Kerala students develop low-cost self-driving wheelchair with Robotic OS
Coimbatore, July 4: Student researchers from the Amrita Vishwa Vidyapeetham here, have developed a low-cost self-driving wheelchair that works on Robotic Operating System (ROS) and can be navigated using a smartphone app.
Named "Self-E", the revolutionary wheelchair uses ROS to create a map of the surrounding space, along with static and dynamic obstacles, using a laser sensor and displays it through a smartphone app.
The user can then touch any point on the generated map and the wheelchair will drive to that place automatically without user intervention.
"The unique Self-E self-driving wheelchair now needs to be tested in different environments like hospitals and airports with patients and wheelchair users. We hope to commercialize the product," said Rajesh Kannan Megalingam, Assistant Professor at the varsity.
Self-E works by mapping the surrounding environment, including dynamic and static obstacles such as people, walls, pillars, tables, chairs, etc. using a laser sensor called LiDAR.
The map is automatically loaded onto an Android smartphone or tablet through a specially developed app.
Self-E's autonomous operation allows users to relax and sip a cup of coffee, read a newspaper or chat with friends as the wheelchair takes them to the desired destination point on its own.
"Users can have complete control over the wheelchair without anyone's help. On the other hand, if some patients have a problem in using a smartphone, a friend or family member or assistant can use the Android app to transport them without the need to physically push the wheelchair." said Chinta Ravi Teja, a student at the varsity.
Teja, along with Sarath Sreekanth and Akhil Raj have developed the Self-E wheelchair.
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13 lakh litres of 'Rail Neer' supplied to train passengers daily: Government
New Delhi (PTI): Approximately 13 lakh litres of packaged drinking water -- 'Rail Neer' -- are being supplied to train passengers across the railway network daily, the government informed the Lok Sabha in a written reply on Wednesday.
Apprising the Lower House about the Indian Railways' endeavour to provide safe and potable drinking water facilities at all stations, the government also provided zone-wise details of the water vending machines (WVMs) installed there.
"To ensure the quality of drinking water being made available at the railway stations, instructions exist for periodical checking and required corrective action to be taken.
"Regular inspection and maintenance of drinking water facilities is carried out and complaints are attended to promptly," Railway Minister Ashwini Vaishnaw said while responding to a question raised by BJP MP Anup Sanjay Dhotre seeking to know the supply of drinking water at railway stations across the country
"Complaints regarding deficiency in services, including water supply, are received through various channels such as public complaints, web portals, social media, etc. These complaints are received at various levels, including the Railway Board, zonal railways, division office, etc.," Vaishnaw said.
"The complaints so received are forwarded to the concerned wings of Railways and necessary action is taken to check and address them. As receipt of such complaints and action taken thereon is a continuous and dynamic process, a centralised compendium of these is not maintained," he added.
Providing zone-wise details of water vending machines, the minister said 954 such machines have been installed across railway stations.
"The Indian Railways also provides safe and affordable packaged drinking water bottles -- Rail Neer -- approved by the Bureau of Indian Standards (BIS) in trains and at stations," Vaishnaw said.
"Approximately, 13 lakh litres of Rail Neer are being supplied per day to the travelling passengers in trains and at stations across the Indian Railways network," he added.
