Low-Cost Social Distancing Alerting Wrist Band Device

Covid-19 pandemic is ravaging the world and humankind is facing one of the toughest challenges of this century. The main requirement is to stay safe. According to the Covid-19 protocol, a healthy person who is adjacent to an infected person for more than 15 minutes has a very high chance to get infected. Body temperature more than the normal temperature is one of the symptoms of the symbiotic Covid-19 infected person. This paper presents an idea to design a low-cost affordable wrist band that alerts the user if a person with higher body temperature is in his/her proximity. A simple component like thermopile temperature sensor, amplifier, monostable multivibrator, and LEDs are used to design this wrist band. The paper discusses the outline circuit to achieve this, which can be used by all people.