Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
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Location Measurement method Depending on Reflection Characteristics of Ultrasonic Sensors for The Flat LED Lamp

평면 LED 램프에서의 초음파 센서의 반사특성을 고려한 위치측정 기법

  • 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)
  • Received : 2013.09.30
  • Accepted : 2013.10.30
  • Published : 2013.12.31
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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.

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References

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