Pinniped Deterrent System Using Insulated Conductive Wires
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Solution Overview
Problem
Pinnipeds, such as California sea lions, cause significant damage to piers and boats and pose health hazards due to their territorial behavior and excrement, creating an unsafe work environment and sanitary concerns for humans.
Innovation Solution
A pinniped deterrent system using small-gauge, flexible stainless steel conductive wires installed along the pier perimeter, providing an uncomfortable electrical sensation to deter animals through negative reinforcement, while being safe for humans and designed with a track system and insulated channels to prevent electrical shock and tripping hazards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional deterrent methods (fences, barriers) are used to prevent pinniped access to piers, then physical protection is improved, but installation complexity and maintenance requirements increase
Solution Approach 1:
The patent replaces mechanical physical barriers (fences, nets) with an electrical field-based deterrent system. Conductive wires are embedded in non-conductive material and connected to an energizer that creates an uncomfortable electrical sensation when contacted by pinnipeds, eliminating the need for complex physical structures while maintaining effective protection.
2Reliability
If conductive wires are installed along pier perimeter to deter pinnipeds, then deterrent effectiveness is improved, but safety risks for humans increase
Solution Approach 1:
The patent introduces a non-conductive material as an intermediary medium that embeds and isolates the conductive wires. This non-conductive material acts as a safety barrier, preventing direct human contact with energized wires while still allowing pinnipeds to contact the conductive elements and receive the deterrent electrical sensation.
Solution Approach 2:
The patent applies different electrical properties to different parts of the system: conductive wires provide the deterrent electrical sensation when contacted by pinnipeds, while the non-conductive embedding material ensures human safety. This localized differentiation of electrical properties resolves the safety contradiction.
3Stability of the object's composition
If rigid track systems are used to mount deterrent wires, then structural stability is improved, but adaptability to pier movements and expansion decreases
Solution Approach 1:
The patent replaces rigid track mounting systems with a flexible non-conductive material that can accommodate pier movements, thermal expansion, and structural dynamics. The flexible material maintains structural stability while adapting to changes in the pier environment, eliminating the contradiction between rigidity and adaptability.
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
Effectively deters pinnipeds from accessing piers without harming them, reducing damage and health risks, and is humane and low-maintenance, with remote monitoring and control capabilities.
Implementation Method 1
small-gauge, flexible stainless steel conductive wires installed along the pier perimeter, providing an uncomfortable electrical sensation to deter animals
Data Source
AI summary
A system for deterring pinnipeds comprising a plurality of connected tracks interspersed with expansion joints, wherein the tracks and expansion joints are operatively coupled via connector keys that fit into a recessed channel running underneath the tracks and expansion joints, the tracks and expansion joints having electrically insulated recessed channels allowing for conductive wire to run throughout the tracks and expansion joints, the expansion joints further comprising two wells allowing for excess wire to be coiled and housed, acting as a spring and allowing for expansion, and the wire is connected to a power source.