A Fiber Bragg Grating-Based Anemometer

Area of Science:

• Optoelectronics
• Sensor Technology
• Renewable Energy Systems

Background:

• Accurate wind measurement is crucial for optimizing wind energy generation.
• Traditional anemometers can be complex or lack durability in harsh environments.

Purpose of the Study:

• To develop and demonstrate a novel fiber optic anemometer capable of simultaneously measuring wind speed and direction.
• To assess the performance and potential applications of the proposed fiber anemometer.

Main Methods:

• Utilizing two pairs of fiber gratings for simultaneous wind speed and direction detection.
• Employing a rotating disc mechanism with spatially separated gratings (90° apart) to determine wind direction.
• Measuring spectrum shift between a sensing and matched grating to calculate wind speed.

Main Results:

• Experimental demonstration of a fiber anemometer with simultaneous wind speed and direction measurement capabilities.
• Achieved measurement errors of less than 1% for both wind speed and wind direction.
• The device exhibits a simple and durable structural design.

Conclusions:

• The novel fiber anemometer offers accurate and simultaneous wind measurement.
• Its robust design and high precision make it suitable for integration into wind-powered electricity generators.
• This technology presents a promising advancement for renewable energy monitoring.