Autonomous Working Device Braking Control for Safety and Productivity

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Solution Overview

Problem

Existing autonomous working devices, such as cleaning robots, face challenges in ensuring operational safety and reliability, particularly in industrial settings, where detecting obstacles or critical situations requires immediate and effective braking to prevent damage to the device or its surroundings.

Innovation Solution

A method for operating autonomous working devices that involves detecting safety-relevant situations using sensor systems, initiating a braking process, processing driving parameters, and selectively choosing between continuing the braking process or triggering an emergency braking process based on these parameters to ensure timely and effective stopping or redirection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the working device operates closer to edges and obstacles to increase productivity, then productivity is improved, but operational safety deteriorates due to higher risk of contact

Engineering Contradiction:
Improveoperational productivityVSAvoidoperational safety
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The system dynamically adjusts the braking response based on real-time driving parameters such as speed, distance to obstacle, and deceleration capability. This dynamic adaptation allows the device to operate closer to edges and obstacles with confidence, as the braking system automatically adjusts its response based on the specific situation, maintaining safety while enabling higher productivity.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The control device processes multiple driving parameters (speed, distance, deceleration rate) and changes the braking strategy based on their values. When operating closer to obstacles at lower speeds, the system may use gentler braking, while at higher speeds or greater distances, it prepares for more aggressive braking, allowing flexible operation near edges and obstacles.

Inventive Principle:
Principle #35Parameter changes

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

This method enhances operational safety and reliability by minimizing unnecessary emergency stops and user interactions, allowing the device to operate autonomously closer to edges and obstacles while preventing potential damage, thereby increasing its operational autonomy and spectrum.

Implementation Method 1

Detection of a safety-relevant operating situation using at least one sensor system of the working device

Methodology Applied
Scientific EffectSensor detection:

Implementation Method 2

initiating a braking process, the braking process including using at least one drive motor of the working device to reduce speed

Methodology Applied
Scientific EffectElectromagnetic braking:

Data Source

PatentUS20240343235A1Method for operating a working device and working device
Publication Date: 2024.10.17 VORWERK & CO INTERHOLDING GMBH
  • US20240343235A1 patent drawing
  • US20240343235A1 patent drawing
  • US20240343235A1 patent drawing

AI summary

A method for operating a working device and a working device. A working device, in particular for industrial applications, and a method for operating a working device, in which the operational safety and operational reliability are increased, are realized by carrying out at least the following method steps:detecting a safety-relevant operating situation using at least one sensor system of the working device,initiating a braking process, the braking process including using at least one drive motor of the working device to reduce speed when a critical operating situation has been detected,processing of at least one driving parameter determined after initiating the braking process,selecting between a continuation of the braking process or the initiation of an emergency braking process depending at least on the processed driving parameter.