Active protection method of unmanned underwater vehicle based on sealing property detection of sealed cabin

Abstract

The invention belongs to the field of safety protection of an unmanned underwater vehicle, and relates to an active protection method of the unmanned underwater vehicle based on sealing property detection of a sealed cabin. The active protection method comprises the following steps of: after the sealing work of the sealed cabin is completed, collecting the data of a temperature sensor and a pressure sensor in real time; performing compensation and correction so as to obtain the temperature and the pressure of gas; obtaining a variation quantity Delta V of an ideal gas volume by an ideal gas state equation; and if the Delta V is greater than a given threshold V<set>, sending an alarm signal, and energizing a ballast rejection device. The active protection method disclosed by the invention has high reliability, and a condition of false alarm due to dampness of a detection device in a conventional commonly used manner that a humidity sensitive resistor is used as the sensor is avoided; the adaptive compensation of the temperature sensor is performed, so that a loss caused by temperature hysteresis of the temperature sensor is avoided; and due to the arrangement of the load rejection device, a ballast can be rejected actively when the sealing property is abnormal, so that the unmanned underwater vehicle can float rapidly, the response speed is high, equipment in the sealed cabin can be furthest protected, and the safety of the unmanned underwater vehicle is guaranteed.

Description

technical field [0001] The invention belongs to the field of safety protection of underwater unmanned aerial vehicles, and relates to an active protection method for underwater unmanned aerial vehicles based on the sealing performance detection of a sealed cabin. Background technique [0002] Unmanned Underwater Vehicle (UUV) plays an important role in marine operations, civil search and rescue, military missions and other fields. However, the electronic circuits and instrumentation equipment in UUV are not waterproof and need to be installed in a sealed cabin to ensure the safety of the equipment. In order to ensure the normal operation of the underwater vehicle, it is necessary to monitor the sealing performance of the sealed cabin in real time. When the sealed cabin leaks, the UUV should be floated as soon as possible to avoid further losses. [0003] When UUV is navigating in deep water, due to design and installation defects, water leakage in the sealed cabin occurs fr...

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Problems solved by technology

[0008] The Chinese patent titled "A Water Leakage Detection Device for an Underwater Pressure Chamber" with the patent application number 201210461350.9 mentions a water leakage detection device with a simple structure and easy installation, but when the temperature drops and the gas in the cabin liquefies, Sensors are prone to false alarms;

[0009] The Chinese patent titled "A Remote Detection Device for Water Leakage in Deep-sea Pressure Chambers" and the patent application number 201010147912.3 mentioned a device for remote real-time detection of water leakage in deep-sea pressure chambers. The ballast is connected to the detection circuit on the ship through cables, which is not suitable for UUV and has limited application range

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