Robot Arm Stereo Imaging With Adjustable Baseline Length
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Solution Overview
Problem
Existing robot systems with imaging devices struggle to accurately measure distances to target objects with varying baseline lengths, limiting their workability and flexibility, especially when the distance between the end effector and the target object changes significantly.
Innovation Solution
A robot system with a movable first and second imaging device attached to the end effector, where the baseline length between the two devices can be adjusted dynamically based on the distance to the target object, allowing for accurate distance measurement and improved workability by changing the baseline length in response to changing object distances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a fixed baseline length is used between imaging devices, then the device structure is simple, but the measurement accuracy deteriorates when the distance to the target object varies significantly
Solution Approach 1:
The patent applies the dynamics principle by making the baseline length between the first and second imaging devices adjustable rather than fixed. The imaging device includes a movable portion that allows changing the distance (baseline length) between imaging devices according to the distance to the target object. This dynamic adjustment resolves the contradiction by enabling accurate distance measurement across varying distances while maintaining a relatively simple device structure that only requires basic movement mechanisms.
2Measurement precision
If the baseline length is changed to improve distance measurement accuracy, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The patent implements dynamics by providing an adjustable baseline length between imaging devices. The imaging device includes a movable portion that enables changing the distance between the first and second imaging devices based on the target object distance. This allows the system to adapt to different measurement scenarios without requiring multiple fixed configurations, thereby improving measurement precision while controlling device complexity through a single adjustable mechanism rather than multiple fixed systems.
3Measurement precision
If multiple imaging devices with fixed positions are used, then the measurement accuracy is limited, but adding more devices increases system complexity
Solution Approach 1:
The patent applies dynamics by making the baseline length adjustable rather than fixed. The imaging device includes a movable portion that allows changing the distance between imaging devices according to the distance to the target object. This single dynamic adjustment mechanism provides adaptability to various measurement distances without requiring multiple separate imaging device systems, thereby improving versatility while controlling system complexity.
Data Source
AI summary
A robot system including a robot arm with a movable portion includes a first imaging device and a second imaging device attached to the robot arm, a control unit that controls the robot system, a distance information acquisition unit that acquires information on a distance to a target object, the control unit is capable of changing a baseline length that is a distance between the first imaging device and the second imaging device, and the distance information acquisition unit acquires the information on the distance to the target object on the basis of the baseline length.