40results about How to "Calibration results are reliable" patented technology

The invention discloses a calibration method of a fish-eye lens imaging system applied to target detection, which comprises the step of mathematical modeling of the fish-eye lens imaging system based on an equidistant projection and the precise calibrations of the intrinsic parameters of the imaging system (including the central point O3(u,v) of an imaging surface), the distance L between the top section of the fish-eye lens and a theoretic refractive optical center plane, the radial distortion coefficient K of the fish-eye lens, an image element aspect scale factor i, the plane torsional angle gamma between a camera coordinate system and an imaging surface coordinate system, various parameter calibration methods and matched software. The method aims at the omnidirectional vision system based on the fish-eye lens, analyzes the optical structure and the imaging principle of the fish-eye lens and introduces deformation parameters so as to establish the physical model of the fish-eye lens imaging system and then deduce the mathematical model of the system. With an independently-developed calibration procedure, three-dimensional space information is obtained from a two-dimensional image and applied to the calibration of imaging system parameters. The method is applicable to the calibration of various fish-eye type panoramic lenses, is convenient and accurate and has strong practicability.

The present invention is navigation system and method backing up several modes. The navigation system includes fixed imaging equipment, tracking system, surgical operation equipment, sick bed, calibrating pin, calibrating mold and navigation software. It has at least one tracer constituting the world coordinate system, one surgical operation equipment tracer as the surgical operation equipment coordinate system, one sick bed tracer constituting the sick bed coordinate system, one characteristic point set I and one characteristic point set II set inside and outside the calibrating mold separately. After calibration, the disease focus image and the surgical operation equipment are shown in the same coordinate system. The present invention may be used widely in the navigation course of different surgical operations.

The invention provides a laser targeted integral calibration method by aiming at large-size 6D laser target, which relates to the field of large-size space six-degree-of-freedom attitude measurement,and fully uses the advantages of high precision and programmable control of a precious triaxial rotary table. Artificial participation part is not contained during a process, the calibration reliability is increased, and the calibration efficiency is greatly increased. The integral calibration method uses an external frame and a middle frame of the precious triaxial rotary table to drive the 6D laser target to rotate at front of emitting light of a total station to construct a measured control field, the projection position of a light vector under a camera coordinate system is calculated, thereal projection position of the camera is obtained through detection, an attitude relation equation of a clinometer coordinate system and a rotary table coordinate system is established to obtain an attitude relation of the clinometer coordinate system and the camera coordinate system, and the unknown relation parameters in a 6D laser target resolving model can be calibrated. The method can be mainly used for six-degree-of-freedom attitude measurement.

The invention relates to a method and device for calibrating an odometer based on a strapdown inertial navigation / satellite integrated navigation system and belongs to the technical field of strapdown inertial navigation. The method utilizes the result of the first integrated navigation of the strapdown inertial navigation / satellite to calculate reversely the initial posture, carries on the second integrated navigation using the stored original data, provides a calibrated reference value through the result of the second integrated navigation, produces a real carrier system reference speed, and carries out calibration through the real speed. The strapdown inertial navigation / satellite integrated navigation system produces the calibration reference speed so that the accurate and reliable calibration result can be obtained.

An embodiment of the invention provides a well logging curve correction method and device. The method includes: acquiring straight well section depth values and well logging values of multiple collection points of a straight well section according to formation interface information at a locus of a horizontal well section, horizontal well section information and straight well section information, and acquiring horizontal well section depth values, well logging values and well drift angles at positions, corresponding to the collection points on the straight well section, of the horizontal well section according to the straight well section depth values; acquiring a correction function fitting relation through cross-plot fitting according to the well logging values and the well drift angles of the horizontal well section and the well logging values of the straight well section; correcting a well logging curve of the horizontal well section according to the correction function fitting relation. The formation interface information at the locus of the horizontal well section is fully utilized, so that the problem that existing well logging curve correction methods do not fully utilize transverse information of a horizontal well and are low in correction accuracy is solved, accuracy and reliability of correction are improved, and simple, quick, practical and effective correction of the well logging curve is realized.

The invention discloses a data correction method under the condition of variable load of a chemical flow system. The method comprises the following steps: firstly, acquiring measuring data of a measuring instrument within a period of time, and applying steady state detection technology for steady state determination according to key measuring bits among the measuring data; secondly, taking mean values of the measuring data in various steady states, performing steady state operating condition interval division on the mean values of the steady state data according to the load, and dividing the mean values into a plurality of different steady state operating condition intervals; and thirdly, performing data correction and remarkable error detection on multi-variable multi-group measuring data in each steady state operating condition interval, and obtaining remarkable error detection results and data correction results of various steady state operating condition intervals. The method has more reliable and more accurate correction results, simultaneously can select other steady state detection technology and data correction technology, and is flexible to apply and simple to realize.

The invention discloses a robot hand-eye calibration method. The robot hand-eye calibration method includes the steps that S1, a laser tracker and a tetrahedron are arranged, and a laser scanner usedfor conducting measurement on the tetrahedron is arranged on an industrial robot; S2, a conversion matrix (shown in the specification) is calculated; S3, a conversion matrix (shown in the specification) is calculated; and S4, a conversion matrix (shown in the specification) is calculated. According to the robot hand-eye calibration method, hand-eye calibration is conducted on the robot through thelaser tracker and the well-designed tetrahedron, it is avoided that hand-eye calibration is influenced by parameter errors of the industrial robot, the measurement precision is higher, and the calibration result is accurate and reliable.

The invention discloses an in situ gas analysis system with an in situ calibration function, which includes a light emitting device, a light receiving device, a signal analysis device, a mechanical connection structure and a measuring probe, wherein, the light emitting device and the light receiving device is combined with a measured gas pipeline through the mechanical connection structure, and also includes an attached tube, a control device and a gas replacement device; the attached tube moveablely sleeves on the measuring probe, the extension end of the attached tube and the measuring probe are matched with each other in a measured gas pipeline and on a measured optical path to form a closed pipeline which is isolated from the measured gas, the gas analysis system can be in calibrationor measurement situation caused by the extension or the retraction of the attached tube, the control device is used to control the attached tube and the measuring probe to form the closed pipeline which is isolated from the measured gas, the gas replacement device comprising a gas source with a known concentration, a valve and a ventilation joint communicates with the closed pipeline.

The invention discloses an automatic calibration method for a beta absorption-type dust measurement instrument. The method comprises the following steps: aiming at a blank filter membrane, continuously counting the radiation intensity of a beta radiation source passing through a unit area of the blank filter membrane for Q pulses by using a detector, averaging Q / 2 pulses in the Q pulses, making as Na, averaging the remaining Q / 2 pulses, subtracting a difference value C from an average value and making as Nb; judging whether the working precision of the beta absorption-type dust measurement instrument can meet using requirements by taking the mass per unit area delta m of a standard membrane or a mass absorption coefficient standard value k as a working precision acknowledge reference. The beta absorption-type dust measurement instrument can be calibrated automatically without using the standard membrane by the method disclosed by the invention without adding manpower and auxiliary facilities; the calibration result is accurate and reliable; the calibration operation is performed on the beta absorption-type dust measurement instrument without manual timing, so that the time and the labor are saved.

The invention discloses a throttle valve flow test device and a test method thereof. The device comprises a test bench; the test bench is provided with a negative pressure generator, a throttle valvebody fixing device, a flow calibration system, a control unit, a computer, an information input device and a power source; the negative pressure generator is connected with a throttle valve to be tested through a pipeline; the throttle valve body fixing device is used for relatively fixing the throttle valve to be tested and the test bench; the control unit is provided with at least two signal input ends and at least one signal output end, wherein at least one of the signal input ends is in signal connection with a flow sensor, the other signal input end is in signal connection with to the test port signal of the throttle valve to be tested, and the at least one signal output end is in signal connection with the negative pressure generator; the computer exchanges information with the control unit; the computer displays flow calibration information through a display screen; the information input device is connected with the computer; and the power source supplies power to the control unit and the computer. With the throttle valve flow test device and the test method thereof of the invention adopted, corresponding relationships between the opening degrees of the valve block of the throttle valve and air-fuel ratios can be quickly defined, and it can be ensured that an engine can reach an optimal air-fuel ratio under different loads.

The invention belongs to the technical field of indoor navigation positioning and particularly relates to an indoor positioning direction error correcting method. The correcting method includes the steps of: 1) selecting a correcting direction and recording true value of the direction; 2) measuring the correcting direction to obtain a corresponding direction measurement value; 3) calculation of direction error and establishment of a direction error correcting module: calculating the difference between the direction measurement value and the direction true value to obtain the direction error, and establishing the direction error correcting module with unknown parameters by regarding the direction error as a nonlinear function of the direction measurement value; 4) performing curve fitting according to a preset threshold value and determining the parameters in the direction error correcting module; and 5) according to the direction error correcting module, correcting the practical direction. The method can self-adaptably determine the direction error correcting module and accurately complete error correction and precision compensation, and solves a problem of the direction correction during indoor navigation and positioning.

The invention relates to a dynamic calibration device for an open water dynamometer and a calibration method thereof. The dynamic calibration device for the open water dynamometer comprises a supporting base; supporting frames are mounted at intervals at the upper part of the supporting base; a movable base is mounted on the inner wall face of one supporting frame, and fastening is carried out onthe outer wall face of the supporting frame by a pan head positioning screw; a servo motor base and a thrust and torsion meter base are respectively mounted on the upper surface of the movable base bya first screw and a second screw; a servo motor is mounted on the servo motor base; the output end of the servo motor is connected with a left adaptor; the left adaptor is connected with one end of athrust and torsion meter by a left coupling; the other end of the thrust and torsion meter is connected with a right adaptor by a right coupling; and the open water dynamometer is mounted on the right adaptor. The dynamic calibration device for the open water dynamometer works stably and reliably.

The invention belongs to the technical field of sensors, and specifically relates to a sensor calibration device and calibration method. The sensor calibration device comprises calibration software, ametrical instrument and a data collection passage, wherein the metrical instrument and the data collection passage can be in communication connection with the calibration software respectively; the calibration software can collect data messages of the metrical instrument and the data collection passage simultaneously; the metrical instrument can provide constant temperature of pressure for a sensor to be calibrated so as to be collected by the sensor; and data collected by the sensor can be sent to the calibration software for calibration after processing of the data collection passage. By using the sensor calibration device and calibration method, data in the metrical instrument and the data collection passage can be collected simultaneously, veracity index, repeatability index, noise index and linear index of the sensor are calculated effectively, and the correction of the sensor is completed.

The invention discloses an in situ gas analysis system with an in situ calibration function, which includes a light emitting device, a light receiving device, a signal analysis device, a mechanical connection structure and a measuring tube, wherein, the light emitting device and the light receiving device is combined with a measured gas pipeline through the mechanical connection structure, and also includes an attached tube, a control device and a gas replacement device; the measuring tube is a big C-shaped tube whose both ends are connected with the mechanical connection structure; the attached tube is a rotatable small C-shaped tube which is arranged in the big C-shaped tube, when the small C-shaped tube rotates, the gap of the big C-shaped tube is covered, so that a closed pipeline which is isolated from the measured gas is formed in the measured gas pipeline and on a measured optical path, the gas analysis system can be in calibration or measurement situation which can be caused by adjusting the relative position of the small C-shaped tube and the big C-shaped tube; the control device is used to cause the small C-shaped tube and the big C-shaped tube to form the closed pipeline which is isolated from the measured gas, the gas replacement device comprising a gas source, a valve and a ventilation joint communicates with the closed pipeline.

The invention discloses a flowmeter calibration system with multiple calibration lines and a calibration method based on the system. The system comprises a water supply mechanism and a calibration mechanism, wherein the calibration mechanism comprises at least two standard tubes, all the standard tubes are connected with the water supply mechanism, a standard tube control valve and a standard flowmeter are installed on each standard tube, the water-out ends of all the standard tubes are connected with the same first converging tube, the first converging tube is connected with at least two calibration tubes, N to-be-detected flowmeters are connected in series on each calibration tube, a calibration tube control valve is also installed on each calibration tube, and all the calibration tubesare connected with the same flow regulation mechanism. According to the system, multiple calibration tubes are adopted and connected in parallel, multiple to-be-detected flowmeters are installed on each calibration tube, multiple to-be-detected flowmeters can be calibrated at a time when one arbitrary calibration tube is opened separately, different flowmeters can be calibrated when different calibration tubes are opened respectively, therefore, assembly-line calibration of the flowmeters is realized, and calibration time is greatly saved.

The embodiment of the invention provides a seabed horizontal array shape correction method and device, a processor and a storage medium. The method comprises the following steps: transmitting a cooperative sound signal through a transmitting point corresponding to a seabed horizontal array laying sea area; according to the cooperative sound signal, obtaining an area position where the seabed horizontal array is arranged, a pre-deployment orientation of the seabed horizontal array, sound velocity profile data and position information of a transmitting point; acquiring an array channel response corresponding to the transmitting point; determining a copy array channel response corresponding to the array channel response according to the area position, the pre-deployment orientation, the sound velocity profile data and the position information of the transmitting point; determining a corresponding correlation peak maximum value according to the array channel response and the copy array channel response; and taking the maximum value of the correlation peak as a cost value, and determining an optimal formation parameter of the seabed horizontal array through a preset genetic algorithm.

The invention relates to the technical field of automobile manufacturing and discloses a dynamic testing device for a temperature of a steel disc of a clutch, a wet clutch assembly and a four-wheel drive transfer case. The dynamic testing device for the temperature of the steel disc of the clutch is mounted on the wet clutch and is rotatably mounted in the four-wheel drive transfer case along withthe wet clutch. The dynamic testing device for the temperature of the steel disc of the clutch comprises a temperature sensor, an emitter module and a power supply and transfer module. The temperature sensor is fixed to the steel disc of the clutch, the emitter module is fixed to a rotating tool and the power supply and transfer module is mounted on the four-wheel drive transfer case. The temperature sensor and the emitter module are electrically connected through a wire, and the power supply and transfer module is electrically connected to the emitter module wirelessly. According to the dynamic testing device for the temperature of the steel disc of the clutch, the wet clutch assembly and the four-wheel drive transfer case, the temperature of the steel disc of the clutch can be tested dynamically in an actual moving state, and a test result is precise.

The invention provides an automatic calibration system and method for a photoelectric detection target, and belongs to the technical field of photoelectric testing and weapon target range testing. The automatic calibration system comprises a measurement control platform, a signal detection platform and a controller; the measurement control platform and the signal detection platform are arranged at an interval, the photoelectric detection target is arranged on the measurement control platform, the signal detection platform receives light emitted by the photoelectric detection target, and the controller is electrically connected with the measurement control platform and the signal detection platform; and a detection light curtain of the photoelectric detection target is completely overlapped with a signal receiving assembly of the signal detection platform by adjusting the measurement control platform. According to the system, the included angle parameters of light curtains in a combined structure body of the photoelectric detection target can be accurately obtained, reliable data support is provided for accurate evaluation and subsequent research and development of weapon performance, the calibration precision and the use repeatability are improved, the time spent on calibration is shortened, batch production is easy, the universality is high, and the calibration result is reliable.

The invention provides an equivalent fuel consumption factor calibration system and method, the equivalent fuel consumption factor calibration system comprises a control strategy model, a vehicle and part model and a development platform, wherein the control strategy model is used for simulating a vehicle engine controller configured with a preset control strategy; the vehicle and part model is used for simulating a whole vehicle power system and parts of a vehicle; the development platform is used for integrating the control strategy model and the vehicle and part model; the development platform is further used for receiving the calibration parameters of the equivalent fuel consumption factors and controlling the control strategy model and the vehicle part model to operate according to the calibration parameters to obtain calibration results of the equivalent fuel consumption factors. By applying the scheme provided by the invention, the problem of high equivalent fuel consumption factor calibration cost in the prior art can be solved.

The invention relates to a dynamic calibration device for an open water dynamometer and a calibration method thereof. The dynamic calibration device for the open water dynamometer comprises a supporting base; supporting frames are mounted at intervals at the upper part of the supporting base; a movable base is mounted on the inner wall face of one supporting frame, and fastening is carried out onthe outer wall face of the supporting frame by a pan head positioning screw; a servo motor base and a thrust and torsion meter base are respectively mounted on the upper surface of the movable base bya first screw and a second screw; a servo motor is mounted on the servo motor base; the output end of the servo motor is connected with a left adaptor; the left adaptor is connected with one end of athrust and torsion meter by a left coupling; the other end of the thrust and torsion meter is connected with a right adaptor by a right coupling; and the open water dynamometer is mounted on the right adaptor. The dynamic calibration device for the open water dynamometer works stably and reliably.

The invention discloses a time-frequency continuous wavelet transform well-to-seismic calibration method comprising the following steps that 1) a synthetic seismic record is made by using logging data; 2) time-frequency transform is performed on the synthetic seismic record and a well-side seismic record by using a time-frequency continuous wavelet transform method so that the time-frequency distribution diagram of the synthetic seismic record and the well-side seismic record is obtained; 3) the time-frequency axes of the synthetic seismic record and the well-side seismic record are enabled to be aligned by adjusting the time-frequency distribution diagram, the synthetic seismic record and / or the well-side seismic record are synchronously adjusted and then well-to-seismic calibration is performed; 4) the correlation analysis coefficient of the synthetic seismic record and the well-side seismic record is calculated; if the correlation analysis coefficient is greater than or equal to 0.9, the calibration result is reliable; and if the correlation analysis coefficient is less than 0.9, the calibration result is not reliable, and the process returns to the step 1) to perform calibration again. With application of the well-to-seismic calibration method, the well and semiotic time-depth relationship can be more efficiently and accurately determined with the help of the logging and seismic data so that the calibration result is accurate and reliable.

The invention discloses an automatic calibration method for a beta absorption-type dust measurement instrument. The method comprises the following steps: aiming at a blank filter membrane, continuously counting the radiation intensity of a beta radiation source passing through a unit area of the blank filter membrane for Q pulses by using a detector, averaging Q / 2 pulses in the Q pulses, making as Na, averaging the remaining Q / 2 pulses, subtracting a difference value C from an average value and making as Nb; judging whether the working precision of the beta absorption-type dust measurement instrument can meet using requirements by taking the mass per unit area delta m of a standard membrane or a mass absorption coefficient standard value k as a working precision acknowledge reference. The beta absorption-type dust measurement instrument can be calibrated automatically without using the standard membrane by the method disclosed by the invention without adding manpower and auxiliary facilities; the calibration result is accurate and reliable; the calibration operation is performed on the beta absorption-type dust measurement instrument without manual timing, so that the time and the labor are saved.

The invention provides a multi-functional clamping device for calibration of sheet-shaped thin-film thermocouple sensors, comprising: a fixture body, the fixture body is formed by buckling an inner conical sleeve and an outer conical semicircular sleeve, and the inner conical sleeve There is a sensor card slot between the cylinder and the outer conical semicircular sleeve, and a scale scale is set on the right side of the sensor card slot; a threaded hole is opened at the front end of the inner conical sleeve, and the sheet-shaped film thermocouple to be tested is connected by a long set screw. The sensor is compressed. The inner conical sleeve is equipped with a matching lead fixture tooling, which adopts the mechanical clamping method and uses short set screws to press the thermocouple positive compensation wire and the thermocouple negative compensation wire to the corresponding thin film thermal electrodes respectively. . The device of the present invention solves the problem that the lead end of the sheet-shaped film thermocouple is easily broken in a high-temperature environment, and can be installed at the furnace mouth of various dry-type metering furnaces such as vertical and horizontal, which reduces the heat loss of the furnace during the calibration process and improves the accuracy of the experimental results.

The invention provides an anti-collapse multi-time scale generative adversarial network generator parameter correction method, and the method comprises the steps: carrying out the sampling of a random noise signal and a real signal of a generator at different time scales, and inputting the sampled generator signal data into a generator; inputting the sampled generator random noise signal, the generator real signal and the generated signal generated by the generator into a discriminator; and setting an anti-collapse threshold value, judging whether the probability that the judgment signal obtained in the discriminator is a real signal is greater than the anti-collapse threshold value, storing the data greater than the anti-collapse threshold value into the model database, and learning the data less than the anti-collapse threshold value through the conditional construction generative adversarial network again. According to the method, the problem of generator parameter correction can be effectively solved, the obtained result can be continuously optimized through multi-time-scale sampling, the generation and discrimination functions of the conditional construction generative adversarial network are achieved, and the anti-collapse capacity in the generator parameter correction process is improved.

The invention relates to a method, device and equipment for checking steady-state and dynamic electric quantity data of a regional power grid. The method obtains the same number of steady-state electric quantity data and dynamic electric quantity data of the regional power grid to form a corresponding steady-state data sequence and The dynamic data sequence, the difference data sequence is obtained by making a difference between the steady-state data sequence and the dynamic data sequence, and the steady-state data sequence, the dynamic data sequence and the difference data sequence are normalized, feature extracted, and the calculation of the eigenvalue is obtained. The corresponding steady-state feature sequence, dynamic feature sequence and difference feature sequence, and the absolute value of the difference between any two adjacent eigenvalues ​​in the difference feature sequence, select the absolute value of the largest feature difference as The maximum characteristic difference, comparing the maximum characteristic difference with the difference threshold, can identify whether the steady-state electrical quantity data is consistent with the dynamic electrical quantity data, and realize data verification and identification, with a small amount of calculation and a short time-consuming.

An embodiment of the invention provides a well logging curve correction method and device. The method includes: acquiring straight well section depth values and well logging values of multiple collection points of a straight well section according to formation interface information at a locus of a horizontal well section, horizontal well section information and straight well section information, and acquiring horizontal well section depth values, well logging values and well drift angles at positions, corresponding to the collection points on the straight well section, of the horizontal well section according to the straight well section depth values; acquiring a correction function fitting relation through cross-plot fitting according to the well logging values and the well drift angles of the horizontal well section and the well logging values of the straight well section; correcting a well logging curve of the horizontal well section according to the correction function fitting relation. The formation interface information at the locus of the horizontal well section is fully utilized, so that the problem that existing well logging curve correction methods do not fully utilize transverse information of a horizontal well and are low in correction accuracy is solved, accuracy and reliability of correction are improved, and simple, quick, practical and effective correction of the well logging curve is realized.

The invention discloses a robot hand-eye calibration method, comprising steps: S1, setting a laser tracker and a tetrahedron, and setting a laser scanner for measuring the tetrahedron on an industrial robot; S2, calculating a conversion matrix S3, calculating a conversion matrix S4, Calculation of conversion matrix The robot hand-eye calibration method of the present invention uses a laser tracker and a well-designed tetrahedron to perform hand-eye calibration on the robot, avoiding the hand-eye calibration being affected by industrial robot parameter errors, with higher measurement accuracy and accurate and reliable calibration results.

The invention provides a measurement method for sand-gravel material dynamic triaxial sample local deformation by utilizing the electromagnetic induction technology, and belongs to the technical fieldof geo-technical testing. By adopting an electromagnetic induction principle, inner local deformation of a triaxial sample is measured based on a middle-sized triaxial apparatus, and granular magnetsin testing equipment are located inside the sample; an annular coil is placed inside a pressure chamber and surrounds the sample; the annular coil is externally connected with a signal amplifier, a filiter and a voltage integrator. The measurement method comprises the steps that a conventional test method is adopted to prepare the sample by using the middle-sized triaxial apparatus, the magnets are embedded, and sample forming is completed; the coil and other equipment are installed and erected; installation, ventilation, saturation and consolidation are carried out on the sample, and the sample is connected with a loading device; under the circumstance of pressurization, calibration is performed on the measuring apparatus for conducting the test, and test data is acquired. According to the method, the structure is reasonable, the assembly is simple, the test operation is convenient and reduces interference on the sample during the test process, and the method can accurately measure the interesting local deformation inside the sand-gravel material triaxial sample.

The invention relates to a method for calibrating a line laser and a mechanical arm, comprising the following steps: acquiring point cloud data of a spherical tool laser scanning; and finding the minimum Z value scanning point cloud data from the spherical tool laser scanning point cloud data through a minimum Z value search algorithm ; Obtain the position and attitude data of the robotic arm, and find out the minimum Z value position and attitude data corresponding to the minimum Z value scanning point cloud data; solve the transformation matrix set between the minimum Z value scanning point cloud data and the minimum Z value position and attitude data to remove The transformation matrix set contains the imaginary number transformation matrix, and the transformation matrix with the same absolute value of the real part of all items in the transformation matrix set is removed, and the optimal transformation matrix is ​​obtained to complete the calibration of the line laser and the manipulator. Compared with the prior art, the method has the advantages of low cost, high degree of automation in the whole process, simple operation and reliable calibration results, and can meet the requirements of actual on-site use.