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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 20. Отображено 20.
18-02-2015 дата публикации

Method and device for reconstructing directions of 5.1 multi-channel sound sources

Номер: CN104363555A
Автор: HU RUIMIN, ZHANG MAOSHENG, YAO XUECHUN, WANG XIAOCHEN, JIANG LIN, TU WEIPING, WANG SONG, YANG SHENG
Принадлежит:

The invention relates to a device and a method for reconstructing the directions of 5.1 multi-channel sound sources. The method includes establishing Cartesian rectangular coordinate systems in original sound fields according to known sound source signals s(t), and computing direction vectors v0 of sound sources received by sound listening points; selecting four loudspeakers comprising the directions, respectively multiplying the sound signals s(t) by four weight factors and then distributing the sound signals s(t) to the four selected loudspeakers; computing direction vectors v of sound sources sensed at the sound listening points after signals are emitted by the loudspeakers in reconstructed sound fields, building equivalent models of the direction vectors v0 of the original sound sources and the direction vectors v of sound images in the reconstructed sound fields and solving the models to obtain values of the weight factors; distributing signals of the loudspeakers by the aid of the ...

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Номер записи: 1
14-01-2015 дата публикации

Quantitative method and device for sub-band division in audio coding bandwidth expansion

Номер: CN104282311A
Автор: HU RUIMIN, ZHANG MAOSHENG, YAO XUECHUN, WANG XIAOCHEN, JIANG LIN, TU WEIPING, WANG SONG, YANG SHENG
Принадлежит:

The invention relates to a quantitative method and device for sub-band division in audio coding bandwidth expansion. Training sample high-frequency signals are divided four times in sequence, sample point division points are obtained according to the minimum value of the product of sample point standard deviations of two new sub-bands every time the training sample high-frequency signals are divided, finally, the sixteen sample point division points are obtained, the input audio coding bandwidth is expanded on the basis of the sixteen sample point division points, the better high-frequency spectrum structure can be obtained and is more similar to the frequency spectrum shape, and therefore the high frequency spectrum rebuilding quality is improved. According to the sub-band division method, the statistical property in sub-band quantization is sufficiently considered; compared with a Bark band or uniform division mode, the subjective hearing MOS is slightly improved, and the signal to noise ...

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Номер записи: 2
11-08-2023 дата публикации

Safety prevention and control method and system for typhoon early warning period of road and bridge construction site

Номер: CN116579608A
Автор: LI HENG, GAO XIAOMING, YAO XUECHUN, YU LIANGCHENG, WANG CHEN, CUI BENBEN
Принадлежит:

The invention discloses a road and bridge construction site typhoon early warning period safety prevention and control method and system, and belongs to the technical field of road and bridge construction, and the method comprises the following steps: obtaining point cloud data of a road and bridge construction site, and preprocessing the point cloud data to obtain preprocessed point cloud data; performing semantic segmentation on the preprocessed point cloud data based on the optimal semantic segmentation model, and outputting a semantic segmentation label of each point; selecting a target detection object, calling the object of the category corresponding to the target detection object according to the output semantic segmentation label to perform hidden danger detection, and judging whether the target detection object has a potential safety hazard or not; and if the hidden danger does not exist, outputting a detection result, and if the hidden danger exists, automatically calling a corresponding ...

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Номер записи: 3
10-02-2016 дата публикации

Concrete trowelling machine that vibrates fast

Номер: CN0205024573U
Автор: DONG HELIN, YAO XUECHUN, HE SHENGLI, WANG CHUNXIA, ZHAO XIANGYUN, XI BINGYIN, WANG CHENG, WU RONG, GAO XIAOLEI
Принадлежит:

The utility model relates to a concrete trowelling machine that vibrates fast, including first slide crossbeam and the second that are parallel to each other and have the determining deviation crossbeam that slides, two slide passes through many connecting rod fixed connection between the crossbeam, two slide between the top of crossbeam, are equipped with a backing plate, set up a vibrating motor on the backing plate, the bottom of the first crossbeam that slides is fixed along the first crossbeam length direction that slides and is provided with many vertical vibration reinforcing bars, the slide top at the both ends of crossbeam of first slide crossbeam and second is equipped with fixed lug respectively.

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Номер записи: 4
24-12-2014 дата публикации

Three-dimensional audio multichannel grouping and clustering coding method and three-dimensional audio multichannel grouping and clustering coding system

Номер: CN104240712A
Автор: HU RUIMIN, ZHANG MAOSHENG, YAO XUECHUN, WANG XIAOCHEN, JIANG LIN, TU WEIPING, WANG SONG, YANG SHENG
Принадлежит:

The invention relates to a three-dimensional audio multichannel grouping and clustering coding method and a three-dimensional audio multichannel grouping and clustering coding system. By the characteristic that signal sub-band enveloping structures of the same group of loudspeakers of the same sound source are similar, a calculating method based on sub-band frequency point extreme value enveloping similarity is provided to perform dynamic three-dimensional audio grouping and down conversion, the grouping calculation complexity of the calculating method is far lower than that of the traditional channel correlation calculating method, but the accuracy of the calculating method is similar to that of the traditional channel correlation calculating method. Compared with the existing multichannel down-conversion coding method, the three-dimensional audio multichannel grouping and clustering coding method has the advantages that a plurality of loudspeakers which form a main sound image can be ...

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Номер записи: 5
07-01-2015 дата публикации

ISF coefficient vector quantization method and device

Номер: CN104269176A
Автор: HU RUIMIN, ZHANG MAOSHENG, YAO XUECHUN, WANG XIAOCHEN, JIANG LIN, TU WEIPING, WANG SONG, YANG SHENG
Принадлежит:

The invention relates to an ISF coefficient vector quantization method and device. The ISF coefficient vector quantization method comprises the steps that a trained ISF coefficient in a multi-zone code table is converted into an LPC coefficient, zone indexes Choosen_cluster (i), the index VQ (j) of primary vector quantization VQ and the index SVQ[5] of secondary split vector quantization SVQ are obtained for conducting quantization on the ISF[16] coefficient to be quantized, then quantized LPC_q[16] is obtained, the quantized LPC_q[16] of the current frame is further obtained, and a corresponding power spectrum pf[128] is obtained through calculation based on the original ISF[16] coefficient according to a power spectrum computational formula; the spectrum distortion SD corresponding to the current zone is obtained through calculation according to the obtained quantized LPC_q[16] of the current frame and the power spectrum pf[128] corresponding to the original LPC[16] coefficient and is ...

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Номер записи: 6
28-07-2023 дата публикации

Swinging FRP (Fiber Reinforce Plastic) combined thin-wall hollow pier and construction process thereof

Номер: CN116497692A
Автор: LI HENG, YAO XUECHUN, YE TAO, HE YULONG, LI HAIFENG, ZHAO YAOBING
Принадлежит:

The invention provides a swingable FRP combined thin-wall hollow pier which comprises a bearing platform and a pier column suitable for being installed on the bearing platform, and the pier column comprises an FRP fiber layer, a plurality of hollow steel pipes wrapped by the FRP fiber layer and lattice beams. Wherein the outer sides of the hollow steel pipes are fixedly connected through the lattice beams to form a core framework with a concrete containing cavity, and a plurality of shear nails are arranged on the outer sides of the hollow steel pipes; core concrete is poured between the concrete accommodating cavity of the core framework and the FRP fiber layer and between the outer side of the core framework and the FRP fiber layer; a first transverse steel plate is fixed at the bottom of the core framework; a second transverse steel plate suitable for being fixedly connected with the first transverse steel plate is arranged on the bearing platform, and a plurality of prestressed steel ...

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Номер записи: 7
21-07-2023 дата публикации

Monitoring management method and system for steel box girder construction

Номер: CN116468694A
Автор: YAO XUECHUN, SONG PAN, YUAN BAO, LIU YAJIE, LU YOUYING, YUE LIQIANG, WANG YUN
Принадлежит:

The invention provides a monitoring management method and system for steel box girder construction, and relates to the technical field of data identification, and the method comprises the steps: setting an observation reference point based on real-time construction data, laying an image collection device according to the observation reference point, setting a settlement monitoring point and a settlement monitoring period, generating an identification number through a calibration device, and setting a settlement monitoring period according to the identification number; controlling the image acquisition device to perform image acquisition of the bracket upright post according to the settlement monitoring period, performing supervision verification of settlement measurement according to an image acquisition result and an identification number, outputting a first verification result, generating identification characteristics of a hoisting object based on real-time construction data, performing ...

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Номер записи: 8
18-07-2023 дата публикации

Railway slope stability detection and analysis method and system

Номер: CN116451541A
Автор: YAO XUECHUN, YUAN BAO, WANG BO, LIU YAJIE, WANG JUNYI, ZHANG CHUNLEI, MENG YONGXING
Принадлежит:

The invention discloses a railway slope stability detection and analysis method and system, and relates to the field of slope detection, and the method comprises the steps: obtaining a preset environment parameter set; acquiring basic information of a preset railway slope to obtain a preset basic parameter set; performing slope stability correlation analysis on the M environmental indexes and the N basic indexes in sequence based on historical railway slope instability records, and establishing a stability correlation index set according to a correlation analysis result; performing traversal matching on the M environment index parameters and the N basic index parameters in sequence according to the stability association index set to obtain a stability association index parameter set; and analyzing the stability correlation index parameter set through the stability intelligent analysis model to obtain a preset stability analysis result. The technical problem that the stability analysis effect ...

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Номер записи: 9
27-06-2023 дата публикации

Foam concrete construction device

Номер: CN116330475A
Автор: YAO XUECHUN, SONG PAN, YUAN BAO, JIAO SHUQI, CHEN TAO
Принадлежит:

The foam concrete construction device comprises a shell, a first feeding assembly, a second feeding assembly and a driving assembly are installed at the top of the shell, and a discharging assembly is installed at the bottom of the shell; a stirring shaft is rotationally connected to the shell, extends into the shell and is rotationally connected with a plurality of stirring rods, and a plurality of stirring blades are mounted on the stirring rods; the stirring shaft and the plurality of stirring rods are in transmission connection with the driving assembly; a scraping plate is rotationally connected in the shell, the inner bottom wall and the inner side wall of the shell are in sliding contact with the scraping plate, the scraping plate is in transmission connection with the stirring shaft, and the rotating direction of the scraping plate is opposite to that of the stirring shaft; a feeding assembly located in the inner cavity of the shell is installed on the stirring shaft and communicates ...

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Номер записи: 10
21-07-2023 дата публикации

FRP-steel-concrete combined pier and preparation method thereof

Номер: CN116463933A
Автор: YANG XUEQIANG, YAO XUECHUN, XIE ZIYANG, TANG YONG, LI HAIFENG, SUN WEI
Принадлежит:

The invention provides an FRP pipe-steel-concrete combined pier. A pier body of the FRP pipe-steel-concrete combined pier is formed by combining an FRP pipe on the outer side, a steel pipe on the inner side and a dry plate and pouring concrete. The FRP pipe on the outer side is good in corrosion resistance, and the situation that the FRP pipe and concrete in the FRP pipe are corroded can be effectively avoided; the strength, the bearing capacity and the durability of the pier body can be effectively enhanced through the internal steel pipes and steel plates; no concrete is poured in the steel pipe, so that the pier body has good ductility; meanwhile, after the pier is maintained, replaced or abandoned in the later period, the FRP pipe on the outer layer is easy to dismantle, concrete can fall off conveniently, and steel can be recycled.

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Номер записи: 11
04-08-2023 дата публикации

Swinging extra-large bridge thin-wall hollow high pier and construction technology

Номер: CN116537040A
Автор: LI HENG, YAO XUECHUN, YAN FENGZUO, GAO XIAOMING, LI HAIFENG, NING XIZHAN
Принадлежит:

The invention provides a swingable extra-large bridge thin-wall hollow high pier which comprises a pier base and a pier column, a machining groove suitable for installing the pier column is formed in the pier base, the pier column comprises a steel plate layer and an FRP layer, the steel plate layer comprises an inner steel plate layer and an outer steel plate layer, and the inner steel plate layer and the outer steel plate layer are arranged in the machining groove. A concrete layer is poured between the inner steel plate layer and the outer steel plate layer, the FRP layer is arranged on the outer side of the outer steel plate layer, and a rubber layer is arranged between the outer steel plate layer and the FRP layer. A transverse steel plate and a longitudinal steel plate are fixedly arranged in the machining groove, the transverse steel plate is fixedly connected with the bottom of the pier column, and a plurality of prestressed steel bars are connected between the longitudinal steel ...

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Номер записи: 12
07-01-2015 дата публикации

Voice frequency bandwidth extension device and method achieved in switching mode

Номер: CN104269173A
Автор: HU RUIMIN, ZHANG MAOSHENG, YAO XUECHUN, WANG XIAOCHEN, JIANG LIN, TU WEIPING, WANG SONG, YANG SHENG
Принадлежит:

The invention relates to a voice frequency bandwidth extension device and method achieved in a switching mode. Voice signals and audio signals of input bandwidth signals are classified, transformation domain bandwidth extension encoding or linear prediction bandwidth extension encoding is selected according to the classification, and high-frequency signals or low-frequency signals are encoded; a decoding mode is selected according to different encoding modes, and high-frequency signals are synthetized. The type difference of the voice signals and the audio signals is considered comprehensively, and different bandwidth extension strategies are used for different signals. Compared with an AVS-P10 encoder, subjective hearing MOS marks are a little increased and the objective quality signal-to-noise ratio is obviously improved.

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Номер записи: 13
28-05-2014 дата публикации

Method and device for rebuilding sound source direction and distance in multichannel system

Номер: CN103826194A
Автор: HU RUIMIN, ZHANG MAOSHENG, YAO XUECHUN, TU WEIPING, WANG XIAOCHEN, JIANG LIN, YANG SHENG
Принадлежит:

The invention discloses a method and device for rebuilding a sound source direction and distance in a multichannel system. The particle speed and sound pressure of a sound source received by a sound listening point are calculated according to known sound source signals, the distance between the sound listening point and the sound source is (i)r(/i), four loudspeakers in the direction are selected according to the particle speed, the sound source signals are multiplied by four weight factors respectively and then are distributed to the four selected loudspeakers, then particle speed and sound pressure of a sound image inducted at the sound listening point are calculated at a playback end after the loudspeakers in a rebuilt sound field send signals, finally, direction and distance equivalent models are built according to the particle speed and sound pressure of the original sound source and the particle speed and sound pressure of the sound image in the rebuilt sound field, and the signals ...

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Номер записи: 14
22-08-2023 дата публикации

Bridge construction facility and material positioning method and device and computer storage medium

Номер: CN116630595A
Автор: LI HENG, GAO XIAOMING, YAO XUECHUN, YU LIANGCHENG, WANG CHEN, CUI BENBEN
Принадлежит:

The invention discloses a bridge construction facility and material positioning method and device and a computer storage medium, and belongs to the technical field of facility positioning. Comprising the following steps: acquiring a semantic segmentation data set; training a semantic segmentation model by using the semantic segmentation data set to obtain an optimal semantic segmentation model; performing semantic segmentation on the collected point cloud data of the construction site according to the optimal semantic segmentation model, and positioning facilities and materials of the construction site based on a rapid positioning algorithm; and generating a visual result according to a positioning result of the quick positioning algorithm. According to the method, the positions of all facilities and materials can be quickly positioned on the basis of acquiring field data by matching with an unmanned aerial vehicle, and all objects in each category are counted; the labor-intensive work ...

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Номер записи: 15
22-08-2023 дата публикации

Building insulation board cutting device

Номер: CN116619470A
Автор: CHE LIMING, YAO XUECHUN, ZHANG ZIKUO, TANG YONG, JI GUOKUI, ZHENG ZEHAO, ZHOU BOHAN, LI JIAXIANG, HUANG LING, CHEN HSIAO-FAN
Принадлежит:

The invention discloses a building insulation board cutting device which comprises a mounting platform, a mounting cavity is formed in the mounting platform and arranged in the length direction of the mounting platform, and a cutting penetrating-out channel is formed in the top of the mounting cavity; the cutting and pressing mechanism comprises a first driving assembly, a mounting base arranged in the mounting cavity and arranged in the length direction of the mounting platform, a pressing plate arranged above the mounting platform, a cutting piece arranged on the mounting base and a second driving assembly. The first driving assembly drives the mounting base and the pressing plate to do relative/deviating movement so that the pressing plate can tightly press the heat preservation plate, meanwhile, the cutting piece is driven to penetrate out of the cutting penetrating-out channel, and the second driving assembly drives the cutting piece to move in the length direction of the mounting ...

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Номер записи: 16
11-08-2023 дата публикации

Wood sawing device for house building construction

Номер: CN116572326A
Автор: YAO XUECHUN, LIN QINGQUAN, WANG JIAJUN, JIANG HAIZHI, GAO YULIANG, YIN TAO, YANG DAOKANG
Принадлежит:

The invention relates to the technical field of wood sawing, and discloses a wood sawing device for house building construction, which comprises a worktable, a fixing frame is mounted at the top of the worktable, a second through hole is formed in the worktable, a first telescopic component is mounted at the top of the fixing frame, and a lifting shell is mounted at one end of a piston rod of the first telescopic component. And the same mounting pipe is movably mounted on the inner walls of the two sides of the lifting shell. When the device is used, a cutting blade is used for sawing wood, in the sawing process, cooling liquid is injected into a cavity through a liquid inlet pipe, the cooling liquid enters a mounting pipe and a mounting shell, and the cooling liquid in the mounting shell flows through a first penetrating hole, effectively exchanges heat with the mounting shell and then flows back into the mounting pipe through a liquid outlet hole; and the liquid pump pumps out the cooling ...

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Номер записи: 17
11-07-2023 дата публикации

Highway subgrade settlement observation device and use method thereof

Номер: CN116412796A
Автор: JIAO SHUQI, YAO XUECHUN, CHEN TAO, LI QIANG, GUAN WEIQIANG
Принадлежит:

The invention discloses a highway subgrade settlement observation device and a use method thereof, and the device comprises a measurement mechanism which is disposed on a to-be-observed subgrade; the measuring mechanism comprises a settlement plate mounted on the roadbed, the bottom end of the settlement plate is fixedly connected with a settlement box, and the settlement box is embedded in the roadbed; the observation mechanism is mounted outside the roadbed; the top end of the base is lower than the top surface of the roadbed; a measuring tube is mounted on the base, and a measuring assembly is arranged in the measuring tube; one end of the communicating mechanism is communicated with the settling box, and the other end of the communicating mechanism is communicated with the inner cavity of the measuring tube. The device is simple in construction, low in cost, convenient to use, capable of being used for repeated measurement, free of influence on pavement passage, small in pavement damage ...

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Номер записи: 18
01-08-2023 дата публикации

Pile foundation over-filling monitoring system based on floating ball method

Номер: CN116517047A
Автор: YAO XUECHUN, DAI CHUANGUANG, YU LONG, LONG ZHENXUAN, ZHANG JIA, GAO RUITING, ZHOU LIWEI, TONG ZONGYOU, SHEN ZHIWEI, MEN XUE
Принадлежит:

The invention belongs to the technical field of pile foundation over-irrigation, and particularly relates to a pile foundation over-irrigation monitoring system based on a floating ball method, which comprises a tubular pile body, and a control device is arranged above the tubular pile body; a monitoring device is arranged below the lifting plate; and a positioning device is arranged in the lifting plate. According to the pile foundation over-filling monitoring system based on the floating ball method, a control motor is started, a rotating shaft drives a rolling rod to rotate to roll a pull rope, the pull rope pulls a lifting plate, a floating ball is driven to move, the height of the floating ball is adjusted, after a certain amount of concrete is poured, the floating ball floats, a swing plate swings, and the lowermost rotating rod is driven to rotate; the driving gear drives the connecting gear to rotate, the connecting gear drives the driven gear to rotate, then the steel rope is rolled ...

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Номер записи: 19
29-08-2023 дата публикации

Antenna structure for wireless communication and wireless communication terminal

Номер: CN116666981A
Автор: WU YUFENG, YAO XUECHUN, HU GAOYANG, SUN KAI, JIAO RENYU
Принадлежит:

The invention discloses an antenna structure for wireless communication and a wireless communication terminal.The antenna structure comprises a main antenna and an auxiliary antenna, the main antenna is used for transmitting and receiving wireless signals, the auxiliary antenna is arranged on one side of the main antenna, and a gap is formed between the auxiliary antenna and the main antenna; the auxiliary antenna is coupled with the Nth harmonic of the fundamental wave of the main antenna in a non-contact manner, and N is greater than or equal to 2. According to the antenna structure, one side of the main antenna is also provided with the auxiliary antenna which is indirectly coupled with the main antenna through the gap, and the auxiliary antenna is coupled with the Nth harmonic of the main antenna, so that in the working process of the main antenna, the auxiliary antenna can weaken the Nth harmonic of the fundamental wave emitted by the main antenna; and the RSE test frequency point ...

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Номер записи: 20