ICTACT Journal on Microelectronics

M. Augusta Angel ¹, A. Narendra Kumar ¹

Affiliations
1 Department of Electronics and Communication Engineering, V V College of Engineering, IN

Abstract

Over the past few decades, the intense growth of portable communication devices has led to stringent need of efficient system performance. The system performance is upgraded by reducing the computation time using the Residue Number System. Since, it performs the complex computation efficiently. In this paper, the modified prefix adders are proposed to perform the fast modulo computations and make use of the available resources. The projected modulo adders computes the complex modulo operations in reverse conversion process of RNS independently and in parallel without carry propagation. This results in better performance than the other typical adder components in terms of area and delay.

Keywords

Residue Number System, Reverse Converter, Prefix Adders, Computations.

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R. Esakki Ponniah ¹, M. Augusta Angel ²

Affiliations
1 Department of Electronics and Communication Engineering, National Institute of Electronics and Information Technology, IN
2 Department of Electronics and Communication Engineering, V V College of Engineering, IN

Abstract

To explore the world most of the time the visually impaired persons are greatly depend on assistant for navigation. They face difficulties in independent mobility hence they use white canes for support. The white cane, due to its primitive design, is unable to offer the visually impaired a level of independence that is achievable with modern technology. Further, the visually challenged are unable to know the location without sighted assistance as they cannot read the board. This paper implements a low cost Embedded Cane, to address the above problems. The proposed embedded cane detects the knee above obstacles, pits which helps the visually impaired people to navigate carefree, and communicate with the user through voice alerts and vibrations, which in-turn considerably reduces accidents. It also helps the user to identify the location. When an obstacle is detected, signals will be sent to microcontroller unit, which is pre-programmed to calculate the distance and send appropriate signal to wav audio player to play pre-recorded audio message. The vibrating motor will vibrate if the distance of the obstacle is nearby or less than 40 cm distance. RF Receiver helps to find the location in the indoor. Thereby it improves safety for the visually impaired user.

Keywords

Walking Aid, White Cane, Microcontroller, Embedded Cane, RF Receiver and Ultrasonic Sensors.

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