Work Machine Body Coordinate Setting Without Vehicle Rotation

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Solution Overview

Problem

Existing methods for setting the vehicle body coordinate system in work machines require rotating the first vehicle body, leading to measurement errors and increased working hours, necessitating a more precise and efficient method without rotating the first vehicle body.

Innovation Solution

Utilizing an attitude sensor to detect the attitude of the first vehicle body and a position measurement device to measure the position of a target part, allowing the vehicle body coordinate system to be set based on the detected attitude without rotating the first vehicle body.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the first vehicle body is rotated to set the vehicle body coordinate system, then the coordinate system can be established, but measurement errors occur and working hours increase

Engineering Contradiction:

Improvecoordinate system setting precisionVSAvoidworking hours

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent replaces the mechanical rotation method with an attitude sensor-based detection system. The attitude sensor detects the attitude of the first vehicle body without requiring physical rotation, thereby eliminating measurement errors from rotation and reducing working hours while maintaining coordinate system setting precision.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Measurement precision

If the first vehicle body is rotated to set the vehicle body coordinate system, then the coordinate system can be established, but a large work area is required

Engineering Contradiction:

Improvecoordinate system setting precisionVSAvoidwork area

Core Design Contradiction:

Measurement precisionVSArea of stationary object

Solution Approach 1:

The patent substitutes the mechanical rotation process with an attitude detection system using sensors. This eliminates the need for large work areas required for rotation while achieving the same coordinate system establishment goal with high precision.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Measurement precision

If the first vehicle body is rotated to set the vehicle body coordinate system, then the coordinate system can be established, but the number of working hours increases

Engineering Contradiction:

Improvecoordinate system setting precisionVSAvoidoperational efficiency

Core Design Contradiction:

Measurement precisionVSProductivity

Solution Approach 1:

The patent replaces time-consuming mechanical rotation operations with instantaneous attitude sensor detection. This significantly reduces the number of working hours required for coordinate system setting while improving operational efficiency and maintaining measurement precision.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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

Enables precise setting of the vehicle body coordinate system without rotating the first vehicle body, reducing measurement errors and working hours, and improving operational efficiency.

Implementation Method 1

an attitude sensor that detects an attitude of the first vehicle body

Methodology Applied

Scientific EffectAttitude detection:

Implementation Method 2

a position measurement device that measures a position of a first target part included in the work implement

Methodology Applied

Scientific EffectPosition measurement:

Data Source

PatentUS20260009208A1System and method for setting vehicle body coordinate system in work machine

Publication Date: 2026.01.08 KOMATSU LTD

AI summary

A system includes an attitude sensor, a position measurement device, and a controller. The attitude sensor detects an attitude of a first vehicle body. The position measurement device measures a position of a first target part included in a work implement. The controller acquires, from the attitude sensor, the attitude of the first vehicle body while the first body part is stationary with respect to a second vehicle body. The controller sets a vehicle body coordinate system based on the attitude of the first vehicle body and the position of the first target part.