Work Machine Operation Assistance System Area Integration

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Solution Overview

Problem

In work machines with both operation assistance and work assistance functions, setting the areas for these functions individually can be inconvenient, and there is a risk of collision if the operation assistance function is not enabled or forgotten, leading to potential contact with objects in the work area.

Innovation Solution

The operation assistance system integrates the work area setting as the stop area based on detection information and attitude information, ensuring the work machine stops when an object is detected within the set stop area and prevents it from leaving the work area, thereby reducing operator inconvenience and preventing collisions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the operation assistance function and work assistance function areas are set individually, then each function can operate independently, but the operator finds the area setting inconvenient and may forget to enable the operation assistance function

Engineering Contradiction:
Improvecollision prevention reliabilityVSAvoidarea setting convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent merges the area setting process for both operation assistance function and work assistance function into a single unified setting. When the operator sets the work area for the work assistance function, the system automatically uses this same area as the stop area for the operation assistance function, eliminating the need for separate area settings and reducing the risk of forgetting to enable the operation assistance function.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The system performs preliminary action by automatically enabling the operation assistance function and setting its stop area whenever the work assistance function's work area is set. This preliminary configuration ensures that collision prevention is already active before the operator begins work, without requiring additional manual configuration steps.

Inventive Principle:
Principle #10Preliminary action

2Measurement precision

If the operation assistance function area is set inside the work area, then collision detection is improved, but the operator may forget to enable the function resulting in undetected objects

Engineering Contradiction:
Improveobject detection precisionVSAvoidcollision prevention reliability
Core Design Contradiction:
Measurement precisionVSReliability

Solution Approach 1:

The patent combines the area settings so that the work area and stop area are unified. This ensures that the operation assistance function's detection area is always properly configured within the work area, eliminating the risk of detection gaps while maintaining precise object detection capabilities.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The system performs self-service by automatically enabling the operation assistance function and configuring its detection area when the work assistance function is activated. This self-configuration ensures that object detection is always active and properly positioned within the work area without relying on the operator's memory or additional manual setup.

Inventive Principle:
Principle #25Self-service

3Adaptability or versatility

If separate area settings are required for operation assistance and work assistance functions, then each function can be optimized independently, but the device complexity increases

Engineering Contradiction:
Improvefunction optimization flexibilityVSAvoidarea setting complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent merges the area setting mechanisms of both functions into a single unified setting process. The controller integrates the area setting operations so that one setting action configures both the work assistance function's work area and the operation assistance function's stop area, reducing device complexity while maintaining functional independence.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent implements universality by creating a multi-functional area setting system where a single area configuration serves dual purposes: defining the work area for work assistance and the stop area for operation assistance. This universal setting approach simplifies the device while maintaining the ability to optimize both functions.

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

Data Source

PatentUS12077945B2Operation assistance system for work machine having an extendable work area
Publication Date: 2024.09.03 HITACHI CONSTRUCTION MACHINERY CO LTD
  • US12077945B2 patent drawing
  • US12077945B2 patent drawing
  • US12077945B2 patent drawing

AI summary

An operation assistance system for a work machine includes an operation assistance function and a work assistance function. Both of the operation assistance function and the work assistance function are switchable between enabled and disabled states. When the work assistance function is in an enabled state and when the work area is set outside of the stop area to surround the stop area, the operation assistance system sets the work area as the stop area such that the stop area is extended and overlaid on the work area, and automatically enables the operation assistance function when the operation assistance function is in a disabled state.