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http://dx.doi.org/10.5207/JIEIE.2013.27.12.038

Location Measurement method Depending on Reflection Characteristics of Ultrasonic Sensors for The Flat LED Lamp  

Heo, Young-Rok (Department of Electrical Engineering, Soongsil University)
Yun, Jang-Hee (Department of Electrical Engineering, Soongsil University)
Ryeom, Jeong-Duk (Department of Electrical Engineering, Soongsil University)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.27, no.12, 2013 , pp. 38-43 More about this Journal
Abstract
In this paper, the location measurement method for the reliable location data using ultrasonic sensors is proposed for the dimming control of the LED flat lamp. The measurement errors depending on the reflection angle of the object have to be considered to obtain the reliable location data in the ultrasonic sensors. In the experiment, the cause of the measurement errors depending on reflection angle is analyzed and velocity change of ultrasonic wave depending on reflection angle is measured. And the location measurement method depending on velocity change of ultrasonic wave is proposed. From the results, the average absolute deviation of the x-coordinates was 1.47cm when the location measurement method was considered, and it was closer to the true values than the average absolute deviation of the x-coordinates which was 5.89cm without regard to the reflection angle.
Keywords
Location Measurement; Ultrasonic Sensors; Local Lighting; Flat LED Lamp; Smart Lighting;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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