Device and method for detecting and controlling an arm position of a railroad crossing gate mechanism
AssigneeSiemens Mobility GmbH
InventorPaul Young
Life of this patent
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Abstract
A crossing gate mechanism includes an electric brushless direct current (BLDC) motor with one or more sensing device(s), a crossing gate arm operated via the BLDC motor, and a controller configured to control the BLDC motor, wherein the controller is configured to control the BLDC motor to raise or lower the crossing gate arm in response to a gate control signal, and wherein the controller includes a Hall state encoder configured to determine a direction of an arm motion based on signals from the one or more sensing device(s).
Claims20
A crossing gate mechanism comprising:
- an electric brushless direct current (BLDC) motor with at least one sensing device,
- a crossing gate arm operated via the BLDC motor, and
- a controller configured to control the BLDC motor,
- wherein the controller is configured to control the BLDC motor to raise or lower the crossing gate arm in response to a gate control signal, and wherein the controller comprises a Hall state encoder configured to determine a direction of an arm motion based on signals from the at least one sensing device.
A method of detecting and controlling an arm position of a railroad crossing gate mechanism, the method comprising:
- receiving Hall effect sensor signals from an electric brushless direct current (BLDC) motor comprising one or more Hall effect sensor(s), and
- determining, by a Hall state encoder, a direction of an arm motion of a crossing gate arm based on the signals from the one or more Hall effect sensor(s).
Dependencies are inferred from the claim text.