Autonomous Work Machine Boundary Wire Detection for Variable Wire Height
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Solution Overview
Problem
Conventional autonomous working machines face challenges in detecting and navigating around area wires installed both in the ground and above the ground, as the magnetic field detection is affected by the wire's position, leading to potential contact issues and inefficiencies in defining the work area.
Innovation Solution
An autonomous working machine equipped with magnetic field detection means, storage for reference values, and a control system that allows selection of reference values based on the area wire's installation height, enabling precise control of the traveling route to adapt to both ground and aerial installations of the area wire.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If an area wire is installed in the air, then the installation time and labor are reduced, but the magnetic field detection precision deteriorates due to increased distance between the wire and detection part
Solution Approach 1:
The patent changes the detection parameters by storing multiple reference values corresponding to different wire installation heights (ground level vs. aerial). The system selects and uses the appropriate reference value based on the actual installation condition, thereby maintaining detection precision regardless of whether the wire is installed in the ground or in the air.
2Ease of manufacture
If an area wire is installed in the air, then the installation complexity is reduced, but the reliability of autonomous navigation deteriorates due to potential contact between the working machine and the wire
Solution Approach 1:
The system performs preliminary detection of the area wire's magnetic field before the autonomous working machine approaches. By detecting the magnetic field in advance and identifying the wire's position and height, the control unit can pre-calculate a safe traveling route that maintains appropriate clearance, preventing contact between the machine and the aerial wire.
Solution Approach 2:
The magnetic field detection part continuously monitors the magnetic field environment, providing real-time feedback to the control unit. This feedback enables dynamic adjustment of the traveling route to maintain safe distances from aerial area wires, ensuring reliable autonomous navigation.
3Device complexity
If a single reference value is used for magnetic field detection, then the device complexity is reduced, but the adaptability to different wire installation conditions deteriorates
Solution Approach 1:
The detection system is designed with multi-functionality by incorporating multiple reference values for different wire installation scenarios (ground-level and aerial). This universal approach allows the same detection system to adapt to various installation conditions without requiring separate detection systems, balancing complexity and versatility.
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 effective detection and navigation around area wires in various installations, ensuring safe and efficient operation within the defined work area by adjusting the traveling route based on the selected reference values, thereby preventing contact and optimizing work area definition.
Implementation Method 1
magnetic field detection means for detecting a magnetic field generated by energization to an area wire
Data Source
AI summary
The autonomous working machine including: a magnetic field detection part for detecting a magnetic field generated by the energization to the area wire; a storage part for storing a reference value of the magnetic field detection by the magnetic field detection part; a control part for controlling a traveling route based on the reference value stored in the storage part and the magnetic field detected by the magnetic field detection means; and an input part for receiving a selection of a first reference value used in a case where the area wire is installed at a first distance from the ground or a second reference value used in a case where the area wire is installed at a second distance from the ground, wherein the control part controls a traveling route based on the first reference value or the second reference value selected by the input part.