Gauge display system
First Claim
Patent Images
1. A gauge system comprising:
- a sensor that produces a sensor signal as a function of a sensed parameter;
a motor;
a gauge having a scale and a movable indication needle that is driven by the motor and displays a calculated value of the sensed parameter based upon position of the needle relative to the scale;
a position sensor that produces a position feedback signal representative of a sensed position of the needle;
a controller that provides drive commands to the motor based on the sensor signal and the position feedback signal; and
a status indicator, responsive to the controller, which indicates whether the position feedback signal and the calculated value are in alignment so that the calculated value displayed by the gauge is within a predetermined tolerance of precision based upon a comparison by the controller of the position feedback signal and the sensor signal.
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Abstract
A gauge system comprises a sensor that produces a sensor signal as a function of a sensed parameter. The gauge system also comprises a motor and a gauge having a scale and a movable indication needle that is driven by the motor and displays a measurement value of the sensed parameter based upon position of the needle relative to the scale. The gauge system further includes a position sensor that produces a position feedback signal representative of a sensed position of the needle and a controller that provides drive commands to the motor based on the sensor signal and the position feedback signal.
38 Citations
18 Claims
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1. A gauge system comprising:
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a sensor that produces a sensor signal as a function of a sensed parameter; a motor; a gauge having a scale and a movable indication needle that is driven by the motor and displays a calculated value of the sensed parameter based upon position of the needle relative to the scale; a position sensor that produces a position feedback signal representative of a sensed position of the needle; a controller that provides drive commands to the motor based on the sensor signal and the position feedback signal; and a status indicator, responsive to the controller, which indicates whether the position feedback signal and the calculated value are in alignment so that the calculated value displayed by the gauge is within a predetermined tolerance of precision based upon a comparison by the controller of the position feedback signal and the sensor signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A gauge system comprising:
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a plurality of sensors that produce sensor signals as a function of sensed parameters; a gauge assembly comprising; a motor; a gauge having a scale and a movable indication needle that is driven by the motor and displays a calculated value of the sensed parameter based upon position of the needle relative to the scale; and a position sensor that produces a position feedback signal based upon sensed position of the needle; a controller that provides drive commands to the motor of the gauge assembly based on the sensor signal and the position feedback signal; and status indicators, responsive to the controller, which indicate whether the sensor signal and the feedback signal are in alignment so that the calculated value displayed by the gauge is within a predetermined tolerance of precision. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for displaying a measurement on a gauge having a scale and a movable needle, the method comprising:
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producing a sensor signal representative of a sensed parameter; producing a calculated value as a function of the sensor signal; displaying a measurement of the sensed parameter based on position of the needle relative to a scale; producing a position feedback signal representative of a sensed position of the needle; driving a motor to move the needle based upon the calculated value and the position feedback signal; comparing the position feedback signal and the calculated value; and providing a status indication, based upon the comparing, of whether the position feedback signal and the calculated value displayed by the gauge is within a predetermined tolerance of precision.
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Specification