Design and implementation of a ubiquitous optical device controlled with a projector

ABSTRACT

We recently have seen illumination using Light Emitting Diodes (LEDs) on the street. The current illumination is difficult to control of flexibly and dynamically. In response to this problem, we propose a method controlling numerous LEDs collectively, dynamically, and flexibly by using a projector and small devices with optical sensors. We designed and implemented a small device to achieve our mechanism, which has an LED, an optical sensor, and a microcomputer to react to the light illuminated from a projector. Moreover, it has functions to self adjust the threshold and recognize optical commands, which are required for collective control. We discuss how effective our proposed device was in a study to evaluate it and in field tests done at actual events.

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INDEX TERMS

Primary Classification:
  B. Hardware
  B.4 INPUT/OUTPUT AND DATA COMMUNICATIONS

Additional Classification:
  B. Hardware
  B.1 CONTROL STRUCTURES AND MICROPROGRAMMING
      B.1.5 Microcode Applications

General Terms:
Design

Keywords:
LED, illumination, infrared, projector, ubiquitous device