Wireless network of autonomous environmental sensors

A wireless network based on macro-scale sensor modules (originally 45x35x30mm, currently 14x14x18mm with integrated coplanar antenna) has been demonstrated. The modules can extract their energy from the environment (e.g. with solar cells), and detect various environmental parameters. The network can be configured as a multi-hop “web ” of sensors which builds itself automatically accord-ing to configurable optimization parameters, or as a “star ” topology, where each sensor module transmits in-formation directly to the base station. Average power con-sumption for each complete module is approx. 100 µW. This ability for drastic miniaturization and the simultane-ous addition of power autonomy while maintaining modu-larity and reusability contrast to existing work where wire-less environmental sensor systems were at least one order of magnitude larger in volume or consisted of application-specific systems-on-a-chip