The seven-day Festival of Innovation was inaugurated by President Pranab Mukherjee and features 65 grassroots innovations in the exhibition.
The fest is being organised by Rashtrapati Bhawan in collaboration with the National Innovation Foundation.
The event will witness a number of exhibitions, roundtable discussions on different topics related to innovations with national and international participation, a talk by Nobel laureate Kailash Satyarthi; Gandhian Young Technological Innovation (GYTI) Awards and Visitor's Awards to central universities, including in the field of innovation.
The Best University will receive a citation and trophy while winners of Visitors Award for Innovation and Research will receive a citation and cash award of Rs one lakh.
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The alert switch, aimed to aid safety for women in autorickshaws and buses, has been made by 19-year-old Satiya, a BA student from Surendranagar in Gujarat.
"Women's safety is a big concern nowadays so I wanted to make a switch which will send signals to the nearby police station. Then the vehicle number and the location will get available to the police," said Satiya, who was present at the exhibition along with her brother Mehul.
"The governor of Gujarat praised the innovation and said it should be implemented in the state. We are hoping to find buyers soon," Mehul said.
Satiya added she is glad to have completed this project as she always had interest in Science but because of her dream to become a deputy collector, she could not take up the subject in her graduation.
The tractor-operated machine digs and uproots the
groundnut plant, which is passed over a conveyor. The digger has a fuel capacity of 1.5 acre per hour and Patel said it can reduce cost of harvesting to about 50 per cent of manual harvesting.
In 1998, Arvindbhai Patel conceptualised a natural water cooler, which would not need electricity to run. In 2003, he lost his memory in an accident and since then his son Jaymeen Patel has taken over.
"The water-cooler runs on copper tubes. It does not need electricity. The one in the market has the capacity of 120 litres and costs around Rs 55,000. I am planning to bring a 20 litre capacity cooler in some time. That should cost about Rs 20,000. It kills bacteria too," Jaymeen said.
The exhibition will remain open between 10 am and 5 pm till March 19 for the public. All visitors to the Mughal Gardens will be able to visit the exhibition.