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Thermoelectric catalytic power generator with preheat
InactiveUS6986247B1New pollutionMeet the test requirementsBatteries circuit arrangementsFuel cell heat exchangePollutant emissionsEngineering
An automobile catalytic converter that utilizes the energy of the exothermic reactions that take place in the catalysis substrate to produce electrical energy with a thermoelectric generator. On vehicle cold start, the thermoelectric generator is used as a heat pump to heat the catalyst substrate to reduce the time to catalyst light-off. In this way, the catalytic converter comes up to operating temperature more rapidly, reducing the amount of pollutant emissions at vehicle start-up.
Owner:PARISE RONALD J
Online fracturing test vehicle
ActiveCN104369687AGuaranteed shock absorptionEasy to useFluid removalItem transportation vehiclesOnline testFracturing fluid
The invention relates to an online fracturing test vehicle. The online fracturing test vehicle comprises a chassis, a shelter, a back protection device, a skirt edge box, a heating system and an automatic leveling device, wherein the shelter is mounted at the upper part of the chassis; the back protection device is mounted at the back end of the chassis; the skirt edge box and a generator are mounted at the side of the chassis; the automatic leveling device is mounted at four corners of the bottom of the chassis; the heating system is mounted at the top of the chassis; the shelter is integrated with an experiment instrument for a fracturing fluid test and a support agent analysis evaluation test; and the experiment instrument for the fracturing fluid test and the support agent analysis evaluation test is mounted on the chassis provided with the shelter, so that the online test can be performed on spot, the detecting accuracy and preciseness can be improved, and the detecting efficiency is improved.
Owner:YANTAI JEREH PETROLEUM EQUIP & TECH CO LTD
An online testing vehicle for fracturing
ActiveCN104369687BImprove accuracyHigh precisionFluid removalItem transportation vehiclesOnline testFracturing fluid
The invention relates to an online fracturing test vehicle. The online fracturing test vehicle comprises a chassis, a shelter, a back protection device, a skirt edge box, a heating system and an automatic leveling device, wherein the shelter is mounted at the upper part of the chassis; the back protection device is mounted at the back end of the chassis; the skirt edge box and a generator are mounted at the side of the chassis; the automatic leveling device is mounted at four corners of the bottom of the chassis; the heating system is mounted at the top of the chassis; the shelter is integrated with an experiment instrument for a fracturing fluid test and a support agent analysis evaluation test; and the experiment instrument for the fracturing fluid test and the support agent analysis evaluation test is mounted on the chassis provided with the shelter, so that the online test can be performed on spot, the detecting accuracy and preciseness can be improved, and the detecting efficiency is improved.
Owner:YANTAI JEREH PETROLEUM EQUIP & TECH CO LTD
Detonation performance test method for high-energy imploding explosive
InactiveCN102253083AFlexible simulationRealize synchronized measurementsMaterial exposibilityDetonatorExplosive Agents
The invention discloses a detonation performance test method for high-energy imploding explosive. The method is characterized in that: a explosive grain with a detonator is placed in a sealed explosion vessel; quasi-static pressure of the explosive, transient temperature of the explosive, detonation velocity of the explosive and gas components of the explosive are detected; a temperature sensor is arranged on the sealed explosion vessel, and is provided for monitoring the temperature changing in the sealed explosion vessel during the test process, a pressure sensor is arranged on the sealed explosion vessel, and is provided for monitoring the pressure changing in the sealed explosion vessel during the test process; the sealed explosion vessel is further connected with a gas collection andtest system, a firing device, a detonation velocity test device, a mechanical vacuum pump and a gas cylinder. The method is applicable for the performance tests of various imploding explosives, and can be provided for performing laboratory quantitative evaluation to the gas expansion working.
Owner:XIAN MODERN CHEM RES INST
Bored concrete pile foundation distributing optical fiber sensing detecting method and system
ActiveCN1888330AImplement distributed detectionOvercome the disadvantages of traditional point detection missed detectionFoundation testingConverting sensor output opticallyData acquisitionEngineering
The present invention relates to a distributed optical-fibre sensing detection method for cast-in-place pile foundation. It is characterized by that it utilizes the sensing property of optical fibre for strain, so that the optical fibre can be implanted in the cast-in-place pile. When the concrete is solidified or loaded externally, said concrete and its peripheral concrete can produce synchronous deformation, its produced strain extent is the strain valve of said pile-body concrete. The invented sensing technique is a distributed data acquisition, namely, it can obtain the strain data of every point of pile-body. Said invention can utilize these data to implement detection and analysis of cast-in-place pile.
Owner:SUZHOU NANZEE SENSING TECH
Multiple chips automatic test method based on programmable logic device
InactiveCN101158708AMeet the test requirementsImplement automated testingDigital circuit testingProgrammable logic deviceField-programmable object array
The invention relates to an automatic testing technology for molectron, in particular to an automatic testing method for multiple chips based on field programmable gate array (FPGA). According to the technical scheme provided by the invention, the field programmable gate array comprises the sample circuits that are connected to each other, a circuit of digital comparator, an encoder, and a pulse generating circuit. The technical scheme is characterized in that the input end of the circuit of digital comparator is connected with the output end of a multiplexer, the input end of the sample circuit is connected with a plurality of chips being tested; and the pulse generating circuit is connected with a plurality of chips being tested and a tested chip respectively; the output end of the encoder circuit is connected with the multiplexer. The invention uses the field programmable gate array (FPGA) to set up a simple automatic testing system, in which the automatic testing of a single or a plurality of chips can be implemented simultaneously on a testing board, The invention achieves automatic testing and has low input cost and rapid development, thus completely satisfying the requirement for the testing of small-lot products.
Owner:无锡汉柏信息技术有限公司
Detection circuit for high-performance brain electrical signal of brain-machine interface
InactiveCN101433461AMeet the testing requirementsSimple structureInput/output for user-computer interactionDiagnostic recording/measuringLow noiseHuman–machine interface
The invention relates to a high-performance EEG signal detection circuit provided with a brain-machine interface. The detection circuit comprises a pre-amplifier circuit and a post-amplifier circuit, wherein the pre-amplifier circuit consists of a first-level amplifier circuit and a second-level amplifier circuit which are connected by a high-pass filter circuit; and the pre-amplifier circuit is connected with the post-amplifier circuit by a 50Hz trap circuit and a low-pass filter circuit. The detection circuit has the characteristics of high input impedance, high common mode rejection ratio, high gain, low noise and low drift, and has the advantages of simple structure, strong capacity of resisting disturbance and good reliability. The invention can be used as a high-performance EEG signal detection circuit, and lay a foundation for realizing the brain-machine interface.
Owner:SHANGHAI UNIV
Nuclear power DCS platform test device based on simulation system and test method thereof
ActiveCN106257367AMeet functional requirementsRealize functionElectric testing/monitoringAutomatic controlNuclear power
The invention belongs to the technical field of automatic control of instruments and meters, and particularly relates to a nuclear power DCS platform test device based on a simulation system and a test method thereof. The device comprises a model server which operates all the system simulation models including chemical and volume control systems; an upper computer of which the function is communication configuration and operates monitoring control frames; and a communication server which realizes data communication between field acquisition controllers and the model server, wherein the port A of the communication server is connected with a lower switch and the port B is connected with an upper switch. The model server is connected with the first port of the upper server, the upper computer is connected with the second port of the model server, and the communication server is connected with the third port of the upper switch. The field acquisition controllers 1-8 are connected with the first to eight ports of the lower switch. The problems that the conventional hardware simulation technology does not perform modeling and cannot realize simulation of the actual physical and technical process control of a power plant can be solved, and the problems that logic testing cannot realize testing according to the technical control requirements can also be solved.
Owner:CHINA NUCLEAR CONTROL SYST ENG
Rotary type high-accuracy automatic sorting device for internal thread detection of small-sized revolved body workpiece and automatic sorting method adopting device
ActiveCN106694405AMeet the test requirementsEasy maintenanceMechanical depth measurementsUsing optical meansPetroleum engineeringParallel detection
The invention provides a rotary type high-accuracy automatic sorting device for internal thread detection of a small-sized revolved body workpiece, and an automatic sorting method adopting the device. The device comprises a loading channel, a first vision detection station, a turnover mechanism, a thread go gauge detection mechanism, a second vision detection mechanism, a thread no-go gauge detection mechanism, a high-accuracy rotary index plate, a discharging mechanism and a base. According to the rotary type high-accuracy automatic sorting device for internal thread detection of the small-sized revolved body workpiece, the equipment adaptability is strong, a user can realize self-defined classification, and multi-station parallel detection for multiple workpieces can be realized, therefore, the detection efficiency is greatly improved.
Owner:黑龙江哈工华粹智能装备有限公司
Large bidirectional dynamic/static direct-shearing machine for coarse-grained soil contact interface tests
InactiveCN103383327AImprove clippingGuaranteed uptimeMaterial strength using steady shearing forcesElectro hydraulicEngineering
The invention discloses a large bidirectional dynamic / static direct-shearing machine for coarse-grained soil contact interface tests. The machine comprises a measuring and controlling unit (1), a hydraulic servo unit (2), a loading unit (3) and a soil sample preparing unit (4). The loading unit (3) comprises a Z-direction vertical loading frame, an X-direction horizontal loading frame and a Y-direction horizontal loading frame, the three frames are perpendicular to each other, and the three frames all have independent loading ability. The hydraulic servo unit (2) comprises an X-direction horizontal loading actuator (311), a Y-direction horizontal loading actuator (312) and a Z-direction vertical loading actuator (31). The measuring and controlling unit (1) is in separate communication connections with three electro-hydraulic servo loading cylinders of the hydraulic servo unit (2). The large bidirectional dynamic / static direct-shearing machine is used in coarse-grained soil shearing performance tests, coarse-grained soil shearing performance tests on reinforced contact interface and coarse-grained soil shearing performance tests on concrete interface under the dynamic / static loading effects of simulation traffic loading.
Owner:CENT SOUTH UNIV
Triaxial rheological test process and method for hard and crisp rock
InactiveCN102128741AAvoid mutationsReduce axial output levelStrength propertiesHeat-shrinkable sleeveSteel tube
The invention relates to a triaxial rheological test process and method for a hard and crisp rock. The method comprises the following steps of: 1, determining an instantaneous triaxial compressive strength of the hard and crisp rock and loading by adopting a triaxial rheological mode; 2, determining the size of a confining pressure of a test and test loading grades and adopting a loading mode of circularly loading and unloading; 3, sealing a rock sample by using a heat-shrinkable sleeve and a stainless steel tube hoop so as to prevent oil from leaking; 4, applying the confining pressure to a set value, applying a first stage of axial load after the confining pressure is stable, and reasonably setting a time interval of recording data; 5, after the deformation is stable, continuously applying axial stresses in a grading mode until the test is completed; and 6, determining the long-term strength of the rock by adopting a residual strain method. In the invention, a reasonable value of the confining pressure is provided so as to furthest avoid deformation mutation caused by local fracture of the rock; the test loading grades are reasonably determined so as to not only obtain a threshold value of the creep stress of the rock, but also obtain an accelerated creep curve; and the scheme of determining the long-term strength of the hard and crisp rock by using the residual strain method of the loading and unloading rheological test is provided.
Owner:SHANDONG UNIV
Ultrasonic inspection of petroleum pipeline and inspecting robot
InactiveCN1982889ASimple structureReduce energy consumptionAnalysing solids using sonic/ultrasonic/infrasonic wavesUsing wave/particle radiation meansWave detectionPetroleum
A ultrasonic wave detection device of petroleum pipeline is prepared as setting ultrasonic probe at front end of robot body, arranging a rubber disc at tail end of robot, forming robot body by front unit and back unit as the two being connected by universal couple, applying driven wheels as traveling mechanism of robot and setting these wheels on front unit and back unit separately. Its dynamic-detecting method is also disclosed.
Owner:BEIHANG UNIV
Arc-shaped glass panel defect detecting method used for curved surface electronic display screen
ActiveCN106705897AMeet the testing requirementsOvercome the disadvantage of being unable to perform high-precision detection on the curved edge of the glass panel with the curved edgeUsing optical meansThree dimensional measurementOptoelectronics
The invention provides an arc-shaped glass panel defect detecting method used for a curved surface electronic display screen, and belongs to the optical three-dimensional measurement technology field. A structured light illumination technology is used for an electronic display screen glass panel defect detecting field, and a defect of a conventional detecting method of inability of carrying out the high precision detection of the arc-shaped edge of the glass panel provided with the arc-shaped edge having large curvature is overcome, and then the glass panel provided with the arc-shaped edge is used for the high precision detection of the defects of the arc-shaped edges of the double sides and the middle planar part of the glass panel. The arc-shaped glass panel defect detecting method has an advantage of rapid, high-precision, non-contact, and high-sensitivity detection.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Automotive body in white torsion rigidity test system and method thereof
The invention discloses an automotive body in white torsion rigidity test system. The system comprises: a constraint subsystem and a loading subsystem. The constraint subsystem comprises: a front suspension rack and a rear suspension rack. The loading subsystem comprises at least two power take-offs and a loading device. Through using an innovative improved design, the test system can carry out adaptive adjusting during a test process so that generation of stress can be reduced, versatility is good and test needs of different kinds of vehicle types can be satisfied. The invention also discloses a method for carrying out an automotive body in white torsion rigidity test by using the above test system. By using the method, the automotive body in white can be easily and rapidly leveled and ideal test data can be acquired. The test method of the automotive body in white torsion rigidity can be substantially improved. Compared to the other current test method, innovation improvements are realized in many aspects, such as the constraint processing, a position and a mode of load applying, collection of the test data and determination and the like.
Owner:SAIC MOTOR
Intelligent NC super high pressure true 3D uneven loading and unloading and pressure stabilizing model test system
ActiveCN108124460AHigh loading accuracyLong stabilization timeUnderground chambersMaterial strength using tensile/compressive forcesUltra high pressurePilot system
Owner:SHANDONG UNIV
Rolling linear guide friction force dynamic detection device and detection method thereof
InactiveCN101660957ACompact structureMeet the testing requirementsForce measurementUsing mechanical meansPull forceDesign standard
Owner:NANJING UNIV OF SCI & TECH
Camera detecting equipment and system
ActiveCN101625519AFeel free to adjust spacingMeet the testing requirementsPhotographyCorrelation testImage quality
The invention discloses camera detecting equipment, which comprises a base, a support, a test graph fixing frame and a camera fixing bracket, wherein the support is arranged on the base and can move on the base along the Y-axis direction; the test graph fixing frame is used for fixing a test graph, arranged on the support and can move on the support in the Z-axis direction; the camera fixing bracket is arranged on the base; and a camera to be detected is arranged on the camera fixing bracket, so that the camera is opposite to the test graph arranged on the test graph fixing frame. The invention also discloses a camera detecting system. The equipment provided by the invention can be fixed on a worktable, and related test parts can be adjusted along a screw rod and are stable so as to assist a computer to detect and calculate the central offset and rotation angle of an image shot by the camera and meet the higher level requirement on the quality of the shot image.
Owner:BYD SEMICON CO LTD
Relay-protection steady-state digital moving die test system
InactiveCN101153884APracticalMeet the test requirementsCircuit interrupters testingFailure dataPower grid
A relay protection stable-state digital dynamic simulation test system comprises a graphic data memory module, a power network modeling module, a parameter setting module, a failure setting module, a failure data calculation module, a failure analysis module and a relay protection simulation module, wherein, the graphic data memory module is used to store the graphic model of various elements of a power system and various failure calculation models; the power network modeling module, according to the structure of the to-be-detected power network, is used to select elements and corresponding failure calculation model and form the power network topological structure of the failure calculation models; the parameter setting module is used to set the concrete parameters of each element of the established failure calculation models; the failure setting module is used to set the failure types and parameters of the failure calculation models; the failure data calculation module, according to the network topological structure of the power network, is used to calculate the parameter after failure occurs, i.e. the current of each subcircuit, the voltage of each busbar and the branching factors among subcircuits. The invention realizes real simulation of various failures in power system, thereby having strong practicability.
Owner:HANGZHOU ZHONGHEN ELECTRIC CO LTD
Equipment for testing bending and torsion resisting performances of electrical insulator
ActiveCN101788429AAchieve storageRealize printingMaterial strength using steady bending forcesMaterial strength using steady torsional forcesReducerEngineering
The invention relates to equipment for testing the bending and torsion resisting performances of an electrical insulator. The equipment is characterized in that: the equipment comprises a slewing worktable, an upright post, a cross beam assembly and a lifting driving mechanism; the upright post is vertically fixed above the slewing worktable; the lifting driving mechanism arranged at the top end of the upright post comprises a screw rod, a speed reducer and a lifting coder; the screw rod is connected with a screw rod nut in the upright post, the top part of the screw rod is connected with the speed reducer, a linear guide rail is arranged on the side wall of the upright post, and the cross beam assembly is connected with the upright post by the linear guide rail in a sliding manner; a bending pressure head, a bending load sensor, a bending displacement coder and a torsion block are arranged on the cross beam assembly; a bending oil cylinder is connected at the rear of the bending pressure head, the bending displacement coder is arranged on the bending oil cylinder, a torsion load sensor is arranged on the torsion block, and the position of a groove of the torsion block is corresponding to that of a test piece fixing seat on the slewing worktable. With the characteristics of saving space and being convenient for use, the equipment can accurately detect the bending and torsion resisting performances of the electrical insulator.
Owner:SHANDONG LIANMEI SPRINGS TECH CORP
Intracranial and cervical joint radio frequency coil device for magnetic resonance imaging system
InactiveCN101950006AEasy to disassembleShorten inspection timeDiagnostic recording/measuringSensorsPolycarbonate plasticImaging quality
The invention discloses an intracranial and cervical joint radio frequency coil device for a magnetic resonance imaging system. The device comprises a base, an intracranial upper coil and a cervical upper coil in detachable combination, wherein the intracranial upper coil and the cervical upper coil are formed by packaging a coil circuit by deformable flexible polyethylene foams; a cavity of which the upper end and the cervical side are provided with openings is formed on the base; and the coil circuit is arranged around the cavity. The device has the advantages of weight far lighter than that of a conventional united coil made of hard polycarbonate plastic, convenient movement, smaller distance to a human body through the deformable coil, better imaging quality, respectively independent use or combined use of three parts of coils, and capacities of replacing a common coil, meeting detection requirements on common parts of all MRI and saving economic input.
Owner:SHANGHAI CHENGUANG MEDICAL TECH
Probe contact system using flexible printed circuit board
InactiveUS6859054B1Simple structureLow costElectrical measurement instrument detailsSemiconductor/solid-state device detailsElastomerElectricity
Owner:ADVANTEST CORP
Method for quickly detecting melamine in milk sample based on nanogold
InactiveCN101718708AThe preparation method is simple and feasibleMature technologyMaterial analysis by observing effect on chemical indicatorPreparing sample for investigationMilk sampleNanometre
The invention provides a method for quickly detecting melamine in a milk sample based on nanogold, which aims to solve the problems of the high operation requirement, complex detection process, high cost, long time, incapacity of meeting a lot of food test requirements and the like on the detection of the melamine. The method comprises the following steps: performing pretreatment on the milk sample and adding the pretreated milk sample into a nanogold solution; and adopting visual colorimetry to compare the color of the nanogold added with the sample solution with the color in a color standard series and then qualitatively judging whether the milk contains the melamine or not. The color standard series is prepared through the following steps: adding the pretreated milk samples in an identical volume and containing the melamine of different concentrations into the nanogold solution, wherein the content of the nanogold in each sample is consistent; and after color development reaction, obtaining the color standard series. The method has the advantages of low cost, simple and convenient operation and capacity of visually and quickly detecting the melamine in the milk.
Owner:FUZHOU UNIVERSITY
Broadband radar target simulation method and system
InactiveCN111183741BMeet the requirements of far-field testingImplement full functional testingWave based measurement systemsDigital dataWideband radar
The present invention relates to a broadband radar target simulation method and system, characterized in that: the received radar radiation signal enters the broadband down-converter of the simulation system through an attenuator and a low-noise amplifier to perform conversion from radio frequency to intermediate frequency, and the down-conversion output IF 70MHz band-pass signal, 70MHz IF modulation signal is low-pass filtered and then band-pass samples the input analog modulation signal, and the output digital data is digitally down-converted in the FPGA, demodulated to the digital baseband signal and delayed; the delayed The data is output to the IQ data processing circuit of the FPGA, and finally the target simulation in the microwave frequency band is radiated to the radar through the signal output by the DAC. The invention adopts space coherent reception, which can fully meet the requirements of radar far-field testing.
Owner:CNGC INST NO 206 OF CHINA ARMS IND GRP
Intelligent numerically-controlled ultrahigh pressure true three-dimensional non-uniform loading/unloading and steady pressure model test system
ActiveUS20190078987A1Size of device becomes largeIncrease loadUnderground chambersEarth material testingPilot systemUltra high pressure
An ultrahigh pressure true three-dimensional non-uniform loading / unloading and steady pressure model test system in which an ultrahigh pressure true three-dimensional non-uniform loading / unloading device is arranged in a combined bench counterforce device and used for carrying out ultrahigh pressure true three-dimensional loading / unloading on a test model, and an intelligent hydraulic loading / unloading and steady pressure numerical control system is connected with the ultrahigh pressure true three-dimensional non-uniform loading / unloading device via a high-pressure oil pipe; the ultrahigh pressure true three-dimensional non-uniform loading / unloading device is controlled in a digital servo manner via an input instruction of the intelligent hydraulic loading / unloading and steady pressure numerical control system to carry out ultrahigh pressure true three-dimensional gradient non-uniform loading / unloading and steady pressure control; an automatic model displacement test system automatically acquires the displacement of any part inside the model; and a high-definition multi-probe peeping system observes a cavern excavation deformation and failure process dynamically in real time.
Owner:SHANDONG UNIV
Ship model four-freedom-degree rotating arm test device and method
ActiveCN104085500AAccurately Acquire Maneuverable HydrodynamicsMeet the requirements of operational forecastingVessel designingEngineeringFour component
A ship model four-freedom-degree rotating arm test device comprises a rotatable rotating arm and a measuring mechanism between the rotating arm and a ship model. The measuring mechanism comprises a middle base fixedly connected with a rotating arm trailer, heaving rods penetrate through the middle base and can vertically slide, a linear displacement sensor is installed on a base plate at the lower ends of the heaving rods, a counterweight is connected to the upper end of the base plate through a steel wire rope, a four-component force measuring sensor is connected to the lower end of the base plate and fixedly connected with a longitudinal swing base, the longitudinal swing base is rotationally provided with a longitudinal swing shaft connected with a rotational potentiometer, the longitudinal swing shaft is fixedly connected with a middle frame, and the middle frame is connected with a heeling angle adjusting mechanism. The invention further provides a test method, wherein according to the method, water power in the longitudinal direction, water power in the transverse direction, water power during rolling and water power during yawing are measured through rotating arm tests under five test working conditions, and then the water power derivative is worked out through corresponding maneuvering motion equations. According to the ship model four-freedom-degree rotating arm test device and the test method, trim angle measurement and heaving displacement measurement of the ship model and water power measurement of the ship model in four motion directions can be achieved, and the handling quality of a ship in the four motion directions can be forecasted.
Owner:中国船舶重工集团公司第七〇二研究所
Pressure stability control device supplied with constant voltage by propellant
InactiveCN101539069AStable flowImprove working conditionsRocket engine plantsBuffer tankHigh pressure
The invention provides a pressure stability control device supplied with constant voltage by a propellant, in particular comprising a high-pressure air supply device, a supercharging device, a control gas device, a blowing device and a liquid propellant supplying device. The high-pressure air supply device supplies high-pressure air. The supercharging device supercharges a propellant storage tank to extrude the propellant to enter a feeding pipeline, and a supercharging buffer tank can stabilize the pressure of pressurized gas. The blowing device is in charge of filling the clearing of pipeline propellant. The control gas device provides control gas for the system. The pressure of pressurized gas can be always kept constant by the pressure stability control device supplied with constant voltage by the propellant, thereby continuously supplying liquid propellant in testing, and satisfying the principle of slow supercharging and preventing collapse of the feeding pipeline due to too fast pressurizing in pressurization.
Owner:BEIHANG UNIV
Fluorescent probe for identifying fluorine ions and preparation method and use thereof
ActiveCN102250134AExcellent optical propertiesSelect the outstanding performance of recognitionGroup 4/14 element organic compoundsFluorescence/phosphorescenceExcited stateFluorescence
The invention discloses a probe compound for identifying fluorine ions by combining spectral detection and bare eyes. The compound is a new compound formed by using excited state proton transfer compounds as a matrix and by silylation. The compound can be used for detecting fluorine ions, in particularly detecting fluorine ions in a water environment. Infiltrated test paper prepared by the compound is quick and convenient, the detection limit is low, and according to different excited wavelengths, two modes, namely an intensity identification mode and a chromaticity identification mode, can be selected respectively for better detection by an instrument and bare eyes.
Owner:INST OF CHEM CHINESE ACAD OF SCI
Delivery test system and method for motor for pure electric vehicle
ActiveCN102495367AGuarantee factory qualityMeet the testing requirementsDynamo-electric machine testingMotor testingArea network
The invention relates to a motor test system, which comprises a test controller, an inverter, a power tester, a rotating speed and torque sensor, a direct-current voltage stabilization power supply cabinet and a personal computer (PC). The invention also provides a method for testing a motor for an electric vehicle based on the test system. According to the test method, a whole rack test system is controlled through controller area network (CAN) communication; a rotating speed and torque measurement command is sent based on standard test data; rotating speed and torque data is fed back in real time by the rotating speed and torque sensor; and the feedback data is compared with standard data to judge whether the external characteristic of the motor is qualified. By the test system and the test method, the external characteristic of the tested motor can be detected accurately and efficiently, so that the delivery quality of the motor can be guaranteed; furthermore, the test process is high in automation degree and precise in test; and the method is easy to operate and low in cost, and has very wide application prospect.
Owner:奇瑞新能源汽车股份有限公司
Three-D small range force sensor
InactiveCN1912559ACoupling effects between small dimensionsEliminate the effects of directional force measurementsForce measurementEngineeringStrain gauge
A force transducer of 3D small range type consists of level beam and vertical beam. It is featured as setting right end H form through hole and left end one symmetrically on level beam, setting foil gauge on said holes to form the first Wheatstone bride, setting the first H form hole and the second H form hole on vertical beam, setting foil gauge on the first H form hole to form the second Wheatstone bridge, setting the second H form hole above the first one along X direction and setting foil gauge on the second H form hole to form the third Wheatstone bridge.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Nondestructive detection device for tunnel linings
ActiveCN106442726AEasy to moveElectrical protectionAnalysing solids using sonic/ultrasonic/infrasonic wavesEngineeringSteel tube
The invention relates to a nondestructive detection device for tunnel linings. The nondestructive detection device comprises universal casters with brakes, a worktable, a distance fine adjustment assembly, a height adjustment assembly, an automatic knocking assembly and a peripheral upper computer. The universal casters are mounted under a base of the worktable. The nondestructive detection device can be fixed onto a railway engineering vehicle by the aid of steel pipes and scaffold right-angle fasteners when about to work, the railway engineering vehicle and the carried nondestructive detection device can be dragged by a locomotive to move along tunnels, the tunnel linings can be knocked by the automatic knocking assembly of the nondestructive detection device, knocking sound waves can be converted into electric signals by a microphone, knocking sound signals can be acquired and analyzed by the upper computer, tunnel health information of structural parameters, cavities and the like of the tunnel linings can be obtained, and accordingly the tunnel linings can be nondestructively detected. The nondestructive detection device has the advantages that the nondestructive detection device is in a modular design and is convenient to assemble and disassemble, and requirements on 'skylight time' and requirements of detection on different tunnel linings can be met; the nondestructive detection device is easy to operate and high in automation degree, detection efficiency and precision and cost performance, conditions of the tunnel linings can be quickly judged after the tunnel linings are detected, and the like.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)
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