Light indicator system for an autonomous mobile robot

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Solution Overview

Problem

Autonomous mobile robots lack effective visual indicators to communicate their status and conditions to users, leading to confusion and difficulty in troubleshooting issues.

Innovation Solution

A light indicator system on the robot that uses a light-propagating plate and multiple light sources to generate patterns of illumination, synchronized with a controller to convey status information, such as operation duration, battery charge, and error locations, ensuring intuitive understanding by users.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If traditional single-point indicator lights are used, then the device complexity is low, but the information transmission capability and user understanding are insufficient

Engineering Contradiction:
Improvestatus information transmissionVSAvoidlight indicator system complexity
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The indicator system is segmented into multiple light sources (first, second, third light sources) positioned at different locations on the robot body. Each light source can be independently controlled to indicate different status information, allowing comprehensive status communication without requiring a complex single indicator

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent transitions from traditional single-point vertical indicator lights to a two-dimensional arrangement of multiple light sources on the robot's body surface. This spatial distribution across the body perimeter enables directional indication and more丰富的 status communication while maintaining simple individual light source components

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Ease of operation

If multiple light sources are distributed across the robot body, then the visual indication capability is improved, but the device complexity increases

Engineering Contradiction:
Improveuser interaction with status informationVSAvoidlight source arrangement complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

Different light sources are positioned at specific locations corresponding to different robot components (front, rear, sides). Each light source provides localized status indication relevant to its position, making it easier for users to understand which specific component or direction is being indicated without complex centralized control

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The multiple light sources collectively serve multiple functions: indicating overall robot status, directional information, component-specific states, and operational modes. This multi-functionality is achieved through simple positional distribution rather than complex individual light source designs

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 system provides clear and consistent visual feedback to users about the robot's status and conditions, facilitating easier operation and maintenance by aligning visual cues across multiple devices, enhancing user experience and efficiency.

Implementation Method 1

light sources each being positioned to direct light through only a portion of the plate to only a portion of the continuous loop

Methodology Applied
Scientific EffectLight propagation: Light

Data Source

PatentEP3500900B1Light indicator system for an autonomous mobile robot
Publication Date: 2023.08.16 IROBOT CORP
  • EP3500900B1 patent drawingFigure 1
  • EP3500900B1 patent drawingFigure 2A~2B
  • EP3500900B1 patent drawingFigure 2C

AI summary

An autonomous mobile robot includes a body, a drive supporting the body above a floor surface, a light-propagating plate positioned on the body and having a periphery defining a continuous loop, light sources each being positioned to direct light through a portion of the plate to a portion of the continuous loop, and a controller to selectively operate the light sources to provide a visual indicator of a status or service condition of the autonomous mobile robot. The drive is configured to maneuver the mobile robot about the floor surface.