TOF-based miniaturized coaxial laser radar system
A lidar and coaxial technology, applied in the field of miniaturized coaxial lidar systems, can solve problems such as long range measurement, and achieve the effects of long range measurement, elimination of blind spots in range measurement, and high angle resolution.
Pending Publication Date: 2018-05-18
合肥嘉东光学股份有限公司
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Problems solved by technology
[0004] Existing 2D laser radars include triangular ranging, phase ranging, and TOF ranging. Among them, TOF ranging has the characteristics of long range and high azimuth resolution. Parallel to each other, due to the aperture effect has a certain blind area, this paper proposes a compact layout of the miniaturized coaxial lidar to effectively solve this problem
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[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0017] Please refer to Figure 1-2 , a TOF-based miniaturized coaxial laser radar system, including a scanning mirror 101, a scanning platform 102, a TR mirror 103, a laser emitting module 104, a power supply 105, a signal processing board 106, a laser receiving module 107, Avalanche diode APD108, the scanning platform 102 includes a code disc, a photoelectric switch, and a platform structure; the laser emitting module 104 includes a pulsed laser diode PLD, a ...
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The invention relates to a civil two-dimensional laser radar device, in particular to a TOF-based miniaturized coaxial laser radar system. The system comprises a scanning mirror, a scanning platform,a TR mirror, a laser emission module, a power supply, a signal processing board, a laser receiving module, a code-containing disc and an avalanche diode APD; the laser emission module comprises an impulse type laser diode PLD and a collimating lens; the laser receiving module 105 comprises a Galileo telescope system and a narrow bandpass filter. Accordingly, the device is a two-dimensional laser radar conducting laser ranging through a pulse laser flight time method, and has the advantages of being simple in structure, compact in layout and miniaturized; by means of a two-dimensional scanningmode two-dimensional point cloud picture, the device can be widely applied to sweeping robots and AGV service robots.
Description
technical field [0001] The invention relates to a civilian two-dimensional laser radar device, in particular to a TOF-based miniaturized coaxial laser radar system. Background technique [0002] Lidar is widely used to scan and detect target obstacles or generate point cloud data of space objects. As a high-precision sensor, it is widely used in sweeping robots, AVG commercial service robots and other fields. [0003] Taking the 2D laser radar currently on the market as an example, the general composition and working principle of the 2D laser radar are introduced, that is, the laser diode emits a beam of laser light, which is received by the laser receiver after being reflected by the target, and the laser receiver accurately measures the light pulse from The time between laser emission and laser reception, multiplied by the light beam, can measure the distance between the background target and the sensor. [0004] Existing 2D laser radars include triangular ranging, phase ...
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IPC IPC(8): G01S7/481
CPCG01S7/4812
Inventor 刘源徐跃明严波冯坤亮
Owner 合肥嘉东光学股份有限公司