Vehicular anticipatory sensor system
First Claim
1. A vehicle including a system to prevent collisions between the vehicle and different objects in a path of the vehicle, comprising:
- a laser radar system arranged on the vehicle and configured to direct laser beams outward from the vehicle, said laser radar system receiving, in a first operating stage, laser beams that have been reflected from objects in the paths of the outward directed laser beams, said laser radar system being configured to generate the laser beams in an eye-safe portion of the electromagnetic spectrum at a wavelength above 1.4 microns and comprising a high-powered laser radar;
a processor coupled to said laser radar system and configured to receive signals derived from the laser beams received in the first operating stage and process the signals to determine a distance between said laser radar system and each of the objects from which the received laser beams have been reflected in the first operating stage;
an imaging receiver for receiving laser beams that have been reflected from any of the objects in the paths of the laser beams directed outward from said laser radar system and creating images from the received laser beams,said processor being further configured to determine a plurality of range gates to apply at different times, in a second operating stage, to said imaging receiver such that when each of the range gates is applied to said imaging receiver, an image is created from only laser beams received from objects in that range gate,each of the range gates being determined for a respective one of the objects from which the laser beams received in the first operating stage have been reflected based on the determined distance between said laser radar system and the respective one of the objects from which the laser beams received in the first operating stage have been reflected such that said imaging receiver is thus configured to receive reflections of laser beams directed outward from said laser radar system in the second operating stage only from the respective one of the objects from which the laser beams received in the first operating stage have been reflected and any other objects in the same range gate;
anda reactive system coupled to said processor, said processor being configured to control said reactive system to selectively indicate the presence of any of the objects from which the received laser beams have been reflected.
1 Assignment
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Accused Products
Abstract
System and method for preventing collisions between a vehicle and objects in a path of the vehicle includes a laser system arranged to direct at least one laser beam outward therefrom and which is in an eye-safe portion of the electromagnetic spectrum, an imaging receiver for receiving at least one laser beam reflected from objects in the path of the laser beam, a processor coupled to the receiver and arranged to receive signals derived from the received laser beam and process the signals to determine a distance between the laser system and the objects from which the laser beam has been reflected, and one or more reactive systems coupled to the processor. The processor controls the reactive system to indicate the presence of objects at specific distances from the vehicle. This indication may be used to take preventive action to avoid the collision, either manually or automatically.
40 Citations
26 Claims
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1. A vehicle including a system to prevent collisions between the vehicle and different objects in a path of the vehicle, comprising:
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a laser radar system arranged on the vehicle and configured to direct laser beams outward from the vehicle, said laser radar system receiving, in a first operating stage, laser beams that have been reflected from objects in the paths of the outward directed laser beams, said laser radar system being configured to generate the laser beams in an eye-safe portion of the electromagnetic spectrum at a wavelength above 1.4 microns and comprising a high-powered laser radar; a processor coupled to said laser radar system and configured to receive signals derived from the laser beams received in the first operating stage and process the signals to determine a distance between said laser radar system and each of the objects from which the received laser beams have been reflected in the first operating stage; an imaging receiver for receiving laser beams that have been reflected from any of the objects in the paths of the laser beams directed outward from said laser radar system and creating images from the received laser beams, said processor being further configured to determine a plurality of range gates to apply at different times, in a second operating stage, to said imaging receiver such that when each of the range gates is applied to said imaging receiver, an image is created from only laser beams received from objects in that range gate, each of the range gates being determined for a respective one of the objects from which the laser beams received in the first operating stage have been reflected based on the determined distance between said laser radar system and the respective one of the objects from which the laser beams received in the first operating stage have been reflected such that said imaging receiver is thus configured to receive reflections of laser beams directed outward from said laser radar system in the second operating stage only from the respective one of the objects from which the laser beams received in the first operating stage have been reflected and any other objects in the same range gate; and a reactive system coupled to said processor, said processor being configured to control said reactive system to selectively indicate the presence of any of the objects from which the received laser beams have been reflected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 21, 22, 23)
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10. A method for preventing collisions between a vehicle and different objects in a path of the vehicle, comprising:
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in a first operating stage, directing laser beams outward from a laser radar system on the vehicle, the laser radar system being configured to generate the laser beams in an eye-safe portion of the electromagnetic spectrum at a wavelength above 1.4 microns and comprising a high-powered laser radar; receiving, at a laser beam receiving system, laser beams that have been reflected from objects in the paths of the outward directed laser beams; receiving, at a processor, signals derived from the received laser beams; processing, at the processor, the received signals to determine a distance between the laser radar system and each of the objects from which the received laser beams have been reflected; determining, using the processor or a different processor, a plurality of range gates to apply at different times to the laser beam receiving system such that when each of the range gates is applied to the laser beam receiving system, an image is created from only laser beams received from objects in that range gate; in a second operating stage, directing laser beams outward from the laser radar system; receiving, at the laser beam receiving system, laser beams that have been reflected from objects in the paths of the outward directed laser beams; applying the range gates at different times to the laser beam receiving system to thereby create an image from only laser beams received from objects in the applied one of the range gates, each of the range gates being applied for a respective one of the objects from which the laser beams received in the first stage have been reflected based on the determined distance between the laser radar system and the respective one of the objects from which the laser beams received in the first operating stage have been reflected such that the laser beam receiving system is thus configured to receive reflections of laser beams directed outward from the laser radar system in the second operating stage only from the respective one of the objects from which the laser beams received in the first operating stage have been reflected and any other objects in the same range gate; creating, when each of the range gates is applied to the laser beam receiving system, an image from only laser beams received from objects in the applied one of the range gates and then controlling a reactive system on the vehicle to indicate the presence of any of the objects. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 24, 25, 26)
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Specification