Optical Robot Arm Calibration via Light Beam Sensing
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Solution Overview
Problem
Current robot calibration methods are costly and inefficient, requiring disassembly and transportation for off-site calibration, which is time-consuming and expensive, and fail to maintain precision due to mechanical deviations caused by fatigue and assembly errors, limiting the reliability of production lines.
Innovation Solution
A calibration equipment and method using a light emitter and light sensing module with multiple image sensors to emit and receive light beams, generating image data and kinematic parameters, allowing for on-site calibration and monitoring of robot arms to compensate for precision deviations and maintain accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If off-site calibration is performed by dismantling and transporting robot systems to original equipment manufacturers, then calibration accuracy can be maintained, but time consumption and cost increase significantly
Solution Approach 1:
The patent introduces a light beam as an intermediary medium to transfer position information from the robot arm to the sensing module. This light-based measurement system enables accurate calibration data acquisition without requiring physical disassembly or transportation of the robot system, thus maintaining calibration accuracy while eliminating time loss associated with off-site calibration procedures
Solution Approach 2:
The patent replaces traditional mechanical measurement and calibration systems with an optical measurement system using light beams and light sensing units. This substitution eliminates the need for mechanical disassembly and physical transportation of robot components, achieving both high measurement precision and time efficiency through non-contact optical measurement
2Measurement precision
If off-site calibration is performed by dismantling and transporting robot systems, then calibration accuracy can be maintained, but calibration cost increases due to transportation and labor
Solution Approach 1:
The light beam serves as an intermediary that enables accurate calibration measurement to be performed in-situ without requiring expensive transportation of robot systems to calibration facilities. The optical measurement system provides a cost-effective alternative to traditional off-site calibration while maintaining high accuracy standards
Solution Approach 2:
The patent replaces expensive mechanical calibration equipment and transportation infrastructure with a compact optical measurement system. This substitution dramatically reduces calibration costs by eliminating transportation expenses, labor costs for disassembly and reassembly, while maintaining high calibration accuracy through precise optical measurement
3Loss of time
If simple on-site calibration services are provided by a few companies, then time consumption is reduced, but calibration accuracy is insufficient due to expensive and huge calibration equipment
Solution Approach 1:
The patent replaces complex and expensive mechanical calibration equipment with a simplified optical measurement system consisting of a light emitter and light sensing units. This substitution maintains the time efficiency of on-site calibration while dramatically reducing equipment complexity and cost, making accurate calibration accessible without requiring bulky mechanical measurement devices
Solution Approach 2:
The patent uses optical copying of position information through light beam projection and sensing. Instead of requiring complex physical measurement devices, the system creates an optical replica of the robot arm's position and orientation, enabling accurate calibration measurements with simple, lightweight equipment that can be easily deployed on-site
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables accurate on-site calibration and monitoring of robot arms, reducing costs and maintaining precision, thereby improving production line reliability and reducing the need for expensive calibration instruments.
Implementation Method 1
The plurality of light sensing units receive the light beam and generate a plurality of image data
Data Source
AI summary
A calibration equipment of a mechanical system includes a light emitter emitting a light beam, a light sensing module, and an operating module. The light sensing module includes a carrier plate, and a plurality of light sensing units located on the carrier plate. The plurality of light sensing units receive the light beam and generate a plurality of image data. The operating module receives the plurality of image data and generates a calibrated kinematic parameter.