Systems and methods for monitoring orbital shaker health
AssigneeSomaLogic Operating Co., Inc.
InventorsPatrick S. Noonan, Michael Barich, Maarten Rutgers, Jake Bloom, Robert Walder
Life of this patent
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Abstract
Systems and methods for monitoring orbital shaker health include: monitoring orbital shaker health by monitoring input current relative to stall frequency, monitoring orbital shaker health by monitoring back electromagnetic fields (EMF) supplied to the shaker, monitoring orbital shaker health by analyzing video of rotation shafts included within the shaker during orbit, and monitoring orbital shaker health by analyzing accelerometer data.
Claims16
A method for monitoring a health of an orbital shaker, the method comprising:
- varying an input current delivered to a drive motor by applying two or more selected input current values to the drive motor;
- determining a stalling frequency of the drive motor at each selected input current;
- calculating an input current above which a stalling frequency of the drive motor is zero;
- and
- delivering an input current to the drive motor that is greater than the input current above which a stalling frequency of the drive motor is zero.
A method for monitoring a health of an orbital shaker, the method comprising:
- applying an input current to an electric motor of the orbital shaker via a power line;
- monitoring an operational current of the power line by comparing the operational current of the power line to a ground current of a ground line;
- and
- detecting negative current events within the power line by detecting when the operational current drops below the ground current;
- and
- decommissioning the orbital shaker in response to a number of detected negative current events exceeding a designated threshold value;
- wherein the negative current events indicate mechanical hitches during shaker rotation.
A method for monitoring a health of an orbital shaker, the method comprising:
- applying visual identifiers to at least one drive shaft and at least one idler shaft of an orbital shaker;
- tracking rotational positions of each visual identifier;
- calculating angular offsets between the rotational positions of visual identifiers corresponding to the at least one drive shaft and the rotational positions of visual identifiers corresponding to the at least one idler shaft;
- wherein calculating angular offsets between the rotational positions of visual identifiers corresponding to the at least one drive shaft and the rotational positions of visual identifiers corresponding to the at least one idler shaft comprises calculating a best fit ellipse overlaying the rotational positions of each visual identifier;
- and
- in response to the angular offsets of the visual identifiers corresponding to the at least one idler shaft exceeding a threshold angular offset value, decommissioning the orbital shaker.
Dependencies are inferred from the claim text.