CN105844670A - Horizontal robot mobile camera multi-point mobile calibration method - Google Patents

Horizontal robot mobile camera multi-point mobile calibration method Download PDF

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Publication number
CN105844670A
CN105844670A CN201610190891.0A CN201610190891A CN105844670A CN 105844670 A CN105844670 A CN 105844670A CN 201610190891 A CN201610190891 A CN 201610190891A CN 105844670 A CN105844670 A CN 105844670A
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fixed point
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machine people
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horizontal machine
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CN105844670B (en
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李明亮
张平良
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Guangdong Sumida Technology Co ltd
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Dongguan Sumida Automation Co Ltd
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Abstract

The invention relates to the technical field of visual robots and particularly relates to a horizontal robot mobile camera multi-point mobile calibration method. The camera calibration method comprises the following steps: a horizontal robot controls a probe to move back and forth along the X direction and the Y direction; when the probe is aligned with the circle center of a calibration board, the horizontal robot acquires current coordinate data to initially determine the position of the circle center; the primary calibration is conducted and the horizontal robot controls the probe to be sequentially aligned with at least nine primary calibration points one by one; according to the coordinate data of all primary calibration points, the circle center of the calibration board is primarily calibrated; the secondary calibration is conducted and the horizontal robot controls the probe to be sequentially aligned with at least nine secondary calibration points one by one; the circle center of the calibration board is secondly calibrated according to the coordinate data of all secondary calibration points. The above method has the advantages of simple setting, automatic calibration, high calibration efficiency and low maintenance cost. Field maintenance engineers can solve the point position calibration problem in the one-click manner.

Description

Horizontal machine people's mobile camera Multipoint movable scaling method
Technical field
The present invention relates to vision robotics field, refer in particular to a kind of horizontal machine people's mobile camera multiple spot Mobile scaling method.
Background technology
In image measurement process and machine vision applications, in order to obtain object more comprehensively information, past The morphological characteristic of reconstruction of objects is carried out with the use of collection subject image toward needing multiple cameras.Wherein, cooperation makes Camera need to set up the spatial relationship determined, and be allowed to unified in identical coordinate system, Can the morphological characteristic of reconstruction of objects accurately, camera is i.e. demarcated by this process.
In the prior art, for the demarcation of robot system, the general method using artificial teaching, example As, manually control robot with multiple different attitude (for six-joint robot, generally four Plant or more kinds of different attitude) instrument installed on it is moved to same impact point.But, owing to needing To judge whether instrument moves to same impact point by human eye, therefore, inevitably to there is error, Cause the instrument transfer matrix relative to tool center point (the tool center point) coordinate system of robot Demarcate inaccurate, and manually control robot and arrive same impact point and dependence with multiple different attitude Human eye judges whether that the work arriving same impact point is the most time-consuming, affects work efficiency.Frequent for needs The robot system of replacing instrument, after often changing an instrument, will once re-scale, non- Often trouble, the most time-consuming.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of horizontal machine people without reasoning and calculating and moves phase Machine Multipoint movable scaling method, has and sets the advantage simply and automatically demarcated, and Onsite Maintenance Engineer is permissible One-touch solution point demarcation problem, demarcates efficiency height, and maintenance cost is relatively low.
In order to solve above-mentioned technical problem, the present invention adopts the following technical scheme that
A kind of horizontal machine people's mobile camera Multipoint movable scaling method, including pedestal, is installed on the water of pedestal Flat robot, it is fixed on the scaling board of pedestal and is fixed on the mobile camera in the swing arm of horizontal machine people, water The actuating station of flat robot is provided with probe, it is characterised in that: described scaling board be provided with coordinate of the center of circle and Enclose one-level fixed point position and two grades of fixed point positions, two grades of fixed points of at least nine that are located at week in coordinate of the center of circle week Position is positioned at the periphery of one-level fixed point position, and this scaling board is positioned at the lower section of probe and camera, and scaling board exists In the actuating range of horizontal machine people;Camera calibration step includes:
Step A, horizontal machine people control probe and carry out moving back and forth in X-direction and Y-direction, work as probe When being directed at the coordinate of the center of circle of described scaling board, horizontal machine people obtains current coordinate data, to primarily determine that The position of coordinate of the center of circle;
Step B, perform one-level demarcate, horizontal machine people control probe be directed at the most one by one described at least nine One-level fixed point position, often one one-level fixed point position of alignment, horizontal machine people obtains a current number of coordinates According to, carry out the one-level to coordinate of the center of circle according to the coordinate data of whole one-level fixed point positions and demarcate;
Step C, perform two grades of demarcation, horizontal machine people control probe be directed at the most one by one described at least nine Two grades of fixed point positions, often one two grades of fixed point position of alignment, horizontal machine people obtains a current number of coordinates According to, carry out to coordinate of the center of circle two grades of demarcation according to the coordinate data of all second-order fixed point position;
Preferably, the periphery of described two grades of fixed point positions is provided with at least nine three grades of fixed point positions, camera mark Determining step and also include step D, perform three grades of demarcation, horizontal machine people controls probe and is directed at described the most one by one At least nine three grades of fixed point positions, often one three grades of fixed point position of alignment, horizontal machine people obtains one currently Coordinate data, carry out to coordinate of the center of circle three grades of demarcation according to the coordinate data of whole three grades of fixed point positions.
Preferably, the periphery of described three grades of fixed point positions is provided with at least nine level Four fixed point positions, camera mark Determining step and also include step E, perform level Four and demarcate, horizontal machine people controls probe and is directed at described the most one by one At least nine level Four fixed point positions, often one level Four fixed point position of alignment, horizontal machine people obtains one currently Coordinate data, according to the coordinate data of whole level Four fixed point positions carry out the level Four to coordinate of the center of circle demarcate.
Preferably, the quantity of described one-level fixed point position, two grades of fixed point positions and three grades of fixed point positions is nine Individual, and it is the equidistant placement of three row three row.
Another is preferred, and the quantity of described one-level fixed point position, two grades of fixed point positions and three grades of fixed point positions is equal It is 16, and is the equidistant placement of four rows and four columns.
The beneficial effects of the present invention is:
The invention provides a kind of horizontal machine people's mobile camera Multipoint movable scaling method, water of the present invention Flat robot mobile camera Multipoint movable scaling method, the invention provides a kind of horizontal machine people's mobile camera Multipoint movable scaling method, in conjunction with the operation of sequencing, it is possible to achieve the multi-point calibration action of one-touch automatization, And thick demarcation to mobile camera parameter and essence demarcating steps can be done step-by-step, there is setting and simply and automatically mark Fixed advantage, Onsite Maintenance Engineer can one-touch solution point demarcation problem, it is high to demarcate efficiency, safeguards Cost is relatively low.
Accompanying drawing explanation
Fig. 1 is horizontal machine people of the present invention, mobile camera and the perspective view of scaling board.
Fig. 2 is the perspective view of the scaling board of the present invention.
Fig. 3 is the horizontal machine people of the present invention mobile sequential schematic when detecting fixed point position.
Detailed description of the invention
For the ease of the understanding of those skilled in the art, below in conjunction with embodiment and accompanying drawing, the present invention is made into one The explanation of step, the content that embodiment is mentioned not limitation of the invention.
It is the present invention a kind of horizontal machine people's mobile camera Multipoint movable scaling method as shown in Figure 1 to Figure 3 Embodiment one, including pedestal, the horizontal machine people 1 being installed on pedestal, the scaling board 2 being fixed on pedestal and The mobile camera 3 being fixed in the swing arm of horizontal machine people 1, the actuating station of horizontal machine people 1 is provided with spy Pin 4, described scaling board 2 is provided with coordinate of the center of circle 21 and enclosing and is located at nine of 21 weeks weeks of coordinate of the center of circle One-level fixed point position 22 and two grades of fixed point positions 23, two grades of fixed point positions 23 are positioned at one-level fixed point position 22 Peripheral at, this scaling board 2 is positioned at the lower section of probe 4 and camera, and scaling board 2 is horizontal machine people 1 Actuating range in;Camera calibration step includes:
Step A, horizontal machine people 1 control probe 4 and carry out moving back and forth in X-direction and Y-direction, when When probe 4 is directed at the coordinate of the center of circle 21 of described scaling board 2, horizontal machine people 1 obtains current coordinate data, To primarily determine that the position of coordinate of the center of circle 21;
Step B, execution one-level are demarcated, and horizontal machine people 1 controls probe 4 and is directed at described nine the most one by one One-level fixed point position 22, often one one-level fixed point position 22 of alignment, horizontal machine people 1 obtain one current Coordinate data, carries out the one-level mark to coordinate of the center of circle 21 according to the coordinate data of whole one-level fixed point positions 22 Fixed, to realize the thick demarcation to mobile camera 3 parameter;
Step C, perform two grades of demarcation, horizontal machine people 1 control probe 4 be directed at the most one by one described at least Nine two grades of fixed point positions 23, often one two grades of fixed point position 23 of alignment, horizontal machine people 1 obtains one and works as Front coordinate data, carries out two to coordinate of the center of circle 21 according to the coordinate data of all second-order fixed point position 23 Level is demarcated, to realize the essence demarcation to mobile camera 3 parameter.
The invention provides a kind of horizontal machine people's mobile camera Multipoint movable scaling method, in conjunction with sequencing Run, it is possible to achieve the multi-point calibration action of one-touch automatization, and can be done step-by-step mobile camera 3 parameter Thick demarcate and essence demarcating steps, have and set the advantage simply and automatically demarcated, Onsite Maintenance Engineer can With one-touch solution point demarcation problem, demarcating efficiency height, maintenance cost is relatively low.
In the present embodiment, fixed point position 23,22, two grades, described one-level fixed point position and three grades of fixed point positions 24 Quantity be nine, and be three rows three row equidistant placement.The periphery of described two grades of fixed point positions 23 sets Being equipped with nine three grades of fixed point positions 24, camera calibration step also includes step D, performs three grades of demarcation, level Robot 1 control probe 4 be directed at the most one by one described at least nine three grades of fixed point positions 24, often alignment one Three grades of fixed point positions 24, horizontal machine people 1 obtains a current coordinate data, according to whole three grades of demarcation The coordinate data of some position 24 carries out three grades to coordinate of the center of circle 21 demarcation, and one-level is demarcated and can be considered as with two grades Mobile camera 3 parameter slightly demarcated action, demarcates for three grades and move as the essence of mobile camera 3 parameter is demarcated Making, can improve the accuracy of mobile camera 3 parameter further, stated accuracy is higher.
Certainly, the required precision according to mobile camera 3 parameter is different, such as at the equipment that stated accuracy is high In, it is also possible to nine level Four fixed point positions 25, camera mark are set in the periphery of described three grades of fixed point positions 24 Determining step and also include step E, perform level Four and demarcate, horizontal machine people 1 controls probe 4 and is directed at the most one by one Described at least nine level Four fixed point positions 25, often one level Four fixed point position 25 of alignment, horizontal machine people 1 obtains Take a current coordinate data, carry out coordinate of the center of circle according to the coordinate data of whole level Four fixed point positions 25 The level Four of 21 is demarcated, thus realizes the further raising of mobile camera 3 parameter calibration precision.
It should be added that, when improving the stated accuracy of mobile camera 3 parameter, multistage except increasing Outside the method for fixed point position, it is also possible to realized, such as: described by the method increasing fixed point bit quantity The quantity of 22, two grades of fixed point positions 23, one-level fixed point position and three grades of fixed point positions 24 is 16, and It is the equidistant placement of four rows and four columns.The most also can reach to improve the purpose of stated accuracy, practicality is stronger.
Embodiment described above only have expressed one embodiment of the present invention, and it describes more concrete and detailed, But therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that, for this area Those of ordinary skill for, without departing from the inventive concept of the premise, it is also possible to make some deformation and Improving, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended Claim is as the criterion.

Claims (5)

1. horizontal machine people mobile camera Multipoint movable scaling method, including pedestal, is installed on the level of pedestal Robot (1), it is fixed on the scaling board (2) of pedestal and is fixed in the swing arm of horizontal machine people (1) Mobile camera (3), the actuating station of horizontal machine people (1) is provided with probe (4), it is characterised in that: described Scaling board (2) is provided with coordinate of the center of circle (21) and enclosing and is located at least nine of week in coordinate of the center of circle (21) week One-level fixed point position (22) and two grades of fixed point positions (23), two grades of fixed point positions (23) are positioned at one-level mark At the periphery of fixed point position (22), this scaling board (2) is positioned at probe (4) and the lower section of camera, and demarcates Plate (2) is in the actuating range of horizontal machine people (1);Camera calibration step includes:
Step A, horizontal machine people (1) control probe (4) and carry out moving back in X-direction and Y-direction Dynamic, when probe (4) is directed at coordinate of the center of circle (21) of described scaling board (2), horizontal machine people (1) Obtain current coordinate data, to primarily determine that the position of coordinate of the center of circle (21);
Step B, execution one-level are demarcated, and horizontal machine people (1) controls probe (4) and is directed at institute the most one by one State at least nine one-level fixed point positions (22), often one one-level fixed point position (22) of alignment, horizontal machine people (1) obtain a current coordinate data, carry out according to the coordinate data of whole one-level fixed point positions (22) The one-level of coordinate of the center of circle (21) is demarcated;
Step C, two grades of demarcation of execution, horizontal machine people (1) controls probe (4) and is directed at institute the most one by one State at least nine two grades fixed point positions (23), often one two grades fixed point positions (23) of alignment, horizontal machine people (1) obtain a current coordinate data, carry out according to the coordinate data of all second-order fixed point position (23) Two grades of demarcation to coordinate of the center of circle (21).
Horizontal machine people's mobile camera Multipoint movable scaling method the most according to claim 1, its feature It is: the periphery of described two grades of fixed point positions (23) is provided with at least nine three grades fixed point positions (24), phase Machine demarcating steps also includes step D, performs three grades of demarcation, and horizontal machine people (1) controls probe (4) and depends on At least nine three grades fixed point positions (24), often one three grades fixed point positions (24) of alignment described in secondary alignment one by one, Horizontal machine people (1) obtains a current coordinate data, according to the seat of whole three grades of fixed point positions (24) Mark data carry out three grades of demarcation to coordinate of the center of circle (21).
Horizontal machine people's mobile camera Multipoint movable scaling method the most according to claim 2, its feature It is: the periphery of described three grades of fixed point positions (24) is provided with at least nine level Four fixed point positions (25), phase Machine demarcating steps also includes step E, performs level Four and demarcates, and horizontal machine people (1) controls probe (4) and depends on At least nine level Four fixed point positions (25), often one level Four fixed point position (25) of alignment described in secondary alignment one by one, Horizontal machine people (1) obtains a current coordinate data, according to the seat of whole level Four fixed point positions (25) Mark data carry out the level Four to coordinate of the center of circle (21) and demarcate.
Horizontal machine people's mobile camera Multipoint movable scaling method the most according to claim 2, its feature It is: described one-level fixed point position (22), two grades of fixed point positions (23) and three grades of fixed point positions (24) Quantity is nine, and is three row three row equidistant placement.
Horizontal machine people's mobile camera Multipoint movable scaling method the most according to claim 2, its feature It is: described one-level fixed point position (22), two grades of fixed point positions (23) and three grades of fixed point positions (24) Quantity is 16, and is four rows and four columns equidistant placement.
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CN108274459A (en) * 2018-01-05 2018-07-13 高创传动科技开发(深圳)有限公司 The scaling method and system of industrial robot
CN109159114A (en) * 2018-08-16 2019-01-08 郑州大学 The accuracy method of SCARA manipulator fixed camera vision system hand and eye calibrating
CN110625600A (en) * 2019-10-29 2019-12-31 华中科技大学 Robot tail end workpiece coordinate system calibration method
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CN113840695A (en) * 2019-09-05 2021-12-24 西门子(中国)有限公司 Calibration inspection component, robot system, inspection method and calibration method
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