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It is essential to maintain social distance and avoid large mob gatherings at one place to break the chain of corona virus infection, but maintaining these things is not that much easy. People knowingly or unknowingly, gather, roam on the streets & break the rules. Hence Keeping an eye on all these activities is not an easy job. The proposed system is an automatic method for controlling crowd in this pandemic situation, where crowd gatherings should be avoided on large basis. We have proposed a system which will keep a watchful eye on crowd gathering with help of RPi camera, as crowd is detected the system will give a alert to authorities that they will take actions against the crowd gatherings and restrict the public from areas where crowds are restricted to be gather. The main aim of the survey is to be found how to avoid unnecessary gatherings where crowd is restricted! and if crowd gathers unnecessarily, system can alert the respective authorities and crowd can be minimized.

This paper represents the study of smart dustbin for efficient waste management. Nowadays, Urbanization has increased tremendously, at the same time there is an increase in waste production. Waste management is a crucial issue to be considered. So we are developing a Smart Dustbin which will sense the position of humans and automatically open the lid of the dustbin to throw garbage. It will monitor the garbage and inform about the levels of garbage collected in the dustbin via sending SMS to the cleaning staff or the supervisor. Once the garbage reaches the threshold level, the ultrasonic sensor will trigger the GSM modem which will continuously alert the cleaning staff and supervisor until the garbage in the dustbin is squashed. Foul smell from the rotten wastes that remain untreated for a long time, due to the negligence of authorities and carelessness of the public may lead to long-term problems. So once these smart bins are implemented on a large scale, waste can be managed efficiently as it avoids unnecessary lumping of wastes on the roadside and keeps the city clean and restricts the spread of diseases through this.