EFFECTIVE FAST RESPONSE SMART STICK FOR BLIND PEOPLE
Published In: 2ND INTERNATIONAL CONFERENCE ON ADVANCES IN BIO-INFORMATICS AND ENVIRONMENTAL ENGINEERING
Author(s): AHMED F. SEDDIK , AYAT NADA , MAHMOUD A. FAKHR
Abstract: Visually impaired people find difficulties detecting obstacles in front of them, during walking in the street, which makes it dangerous. The smart stick comes as a proposed solution to enable them to identify the world around. In this paper we propose a solution, represented in a smart stick with infrared sensor to detect stair-cases and pair of ultrasonic sensor to detect any other obstacles in front of the user, within a range of four meters. Moreover, another sensor is placed at the bottom of the stick for the sake of avoiding puddles. Speech warning messages and the vibration motor are activated when any obstacle is detected. This proposed system uses the microcontroller 18F46K80 embedded system, vibration motor and ISD1932 flash memory. The stick is capable of detecting all obstacles in the range 4 meter during 39 ms and gives a suitable respect message empowering blind to move twice his normal speed because she/he feels safe. The smart stick is of low cost, fast response, low pow
- Publication Date: 19-Apr-2015
- DOI: 10.15224/978-1-63248-043-9-29
- Views: 0
- Downloads: 0
DEVELOPMENT OF AN INTEGRATED METHODOLOGY FOR FOULING CONTROL IN MEMBRANE BIOREACTORS
Published In: 2ND INTERNATIONAL CONFERENCE ON ADVANCES IN BIO-INFORMATICS AND ENVIRONMENTAL ENGINEERING
Author(s): A. TOLKOU , A. ZOUBOULIS , D. ZAMBOULIS , E. PELEKA , M. MITRAKAS , P. GKOTSIS
Abstract: The most serious drawback in wastewater treatment using membrane bioreactors (MBRs) is membrane fouling, which gradually leads to membrane permeability decrease and efficiency deterioration. This work is part of a research project that aims to develop an integrated methodology for membrane fouling control, using specific chemicals which enhance the coagulation and flocculation of compounds responsible for fouling, hence reducing biofilm formation on the membrane surface and limiting the fouling rate acting as a pre-treatment step. For this purpose, a pilotscale plant with fully automatic operation achieved by means of programmable logic controller (PLC) has been constructed and tested. The experimental set-up consists of four units: wastewater feed unit, bioreactor, membrane (side-stream) filtration unit and permeate collection unit. Synthetic wastewater (BOD=1000 mg/L) was fed as the substrate for the activated sludge (F/M=0.2 kg BOD/kg MLVSS∙d). The dissolved oxygen (DO) concentratio
- Publication Date: 19-Apr-2015
- DOI: 10.15224/978-1-63248-043-9-30
- Views: 0
- Downloads: 0