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Navigation Assist for Poor Visual Visibility

IP.com Disclosure Number: IPCOM000249304D
Publication Date: 2017-Feb-16
Document File: 2 page(s) / 103K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a navigation assist system that uses magnetic paints and a magnetic strip as a source signal and a single wearable device as a receiver. The receiver senses the magnetic signals, and then the navigation system notifies the user of the obstruction and its direction.

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Navigation Assist for Poor Visual Visibility

Navigating in poor visual conditions can be a challenging and potentially dangerous task. Poor visual conditions can be specific to environments in unfamiliar terrains or scenarios such as a power outage. Moreover, people can face similar challenges in good visual conditions, either due to being visually disabled or distractions caused by activities such as texting, playing games, etc. while walking. A system is needed to assist people in times of poor visibility.

Previous approaches use magnetic fields, either with a handheld stick or through different sets of signals such as radio frequency identification (RFID), a Global Positioning System (GPS), images, etc. GPS suffers from inaccuracy in indoor locations and RFID is costly and inefficient (e.g., installation in challenging terrain, maintenance, etc.). Approaches that use handheld sticks and smart phones can seem intuitive from the perspective of visually disabled people; however, those solutions incur dependency on constant proximity to the device and inconvenience to maintain the working state (e.g., smart phones require regular charging).

The novel solution is a convenient navigation assist system that uses magnetic paints and a magnetic strip as a source signal and a single wearable device as a receiver. The receiver senses the magnetic signals, and then the navigation system notifies the user of the obstruction and its direction.

The device is dual-powered, with both solar and battery sources, which extend the activity periods of the device and enable use during greater power outages. For communication, it is equipped with a vibrator and audio panel. The device also provides a wireless interface via Bluetooth*. The magnetic strip/paint can be applied to both indoor and outd...