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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.
18-08-2023 дата публикации

Elevator car safety control method and system based on laser point cloud

Номер: CN116612070A
Автор: LI WEIGANG, TIAN ZHIQIANG
Принадлежит:

The invention relates to an elevator car safety control method and system based on laser point clouds, and the method comprises the steps: obtaining car internal point cloud data collected by a laser radar installed in an elevator car and infrared imaging data collected by an infrared imager installed in the elevator car; denoising the point cloud data in the elevator car by using the infrared imaging data, and then performing segmentation processing to obtain point cloud data of an article sample without vital signs; performing clustering processing on the point cloud sample data of the non-vital-sign article to obtain feature point cloud settlement of the non-vital-sign article; matching the feature point cloud settlement of each non-vital-sign article by using pre-input electric vehicle point cloud feature data, and outputting matching information; and a control instruction is sent to a controller of the elevator car according to the matching information. According to the technical scheme ...

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Номер записи: 1
18-07-2023 дата публикации

Point cloud registration method and system based on normal vector constraint correction

Номер: CN116452648A
Автор: ZHAO YUNTAO, XIE WANQI, LI WEIGANG
Принадлежит:

The invention discloses a point cloud registration method based on normal vector constraint correction, and the method comprises the steps: S1, building a point cloud topological structure based on a source point cloud and a target point cloud; s2, extracting point cloud curved surface features according to the point cloud topological structure; s3, performing constraint correction on normal vectors in the point cloud curved surface features; s4, based on the normal vector after constraint correction, calculating to obtain a point cloud registration optimization model; and S5, based on the point cloud registration optimization model, solving to obtain a relative transformation matrix of the source point cloud and the target point cloud, and carrying out point cloud registration. According to the method, on the basis of normal vector constraint correction, KD-Tree is used for accelerating searching of the nearest point, the point cloud normal vector solving and registering speed is increased ...

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Номер записи: 2
04-04-2023 дата публикации

Secret document authorization and use system

Номер: CN115913560A
Автор: WANG HUI, HUANG JINYANG, ZHANG CHAOYI, LI WEIGANG
Принадлежит:

The invention relates to a confidential document authorization and use system, belongs to the technical field of information security, and solves the problem of potential safety hazards in the offline and take-out use process of the existing confidential document. Comprising a security room and at least one electronic security cabinet, the security room is used for receiving and auditing user registration information and issuing a user identifier, a user private key and a public key matrix to the electronic security cabinet; receiving a confidential piece lending request, setting authorization time and expiration time of the confidential piece, encrypting the confidential piece, the confidential piece number, the authorization time and the expiration time into a ciphertext message, and sending the ciphertext message to the electronic confidential cabinet; the electronic secrecy cabinet is installed on a user terminal and used for uploading user registration information and receiving a user ...

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Номер записи: 3
02-05-2023 дата публикации

Semiconductor test data processing method

Номер: CN116047254A
Автор: GUO SHUAI, FENG WEI, LI WEIGANG, DU QUANGANG
Принадлежит:

The invention provides a semiconductor test data processing method, and relates to the technical field of data processing. The method comprises the following steps: acquiring semiconductor test data; selecting device target test data and epitaxial wafer target test data; constructing a test data matrix by epitaxial wafer test data and device target test data; performing first matrix transformation and second matrix transformation on the matrix; and extracting the sub-matrixes, performing linear fitting on the column vectors to obtain a corresponding relationship, and taking the corresponding relationship as a corresponding relationship between the device target test data and the epitaxial wafer target test data. According to the method, the test data matrix is constructed and matrix transformation is carried out, then the sub-matrix is extracted and linear fitting is carried out on the two column vectors of the sub-matrix, so that the corresponding relation between the device target test ...

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Номер записи: 4
13-08-2021 дата публикации

CPK-based key generation method and device capable of realizing multi-state configuration

Номер: CN113259097A
Автор: DUAN ZHIYONG, LI WEIGANG, LI YIFA, NAN XIANGHAO, 段志勇, 李维刚, 李益发, 南相浩
Принадлежит:

The embodiment of the invention provides a CPK-based key generation method and device capable of realizing multi-state configuration, and belongs to the technical field of information security. The method comprises the steps of generating a self-selected private key factor corresponding to a user identifier, and sending a key application message to a key generation center, wherein the key application message comprises the user identifier; receiving key information returned by the key generation center, wherein the key information comprises a distribution private key factor corresponding to the user identifier; and generating a composite private key corresponding to the user identifier by using the self-selected private key factor and the distribution private key factor. The embodiment of the invention is suitable for encryption, decryption and digital signature processes.

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Номер записи: 5
02-01-2020 дата публикации

CPK-BASED LINUX OPERATING SYSTEM LOGIN AUTHENTICATION METHOD, DEVICE, TERMINAL AND SERVER

Номер: WO2020001455A1
Автор: LI, Weigang
Принадлежит:

The embodiments of the present invention provide a CPK-based Linux operating system login authentication method, a device, a terminal and a server, belonging to the field of computer and information security technology, and solving the problem in the prior art that a network attack obtains an access control right for a Linux operating system. Said method comprises acquiring a user identifier, to be authenticated, of a CPK key device, and sending the user identifier to the Linux server; acquiring a password of the CPK key device, and sending to the CPK key device the password and a time at which a terminal is to be signed; and receiving signature information sent by the CPK key device, and sending the signature information to the Linux server, so that the Linux server performs login authentication by means of the signature information, the signature information comprising a digital signature for said time and the user identifier corresponding to the CPK key device. The embodiments of the ...

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Номер записи: 6
22-08-2023 дата публикации

Exposure control method based on image recognition

Номер: CN116634239A
Автор: LI WEIGANG, WANG YONGQIANG
Принадлежит:

The invention provides an exposure control method based on image recognition, and the method comprises the steps: carrying out the preprocessing of a live video, obtaining a preprocessed live picture image, and recognizing the target content in the live video; converting the live broadcast picture image from an RGB color model to an HSV color model to obtain a brightness value of the HSV color model of the live broadcast picture image; and adjusting the exposure state of the target content in real time according to the brightness value of the HSV color model of the live broadcast picture image. According to the invention, on the basis of accurately detecting and identifying the picture content of the live video, the exposure intensity of a certain target content in the picture can be intelligently adjusted according to the real-time changing content of the live picture, so that the experience of watching the live video by a user is improved.

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Номер записи: 7
04-07-2023 дата публикации

Density board drying method

Номер: CN116379710A
Автор: LI YANG, LI ZHENGMING, LI WEIGANG, WU HUI
Принадлежит:

The invention provides a density board drying method applied to the field of density board drying, according to the density board drying method, moisture absorption particles are evenly scattered on the left side and the right side of a density board from top to bottom, so that the moisture absorption particles and the density board are located in the same relatively closed space for a long time, and by means of the efficient moisture absorption characteristic of the moisture absorption particles, the density board can be dried. Moisture contained in the density board is actively absorbed, the efficiency of discharging the moisture in the density board outwards is effectively improved, moisture absorption particles falling to the bottom of the drying chamber are recycled into the hot air drying box through the material pumping machine b to be dried again, the drying operation of the moisture absorption particles on the density board is circularly carried out, and the density board drying ...

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Номер записи: 8
09-05-2023 дата публикации

Method for producing pillow wrapping base paper by fourdrinier cylinder paper machine

Номер: CN116084202A
Автор: SONG TIANFENG, WANG SHUAI, XU JIADONG, ZHANG TAO, HU XIN, LI WEIGANG
Принадлежит:

The invention belongs to the technical field of papermaking, and particularly relates to a method for producing pillow wrapping base paper through a fourdrinier cylinder paper machine. The method for producing the raw paper of the pillow wrapping paper by the fourdrinier vat paper machine comprises the following production process flows of pulp board conveying, chain board conveying, pulper conveying, discharging pool conveying, pulping machine conveying, pulp forming pool conveying, front pool conveying, pulp flushing pump conveying, pressure screen conveying, pulp flowing box conveying, net part conveying, pressing part conveying, vat conveying, sizing machine conveying, vat assembling, calendering machine conveying, winding part conveying, rewinding, packaging and warehousing. According to the method, the fourdrinier vat paper machine is used for producing the pillow bag body paper, the pulp board ratio is adjusted, the consumption of the needle pulp is increased, the Araba needle pulp ...

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Номер записи: 9
30-05-2023 дата публикации

Method for treating medium-density fiberboard production wastewater

Номер: CN116177820A
Автор: LI YANG, LI ZHENGMING, LI WEIGANG
Принадлежит:

The invention provides a method for treating medium-density fiberboard production wastewater, which is applied to the technical field of industrial wastewater treatment, and comprises the following steps of: marking wastewater generated in prefabrication processes such as chipping, washing and cooking as prefabrication production wastewater, and marking wastewater generated in production and processing processes such as hot grinding, hot pressing and sanding as processing production wastewater; respectively adding a coagulant and standing for separation, heating the processing production wastewater to volatilize organic gases such as formaldehyde, carrying out electrolytic flotation on the two types of wastewater to further separate fine wastes, and meanwhile, fully combusting generated oxygen, organic suspended matters and organic gases to generate carbon dioxide and water; and the carbon dioxide and hydrogen generated by electrolysis are prepared into clean energy or industrial raw materials ...

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Номер записи: 10
30-05-2023 дата публикации

Dynamic construction and key generation method of service identity

Номер: CN116192387A
Автор: LI WEIGANG, WANG HUI, HUANG JINYANG, PAN HAIYONG
Принадлежит:

The invention relates to a dynamic construction and key generation method for a service identity, and belongs to the technical field of information security. The method comprises the following steps: obtaining a first trust chain node of a service context based on hardware environment fingerprint information of a running service and virtual environment fingerprint information of the service; obtaining a second trust chain node of a service context based on the first trust chain node and the operating environment fingerprint information of the service; obtaining a third trust chain node based on the second trust chain node and the service associated fingerprint information of the service; generating a service identity identifier based on the third trust chain node and the identifier information of the service; and generating a service identity identifier key based on the service identity identifier. The unique, uncounterfeited and light-weight identity label is given to the whole system ...

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Номер записи: 11
02-05-2023 дата публикации

Point cloud model-based mutual inductor wiring terminal positioning pose acquisition method and system

Номер: CN116051540A
Автор: ZHAO YUNTAO, HUANG JIE, LI WEIGANG
Принадлежит:

The invention discloses a mutual inductor wiring terminal positioning pose acquisition method and system based on a point cloud model. The method comprises the following steps: S1) collecting data and generating a point cloud model; s2) preprocessing the point cloud model to obtain an ideal target point cloud model; s3) obtaining each surface area of the ideal target point cloud model; s4) solving to obtain normal vector estimation of each surface area; s5) according to the normal vector estimation of each surface area, determining the main axis direction of the binding post bounding box and generating an optimal binding post bounding box; s6, the coordinate posture and the center point space coordinates of the optimal bounding box of the wiring terminal under the robot base coordinate system are calculated, and the positioning posture of the wiring terminal is obtained.The positioning posture of the wiring terminal under different conditions can be effectively obtained, various positioning ...

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Номер записи: 12
04-07-2023 дата публикации

Robot automatic bag opening method and system based on three-dimensional point cloud

Номер: CN116372947A
Автор: XIA CHUN, ZOU SHAOFENG, WANG JUNDONG, LI WEN, YUAN XIAOPING, LI YAONAN, LI WEIGANG, ZHENG YUNHONG, ZHAO YUNTAO, WU CHUNQIAO, JIAN YUANXIANG
Принадлежит:

The invention discloses a robot automatic bag opening method and system based on three-dimensional point cloud. The robot automatic bag opening method comprises the steps that surrounding environment information of a stacking disc is obtained through a 3D camera; each bagged material bag is segmented through point cloud clustering; a compact bounding box is obtained, and the center point position and the posture of each bagged material package are solved through the compact bounding box; the center points of all the bagged material packages are sequenced; connection with the robot is established through a Modbus Tcp communication protocol, and the position and the posture of the center point of the bagged material bag are transmitted to the robot; a grabbing unit at the tail end of the robot sequentially carries out bagged material bag grabbing, bag opening, material pouring, bag removing and resetting, and the operation is repeated till all bagged material bags on the material stacking ...

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Номер записи: 13
22-08-2023 дата публикации

Grape bagging paper produced by fourdrinier vat paper machine and production method thereof

Номер: CN116623469A
Автор: SONG DIANFENG, WANG SHUAI, XU JIADONG, LI WEIGANG, HU XIN, ZHANG TAO
Принадлежит:

The invention belongs to the technical field of papermaking, and particularly relates to grape bagging paper produced by a fourdrinier vat paper machine and a production method of the grape bagging paper. The production process comprises the following steps of: conveying a pulp board, a chain plate, a pulper, a discharging pool, a pulping machine, a pulp forming pool, a machine chest, a slushing pump, a pressure screen, a headbox, a net part, a pressing part, a large cylinder, a sizing machine, a group cylinder, a calender, a coiling part, rewinding, and packaging and warehousing. The production process comprises the following steps: conveying the pulp board, the chain plate, the pulper, the discharging pool, the pulping machine, the pulp forming pool, the machine chest, the slushing pump, the pressure screen and the headbox; the water resistance, hydrophobicity and breakage resistance of the grape bagging paper are improved, and the grape bagging paper can be recycled and is economical ...

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Номер записи: 14
23-06-2023 дата публикации

Deep learning-based pointer instrument automatic reading method and system

Номер: CN116310285A
Автор: XIA ZHENKANG, LI WEIGANG
Принадлежит:

The invention discloses a pointer instrument automatic reading method and system based on deep learning. The method comprises the following steps: S1) obtaining an image of an instrument to be read; s2) performing dial target detection on the instrument image; s3) performing tilt correction on the detected dial plate image; s4) unfolding the corrected dial plate image into a rectangular dial plate image; s5) pointer position detection is carried out based on the rectangular dial plate image; and S6) calculating a reading according to the position of the pointer. The method is suitable for various disc pointer meters with uniform scales, such as a single pointer, double pointers and the like, while a traditional algorithm needs to identify different types of meters respectively; target detection based on deep learning enables an instrument in a complex environment to be detected and read; in addition, the inclination meter in the obtained image can be corrected, the subsequent reading error ...

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Номер записи: 15
02-05-2023 дата публикации

Construction method for newly-built tunnel to cross existing tunnel in close range

Номер: CN116044412A
Автор: BI CONGCONG, DUAN LIUDONG, WU WENPING, XIAO QIANFENG, WANG LEI, ZHAO GUOJUN, LI WEIGANG, WANG JIATAI, LYU LIHUA, WANG QIANG
Принадлежит:

The invention provides a construction method for a newly-built tunnel to cross an existing tunnel in a close range, and relates to the field of tunnel construction. A construction method for a newly-built tunnel to overpass an existing tunnel in a close range comprises the following steps that a reinforcing steel frame is adopted for reinforcing the interior of an existing tunnel hole, and a reinforcing section is the intersection portion of the reinforcing section and the newly-built tunnel; the surrounding rock of the existing tunnel is subjected to grouting reinforcement, sleeve valve pipe grouting reinforcement is adopted to reach the bottom of the lining structure of the newly-built tunnel, and grouting is conducted through an excavation operation platform of the upper half section of the newly-built tunnel; pre-reinforcing piles are arranged behind an existing tunnel lining, and a new tunnel adopts a pile-slab foundation; related projects of an entrance section of the newly-built ...

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Номер записи: 16
02-05-2023 дата публикации

Method for producing water transfer printing body paper by fourdrinier vat paper machine

Номер: CN116043605A
Автор: SONG TIANFENG, XU JIADONG, WANG SHUAI, HU XIN, ZHANG TAO, LI WEIGANG
Принадлежит:

The invention belongs to the technical field of papermaking, and particularly relates to a method for producing water transfer printing body paper through a fourdrinier vat paper machine. The invention relates to a method for producing water transfer printing body paper by a fourdrinier vat paper machine. Comprising the following production process flows: conveying a pulp board, a chain plate, a pulper, a discharging pool, a pulping machine, a pulp forming pool, a machine chest, a slushing pump, a pressure screen, a headbox, a net part, a pressing part, a large cylinder, a sizing machine, a group cylinder, a calender, a coiling part, rewinding, and packaging and warehousing. By optimizing the production process method, the qualified water transfer printing body paper is produced by using a paper machine provided with a fourdrinier vat and a film transfer sizing machine, the requirements of water transfer printing on the surface smoothness and fineness of paper sheets are met, the paper ...

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Номер записи: 17
26-05-2023 дата публикации

Authentication method based on service identity identification key

Номер: CN116170238A
Автор: LI WEIGANG, WANG HUI, HUANG JINYANG, PAN HAIYONG
Принадлежит:

The invention relates to an authentication method based on a service identity identification key, and belongs to the technical field of information security. The method comprises the steps that an interceptor intercepts a calling request of a visitor service to a resource service and checks whether the calling request contains an effective authentication authorization token, and if not, the interceptor redirects the calling request to an authentication center to request service identity authentication; the authentication center sends authentication challenge information to the visitor service; the visitor service generates a signature data packet as a challenge response; and the authentication center verifies the service identity signature in the signature data packet, generates an authorization token after verification is passed, and returns the authorization token to the visitor for service. Wherein the service identity signature is obtained by carrying out digital signature on a service ...

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Номер записи: 18
02-05-2023 дата публикации

Method for producing tipping base paper for cigarette of'bead blasting cigarette 'by using fourdrinier vat and group vat

Номер: CN116043604A
Автор: SONG TIANFENG, WANG SHUAI, JIANG KAIYAN, LI WEIGANG, ZHANG TAO, HU XIN
Принадлежит:

The invention discloses a method for producing tipping base paper for cigarette of'bead blasting cigarette 'by using a fourdrinier vat and a group vat, and belongs to the technical field of papermaking. According to the technical scheme, the production process comprises the following steps: conveying a pulp board, a chain plate, a pulper, a discharging pool, a pulping machine, a pulp forming pool, a machine chest, a slushing pump, a pressurized screen, a headbox, a net part, a pressing part, a large cylinder, a group cylinder, a calender, a coiling part, rewinding, and packaging and warehousing. The invention confirms that the paper machine equipped with the fourdrinier vat and the group vat can produce qualified tipping base paper for the bead blasting cigarette, the air permeability is less than 1.0 mu m/pa. S, microscopic gaps of paper sheets are reduced, the permeation resistance of the paper sheets is improved, and liquid spices and essences are prevented from permeating the paper ...

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Номер записи: 19
02-05-2023 дата публикации

Method for producing straw packaging paper by fourdrinier vat paper machine

Номер: CN116043609A
Автор: SONG TIANFENG, WANG SHUAI, JIANG KAIYAN, ZHANG TAO, LI WEIGANG, HU XIN
Принадлежит:

The invention belongs to the technical field of packaging paper production, and particularly relates to a method for producing straw packaging paper through a fourdrinier vat paper machine. The invention relates to a method for producing straw packaging paper by a fourdrinier vat paper machine, which comprises the following production process flows: a pulp board, chain plate conveying, a pulper, a discharge pool, a pulping machine, a pulp forming pool, a machine chest, a slushing pump, a pressure screen, a headbox, a net part, a pressing part, a vat, a coiling part, rewinding, and packaging and warehousing, wherein the pulp board is conveyed into the chain plate, the pulper, the discharge pool, the pulping machine, the pulp forming pool, the machine chest, the slushing pump, the pressure screen, the headbox, the net part, the pressing part, the vat and the coiling part; by optimizing a production process method, qualified straw packaging paper is produced by using a high-speed paper machine ...

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Номер записи: 20