44results about How to "Simplify the measurement steps" patented technology

The invention discloses a water quality comprehensive toxicity high-throughput determination method, which comprises the following steps: performing exposure contamination on a tested organism by using a sewage sample to obtain phenotypic characteristic data of the tested organism; constructing a toxicity matrix; establishing a machine learning model, and determining the water quality comprehensive toxicity of the sewage sample in combination with the toxicity matrix. The water quality comprehensive toxicity determination method provided by the invention does not need sample concentration and enrichment, ensures the comprehensiveness and accuracy of the detection result, and can be applied to the comprehensive toxicity high-flux determination of the sewage in the whole process of a sewage treatment plant.

The invention discloses a clutch assembly detection device and a detection method, and particularly relates to the technical field of detection equipment, the clutch assembly detection device comprises an equipment main body, the equipment main body comprises a fixed seat, a display screen, a torque measurement part, a distance measurement part and a pressure measurement part, the torque measurement part comprises a torque sensor, a coupler is fixedly connected to the torque sensor, and the distance measurement part is connected with the pressure measurement part. The distance measuring part comprises an annular plate, a plurality of connecting rods are arranged in the annular plate, the distance measuring part comprises a pushing frame, a baffle is arranged on the pushing frame, a supporting plate is arranged on the right side of the annular plate, a laser range finder is arranged at the left end of the supporting plate, the pressure measuring part comprises a release bearing, and a pressure sensor is arranged at the left end of the release bearing. According to the invention, the free stroke and separation stroke data of the clutch assembly can be visually measured, the measurement method is simplified, the detection precision and the detection efficiency are improved, and the output torque of the motor under different loads can be measured according to the displacement data variation.

The invention discloses a clutch assembly detection device and a detection method, which specifically relate to the technical field of detection equipment, including an equipment main body, the equipment main body including a fixed seat and a display screen, a torque measuring part, a distance measuring part and a pressure measuring part, the torque measuring part including a torque sensor, a coupling is fixedly connected to the torque sensor, a rotating shaft is fixedly connected to the fixed seat, the distance measuring part includes an annular plate, a plurality of connecting rods are arranged in the annular plate, the distance measuring part includes a pushing frame, a baffle is arranged on the pushing frame, a support plate is arranged on the right side of the annular plate, a laser rangefinder is arranged at the left end of the support plate, the pressure measuring part includes a release bearing, and a pressure sensor is arranged at the left end of the release bearing. The invention can directly measure the free stroke and release stroke data of the clutch assembly, simplify the measurement method, improve the detection accuracy and detection efficiency, and can measure the output torque of the motor under different loads according to the displacement data change.

The invention discloses a cable bending radius measuring device and measuring method, the measuring device comprises a measuring plate, and at least one side edge of the measuring plate is an arc-shaped bending edge; a wire diameter mark is arranged on one side of the arc-shaped bent edge of the measuring plate, and the wire diameter mark is used for marking the cross sectional area of the cable; the bending radius of the arc-shaped bending edge is set to be the minimum bending radius of the cable with the cross sectional area; the cable bending radius measuring device can replace visual observation or a ruler to measure the bending radius of a cable, the measuring accuracy and efficiency are improved, the bending radius of the cable is prevented from being smaller than the required minimum bending radius, and therefore it is guaranteed that the bending radius of the cable meets the requirement, and safe use of the cable is facilitated.

The invention discloses copper column CCD inspection equipment, and particularly relates to the field of copper column measurement, the copper column CCD inspection equipment comprises a box body, a workbench is fixedly arranged on the box body, the copper column CCD inspection equipment further comprises a transferring assembly, a measuring assembly and an anti-interference assembly, the transferring assembly is used for transferring a copper column and the measuring assembly, the measuring assembly comprises a plurality of cameras arranged on a supporting frame and the box body respectively, and the cameras are arranged on the supporting frame and the box body respectively. The measuring assembly is used for measuring the copper column, the anti-interference assembly comprises a first shielding piece and a second shielding piece, and the first shielding piece and the second shielding piece are both used for shielding the copper column. Different positions of the copper column are shielded at different time through the first shielding piece and the second shielding piece, and meanwhile the angle of a triangular prism is adjusted, so that the copper column can be accurately measured. Only the position needing to be reflected is reflected, the threaded hole, the chamfer, the long hole and the step of the copper cylinder can be rapidly measured respectively, and the measurement efficiency and accuracy of the copper cylinder are improved.

The invention provides a building structure contour line measuring device and method, the measuring device comprises a positioning main body, an axis positioning mechanism and a contour positioning mechanism, and the positioning main body is used for positioning the center of a building structure to be paid off; the axis positioning mechanism is arranged on the positioning body and used for determining the orientation of the positioning body through the first laser face. The contour positioning mechanism movably sleeves the positioning body and projects a second laser surface at a set included angle to form a contour line parallel to the side wall of the positioning body. The device can easily, accurately and conveniently complete the measurement of the contour line of the building structure, is simple in structure, is easy to manufacture, is simple and convenient to operate, can be suitable for the measurement of the contour lines of the building structures with various section shapes and specifications, simplifies the measurement steps, reduces the labor intensity of measurement personnel, and remarkably improves the measurement efficiency and the measurement precision.

The utility model provides an anchor cable drilling angle measuring device which comprises three measuring rods which are arranged side by side in parallel and are adjustable in length, a locking mechanism which is arranged on the measuring rods and is used for fixing the length of the measuring rods, and a plurality of positioning pieces which are arranged along the length direction of the measuring rods, the adjusting mechanism is connected to the end portion of the measuring rod and used for adjusting the diameter of the positioning piece, the protractor is arranged at the end portion of the adjusting mechanism in the axis direction of the measuring rod, and the plumb bob assembly is connected with the center point of the protractor. A stable system is formed among the measuring rod, the positioning piece and the drill hole, it can be ensured that the measuring device and the drill hole are in a coaxial state, measurement errors caused by shaking or deviation of the device are effectively prevented, the accuracy and reliability of measurement are improved, the protractor is used in cooperation with the plumb bob assembly, and the measuring accuracy and reliability are improved. The angle measurement is more visual and accurate, the operation is simple, and the measurement working efficiency is improved.

The present invention discloses a DC high-voltage power supply measuring device and a measuring method. The measuring device comprises a shell, wherein a baffle is provided in the inner cavity of the shell to separate the inner cavity of the shell into a power supply chamber, an access chamber, an isolation chamber and a sampling chamber; a power supply circuit module is provided in the power supply chamber for providing DC power; a high-voltage terminal is provided in the access chamber to be electrically connected to the output end of the high-voltage power supply to be measured; an isolation circuit module is provided in the isolation chamber, the isolation circuit module is electrically connected to the power supply circuit module, and the input end of the isolation circuit module is electrically connected to the high-voltage terminal; a sampling circuit module is provided in the sampling chamber, the sampling circuit module is electrically connected to the power supply circuit module, and the input end of the sampling circuit module is electrically connected to the output end of the isolation circuit module, and the output end of the sampling circuit module is electrically connected to a display device. The measuring device greatly simplifies the measuring steps and improves the convenience of detecting the DC high-voltage power supply while ensuring safety.

The invention provides a current detection device, system and method, and relates to the technical field of electromagnetic compatibility testing. The current detection device comprises a support and further comprises an electromagnetic body, a conversion connector and a pointer which are installed on the support, the pointer is rotationally connected with the support through a rotating shaft, the end, away from the support, of the rotating shaft is connected with the electromagnetic body, the electromagnetic body is used for driving the pointer to deflect, and the conversion connector is electrically connected with the electromagnetic body. The conversion connector comprises a moving contact and a fixed contact which are used for conducting electricity, the fixed contact is fixedly installed on the support, the moving contact is fixedly connected with the pointer, the pointer is configured to enable the moving contact to abut against the fixed contact when the pointer is fully deviated, and the conversion connector is configured to switch a current path to enable the electromagnetic body to be short-circuited when the moving contact is connected with the fixed contact. When the current detection device is used for measuring the standby current of the DUT, the current detection device can be directly connected in series with an ampere meter with a larger range to measure the working current. The invention has the effect of continuously measuring the standby current and the working current of the DUT so as to simplify the measurement process.

The utility model discloses a fixing device for spectral measurement of a large-size optical filter. The fixing device comprises a light barrier, a center measurement mechanism and an edge measurement mechanism, a light through hole penetrates through the light barrier; a first movable backup plate in the center measuring mechanism is movably arranged on a first mounting bottom plate through a first guide limiting structure, so that the first movable backup plate is close to a first fixed side plate to form a first optical filter fixing cavity, and the first optical filter fixing cavity is arranged corresponding to the light through hole to realize the light splitting effect of detecting the center position of the optical filter to be detected; a second movable backup plate in the edge measuring mechanism is movably arranged on a second mounting bottom plate through a second guide limiting structure, so that the second movable backup plate is close to a second fixed side plate to form a second optical filter fixing cavity, the second optical filter fixing cavity is arranged corresponding to the light through hole, and the second mounting bottom plate is movably arranged on a limiting sliding seat; and the second optical filter fixing cavity is driven to transversely move relative to the light through hole, so that the light splitting effect of the to-be-detected optical filter at different edge positions at the same height is detected.

The invention relates to the field of machine manufacturing, in particular to a dovetail groove rapid measurement method and tool, and the method comprises the steps: detecting the opening width of a trapezoidal groove based on a first cuboid sub-block and a second cuboid sub-block, and enabling the bottom width of the first cuboid sub-block to be larger than the design width of an upper opening of the trapezoidal groove, and enabling the bottom width of the second cuboid sub-block to be larger than the design width of a lower opening of the trapezoidal groove; the width of the bottom surface of the first cuboid sub-block is smaller than the designed width of the upper opening of the trapezoidal groove; the groove bottom included angle of the trapezoidal groove is detected based on a first right-angle triangular prism and a plurality of cuboid measuring sub-blocks, the bottom face of the first right-angle triangular prism is provided with an acute angle equal to the design value of the groove bottom included angle, and the cuboid measuring sub-blocks are the same in bottom face height and different in bottom face width. According to the invention, the first cuboid sub-block and the second cuboid sub-block are adopted to rapidly and accurately measure the width of the trapezoidal upper opening of the dovetail groove, and qualified products with the upper opening width can be screened out; by arranging the first right-angle triangular prism and the second cuboid block, the first groove bottom included angle and the second groove bottom included angle are measured, unqualified products are classified and recycled, and the machining cost and the product reject ratio are reduced.

The utility model discloses a building corner angle measuring device, which relates to the technical field of building decoration measurement, and comprises a chord length measuring component, a chord height measuring component and a central angle measuring structure, the chord length measuring component comprises a first positioning seat, a spool and a second positioning assembly; the surface of the spool is connected with a flexible measuring scale roll through a volute spring, one end of the flexible measuring scale roll is straightened to form a linear measuring part, and the chord height measuring part comprises a third positioning seat. According to the utility model, by arranging the linear measuring part capable of directly measuring the chord length, the chord length of the arc-shaped corner can be obtained by determining the measuring positions of the first positioning seat and the second positioning seat, and meanwhile, the angle value of the central angle corresponding to the arc-shaped corner can be rapidly obtained by keeping the moving position of the third positioning seat; the step of measuring the central angle of the arc-shaped corner is greatly simplified, and the measurement precision can be improved compared with traditional measurement steps.

The present invention provides a current detection device, system and method, which relate to the field of electromagnetic compatibility testing technology. A current detection device includes a bracket, and also includes an electromagnetic body, a conversion joint and a pointer installed on the bracket. The pointer is rotatably connected to the bracket through a rotating shaft, and the end of the rotating shaft away from the bracket is connected to the electromagnetic body. The electromagnetic body is used to drive the pointer to deflect, and the conversion joint is electrically connected to the electromagnetic body. The conversion joint includes a moving contact and a fixed contact for conducting electricity. The fixed contact is fixedly installed on the bracket, and the moving contact is fixedly connected to the pointer. The pointer is configured to make the moving contact abut against the fixed contact when fully deflected, and the conversion joint is configured to switch the current path to short-circuit the electromagnetic body when the moving contact and the fixed contact are connected. The above-mentioned current detection device is used to measure the standby current of the DUT, and can be directly connected in series with an ammeter with a larger range to measure the working current. The present invention has the effect of continuously measuring the standby current and working current of the DUT to simplify the measurement process.

The invention discloses a method and a device for measuring complex permittivity of a wave-transmitting material based on a radiometer, and belongs to the technical field of passive microwave / millimeter wave remote sensing and detection. The method comprises the steps that N (N > = 3) material samples with different thicknesses are prepared, the thicknesses are recorded as d [d1, d2, d3..., dN], and the thicknesses of the samples should be smaller than the skin depth of the materials, so that it is guaranteed that electromagnetic waves can effectively penetrate through the samples; measuring the linear polarization transmittances of the material samples with all the thicknesses under the incident angle theta, and recording the linear polarization transmittances as gamma [gamma 1, gamma 2, gamma 3... gamma N]; fitting an output loss index factor Q (epsilon r, theta) and a Fresnel reflectivity Tp (epsilon r, theta) by using a fitting algorithm according to a calculation formula of the transmissivity of the wave-transparent material; and calculating a complex dielectric constant epsilon r by using Q (epsilon r, theta) and Tp (epsilon r, theta). The unique solution of the complex dielectric constant of the wave-transparent material can be obtained, and accurate measurement of the complex dielectric constant of the wave-transparent material is achieved.

This application provides a portable aircraft ground power vehicle voltage rapid detection device, belonging to the field of voltage detection technology. The device includes: a DC voltmeter A, a DC voltmeter B, a first switch K1, a second switch K2, a first pin, a second pin, a third pin, a fourth pin, a fifth pin, and a sixth pin. The third and sixth pins are connected by a first wire, and the first switch K1 is connected in series with the first wire. The fourth and fifth pins are connected by a second wire, and the second switch K2 is connected in series with the second wire. The first terminal of DC voltmeter A is connected to the first pin, and the second terminal of DC voltmeter A is connected to the first switch K1 and the third pin. The first terminal of DC voltmeter B is connected to the first switch K1 and the third pin, and the second terminal of DC voltmeter B is connected to the second pin. Voltage values ​​can be quickly obtained from DC voltmeters A and B.

The present application relates to a kind of tool measuring method and system based on UG / NX software, based on UG / NX software, comprising: the tool model created after using reverse scanning device to scan cutting tool is obtained;Obtain the key features of the cutting tool set;Obtain the key parameters of the cutting tool set;Based on the tool model, key features and key parameters, using static installation size automatic measurement algorithm and / or static non-installation size automatic measurement algorithm, the automatic measurement calculation of static installation geometric dimension and / or static non-installation geometric dimension of cutting tool is carried out on the tool model;Output the measurement data calculated by static installation size automatic measurement algorithm and / or static non-installation size automatic measurement algorithm.The present application combines reverse scanning and UG / NX software, can greatly improve the measurement accuracy and measurement efficiency of tool, improve product quality, bring more economic benefits for enterprise.

The utility model relates to the technical field of chamfer dimension measurement, and discloses a detection structure for chamfer measurement, which comprises a placing table, a light-emitting plate, a fixing plate, a limiting block and a measuring mechanism, a center table is arranged in the center of the placing table; a plurality of sets of light-transmitting grooves distributed in the circumferential direction are formed between the containing table and the center table. The light-emitting plate is arranged in the placing table and located below the light-transmitting groove. The fixing plate is arranged at the bottom end of the placing table, is positioned below the light-emitting plate and is used for fixing the light-emitting plate in the placing table; the limiting block is arranged on the placing table, is positioned on the outer side of the light-transmitting groove and is used for limiting the product; and the measuring mechanism is arranged above the center of the placing table and is used for measuring the size of the product.

The application discloses a device and a method for measuring the local density of states of a sound field, and the measuring device comprises a sound source, a square waveguide, a MEMS silicon microphone and an acoustic vector sensor; one end of the square waveguide is connected with the sound source, and the other end is embedded with the MEMS silicon microphone and the acoustic vector sensor which are attached to the inner wall of the square waveguide. By measuring the particle velocity of the end surface of the waveguide, the volume flow rate of the waveguide into the measured structure can be obtained, and the local density of states of the measured structure can be calculated by combining the sound pressure obtained by the MEMS silicon microphone. The application overcomes the difficulty that the volume flow rate of the sound source in a narrow area cannot be accurately measured by using the vector detection technology, realizes the experimental measurement of the local density of states of the sound field, can be applied to the characterization of acoustic structural materials, and provides guidance for the design of acoustic radiation structures.

The utility model relates to the technical field of scanning box installation position measurement, in particular to an electron accelerator centering measurement support which comprises a group of side frames arranged in parallel, a top plate frame, a laser range finder and a sliding frame. According to the utility model, by designing the side frame, the top plate frame and the laser range finder, a user can conveniently place the centering measurement bracket in the middle of the conveying cylinder according to feedback data of the laser range finder and judge whether the scanning box is centered or not according to the positions of the bottom of the scanning box and the top plate frame, so that the measurement steps are simplified, and the measurement efficiency is improved. And the measurement efficiency is improved.

This utility model discloses a standard gauge railway gauge calibrator, comprising a fixed beam and a movable beam, with the movable beam positioned on top of the fixed beam. Fixed seats are located at both ends of the fixed beam. A rotating shaft is mounted on top of the right-side fixed seat, and the movable beam is movably mounted on top of the rotating shaft. An ultra-high value reproduction device is located on top of the left-side fixed seat, and an electric push rod is located on the outer side of the left-side fixed seat, with its top connected to the bottom left end of the movable beam. This utility model features an electric push rod, the top of which is connected to the bottom left end of the movable beam. When the movable beam needs to be raised for measurement, this can be easily achieved using the electric push rod, greatly saving manpower. Simultaneously, the electric push rod operates stably, effectively reducing the overall shaking of the calibrator and avoiding the instability factors caused by manual operation, significantly improving measurement accuracy and making the measurement process easier and more reliable.

The invention relates to a rubber material technology, in particular to a rapid determination method for a surface free energy polarity parameter of a reinforcing filler for rubber. The invention provides a method for rapidly measuring polarity parameters of surface free energy of a reinforcing filler for rubber, which comprises the following steps: preparing a filler chromatographic column, installing the filler chromatographic column in a chromatographic instrument column box, and setting a carrier gas flow and a column box temperature observation base line; after the base line is stable, specific substances are sequentially injected, and related adjustment retention time is recorded; calculating a logarithm value for adjusting retention time, making a linear graph and establishing a regression equation to obtain a slope and an intercept value; and calculating an equivalent carbon atom number and a Gibbs free energy polarity part of the polarity probe molecule, and further obtaining a surface free energy polarity parameter. Specific conditions and parameter selection in each step, such as packed column specification, carrier gas flow, polar probe molecule selection and the like, are explained, and specific steps for calculating the number of equivalent carbon atoms are elaborated in detail. According to the method, the process is simplified, and the determination efficiency is improved.

The invention provides an articulated arm type coordinate measuring machine measuring head calibration method based on a ball fitting model, and relates to the technical field of precision measurement methods, and the method specifically comprises the following steps: building a D-H model of an articulated arm type coordinate measuring machine according to the nominal structure parameters of the articulated arm type coordinate measuring machine, and calculating the center coordinates of a measuring ball through the D-H model. The radius of the measured standard ball is calculated by measuring the surface coordinates of the standard ball according to the articulated arm type coordinate measuring machine. Establishing a to-be-calibrated parameter vector, wherein the to-be-calibrated parameter vector comprises the length of the measuring rod, the radius of the measuring ball and the center of the standard ball; and the to-be-calibrated parameter vector is used as an initial value, and the optimal to-be-calibrated parameter is searched through optimization iteration by using the central particle swarm optimization. According to the technical scheme, the problems that in the prior art, an articulated arm type coordinate measuring machine is low in measuring head calibration precision, large in measuring data size and complex in measuring step are solved.

The utility model provides a building structure contour line measuring device, which comprises a positioning main body, an axis positioning mechanism and a contour positioning mechanism, and is characterized in that the positioning main body is used for positioning the center of a building structure to be paid off; the axis positioning mechanism is arranged on the positioning body and used for determining the orientation of the positioning body through the first laser face. The contour positioning mechanism movably sleeves the positioning body and projects a second laser surface at a set included angle to form a contour line parallel to the side wall of the positioning body. According to the utility model, the contour line of the building structure can be measured easily, accurately and conveniently, the device is simple in structure, easy to manufacture, simple and convenient to operate and suitable for measuring contour lines of building structures with various section shapes and specifications, the measuring steps are simplified, the labor intensity of measuring personnel is reduced, and the measuring efficiency and the measuring precision are remarkably improved.

The application discloses a method for determining the content of aluminum in thionyl chloride solution of aluminum trichloride by complexometric titration, and relates to the field of complexometric titration in analytical chemistry. After a sample is hydrolyzed under a closed condition, aluminum ions are combined with an excessive amount of disodium ethylenediaminetetraacetate solution under the condition that the pH value is about 3.0. Then, the excessive amount of disodium ethylenediaminetetraacetate is titrated by using dimethylphenyl orange as an indicator and a zinc chloride standard titration solution under the condition that the pH value is about 6.0. The method has the advantages of convenient sampling safety, simple determination steps, easy mastering, short analysis time and accurate detection result.

The invention discloses a water-adding-free underground gas content analyzer in the field of gas content analysis. The water-adding-free underground gas content analyzer comprises a shell. A measuring cylinder and a contrast barrel are arranged on one side in the shell side by side, a first ultrasonic transmitter and a first ultrasonic receiver are arranged at the top and the bottom of the measuring cylinder respectively, and a second ultrasonic transmitter and a second ultrasonic receiver are arranged at the top and the bottom of the contrast barrel respectively. A coal sample chamber is arranged on the right side of the shell; an air outlet of the air blower is connected with a three-way pipe, one end of the three-way pipe is communicated with the coal sample chamber, and the other end of the three-way pipe is communicated with the contrast barrel. The upper end of the coal sample chamber is connected with a connecting pipe, and the other end of the connecting pipe is communicated with the measuring cylinder. The gas content can be measured without adding water, measurement steps are simplified, and measurement errors caused by water are avoided.

A programmable RCM motion precision measurement method, the programmable RCM motion implementation device includes a surgical mechanical arm and an end effector mounted on the surgical mechanical arm; the end effector is used for carrying a surgical tool and providing operating power; a measuring device includes a binocular camera and a visual auxiliary marker point, and is used for collecting a homogeneous transformation matrix between the end effector and the binocular camera. The programmable RCM motion precision measurement method of the present application obtains the precision of the RCM point and the RCM constrained motion through optimal calculation by collecting the homogeneous transformation matrix of the marker coordinate system fixedly connected with the end effector relative to the camera coordinate system. The method of the present application provides an important evaluation basis for evaluating the programmable RCM motion algorithm.

The application discloses a method and device for measuring complex permittivity of wave-transparent material based on radiometer, and belongs to the field of passive microwave / millimeter wave remote sensing and detection technology. The method comprises the following steps: preparing N (N>=3) material samples with different thicknesses, and recording the thicknesses as d [d1, d2, d3…, d N ]; the thickness of each sample should be smaller than the skin depth of the material to ensure that electromagnetic waves can effectively penetrate the sample; measuring linear polarization transmittance of the material samples with all the thicknesses at an incident angle θ, and recording the transmittance as γ [γ1, γ2, γ3…, γ N ]; using a fitting algorithm to fit the output loss index factor Q (ε r , θ) and the Fresnel reflectivity T p (ε r , θ) according to the calculation formula of the transmittance of the wave-transparent material; and calculating the complex permittivity ε r using the Q (ε p , θ) and the T r (ε r ). The application can obtain a unique solution of the complex permittivity of the wave-transparent material, and realize accurate measurement of the complex permittivity of the wave-transparent material.

The utility model discloses a road surface brightness coefficient measuring device adopting a high-power light source. The road surface brightness coefficient measuring device comprises a shading shell, a high-power lighting device, two cameras and a computer, the shading shell comprises a 1 / 4 spherical panel with the sphere center being a point O, and the inner face of the shading shell is a light receiving screen which is formed by a matte white coating and conforms to Lambert cosine reflection characteristics. The light receiving screen is divided into a plurality of areas by the shading plates which are arranged in a latticed manner; the high-power lighting device comprises a shell, a high-power LED lamp and a light source light emitting pipeline, a concave curved surface reflector, an illuminometer and a concave lens are arranged in the shell, a downward 1-degree included angle is formed between the light emitting direction of the light source light emitting pipeline and the horizontal plane, and the light emitting direction passes through a point O; the concave lens is perpendicular to the light emitting direction. Diaphragm groups are sequentially arranged in the light source light emitting pipeline along the light emitting direction; and the two cameras transmit the shot images on the light receiving screen to the computer. The device is used for rapidly and accurately measuring the brightness coefficient of any point on the road surface.

The invention discloses a method and a system for measuring anisotropic thermal conductivity of a small-size single crystal sample, and the method comprises the following steps: providing a film sample or a small-size single crystal material sample of which the thickness is greater than 50 microns, and vertically fixing a plurality of samples in a mold in different crystal face orientations; the sample is polished, so that the crystal faces exposed in different directions are all polished and ground, and the crystal faces in different orientations are all exposed; the anisotropic thermal conductivity of the material is calculated by measuring the in-plane thermal conductivity and the out-of-plane thermal conductivity of the sample. The system comprises a mold for fixing a sample, a polishing machine for performing graded polishing on the sample, and a thermal conductivity measuring instrument for measuring the in-plane and out-plane thermal conductivity of the sample. According to the measurement method disclosed by the invention, a plurality of samples are respectively fixed in different crystal face orientations, a certain interface is intercepted during polishing, and crystal faces in different orientations of all the samples can be exposed at the moment, so that the crystal faces exposed in different directions are obtained, and the measurement of the anisotropic thermal conductivity is more accurate.

The present invention provides a wheat grain shape measuring device, which relates to the technical field of grain shape measurement and comprises a bottom plate, a pushing mechanism and a measuring component. The surface of the bottom plate is engraved with length scale lines and reference lines. Bases are installed at both ends of the surface of the bottom plate. Both ends of the measuring component are connected to the base part. A plurality of measuring grooves are arranged on the inner side of the measuring component. Each of the wheat to be measured is embedded in the interior of the measuring groove. The wheat grain shape measuring device places a plurality of wheat grains in the interior of each measuring groove, and pushes each wheat grain against the measuring component through the pushing mechanism, so as to realize the reading and measuring process of the length of each wheat grain, simplify the measuring steps, improve the efficiency of length and grain shape measurement of a plurality of wheat grains, reduce the difficulty of the entire grain shape measurement process, and also make the finally obtained measurement data have higher accuracy.