Our unique system architecture for a WSN-based NDT solution builds upon our wireless sensor network
platform, called Sprouts [3], which is described in section 3.2. Sprouts is a modular WSN platform that allows up to
four custom modules to be externally attached and automatically detected. Modules communicate with Sprouts
using plug-and-play (PnP) protocol over a standard serial peripheral interface (SPI) bus. Our unique NDT solution is
designed in the form of an external module, which is described in section 3.1.
3.1. NDT-Module System Architecture
Our NDT-module is low cost, low power, reconfigurable, and reliable solution to monitor the thickness of
materials, structures, or equipments while in operation. The NDT-module works in conjunction with our Sprouts
platform as an attachable external module to one of four module-ports. The NDT-module communicates with
Sprouts via custom designed PnP protocol over a standard SPI-bus. The system architecture of the NDT-module is
depicted in Figure 2.