed in dry pressure chambers, and the strength and sealing performance of the pressure chambers are the basic guarantees for the safety of underwater navigation. When an underwater vehicle performs a task and navigates at a certain depth, the external pressure detected by the pressure sensor is generally converted into the water depth as the control target, so the actual navigation depth largely depends on the sensor data. When the sensor is damaged, or erroneous depth data is detected, or the navigation control system fails, the underwater vehicle may sail at a water depth that exceeds the pressure bearing capacity of the pressure hull, causing d...

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