UAV Power Line Inspection via Inductive Energy Harvesting
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Solution Overview
Problem
Current methods for inspecting aerial power line components are hazardous, expensive, and limited by the need for human intervention and drones with short flight times, which also require a human operator to be in line-of-sight.
Innovation Solution
An unmanned aerial vehicle (UAV) equipped with a rotor system, motivation wheels, a battery that can be charged via an inductive coil connected to the power transmission line, and monitoring tools, allowing it to autonomously inspect and move along power lines while harvesting electricity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional human inspection methods are used, then inspection can be performed, but it is dangerous, expensive, and requires power line deactivation
Solution Approach 1:
The inspection system performs self-powered operation by harvesting energy from the power line itself through inductive coupling. The UAV's power system includes coils that wirelessly transfer energy from the high-voltage conductor, enabling the vehicle to operate autonomously without external power supply or human intervention, thus eliminating human risk while maintaining inspection capability
Solution Approach 2:
The patent replaces mechanical contact-based inspection methods with an electromagnetic field-based energy transfer system. Instead of physical connection to power lines for power supply, the system uses inductive coupling through coils to wirelessly harvest energy, eliminating the need for human operators to physically approach or contact the power lines
2Duration of action of moving object
If small drones are used for inspection, then flight time is extended, but they require human operator within line-of-sight
Solution Approach 1:
The UAV is equipped with autonomous navigation and inspection capabilities, harvesting power from the line to sustain extended operations without human intervention. The vehicle can independently navigate along the power line, perform inspections, and recharge continuously, eliminating the need for human operators to remain within line-of-sight while maintaining extended flight duration
Solution Approach 2:
The inductive power harvesting system enables continuous operation by constantly recharging the UAV's battery as it moves along the power line. The energy transfer occurs continuously through the coils, allowing the vehicle to maintain extended flight time and autonomous operation without interruption or human intervention
3Extent of automation
If drones with limited flight time are used, then autonomous operation is possible, but inspection coverage is reduced
Solution Approach 1:
The continuous inductive power harvesting from the power line enables the UAV to extend its operational duration beyond typical battery limits. As the vehicle moves along the line, the coils continuously transfer energy to recharge the battery, allowing for extended inspection coverage across multiple power line sections without returning to base for recharging
Solution Approach 2:
The power harvesting coils serve dual functions: they harvest electrical energy to power the UAV systems and simultaneously can be used for communication or sensing operations. This multi-functionality increases inspection productivity by enabling the vehicle to perform multiple tasks during extended autonomous operations along the power line
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 safe, efficient, and cost-effective inspection of power transmission lines by allowing the UAV to operate autonomously, extend its flight time through energy harvesting, and reduce human risk and operational costs.
Implementation Method 1
an inductive coil carried by the body and in electric connection with the battery, wherein the inductive coil is configured to harvest electricity from the aerial power transmission line system and charge the battery
Data Source
AI summary
An exemplary unmanned aerial vehicle (UAV) mountable to a conductor of an aerial power transmission line system includes a body having a rotor system, a motivation system attached to the body to motivate the UAV along the conductor, a battery carried by the body and electrically connected to at least one of the rotor system and the motivation system, a monitoring tool mounted with the body and an inductive coil carried by the body and in electric connection with the battery, wherein the inductive coil is configured to harvest electricity from the aerial power transmission line system and charge the battery.