57 results about "Fast measurement" patented technology

The application discloses a kind of antenna profile rapid measurement system real-time calibration method, comprising: each laser tracker respectively to each control point is aimed at ranging, the distance value of each laser tracker center and each control point is obtained, create space sphere, obtain the accurate coordinate of each control point;Antenna profile rapid measurement system is photographed to the control point and the measured mark point of measured antenna imaging, the image point coordinate of control point and the image point coordinate of the measured mark point of measured antenna are obtained;Based on control point collinear condition equation and the preset measurement camera internal parameter, the position and posture of control point relative to control field coordinate system are obtained according to the image point coordinate of control point and the image point coordinate of the measured mark point of measured antenna;According to profile measurement point collinear equation and the position and posture of control point relative to control field coordinate system, the position and posture of the measured mark point of measured antenna are obtained.The application improves the measurement accuracy and reliability of antenna profile rapid measurement system.

This utility model provides a non-standard electronic cigarette casing inspection fixture, including a base, a column detachably connected to the base, and a drive seat detachably connected to the column. The base is provided with an outer mold mechanism for inspecting the entire or partial shape of the casing, and the drive seat is provided with an inner mold assembly for inspecting the internal cavity of the casing. The outer mold mechanism includes an outer mold base with a contouring groove whose contour matches the contour of the outer surface or part of the outer surface of the casing. The inner mold assembly includes a drive component mounted on the drive seat and a contouring inspection block mounted on the drive component. The contouring inspection block includes a connecting part for connecting the drive end of the drive component, a contouring part matching the shape of the cavity, and a limiting part for limiting the distance the contouring part extends into the cavity. The contouring part can extend into or out of the cavity. This utility model has the advantages of fast measurement speed and high practicality.

This invention relates to the field of ring-shaped workpiece measurement technology. It provides a method for multi-section contact measurement of the inner and outer diameters of ring-shaped workpieces. The method includes: calibrating the zero-point deviation and setting fixed parameters, the number of measurement points, and tolerance standards in the software of a host computer; using a PLC to control the measuring arm to move along the Z-axis to the first measurement point, calculating the tip coordinates of each measuring arm at the measurement point; calculating the inner circle center coordinates and diameter, and the outer circle center coordinates and diameter at the current measurement point based on the tip coordinates, thereby calculating the center distance between the inner and outer diameters; continuing until all measurement points are completed, and storing the calculation results for all points. This invention achieves high-precision and rapid measurement of the inner and outer diameters of non-ring-shaped workpieces, and can simultaneously evaluate geometric tolerances such as diameter extremes, concentricity, and axial drift, comprehensively improving detection efficiency, accuracy, and automation level.

This invention relates to the field of building construction technology, specifically to a device and method for rapidly measuring slope. The device includes a telescopic pole, a horizontal distance infrared rangefinder, a slope bottom depth infrared rangefinder, a data collection and slope calculator, an infrared baffle, and bearings. The telescopic pole is placed horizontally, with the horizontal distance infrared rangefinder fixed horizontally to the top surface of the first section of the telescopic pole. The infrared baffle is positioned at the outer end of the last section of the telescopic pole. The slope bottom depth infrared rangefinder is installed at the outer end of the last section of the telescopic pole and is suspended from the last section via bearings. The slope bottom depth infrared rangefinder and the infrared baffle are on the same vertical plane. The device can automatically calculate measurement data, saving labor and time; it reduces the need for personnel to ascend and descend slopes, reducing the number of surveying personnel and improving work efficiency; and it provides one-time measurement data, reducing data errors and ensuring construction quality.

The utility model discloses a hardness detection frock of insert pipe, include: base, insert pipe pressure device, including fixed on the support arm of base and fixed on the pressure assembly of support arm, pressure assembly is equipped with the insert pipe passageway of insert pipe, and pressure assembly is used for the pressure of insert pipe in the insert pipe passageway, measuring device, including the scale support of sliding connection on base and the scale of connection on scale support, the sliding direction of scale support and the length extension direction of insert pipe passageway are parallel, and the scale line on scale is along height direction setting. This hardness detection frock of insert pipe can realize the standardization of insert pipe hardness, fast measurement, better guarantee the consistency of the hardness of multiple insert pipes, improve insert pipe hardness measurement efficiency, and whole hardness detection frock simple structure, the production cost is low.

The scheme belongs to the technical field of optical measurement, and discloses a device for quickly measuring the angle of a light beam, which comprises a shearing interferometer and an angle measuring tool. The shearing interferometer comprises a shearing plate and an observation plate marked with a reference line, the included angle between the shearing plate and the observation plate is 45 degrees, the extension planes of the surfaces of the shearing plate and the observation plate facing or away from each other intersect, and the intersection line is perpendicular to the reference line. The shearing plate is used for shearing a to-be-measured parallel light beam into a first light beam and a second light beam and reflecting them to the observation plate, the observation plate is used for observing the interference fringes of the first light beam and the second light beam, and the angle measuring tool is used for measuring the rotation angle of the shearing interferometer rotating around the normal line of the observation plate from an initial posture to an end posture. The initial posture refers to the posture of the shearing interferometer when the reference line is parallel to the projection of the reference line of the to-be-measured parallel light beam on the observation plate, and the end posture refers to the posture of the shearing interferometer when the interference fringes are parallel to the reference line.

The application relates to a geometric error detection device of a machine tool linear shaft and a detection method thereof, and the detection device comprises a mirror, an interferometer, an interferometer bidirectional displacement platform, a laser interferometer, a laser interferometer bidirectional displacement platform, a first grating ruler, a second grating ruler and a computer. The mirror is fixed on a Z-direction sliding guide rail of the machine tool, the interferometer is arranged on the interferometer bidirectional displacement platform, the first grating ruler is arranged on the interferometer bidirectional displacement platform and is used for detecting the displacement of the interferometer moving along the X and Y directions; the laser interferometer is arranged on the laser interferometer bidirectional displacement platform, the second grating ruler is arranged on the laser interferometer bidirectional displacement platform and is used for detecting the displacement of the laser interferometer moving along the X and Y directions; and the computer is used for identifying the geometric error value of the machine tool linear shaft according to the spatial position coordinates. The technical scheme has higher measurement precision and wider measurement bandwidth, the measurement time is short, and the requirement of rapid measurement is met.

The utility model provides a kind of track inertial navigation measurement system, including track detection car, two wireless digital display displacement meters are symmetrically arranged and are installed in the downside of track detection car horizontal axis by connecting seat, and the mobile measuring end of one wireless digital display displacement meter is slidably connected to the downside of track detection car by sliding piece, the bottom of sliding piece is connected with first rolling piece, and the mobile measuring end of another wireless digital display displacement meter is connected with second rolling piece, and first rolling piece and second rolling piece are respectively rollingly connected to the inside standard track gauge of left and right tracks, and automatic leveling base is connected to the upper side of middle part of track detection car by fixing part and is built-in with multi-axis sensor.The utility model can directly measure track gauge value by two wireless digital display displacement meters, three-dimensional coordinate measurement component can obtain the three-dimensional coordinates of the center of automatic leveling base, then according to the azimuth angle, inclination and track gauge value measured by multi-axis sensor, the three-dimensional coordinate values of left and right tracks are calculated, so that the space attitude of track can be quickly measured for the initial adjustment of track.

The application relates to the field of semiconductor technology and discloses a gallium oxide single crystal substrate defect map construction method and equipment, which comprises the following steps: preparing an ohmic contact on the back surface of a gallium oxide single crystal substrate to form a capacitor structure for deep level transient spectrum measurement; setting a high-density two-dimensional measurement grid point on the surface to be measured; controlling an automatic translation platform to make the gallium oxide single crystal substrate move in sequence, automatically collecting deep level transient spectrum signals on each two-dimensional measurement grid point through a programmable fast DLTS measurement system to obtain DLTS spectra of each two-dimensional measurement grid point; automatically analyzing the DLTS spectra of each two-dimensional measurement grid point, identifying deep level defects of different categories, and calculating the concentration of each category of deep level defects in each two-dimensional measurement grid point; and based on the identified defect categories and the concentration data of each two-dimensional measurement grid point, constructing a full-field defect map for representing the spatial distribution information of deep level defects on the gallium oxide single crystal substrate.

A kind of lidar technology for atmospheric waveguide fast measurement, temperature and humidity profile, the key factor of atmospheric waveguide, can be measured simultaneously, the device includes laser emission module: 822nm online seed laser, 822nm offline seed laser, 1064nm pump laser, laser frequency locking module, optical parametric oscillator, acoustooptic modulator, frequency doubling module and emission optical assembly;Echo receiving module: optical receiving telescope and optical lens assembly, F-P filter, polarization light splitting prism, iodine molecular absorption cell, Fizeau interferometer and photodetector;Data acquisition and processing module.The present application fuses differential absorption lidar and two detection systems based on interferometer high spectral lidar, adopts seed injection optical parametric oscillator laser technology, obtains high frequency stability 822nm laser to realize atmospheric humidity profile fast measurement, remaining 532nm laser realizes atmospheric temperature profile fast measurement, finally inverts atmospheric waveguide parameter, realizes atmospheric waveguide efficient and accurate measurement.

This utility model relates to a special gauge for rapid chamfer measurement. The gauge includes a measuring guide sleeve with an internal cavity. One end of the measuring guide sleeve has a testing port for inserting the product being inspected. A measuring gauge is located inside the cavity, and a return spring is fitted around the measuring gauge. The other end of the measuring guide sleeve has a reference sleeve, and the end of the measuring gauge has a calibration surface that mates with the reference sleeve. In practice, this utility model enables rapid measurement of chamfers on parts, effectively improving the problem of long waiting times for measurement results. This rapid chamfer measurement gauge is low-cost and highly efficient, allowing for immediate measurement after processing. It can quickly and promptly identify dimensional problems in the product, effectively controlling potential batch quality risks.

This invention discloses a device and method for accurately measuring the equivalent width of pre-drainage gas in roadways. The device is placed inside a borehole along the bedding plane to measure the gas emission velocity. A curve showing the relationship between the gas emission velocity and the corresponding borehole depth is plotted, allowing for accurate measurement of the equivalent width of pre-drainage gas in the roadway. This method fully considers factors such as coal seam gas pressure, gas content, ground stress, burial depth, and coal permeability. Utilizing the positive correlation between gas emission velocity and the equivalent width of pre-drainage gas in the roadway, the method achieves higher accuracy and faster measurement speed. It also aligns with common knowledge in coal mine gas management and offers advantages such as short testing time, high accuracy, and simple operation, enabling the measurement results to guide on-site gas disaster management in coal mines.

The application discloses a laser speckle deformation thermodynamic displacement measurement method and system based on DL-SpeckleNet, and belongs to the cross technical field of optical measurement and deep learning. The method first constructs a multi-medium laser speckle image dataset under a temperature gradient of -50 DEG C to 800 DEG C and completes fine annotation, and after pretreatment such as gray scale conversion, joint denoising and data enhancement, a DL-SpeckleNet light-weight network is constructed by fusing a multi-scale feature extraction module and an attention enhancement unit; stress and strain reference data are generated by a MATLAB-ncorr algorithm, cross-validation is completed by a Python-ncorr algorithm, and the network is trained with the reference data as labels; a laser speckle interference experiment platform is built to collect measured data; finally, the pretreated speckle image to be measured is input into the optimized model, numerical output of thermodynamic displacement and visualization of stress and strain nephograms are realized, the environmental dependence of the ncorr algorithm is broken, high-precision and rapid measurement of material thermodynamic displacement in an extreme environment is realized, and the method is suitable for thermodynamic coupling deformation detection in the fields of aerospace and material science.

The application discloses a kind of LED modulation bandwidth fast test system, including direct-current power supply;Biaser;Laser, for exciting LED sample to emit light, realize the transformation of optical signal-electrical signal-optical signal;Transmission component, for focusing overall light;Optical filter, for excluding the influence of laser on LED light emission;Photoelectric detector, detect the light signal emitted by LED, and change into electrical signal output;Vector network analyzer, analyze two-port signal to draw frequency response curve, so as to obtain the modulation bandwidth of LED.The application can realize the function of testing the communication performance of LED without packaging, and can realize the function of measuring the modulation bandwidth of multiple LEDs simultaneously by laser scanning.Using the device of the application can realize fast measurement, and optical excitation can achieve the effect of zero damage to LED sample.

This invention provides a highly efficient photon scanning method and ranging technique, primarily combining rotational scanning and push-broom techniques, and employing a multi-beam emission method. When the aircraft is moving in a straight line, rotational scanning and push-brooming can be simultaneously achieved simply by rotating the light source. A single-photon array detector is used to collect the echo photons reflected from the detected surface by the probe laser. This invention significantly advances the rapid measurement of depth features of large-area targets. Rotational scanning makes the sampled target points denser and improves the spatial resolution of the detection; push-brooming allows the system to measure more target points in the scanning direction, increasing the detection area. This invention has good development potential in fields such as terrain mapping and single-photon 3D imaging.

The utility model provides a hand -held pressure lever type gauge, include: the top of left side of holding block is provided with arc -shaped groove, detection area sets up in the bottom of left side of holding block, the detection head of pressure lever type micrometer dial central wear measurement rod bottom passes through arc -shaped groove and enters detection area, rapid detection pressure lever group sets up in pressure lever type micrometer dial top, fixed type measuring needle group bottom wear in detection area right side wall, fixed type measuring needle group top and detection head contact, when detecting, right hand passes through finger to wear holding hole and holds holding block, right hand thumb presses down pressure block and makes pressure lever type micrometer dial middle measurement rod be lifted, left hand will standard piece cover and put on fixed measuring needle, right hand thumb leaves pressure block measurement rod and falls back naturally because of gravity, detection head and resist standard piece other side, detect whether pressure lever type micrometer dial upper reading and standard piece thickness numerical value one, after calibrating detection is finished, the bearing required detection area of required detection is in turn and resists fixed measuring needle, and constantly presses and lifts pressure block, and fast measurement is carried out.

The utility model relates to temperature measuring device technical field discloses a kind of non-contact visual temperature measuring device, including coaxially arranged shell and inner shell, inner shell is located in shell, and inner shell is equipped with plasma generator, and one end of inner shell is equipped with gas source, and other end is equipped with outlet, cavity is formed between shell and inner shell, two infrared temperature sensors are equipped at the outlet of cavity, two infrared temperature sensors are symmetrically arranged at the two sides of cavity, two infrared temperature sensors are oppositely inclined, the included angle of optical axis of infrared temperature sensor and horizontal plane is α, 15 °≤α≤25 °. Can be in the treatment process to human skin temperature fast measurement, effectively prevent skin scald. The visual temperature measuring device can be applied to other close-range non-contact human skin temperature measurement application scenarios that cannot be installed to the center of temperature measuring head, improve the use range, reduce use cost.

This invention proposes a fast measurement method for the global average non-extensive parameter of a Hall thruster plasma. The method includes steps S1 (steady-state operation of the equipment), S2 (collecting cathode-side electron temperature, anode-side electron temperature, and discharge voltage), and S3 (calculating the global average non-extensive parameter Q). The analytical formula is: [Formula omitted for brevity]. This method abandons traditional distribution function fitting methods and directly analyzes the global average non-extensive parameter Q within the discharge channel by measuring relevant physical quantities of the anode and cathode. The analytical formula is concise and the calculation is fast, enabling on-orbit online real-time monitoring and parameter calculation. The entire process utilizes the existing temperature and pressure measurement circuits of the equipment without adding new hardware, achieving global, real-time, and low-cost measurement. It is suitable for strong non-equilibrium plasma conditions such as Hall thrusters, and the calculated non-extensive parameter can be applied to thrust modeling and operational condition monitoring.

This invention discloses an automated iterative monitoring method and system for preventing platform swaying. This invention relates to the field of engineering surveying technology, addressing the problem that existing methods are prone to measurement errors, making continuous stakeout and monitoring via a moving platform difficult. This invention acquires images of at least three non-collinear fixed base points with known absolute coordinates and an image of the forward stakeout target; calculates the absolute coordinates and attitude parameters of the platform on the moving platform; combines the absolute coordinates of the platform with the target image parameters synchronously acquired by the forward camera to calculate the absolute coordinates of the stakeout target; and uses the newly calculated stakeout target as the base point to drive the platform in iterative forward measurement. This method achieves fast measurement speed through synchronous imaging by front and rear cameras, fundamentally eliminating platform sway errors, effectively suppressing error accumulation through forward iteration using base points, and enabling real-time correction of the zoom lens via the target group, thus realizing long-distance, automated, and high-precision engineering stakeout and structural deformation monitoring.

The present application relates to the field of aero-engine, gas turbine aerodynamic thermal test, discloses a kind of cascade aerodynamic probe fast measurement method based on online system identification, by regarding aerodynamic measurement pipeline as a dynamic system, according to the time series pressure signal of first pressure measuring point, the ARX model and pressure prediction model of first pressure measuring point are constructed, then the ARX model parameter of last pressure measuring point of current pressure measuring point is used to construct the initial prediction model of steady pressure of current pressure measuring point;And according to the pressure measurement value of a small amount of sampling time of current pressure measuring point, the steady pressure prediction model of aerodynamic measurement pipeline at current pressure measuring point is fitted in real time, and then the final steady pressure prediction value is deduced. High-precision steady value can be obtained in the early stage of physical response of aerodynamic measurement pipeline, the single-point measurement efficiency is improved, the operation cost of test is greatly reduced, and the fast convergence and robustness of steady pressure prediction model of each pressure measuring point under severe working condition can also be guaranteed.

The application discloses a kind of measuring system calibration device and use method, the device is by being provided with measuring tool at the wheel hub of B, C, D three point measuring trolley of tamping car body, the measuring tool is provided with transverse scale and longitudinal scale, the observation component is by observing and recording the scale value of the measuring tool, and data is sent to the data processing unit, the secant value of the section line, longitudinal flat value and the transverse flat value of B point, C point, D point three places are calculated, to calibrate tamping car measuring system;Using the measuring system calibration device, can be calibrated on non-standard line to various models of tamping car measuring system by split type, connecting piece arrangement, sequentially arranged mode, simple and reliable use method, fast measurement efficiency, high calibration accuracy.

The application provides a SERF inertial measurement device nuclear spin lossless flip method, relates to the technical field of quantum precision measurement and inertial navigation, and lossless inverts the nuclear spin polarization direction by applying a specific radio frequency magnetic field to the SERF inertial measurement device. The frequency and amplitude of the applied radio frequency magnetic field change over time, so that the effective magnetic field experienced by the nuclear spin in the rotating coordinate system changes slowly from initially parallel to the polarization direction to the opposite polarization direction, thereby realizing lossless inversion of the nuclear spin polarization direction. The application has important significance for realizing online rapid measurement of nuclear polarization rate, developing a new type of inertial measurement output scheme and further suppressing system slow drift error.

The present application relates to the technical field of medical apparatus and instruments, in particular to an endoscope mirror body, an endoscope, an endoscope field of view center distance measuring method and an endoscope field of view size obtaining method. The endoscope mirror body comprises a first light beam emitter and a second light beam emitter arranged at the head end of the mirror body, and the first light beam emitter has a larger light beam angle than the second light beam emitter. The present application has the advantages of simple structure, less measurement environment restriction, fast measurement speed, high measurement accuracy, real-time feedback of the distance between the head end of the mirror body and the measured tissue, the angle between the surface of the measured tissue and the end face of the mirror body, the size of the surface of the measured tissue, provision of complete three-dimensional space information, effective improvement of the lesion grade determination accuracy in the early cancer screening of the electronic endoscope, guidance of the mirror body operation and reduction of the operation risk.

The application discloses a long-period waveguide grating type sensor, which comprises a glass substrate, a linearly-extended waveguide core layer arranged in the glass substrate and a cladding layer arranged around the waveguide core layer; the waveguide core layer comprises a first cylindrical core layer, a long-period waveguide grating core layer and a second cylindrical core layer arranged in sequence from front to back, and the radius of the long-period waveguide grating core layer changes periodically in a sinusoidal mode from front to back; the first cylindrical core layer is an optical signal input end, and the second cylindrical core layer is an optical signal output end. The high-sensitivity response of the characteristic absorption peak wavelength of the transmission spectrum wave trough to the external environmental refractive index disturbance is utilized to realize high-sensitivity and rapid measurement of the gas, and the manufacturing method is simple and the cost is low.

This invention relates to the field of data measurement, specifically to an online method for measuring the exhaust enthalpy of a steam turbine low-pressure cylinder. It includes the following steps: S1, connecting the steam inlet pipe to the low-pressure cylinder exhaust port and the steam outlet pipe to the condenser extraction port; S2, detecting the temperature values ​​T1, T2, and T3 at the temperature measuring points of the steam inlet pipe, connecting pipe, and steam outlet pipe, and the corresponding pressure values ​​P1, P2, and P3 at the pressure measuring points; S3, calculating the exhaust enthalpy of the low-pressure cylinder, i.e., the initial interface enthalpy H1 corresponding to T1 and P1, H1 = 2 * H2 - H3, where H2 is the intermediate interface enthalpy corresponding to T2 and P2, obtained by looking up the enthalpy entropy diagram based on T2 and P2, and H3 is the outlet interface enthalpy corresponding to T3 and P3, obtained by looking up the enthalpy entropy diagram based on T3 and P3. This invention features a simple measurement method, enables rapid single-point measurement, and has low measurement costs.

The utility model relates to the technical field, in particular to a rapid measurement cotton fiber length detection device which comprises a fixed seat and a pull disc, a measuring scale is placed on one side of the upper surface of the fixed seat, a first fixed block is fixedly connected to the upper surface of the fixed seat, and a lead screw is in threaded connection with the interior of the first fixed block. A sliding rail is fixedly connected between the first fixing blocks, the pull disc is arranged in a groove formed in the side face of the sliding rail in a sliding mode, a sliding block is arranged in the sliding rail in a sliding mode, a containing frame is fixedly connected to the upper surface of the sliding block, and a pointer is fixedly connected to the outer side of the containing frame. According to the device, the effect of rapid measurement is achieved under the action of the graduated scale and the pointer, contact and separation of cotton fibers are more conveniently observed through the transparent roller, the effect of reducing errors caused by the device is achieved, and the effect of conveniently taking and placing the cotton fibers is achieved under the blocking action of the limiting groove on the V-shaped rod.