Optical Bird Detection for Selective Wind Turbine Curtailment

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Solution Overview

Problem

Existing wind farm mitigation methods cannot specifically identify birds or bats, leading to unnecessary curtailment of wind turbine operations, resulting in energy and revenue loss, and have high capital costs.

Innovation Solution

An automated system using optical imaging sensors and a controller to detect and identify protected species like Golden Eagles or Bald Eagles, curtail operations, and deploy deterrents when necessary, with sensors providing 360-degree coverage and overlapping fields of view.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If existing mitigation methods curtail wind turbine operation when birds or bats are detected, then risk to protected species is reduced, but energy loss and revenue loss increase due to unnecessary curtailment

Engineering Contradiction:

Improverisk mitigation to protected speciesVSAvoidenergy loss from curtailment

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The patent replaces generic motion detection (mechanical/radar systems) with optical imaging technology that captures visual information about airborne animals. Optical sensors provide species-specific identification capabilities through image analysis, allowing differentiation between protected and non-protected species, thereby reducing unnecessary curtailment while maintaining protection for at-risk species.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces an image analysis component as an intermediary between detection and curtailment decision-making. This intermediary analyzes optical images to identify species characteristics, providing informed decision support that prevents premature or unnecessary curtailment actions while ensuring protection when protected species are detected.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If existing mitigation methods curtail wind turbine operation to protect birds or bats, then risk to protected species is reduced, but capital cost increases

Engineering Contradiction:

Improverisk mitigation to protected speciesVSAvoidcapital cost of mitigation system

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent employs optical imaging sensors (cameras) which are relatively low-cost components compared to radar or acoustic systems. These sensors provide sufficient detection and identification capability for mitigation purposes at a fraction of the cost of alternative technologies, reducing capital expenditure while maintaining effective protection.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The patent substitutes expensive radar or acoustic detection systems with optical imaging technology. Optical sensors offer comparable or superior species identification capabilities at lower capital cost, eliminating the need for complex mechanical detection infrastructure while achieving the same or better mitigation reliability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Loss of energy

If optical imaging sensors are used to identify protected species, then unnecessary curtailment is reduced, but detection precision requirements increase

Engineering Contradiction:

Improveenergy loss from curtailmentVSAvoidspecies identification accuracy

Core Design Contradiction:

Loss of energyVSMeasurement precision

Solution Approach 1:

The patent implements preliminary action by curtailing turbine operation proactively when protected species are detected, preventing collision risk before it materializes. The system calculates safe distances based on species-specific flight characteristics and turbine rotation speeds, enabling early intervention that protects species while minimizing curtailment duration and energy loss.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent employs feedback mechanisms where detection and identification results continuously inform curtailment decisions. The system monitors airborne animal presence, identifies species in real-time, and dynamically adjusts turbine operation accordingly. This closed-loop feedback ensures curtailment occurs only when protected species are present and at risk, eliminating unnecessary energy loss while maintaining high identification accuracy standards.

Inventive Principle:

Principle #23Feedback

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

Reduces unnecessary turbine curtailment, minimizes energy loss, and lowers capital costs by accurately identifying protected species and deploying deterrents, thereby enhancing risk mitigation.

Implementation Method 1

employ optical imaging technology to mitigate the risk posed by wind turbines to airborne animals

Methodology Applied

Scientific EffectOptical imaging: Photography

Data Source

PatentUS12446570B2Bird or bat detection and identification for wind turbine risk mitigation

Publication Date: 2025.10.21 IDENTIFLIGHT INTERNATIONAL LLC

AI summary

An automated system for mitigating risk from a wind turbine includes a plurality of optical imaging sensors. A controller receives and analyzes images from the optical imaging sensors to automatically send a signal to curtail operation of the wind turbine to a predetermined risk mitigating level when the controller determines from images received from the optical imaging sensors that an airborne animal is at risk from the wind turbine.