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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.
16-11-2011 дата публикации

FPGA (Field Programmable Gate Array)-based method for realizing multi-path I2C (Inter-Integrated Circuit) bus port expansion

Номер: CN0102243619A
Автор: DONGFENG WANG, LIN YANG, LI ZHU, WEIFENG CHEN, RUI ZHANG, RUIJIE QIAN, TIANJING ZHANG, WANG DONGFENG, YANG LIN, ZHU LI, CHEN WEIFENG, ZHANG RUI, QIAN RUIJIE, ZHANG TIANJING
Принадлежит:

The invention relates to an FPGA (Field Programmable Gate Array)-based method for realizing multi-path I2C (Inter-Integrated Circuit) bus port expansion. The FPGA-based method is used for the communication between master equipment and slave equipment of a communication system, and a master control MCU (Micro Control Unit) of the master equipment is connected with one FPGA through a high-speed parallel port so as to form an FPGA interior circuit through programming, wherein the FPGA interior circuit comprises an MCU interface module and a multi-path I2C interface module. The I2C port formed by FPGA expansion completely accords with an I2C bus protocol; and by applying the method for communication port expansion in the invention to the master equipment in the I2C bus communication system, the speed of communication between the master equipment and the salve equipment or slave devices can be greatly increased.

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Номер записи: 1
25-03-2015 дата публикации

Module circuit for compressing dynamic range of radio-frequency signals

Номер: CN104467718A
Автор: SUN YI, WANG WEILONG, ZHANG RUI, QIAN RUIJIE, ZHANG XIAOFENG, YANG CHUNPU, LI YANG
Принадлежит:

The invention relates to a radio-frequency communication device, in particular to a module circuit for compressing the dynamic range of radio-frequency signals. The module circuit comprises two directional couplers which are the first directional coupler and the second directional coupler. The module circuit further comprises a phase shifter, a detector circuit, a gain adjustment circuit, a phase inverter, a power synthesis circuit and an amplifier. The first directional coupler is connected with the input end of the module circuit and also connected with the phase shifter and the gain adjustment circuit. The phase shifter is connected with the second directional coupler which is connected with the detector circuit. The detector circuit is connected with the gain adjustment circuit which is connected with the phase inverter. The phase inverter and the second directional coupler are both connected with the power synthesis circuit which is connected with the amplifier. The module circuit ...

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Номер записи: 2
25-03-2015 дата публикации

Method for obtaining crossing system of radio-frequency switching matrix

Номер: CN104468416A
Автор: WANG DONGFENG, LI YANG, ZHANG RUI, WANG WENBO, YANG CHUNPU, LIU JIA, WANG WEILONG, QIAN RUIJIE, SUN YI, CHEN WEIFENG, SONG CHUNYING, HAN ZHE, CHENG YE
Принадлежит:

The invention relates to a method for obtaining a crossing system of a radio-frequency switching matrix. The modular design is adopted for the system, a single-stage M*N radio-frequency switching matrix is converted into a two-stage switching network according to the packet switching idea, both the smallest module design difficulty and the number of wires on a backboard are considered, the required network is designed flexibly, an A*N radio-frequency switching matrix module is made into a card insertion module for input units of A input channels, switches for (M/A)*1 are made into card insertion modules for output units of a single-output channel, signals, obtained after switching, of the input units are transmitted to an output board through the wires on the backboard, a switch of the output board is switched to the corresponding channel to enable the signals to be output, the M*N radio-frequency switching matrix is formed by (M/A) input board cards, N output board cards, and the backboard ...

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Номер записи: 3
28-01-2015 дата публикации

Small driving circuit of continuous light output laser device

Номер: CN104319622A
Автор: YANG XIAOBO, WANG WEILONG, ZHANG RUI, CHEN WEIFENG, SUN JING, ZHANG XIAOFENG, QIAN RUIJIE, YANG CHUNPU, WANG DONGFENG, WANG WENBO, LI YANG, WANG YAO
Принадлежит:

The invention relates to a small driving circuit of a continuous light output laser device. The small driving circuit of the continuous light output laser device comprises an automatic power control circuit and an automatic temperature control circuit. The automatic power control circuit is composed of an ADN2830 chip, a fourth pin of the ADN2830 chip is connected with a backlight detection diode of the laser device, and current output of a twenty-eighth pin and a thirty-first pin is adjusted through the ADN2830 chip according to voltage changes of the fourth pin to form closed-loop control, so that the purpose of stable output power of the laser device is achieved. The automatic temperature control circuit is composed of an ADN8830 chip, a working parameter detection circuit is composed of an operational amplifier TLV2374, the output of a twenty-fourth pin of the ADN2830 chip is the LD bias current detection output of the laser device, is connected with a resistor R4 for converting current ...

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Номер записи: 4
01-07-2015 дата публикации

Lampwick assembly for automatic smoke point tester

Номер: CN104749316A
Автор: ZHANG YUE, ZHAO DONGSHENG, LI LIUBIN, ZHOU XIANWEN, YUAN NING, QIAN RUIJIE, XU KEJIANG, MENG XIANXIN, ZHAO JUN, YANG HONGJIE, LIU FANGLIANG, WANG DINGJIN, ZHAO HUAJIANG, KONG DEMING
Принадлежит:

The invention discloses a lampwick assembly for an automatic smoke point tester. The lampwick assembly comprises a lampwick tube and a lampwick nut, wherein the lampwick tube comprises a tube cavity and a tube wall, the tube wall comprises a tube wall main body, and a clamping part is formed on the tube wall body by integral upward extending and packing formation; a clamping shoulder is formed at the junction of the tube wall main body and the clamping part; a limiting clamping slot is formed in the clamping part, the lampwick tube and the lampwick nut are in clearance fit, and the lampwick tube is clamped on the lampwick nut through the limiting clamping slot in the clamping part; a first groove and a second groove for placing sealing rings are formed in the inner wall of the lampwick nut by depressing inwards, and a groove is concavely formed in the middle of the outer wall of the lampwick nut. By adopting the lampwick assembly disclosed by the invention, an originally fixedly connected ...

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Номер записи: 5
30-10-2020 дата публикации

Tunnel entity detection auxiliary device

Номер: CN0211825856U
Автор: GUO XIANGWU, DAI YICHAO, XIAO ZHONGHONG, HE XINGLONG, DENG CHENGHONG, XIA FABAO, WU ZHIMENG, WANG ZHIYONG, WANG YINZHI, LI YONGSHAN, CHEN WEI, GONG SIKUN, LI BIAO, HU XUELONG, YANG XUANZE, DUAN YONGJIN, XIONG TIAN, QIAN RUIJIE, LIU WEI, LI MIN, XUE LIAN
Принадлежит: KUNMING RAILWAY CONSTR COMPANY OF CHINA RAILWAY NO 8 ENG GROUP CO LTD, CHINA RAILWAY NO 8 ENG GROUP CO LTD, KUNMING RAILWAY CONSTRUCTION COMPANY OF CHINA RAILWAY NO.8 ENGINEERING GROUP CO., LTD., CHINA RAILWAY NO.8 ENGINEERING GROUP CO., LTD.

The utility model relates to the field of engineering construction, aims at solving the problem that an existing tunnel lining self-checking device is inconvenient to use or high in cost, and providesa tunnel entity detection auxiliary device which comprises a supporting rod and an auxiliary frame body. The auxiliary frame body comprises a rectangular foundation steel plate, angle steel pieces are connected to the back face of the foundation steel plate, and the angle steel pieces and the foundation steel plate jointly define a containing space. At least two movable supporting points locatedat different positions of the front face are arranged on the front face of the foundation steel plate and comprise pipe bases and rotating pieces. The pipe seat comprises two pipe fittings; the rotating piece is a T-shaped rod formed by connecting rod pieces, the two ends of the transverse edge of the rotating piece are rotationally matched in the pipe holes of the two pipe pieces respectively, one end ...

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Номер записи: 6
18-02-2015 дата публикации

Intelligent wavelength selection optical cross connection system with signal conditioning function

Номер: CN104363045A
Автор: SONG CHUNYING, ZHANG RUI, WANG DONGFENG, CHEN WEIFENG, QIAN RUIJIE, WANG WENBO, LI YANG, HAN ZHE, YANG CHUNPU
Принадлежит:

The invention relates to an intelligent wavelength selection optical cross connection system with a signal conditioning function. The system comprises a wavelength selection optical cross connection unit formed by a wavelength selection module and an optical cross connection device, a channel monitoring unit and a signal conditioning unit. DWDM signals transmitted from an optical link are input from the input end of a wavelength selection switch, then are output to the optical cross connection device (OXC) through multiple output ports of the wavelength selection switch, crossed by the optical cross connection device (OXC) and outputted to optical splitters through the output ports of the optical cross connection device (OXC). Each optical splitter is connected with the channel monitoring unit and the signal conditioning unit, the channel monitoring unit is used for controlling power values, center wavelengths and signal-to-noise parameters of the input optical signals and transmits the ...

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Номер записи: 7
28-01-2015 дата публикации

Low-noise remote pump EDFA

Номер: CN104319611A
Автор: WANG WEILONG, CHEN WEIFENG, WANG DONGFENG, QIAN RUIJIE, ZHANG XIAOFENG, ZHANG RUI, YANG CHUNPU, WANG WENBO, SUN JING, LI YANG, WANG YAO
Принадлежит:

The invention relates to a low-noise remote pump EDFA. The low-noise remote pump EDFA comprises a passive gain unit, an optical cable part and a pump unit part; the passive gain unit is formed by connecting a first optical isolator ISO1, a first wavelength division multiplexer WDM1, a first erbium doped fiber EDF1, a second wavelength division multiplexer WDM2, a second optical isolator ISO2, a gain flattening filter, a third wavelength division multiplexer WDM3, a second erbium doped fiber EDF2, a dichroic mirror and an optical isolator ISO3 in sequence; a pump source is formed by combining an EDFA pump source with a Raman pump source, the Raman pump source is used for amplifying the EDFA pump source, the purpose that pump power injected into the passive gain unit does not change or even is higher under the condition of relative small power of the EDFA pump source is achieved, the non-relay optical transmission distance is prolonged, no cable needs to be laid in the long-distance optical ...

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Номер записи: 8
04-02-2015 дата публикации

Strictly non-blocking switch network

Номер: CN104333519A
Автор: LIU JIA, ZHANG RUI, ZHANG XIAOFENG, QIAN RUIJIE, WANG DONGFENG, CHEN WEIFENG, SUN JING, LI YANG, WANG WENBO, YANG CHUNPU
Принадлежит:

The invention relates to a data switch network in the communication field and specifically relates to a strictly non-blocking switch network. According to the switch network, 6 N*N (N must be the multiple of 4) switch chips are adopted to realize the strictly non-blocking switch network having the cross scale of 2N*2N. Each N*N switch chip is provided with N input channels and N output channels; the 6 N*N switch chips are matched to set up a 2N*2N switch network structure, and therefore, the strictly non-blocking switch network with 2N input channels and 2N output channels can be realized. The strictly non-blocking switch network has the beneficial effects that the switch architecture is simplified, the number and difficulty of cascade wiring are reduced, the hardware cost is reduced and the route selecting flexibility during switching is improved.

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Номер записи: 9