5results about How to "Eliminate alignment errors" patented technology

The invention provides a distance measurement method in a calibration process of a laser vision system, which belongs to the field of distance measurement, and comprises the following steps: shooting a positioning plate image with a laser point through a camera, and arranging a plurality of positioning identifiers with known world coordinates on the positioning plate; identifying a positioning identifier in the image, and acquiring a pixel coordinate of the positioning identifier; calculating a three-dimensional coordinate of the positioning identifier in a camera coordinate system; fitting a plane equation of the positioning plate in a camera coordinate system; pixel coordinates of laser points in the image are detected and extracted; converting the pixel coordinate of the laser point into a space ray equation in a camera coordinate system, and calculating an intersection point of the space ray and the plane equation to obtain a three-dimensional coordinate of the laser point in the camera coordinate system; calculating the distance from the laser point to the optical center of the camera. According to the method, all calculations are carried out in a unified camera coordinate system, alignment errors caused by non-unified coordinate systems of multiple devices are thoroughly eliminated, and the consistency of distance measurement and the overall calibration precision are improved.

The application discloses a cable processing threading machine, and relates to the technical field of cable processing, which comprises a workbench, a traction assembly, a touch panel, a fixed rack and a movable rack, and further comprises two groups of threading assemblies, each of which comprises a top plate, a limiting piece, a flexible rope and a plurality of threading blocks. Through the improved combination state of the threading blocks and the cooperation of the flexible rope, all the drooping threading blocks can be quickly and synchronously reset to a horizontal linear type through the "pulling" action of the flexible rope. For multi-core gray cable, the original scheme needs to be manually pushed back block by block, while the present scheme only needs to be pulled once, and the operation time is shortened from minutes to seconds. The flexible rope allows the threading blocks to freely find the lowest energy state under the action of gravity, and even if the gap between the plug-in surfaces changes due to slight wear, the V-shaped state can still be naturally formed, reducing the operation difficulty of the user.

The present application relates to the technical field of gas film hole detection, and more particularly to a heavy gas turbine turbine moving blade gas film hole flow-line intelligent detection method and system. The method comprises the following steps: fixing the turbine moving blade on a flow transfer tool, acquiring pose data at a positioning and calibration station, and constructing a workpiece coordinate system to establish a detection index sequence; collecting images and extracting inlet profiles at an optical detection station; acquiring point clouds and extracting aperture, hole depth and axis angle parameters at a three-dimensional profile detection station; performing multi-modal fusion to identify defects at a defect review and determination station, and generating a hole-by-hole defect mark and a comprehensive detection report. The method realizes flow-line intelligent detection, improves efficiency and accuracy.

The utility model discloses a kind of liquid crystal display modules, comprising: glue frame;Liquid crystal glass is located in the side of glue frame;Printed circuit board is located in the side of glue frame away from liquid crystal glass, part covers glue frame;The side of printed circuit board towards liquid crystal glass is equipped with LED patch indicator light, the side of glue frame away from printed circuit board is equipped with light guide column, LED patch indicator light is located in light guide column, light guide column is used to the light of LED patch indicator light produces spotlight.This application liquid crystal display module, by glue frame between liquid crystal glass and printed circuit board, the LED patch indicator light of the side of printed circuit board towards liquid crystal glass is embedded light guide column and touch key cap, realized with glue frame the integration of liquid crystal glass and light guide column and key cap, save the artificial of LED patch indicator light, realize assembly simplification, cost reduction and satisfy the implementation of the individualization scheme of customer.It realizes three-dimensional stacking, greatly reduces the plane occupied area and overall thickness of liquid crystal display module, beneficial to equipment light and thin.

The application provides a train dynamic formation car connection control method and device, and belongs to the technical field of train models. The device comprises a train head, a car, a connection mechanism, a positioning mechanism and a switching mechanism. A control box and a driving box are respectively arranged on the chassis of the train head and the chassis of the car. The control box is integrated with a wireless communication, an electromagnet and a push rod driving circuit. The driving box independently drives the running wheels to operate. The whole train is connected through a Bluetooth wireless network. A command is issued by a master control body. The multiple car bodies are cooperatively operated. During docking operation, the positioning mechanism first completes position pre-correction. Then, the magnetic attraction structure is used to achieve initial adhesion. Subsequently, the mechanical structure is used to complete self-locking. The magnetic attraction power supply can be cut off to reduce energy consumption. The application can complete full-automatic docking, decoupling and dynamic car switching during train running. The docking precision is high, and the operation is stable. The defects of the traditional magnetic attraction structure, such as high energy consumption, easy disconnection after power failure and inaccurate alignment, are solved. The application can meet the use requirements of the intelligent model train for long-time cyclic operation.