Sensing device for measuring distance from wind turbine blades to tower barrel

Abstract

The invention discloses a sensing device for measuring a distance from wind turbine blades to a tower barrel. The sensing device comprises a master control module, not less than three single-line distance measuring modules, a power supply interface and a data interface, wherein the master control module is used for controlling the single-line distance measuring modules and realizing a special algorithm; the single-line distance measuring modules are used for performing laser distance measuring; each module only sends and receives a light beam; the power supply interface provides power for thewhole machine; and the data interface is a data output interface of clearance measured results. Compared with other clearance radars or clearance monitoring devices, the sensing device has multiple distance sensing light beams, and each light beam has certain angle relationship and can be independently measured; the advantages of multiple light beams are utilized, and methods such as relativity detection can be adopted to efficiently detect distances of the wind turbine blades and relive rain and fog interferences, extract effective blade data and reduce a false-alarm rate.

Description

technical field [0001] The invention belongs to the field of measurement, in particular to the technical field of fault monitoring of wind power generators, in particular to a sensor device for measuring the distance from a blade of a wind power generator to a tower. Background technique [0002] combine figure 1 , the wind turbine tower clearance is the shortest distance between the tip of the blade and the tower wall at the height of the blade tip. With the development of wind turbine technology and the improvement of energy efficiency requirements, wind turbine blades are getting longer and softer. , and the wind turbine has the risk of tower sweeping under certain working conditions or a tower sweeping accident has occurred. After the tower sweeping occurs, the blades may be replaced, or the entire unit may be scrapped, which will bring huge economic and property losses. [0003] The headroom monitoring radar (hereinafter referred to as the headroom radar) is a radar th...

AI Technical Summary

Problems solved by technology

[0016] Aiming at the problems existing in the background technology, the present invention proposes a sensor device for measuring the distance from the wind turbine blades to the tower to solve the problem of false alarms or false alarms caused by the interference of the lidar by rain and fog, as well as the video headroom equipment algorithm Low efficiency, blurred images lead to recognition errors, high cost and other problems, and also solve the problems of low detection probability and poor ranging accuracy when millimeter-wave radar is used as a clearance radar

Images