一种基于电磁感应原理的风向编码方法

霍尔元件在与磁体接近时输出端会产生一个高电平,离开磁体时输出端为低电平。基于这种电磁感应原理,提出了一种风向编码方法。该方法设为三层立体编码,霍尔元件固定在编码器的定位盘上,磁钢体固定在转动盘上。转动盘上的磁钢体靠近霍尔元件时,霍尔元件输出高电平,磁钢体离开霍尔元件,则霍尔元件输出低电平。根据各个霍尔元件输出的高低电平组合编码,第一编码层可在45°范围内实现5°的分辨率,第二编码层可在180°范围内实现45°的分辨率,第三编码层可在360°范围内实现180°的分辨率。三个编码层相结合,便可在360°范围内实现5°的分辨率。

A method of wind direction coding based on the principle of electromagnetic induction

When the Hall element close to the magnet,its output will have a high level,and when the Hall element leaves the magnet,its output is low.Based on this principle of electromagnetic induction,this paper presents a method of wind direction coding.The encoding method is set to three levels.Hall element is fixed to the positioning device of encoder,the magnetic body is fixed to the rotating device of encoder.When the magnet body on rotating disk is close to the Hall element,the Hall element output is high level,and when magnetic body leaves the Hall element,the Hall element output is low level.According to these high-low state of Hall element output,we can encode the direction.The first coding layer can be used to distinguish 5°in the 45° range,the second coding layer can be used to distinguish 45° in the 180° range,and the third coding layer can be used to distinguish 180° in the 360° range.The three coding layers work together,we can distinguish 5° in the 360° range.