9results about How to "Realize calibration" patented technology

The application provides a kind of equipment residual life adaptive prediction method of fusion multi-source data, it is related to equipment residual life prediction technical field, specific steps include: obtaining the equipment operating data and corresponding environmental parameters under different working conditions, construct the first data set;Each source feature vector is constructed, uniform dimension mapping is executed, global degradation reference construction and deviation representation processing between sources are carried out, and life sensitive source sequence is obtained;Degradation stage feature is constructed and stage difference representation processing is carried out, and stage memory sequence is obtained;Life reduction feature is constructed and degradation consumption representation processing is carried out, and basic residual life reduction sequence is obtained;Working condition deviation feature is constructed according to basic residual life reduction sequence, life sensitive source sequence end time feature and stage memory sequence end time feature, and residual life correction quantity is generated;The equipment residual life prediction result is obtained according to basic residual life reduction sequence and residual life correction quantity.

The utility model discloses a steel wire rope nondestructive detector, which relates to the technical field of steel wire rope detection and comprises a displacement adjusting mechanism, a clamping and conveying mechanism, a placing groove, a placing seat, a clamping groove seat, a clamping groove, a sheath, a baffle plate and a steel bar group sample, the steel bar group sample clamping and conveying device is reasonable and simple in structure, low in production cost, convenient to install and complete in function, through cooperative operation of the clamping and conveying mechanism and the conveying mechanism, automatic clamping and conveying of a steel bar group sample for testing can be achieved, use convenience is improved, and the steel bar group sample is protected and limited through the protective sleeve; according to the utility model, different steel bars can be inserted to respectively test the continuous broken wire signal resolution, the LF detection sensitivity and the LMA quantitative accuracy of the steel wire rope nondestructive detector, so that the performance of the detector is comprehensively detected; the displacement adjusting mechanism is adopted to control the detector probe to move, magnetization and calibration of a steel bar group sample can be achieved, operation is easy and convenient, and the detection result is visual and reliable.

The invention relates to a three-point contact ball bearing axial stress calibration device and calibration method, and belongs to the technical field of bearing test.The three-point contact ball bearing axial stress calibration device comprises a control unit, a shell and a main shaft arranged in the shell, the main shaft is sleeved with a first three-point contact ball bearing and a second three-point contact ball bearing, and the outer side of the main shaft is further sleeved with an intermediate bearing assembly; a radial loading device is also arranged in the shell; a thrust sleeve in sliding fit with the shell is arranged on the outer side of the first three-point contact ball bearing, the second three-point contact ball bearing is in sliding fit with the shell, a transition sleeve abutting against the second three-point contact ball bearing is arranged in the shell in a sliding mode, an axial loading device is arranged on the outer side of the shell, and a first pressure sensor is arranged between the axial loading device and the thrust sleeve. A limiting piece is further arranged on the outer side of the shell, and a second pressure sensor is arranged between the transition sleeve and the limiting piece. According to the invention, direct measurement and calibration of the axial force transmitted to the far-end three-point contact ball bearing in a multi-bearing series connection structure can be realized.

The application relates to the technical field of laser processing, and discloses a calibration method and device and laser processing equipment. The method comprises the following steps: printing a calibration pattern on a calibration consumable; acquiring an image of the calibration pattern printed on the calibration consumable, and determining pixel coordinate data of the calibration pattern in the image; acquiring field lens information and laser module information, selecting a preset mapping relationship matched with the field lens information and the laser module information, and calibrating the pixel coordinate data according to the preset mapping relationship; determining an actual mapping relationship between physical coordinate data of the calibration pattern and the pixel coordinate data according to the calibrated pixel coordinate data and the physical coordinate data of the calibration pattern; and calculating a center offset, and associating and storing the center offset, the field lens information, the laser module information and the actual mapping relationship. The user end can calibrate the laser module by itself.

The application discloses a radiation type high-temperature thin-film heat flow meter dynamic-static integrated calibration device and method, relates to the technical field of aviation and thermophysics, and the device is characterized in that: a radiation system is used for providing a stable radiation energy source and adjusting and converging light source radiation energy; a receiving system is used for measuring and recording heat flow density; adjacent radiation systems and receiving systems are arranged on a support system; a cooling system is used for providing cooling for the radiation systems and the receiving system; a data acquisition system is responsible for collecting and processing data from the radiation systems, the receiving systems, the cooling system and a dynamic test system; the dynamic test system is arranged at an outlet of the radiation system and is used for converting a direct-current heat flow signal output by the radiation system into a square wave heat flow signal; and the data acquisition system is used for collecting and processing data from the radiation systems, the receiving systems, the cooling system and the dynamic test system, so that the application can meet the demand for high-temperature and high-heat flow calibration of an aero-engine thin-film heat flow meter.

The invention relates to a vehicle-mounted camera calibration method and apparatus, a terminal device and a computer program product. The method comprises the steps of obtaining three-dimensional point cloud data obtained by performing three-dimensional scanning on a target vehicle by an electronic device; constructing a three-dimensional model and a vehicle coordinate system of the target vehicle based on the three-dimensional point cloud data; obtaining a first video stream obtained by shooting the target vehicle by the electronic equipment and a second video stream collected by a plurality of vehicle-mounted cameras; based on the first video stream and the three-dimensional model, determining a target pose stream of the target vehicle in a world coordinate system; based on the target pose stream, the first video stream and the second video stream, determining a first shooting parameter of each vehicle-mounted camera in a vehicle coordinate system; and performing bundle adjustment optimization on the first camera parameter of each vehicle-mounted camera to obtain a second camera parameter of each vehicle-mounted camera in the vehicle coordinate system. According to the method and the device, the problem of relatively low efficiency of calibrating the vehicle-mounted multi-path camera system by depending on a physical target in related technologies is solved.

The application relates to a data processing method, a data processing device and a calibration system, wherein the data processing method comprises the following steps: acquiring a plurality of groups of first reference coordinate points of a calibration board in a first camera coordinate system corresponding to a plurality of groups of poses, and a plurality of groups of second reference coordinate points of the calibration board in a second camera coordinate system corresponding to a plurality of groups of poses; acquiring position information of a to-be-calibrated object in the second camera coordinate system corresponding to a plurality of groups of different poses of a second camera; determining a conversion relationship between the first camera coordinate system and the second camera coordinate system according to the first reference coordinate points and the second reference coordinate points; and obtaining position information of the to-be-calibrated object in the first camera coordinate system according to the conversion relationship and the position information, so that the accurate solution of the position coordinates of an object outside the camera field of view is realized by using a plurality of cameras, and the calibration of the spatial position of the object outside the camera field of view is realized, and the accuracy of the calibration result is improved.

The application provides a kind of thermal infrared sensor calibration method, device, electronic equipment and storage medium, it is related to sensor calibration technical field, the method comprises: the original image is input into segmentation model, obtains the binary image corresponding to original image of segmentation model output, original image is the thermal infrared image of the calibration board collected by the to-be-calibrated thermal infrared sensor, image reconstruction is carried out on the binary image, obtains the contrast enhancement image corresponding to original image, the visual features of the corner point of the checkerboard pattern in the contrast enhancement image are enhanced, obtain the feature enhancement image corresponding to original image, the corner point of the checkerboard pattern in the feature enhancement image is identified, based on the position information of the identified corner point, the internal and external parameter values of the to-be-calibrated thermal infrared sensor are obtained.The application can more accurately and efficiently realize the calibration of thermal infrared sensor, can improve the robustness of thermal infrared sensor calibration, and can realize the calibration of thermal infrared sensor in complex scene.

This invention relates to a sensor testing device, a testing method, and a storage medium. The testing device includes: an identification unit for identifying the sensor type of the sensor under test and generating a sensor type signal; a control unit for receiving and generating a calibration transmission signal based on the sensor type signal; a carrying unit including multiple test areas corresponding to various sensor types; a transmission unit for transmitting the sensor under test to a first target test area corresponding to the calibration transmission signal among the multiple test areas; and a setting unit for acquiring and providing multiple different target test parameters to the sensor under test located in the first target test area according to a setting signal. The control unit acquires characteristic data signals of the sensor under test located in the first target test area under each target test parameter and calibrates the sensor under test based on each target test parameter and each characteristic data signal. This improves the reusability of the testing device.