A fuel cell system that employs surge prevention by electronically mapping the compressor for discharge pressure versus mass airflow. The vessel includes a housing defining a fixed interior volume and an internal structure subdividing the interior volume into a storage chamber and a displacement chamber. Filing the openings by p+ polysilicon contact material, and then an undoped amorphous silicon material, and then a metal material. The cluster-head advertises for nodes to join its cluster, schedules the collection of data within a cluster, and then transmits the data to the base station.