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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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Форма поиска

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 39. Отображено 39.
07-04-2023 дата публикации

PZT piezoelectric ceramic and preparation method of electrode of PZT piezoelectric ceramic

Номер: CN115942856A
Автор: ZHANG XIUQIN, WU YIFEI
Принадлежит:

The invention discloses a PZT piezoelectric ceramic electrode and a preparation method thereof, and belongs to the technical field of piezoelectric ceramics. Comprising the following steps: 1, taking a ceramic sheet printed with an electrode, introducing air, heating to 450-550 DEG C, and preserving heat for 45-90 minutes; 2, the air flow is increased, the temperature continues to rise to 750-850 DEG C, and heat preservation is conducted for 10-30 min; 3, after heat preservation is finished, the temperature is reduced to 550-650 DEG C, nitrogen is introduced, and the temperature is kept for 3-5 min; and 4, reducing the nitrogen flow, cooling to normal temperature along with the furnace, and taking out. The lead zirconate titanate piezoelectric ceramic electrode is prepared from air and nitrogen, and the nitrogen is utilized to increase the number of oxygen vacancies in a ceramic crystal and reduce defects caused by electrode surface oxidation and microdefects in a glass phase, so that the ...

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Номер записи: 1
18-07-2023 дата публикации

Asymmetric double-sided sounding loudspeaker

Номер: CN116456248A
Автор: ZHANG YONGLEI, REN JIANGFENG, WANG RUFEI, WU YIFEI
Принадлежит:

The invention relates to the technical field of loudspeakers, in particular to an asymmetric double-sided sounding loudspeaker, which is characterized in that a first vibrating diaphragm and a second vibrating diaphragm are respectively arranged on two sides of a basin stand and are respectively connected with a voice coil and a magnetic circuit assembly through a first centering disk and a second centering disk which are arranged on the basin stand. A magnetic circuit assembly is arranged on the second centering disk to form a magnetic circuit system capable of moving up and down, and a second vibrating diaphragm is additionally arranged on a flexible magnetic circuit; when the voice coil is electrified and is driven by the magnetic field of the magnetic circuit assembly to drive the first vibrating diaphragm to vibrate, the magnetic circuit assembly and the voice coil generate counter-acting force, then the magnetic circuit system is reversely driven, the second vibrating diaphragm in ...

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Номер записи: 2
25-04-2023 дата публикации

Training method and system of audio and video speech recognition model, and electronic equipment

Номер: CN116013270A
Автор: QIAN YANMIN, LI JIAHONG, LI CHENDA, WU YIFEI
Принадлежит:

The embodiment of the invention provides a training method and system of an audio and video speech recognition model and electronic equipment. The method comprises the following steps: respectively carrying out front-end processing on audios and videos in audios and videos to obtain an acoustic feature sequence and a lip movement feature sequence; performing time dimension splicing based on the acoustic feature sequence of the sound mode and the lip movement feature sequence of the video mode to obtain a fused feature sequence; determining a deep fusion feature code of each sub-sequence with a cross-modal context in the fusion feature sequence through an attention module of the encoder, and inputting partial feature codes of corresponding audios in the deep fusion feature codes into a connection time sequence classification module and a decoder of the audio and video speech recognition model; and training the audio and video speech recognition model according to the reference recognition ...

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Номер записи: 3
02-05-2023 дата публикации

Vibration monitoring system and method for large-span rail transit bridge

Номер: CN116046138A
Автор: WU YIFEI, HAN DAGUANG, JIANG ENGUI, GUO TONG, ZHU YUANDONG, LIU JIE, ZHAO YINGCI, ZHANG MINTE, HE HUCHENG, HU KAIXIN
Принадлежит:

The invention discloses a vibration monitoring system and method for a large-span rail transit bridge, and relates to the technical field of bridge structure health monitoring. The system comprises a subsystem I and an approach bridge vibration monitoring subsystem; the subsystem II is a main bridge wired sensing subsystem; the subsystem III is a main bridge wireless sensing subsystem; and the subsystem 4 is a data processing terminal subsystem. According to the invention, the wired sensor and the wireless sensor are simultaneously adopted to monitor different applicable monitoring points respectively, so that the number of monitoring points of a large-span rail transit bridge is increased, the data integrity of the structural health monitoring system is improved, the characteristic compensation of compressed train bridge monitoring vibration data can be effectively realized, and the reliability of the structural health monitoring system is improved. The integrity and reliability of wireless ...

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Номер записи: 4
28-09-2017 дата публикации

LIGHT-WEIGHT VEHICLE-MOUNTED VIBRATION SPEAKER BASED ON 3D-SOUND EFFECT

Номер: WO2017161473A1
Автор: WANG, Ping, LI, Hongyuan, WU, Yifei
Принадлежит:

A light-weight vehicle-mounted vibration speaker based on a 3D-sound effect comprises a support device, an elastic connection member (3), a radiation plate (4), a damping cover (5) and a vibration source (6) that are mounted on an automobile. The support device and the radiation plate (4) are connected by means of the elastic connection member (3). The damping cover (5) and the support device are fixedly connected. The damping cover (5), the support device, the elastic connection member (3) and the radiation plate (4) form a vibration cavity in an encircling manner. The vibration source (6) is disposed in the vibration cavity. One end of the vibration source (6) is fixedly connected to the radiation plate (4), and the other end is fixedly connected to the damping cover (5). The damping cover (5) is made of an aramid fiber knitting material. By means of the solution, the size, cost, and weight of the product are effectively reduced, the vibration source (6) is prevented from being out of ...

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Номер записи: 5
04-08-2023 дата публикации

Submerged plant-ecological interface system for in-situ remediation of water body as well as preparation method and application of submerged plant-ecological interface system

Номер: CN116535006A
Автор: WANG XIN, TANG JIANGWU, SUN HONG, YAO XIAOHONG, SHEN QI, WU YIFEI
Принадлежит:

According to the submerged plant-ecological interface system for in-situ treatment of the water body, the submerged plants take roots on the ecological interface and form a plant rhizosphere microbial environment with the ecological interface by providing functional microbial communities and fertilizers for regulating and controlling growth for the submerged plants, so that the submerged plant-ecological interface system is constructed, and the in-situ treatment of the water body is realized. The problems of high planting environment requirement, high construction difficulty, low planting survival rate, slow water purification effect, high maintenance cost and the like of the existing method for purifying water by using submerged plants can be effectively improved; plants and microorganisms are organically combined together to form an efficient bioremediation complex, and the efficient bioremediation complex has remarkable pollution removal, water quality purification and water body ecological ...

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Номер записи: 6
19-02-2015 дата публикации

SUSPENSION STRUCTURE OF MICRO-LOUDSPEAKER

Номер: WO2015021729A1
Автор: WU, Yifei, XU, Jinguo, WANG, Zhenzhen, WANG, Kai
Принадлежит:

The present invention relates to a suspension structure of a micro-loudspeaker. In the suspension structure, a first end surface of a diaphragm is fixedly connected to one end of a voice coil, and a plucking block is connected to a second end surface of the diaphragm. The plucking block comprises an annular bracket, a plurality of elastic arms and a flexible board, wherein the end of the annular bracket and the diaphragm are fixed between a basin stand and a front cover; each elastic arm is distributed between the annular bracket and the flexible board; and one end of each elastic arm is connected to an internal side wall surface of the annular bracket, and the other end of each elastic arm is respectively connected to a side wall surface of the flexible board. A conducting wire on the voice coil is welded to the flexible board. The suspension structure of a micro-loudspeaker of the present invention reduces low-frequency distortion, improves the power of the product and prolongs the life ...

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Номер записи: 7
07-09-2018 дата публикации

SOUND-PRODUCING VIBRATION TWO-IN-ONE EXCITER APPLICABLE TO TOUCH SCREEN

Номер: WO2018157668A1
Автор: WANG, Ping, LI, Hongyuan, WU, Yifei
Принадлежит:

A sound-producing vibration two-in-one exciter applicable to a touch screen, comprising a touch screen. The exciter further comprises a basin frame and a magnetic shell fixedly connected to the basin frame; the magnetic shell is provided with an upwardly opening cavity; a magnet is fixed inside the cavity; a pole piece is fixed to the magnet; a voice coil is provided inside the magnetic shell; an elastic support is fixed to the basin frame; the voice coil is fixedly connected to the elastic support and is suspended between the magnet and the magnetic shell; the elastic support is provided with a vibrating plate, which is in contact with the touch screen. The structure is simple and reasonable, and easy to operate, there is no need to mount a motor and a loudspeaker at the same time, the occupied space is small, and the costs are low.

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Номер записи: 8
02-07-2015 дата публикации

SUSPENDED ELASTIC DIAPHRAGM

Номер: WO2015096526A1
Автор: WU, Yifei, WANG, Zhenzhen, WANG, Kai, XU, Jinguo
Принадлежит:

The present invention relates to the field of micro speakers, particularly to a suspended elastic diaphragm of a micro speaker. The suspended elastic diaphragm comprises a support installed around the end surface of the speaker diaphragm, a plurality of elastic arms and flexible plates; a suspension frame is connected to a fitting frame via at least two suspension arms; each elastic arm is arranged between the support and a flexible plate; one end of each elastic arm is connected to the inner side wall of the support, and the other end is connected to the outer side wall of the flexible plate; the inner wall of the flexible plate is provided with two oppositely disposed flanges; the support and the elastic arms are provided with conductive components; the conductive components on two elastic arms extend into the flanges; and the conductive components on the other elastic arms extend to the joint of the elastic arms and the flexible plate. The present invention avoids breaking of the voice ...

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Номер записи: 9
03-08-2017 дата публикации

BONE CONDUCTOR DRIVEN BY DOUBLE COILS

Номер: WO2017128251A1
Автор: WANG, Zhenzhen, XU, Jinguo, WU, Yifei
Принадлежит:

A bone conductor driven by double coils, comprising a magnetically conductive housing (1) having an accommodating space, a lower cover body (2) that seals the lower part of the accommodating space of the magnetically conductive housing (1), and a suspension system (3) mounted above the magnetically conductive housing (1). An upper pole piece (4) is provided on the suspension system (3), the lower surface of the upper pole piece (4) is connected to a magnet (5), and the lower surface of the magnet (5) is connected to a lower pole piece (6), the upper pole piece (4), the magnet (5) and the lower pole piece (6) being suspended in the accommodating space; at least a first annular coil (7) and a second annular coil (8) are provided within the magnetically conductive housing (1), the first annular coil (7) and the second annular coil (8) encircling the upper pole piece (4), the magnet (5) and the lower pole piece (6) the first annular coil (7) and the second annular coil (8) having opposite, ...

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Номер записи: 10
06-06-2023 дата публикации

Multi-interface cargo transfer device and freight warehousing system composed of multi-interface cargo transfer device

Номер: CN116216162A
Автор: KE MINGFENG, WANG WENFEI, LI DANGWEI, JIN LYUJUN, CUI HAIYANG, YOU PINYUAN, CHEN LI, FENG LIANG, WANG WEIWEI, XU CHENGYUAN, LIU WENYONG, WU YIFEI, JIAN SONGHUAN
Принадлежит:

The invention discloses a multi-interface cargo transfer device and a freight warehousing system composed of the multi-interface cargo transfer device, the multi-interface cargo transfer device comprises a rack, a lifting type cargo conveying mechanism is arranged on the rack, and the lifting type cargo conveying mechanism comprises a plurality of layers of lifting modules which are arranged at intervals in the longitudinal direction; a cargo conveying unit is arranged on the edge of the lifting module. The side part of the lifting module is provided with at least two cargo interfaces; and a cargo conveying unit is arranged between the two opposite cargo interfaces. The cargo height is controlled through the lifting type cargo conveying mechanism, the cargo handling action is conducted through cooperation of the multiple cargo connectors and the cargo conveying unit, effective utilization of the circumferential space of the multi-connector freight device is achieved, and therefore the carrying ...

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Номер записи: 11
14-07-2023 дата публикации

Hydraulic electromagnetic deviation rectifying device of slope bridge

Номер: CN116427301A
Автор: YAO GUOWEN, WU YIFEI, HE XUANBO, HUANG NING, RAN CHONGYANG, ZHU YUANDONG
Принадлежит:

The invention discloses a hydraulic electromagnetic deviation rectifying device for a slope bridge, and particularly relates to the field of bridge safety. Comprising a first hydraulic rod and a hydraulic cavity, the first hydraulic rod is provided with a piston in sliding sealing connection with the hydraulic cavity, the hydraulic cavity is filled with hydraulic oil, the end, away from the first hydraulic rod, of the hydraulic cavity is in sliding sealing connection with the piston and a second hydraulic rod connected with the piston, and the second hydraulic rod is provided with a reset mechanism; the reset mechanism comprises a power source, a first electromagnet, a second electromagnet, a conducting rod, a resistance wire and a control switch, the first electromagnet is electrically connected with the power source, the second electromagnet is arranged at the edge of the slope bridge body, and the conducting rod is connected to the free end of the second hydraulic rod, electrically connected ...

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Номер записи: 12
27-07-2017 дата публикации

RUT-RESISTANT ROAD PAVEMENT STRUCTURE AND PAVEMENT METHOD THEREOF EMPLOYING PENETRATION BY LATEX CEMENT MORTAR

Номер: WO2017125039A1
Автор: ZHONG, Ke, WU, Yifei, LUO, Sang, CHEN, Bo, LIU, Guoqiang, MA, Xiaochen, DING, Jing, HU, Chengyong, YUE, Guanghua, CHANG, Ronghua
Принадлежит:

A rut-resistant road pavement structure comprises the following layers sequentially disposed from bottom to top: a semi-rigid subbase course (1); an SBS modified emulsified asphalt binding layer (2); an asphalt concrete bottom surface course (3) in which a type II latex cement mortar penetrates asphalt; an asphalt concrete middle surface course (4) in which a type I latex cement mortar penetrates asphalt; and a highly viscous SMA-13 modified asphalt concrete top surface course (5). Also disclosed is a pavement method of the rut-resistant road pavement structure. The rut-resistant road pavement structure mitigates the problem in which middle and bottom surface courses of a road pavement having a semi-rigid subbase course contribute greatly to the formation of ruts under a high temperature and a heavy load, and is favorable for preventing formation of cracks, thereby improving overall capabilities of a surface course and a subbase course to resist distortion, shortening construction and maintenance ...

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Номер записи: 13
04-04-2023 дата публикации

File protection device with multiple anti-interference encryption means

Номер: CN115906195A
Автор: WU YIFEI, SU JUN, LI MIN
Принадлежит:

A file protection device with multiple anti-interference encryption means comprises a shell provided with a fixing groove and a cover body provided with a fixing protrusion, and locking holes are formed in the fixing protrusion and the fixing groove. The protection lock mechanism comprises a telescopic rod corresponding to the locking hole; the anti-interference encryption RFID assembly comprises a Type-C socket part, a radio frequency tag reading port, a password touch screen and a computer network module, a reader of the Type-C socket part emits a radio frequency signal A, a radio frequency tag of the reading port detects and receives the radio frequency signal A, and the storage battery is arranged in the device body. According to the device, the shell and the cover body are inserted into the fixing grooves through the fixing protrusions to form a complete device body, and meanwhile the telescopic rods on the four sides are inserted into the corresponding locking holes to lock and protect ...

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Номер записи: 14
25-08-2023 дата публикации

Neural network model quantitative compression method, electronic equipment and storage medium

Номер: CN116644797A
Автор: QIAN YANMIN, WANG HAOYU, LIU BEI, WU YIFEI, CHEN ZHENGYANG
Принадлежит:

The invention discloses a neural network model quantitative compression method, electronic equipment and a storage medium, and the method comprises the steps: carrying out the parameter expansion of a target pre-training model, and adding parameters needed by quantitative compression; an alternating direction multiplier method is used for the parameters, multiple optimal quantization compression model parameters under different fixed compression ratios are obtained, and the multiple optimal quantization compression model parameters correspond to multiple compression models; performing sensitivity analysis based on a Hessian matrix on different components of the plurality of compression models for performing mixed precision quantitative compression search which can provide an optimal model combination method under a certain compression ratio; and obtaining a final optimal quantitative compression model based on mixed precision search.

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Номер записи: 15
18-07-2023 дата публикации

Method for determining safe thickness of karst tunnel rock plate

Номер: CN116449419A
Автор: WU YIFEI, YANG HONGYUN, JIANG ENGUI, LIN ZHI, ZHAO YINGCI, XIE YU, ZHU YUANDONG
Принадлежит:

The invention discloses a method for determining the safety thickness of a karst tunnel rock plate, and relates to the technical field of karst tunnel construction monitoring. The method at least comprises the following steps: S1, constructing micro-seismic monitor sensors from a tunnel face to two sides of a tunnel secondary lining interval; s2, carrying out inversion on information such as longitudinal waves and transverse waves generated by a microseismic event monitored by a position sensor by using a double-difference positioning imaging method to obtain a specific coordinate of a microseismic source position, and obtaining a surrounding rock microseismic event space distribution diagram, so as to obtain a specific position of surrounding rock fracture and determine an interval distance from a farthest fracture point to a tunnel face; and S3, analyzing the distribution condition of the surrounding rock force system in the interval from the farthest fracture point to the tunnel face ...

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Номер записи: 16
23-06-2023 дата публикации

Training method of audio-visual voice separation model, electronic equipment and storage medium

Номер: CN116312607A
Автор: QIAN YANMIN, WU YIFEI, LI CHENDA
Принадлежит:

The embodiment of the invention provides a training method of an audio-visual voice separation model, electronic equipment and a storage medium. The method comprises the following steps: inputting mixed training audios of a plurality of speakers into an audio-visual voice separation model to obtain predicted spectrograms of the plurality of speakers; determining a predicted speaker audiovisual feature of the predicted spectrogram and a reference speaker audiovisual feature of a reference spectrogram of the mixed training audio; based on the cross-modal loss determined by predicting the audio-visual characteristics of the speaker and referring to the audio-visual characteristics of the speaker, the cross-modal loss is utilized to train the audio-visual voice separation model under the mixing precision quantization condition through a cross direction multiplier method, and a lightweight audio-visual voice separation model is obtained. According to the embodiment of the invention, quantitative ...

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Номер записи: 17
16-05-2023 дата публикации

Unidirectional enhanced composite driving loudspeaker

Номер: CN116132894A
Автор: ZHANG YONGLEI, WANG RUFEI, WU YIFEI
Принадлежит:

The invention relates to the technical field of loudspeakers, in particular to a unidirectional enhanced composite driving loudspeaker which comprises a loudspeaker unit, the loudspeaker unit comprises a voice diaphragm assembly, a suspension assembly, a support assembly and a first magnetic circuit assembly, and a magnetic cover plate is arranged on the back of the loudspeaker unit; and the independent excitation unit is arranged at the back of the loudspeaker unit, the independent excitation unit comprises a second magnetic circuit assembly, and the second magnetic circuit assembly drives the magnetic cover plate to vibrate. According to the loudspeaker, the independent excitation unit is arranged on the back of the loudspeaker unit, the second magnetic circuit assembly is arranged in the independent excitation unit, the second magnetic circuit assembly is used for driving the magnetic cover plate of the loudspeaker unit to vibrate, the magnetic cover plate vibrates to produce sound, ...

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Номер записи: 18
04-04-2023 дата публикации

Voice separation model training method and system based on jump memory network

Номер: CN115910093A
Автор: QIAN YANMIN, LI CHENDA, WU YIFEI
Принадлежит:

The embodiment of the invention provides a voice separation model training method and system based on a jump memory network. The method comprises the following steps: inputting multi-segment audio features determined by training voice into long and short-term memory elements for segment processing in a jump memory network to obtain historical memory states of the multi-segment audio features; inputting the historical memory state of the multi-segment audio characteristics into a long-short-term memory element for memory processing in a jump memory network, and outputting a predicted future memory state of the multi-segment audio characteristics; and taking the actual future memory state of the pre-prepared multi-segment audio features as a training target, and performing comparative prediction learning training on the voice separation model based on the predicted future memory state and the training target, so that the trained voice separation model learns the causal sequence modeling ability ...

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Номер записи: 19
04-04-2023 дата публикации

Mine fine tail mud-based unfired lightweight aggregate and preparation method thereof

Номер: CN115894074A
Автор: GAO SHUANGSHUANG, ZHU MINTAO, JIN ZIQING, SONG HUIYAN, NI DAYOU, WU YIFEI, LYU JIWEI, ZHANG HAIFENG
Принадлежит:

The invention relates to a mine fine tail mud-based unfired lightweight aggregate and a preparation method thereof. The mine fine tail mud-based unfired lightweight aggregate comprises the following components in parts by mass: 50-450 parts of mine fine tail mud, 50-100 parts of light sand, 550-950 parts of cement, 0.5-18 parts of an additive and 200-250 parts of water, wherein the additive is a mixture of sodium bicarbonate and ammonium bicarbonate; the mass ratio of sodium bicarbonate to ammonium bicarbonate is (5-9): (1-5). The preparation method of the mine fine tail mud-based unfired lightweight aggregate comprises the following steps: carrying out microwave medium-high fire heating treatment on mine fine tail mud; and the lightweight aggregate is subjected to preservative film covering maintenance, maintenance under the environment with the relative humidity of 20%-35% and carbon dioxide maintenance. According to the invention, comprehensive utilization of the mine fine tail mud can ...

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Номер записи: 20
01-08-2023 дата публикации

Adaptive quantization compression method and system of voice model and electronic equipment

Номер: CN116524941A
Автор: YU KAI, WANG HAOYU, LIU BEI, WU YIFEI, QIAN YANMIN
Принадлежит:

The embodiment of the invention provides an adaptive quantization compression method and system for a voice model and electronic equipment. The method comprises the following steps: carrying out matrix-based sensitivity analysis on a voice model, carrying out mixed precision quantization compression search on the voice model based on the analyzed sensitivity difference of different levels of a neural network in the voice model to quantization, and determining parameter weight distribution of the voice model under a set compression ratio; based on the parameter weight distribution, performing separation processing on the parameters of the voice model to obtain a plurality of separation intervals, and clustering the separation intervals to obtain a quantization target value of each separation interval; and performing multi-stage fine-tuning adaptive quantization compression on the voice model by using the quantization target value of each partition interval to obtain a lightweight voice model ...

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Номер записи: 21
06-06-2023 дата публикации

Vehicle-mounted combined switch based on piezoelectric ceramics

Номер: CN116232298A
Автор: WANG ENZE, ZHANG ZHIGANG, WU YIFEI
Принадлежит:

The invention relates to the technical field of automobile parts, in particular to a vehicle-mounted combined switch based on piezoelectric ceramics, which comprises a shell, a plurality of mounting ports, a plurality of piezoelectric ceramics, a plurality of piezoelectric ceramics and a plurality of piezoelectric ceramics, the decorative plate is used for covering the mounting opening; the PCB is arranged in the shell; the plurality of functional components are respectively arranged in the corresponding mounting ports, and each functional component comprises a light-emitting module, an FPC (Flexible Printed Circuit) board and piezoelectric ceramics; the top face of the light-emitting module is attached to the decorative plate and electrically connected with the PCB. The FPC board is electrically connected with the PCB; the positive electrode and the negative electrode of the piezoelectric ceramic are electrically connected with the FPC board, and the bottom surface of the piezoelectric ...

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Номер записи: 22
23-05-2023 дата публикации

Self-cleaning hole durable drainage pavement structure and laying method thereof

Номер: CN116145497A
Автор: ZHONG KE, WU YIFEI, SUN MINGZHI, LI JIALONG, XU HAO, QIU HUA
Принадлежит:

The invention belongs to the technical field of road engineering, and particularly discloses a self-cleaning hole durable drainage pavement structure and a laying method thereof.The self-cleaning hole durable drainage pavement structure comprises a pavement unit and a drainage unit, and the pavement unit comprises an upper surface layer, a bonding layer, a middle surface layer, a waterproof bonding layer, a lower surface layer, a stress absorption layer and a base layer which are sequentially arranged from top to bottom; the upper surface layer is made of a super-elastic porous mixture, the bonding layer is made of polyurethane modified emulsified asphalt, the middle surface layer is made of a porous asphalt mixture, the waterproof bonding layer is made of hot-sprayed modified asphalt, the lower surface layer is made of a high-modulus asphalt mixture, the stress absorbing layer is made of rubber asphalt mortar, and the base layer is made of cement stabilized macadam. And the height of the ...

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Номер записи: 23
04-04-2023 дата публикации

Ultra-thin multilayer piezoelectric ceramic side electrode printing device and printing method

Номер: CN115891409A
Автор: YU DONGFANG, ZHANG XIUQIN, QIU JUN, GAO FENG, XU YIDAN, ZHAO ZHENG, WU YIFEI
Принадлежит:

The invention discloses an ultrathin multi-layer piezoelectric ceramic side electrode printing device and method, and belongs to the field of printing. The printing device comprises a silk-screen printing tool, a side electric dipping printing jig and a printing positioning tool; the silk-screen printing tool is used for fixing a blank organic film and printing a silver paste pattern on the blank organic film; the side electric dipping printing jig is used for inserting a plurality of piezoelectric ceramic pieces, and the side faces of the same sides of the piezoelectric ceramic pieces are flush with one another; the printing positioning tool is provided with a printing area, the side electric dipping printing jig is detachably arranged in the printing area, and the printing positioning tool is used for fixing an organic film with a silver paste pattern and printing the silver paste pattern on the organic film on the piezoelectric ceramic piece; screw fixation is replaced, so that the piezoelectric ...

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Номер записи: 24
30-06-2023 дата публикации

Large-deformation surrounding rock control method for high-ground-stress soft rock of tunnel

Номер: CN116357347A
Автор: WU YIFEI, LIN ZHI, JIANG ENGUI, YANG HONGYUN, HE HUCHENG, WANG ZIHAN, YUAN LEI
Принадлежит:

The invention belongs to the technical field of tunnels and underground engineering, and particularly relates to a tunnel high ground stress soft rock large deformation surrounding rock control method. Comprising the following steps that firstly, after a tunnel is excavated and slag is discharged, a surface layer support of an excavation branch is constructed in time; 2, determining high ground stress by using a borehole stressometer; 3, in a hard rock area above the measured high-crustal-stress soft rock area, a high-pretightening-force anchor cable is applied to suspend a surface layer hard rock acting on the soft rock in a deeper layer hard rock; and fourthly, prestressed anchor rods are applied to the soft rock, and the anchoring ends are connected through W-shaped steel strips to form a whole. According to the method, on a high ground stress section, the hard rock acting on the soft rock is suspended in the deeper hard rock through the high-pretightening-force anchor cable, the external ...

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Номер записи: 25
23-06-2023 дата публикации

Rotatable hydraulic device and hydraulic creeping formwork device

Номер: CN116289600A
Автор: YAO GUOWEN, WU YIFEI, LONG HONG, JIANG ENGUI, HE XUANBO, ZHU YUANDONG
Принадлежит:

The invention discloses a rotatable hydraulic device and a hydraulic creeping formwork device, and particularly relates to the technical field of creeping formwork equipment. Comprising a fixed cavity and a movable cavity, a first piston rod is arranged on the fixed cavity, a sliding cavity is formed in the fixed cavity, and a first electromagnet is arranged in the sliding cavity; the movable cavity is provided with a second piston rod, the free ends of the first piston rod and the second piston rod which are close to each other are jointly provided with magnets with the same magnetism, any first piston rod or second piston rod far away from one end of the fixed cavity or the movable cavity is connected with a driver, and the movable cavity is provided with arc-shaped sliding plates which are symmetrically distributed; the two sliding plates are the same as the circle center of the sliding cavity, the free end of each sliding plate is provided with a second electromagnet, each second electromagnet ...

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Номер записи: 26
23-06-2023 дата публикации

Multi-element semantic segmentation method for traffic road surface

Номер: CN116310345A
Автор: WANG HAI, ZHANG GUIRONG, CAI YINGFENG, WU YIFEI, CHEN LONG, LI YICHENG, LIU QINGCHAO
Принадлежит:

The invention discloses a multi-element semantic segmentation method for a traffic road surface. The method comprises the following steps: acquiring a target picture set; each target picture in the target picture set comprises a drivable area, a lane line and a road traffic sign; labeling the target pictures of the target picture set, and dividing the labeled target picture set into a training set and a test set; constructing a real-time semantic segmentation network model; training the real-time semantic segmentation network model by using the training set to obtain a trained real-time semantic segmentation network model; and testing the test set by using the trained real-time semantic segmentation network model to obtain a semantic segmentation result of the traffic pavement. According to the method, drivable area segmentation, lane line detection and road surface traffic sign detection can be integrated into the same real-time semantic segmentation network model for processing at the ...

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Номер записи: 27
27-06-2023 дата публикации

Composite filler for sewage denitrification and preparation method thereof

Номер: CN116332368A
Автор: WANG XIN, TANG JIANGWU, SUN HONG, YAO XIAOHONG, SHEN QI, WU YIFEI
Принадлежит:

According to the composite filler for the sewage denitrification system and the preparation method of the composite filler, wood chips are treated through steam explosion, so that the specific surface area is enlarged, a plurality of gaps suitable for growth of microorganisms are generated, meanwhile, the structural strength is reserved, an external aerobic and internal anaerobic microenvironment is formed, and immobilized microorganisms with a slow release effect are matched, so that the composite filler is prepared. The composite filler is used as a reactor composite filler, is suitable for different denitrification systems, can quickly, stably and enduringly form denitrification dominant flora, improves the sewage denitrification efficiency, and improves the stability of the system. The composite filler provided by the invention is low in cost, high in biological affinity, efficient, easy to use, durable, stable and suitable for large-scale application.

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Номер записи: 28
28-07-2023 дата публикации

Self-compacting concrete and preparation method thereof

Номер: CN116496040A
Автор: WU YIFEI, LYU JIWEI, SONG HUIYAN, GAO SHUANGSHUANG, ZHAO SHAOFEI
Принадлежит:

The invention discloses machine-made sand self-compacting concrete and a preparation method thereof.The machine-made sand self-compacting concrete is prepared from, by weight, 700 parts to 800 parts of gravel, 700 parts to 800 parts of machine-made sand, 665 parts to 695 parts of cement, 165 parts to 185 parts of fly ash, 470 parts to 500 parts of water-quenched copper slag, 400 parts to 420 parts of water, 9 parts to 10 parts of water reducing agents and 0 to 2 parts of tackifiers; the content of silicon dioxide is 29-37%, the content of ferrous oxide is 41-54%, the apparent density is 3470 kg/m < 3 >, the apparent density of the self-compacting concrete is not lower than 2200 kg/m < 3 >, and the strength is not lower than 50 MPa. The preparation method is simple in process and few in raw material variety, and the prepared machine-made sand self-compacting concrete can have good working performance and mechanical performance and is convenient to transport and pump for construction.

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Номер записи: 29
14-07-2023 дата публикации

Decision support-oriented comprehensive evaluation method for automatic driving target detection algorithm

Номер: CN116434193A
Автор: WANG HAI, ZHANG GUIRONG, CAI YINGFENG, WU YIFEI, CHEN LONG, LI YICHENG, LIU QINGCHAO
Принадлежит:

The invention discloses a decision support-oriented comprehensive evaluation method for an automatic driving target detection algorithm. The method comprises the following steps of: obtaining a target detection data set; establishing a factor set according to the target detection data set; wherein the factor set comprises a distance, an orientation and a category; establishing an evaluation set according to the factor set; wherein the evaluation set comprises a distance factor evaluation set, an orientation factor evaluation set and a category factor evaluation set; setting each evaluation set and the weight of each evaluation grade in each evaluation set; and according to each evaluation set, each evaluation grade in each evaluation set and the corresponding weight, carrying out comprehensive evaluation on the automatic driving target detection algorithm. According to the invention, the weight of the distance factor between the target object and the current vehicle, the weight of the azimuth ...

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Номер записи: 30
02-06-2023 дата публикации

Advertisement display device capable of carrying out VR interaction according to shopping mall region division

Номер: CN116204067A
Автор: WU YIFEI, WU GANG, QIN LING
Принадлежит:

An advertisement display device capable of carrying out VR interaction according to shopping mall area division comprises a map navigation device and a VR interaction device, the map navigation device comprises a map navigation platform, a 3D scene construction module and a positioning navigation module, a touch screen is arranged on the map navigation platform, and the 3D scene construction module and the positioning navigation module are both arranged in the map navigation platform; the VR interaction device comprises a display mechanism, a VR display module and VR virtual experience glasses, and the display mechanism comprises a plurality of display screens; the device further comprises a storage mechanism, the storage mechanism comprises a plurality of storage grids, a two-dimensional code and a portrait recognition module, and storage covers are arranged on the storage grids. A map navigation device and a VR interaction device are arranged, so that integrated navigation, real-time ...

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Номер записи: 31
07-07-2023 дата публикации

Self-balancing deck crane and limiting device

Номер: CN116395582A
Автор: YAO GUOWEN, HUANG NING, HE XUANBO, WU YIFEI, WEI LEI, JIANG ENGUI, QIN TAO, ZHU YUANDONG
Принадлежит:

The invention discloses a self-balancing deck crane and a limiting device, and particularly relates to the field of cranes. Comprising a first hydraulic oil cavity and a second hydraulic oil cavity, the first hydraulic oil cavity is connected with a crane body, the first hydraulic oil cavity is slidably and hermetically connected with a first hydraulic rod and a second hydraulic rod, and the second hydraulic oil cavity is slidably and hermetically connected with a third hydraulic rod and a fourth hydraulic rod; pawls are rotationally connected to the fourth hydraulic rod and the second hydraulic rod, the two pawls can only rotate independently and rotate reversely, a ratchet wheel matched with the pawls is connected between the two pawls, a rotating shaft rotationally connected to the first hydraulic oil cavity is arranged in the center of the ratchet wheel in a penetrating mode, and a rotating disc located outside the ratchet wheel is further arranged on the rotating shaft. And the turntable ...

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Номер записи: 32
27-06-2023 дата публикации

Elastic support and exciter

Номер: CN116345835A
Автор: DONG YINGTAO, TAO HONGZHONG, WU YIFEI
Принадлежит:

The invention relates to the technical field of exciters, in particular to an elastic support and an exciter, and the elastic support comprises a metal elastic sheet framework which is of a sheet structure and corresponds to the elastic support in shape; the thermoplastic bracket is arranged outside the metal elastic sheet framework and is used for coating the metal elastic sheet framework; wherein the thermoplastic support and the metal elastic sheet framework are integrally formed through injection molding, and the metal elastic sheet framework at least partially protrudes out of the thermoplastic support and is used for being fixedly connected with a stator assembly. According to the invention, the elastic bracket has a rigid characteristic, is not easy to age and deform after being used for a long time, and can well maintain the original performance; the elastic support has the damping characteristic of a traditional nylon support, can rapidly stop vibration after an electric signal ...

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Номер записи: 33
23-06-2023 дата публикации

Bridge erecting machine with dynamic balancing function

Номер: CN116289599A
Автор: YAO GUOWEN, KONG GUOYING, HE XUANBO, WU YIFEI, LU JIANGSHAN, HUANG NING, LIU WENPENG, ZHU YUANDONG
Принадлежит:

The invention discloses a bridge erecting machine with a dynamic balancing function, and particularly relates to the technical field of bridge erecting devices. Comprising a main beam, a middle support and a rear-end support, the main beam is slidably connected with a crane car, the middle support is arranged in the middle of the main beam, the rear-end support is arranged on the rear side of the main beam, driving cars are installed at the bottoms of the middle support and the rear-end support, the middle support and the rear-end support are connected to the main beam, and the crane car is arranged on the main beam. The main beam is further provided with a dynamic adjusting mechanism capable of providing different reverse supporting force according to the fact that the beam body is located at different hoisting nodes. According to the technical scheme, the problem that the overall stability is influenced when the bridge girder erection machine hoists a girder body is solved, and the influence ...

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Номер записи: 34
23-05-2023 дата публикации

Self-compacting lightweight concrete based on modified rubber and preparation method thereof

Номер: CN116143469A
Автор: SONG HUIYAN, ZHU MINTAO, GAO SHUANGSHUANG, NI DAYOU, LYU JIWEI, WU YIFEI
Принадлежит:

The invention relates to self-compacting lightweight concrete based on modified rubber and a preparation method of the self-compacting lightweight concrete. The concrete is prepared from, by weight, 450-500 parts of cement, 60-80 parts of mineral powder, 40-50 parts of microbeads, 40-50 parts of fly ash, 50-60 parts of silica fume, 550-700 parts of river sand, 0-130 parts of rubber particles, 470-540 parts of ceramsite, 140-160 parts of water, 50-120 parts of steel fibers, 16-20 parts of a water reducing agent and 0-1 part of a thickening agent. The rubber particles are modified rubber particles, and the modification mode of the rubber particles is that the rubber particles are soaked in a polyvinyl acetate modifier solution, and the rubber particles are aired and stored after being fully soaked in the modifier solution. The self-compacting lightweight concrete based on the modified rubber has the advantages of light weight, high strength, high toughness, crack resistance, proper viscosity ...

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Номер записи: 35
14-07-2023 дата публикации

High-frequency driving mechanism and valveless piezoelectric pump

Номер: CN116428162A
Автор: HE XIYUE, TAO HONGZHONG, WU YIFEI
Принадлежит:

The invention relates to the technical field of piezoelectric pumps, in particular to a high-frequency driving mechanism and a valveless piezoelectric pump, the high-frequency driving mechanism comprises a piezoelectric ceramic layer and a diaphragm layer, the piezoelectric ceramic layer is fixedly connected with one side of the diaphragm layer, and the other side of the diaphragm layer and a valve body form a pump cavity; the piezoelectric ceramic layer is driven by high frequency, so that a wave structure is generated when the diaphragm layer deforms, and the wave structure comprises wave crests and wave troughs; wherein the distance between the adjacent wave crests and wave troughs is smaller than the distance between a fluid inlet channel and a fluid outlet channel in a pump cavity, the wave troughs make contact with the valve body to generate sealing, non-return is conducted on fluid, and the fluid is transferred from the inlet channel to the outlet channel along with movement of the ...

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Номер записи: 36
23-06-2023 дата публикации

Pump-driven heat dissipation assembly

Номер: CN116321945A
Автор: HE XIYUE, TAO HONGZHONG, WU YIFEI
Принадлежит:

The invention relates to the technical field of heat dissipation structures, in particular to a pump drive heat dissipation assembly which comprises an upper circuit board, an upper cooling plate, a lower cooling plate and a lower circuit board which are sequentially attached to one another from top to bottom. The plurality of electronic elements are mounted on the top surface of the upper circuit board and the bottom surface of the lower circuit board; the upper cooling plate is provided with a plurality of first flow path areas and first solid areas, and each first flow path area is provided with a first launder group; the lower cooling plate is provided with a plurality of second flow path areas aligned with the first solid areas and second solid areas aligned with the first flow path areas, and each second flow path area is provided with a second flow groove group; all the first launder groups and the second launder groups are spliced to form a complete flow path; the upper circuit ...

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Номер записи: 37
12-09-2017 дата публикации

Immobilized probiotics Leaven and its preparation method

Номер: CN0104894098B
Автор: 柳永, 姚晓红, 汤江武, 陈平华, 王新, 孙宏, 吴逸飞
Принадлежит:

... 本发明提供种固定化益生菌发酵剂及其制备方法，其特征在于该发酵试剂包括：菌剂为干酪乳杆菌、酿酒酵母和黑曲霉，固定化载体为琼脂、海藻酸钠、魔芋粉、黄豆粉和硅藻土。该固定化益生菌发酵剂可反复多次使用；该固定化益生菌发酵剂制备方法简单，可重复利用次数高，载体强度高、透水性佳、菌剂活性高、产活性物质丰富，在发酵食品和饲用微生物制剂生产上极具应用潜力。 ...

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Номер записи: 38
06-06-2023 дата публикации

Miniature electromagnetic impact linear motor

Номер: CN116231999A
Автор: TAO HONGZHONG, DONG YINGTAO, WU YIFEI
Принадлежит:

The invention relates to the technical field of vibration motors, in particular to a miniature electromagnetic impact linear motor, which comprises a shell and a vibration assembly, a linear motor, a linear motor, an electromagnetic impact linear motor and an electromagnetic impact linear motor, which are arranged in the shell, the first magnetic steel and the second magnetic steel are arranged at the two ends of the vibration assembly respectively and fixedly arranged on the inner wall of the shell respectively; the coil is fixedly arranged in the shell and arranged outside the vibration assembly in a sleeving mode. Wherein the first magnetic steel and the second magnetic steel are different in magnetic force and different in distance from the vibration assembly, the coil is powered on to drive the vibration assembly to move, and the first magnetic steel and the second magnetic steel reset the vibration assembly. According to the invention, the vibration assembly is reset through the first ...

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Номер записи: 39