Mr _xDx

     INTRODUCTION   Manholes and sewer wells in urban areas are used to conduct rainwater, drainage, power cables, telecommunication cables, and other things. They are usually covered with a metal-made cover to keep things from dropping into the well. However, if the cover is removed by someone or broken caused by some uncertain factors, it is dangerous to the moving cars and pedestrians. Therefore, efficient and cost-effective means and methods that can monitor potential disasters on the road are urgently in demand. Detecting and monitoring manhole and sewer well covers is greatly important to the transportation infrastructure management department; and it provides a promising and essential way to prevent potential disasters on the road.   An integral part of any drainage system is the access points into it when it comes to cleaning, clearing, and inspection. Metropolitan cities have adopted underground drainage system and the city’s municipal corporation must ...