Camera-Guided Object Grasping for Real-Time Position Correction

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Solution Overview

Problem

Existing object grasping systems are not efficient in accurately determining the relative position and posture of objects for reliable grasping and transportation, particularly in environments with multiple objects of varying orientations and positions.

Innovation Solution

An object grasping system comprising a camera, a grasping unit, and a control unit that continuously calculates and adjusts the relative position and posture of the grasping unit based on images captured by the camera, using machine learning and 3D distance estimation to ensure precise object detection and handling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional object grasping systems are used, then basic grasping function is provided, but grasping efficiency and accuracy are insufficient

Engineering Contradiction:

Improvegrasping efficiencyVSAvoidrelative position determination accuracy

Core Design Contradiction:

ProductivityVSMeasurement precision

Solution Approach 1:

The system continuously captures images of the object during movement and uses the camera to repeatedly specify the relative position of the object with respect to the grasping unit. This real-time feedback mechanism allows the control unit to adjust the grasping unit's position and posture dynamically, improving both grasping efficiency and positional accuracy simultaneously.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The control unit moves the grasping unit toward the object while pre-calculating and specifying the relative position based on captured images before actual contact. This preliminary positioning action enables the system to approach the object efficiently while maintaining accurate position determination, resolving the contradiction between speed and precision.

Inventive Principle:

Principle #10Preliminary action

2Speed

If the grasping unit moves quickly toward the object, then productivity improves, but position specification accuracy deteriorates

Engineering Contradiction:

Improvegrasping unit movement speedVSAvoidrelative position specification accuracy

Core Design Contradiction:

SpeedVSMeasurement precision

Solution Approach 1:

The system performs continuous image capture and repeated relative position specification throughout the movement process. This continuous action ensures that even at high speeds, the position data remains current and accurate, allowing fast movement without sacrificing measurement precision.

Inventive Principle:

Principle #20Continuity of useful action

Solution Approach 2:

The system dynamically adjusts the grasping unit's movement based on real-time image data and repeatedly updated relative position information. This dynamic control allows the system to maintain high speed while continuously correcting position specifications to ensure accuracy.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS20220016764A1Object grasping system

Publication Date: 2022.01.20 JAPAN CASH MASCH CO LTD

AI summary

There is provided an object grasping system (100) including a camera (150), a grasping unit (140), and a control unit (110) for moving the grasping unit (140) toward an object (200A) while repeatedly specifying a relative position of the object (200A) with respect to the grasping unit (140) based on an image taken by the camera (150).