RMAD is a reseach project perfomed at the Norwegian Geotechincal Institute (NGI) on behalf of the Norwegian Public Roads Administration. Its purpose is to imporve safety along Norwegian winter roads, prone to impact from snow avalanches. The system uses geophones to detect the ground vibrations assosiated with avalanches, and is combined with traffic lights automatical activated only seconds before an avalanch hit the road.
RMAD is based on a EFM32GG-STK3700 starter kit from Silicon Labs and a LPT5902-IPM SmartmeshIP module from Analog Devices. Rev5B, documented in this project, is a shield to the EFM32GG kit containing INA122 instrumentation amplifiers for the geophone signals and a MCP73811 chip for charging lithium-ion batteries from miniature solar panels. A larger shield with more features and functionality is presented in the Realtime Microseismic Avalanch Detection rev4 project.
Software and sourcecode for both the EFM32 processor and the system backend is avalible on Github
Resistors R198 and R246 as well as capacitors C199 need to be removed from the EFM32GG-STK3700 starter kit board