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Electrical-information-acquisition-system-based theoretical line loss estimation method for distribution network
ActiveCN102509159ASolving Computational Accuracy DifficultiesCalculation model is accurateData processing applicationsDistortionEstimation methods
The invention discloses an electrical-information-acquisition-system-based theoretical line loss estimation method for a distribution network, and aims to overcome the shortcomings of great errors of the conventional theoretical line loss estimation method for the distribution network, difficulty in accurate analysis on the characteristics of load fluctuation, unbalance, harmonic distortion, parameter variation and the like of the distribution network, and the like. By the method, each loss influencing factor of a medium and low voltage distribution network can be scientifically, perfectly and comprehensively reflected; and compared with a 'root-mean-square current method', an 'average current method', a 'maximum current method', an 'equivalent resistance method' and the like for estimating line loss only according to the single line diagram of the distribution network, typical day 24 hours, asynchronous current recording data and the like in DL686-1999 guide of calculation of grid energy loss, the invention has more accurate algorithms, parameters, load data and the like for the theoretical line loss, and provides a novel concept and a novel method for the loss analysis and energy efficiency evaluation of the distribution network.
Owner:CHINA ELECTRIC POWER RES INST +1
Unmanned plane flight control system and method thereof
ActiveCN107728642ARealize functionImprove work efficiencyPosition/course control in three dimensionsTerrainControl system
The invention discloses an unmanned plane flight control system. The unmanned plane flight control system comprises a main controller, an execution mechanism, a communication device and a ground station device. The master control system comprises a data collection module, a data processing module and a communication module. The data collection module is used for collecting measurement signals of various sensors and uploading the measurement signals to the data processing module. The data processing module can perform management and control on various flight modes and on an execution mechanismin the unmanned plane flight. The execution mechanism comprises a motor electric regulation device and a spraying device. The ground station device can perform track programming and can perform formation on multiple unmanned planes to carry out cooperated programming of multiple unmanned planes. The master controller realizes unmanned plane terrain simulation flight control, highly reliable faulttolerance control and autonomous obstacle avoidance control.
Owner:BEIJING BOYING TONGHANG TECH CO LTD
Engine plateau environment laboratory
The invention relates to an engine plateau environment laboratory which comprises an intake pressure simulation system, an exhaust pressure simulation system, a high and low temperature control chamber and a control system. The high and low temperature control chamber is used for placing an engine, the intake pressure simulation system is formed by sequentially connecting an intake pressurizer tank, a low-temperature box body and a refrigeration unit, and the exhaust pressure simulation system comprises an exhaust heat exchanger, an exhaust pressurizer tank, an exhaust electric control valve, a vacuum pump and a gas-water separator. Dispersive high-altitude natural environmental conditions (pressure, temperature and moisture) are intensively simulated in the laboratory, thereby improving the precision and the efficiency of the engine high-altitude environmental experiments.
Owner:MILITARY TRANSPORTATION UNIV PLA
Numerically-controlled full-automatic retainer window grinding machine
InactiveCN103381569AEnsure accuracy andGuarantee stabilityGrinding machinesGrinding work supportsTime efficientBall screw
The invention discloses a numerically-controlled full-automatic retainer window grinding machine which adopts an integral high-rigidity anti-vibration casting machine body; a linear guide rail and a precision ball screw are mounted on the machine body; lengthwise movement saddles, slide seats and transverse adjustment sliding masses are mounted on the left side and the right side of the machine body respectively; high-speed grinding electric spindles are mounted on the sliding masses; a spindle component is mounted at the middle of the machine body; a clamping device component is mounted on the spindle component; conveying belts are mounted on the two sides of the rear part of the machine body; a mechanical hand is mounted at the rear upper part of the machine body; and a workpiece conveying plate is mounted on the outer edge of the left side of the machine body and used for conveying workpieces to the conveying belts. According to the invention, feeding and discharging are performed full-automatically during workpiece grinding, and the purpose that one person operates multiple machines can be achieved, so that both time and labor are saved, the manufacturing cost is lowered greatly, and the production efficiency is improved.
Owner:ANHUI LICHENG MACHINERY EQUIP
Virtual test system and test method for ship performance
ActiveCN103303433AImprove realismTruly reflect human-computer interactionVessel partsAmbient dataTest fixture
The invention discloses a virtual test system and test method for ship performance, and belongs to the technical field of ship performance tests. The virtual test system comprises a storing device, a tool device, a testing device and an operating platform, wherein the storing device and the tool device are positioned at the bottom layer, the test device is positioned at a supporting layer, and the operating platform is positioned at an application layer; and the test method comprises the following steps: the operating platform builds the sailing data model of a boat sailing in the waves and the environment data model of the sailing environment of the boat respectively according to the testing result of the test device, and builds the conceptual data model of a boat in actual sailing by combining the two simulation models. The technical scheme provided by the invention is that the building of the navigation performance virtual testing system truly reflects man-machine interaction when a ship sails, the testing level is improved, the testing period is shortened, the testing cost is lowered, the accuracy and instantaneity of the motion simulation are ensured, and the fidelity of the virtual testing is further improved..
Owner:708TH RES INST OF CSSC
Robot joint driver with variable rigidity
The invention provides a robot joint driver with variable rigidity and relates to joint rigidity adjustment by utilizing a flexible rack mechanism. The flexible rack mechanism is connected between the output end of a rigid speed reducer and a joint connecting rod in series. A pair of rigidity adjusting mechanisms is anti-symmetrically arranged along the axial direction of a flexible rack, and accordingly forward and reverse joints are adjustable. Displacement of a gear relative to the flexible rack is solely confirmed through a turn angle of a rigidity adjusting motor by utilizing the flexible rack mechanism, accordingly a joint rigidity value is confirmed solely, and joint rigidity adjustment can be achieved by controlling the turn angle of the rigidity adjusting motor. The robot joint driver adopts the flexible rack mechanism, integrates an elastic link and the rigidity adjusting mechanisms and is short in adjusting time and compact in structure.
Owner:遨博(北京)智能科技股份有限公司
Cold heading machine
ActiveCN104174802AMeet sporting requirementsNot easy to move at high speedUpsetting pressesSwagging pressesMotor driveBack support
The invention discloses a cold heading machine. The cold heading machine comprises a machine body, wherein a main motor, a drive system, a linear feeding device, a rotary clamp, a cutter system, an adjustable male die ejecting mechanism and a closed back support are arranged on the machine body; the main motor is arranged at a first end of the machine body, and the drive system is arranged at an output end of the main motor; the linear feeding device is arranged at a second end of the machine body, and the closed back support is arranged on one side of the feeding device; the rotary clamp and the male die ejecting mechanism are arranged in the middle of the machine body; and the cutter system is arranged below the rotary clamp. After the main motor of the machine is started, the main motor drives the linear feeding device, the rotary clamp, cutters, the male die ejecting mechanism and the like through the drive system to finish processing steps of feeding, cutting, upsetting, finished product ejecting and the like. The cold heading machine has the advantages that the drive efficiency can be improved, the high-speed driving is realized, the working efficiency and precision of the cold heading machine are improved, and the like.
Owner:HUANGSHAN SHENGRUI HEAVY IND MACHINERY
Probe scanning device of reactor pressure vessel inspection machine
ActiveCN101894593APrevent bumping intoGuaranteed full scanNuclear energy generationNuclear monitoringReactor pressure vesselFixed frame
The invention relates to a probe scanning device of a reactor pressure vessel inspection machine, comprising an inspection arm and at least one probe assembly connected with the front end of the inspection arm. Each probe assembly comprises a probe mechanism coupled with a spherical surface area to be scanned, a spring cushion test bed used for providing a pressing force for the probe mechanism in the radial direction of the spherical surface and a descending bracket connecting the spring cushion test bed and the probe mechanism; the probe mechanism comprises at least one ultrasonic probe body and a probe fixing frame used for limiting the position of the ultrasonic probe body; the descending bracket comprises a horizontal part and an inclining part which aslant extends to the spherical surface; and the inclining part is pivoted with the probe fixing frame. The probe scanning device prevents the probe mechanism from touching a penetration member and ensures the overall scanning of the area to be scanned, and the ultrasonic probe body can be tightly coupled, which ensures the scanning continuity as well as the reliability and the accuracy of scanning results.
Owner:CGNPC INSPECTION TECH +2
Filtering method and device for point cloud data
InactiveCN106408604APrecise screeningGuaranteed accuracyImage enhancementImage analysisTerrainPoint cloud
An embodiment of the invention discloses a filtering method and a filtering device for point cloud data. The filtering method comprises the steps of: converting the point cloud data into raster data, and acquiring the lowest point in each raster as the initial point; performing morphological opening operation on the raster data to obtain an initial terrain surface; for each initial point, determining the current initial point as a potential ground seed point if a difference value between an elevation value of the current initial point and a value of the target raster which the current initial point falls into; constructing an initial triangulation network model according to the potential ground seed point; and determining a ground point according to the initial triangulation network model based on an irregular triangulation network filtering algorithm. By adopting the filtering method and the filtering device, the ground seed point can be reasonably determined, and the filtering efficiency is improved while guaranteeing the accuracy and precision of the initial triangulation network model, thereby the ground point in the point cloud data can be screened quickly and accurately.
Owner:BEIJING GREEN VALLEY TECH CO LTD
Fuel cell vehicle multi-environment comprehensive heat management method
ActiveCN111439167AGet working status in real timeKnow the temperature status in real timeAir-treating devicesFinal product manufactureTemperature controlFuel cells
The invention provides a fuel cell vehicle multi-environment comprehensive heat management method. Different control modes can be adopted for different environment temperatures. In a normal-temperature environment mode, namely a first control mode, the accuracy and stability of temperature control can be ensured through a feedforward control and feedback control technology. In a second control mode and a high-temperature environment mode, a power system is adopted for cooperative control, so that the working current of a fuel cell is reduced, the efficiency of the fuel cell is improved, the heat production of the fuel cell system is reduced, and the problem of high heat dissipation pressure of a cooling system in the high-temperature environment is solved. In the second control mode and inthe low-temperature environment mode, the waste heat of the fuel cell system is fully utilized, and the energy consumption of a whole vehicle is reduced while the temperature of the fuel cell systemand the temperature in a compartment are guaranteed. Therefore, the accuracy and the stability of the temperature control of the fuel cell system can be ensured in a complex and changeable environmentall the year round, the energy consumption of the whole vehicle is greatly reduced, the economy of the whole vehicle is improved, and the driving range is increased.
Owner:TSINGHUA UNIV
Underground pipeline intelligent detection robot and underground pipeline intelligent detection method
ActiveCN110174136AHigh degree of automationImprove collection efficiencyNavigation by speed/acceleration measurementsSatellite radio beaconingUnderground pipelineMobile robot
The invention discloses an underground pipeline intelligent detection robot and an underground pipeline intelligent detection method. The underground pipeline intelligent detection robot comprises a mobile robot main body and a plurality of sensors. The underground pipeline intelligent detection method disclosed by the invention comprises the steps of: firstly calibrating relative positions and posture information between the sensors and the sensors and between the sensors and the mobile robot main body; then causing the mobile robot main body to move autonomously in a pipeline space, and obtaining, by the sensors, data in real time; calculating a precise position of the mobile robot main body in a data collection movement process; calculating data spatial positions of the sensors according to the position of the mobile robot main body and the relative positions and posture information of the sensors, and registering and fusing the data of different sensors to obtain fused multi-sourcespace data of the pipeline space; and finally intelligently identifying and extracting a geometrical shape and attribute status information of a pipeline from the fused multi-source sensor data, andmarking spatial positions for these information. The underground pipeline intelligent detection robot disclosed by the invention realizes automatic collection of underground pipeline status detectiondata and intelligent identification and extraction process of pipeline status information.
Owner:WUHAN UNIV +1
Temperature and deformation real-time synchronous measuring device and method in high-energy-beam material additive manufacturing
ActiveCN105716655AEnsure accuracy andSolve the problem of real-time measurement of substrate deformationMeasurement devicesMeasuring instrumentContact type
The invention discloses a temperature and deformation real-time synchronous measuring device in high-energy-beam material additive manufacturing. The device comprises a work platform, a deformation measuring system and a temperature measuring system. The work platform comprises a workbench and a support. The deformation measuring system comprises displacement and optical sensors. The temperature measuring system comprises a thermocouple, a high temperature thermal imager, and tracking type and fixed type infrared temperature measuring instruments. The invention further discloses a measuring method of the above measuring device, and the method comprises the steps that: the contact type displacement sensor measures buckling deformation of a substrate in real time; the non-contact optical sensor measuring deformation of a formed part in real time; the thermocouple measures the temperature of a specific point of the substrate in real time; the fixed type infrared temperature measuring instrument measures the temperature of the specific point in real time; the tracking type infrared temperature measuring instrument measures the temperature of a molten pool in real time; and the high temperature thermal imager measures the temperature distribution of the side surface of the formed part in real time. According to the invention, the temperature and deformation data in the high-energy-beam material additive manufacturing can be synchronously measured in real time, and data support is provided for formed geometric structure performance control and simulation verification and optimization.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Digital component proton magnetic instrument
InactiveCN1553218AHigh measurement accuracyEnsure reliabilityElectric/magnetic detectionAcoustic wave reradiationDigital controlDigitization
A magnetometer which is composed of digitization frequency-selecting amplifier circuit, digital control current source, single chip computer, clock circuit, communication circuit and relevant control software applies measuring method of frequency in equal period frequency division to carry on measurement for magnetic field intensity according to prin ciple of proton precession. It can carry out measurement for multitype component conbination of F, Z, H, Fe, FH, FHD and FZD under the condition of manual operation or automatic operation according to the setting and it can carry out some other functions based on above principle.
Owner:稽才建 +1
Method for suppressing uniform ultra-sparse array antenna beam pointing fuzziness
InactiveCN101813764ARemove blurReduce adverse effectsRadio wave reradiation/reflectionPulse numberArray element
The invention belongs to a method for processing uniform ultra-sparse array antenna beam pointing fuzziness in the radar technology. The method comprises the steps of; performing initialization processing; performing directional transmission and reception by a first main lobe according to the set reference working frequency and two associated working frequency and pulse number in turn and performing comprehensive processing on the acquired three groups of target information so as to determine the existence of the target and removing pointing fuzziness caused by a grating lobe; when the target exists, inputting the angle and distance, speed and magnitude value of the target into a radar data processor together; and then repeatedly performing the processing on other main lobes so as to finish detection of the target on the pointing position of each main lobe. In the method, the angle range without grating lobe fuzziness is two times wider than that of two pieces of background technology and the array element number is reduced by over 50 percent, so that the method for the suppressing the uniform ultra-sparse array antenna beam pointing fuzziness is characterized in that: adverse impact of the grating lobe on the radar measured angle can be removed to the full extent; the antenna array element number and corresponding channel number of large-aperture uniform array radar are effectively reduced; the system cost is reduced, the application range is enlarged, and the like.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Construction method for pouring and forming urban viaduct curve type pier stud in one-off mode
InactiveCN104846744AQuality improvementHigh precisionBridge structural detailsBridge erection/assemblyFalseworkPile cap
The invention discloses a construction method for pouring and forming an urban viaduct curve type pier stud in a one-off mode. The construction method includes the following steps of 1 positioning pier stud pre-buried main reinforcement, 2 chiseling the combined portion of a pier body and a pile cap, 3 staking out in survey, 4 putting up a scaffold, 5 machining and installing reinforcement, 6 machining and installing a formwork, 7 pouring concrete, 8 disassembling the formwork and curing, and 9 removing the scaffold. According to the construction method for pouring and forming the urban viaduct curve type pier stud in the one-off mode, the pier stud has the advantages of being fast to construct, reasonable in structure, economical, practical and the like and is widely applicable to an urban high-pier bridge, particularly an urban high-pier landscape bridge.
Owner:NANTONG UNIVERSITY
Biaxial orientation polyvinyl chloride pipe and preparation method thereof
InactiveCN104017310AImprove toughnessOrientation temperature reachedRigid pipesTubular articlesPolyvinyl chlorideToughening
The invention discloses a biaxial orientation polyvinyl chloride pipe and a preparation formula thereof. The preparation formula comprises 100 parts of PVC (Polyvinyl Chloride), 1.5-3.0 parts of thermal stabilizing agent, 4-6 parts of processing agent, 5-10 parts of toughening agent, 0.2-0.5 part of outer lubricant, 0.3-0.8 part of inner lubricant, 1.0-2.5 parts of titanium dioxide and 0.02-0.04 part of carbon black. The invention further discloses a preparation method of the biaxial orientation polyvinyl chloride pipe. The preparation method comprises the following steps: weighing a raw material, performing a kneading process, performing an extrusion forming process, and performing a stretching and swelling orientation process. Due to adoption of the raw material formulation, by adding a proper amount of the toughening agent, the toughness of a pipe blank to be oriented is greatly improved, no cracks are caused in expansion, and thus the expansion stretching velocity can be increased by multiple times; through inner and outer water bath heating on the pipe blank, the pipe blank is prevented from influence of temperature of an ambient environment in the orientation process, the whole pipe blank to be oriented can meet the orientable temperature, and the time that the pipe is heated to be the expansion temperature is shortened by more than 10%, so that the production efficiency is greatly improved; due to arrangement of an outer diameter fixing sleeve in the expansion procedure, the size precision of the outer diameter and the wall thickness of the pipe is ensured, the pass percent of a product is improved, and the cost is lowered.
Owner:FUJIAN BODA PLASTIC IND NEW MATERIAL
Underwater robot used for submarine pipeline magnetic memory detection
InactiveCN108468862AGuaranteed to rock back and forthWon't rock back and forthPipe laying and repairPipeline systemsOcean bottomLeveling mechanism
The invention provides an underwater robot used for submarine pipeline magnetic memory detection. The robot is mainly used for solving the problem that a conventional ROV cannot detect the bottom of the submarine pipeline particularly the bottom of the pipeline lying on the sea bed. The robot is characterized by comprising an ROV body, a spraying gun sand removal mechanism, a pipe attaching crawling clamping mechanism, a variable diameter sensor detection mechanism and a sediment leveling mechanism; the ROV body serves as a carrier to provide supporting and power for other devices, the spraying gun sand removal mechanism is used for cleaning sediment on a pipeline and the bottom, the pipe attaching crawling clamping mechanism is used for clamping pipelines with different diameters and achieving secondary cleaning, and it is ensured that universal rollers on a clamping jaw are tightly attached to the pipeline for crawling and cannot slip; the variable diameter sensor detection mechanismis used for achieving locking holding detection of a sensor for the pipelines of the different diameters. The robot can achieve full-cycle comprehensive non-dead-corner detection of submarine pipelines under the complex conditions of the deep water area, the sediment coverage and the like.
Owner:NORTHEAST GASOLINEEUM UNIV +1
Omnidirectional intelligent mobile equipment positioning and navigation method based on laser ranging
ActiveCN108152827AEnsure accuracy andAchieve accurate positioningElectromagnetic wave reradiationLaser rangingAngular velocity
The invention discloses an omnidirectional intelligent mobile equipment positioning and navigation method based on laser ranging, which comprises the following steps: installing a sensor on an AGV, and measuring the distance from the center of the sensor to the center of the AGV; installing a laser reflector in the AGV operating site; setting the initial origin and zero angle of the sensor, usinga navigation controller to collect the real-time pose information of the sensor and filter it to obtain the current pose information of the sensor; obtaining the current pose information of the body center of the AGV through a conversion formula; and when the AGV performs patrol running, timely solving the deviation of the current pose information of the body center of the AGV from the target path, and timely adjusting the angular velocity and the yaw angle of the AGV according to the deviation to complete the navigation. The method arranges the sensor and the laser reflector, solves the deviation of the AGV pose and the target path in real time, and adjusts the AGV according to the deviation in real time, thereby realizing the flexible setting of the AGV running route and accurate navigation, and making up defects of the traditional laser navigation AGV positioning method that the path is single and the reliability is poor.
Owner:BEIJING SATELLITE MFG FACTORY
Numerical control retainer window grinding machine
InactiveCN103394984AEnsure accuracy andGuarantee stabilityGrinding carriagesGrinding machinesNumerical controlBall screw
The invention discloses a numerical control retainer window grinding machine. According to the numerical control retainer window grinding machine, an integrated high-rigidity shake-proof cast machine body is adopted, a linear guide rail and a precise ball screw are arranged on the machine body, a longitudinal moving saddle, a sliding seat and a horizontal adjustment sliding body are arranged on the upper surface of the machine body, a high-speed grinding motorized spindle is installed on the sliding body, a spindle component is installed in the middle of the machine body, a clamping device component is installed on the spindle component, and then workpiece grinding accuracy and stability are ensured by means of the cooperation between full servo control longitudinal movement and high-frequency rotation of a workpiece spindle. The numerical control retainer window grinding machine has the advantages of being high in stability, saving in time and high in efficiency.
Owner:ANHUI LICHENG MACHINERY EQUIP
Method for measuring continuously-variable load precision of large-scale floating dock in floating state
InactiveCN102167140AEnsure accuracy andEnsure safetyUsing optical meansMarine vessel transportationWater dischargeMarine engineering
The invention relates to the technical field of engineering ships, in particular to a method for measuring continuously-variable load precision of a large-scale floating dock in a floating state. The deck plane of the floating dock and the deck plane of a ship body are measured respectively by two electronic total stations (total stations for short), deformation data generated by the two electronic total stations in the ship body dragging process are fed back to a central control room at the same time based on a uniform reference, and the central control room is guided to perform water compressing adjustment or water discharging adjustment on the ballast tank of the floating dock. The method has the advantages that: the dynamic deformation of the floating dock and the ship body in the ship dragging process are instantly and statically fed back, and the instant deformation states of the floating dock and the ship are effectively measured, so that the central control room of the floating dock is guided to adjust the water compression in each ballast tank, the deformation precision and the launching safety of the ship body in the dragging process are ensured, a great number of working hours are saved, and the launching dragging efficiency is improved.
Owner:GUANGDONG COSCO SHIPPING HEAVY IND CO LTD
Steaming device for textile printing and dyeing and steaming method thereof
InactiveCN102443989ASolve problems such as chromatic aberration and defectsEasy to detectTextile treatment carriersLiquid/gas/vapor textile treatmentTemperature controlTextile printer
The invention disloses a steaming device for textile printing and dyeing and a steaming method thereof. The steaming device comprises a steaming box, a padder, a cloth guide roll, a cloth winding roll and a motor, wherein the motor controls the cloth winding roll by a transmission mechanism; the steaming box is provided with a cloth inlet and a cloth outlet; the box wall of the steaming box is provided with a hot air inlet and a steam inlet; the hot air inlet is communicated with a hot air pipeline connected with a hot air source; and the steam inlet is communicated with a steam pipe connected with a steam source. The steaming method of the device comprises the following steps of: mixing dry-hot air and saturated steam entering the steam inlet, using the generated high-temperature steam to carry out steaming on textile, and controlling the temperature and the humidity in the steaming box. By adopting the structure and the method, the steaming device and the steaming method have the following advantages that: 1) the extensive-form operating situation of the traditional steaming machine is changed, and online detection and intelligent control of parameters of a steaming process are realized; and 2) decoupling control is adopted for respectively compensating a temperature control loop and a humidity control loop, and automatic control can be carried out on two strong-coupling parameters such as temperature and humidity simultaneously.
Owner:ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
Three-dimensional printing method based on DLP (digital light processing) projection photocuring and equipment
PendingCN108422660AReduce data distortionHigh forming precisionAdditive manufacturing apparatusImage analysisDistortionThree dimensional model
The invention discloses a three-dimensional printing method based on DLP (digital light processing) projection photocuring. The method particularly comprises the following steps of: constructing a three-dimensional model of an object in advance, directly obtaining a cross section of each slice to be printed, and performing processing, area division and normal value judgment through corresponding units. The data distortion is reduced; the forming precision of printing data of the method is improved; areas to be printed and printing equipment with different performance are reasonably adapted, sothat the forming dimension precision and fineness of the object are guaranteed; and the forming efficiency is improved. In addition, the invention further discloses printing equipment adapted to thethree-dimensional printing method based on the DLP projection photocuring.
Owner:NANTONG INST OF TECH
Spring plate rigidity precision testing instrument
InactiveCN101556229AStiffness test is accurateEnsure accuracy andMaterial strength using tensile/compressive forcesTester deviceEngineering
The invention discloses a spring plate rigidity precision testing instrument which measures the rigidity of a spring plate on an electronic balance. The same kinds of spring plates on the same electronic balance have to possess the same rigidity. The rigidity of the prior spring plate is difficult to precisely measure due to the lack of a precision testing instrument, therefore, the accuracy and the stability of the electronic balance are affected. The lower part of the spring plate (2) to be measured is provided with a stress application rod (3); one end of a lever (4) acts on the stress application rod (3), and the other end is connected with a weight (6); an eccenter (5) is arranged close to the weight (6); and the upper part of the spring plate (2) to be measured is connected with a non-contact type displacement sensor (7) and a digital displayer (8). A weight rack (9) is arranged on the lever (4), and the middle part of the lever (4) is provided with a lever support (10). The invention has the advantages that the rigidity of the spring plate is accurately measured, the accuracy and the stability of the electronic balance can be ensured, and the spring plate rigidity precision testing instrument has convenient operation, simple structure, small volume and low cost.
Owner:SHANGHAI SUNNY HENGPING SCI INSTR
Tool abrasion state identification method based on convolutional neural network and long-short-time memory neural network combined model
ActiveCN110153802ANo expert experience requiredSave the cost of selecting featuresMeasurement/indication equipmentsNumerical controlNerve network
The invention discloses a tool abrasion state identification method based on a convolutional neural network and long-short-time memory neural network combined model. A force measuring instrument and an acceleration sensor are arranged on a workbench clamp of a numerical control machine tool and a workpiece, three-direction force signals and vibration acceleration signals are collected, collected data are subjected to data pre-processing, normalization processing and unified segmentation are conducted on the same row of data, one-dimension data are converted into two-dimension data to serve asinput, the convolutional neural network in the combined model is used for extracting abstraction features, the long-short-time memory neural network in the combined model is used for finding relevancebetween the data, and finally the tool abrasion state is output. An established double-network structure is arranged in a serial manner, the internal relation between the two kinds of signals can beestablished, the more abstract features are extracted through convolution, the timing sequence feature is determined according to the long-short-time memory, accordingly, the purpose of deeper relation of the data and the model is achieved, and applicability is achieved on various machine tools.
Owner:SOUTHWEST JIAOTONG UNIV
Gluing robot and gluing method thereof
InactiveCN102513268AEnsure correctnessEnsure accuracy andLiquid surface applicatorsSpraying apparatusControl systemRobot control
The invention discloses a gluing robot and a gluing method of the gluing robot. The gluing robot comprises a robot body, a glue gun, a gluing controller and a robot control device, wherein the robot control device is connected with the gluing controller and the robot body; and the glue gun is connected with the robot body and the gluing controller. Through the gluing robot and thegluing method, the gluing process can be completed automatically, and various modes of vehicles are glued at one station; and before gluing, the robot recognizes the modes of the vehicles to call the correct program initiatively to ensure the correctness and the accuracy of the robot gluing. Compared with the conventional gluing process, the automation of the gluing process is improved effectively, a hardware control system is simplified, the cost of the control system is lowered, and the flexibility of the control system is improved.
Owner:CHANGCHUN DAZHENG AUTOMATIC EQUIP
Combined stacking system based on machine vision for irregular tobacco packets
ActiveCN108529180AMeet speed requirementsHigh degree of intelligenceImage enhancementImage analysisMachine visionLogistics management
The invention provides a combined stacking system based on machine vision for irregular tobacco packets. The combined stacking system is characterized in that an irregular tobacco packet image is processed through a visual system so as to obtain a target binary image, then the angular point features of the tobacco packets are extracted so as to perform feature point matching, in addition, error matching point pairs are eliminated by using an improved RANSAC algorithm, so that recognition matching of the tobacco packets can be realized, and the recognition result is then proofread with the order tobacco packet information in an upper computer database; and after proofreading is completed, the tobacco packets enter the combined stacking system, adjusting and accurate positioning are carriedout according to pre-arrangement algorithm combined stacking of the upper computer, and finally the tobacco packets are grabbed the stacked by a stacking robot. The combined stacking system has the advantages that the correct recognition rate of the irregular tobacco packets reaches 100%, and proofreading and combined stacking of the irregular tobacco packets can be efficiently and rapidly completed; and a novel automatic tobacco packet stacking mode is created, and the tobacco logistics industry is promoted to make one essential step towards intelligentization.
Owner:CHONGQING UNIV OF POSTS & TELECOMM
Method and platform for demonstrating multi-dimensional multi-industry information of two-dimensional codes
ActiveCN108229195AExpand the scope of application scenariosImplement security managementDigital data protectionSensing by electromagnetic radiationMulti dimensionalWorld Wide Web
Owner:高江涛
Automatic cutting device for non-woven fabric tube bank
InactiveCN104384119AReduce manual cuttingIncrease productivitySevering textilesDirt cleaningPolyesterEngineering
The invention provides an automatic cutting device for a non-woven fabric tube bank. The device comprises a positioning cutting platform, a cutting device, a drawing extension and retraction device and a pushing device, wherein the cutting device consists of a thermoelectric cutter, a lifting oil cylinder, an induced draft fan, an air duct and a cleaning plate; guide wheels are arranged at the two ends of the thermoelectric cutter, and perpendicularly roll in guide wheel grooves; the temperature of the cutter can be regulated between 280 to 500 DEG C; the thermoelectric cutter is driven by the lifting oil cylinder to cut the non-woven fabric tube bank; burrs at a notch of the non-woven fabric tube bank are molten to produce a small amount of smoke, and the smoke enters the air duct, and is sucked by the induced draft fan to be exhausted outdoors; molten polyester fibers are adhered to a blade of the thermoelectric cutter, and are cleaned by the cleaning plate; the drawing extension and retraction device is regulated, the non-woven fabric tube bank moves on the positioning cutting platform, and is cut by the cutter when reaching a laser positioner, the cutter ascends, and meanwhile, an electromagnet is pushed and pulled to be energized for suction, and the cut tube bank is pushed out of the cutting platform by a pushing plate.
Owner:SHANDONG UNIV OF TECH
Discharging electrode and light catalyst reactor
InactiveCN1386574AImprove corrosion resistanceStable and uniform discharge lightNitrous oxide captureGas treatmentHazardous substanceThin membrane
Owner:KK TOSHIBA
Method for measuring parameter of omega welding seam defect
ActiveCN101672829AGuaranteed angleGuaranteed stabilityMaterial analysis using sonic/ultrasonic/infrasonic wavesMaterial magnetic variablesNuclear engineeringEngineering
The invention relates to a method for measuring the parameter of an omega welding seam defect, in particular to a method for measuring the parameter of an omega welding seam defect, which is applied to a control rod drive mechanism of a nuclear power plant. The method adopts a welding technique estimation test piece of the omega welding seam to manufacture a contrast test block, adopts an automatic detection device containing an ultrasonic detection method and a vortex detection method to measure the parameter of the defect and judges the parameter of the defect integrally. The method can effectively measure the parameter of the omega welding seam defect of the control rod drive mechanism of the nuclear power plant accurately, provides data support for the preventive maintenance of the control rod drive mechanism, provides guarantee for the nuclear safety and is suitable for detecting the parameter of the welding seam defect in nuclear industry system.
Owner:STATE NUCLEAR POWER PLANT SERVICE
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