Опубликовано 2013-05-07 17:15:50 автором Ruslan
Connecting the Hall sensor to the microcontroller
Hall Sensor - is a magnetic field sensor . Its operating principle is the effect Hall : If the magnetic field put the plate and current to pass through it , the electrons in the plate will be rejected ( Lawrence force ) is perpendicular to the current direction . From this it follows that one edge of the plate will be more electrons than the other s . This means that there is a potential difference (voltage) , this voltage can be enhanced and izmerit.Datchiki Hall There are two kinds digital and analog Digital sensors Hall - with it you can detect the presence of magnetic field. They allow the output 0 - when the magnetic field is below the lower threshold , or 1 - when the magnetic field higher than the upper threshold. Between the lower and upper threshold of sensitivity zone is not there (hysteresis) to avoid false positives Hall sensor . Digital Hall sensors do more :
Applications Hall sensor can think of many :
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