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1008results about How to "Improve utilization efficiency" patented technology

Intelligent electric energy meter field test device and test method thereof

The invention relates to an intelligent electric energy meter field test device and a test method thereof. The test device comprises a micro controller, a metering unit, a communication interface unit, a memorizer, an input part, a current acquisition channel and a voltage acquisition channel, a clock module and a pulse input unit; wherein the micro controller receives a control instruction of the input part and sends out an operation signal to the communication interface unit, the memorizer, a displaying part and the clock module; the metering unit carries out filtering, amplifying, sampling and digital signal processing on analogue signals transmitted by the current acquisition channel and the voltage acquisition channel, so as to convert the analogue signals into digital signals, and the digital signals are sent to the micro controller; the communication interface unit carries out data communication with an electric energy meter and downloads a user file from a server, and the user file is uploaded to the micro controller, and data of field test is uploaded and recorded into the server. The invention has the advantage that whether all the functions of intelligent electric energy meter are in normal operation or not can be determined by virtue of field test and diagnosis without interruption of power supply, modifying field primary and secondary loops or changing the state of the relay of the electric energy meter.
Owner:SHENYANG INST OF ENG

Unmanned aerial vehicle cruising capacity monitoring system and method

InactiveCN105093130AReduce the incidence of power failure and fall accidentsImprove utilization efficiencyNavigation by speed/acceleration measurementsElectrical testingUnmanned spacecraftBattery energy
The invention discloses an unmanned aerial vehicle cruising capacity monitoring system and method, and belongs to the field of unmanned aerial vehicles. The system comprises an unmanned aerial vehicle and a flight control station, a signal processing module and a data communication module. The unmanned aerial vehicle further comprises a signal input module, a flight control panel and a battery. The signal input module acquires energy consumption information of the unmanned aerial vehicle. The flight control panel acquires battery information and controls flight of the unmanned aerial vehicle. The signal processing module is suitable for calculating cruising capacity of the unmanned aerial vehicle according to the energy consumption information and the battery information. Energy consumption of the unmanned aerial vehicle is analyzed to accurately estimate cruising capacity of the unmanned aerial vehicle, and cruising capacity of the unmanned aerial vehicle is marked by cruising time and/or cruising distance. Meanwhile, influence of environment temperature on battery energy efficiency is also considered so that accuracy of prediction of cruising capacity of the unmanned aerial vehicle is further enhanced.
Owner:杨珊珊

Piezoelectric power generation device based on excitation of fluidic micro oscillator

The invention discloses a piezoelectric power generation device based on the excitation of a fluidic micro oscillator. The device comprises a housing, a bistable fluidic element, a first oscillation cavity, a second oscillation cavity and an output circuit, wherein the first and the second oscillation cavities are symmetrically distributed on the left side and the right side of the bistable fluidic element; diaphragm patches are respectively arranged on the first and the second oscillation cavities; piezoelectric patches are arranged on the diaphragm patches; and a gas inlet of the bistable fluidic element is communicated with a gas exhaust opening of pneumatic equipment. Due to a wall attaching effect of the bistable fluidic element, gas repeatedly circulates in the oscillation cavities on the two sides of the device to form oscillation gas, an oscillation gas flow in the oscillation cavities drives the diaphragm patches on cavity chambers to vibrate, and the vibration of the diaphragm patches drives the piezoelectric patches thereon to vibrate and deform to produce electric charge. By using the device, a waste gas energy resource can be converted into electric energy, power can be supplied to a wireless sensor, the trouble of battery replacement is saved and the energy source utilization efficiency is improved. The device has the advantages of simple structure, energy conservation and environmental friendliness, and is convenient to implement.
Owner:TSINGHUA UNIV

Multifunctional photovoltaic UPS (uninterruptible power supply) system and control method thereof

The invention discloses a multifunctional photovoltaic UPS (uninterruptible power supply) system and a control method thereof. The multifunctional photovoltaic UPS system comprises a photovoltaic battery, a first switch unit, a second switch unit, a third switch unit, a fourth switch unit, a fifth switch unit, a DC (direct current)/DC (direct current) unit, a storage battery, a two-way DC/DC unit, an inverter unit and a controller unit, wherein the controller unit is electrically connected with the first unit switch, the second switch unit, the third switch unit, the fourth switch unit and the fifth switch unit; and the inverter unit, the two-way DC/DC unit and the DC/DC unit are electrically connected with the controller unit respectively. The multifunctional photovoltaic UPS system is used for controlling the on-off of the first unit switch, the second switch unit, the third switch unit, the fourth switch unit and the fifth switch unit through the controller unit and has the functions of UPS, photovoltaic off-grid generation and photovoltaic grid generation, and the controller unit is used for optimizing work modes of the system, improving the utilization efficiency of photovoltaic resources and exerting utility to the greatest extent.
Owner:EAST GRP CO LTD

LBT (Listen Before Talk) mechanism which synchronously takes uplink and downlink into consideration in LAA (Licensed-Assisted Access) system

ActiveCN105636233AFlexible Burst StructureImprove utilization efficiencyWireless communicationTime windowsData transmission
The invention discloses an LBT mechanism which synchronously takes an uplink and a downlink into consideration in an LAA system. The mechanism comprises following steps: designing uplink and downlink burst structures, designing a CCA (Clear Channel Assessment) detection time window, designing a channel reserved signal and designing a channel access process, wherein with respect to the step of designing the uplink and downlink burst structures, a piece of UE or an eNB each time can transmit data only in one or several sub-frames in uplink or downlink burst, specifically, it is determined by a channel access moment, the quantity of to-be-transmitted data and the maximum number of sub-frames allowed to be sent; with respect to the step of designing the CCA detection time window, different detection time windows are adopted by the uplink and the downlink; with respect to the step of designing the channel reserved signal, the step is only used for the downlink, the channel reserved signal is designed by taking a CRS as the basis according to the symbol cycle of the OFDM; with respect to the step of designing the channel access process, with respect to the uplink, a channel access process with a self-adaptive backspacing function is adopted; and with respect to the downlink, a channel access process without a function is adopted. The scheme of the invention is applicable to various TDD frame structures and can coexist with unauthorized frequency bands in a WIFI system friendly; and moreover, relatively high channel utilization efficiency can be obtained.
Owner:SHANDONG WINSPREAD COMM TECH

Soilless culture nutrient solution as well as preparation method and application thereof

The invention provides a soilless culture nutrient solution for lily as well as a preparation method and application thereof. The nutrient solution consists of macroelements, trace elements and water, wherein the macroelements in every liter of the nutrient solution comprise 6.15-6.25mmol of nitrogen, 0.25-0.35mmol of phosphorus, 1.80-1.90mmol of potassium, 1.20-1.40mmol of calcium and 0.40-0.60mmol of magnesium; and the trace elements in every liter of the nutrient solution comprise 15.00-16.00 mu mol of iron, 45.00-50.00mu mol of boron, 9.00-10.00 mu mol of manganese, 0.75-0.85 mu mol of zinc, 0.25-0.35 mu mol of copper and 0.10-0.30 mu mol of molybdenum. The soilless culture nutrient solution is especially suitable for culturing lily by utilizing a special soilless culture substrate, can meet the nutrition requirement of lily and reduce the applying amount of the nutriment elements, thereby fundamentally solving the phenomenon of great waste in production because of the nutrition excess caused by the fact that culture nutrient solution is not specially for lily for a long term and is just prepared experientially or on the basis of the preparation of nutriment solutions for other crops.
Owner:INST OF VEGETABLE & FLOWERS CHINESE ACAD OF AGRI SCI

Information channel and power combined self-configuration method for APs (Access Points) in wireless local area network

InactiveCN103338504AImprove utilization efficiencyReduce network congestionPower managementNetwork topologiesPower parameterBusiness efficiency
An information channel and power combined self-configuration method for APs (Access Points) in wireless local area network comprises the steps as follows: the area where the APs to be configured are located is selected as a local network, and the local network is divided into a plurality of grids according to practical conditions; each AP sends out a self-configuration request to a server and simultaneously reports the position coordinate of the AP and the scanned frequency spectrum use information of the ambient environment of the AP; the server analyzes the positions and the ambient environments of the APs according to the self-configuration requests of the APs, and allocates information channels and power parameters to the APs to be configured in combination with the use conditions of AP information channels in neighbor cells under the premises of meeting the coverage rate requirement and minimizing same frequency interference, that is, first the signal energy of each grid is estimated according to a path loss empirical model to learn the network coverage condition, and then the information channel and the power parameter eventually configured for each AP is obtained through calculation based on the principle that the energy efficiency ratio is highest, and are sent to the AP to be configured. The method provided by the invention is quick and effective, guarantees the region coverage requirement, avoids same frequency interference to the maximum extent and guarantees that the energy efficiency ratio of the network is highest.
Owner:BEIJING UNIV OF POSTS & TELECOMM

Device for methanol reforming hydrogen production by utilizing waste heat of automobile exhaust gas

The invention discloses a device for methanol reforming hydrogen production by utilizing waste heat of automobile exhaust gas. Adiabatic ceramic wool is added between an inner shell of a reaction main body and an outer shell of the reaction main body; multiple layers of methanol water evaporation layers are stacked on a lower cover plate of the reaction main body, and then reforming reaction layers and combustion reaction layers are alternately stacked; one end of a thermocouple is inserted into the middle-layer reforming reaction layers, and the other end is connected with an electronic control unit by a temperature signal wire; the electronic control unit is connected with a methanol pump, a methanol water solution pump, an air pump, a methanol air flow control solenoid valve and a methanol water solution flow control solenoid valve respectively through circuits; one end of the methanol water solution pump is connected into a methanol water storage tank, and the other end is connected into the methanol water evaporation layers through the methanol water solution flow control solenoid valve; one end of the methanol pump is connected with a methanol storage box, and the other end is connected with the methanol water evaporation layers through the methanol air flow control solenoid valve; an upper cover plate and the lower cover plate are each provided with a plurality of exhaust gas circulation holes. Produced hydrogen is introduced into an engine for mixed combustion with gasoline, and thus the energy utilization efficiency is improved. The device can be mounted on the automobile engine.
Owner:ZHEJIANG UNIV

Accelerator-driven subcritical transmutation reactor core adopting dispersion metal fuel

InactiveCN103093837AGood fuel consumption stabilityImprove utilization efficiencyFuel elementsNuclear energy generationNeutron sourceMinor actinide
The invention relate to an accelerator-driven subcritical transmutation reactor core adopting a dispersion metal fuel. The accelerator-driven subcritical transmutation reactor core sequentially comprises an external neutron source zone, a buffer zone, a fuel zone, an LBE (Lead-Bismuth Eutectic) reflecting layer zone, a stainless steel reflecting layer zone and a shielding layer zone from reactor core center to outside, wherein the fuel zone is divided into 2-4 zones from inside to outside; a plurality of fuel assemblies with the same structure, quantity and size are respectively loaded in each fuel zone; the fuel assemblies are composed of a plurality of triangularly-arranged fuel rods; the fuel rods are made from (TRU-10Zr)-Zr dispersion metal; and the Pu contents in the fuel rods of the fuel zones are sequentially increased from inside to outside. According to the invention, the fuel rods in the fuel zones are made from the (TRU-10Zr)-Zr dispersion metal, so that harder neutron spectrum is provided for the reactor core, the transmutation of minor actinides (MA) is benefited and the annual transmutation rate is up to about 15% and higher than the annual transmutation rate 10% of a Japanese scheme; and the fuel zone of the reactor core is divided, the Pu contents of the zones are at a certain proportion, the power peak density is low and the maximum value is not more than 450W/cm<3> under the condition that the safety is guaranteed.
Owner:XI AN JIAOTONG UNIV

Variable-expansion intersection lane

The invention discloses a variable-expansion intersection lane. An open mouth is arranged at a place 30 to 100 m away from an intersection on a center line or halving zone and used as a exclusive lane for left-turn vehicles, and meanwhile, all the lanes at outlets of a same direction except an outermost lane are changed as left-turn waiting zones; an original exclusive left-turn entrance lane is provided with a left-turn stop line, and the front part of the original exclusive left-turn entrance lane is changed into a direct entrance lane; an LED display board is arranged at each driving direction of the intersection to control left-turn vehicles to enter or not to enter into the left-turn waiting zones; induction coils are buried beneath the left-turn waiting zones for communication connection with traffic indication signal lamps. According to the invention, exit lanes unoccupied in a short period of time are ingeniously used as temporary left-turn lanes, so the number of lanes for driving-out of vehicles from the intersection is increased in the period when a green light is on, so utilization efficiency during the period when the green light is on can be improved without great reconstruction of civil works, traffic capacity of the signalized intersection is enhanced, and traffic jam at the signalized intersection is effectively improved.
Owner:上海济安交通工程咨询有限公司

Aquaculture sewage treatment method

The invention discloses an aquaculture sewage treatment method, which specifically comprises the following steps of: firstly, feeding an microbial agent into sewage discharged from a culture pool, then introducing the sewage into a flocculation basin, and continuously feeding flocculants under the condition of continuous air aeration, wherein the hydraulic retention time is 15-30 minutes; and introducing the sewage subjected to air aeration and flocculation treatment into a membrane device under the action of a constant-flow pump to complete filter treatment, directly discharging permeated clear water or returning the permeated clear water to the culture pool for reutilization, and returning concentrated sewage to the flocculation basin for continuous treatment or directly discharging partial of the concentrated sewage. According to the aquaculture sewage treatment method, a biological treatment technology, a flocculation technology and a modern membrane filtration technology are organically combined, so that water quality is guaranteed, the production efficiency is increased, the production cost is greatly reduced, the advantages of simple process, stable system, small occupancy, low operation cost and the like are achieved, and bacteria and suspended matters in the sewage can be removed, and the purpose of safety recycling is achieved.
Owner:JIMEI UNIV
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