Semiconductor Magazine Robot Docking With Dual-Direction Obstacle Sensing

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Solution Overview

Problem

In semiconductor manufacturing, mobile robots face limitations in obstacle detection, leading to restricted movement and precision errors, which reduce process efficiency in automated manufacturing lines.

Innovation Solution

A mobile robot equipped with first and second sensor members for horizontal and vertical obstacle detection, and additional sensor members for alignment control and charging, enabling precise movement and stable operation within the manufacturing process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a single sensor member is used for obstacle detection, then the device complexity is reduced, but the measurement precision and reliability of obstacle detection deteriorates

Engineering Contradiction:
Improvesensor configurationVSAvoidobstacle detection precision
Core Design Contradiction:
Device complexityVSMeasurement precision

Solution Approach 1:

The obstacle detection function is segmented into multiple specialized sensor members: a first sensor member for horizontal direction detection and a second sensor member for vertical direction detection. This segmentation allows each sensor to be optimized for its specific detection direction, improving overall detection precision while maintaining manageable system complexity through functional specialization.

Inventive Principle:
Principle #1Segmentation

2Device complexity

If obstacle detection capability is limited, then the device complexity is reduced, but the productivity and mobility of the mobile robot deteriorates

Engineering Contradiction:
Improvedetection systemVSAvoidprocess efficiency
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The sensor members are positioned at specific locations on the mobile robot to detect obstacles in particular directions. The first sensor member detects horizontal obstacles while the second sensor member detects vertical obstacles, creating localized detection zones that collectively cover all potential obstacle directions, thereby improving productivity without requiring a uniformly complex detection system throughout the entire robot.

Inventive Principle:
Principle #3Local quality

3Manufacturing precision

If alignment precision is improved through additional sensor members, then the manufacturing precision is improved, but the device complexity increases

Engineering Contradiction:
Improvealignment precisionVSAvoidsensor system
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The sensor members serve multiple functions: they detect obstacles during movement and also perform alignment detection when the mobile robot approaches process facilities. This multi-functionality allows the same hardware components to improve manufacturing precision without proportionally increasing device complexity, as the sensors are already present for obstacle detection and are additionally utilized for alignment purposes.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 mobile robot enhances process precision and efficiency by accurately detecting obstacles and minimizing alignment errors, preventing collisions, and ensuring continuous operation through simultaneous charging, thereby improving the overall semiconductor magazine operation system.

Implementation Method 1

a first sensor member disposed on a side surface of the transport member and a second sensor member spaced apart from the first sensor member, wherein the first sensor member senses an obstacle in a horizontal direction of the transport member

Methodology Applied
Scientific EffectElectromagnetic radiation detection: Absorption (EM radiation)

Implementation Method 2

the second sensor member senses an obstacle in a vertical direction of the transport member

Methodology Applied
Scientific EffectElectromagnetic radiation detection: Absorption (EM radiation)

Data Source

PatentUS20240025044A1Mobile robot and semiconductor magazine operation system using mobile robot
Publication Date: 2024.01.25 LG INNOTEK CO LTD
  • US20240025044A1 patent drawing
  • US20240025044A1 patent drawing
  • US20240025044A1 patent drawing

AI summary

A mobile robot according to an embodiment comprises a transport member and an operating member arranged on the transport member, wherein the transport member comprises a first sensor member arranged on a side surface of the transport member and a second sensor member which is spaced apart from the first sensor member. The first sensor member senses an obstacle in the horizontal direction of the transport member, and the second sensor member senses an obstacle in the vertical direction of the transport member. A semiconductor magazine operation system according to an embodiment comprises: a step of transferring a command to a mobile robot; a step in which the mobile robot moves to a first processing facility and performs an operation; and a step in which the mobile robot moves to a third processing facility and performs an operation, wherein the step in which the mobile robot moves to the first processing facility and performs the operation and the step in which the mobile robot moves to the third processing facility and performs the operation include a docking step for docking the mobile robot to the first processing facility or the third processing facility, and the docking step includes an aligning process.