A system and method for monitoring operating parameters of a machine (such as a vehicle) and producing diagnostic and/or prognostic results are disclosed. Active, semi-active, or semi-passive sensors are wirelessly linked with an interrogator that selectively interrogates the sensors, such as through...http://www.google.de/patents/US6941202?utm_source=gb-gplus-sharePatent US6941202 - Diagnostics/prognostics using wireless links