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45results about How to "Meet the needs of measurement" patented technology
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Superconductive quantum bit measuring system
InactiveCN101059556AReduce noise interferenceAvoid noise disturbanceCurrent/voltage measurementMagnetic field measurement using superconductive devicesFiberAudio power amplifier
The invention provides a superconductive quantum bit measuring system, comprising a signal source which current signal output is connected with an object Josephson node with two ends respectively connected with two inputs of a low-noise amplifier, while the output of the low-noise amplifier is connected with the positive end of the amplifier, and the negative end of the amplifier is grounded, the output of the amplifier is connected with a stop end of a counter which start end is connected with a synchronous signal output of the signal source, the current signal output of the signal source and the object Josephson node are serially connected with a copper powder filter between, the current signal output of the signal source and the copper powder fiber are serially connected with a RC filter between. The inventive system can effectively reduce noise and meet the demand of superconductive quantum bit measurement.
Owner:NANJING UNIV
System and method for calculating flow
InactiveCN101299767AMeet the needs of measurementFlexible scalabilityTransmissionIndirect mass flowmetersData displayData acquisition
The invention relates to a flow computing system and a flow computing method, wherein the flow computing system comprises an analog-to-digital convert device, as the data collecting interface between the flow computing system and the measured quantity; a flow computing device, including a processor, a program memory arranged with a flow computing module and an communicating interface for data communication with the analog-to-digital convert device, wherein the flow computing module furthermore includes a hardware driving module, a local data collecting module, a data processing and operating module, a system flow controlling module and a data storing module. The flow computing system has the following functions: reading the measuring signals of the flow, the pressure, the temperature and the like transmitted by the one-time measuring device; performing the analog-to-digital conversion on the obtained one-time measured signals and performing the data display and the data storage; configuring the different output signals of the one-time device through the hardware and the software, to satisfy the measuring requirement, with agile system expandability.
Owner:ZHUHAI ORBITA AEROSPACE SCI TECH CO LTD
Quick cadastral survey measurement and data processing method based on real-time dynamic positioning technology
InactiveCN101105524AMeet the needs of measurementHigh precisionOptical rangefindersTransmission systemsDynamic positioningTotal station
A rapid cadastral survey and data processing method based on the real time dynamic positioning technique comprises detail point survey by the cooperative utilization of GPS-RTK, working base map and a total station instrument; the method is characterized in that the total station instrument establishes a station at random, obtains approximate position and approximate orientation by the utilization of working base map and forms survey station coordinates system according to the survey requirement of detail points; in the course of detail point survey, coordinates of common points at mapping coordinate system are obtained by the utilization of GPS-RTK and working base map; the coordinates of the common points at survey station coordinates are obtained by the utilization of total station instrument; the coordinate transformation of detail points from survey station coordinate system to mapping coordinate system is completed by the utilization of the common points; transformation accuracy is valuated.
Owner:SOUTHEAST UNIV
Device and method for measuring vibration frequency of tall building structure on the basis of Doppler radar
InactiveCN105115587AHigh measurement accuracyShort wavelengthSubsonic/sonic/ultrasonic wave measurementUsing wave/particle radiation meansPhysicsVIT signals
The invention discloses a device and method for measuring the vibration frequency of a tall building structure on the basis of a Doppler radar. The device comprises an AC power supply, a coupler, a driving amplifier, a power amplifier, an emitting antenna, a receiving antenna, a low-noise amplifier, and a mixer. The method comprises that the AC power supply generates a radiofrequency signal and the radiofrequency signal is divided into two sub radiofrequency signals by the coupler, wherein one sub radiofrequency signal is input into the mixer via the driving amplifier to provide a local oscillation signal and the other sub radiofrequency signal is input into the emitting antenna via the power amplifier to form an emitting signal; the emitting signal generates a reflected signal after reaching a vibrating target building structure and the reflected signal is received by the receiving antenna and is input into the mixer via the low-noise amplifier; the mixer mixes the received two signals and acquires a down-conversion signal in order to obtain Doppler frequency; and processing is carried out in order to finally obtain the vibration frequency of the target building structure. The method achieves noncontact measurement, has an all-weather operating characteristic, and is high in accuracy and good in realtimeness.
Owner:NANJING UNIV OF SCI & TECH
Non-contact human body appearance parameter measuring device
InactiveCN106097326AMeet the needs of measurementQuick measurementImage analysisDiagnostic recording/measuringHuman bodyChest circumference
The invention provided a non-contact human body appearance parameter measuring device. The device comprises an information acquisition module which is used for acquiring the height information and picture of a measured human body, a segmentation algorithm module which is used for dividing the human body and the background in the picture of the measured human body, a measurement algorithm module which is used for acquiring the appearance parameters of the measured human body, and an information storage module which is used for storing the appearance parameter information of the measured human body to realize the inquiry, calling and output of the stored information. According to the invention, the complete non-contact human body appearance parameter measuring device based on a mobile platform is provided; main human body appearance parameters of height, shoulder width, arm length, waist width, chest circumference, leg length, waist to foot length and the like are rapidly measured and visually displayed; the device has the advantages of simple operation, high automation degree and accurate measurement result, and effectively meets the need of human body appearance parameter measuring of clothing design, tailoring, mobile phone games and other industries.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Method for measuring real-time frequencies in protection device
ActiveCN107045081AMeet protectiveMeet the needs of measurementFrequency measurement arrangementFrequency measurementsElectric power system
The invention discloses a method for measuring real-time frequencies in a protection device. The method comprises the following steps that: step 1) fixed-interval sampling is performed on the whole cyclic waves of measured electrical signals; step 2) a calculation formula is obtained; step 3) N / 2 of the number of points is added to the value of the latter part of the calculation formula; step 4) angular frequency deviation is obtained through calculation; and step 5) a real-time angular frequency is calculated based on the angular frequency deviation, and conversion is performed on the real-time angular frequency, so that the real-time frequency of the measured electrical signals can be obtained. According to the method, the sinusoidal waveform characteristics of power frequency signals are utilized; fixed-interval sampling values are used, so that curve fitting and accumulation are performed, and therefore, frequency difference can be derived on the basis of a fixed power frequency, and therefore, an actual frequency value can be obtained. Since the actual frequency value can be obtained with few sampling points, no complex logic operation is involved in a measurement process, and therefore, the method can be implemented simply and efficiently; and the frequency measurement accuracy of the method in practical application can fully meet the relay protection and measurement requirements of a power system.
Owner:HENAN XJ INTELLIGENT CONTROL TECH
Modularized three-phase instrument calibrating device for smart grid
ActiveCN103383443AHigh precisionImprove stabilityElectrical measurementsOutput transformerSignal conditioning
The invention provides a modularized three-phase instrument calibrating device for a smart grid. The modularized three-phase instrument calibrating device comprises an input interface and an output interface, the input interface is connected with a signal conditioning module, the signal conditioning module is connected with a data analysis and processing module, the data analysis and processing module is connected with a man-machine conversation module, the man-machine conversation module is respectively connected with a voltage and current waveform control module and a three-phase angle sampling module, the output interface is respectively connected with the voltage and current waveform control module and the three-phase angle sampling module, a three-phase waveform generation module is connected between the voltage and current waveform control module and the three-phase angle sampling module and connected with a power amplifier output transformer module, and the power amplifier output transformer module is connected with the output interface. The modules are connected by the aid of a certain communication pattern, and maintenance convenience and use diversity of a system can be improved.
Owner:SHANGHAI INSTR RES INST
Optical power measuring device
InactiveCN104935376AMeet the needs of measurementAvoid troubleTransmission monitoring/testing/fault-measurement systemsElectricityOptical power meter
The invention discloses an optical power measuring device. The optical power measuring device comprises a measuring unit provided with a single-chip microcomputer. According to the scheme I, the optical power measuring device further comprises an MPO connector, first detectors whose number is identical with the number of channels of the MPO connector, and a multi-path switch. An output end of the multi-path switch is electrically connected with the measuring unit. The single-chip microcomputer is used for controlling the multi-path switch to output a current signal. Multi-path laser signals of a detected band-shaped optical fiber are respectively transmitted to the first detector through the plurality of channels of the MPO connector. The first detector converts the received laser signals into current signals and further transmits the current signals to a plurality of input ends of the multi-path switch. The current signals output by the multi-path switch are transmitted to the measuring unit. The optical power measuring device overcomes the shortage that an existing optical power meter can only carry out single-channel measurement, and has the advantage that the multi-channel measurement can be carried out conveniently and rapidly.
Owner:SHANGHAI GRANDWAY TELECOM TECH
Measurement method for daily operation state of urban rail transit vehicle
ActiveCN104228886AMeet the needs of measurementFlexible settingsRailway traffic control systemsDaily operationRail transit
The invention discloses a measurement method for a daily operation state of an urban rail transit vehicle, relates to the technical field of rail transit, and aims to solve the technical problems of poor reliability and high implementation cost of the conventional method. According to the method, a first acceleration component and a second acceleration component of a vehicle are measured by using an acceleration sensor, and the operation state of the vehicle is judged according to the measured values, wherein the first acceleration component of the vehicle indicates the acceleration component perpendicular to the vehicle heading direction; the first acceleration component represents the vibration condition of the vehicle; the second acceleration component of the vehicle indicates the acceleration component parallel to the vehicle heading direction; the second acceleration component represents the speed-up and speed-down condition in the vehicle heading direction. The method provided by the invention is applicable to monitoring the daily operation state of the urban rail transit vehicle.
Owner:SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI +2
Separated axle needle type prepeller wind gauge for measuring cylinder vortex
InactiveCN1434298ACompact designSimple structureFluid speed measurement using swirlflowmeterProximity sensorEngineering
The invention provides a separate-type axial-needle blade anemoscope measuring the vortex of the cylinder tube, the knock-down bush set on the inner side of the anemoscope body, the brackets of the circular axial-needle stand respectively set on two end surfaces of the inner side of the anemoscope body, and the adjustable axial-needle stand fixed on the midpoint of the thin knighthead fixed on the brackets, and two subulate points of the needle rotary axis set with the blade cooperating with the adjustable axial-pin stand; at least one opened hole right facing the blade set on the outer side,the approach sensor inserted in the hole and the rotary signal of the blade is output by the approach sensor.
Owner:TIANJIN UNIV
Method of separating rhenium and/or osmium from crude oil
The invention provides a method of separating rhenium and / or osmium from crude oil. The method comprises following steps: step one, adding water into a crude oil sample to carry out extraction and separation to remove rhenium and osmium in crude oil absorption water and absorption sediment particles; step two, adding C4-C8 alkane into the crude oil sample processed in the step one so as to precipitate asphaltene in the crude oil sample; step three, digesting precipitated asphaltene; step four, separating osmium from digested sample by an in-situ distillation method; and step five, separating rhenium from the sample processed in the step four through an acetone extraction method. The provided method can improve the precision and accuracy of measurement of Re and Os in a Re-Os isotope datingmethod, and the requirements on Re and Os measurement of the Re-Os isotope dating method can be satisfied.
Owner:CHINA PETROLEUM & CHEM CORP +1
Electrochemistry immuno-sensing method for detecting 2,4-dichlorphenoxyacetic acid in agricultural product
InactiveCN101769892AMeet the needs of 2,4-D assayMeet the needs of measurementMaterial analysis by electric/magnetic meansChemistryQuantitative determination
The invention relates to an electrochemistry immuno-sensing method for detecting 2,4-dichlorphenoxyacetic acid in agricultural products, mainly comprising the following steps: 1) coupling 2,4-dichlorphenoxyacetic acid with BSA; 2) preparing an electrode modification immunol sensor; 3) preparing a Goat anti Mouse IgG antibody with an HRP sign; 4) preparing a standard curve; and 5) detecting a sample. The invention has the beneficial effect that the Goat anti Mouse IgG antibody with an HRP sign is used for magnifying a signal and improving detection sensitivity so as to realize 2,4-D high-sensitivity quantitative determination. The method becomes liner relationship when 2,4-D density is within the range of 0.5-2,500 ng / mL and detection lower limit is 0.05 ng / ml, can better satisfy 2,4-D detection requirements in agricultural products, and has the advantages of simple method, reliable result, low cost and the like.
Owner:HUNAN AGRICULTURAL UNIV
Three-dimensional wake field testing device
PendingCN108458854AChange measurement areaQuick measurementHydrodynamic testingEngineeringTraining set
Owner:HUAZHONG UNIV OF SCI & TECH
Detection method for related substances in memantine hydrochloride preparation
ActiveCN103604876AMake up for poor separation abilityThe processing method is simpleComponent separationChemistryChromophore
The present invention relates to a detection method for related substances in a memantine hydrochloride preparation, wherein particularly a gas chromatography method is adopted to detect the related substances. Memantine hydrochloride has a stable structure and does not have chromophore, such that memantine hydrochloride is difficultly detected by using an ultraviolet detector. According to the present invention, the disadvantage of memantine hydrochloride is overcome, and defects of poor separation capability of the TLC method and emission of a lot of harmful waste gas of the evaporative light-scattering method are overcome; and the detection method has characteristics of accuracy, convenient operation, good reproducibility and high sensitivity, can completely meet requirements of determination on the related substance impurities, can be provided for controlling special impurities in samples and ensuring product quality, and is suitable for industrial production application.
Owner:RONGCHANG PHARM ZIBO CO LTD
Multiple-swing angle detection device based on light sensing positioner for multi-lifting-appliance bridge crane
ActiveCN110271966ASolve the problem of synchronous detectionMeet the needs of measurementLoad-engaging elementsLight sensingDielectric plate
The invention relates to a multiple-swing angle detection device based on a light sensing positioner for a multi-lifting-appliance bridge crane. A hole-shaped cold laser emitting block on a lifting appliance serves as an emitting light source of the cold laser; a cold laser refraction dielectric plate on a swing rope is used as a refraction medium of the cold laser; a light sensing positioning and receiving plate on the swing rope serves as a receiving device of a refraction light corresponding to the cold laser, and the position data of a laser point generated by the refraction light on the light sensing positioning and receiving plate are obtained when the the lifting appliance is in a swinging or a non-swinging state by arranging the light sensitive PN junctions of the array; and a laser point position calculation CPU calculates a swing angle during the lifting appliance swings according to the difference between the position data when the lifting appliance swings or does not swing. The multiple-swing angle detection device solve the problem of synchronous detection of the multiple lifting, multiple lifting appliances and multiple swing angles of the multiple lifting appliances, and the device is simple in structure and low in cost, easy to manufacture, high in anti-interference capability, free of severe weather influence, high in detection precision and high in measurement speed.
Owner:SHANGHAI MARITIME UNIVERSITY
Electronic balance
InactiveCN107314805AEasy to operateHigh measurement accuracyOscillations damping for weighingEngineeringAccuracy and precision
The invention relates to an electronic balance, comprising a base and a frame-shaped casing installed on the base, a frame-shaped cover is arranged inside the casing, a desiccant filling layer is arranged in the gap chamber between the casing and the cover, and the casing Sliding doors are arranged on the cover and the cover body, and a balance body is arranged inside the cover body on the base, and a weighing sensor is arranged in the balance body, and a load-bearing guide rod connected with the load cell is arranged on the balance body, and the load-bearing guide rod There is a weighing net on the top, and a weighing tray is connected under the weighing net. The bottom of the weighing tray is connected with a fluid pipeline leading to the outside through the corresponding position on the cover and the shell. It is easy to operate and easy to measure. High precision, stable mechanical structure, strong anti-interference ability, can discharge liquid or other impurities on the weighed object through the weighing net and fluid pipeline, stable measurement accuracy and long service life.
Owner:展义胜
Swing angle detection device for multi-hanger bridge crane
ActiveCN110294422AImprove operational efficiencyReduce work stressTrolley cranesLoad-engaging elementsGratingLight sensing
The invention provides a swing angle detection device for a multi-hanger bridge crane. According to the single-slit diffraction and light-sensing principles, hanger swing angle rotation information isconverted into an electric signal and a digital signal, and a diffraction pattern is generated through the diffraction of a single-slit grating. The stripe width and the bright stripe center positionof the light diffraction pattern are detected and processed by using a light-sensitive diode PN junction array and a digital-to-analog conversion chip, swing angle information of hangers and a load is calculated, and the calculated swing angle information is transmitted to crane operators for reference or fed back to a bridge crane control system for anti-shake control, so that the operation efficiency of the operators is improved, and the work pressure is reduced. The device is simple in structure, low in cost, simple to maintain, easy to manufacture, high in anti-interference capability, high in detection precision and high in measuring speed, is not affected by severe weather and can achieve accurate positioning, the swing angle can be obtained through conversion, and the requirement of actual bridge crane swing angle measurement can be met.
Owner:SHANGHAI MARITIME UNIVERSITY
Method for simultaneously determining sanshool and capsaicin in food
The invention discloses a method for simultaneously determining sanshool and capsaicin in food. The method comprises the following steps: 1) preparation of a mixed standard working solution; 2) configuration of an instrument; 3) drawing of a standard curve; 4) sample preparation; 5) sample solution preparation; 6) fixation of a constant volume; 7) chromatographic analysis; and 8) result analysis.The method for simultaneously determining sanshool and capsaicin in food of the invention has the characteristics of easiness, convenience, good accuracy and high sensitivity, effectively solves problems in monitoring the pungent and spicy taste of terminal products such as spicy gluten food, and presents practical application value.
Owner:HUNAN YUFENG FOOD IND
Embedded electroencephalogram impedance measurement system
InactiveCN112438740AHighly integratedSmall footprintResistance/reactance/impedenceSensorsFilter (signal processing)Signal processing
The invention provides an electroencephalogram impedance measurement scheme based on an embedded system. The embedded system comprises a signal acquisition system and a control system, and involves impedance value calculation and storage; when a lower computer acquisition system completes electroencephalogram data acquisition, the contact impedance between an electrode and the skin is measured inreal time, and impedance calculation in an upper computer and a lower computer can be supported; by configuring the parameters of ADS1299, the embedded system can separate electroencephalogram signalsfrom impedance measurement signals through a digital filter, so that the electroencephalogram signals and the impedance measurement signals cannot influence each other; impedance measurement in the lower computer is conducted, impedance values and electroencephalogram data are stored in SD cards in a BDF format at the same time, and reprocessing analysis is facilitated; and the impedance value ateach moment is used for evaluating the contact condition of the electrode and the skin at the moment, so that the quality of the electroencephalogram data acquired at the moment is judged, which plays a key role in signal processing. The scheme is high in impedance measurement precision, high in integration level, small in occupied space, and suitable for a mode that the lower computer independently collects electroencephalogram data and a mode that the lower computer works in cooperation with the upper computer.
Owner:NANJING UNIV
Combined temperature measuring frame and temperature measurement method in heat treatment furnace
ActiveCN108131960BMeet temperature measurement needsSimple structureFurnace componentsThermal treatmentMechanical engineering
The invention belongs to the field of temperature measurement, and particularly discloses a combined temperature measuring rack capable of adapting to spaces which are different in shape and size andneed to be subjected to temperature measurement, and a thermal treatment furnace internal temperature measurement method utilizing the combined temperature measuring rack for assisting in temperaturemeasurement. The combined temperature measuring rack includes at least one temperature measuring rack assembly, and each temperature measuring rack assembly is mainly assembled by a temperature measurement element supporting rod, a connecting rod and a connecting rod fixing clamp, and the structure is simple. During use, an appropriate number of components suitable in size can be selected and connected with one another into a whole part for assisting in temperature measurement according to the spatial size of a part which needs to be subjected to temperature measurement, temperature measurement demands of the spaces which are different in shape and size and need to be subjected to temperature measurement are met, and the combined temperature measuring rack is convenient and flexible to useand wide in application range. The temperature measurement element supporting rods are slidingly arranged on the connecting rods and can rotate around the connecting rods, correspondingly the positions and angles of the temperature measurement element supporting rods on the connecting rods can be adjusted according to demands, and the demand for carrying out measurement at various temperature measurement points can be met.
Owner:CDGM OPTICAL GLASS
Method for determining content of biological silicon in sedimentary rock
PendingCN111982887AReduce measurement errorThe content is accurately measuredPreparing sample for investigationAnalysis by thermal excitationMineralogyTitanium
The invention discloses a method for determining the content of biological silicon in sedimentary rock. The method comprises the following steps: 1) cleaning, grinding and drying sedimentary rock; 2)removing carbonates; 3) removing organic matters; 4) extracting to obtain an extracting solution; 5) performing sampling; and 6) determining the mass fraction of biological silicon. According to the method, an internal standard method is adopted for correcting the influence of the matrix effect (high-content sodium) on silicon, aluminum and titanium measurement, measurement errors are reduced, thecontent of aluminum and titanium can be used for correcting and deducting positive non-biological silicon, and the method can meet the requirement for measuring the content of biological silicon in sedimentary rock in oil and gas exploration.
Owner:CHINA PETROLEUM & CHEM CORP +1
Method for detecting related substances in 4-oxime methyl-1-naphthoic acid
The invention belongs to the field of pharmaceutical analysis, and discloses a method for detecting related substances in 4-oxime methyl-1-naphthoic acid. The method comprises the following steps: preparing a reference substance solution and a test solution, determining chromatograms of the reference substance solution and the test solution by using high performance liquid chromatography, and determining the content of the related substances according to a main component self-contrast method. The detection method has the advantages of high specificity, high separation degree, excellent linear relation, high sensitivity, short analysis time and the like, can meet the detection requirements of related substances in 4-oxime methyl-1-naphthoic acid, and is suitable for popularization and application.
Owner:LIVZON NEW NORTH RIVER PHARMA
On-line measurement method for parameters of airport power transmission cable
PendingCN114325177ASimple measurement processSmall amount of calculationElectrical testingSingle phaseNeutral line
The embodiment of the invention relates to an on-line measurement method for parameters of an airport power transmission cable. The method comprises the following steps: establishing a three-phase four-wire asymmetric circuit model; a test power supply is not added, and current phasors of each phase line and a neutral line of the three-phase four-line power transmission cable are measured on line; adding a single-phase or double-phase test power supply, and carrying out online measurement on current phasors of each phase line and a neutral line of the three-phase four-line power transmission cable; calculating according to two times of online measurement to obtain a calculation formula of parameters of the power transmission cable; and according to the power supply voltage output by the aviation ground power supply and the current phasor measured by the added single-phase or double-phase test power supply, calculating to obtain the numerical value of the electric cable parameter. According to the embodiment of the invention, the three-phase four-wire asymmetric circuit model is established and is measured by using the single-phase or bidirectional test power supply, so that the parameters of the three-phase four-wire power transmission cable of the aviation ground power supply system can be accurately measured, the measurement process is simple, the calculated amount is small, and the measurement precision can meet the requirements of actual engineering measurement.
Owner:SHAANXI HUANGHE GROUP
Permanent-magnetic hierarchical testing device for content of magnetic substance powder
InactiveCN101620260BOperation saves time and effortMeasurement data error is smallMagnetic property measurementsMagnetic sourceReciprocating motion
Owner:HENAN POLYTECHNIC UNIV
Multi-swing angle detection device for multi-spreader bridge crane based on optical sensor locator
ActiveCN110271966BLow costEasy to manufactureLoad-engaging elementsLight sensingInterference resistance
The invention relates to a multiple-swing angle detection device based on a light sensing positioner for a multi-lifting-appliance bridge crane. A hole-shaped cold laser emitting block on a lifting appliance serves as an emitting light source of the cold laser; a cold laser refraction dielectric plate on a swing rope is used as a refraction medium of the cold laser; a light sensing positioning and receiving plate on the swing rope serves as a receiving device of a refraction light corresponding to the cold laser, and the position data of a laser point generated by the refraction light on the light sensing positioning and receiving plate are obtained when the the lifting appliance is in a swinging or a non-swinging state by arranging the light sensitive PN junctions of the array; and a laser point position calculation CPU calculates a swing angle during the lifting appliance swings according to the difference between the position data when the lifting appliance swings or does not swing. The multiple-swing angle detection device solve the problem of synchronous detection of the multiple lifting, multiple lifting appliances and multiple swing angles of the multiple lifting appliances, and the device is simple in structure and low in cost, easy to manufacture, high in anti-interference capability, free of severe weather influence, high in detection precision and high in measurement speed.
Owner:SHANGHAI MARITIME UNIVERSITY
Mask plate, semiconductor device and method for manufacturing semiconductor device
ActiveCN113296351BMeet the needs of measurementImprove yieldOriginals for photomechanical treatmentWaferDevice material
The invention relates to a mask plate, a semiconductor device and a method for manufacturing the semiconductor device. The mask plate is used to form a pattern on a wafer through exposure, including a scribe pattern, a first pattern and a second pattern. The scribe pattern is used for The dicing region of the wafer forms dicing streets, and the dicing street pattern includes oppositely disposed first and second ends. The first pattern is located at the first end and is used to form a first test element group pattern in the dicing line. The second pattern is located at the second end and spaced apart from the first pattern for forming a second test element group pattern in the cutting line. Wherein, when a plurality of exposure patterns exposed by mask plates are formed on the wafer, the first test element group pattern of one of the two adjacent exposure patterns and the second test element group pattern of the other exposure pattern Set of patterns adjoining.
Owner:CHANGXIN MEMORY TECH INC
Current summation method for internal bridging line independent of circuit breaker and position of disconnecting link
ActiveCN102540072BMeet the needs of measurementLow costCircuit interrupters testingSmart substationHigh pressure
Owner:赵春雷 +1
Absorption tower pH and density measuring device for preventing blocking with rinsing water
PendingCN106706739AMeet the measurement requirementsMeet the needs of measurementMaterial electrochemical variablesSpecific gravity measurementRinse waterSlurry
The invention provides an absorption tower pH and density measuring device for preventing blocking with rinsing water. The absorption tower pH and density measuring device for preventing blocking with rinsing water comprises a mass density meter, a Venturi tube, a pH meter, a pH meter measuring cylinder and an overflow pipe, wherein a measuring pipeline is led out of the bottom of the absorption tower and connected to the top end of the mass density meter; the bottom end of the mass density meter is connected to the bottom end of the pH meter measuring cylinder through a Venturi-tube-bearing pipeline; a measuring electrode of the pH meter is installed on the top end of the pH meter measuring cylinder and extends to the inside of the pH meter measuring cylinder; the top end of the pH meter measuring cylinder is provided with the inverted-U-shaped overflow pipe; and the height of the U-shaped top of the overflow pipe is greater than that of the top end of the pH meter measuring cylinder. The measuring device solves the problem of great measurement errors of pH value and density of the slurry in the absorption tower in the prior art, and enhances the measurement accuracy. The rinsing water system is arranged and used for rinsing the gypsum slurry measuring pipeline or gypsum slurry lead-out measuring pipeline when the pipeline is blocked or the measured value is abnormal.
Owner:武汉立为工程技术有限公司
Detection method for related substances in memantine hydrochloride preparation
ActiveCN103604876BStabilization methodSimple processing methodComponent separationUltraviolet detectorsMemantine Hydrochloride
The present invention relates to a detection method for related substances in a memantine hydrochloride preparation, wherein particularly a gas chromatography method is adopted to detect the related substances. Memantine hydrochloride has a stable structure and does not have chromophore, such that memantine hydrochloride is difficultly detected by using an ultraviolet detector. According to the present invention, the disadvantage of memantine hydrochloride is overcome, and defects of poor separation capability of the TLC method and emission of a lot of harmful waste gas of the evaporative light-scattering method are overcome; and the detection method has characteristics of accuracy, convenient operation, good reproducibility and high sensitivity, can completely meet requirements of determination on the related substance impurities, can be provided for controlling special impurities in samples and ensuring product quality, and is suitable for industrial production application.
Owner:RONGCHANG PHARM ZIBO CO LTD
A method for simultaneous determination of xanthoxylin and capsaicin in food
ActiveCN108645923BImprove linearityMeet the needs of measurementComponent separationBiotechnologyGluten
The invention discloses a method for simultaneous determination of xanthoxylin and capsaicin in food, comprising the following steps: 1), preparation of mixed standard working solution, 2), instrument configuration, 3), drawing standard curve, 4), sample preparation , 5), sample solution preparation, 6), constant volume, 7), chromatographic analysis, 8), result analysis. The invention provides a method for simultaneous determination of xanthoxylin and capsaicin in food, which has the characteristics of simplicity, quickness, good accuracy and high sensitivity, effectively solves the problem of numbness and spiciness monitoring of terminal products such as spicy gluten food, etc. practical application value.
Owner:HUNAN YUFENG FOOD IND
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