Work Machine Actuator State Detection for Display Control

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Solution Overview

Problem

Existing work machine systems face issues with unnecessary automatic switching of display contents on the operator's screen, hindering the operator's ability to check information and potentially leading to forgotten manual overrides of automatic image display control functions.

Innovation Solution

A work machine configuration with a state determination unit that distinguishes between standby and suspended states of the actuator, allowing automatic image output only when the actuator is in a standby state and stopping it when in a suspended state, thereby preventing unnecessary automatic switching.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the automatic image output function is activated to display monitoring images when obstacles are detected, then the operator can quickly check dangerous situations, but the operator's ability to check information on the display device without distraction is reduced

Engineering Contradiction:
Improvesafety monitoring capabilityVSAvoidinformation checking efficiency
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The system dynamically adjusts the automatic image output function based on the actuator state. When the actuator is in standby state, automatic image output is enabled to monitor obstacles. When the actuator is in suspended state, automatic image output is disabled to allow the operator to check information without distraction. This dynamic adjustment resolves the contradiction by making the system adaptive to different operational contexts.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes the parameter of automatic image output execution based on the actuator state parameter. By detecting whether the actuator is in standby or suspended state, the system modifies whether automatic image output is executed, thereby balancing safety monitoring needs with information checking efficiency.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If the automatic image output is continuously executed to monitor obstacles, then obstacle detection capability is improved, but unnecessary automatic switching occurs when workers perform preparatory work, causing distraction

Engineering Contradiction:
Improveobstacle detection capabilityVSAvoidunnecessary automatic switching distraction
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The system uses dynamic state detection of the actuator to control automatic image output. By continuously monitoring the actuator state and adjusting automatic image output execution accordingly, the system eliminates unnecessary automatic switching during preparatory work while maintaining obstacle detection capability during active operation.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The state determination unit provides feedback about the actuator state to the display control unit, which then adjusts automatic image output execution. This feedback mechanism ensures that automatic image output is only executed when appropriate (during standby state), preventing unnecessary switching and distraction caused by workers performing preparatory work.

Inventive Principle:
Principle #23Feedback

3Ease of operation

If the automatic control function of image display is stopped to avoid hindrance during preparatory work, then information checking is improved, but the operator may forget to release the stop manipulation after checking

Engineering Contradiction:
Improveinformation checking efficiencyVSAvoidautomatic control function availability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The system automatically manages the automatic image output function based on actuator state changes. When the actuator transitions from suspended state back to standby state, the system automatically re-enables automatic image output without requiring manual intervention from the operator. This self-service mechanism eliminates the risk of forgetting to release the stop manipulation.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system dynamically responds to actuator state changes by automatically adjusting automatic image output execution. This dynamic behavior ensures that the automatic control function is always available when needed (during standby state) while automatically pausing during preparatory work, without requiring manual operator intervention.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS12043527B2Work machine and video display control method for work machine
Publication Date: 2024.07.23 KOBELCO CONSTR MASCH CO LTD
  • US12043527B2 patent drawing
  • US12043527B2 patent drawing
  • US12043527B2 patent drawing

AI summary

An obstacle detection device detects an obstacle existing in one or more monitoring areas that are set to correspond to a movable part. A state determination unit determines whether a state of the actuator is a standby state or a suspended state under circumstances where the actuator is at a stop. On determination that the state of the actuator is the standby state, a display control unit executes automatic image output that is processing for causing a display device to display a monitoring image corresponding to a monitoring area in which the obstacle is detected out of the one or more monitoring areas. On determination that the state of the actuator is the suspended state, the display control unit stops the execution of the automatic image output.