Detection of manhole status and alert system using AT MEGA 328

Manholes are essential aspects of a city's infrastructure. Damaged manholes are posing a threat to commuters in city. Some of the damaged manholes can be seen on the busiest roads of the city. Many of them are not properly closed and can cause serious accidents. Fatal accidents caused due to open potholes are upsurging day by day. Passers-by are at a high risk of facing hazards while crossing these manholes that are either damaged or kept open by the sanitation workers. This paper proposes a novel technique of affixing a tilt sensor to the lid of manhole. LCD displays the status of the lid of manhole whether man-hole is open or closed. The gas sensor is also fixed in the manhole, it detects the toxic gases which are coming from the manhole. Neo pixel strip works as an actuator for the gas sensor. Whenever toxic gases are released the neo pixel starts working. The PIR sensor is activated only if the man-hole is open. The sensor is attached to a piezo buzzer which is activated when a human intrigue the sensing area of the sensor, thus serves as a warning to those who seem to carelessly walk over the potholes and might save them from falling into the manhole. This whole set up can be implemented effectively using inexpensive equipment.