Magnetic Stripe Border Detection for Moving Devices
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Solution Overview
Problem
Conventional moving devices, such as mowers, lose the ability to determine their border when the continuous conductive wire generating the magnetic field is cut or experiences power failure, causing them to potentially move outside the intended range.
Innovation Solution
The implementation of a moving device with first and second magnetic stripes along the outer and inner borders of a moving region, respectively, which generate distinct magnetic fields, allowing the device to determine its motion mode and maintain border recognition even if the magnetic stripes are damaged or power is lost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a continuous conductive wire is used to generate a magnetic field for border detection, then the moving device can determine the border of the closed range, but the system becomes vulnerable to power failure when the wire is cut
Solution Approach 1:
The patent divides the border detection system into two independent parts: magnetic stripes arranged along the border (passive, no power needed) and a magnetic sensing module on the moving device (active sensing). This segmentation eliminates the vulnerability of continuous wire systems while maintaining border detection capability.
Solution Approach 2:
The patent replaces the electrical/conductive system (continuous wire requiring power) with a magnetic field-based system using magnetic stripes and magnetic sensing. This substitution eliminates the power supply vulnerability while achieving the same border detection function.
2Reliability
If magnetic stripes are used instead of conductive wires, then the system becomes immune to power failure, but the device complexity increases due to additional magnetic components
Solution Approach 1:
The patent uses magnetic stripes that are simple, inexpensive, and require no power supply. These stripes can be easily replaced if damaged, and their passive nature makes them highly reliable for border definition without adding complex power infrastructure.
Solution Approach 2:
The patent introduces magnetic field lines as an intermediary between the magnetic stripes (border definition) and the magnetic sensing module (detection). This intermediary enables communication and detection without direct electrical connection, simplifying the overall system architecture.
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 the moving device to continue operating within the defined region by determining motion modes based on sensed magnetic fields, ensuring efficient path navigation and border adherence even when the magnetic stripes are accidentally damaged or power is compromised.
Implementation Method 1
The magnetic sensing module is disposed on the body for sensing the first magnetic field and the second magnetic field
Data Source
AI summary
A moving device and a moving control method thereof are provided. The moving control method comprises the following steps. Firstly, a first magnetic field and a second magnetic field are sensed by a moving device within a moving region. A first magnetic stripe generating the first magnetic field is arranged along an outer border of the moving region, and a second magnetic stripe generating the second magnetic field is arranged along an inner border of the moving region. Then, a motion mode is determined and a corresponding motion is performed by the moving device according to an order in which the first magnetic field and the second magnetic field are sensed.