Large-FOV (field of view) short-range laser radar and vehicle

Abstract

The invention discloses large-FOV (field of view) short-range laser radar. The laser radar comprises a laser transmitting module, a laser receiving module and a rotating structure, wherein the laser transmitting module comprises a laser used for transmitting outgoing laser beams, a control circuit used for controlling the laser to work as well as a one-dimensional galvanometer used for changing light path direction of the outgoing laser beams in the vertical direction; the laser receiving module is used for receiving reflection laser to execute target detection, and the reflection laser is aroused by the outgoing laser beams reflected by the one-dimensional galvanometer under action of an external obstacle; the rotating structure is used for driving the laser transmitting module and the laser receiving module to rotate horizontally. The invention further discloses a vehicle. The large-FOV short-range laser radar is arranged at the front end of the vehicle. Short-range detection blind zone can be reduced, the structure is simple, production, installation and adjustment are convenient, and production cost is reduced greatly.

Description

technical field [0001] The invention relates to the technical field of laser detection, in particular to a short-range laser radar with a large field of view and a vehicle. Background technique [0002] In the autonomous driving technology, the environmental perception system is a basic and crucial part, and it is the guarantee of the safety and intelligence of the autonomous driving vehicle. The lidar in the environmental perception sensor has great advantages in terms of reliability, detection range, and ranging accuracy. Incomparable advantages. Lidar analyzes the turn-back time after the laser encounters the target object by emitting and receiving the laser beam, calculates the relative distance between the target object and the vehicle, and uses the three-dimensional coordinates and reflectivity of a large number of dense points on the surface of the target object collected during this process and other information, quickly rebuild the 3D model of the measured target, ...

AI Technical Summary

Problems solved by technology

[0003] At present, the vehicle-mounted lidar in the market is mainly used for long-distance detection. In order to avoid the waste of the laser beam irradiating the ground or the sky in the distance, the vertical field of view is usually set to be small, and there is a detection blind spot in short-range detection.

For example, the vertical field of view of VelodyneHDL-64E is 26.8°, and the vertical field of view of Hesai Technology Pandar 40 is 23°, and there is a detection blind spot when detecting within 30m

In addition, the design of multiple lines and multiple lasers makes the current vehicle-mounted lidar complex and costly

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