NDLI: Modeling the light of LED's for position detection with an optical sensor

Content Provider	IEEE Xplore Digital Library
Author	Pop, S. Ciascai, I. Bande, V. Pitica, D.
Copyright Year	2010
Description	Author affiliation: Technical University of Cluj-Napoca, Applied Electronics Department, 24-26, Baritiu, Cluj-Napoca, Romania (Pop, S.; Ciascai, I.; Bande, V.; Pitica, D.)
Abstract	The optical systems are increasingly used to determine the motion. The optical systems use a light source like a LED and an optical sensor, they are based on the object view on the optical sensor. One parameter measured in building management is building movement. The accuracy is critical in building safety, the requirements is ±150μm. The geometrical principle of measurements considers the LED's as a point and a uniform light source. The emitted light is affected by the refraction on LED and on the optical sensor surface. The optical phenomenon and the erroneous position of LED on the PCB affect the geometry of measurement. All these introduce an error in object position calculation having the magnitude of mm. These phenomena can be modeled by a calibration equation which is established by interpolating the measured value with the object position measured with a high accuracy position system. For increasing the accuracy of measurement the calibration equation is determinate on areas. The measurement system use a microcontroller as a central processing unit, the complexity of calibration equation is limited by the power calculus of microcontroller. Using the modeling equation the accuracy of measurement is essential improved. On 0X direction the accuracy is of ±50μm and on direction 0Y is ±150μm.
Starting Page	374
Ending Page	377
File Size	206893
Page Count	4
File Format	PDF
ISBN	9781424478491
e-ISBN	9781424478507
DOI	10.1109/ISSE.2010.5547321
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-05-12
Publisher Place	Poland
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wire Optical sensors Optical variables measurement Light sources Adaptive optics Position measurement Mathematical model
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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