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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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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 4. Отображено 4.
14-04-2023 дата публикации

Silicon controlled rectifier control system and switching power supply

Номер: CN115967259A
Автор: WEI XUESONG, ZENG TIANXIONG, ZHONG YUCHENG
Принадлежит:

The embodiment of the invention discloses a silicon controlled rectifier control system and a switching power supply. The system comprises a power supply circuit, a zero crossing detection circuit used for detecting a zero crossing point signal of alternating current, a silicon controlled rectifier control circuit used for controlling a load, and an MCU control circuit. The power supply circuit is electrically connected with the zero cross detection circuit, the silicon controlled rectifier control circuit and the MCU control circuit, and is used for converting alternating current into 12V direct current and 5V direct current; the MCU control circuit is electrically connected with the zero crossing detection circuit and the silicon controlled rectifier control circuit and is used for controlling the on-off of the silicon controlled rectifier control circuit according to the zero crossing point signal; the zero-cross detection circuit is provided with a fly-wheel diode corresponding to the ...

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Номер записи: 1
06-06-2023 дата публикации

Underground cable partial discharge fault detection method and device based on actual characteristics of cable

Номер: CN116223989A
Автор: CHEN XIA, CHEN XINGYAO, DENG JUNCHAO, FENG JINTIAN, LI JIANWEN, FENG GUOQUAN, LI WEIJIE, ZHONG YUCHENG, SU YU, SHEN JIXIANG, XU CHUNCHUAN
Принадлежит:

The invention relates to the technical field of discharge detection, and discloses an underground cable partial discharge fault detection method and device based on actual characteristics of a cable. According to the invention, high-frequency characteristic data of the underground cable to be measured are obtained through measurement; constructing a to-be-tested underground cable structure model; calculating the total high-frequency attenuation loss of the cable by using the high-frequency characteristic data according to the model, and calculating a high-frequency attenuation constant according to the calculated value of the total high-frequency attenuation loss; and performing partial discharge analysis on the cable sample with the actual partial discharge position according to the obtained high-frequency attenuation constant calculation value, and adjusting the model based on a comparison result of the obtained partial discharge analysis position and the actual partial discharge position ...

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Номер записи: 2
04-08-2023 дата публикации

Preparation method of modified bioprosthetic valve material

Номер: CN116531568A
Автор: ZHONG YUCHENG
Принадлежит:

The invention discloses a preparation method of a modified bioprosthetic valve material, which comprises the following steps: mixing manganese dioxide and zinc oxide according to a mass ratio of 1: (0.5-1), carrying out high-temperature calcination, grinding into nanoparticles, putting the obtained nanoparticles into toluene cyclohexanone, and carrying out ultrasonic dispersion for 30 minutes, thereby obtaining the modified bioprosthetic valve material. Then adding a modifier, carrying out heat treatment at 60-80 DEG C for 1-3 hours, filtering the solution through a membrane after the reaction is finished, and uniformly stirring the obtained solution and an anti-calcification agent to obtain a mixed solution; soaking the bioprosthetic valve material in the mixed solution for 24 hours, taking out the bioprosthetic valve material, and washing the bioprosthetic valve material with an inorganic solvent. The preparation method of the bioprosthetic valve material is simple and mild in condition ...

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Номер записи: 3
16-05-2023 дата публикации

Injection molding process and device for electronic automobile instrument panel

Номер: CN116118095A
Автор: SUN JINYAN, ZHU LINGKE, JIANG JIANQING, DING LINGJUAN, ZHONG YUCHENG
Принадлежит:

The invention relates to the field of automobile instrument panel injection molding, in particular to an electronic automobile instrument panel injection molding process and a device thereof.The electronic automobile instrument panel injection molding process comprises a bottom plate, a supporting table is placed in the middle of the upper surface of the bottom plate, and a fixing device is fixedly installed in the middle of the upper surface of the supporting table. According to the automobile dashboard trimming device, the automobile dashboards can be conveniently fixed in batches, the automobile dashboards can be conveniently fixed in batches by arranging the containing barrel, the extrusion blocks can be moved by arranging the driving rod, the automobile dashboards are separated when the extrusion blocks move, and therefore the automobile dashboards can be conveniently fixed. According to the automobile instrument panel cutting device, the automobile instrument panels are cut in batches ...

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Номер записи: 4