A system for measuring the inclination angle of wind power tower based on three-dimensional Hall sensor

Abstract

A system for measuring the inclination of a wind power tower based on a three-dimensional Hall sensor, including an inclination measuring device and an embedded host, the inclination measuring device is installed in the tower, wherein the inclination measuring device includes a three-dimensional Hall sensor, a microprocessor, Magnetically isolated CAN transceiver, system basic chip, and swing rod mechanism. Magnets are installed on the swing rod mechanism. The three-dimensional Hall sensor is located above the magnet. The non-contact magnetic field space is cross-linked. It is used to adjust the appropriate sensitivity and damping characteristics. The microprocessor reads the internal data of the three-dimensional Hall sensor and performs algorithm processing to complete the tower inclination data measurement. The present invention completes the equiangular transmission of the external inclination signal of the system through the unique compound pendulum design of the three-dimensional Hall sensor and the pendulum mechanism, with high data accuracy and high repeatability.

Description

technical field [0001] The invention belongs to the technical field of wind turbine tower measurement, and in particular relates to a system for measuring the inclination angle of a wind turbine tower based on a three-dimensional Hall sensor. Background technique [0002] After the wind power tower is installed, due to foundation settlement, deformation of structural parts, strong wind and other reasons, the tower may tilt or even fall, causing serious economic losses. Since wind power was put into commercial use, tower monitoring has always been a problem. In the past, the tower inclination detection used acceleration sensors, the core of which was a micro-mechanical chip, which had high sensitivity, but there were two fatal shortcomings: first, due to the long-term and multiple measurements of the system, the measurement micro-chip had obvious physical deformation. Therefore, the repeatability of the measured value relative to the absolute physical position is not good. A...

AI Technical Summary

Problems solved by technology

In the past, the tower inclination detection used acceleration sensors, the core of which was a micro-mechanical chip, which had high sensitivity, but there were two fatal shortcomings: first, due to the long-term and multiple measurements of the system, the measurement micro-chip had obvious physical deformation. Therefore, the repeatability of the measured value relative to the absolute physical position is not good. Although the sensitivity is high, due to the inherent characteristics of the principle, the cumulative absolute error is getting larger and larger, and finally it can only be a reference relative measurement data; The forced vibration caused by the natural swing of the tube, the swing center remains unchanged, and the non-essential tower tube deformation will also act on the detection system many times, resulting in unnecessary cumulative errors and a large amount of practically useless data

Finally, the price of the acceleration sensor is quite expensive, which increases the detection cost

Images