Smart Cane for Visually Impaired Person

Vineeth, I; Sharan, Yair; Karthik, Y; Priya, Bhanu

doi:10.1109/conit51480.2021.9498563

Cited by 2 publications

(3 citation statements)

References 13 publications

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“…Findings has also revealed that the accuracy was about 97%, which implies that the design conforms to the correct value specifications of the circuit and that object detection using the constructed device is close to that of a standard walking stick and we are 97% sure. However, of all the previous work reviewed, none of the similar works were able to calculate specificity, sensitivity and accuracy such as [2], [3], [11], [14], [16], [18], [19], [20], [21], and [22]. This reveals the additional contribution of this work to the existing literature.…”

Section: Discussionmentioning

confidence: 90%

“…It contain chip central processing unit (CPU), Read Only Memory (ROM), Random Access Memory (RAM), input/output unit, interrupts controller etc. [11]. Therefore a microcontroller is used for high speed signal processing operation inside an embedded system.…”

Section: A Avr Microcontroller Circuitmentioning

confidence: 99%

“…In an embedded system it is often desirable to communicate with another device wirelessly. This wireless communication maybe accomplished through optical communication or through radio frequency (RF) communication [11]. The RF module is shown in figure 4.…”

Section: Rf Modulementioning

confidence: 99%

See 2 more Smart Citations

Implementation of Electronic Walking Stick for the Blind Using a Microcontroller and Ultrasonic Sensor

Yusuf¹,

Umar²,

S.R³

2021

IJEEA

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The difficulties encountered by visually impaired people has been a major problem in our society. How to carter for their mobility, reduce the danger and difficulties of finding obstacle in their ways and make movement so fast and safer for them. In this study, an electronic walking stick for the blind was implemented using a microcontroller Atmega328 and an ultrasonic sensor. The electronic circuit was simulated in stages using Proteus 8.0 design suit. Stages includes the RF module unit, moisture sensor unit, Light sensor unit, ultrasonic module unit, voltage regulator unit, and the buzzer unit. The simulated circuit was constructed on a printed circuit board and tested for continuity and power ON. Also an evaluation performance test was carried out with 40 volunteers who were blindfolded and walked through a path with the stick for straight obstacles detection, water detection, and the remote control detection. The true positive, false positive, true negative and false negative were recorded. Results shows that the constructed walking stick performed very well according to the specification of the design with sensitivity of 98% and specificity of 96%. Implying that the constructed device can correctly identify 98% presence of obstacles and 96% of No obstacle along the path with 97% accuracy. However, it may also fail to identify 2% presence of obstacles and 4% of obstacles when there are no obstacles. The walking stick with an alarm system is a welcoming solution for the visually impaired people since the device can serve to them like an artificial vision. It is affordable, light weight and suitable for the blind people to aid in their navigation.

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