Patent ID: 8035498

Claim:
An apparatus for a wireless monitoring system, said apparatus comprising: at least one transmitting unit including an inductor responsive to a magnetic field from a magnet attached to a moving component, a storage unit connected to said inductor, said storage unit storing energy generated from an interaction between said inductor and said magnet, a transmitter powered by said storage unit, and a sensor responsive to said magnet, said magnet causing said sensor to provide a trigger signal to said transmitter when said magnet is proximate said sensor, said trigger signal causing said transmitter to transmit a signal wirelessly, said transmitter receiving power from said storage unit to transmit said signal, said signal including a series of pulses with each pulse corresponding to when said magnet is positioned proximate to said sensor; and a receiving unit including a receiver responsive to said signal from said transmitter, a unit for decoding said signal received by said receiver, said unit determining a time value equal to a time difference between two successive signals from said transmitter, and a display unit for displaying a parameter value associated with said moving component, said parameter value related to said time value.