Thus, the visually challenged considers the person who has total vision loss or partial vision loss.Īccording to an 11 October 2017, report from the World Health Organization (WHO), an estimated 253 million people are living with vision impairment, out of which 36 million are totally blind and 217 million have moderate to severe vision impairment. Blindness also refers to those who have so little vision that they use other senses as vision substitution skills. Blindness is a state of condition where the individual is unable to see and has no light perception. There are a number of severe disabilities, of which blindness is one of them, in which a person needs to face many problems despite a number of technological advancements. However, there are several people in the world who are deprived of this. In addition, they play a vital role in the lives of humans, because 83% of information from the environment is obtained through the eyes. This device will help VCPs to live an independent life up to some extent (with security), which ultimately will increase their confidence level in an unknown environment.Įyes, organs of vision, are an important part of human physiology, as they have the ability to receive and process visual detail to the brain. We used fewer components to make the device simple, lighter, and cozy with very good features. Another important APP is used, called an emergency APP, by which the VCP can communicate with parents or friends immediately by just shaking his/her cell phone or pushing the power button four times in 5 s in panic situations. The GPS module receives the coordinates of the VCP’s location, and the location can be tracked by parents using an APP. Sensors help to detect obstacles, and the VCP is informed through vibrations or a buzzer according to the obstacle detected. The walking stick is embedded with Raspberry Pi and programmable interface controller (PIC) as a control kernel, sensors, a global position system (GPS) module, and alert-providing components. This system comprises a walking stick and Android-based applications (APPs). Thus, in this paper, we present an aid that helps in detecting obstacles and water puddles in their way. Usually, in many cases, they need to depend upon others, which makes them unconfident in an unfamiliar environment. Visually challenged people (VCPs) face many difficulties in their routine life.
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