Robot Hand Confirmation Positioning for Accurate Object Recognition

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Solution Overview

Problem

Existing robot systems struggle with accurate recognition of target objects when surface position information deviates from the actual position, leading to incorrect execution of processes requiring precise object recognition, such as packaging or barcode reading.

Innovation Solution

A robot system with a grasping mechanism and control means that moves a target object to a confirmation position for recognition before proceeding to a predetermined destination, allowing for accurate recognition and movement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If surface position information of a target object is used for recognition, then recognition process can be simplified, but recognition accuracy deteriorates when surface position information deviates from actual position

Engineering Contradiction:

Improverecognition process simplicityVSAvoidrecognition accuracy

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The system performs a preliminary action by moving the target object to a confirmation position before the actual recognition process. At this confirmation position, the object is re-recognized to obtain accurate position and posture information, which is then used for subsequent processing. This preliminary relocation ensures that the object is in the correct state for accurate recognition without requiring complex real-time corrections.

Inventive Principle:

Principle #10Preliminary action

2Productivity

If direct movement to predetermined position is performed, then movement efficiency is improved, but recognition accuracy at destination deteriorates

Engineering Contradiction:

Improvemovement efficiencyVSAvoidrecognition accuracy at destination

Core Design Contradiction:

ProductivityVSMeasurement precision

Solution Approach 1:

The movement process is segmented into two distinct phases: first, moving the target object to a confirmation position for accurate recognition; second, moving the object from the confirmation position to the final predetermined position. This segmentation allows the system to prioritize recognition accuracy at the confirmation position while maintaining overall movement efficiency through the structured two-step approach.

Inventive Principle:

Principle #1Segmentation

3Loss of time

If single-stage movement without confirmation is performed, then process time is reduced, but success probability of accurate recognition processes deteriorates

Engineering Contradiction:

Improveprocess timeVSAvoidsuccess probability of recognition processes

Core Design Contradiction:

Loss of timeVSReliability

Solution Approach 1:

The system implements feedback by performing recognition at the confirmation position and using this confirmed information to verify the object's position and posture before final movement. This feedback mechanism ensures that the object is correctly positioned and recognized, thereby increasing the success probability of subsequent processes such as packaging or barcode reading, while the overall time loss is minimized through efficient confirmation positioning.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS20250296231A1Robot system, control method, and recording medium

Publication Date: 2025.09.25 NEC CORP

AI summary

A robot system includes a robot hand configured to grasp a target object and a processor configured to control, in a case where a control process of moving the target object to a predetermined position is performed, the robot hand so that the target object is moved to a confirmation position where the target object is recognized and the target object is moved from the confirmation position to the predetermined position.