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3007results about How to "Efficiency" patented technology

Zero-discharge treatment method of salt-containing organic wastewater

The invention provides a zero-discharge treatment method of salt-containing organic wastewater. The method comprises the following steps that biochemical treatment and filtering treatment are performed on wastewater; then, membrane concentration is performed; pure-water-producing high-organic-matter-content membrane concentration concentrated water and optional low-organic-matter-content membrane concentration concentrated water are obtained; the high-organic-matter-content membrane concentration concentrated water is used for high-grade oxidation treatment; high-grade oxidation produced water is used for regulation treatment to obtain high-grade oxidation outlet water; the obtained high-grade oxidation outlet water is subjected to evaporation treatment; or the obtained high-grade oxidation outlet water and the low-organic-matter-content membrane concentration concentrated water are mixed under the condition that the low-organic-matter-content membrane concentration concentrated water exists in the step, and then, the evaporation treatment is carried out; external discharge concentration liquid of an evaporator and / or high-salt-content high-organic-matter-content wastewater discharged during the tank brushing of the evaporator are conveyed back into a high-grade oxidation treatment unit; after the liquid is mixed with the high-organic-matter-content membrane concentration concentrated water, the high-grade oxidation treatment is carried out. The wastewater treatment method is stable and reliable; the long-period and stable operation of an evaporation system can be ensured; the zero discharge of the industrial wastewater is realized.
Owner:DATANG INT CHEM TECH RESINST

Intelligent vehicle traveling speed and time predication method based on macro city traffic flow

The invention proposes an intelligent vehicle traveling speed and time predication method based on a macro city traffic flow. Firstly the road and environment related variables in a driving environment are selected and quantified, secondly a GIS database of intelligent vehicle autonomous driving is established, thirdly combined with a regression analysis method, the combination rule of the key variables in the driving environment is provided, and the multiple-element linear relationship of intelligent vehicle driving speed and road design parameter, traffic condition and real-time road condition in a city traffic network is obtained, fourthly, based on the VLM model of the macro city traffic flow theory of a trapezoid density-flow basic pattern, the dynamic and stable characteristics of the VLM model of a road are obtained, and the speed and time evaluation function of the macro city traffic flow is given, and finally combined with the multiple-element linear vehicle speed model of the road in different vehicle flow density and initial states, the driving speed constraint equation of an intelligent vehicle in a city road network is obtained, and the optimal driving speed and travel time which satisfy a target function are obtained.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Autonomous parking system and method based on multi-vision inertial navigation integration

ActiveCN107600067AAccurate real-time location informationStable real-time location informationGeolocationEngineering
The invention discloses an autonomous parking system based on multi-vision inertial navigation integration. The autonomous parking system comprises a binocular vision SLAM module, a round looking parking detection module and a decision and control module, wherein the binocular vision SLAM module is used for generating a parking lot simulating map by acquired parking lot images through the multi-vision inertial navigation integration, obtaining real-time positioning information of a vehicle under a coordinate system of the parking lot simulating map, and transmitting the real-time positioning information to the decision and control module; the round looking parking detection module is used for acquiring current position data of the vehicle for current environmental distinction detection, and transmitting the testing result to the decision and control module; and the decision and control module is used for making a vehicle autonomous parking strategy according to the received geographicpositioning information of the vehicle in the parking lot simulating map and the current environmental distinction parameters. The invention also discloses an autonomous parking method based on the multi-vision inertial navigation integration. The autonomous parking method is used for realizing the autonomous parking system.
Owner:SUN YAT SEN UNIV

Process for synthesizing natural gas by methanation of coal synthesis gas

The invention discloses a process for synthesizing natural gas by methanation of coal synthesis gas, which comprises the following steps of: dispersing a fresh methanation catalyst into an inert liquid medium, delivering the medium into a slurry bed methanation reactor to perform reduction, performing methanation reaction on the transformed methanation raw gas after the reduction is finished, delivering the tail gas to a gas-liquid separator I, discharging the slurry liquid component and the catalyst in the tail gas from the bottom of the gas-liquid separator I, discharging the gas phase in the tail gas from the top of the gas-liquid separator I, delivering partial slurry liquid component containing the catalyst into a gas-liquid separator II, discharging the gas phase from the top of thegas-liquid separator II, merging the gas phases discharged from the tops of the gas-liquid separators I and II, cooling and purifying the gas phases to obtain synthesized natural gas, discharging theslurry liquid component containing the catalyst from the bottom of the gas-liquid separator II, merging the slurry liquid component discharged from the bottom of the gas-liquid separator II and the slurry liquid component and the catalyst discharged from the bottom of the gas-liquid separator I, discharging 1 to 5 percent of the weight sum of the slurry liquid component and the catalyst separatedfrom the two gas-liquid separators, and performing methanation reaction on the cooled rest slurry liquid component and catalyst and the fresh methanation catalyst dispersed into the insert liquid medium together. The process has the advantages of low power consumption and low equipment investment, and is easy to operate.
Owner:SEDIN ENG +1

Bounding box and space partitioning-based virtual object collision detection method

The invention provides a bounding box and space partitioning-based virtual object collision detection method. The method includes the following steps that: virtual object collision pre-detection is performed on two irregular virtual objects; region segmentation is performed on a region to be detected; intersection testing is performed in the sub regions segmented from the region to be detected; virtual object collision detection is performed by using a point vector set representing a moving virtual object and a triangular surface representing a virtual object which does not require assembly at present; and if the virtual objects intersect with each other, the virtual objects collide with each other, otherwise, the virtual objects do not collide with each other. According to the bounding box and space partitioning-based virtual object collision detection method of the invention, a collision detection range of a space is narrowed through using the spatial correlation of the virtual objects, so that time consumption can be reduced, and at the same time, the detection efficiency of the method and the geometric accuracy of collision detection are greatly improved; a bounding box is reduced into the triangular surface and the points, so that the misjudgment of the collision detection can be decreased; and a collision detection process is refined to the interference between the triangular surface and the points, and separate detection is carried out, and therefore, detection efficiency can be greatly improved.
Owner:NORTHEASTERN UNIV

Direct-current micro-grid system and control method thereof

The invention relates to a direct-current micro-grid system and a control method thereof. The direct-current micro-grid system comprises a direct-current power distribution circuit, a bi-directional AC/DC (alternating current/direct current) rectifying/inverting device, a distributed energy generating device, an energy storing device, direct-current loads, alternating-current loads, a urban microclimate interactive system, a clock interactive system, a micro-grid control system and micro-grid protecting devices, an upper scheduling management system is arranged in the micro-grid control system so as to form layered management for micro-grid energy. The direct-current micro-grid control method includes: entering a grid connection mode or an island model according to working state of a large power grid, and determining the working states of the energy storing device and the distributed energy generating device according to information of the urban microclimate interactive system and the clock interactive system. The direct-current micro-grid system can independently supply power to the alternating-current and the direct-current loads and can be connected with a power grid to generate power according to processed result of urban microclimate interactive information, so that requirements on power supply for users are met, cost is reduced, designing, controlling, operation and maintenance of a micro-grid are benefited, and reliability, economy and efficiency of the micro-grid are effectively improved.
Owner:JIAXING QINGYUAN ELECTRICAL TECH

Rapid intelligent public transport stereo monitoring apparatus and working method thereof

The invention relates to a rapid and intelligent public transportation three-dimensional monitoring and controlling device and an operating method thereof, which belongs to the technical field of public transportation. The device comprises a monitoring and controlling dispatching center, a vehicle mobile monitoring and controlling terminal and a platform fixed monitoring and controlling terminal, wherein, the vehicle mobile monitoring and controlling terminal and the platform fixed monitoring and controlling terminal are connected with the monitoring and controlling dispatching center through an Internet and a WiMAX network. The method comprises the following steps: the vehicle mobile monitoring and controlling terminal and the platform fixed monitoring and controlling terminal are set, the video information inside the bus, the video information for the platform environment and the passengers on the platform as well as the relevant GPS information are gathered in a real-time manner and transmitted based on the WiMAX network, and the vehicle mobile monitoring and controlling terminal performs the interactive function of intelligent bus stop announcement and scheduling information at the same time. By using the realized three-dimensional monitoring and controlling and dispatching, not only the security of bus running and the intelligence of bus stop announcement can be enhanced, but also the real-time grasping of the control center to the number of the passengers can be improved, and the allocation of the rapid bus vehicles can be performed according to the passenger flow volume, and the scheme and the support method are provided for the automation, the safety running and the management of the rapid bus system.
Owner:SHANDONG UNIV

Skin laser treatment auxiliary robot and auxiliary method thereof

The invention provides a skin laser treatment auxiliary robot and an auxiliary method thereof. The skin laser treatment auxiliary robot comprises an accurate positioning mobile robot, a therapeutic instrument laser probe, a visual identification and control system, a range finding device and a safety device. The therapeutic instrument laser probe is installed at the front end of the tail position of the mechanical arm of the accurate positioning mobile robot. The range finding device is installed at the side surface of the therapeutic instrument laser probe. The CMOS probe of the visual identification and control system is installed at the other side surface of the therapeutic instrument laser probe. The safety device is installed at the front end of the therapeutic instrument laser probe. The measured value outputted by the range finding device and the sensing signal outputted by the safety device are connected with the input end of the visual identification and control system. Output of the visual identification and control system is connected with and controls the accurate positioning mobile robot. Manual operation on a skin laser therapeutic instrument is replaced by the accurate positioning mobile robot so that the skin laser treatment auxiliary robot and the auxiliary method thereof have advantages of high degree of automation and accurate positioning and movement, and high-curative-effect, high-efficiency, safe and reliable skin laser treatment can be guaranteed.
Owner:康健

Permanent magnetic direct-drive type offshore wind power plant grid-connected system topology structure and control method thereof

The invention discloses a permanent magnetic direct-drive type offshore wind power plant grid-connected system topology structure and a control method thereof. A grid-connected system comprises a DC bus current collection type wind power plant, a wind field network-side converter station, a dual-stage boost transformer, an offshore rectification station, a seabed DC cable, a shore inversion station, a grid-connected side boost transformer and a land power grid which are successively connected, wherein the DC bus current collection type wind power plant employs a DC bus current collection topology structure and comprises multiple groups of wind turbines which are successively connected, a permanent magnetic synchronous generator, a machine-side rectifier and a DC bus for current collection. The control method is that the machine-side rectifier employs dual-closed-loop control of a rotating speed outer loop and a current inner loop, the wind field network-side converter station employs dual-closed-loop control of a voltage outer loop and the current inner loop, the offshore rectification station employs control of fixed AC voltages and fixed frequencies, and the shore inversion station employs dual-closed-loop control of fixed DC voltages and fixed reactive power. According to the invention, multi-machine parallel-connected operation can be realized, the electric energy conversion efficiency is improved, and the grid-connected AC harmonic quantity is reduced.
Owner:HOHAI UNIV

Second-generation identity card-based authentication method and system

The invention provides a second-generation identity card-based authentication method and a second-generation identity card-based authentication system. The method comprises the following steps of: A, reading an image stored in a built-in anti-counterfeiting chip of a second-generation identity card to obtain a first image, and performing image acquisition on the face of a card holder to obtain a third image; B, scanning a photo printed on the surface of the second-generation identity card to obtain a second image; C, judging whether similarity between the first and second images is more than or equal to a first preset threshold or not by utilizing a face recognition technology, executing a step D if the similarity between the first and second images is more than or equal to the first threshold, otherwise outputting authentication failure information; and D, judging whether the similarity between the second and third images is more than or equal to a second preset threshold or not by utilizing the face recognition technology, outputting authentication success information if the similarity between the second and third images is more than or equal to the second threshold, otherwise outputting the authentication failure information. By the method and the system provided by the invention, the reliability and efficiency of authentication can be improved.
Owner:BEIJING SENSELOCK SOFTWARE TECH CO LTD

Method for forwarding data of virtual network router in centralized mode

The invention discloses a method for forwarding the data of a virtual network router in a centralized mode. According to the method for forwarding the data of the virtual network router in the centralized mode, control planes of virtual network router living examples and data planes of the virtual network router living examples are separated, the control planes operate inside the virtual network router living examples and are responsible for routing computation, the data planes are transferred into an inner core of the virtual network router, a data centralized forwarding engine is formed by the data planes of the network router living examples on the bottom layer of virtual network router equipment, forwarding tables of all the virtual network router living examples are organized and compressed into a shared forwarding table by the data centralized forwarding engine, and forwarding of data of all the living examples on a virtual router node is controlled according to the shared forwarding table. The method for forwarding the data of the virtual network router in the centralized mode has the advantages that cost for data forwarding of the virtual network router can be effectively reduced, link-speed forwarding performance of the virtual network router can be achieved, the number of the virtual network router living examples supported by the virtual network router can be increased, and virtual network data forwarding performance is improved.
Owner:TSINGHUA UNIV

Big data-based online analytical processing system and method

The invention discloses a big data-based online analytical processing system and method. The system can be used for carrying out quick multi-dimensional query and analysis on data sets with different scales and levels under a Hadoop environment. A query plan selected through query, planning and estimation comprises MDX query supporting Hive and Hbase precomputation cache mechanism-based multi-dimensional query. According to the system and method, optimization of the MDX query supporting Hive data warehouses on extensible cluster nodes and of the Hbase precomputation cache mechanism-based multi-dimensional query are realized, the low-delay multi-dimensional query requirements of the data sets with different scales and levels are satisfied, and the OLAP multi-dimensional query of different OLAP data organization models under a single data source background is solved. Aiming at the performance optimization problem of Hive multi-dimensional query on large-scale data sets, an Hbase cache-based segmented layered dimensionality-reduction aggregation algorithm is proposed, and the algorithm brings MOLAP for solving the multi-dimensional query calculation of large-scale data into a big data OLAP system, so that the extendibility and effectiveness of the multi-dimensional query of data with different scales and levels under a big data background are greatly enhanced.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Method for construction of PEM (proton exchange membrane) fuel cell performance prediction model

ActiveCN106848351AEfficiencyImprove accuracyFuel cell controlWater volume fractionLiquid water
The invention discloses a method for construction of a PEM (proton exchange membrane) fuel cell performance prediction model. A constructed model comprises a one-dimensional model vertical to a polar plate direction and a 1 plus 1 plus 1 quasi three-dimensional model; the construction of the one-dimensional model vertical to the polar plate direction concretely comprises four steps: determination of cell output voltage, determination of ohmic loss, determination of activation loss, and water management; on the basis that the 1 plus 1 plus 1 quasi three-dimensional model is vertical to the one-dimensional model in the polar plate direction, a direction along a cell flow channel and a ribbed plate direction vertical to the flow channel are added. The mass conservation equation of a reactant and water is solved to obtain average liquid water volume fractions in various layers of the cell and a reactant concentration in a catalyst layer; accordingly, the ohmic loss and the activation loss are determined; working conditions such as electric current density, temperature, the relative humidity of air inflow and the like are adjusted; and the output voltage of the PEM fuel cell in different working conditions can be predicted. The construction of the PEM fuel cell performance prediction model can effectively save the development expenses and shorten the development cycle.
Owner:TIANJIN UNIV

Transmission inspection three-dimensional flight path automatic planning method based on laser point cloud data

The invention relates to the technical field of power grid inspection, in particular to a transmission inspection three-dimensional flight path automatic planning method based on laser point cloud data. The transmission inspection three-dimensional flight path automatic planning method comprises a laser point cloud data system, an analysis module and an unmanned aerial vehicle module. According tothe transmission patrol three-dimensional flight path automatic planning method based on the laser point cloud data, the laser point cloud data system is used as the basis, a ground point and a non-ground point are separated by combining a classification and extraction module, and a flight path of an unmanned aerial vehicle patrol power transmission channel and a tower is planned the basis, so that not only are the technical requirements of unmanned aerial vehicle control personnel reduced, but also accurate tracking and fine polling can be carried out on the line targets, and it is guaranteed that the whole inspection work is carried out smoothly; and the unmanned aerial vehicle inspection flight path module is adopted, so that the unmanned aerial vehicle inspection flight path capable of achieving automatic planning is achieved, potential safety hazards and missed detection in the manual control unmanned plane inspection of the unmanned aerial vehicle can be effectively avoided, andthe safety and the efficiency of electric power patrol are improved.
Owner:云南电网有限责任公司输电分公司
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