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73results about How to "Measure impact" patented technology
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Device and method for measurement of diameters and mass concentration of particles in smoke dust
ActiveCN106556556AObtain particle size in real timeMeasure impactParticle size analysisParticle suspension analysisComputing centerLength wave
The invention provides a device and method for simultaneous measurement of diameters and a mass concentration of particles in smoke dust. The device comprises a laser source, a first light intensity detector, a second light intensity detector and a computing center. The laser source is used for emitting one-wavelength laser to smoke dust so that scattered light is formed. A detection direction of the first light intensity detector and an exit direction of the one-wavelength laser form an included angle of 5-60 degrees. The first light intensity detector is used for acquiring first scattered light intensity. A detection direction of the second light intensity detector and an exit direction of the one-wavelength laser form an included angle theta of theta 1 to theta N. The second light intensity detector is used for acquiring second scattered light intensity I theta. The computing center is used for acquiring diameters and a mass concentration of particles in smoke dust according to the first scattered light intensity and second scattered light intensity I theta. The device and method solve the problem that the measurement result of the traditional light scattering method is influenced by particle diameters and ensure measurement real-time performance and accuracy.
Owner:HUAZHONG UNIV OF SCI & TECH
Lithography device and method for measuring multi-light spot zero offset
InactiveCN102566295AMeasure impactEliminate the effects of height measurementsPhotomechanical exposure apparatusMicrolithography exposure apparatusLithographic artistOptical axis
The invention discloses a lithography device, which comprises a light source for providing exposure light beams, a projection system for projecting a pattern on a mask plate onto a substrate, a workbench system for moving the substrate and a focusing leveling system for measuring a vertical position and an inclination angle of the substrate. The lithography device is characterized by further comprising a reflecting mirror and a laser interferometer, wherein the optical axis of the laser interferometer is perpendicular to the reflecting surface of the reflecting mirror, and the reflecting surface of the reflecting mirror is parallel to an optical focal plane of the projection system. The invention further discloses a method for measuring multi-light spot zero offset simultaneously. By means of the method, the multi-light spot zero offset can be accurately measured under the condition of using a normal plane, and influence of the uneven appearance of a measured surface on the height measurement is eliminated.
Owner:SHANGHAI MICRO ELECTRONICS EQUIP (GRP) CO LTD
Light curtain measuring device and method for vehicle exterior dimension
InactiveCN106052567AReduce measurement errorSmall speed effectUsing optical meansObservational errorMeasurement device
The invention discloses a light curtain measuring device and a method for vehicle exterior dimension, which relate to the technical field of measuring. The device comprises a length measuring light curtain, a height measuring light curtain and a width measuring light curtain which are connected with a controller; the length measuring light curtain is installed in a measuring channel. The height measuring light curtain is vertically arranged in the measuring channel. The width measuring light curtain comprises a width measuring light curtain receiver and a width measuring light curtain emitter. The width measuring light curtain receiver is arranged above the measuring channel while the width measuring light curtain emitter arranged below the road surface of the measuring channel. The light curtain formed by the width measuring light curtain receiver and the width measuring light curtain emitter forms an acute angle with the road surface of the measuring channel. The measuring method measures the exterior dimension of a vehicle such as width, length and height through the use of light curtains. Compared with the prior art, the device and the method reduce the influence of the traveling speed of a vehicle during the measurement, achieve small measuring errors and saves time and labor.
Owner:柳州科路测量仪器有限责任公司
Quantitative evaluation method for urban heat island effect
InactiveCN108549858AMeasure impactMeasuring CouplingClimate change adaptationScene recognitionEnvironmental resource managementData acquisition
The invention discloses a quantitative evaluation method for an urban heat island effect. The method comprises the following steps of 1, performing data acquisition and preprocessing; 2, calculating an urban heat island intensity and grading; 3, calculating a land utilization contribution index LCI; and 4, coupling urban heat island effect evaluations of the land utilization type based on an LCI index model. The quantitative evaluation method is used for more accurately quantifying the relation between different land utilization types of the city and the urban heat island effect, and the influence of land utilization layout change to the heat island effect. The change of an urban underlying surface is used as a most important factor which affects the urban heat island effect. According tothe quantitative evaluation method, the relation between the land utilization type and the urban heat island effect is quantitatively evaluated, and a scientific guidance basis is laid for reasonableutilization and configuration of the urban land resource.
Owner:WUHAN UNIV OF TECH
Leakage-proof ring and method of XLPE (Crosslinked Polyethylene) cable polarization current measurement
The invention discloses a leakage-proof ring and method of XLPE cable polarization current measurement. Metal shielding and outer semiconductor layers at the two ends of a measured XLPE cable are peeled and serve as reserved edge surfaces, a copper strip of the width of 15mm and thickness of 2mm is selected, and the length of the copper strip is selected according to the diameter of a cable core and the thickness of an insulating layer. The length of the copper strip equals [pi*(D+d*2)+30]mm, D represents the diameter of the cable core, d represents the thickness of the insulating layer, and the margin of 30mm is considered. Holes of the diameters of 5mm are drilled at positions 5mm to the edges at the two ends of the copper strip respectively, the copper strip is bent till the holes at the two ends are leveled, and a copper ring, namely, the leakage-proof ring, is formed. The leakage-proof rings at the two ends are connected so that leakage current of the edge surfaces does not directly flow back to a power side via a current measurement module, influence of edge-surface leakage current on measurement of the polarization current is influenced, and the polarization current measured by the current measurement module does not include the edge-surface leakage current.
Owner:HUAZHONG UNIV OF SCI & TECH
Detection device for spacecraft surface charging effects
ActiveCN104828263AReduce volumeReduce weightCosmonautic vehiclesCosmonautic partsNonlinear distortionClosed loop
The invention provides a detection device for spacecraft surface charging effects, which comprises a driving module, a potential sensor, an analog signal processing circuit and a digital signal processing circuit. The monitoring device adopts a closed loop circuit design. When nonlinear distortion happens to the system, nonlinear distortion at the output end of the potential sensor is overlapped with waveforms at the input end, amplified net input signals are neutralized with nonlinear distortion, and thus, linearity and stability of the device can be effectively improved, and the detection precision is improved. In addition, the potential sensor is small in size, light in weight, and can be carried at each position inside the spacecraft for comprehensive surface potential detection; and as non-contact measurement is adopted, the potential sensor is not contacted with the measured surface of the spacecraft, and charge measurement on the measured surface is not influenced.
Owner:NAT SPACE SCI CENT CAS
Product life cycle modeling method and apparatus, and electronic device
InactiveCN106897904AHigh precisionImprove efficiencyMarket data gatheringTime delaysProcess engineering
The invention provides a product life cycle modeling method and apparatus, and an electronic device. The product life cycle modeling method comprises the steps of obtaining a sample function; performing statistics on an actual value of a product life cycle based on a retention rate in first preset days; determining parameters of the sample function according to the actual value, and determining a retention rate prediction function corresponding to the product life cycle based on the parameters; performing subsection integral operation on the retention rate prediction function; and predicting the product life cycle based on a function obtained by the integral operation, thereby performing modeling on the product life cycle. Through the method, the apparatus and the electronic device, the time delay of product life cycle modeling and the dependency on existing historical data can be shortened and reduced, and the prediction efficiency and accuracy of the product life cycle can be improved.
Owner:KINGSOFT
Resistance characteristic electrical variable measuring device of electronic component
ActiveCN113252983AMeasure impactAvoid compromising accuracyResistance/reactance/impedenceElectrical testingElectrical resistance and conductanceStructural engineering
The invention discloses a resistance characteristic electrical variable measuring device of an electronic component, and belongs to the technical field of measuring equipment. The resistance characteristic electrical variable measuring device of the electronic component comprises a box body and an electronic component body, and further comprises a feeding hole and a discharging hole which are respectively formed in two sides of the box body; a frame, which is fixedly connected to the inner wall of the box body; a self-locking assembly which is arranged on the frame; a conducting ring which is arranged on the self-locking assembly and is connected with the electronic component body in an inserting manner; and a signal source which is matched with the conducting ring to transmit an electric signal to the electronic component body. According to the invention, when an electronic component body is measured, a limiting effect can be achieved, the situation that displacement occurs during measurement and measurement of the electronic component body is affected is avoided, dust attached to the conductive column can be cleaned while limiting is conducted, and the situation that the measurement accuracy is affected due to the fact that a large amount of dust is attached is avoided; after measurement, automatic blanking is performed and workers do not need to manually take the electronic component bodies, so that the measurement efficiency is prevented from being affected.
Owner:江苏振宁半导体研究院有限公司
Hall linear displacement transducer without lead
InactiveCN1731097AThere is no problem of breakingExtended service lifeConverting sensor output electrically/magneticallyTransducerEngineering
The invention discloses a non-involvement Hall linear displacement sensor. It possesses a connected front end cap, a fur and a rear end cap, wherein the inner fur is positioned inside the fur and besides to the rear end cap; the measuring rod is through with the front end cap; the anti-rotating side is positioned on the surface of the measuring rod; the permanent-magnet steel is positioned on the outside of the measuring rod; the magnet steel seat with first permanent-magnet steel in the inner fur and second permanent-magnet steel is connected with the inner side of the measuring rod; the printing plate and the Hall unit are positioned on the end cap of the inner fur; the pad is positioned on the outside of the rear end cap. The moving part is the measuring rod, which drives two permanent-magnet steels without lead-line; it adopts flat cylinder magnet steel and fixes the Hall unit on the middle axle of the two magnet steels, so that the outputted Hall electric potential is stable.
Owner:孙钢
Engine oil dipstick and engine
InactiveCN104018910AImprove accuracyMeasure impactLubrication indication devicesAutomotive engineeringDipstick
The invention discloses an engine oil dipstick comprising an engine oil dipstick pipe and an engine oil dipstick body, wherein the engine oil dipstick body comprises a handle and a dipstick rod with one end connected to the handle and the other end provided with a measuring part; the dipstick rod is of a bendable structure; the engine oil dipstick pipe comprises a joint pipe, a hose and a mounting fixing pipe which are sequentially connected; the end of the dipstick rod, which is provided with the measuring part, sequentially passes through the joint pipe, the hose and the mounting fixing pipe and extends out of the end of the mounting fixing pipe, which is far away from the hose. The mounted engine oil dipstick can be bent towards any direction so as to meet the requirement for layout diversity of an engine; in addition, the engine oil dipstick pipe is provided with the mounting fixing pipe, and the part of the engine oil dipstick pipe, extending into a crankcase, can be used for fixing and limiting the dipstick rod of the engine oil dipstick, so that the condition that the engine oil quantity measurement is affected because the engine oil dipstick body fiercely shakes along with engine oil in a vehicle operation process is avoided, and the engine oil dipstick measuring accuracy is improved. The invention also discloses an engine.
Owner:ANHUI HUALING AUTOMOBILE
Evaluating an electromagnetic field strength of an electromagnetic gate apparatus
InactiveCN101911093AAvoid disturbing influenceMeasure impactMemory record carrier reading problemsNear-field in RFIDCommunication unitEngineering
A device (110) for evaluating an electromagnetic field strength / field geometry of an electromagnetic gate apparatus (120) is provided, the device (110) comprising a measurement unit (112) adapted for receiving a measurement signal from the electromagnetic gate apparatus (120) and determining a value of the field strength of said measurement signal, a communication unit (114) adapted for receiving command data from the electromagnetic gate apparatus (120) and adapted for sending response datato the electromagnetic gate apparatus (120). Optionally, the device (110) comprises an evaluation unit (116,118) adapted for evaluating the electromagnetic field geometry of the electromagnetic gate apparatus (120) based on said values of the field strength received from the measurement unit (112).
Owner:NXP BV
Flow simulation method and device
ActiveCN108271198AMeasure impactIn line with the actual situationWireless communicationSimulationBandwidth requirement
The embodiment of the invention provides a flow simulation method and device, which relates to the field of communication technologies and can simplify the network flow simulation process. The specific scheme is that a simulation device obtains a target flow model corresponding to a first port of a target; calculating a downlink flow value to be superimposed of a target base station at each presettime point according to the target flow model and a preset maximum downlink flow value of the target base station; obtaining a reference downlink flow value of a second port at each preset time pointand the maximum support bandwidth of the second port; superimposing the downlink flow value to be superimposed of the base station at each preset time point with the reference downlink flow value ofthe second port at each preset time point according to a corresponding relation of the preset time points to obtain the total downlink flow value of the second port at each preset time point; and determining whether the second port meets a bandwidth requirement or not according to the total downlink flow value of the second port at each preset time point and the maximum support bandwidth of the second port. The embodiment of the invention is applied to network flow simulation.
Owner:HUAWEI TECH CO LTD
Analytic method and device for gas with coketar particles
InactiveCN101051008AImprove efficiencyHigh measurement accuracyWithdrawing sample devicesPreparing sample for investigationTarEngineering
A method for analyzing gas with tar particles include leading gas to be analyzing into liquid contained in sealed container and dissolving tar particles in gas by said liquid, filtering said gas when it is discharged out from said liquid, sending discharged out gas into analyzer for obtaining parameter of said gas. The device used for realizing said method is also disclosed.
Owner:FOCUSED PHOTONICS
Device and method for measuring vehicle exterior dimension
InactiveCN106052588AAutomate your measurementsAvoid saving time and effortUsing optical meansAcute angleOptoelectronics
The invention discloses a device and a method for measuring vehicle exterior dimension, which relate to the technical field of measuring. The device comprises a distance measuring device, a height measuring light curtain and a width measuring light curtain which are connected with a controller; the distance measuring device is installed in the travel direction of a vehicle to be inspected, and is opposite to the vehicle to be inspected. The height measuring light curtain comprises an emitter and a receiver, both in vertical arrangement; the width measuring light curtain comprises a width measuring light curtain receiver and a width measuring light curtain emitter, wherein the width measuring light curtain receiver is arranged above the measuring channel while the width measuring light curtain emitter arranged below the road surface of the measuring channel. The light curtain formed by the width measuring light curtain receiver and the width measuring light curtain emitter forms an acute angle with the road surface of the measuring channel. The measuring method measures the exterior dimension of a vehicle such as width, length and height through the use of light curtain and the distance measuring device. Compared with the prior art, the device and the method have small measuring error and save time and labor; free of limitations of the traveling speed of a vehicle, the device and the method achieve high accuracy in measuring the exterior dimension of a vehicle.
Owner:柳州科路测量仪器有限责任公司
Device, system and method for measuring leakage current of high-voltage direct-current cable
InactiveCN111880111AImprove stability and securityUseful for evaluating insulationOverload protection arrangementsShort-circuit testingElectrical currentControl theory
The invention discloses a leakage current measuring device for a high-voltage direct-current cable. The leakage current measuring device comprises a current measuring module and a loop protection module, wherein the first end of the loop protection module is connected with a tested high-voltage direct-current cable; the first end of the loop protection module is also connected with the first end of the current measurement module, and the second end of the loop protection module is connected with the second end of the current measurement module; the second end of the current measurement moduleis grounded; the current measuring device is used for measuring the leakage current of the measured high-voltage direct-current cable; and the loop protection module is used for protecting the currentmeasurement module from being damaged. The embodiment of the invention further discloses a corresponding measurement system and method, and by implementing the embodiment of the invention, the leakage current of the high-voltage direct-current cable can be measured in real time during the pre-identification test of the high-voltage direct-current cable, the safety and stability of the measurementprocess are effectively improved, and the evaluation of the insulating property of the high-voltage direct-current cable during the pre-identification test is facilitated.
Owner:ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
Reaction kinetics detecting device of dehydrogenation and catalyzation board and realizing method thereof
ActiveCN105527369ASolve difficult problems that are not easy to measureAvoid reactionChemical analysis using catalysisHydrogen concentrationNuclear power
The invention discloses a reaction kinetics detecting device of a dehydrogenation and catalyzation board. The reaction kinetics detecting device comprises a hydrogen source, a gas distribution tank, a reaction vessel, a hydrogen concentration meter, a gas circulating pump and a data collecting and processing device, wherein a closed loop is formed as the gas circulating pump, the gas distribution tank, the reaction vessel and the hydrogen concentration meter are in end-to-end connection; the hydrogen source is used for supplying hydrogen; the gas distribution tank is used for mixing the hydrogen with air therein and obtaining hydrogen concentration needed for measurement; the reaction vessel is used for placing a catalyzation board and providing an environment for a hydrogen-oxygen catalytic reaction; the hydrogen concentration meter is used for quantitatively measuring the hydrogen concentration in the closed loop; the gas circulating pump is used for controlling gas circulation in the closed loop; the data collecting and processing unit is used for collecting data of pressures of the gas distribution tank before and after the hydrogen is added therein, temperature of a catalyst in the closed loop and hydrogen reaction concentration. The reaction kinetics detecting device disclosed by the invention has the advantages that the design is reasonable, the operation is simple, is safe and reliable, and accurate and quick detection on activation energy and pre-exponential factors of a dehydrogenating catalyst of a nuclear power station can be realized.
Owner:MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS +1
Electrical variable measuring device for electrical resistance characteristics of electronic components
ActiveCN113252983BMeasure impactAvoid compromising accuracyResistance/reactance/impedenceElectrical testingElectrical resistance and conductanceEngineering
Owner:江苏振宁半导体研究院有限公司
Main-pipe-type on-line pulp-concentration sampling measurement device
ActiveCN102426219AAvoid depositionReduce the impactWithdrawing sample devicesInjection portMeasurement device
The invention discloses a main-pipe-type on-line pulp-concentration sampling measurement device. The device comprises a sample injection assembly arranged between two process pipes, a sampling tank and a sample discharge assembly, wherein, one side surface of the sampling tank is equipped with two sample injection ports communicated with the sample injection assembly, and the other side surface of the sampling tank is equipped with one sample discharge port communicated with the sample discharge assembly; the sample discharge port is positioned between the two sample injection ports; and the top of the sampling tank is equipped with a concentration meter sensor for detecting the concentration of pulp in the sampling tank. The main-pipe-type on-line pulp-concentration sampling measurement device has the advantages that the structure is simple, and the concentration meter sensor has high measurement accuracy and good stability.
Owner:HUNAN CHANGTIAN AUTOMATION ENG CO LTD
Positive sequence capacitance measuring method for parallel circuits
InactiveCN103399212AMeasurement has no effectMeasurement results have no effectResistance/reactance/impedencePower flowThree-phase
The invention relates to a positive sequence capacitance measuring method for parallel circuits, wherein positive sequence capacitance is measured by utilizing a three-phase experiment power supply and a mutual inductance measuring device. The three-phase experiment power supply is connected with a three-phase conducting wire through three connecting circuits respectively, and the mutual inductance measuring device is connected with the connecting circuits respectively through connecting branches; during measurement, a grounding knife switch at the tail end of the three-phase conducting wire is firstly opened, so that the three-phase conducting wire is insulated from the ground; grounding knife switches at the top end of the three-phase conducting wire are respectively opened, a three-phase high-pressure experiment power supply is applied, a central point of the power supply is grounded, the current of each phase, three-phase circuit voltage and three-phase active power are measured through a current transformer and a voltage transformer, and positive sequence capacitance parameters are obtained through calculation. Compared with the prior art, the method is convenient to use and simple for measurement, and the measuring results of positive sequence capacitance are coincident through detection under the condition that adjacent parallel circuits are at different grounding conditions.
Owner:STATE GRID CORP OF CHINA +2
Method and device for time template measurement
ActiveCN101582727AMeet measurement requirementsMeasure impactTransmitters monitoringWireless communicationCurrent timeProcess module
The invention discloses a method for time template measurement, which comprises the following steps: according to the current time interval, directly outputting sampling data in transmitting period without passing through a root-raised cosine (RRC) filter; complementing sampling data during transmit-off power; and outputting the sampling data by the RRC filter. The invention also discloses a device for time template measurement, which comprises a resolution filter, an A / D sampling module and an RRS filter; the key is that the device also comprises a signal distinguishing and processing module;and the RRS filter further comprises a data complement module and an RRC filter module. The method and the device not only make the measurement for a transmitting time template accord with the code requirement, but also cannot influence the measurement of the transmit-off power.
Owner:DATANG MOBILE COMM EQUIP CO LTD
Method for measuring hematocrit levels, quantitative analysis method using said measurement method, and sensor chip
InactiveCN103946702ALow costAvoid generatingMaterial analysis by electric/magnetic meansTemporal changeOxidation-Reduction Agent
Owner:MURATA MFG CO LTD
Schlieren device used for test on high power laser far-field focal spot
The invention relates to a schlieren device used for a test on a high power laser far-field focal spot. The device comprises a light blocking sheet and a light transmission cover that is arranged outside the light blocking sheet. According to the invention, the schlieren device used for a test on a high power laser far-field focal spot is provided. The device has a good light blocking effect and a laser irradiation resistant performance; and there is no influence on measurement.
Owner:XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
Gas film rigidity measuring method of gas bearing
PendingCN113945344AReduce mistakesHigh measurement accuracyMachine part testingElasticity measurementMechanical engineeringBearing stiffness
The invention relates to a gas film rigidity measuring method of a gas bearing. In the method for measuring the gas film rigidity of the gas bearing, the to-be-measured gas bearing is fixed through the retainer, the retainer and the to-be-measured gas bearing form a spring mass system, an eccentric distance is formed between the to-be-measured gas bearing and a shaft system, and according to the vibration condition of the gas bearing, external excitation is applied to the to-be-measured gas bearing under the condition of no lubricating gas, the non-lubrication rigidity of the gas bearing is measured, the external excitation is applied to the gas bearing to be measured in the presence of lubricating gas, the composite rigidity of the gas bearing is measured, and then the rigidity obtained through two times of measurement is subtracted to obtain the gas film rigidity of the gas bearing. The rigidity of the gas bearing is calculated and measured according to the vibration condition of the gas bearing subjected to external excitation, the measurement error of the gas film rigidity of the gas bearing can be reduced, and the measurement precision of the gas film rigidity of the gas bearing is improved.
Owner:HENAN UNIV OF SCI & TECH
Flowmeter detection device
PendingCN113984151AFirmly connectedQuick connectionTesting/calibration apparatusControl theoryMechanical engineering
The invention discloses a flowmeter detection device. The flowmeter detection device comprises a first clamping part, a second clamping part, a first alignment part, a second alignment part and a driving device, the first clamping part and the second clamping part are arranged on a first fixing face and a second fixing face which are parallel to each other respectively, and the first clamping part and / or the second clamping part are / is connected through the driving device. The first alignment part is fixedly connected with the end face, facing the second clamping part, of the first clamping part, the second alignment part is fixedly connected with the end face, facing the first clamping part, of the second clamping part, the first clamping part is provided with an inflow channel, the outlet end of the inflow channel corresponds to the inlet end of the flowmeter in position, and the second clamping part is provided with an outflow channel; and the inlet end of the outflow channel corresponds to the outlet end of the flowmeter in position. According to the flowmeter detection device provided by the invention, the flowmeter can be quickly aligned and connected with an inflow pipeline and an outflow pipeline, the assembly and disassembly are convenient and quick, and the alignment precision of the flowmeter and the pipelines is high.
Owner:PETROCHINA CO LTD
Rock sample processing device
InactiveCN108362548APrevent dumpingEasy to handlePreparing sample for investigationRock sampleBiomedical engineering
The invention relates to a rock sample processing device. The rock sample processing device comprises a box body and a tray assembly, the box body has an end surface for supporting the tray assembly,the tray assembly comprises a carrier tray and at least one containing cup integrated with the carrier tray or embedded in and connected to the carrier tray, the lower part of the entire part of everycontaining up extends into the box body when the box body supports the carrier tray, and the box body has an accommodating space for accommodating the at least one containing cup. The at least one containing cup is located by the carrier tray, and the containing up to be filled with hydrochloric acid is determined according to the position of the containing cup, so hydrocarbon source rock samplescan be processed and managed in batches, and the confusion of operated objects, caused by too many containing cups and the floating of the containing cups is avoided; and the at least one containingcup is limited by the carrier tray, so the at least one containing cup is prevented from being fallen.
Owner:CHINA PETROLEUM & CHEM CORP +1
Experimental device for measuring magnetostrictive tiny deformation quantity
ActiveCN114114107AEasy to measureMeasure impactMagnetostrictive property measurementsEducational modelsOptical reflectionMechanical engineering
The invention discloses a magnetostriction tiny deformation quantity measurement experiment device, and relates to the field of magnetostriction variable measurement equipment, the magnetostriction tiny deformation quantity measurement experiment device comprises a mounting seat, the side part of the mounting seat is provided with a scale and a fixed optical reflector, the side part of the mounting seat is provided with a power supply, and the top part of the mounting seat is provided with a solenoid and a fixed block. During use, one end of a metal wire is firstly placed in the fixing hole in the fixing block, one end of the metal wire can be fixed through the fixing mechanism, then the metal wire penetrates through the fixing holes in the solenoid and the sliding block, and the other end of the metal wire can be fixed through the fixing mechanism. Then the solenoid can be powered on for detection through the power supply, the metal wire does not deviate during detection and is always located on the central axis of the solenoid, the detection precision can be improved conveniently, and meanwhile switching can be conducted through the elastic switching mechanism; therefore, when the contracted metal wire is measured, the measurement of the metal wire is not affected by the elastic switching mechanism.
Owner:SHANDONG UNIV OF TECH
Thermotechnical high-precision temperature measurement relay
ActiveCN105788969AReduce precisionClose contactThermometer applicationsElectromagnetic relay detailsTemperature controlElectronic component
A thermotechnical high-precision temperature measurement relay of the present invention belongs to the temperature control and overheating electronic component protection technology field, and comprises a relay body and a temperature measuring device, wherein the temperature measuring device is arranged at the side part of the relay body and comprises a fixing casing, a push rod motor, a fixing pipe, a first spring, a first fixing rod, a second fixing rod, a pressure sensor, a second spring, a draught fan, a first temperature sensor, a humidity sensor, a one-way valve, a second temperature sensor, a control device and an alarm. Compared with the prior art, according to the present invention, the second temperature sensor is separated from the relay body, and the push rod motor can push the second temperature sensor regularly to be contacted with the relay body to measure under the control of the control device, thereby avoiding the situation that the second temperature sensor suffers a high temperature for a long time, so that the precision of the second temperature sensor decreases.
Owner:STATE GRID CORP OF CHINA +1
Schlieren device used for test on high power laser far-field focal spot
Owner:XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
Electric control measuring cylinder type digital intelligent precipitation gauge
ActiveCN108732650ALow failure rateLow costProgramme controlRainfall/precipitation gaugesGraduated cylinderControl signal
The invention belongs to the technical field of a precipitation detecting device, and particularly relates to an electric control measuring cylinder type digital intelligent precipitation gauge. The invention provides the electronic precipitation gauge which has advantages of large bearable rain strength range and automatic fault alarm, namely the electric control measuring cylinder type digital intelligent precipitation gauge. The electric control measuring cylinder type digital intelligent precipitation gauge comprises a rain containing funnel and is structurally characterized in that the lower end of the rain containing funnel is provided with a buffering water containing tank; the lower end of the buffering water containing tank is connected with an upper inlet of a main measuring tubebody through a measuring cylinder upper electromagnetic valve; the lower outlet of the main measuring tube body is provided with a measuring cylinder lower electromagnetic valve. A precipitation measuring electrode, an auxiliary electrode and a main measuring tube fault detecting electrode on the main measuring tube body are connected with an electric control measuring cylinder driving board. A control signal output port of the electric control measuring cylinder driving board is connected with a control signal input port of the measuring cylinder upper electromagnetic valve and the control signal input port of the measuring cylinder lower electromagnetic valve. The electric control measuring cylinder driving board is connected with a single-chip microcomputer unit.
Owner:蒋丽华
Preparation and application of Raman enhancement substrates based on multi-layer composite structures
ActiveCN110412010AThe preparation method is simple and quickQuality improvementRaman scatteringNitrogenNitrogen gas
The invention relates to the technical field of trace molecule detection, in particular to preparation and application of Raman enhancement substrates based on multi-layer composite structures. The preparation method comprises the following steps that multiple substrates are placed on a quartz baseplate, an insulation part and a molybdenum sheet are placed on the upper surface of each substrate insequence, and the substrates are placed in pre-heated heating equipment for a thermal reaction; the substrates are taken out and cooled, the insulation parts are removed, and molybdenum oxide substrates are prepared; a SnCl2 solution with the concentration of 10 nmol / L is prepared, and the pH value of the SnCl2 solution is adjusted to 5-6; the prepared molybdenum oxide substrates are placed in the SnCl2 solution, placed in a pre-heated heating table for Sn ion interlayer intercalation, taken out and blow-dried through a nitrogen gun, and the Raman enhancement substrates based on the multi-layer composite structures are prepared. The preparation method is easy and quick to implement, an intralayer structure of molybdenum oxide is not changed, by introducing interlayer ions, doping is achieved, and the prepared substrates are stable in quality and high in sensitivity.
Owner:GUANGDONG FOOD & DRUG VOCATIONAL COLLEGE
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