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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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Применить Всего найдено 5. Отображено 5.
12-05-2023 дата публикации

Method for improving speed of communication between sensor and substation

Номер: CN116104580A
Автор: ZHANG JINHAO, LIU YAHUI, GUO JIANGTAO, ZHOU DAIYONG, RAO XINGXIN, HUAI LI, LIN YIN, SHAO YAN, HUANG YOUSHENG, HE QINGSONG, HE KUI, ZHANG JIAYI, HU YU, HU LIANG, ZHAO GUANGXU, HUANG QIAN
Принадлежит:

The invention belongs to the field of underground information transmission, and relates to a method for improving the communication speed of sensors and substations, which comprises the following steps of: S1, connecting the substations with a plurality of sensors through mining optical fibers, and enabling the sensors to be in the same parallel level; s2, the substation defines a corresponding special communication time slice according to the communication data length of the sensor; the substation endows the special communication time slices with time slice numbers according to the communication sequence and sends the special communication time slices to all the sensors, so that all the sensors actively send data collected by the sensors in the corresponding special communication time slices according to the time slice numbers; s3, the substations receive the data actively sent by the sensors and record the time slice numbers of the sensors which have sent the data; s4, when the serial ...

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Номер записи: 1
05-05-2023 дата публикации

Method for improving accuracy of UWB positioning data

Номер: CN116068488A
Автор: HU LIANG, ZHANG PENG, LIU YAHUI, WEN XIANPEI, HU YU, HUAI LI, WANG FEI, HUANG YOUSHENG, ZHOU DAIYONG, DAI JIANBO, WEI HUAFENG, ZHANG JIANFENG, ZHENG FANGFEI, HE QINGSONG, ZHAO GUANGXU, GUO JIANGTAO, LIN YIN, REN GAOJIAN, ZHANG JINHAO, LIU HUIJIE
Принадлежит:

The invention relates to a method for improving accuracy of UWB positioning data, and belongs to the technical field of mine accurate positioning. The method specifically comprises the following steps: setting a noise threshold and an empirical medium constant of a positioning receiving end, and simultaneously receiving a positioning signal by a positioning system; judging whether a multipath effect exists in the received signal or not; if the multipath effect exists in the received signal, calculating the probability PT that the direct path is not extracted, and judging whether the direct path is not extracted due to the fact that the noise threshold is set to be too high or not through the PT; the positioning algorithm carries out positioning calculation on the successfully extracted direct path to obtain positioning coordinates (x0, y0, z0); the positioning coordinates (x0, y0, z0) are sent to a Kalman filtering algorithm for filtering, filtering results (xn + 1, yn + 1, zn + 1) are ...

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Номер записи: 2
04-04-2023 дата публикации

Special 5G network communication system for coal mine

Номер: CN115915504A
Автор: HUANG YOUSHENG, LIU CHENG, JIANG HAI, YAN QIHONG, LIU PEI, LIU YAHUI, JIA RUITANG, ZHANG JINHAO, YAN SONG, LIN YIN, HE KUI, DAI JIANBO, SHAO YAN, WANG FEI, HU LIANG, ZHOU DAIYONG, HU YU, WEN XIANPEI, HU YINGJIE, TIAN JUN, WANG BIN, DUAN MING
Принадлежит:

The invention relates to a 5G network communication system special for a coal mine, which belongs to the technical field of 5G wireless communication and comprises a 5G core network server, an IMS (IP Multimedia Subsystem) server, a 50G bearer network, a ground 5G macro station, an underground 5G/4G fusion base station and a mobile terminal, the 5G core network server adopts core network element full-sinking deployment; the IMS server is an all-IP multimedia subsystem and is used for connection management of voice and multimedia services; the 50G bearer network is used for realizing data physical isolation of different services and integrating wired and wireless communication of industrial control, information transmission and 5G wireless communication into a communication network; the ground 5G macro station is divided into two independent physical channels, one channel is dedicated to an operator and bypassed to a mobile operator dedicated line through a mining area 5G core network, and ...

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Номер записи: 3
14-07-2023 дата публикации

System and method for reducing power consumption of coal mine wagon accurate positioning identification card

Номер: CN116437427A
Автор: DAI JIANBO, WANG FEI, LIU YAHUI, GUO JIANGTAO, HU LIANG, TAN KAI, RAO XINGXIN, HUANG YOUSHENG, TIAN JUN, WEN XIANPEI, ZHAO GUANGXU, HE KUI, HU YU, SHAO YAN, REN GAOJIAN, ZHANG JINHAO, MA SHUMIN, ZHOU DAIYONG, LIU FEN, LIN YIN
Принадлежит:

The invention discloses a coal mine wagon accurate positioning identification card power consumption reduction system. The system comprises a positioning base station, a card reader and a wagon identification card. The card reader is arranged on a locomotive head; the wagon identification card comprises an MCU main controller, a motion state detection module, a transmitting power control module and a positioning module gating circuit, wherein the motion state detection module, the transmitting power control module and the positioning module gating circuit are electrically connected with the MCU main controller. The positioning module gating circuit is electrically connected with an RFID positioning module and a UWB positioning module. The motion state detection module detects the motion state of the wagon and sends the motion state to the MCU main controller; the MCU main controller controls the positioning module to gate the circuit according to the movement state of the railway wagon, ...

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Номер записи: 4
07-04-2023 дата публикации

Automatic detection method for local deviation of wall surface based on triangular gridding

Номер: CN115937149A
Автор: LIN ZHOU, WANG WAICHENG, CHEN MIN, CAI YANG, ZHOU ZHIJIE, FU RAO, HU KAIXIN, ZHOU DAIYONG, GUO TONG, HAN DAGUANG
Принадлежит:

The invention relates to a method for automatically detecting local deviation of a wall surface based on triangular gridding, which comprises the following steps of: acquiring three-dimensional laser scanning point cloud data in a front period and a back period, and finishing the triangular gridding of a query point cloud Q based on a Delaunay triangulation theory; the NDT + ICP algorithm is used for registering the point clouds of the two periods, an index is established, and the Euclidean distance Lij between every two point clouds is calculated; setting a threshold value, searching point pairs by screening distances, and querying point clouds of which the distances between the point pairs exceed the threshold value to form a defect point set C; and for the point set C, establishing Delaunay triangulation to segment the point set into small tetrahedrons, for four points of the tetrahedrons, calculating the center coordinates and the volumes Vci of the four points, summarizing the volumes ...

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Номер записи: 5