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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...
This paper describes the design and implementation of a neural network controller capable of printing designs and drawings on paper using a Cartesian Plotter. The Cartesian plotter uses two dc motors with incremental encoders for motion along x and y-axis while third dc motor along z-axis controls the pen assembly for drawing the text and graphics data. The motion commands for the motors are generated...
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 describes the design of a two loop fuzzy controller for goal directed navigation of a differentially driven mobile robot in unknown indoor environments. The first loop is responsible for finding a collision free path amongst obstacles while second loop uses this information to steer the mobile robot towards the target in absence of nearby obstacles. The fuzzy controller is designed and...
This paper describes the design, implementation and comparison of zero order Takagi-Sugeno and Mamdani fuzzy logic controllers for hurdle avoidance task performed by a differentially steered mobile robot in indoor navigation. Both the controllers are two inputs, two outputs controllers. The controllers take input from two ultrasonic sensors, perform fuzzy algorithm and generate speed commands for...
This paper describes the design, implementation and comparison of two MIMO fuzzy logic controllers for corridor following behaviour of mobile robot in indoor environments. Both the controllers take input from two ultrasonic sensors mounted on front-left and front-right sides of the robot and generate commands for left and right motors. The controllers are designed using MATLAB® and their rule bases...
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...
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...
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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