International Journal of Modern Trends in Engineering and Research www.ijmter.com e-issn No.:2349-9745, Date: 28-30 April, 2016 MATLAB CONTROLLING COLOUR SENSING ROBOT Dhiraj S.Dhondage 1,Kiran N.Nikam 2, Tejashri P. Suryawanshi 3,Dr. V. A. Wankhede 4 1 E&TC, SNJB S KBJ college of Engineering, Chandwad,dhirajdhondage333@gmail.com 2 E&TC,SNJB S KBJ college of Engineering, Chandwad, nikam.kiran94@gmail.com 3 E&TC,SNJB S KBJ college of Engineering, Chandwad, tejashri.s94@gmail.com 4 E&TC,SNJB S KBJ college of Engineering, Chandwad,wankhedeva@gmail.com Dr. Abhay E.Wagh Director,MSBTE,Mumbai Abstract- Design an electronic system for direction control of robot through motion sensing object.this direction control would be kernelled by GUI / sequential program of matlab. The application of the colour detection technique using MATLAB algorithms, to control the state of the output pins of an PIC 18F4520 microcontroller and also to control the movements of an ROBOT Presented here is a MATLAB-based project where images taken by the camera are processed for colours and the position of a red-coloured object is extracted out of the image. Based on the position of the red coloured object in the image, different data are sent via RF module. The serial data are received by the robot and corresponding movement is done. Keywords- PIC microcontroller 18f4520, Max RS 232, Motor Driver IC L293D, DC Motor, Encoding IC (HT12E), RF transmitter and receiver Module, Matlab software @IJMTER-2016, All rights Reserved I. INTRODUCTION Design an electronic system for direction control of robot through motion sensing object.this direction control would be kernelled by GUI / sequential program of matlab. The application of the colour detection technique using MATLAB algorithms, to control the state of the output pins of an spic 18F4520 microcontroller and also to control the movements of an ROBOT A camera is one of the most powerful and accurate sensors if you know how to process the images taken by it for the information you want. You can process subsequent images and extract a variety of information using image-processing techniques. MATLAB is a very powerful tool and plays an important role in image processing. Image processing is converting an image into digital form and performing some mathematical operations on it, in order to get an enhanced image or to extract some useful information out of it. Presented here is a MATLAB-based project where images taken by the camera are processed for colours and the position of a red-coloured object is extracted out of the image. Based on the position of the red coloured object in the image, different data are sent via RF module. The serial data are received by the robot and corresponding movement is done. You can change the code for any colour that you find suitable. This project is just an example and you can use this for various industrial applications such as controlling heavy load-lifting machines with some object of a specific colour in your hand present in image processing tool box, to detect the centroid of a particular coloured image, and the change of the centroid co-ordinates will be detected, which will be applied to generate different commands. These commands would be fed to an PIC microcontroller to change the states of its output pins, and, to control the movement of an ROBOT in a particular direction. The main algorithm that is implemented is very simple and robust.
A camera takes continuous snapshots and a particular coloured region (predefined by user) of the images are bounded by a box. Then an algorithm is written that will sense the movement of the coloured box and generate different commands, each command corresponds to movements in a particular direction of an ROBOT (that is fed wirelessly to the robot) or state change of certain output pins of an PIC microcontroller. II. BLOCK DIAGRAM Figure.1: Block Diagram Of Transmitter Side Figure.2:Block Diagram Of Receiver Section @IJMTER-2016, All rights Reserved 782
2.1. PIC microcontroller (18f4520):- New Core Features Alternate Run Modes: By clocking the controller from the Timer1 source or the internal oscillator block, power consumption during code execution can be reduced by as much as 90%. Multiple Idle Modes: The controller can also run with its CPU core disabled but the peripherals still active. In these states, power consumption can be reduced even further, to as little as 4% of normal operation requirements. Self-programmability: These devices can write to their own program memory spaces under internal software control. By using a boot loader routine located in the protected Boot Block at the top of program memory, it becomes possible to create an application that can update itself in the field. 10-bit A/D Converter: This module incorporates programmable acquisition time, allowing for a channel to be selected and a conversion to be initiated without waiting for a sampling period and thus, reduce code overhead. 2.2.Motor driver IC: The L293 and L293D are quadruple high-current half-h drivers. The L293 is designed to provide bidirectional drive currents of up to 1 A at voltages from 4.5 V to 36 V. The L293D is designed to provide bidirectional drive currents of up to 600-mA at voltages from 4.5 V to 36 V Features of L293D :- 600-mA Output Current Capability Per Driver Wide Supply Voltage Range 4.5 V to 36 V Separate Input-Logic Supply High-Noise-Immunity Inputs 2.3 RF transmitter and receiver module:- An RF module (radio frequency module) is a (usually) small electronic device used to transmit and/or receive radio signals between two devices. In an embedded system it is often desirable to communicate with another device wirelessly. This wireless communication may be accomplished through optical communication or through radio frequency (RF) communication. For many applications the medium of choice is RF since it does not require line of sight. RF communications incorporate a transmitter and/or receiver. RF modules are widely used in electronic design owing to the difficulty of designing radio circuitry. Good electronic radio design is notoriously complex because of the sensitivity of radio circuits and the accuracy of components and layouts required to achieve operation on a specific frequency. In addition, reliable RF communication circuit requires careful monitoring of the manufacturing process to ensure that the RF performance is not adversely affected. Finally, radio circuits are usually subject to limits on radiated emissions, and require Conformance testing and certification by a standardization organization such as ETSI or the U.S. Federal Communications Commission (FCC). 2.4 Encoder And Decoder ic (HT12e&d):- The 212 encoders are a series of CMOS LSIs for remote control system applications. They are capable of encoding information which consists of N address bits and 12_N data bits. Each address/ data input can be set to one of the two logic states. The programmed addresses/data are transmitted together with the header bits via an RF or an infrared transmission medium upon receipt of a trigger signal. The capability to select a TE trigger on the HT12E or a DATA trigger on the HT12A further @IJMTER-2016, All rights Reserved 783
enhances the application flexibility of the 212 series of encoders. The HT12A additionally provides a 38kHz carrier for infrared systems. III. UTILITIES 1.In industrial automation 2.For object sorting 3.In military application IV. CONCLUSION The project is designed, implemented and tested successfully. The response of system to different object movements was satisfactory. Still some advancement can be included to for system to improve performance. Obstacle avoidance mechanisms can be included. This can be done by sensing the back ground images and processing it properly. Different active sensors such as infrared sensors and supersonic sensors are employed to measure the range in real time between the obstacles and robot. A mobile robot with various types on sensors via ubiquitous networks can be introduced. A mobile robot composed on TCP/IP network, wireless camera and several sensors in an environment can be constructed,and show obstacle avoidance and object tracking methods necessary with providing diverse services desired by the people. REFERENCES [1]International Journal of Innovative Research in Computer and Communication Engineering 2007 Certified Organization B. Tech. Student, Department of Electronics and Communication Engineering Mar Athanasius College of Engineering, Kothamangalam, Kerala, India. [2]International Journal of Emerging Technology and Advanced Engineering ISO 9001:2008 Certified Journal Sree Buddha College of Engineering for Women, Kerala,India 3Asst.Prof, Department of Electronics and Communication, SBCEW, Kerala, India [3]Department of Electrical and Electronics Engineering, West Bengal University of Technology, Kolkata, WB, India,International Journal of Scientific and Research Publications, Volume 4, Issue 1, January 2014 [4]Jaison Varghese John, P.Balashankar and Muhammad T M Nadeer. Pick and Place Colour Sensing Robot. IJCA Proceedings on International Conference on VLSI, Communications and Instrumentation,(ICVCI) (1):6 9, 2011.) @IJMTER-2016, All rights Reserved 784