| Title |
Development of Local Driving System for Flat LED Lamp Using Ultrasonic Sensors Array |
| Authors |
Sung-Ho Yoo ; Jeong-Hun Lee ; Jeong-duk Ryeom |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2011.25.12.067 |
| Keywords |
Position Recognition ; Ultrasonic Sensor Array ; Local Driving ; Lighting Control ; Flat LED LAMP |
| Abstract |
A method obtaining position data(x, y) of object accurately is proposed by using a pair of ultrasonic sensors composed of one transmitter and two receivers. And the driving system which controls the light of flat LED lamp locally using array of ultrasonic sensors (3 transmitters and 6 receivers) is developed. As a result, measured values of y are relatively reliable due to its small average of absolute errors of 1.03[cm]. The measured values of x have average error of 8.52[cm], and it is a large value. However, the average error is decreased by 0.65[cm] after applying algorithm for error correction. The experiments to control the light of flat LED lamp locally with algorithm for error correction are carried out. From the result, measured values of x with average error of 0.97[cm] are obtained and they are very good approximations of actual values. |