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Summary of Contents for LSLIDAR N20
- Page 1 User Manual V1.0.0 2023.08 LeiShen Intelligent System Co., Ltd. http://www.lslidar.com/...
- Page 2 Safety Instruction Before using the product, please read and follow the instructions of this manual carefully, and refer to relevant national and international safety regulations. ∆Attention Please do not disassemble or modify the Lidar privately. If you need special instructions, please consult our technical support staff. ∆Laser Safety Level The laser safety of this product meets the following standards: ⚫...
- Page 3 the power supply requirements, or supply power in a humid environment may cause abnormal operation, fire, personal injury, product damage, or other property loss. Light Interference Some precise optical equipment may be interfered with by the laser emitted by this product, please pay attention when using it. Vibration Please avoid product damage caused by strong vibration.
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Page 4: Table Of Contents
TABLE OF CONTENTS Product Profile ......................1 1.1 Overview ......................1 1.2 Mechanism ..................... 1 1.2.1 Time of Flight ..................1 1.2.2 Grid Map Presentation ..............2 1.3 Specifications ....................2 1.4 Dimensions ..................... 3 1.5 Interface Definition ..................4 1.5.1 LiDAR Base Connector .............. -
Page 5: Product Profile
1 Product Profile 1.1 Overview Based on TOF (time of flight) ranging method, the N20 lidar can two- dimensionally scan and detect the environment across 360°. The lidar uses wireless power supply and wireless communication internally, and the pulse repetition frequency (PRF) is 4.5 KHz. The lidar reaches a measurement accuracy of ±3 cm with a maximum range of 12 m. -
Page 6: Grid Map Presentation
You can get the 2D grid map information of the surrounds across 360° within the detecting distance, based on the combination of the distance value calculated in real-time by the signal processing unit embedded in the N20 and the angle information output by the highly accurate self-adjusted angle measuring module. -
Page 7: Dimensions
Standard Asynchronous Serial Port (Baud Rate: 230400 Communication Interface bps) Dimensions 52*36.1 mm Weight About 60 g IP Grade IPX-4 1.4 Dimensions Figure 1.3 Optical Window (unit: mm) Figure 1.4 Lidar Mounting and Mechanical Dimensions (unit: mm) -
Page 8: Interface Definition
1.5.2 Adapter Board A TTL to Type-C USB adapter module is available for the N20 series lidar to enable TTL to USB data conversion. This adapter board is not a necessary accessory for lidar operation. The function of each interface of the adapter board... - Page 9 Figure 1.7 Adapter Board Note: POWER DATA: data communication and system power supply. LIDAR: connection to lidar.
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Page 10: Electrical Parameters
2 Electrical Parameters The N20 lidar communicates with serial port of 3.3 V. An N20 lidar is made of a high frequency ranging core, a wireless transmission system, and a rotating subsystem. The rotating subsystem is driven by a brushless DC motor spinning inside the system. -
Page 11: Communication Protocol
3 Communication Protocol When the N20 is working, each set of data is output through the communication interface. The output data has uniform message formats. If you need the detailed communication protocol, please contact the technical support. -
Page 12: Optical Features
IEC 60825-1: 2014 4.2 Light Spot The light spot of the N20 lidar is a vertical oval. Its vertical divergence angle is 7 mrad, and the horizontal divergence angle is 3 mrad. The spot size at any distance can be calculated by multiplying the divergence angle by the distance. -
Page 13: Optical Structure
4.3 Optical Structure The N20 lidar uses a telescopic optical structure with the receiver and transmitter placed horizontally side by side. When designing the lidar installation and robot system integration, it is necessary to focus on the internal optical structure of the lidar so that the effective detection angle of the lidar can be designed accurately. -
Page 14: Development Tools And Supports
5.1 Point Cloud Display Software on Windows This section introduces the point cloud display and software usage of N20 lidar on Windows OS. This point cloud display software can be used for parameter configuration, simple lidar testing, etc. -
Page 15: Software Function Introduction
which laser channel, and timestamp indicates the time. 5.1.3 Software Function Introduction The point cloud display software has five function modules: “lidar”, “view”, “offline”, “setting” and “help”. The point cloud display interface supports the following actions: 1) Scroll the mouse wheel to zoom in/out the display image; you can also hold the right mouse button and drag the image up/down to zoom in/out the display image. - Page 16 Disconnect the lidar Control the point cloud display Clear point cloud interface Record lidar’s offline data packets Save the data in .csv format Select point cloud Reset the range of point cloud selected ▉ “View” Menu Buttons The angle of the lidar point cloud display interface and the display of gridlines and axes can be set.
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Page 17: Notes
5.2 Notes ▉ Notice about the Lidar setting and usage 1) It is not possible to use the N20 Windows client to receive data in two processes (open twice at the same time) on the same computer. The port occupancy of the PC is generally exclusive, so after a process is bound to a specified port number, the other software using the same process or the same port number cannot work normally. - Page 18 applicable graphics card of the software. The setting steps are as follows: 1) Take a laptop with Intel(R)HD Graphics 530 integrated graphics and NVIDIA GeForce GTX 960 discrete graphics as an example. Right-click on a blank space on the desktop to pop up a right-click menu and select “NVIDIA Control Panel”.
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Page 19: Ros Driver Operation Under Linux Os
6 ROS Driver Operation Under Linux OS This section introduces the point cloud display and driver usage of LSLiDAR N20 lidar on Linux. You can acquire the ROS driver from LSLiDAR technical support. The N20 ROS driver is applicable for point cloud display, parameter configuration, etc. - Page 20 roslaunch ls ls.launch Figure 6.2 open_port /dev/ttyUSB0 ERROR ! Note: The appearance of “open_port /dev/ttyUSB0 ERROR !” means that the USB device cannot be opened. Please check whether the USB device is connected and whether read and write permissions are granted. Open a new terminal and execute the command: rviz 5) Display the data detected by the LiDAR In the “Displays Window”...
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Page 21: Lidar Maintenance
7 LiDAR Maintenance 7.1 Shipping Requirements LSLiDAR has customized the package for the N20 lidar to withstand a certain amount of vibration and impact. Special packages must be used for long-distance transportation to avoid irreversible damage during transportation. 7.2 Installation Fix the lidar to the base using screws that meet the specifications, and pay attention to the base heat dissipation. - Page 22 Revision History Rev. Release Date Revised Content Issued/Revised By V1.0.0 2023-08-02 Initial Version LS1499 *This product information is subject to change without notice. Copyright ©2023 LeiShen Intelligent System Co., Ltd. All rights reserved.
- Page 23 Make Safer Driving Smarter Machine and Better Life ! Official Website: https://www.lslidar.com Sales: sales@lslidar.com After-Sales: support@lslidar.com...
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