Dynamic sweep angle measurement for fault monitoring of windshield wiper systems
AssigneeRosemount Aerospace Inc.
InventorsAruna Manjunath, Venkata Anil Kumar Mothe, Prashant Vadgaonkar
Life of this patent
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Abstract
A windshield wiper system (WWS) is provided and includes a wiper blade assembly drivable along a first sweep angle, an internal wiper trigger disposed to move with the wiper blade assembly, a measurement system configured to monitor a position of the internal wiper trigger from which a corresponding position of the wiper blade assembly relative to the first sweep angle is measurable and to output a sweep angle feedback signal corresponding to monitoring results and a controller. The controller is receptive of the sweep angle feedback signal.
Claims10
A windshield wiper system (WWS), comprising:
- a wiper blade assembly drivable along a first sweep angle, wherein the wiper blade assembly is configured to move across a windshield of a vehicle and comprises a wiper arm and a wiper blade attached to the wiper arm;
- a mechanical gear train and four bar linkage operably interposed between a motor and the wiper blade assembly to drive the wiper blade assembly;
- an internal wiper trigger coupled to the wiper blade of the wiper blade assembly and disposed to move with the wiper blade assembly along a second sweep angle which is the same as the first sweep angle;
- a measurement system comprising sensors positioned proximate to opposite ends of the second sweep angle and configured to monitor a position of the internal wiper trigger from which a corresponding position of the wiper blade assembly relative to the first sweep angle is measurable and to output a sweep angle feedback signal corresponding to monitoring results;
- and
- a controller receptive of the sweep angle feedback signal.
A windshield wiper system (WWS), comprising:
- a wiper blade assembly drivable along a first sweep angle, wherein the wiper blade assembly is configured to move across a windshield of a vehicle and comprises a wiper arm and a wiper blade attached to the wiper arm;
- a mechanical gear train and four bar linkage operably interposed between a motor and the wiper blade assembly to drive the wiper blade assembly;
- an internal wiper trigger coupled to the wiper blade of the wiper blade assembly and disposed to move with the wiper blade assembly and along a second sweep angle which is the same as the first sweep angle;
- a measurement system comprising sensors positioned proximate to opposite ends of the second sweep angle and configured to monitor a position of the internal wiper trigger relative to the second sweep angle from which a corresponding position of the wiper blade assembly relative to the first sweep angle is measurable and to output a sweep angle feedback signal corresponding to monitoring results;
- and
- a controller receptive of the sweep angle feedback signal.
Dependencies are inferred from the claim text.