How to troubleshoot a Hesai Radar motor that is not running?
If the Hesai Radar motor isn't running, make sure the power adapter is properly connected and in good condition. If you're using a connection box, verify that it's intact. Check that the input voltage and current meet the requirements specified in Sections 1.4 and 2.3. Also, confirm that web control can be accessed. Power cycle the device to check if the issue persists.
What to do if Hesai Radar has abnormal packet size?
If you're experiencing abnormal packet size (missing packets) with your Hesai Radar, check that the horizontal FOV is correctly set on the Azimuth FOV page of web control. Verify that the motor's spin rate is steady on the Home page and that the Lidar's internal temperature is between -20°C and 95°C on the Operation Statistics page of web control. Ensure that the Ethernet is not overloaded and that no switch is connected into the network. If problems persist, connect the PC only to the lidar and check for packet loss, then power cycle the device.
How to fix 'Cannot open web control' on Hesai Radar?
If you cannot open web control for your Hesai Radar, verify that the Ethernet cable is properly connected. Ensure that the Lidar's IP is in the same subnet as the PC's. Restart your PC or connect the lidar to another PC, then power cycle the device.
Why am I not receiving data from Hesai Radar?
If you are not receiving output data on Wireshark or PandarView from your Hesai Radar, verify that the Ethernet cable is properly connected. Ensure that the Lidar's Destination IP is correctly set on the Settings page of web control and that the horizontal FOV is properly set on the Azimuth FOV page of web control. Check that the firmware version of the sensor is correctly shown on the Upgrade page of web control and that the Lidar is emitting laser light. Power cycle the device to check if the issue persists.
Why Hesai Radar GPS cannot be locked?
If the GPS on your Hesai Radar cannot be locked, verify that the GPS receiver is properly connected and that the PPS signal is connected to the lidar. Ensure the Destination GPS Port is correct on the Settings page of web control and that the input GPS signals satisfy the electrical requirements in Sections 2.2 and 2.3.1. Power cycle the device to check if the issue persists.
How to obtain the latest version of the user manual.
Contact information for technical assistance and troubleshooting.
Explanation of symbols, warnings, and formatting conventions used in the manual.
Specific warnings related to product operation, safety, and compliance.
Warning about hot surfaces on the lidar during and after operation.
Procedures to follow when the product exhibits malfunctions or causes environmental issues.
Instruction against disassembling the product without prior written agreement.
Considerations for radio frequency interference and compliance with regulations.
Precautions for use in environments with potentially explosive atmospheres or hazardous chemicals.
Warnings against exposing the product to corrosive liquids.
Reference to specifications for IP rating and avoiding ingress beyond limits.
Reference to specifications for operating temperature range.
Guidelines for storing the lidar in a dry and well-ventilated environment.
Information on potential interference with optical instruments and laser emission blocking.
Qualifications required for operating the lidar product.
Precautions regarding electromagnetic fields and medical devices.
Requirements and recommendations for the lidar's power supply and cables.
Instructions for connecting and handling electrical interfaces to prevent damage.
Information on the lidar's laser class and safety precautions for eye protection.
Guidelines for handling and cleaning the product's cover lens to maintain data quality.
Warning about hot surfaces on the lidar during and after operation.
Considerations for using customized firmware and software versions.
Procedures for product repair and maintenance, and consequences of unauthorized actions.
Explanation of the lidar's distance measurement method based on Time of Flight (ToF).
Description of the side connector lidar variant, including coordinate system and position.
Description of the bottom connector lidar variant, including coordinate system and position.
Details on vertical channel distribution and laser emitter/receiver positions for the side connector.
Details on vertical channel distribution and laser emitter/receiver positions for the bottom connector.
Information on obtaining and using the angle correction file for accurate measurements.
Clarifications and additional notes for the technical specifications.
Definition and conditions for measuring the lidar's ranging accuracy.
Definition and conditions for measuring the lidar's ranging precision.
Instructions for physically mounting the lidar unit, including screw types and torque.
Mechanical dimensions and mounting details for the side connector lidar.
Mechanical dimensions and mounting details for the bottom connector lidar.
Instructions for connecting and handling electrical interfaces to prevent damage.
Specifications for minimum bend radius and handling of cables to prevent damage.
Guidelines for proper connection and disconnection of the lidar's connector.
Information on the optional connection box for the lidar.
Description of the ports available on the optional connection box and GPS port pinout.
Diagrams and instructions for connecting the lidar with GPS or PTP.
Diagram and instructions for connecting the side connector lidar with GPS.
Diagram and instructions for connecting the bottom connector lidar with GPS.
Configuration steps for PC network settings to receive data from the lidar.
Overview of software tools for visualization, control, and development with the lidar.
Detailed breakdown of the structure and fields within a Point Cloud Data Packet.
Description of the Ethernet II MAC, IP, and UDP header fields in the data packet.
Details on the UDP data structure, including Pre-Header, Header, Body, and Tail fields.
Description of the Frame Check Sequence (FCS) in the Ethernet tail.
Methodology for analyzing vertical angle and other data points in the point cloud.
Details on the data body structure, including return modes and measurements per channel.
Explanation of different return modes and how measurements are stored in blocks.
Description of the Tail fields, including Return Mode and Motor Speed.
Details on UDP Sequence and FCS in the data packet.
Methodology for calculating the horizontal angle of a data point using various offsets.
Reference to the Distance field for analyzing data point distances.
Visualization of data points in spherical or rectangular coordinate systems.
Structure of GPS Data Packets, including header and UDP data.
Ethernet header structure for GPS Data Packets, including IP and MAC addresses.
Structure of GPS UDP data, including GPS Time, NMEA, and status information.
Format specifications for GPRMC NMEA sentences used for GPS data.
Format specifications for GPGGA NMEA sentences used for GPS data.
Description of the Ethernet tail, including the Frame Check Sequence (FCS).
Example analysis of GPS data packet content for time information.
Overview of the web interface's home page, displaying device status and parameters.
Configuration options for network parameters like IP address, subnet mask, and VLAN.
Detailed configuration options for VLAN tagging and destination IP settings.
Configuration options for lidar functions like Spin Rate and Return Mode.
Setting the motor's rotation speed (RPM) for the lidar.
Configuration of phase lock angle for synchronizing multiple lidar units.
Selection of methods for triggering laser firings (Angle-Based or Time-Based).
Option to enable filtering of interstitial points in point cloud data.
Choice between linear or nonlinear mapping for target reflectivity representation.
Enabling standby mode to stop motor and laser operations.
Configuration settings for time synchronization using GPS or PTP.
Configuration settings when GPS is used as the clock source for time synchronization.
Detailed parameters and logic for GPS time synchronization and PPS lock requirements.
Configuration settings and parameters when PTP is used as the clock source for time synchronization.
Configuration settings for the azimuth Field of View (FOV).
Configuration mode for azimuth Field of View (FOV).
Setting a continuous angle range for the azimuth FOV across all channels.
Configuring multiple continuous angle ranges for the azimuth FOV.
Display of operational statistics, including uptime, temperature, and operation time.
Procedures for upgrading the lidar's firmware and software.
Procedure for uploading firmware files to upgrade the lidar's software.
Function to perform a software reboot of the lidar.
Detailed steps for cleaning the lidar's cover lens to maintain data quality.
Troubleshooting steps for when the connection box indicator light is off.
Troubleshooting steps when the lidar's motor fails to operate.
Troubleshooting steps when data is not received despite the motor running.
Troubleshooting steps when data is received in Wireshark but not PandarView 2.
Troubleshooting steps for accessing the lidar's web control interface.
Troubleshooting steps for issues related to abnormal packet size or missing packets.
Troubleshooting steps for issues with point cloud data quality and alignment.
Troubleshooting steps when the GPS signal cannot be locked by the lidar.
Explanation of how the lidar obtains absolute time from external clock sources.
Details on using GPS as a clock source for time synchronization, including NMEA and PPS signals.
Details on using PTP as a clock source for time synchronization.
Formula for calculating the absolute time of Point Cloud Data Packets.
Calculation of start times for each data block in single and dual return modes.
Calculation of laser firing times for each channel within a block.
Requirements for the lidar's input voltage and cable voltage drop calculations.
Methods for estimating and calculating voltage drop over cables based on length and resistance.
Information on the lidar's power consumption under various operating conditions.
Voltage requirements during the power-up sequence of the lidar.
Explanation and data table for nonlinear mapping of target reflectivity.
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