Abstract
This dissertation discusses the impact of visible light communication (VLC) technology for Aviation Industry particularly at airport as well as vehicular transport systems. In general, we have designed both the transmitter and receiver circuits. This design has been performed by using Proteus circuit simulation which is leading PCB design circuit simulator developed by Labcenter Electronics Ltd and Fritzing open source computer added design (CAD) software for the design of electronic hardware developed by Interaction Design Lab Potsdam for the schematic and simulations before the construction of hardware components. We have experimentally tested the simulated results with transmitting and receiving data. Further, the other components used to create the transmitter and receiver circuit are presented in the dissertation. Initially, the transmitter circuit uses a 3W 2.0-3.6V Bridgelux star power LED and Infrared LED 3mm CL-IR RND 940nm connected directly to Arduino mega 2560 with other components for illumination and data transmission. The integration of both circuits is tested with single channel and it performed well, which make it novel attractive. At the receiver circuit, the TCS3200 colour sensor and a TSOP1738 sensor connected directly to the Arduino mega 2560 using separate components to detect the colours of different lights to transmit data. Functionally, the transmitter circuit and receiver circuit are powered by a source 230V AC to a 12V AC transformer and 230V AC to a 9V AC transformer, respectively. Furthermore, the communication has been established using two computers positioned on both side for connection with USB cable, and Arduino mega 2560 is used to modulate and demodulate outgoing and incoming signals. However, the colour-changing bulb to transmit different colour lights via the use of internet and manually (with human hand), Wi-Fi, cell phone and mobile hotspot are employed for the data transmission purpose. We have introduced different LED light bulbs with different heights, creating different angles at the transmissions, to investigate how the broadcast will behave. It compared with a 3W 2.0-3.6V Bridgelux star power LED for intensity. The experiments performed at different distances and heights. Further, an external light bulb introduced at the cause of the tests as noise, under dark room environments to check the behaviour of the effect of the transmission. The minimum Euclidean distances of each colour light bulbs are used in this experiment for different heights in a dark room environment to compute and compare their performance. This experiment utilises relatively inexpensive component to achieve it, such as Bridgelux star power LED (3W 2.0-3.6V) which transmits at a distance of 1cm for total colour detection without any errors. In the Infrared (IR) as an optical means of transmission, an infrared LED 3mm CL-IR RND 940nm transmits data at 5.65m distances and an error has been recorded. A colour-changing bulb has significantly higher intensity to transmit different colours lights with varying distances between 5cm to 30cm. At 10cm distance, maximum colour recorded, and then from 15cm to 30cm significantly smaller errors is recorded. the heights of 27cm and 197cm, other light bulbs are introduced at different angles as a noise to evaluate the system performance.
M.Ing. (Electrical and Electronics Engineering)