Tethered UAV 3D Modeling for Cell Tower Safety
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Solution Overview
Problem
The existing methods for maintaining and surveying cell towers are hazardous, costly, and time-consuming due to the need for physical climbs, and current UAV solutions face challenges in stabilization and accuracy for 3D modeling and site surveys.
Innovation Solution
The use of unmanned aerial vehicles (UAVs) equipped with robotic arms and tethered configurations for performing operations on cell towers, combined with 3D modeling and virtual site surveys to reduce the need for physical climbs and enhance safety and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If tower climbers physically climb cell towers to perform maintenance and surveys, then direct access and hands-on operations are achieved, but safety risks and operational costs increase significantly
Solution Approach 1:
The patent creates a virtual copy (3D model) of the cell tower that replicates its physical structure, allowing remote inspection and planning operations. This virtual replica enables thorough examination of tower components without requiring physical presence, thereby eliminating safety risks while maintaining operational effectiveness.
Solution Approach 2:
The patent replaces the mechanical system of physical tower climbing with an automated aerial vehicle system equipped with cameras and sensors. The UAV flies around the tower to capture data, substituting human mechanical climbing with automated aerial navigation and data collection mechanisms.
2Reliability
If unmanned aerial vehicles are used for cell tower surveys, then safety risks are reduced, but stabilization and measurement accuracy deteriorate
Solution Approach 1:
The patent introduces a tether as an intermediary element that physically connects the UAV to the ground control system. This tether serves multiple functions: providing physical stabilization to reduce flight vibrations, transmitting power and data signals, and enabling real-time control adjustments to maintain measurement precision during aerial surveys.
Solution Approach 2:
The patent implements a feedback control system where the tether transmits real-time data about UAV position, orientation, and sensor measurements to ground-based processing systems. The ground system processes this feedback and adjusts control signals to maintain optimal positioning and measurement accuracy, compensating for any drift or instability.
3Adaptability or versatility
If robotic arms are added to UAVs for performing operations on cell towers, then operational capability is enhanced, but system complexity and counterbalancing requirements increase
Solution Approach 1:
The patent employs preliminary action by using the tether to pre-stabilize the UAV before robotic arm operations begin. The tether system is configured to provide counterbalancing support in advance, allowing the robotic arms to perform manipulation tasks without requiring complex active counterbalancing mechanisms during operation.
Solution Approach 2:
The patent makes the tether system universal by designing it to serve multiple functions simultaneously: providing mechanical stabilization, transmitting electrical power, communicating data signals, and enabling physical restraint of the UAV. This multi-functionality reduces the need for separate specialized systems, thereby lowering overall system complexity despite the addition of robotic arms.
4Stability of the object's composition
If tethered UAV configurations are used, then stabilization and control are improved, but flight freedom and mobility are constrained
Solution Approach 1:
The patent applies dynamics by designing the tether system with controlled flexibility and adjustable tension rather than rigid fixation. The tether allows dynamic movement within certain parameters, enabling the UAV to adapt its position and orientation for different survey angles and operational requirements while maintaining sufficient stabilization for accurate measurements.
Data Source
AI summary
A virtual site survey method at a cell site utilizing three-dimensional (3D) models for remote performance includes obtaining a plurality of photographs of a cell site comprising one or more of a cell tower and one or more buildings and interiors thereof; subsequent to the obtaining, processing the plurality of photographs to define a three dimensional (3D) model of the cell site based on one or more objects of interest in the plurality of photographs; and remotely performing a site survey of the cell site utilizing a Graphical User Interface (GUI) of the 3D model to collect and obtain information about the cell site, the cell tower, the one or more buildings, and the interiors thereof.