Hesai PandarQT User manual

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www.hesaitech.com
Q01-en-2002A1
PandarQT
64-Channel Short-Range
Mechanical LiDAR
User Manual

Contents
1Introduction........................................................................................... 4
1.1 Operating Principle........................................................................ 4
1.2 LiDAR Structure .............................................................................. 5
1.3 Channel Distribution...................................................................... 6
1.4 Specifications................................................................................. 7
2Setup...................................................................................................... 8
2.1 Mechanical Installation.................................................................. 8
2.2 Interfaces ...................................................................................... 10
2.3 Connection Box (Optional) .......................................................... 13
2.4 Get Ready to Use .......................................................................... 16
3Data Structure...................................................................................... 17
3.1 Point Cloud Data Packet .............................................................. 18
3.2 GPS Data Packet........................................................................... 23
4Web Control ......................................................................................... 24
4.1 Home ............................................................................................ 25
4.2 Settings......................................................................................... 26
4.3 Azimuth FOV .................................................................................29
4.4 Operation Statistics......................................................................32
4.5 Upgrade ........................................................................................33
5PandarView.......................................................................................... 34
5.1 Installation....................................................................................34
5.2 Use.................................................................................................35
5.3 Features ........................................................................................37
6Communication Protocol .................................................................... 41
7Sensor Maintenance ............................................................................ 42
8Troubleshooting .................................................................................. 44
9Absolute Time and Laser Firing Time .................................................. 46
10 PTP Protocol................................................................................. 50
11 Certification Info........................................................................... 52
12 Support and Contact.................................................................... 53

1
Safety Notice
PLEASE READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY AND CONSULT ALL RELEVANT NATIONAL AND INTERNATIONAL SAFETY
REGULATIONS FOR YOUR APPLICATION.
■ Caution
To avoid violating the warranty and to minimize the chances of getting electrically shocked, please do not disassemble the device. The device
must not be tampered with and must not be changed in any way. There are no user-serviceable parts inside the device. For repairs and
maintenance inquiries, please contact an authorized Hesai Technology service provider.
■ Laser Safety Notice - Laser Class 1
This device satisfies the requirements of
· IEC 60825-1:2014
· 21 CFR 1040.10 and 1040.11 except for deviations (IEC 60825-1 Ed.3) pursuant to Laser Notice No.56, dated May 8, 2019
NEVER LOOK INTO THE TRANSMITTING LASER THROUGH A MAGNIFYING DEVICE (MICROSCOPE, EYE LOUPE, MAGNIFYING GLASS, ETC.)

2
■ Safety Precautions
In all circumstances, if you suspect that the device malfunctions or is damaged, stop using it immediately to avoid potential hazards and
injuries. Contact an authorized Hesai Technology service provider for more information on device disposal.
Handling
This device contains metal, glass, plastic, as well as sensitive electronic components. Improper handling such as dropping, burning, piercing,
and squeezing may cause damage to the device.
In case of dropping the device, STOP using the device immediately and contact Hesai technical support.
Enclosure
This device contains high-speed rotating parts. To avoid potential injuries, DO NOT operate the device if the enclosure is loose or damaged.
To ensure optimal performance, do not touch the device's enclosure with bare hands. If the enclosure is already stained, please refer to the
Sensor Maintenance chapter in user manuals for the cleaning method.
Eye Safety
Although the device meets Class 1 eye safety standards, DO NOT look into the transmitting laser through a magnifying device (microscope, eye
loupe, magnifying glass, etc.). For maximum self-protection, avoid looking directly at the device when it is in operation.
Repair
DO NOT open and repair the device without direct guidance from Hesai Technology. Disassembling the device may cause degraded
performance, failure in water resistance, or potential injuries to the operator.
Power Supply
Use only the cables and power adapters provided by Hesai Technology. Only the power adapters that meet the device's power requirements
and applicable safety standards can be used. Using damaged cables, adapters or supplying power in a humid environment can result in fire,
electric shock, personal injuries, product damage, or property loss.

3
Prolonged Exposure to Hot Surface
Prolonged exposure to the device's hot surface may cause discomfort or injury. If the device has been powered and operating for a long time,
avoid skin contact with the device and its power adapter.
Vibration
Strong vibration may cause damage to the device and should be avoided. If you need the mechanical vibration and shock limits of this product,
please contact Hesai technical support.
Radio Frequency Interference
Please observe the signs and notices on the device that prohibit or restrict the use of electronic devices. Although the device is designed, tested,
and manufactured to comply with the regulations on RF radiation, the radiation from the device may still influence other electronic devices.
Medical Device Interference
Some components in the device can emit electromagnetic fields, which may interfere with medical devices such as cochlear implants, heart
pacemakers and defibrillators. Consult your physician and medical device manufacturers for specific information regarding your medical device
and whether you need to keep a safe distance from the device. If you suspect that the device is interfering with your medical device, stop using
the device immediately.
Explosive Atmosphere and Other Air Conditions
Do not use the device in any area where potentially explosive atmospheres are present, such as high concentrations of flammable chemicals,
vapors or particulates (including particles, dust, and metal powder) in the air. Exposing the device to high concentrations of industrial
chemicals, including liquefied gases that are easily vaporized (such as helium), can damage or weaken the device's function. Please observe all
the signs and instructions on the device.
Light Interference
Some precision optical instruments may be interfered by the laser light emitted from the device.

4
1Introduction
This manual describes the specifications, installation, and data output format of PandarQT.
This manual is under constant revision. Please contact Hesai for the latest version.
1.1 Operating Principle
Distance Measurement: Time of Flight (ToF)
1) A laser diode emits a beam of ultrashort laser pulses onto the object.
2) Diffuse reflection of the laser occurs upon contact with the target object. The beams are detected by the optical sensor.
3) Distance to object can be accurately measured by calculating the time between emission and receipt by the sensor.
Figure 1.1 ToF Formula

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1.2 LiDAR Structure
Laser emitters and receivers are attached to a motor that rotates horizontally.
Figure 1.2 Partial Cross-Sectional Diagram
Figure 1.3 Coordinate System (Isometric View)
Figure 1.4 Default Rotation Direction
(Top View)
The LiDAR's coordinate system is shown above. The Z-axis is the axis of rotation.
By default, the LiDAR rotates in the clockwise direction in the top view. Users can also choose the counterclockwise direction in Web Control,
see Section 4.2 (Settings).
The origin is shown as a red dot in Figure 1.6 on the next page. After geometric transform, all the measurements are relative to the origin.
When the horizontal center of the emitter-receiver array passes the zero-degree position illustrated in Figure 1.4, the azimuth data in the
corresponding UDP data block will be 0°.

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1.3 Channel Distribution
The vertical resolution is unevenly distributed across all channels, as shown in Figure 1.5.
Figure 1.5 Channel Vertical Distribution
Figure 1.6 Laser Firing Position (Unit: mm)
Each channel also has an intrinsic horizontal angle offset, recorded in this LiDAR unit's calibration file.
Users can obtain the calibration file by sending the TCP command PTC_COMMAND_GET_LIDAR_CALIBRATION, as described in Hesai TCP API
Protocol (Chapter 6).

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1.4 Specifications
SENSOR
MECHANICAL/ELECTRICAL/OPERATIONAL
Scanning Method
Mechanical Rotation
Laser Class
Class 1 Eye Safe
Channel
64
Ingress Protection
IP67 & IP69K
Range
0.1 to 30 m (at 20% reflectivity)
Dimensions
Height: 76.0 mm
Range Accuracy
±3 cm (typical)
Diameter: 80.2 mm
Range Precision
2 cm (typical)
Operating Voltage
DC 9 to 55 V
FOV (Horizontal)
360°
Power Consumption
8 W
Resolution (Horizontal)
0.6° (with 0.15° gap)
Operating Temperature
-20℃ to 65℃
FOV (Vertical)
104.2° (-52.1° to +52.1°)
Weight
0.47 kg
Resolution (Vertical)
Finest at 1.45° (with min. gap 0.15°)
DATA I/O
Frame Rate
10 Hz
Data Transmission
UDP/IP Ethernet (Automotive 100BASE-T1)
Returns
Single Return (First)
Slave Mode
Single Return (Last)
Data Outputs
Distance, Azimuth Angle
Dual Return (First & Last)
Data Points Generated
Single Return Mode: 384,000 pts/s
CERTIFICATIONS
Dual Return Mode: 768,000 pts/s
RoHS, REACH, WEEE
Clock Source
PTP / GPS
CE, FCC, FDA, IC
PTP Clock Accuracy
≤1 μs (typical)
PTP Clock Drift
≤1 μs/s
NOTE Specifications are subject to change without notice.
NOTE Range accuracy as the average range error across all channels may vary with range, temperature and target reflectivity.
NOTE 4-pin connectors only support PTP as the clock source.

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2Setup
2.1 Mechanical Installation
Figure 2.1 Isometric View (Unit: mm)
Figure 2.2 Mounting Base (Unit: mm)