Science & Tech Current Affairs

Science & Technology Current Affairs 2019-2020 category comprises current affairs with all important national / international updates in science and tech and events for the year 2019-2020 for UPSC, States, Civil services, SSC and other competitive examinations of India and States.

Captain Arjun: The Robot launched by Railway Protection Force

The Railway Protection Force recently launched a Robot called “Captain Arjun”. ARJUN is Always be Responsible and Just Use to be Nice.


The robot Captain Arjun was launched to intensify screening and surveillance at the railway stations. It was launched by the Railway Protection Force operating under Central Railways

About the robot

The robot will screen the passengers while they board the trains. It will also keep a watch on anti-social elements. The robot can be deployed for multiple uses and is an effective element that will operate under the station access controls. Captain Arjun will also increase the security plans of the railway stations.

The robot is equipped with PTZ camera, motion sensor and one Dome camera. The cameras installed in the robot uses Artificial Intelligence algorithms to track antisocial activities and suspicious activities.

Also, the robot has an inbuilt motion activated spot light, siren and internal storage to record data during network failures. The robot does thermal screening and also record the temperature of the passengers. It also displays the recorded temperature on a digital display.

IIT Kharagpur: AI Based Social-Distancing Monitor

The Researchers of IIT Kharagpur have developed an Artificial Intelligence based cyber-physical system to monitor social distancing in public places.


The device developed by the researchers will play a proximity alert whenever there is a violation of social distancing norms. The device captures field view and computes distances according to the criteria set by the Ministry of Health and Family Welfare.

The researchers of the institute have designed the device using inexpensive and easily accessible hardware materials.

Social Distancing

The social distancing is non-pharmaceutical prevention of an infection. This is done by decreasing contact between the persons that are infected by the disease-causing pathogen. According to WHO, when someone has COVID-19, the minimum physical distance to stay away from him is 1 metre. The same norms are followed in India as well.

Some countries follow 2 metres of social distancing and some others follow 1.5 metres. UK follows 2 metre distancing and Australia follows 1.5 metres.