Industrial Robot Touch Interface with Safety Controller

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Solution Overview

Problem

Existing methods for operating industrial robots using graphical user interfaces with touch displays are complex to manufacture, prone to operational errors, and difficult to use in adverse conditions due to the need for constant visual attention and susceptibility to accidental inputs.

Innovation Solution

A method that uses a touch display with virtual operating elements, where graphic information is positioned randomly and only functions are triggered by specific gestures, reducing hardware components and allowing for 'blind operation with haptic marks, ensuring safety and reliability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If manual control device includes multiple manually operable input means for controlling each traversing means, then control functionality is complete, but device complexity and susceptibility to operation errors increase

Engineering Contradiction:
Improvecontrol functionalityVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

A single manually operable input means (joystick) is designed to control multiple traversing means (robotic arm, end effector, base) through a unified control scheme. The joystick generates control signals that are processed by the robot controller to coordinate movements across different degrees of freedom, allowing one input device to perform multiple control functions that previously required separate inputs for each traversing means.

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

2Measurement precision

If operator must constantly look at touchscreen to operate virtual keys, then input precision improves, but ease of operation deteriorates in adverse conditions

Engineering Contradiction:
Improveinput precisionVSAvoidease of operation
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The patent replaces the touchscreen interface with virtual keys requiring visual attention with a physical joystick and button interface. The joystick provides tactile feedback and mechanical resistance, allowing operators to control the robotic system without visual confirmation. Physical buttons provide tactile confirmation of input, eliminating the need to look at a display screen while maintaining input precision through ergonomic design and force feedback.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Device complexity

If touch display is used for control inputs, then device complexity reduces, but reliability deteriorates due to accidental inputs

Engineering Contradiction:
Improvedevice complexityVSAvoidreliability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The patent implements selective input methods for different control functions. Critical safety-related functions (emergency stop, mode switching) use physical buttons and joysticks that require deliberate mechanical action, preventing accidental activation. Non-critical functions may use touch display inputs. This differentiation of input modalities based on the criticality of the function maintains low device complexity while ensuring high reliability for essential operations.

Inventive Principle:
Principle #3Local quality

4Reliability

If multiple hardware components are used for control, then reliability improves, but ease of manufacture deteriorates

Engineering Contradiction:
ImprovereliabilityVSAvoidease of manufacture
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent combines multiple control functions into integrated components. The joystick assembly integrates analog stick movement with directional buttons and trigger switches into a single modular unit. The robot controller integrates signal processing, safety monitoring, and coordinate transformation algorithms into one centralized controller. This consolidation reduces the number of separate hardware components that need to be manufactured and assembled, simplifying production while maintaining system reliability through integrated safety checks and error handling.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP2834050B1Method for operating an industrial robot
Publication Date: 2016.08.24 REIS GROUP HOLDING GMBH & CO KG
  • EP2834050B1 patent drawingFigure 1
  • EP2834050B1 patent drawingFigure 2
  • EP2834050B1 patent drawingFigure 3~4

AI summary

The invention relates to a method for operating an industrial robot (12) by means of an operating device (10) comprising a graphical user interface (18) having a touch display (20). According to the invention, in order to improve the operating safety of the industrial robot, at least one virtual operating element representing a function of the industrial robot (12) is displayed on the touch display (20), a control signal associated with said virtual operating element is sent to a safety controller, and an image is produced by means of the safety controller, which image is then displayed on the touch display (20). If the image is touched on the touch display, feedback is given to the safety controller so that a function of the industrial robot can be carried out if the displayed image and touching of said image on the touch display match.