52results about How to "Simplify calibration work" patented technology

A camera calibration device performs camera calibration for projecting a plurality of camera images from a plurality of cameras onto a predetermined surface to combine them on the basis of the results after calibration patterns to be arranged in a common photographing area of the cameras are photographed by each of the cameras. The camera calibration device judges whether or not the calibration patterns are observed by the cameras on the basis of the photographed results. If judging that the calibration patterns are not observed, the camera calibration device creates the content of an instruction to contain the calibration patterns in the common photographing area to allow the cameras to observe the contained calibration patterns on the basis of the photographed results and notifies the instruction content to an operator who is in charge of the arrangement operation of the calibration patterns.

The invention provides an exposure apparatus and exposure method and correction method for correcting an exposure position aligning function the accuracy of which is influenced by the factor of posture changes accompanied by movement of an alignment camera to image an alignment mark of a photosensitive material, and for improving the correction accuracy for deviation of the exposure position on the photosensitive material. Prior to imaging an alignment mark of a photosensitive material by a CCD camera, a reference plate having a plurality of detection marks arranged at a predetermined interval along the moving direction of the CCD camera is disposed at a position where imaging is possible by the CCD camera. At least one of the detection marks is imaged by the CCD camera placed at the position to image an alignment mark formed on the photosensitive material. Calibration data is calculated based on the data of optical axis deviation of the camera acquired by imaging, and the calibration data is reflected on the reference position data to calibrate the exposure position aligning function of the exposure apparatus.

The invention relates to the technical field of a battery management system, in particular to a new energy automobile battery management system. The new energy automobile battery management system comprises a battery management unit and a battery control unit; the battery management unit is used for acquiring battery brick information and uploading the information to the battery control unit whichis communicated with the battery management unit; and the battery control unit receives the battery brick information uploaded by the battery management unit which is in communicating connection withthe battery control unit, and performs SOC estimation and balanced control operation. Equivalent parameters of the battery are estimated by a real-time on-line estimation method, so that the SOC state of a battery pack is estimated accurately. The calibration work of the battery is simplified through real-time on-line estimation. Accurate control on the battery pack state with low consistency isrealized. Through real-time on-line estimation, both the new battery and the aged battery can maintain high precision and high error correction capability.

The invention provides a unified calibration model for robot structure parameters and hand-eye relations. A three-dimensional sensor is used for replacing optical tracking equipment which needs to beused in robot parameter calibration; a robot-three-dimensional sensor system is taken as a new robot system; a three-dimensional sensor coordinate system is regarded as a new robot tail end coordinatesystem; and the hand-eye relations in the original robot-three-dimensional sensor system are simultaneously calibrated in the process of calibrating D-H parameters of a new robot, namely, the calibration work of the robot structure parameters and the hand-eye relations are completed through one-time calibration according to an existing method, and the calibration precision is improved. The coordinate system conversion relation of a traditional method is as follows: a laser tracker coordinate system l - a robot base coordinate system w - a robot tail end coordinate system n - a three-dimensional sensor coordinate system s; and the coordinate system conversion relation of the unified calibration model is as follows: a target coordinate system m - a robot base coordinate system w - a three-dimensional sensor coordinate system s. By means of the unified calibration model, the calibration work is simplified, the calculation work is reduced, and the calibration precision is improved.

The invention discloses a wireless camera sensor network position and posture calibration method for a wireless camera sensor network, and the method comprises the steps: enabling an unmanned plane carrying a photoelectric identification to enter a region covered by the wireless camera sensor network; taking a plurality of pictures comprising the photoelectric identification at equal intervals in a recognition range of one wireless camera sensor; carrying out the decoding of the photoelectric identification, extracting the pictures which have no overlapped view and are taken by the wireless camera sensor at three different moments, solving and obtaining the position and posture information of the wireless camera sensor; carrying out the feature matching of the wireless camera sensors which have an overlapped view, calculating an intrinsic matrix, decomposing and obtaining a rotation matrix; solving and obtaining the position and posture information of the wireless camera sensors which have the overlapped view, and determining the rotation matrix and a translation amount. The method achieves the quick, simple and precise calibration of the wireless camera sensor, and the wireless camera sensor network calibrated through the method can be quickly applied to disaster relief and other situations where the cameras need to be calibrated.