Fluorescent Light-sensor-based Transreceiver

This paper describes a novel light-sensor-based information transmission system for indoor positioning and navigation with particular benefits for mobile and wearable computers. It can seamlessly extend outdoor GPS tracking to the indoor environment. In a novel manner, fluorescent light is used as the medium to transmit information, which is encoded by using a pulse frequency modulation technique. The user receives the encoded light information through a photo receiver. The information is passed into the wearable or mobile computer after the data are decoded. This information allows positioning information to be given to indoor mobile and wearable computers. We design an economical transmitter circuit by adding a few components to a commercial electronic ballast circuit for fluorescent lamps with a price of less than 10 USD. The proposed system can be used in Indoor guidance and navigation applications. This system is to identify the different blocks in the organization by using the RF transmitter. And the employer can be able to find where the employee in the organization. All the multinational companies are having more than 50 blocks in a single building those are working for different projects. So it is difficult to find by the new employee to know which block is belongs to which category. For this we are going to develop a new system which is apt for the new employee’s to know the different blocks in the organization. The internal architecture of the mechanism consists of a GPS receiver to track the position of the employee when he was at outside and a RF receiver receives the information from the individual blocks transmitters and he can be able to see the information which is regarding the block in the LCD display when he was entered in to indoor. For synchronizing all these blocks we arranged a micro controller for receiving the information through RF receiver and transmitting the position of the employee details. Every block in the organization is having a RF transmitter which is capable of transmitting the relevant information about the block name and relevant details about it. All the RF transmitters can be placed in 30m distance for avoiding the signal interference. We can increase the number of transmitters according to the organization requirements. GPS is the acronym for global positioning system which receives the information from the satellite anywhere in the world and provides the same for controller. The GPS provides us the data like location, time, and speed. The controller accepts these data in a sequence of steps as per instruction set as provided to the controller. KeywordsAugmented reality (AR), electronic ballast, fluorescent lamp, navigation, wearable computer.