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52results about How to "Reduce overflow rate" patented technology

Multi-channel power distribution method driven by sustainable transmission demand in energy collecting wireless network

ActiveCN108601076AMeet sustainable transmission needsPower maximizationPower managementWireless mesh networkSystem capacity
The invention discloses a multi-channel power distribution method driven by a sustainable transmission demand in an energy collecting wireless network. The method comprises the following steps: 1) setting a data queue index ThetaD and an inversion energy queue index ThetaE according to the sustainable transmission demand, and initializing system parameters; 2) entering a transmission period, acquiring electric quantity information and limiting the total transmission power maximum value Mumax based on state information sequence of N channels; 3) solving the optimal total transmission power Mu*and like; 4) distributing the optimal transmission power as shown in description of each channel, and transmitting formula as shown in description paths of independent data flows to a receiver; 5) updating Lagrangian multiplier Lambda; and 6) entering the next transmission period, and repeating the steps 2) to 5) until the transmission is finished. The multi-channel power distribution method disclosed by the invention is suitable for cache capacity limited equipment in the energy collecting wireless communication system, and the cache capacity limitation of a transmitter and a battery interruption probability limitation under the energy collection are taken into consideration at the same, so that the power self-adaptive distribution scheme of the system capacity is maximized in the premiseof ensuring that the cache overflow probability and the battery interruption probability satisfy the sustainable transmission demand.
Owner:XI AN JIAOTONG UNIV

Window provided with rain isolating device

The invention discloses a window provided with a rain isolating device. Due to the fact that when opening windows, residents often forget to close the windows, on rainy days, rainwater is prone to being blown into indoor spaces, and adverse effects are caused. The window comprises a window frame; a window opening is formed in the window frame, and sashes used for opening and closing the window opening are rotationally or slidably connected to the window frame; a cloth rolling-up roll is rotationally erected on one side of the window frame, and a rain sheltering cloth is wound on the peripheryof the cloth rolling-up roll; the cloth rolling-up roll is located above the window opening, and a mounting rod is further arranged on one side of the window frame; a limiting assembly and a rain collecting lower groove are further formed in one side of the window frame; the rain collecting lower groove is located below the window opening, and the limiting assembly comprises a rain collecting upper groove, a valve block, a rain collecting barrel and a tied rope; and the rain collecting barrel is hung below the rain collecting upper groove. When outdoor rain is collected in the rain collectingupper groove and converged in the rain collecting barrel, the rain collecting barrel falls and pulls the valve block to release supporting for the end of the mounting rod, then the rain sheltering cloth is driven by the mounting rod to descend till the mounting rod falls into the rain collecting lower groove, and the rain sheltering cloth shelters the window opening to prevent the rain from beingdirectly blown into the indoor spaces and then influencing the indoor environments.
Owner:浙江艺冠装饰工程有限公司

Intelligent observation and control system for machine room

The invention discloses an intelligent observation and control system for a machine room. The intelligent observation and control system for the machine room comprises a host, monitoring sensors, monitoring data communication lines and a client, wherein the host mainly comprises a host box, a main processing chip, a data interface module, a power supply module and a fan; a high-performance power supply processing chip which supports wide voltage input is arranged in the power supply module; the main processing chip is a high-frequency main processing chip of which the accuracy reaches the high precision of two decimal places and the processing capacity is in the range of 40MHZ-72MHZ; the data interface module is connected with a wireless communication terminal, an RS232 (Recommended Standard 232) bus interface, a CAN (Controller Area Network) bus interface, an SPI (Serial Peripheral Interface) bus interface, a TTL (Transistor-Transistor Logic) interface, a USB (Universal Serial Bus) interface, an RS485 (Recommended Standard 485) bus interface and a wired network RJ45 (Registered Jack 45) interface. According to the intelligent observation and control system for the machine room, a multi-communication mechanism is adopted; multiple communication ways can be used at the same time; the data processing precision of the system is high; the data processing efficiency is high; the wide voltage input is supported; the system supports multi-way equipment monitoring and multi-way control functions, and is high in integration level.
Owner:HANGZHOU JUQI INFORMATION TECH CO LTD

Beneficiation process of skarn type magnetite containing copper and gold

The invention discloses a beneficiation process of skarn type magnetite containing copper and gold. The beneficiation process of the skarn type magnetite containing copper and gold comprises the following steps that firstly, the dimension of ores is made to reach less than 12mm through three-stage closed-circuit crushing, sorting is conducted through a permanent magnet wet magnetic separator, magnetic separation concentrates directly enter a ball mill, and magnetic separation tailings enter a linear vibrating screen to be screened; secondly, bulk flotation is performed after ore grinding to obtain copper-sulfur bulk concentrates, and the copper-sulfur bulk concentrates are subjected to copper-sulfur separation to obtain qualified copper concentrates and sulfur concentrates; and thirdly, the bulk flotation tailings enter a one-roughing two-concentration one-scavenging magnetic separation process to obtain qualified iron ore concentrate products. According to the beneficiation process ofthe skarn type magnetite containing copper and gold, after the ores are crushed, special metal distribution with a low copper grade in non-magnetic ores in coarse fraction is fully utilized, a pre-selection process before grinding is added, discarded waste coarse particles can be sold as building materials to generate economic benefits, and meanwhile, the grinding and separation cost and the tailing treatment cost of the discarded waste coarse particles are reduced; and fine-fraction materials in the non-magnetic materials do not enter the ball mill any more.
Owner:安徽太平矿业有限公司

Multi-beam reflecting surface antenna taking circularly-polarized high-gain resonant antenna as feed source

The invention discloses a multi-beam reflecting surface antenna taking a high-gain circularly-polarized resonant cavity antenna as a feed source, which comprises a rotating parabolic reflecting surface (1), wherein the circularly-polarized high-gain resonant cavity antenna is placed on a focal plane of the rotating parabolic reflecting surface as the feed source and is fixed by a bracket (5). The circularly-polarized high-gain resonant antenna serving as the feed source is composed of a linear polarization-to-circular polarization partially reflecting surface (2), a metal floor (3) and a linear polarization patch array (4). According to the invention, the conversion from linear polarization to circular polarization is realized by utilizing the partially reflecting surface in the resonant cavity antenna, meanwhile, relatively high gain is realized, and the circularly- polarized antenna is arranged on the focal plane of the reflecting paraboloid as a feed source, so that a plurality of wave beams are radiated on the aperture of the reflecting surface. Compared with a traditional multi-beam reflecting surface antenna with multiple horns as feed sources, the multi-beam reflecting surface antenna is simple in feed source structure and more compact in arrangement, and can effectively overcomethe problem of beam coverage.
Owner:SOUTHEAST UNIV

Vacuum smelting furnace and method for preparing high-purity metal ytterbium through one-time continuous reduction distillation

The invention discloses a method for preparing high-purity metal ytterbium through one-time continuous reduction distillation. The method comprises the steps that a vacuum smelting furnace is adopted,a basic raw material pressing block is placed in a metal crucible, and titanium and molybdenum-manufactured double-plug plates are arranged at different temperature transition sections of a distillation system; a combustion chamber of the vacuum smelting furnace is vacuumized to be 10 Pa or below, current delivery and heating are carried out, the heating rate, and thermal insulation time are controlled for heating, metal lanthanum is used for thermal reduction on high-purity ytterbium oxide, a generated metal ytterbium is condensed in a receiver after being distilled by the double-plug plates, a diffusion pump is closed after distillation is completed, argon is filled, and cooling is conducted to a normal temperature according to the set cooling speed and time. The invention further discloses the vacuum smelting furnace. According to the method, stable operation of a distillation process is ensured, the metal ytterbium is low in overflow rate, the rare earth yield is high, impurity entrainment is effectively removed, and lanthanum impurities in the metal ytterbium are greatly reduced.
Owner:BAOTOU RES INST OF RARE EARTHS +1

Sustainable transmission demand-driven multi-channel power allocation method in energy harvesting wireless networks

ActiveCN108601076BMeet sustainable transmission needsPower maximizationPower managementSystem capacityEngineering
The invention discloses a multi-channel power distribution method driven by a sustainable transmission demand in an energy collecting wireless network. The method comprises the following steps: 1) setting a data queue index ThetaD and an inversion energy queue index ThetaE according to the sustainable transmission demand, and initializing system parameters; 2) entering a transmission period, acquiring electric quantity information and limiting the total transmission power maximum value Mumax based on state information sequence of N channels; 3) solving the optimal total transmission power Mu*and like; 4) distributing the optimal transmission power as shown in description of each channel, and transmitting formula as shown in description paths of independent data flows to a receiver; 5) updating Lagrangian multiplier Lambda; and 6) entering the next transmission period, and repeating the steps 2) to 5) until the transmission is finished. The multi-channel power distribution method disclosed by the invention is suitable for cache capacity limited equipment in the energy collecting wireless communication system, and the cache capacity limitation of a transmitter and a battery interruption probability limitation under the energy collection are taken into consideration at the same, so that the power self-adaptive distribution scheme of the system capacity is maximized in the premiseof ensuring that the cache overflow probability and the battery interruption probability satisfy the sustainable transmission demand.
Owner:XI AN JIAOTONG UNIV
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