A plurality of cooperative telemetry systems is disclosed in which each telemetry system comprises a plurality of remote telemetry transmitters to intermittently transmit short duration messages indicative of the status of sensors associated with the remote telemetry transmitters and at least one telemetry...http://www.google.es/patents/US6466138?utm_source=gb-gplus-sharePatente US6466138 - Meshed telemetry system using frequency hopping for intermittent transmission
Meshed telemetry system using frequency hopping for intermittent transmission