DISPLACEMENT MEASUREMENT USING THE HALL EFFECT SENSORS

Abstract

Urgency of the research. There are several types of measurement principles for displacement measurement. Hall effect sen- sor is one of them. Hall sensor has several advantages and there is a need for identification of suitable application principles. Target setting. The selected Hall effect displacement sensors are a low-cost part, which are useful for many various applications. The aim is to identify principles and behaviours of using of these sensors in various modes. Actual scientific researches and issues analysis. The Hall effect sensors working on effect, where magnetic array influences the output voltage on these sensors. There is a problem with definition of suitable configuration of arrangement of these sensors. It depends on polarity of magnetic array and intensity of magnetic array. Also, placement of the sensor is important for this sensing application. Uninvestigated parts of general matters defining. The main problem is expressing of transformation characteristic, which depends on used permanent magnet as source of magnetic array. There is no regulations and recommendation for using these sensors as a displacement sensor. The question is also about the reliability of these sensors and minimum number of measurements for minimized uncertainty of measurement and stability of measured data. Long distance sensing measurements are uninvestigated, therefore the next research will be focused on this area. The research objective. The aim is to obtain any useful experience and recommendations about the using of these sensors. Several sensors also have the hysteresis effect, which is as problem and it is parasitic effect for measurement. The statement of basic materials. The Hall effect with ratiometric voltage output have been explored. So, it is analogue sensors with voltage reaction to changed displacement. Conclusions. The selected explored sensors have perfect properties for displacement measurement. They are potentially applicable for very sensitive and precise measurement of displacement.