Chapter 1 THESIS

CHAPTER I

INTRODUCTION

In previous years, machines and devices were developed and modernized to promote comfort and simplicity for the humankind. Engineers and Scientists develop and innovate in order to improve stuffs from heavy and bulky machines to light and more sophisticated devices. One good example is the improvement in terms of control systems. ately, control systems depend on mechanical levers and knobs. It had improved somehow by using push buttons and switches.

In our prese present nt gene genera ratio tion, n, we utili utilize ze the the bene benefit fits s of using using wirel wireles ess s technologies such as infrared !I"# and radio fre$uency !"%# waves and other  advance technologies like &luetooth and 'ireless %idelity !'i(%i# to link and control control differe different nt devices devices and even use these these advanc advancemen ements ts to connect connect and communicate from distant places. Such technologies play an important role in the modern control systems. "emote controllers exhibit the significance of I" waves to transmit commands in a form of light waves to control different devices such as stereos, televisions, televisions, )*)s and other remote(controlled remote(controlled devices wirelessly. wirelessly. "emote controllers also limit the use of mechanical parts of a device such a button buttons s and switch switches es to avoid avoid wear wear and tear of e$uip e$uipmen mentt and and to provid provide e comfortable access to the device.

+he +he rese resear arch cher ers s were were cons consid ider erin ing g of usin using g one one of thos those e wirel ireles ess s tech techno nolo logi gies es to deve develo lop p and and also also inno innova vate te curr curren entt appl applic icat atio ions ns of such such techn technolo ologie gies s that that can can opera operate te within within a smalle smallerr area area and exhib exhibits its seamle seamless ss communication between devices with the least re$uirement possible.

&lue &lueto toot oth h were ere comm common on feat featur ures es on mob mobile ile and and pock pocket et dev devices ices nowadays, the researchers consider this technology in the design of the study on providing seamless control and innovative method of wireless control.

+he researchers focus on security and accessibility in selecting the suitable wireless technology that will be the essential component of the design proect.

Background/Setting of the Study

%ilipinos were known to be family(oriented individuals all over the world. %amily bonding makes our weekends especially Sundays more relaxing and recreational. One activity that will suit our relaxation time is to watch movies in the expense of our own home with our televisions and )*) players.

+elevisions and )*) players were normally controlled via remote controllers with the aid of the infrared technology. Infrared re$uires line(of(sight in order to communicate and transmit command to adust parameters such as channel switching and volume adustments for televisions, playback features and scene selections for the )*) players. -ormally, we encounter some problems regarding the use of I" remote controllers. One good example is the lost or  misplaced remote controls. If the remote control is lost, we do not have the option to control our television specifically those televisions that do not have functional buttons and rely on the remote control. It also re$uires line(of(sight which demands users to build a direct connection between the remote and television.

&eing aware of those drawbacks, the researchers were convinced to commence a study regarding the development of an alternative process of  wireless remote control. onsidering cost and advancement, &luetooth technology offers secured connections, unparalleled versatility and faster data transfer. In comparison, &luetooth surpasses infrared in faster data transfer, communication range and omni(directional line of sight. &luetooth also is more accessible nowadays due to devices specifically mobile phones which enabled

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&luetooth connections. &luetooth also have the ability to connect different devices like personal computers, mobile phones and pocket devices together.

In accordance with this, the researchers will integrate the hardware with the software installed on a &luetooth enabled device as an alternative remote controller for a television. / separate hardware component will be constructed to serve as a median in order for the &luetooth and the Infrared to communicate. %or the software part of the design, the researchers then decides to use one of  the latest mobile operating system available commonly known as the /ndroid OS. 0ost mobile devices were introduced and running under the /ndroid OS platform. 1reat advantages of using this software is it provides graphical user  interface that please /ndroid users about their touch screen devices and it is an open(source program where users can access the code listings of the programs installed in their devices. +his study will impose an innovative alternative for the usual television remote controller. +his will also maximize the potential of /ndroid devices which usually exhibits remarkable interface and stunning gaming display.

1enerally, the study will not replace the typical infrared remote control2 instead it will be an innovative alternative solution for a remote control. +he design proect will be ust a substitute remote control in the event of lost or  misplacement, and even another fashion to appreciate your android device and for a comfortable viewing experience.

RESEARCH RA!E"OR#

Theoretica$ ra%e&ork

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In this part, concepts and established models were elaborated to serve as a paradigm of ideas which will be essential in the development of the prototype.

 /ccording to 1ilster !3443#, &luetooth is an open standard specification for  a radio fre$uency !"%#(based, short(range connectivity technology that promises to change the face of computing and wireless communication. It is designed to be an inexpensive, wireless networking system for all classes of portable devices, such as laptops, 5)/s !personal digital assistants#, and mobile phones. It also will enable wireless connections for desktop computers, making connections between monitors, printers, keyboards, and the 56 cable(free.

5otential for &luetooth applications is huge, because we transact business and communicate more with people who are close by than with those who are far  away ( a natural phenomenon of human interaction. +he following list represents only a small set of potential applications in future many more imaginative applications will come along7

&y installing a &luetooth network in the office, workers can do away with the complex and tedious taskof networking between the computing devices, yet have the power of connected devices. Each &luetooth device could be connected up to 344 other devices making the connection of every device with every other  possible. Since it supports both point to point and point to multipoint it will virtually make the maximum number of simultaneously linked devices unlimited.

+he &luetooth technology connects all office peripherals wirelessly. onnect 5 or notebook to printers, scanners and faxes without the ugly and troublesome cable attachments. 6sers can increase their freedom by connecting the mouse or  the keyboard wirelessly to the computer. 4

&luetooth allows the users to have three way phones. /t home, the phone functions as a portable phone. 'hen on the move, it functions as a mobile phone. /nd when the phone comes within range of another mobile phone with built(in &luetooth wireless technology it functions as a walkie(talkie. In meetings and conferences, users can transfer selected documents instantly with selected participants, and exchange electronic business cards automatically, without any wired connections.

It connects wireless headset to mobile phone, mobile computer or any wired connection to keep hands free for more important tasks when users were at the office or in the car.

B$uetooth'ena($ed De)ice* Sche%e*

 /. Operating %re$uency &luetooth networking transmits data via low(power radio waves. It communicates on a fre$uency of 3.89 gigahertz !actually between 3.843 1:z and 3.8;4 1:z, to be exact#. +his fre$uency band has been set aside by international agreement for the use of industrial, scientific and medical devices !IS0#.

&. 5ower "e$uirements One of the ways &luetooth devices avoid interfering with other systems is by sending out very weak signals of about < mill watt. &y comparison, the most powerful cell phones can transmit a signal of = watts. +he low power limits the range of a &luetooth device to about t re$uire line of sight between communicating devices. +he walls in the house won>t stop a &luetooth 5

signal, making the standard useful for controlling several devices in different rooms.

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"ange and Interferences &luetooth can connect up to eight devices simultaneously with all of those

devices in the same