A wireless landing gear monitoring system for an aircraft. The monitoring system
includes a wireless, e.g. radio frequency (RF), hubcap transceiver powered by a
rechargeable battery combined with a super-capacitor, all mounted to an inside
surface of a wheel hubcap of the aircraft. Additionally, the system includes a
permanent magnet generator (PMG) mounted to the inside surface of the hubcap that
charges the battery when the wheel is rotating. The hubcap transceiver communicates
with at least one distant, or remote, transceiver inside the aircraft, a tire pressure
sensor mounted to a wheel rim, and a Hall-effect wheel speed transducer mounted
to the hubcap. The tire pressure sensor uses an extremely low power wireless transmitter
to communicate with the hubcap transceiver, which then sends wheel speed and tire
pressure data to the distant transceiver.
