Energy efficient electromechanical dislay for gauges
AssigneeGoodrich Corporation
InventorsSivakumar Laguduwa, Aswin Kumar Vallamkondu, Jeffrey Martin Werbelow, Ashish Kumar Agarwal
Life of this patent
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Abstract
A gauge device is provided and includes an analog display to signify a measured valued, a motor and worm gear arrangement which is configured to retain a current state of the analog display when de-energized or to change the analog display when energized and a control system. The control system is configured to normally de-energize the motor and worm gear arrangement and to energize the motor and worm gear arrangement only in accordance with a calculated state of the analog display differing from the current state by at least a threshold level.
Claims20
A gauge device, comprising:
- an analog display to signify a measured valued;
- a motor and worm gear arrangement which is configured to retain a current state of the analog display when de-energized or to change the analog display when energized;
- and
- a control system configured to normally de-energize the motor and worm gear arrangement and to energize the motor and worm gear arrangement only in accordance with a calculated state of the analog display differing from the current state by at least a threshold level.
A gauge device, comprising:
- an analog display to signify a measured value;
- a motor and worm gear arrangement to retain a current state of the analog display when de-energized and to drive a change in the analog display when energized;
- and
- a control system configured to normally maintain the motor and worm gear arrangement in a state in which the motor and worm gear arrangement is de-energized in accordance with a calculated state of the analog display differing from the current state by less than a threshold level and to energize the motor and worm gear arrangement only in accordance with the calculated state differing from the current state by at least the threshold level.
A method of operating a gauge device, the method comprising:
- maintaining a motor and worm gear arrangement in a de-energized state to retain a current state of an analog display to signify a measured value;
- calculating a calculated state of the analog display in accordance with readings of the measured value;
- determining whether a difference between the current and calculated states is above a threshold level;
- energizing the motor and worm gear arrangement to achieve the calculated state only in an event the difference between the current and calculated states is above the threshold level;
- and
- de-energizing the motor and worm gear arrangement once the calculated state is achieved.
Dependencies are inferred from the claim text.