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120results about How to "Realize in-situ measurement" patented technology

Method and device for in-site measuring gas hydrate and deposit sediment heat stability containing hydrate

The invention provides a method and the setting used for insite measuring the thermonature of the gaseous hydrate and the sediments which containing hydrate. The said measuring system includes a gas inlet and outlett systems; a temperature control system, a high presser viarable capacitied reactor; a hydraulic transmission system; a observing and control gathering system. The said method includes the following steps the reacting gas entering the high pressure viarable capacital reactor which immersed in the temperature control system through gas inlet and outlet system,and reacting with the other reactants in the high pressure variable capcity reactor to produce gaseous hydrate or hydrate sediments on constant temperature and pressure condition controlled by the temperature control system and hydraulic driving system seperatively;last,measuring the thermophysical property of the produced gaseous hydrate or hydrate sediments by the observing and control gathering system. The design of the invention can meet the synthesis of different types and quantity of hydrate and realizes the insite measurement of the thermophysical property of the hydrate.
Owner:GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI

Honeycomb core surface shape measuring method

The invention discloses a honeycomb core surface shape measuring method, which is characterized by comprising the steps of: coating a reflective film on a surface to be measured of a honeycomb core, and adopting a vacuum adsorption method so that reflecting film is closely adhered to the surface to be measured of the honeycomb core and the reflecting film at honeycomb hole lattices is recessed downwards; and carrying out scanning measurement on the reflecting film on the surface to be measured of the honeycomb core to obtain honeycomb wall heights of the honeycomb core at different spatial positions. The honeycomb core surface shape measuring method has the advantages of being high in measurement precision, low in usage cost, high in measurement efficiency, good in applicability, rich in acquired information and capable of realizing in-suit measurement.
Owner:DALIAN UNIV OF TECH

Blade in-situ contact type three-dimensional measurement device and method

The invention belongs to the technical field of blade measurement and discloses a blade in-situ contact type three-dimensional measurement device and method. The blade in-situ contact type three-dimensional measurement device comprises a working table, an X-directional motion platform, a Y-directional motion platform, a measurement mechanism and a rotating platform, wherein the X-directional motion platform is arranged on the Y-directional motion platform, and the Y-directional motion platform is arranged on the working table to form a two-dimensional motion platform; the measurement mechanismis arranged on the X-directional motion platform and moves in X and Y directions along with the two-dimensional motion platform; blades are mounted on the rotating platform and driven by the rotatingplatform to rotate. The blade in-situ contact type three-dimensional measurement method comprises maintaining constant-force contact between the measurement mechanism and the blades, reading the linear displacement of the measurement mechanism in the X and Y directions and the rotating angle theta of the blades through a grating rule and a rotary encoder, and performing coordinate transformationand bulb radius compensation to acquire the surface contour coordinates of the blades. The blade in-situ contact type three-dimensional measurement device has the advantages of being convenient to move, simple in measurement process and low in cost and can achieve precise in-situ measurement of the blades.
Owner:HUAZHONG UNIV OF SCI & TECH

Method for testing expansion of anode sheet of lithium ion battery

ActiveCN102636142AExpansion rate is accurateExpansion rate truly reflectsMeasurement devicesCyclic processElectrical battery
The invention belongs to the technical field of a lithium ion battery and particularly relates to a method for testing the expansion of a pole sheet of a lithium ion battery. The testing method comprises the following step of: adhering a layer of a lithium ion insulating material to an anode sheet or a separation membrane before assembling, or removing a certain area of cathode coating by using a solvent so that no lithium ion is embedded into an anode area corresponding to adhering area or the part of a cathode without a coating in a charging process. Therefore, the expansion of the anode sheet can be measured in a charging / discharging process and a circulating process in situ. Compared with the traditional anode expansion testing method, the testing method is used for accurately calculating the anode expansion in the charging / discharging and circulating processes according to the thickness difference of the same anode sheet at different positions, thereby eliminating influences caused by other factors, such as initial thickness difference among the different pole sheets; the obtained result is more accurate and the uniformity is better. The testing method not only can test the expansion rate of a dual-face area of the anode, but also can accurately test the expansion rate of a single-face area of the anode. Furthermore, the testing method provided by the invention is simple and easy to operate, is high in generality and is convenient to actually operate.
Owner:NINGDE AMPEREX TECH +1

Focusing plane positioning device and method of laser micro-beam back irradiation chip test

The invention provides a focusing plane positioning device of a laser micro-beam back irradiation chip test. The focusing plane positioning device used for performing focusing plane positioning on a to-be-tested device comprises a laser source (1) for the test, a focusing light path adjusting module (2), an imaging CCD module (3), a three-dimensional movable platform (4) and a three-dimensional movable platform control module (5), wherein the laser source (1) is used for transmitting fixed-parameter pulse laser; the focusing light path adjusting module (2) is used for adjusting the pulse laser transmitted by the laser source (1); the imaging CCD module (3) is used for imaging the laser reflecting light spot of the to-be-tested device; the three-dimensional movable platform (4) is used for placing the test circuit board of the to-be-tested device; the three-dimensional movable platform control module (5) is used for receiving the reflecting light spot signals output by the imaging CCD module (3) and forming a feedback signal instruction after imaging contrast detecting to automatically adjust the positions of the three-dimensional movable platform (4).
Owner:NAT SPACE SCI CENT CAS

Near field non-standard light source-based in situ obtaining method for three dimensional polishing scratch shapes

A near field non-standard light source-based in situ obtaining method for three dimensional polishing scratch shapes is disclosed. Six LED lights uniformly distributed on a hand held microscope are used as light sources, an illumination model for non-standard light sources is built in near field conditions, relative spatial positions of the light sources are calibrated, the hand held microscope isused for collecting image data of worn-out surfaces of parts, a Mask image is obtained based on image processing technologies, images under the same viewpoint and different light sources are subjected to background difference processing operation, an object image which requires three dimensional rebuilding is obtained, and a final three dimensional polishing scratch shape is rebuilt via iterationbased on combination of a technology for estimating a normal direction based on an image sequence and a technology of recovering surface shapes from the normal direction. According to an actual lightsource position, the illumination model for the near field non-standard light sources is built via use of the method disclosed in the invention after photometric stereo visual near field non-standardpoint light sources are adopted, the method can meet requirements of real measurement conditions, and calculation precision of normal vector and depth information of worn-out surfaces can be improved.
Owner:XI AN JIAOTONG UNIV

Alkali metal atomic magnetometer air chamber electric heating magnetic field measurement method

The invention relates to an alkali metal atomic magnetometer air chamber electric heating magnetic field measurement method. For a conventional measurement method, a magnetic field produced after an air chamber electric heater is electrified is measured using other kinds of magnetometers. The measurement method is affected by the size and installation position of the magnetometer adopted, and in-situ measurement cannot be realized. Moreover, the measurement accuracy is not high due to the limitation of the sensitivity of the magnetometer. While in the method of the invention, an SERF (Spin-Exchange-Relaxation-Free) atomic magnetometer three-dimensional in-situ magnetic compensation technology is used to measure a magnetic field sensed by atoms when a DC power supply drives an electric heater and a magnetic field sensed by atoms when a high-frequency modulation circuit drives the electric heater, and subtraction is performed on the two magnetic fields to get the size of the electric heating magnetic field. By using the method, in-situ measurement is realized, and the position error of measurement is eliminated. Moreover, because of the use of the measurement information of an atomic magnetometer, the accuracy of measurement is greatly improved.
Owner:BEIHANG UNIV

Water quality automatic monitoring floating platform

The invention discloses a water quality automatic monitoring floating platform which belongs to the technical field of water quality monitoring equipment and is used for water quality monitoring of large-area and flowing water. The technical scheme is that: the water quality automatic monitoring floating platform consists of a floating platform, monitoring boxes, a monitoring sensor, data acquisition and transmission devices and solar energy power supply devices; the monitoring boxes are arranged on the floating platform; the data acquisition and transmission devices are arranged in the monitoring boxes; the monitoring boxes are arranged in a water body; the monitoring sensor is connected with the data acquisition and transmission devices in the monitoring boxes through transmission wires; and the solar energy power supply devices are arranged on the floating platform and the monitoring boxes and are connected with the data acquisition and transmission devices and the monitoring sensor respectively. The water quality automatic monitoring floating platform can finish the water quality automatic monitoring task under the unattended condition in a field, can realize in site measurement of the water quality of the preset water area, perform vessel-mounted water quality automatic monitoring, and realize the long-distance, wide-section and multi-point water quality monitoring.
Owner:HEBEI SAILHERO ENVIRONMENTAL PROTECTION HIGH TECH

Battery fire safety experimental system and experimental method using in situ measurement technology

InactiveCN107677966AIn situ measurement in real timeReal-time mechanical propertiesChemical analysis using combustionTesting electric installations on transportGas analysisBattery charge
The invention discloses a battery fire safety experimental system and experimental method using an in situ measurement technology. The battery fire safety experimental system and experimental method using the in situ measurement technology can be used for simulating the thermal disaster event when a battery is overheated, overcharged and loaded so as to preferably understand the thermal disaster characteristics of the battery and guide the battery safety design. The battery fire safety experimental system and experimental method using the in situ measurement technology can realize controllableand stable mechanical loading of the battery by taking a mechanical tester as a basic experiment platform, can realize overcharged and over-heated conditions of the battery on the same platform by means of expanded battery charge and discharge system and battery heating system, can utilize the in situ measurement technology to complete real-time monitoring of the stress, the strain, the calorificparameters, the temperature, the pressure, the infrared thermal imaging data, high speed imaging, and the gas analysis data, and can improve safety of the experimental system through an explosion-proof case.
Owner:BEIHANG UNIV

Plant growth condition monitoring device and method based on unmanned aerial vehicle

The invention discloses a plant growth condition monitoring device and method based on an unmanned aerial vehicle. A blue LED array is adopted in an image monitoring module to replace a laser to serve as a fluorescence excitation light source, so that the size and weight of the excitation light source are greatly reduced, and the plant growth condition monitoring device is suitable for being used in the low-load unmanned aerial vehicle; besides, an electron multiplication CCD unit is adopted to collect fluorescence dynamic images of plants at night, and thus both fluorescence two-dimensional distribution information of a whole shooting area and comprehensive fluorescence dynamic attenuation information can be obtained. According to the plant growth condition monitoring device and method, the unmanned aerial vehicle flies along a path planned in advance and hovers at a designated shooting site, meanwhile, the fluorescence dynamic images are shot, and the unmanned aerial vehicle returns automatically after flying along the path planned in advance. Leaf dark adaptation is not needed, and thus measurement time is shortened; besides, in-situ measurement of plants is achieved, and thus the physiological growing state of plants can be reflected more accurately.
Owner:元谋县常荣农业发展有限公司

Total alkalinity measurer

A total alkalinity measuring apparatus relates to a water body total alkalinity determining device which provides a water body total alkalinity measuring apparatus suitable for environment monitoring and industrial water treatment. The invention is provided with a water sample inlet, two reagent pumps, a mixer, a temperature sensor, an optical splitting system, a CO2 removing device, an eight-channel valve, a reagent bag, an amount fixing ring, a waste liquid outlet, a liquid circulating pipeline, a control circuit and a sealing shell. The water sample inlet and the waste liquid outlet are arranged on the shell; two reagent pumps are respectively connected with the eight-channel valve and the reagent bag; an inlet of the mixer is connected with an outlet of the reagent pum; the temperature sensor is arranged in the mixer and the optical splitting system consists of an optical source, a circulating pool, an optical splitting element and an optoelectronic detector; an inlet of the circulating pool is connected with an outlet of the mixer; an inlet of the CO2 removing device is connected with an outlet of the circulating pool; the reagent bag is connected with the inlet of the reagent pump; the amount fixing ring a section of annular tube used for storing acid; the control circuit is connected with the reagent pumps, the eight-channel valve, the temperature senor and the optical splitting system.
Owner:XIAMEN UNIV

Photo-thermal interference apparatus by using Herriott cell to measure aerosol absorption and method thereof

The invention discloses a photo-thermal interference apparatus by using Herriott cell to measure aerosol absorption and a method thereof. According to the invention, three ways of interference light are designed, an upper way and a lower way of interference light are used for detecting gradual change of ambient temperature and phase baseline drift due to platform vibration, and then self-correction is formed, an intermediate way of detection laser transmits in the Herriott cell, under prerequisite that a laser light path is not changed, prolongation with order of magnitude of effective effect length of the detection laser can be obtained by the excitation laser, cooperation of the intermediate way of detection laser as well as the upper way and the lower way of interference light can be used for obtaining the phase change due to excitation laser, and on-line detection of aerosol absorption coefficient is realized. According to the invention, the Herriott cell is used for prolonging the effective effect distance so that the detection sensitivity of a photo-thermal interferometry is greatly increased, and phase difference settlement gets rid of angle interval restriction by a phase modulation-demodulation mode.
Owner:HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI

Water channel urine protein optical label-free specific detection device and method

The invention discloses a water channel urine protein optical label-free specific detection device and method. The device includes optical fiber engraved with tilted fiber grating, a sulfhydryl compound and an AQP2 antibody; the side and the end face of the optical fiber are respectively plated with a layer of metal film with different thicknesses to form an optical fiber sensing probe; the sulfhydryl compound self-assembles into a monomolecular film on the metal film of the optical fiber side, and the AQP2 antibody is fixed on the monomolecular film surface through a catalyst; after fixation of the AQP2 antibody, the optical fiber sensing probe is immersed into a urine stock solution containing AQP2 antigen, and polarized light is input into optical fiber, the characteristic that the metal film surface plasma resonance wave of the optical fiber side is sensitive to the external environment change is utilized to detect the specific binding of AQP2 antigen and AQP2 antibody. The device and the method provided by the invention can realize specific detection of water channel urine protein, replace wavelength demodulation technique with amplitude modulation technique, the detection process is free of label to a detection sample, and also has the advantages of simplicity and speediness, etc.
Owner:JINAN UNIVERSITY

Measurer for oceanic sediment thermal conductivity in-situ measuring system

This invention relates to a measurer for oceanic sediment thermal conductivity in-situ measuring system, which comprises: a measuring probe, an attitude detection circuit, a thermal impulse excitation circuit, a temperature collection circuit, a CPU, I / O, and a memory. Wherein, the measuring device comprises: a. a memory; b. an input device; c. a detection device; d. a calculation device to calculate the thermal conductivity by formula k=0.029275*Q / (Tmtm) and store the data in an EFPROM; e. an output device. This device improves measurement precision by filter, high-bit A / D conversion and complex algorithm, cuts time to 1~2min, and has simple structure with light weight for convenient communication.
Owner:THE FIRST INST OF OCEANOGRAPHY SOA

An in-situ observation method for gas arc electrode splashing ablation

The invention relates to an in-situ observation method for gas arc electrode sputtering ablation, which comprises the following steps of: irradiating the surface of an electrode by adopting high-powerlaser, and filtering arc light by utilizing a narrow-band filter to obtain an image for representing an electrode sputtering ablation behavior in an arc combustion process; using a Gaussian-Laplacianedge operator to filter the original image to achieve complete separation of arc light and an electrode, and obtaining the edge of the splashing liquid drop; Reconstructing the splashing liquid dropand extracting position and shape information of the splashing liquid drop based on an image gray threshold binaryzation method, and obtaining a motion track of the splashing liquid drop through framesuperposition; And obtaining the spatter ablation rate based on a multi-target particle matching algorithm. Through the combination of an optical imaging means and a digital image processing technology, visualization and in-situ measurement of the electrode ablation behavior in the arcing process are achieved, testing of the gas arc ablation behavior is expanded, the method provides a direct anduseful scientific basis for in-depth and complete understanding of the gas arc-electrode mechanism and the process of sputter ablation..
Owner:XI AN JIAOTONG UNIV

Spherometer with adjustable measuring diameter, and measuring method for radius of curvature and offset

The invention discloses a spherometer with an adjustable measuring diameter, and a measuring method for radius of curvature and offset. The spherometer comprises an indicating gauge and a fixed base for mounting the indicating gauge, wherein the fixed base is provided with at least three vertical guide rails peripherally by regarding the center of a through hole as the center, the spherometer further comprises a lifting platform capable of sliding up and down relative to the vertical rails, the fixed base is provided with a plurality of base chutes spaced apart from the vertical guide rails peripherally by regarding the center of the through hole as the center, and the base chutes are provided with sliders capable of sliding on the base chutes. The three sliders are driven by the lifting platform to move closer to or away from the center so as to realize the measurement of workpieces of different diameters without replacing the measuring ring, and the whole device takes up small spaceand is simple and convenient. Three legs simultaneously move in the diameter direction to perform a centering function, so that the measuring head of the indicating gauge is aligned with the center ofsphere of the workpieces, and the measurement is more accurate. A locking mechanism can be used to lock at a specified position at any time, and the operation is simple and convenient.
Owner:XI AN JIAOTONG UNIV

Device and method for in situ measurement of energy distribution of focused laser faculae

The invention relates to a device and method for in situ measurement of energy distribution of focused laser faculae. The device is fixed on a high-precision translation stage by a bracket, wherein a bore for fixing a bore part is formed on a desktop of the bracket; a lens of a microscope is vertical to the bore part; a collecting lens is arranged under the bore of the desktop; the collecting lens is connected to a detector through an optical fiber; the detector is used for acquiring a transmitted laser signal and inputting the laser signal to a data processor; and an energy distribution chart of the laser faculae is acquired after the measured data are processed by the data processor. The measuring method comprises the following steps: confirming the bore position by utilizing the microscope and focusing the lasers to the bore position; adjusting and setting an exposure time of the detector; scanning and exposing according to a set step width; and supplying the energy distribution chart of the laser faculae by the data processor. According to the device and method, the accurate measurement for the energy distribution of the focused laser faculae is realized by utilizing the bore part to scan the laser faculae and coupling the acquired laser signal to the high-sensitivity detector with a wide dynamic response scope.
Owner:THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA

Small-size rotating type diamond anvil cell press device

InactiveCN106442168AOvercome the inability to apply shear to the sampleRealize in-situ measurementMaterial strength using steady shearing forcesBall bearingEngineering
The invention discloses a small-size rotating type diamond anvil cell press device, and belongs to the technical field of physical quantity in-situ measuring devices under high-temperature high-pressure conditions. The small-size rotating type diamond anvil cell press device structurally comprises a rotating rod inserting hole (1), ball bearings (2), pressurizing screws (3), belleville springs (4), an upper outer press cylinder (5), an inner press piston (6), a lower outer press cylinder (7), fastening screws (8), diamond anvils (9), a spacer (10), a sample cavity (11), support blocks (12), a scale disc (13), a rotating rod (14) and scale disc lines (15). The small-size rotating type diamond anvil cell press device is simple in structure and small in size, vertical pressurization, rotational pressurization or simultaneous vertical rotation and pressurization can be achieved, an upper anvil and a lower anvil can be rotated for any angle relative to each other, and a shearing function can be effectively adjusted.
Owner:JILIN UNIV

Visualization experiment system and method for measuring representation contact angle under high temperature and high pressure environments

The invention discloses a visualization experiment system and method for measuring a representation contact angle under high temperature and high pressure environments. The visualization experiment system is characterized by comprising an air distributing device, a testing device, a sampling device, a vacuum device, a pressure regulating device, an optical imaging device and a monitoring device, and mainly consists of the equipment such as an air compressor, a high pressure gas cylinder, a gas pressurizer, a high pressure buffer container, a reducing valve, a mechanical pressure gauge, a hightemperature and high pressure visual container, a pressure transmitter, a one-way control valve, a micrometeor high pressure plunger pump, a cold light source, a vacuum pump, a vacuum buffer container, a temperature controller, a condenser, a back pressure valve, a CCD camera, an image analyzer and the like. The measurement of the contact angle under high temperature and high pressure environments, even in a super-critical state of water, can be realized, and the system is particularly applicable to infiltration behavior research of water on a metallic surface under high temperature and high pressure environments. The visualization experiment system has the advantages of high working condition parameters, wide application range, convenient and flexible operation, long service life, convenience in expansion and modification and the like.
Owner:ZHEJIANG UNIV

In-situ optomagnetic non-orthogonal angle measurement method based on double-beam three-axis vector atom magnetometer

The invention discloses an in-situ optomagnetic non-orthogonal angle measurement method based on a double-beam three-axis vector atom magnetometer. The method can be used to reduce a system error of the three-axis vector atom magnetometer , has significance in research a new generation of ultrahigh-sensitivity three-axis magnetic field and inertia measurement device, and can be applied to magneticfield and inertia measurement in various fields in the future, especially in the aspects of physical fundamental research, geological exploration, military national defense, biomedical treatment andthe like. The method is characterized by comprising the following steps that two light beams are input into an alkali metal gas chamber in a three-axis vector atom magnetometer measuring device, the first light beam is input along the X-axis direction of the alkali metal gas chamber, and the second light beam is input along the Z-axis direction of the alkali metal gas chamber, the first and secondlight beams spin-polarize alkali metal atoms in the alkali metal gas chamber in a time-sharing manner, and non-orthogonal angle information is obtained from difference between magnetic field vector responses of the two light beams sensitive to the same axis.
Owner:BEIHANG UNIV

Electron polarizability biaxial in-situ measurement system and method of SERF atom magnetometer

The invention discloses an electron polarizability biaxial in-situ measurement system and method of the SERF atom magnetometer. A first polarization splitting prism which divides laser emitted by a detection laser into two parts is arranged in a detection laser module, and the first beam of detection laser penetrates through an alkali metal gas chamber along the X axis so as to measure electron polarizability information of a detection axis; after being coupled with pumping light formed by the pumping laser module, a second beam of detection laser passes through the alkali metal gas chamber along the Z axis to measure the electron polarizability information of the pumping axis, and the electron polarizability Px of the detection axis is measured in situ by measuring the rotation angle thetax in the X-axis direction; according to the pumping axis electron polarizability Pz, in-situ measurement is achieved by measuring the Z-axis direction rotation angle thetaz, online measurement of alkali metal electron biaxial polarizability can be completed when the SERF atom magnetometer works normally, and the measurement efficiency is improved.
Owner:BEIHANG UNIV

Atom magnetometer light frequency shift stable control system

The invention belongs to the technical field of an atom magnetometer and specifically relates to an atom magnetometer light frequency shift stable control system. Two beams of detection light generated by a detection light module and one of two beams of drive light generated by a drive light module are converged in an atom air chamber. The two beams of detection light extract precession information of atoms in the atom air chamber pumped by the two beams of drive light, thereby realizing independent magnetic field measurement. Photoelectric conversion is carried out on the two beams of detection light, and then the two beams of detection light are input into a phase-locked amplifier A and a phase-locked amplifier B for signal processing. After proportion and integral steps are carried outon output signals of the phase-locked amplifier A and the phase-locked amplifier B, an output frequency of a DDS is set according to the output signal of the phase-locked amplifier A. The DDS drives an exciting coil. The atoms in the atom air chamber are locked at a resonance point. The output frequency of the DDS is locked on a precession frequency of the atoms in real time, thereby realizing outer magnetic field measurement. After the output signal of the phase-locked amplifier B is compared with a set value, the drive light module is controlled, thereby realizing light frequency shift stable control.
Owner:BEIJING AUTOMATION CONTROL EQUIP INST

Method for expressing gamma/gamma' phase crystal lattice mismatching degree in nickel-based high-temperature alloy

The invention relates to a method for expressing the gamma / gamma' phase crystal lattice mismatching degree in nickel-based high-temperature alloy. According to the method, conventional diffraction and omega swinging curve testing technologies are combined, a two-dimensional scanning mode is obtained, an isostrength map of diffraction information is expressed by a two-dimensional positive space or reverse space, the position of the diffracted crystal surface is obtained, the crystal lattice constant of the diffracted crystals is obtained, then, the two-phase mismatching degree is calculated according to the crystal lattice constant, the crystal lattice constant and the mismatching degree determined in the mode have better mean value significance, errors are reduced to the maximum degree, and higher accuracy is realized. The method provided by the invention has the advantages that the sample preparation is simple, the operation is convenient, the in-situ measurement of blocky solid can be realized, in addition, the samples rotate, the diffraction regions are increased, or even an embedded structure is reflected out, the requirement on equipment is not high, used x-ray equipment only needs to be capable of realizing the independent rotation of an incidence angle (samples) and an diffraction angle, the smaller distribution divergence of diffraction points in the reverse space is the better, and the best distribution is dotted distribution.
Owner:ELECTRIC POWER RES INST OF GUANGDONG POWER GRID +2

Rotating shaft system rotational inertia in-situ measurement device

The invention relates to a rotating shaft system rotational inertia in-situ measurement device. Standard rotational inertia blocks are installed at the top end of a shaft system, the given angle is generated by using a motor driving system and then released, and the shaft system is driven to freely vibrate by using a torsion spring; and the free vibration period is measured by a laser interferometer, testing is performed by using more than two standard rotational inertia blocks, and the no-load rotational inertia of the shaft system can be obtained through calculation. The mechanical structure of a dynamic torque calibration system and a measurement system are utilized, and in-situ measurement of the no-load shaft system rotational inertia can be realized by increasing one torsion spring and electromagnetic clutch so that the structure is compact and the measurement accuracy is high.
Owner:BEIJING CHANGCHENG INST OF METROLOGY & MEASUREMENT AVIATION IND CORP OF CHINA

In-situ measurement system and method for low-frequency acoustic characteristics in seabed sediments

The invention discloses an in-situ measurement system and method for low-frequency acoustic characteristics in seabed sediments. The device comprises a bearing frame, a control cabin, a hydraulic cabin, a vertical feeler lever penetration mechanism and a horizontal feeler lever supporting mechanism are arranged in the bearing frame, a lifting ring is arranged at the top end of the bearing frame, and two receiving transducers which are vertically arranged at intervals are fixedly arranged at the bottom end of a vertical feeler lever; the horizontal feeler lever supporting mechanism comprises adriving device fixedly arranged on the bearing frame, the output shaft of the driving device is perpendicular to and fixedly connected with one end of the horizontal feeler lever, the driving device can drive the horizontal feeler lever to rotate with the output shaft as the center axis, and a transmitting transducer is arranged at the other end of the horizontal feeler lever. A control circuit isarranged in the control cabin, a penetration oil cylinder pressure sensor electrically connected with the control circuit is arranged in the hydraulic cabin, and the control circuit is electrically connected with the display control system through a cable. According to the invention, in-situ measurement of propagation characteristics of medium-low frequency sound waves in sediments is realized.
Owner:THE FIRST INST OF OCEANOGRAPHY SOA +1

Granular measuring device and in-situ measuring method thereof

Disclosed are a particle type measuring device and an original site measuring method. The device places one or more sensors, microprocessors, the system power and the communicating device in the particle type shell. The particle can sense its own motion and field information. The original site measuring method can be realized by employing the particle type measuring device, which comprises taking the particle device as the researching object, placing it in the field to be researched, sensing and recording the information of its motion and the located field.
Owner:TSINGHUA UNIV

Marine soil resistivity measuring method and device

The invention discloses a marine soil resistivity measuring method and device. The device comprises a probe bar which comprises a top tank, a bar body and a probe. The bar body is connected with the top tank and the probe. The top tank is provided with a hook. A built-in power supply, a control circuit, a constant current source circuit, a data acquisition circuit, a sensing circuit and an acceleration sensor which is connected with the sensing circuit are formed in the top tank. An electrode sequence is formed on the probe. The electrode sequence comprises two power supply electrodes and at least two measuring electrodes. The power supply electrodes and the measuring electrodes are communicated with the outside and are arranged on the probe. The power supply electrodes are connected with the constant current source circuit through a wire located in the bar body. The measuring electrodes are connected with the data acquisition circuit through a wire located in the bar body. According to the invention, in-situ, fast and accurate measurement of the resistivity of marine soil in a certain depth is realized.
Owner:OCEAN UNIV OF CHINA

Method for measuring surface profile of honeycomb core

ActiveCN110487210AHigh-precision data stitchingHigh measurement accuracyUsing optical meansNumerical controlHoneycomb
The invention discloses a method for measuring the surface profile of a honeycomb core, which comprises the steps of scanning the honeycomb core according to a specified path; respectively calculatingan installation error angle [alpha]Z of a linear laser measuring head around the Z-axis, an installation error angle [alpha]y of the linear laser measuring head around the Y-axis and an installationerror angle [alpha]x of the linear laser measuring head around the X-axis by using the scanned profile data; driving a sensor to scan the surface of the honeycomb core to be measured according to thespecified path by a numerically-controlled machine tool; unifying the measured data measured under a linear laser coordinate system to a global coordinate system through coordinate transformation according to the installation error angles and the operation coordinates of the measuring head; and splicing the honeycomb data measured under each path to obtain the surface data of the whole honeycomb core to be measured. The method effectively solves the problem that it is difficult to determine the installation error angle of the linear laser. The method has the advantages of convenient operation,high precision, high adaptability and low cost, and can meet the measurement requirements of the actually processed honeycomb core surface.
Owner:DALIAN UNIV OF TECH

Analog heat source chip and manufacturing method thereof

The invention discloses an analog heat source chip. The analog heat source chip is characterized in that the surface of the chip has analog heat source resistors and temperature sensors; and the analog heat source resistors and the temperature sensors are all thin film planar resistors. Through the integration of the analog heat source resistors and the temperature sensors, large power heating canbe realized, and the temperature gradient change situations of the whole chip can be accurately and in real time measured; through the adjustment of the positions of the temperature sensors, the in-situ measurement of the heat dissipation characteristics in different areas of a microchannel heat dissipator can be realized, so that the hot fluid performance of the heat dissipator can be accuratelyanalyzed; and the chip is simple in structure and manufacturing technology and convenient in measuring process.
Owner:SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP

Optical microscope beam splitter device

InactiveCN104267488ARealize white light imaging observatioRealize in situ observationRaman scatteringMicroscopesBeam splitterMeasurement point
The invention discloses an optical microscope beam splitter device which comprises a beam splitter shell and a beam splitter cover plate. The beam splitter cover plate is used for guaranteeing that space in the beam splitter shell does not leak light. Two sets of beam splitting sheet fixing frames are arranged in the beam splitter shell in parallel, one set is used for white light imaging observation, and the other set is used for spectral measurement. A switching mechanism used for switching the two sets of beam splitting sheet fixing frames is further arranged in the beam splitter shell. An in-situ observation white light imaging focus point and a laser in-situ measurement point of a measured sample are kept consistent by switching a double-beam-splitting-sheet white light imaging observation module and a spectral measurement full-reflection mirror module, the utilization ratio of light intensity of incoming lasers and the efficiency of collecting light signals (raman scattering light or fluorescent light) from the sample are improved, and the testing space resolution and testing sensitivity are improved.
Owner:CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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