Improvement of tracking methods in information providing system using LED traffic lights

Author

Sugawara, Yasuo ; Akanegawa, Masako ; TANAKA, Yuichi ; Nakagawa, Masao

Author_Institution

Dept. of Inf. & Comput. Sci., Keio Univ., Kanagawa, Japan

Volume

2

fYear

2002

fDate

25-28 Nov. 2002

Firstpage

1207

Abstract

We propose a new tracking method for an information providing system using LED traffic lights. The proposed tracking method is accomplished by comparing the correlation values of the packet header in each area of 4 division photodiode (PD). In this paper, to begin with, we show that the proposed tracking method can track the LED traffic lights better than the tracking method proposed previously for this system, and then, can also expand the service area. Next, we compare the performance among the proposed tracking schemes when the power of the ambient light is changed.

Keywords

LED displays; automated highways; optical communication; optical links; photodiodes; road traffic; traffic information systems; LED traffic lights; ambient light; information providing system; intelligent transport system; packet header correlation; photodiodes; service area; tracking methods improvement; Area measurement; Cities and towns; Communication system traffic control; Computer science; Light emitting diodes; Optical control; Optical receivers; Power system modeling; Testing; Voltage measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Communication Systems, 2002. ICCS 2002. The 8th International Conference on

Print_ISBN

0-7803-7510-6

Type

conf

DOI

10.1109/ICCS.2002.1183325

Filename

1183325