Traffic scanning LIDAR

摘要

A system for determining the speed and position of objects comprises a beam source, a transmit reflection device, a beam receiver, a receive reflection device, and a controller. The beam source may generate a beam. The transmit reflection device may reflect the beam at the objects and may include a plurality of transmit faces with each transmit face oriented at a different angle and operable to reflect the beam at a different height. The beam receiver may detect the beam. The receive reflection device may include a plurality of receive faces with each receive face oriented at a different angle and operable to focus the beam reflected from objects at different heights onto the beam receiver. The controller may determine the position of the objects over time and calculate the speed of the objects based on a change in the position of the objects.

主权项

1. A system for determining the position and speed of a plurality of objects within a field of view, the system comprising:
a beam source operable to generate a beam; a transmit reflection device operable to reflect the beam at the plurality of objects, the transmit reflection device including a plurality of transmit faces, at least a portion of the transmit faces oriented at a different angle and operable to reflect the beam at a different height, wherein the beam reflection off each transmit face creates a sweep; wherein the transmit reflection device further includes a disc-shaped base and a disc-shape upper stage spaced apart from and of a smaller diameter than the base, the plurality of transmit faces being positioned in a circle between the upper stage and the base at an angle therebetween; a beam receiver operable to detect the beam; a receive reflection device including a plurality of receive faces, at least a portion of the receive faces oriented at a different angle and operable to focus the beam reflected from the plurality of objects at different heights onto the beam receiver; and a controller operable to (1) repeatedly perform a plurality of sweeps within the field of view to track each of the plurality of objects within the field of view, and (2) determine the position of each of the plurality of objects over time and calculate the speed of each of the plurality of objects based on a change in the position of the objects.