Patent ID: 6598479
Filing Date: 2003-07-29
Classification: G01H

Abstract:
A vibration sensing apparatus for being attached to a machine, the apparatus having a resonant frequency, said apparatus comprising:a housing having a first end and a second end; a magnet disposed within said housing adjacent the first end and rigidly affixed thereto for magnetically attaching the apparatus to the machine; a vibration sensor disposed within said housing adjacent said magnet for sensing vibration produced by the machine and producing a sensor signal in the form of an electrical charge corresponding to sensed vibration, said vibration sensor being in rigid relation to said magnet and electrically isolated therefrom; a conditioning circuit associated with said housing for conditioning the sensor signal and producing a conditioned sensor signal, said conditioning circuit including: a filter for receiving the sensor signal and attenuating the sensor signal at the resonant frequency of the apparatus, producing a filtered sensor signal in the form of an electrical charge; and a converter for converting the filtered sensor signal from an electrical charge to an electrical voltage for use by a peripheral device; and an output port adjacent the second end of the housing for outputting the conditioned sensor signal to the peripheral device.