Wind Turbine Blade Monitoring Posted in: Displacement Measurement – Tags:

Displacement Measurement for Wind Turbine Blade Monitoring


Laser Rangefinders Measure Wind Displacement from Turbine Blades

Although sometimes considered beautiful and serene from a distance, wind turbines are tremendous mechanical marvels. The towers stand over 100 meters high and a single blade may be upwards of 40 meters in length. When the turbine blades rotate, the tips of the blades move as fast as 90 m/sec (200 mi/hr).

Turbine engineers often want to remotely monitor components and gain data on their wind turbine blade monitoring  from a distance. The monitoring of blade tip displacement is an important metric and it requires laser sensors that allows measurements away from the danger of the moving blades and one fast enough to “see” a fast moving blade tip. The Acuity AR2500 laser sensor supports measurement frequencies of 30 KHz and can measure a distance reading every 3 mm for the blade tip moving at 90 m/sec. Displacements of the turbine blade might be as much as several meters in strong winds. Using triangulation or time-of-flight principles, laser sensors can measure the distance of a surface from the laser source. Detections can be used for bolt loosening, ice build-up, misalignment, or potential material loss on the blade.

Related Products

AR2000 Laser Distance Meter

The AR2000 is a highly accurate laser measurement sensor that is designed to work well outdoors, in bright lights, and on hot targets. With the ability to take accurate measurements (± 1 mm) from distances up to 500 meters away, and a measurement frequency of up to 100 Hz, it is the perfect laser for a wide range of applications.

AR2500 Laser Sensor

AR2500 laser sensors are Acuity Laser’s ultra-compact rangefinder models. This eye-safe rangefinder has a measurement frequency of up to 30 kHz and can measure the distances to natural targets up to 30 meters away or to retroreflective targets 260 meters away. This laser is best for applications that demand high sampling rates.