Back to results
US 10,518,896 B2Granted
Apparatus and method for detecting stall condition
AssigneeHoneywell International Inc.
InventorsJason Garde, Grant Lodden, Xiao Zhu Fan, Matthew Wiebold
Life of this patent
Estimating the term…
Abstract
In one embodiment, a method of determining the onset of a stall condition in a vehicle is provided. The method comprises: measuring, with a stall detection system, data which would indicate the presence of turbulent fluid flowing proximate to a foil; determining from the data whether an onset of a stall condition has occurred; and upon determining the onset of the stall condition, performing at least one of: issuing an alert, and causing the vehicle to avoid or exit the stall condition, and cease such activity when the onset of the stall condition no longer exists.
Claims16
An apparatus, comprising:
- a stall detection system comprising an optical system coupled to a processing circuit;
- wherein the optical system comprises:
- an optical transceiver;
- wherein the optical transceiver is configured to emit at least one light beam;
- optics optically coupled to the optical transceiver;
- wherein the optics is configured to direct the at least one light beam;
- and
- wherein the optical transceiver is configured to detect backscattered light of the at least one light beam;
- wherein the stall detection system is configured to detect an onset of a stall condition of a foil of a vehicle in at least one measurement region over the foil by characterizing a fluid flowing in the at least one measurement region over the foil by characterizing the backscattered light from the at least one measurement region;
- wherein the detection of the onset of the stall condition in the at least one measurement region is determined based upon at least one of:
- a Doppler shift in the frequency of the backscatter of the light beam, and an increase in signal variation;
- and
- wherein, upon detecting the onset of the stall condition, the processing circuit is configured to perform at least one of:
- generating an alert, and causing an automatic pilot to cause the vehicle to avoid or exit the stall condition.
11 more elements
A method of determining a vehicle, comprising:
- transmitting at least one light beam;
- measuring data which would indicate the presence of turbulent fluid flowing in at least one measurement region the foil of the vehicle, by characterizing backscattered light from the at least one measurement region and of the at least one light beam;
- determining from the data whether the onset of the stall condition of the foil in the at least one measurement region over the foil has occurred;
- wherein the onset of the stall condition in the at least one measurement region is determined based upon at least one of:
- a Doppler shift in the frequency of the backscatter of the light beam, and an increase in signal variation;
- and
- upon determining the onset of the stall condition, performing at least one of:
- issuing an alert, and causing the vehicle to avoid or exit the stall condition, and cease such activity when the onset of the stall condition no longer exists.
5 more elements
A system, comprising:
- a vehicle including at least one foil;
- a stall detection system, comprising an optical system coupled to a processing circuit, configured to detect an onset of a stall condition of a foil of a vehicle in at least one measurement region over the foil by characterizing a fluid flowing in the at least one measurement region over the foil by characterizing the backscattered light from the at least one measurement region;
- wherein detection of the onset of a stall in the measurement region is determined based upon at least one of:
- a Doppler shift in the frequency of the backscatter of the light beam, and an increase in signal variation;
- wherein, upon the stall detection system detecting the onset of a stall, the processing circuitry is configured to perform at least one of:
- generating an alert, and causing the vehicle to avoid or exit the stall condition;
- and
- wherein the stall detection system comprises:
- an optical transceiver;
- wherein the optical transceiver is configured to emit at least one light beam;
- optics optically coupled to the optical transceiver;
- and
- wherein the optics is configured to direct the at least one light beam.
10 more elements
Dependencies are inferred from the claim text.