Fixed Sensor–UAV Detection for Underground Space Coverage Gaps
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Solution Overview
Problem
Existing detection methods for underground space infrastructure rely solely on fixed sensors, which suffer from limited coverage and high missed detection rates, making them inadequate for efficient structural health monitoring due to communication challenges and maintenance difficulties.
Innovation Solution
A detection method and system that combines fixed sensors with UAV movement detection, utilizing a virtual force-guided path planning algorithm and mobile/fixed star topology to enhance data collection and collision avoidance, integrating multi-sensor data fusion and adaptive optimal layout strategies to improve detection capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed sensors are deployed for underground space detection, then the detection system provides continuous monitoring capability, but the coverage area is limited and missed detection rate increases
Solution Approach 1:
The patent combines fixed sensor nodes with mobile UAV detectors into an integrated detection system. Fixed sensors provide continuous monitoring at specific locations while UAVs move through the underground space to cover areas beyond fixed sensor range, achieving comprehensive coverage through merging of static and mobile detection capabilities
Solution Approach 2:
The system transitions from purely static fixed sensor deployment to a dynamic hybrid architecture where UAVs can move autonomously or teleoperated to detect areas with communication failures. This dynamic component supplements the static fixed sensor network, allowing the system to adapt coverage to actual detection needs
2Stability of the object's composition
If fixed sensors are used for underground space monitoring, then the system provides stable monitoring points, but maintenance difficulty increases and communication challenges arise
Solution Approach 1:
UAVs serve as mobile intermediary detection platforms that can access hard-to-reach areas where fixed sensors are difficult to maintain. When communication failures occur in fixed sensor nodes, UAVs can perform detection tasks in those areas, effectively mediating the maintenance challenge by providing alternative detection capability without requiring physical access to the problematic fixed sensors
3Productivity
If UAV movement detection is added to fixed sensor system, then detection coverage and efficiency improve, but system complexity increases
Solution Approach 1:
The UAV detection system incorporates autonomous path planning and self-navigation capabilities, allowing the UAV to independently perform detection tasks without requiring complex external control systems. This self-service capability reduces the operational complexity despite adding mobile detection functionality to the fixed sensor network
Data Source
AI summary
The present disclosure relates to a detection method and system for an underground space by joint use of fixed sensors and unmanned aerial vehicle (UAV) movement detection. The detection system includes underground space sensor nodes and an underground space UAV. The underground space sensor nodes are configured to perform fixed monitoring based on an adaptive optimal layout strategy for an underground structural space. The underground space UAV is configured to calculate a first virtual force, and realize movement detection by means of a virtual force-guided path planning algorithm. The underground space UAV is configured to calculate the first virtual force based on the electronic telescopic anti-collision bars, a second virtual force based on a static perception probability and a third virtual force based on structural evolution knowledge, and realize a fixed node-guided UAV flight detection mode by means of the virtual force-guided path planning algorithm.