ISSN Vol.07,Issue.08, July-2015, Pages:

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1 ISSN Vol.07,Issue.08, July-2015, Pages: Robot Control Design Based on Smartphone in Home Applications ANUGU ARCHANA REDDY 1, L. PRATHIMA REDDY 2 1 PG Scholar, Dept of ECE, Kasireddy Narayan Reddy College of Engineering and Research, Hyderabad, India, anugu.archana@gmail.com. 2 Asst Prof, Dept of ECE, Kasireddy Narayan Reddy College of Engineering and Research, Hyderabad, India, prathima.likki@gmail.com. Abstract: An open-source platform Android has been widely used in smart phones. Android has complete software package consisting of an operating system, middleware layer and core applications. Android application, Smart phones are becoming each time more powerful and equipped with several accessories that are useful for Robots. The purpose of our project is to provide powerful computational android platforms with simpler robot s hardware architecture. This project describes how to control a robot using mobile through WI-FI communication, some features about WI-FI technology, components of the mobile and robot. We present a review of robots controlled by mobile phone via moving the robot upward, backward, left and right side by the android application such as Arduino, WI-FI. WI-FI has changed how people use digital device at home or office, and has transferred traditional wired digital devices into wireless devices. A host WI-FI device is capable of communicating with up to seven WI-FI modules at same time through one link. We are developing the remote buttons in the android app by which we can control the robot motion with them. And in which we use WI-FI communication to interface controller and android. Controller can be interfaced to the WI-FI module though UART protocol. According to commands received from android the robot motion can be controlled. The consistent output of a robotic system along with quality and repeatability are unmatched. Pick and Place robots can be reprogrammable and tooling can be interchanged to provide for multiple applications. We derived simple solutions to provide a framework for building robots with very low cost but with high computation and sensing capabilities provided by the smart phone that is used as a control device in home applications like bulb and fan. Keywords: Smartphone, Robot, Wireless Network. I. INTRODUCTION The project aims in designing a Robot that can be operated using Android mobile phone. The controlling of the Robot is done wirelessly through Android smart phone using the WI-FI feature present in it. Here in the project the Android smart phone is used as a remote control for operating the Robot. The controlling device of the whole system is a Microcontroller. WI-FI module, DC motors are interfaced to the Microcontroller. The data received by the WI-FI module from Android smart phone is fed as input to the controller. The controller acts accordingly on the DC motors of the Robot. In achieving the task the controller is loaded with a program written using Embedded C language. There are many mechanism and controllers that can control a robot and other remote controlled devices. But we have to create extra space for remote s and other controlling devices. If we develop such a kind of controlling device that can handle different devices such as T.V, robots, home electrical system etc. we don t have to create extra space for remotes. So android smart phone can be used as a controlling device with the help of proper android application a robot is nothing but a manmade mechanical device for the well-being of mankind. So a robot can also be used for travelling purpose if equipped with proper electronic components. The interaction of robot and android smart phone can be done with WI-FI technology. Our system aims to achieve the target to design a system that can provide following functionality Develop an android application that will act as a remote of a robot. Develop a robot which will be helpful for travelling. Here the focus is on the latest technology of android and robot also called as robot. An android smartphone and the technology of android is vast and can be used to interact with embedded system. Mobile, robot and WI-FI are the on-going technologies which can be used for the benefit of mankind. The system will consist of following four parts: WI-FI technology Android smartphone Microcontroller and DC motor. Android smartphone will act as remote of the system, WI- FI will act as the connection link between robot and android smartphone, microcontroller will act as the brain of the robot, and DC motor will help us to move the robot. This report describes about the real time android technology that can be 2015 IJATIR. All rights reserved.

2 used as an interaction between embedded systems. The basic function of WI-FI serial module is replacing the serial port line by connecting one to WI-FI master device and the other connecting to slave device. Today, robots are enjoying resurgence. As computer processors are getting faster and inexpensive, robots can afford to get smarter. While, researchers are working on ways to help robots move and think more efficiently. Since most robots in use today are designed for specific tasks, our goal is to someday make universal robots that are flexible enough to do just about anything a human does and more. Android is a software stack for mobile devices that includes an operating system and key applications. Android applications provide access to a wide range of useful libraries and tools that can be used to build rich applications. Android also includes a full set of tools that provides developers with high productivity and deep insight into their applications. WI-FI is a technology with an open standard specification for a radio frequency (RF)- based short range connectivity technology that changes the face of computing and wireless communication. The data received by the Blue-tooth module from Android smart phone is fed as input to the controller. Thereby, the controller acts accordingly on the DC motors to move in the entire robot in all the four directions using the Android phone. Robot control design using a smartphone is the direct usage of a simple device that is as simple as our easy to carry, the mobile phones to drive a robot which is considered quiet complex when comparisons are made to the mobile phones. Here in this system the mobile phone will carry out the controlling of robot with the help of a smartphone application. The smartphone application will be developed in such a way that it is compatible to all the current versions of Android. The smartphone application will communicate to the robot with the help of WI-FI module which is fitted on the Robot. The robot that is the skateboard (from the view of our project) is mechanically modified in order to fit the WI-FI module and microcontroller. The microcontroller will read the instructions from the smartphone application with the help of WI-FI and gradually will control the Robot with the help of DC motor. II. SYSTEM INTERFACES, INPUTS, AND OUTPUTS The system interface consists of following entities- Smartphone device, Android Application, Skateboard (Robot), Microcontroller and DC Motor. The Smartphone device acts as the base hardware on which the Android Application plays the role of an interface. The input is given to the skateboard through the application which is fed to the skateboard through WI-FI module which transfers the instructions passed by the smartphone application to the skateboard. The DC motor is also in synchronization with the microcontroller which makes the robot perform the required kinds of motion. A. Expected Outcomes The robot (skateboard) should be used for travelling as a basic outcome with minimal energy usage. Since the ANUGU ARCHANA REDDY, L. PRATHIMA REDDY motors used are completely environment friendly, the travelling for shorter distances could be made feasible. III. WORKING OF THE PROPOSED SYSTEM Our proposed system consists of following components: Android smartphone Wi-Fi module Microcontroller DC power supply Motor Driver DC motor An Android smartphone will act as remote controlled device for movement of the robot. An Android application will be developed for the same. The application will support only the 2.2 and above versions of Android Operating System. The WI-FI module will act as an interface between Smartphone and microcontroller. We will be using HC-05 WI-FI module for the system, which can be used as either master or slave. Generally our master will be smartphone and slave will be WI-FI module. WI-FI module will give the commands given by smartphone to the microcontroller. Microcontroller will act as the brain of the robot. The robot movement will be decided by the microcontroller. In this system we will be using microcontroller named Arduino Uno which contains At mega 328p microcontroller chip. The microcontroller will be programmed with the help of the Embedded C programming. Arduino has it own programming environment through which the microcontroller can be programmed (fig 1). Fig.1: Working of proposed system. As our system is for travelling purpose we will be using a DC motor. It will generate high amount of power and torque which will be sufficient to drive a human being. A motor driver will be used to control the DC motor, will we connected to the microcontroller and the WI-FI module will be connected to the same. In this proposed system we will be using any rechargeable battery to supply power to the electronic components of the system. Mainly the microcontroller and DC motor will be in need of power supply. The model represents a general idea how our robot will look like and it s interfacing with the android

3 Robot Control Design Based On Smartphone In Home Applications smartphone. Our robot will be made up of following components: Skateboard DC motor Motor driver Microcontroller Wi-Fi module.power supply All of the above mentioned components will be mounted on the skateboard. And as mentioned in the system architecture the working will be processed (fig 2). communication. Use the TCP protocol communication between the client and the server, it first need to establish a connection, then each of the client-side and server-side program creates a Socket object binding the connection. Both ends of the program can read and write data by connected binding Socket object [2]. In the mode of Client/Server, two classes are divided them into: Client Socket and Server Socket. In this design, the client is smart phone and the server host is robot. Fig.3 is specifics block diagram when the communication is in progress between smart phone and robot. Fig.4 is the socket communication principle diagram for this design. Fig.3. Specifics Block Diagram. Fig.2: system architecture. DC motor is 600 rpm and 11nm motor which will be able to drive about kg weight. Motor driver is used to control DC motor, which will be of 24 volts and 20 amperes made up using H-bridge. The microcontroller is the Brain of the robot and is used to connect the smart phone through the WI-FI module. The motor belt driver is used to connect the wheels of the skateboard and the dc motor through driving cog. The entire electronic component except the motor and belt will be kept in Electronic component case. Android smartphone: The android smartphone will act as a remote control for the robot. Acceleration and de-acceleration of the robot can be done with the help of the android smartphone. All Electronic and mechanical component will be mounted on the skateboard. To provide mechanical strength to the board for bearing extra weight an elastic property using aluminum covering over the joined with resin will be provided. This will increase the physical strength of the skate board. A. The Development of Robot First, the sockets are created and initialized, in other words, the sockets are bound to a local address and port and set in the monitor mode to be ready to receive the customer request. At this time, IV. SYSTEM DEVELOPMENT This design is to realize the communication between the intelligent mobile and the robot, and there is not too high requirement for the real-time performance, but the demand for the integrity of the data is quite high. From the above section, TCP is a reliable protocol that guarantees sequenced, ordered delivery of data and manages congestion within a network. So the programming based on TCP Windows Sockets is used to realize the Fig.4. The Socket Communication Principle Diagram for this Design.

4 ANUGU ARCHANA REDDY, L. PRATHIMA REDDY the Socket in robot keeps monitoring whether there is a connection request. If it finds that the smart phone Socket sends request for connection to the robot, and the robot can accept service request, the robot Socket will send accept message to the smart phone Socket. In this case, the connection between two Sockets object is established [2]. Fig.5 is the communication test interface for the server, and it can test whether or not the connection between robot and smart phone is realized accurately. Fig.5. Communication Test Interface for the Server. B. The Development of Smartphone The Android system is used to realize the control of Smart phone to the robot in the paper (fig 6). As is well known, Android is an open source phone operating system based on Linux platform developed by Google. The development of this system needs the Windows system of the PC and uses the Java language. After configuring the development environment of Android system, the development of the intelligent mobile terminal program in PCS can be began. And the intelligent mobile terminal needs to build a connection with the robot. So, the intelligent mobile need to know the host name of the robot and the service port provided by the robot. With this information, when intelligent mobile terminal sends a request to establish a connection with the robot, and the robot can accept the request, the smart phone will create a Socket object. Using this Socket object, smart phone can communicate with robot [2]. When the program about the development of intelligent mobile terminal is finished, a data line may be used to connect the smart phone and PC together. After that, the program is directly compiled the written, and the program will be downloaded to mobile phone. Fig.7 is the communication interface of mobile terminal. Fig.6. Flowcharts of the Development of Smartphone. Fig.7. The Communication Interface of Mobile Terminal. V. CONCLUSION Although this research is still in an early stage of development, it has already proven to succeed in several of its goals. The operating system of smart phone is android which can develop effective remote control program. At the same time, this program uses blue-tooth connection to communicate with robot. It has proven to allow for meaningful two-way communication between the Android phone and the robot which would allow a non-expert to interact with and adjust the functionality of a system the proposed system shows how the android smartphone can be used as remote controller for robot and various embedded technologies with the help of the WI-FI technology. The proposed system also shows that how a robot can be used for travelling purpose. The operating system of smartphone is Android, and it can develop effective remote control program and by using Wi-Fi wireless network, the communication between smartphone and robot can be realized, which makes it simple and convenient to control robot. VI. REFERENCES [1] Xiao Lu, Wenjun Liu, Haixia Wang, Qia Sun, Robot Control Design Based On Smartphone, IEEE [2] Xin Sun, VC++ Further Steps, Publishing House of Electronics Industry, BeiJing, [3] Jie Li, Reserch of the Security Mechanisms and its Characteristics of TCP/IP, Journal of Anhui Normal University Natural Science, Vol.25, No.4, [4] Jizhong Zhao, Zhengxiang Song, Yong Qi, Analysis and Discussing of Network Security Problem for Based on TCP/IP Protocol, Application Research of Computers, vol.17, no.5, [5] Yanyan Yang, Gang Wang, Exhaustive Analysis of TCP/IP Protocol's Deficiency, Application Research of Computers, vol.18, no.7, [6] Takahiro Shoji, Osamu Kato, Mitsuru Uesugi, Wireless Access Method to Ensure Each User's QoS In Unpredictable

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