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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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23-04-2014 дата публикации

Real-time monitoring and detecting method for underwater paving quality

Номер: CN103744084A
Автор: LIN QIZHEN, DENG YONG, ZHANG HONG, WU ZHENLEI, WANG BIN, BI WENHUAN, LIN WENJUN, CHENG ZHIHUI, DUAN WENJIE, ZHA WENFU
Принадлежит:

The invention discloses a real-time monitoring and detecting method for underwater paving quality and belongs to the technical field of channel governance and river bed protection. The method comprises the following steps of (1) uniformly arranging concrete blocks on row cloth; (2), mounting and fixing a sonar; (3) enabling the sonar to send a sonar signal to paved upper row cloth and lower row cloth when the upper row cloth is paved; (4) receiving and analyzing a reflected sonar signal and calculating the widths of the upper row cloth and the lower row cloth to further judge whether the overlapping quality meets the design demands or not. The paving quality of various water bodies can be detected, and the unfavorable influence of turbidity or flow speed of the water bodies to the detection is overcome; a diver does not need to dive underwater, detection and paving can be performed at the same time, so the direction of the row cloth can be quickly adjusted, and an unqualified overlapping ...

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Номер записи: 1
16-05-2023 дата публикации

Braille type underwater acoustic marker

Номер: CN116125448A
Автор: TAO HAIFENG, ZHOU BIJUN, WANG BIN, ZHA WENFU, ZHANG WEI, LIU CHANG, CHENG ZHIHUI, YUAN WEI, LIU ZHIMAO, LIU QINYIN, WANG SHENG, PENG ZHICHENG
Принадлежит:

The invention provides a braille type underwater acoustic marker which comprises a marker backing plate, marker fixing frames in different arrangement sequences can be installed on the surface of the marker backing plate, marker panels are installed in the marker fixing frames, the marker fixing frames and the marker panels are square, and the marker fixing frames and the marker panels are square. Under the action of the first mounting holes and the second mounting holes, the marker fixing frames are mounted on the marker backing plate according to a certain arrangement sequence to form a digital information scheme of different marker panels, compared with the prior art, the structure is simple, the recognition effect is good, target position information can be reflected, and the identification accuracy is improved. The method can effectively meet the requirement of underwater construction quality monitoring, and is designed based on the acoustic scene of the detection target, so that the ...

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Номер записи: 2