Rotor blades collision warning system for wind energy system, has distance sensors to measure distance of blades to point of system, and circuit to evaluate distance data and to release collision warning during reduced distance

摘要

The system has distance sensors (7a, 7b) arranged at a wind energy system (1) for contactless measurement of distance of rotor blades (5) to a preset point of the wind energy system, which consists of a rotor (4) arranged at a tower (2). An evaluation electronic circuit is provided for evaluating the distance data measured by the sensors. The evaluation circuit releases a collision warning during a reduced critical distance.