Abstract
Conventionally, visually impaired people using white cane or guide dog for traveling to desired destination. However, they could not identify their surround easily. Hence, this paper describes the development of navigation system which is applied to guide the visually impaired people at an indoor environment. To provide an efficient and user-friendly navigation tools, a navigation device is developed by using passive radio frequency identification (RFID) transponders which are mounted on the floor such as on tactile paving to build such as RFID networks. The developed navigation system is equipped with a digital compass to facilitate the visually impaired people to walk properly at right direction especially when turning process. The idea of positioning and localization with the digital compass and direction guiding through voice commands is implemented in this system. Some experiments also done which is focused on the calibration of the digital compass and relocates the visually impaired people back to the right route if they are out of the direction. Besides, a comparison between two subjects which are human and a mobile robot is made to check the validity of the developed navigation system. As the result, the traveling speed of human and mobile robot is obtained from the experiment. This project is beneficial to visually impaired people because the navigation device designed with voice commands will help them to have a better experience, safer and comfortable travel.
Highlights
World Health Organization (WHO) has released the statistics in 2014 that shows 10% of the world’s population have a disability, with 80% of them located in developing countries
The digital compass measurement clearly shows that the resolution of the digital compass is high and able to produce the digital compass reading in two significant values
The repeatability test is carried out about 20 times to proof that the results are valid to be used in the navigation device
Summary
World Health Organization (WHO) has released the statistics in 2014 that shows 10% of the world’s population have a disability, with 80% of them located in developing countries This global data on visual impairments shows the people with visual impairment globally is around 285 million which 39 million are fully blind and 246 million are having low vision problem[1]. There are great numbers of people worldwide who have encountered vision loss including Malaysia This total figure does not reflect to the real number of a people with disabilities in this world since the visually impaired people are cannot independently travel by themselves. A disability that may involve additional danger to the individual is blindness They rely on a white cane or a guide dog to assist them in reaching the desired destination safely. Difficulties still occur when using the white cane for visually impaired people as they are only able to detect path and obstacles from the front by swinging the white cane at the same time trying to feel the tip of the white cane that touches the ground
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