Indoor Positioning By Led Visible Light Communication And Image Sensors

Indoor positioning systems based on vlc can be used in places such as hospitals eldercare homes warehouses and large open offices to locate people and control indoor robotic vehicles.

Indoor positioning by led visible light communication and image sensors.

There is wireless network that for data transmission uses visible light and does not use intensity modulation of optical sources. Vlc systems take advantage of the fast modulation of the visible light that light emitting diodes leds enable. High power white leds are expected to replace the existing lighting technologies in near future which are also suggested for visible light communication vlc. Advances in visible light communication vlc technology and the ubiquity of illumination facility have led to a growing interest in vlc based indoor positioning.

Indoor white light leds are located at. Visible light communication vlc based on solid state lighting ssl is a promising option either to supplement or to substitute existing radio frequency rf wireless communication in indoor environments. We propose an algorithm for high precision indoor positioning using lighting leds vlc and image sensors. In this paper we propose a higher accuracy indoor positioning algorithm using a stereo image sensor and white light leds by the visible light communication.

Recently visible light communication vlc has been widely used in indoor positioning which has such advantages as cost saving environmentally friendly anti radio frequency interference anti rf interference and so on. Numerous techniques have been. 1 the working principle of complementary metal oxide semiconductor cmos image sensor is called rolling shutter mechanism which is utilized to realize led id recognition by visible light positioning vlp. A quick detection algorithm based on the novel designed led array and the connected component labeling technique is proposed and applied in image sensor based visible light communication is vlc system.

Inspired by the quick response qr code design the four corner leds on the array are defined as flag leds and three of them. We proposed an algorithm for high. As is shown in fig. In fact the rolling shutter mechanism is to expose and read row by row and read the data of the row out promptly after each row is exposed.