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This paper describes the design and implementation of a robotic car that can detect traffic signs in real environment and perform maneuvers accordingly. A webcam mounted on the car captures live images of the environment which are then processed using an onboard laptop where a simple template matching algorithm is used for the detection of these signs. Upon a successful match, an appropriate steering...
This paper proposes and implements an embedded wireless access control system using a combination of RFID and MMS technologies. The RFID and MMS sections are each controlled by a cost effective AT89C52 microcontroller. The microcontroller in RFID section is responsible for reading the user tag information, searching the read information in a memory chip for a match and triggering the microcontroller...
The paper describes the design and implementation of an intelligent autonomous vehicle that can navigate without human operator in unknown environments. Equipped with ultrasonic sensors, GPS receiver and camera, the vehicle can reach the destination by avoiding the obstacles in its way and followings the lanes on roads. Ultrasonic sensor and GPS receiver are interfaced to AT89C52 microcontroller which...
This paper proposes and implements a simple fuzzy logic controller for mobile robot navigation in corridor environments. An error signal corresponding to the deviation of robot from the central axis of the corridor forms input to the controller which generates speed commands for the robot to keep it in centre of corridor by minimizing the error signal. The error signal is determined with the help...
This paper describes the design and implementation of a fuzzy logic based controller for wall tracking behavior of mobile robot. The controller accepts inputs from three ultrasonic sensors and generates speed commands for differentially steered robot to track wall on its left side at a set distance. The controller is implemented in real time using an inexpensive 8 bit microcontroller and is validated...
In this paper, design of a cost effective RF based attendance and access control system for office use is presented. The design utilizes a low cost and readily available wireless door bell for wireless transmission of user information. The user module consists of an AT89C52 microcontroller which transmits different codes using transmitter section of door bell corresponding to various push buttons...
In this paper, design and development of a peg placement robot for participating in National Engineering Robotics Contest (NERC) 2009 is presented. The robot needs to place the pre-loaded pegs in pigeon holes while navigating through a grid of white reflecting lines. The sensory system of the robot comprises of infrared sensors for line following and peg placement tasks. Twelve infrared sensors are...
This paper proposes and implements a solution for enhancing public transportation management services based on GPS and GSM in Punjab province of Pakistan. The system consists of four modules: BUS Station Module, In-BUS Module, BASE Station Module and BUS Stop Module. Equipped with PC and GSM modem, BUS Station Module sends the initialization information containing the bus number and license plate...
In this paper, design and development of an autonomous ball potting robot for participating in National Engineering Robotics Contest (NERC) 2008 is presented. Equipped with infrared sensors, bump switches and potentiometers; all interfaced to AT89C52 microcontroller, the robot is capable of picking the balls from a ball stand and potting these balls into goal posts of different heights by navigating...
Ball-Scorer is a differentially driven autonomous robot that was fabricated to compete in National Engineering Robotics Contest (NERC) 2008. This paper discusses the development of each component of the robot that is designed to pick up the balls from ball stand by navigating through a grid of white lines and potting these balls into goal posts of different heights. The sensory system of robot comprises...
This paper describes the implementation of a neural network based hurdle avoidance controller for a car like robot using a low cost single chip 89C52 microcontroller. The neural network is the multilayer feed-forward network with back propagation training algorithm. The network is trained offline with tangent-sigmoid as activation function for neurons and is implemented in real time with piecewise...
In this paper, design of a low cost autonomous vehicle based on neural network for navigation in unknown environments is presented. The vehicle is equipped with four ultrasonic sensors for hurdle distance measurement, a wheel encoder for measuring distance traveled, a compass for heading information, a GPS receiver for goal position information, a GSM modem for changing destination place on run time...
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