Gateways
The tiers of the network are connected by devices that act as gateways between adjacent layers.
“AlarmGate” Backbone
AlarmGate software components.
A backbone network of “AlarmGate” gateways connects traditional systems, such as PDAs, PCs, and databases, to the emplaced sensor network. It also connects discontiguous sensor nodes by a high-speed relay for efficient routing.
AlarmGate nodes possess more storage and computation facilities than sensor nodes (they run on Stargate Netbridge devices), and provide query processing, security, privacy, and location services. These services are depicted at right. The backbone may communicate wirelessly or may overlay onto existing wired infrastructure.
BlueGate
Bluetooth gateway board.
We have developed the BlueGate, an add-on board for MicaZ motes shown to the right. It provides the mote’s microprocessor with a UART interface to a bluetooth transceiver. This enables a body network to communicate with other commercially available sensor devices, as well as communicate with a resident’s cell phone for emergency response.