The explosive technological growth that we’ve witnessed over the past few decades has set the stage for the development of smart cities, whose purpose is to empower citizens in urban areas through various services. By sensing the inside and/or outside of various urban spaces, smart cities can help with tasks such as routing, logistics, traffic management, crime prevention, and many more. Recent efforts have focused on the use of multiple indoor LIDAR devices in sensor networks, which can collect real-time 3D data on the position of solid bodies, such as people, vehicles, and robots.
From an article in Tech Xplore Shibaura Institute of Technology.
The capabilities and services provided by a smart city are, however, tightly linked to two major applied fields: sensing and telecommunications. Recent efforts have focused on the use of multiple LIDAR devices in sensor networks, which can collect real-time 3D data on the position of solid bodies, such as people, vehicles, and robots. Despite substantial progress in multi-LIDAR sensor networks for outdoor use, their indoor counterparts still face critical challenges that need to be addressed.
In a study published in IEEE Sensors Journal on 22 June 2023, researchers from Japan sought out an innovative solution to one of the main hurdles to indoor multi-LIDAR networks: operating a large number of sensors while constrained by a limited and fluctuating bandwidth. This study was conducted by Ph.D. student Kuon Akiyama, Kenta Azuma, and Ryoichi Shinkuma from Shibaura Institute of Technology, as well as Jun Shiomi from Osaka University.
To clarify the issue at hand, it helps to know that indoor multi-LIDAR networks typically need a greater number of sensors than outdoor ones. Whereas four or five sensors can suffice in an outdoor setting to cover for blind spots, ten or more sensors are required in indoor networks because their placement is limited by ceilings and other obstacles. Since indoor multi-LIDAR networks also rely on wireless communication between each sensor and a central edge computer, shared bandwidth problems can arise if there are surges in traffic.
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