Documentation, firmware and hardware specification | Cooperative development: InES, ZHAW Winterthur & Eawag, Dübendorf (Switzerland)
Although emerging low-power wireless communication techniques allow efficient data transfers with great above-ground performance, for underground or indoor applications a large coverage range is difficult to achieve due to physical and topological limitations. This repository provides detailed information on a novel LPWAN concept that i) enhances transmission reliability, efficiency and flexibility in range-critical situations through meshed multi-hop routing, and ii) ensures a precise time-synchronization through optional GPS or DCF77 long-wave time signaling.
https://ieeexplore.ieee.org/document/8703036
Find i) the assembly of the material used, ii) the drawings for sensor node chassis, and iii) PCB related material here.
Concept-specific firmware is provided here.
Institutional project website -> www.eawag.ch/sewerlpwan
Related project(s): Urban Water Observatory -> www.eawag.ch/uwo