Polar Coordinate Display for Excavator Tilt Monitoring
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional display systems for working machines, such as excavators, often obscure the bubble-tube level, making it difficult for operators to accurately recognize the tilt and direction of the machine, thereby compromising workability.
Innovation Solution
A display system that includes a tilt sensor to detect pitch and roll angles, a calculation unit to convert these into polar coordinates, and a display unit showing a polar coordinate display with a marked line indicating a preset tilt magnitude, allowing for adjustable display settings like magnification and color changes to enhance visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a bubble-tube level is disposed to the operator's seat, then the operator can recognize the tilting state of the working machine, but the bubble-tube level may be hidden by display devices arranged for the operator's seat
Solution Approach 1:
The patent creates a virtual copy of the bubble-tube level by displaying tilt information on a monitor screen. The display processing unit generates a monitor-displayed level that replicates the functionality of the physical bubble-tube level, allowing operators to view tilt information on the screen without being obscured by other display devices arranged in the cabin.
2Measurement precision
If display content indicating tilt and direction is fixed, then the display system is simple, but it may be difficult to recognize the tilt and direction with high accuracy
Solution Approach 1:
The patent implements dynamic display content that adapts to operator needs. The setting processing unit allows operators to customize display parameters including marked line magnitude, display magnification, and color schemes. This dynamic adjustability enables high-accuracy tilt and direction recognition without requiring a complex fixed multi-display system.
3Loss of information
If various kinds of display devices are arranged for the operator's seat, then information availability is improved, but the bubble-tube level may be hidden by such display devices
Solution Approach 1:
The patent transitions the tilt information display from the physical three-dimensional space (where the bubble-tube level could be physically blocked) to a two-dimensional digital display space on the monitor. This dimensional change allows tilt information to be displayed alongside other information without physical obstruction, as digital elements can be layered and positioned on the screen without blocking each other in physical space.
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 system enables operators to accurately recognize the tilt and direction of the working machine, improving workability by providing customizable and intuitive visual feedback.
Implementation Method 1
a tilt sensor that detects a pitch angle and a roll angle of a working machine
Data Source
AI summary
A display system of a working machine includes: a tilt sensor that detects a pitch angle and a roll angle of a working machine; a calculation unit that calculates a tilting position on polar coordinates that indicates a magnitude and a direction of tilt of the working machine based on the detected pitch angle and roll angle; a display unit that displays various kinds of information; a display processing unit that displays, on a predetermined region on a display screen of the display unit, a monitor-displayed level that performs a polar coordinate display of the tilting position and a marked line indicating a preset magnitude of tilt; and a setting processing unit that performs a setting to change display content of the monitor-displayed level.