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43results about How to "Suitable for actual needs" patented technology
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Service robot autonomous navigation method based on raster maps
InactiveCN103914068ASuitable for actual needsBest possible solutionPosition/course control in two dimensionsFeature extractionRadar
The invention belongs to the technical field of robot navigation and relates to a service robot autonomous navigation method based on raster maps. According to the method, the information of the environment where a robot is located is acquired in real time through 2D laser radar, environment feature extraction is conducted, raster map establishment is conducted according to the acquired information by means of the SLAM technique, autonomous positioning is conducted on the robot in real time at the same time, path planning is conducted on the robot according to navigation task requirements on this basis, and then tracking control is conducted according to the planned path to enable the robot to accomplish the navigation task. Compared with the prior art, the method has the advantages that three key techniques in navigation are improved so that the method can meet actual requirements of service robot navigation better, and then the optimal feasible scheme is obtained; environment information is processed in real time to generate dynamic maps, and then autonomous navigation is achieved effectively, and navigation accuracy and efficiency are improved greatly.
Owner:PLA SECOND ARTILLERY ENGINEERING UNIVERSITY
A high-power heavy-duty thin coal seam shearer
ActiveCN102287185AReasonable structural designEasy to operateMechanical energy handlingDriving meansEngineeringElectric control
The invention discloses a high-power heavy low seam mining machine, which comprises a machine body, a left traction part, a right traction part, a left cutting part, a right cutting part, a swinging arm elevating hydraulic system and an electric control system, wherein the electric control system comprises an electric control box and a controller; the left cutting part comprises a left swinging arm, a left roller and left cutting motors; the right cutting part comprises a right swinging arm, a right roller and right cutting motors; the left traction part comprises a left traction motor and a left traction transmission mechanism; the right traction part comprises a right traction motor and a right traction transmission mechanism; the left cutting motors, the right cutting motors, the left traction motor, the right traction motor and swinging arm elevating hydraulic system are controlled by the controller; and two left cutting motors and two right cutting motors are provided. The high-power heavy low seam mining machine has the advantages of reasonable design, high overall power, high mining efficiency, stable and reliable working performance and good using effect, and can be used for solving the problems of low power, low mining efficiency, poor using effect and the like existed in the conventional coal mining machine in the mining process of a low coal seam.
Owner:XIAN COAL MINING MACHINERY
SDH (Synchronous Digital Hierarchy) multi-domain comprehensive test device and test method thereof
InactiveCN101834664AImprove test efficiencyReduce the difficulty of operationFibre transmissionTransmission monitoring/testing/fault-measurement systemsAsynchronous Transfer ModeLoopback
The invention discloses an SDH (Synchronous Digital Hierarchy) multi-domain comprehensive test device and a test method thereof, mainly solving the problem that single test equipment tests the network performance of an ATM (Asynchronous Transfer Mode) network transmitting in an SDH mode or an IP (Internet Protocol) packet network packed by adopting an HDLC (High level Data Link Control) protocol.The SDH multi-domain comprehensive test device mainly comprises a test data processor, an SDH processor and a microcomputer control system. The test method comprises the following steps of: (1) initializing the working mode of the SDH multi-domain comprehensive test device; (2) generating test information cells or packets of the corresponding working mode by the test data processor, mapping into an SDH frame and sending to a tested network element by the SDH processor; (3) extracting the test information cells or the packets from the loopback SDH frame by the SDH processor; (4) processing thereceived test information cells or packets by the test data processor; and (5) analyzing and displaying a test result by the microcomputer control system. The invention can not only test a single-mode or multi-mode multi-rate SDH network, but also realize that the single equipment tests the network performance of the ATM network and the packet network, and has easy and convenient operation and high cost performance.
Owner:XIDIAN UNIV
Method and apparatus for managing display to download task in download instrument
InactiveCN101119282AEasy to manageAvoid Click to View ActionsHardware monitoringStore-and-forward switching systemsSoftware engineeringUser management
Owner:TENCENT TECH (SHENZHEN) CO LTD
Asphalt composite matrix flexible waterproof coiled material, and preparation method thereof
InactiveCN105238083AImprove surface activityGood compatibilitySynthetic resin layered productsBuilding insulationsPolyesterEpoxy
The invention discloses an asphalt composite matrix flexible waterproof coiled material. The asphalt composite matrix flexible waterproof coiled material comprises a matrix layer B, an upper surface layer A bonded with the matrix layer B, and a lower surface layer C bonded with the matrix layer B; the upper surface layer A is bonded with the matrix layer B with a modified asphalt, and the matrix layer B is bonded with the lower surface layer C with the modified asphalt; the matrix layer B is prepared from non-woven fabric; the upper surface layer A is prepared from a polyethylene film, a high temperature-resistant polyester film, or fine sand; and the lower surface layer C is prepared from a polyethylene film. A preparation method of the modified asphalt comprises following steps: straw powder is added into a sulfuric acid solution for heating and stirring; epoxy chloropropane and hydrogen peroxide are added for uniform stirring and heating so as to obtain a modified straw powder; the modifier straw powder, zeolite powder, sepiolite, waste tire rubber powder, ether, and aluminium-zirconium coupling agent are uniformly mixed and are subjected to microwave treatment so as to obtain a modified rubber powder; asphalt is heated, the modified rubber powder, SBS, and machine oil are added for uniform stirring, an obtained mixture is subjected to oxidation polishing, and talcum powder and calcium sulfate whisker are added for uniform stirring so as to obtain the modified asphalt.
Owner:天长市金牛防水防腐材料有限公司
Shedding mechanism for air jet loom
ActiveCN101724955ASuitable for actual needsReduce vibrationLoomsOther shedding mechanismAir-jet loomEngineering
The invention relates to a shedding mechanism for an air jet loom. The mechanism comprises a left crank, a left connecting rod, a right crank, a right connecting rod, an oscillating bar and a sliding block arranged on the oscillating bar, wherein the left crank is provided with the A end and the B end, the A end is hinged on a machine frame, and the B end is hinged with one end of the left connecting rod; the right crank is provided with the C end and the D end, the C end is hinged on the machine frame, the D end is hinged with one end of the right connecting rod, the other end of the left connecting rod and the right connecting rod is correspondingly hinged with both ends of the oscillating bar respectively; a straight line passing the A end of the left crank and the C end of the right crank is defined as the X axis, the central point of a connecting line of the A end and the B end is defined as the base point O, and a straight lien passing the O point and vertical to the X axis is defined as the Y axis; and when the left and the right cranks rotate, the sliding block slides along the direction of the Y axis. Two sets of crank connecting rod mechanisms jointly drive the oscillating bar, and the relationship of the geometrical dimensions of all rods is controlled to ensure that the shedding mechanism keeps low oscillation while carrying out the shedding motion.
Owner:WUJIANG WANGONG ELECTROMECHANICAL EQUIP
Package generation method and system of C2B2C mode
InactiveCN105933126AIncrease motivationImprove satisfactionMetering/charging/biilling arrangementsAccounting/billing servicesBase functionComputer science
The invention relates to a package generation method and system of a C2B2C mode. The method comprises the steps that 1) a background module receives a request for establishing a package by oneself from a subscriber, and sends the request to a package combination module, and the package combination module displays all pre-stored basic function information for package establishment; 2) the package combination module receives a selection instruction from the subscriber, and according to the selection instruction, the package combination module combines the basic function information selected by the subscriber to generate the self-established package; 3) a pricing module calculates the self-established package in a combined manner to obtain a price of the package, and the self-established package and the package price are previewed in a combined manner; 4) whether a confirmation instruction is received from the subscriber is determined, if yes, a step 5) is turned to, and otherwise, the step 2) is turned to; and 5) a package issuing module generates a new package according to the self-established package and the package price, and stores and issues the new package. According to the invention, the subscriber can participate in package establishment, the initiative of the subscriber is improved, and the satisfaction degree of the subscriber is improved.
Owner:北京思特奇信息技术股份有限公司
Aqueous dispersion for environment-friendly type fiberglass surfacing mat
ActiveCN101480585ACreate pollutionLow priceMixing methodsSynthetic cellulose/non-cellulose material pulp/paperEthylenediaminePhosphate
The invention relates to an environment-friendly glass fiber surface felt dispersion liquid composition which is characterized by comprising the following components in percentage by weight: 0.15-0.25 percent of cation type azotic organic compound dispersion liquid, 0.1 percent of thickening agent, 0.05-0.21 percent of ethanol or ester antifoaming agent, and the rest being deionized water. The cation type azotic organic compound dispersion liquid comprises various ammonium type cation surfactants or quaternary ammonium salt type cation surfactants. The thickening agent is carboxymethyl cellulose or synthesized polymer thickening agent which is selected from polymethacrylate, polyvinyl isobutyl ether, polyisobutene or styrol copolymer. The antifoaming agent comprises 2 ethylhexyl alcohol, isooctanol, isoamylol, distearate acyl ethylenediamine, trioctyl phosphate, tributyl phosphate or glycerin trioleate. The invention cannot cause pollution to the environment, has low price and wide sources and raw materials and is applicable to glass fiber felts with different sizes and specifications.
Owner:NANJING NORMAL UNIVERSITY
Vehicle energy saving system combining temperature difference power generation and vortex tube principle
InactiveCN106150631AReduce fuel consumptionImprove comfortAir-treating devicesInternal combustion piston enginesAir pumpEngineering
The invention discloses a vehicle energy saving system combining temperature difference power generation and a vortex tube principle. The vehicle energy saving system comprises a gas supply device, a gas storage tank, a vortex tube, a first heat exchanger, a second gas pump, a second heat exchanger and a temperature difference power generation system. The gas supply device supplies gas to the gas storage tank. The input end of the vortex tube is connected with the gas storage tank. A cold gas output pipe of the vortex tube is divided into two branches to be connected with the first heat exchanger and the second gas pump correspondingly. A hot gas output pipe of the vortex tube is divided into two branches to be connected with the first heat exchanger and the second gas pump correspondingly. A stop valve is arranged on each branch. An output pipe of the first heat exchanger and an output pipe of the second gas pump are connected with the input end of the second heat exchanger together. The output end of the second heat exchanger is connected with the gas storage tank. A temperature difference power generation system supplies power to the gas supply device and the second gas pump. According to the vehicle energy saving system, heat in vehicle tail gas is converted into electric energy through the temperature difference power generation system, and noise and temperature of vehicle tail gas emission can be lowered, and because an air conditioner system based on the vortex tube principle is simple in structure, low in power consumption and can be completely self-sufficient, the oil consumption is lowered, and energy conservation and environment protection are achieved.
Owner:SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
Variable gain audio-frequency amplifier
PendingCN107181468AImprove frequency characteristicsBandwidthManually-operated gain controlNegative-feedback-circuit arrangementsCommon baseAudio power amplifier
The invention discloses a variable gain audio-frequency amplifier. The variable gain audio-frequency amplifier comprises a resistor R1, a current follower and a gain controller, wherein the resistor R1 is used for amplifying input impedance of the current follower; the current follower is a transistor common-base amplifier; the gain controller comprises an input impedance controller, an input current controller and an output impedance controller; the input impedance controller comprises a potentiometer RP1; the input current controller comprises a potentiometer RP2 and a resistor R2; one end of the potentiometer RP2 is connected with an input end of the input current controller, and the other end of the potentiometer RP2 is grounded; one end of the resistor R2 is connected with the input end of the input current controller; and the other end of the resistor R2 is connected with the input end of the current follower. The variable gain audio-frequency amplifier has a scientific and reasonable design and can be used for effectively amplifying voltage in an audio-frequency circuit, so that voltage gain can be randomly adjusted, and the problems of an existing audio-frequency amplifier that the frequency band is narrow and the frequency property is poor are solved.
Owner:韦炳伦
Horizontal type full-automatic flat-pressing flat-die-cutting marking press and die cutting method thereof
ActiveCN105538409ASmooth motionImprove die-cut qualityMetal working apparatusArticle feedersDrive shaftPulley
The invention discloses a novel horizontal type full-automatic flat-pressing flat-die-cutting marking press and a die cutting method thereof. The marking press comprises a rack, a paper conveying mechanism and a die cutting mechanism, wherein the paper conveying mechanism and the die cutting mechanism are mounted on the rack; a main power mechanism and a die cutting transmission mechanism are further arranged on the rack and connected with each other. The paper conveying mechanism comprises a servo motor, a servo controller, a first synchronous pulley, a second synchronous pulley, a third synchronous pulley, a fourth synchronous pulley, a first synchronous belt, a second synchronous belt and a plurality of grippers, wherein the servo controller is connected with the servo motor, the third synchronous pulley is connected with a transmission shaft of the servo motor, and the second synchronous belt is mounted between the third synchronous pulley and the fourth synchronous pulley in a sleeving mode; the first synchronous pulley and the fourth synchronous pulley are connected, the first synchronous belt is mounted between the first synchronous pulley and the second synchronous pulley in a sleeving mode, and the grippers are arranged on the first synchronous pulley in a spaced mode. Accordingly, interference and collision between the grippers and a die cutting platform never occur, working efficiency is high, and the structure is simple.
Owner:广州高印力信息技术有限公司
Multiplying power adjustment method of wide spectral line projection optical system
ActiveCN104062748AConvenient and effective correction or adjustmentExpand the scope of applicationPhotomechanical exposure apparatusMicrolithography exposure apparatusOptical pathSpectral line
The invention discloses a multiplying power adjustment method of a wide spectral line projection optical system. The multiplying power adjustment method includes the following steps: providing the reduced wide spectral line projection optical system which approaches to a telecentric optical path at object space and image space, wherein the wide spectral line projection optical system sequentially comprises a first lens set with the positive focal power, a variable-aperture diaphragm, a second lens set and a third lens set with the positive focal power from an object plane to an image plane, the second lens set meets the condition that vd=(nd-1) / (nF-nC) and comprises at least two positive lenses smaller than 1.65 in nd and larger than 65 in vd and at least two negative lenses larger than 1.50 in nd and smaller than 55 in vd, in the third lens set, the lens closest to the image plane is a negative lens, the negative lens has a concave face facing the image plane and meets the condition that the nd is smaller than 1.66, the vd is larger than 58, and ri / ti is larger than 0.6 and smaller than 5.0, and the lens sets meet the condition that f1 / L is larger than 0.05 and smaller than 1.3, |f2| / L is larger than 0.3, and f3 / L is larger than 0.03 and smaller than 0.8; adjusting the displacement of the lenses in the first lens set to adjust the projection multiplying power of the optical system.
Owner:ZHANGJIAGANG ZHONGHE AUTOMATION TECH
A box body with a left and right compartment structure for a vacuum cleaner
InactiveCN102286950AReduce suctionSuitable for actual needsRoad cleaningEngineeringStorage structure
A box body with a left and right compartment structure for a dust collection vehicle, mainly including: a power compartment, a filter silo seal door, a filter silo, a filter cartridge, an overhead filter, a garbage bin seal door, a dust suction port duct, and a garbage bin , deflector; it is characterized in that: the rear box is separated from the left and right by a partition, and the connection method is: the partition partition divides the box into left and right filter bins and garbage bins, and the top filter screen is connected to the filter cartridge Bin and garbage bin, the dust suction duct is installed on the right side of the garbage bin. The garbage bin and the filter bin are separated left and right and the garbage bin is fully welded. When working in rainy days, the water in the garbage bin will not reduce the suction of the vacuum truck due to the wet filter cartridge; it is more convenient to clean the fine dust in the filter bin; The suction port ducts are concentrated on the right side of the vacuum truck, which is more suitable for the actual needs of the vacuum truck on the highway.
Owner:SHANGHAI SHENZHOU VEHICLE RES & DEV
Construction method and application of avian influenza universal vaccine with spore probiotics as mucosal delivery vector
InactiveCN105950646AAdjuvant effectRealized the adjuvant effect and realized nasal mucosal immunizationSsRNA viruses negative-senseBacteriaCtl epitopeAntigen
The invention provides host bacteria, and also provides an avian influenza universal vaccine; the avian influenza universal vaccine takes spore probiotics as a mucosal delivery vector. A CTL epitope peptide of H7N9 or other type A avian influenza virus subtypes, a cytokine IL-2 and a brevibacterium mucosal immune vaccine vector are organically combined for the first time and have complementary advantages. For the H7N9, H5N1, H5N6, H7N9, H7N2, H7N3, H7N7, H9N2, H10N7 and other type A avian influenza virus subtypes, a CTL epitope antigen is designed and screened, the spore vector is used for delivery of the antigen epitope; a spore and a spore-displayed recombinant IL-2 are used as adjuvants, and the immune type and immunoreaction level are regulated.
Owner:SUN YAT SEN UNIV
High-power heavy low seam mining machine
ActiveCN102287185BReasonable structural designEasy to operateMechanical energy handlingDriving meansEngineeringElectric control
Owner:XIAN COAL MINING MACHINERY
Medium molecular weight hydroxyethyl starch and its purifying method
The invention provides a purifying method of medium molecular weight hydroxyethyl starch. The method comprises the following steps: 1, mixing an aqueous solution of medium molecular weight hydroxyethyl starch obtained in an ultrafiltration step of a medium molecular weight hydroxyethyl starch preparation technology with C1-C3 monohydric alcohol to precipitate the medium molecular weight hydroxyethyl starch from the aqueous solution; and 2, separating the medium molecular weight hydroxyethyl starch precipitated in step 1 to obtain purified medium molecular weight hydroxyethyl starch. The invention also provides the medium molecular weight hydroxyethyl starch obtained through the method. The method has industrialized values and can improve the internal quality of a product. The method has the advantages of reduction of the bacterial endotoxin and glycol level of the finished product, economy, energy saving, environmental protection and energy consumption reduction, and is suitable for real needs of the industrialized mass production.
Owner:NEW FOUNDER HLDG DEV LLC +2
Wide spectral line projection optical system and photoetching device
ActiveCN104062761AExpand the scope of applicationIncrease the exposure light intensityPhotomechanical exposure apparatusMicrolithography exposure apparatusOptical pathSpectral line
The invention discloses a wide spectral line projection optical system and a photoetching device. The wide spectral line projection optical system is a reduced projection optical system which approaches to a telecentric optical path at object space and image space, and sequentially comprises a first lens set with the positive focal power, a variable-aperture diaphragm, a second lens set and a third lens set with the positive focal power from an object plane to an image plane. The second lens set meets the relation that vd=(nd-1) / (nF-nC) and comprises at least two positive lenses smaller than 1.65 in nd and larger than 65 in vd and at least two negative lenses larger than 1.50 in nd and smaller than 55 in vd. In the third lens set, the lens closest to the image plane is a negative lens, the negative lens has a concave face facing the image plane and meets the relation that the nd is smaller than 1.66, the vd is larger than 58, and ri / ti is larger than 0.6 and smaller than 5.0. The lens sets meet the relation that f1 / L is larger than 0.05 and smaller than 1.3, |f2| / L is larger than 0.3, and f3 / L is larger than 0.03 and smaller than 0.8.
Owner:ZHANGJIAGANG ZHONGHE AUTOMATION TECH
Low-cost passive optical network for video monitoring
ActiveCN103327422AStrong upgradeabilityLow costMultiplex system selection arrangementsClosed circuit television systemsVideo monitoringVideo bitstream
The invention relates to a low-cost passive optical network for video monitoring. The low-cost passive optical network for video monitoring is suitable for a point-to-multipoint star-shaped and tree-shaped topology networking video monitoring network requiring low cost. An optical signal with the central wavelength being 1550nm is adopted in the network to conduct time division duplex communication, downlink light sent by an OLT carries a small number of control data, a great number of the control data is load, an RSOA reflection-type semiconductor optical amplifier is used in each ONU for modulating data such as uplink video; the distribution mode that a TDMA is accessed and a uplink bandwidth is relatively fixed is adopted among a plurality of ONUs; various control frames and video frames (BT.656 standard of an ITU-R, the resolution ratio is a 4CIF (704*576) format uncompressed video bitstream ) are all encapsulated according to a IEEE802.3Ethernet format.
Owner:ZHEJIANG UNIV OF TECH
Control system of teaching robot based on single processor structure
InactiveCN1209722CLow costSimple structureArchitecture with single central processing unitLoop controlClosed loop
Owner:SHANGHAI JIAOTONG UNIV
Method for manufacturing blading member assembly, and blading member assembly
InactiveCN106246232AControl thicknessUniform thicknessEngine fuctionsBlade accessoriesEngineeringMechanical engineering
Disclosed is a method for manufacturing a blading member assembly (10) for a fluid flow machine, wherein the blading member assembly includes at least one airfoil member (14) and one platform member (16). The method includes manufacturing a platform member blank, manufacturing an airfoil member blank, and processing at least one of said blanks thus obtaining the at least one airfoil member and at least one platform member, and subsequently joining the at least one platform member and the at least one airfoil member, thus providing the blading member assembly. The method, for instance, provides larger flexibility in arranging cooling openings (144).
Owner:ANSALDO ENERGIA IP UK LTD
Hydrocyclone desanding device and utilization method thereof
PendingCN109292906AReasonable structural designSmall footprintWater/sewage treatment by centrifugal separationSewage treatmentWaste management
A hydrocyclone desanding device comprises a sand separation portion and a sand hopper portion, the sand hopper portion is arranged below the sand separation portion and connected with the same in a transitional manner through an annular slope, the sand separation portion comprises a cylindrical cavity, a central beam barrel, a central cone and a suspension sleeve, the suspension sleeve is an annular plate arranged on a middle-upper portion in the hydrocyclone desanding device, a tangential water inlet is formed in an outer wall of a middle portion of the cylindrical cavity, a flow guide plateis arranged on an inner wall, close to the tangential water inlet, of the cylindrical cavity, an angle ranging from 130 degrees to 180 degrees is formed between the flow guide plate and the tangentialwater inlet, a water outlet and a dreg discharging port are formed in the circumference of an upper portion of the cylindrical cavity, and an annular suspending dreg collection area is formed betweenthe inner wall of the cylindrical cavity and an outer wall of the suspension sleeve. The hydrocyclone desanding device has the advantages of reasonable structural design, convenience in operation andutilization, low operation and maintenance cost, high automaton and intelligentization degrees and the like, and by the aid of the hydrocyclone desanding device, desanding efficiency can be increasedfor sewage treatment, and pollutants such as suspending dregs and grease carried in water can be removed at the same time.
Owner:BEIJING DRAINAGE EQUIP
Horizontal automatic flat die-cutting and creasing machine and its die-cutting method
ActiveCN105538409BSmooth motionImprove die-cut qualityMetal working apparatusArticle feedersDrive shaftEngineering
Owner:广州高印力信息技术有限公司
Novel residual current circuit-breaker circuit
InactiveCN104577979ASimple designImprove anti-interference abilityEmergency protective arrangements for automatic disconnectionOvervoltageSignal conditioning circuits
The invention relates to a novel residual current circuit-breaker circuit which comprises a power input. The novel residual current circuit-breaker circuit is characterized by further comprising a power circuit, a residual current signal conditioning circuit, a residual current detection and control unit, a circuit needed by the residual current detection and control unit, a residual current test circuit, an overvoltage detection circuit and a trip circuit, wherein the power circuit comprises a surge suppression circuit, a half-wave rectifying circuit, a resistance voltage reduction circuit , an external voltage stabilizing circuit and a filter circuit. The novel residual current circuit-breaker circuit is simple in design, and high in electromagnetic compatibility resistance characteristic, a residual current circuit-breaker is completely identical with small residual current circuit-breaker circuits in size, and the residual current circuit-breaker circuit solves the problem that a traditional small overvoltage protection type residual current circuit-breaker needs to be provided with an overvoltage module, as a result, the size of the traditional small overvoltage protection type residual current circuit-breaker is increased, and the traditional small overvoltage protection type residual current circuit-breaker can not be conveniently assembled on a distribution box in a matched mode. The novel residual current circuit-breaker circuit is simple in structure design, low in production cost, and quite suitable for meeting the actual market requirements.
Owner:CNC ELECTRIC GRP
Distributed sharing engineering-based engineering design system
InactiveCN113658018ASimple designAvoid application duplicationData processing applicationsGeographical information databasesControl engineeringData collecting
The invention relates to the technical field of engineering design systems, and discloses a distributed sharing engineering-based engineering design system, which comprises an engineering design system, and is characterized in that the output end of the engineering design system is in electric signal connection with a distributed construction unit and an open design unit; the input end and the output end of the distributed construction unit and the input end and the output end of the open design unit are in bidirectional electric signal connection with the output end and the input end of the engineering design system, and a user carries out map query on buildings around a construction site by means of the open design unit through the open design unit; in this way, building information around a construction site can be clearly observed, meanwhile, the field investigation module is matched to record and store information of investigation around the construction site, and meanwhile, the auditing module and the data collecting and filing module are matched, so that a designer can completely know the information around the construction site by means of the open design unit; in this way, design personnel can design conveniently, and the problem that the built building and surrounding buildings are repeatedly applied is solved.
Owner:深圳市联合创艺建筑设计有限公司
Aqueous dispersion for environment-friendly type fiberglass surfacing mat
ActiveCN101480585BCreate pollutionLow priceMixing methodsSynthetic cellulose/non-cellulose material pulp/paperEthylenediaminePhosphate
Owner:NANJING NORMAL UNIVERSITY
A Low-Cost Passive Optical Network for Video Surveillance
ActiveCN103327422BStrong upgradeabilityLow costMultiplex system selection arrangementsClosed circuit television systemsVideo monitoringVideo bitstream
The invention relates to a low-cost passive optical network for video monitoring. The low-cost passive optical network for video monitoring is suitable for a point-to-multipoint star-shaped and tree-shaped topology networking video monitoring network requiring low cost. An optical signal with the central wavelength being 1550nm is adopted in the network to conduct time division duplex communication, downlink light sent by an OLT carries a small number of control data, a great number of the control data is load, an RSOA reflection-type semiconductor optical amplifier is used in each ONU for modulating data such as uplink video; the distribution mode that a TDMA is accessed and a uplink bandwidth is relatively fixed is adopted among a plurality of ONUs; various control frames and video frames (BT.656 standard of an ITU-R, the resolution ratio is a 4CIF (704*576) format uncompressed video bitstream ) are all encapsulated according to a IEEE802.3Ethernet format.
Owner:ZHEJIANG UNIV OF TECH
Turning-over action control circuit of bedsore-proof inflatable mattress
The invention discloses a turning-over action control circuit of a bedsore-proof inflatable mattress. The turning-over action control circuit comprises a first non-steady state oscillator, a second non-steady state oscillator, a single-pole double-throw analogue switch, a first solid-state relay and a second solid-state relay; an output end of the first non-steady state oscillator is electrically connected with a public end of the single-pole double-throw analogue switch; the output end of the second non-steady state oscillator is electrically connected with a control end of the single-pole double-throw analogue switch; a normally open end of the single-pole double-throw analogue switch is electrically connected with a positive electrode of the control end of the first solid-state relay; a normally closed end of the single-pole double-throw analogue switch is electrically connected with the positive electrode of the control end of the second solid-state relay; a negative electrode of a controlled end of the first solid-state relay and the negative electrode of the controlled end of the second solid-state relay are connected with the positive electrodes of solenoid valves on a left side pipeline and a right side pipeline on the inflatable mattress respectively in a one-one correspondence manner. The turning-over action control circuit of the bedsore-proof inflatable mattress can realize alternate inflation and deflation, and lying and resting functions of a left side air path and a right side air path of the bedsore-proof inflatable mattress.
Owner:THE SECOND AFFILIATED HOSPITAL ARMY MEDICAL UNIV
Quick alarm and instant video and audio communication system and method
PendingCN112261342AFast and convenient remote technical supportImprove the efficiency of remote maintenanceTelevision conference systemsTwo-way working systemsThe InternetEmbedded system
The invention relates to a quick alarm and instant video and audio communication system and method, and the system comprises a repair server which is connected with a cloud curtain server and a socialtool server, and is connected with at least one repair gateway with a database through the Internet. The repair gateway is connected with the information interaction terminal and a plurality of repair button devices with independent numbers through a repair special wireless communication network; and the repair button device is provided with an independent power supply unit, and the independent power supply unit is connected with a trigger unit with an alarm button, a heartbeat unit, a wireless communication unit and a heartbeat indication unit. According to the invention, the repair button device and the independent repair communication channel are arranged on the site of the monitoring equipment, so that a straight-through interaction channel can be quickly and conveniently establishedbetween the site and maintenance personnel, communication can be carried out in multiple modes such as voice, video, image and data, and if multi-party communication is needed, a conference mode can be entered through social software; and therefore, the convenient remote technical support is realized.
Owner:BEIJING JINGYI QIANGYUAN TECH
Foot scanner calibration method and device
InactiveCN106690653AFlexible access methodSuitable for actual needsFoot measurement devicesComputer visionBrightness perception
The invention relates to the field of stereoscopic scanning and discloses a foot scanner calibration method and device; in an embodiment of the invention, the foot scanner calibration method comprises: acquiring an image including the calibration device; segmenting the image according to a preset segmenting manner to obtain N image blocks, with N being a natural number greater than 1; analyzing brightness of each of the N images to obtain respective high-brightness areas of the N images; using the N high-brightness areas as calibration points. The embodiment of the invention also discloses a foot scanner calibration device. By using the foot scanner calibration method and device according to the embodiment of the invention, a foot scanner can be calibrated automatically, the automation level of calibration steps is increased, and calibration efficiency and accuracy can also be improved.
Owner:TIBET YIDETI INFORMATION TECH CO LTD
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