Self powered wireless system

摘要

Apparatus for a self-powered wireless transmitter system. One such system includes an inductor, a delay circuit, and a transmitter with an antenna. The magnet interacting with the inductor generates both power and a trigger signal. The inductor generates sufficient power for the transmitter to transmit a wireless signal corresponding to when the magnet interacts with the inductor. Precise timing is insured by the inductor being connected to the trigger input of the transmitter unit and the delay circuit adding a short delay to the signal from the inductor with the delayed signal connected to the supply voltage connection of the transmitter. The transmitter transmits the wireless signal upon being energized through the delay circuit.

主权项

1. An apparatus for monitoring a parameter corresponding to a moving component, said apparatus comprising:
a transmitter having a trigger input, a supply voltage input, a ground, and an output, said transmitter configured to provide a wireless signal based on said trigger input; an inductor connected between said trigger input and said ground of said transmitter, said inductor responsive to a magnetic field moving relative to said inductor; and a delay circuit connected between said ground and said supply voltage input of said transmitter, said delay circuit adding a delay to a signal applied to said supply voltage input whereby said supply voltage input reaches a minimum required operating voltage level after said trigger input reaches a minimum required trigger voltage level, wherein when said magnetic field interacts with said inductor, said inductor generates power for said transmitter and triggers said transmitter.