Search

CN-121994157-A - Wireless remote control DIC calibration device

CN121994157ACN 121994157 ACN121994157 ACN 121994157ACN-121994157-A

Abstract

The invention provides a wireless remote control DIC calibration device, which comprises: the invention has the advantages that the bearing seat assembly, the calibration adjusting assembly and the calibration plate clamp are arranged, the bearing seat assembly is connected and fixed with the testing machine, the calibration plate required by the test is clamped and fixed by the two groups of the calibration plate clamps, the upper computer circularly sends instructions according to a preset angle list in use, the calibration plate is driven to be adjusted to different positions by the azimuth adjusting rotating shaft and the pitching adjusting rotating shaft, the camera is triggered to acquire every one angle, speckle images with no less than 12 visual angles are acquired, the internal and external parameters of the camera are calibrated, and the bearing seat assembly is disassembled conveniently after the test is completed, so that the multi-position calibration can be realized.

Inventors

  • DONG YALI
  • NI PENGCHENG

Assignees

  • 北京航空航天大学

Dates

Publication Date
20260508
Application Date
20251230

Claims (7)

  1. 1. The wireless remote control DIC calibration device comprises a bearing seat assembly (100), a calibration adjusting assembly (200) and a calibration plate clamp (300), and is characterized in that the bearing seat assembly (100) comprises a bearing seat body (101), an upper circular groove (115), an azimuth adjusting rotating shaft (117) and a butting square groove (118), wherein the upper surface of the bearing seat body (101) is provided with the upper circular groove (115); The center of the upper circular groove (115) is fixedly connected with an azimuth adjusting rotating shaft (117) for adjusting the direction position of the calibration adjusting component (200), a butting square groove (118) is formed in the upper surface of the azimuth adjusting rotating shaft (117), the calibration adjusting component (200) is arranged above the azimuth adjusting rotating shaft (117), and the calibration adjusting component (200) comprises a connecting seat plate (201), a pitching adjusting seat (202), a pitching rotating groove (203) and a pitching adjusting frame (206); The utility model discloses a calibration plate fixture, including calibration plate fixture (300), including anchor clamps body (303) in connection bedplate (201), connection bedplate (201) top fixedly connected with is used for realizing the every single move regulation pitch regulation seat (202), every single move regulation seat (202) left and right sides face has all seted up a set of every single move change groove (203), every single move change groove (203) inboard rotation is connected with pitch adjustment frame (206), every single move adjustment frame (206) are close to every single move regulation seat (202) center one end and install calibration plate fixture (300), including anchor clamps body (303) in calibration plate fixture (300).
  2. 2. The wireless remote control DIC calibration device of claim 1, wherein the lower end of the azimuth adjusting rotating shaft (117) is fixedly connected with a motor shaft of an azimuth adjusting motor, the azimuth adjusting motor is fixedly arranged on the inner side of the bearing seat body (101) and is positioned at the vertical center line position, the motor shaft of the azimuth adjusting motor is upward and is connected with the lower end of the azimuth adjusting rotating shaft (117), a guide ring groove (116) is formed on the inner side surface of the upper circular groove (115), and a plurality of groups of circumferentially equally distributed slow-release grooves (226) are formed on the lower surface of the connecting seat plate (201); The inner side of the slow release groove (226) is fixedly connected with a spring damping shock absorber (229), one end, away from the center of the connecting seat plate (201), of the spring damping shock absorber (229) is fixedly connected with a slow release seat (228), a slow release supporting frame (230) is fixedly connected below the slow release seat (228), and one end, away from the center of the connecting seat plate (201), of the slow release supporting frame (230) is connected with a slow release guide wheel (231) in a rotating structure; the slow release guide wheel (231) is movably embedded with the guide ring groove (116), two groups of symmetrically arranged slow release guide grooves (227) are formed in the inner side surface of the slow release groove (226), and the slow release seat (228) is movably embedded with the slow release guide grooves (227); Two groups of rotating wheel frames (207) are fixedly connected to the outer side of the pitching adjusting frame (206), rotating supporting wheels (208) are fixedly connected to the inner side of the rotating wheel frames (207) in a rotating structure, a group of supporting ring grooves (209) are formed in the inner side surfaces of the front end and the rear end of the pitching rotating groove (203), and the rotating supporting wheels (208) are movably embedded with the supporting ring grooves (209).
  3. 3. The wireless remote control DIC calibration device of claim 2, wherein a group of pitching shaft bearings (204) are fixedly connected to the outer ends of the left side and the right side of the pitching adjustment seat (202) in a rotating structure, the pitching shaft bearings (204) are crossed roller bearings, and a group of pitching adjustment rotating shafts (205) are connected to the centers of the pitching shaft bearings (204) in a penetrating manner; One end of the pitching adjusting rotating shaft (205) far away from the center of the pitching adjusting seat (202) is fixedly connected with the pitching adjusting frame (206), the pitching adjusting rotating shaft (205) is positioned at the center end of the pitching adjusting seat (202) and is fixedly connected with a motor shaft of a pitching adjusting motor, the pitching adjusting motor is positioned at the middle position inside the pitching adjusting seat (202) and is arranged in a left-right center line, the pitching adjusting motor is a double-headed motor, motor shafts at two ends of the pitching adjusting motor are connected with two groups of pitching adjusting rotating shafts (205) close to the center end of the pitching adjusting seat (202), and the pitching adjusting motor and the azimuth adjusting motor are all speed reducing motors with built-in angle encoders, motor driving modules and wireless receiving modules; the wireless receiving module is used for receiving an angle instruction sent by external remote control equipment or an upper computer and driving a corresponding motor to complete closed-loop rotation, a calibration plate is clamped between a left group of calibration plate clamps (300) and a right group of calibration plate clamps, the wireless receiving module supports Bluetooth, the communication distance is not less than 5m, and supports a control mode of an entity remote controller, the pitching adjusting rotating shaft (205) is orthogonally intersected with the axis of the azimuth adjusting rotating shaft (117), and the intersection point is positioned in the geometric center of a speckle calibration plate and used for reducing calibration errors caused by parallax.
  4. 4. The wireless remote control DIC calibration device of claim 3, wherein two groups of symmetrically arranged outer through grooves (119) are formed in the outer side face of the azimuth adjusting rotating shaft (117), the outer through grooves (119) are used for communicating an external environment with the butting square grooves (118), and positioning torsion springs (120) are fixedly connected to the inner sides of the outer through grooves (119); The inner side of the outer through groove (119) is fixedly connected with a positioning seat (121) through a rotating structure and a positioning torsion spring (120), the center of the lower surface of the connecting seat plate (201) is fixedly connected with a butting square seat (224), two groups of symmetrically arranged positioning grooves (225) are formed in the outer side surface of the butting square seat (224), and a limiting collar (233) is sleeved on the outer side of the butting square seat (224); Two groups of limit sliding blocks are fixedly connected to the inner side surface of the limit collar (233), two groups of limit sliding grooves (232) are formed in the lower surface of the butt joint square seat (224), the limit sliding blocks and the limit sliding grooves (232) are movably embedded with each other, two groups of limit connecting rods (234) are fixedly connected to the upper part of the limit collar (233), and limit springs (235) are sleeved on the outer sides of the limit connecting rods (234); the upper end of the limiting connecting rod (234) is fixedly connected with a linkage rotating block (236), a pressing seat (237) is further arranged above the connecting seat plate (201), the tail ends of the left side and the right side of the pressing seat (237) are connected with the linkage rotating block (236) in a rotating structure, and the middle position of the pressing seat (237) in the left-right direction is fixedly connected with a pitching adjusting seat (202) in a rotating structure; the butt joint square seat (224) is mutually embedded with the butt joint square groove (118), the positioning seat (121) is mutually embedded with the positioning groove (225), and the limiting sleeve ring (233) is sleeved on the outer side of the azimuth adjusting rotating shaft (117) to press the positioning seat (121).
  5. 5. The wireless remote control DIC calibration device of claim 1, wherein a clamping connecting seat (211) is fixedly connected between two groups of pitching adjusting frames (206), a clamping sliding groove is formed in the right side surface of the clamping connecting seat (211), a clamping screw (210) is rotatably connected to the inner side of the clamping sliding groove, and a lifting sliding groove (212) is formed in the middle position of the upper surface of the clamping connecting seat (211); The inner side of the lifting sliding chute (212) is rotationally connected with a lifting screw (213), the inner side of the lifting sliding chute (212) is movably embedded and connected with a rear bracket (214), the front lower end of the rear bracket (214) is matched with the lifting screw (213) in a threaded structure, the front lower end of the clamp body (303) is fixedly connected with a clamping sliding block (301), and the right side surface of the clamping sliding block (301) is provided with a clamping screw hole (302); The clamping screw (210) is provided with two groups of clamping external threads in the left-right direction and opposite in rotation direction, the clamping screw (210) and the clamping screw hole (302) are mutually rotated and drive two groups of calibration plate clamps (300) to move close to or away from each other simultaneously in the forward and reverse rotation of the clamping screw (210), and the upper surface of the clamp body (303) is provided with a bearing clamping groove (304).
  6. 6. The wireless remote control DIC calibration device of claim 5, wherein a push plate (215) for driving the expansion and the contraction of a clamping spring (218) and providing a rotating seat (216) to rotate and support is movably embedded at the inner side of the upper end of the rear bracket (214), a rotating hole is formed at the inner side of the push plate (215), the rotating seat (216) is connected with the inner side of the rotating hole in a rotating embedded manner, a clamping connecting seat (217) is fixedly connected at the rear side of the rotating seat (216), and a flat plate clamping seat (221) is fixedly connected at the outer end of the rear side of the clamping connecting seat (217); The outer end of the rear side of the clamping connecting seat (217) is fixedly connected with a group of arc clamping seats (222) in a symmetrical direction with the flat plate clamping seat (221), a group of top clamping grooves (223) are formed in the front side surfaces of the flat plate clamping seat (221) and the arc clamping seats (222), and two groups of symmetrically arranged rotary positioning grooves (219) are formed in the rear side surface of the rear bracket (214); The rear end of the outer side face of the clamping connecting seat (217) is fixedly connected with two groups of symmetrically arranged rotary positioning blocks (220), a clamping spring (218) is sleeved on the outer side of the clamping connecting seat (217), and the rotary positioning blocks (220) and the rotary positioning grooves (219) are mutually embedded under the resilience force of the clamping spring (218).
  7. 7. The wireless remote control DIC calibration device of claim 1, wherein a fixed connector (102) is fixedly connected to the middle position of the front side of the bearing seat body (101), a group of side connecting grooves (103) are formed in the left side surface and the right side surface of the fixed connector (102), and a connecting chute (104) is formed in the left side surface of the bearing seat body (101); The inner side of the connecting sliding chute (104) is connected with a connecting screw rod (105) in a rotating structure, the inner side of the connecting sliding chute (104) is also connected with a connecting sliding block (106) in a movable embedded structure, the connecting sliding block (106) is also matched with the connecting screw rod (105) in a threaded structure, and the front side surface of the connecting sliding block (106) is provided with a connecting rotating groove (107); The connecting rotary head (108) is rotationally connected to the inner side of the connecting rotary groove (107), the telescopic seat (109) is fixedly connected to the front side of the connecting rotary head (108), a telescopic stud (111) is in threaded fit with the inner side of the telescopic seat (109), a side connecting block (112) is fixedly connected to the front side of the telescopic stud (111), the side connecting block (112) is of a bent rod structure with an obtuse angle at a bending position and is arranged towards the fixed connector (102) at the tail end in use, and a group of connecting positioning grooves (110) are formed in the upper surface of the telescopic seat (109); The connecting swivel (108) is characterized in that a group of positioning connecting rods (113) are arranged on the inner sides of the upper end and the lower end of the connecting swivel, a connecting positioning block is fixedly connected below the positioning connecting rods (113), positioning springs (114) are sleeved on the outer sides of the positioning connecting rods (113), the connecting positioning blocks are mutually embedded with the connecting positioning grooves (110), and the side connecting blocks (112) are mutually embedded with the side connecting grooves (103).

Description

Wireless remote control DIC calibration device Technical Field The invention belongs to the technical field of mechanical testing, and particularly relates to a wireless remote control DIC calibration device. Background The digital image correlation (DIC for short) is a non-contact optical measurement technology, and the core is that by analyzing sequential digital images before and after deformation of an object, the displacement field (translation, rotation) and the strain field (stretching, compression and shearing) of the surface of the object are accurately calculated by utilizing the matching correlation of pixel gray values, so that the full-field and high-precision representation of the mechanical behavior of the material or the structure is realized. In DIC testing, the quality of the speckle directly determines the strain field measurement accuracy. The prior art generally adopts a manual hand-held or fixed bracket mode to adjust the angle of the speckle calibration plate, which has the defects of poor manual adjustment repeatability, difficult accurate reproduction of space angle, difficult wiring in a large experiment table or a closed environment in a wired control mode, only one visual angle can be obtained in a single calibration mode, multiple disassembly and assembly are needed, the efficiency is low, manual approach adjustment is easy to block the visual field of a camera, errors are introduced and the like. In view of the foregoing, it is desirable to provide a new structure for solving the above-mentioned problems. Disclosure of Invention Aiming at the defects existing in the prior art, the invention aims to provide a wireless remote control DIC calibration device which solves the problems in the background art. The wireless remote control DIC calibration device comprises a bearing seat assembly, a calibration adjusting assembly and a calibration plate clamp, wherein the bearing seat assembly comprises a bearing seat body, an upper circular groove, an azimuth adjusting rotating shaft and a butting square groove, and the upper surface of the bearing seat body is provided with the upper circular groove; The upper round groove center is fixedly connected with an azimuth adjusting rotating shaft for adjusting the direction position of the calibration adjusting component, a butting square groove is formed in the upper surface of the azimuth adjusting rotating shaft, the calibration adjusting component is arranged above the azimuth adjusting rotating shaft, and the calibration adjusting component comprises a connecting seat plate, a pitching adjusting seat, a pitching rotating groove and a pitching adjusting frame; The utility model discloses a calibration plate fixture, including the base, the connection bedplate top fixedly connected with is used for realizing the every single move regulation of calibration plate, every single move regulation seat left and right sides face has all seted up a set of every single move and has changeed the groove, every single move changes the inboard rotation of groove and is connected with every single move alignment jig, every single move alignment jig is close to every single move regulation seat center one end and installs calibration plate fixture, including the fixture body in the calibration plate fixture. As a preferred implementation mode, the lower end of the azimuth adjusting rotating shaft is fixedly connected with a motor shaft of an azimuth adjusting motor, a guide ring groove is formed in the inner side surface of the upper circular groove, and a plurality of groups of slow-release grooves which are distributed in a circumference equally-divided mode are formed in the lower surface of the connecting seat plate; the inner side of the slow release groove is fixedly connected with a spring damping shock absorber, one end of the spring damping shock absorber, which is far away from the center of the connecting seat board, is fixedly connected with a slow release seat, a slow release support frame is fixedly connected below the slow release seat, and one end of the slow release support frame, which is far away from the center of the connecting seat board, is connected with a slow release guide wheel in a rotating structure; the slow release guide wheel is movably embedded with the guide ring groove, two groups of symmetrically arranged slow release guide grooves are formed in the inner side surface of the slow release groove, and the slow release seat is movably embedded with the slow release guide grooves; The pitch adjusting frame outside fixedly connected with two sets of rotatory wheel carrier, rotatory wheel carrier inboard is revolution mechanic fixedly connected with rotation supporting wheel, a set of support annular has all been seted up to both ends medial surface around the pitch change groove, rotation supporting wheel and support annular mutual activity gomphosis, in carrying out azimuth angle adjustment, mark adjusting part and carry ou