KMITL

Permanent URI for this communityhttps://dspace.kmitl.ac.th/handle/123456789/1

Browse

Settings

Author: search.filters.author.Kaewjumras, YongyutSubject: search.filters.subject.Hall effect

Search Results

Now showing 1 - 2 of 2
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Contactless silicon-based multi-dimensional Hall sensor with simultaneous magnetic sensing and omni-rotational angle measurement
    (2019-01-01)
    Kaewjumras, Yongyut
    ;
    Prabket, Jirawat
    ;
    Titiroongruang, Wisut
    ;
    Niemcharoen, Surasak
    This experimental research proposes a contactless silicon-based two-dimensional (2D) Hall sensor capable of simultaneous parallel- and perpendicular-directional magnetic sensing, with a 360° angle measurement. The Hall sensor was of non-symmetrical five-ohmic contact configuration (C1 – C5). In the study, experiments were carried out in three stages. In the first-stage experiment, the current (I) and voltage (V) of the 2D Hall sensor were determined under three schemes: schemes A (C1&C2), B (C2&C5), and C (C3&C4). In the second-stage experiment, the parallel and perpendicular absolute sensitivities of the 2D sensor were examined. Considering the discrepancy between the parallel and perpendicular absolute sensitivities, signal conditioning circuitry was incorporated into the sensor system to compensate, and the rotational angles measured in the final-stage experiment. The results revealed that the I-V curves were dominantly linear, corresponding to Ohm’s law. However, the parallel and perpendicular absolute sensitivities were low and unequal. Thus, signal conditioning circuitry was incorporated into the system to address the discrepancy and improve the performance. Importantly, the 2D Hall sensor exhibited a mere ±3<sup>o</sup> discrepancy between the measured and reference rotational angles, given the magnetic flux density of 1000 G, with the hysteresis error of 2.8%. In essence, the proposed contactless silicon-based 2D Hall sensor possesses high potential for high-precision industrial applications.
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Application of Multi-Dimensional Hall Sensor for Gauss Measurement
    (2017-01-01)
    Kaewjumras, Yongyut
    ;
    Mano, Athirot
    ;
    Titiroongruang, Wisut
    This paper reported on a two-dimensional Hall sensor enabling to measure the two spatial components of the magnetic field and applied for gauss measurement application. The device was operated through only five contacts and tested by varying the magnetic flux density from -5000 to 5000 Gauss (G) and using signal conditioning circuitry for amplifying and adjusting the both similar sensitivity. After that, the output signals were converted to digital signals by ADC for transmitting a computer using LAB-VIEW programming and comparison with the standard gauss meter (F.W.Bell5170). The result of gauss measuring application comparison with the standard gauss meter has done with a precision of 0.04-3.80% including a calibration process.