Acoustical warning system
AssigneeFoster-Miller, Inc.
InventorsBasant K. Parida, Abdullatif K. Zaouk, Jason Ross, Grant Stephen Nash
Life of this patent
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Abstract
A locomotive warning system includes an acoustical warning subsystem configured to emit variably directed sound. A controller subsystem is responsive to an initiation command and is configured to trigger the acoustical warning subsystem to begin a sounding sequence when the initiation command is received at a first directivity angle and to continue the sound blast sequence at increasing directivity angles for a pre-establish time and/or distance traveled.
Claims40
A warning system comprising:
- an acoustical warning subsystem configured to emit variably directed sound;
- and
- a controller subsystem responsive to an initiation command and configured to:
- trigger the acoustical warning subsystem to begin a sounding sequence when the initiation command is received at a first directivity angle, and
- continue the sounding sequence at increasing directivity angles for a pre-establish time and/or distance traveled.
A warning subsystem comprising:
- an acoustical warning subsystem configured to emit a variably directed sound;
- a speed determination subsystem for determining speed;
- and
- a controller subsystem responsive to an initiation command and the speed determination subsystem and configured to:
- trigger the acoustical warning subsystem to begin a sounding sequence when the initiation command is received at a first directivity angle,
- calculate a directivity angle rate of change based on speed, and
- continue the sequence at increasing directivity angles based on the calculated directivity rate of change for a pre-established time and/or distance traveled.
A warning method comprising:
- generating an initiation command;
- triggering an acoustical warning subsystem configured to emit variably directed sound to begin a sounding sequence in response to the initiation command at a first directivity angle;
- increasing in the directivity angle;
- and
- continuing the sequence at increasing directivity angles for a pre-established time and/or distance travelled.
A warning method comprising:
- generating an initiation command at a prescribed location;
- triggering an acoustical warning subsystem configured to emit variably directed sound to begin a sounding sequence in response to the initiation command at a first directivity angle;
- increasing the directivity angle;
- and
- continuing the sequence at increasing directivity angles for a pre-established time and/or distance traveled.
A warning method comprising:
- detecting speed;
- calculating a directivity angle rate of change based on a detected speed;
- generating an initiation command;
- triggering an acoustical warning subsystem configured to emit variably directed sound to begin a sounding sequence in response to the generated initiation command at a first directivity angle;
- increasing the directivity angle based on the calculated directivity angle rate of change;
- and
- continuing the sound sequence at increasing directivity angles for a pre-established time and/or distance traveled.
A warning method comprising:
- generating an initiation command at a prescribed distance from an intersection;
- detecting speed;
- calculating a directivity angle rate of change based on the detected speed;
- triggering an acoustical warning subsystem configured to emit variably directed sound to begin a sounding sequence in response to the initiation command at a first directivity angle;
- increasing the directivity angle based on the calculated directivity angle rate of change;
- and
- continuing the sound sequence at increasing directivity angles according to the calculated directivity angle rate of change.
Dependencies are inferred from the claim text.