Browsing by Author "Gunasekara, RT"

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    item: Conference-Abstract
    Enhanced position sensing device for mobile robot applications using an optical sensor
    (2016-04-26) Abeykoon, AMHS; Udawatta, L; Dunuweera, MS; Gunasekara, RT; Fonseka, M; Gunasekara, SP
    This paper introduces a low cost method of sensing position using a optical sensor. Main objective of this study was to overcome the shortcomings associated with the conventional contact type of position sensors using a low cost device. In a slippery terrain, rotary encoder based data often produce erroneous results, whereas, if optical based method is used it would be preferred. For this study, PAN 3101 type low cost CMOS optical sensor is used. This sensor is often used for making computer mice. Built device comprises of a PAN 3101 sensor, lens assembly, illuminating components and a micro controller based interface. Lens assembly comprises of the convex lenses. PAN 3101 sensor processes the images that are taken through the lens assembly and gives the position in terms of relative distances traveled in vertical and horizontal directions. Micro controller based interface handles the communication between PAN 3101 sensor and the main application that utilizes this technology. So this module can be used in applications that needs smooth position detection capabilities. Built device was attached to a mobile robot so that the robot can be driven from the position information of the rotary encoder and the new optical position sensing device. Results from both rotary encoder and optical device are presented to validate the applicability of the proposed concept.
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    item: Conference-Extended-Abstract
    Position detecting module
    (2010) Dunuweera, MS; Fonseka, M; Gunasekara, RT; Gunasekara, SP; ; Abeykoon, AMHS; Udawatta, L
    This invention relates to a method of sensing positions in application such as mobile robotic applications. The main objective of this invention is to overcome certain issues related to position detection mechanisms available in mobile robotic applications and other relevant applications that have position detection methods. Specifically the invention related to moving application to identify its distance traveled with a new optical design to PAN 3101 low cost CMOS optical sensor. PAN 3101 sensor process the images that are taken through the optical design and gives the position in terms of relative distances traveled in vertical and horizontal directions. Microcontroller that utilize this technology. So this module can be used in applications that needs smooth position detection capabilities.
  • Thumbnail Image
    item: SRC-Report
    Position detecting module
    Dunuweera, MS; Fonseka, M; Gunasekara, RT; Gunasekara, P; Harcha, AM; Abeykoon, S; Udawatta, L
    This invention relates to a method of sensing positions in application such as mobile robotic applications. The main objective of this invention is to overcome certain issues related to position detection mechanisms available in mobile robotic applications and other relevant applications that have position detection methods. Specifically the invention related to moving application to identify its distance traveled with a new optical design to PAN 3101 low cost CMOS optical sensor. PAN 3101 sensor process the images that are taken through the optical design and gives the position in terms of relative distances traveled in vertical and horizontal directions. Microcontroller that utilize this technology. So this module can be used in applications that needs smooth position detection capabilities.