Laser radar and control method thereof

A technology of laser radar and control method, which is applied in the field of radar, can solve the problems affecting the stability and quality of laser radar point cloud data, the actual detection direction of laser radar is unstable, and the accuracy of point cloud data decreases, so as to enhance the anti-interference ability , Eliminate translational interference, improve stability and quality

Active Publication Date: 2020-08-14
HESAI TECH CO LTD
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Problems solved by technology

[0004] However, lidar will be subject to interference such as environmental vibration during work, which will cause jitter of point cloud data and affect the stability and quality of point cloud data generated by lidar
For example, the movement of the lidar will cause disturbance to the scanning device, and the torque generated by the disturbance will make the actual detection direction of the lidar unstable
Especially in the harsh outdoor environment, the lidar is more strongly interfered, which reduces the accuracy of point cloud data

Method used

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  • Laser radar and control method thereof
  • Laser radar and control method thereof
  • Laser radar and control method thereof

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Embodiment Construction

[0083] The embodiment of this specification provides a laser radar, which can generate a motion signal by measuring the motion state of the laser radar, and can adjust the scanning device through the feedforward control signal generated by the motion signal, so as to control the disturbance of the scanning device Active compensation is performed to eliminate the influence of disturbance and enhance the stability of the scanning device when it is disturbed, so the stability and quality of point cloud data generated by lidar can be improved.

[0084] In order to enable those skilled in the art to more clearly understand and implement the ideas, implementation solutions and advantages of the embodiments of the present specification, the following describes in detail through specific application scenarios with reference to the accompanying drawings.

[0085] refer to figure 1 Shown is a schematic structural diagram of a laser radar in the embodiment of this specification. In the e...

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Abstract

The invention discloses a laser radar and a control method thereof. The laser radar comprises a motion detection device, a feedforward control device and a scanning device. The motion detection deviceis suitable for measuring the motion state of a laser radar, generating a motion signal and inputting the motion signal into the feedforward control device; the feedforward control device is suitablefor generating a feedforward control signal according to the motion signal and inputting the feedforward control signal into the scanning device; and the scanning device is suitable for carrying outadjusting according to the feedforward control signal. By adopting the scheme, the interference of external vibration on the laser radar can be reduced, and the stability and quality of point cloud data generated by the laser radar in a vibration state are improved.

Description

technical field [0001] The embodiments of this specification relate to the technical field of radar, and in particular to a laser radar and a control method thereof. Background technique [0002] At present, Lidar (Light Detection And Range, LIDAR or Laser Detection And Range, LADAR) has been widely used in resource development, environmental monitoring, transportation and communication and other fields. [0003] The laser radar can transmit detection signals to the target through its own scanning device, and after processing the echo signal reflected by the target, the parameter data of the target can be obtained, and by adjusting the scanning device to change the direction of the detection signal, the target can be detected. Scan in all directions to obtain the parameter data of each direction of the target. [0004] However, LiDAR will be subject to interference such as environmental vibration during work. This interference will cause jitter of point cloud data and affec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/497G01S17/02G01S17/86G01C21/16G05B13/02
CPCG01S7/497G01S17/02G01S17/86G01C21/165G05B13/024
Inventor 高永丰邓奇超何海龙向少卿
Owner HESAI TECH CO LTD
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