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A performance index testing method and device of a lidar scanner

A technology for lidar and index testing, applied in instruments, radio wave measurement systems, etc., can solve problems such as low test efficiency, insufficient data volume, and insufficient testing

Active Publication Date: 2021-03-26
SHENZHEN KYLE OPTICS TECH CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] When performing the index test of test distance, test accuracy and repeatability accuracy, the existing index test methods have technical problems such as insufficient testing, insufficient data volume, low test efficiency, and difficulty in fully reflecting the technical index level of laser radar. A new testing method for performance indicators of lidar scanners is proposed, the purpose is to obtain product indicators through a single scan, and effectively improve product testing and production efficiency

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  • A performance index testing method and device of a lidar scanner
  • A performance index testing method and device of a lidar scanner
  • A performance index testing method and device of a lidar scanner

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Embodiment 1

[0050] Aiming at the technical problems existing in the existing index test methods such as insufficient testing, insufficient data volume, low test efficiency, and difficulty in fully reflecting the technical index level of the laser radar, the embodiment of the present invention provides a method for testing the performance index of the laser radar scanner. , which is mainly used to test whether the farthest test distance, test accuracy and repeatability of the LiDAR scanner are up to standard, and can be applied to the performance index test of the 2D scanning LiDAR scanner and the 3D multi-line scanning LiDAR scanner.

[0051] Such as figure 1 As shown, the test method provided by the embodiment of the present invention mainly includes the following steps:

[0052] Step 10, place the lidar scanner in front of the target based on the standard longest test distance, turn on the lidar scanner to scan the laser point cloud of the target, and obtain multiple point cloud data co...

Embodiment 2

[0063] On the basis of the above-mentioned embodiment 1, the embodiment of the present invention further takes a two-dimensional scanning lidar scanner as an example to illustrate its performance index testing method.

[0064] to combine figure 2 , when the laser radar scanner is a two-dimensional scanning laser radar scanner, the specific test method is as follows:

[0065] In step 10, based on the standard farthest test distance of the 2D scanning LiDAR scanner, place the 2D scanning LiDAR scanner in front of a plane target, and turn on the 2D scanning LiDAR scanner to perform laser point cloud scanning on the target , to obtain multiple point cloud data corresponding to the planar target.

[0066] Because the laser radar scanner is a discontinuous scanning method, the point cloud data corresponding to the plane target is a series of discontinuous spatial data points, such as figure 2 shown. Here, the two-dimensional scanning lidar scanner 1 is used as the origin of the...

Embodiment 3

[0080] On the basis of the above-mentioned embodiment 1, the embodiment of the present invention further takes a three-dimensional multi-line scanning lidar scanner as an example to illustrate its performance index testing method.

[0081] combine image 3 , when the laser radar scanner is a three-dimensional multi-line scanning laser radar scanner, the specific test method is as follows:

[0082] In step 10, based on the standard farthest test distance of the three-dimensional multi-line scanning laser radar scanner, the three-dimensional multi-line scanning laser radar scanner is placed in front of a plane target, and the three-dimensional multi-line scanning laser radar scanner is turned on in front of the plane target. Multiple lines of laser scanning points are projected on the surface, and then multiple point cloud data corresponding to the planar target are obtained.

[0083] Here, the xyz three-dimensional coordinate system is established with the three-dimensional mu...

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Abstract

The invention provides a performance index testing method and device for a laser radar scanner, and the method comprises the steps: placing the laser radar scanner in front of a target based on a standard farthest test distance, starting the laser radar scanner to carry out the laser point cloud scanning of the target, and obtaining a plurality of point cloud data; judging whether the data point corresponding to the standard farthest test distance is point cloud data or not, and further determining whether the farthest test distance of the laser radar scanner reaches the standard or not; fitting each piece of point cloud data to obtain a fitting formula, and calling the fitting formula to calculate to obtain a fitting value of each piece of point cloud data; and calculating the absolute value of the difference between the measured value and the fitting value of each point cloud data, taking the maximum value, and determining whether the test precision and the repetition precision of the laser radar scanner reach the standard or not according to the maximum value. A fixed target is arranged at the nominal distance index of the laser radar, data fitting is combined, multiple productindexes can be obtained through one-time scanning, and the testing and production efficiency of products is effectively improved.

Description

【Technical field】 [0001] The invention relates to the technical field of laser radar index testing, in particular to a method and device for testing performance indexes of a laser radar scanner. 【Background technique】 [0002] The laser radar scanner is based on the laser pulse as the detection signal source, obtains the distance information of the surrounding environment target, and can complete the three-dimensional coordinate reconstruction of the target. According to different classification standards, lidar can be divided into various categories: according to the number of scanning lines, lidar can be divided into single-line lidar and multi-line lidar; according to different scanning technologies, lidar can be divided into mechanical scanning type Laser radar and solid-state scanning laser radar; according to the different detection light sources, laser radar can be divided into semiconductor laser radar and fiber laser laser radar. However, no matter how the lidar te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/497
CPCG01S7/497
Inventor 张石李亚锋鲁佶陈俊麟
Owner SHENZHEN KYLE OPTICS TECH CO LTD
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