Wireless Charging Device Magnetic Field Orientation
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Solution Overview
Problem
Existing wireless charging technologies lack efficient methods to orient devices effectively towards magnetic fields for optimal power transmission, leading to suboptimal charging efficiency.
Innovation Solution
A device equipped with a propulsion unit, steering unit, power unit, and magnetic sensor, where a processor uses time-varying magnetic field signals to navigate and orient the device towards electrical power transmission lines, enabling efficient charging using electromagnetic fields.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wireless charging devices use fixed orientation methods, then device structure is simple, but charging efficiency is suboptimal
Solution Approach 1:
The patent implements dynamic orientation adjustment by using a magnetometer to detect magnetic field direction and a steering unit to actively orient the conductor toward the power transmission line. This dynamic system adapts the device orientation in real-time to maximize charging efficiency, resolving the contradiction between simple structure and high productivity.
Solution Approach 2:
The system employs feedback through magnetic field sensing and processing, where the magnetometer continuously monitors the magnetic field, the processor determines optimal orientation, and the steering unit adjusts the conductor position accordingly. This closed-loop feedback mechanism enables efficient charging while maintaining manageable device complexity through automated control.
2Productivity
If the device orients closer to power transmission lines, then charging efficiency increases, but safety risks increase
Solution Approach 1:
The feedback mechanism continuously monitors magnetic field strength and adjusts orientation and distance accordingly. By detecting changes in magnetic field characteristics, the system can optimize charging efficiency while automatically maintaining safe distances from power transmission lines, preventing harmful exposure.
Solution Approach 2:
The dynamic orientation and positioning system allows the device to adapt its distance and angle relative to power transmission lines in real-time. This enables the system to operate at optimal charging distances while automatically adjusting to maintain safety margins, resolving the contradiction between proximity for efficiency and distance for safety.
3Measurement precision
If the device uses magnetic field detection for navigation, then orientation precision improves, but device complexity increases
Solution Approach 1:
The magnetometer serves as an intermediary sensing element that detects magnetic field characteristics without requiring complex direct measurement systems. By using the Earth's magnetic field and power line magnetic fields as natural references, the system achieves precise orientation through relatively simple magnetic sensing and processing.
Solution Approach 2:
The magnetic field detection system serves multiple functions: it provides orientation information, determines distance from power lines, and enables navigation. This multi-functionality reduces the need for separate specialized sensors and systems, achieving high measurement precision while limiting the increase in overall device complexity.
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
The solution allows for precise navigation and orientation of the device towards power transmission lines, maximizing current induction and charging efficiency while maintaining a safe distance, thus enhancing the overall charging process.
Implementation Method 1
a first magnetic sensor configured to determine a vector of one or more magnetic fields
Implementation Method 2
A magnetic field can induce a current into a conductor. The conductor can be connected to a power source to charge the power source.
Implementation Method 3
a charging unit configured to use an electric field to provide electrical power to the power unit
Data Source
AI summary
A device includes a propulsion unit configured to move the device and a steering unit configured to control the direction of the device. The device also includes a power unit configured to provide power to the propulsion unit and a charging unit configured to use an electric field to provide electrical power to the power unit. The device further includes a first magnetic sensor configured to determine a vector of one or more magnetic fields and a processor communicatively coupled to the propulsion unit, the steering unit, the power unit, and the magnetic sensor. The processor is configured to receive, from the magnetic sensor, a time-varying signal indicative of a magnetic field and determine, based on the time-varying signal, that the magnetic field is associated with an electrical power transmission line. The processor is further configured to cause the steering unit to direct the device toward the electrical power transmission line.