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1155results about How to "Large coverage area" patented technology
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Distributed antenna system for wireless network systems
ActiveUS20100278530A1Increase capacityLarge coverage areaModulated-carrier systemsWavelength-division multiplex systemsDigital dataTransceiver
A distributed antenna system is provided for communicating with a plurality of base stations. The distributed antenna system includes a system controller and a master unit communicating with at least one of the plurality of base stations. A remote unit communicates over a high data rate media with the master unit and / or a downstream remote unit. Alternatively, the distributed antenna system includes a controller and a digital time / space crosspoint switch controlled by the controller. A digitizing transceiver is in communication with the digital time / space crosspoint switch. The crosspoint switch is configured to transmit and receive digital data through the digitizing transceiver.
Owner:COMMSCOPE TECH LLC
Chat emoticon input method and device
ActiveCN104076944AImprove input efficiencySave time and costSpecial data processing applicationsInput/output processes for data processingUser inputClient-side
The invention discloses a chat emotion input method and device, and relates to the technical field of input methods. The method comprises the following steps: presetting a character sequence and / or a corresponding relation between the character sequence and each emotion; collecting voice chat resource data and emotion resource data of each topic according to the corresponding relation; creating the emotion resource data based on the emotion type by utilizing the voice chat resource data; receiving an input sequence input by a user; analyzing the input sequence according to the corresponding relation; matching the input sequence and the character sequence and / or words or phrase sequence to obtain the emotion of each topic corresponding to the character sequence and / or the words or phrase sequence; sequencing the emotion of each topic, and displaying as an candidate item at a client. With the adoption of the chat emotion input method and device, the emotions of various topics can be conveniently provided to the user while the user inputs, and thus the user emotion input efficiency is raised.
Owner:BEIJING SOGOU TECHNOLOGY DEVELOPMENT CO LTD
Expression input method and device based on semantic understanding
ActiveCN104933113ASave time and costImprove efficiencyNatural language translationTransmissionNatural language processingUser input
Owner:BEIJING SOGOU TECHNOLOGY DEVELOPMENT CO LTD
Method and apparatus for multiplexing hybrid satellite constellations
ActiveUS20180376393A1Large coverage areaLong signal propagation delayError preventionNetwork topologiesSatellite constellationTraffic volume
A method and apparatus for operating a satellite system including different satellites that may belong to different types of satellite constellations. In some implementations, the satellite system may include a LEO satellite constellation and one or more non-LEO satellite constellations that can be used to increase the forward link capacity of the LEO satellite constellation, for example, by allowing an LEO satellite to offload at least some of its forward link traffic to one of the non-LEO satellites. The user terminals can dynamically switch forward link communications between a LEO satellite and a non-LEO satellite while maintaining a return link connection with the LEO satellite.
Owner:QUALCOMM INC
Internet of things gas meter communication system based on NB-IoT communication technology and internet of things gas meter communication method thereof
ActiveCN107390569ARealize remote monitoringWith external network access abilityProgramme controlTransmission systemsKey pressingReal-time clock
The invention discloses an internet of things gas meter communication system based on the NB-IoT communication technology and an internet of things gas meter communication method thereof. The system comprises a master control module, a storage module, an infrared communication module, an alarm module, a power supply detection module, a display module, a metering module, a valve control module, a real-time clock module, a key module and an NB-IoT module. The master control module is simultaneously connected with all other modules. Wireless network data transmission is realized by using the NB-IoT module, the system has the extranet access capacity, remote monitoring of the gas meter metering, valve and meter state data can be realized and the objectives of remote meter reading, tiered gas price real-time adjustment, remote valve control and big data collection and analysis can be realized without manual visiting for meter reading.
Owner:GOLDCARD HIGH TECH
Multifunctional all-terrain bio-robot
InactiveCN103273982ARealize remote monitoringRealization of two-way voice communicationVehiclesTerrainMobile phone
The invention discloses a multifunctional all-terrain bio-robot which belongs to bio-robots. The multifunctional all-terrain bio-robot achieves the functions of terrain recognition, all-terrain movement, movable surveillance, remote monitoring, bi-directional voice communication, real-time video recording, wireless intelligent home appliance management and wireless alarm. A wireless network card arranged in the robot is connected with a household router, alternatively, access can be achieved on a far-end intelligent mobile phone or a computer through the internet by means of a 3g module arranged on the robot, the robot can conduct security and protection monitoring according to an indicated travelling route through the fact that terminal equipment gives a control command or achieves route setting, terrain recognition can be achieved through a camera, and the multifunctional all-terrain bio-robot walks up and down stairs, steps over obstacles, and conducts other complex actions in complex terrains by being matched with an automatic balancing structure which is a multi-shaft accelerated speed gyroscope sensor arranged on the multifunctional all-terrain bio-robot. According to the technology of the robot, the functions of real-time video monitoring, voice communication, video recording, photo taking, sending relative data to an assigned mailbox, and the like are achieved.
Owner:深圳市英倍达科技有限公司
System and method with common and emergency LED (light emitting diode) intelligent illumination
InactiveCN102510609AReduce investmentIncreased coverage areaElectric light circuit arrangementEmergency power supply arrangementsConstant current sourceAC power
The invention relates to a system with common and emergency LED (light emitting diode) intelligent illumination, which is composed of an AC-DC (alternating current-direct current) power supply module, a standby power supply charging / discharging module, a main power supply detection module, a standby power supply, LED bead driving modules, a core controller, a common illumination control switch and LED bead string modules, wherein the AC-DC power supply module mainly realizes the conversion from a main AC power supply to a DC power supply; the standby power supply charging / discharging module realizes charging / discharging control on the standby power supply under the control of the core controller; the main power supply detection module mainly realizes state detection on the main AC power supply and reflects a detection result to the core controller; each LED bead driving module is controlled by the core controller and realizes constant current source driving of LED bead illumination; and the core controller realizes monitoring and control on the state of the whole system, and performs corresponding control according to the state of the main AC power supply, the state of a common illumination switch and the full state of a storage battery so as to realize automatic switching between common illumination and emergency illumination and charging / discharging control on the storage battery.
Owner:宁顺卫 +1
Method of planting lawn in saline-alkali soil
InactiveCN101828477AEffective coverageReduce water evaporationHorticultureSoil-working methodsAlkali soilEcological environment
The invention discloses a method for planting lawn in saline-alkali soil and relates to the fields of the saline-alkali soil control and planting technology. The method comprises the steps of: 1, soil arrangement; 2, establishment of a drainage canal; 3, straw application; 4, sand covering on a surface; 5, selection of grass seeds; 6, planting technology; 7, fertilizer application according to formulas; and 8, cultivation management. In the method, the bare surface of the saline-alkali soil can be covered effectively in short time, the water evaporation of the ground is reduced, and the saltness of the surface soil is reduced; the saline-alkali soil can be utilized comprehensively in a large area, and the vegetation structure of the saline-alkali soil can be adjusted; and the vegetation cover area of the saline-alkali soil is enlarged, and the ecological environment is protected and improved.
Owner:WUHAN BOTANICAL GARDEN CHINESE ACAD OF SCI
Industrial flue gas purification, desulfurization and denitrification integrated device and working method thereof
ActiveCN102489129AReduce usageEfficient removalAmmonium nitratesDispersed particle separationParticulatesSulfur dioxide
The invention discloses an industrial flue gas purification, desulfurization and denitrification integrated device and a working method thereof. A section of pretreatment flue is additionally arranged on a flue in front of an absorption tower, and the outlet of the pretreatment flue is connected to the inlet flue of the absorption tower in a downward gradient mode; an ozone spraying device and a pre-spraying device are arranged in the pretreatment flue from the inlet in turn; and the ozone spraying device is connected with an ozone generator through a gas transmission pipeline and converts SO2 into SO3 sulfide which is freely soluble in water, the pre-spraying device absorbs SO3 which is freely soluble in water and converts the SO3 into H2SO4, namely sulfuric acid, and flue gas is cooled simultaneously, so that the aim of removing nitrogen oxide and sulfur dioxide is fulfilled. The device can efficiently remove the nitrogen oxide, has an obvious effect of removing particulate matters such as the sulfur dioxide, dust and the like, and is desulfurization and denitrification equipment with a wide application prospect.
Owner:山东中玻节能环保发展有限公司
Method and apparatus for multiplexing hybrid satellite constellations
ActiveUS20180376392A1Large coverage areaLong signal propagation delayError preventionNetwork topologiesSatellite constellationTraffic volume
A method and apparatus for operating a satellite system including different satellites that may belong to different types of satellite constellations. In some implementations, the satellite system may include a LEO satellite constellation and one or more non-LEO satellite constellations that can be used to increase the forward link capacity of the LEO satellite constellation, for example, by allowing an LEO satellite to offload at least some of its forward link traffic to one of the non-LEO satellites. The user terminals can dynamically switch forward link communications between a LEO satellite and a non-LEO satellite while maintaining a return link connection with the LEO satellite.
Owner:QUALCOMM INC
Phase-shift diffraction/interference measuring instrument and method for detecting three-dimensional shape of microsphere
ActiveCN102519358ARealize leak-free detectionSolve the lack of precisionUsing optical meansPhase shiftedPolarizer
The invention relates to a phase-shift diffraction / interference measuring instrument and a phase-shift diffraction / interference measuring method for detecting a three-dimensional shape of a microsphere, and belongs to the technical field of optical detection of three-dimensional shapes of space objects. Through the instrument and the method, the problems that the detection range of single measurement is narrow and an ideal sphere which serves as a reference surface is difficult to manufacture in the conventional way for detecting the microsphere are solved. The measuring instrument comprises a short-coherence laser, a half wave plate, a polarizer, a first quarter wave plate, a second quarter wave plate, a right angle delay prism, a polarization beam splitter, a polarization analyzer, an optical fiber coupler, a single-mode single-core optical fiber, a right angle phase-shift prism, a converging lens, a pinhole sheet, a knife-edge reflector, a microscope objective, a large-size charge coupled device (CCD) and a computer. According to the measuring method, a light path is formed by the measuring instrument, and the detected microsphere is adjusted to rotate so as to acquire shape parameters of the corresponding microsphere to ensure that the shape of the microsphere is detected. The measuring instrument and the measuring method are suitable for detecting three-dimensional shapes of microspheres.
Owner:HARBIN INST OF TECH
Method for setting stop stations of urban bus line
InactiveCN101944288AImprove rationalityImprove accuracyRoad vehicles traffic controlGenetic algorithmRunning time
The invention discloses a method for setting stop stations of an urban bus line, relating to the technical field of urban bus programming. The method comprises the following steps of: establishing a multi-target programming model through the functional relation between the setting of the bus stop stations as well as an averaged passenger bus travel time, an averaged bus running time and a unit-length bus service cover area; and solving by adopting a correctional vector estimating genetic algorithm to obtain an optimum bus stop station setting scheme. The method in the invention fully takes the influence of the setting of the bus stop stations on passengers, bus operations and urban bas systems into account and ensures that the cover area of the bus service is as large as possible under the condition of ensuring that the passenger bus travel time and the bus running time are as short as possible. Compared with the prior art, the method greatly improves the setting reasonableness and accuracy of the bus stop stations and has the important significance on the urban bus programming.
Owner:SOUTHEAST UNIV
Fireman individual-soldier system on basis of wireless Mesh network framework
InactiveCN102104991AReduce volumeReduce stepsNetwork topologiesWireless mesh networkVital sign detection
The invention relates to a fireman individual-soldier system on the basis of a wireless Mesh network framework. The system consists of a wireless monitoring mainframe, a plurality of wireless individual-soldier sub-machines and a plurality of wireless repeaters, wherein the wireless monitoring mainframe consists of a monitoring module and a wireless center node module; and each wireless individual-soldier sub-machine consists of a central processing unit module, a positioning module, a vital sign detection module, a distress call module, an environment condition detection module, a carried equipment detection module and a wireless terminal node module. When the fireman individual-soldier system is applied particularly, firemen wear the wireless individual-soldier sub-machines to enter a fire site or other accident sites and a chief officer monitors information such as postures, motion tracks, vital signs, environment conditions, carried equipment conditions and the like through the wireless monitoring mainframe, so that the intelligence support of a command decision is provided for the chief officer in time and a scientific basis can also be provided for daily tactical training. By the fireman individual-soldier system, the modernization, automation and intellectualization levels of a fire command are improved and the battle damage rate of the firemen can also be effectively reduced.
Owner:SHANGHAI FIRE RES INST OF THE MIN OF PUBLIC SECURITY
Mobile type indoor disinfectant vapor disinfection system
InactiveCN102423496AImprove disinfection efficiencyEasy to controlLavatory sanitoryDeodrantsThree levelEngineering
The invention relates to a mobile type indoor disinfectant vapor disinfection system, which comprises a disinfectant vapor generation device, a wireless intelligent control system, a power-driven device, an environmental monitoring device, an air supply device, a mobile device and a disinfectant storage device. The disinfectant vapor generation device comprises a disinfectant vapor three-level refinement system, a filtering and catalyzing integrated system and a vapor generation control device; the air supply device supplies secondary power for scattering vapor in a space; and the wireless intelligent control system is communicated with the environmental monitoring device, the air supply device and the power-driven device so as to finish the operations of controlling the disinfectant vapor generation device, acquiring environmental parameters, and switching on / off the air supply device and the power-driven device in a disinfection target. The mobile type indoor disinfectant vapor disinfection system can intelligently, comprehensively and efficiently finish the disinfection operation of a closed space of large-sized equipment and is particularly suitable for the disinfection operation of a closed space with long and narrow passages, so that the mobile type indoor disinfectant vapor disinfection system has the advantages of strong maneuverability, high disinfection efficiency, no secondary pollution, and the like.
Owner:中国人民解放军防化学院 +1
Control system for solar panel cleaning robot
InactiveCN106182015ALarge coverage areaGuaranteed cleanlinessProgramme-controlled manipulatorPhotovoltaicsControl systemEngineering
The invention provides a control system for a solar panel cleaning robot. The control system is used for the solar panel cleaning robot and comprises a data acquisition unit, a processor and at least one storage unit, wherein the data acquisition unit is used for acquisition of at least one working parameter in the proceeding process of the cleaning robot; the processor is connected to the data acquisition unit and used for sending out at least one proceeding control instruction or at least one cleaning control instruction; and the at least one storage unit is connected to the processor and used for storing the working parameters of the cleaning robot in the proceeding process.
Owner:SUZHOU RADIANT PHOTOVOLTAIC TECH
Anti-condensation control method, device and air condition system used for fixed frequency unit
ActiveCN105910174AReduce humidityLower evaporation temperatureMechanical apparatusCondensate preventionState of artFuzzy relational databases
The invention discloses an anti-condensation control method, device and air condition system used for a fixed frequency unit. The method includes detecting the evaporation temperature of a refrigerant agent in the fixed frequency unit in a refrigerating mode; performing fuzzy inquiry calculation on the detected evaporation temperature based on a pre-set fuzzy relation database so as to obtain a corresponding calculation result, wherein the fuzzy relation database includes the fuzzy relation between the evaporator temperature of the fixed frequency unit and the corresponding indoor environmental temperature; judging whether to perform anti-condensation control over the fixed frequency unit based on the calculation result; enabling the fixed frequency unit to enter a predetermined anti-condensation control mode when the judgment result shows that anti-condensation control over the fixed frequency unit is needed so as to realize the anti-condensation control over the fixed frequency unit. The scheme provided by the invention can overcome shortcomings of use inconvenience, large potential safety hazards and poor user experience and the like of the prior art and can achieve beneficial effects of use convenience, small potential safety hazards and good user experience.
Owner:GREE ELECTRIC APPLIANCES INC
Bankcard transaction exchange system
ActiveUS7617152B2Efficient processingLarge coverage areaFinanceMultiprogramming arrangementsBatch processingExchange network
Owner:CHINA UNIONPAY
Multi-network-integration multifunctional digital emergency broadcast machine
InactiveCN106301637AGuaranteed uptimeAchieve securityBroadcast specific applicationsMicrocontrollerFrequency modulation
The invention discloses a multi-network-integration multifunctional digital emergency broadcast machine. The integration includes a single-chip microcomputer, and a signal reception decoding decryption module, a remote wake up processing module, a remote maintenance unit, an automatic priority level processing module, a data detection module, a power amplifier module, a power supply management module, a control instruction and audio signal output module, an LED and LCD control module, an intermediate wave frequency modulation reception module, an FM frequency modulation reception module, a module, a DTMB (Digital Television Terrestrial Multimedia Broadcasting) digital television network signal reception module, an IP network signal reception and data return module, a microphone module, an MP3 module, a satellite signal reception module, a RDS (Radio Data System) wired / wireless frequency modulation reception module, a GPRS / GSM / CDMA network communication and data return module, and the like which are connected with the single-chip microcomputer. The multi-network-integration multifunctional digital emergency broadcast machine carries out control data and audio transmission and broadcasting, is suitable for multiple network environments and transmission modes, ensures the high coverage rate, the stability and the broadcasting safety, and achieves multi-priority-level setting.
Owner:GUANGZHOU HUIQUN INTELLIGENT TECH
Flight path planning method for coordinated detection and obstacle avoidance of unmanned aerial vehicle group
ActiveCN110398980AEnable continuous monitoringLargest coverage areaNavigational calculation instrumentsPosition/course control in three dimensionsAngle independentPlanning approach
The invention relates to a flight path planning method for coordinated detection and obstacle avoidance of an unmanned aerial vehicle group. The method includes the following steps: S1. setting an unmanned aerial vehicle group flying area and designating a task monitoring area in the flying area; S2. defining yaw angle independent variables of N unmanned aerial vehicles, and initializing yaw angles, location coordinate information in the flying area, the number of current searching steps k=0, and the cumulative coverage percent=p1 on the task area at the current moment of the N unmanned aerialvehicles; S3. predicting flight path yaw angles and location information of (k+1) steps of the N unmanned aerial vehicles in the flying area, and separately calculating a coverage area and a fitnessfunction value; S4. comparing all possible fitness values, selecting a yaw angle and location information of an optimal fitness value as information of the (k+1)th step, and storing the yaw angle andthe location information in a flight path chart; and S5. enabling k=k+1, judging whether k=1 or percent=1, if yes, ending the planning, and otherwise, continuing S3 to S5. The method of the inventioncan realize the maximum monitoring coverage area, avoid obstacles and a required flight path has no fixed starting point and ending point.
Owner:XIDIAN UNIV
Photovoltaic power station monitoring system based on industrial wireless network
ActiveCN103197613AOptimize layoutEasy maintenancePhotovoltaic monitoringEnergy industryCommunications systemData acquisition
The invention relates to the wireless communication technology, in particular to a communication system which is based on a WIA industrial wireless network and used for monitoring and controlling operation of a photovoltaic power station in real time. The system comprises an upper computer, a wireless gateway device and wireless node devices, the upper computer is arranged in a monitoring room, provides a human-computer interaction interface of the monitoring system for a user and is connected with the wireless gateway through the Ethernet and used for monitoring photovoltaic equipment, the wireless gateway device completes data and control command switching with the wireless node devices and provides the upper computer with an inquiry and control interface, the wireless node devices are arranged in each monitored solar cell array tracking support and each monitored photoelectric combiner box in a dispersed mode and collect data of the solar cell arrays and the photoelectric combiner boxes. The system can totally replace an existing wired connection system and complete functions such as data collection of the equipment, sun-orienting control of the solar cell arrays and daily management of the power station, reduces building and maintaining cost of the photoelectric power station, promotes flexibility of the overall arrangement and is convenient for a user to manage.
Owner:SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
Unmanned plane data relay device based on mobile data network and method thereof
ActiveCN106788677ALarge coverage areaReduce volumeRadio transmissionWireless communicationThe InternetMobile station
The invention discloses an unmanned plane data relay device based on a mobile data network and a method thereof. The unmanned plane data relay device comprises an airborne radio, multiple mobile base stations, a data relay server, and a ground station computer for sending an instruction, wherein each mobile base station comprises a base station radio for receiving the data sent by the airborne radio and sending a control instruction from the ground station computer, a mobile wireless data network card, a base station computer, and a data acquiring unit installed in a base station computer; the base station and the airborne radio are in wireless communication; the base station computer is respectively connected with the mobile wireless data network card and the base station radio; the data acquiring unit is used for connecting the base station computer to the internet through the mobile data wireless network card; the data relay server is connected with the mobile base station, and comprises a relay program module; the relay program module is in wireless connection with the mobile wireless data network card; a client program module is installed in the ground station computer; and the ground station computer is connected with the data relay server.
Owner:FOSHAN UNIVERSITY
Glasses plate and cutting ring for concrete delivery pump
InactiveCN101158347ALarge coverage areaAvoid crackingPositive displacement pump componentsPumpsAlloyWear resistance
The invention discloses glasses plate and a cutting ring used for a concrete delivery pump, comprising a base and a hard alloy ring arranged on the cutting surface of the base; the hard alloy ring radially consists of a plurality of hard alloy blocked; the internal edge of the hard alloy block is folded and extends into a material delivery hole along the internal wall of the material delivery hole which is arranged on the base; a hard alloy cirque attached to the internal wall of the material delivery hole is assembled in the material delivery hole of the base; a linear spacing is reserved between adjacent hard alloy blocks in the material delivery hole at the cutting surface; the hard alloy blocks and the adjacent surfaces of the base are welded together; the linear spacing between adjacent hard alloy blocks are filled with welding flux. The glasses plate and cutting ring has good anti-wear and anti-shock performance and long service life.
Owner:SANY HEAVY IND CO LTD (CN)
Efficient multi-element compound fertilizer
InactiveCN101591202APromote stoutnessPromote absorptionSuperphosphatesAlkali orthophosphate fertiliserPhosphateInsect pest
The invention discloses an efficient multi-element compound fertilizer, which consists of hexanoic acid 2-(diethylamino) ethyl ester, polypeptide chelated potassium, polypeptide L-aspartate potassium, urea, potassium chloride, diammonium phosphate, calcium superphosphate, potassium dihydrogen phosphate, calcium-magnesium phosphate fertilizer, ammonium chloride, thiamine, zinc chloride, borax, ferrous sulphate, copper sulphate, manganese sulfate, sodium molybdate, cobalt chloride and silicon-manganese phosphate fertilizer. The efficient multi-element compound fertilizer has the advantages of promoting the growth of crops, improving the disease resistance of the crops, resisting falling, insect pests and frozen injury, improving the fertilizer effect, improving the soil, accelerating the growth of branches and leaves, reinforcing the photosynthesis, accelerating the growth of roots, enhancing the drought resistant capacity, improving the yield of the crops and improving the quality of fruits. The yield of grain crops is averagely increased by more than 26 percent, the yield of economic crops is averagely increased by more than 33 percent, and the yield of vegetable crops is averagely increased by more than 42 percent.
Owner:孙承环
Multielement seeding combustion explosion type rainfall-increasing and anti-hail rocket
InactiveCN101726219ANo pollution in the processLarge coverage areaWeather influencing devicesSelf-propelled projectilesCombustionEngineering
The invention relates to a multielement seeding combustion explosion type rainfall-increasing and anti-hail rocket. In the rocket, one end of a safety system (2) is connected with a flame bullet seeding catalyst system (1), the other end is connected with the front end of a solid motor (3); the back end of the motor (3) sticks to an empennage; four catalyst seeding holes are evenly distributed in the middle part of a nozzle (5), a plurality of flame bullets (12) are sleeved together to be arranged in a shell (15), safety fuses (16) are arranged in the centre bores of the flame bullets (12), a propelling medicine (13) is filled to one end of each flame bullet (12); a cladding medicine block(9) is filled in the threaded connection section capsule of the shell (15), an ignition medicine package (8) is arranged in the counter bore of the cladding medicine block(9), and the ignition wire of the ignition medicine package passes through the centre bore of the nozzle (5). The invention adopts the flame bullet burning mode that catalyst is burnt and seeded continuously and a plurality of flame bullets are thrown along the parent trajectory, for seeding the catalyst, thus requiring that the flame bullets are thrown reliably and the burning is stable. The flame bullets of the invention adopt casting moulding for structure design, the technology is easy and stable, and the flame bullets are easy for the batch production.
Owner:SHAANXI ZHONGTIAN ROCKET TECH CO LTD
Light quantum communication networking structure based on quantum centralized control stations and communication method thereof
ActiveCN102227101AImprove scalabilityLarge coverage areaPhotonic quantum communicationElectromagnetic network arrangementsStructure of Management InformationQuantum channel
The invention relates to a light quantum communication networking structure based on quantum centralized control stations. The structure comprises a plurality of quantum centralized control stations, wherein the quantum centralized control stations are connected with one or more optical switches through quantum channels, the optical switches hitch one or more first order users through the quantum channels. The quantum centralized control stations directly hitch one or more second order users through the quantum channels. The invention also discloses a communication method of a light quantum communication networking structure based on quantum centralized control stations. In the invention, a plurality of the quantum centralized control stations are used to form a plurality of network topology, which can raise flexibility and stability of the networking and can easily expand quantum communication network. Therefore, an area of the quantum communication network can be enlarged and communication distance can be substantially expanded. In addition, because quantities of the optical switches and interfaces of matrix optical switches are reduced, realization costs are relative low. Simultaneously, a structure that the optical switches hitch users is maintained so as to be suitable for the users with different security levels and different traffic demands.
Owner:QUANTUMCTEK
Digital emergency broadcasting system
InactiveCN106254012ASolve a singleSolve complexityBroadcast specific applicationsBroadcast-related systemsVideo monitoringData connection
The invention discloses a digital emergency broadcasting system. According to the digital emergency broadcasting system of the invention, an IP network, a GPRS network, an RDS frequency modulation network, a DTMB digital television network, a satellite transmission network and an intermediate and short-wave wireless frequency modulation network are integrated into one network; data transmission, control and management are carried out on a six network-in-one receiving intelligent controller, an RDS intelligent receiving terminal, a GPRS intelligent receiving terminal, an IP intelligent receiving terminal, an IP intercom terminal, a DTMB intelligent receiving terminal, a satellite receiving terminal, an intermediate and short-wave intelligent receiving terminal, an LED display screen, an LCD, a video monitoring system and a video conferencing system through the Internet; data connection with a satellite operations service center is carried out through the Internet; call and short message remote broadcasting is carried out through a mobile phone or a fixed-line telephone; control centers at all levels operate the terminals through the Internet and an operating PC; control instructions and audio information sources which are issued by the control centers are broadcasted through the terminals; and control instructions, texts, pictures or videos issued by the control centers are displayed through the LED display screen or the LCD.
Owner:GUANGZHOU HUIQUN INTELLIGENT TECH
Deepwater net cage feeding method based on suction type onboard automatic feeding system
InactiveCN105918198AShorten feeding timeImprove efficiencyPisciculture and aquariaBlocked valvesEngineering
The invention discloses a deepwater net cage feeding method based on a suction type onboard automatic feeding system. The automatic feeding system comprises a stock bin, a sucking pipe, a sealing bin, a blocking valve, an air inlet pipe, a Roots blower, an air-feed mixing and spraying device, a discharge pipe and a power device. The sucking pipe and the discharge pipe are hoses. A feed port of the blocking valve is communicated with a sealed inner cavity of the sealing bin, and a discharge port of the blocking valve is communicated with a feed port of the air-feed mixing and spraying device. An air outlet of the Roots fan is communicated with an air inlet of the air-feed mixing and spraying device, an air-feed mixing outlet of the air-feed mixing and spraying device is communicated with an inlet of the discharge pipe, and an outlet of the discharge pipe extends from a head position of a cultivation work ship. The deepwater net cage feeding method includes loading, work ship positioning and feeding. The deepwater net cage feeding method has the advantages of shortened feeding time, high feed conveying efficiency, large coverage area and capability of saving labor, increasing feed utilization ratio and cultivation efficiency.
Owner:SOUTH CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
Vehicle tracking and road traffic information collection method and system thereof
ActiveCN107888877ALarge coverage areaHigh precision costParticular environment based servicesClosed circuit television systemsMonitoring dataWireless signal
The invention relates to a vehicle tracking and road traffic information collection method and system thereof. The method comprises the following steps: formulating a monitor region map; storing information of video monitor equipment in the monitor region and the information of wireless base station equipment in the same database; collecting a wireless signal and a video signal; performing processing, positioning, tracking and traffic information collection on the wireless signal to acquire related data of the wireless terminal equipment, and storing the related data in the database; performing processing, positioning, tracking and traffic information collection on the video signal to acquire the related data of a video monitor target, and storing the related data in the database; matchingthe wireless terminal equipment with the video monitor target, and integrating the related data of the wireless terminal equipment with the related data of the video monitor target to acquire the initial traffic information; integrating the initial traffic information with the monitor data of other equipment in the monitor region to form the traffic information. Through the vehicle tracking and road traffic information collection method disclosed by the invention, the vehicle positioning, tracking and road traffic information collection with high precision, low cost and large scale can be realized.
Owner:深圳市戴升智能科技有限公司
Heat management and energy recycling system and method for battery module group of electric vehicle
ActiveCN109962317AGood high temperature heat dissipationGood low temperature heating abilitySecondary cellsHeat managementAutomotive battery
The invention provides a heat management and energy recycling system and method for a battery module group of an electric vehicle. The system comprises a thermoelectric power generation module, a cooling and heating module and an electronic control module, wherein the thermoelectric power generation module is connected with the battery module; the battery module is used for recycling heat emittedby the battery module and supplying power to the outside. The cooling and heating module is connected with the thermoelectric power generation module, is used for providing cooling liquid for the thermoelectric power generation module to produce temperature difference, and is also used for achieving the cooling or temperature heating of the battery module. The electronic control module is connected with the thermoelectric power generation module and the cooling and heating module, and is used for achieving dynamic control over temperature difference power generation and cooling and heating. When the temperature of the battery module is high, too high, low and too low, the electronic control module is used for achieving control over the temperature difference power generation module and thecooling and heating module, and the high-temperature heat dissipation capacity and the low-temperature heat preservation capacity of the battery module are greatly improved.
Owner:SHANDONG UNIV
Novel wide-area coverage hybrid wavelength-time division multiplexing passive optical network system
ActiveCN102665152ALarge coverage areaLow operating and maintenance costsMultiplex system selection arrangementsWavelength-division multiplex systemsWide areaEngineering
The invention relates to a novel wide-area coverage hybrid wavelength-time division multiplexing passive optical network system. A two-fiber bidirectional transmission mode is adopted for a system link. A central office wavelength division multiplexer / demultiplexer combines and splits uplink and downlink optical wavelengths respectively, so that the wavelength crosstalk of bidirectional data communication is avoided; a reconfigurable optical add-drop multiplexer inserted into a trunk fiber downloads and uploads signals of a time division multiplexing-passive optical network (TDM-PON) branch with any wavelength according to networking requirements; an all-optical wavelength converter transparently transmits a downlink optical signal which is downloaded by the reconfigurable optical add-drop multiplexer, and converts uplink data wavelength lambdaup signals which are transmitted by each optical network unit (ONU) in a unified way into uplink optical signals with optical wavelengths which are the same as the downlink optical wavelength lambdan of the branch; and an optical power splitter is connected with a plurality of ONUs in a hooking way to realize the service access of a user. The system is high in capacity, long in access distance, wide in coverage area, low in operation and maintenance cost and simple in network structure, a conflict between the bandwidth and cost of an access network is completely eliminated, and the advantages of various conventional PON technologies are reserved.
Owner:WUHAN POST & TELECOMM RES INST CO LTD
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