scholarly journals Smart Blind Stick Design and Implementation

Author(s):  
Amira. A. Elsonbaty

Technologies are rapidly evolving, allowing people to live healthier and simpler lives. Sightless people are unable to carry out their everyday activities, such as walking down the street, visiting friends or relatives, or doing some other mundane tasks. As a result, the smart stick is a stick that can assist a person in walking safely without fear of colliding with another person or solid objects is proposed as a solution to this major issue. It is a development of the traditional blind stick as it acts as a companion for the blind when walking by sending audio alerts to the blind via a headphone connected to the phone with obstacles (water/walls/stairs / muddy ground) and also enables him to make a phone call to ask for help. EasyEda software was used for designing and simulating electrical circuits, was used to model the electric circuit. This system functions similarly to a white cane in that it assists blind people in scanning their surroundings for obstacles or orientation marks. This system will be mounted on a white cane with an ultrasonic sensor, and a water sensor to detect changes in the environment. Ultrasonic sensors detect obstacles in front of it using ultrasonic wave reflection, water detection sensors detect whether there is a puddle.

2018 ◽  
Vol 4 (2) ◽  
pp. 125-130
Author(s):  
Anita Anita ◽  
Sy. Lukman Hakim Assagaf ◽  
Boisandi Boisandi

The purpose of this research was to find out the descriptive of pre-service physics teachers understanding of the concept of electrical circuits, especially in the characteristic of series circuits and parallel circuits. The method used in this research was a descriptive method. The sample of this research was the fourth-grade students who took Basic Electronics course. The primary data of this research collected from the students’ test consisted of 12 multiple choices. Data analysis concluded that the student’s understanding of the concept of the electric circuit was low, with an average percentage of total indicators of 84.4%.


2017 ◽  
Vol 84 ◽  
pp. 10-18 ◽  
Author(s):  
Chul-Woo Chung ◽  
Prannoy Suraneni ◽  
John S. Popovics ◽  
Leslie J. Struble

2018 ◽  
Vol 2018 ◽  
pp. 1-5
Author(s):  
Zhiyuan Zhu ◽  
Kequan Xia ◽  
Zhiwei Xu ◽  
Hongze Zhang

This paper sets out a simple and affordable method for the manufacture of a water sensor involving drawing marks on paper using a flexible pencil. The sensor indicates flexible endurance variations upon exposure to water or a drying surface. It can be employed for the detection of water substances in ethanol. In addition, an experiment suggests the usefulness of the sensor for the sensing of breath. This shows the immense potential applications of the sensor for wearable and also health-inspecting electronic gadgetry.


1981 ◽  
Vol 27 (95) ◽  
pp. 157-163 ◽  
Author(s):  
H. Gubler

AbstractTotal snow depth is determined by measuring the time of flight of an ultrasonic wave packet emitted from a sonic transmitter above the snow surface and reflected from the snow surface back to the receiver/transmitter system. The light-weight system is battery powered (operating time without battery change at least 8 months) and can be fixed to any post above the snow surface. The absolute precision is better than ±0.03 m. Data and commands are transmitted by a single two-wire system up to several kilometres.


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