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Proceedings ArticleDOI

An electronic walking stick for blinds

01 Feb 2014-pp 1-5
TL;DR: The main aim of this paper is to contribute knowledge and services to the people of blind and disable society by providing more convenient means of life to the blind person.
Abstract: Independence is the building methodology in achieving dreams, goals and objectives in life. Visually impaired persons find themselves challenging to go out independently. There are millions of visually impaired or blind people in this world who are always in need of helping hands. For many years the white cane became a well-known attribute to blind person's navigation and later efforts have been made to improve the cane by adding remote sensor. Blind people have big problem when they walk on the street or stairs using white cane, but they have sharp haptic sensitivity. The electronic walking stick will help the blind person by providing more convenient means of life. The main aim of this paper is to contribute our knowledge and services to the people of blind and disable society.
Citations
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Journal ArticleDOI
TL;DR: A multi-sensor obstacle detection system for a smart cane is proposed via a model-based state-feedback control strategy to regulate the detection angle of the sensors and minimize the false alerts to the user.
Abstract: Smart canes are usually developed to alert visually challenged users of any obstacles beyond the canes’ physical lengths. The accuracy of the sensors and their actuators’ positions are equally crucial to estimate the locations of the obstacles with respect to the users so as to ensure only correct signals are sent through the associated audio or tactile feedbacks. For implementations with low-cost sensors, however, the users are very likely to get false alerts due to the effects from noise and their erratic readings, and the performance degradation will be more noticeable when the positional fluctuations of the actuators get amplified. In this paper, a multi-sensor obstacle detection system for a smart cane is proposed via a model-based state-feedback control strategy to regulate the detection angle of the sensors and minimize the false alerts to the user. In this approach, the overall system is first restructured into a suitable state-space model, and a linear quadratic regulator (LQR)-based controller is then synthesized to further optimize the actuator’s control actions while ensuring its position tracking. We also integrate dynamic feedback compensators into the design to increase the accuracy of the user alerts. The performance of the resulting feedback system was evaluated via a series of real-time experiments, and we showed that the proposed method provides significant improvements over conventional methods in terms of error reductions.

27 citations


Cites background from "An electronic walking stick for bli..."

  • ...Integration of multiples sensors on a single platform to overcome the limitations of individual sensors has become increasingly popular in recent years [4], [12]–[17]....

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  • ...Combinations of multiple ultrasonic and other sensors have been reported in a series of papers [13], [15], [17], [18] to accommodate a wider range of obstacles and sensing area....

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Proceedings ArticleDOI
01 Apr 2018
TL;DR: The aim of this paper is to provide a tool which will help blind people to navigate as well as sense the obstacles which is Walking Stick with in-built ultrasonic sensor with a micro controller system.
Abstract: Blind people face many difficulties to interact with their nearby environment. The aim of this paper is to provide a tool which will help blind people to navigate as well as sense the obstacles. We plan to propose a working model which is Walking Stick with in-built ultrasonic sensor with a micro controller system. The ultrasonic sensor is used to detect obstacles using ultrasonic waves. On sensing obstacles the sensor passes the data to the microcontroller. The microcontroller then processes the data and calculates if obstacle is close enough. If obstacle is not close enough the circuit does nothing. If obstacle is close then microcontroller sends Alert signal to the blind person. In addition we also plan to embed e-SOS (electronic Save Our Souls) system. Whenever blind person feels any discomfort while navigating then he presses an e-SOS distress call button on the stick to give a video call to his family member. The video is streamed in an Android mobile via Android application. The Android application also shows the location of the blind person to his family member. In this way, Blind person is guided to move along the path by his family member via the Android Mobile Application.

17 citations

Proceedings ArticleDOI
01 Feb 2018
TL;DR: A small hand-carrying system which can be used as a substitute of the walking stick which will work based on ultrasonic sensors and GPRS module which will be able to detect obstacles, manholes and potholes and by pressing a button user will be can to SMS user’s location to user's close ones.
Abstract: Blindness is the inability to see due to any neurological or physical condition. Blind people find it really hard to walk through busy roads and travel new places and so the walking stick becomes their daily companion. The main objective of this paper is to introduce a small hand-carrying system which can be used as a substitute of the walking stick. This system will work based on ultrasonic sensors and GPRS module which will be able to detect obstacles, manholes and potholes; and by pressing a button user will be able to SMS user’s location to user’s close ones. This will make moving around easier and safer for the blind people without getting noticed or without taking help of others.

15 citations


Cites background from "An electronic walking stick for bli..."

  • ...Unlike the Sonic Path Finder, it can provide the accurate position of an obstacle using the ultrasound and laser sensors....

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  • ...Another system known as Sonic Path Finder [12] works based on ultrasound transmission and reception but it is not a hand held system, it fits on the head of the user....

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Proceedings ArticleDOI
20 May 2016
TL;DR: A simple, cheap, friendly user, smart stick will be designed and implemented to improve the mobility of both blind and visually impaired people in a specific area to prevent any possible accident.
Abstract: Blindness is a state of lacking the visual perception due to physiological or neurological factors. In this proposed work, a simple, cheap, friendly user, smart stick will be designed and implemented to improve the mobility of both blind and visually impaired people in a specific area. This multipurpose model is designed to help the blind person to navigate alone safely and to avoid any obstacles that may be encountered, whether fixed or mobile, to prevent any possible accident. The device provides voice output giving direction to the blind Using RFID technology, the destination of the bus is detected and voice announcement is given regarding the destination of the bus. The location of stick is added advantage to the current multipurpose device. Using RFID technology the location of the stick is achieved. The blind is provided with a push button to locate the stick.

15 citations


Cites background from "An electronic walking stick for bli..."

  • ...Over half of the legally blind people in the world are unemployed [4]....

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Proceedings ArticleDOI
01 Jan 2018
TL;DR: The SWSVIP-Smart Walking Stick for the Visually Impaired People uses Low Latency Communication and the implantation of GPS in the stick gives the real-time monitoring of the impaired person, using a mobile application software connected to it, by their emergency contact.
Abstract: One of the main challenges for the visually impaired people is that they need support from other people, traditional white canes or dogs while they are walking along the road, footpath, bedrooms, kitchen and much more. So in this paper, we purpose the SWSVIP-Smart Walking Stick for the Visually Impaired People using Low Latency Communication. Various new features of our implementation are as follows. First, we achieved the low latency communication for transferring the data by proposing new algorithms. Second, we can detect the obstacle within the range of 5 meters using the ultrasonic sensors. Using their enhanced capabilities to use other senses, we provide different alerts for the obstacles within the different range which would help them draw a picture of their surrounding area within their mind. Third, the power saving capability of the designed stick is high which in turn acts as a cost-effective solution and reduces the burden to change batteries and charge them very occasionally. Moreover, the implantation of GPS in the stick gives the real-time monitoring of the impaired person, using a mobile application software connected to it, by their emergency contact. The experimental results are obtained by real time monitoring of the visually impaired people in the blind school.

12 citations


Cites methods from "An electronic walking stick for bli..."

  • ...Different to the work done in [2]–[11], this paper is different and provides the novel approach for blind people by using the SWSVIP–Smart Walking Stick for the Visually Impaired People using the low latency communication....

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  • ...Moreover, another paper [11] propose the use of electronic walking stick but they also do not use the GPS in their design....

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References
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Proceedings ArticleDOI
20 Apr 1997
TL;DR: The GuideCane, a novel device designed to help blind or visually impaired travellers to navigate safely and quickly among obstacles and other hazards faced by blind pedestrians, is introduced.
Abstract: This paper introduces the GuideCane, a novel device designed to help blind or visually impaired travellers to navigate safely and quickly among obstacles and other hazards faced by blind pedestrians. The GuideCane, currently under development at the University of Michigan's Mobile Robotics Lab, comprises of a long handle and a "sensor head" unit that is attached at the distal end of the handle. The sensor head is mounted on a steerable but unpowered two-wheeled steering axle. During operation, the user pushes the lightweight GuideCane ahead of him/her. Ultrasonic sensors mounted on the sensor head detect obstacles and steer the device around it. The user feels the steering command as a very noticeable physical force through the handle and is able to follow the GuideCane's path easily and without any conscious effort.

303 citations


"An electronic walking stick for bli..." refers background in this paper

  • ...Visually impaired persons find themselves challenging to go out independently....

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  • ...However, it does not provide the accurate path and the position of an obstacle [5]-[6]....

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  • ...It was introduced in 1973 by Benjamin [6]....

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  • ...It is a commercially available hand-held ultrasonic-based device that informs the user of the distance to detected objects by means of tactile vibrations [5]-[6]....

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  • ...But, in general, it is relatively large and heavy....

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Journal ArticleDOI
TL;DR: In this article, an ultrasonic sensor that is able to measure the distance from the ground of selected points of a motor vehicle is described, which is based on the measurement of the time of flight of a ultrasonic pulse which is reflected by the ground.
Abstract: This paper describes an ultrasonic sensor that is able to measure the distance from the ground of selected points of a motor vehicle. The sensor is based on the measurement of the time of flight of an ultrasonic pulse, which is reflected by the ground. A constrained optimization technique is employed to obtain reflected pulses that are easily detectable by means of a threshold comparator. Such a technique, which takes the frequency response of the ultrasonic transducers into account, allows a sub-wavelength detection to be obtained. Experimental tests, performed with a 40 kHz piezoelectric-transducer based sensor, showed a standard uncertainty of 1 mm at rest or at low speeds; the sensor still works at speeds of up to 30 m/s, although at higher uncertainty. The sensor is composed of only low cost components, thus being apt for first car equipment in many cases, and is able to self-adapt to different conditions in order to give the best results.

298 citations

Journal ArticleDOI
TL;DR: A new IR sensor based on the light intensity back-scattered from objects and able to measure distances of up to 1 m is described and the expected errors in distance estimates are analysed and modelled.

260 citations


"An electronic walking stick for bli..." refers methods in this paper

  • ...ATmega328 is a micro arduino board which is an o platform based on Atm development environment board....

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Journal ArticleDOI
TL;DR: Two main problems to be solved in designing truly effective mobility aids for the blind are to determine what kinds and how many pieces of information are necessary and/or sufficient to mobilize humans, and to establish the optimal coding and display method of the acquired information.
Abstract: Two main problems to be solved in designing truly effective mobility aids for the blind are: 1) to determine what kinds and how many pieces of information are necessary and/or sufficient to mobilize humans, and 2) to establish the optimal coding and display method of the acquired information.

117 citations


"An electronic walking stick for bli..." refers methods in this paper

  • ...It uses the artificial intelligence, unlike in the sonic pathfinder [14]....

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Posted Content
TL;DR: This study found that the Smart Cane functions well as intended, in alerting users about the obstacles in front.
Abstract: This paper reports on a study that helps visually-impaired people to walk more confidently T he study hypothesizes that a smart cane that alerts visually-impaired people over obstacles in front could help them in walking with less accident T he aim of the paper is to address the development work of a cane that could communicate with the users through voice alert and vibration, which is named Smart Cane T he development work involves coding and physical installation A series of tests have been carried out on the smart cane and the results are discussed This study found that the Smart Cane functions well as intended, in alerting users about the obstacles in front

101 citations


"An electronic walking stick for bli..." refers background in this paper

  • ...For Communication purposes it has a number of facilities for communicating with a computer, or with other microcontrollers....

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