1508 results about "Measuring equipment" patented technology

A cell module for an electrical energy storage device of a motor vehicle includes at least one cell structure made up of energy storage cells, a metallic cell module frame, enclosing the at least one cell structure, for clamping the energy storage cells, and a measuring device for detecting a deformation of the cell module frame related to cell expansion. The measuring device includes a passive resistive extension sensor having a deformation-dependent electrical resistance and a measuring unit connected to the extension sensor to output an electrical measurement signal characterizing the deformation-dependent electrical resistance of the extension sensor. The extension sensor is formed by the metallic cell module frame, with which the measuring unit is electrically contacted.

The invention provides a calibration method of electron beam measuring equipment and a related product. The calibration method comprises the following steps: acquiring an initial scanning image of a wafer acquired by the electron beam measurement equipment at an initial position in a preset view field; controlling the wafer to move for a preset distance along a preset direction, and acquiring a translation scanning image acquired for the wafer under the condition of keeping the preset field of view unchanged; determining a first position coordinate of each positioning mark in the initial scanning image and a second position coordinate of each positioning mark in the translation scanning image; obtaining a distortion model of the electron beam measurement equipment according to the displacement of the second position coordinates and the first position coordinates of the positioning marks in the preset direction; and calibrating the electron beam measuring equipment by using the distortion model. According to the method, the distortion degree of the scanned image of the electron beam measurement equipment can be reduced, and the measurement precision of the electron beam measurement equipment is improved.

The invention relates to the technical field of robot detection, and discloses a Delta mechanical arm precision detection method, system and device and a storage medium, and the Delta mechanical arm precision detection method comprises the steps that multiple actual position coordinates of the tail end of a mechanical arm in the movement process along a preset track are obtained according to a selected detection mode; geometric fitting is carried out based on the actual position coordinates, and corresponding circle center coordinates are determined; the tail end is controlled to move to the circle center coordinates, and actual position coordinates at the moment are obtained; and error information representing an absolute precision error is generated based on a difference value between the position and the circle center coordinate. According to the method, automatic detection of the absolute positioning precision of the manipulator is achieved, and error quantization can be completed without depending on external measuring equipment; the generated error vector accurately reflects the direction and size of system deviation, compensation and correction are facilitated, and the method has the advantages of being high in detection efficiency, reliable in result and high in applicability.

The invention discloses a global tracking and adjusting platform of a total station, and belongs to the technical field of automatic control of measuring equipment. Comprising a translation table, a lifting table, an automatic leveling mechanism, a horizontal rotating structure and a pitching rotating mechanism which are sequentially connected from bottom to top, and a comprehensive control system for controlling the mechanisms to cooperatively operate; the translation platform is fixedly mounted on the tripod; a total station is mounted on the automatic leveling mechanism; according to the global tracking and adjusting platform for the total station, through cooperative operation of the translation platform, the lifting platform, the automatic leveling mechanism, the horizontal rotating structure and the pitching rotating mechanism and in combination with a closed-loop control strategy of a comprehensive control system, automatic leveling and transverse and vertical displacement adjustment of the total station and remote precise control over the azimuth angle and the pitching angle of an eyepiece are achieved; and the eyepiece of the total station is quickly aligned with the center of the target, so that the measurement preparation efficiency and precision are greatly improved.

The invention provides a probe frequency response calibration parameter determining method, a probe frequency response calibration parameter measuring system and a storage medium, and the probe frequency response calibration parameter determining method introduces a composite test signal including a steady-state frequency sweep signal and a transient pulse signal. De-embedding calculation is carried out on a data set which is obtained under the two conditions that a probe is not connected to a calibration system and the probe is connected to the calibration system and responds to the same test signal, namely amplitude division is carried out to eliminate link gain deviation, phase subtraction is carried out to strip channel phase deviation, accurate extraction of the independent frequency response characteristic of the probe is achieved, and the accuracy of the independent frequency response characteristic of the probe is improved. Therefore, the frequency response calibration parameter of the probe is determined. According to the invention, system errors introduced by a test environment and a rear-end measurement link are eliminated, the calibration precision of the amplitude-frequency characteristic and the phase-frequency characteristic of the probe in a full working frequency band is improved, and a reliable basis is provided for implementation of accurate real-time anti-distortion compensation in actual signal acquisition of measurement equipment such as an oscilloscope and the like; and the reduction authenticity of the whole measurement system in the high-frequency and broadband signal test is ensured.

The invention discloses a method for improving the performance of double-independent quantum key distribution of actual reference system measurement equipment, belongs to the technical field of quantum key distribution (QKD), and aims to improve the performance of the double-independent quantum key distribution when non-ideal factors such as a post-pulse effect of a detector and finite sample statistical fluctuation are considered. The invention relates to a method and a system for improving the performance of a reference system measurement device by introducing an advantage extraction technology into a double independent quantum key distribution (RFI-MDI-QKD) protocol of the reference system measurement device. Simulation results show that when the post-pulse effect and the statistical fluctuation effect are considered, the advantage extraction method can effectively improve the security key rate and the security transmission distance of the RFI-MDI-QKD protocol on the premise of not changing optical hardware. According to the invention, a valuable reference technology can be provided for practical research of the RFI-MDI-QKD system.

The invention relates to a dynamic control method for an efficient assembly process of a high-precision driving mechanism, which improves the proficiency and the professionality of operators in a step-by-step station design mode and ensures the consistency of assembly quality. Data interconnection between measurement equipment and an MES system is broken through by establishing a driving assembly integration and application management system, a prediction model of part size and output precision is constructed based on assembly field actual measurement multi-source errors and by utilizing actual measurement key parameters, field dynamic optimization decision and intelligent regulation and control of assembly process parameters are achieved, and field assembly and adjustment are guided.

The invention discloses a time-varying precision customized fine self-healing method based on virtual-real homeomorphic evolution, and relates to the technical field of machine tool precision control, and the method comprises the steps: constructing a homogeneous transformation matrix according to the position relation of all parts of a machine tool, and obtaining an error unified mathematical model based on a small error theory; then, a measuring device is used for obtaining small errors of movement and rotation angles and reverse clearance errors of a translation shaft; and then constructing a virtual-real homeomorphic digital twin platform, and integrating the model and the error to realize virtual-real error homeomorphic evolution. Acquiring real-time sensing data, predicting and evaluating precision time variation in combination with a time sequence, and driving virtual-real synchronous evolution to generate a self-healing path; finally, positioning deviation is determined according to path start and end error changes and an error model, and the path is transmitted when a preset value is exceeded; and the time delay defect of traditional real-time compensation is relieved through advanced prediction / deduction. According to the method, unified error modeling of the multi-axis machine tool is achieved, the defect of reverse gap neglect is overcome, errors caused by compensation lag and blind compensation are solved, and the machining precision is guaranteed.

The invention discloses a size laser measurement device and method for metal plugging slide block processing, and relates to the technical field of laser measurement. The size laser measurement device and method for metal plugging sliding block processing comprise a measurement table, a guide rail and a sliding seat which are installed on the measurement table and used for clamping and placing a metal plugging sliding block to be measured, an electric telescopic rod, a supporting piece, a guide plate and a clamp, and the measurement table is provided with a measurement assembly used for measuring the size of the metal plugging sliding block. The measuring assembly comprises a three-dimensional laser scanner which is located above the measuring table and can carry out circumferential movement to carry out annular scanning on the metal plugging sliding block so as to measure the size; the three problems of reflection interference, blind area shielding and flow complexity in online measurement of the high-reflection metal part are effectively solved, the uniformity of repeatability and function correlation is improved, and the measurement repeatability is changed from depending on physical placement consistency to depending on data reference consistency.

The invention relates to the technical field of melt flow rate measurement, and provides melt flow rate measuring equipment and a melt flow rate measuring method.The melt flow rate measuring equipment comprises a charging barrel, an ejector rod, a first driving part, a second driving part, a motor and a mouth mold, and the charging barrel is of a cylindrical structure; the ejector rod is a telescopic rod and corresponds to the bottom opening of the charging barrel; the first driving piece is used for driving the ejector rod to move relative to the charging barrel; the second driving piece is used for driving the ejector rod to stretch; the motor is arranged at the movable end of the ejector rod, and a main shaft of the motor is connected with a rotating end. The mouth mold is arranged on the rotating end, and the rotating end blocks the mouth mold. When the mouth mold is assembled, the problem of assembly clamping stagnation does not exist, meanwhile, the mouth mold is convenient to take down and clean in time, subsequent normal use is prevented from being affected, and application convenience is improved.

The present application provides a temperature measuring device comprising: a metal housing comprising a first metal portion and a second metal portion, the second metal portion having a tip for insertion into a food; an intermediate electrical isolation portion for connecting the first metal portion and the second metal portion, the intermediate electrical isolation portion being configured to electrically isolate the first metal portion and the second metal portion when the first metal portion and the second metal portion are connected to the intermediate electrical isolation portion; the circuit board unit is at least located in the second metal part, and the circuit board unit is connected with an antenna unit; wherein the first metal portion and the second metal portion serve as electrodes of the temperature measurement device, respectively, and the first metal portion serves as a part of an antenna unit of the temperature measurement device.

Methods and computing apparatus for implementing a radiation dosimetry process. An example process may include exposing a first radiation sensitive film to a series of known doses of radiation, measuring a first set of radiation data with a measurement device, and determining a calibration curve. The calibration curve may be determined by selecting Raman spectral ranges based on the first set of radiation data, determining a plurality of band area ratios, and generating the calibration curve based on plotting the band areas and ratios compared to known dose. The radiation dosimetry process then exposes a second radiation sensitive film to an unknown dose of radiation, measures a second set of radiation data for the second radiation sensitive film with the measurement device, and determines a dose exposure level for the second radiation sensitive film by comparing the second set of radiation data with the calibration curve.

The invention provides a leakage current detection method, a power supply device and a storage medium, the leakage current detection method is applied to a scene that the power supply device is connected with at least one other measurement device besides a to-be-detected load device, and equivalent leakage impedance introduced by the at least one measurement device itself is quantified. In combination with the actual output voltage of the power supply device in the current scene working state, the leakage current value flowing through the measuring device is accurately calculated so as to compensate the current between the power supply device and the load device. Compared with the traditional scheme, the detection method actively measures and quantifies the current interference caused by the equivalent leakage impedance of the measurement equipment, and further compensates the leakage component in the total current measurement value supplied to the load by the power supply, thereby realizing the accurate reduction of the real current of the load, and improving the overall precision and reliability of the current measurement; meanwhile, the detection and compensation mechanism does not depend on complex hardware isolation and has the advantages of being low in implementation cost and high in adaptability.

The utility model mainly relates to the mask technology field especially, and particularly to mask clamping device and mask measuring equipment, wherein, mask clamping device includes installation base, clamping subassembly includes four clamping subassembly, four clamping subassembly jointly enclose and form the accommodation space, clamping subassembly can move up and down relative to installation base, clamping subassembly includes telescopic structural member, clamping structural member and elastic buffer, clamping structural member still includes the clamping part for abutting mask side and the horizontal setting and is used for the support of mask's support plate, the elastic buffer is located between the movable end with clamping structural member, detection subassembly is used for detecting whether mask is in horizontal state. Based on the structure design of the utility model, this mask clamping device can clamp the mask of non-standard size, and let mask measuring equipment can also measure the mask of non-standard size.

The present invention relates to a measuring apparatus (10) for measuring the interference shape of the surface (12) of a test object (14-1; 14-2), the measuring apparatus comprising: a diffractive optical element (26-1; 26-2) for generating a test wave (28) from a measurement radiation (18) that has been radiated into the test object, the test wave being configured to radiate onto the surface of the test object; a deflection element (22) upstream of the diffractive optical element in the beam path of the measurement radiation; and a holding device (24, 124) for holding the deflection element, the holding device being configured to change the position of the deflection element (22) by a combination of tilting motion and translational motion.

The invention relates to a system and method for skin analysis using an electronic device. A skin analysis device for attachment to an electronic device of a human user, the electronic device having at least one skin characteristic measuring device, the skin analysis device comprising a housing comprising a housing body, the housing configured to be removably connected to the electronic device; and one or more skin feature measurement assistors connected to the housing and configured to assist one or more skin feature measurement devices in acquiring a skin feature sample of skin features of the human user.

The utility model discloses an antenna technical parameter measurement device and synchronous positioning measurement equipment relates to antenna measurement technical field. The device includes double satellite navigation module, including first satellite navigation unit and second satellite navigation unit, is used for receiving satellite signal and measures the heading angle, inertia measurement unit is used for measuring the pitch angle and the roll angle, microcontrol unit is connected with double satellite navigation module and inertia measurement unit respectively, is used for fusing heading angle, pitch angle and roll angle generation three -dimensional attitude data, communication module is connected with second satellite navigation unit, is used for obtaining real -time dynamic difference positioning information. The device through the multi -source data fusion of double satellite navigation unit and inertia measurement unit has realized high -precision three -dimensional attitude measurement, and combines real -time dynamic difference positioning technology simultaneously, has improved positioning precision and the reliability of attitude measurement significantly, is applicable to the application scene that needs accurate space attitude perception.

The application provides a secondary tool setting method, device, equipment and medium based on a numerical control machine tool. The method comprises the following steps: determining any two adjacent teeth on a target gear to be set and a corresponding division circle track of the target gear, and determining four measurement points on the two adjacent teeth according to the division circle track; determining the coordinates corresponding to the four measurement points according to a measurement device, and determining a measurement angle value according to the four coordinates; determining the initial center coordinates corresponding to the center point of the target gear according to the measurement angle value, a preset angle threshold value and the coordinates corresponding to the measurement points, and performing a preset cutting operation on the target gear; determining the updated center coordinates corresponding to the center point according to the updated coordinates corresponding to each measurement point, and determining a measurement compensation value according to the updated center coordinates and the initial center coordinates; and performing a tool setting operation on the target gear according to the measurement compensation value. Thus, the measurement accuracy of the secondary tool setting is improved.

The invention discloses a tool for measuring a threaded hole of a conductive slip ring, which belongs to the technical field of measuring equipment and comprises a circular bottom plate, a supporting assembly and a positioning assembly are arranged on the circular bottom plate, and the threaded hole of the conductive slip ring is measured through mutual matching of the supporting assembly and the positioning assembly. Fixing of the conductive slip ring and measurement of the angle of a threaded hole can be completed through simple pressing and adjusting actions, the measurement efficiency is remarkably improved, the supporting assembly can achieve automatic centering and stable clamping of the conductive slip ring, it is ensured that the axis of the conductive slip ring is consistent with the axis of a measurement tool, an accurate reference is provided for subsequent angle measurement, and the measurement precision is improved. The positioning assembly can adapt to threaded holes of different diameters, the axis of the positioning plate and the axis of the threaded hole coincide through automatic adjustment, the measurement accuracy and applicability are effectively improved, displacement in the measurement process can be prevented by arranging the limiting unit, clamping can be rapidly released by pushing the L-shaped push plate, workpiece loading and unloading are facilitated, and the measurement accuracy and applicability are improved. And the convenience of continuous operation is improved.

The present disclosure relates to a method for calculating the calibration sensitivity of a sensor for insertion into the body and, more particularly, to a method for calculating calibration sensitivity, wherein a biometric value of a user can be accurately calibrated by overcoming an error in a biometric value measured through a sensor for insertion into the body, or an error in a reference biometric value measured through a biometric information measurement device, by storing past sensitivities and using at least one of the past sensitivities and a currently calculated sensitivity to calculate a calibration sensitivity of the sensor for insertion into the body, and the calibration sensitivity of the sensor for insertion into the body can be accurately calculated, even if there is an error in the reference biometric value or the reference biometric value temporarily deviates from the range of normal biometric values of the user, by determining whether the reference biometric value used to calculate the calibration sensitivity is within an allowable range.

The invention discloses a coating laser automatic measurement method and laser automatic measurement equipment, and relates to the technical field of coating detection. According to the coating laser automatic measurement method and the laser automatic measurement equipment, through linkage cooperation of a first-stage adjustment mechanism, a supplement adjustment mechanism, an outer extension mechanism and a rotating mechanism in the multi-stage adjustment assembly, stable adjustment of the mounting rack and the fixing table can be realized, and the coating laser automatic measurement method and the laser automatic measurement equipment can be applied to complex and uneven field environments. The position of a supporting drop point is changed by adopting multi-stage adjustment adaptation and combining a rotating and outward extending mode, automatic horizontal adjustment can be achieved, the stable posture of the laser measuring instrument is kept, and particularly when the concave-convex ground where the laser measuring instrument is located exceeds the leveling compensation range, the laser measuring instrument can be adjusted stably under the intervention of a multi-stage adjustment assembly. The laser measuring instrument can work stably in the horizontal state, the situation of measurement deviation is prevented, and the laser measuring instrument is particularly important for precision measurement in the high-quality building construction process.

The present invention makes it possible to inspect the fiber arrangement state of a fiber composite material more accurately than conventional technologies even when a measuring instrument having low resolution is used. The present invention also makes it possible to inspect defects in the fiber composite material more easily and accurately than conventional technologies on the basis of images showing the fiber arrangement state of the fiber composite material. By executing image processing for sequentially enlarging the high-density image region for each of steps, the number of steps until the high-density image region is absorbed by another high-density image region and disappears is measured. According to whether or not the measured number of steps is equal to or greater than a prescribed threshold, it is determined whether or not a high-density pixel region has a high-density pixel region having a low density, and the fiber cross-section position is detected on the basis of the determination result.

The utility model discloses a wafer measuring jig and wafer measuring equipment, and relates to the technical field of semiconductor equipment. The wafer measuring jig comprises a base and a cover body, the base is covered with the cover body, so that the base and the cover body jointly form a containing cavity used for containing a wafer, at least one measuring hole is formed in the cover body, and light emitted by a light source can irradiate the surface of the wafer located in the containing cavity through the measuring hole. The wafer measuring jig can solve the problems that the wafer is polluted and damaged when the wafer is manually placed on measuring equipment for measurement.

A test and measurement device has a port to receive a signal from a device under test (DUT), one or more analog-to-digital converters (ADC) to digitize the signal to create one or more waveforms, a display, and one or more processors configured to execute code that causes the one or more processors to: generate a histogram from the waveform, the histogram having one or more dimensions; and calculate one or more entropy values for each of the one or more dimensions. A method includes receiving a signal from a device under test (DUT) at a test and measurement device, digitizing the signal using one or more analog-to-digital converters (ADC) to produce a waveform, generating a histogram from the waveform, the histogram having one or more dimensions, and calculating one or more entropy values for each of the one or more dimensions.

The utility model discloses a nuclear power plant radioactive waste barrel gamma scanning device and measuring equipment, and the nuclear power plant radioactive waste barrel gamma scanning device comprises a supporting seat, a sealing cover, a rotating disc, a control mechanism and a fixing assembly. The sealing cover is detachably mounted on the supporting seat, and a sealing cavity is formed between the sealing cover and the supporting seat; the turntable is detachably mounted on the supporting seat and rotates in the sealing cavity; the fixing assembly is installed on the rotating disc, the radioactive waste barrel is detachably fixed to the rotating disc, and the axis of the radioactive waste barrel is parallel to the plane of the rotating disc. Therefore, the total activity of the radioactive raw material in the radioactive waste barrel can be quickly obtained only through twice measurement, the measurement efficiency and the accuracy of activity reconstruction are improved, the layering frequency is reduced, and the measurement time is saved.

The invention relates to an electric arc sliding table measuring device and method. The electric arc sliding table measuring equipment comprises a main body mounting substrate and a measuring main body structure, the measuring main body structure comprises an XY direction guide rail assembly, a Z direction guide rail assembly, a rotating shaft encoder assembly, a jig mounting seat assembly and a sliding table jig assembly; the Z-direction guide rail assembly is arranged on the XY-direction guide rail assembly and is driven by the XY-direction guide rail assembly to move in the X direction or the Y direction; the rotating shaft encoder assembly is arranged on the Z-direction guide rail assembly and is driven by the Z-direction guide rail assembly to move in the Z direction; the sliding table jig assembly comprises a sliding table jig base, a sliding table self-adaptive mounting plate and a sliding table connecting plate, the sliding table jig base is arranged on the jig mounting seat assembly, the sliding table self-adaptive mounting plate is arranged on the sliding table jig base, and the sliding table connecting plate is arranged on the rotating shaft encoder assembly; and the sliding table self-adaptive mounting plate and the sliding table connecting plate are respectively used for connecting an electric arc sliding table to be tested.

The application discloses a kind of tunnel construction dynamic measurement methods based on inertial navigation auxiliary, comprising: obtaining tunnel construction priori information and stage division parameter;With the measuring equipment of loaded inertial measurement unit, laser radar and odometer, it is installed on construction machinery, travels along tunnel axis, and real-time collection multi-source data;Based on point cloud feature density, the stage where it is located is automatically identified, and corresponding multi-level adaptive constraint model is dynamically switched, including adaptive nonholonomic kinematics constraint, environmental feature constraint based on point cloud data and design section, and absolute correction constraint based on template matching automatically identifying natural existing reserved reference point in tunnel;Extended Kalman filter is constructed to fuse multi-level constraint and dynamically adjust weight;Through loop detection and graph optimization, cumulative error is eliminated and control network is updated.The application realizes adaptive high-precision dynamic measurement of whole process of tunnel construction, does not need artificial layout beacon, effectively solves the problem of unstable positioning accuracy in complex environment.

The invention relates to the technical field of measuring equipment, and discloses a land engineering surveying and mapping device, which comprises a mounting seat, an expandable and foldable support underframe and a total station body mounted on the top of the mounting seat, the supporting underframe comprises a plurality of supporting legs arranged in the circumferential direction, the top end of each supporting leg is rotationally connected to the groove of the mounting base through a rotating shaft, and a folding and unfolding control mechanism is arranged on the inner side. The mechanism comprises a central vertical pipe vertically fixed to the bottom of the mounting base, a sliding sleeve arranged on the central vertical pipe in a sliding and sleeving mode, and connecting arms hinged between the sliding sleeve and the inner walls of the supporting legs. The electric push rod drives the sliding sleeve to move, the length of the supporting leg is adjusted, the leveling time is remarkably shortened, the stability problem caused by low manual adjustment efficiency and different supporting leg angles is solved, and the measurement reliability is improved; and meanwhile, in the storage process of the supporting bottom frame, the transmission mechanism is linked, the protection mechanism is automatically triggered to be closed, sealing protection on a lens group port is achieved, and the use convenience and the overall reliability of the equipment are further enhanced.

The invention relates to the technical field of measuring equipment, and provides a bearing axial clearance press-fitting in-place measuring machine, which comprises a supporting device fixedly arranged on the ground and used for providing a mounting foundation and stable support for the whole machine; the measuring devices are symmetrically arranged on the left side and the right side of the supporting device and used for conducting contact type measurement on the axial clearance and the press-fitting in-place size of the left side and the right side of the axle bearing; an axial positioning device which is connected with the supporting device and is used for carrying out axial positioning on the measured wheel shaft so as to prevent axial movement during measurement; the wheel discharging device is arranged at the tail end of the detection station of the supporting device and is used for pushing the wheel shaft out after the measurement is finished; and the electrical control system is electrically connected with the measuring device, the axial positioning device and the wheel discharging device respectively and is used for controlling cooperative work and data processing of all the components. The bearing axial clearance press fitting in-place measuring machine has the advantages of being accurate in measurement and high in automation level.

The present application belongs to the technical field of helicopter dynamics test, and relates to a method and system for measuring the distance between blades of upper and lower rotors based on measured bending moment. The measured bending moment data in flight is used, and the existing blade measurement system is used. Without additional measurement equipment, the relationship between bending moment and deformation is used to establish the calibration relationship between the test bending moment and the deformation of different profiles of the blade, so as to obtain the distance between the blades of the upper and lower rotors in the real-time flight state. The method can relatively real-time monitor the distance between the blades of the upper and lower rotors in the full flight spectrum state without additional measurement equipment, and ensure flight safety. The method has the advantages of simplifying the measurement method of the blade tip distance, shorter feedback time compared with the light ray sensor and radar wave measurement, and better real-time effect.