LIGHT TO WORDS USING TECHNOLOGY

An architectural response: Thanks to light, natural as well as artificial, words are restored and given back to those who need them most. The light becomes words, bearer of the message. During this process, the sunlight is converted to electricity through the solar panel. This electricity is used in the LED lighting of interior workspace of an office. This LED light is used as an information transferring medium (like WIFI). Through this technology we can share HD videos, documents, other office files. This LIFI system can be used instead of WIFI system. The key benefits of LIFI system are:•Enhanced wireless infrastructures by providing an additional layer of small cells •The avoidance of the radio frequency spectrum crunch (10,000 times more capacity);•Enabling very high peak data rates (10 Gbps)•The enabling of the Internet-of-Things (100 times more devices)•Significantly enhanced secure wireless communication (reduced interception of signals)•Enhanced energy-efficiency by combining data communication and illumination (100 times energy reduction)•Complete elimination of health concerns.Components of LIFI systemThe Li-Fi system consists of key components like LED array, LED driver circuit, and a receiver. The LED array acts as a light source. It can be dimmed up and down at an extremely high speed without being visible to the human eye. The data is received from the server to the LED driver. Then the data is sent to the LED by the LED driver, which uses Signal Processing Technology to convert the message signal into binary codes that can be further transmitted. The LED blinks and transmits data which is embedded in its beam at rapid speed. The transmitted light wave is received by a photo detector. The rapid change in lights intensity of LED bulb is converted into electrical signal by the photo detector. The signal is converted into binary data by decoding and then amplified. This binary data is generally a web video or audio application that runs on internet. Li-Fi uses orthogonal frequency division multiplexing modulation method to optimize data rates, multiple access and Energy Efficiency.The RF communication system can provide frequency up to 300 GHz whereas Li-Fi can provide a frequency of 790 Terahertz. Li-Fi can give up to 224 gigabytes per second which is quite higher than the highest speed achieved by RF communication systems yet.Infrastructure in office workspace The infrastructure needed to build a smart office workspace contains main components like a server, transmission source, receiving element, device to interface with common devices and interactive board for client meeting and discussion.The server is used as a database of office and to access contents from internet. Transmitter source is used to transfer data. It contains two main components, namely LED driver circuit and the LED grid or array. The LED array contains high brightness LED that can be controlled by the LED driver circuit. These LED grids will be installed at the ceiling so that it can provide light at every point of the office. The receivers will be installed on every table. Accessing by the general devices can be done by using wires between receiver and the devices or attaching a separate compatible device to the main device (example Li-Fi dongle) to ensure continuous reception of data to the receivers.Since in office we will require a lot of internet to share bigger files (in MB) which will take a longer time or we have to compress and send while using wifi. But here there will be files sent easily with greater speed and without compressing. Advantages:•It will enhance the working experience for the workers by interactive working.•The data transfer can be done in much faster way compared to the traditional wired networks or Wi-Fi.•It can handle heavy network traffic.•The soft copy of the data can be shared with workers easily.•There will not be any harmful effects from the signals as they constitute of medium intensity light waves unlike the radio waves.•The design ensures the signal to be uniformly spread in every direction as it will help to ensure continuous flow of data at every point.•The devices can be easily installed without much need of external structure. Hence it is less labour intensive and also cost effective.•It is ideal for the workers who are working in groups. Every worker in office gets the same interactive experience.•It provides a wireless means of communication hence no need of installing extra wires that clutters the workplace.•The mobility of the devices is increased since it can be accessed all over the room.