Current signature sensor

Details Current signature sensor Current signature sensor

2005-07-12

2005-07-12

Karlsen, Ernest (Department: 2829)

Electricity: measuring and testing

Electromechanical switching device

Relay

C324S546000, C340S644000

Reexamination Certificate

active

06917203

ABSTRACT:
A solenoid health monitoring system uses a signal conditioner and controller assembly in one embodiment that includes analog circuitry and a DSP controller. The analog circuitry provides signal conditioning to the low-level raw signal coming from a signal acquisition assembly. Software running in a DSP analyzes the incoming data (recorded current signature) and determines the state of the solenoid whether it is energized, de-energized, or in a transitioning state. In one embodiment, the software identifies key features in the current signature during the transition phase and is able to determine the “health” of the solenoid.

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