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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 9. Отображено 9.
15-08-2023 дата публикации

Malicious node identification method and device and storage medium

Номер: CN116599735A
Автор: DU CUIFENG, CHEN SHAOQUAN, CAI LINFENG, ZHANG JINLONG, TIAN JIANWU
Принадлежит:

The invention discloses a malicious node identification method and device and a storage medium, and the method comprises the steps: constructing the approximate trust distribution of a mobile node according to the historical trust distribution of the mobile node in a source trust domain; updating the approximate trust distribution into trust distribution of a target trust domain, and determining a dynamic trust threshold according to the updated trust distribution of the target trust domain; when the trust degree of the mobile node is smaller than the dynamic trust threshold value, identifying the mobile node as a malicious node; according to the method, the malicious nodes in the dynamic environment can be quickly identified, the requirement for accurately identifying the malicious nodes after trust domain crossing is met, and the overall trust quality of the system and the security of the system are improved.

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Номер записи: 1
30-05-2023 дата публикации

Buck circuit steady-current output control method and circuit

Номер: CN116191836A
Автор: XU YACHAO, ZHAI ZHIQIANG, LIU YULONG, ZHANG XIAOGUANG, XI YUE, DU ZHENBIN, SHI JIAN, WANG XUAN, CHE FULAI, LIU TAO, CHANG CHEN, CAI LINFENG, LU MEILIN, ZHAO ZHIQIANG
Принадлежит:

The invention relates to a buck circuit steady-current output control method and circuit, and belongs to the technical field of power electronic power supply control methods and equipment. According to the technical scheme, (1) a current sampling circuit is adopted to carry out equivalent sampling on large current; (2) through a pre-charging link, enabling the charging voltage to be higher than the voltage required by an actual load, setting current and starting; (3) controlling the output current by using a rear-pole MOS (Metal Oxide Semiconductor) tube; and (4) sampling the terminal voltage of the rear-stage MOS tube, detecting the terminal voltage of the rear-stage MOS tube to enable the terminal voltage to be within a certain range, further controlling the duty ratio of the front-stage MOS tube, and enabling the output voltage to be stabilized at the voltage level required by the load. The beneficial effects of the invention are that the output current response is faster, the stability ...

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Номер записи: 2
15-08-2023 дата публикации

Silicon steel sheet magnetostriction two-dimensional measurement system and method

Номер: CN116593948A
Автор: LU MEILIN, ZHANG ZHIGANG, FENG DEYAN, WANG XUAN, LIU LANRONG, DU ZHENBIN, LIU TAO, CHE FULAI, ZHANG JUNJIE, CAI LINFENG, ZHAI ZHIQIANG, LIU YULONG
Принадлежит:

The invention relates to a silicon steel sheet magnetostriction two-dimensional measurement system and method, and belongs to the technical field of electromagnetic measurement of power transformer materials. According to the technical scheme, under different working conditions, a reflector (8) is pasted on a silicon steel sheet, laser measurement is conducted in the rolling direction and the direction perpendicular to the rolling direction, and the magnetostriction amount of the silicon steel sheet in the rolling direction can be analyzed through a magnetostriction measuring instrument; in the vertical rolling direction, collected data is subjected to displacement variation analysis through a laser vibration meter, and variation in one period and data in the rolling direction are compared, analyzed and sorted, so that variation data of the magnetostriction amount of the silicon steel sheet in two directions are obtained. According to the invention, one-dimensional measurement of magnetostriction ...

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Номер записи: 3
25-10-2019 дата публикации

Double-laser horizontal correlation ship superelevation early warning system

Номер: CN0209543550U
Автор: LI YING, CAI LINFENG, XU ZHEFENG
Принадлежит: ZHONGSHAN JUYUN SOFTWARE TECH CO LTD, ZHONGSHAN JUYUN SOFTWARE TECHNOLOGY CO., LTD.

The utility model discloses a ship superelevation early warning system with double laser horizontal correlation. Wherein the monitoring stand columns are installed on the two sides of a riverway, thedisplay device and the alarm device are installed on a bridge, and the control cabinet has a networking communication function. Two laser emitters located on the same horizontal plane are installed onthe monitoring stand column on one side of the riverway. A laser receiver which is horizontally symmetrical to the laser emitter is mounted on the monitoring upright post on the other side of the river channel; if the ultrahigh ship blocks the early-warning laser of the laser emitter in sequence within the specified time, the early-warning system will give an alarm, and due to the fact that the ultrahigh ship blocks the early-warning laser according to the logic sequence, the early-warning system will not trigger the alarm even if the ultrahigh ship blocks the early-warning laser on a riverway or ...

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Номер записи: 4
30-05-2023 дата публикации

Numerical control adjustable method and device for switching power supply

Номер: CN116191877A
Автор: ZHANG XIAOGUANG, WANG XUAN, XU YACHAO, XI YUE, ZHAI ZHIQIANG, LIU YULONG, ZHAO ZHIQIANG, LIU TAO, CHE FULAI, CAI LINFENG, LU MEILIN
Принадлежит:

The invention relates to a numerical control adjustable method and device for a switching power supply, and belongs to the technical field of power electronic methods and equipment. According to the technical scheme, input mains supply obtains direct-current voltage through an auxiliary power supply and a voltage reducing and stabilizing circuit, and the direct-current voltage is supplied to a needed circuit; pWM waves are output from the drive circuit through the single-chip microcomputer, voltage and current data are output through the BUCK circuit, an MOS tube is used in the BUCK circuit to replace a diode, rectification loss is reduced, and the PWM waves are fed back to the single-chip microcomputer through the ADC feedback sampling circuit; voltage and current are controlled and adjusted by keys and are displayed on the liquid crystal screen in real time. The beneficial effects of the invention are that by using the PID algorithm, PWM wave output and overcurrent protection measures ...

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Номер записи: 5
06-06-2023 дата публикации

Rogowski coil current transformer and manufacturing method thereof

Номер: CN116230378A
Автор: ZHANG WEIMING, CAI LINFENG, ZHAI ZHIQIANG, LIU YULONG, CHE FULAI, LU MEILIN, LU SUYIN, GUO SIWEN, LI ZIXUAN
Принадлежит:

The invention relates to a Rogowski coil current transformer and a manufacturing method, and belongs to the technical field of power transformer application equipment and methods. According to the technical scheme, a return turn (3) is embedded in the middle of the upper end face of a framework (1), an enameled wire (2) is wound on the framework (1) to form a wire, the tail end of the enameled wire (2) is connected with the return turn (3) and connected with an integrator (8) through a secondary lead (7), and the integrator (8) comprises a filter circuit and an integrating circuit; the aluminum foil (4) and the bare copper wire (5) are wound on the outer layer of the wire to form a composite shielding layer, and the insulating layer (6) is wound on the outer layer of the composite shielding layer. The invention has the beneficial effects that the aluminum foil and the bare copper wire are continuously wound without breaking, the winding efficiency is improved, the adjustable resistor is ...

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Номер записи: 6
04-07-2023 дата публикации

Dry-type transformer winding loss and temperature rise simulation experiment system and method

Номер: CN116381570A
Автор: WU WEIGE, DU ZHENBIN, CHO EUN-HAN, HAN GUISHENG, LI JIE, CAI LINFENG, LI MAN, REN RUIJIE, LU SUYIN, ZHAI ZHIQIANG, LIU YULONG, FENG ZHICHENG, WANG XUAN, GUO SIWEN, LI ZIXUAN
Принадлежит:

The invention relates to a dry-type transformer winding loss and temperature rise simulation experiment system and method, and belongs to the technical field of power transformer application equipment and methods. According to the technical scheme, an elliptical winding (2) is fixedly placed on a support, a transformer fan (3) is fixed over the elliptical winding (2), a loss measuring device (4) is connected with the elliptical winding (2), a thermocouple is arranged in the elliptical winding (2), a temperature rise measuring device (5) is connected with the thermocouple, and the position of a wind speed measuring device (6) is matched with the position of the elliptical winding (2). The method has the beneficial effects that the method can be carried out in a laboratory, the cost is low, and the research requirements of testing at any time, repeatedly testing and repeatedly verifying can be met.

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Номер записи: 7
09-09-2015 дата публикации

Service running method and device

Номер: CN104901880A
Автор: HE ZHONGRONG, BEI YUCHANG, CAI LINFENG, LI QIZHAN
Принадлежит:

The invention provides a service running method and device. The method comprises the following steps: detecting a link state between a standby router and convergence equipment through a link detection mechanism; and when abnormity of the link state between the standby router and the convergence equipment is detected, linking a redundancy protocol and setting the redundancy state of a standby service router as an initial state, wherein in the initial state, the standby service router does not execute primary-standby switching according to the redundancy protocol. Through adoption of the scheme, the problem that the primary service router and the standby service router in the convergence layer of a V-shaped topological structure are wrongly switched by the redundancy protocol can be solved.

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Номер записи: 8
25-11-2015 дата публикации

Circulative cooling water supply system outside hydroelectric power plant

Номер: CN0204806758U
Автор: CAI LINFENG, YANG JIAN GANG, BI LIANGBAI, PU YONG, LIU GAOQUAN, TANG CHUNLIN, GOU DAJUN, ZHOU YUAN, HE ZHOUYAN, YANG JIAN'GANG
Принадлежит:

The utility model discloses a circulative cooling water supply system outside hydroelectric power plant, include that the generating set cooler still includes circulating water pond, circulating water pump and circulative cooling ware, circulating water pump, circulative cooling ware, generating set cooler and circulating water pond use pipe connection, the inside moisturizing device level sensor that is equipped with of circulating water pond in proper order. The utility model discloses satisfied the quality of water, the water yield, water pressure, the temperature that supply water, and the installation is simple, it is convenient to maintain, has guaranteed the unit safety steady operation, effectively alleviates the intensity of labour of operator on duty.

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Номер записи: 9