scholarly journals Sole Mate: Safe Path-Finding by Obstacle Detection and Distance Estimation for the Blind

The world has increased its demand for assistive technology (AT). There are a lot of researches and developments going on with respect to AT. Among the AT devices which are being developed, the need for a reliable and less expensive device which serves as an assistance for a visually challenged person is in serious demand all around the world. We, therefore, intend to provide a solution for this by constructing a device that has the capability to detect the obstacles within a given range for a visually challenged person and alerting the person about the obstacles. This involves various components like a camera for image detection, an ultrasonic distance sensor for distance estimation and a vibration motor which works on the principle of Haptic feedback and rotates with varied intensities depending on how far the obstacle is from the user. This paper presents a model which is a part of the footwear of the user and hence, no additional device is required to hold onto for assistance. The model involves the use of a microcontroller, a camera, to dynamically perceive the obstacles and a haptic feedback system to alert the person about the same. The camera dynamically acquires the real time video footage which is further processed by the microcontroller to detect the obstacles. Simultaneously, one more algorithm is being executed to estimate the distance with the help of an ultrasonic distance sensor. Depending on the distance, the frequency of the vibration motor, which acts as the output for notifying the user about the obstacle, is varied (haptic feedback). With this system, a visually challenged person will be able to avoid the obstacles successfully without the use of any additional device.

2020 ◽  
Vol 5 (2) ◽  
pp. 180-184 ◽  
Author(s):  
Xiaoyan Wang ◽  
Yu Chen ◽  
Zixiao Li ◽  
David Wang ◽  
Yongjun Wang

BackgroundThe COVID-19 pandemic has already stressed the healthcare system in the world. Many hospitals have been overwhelmed by the large number of patients with COVID-19. Due to the shortage of equipment and personnel and the highly contagious nature of COVID-19, many other healthcare services are on hold. However, at Beijing Tiantan Hospital, a rapid response system has been in place so that routine care is not interrupted. We, therefore, would like to share our hospital-wide prevention and management policy during this pandemic to help other healthcare systems to function in this crisis.MethodTiantan hospital is one of the leading neuroscience institutions in the world. With 1650 beds, its annual inpatient admission exceeds 30 000 patients. Its COVID-19 rapid response policy was reviewed for its functionality.ResultsThere are nine key components of this policy: an incident management system; a comprehensive infection prevention and control, outpatient triage and flow system; a designated fever clinic; patient screening and administration; optimised surgical operations, enhanced nucleic acid testing; screening of returning employees; and a supervision and feedback system. In addition, a specific protocol was designed for treating patients with acute stroke.ConclusionA comprehensive policy is helpful to protect the employee from infection and to provide quality and uninterrupted care to all who need these, including patients with acute ischaemic stroke.


2015 ◽  
Vol 6 (2) ◽  
pp. 20-33
Author(s):  
Alexander Forde ◽  
Kevin Laubhan ◽  
Kumar Yelamarthi

The lightweight and low-cost 3-dimensional depth sensors have gained much attention in the computer vision and gaming industry. While its performance has been proven successful in the gaming industry, these sensors have not been utilized successfully for assistive devices. Leveraging on this gap, this paper presents the design, implementation, and evaluation of a depth-vision coordinated robust architecture for obstacle detection and haptic feedback system for the blind. The proposed system scans the scene in front, converts it into depth matrix, processes the information, to identify obstacles including physical objects and humans, and provide relevant haptic feedback for navigation of the blind. Through design and evaluation, the proposed system has shown to successfully identify objects and humans, perform real-time distance measurements, and provide a working solution.


Author(s):  
Shiva Kumar K ◽  
Purushothaman M ◽  
Soujanya H ◽  
Jagadeeshwari S

Gastric ulcers or the peptic ulcer is the primary disease that affects the gastrointestinal system. A large extent of the population in the world are suffering from the disease, and the age group of people those who suffer from ulcers are 20-55years. Herbs are known to the human beings that are useful in the treatment of diseases, and there are a lot of scientific investigations that prove the pharmacological activity of herbal drugs. Practitioners have been using the herbal material to treat the ulcers successfully, and the same had been reported scientifically. Numerous publications have been made that proves the antiulcer activity of the plants around the world. The tablets were investigated for the antiulcer activity in two doses 200 and 400mg/kg in albino Wistar rats in the artificial ulcer those are induced by the ethanol. The prepared tablets showed a better activity compared to the standard synthetic drug and the marketed ayurvedic formulation. The tablets showed a dose-dependent activity in ulcer prevention and treatment. Many synthetic drugs are available for the ulcer treatment, and the drugs pose the other problems in the body by showing the side effects and some other reactions. This limits the use of synthetic drugs to treat ulcers effectively. Herbs are known to the human beings that are useful in the treatment of diseases, and there are a lot of scientific investigations that prove the pharmacological activity of herbal drugs.


Author(s):  
A.V. Korchemnaya

Competitiveness of Russia economy under modern conditions demands systemacy of public administration. As a result of creation of national strategic planning system a number of govern-ment programs aimed at the economy development of the Russian Federation and perspective en-trance of the country to the world market is carried out. One of the main tasks of the economy de-velopment is creation of favorable investment climate in the country, investment activity, attraction of investments into the economy of the country’s regions.


Author(s):  
R.E. Fan ◽  
M.O. Culjat ◽  
Chih-Hung King ◽  
M.L. Franco ◽  
R. Boryk ◽  
...  

2019 ◽  
Vol 7 (2) ◽  
pp. 22-32
Author(s):  
Anita Shukla ◽  
◽  
Ankit Jain ◽  

Present work focuses on need of automation in farming by using IOT technology. Automation of farming envisages monitoring and controlling of various parameters which could be helpful in increasing productivity. The proposed system provides a technological solution to the various problems like, maintenance of water requirements, humidity level, maintenance of proper temperature, and proper availability of light for sophisticated plants, fire alert and to keep a check on unwanted entry in the farming lands including timely and sufficient supply of electricity. This hardware provides an effective and efficient solution to the defined problems in Indian farming system by using node MCU Wi-Fi module. Different sensors like humidity sensor, soil moisture sensor, PIR sensor, fire sensor, light sensor and temperature sensor have been used for monitoring and controlling of various problems technologically. In proposed system a Wi-Fi module has been used which automatically informs the farmer about the water requirement, site temperature, humidity and moisture, light, fire alert and about the unwanted occupancy or encroachment by displaying real time data which can be seen and accessed over internet using IOT technology from anywhere in the world. System is equipped with solar panel which provides power backup to the system even in the absence of power supply. We have used five different sensors on three different plants with different environmental conditions and the performances of different sensors are found to be upto the desired expectations.


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