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HDL-64E S2 and S2.1 User’s Manual

 

 

Lasers are numbered sequentially starting with 0 for the first lower block laser to 31 for the last lower block laser; and 32 for the first upper block laser to 63 for the last upper block laser. For example, laser 32 fires simultaneously with laser 0, laser 33 fires with laser 1, and so on.

The sensor has an equal number of upper and lower block returns. Hence, when interpreting the delay table, each sequential pair of data blocks represents the upper and lower block respectively. Each upper and lower block data pair in the Ethernet packet has the same delay value.

The first firing of a laser pair occurs 419.3 µs after the issuance of the fire command. Six firings of each block takes 139 µs and then the collected data is transmitted. It takes 100 µs to transmit the entire 1248 byte Ethernet packet. This is equal to 12.48 Bytes/µs and 0.080128 µs/Byte. See Appendix E for more information.

A timing table, shown in Appendix G, shows how much time elapses between the actual capturing of a distance point and when that point is output from the device. By registering the event of the Ethernet data capture, you can calculate back in time the exact time at which any particular distance point was captured.

firMWare uPdate

From time to time Velodyne issues firmware updates. To update the sensor’s firmware:

1.Obtain the update file from Velodyne.

2.Connect the wiring harness RS-232 cable to a standard Windows compatible PC or laptop serial port.

3.Power up the sensor.

4.Execute the update file; the screen below appears.

Figure 5. HDL software update screen capture.

5.Select the appropriate COM port. 6.Click Update.

7.The firmware is uploaded and check summed before it is applied to the flash memory inside the sensor. If the checksum is corrupted, no update occurs. This protects the sensor in the event of power or data loss during the update.

•If the update is successful, the sensor begins to spin down for a few seconds and then powers back up with the new firmware running.

•If the update is not successful, try the update several times before seeking assistance from Velodyne.

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Velodyne Acoustics HDL-64E S2.1 user manual FirMWare uPdate, HDL software update screen capture
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HDL-64E S2, HDL-64E S2.1 specifications

The Velodyne Acoustics HDL-64E S2.1 and HDL-64E S2 represent cutting-edge advancements in Lidar technology, specifically designed for autonomous vehicle navigation and mapping applications. These high-definition lidar sensors are acclaimed for their precision, reliability, and robustness, making them indispensable tools in various industries, from robotics to transportation.

One of the defining features of the HDL-64E series is its 64 laser channels, which allow for high-resolution 3D mapping of the environment. This multi-channel design significantly improves the sensor's ability to capture fine details in the surrounding area, providing a complete spatial representation necessary for autonomous driving. The HDL-64E S2.1 and S2 can generate dense point clouds with over 1.3 million points per second, facilitating real-time data acquisition and processing capabilities.

The HDL-64E series employs advanced technologies for optimal performance. Its 360-degree horizontal field of view and a vertical field of view ranging from -15 to +15 degrees allow the sensors to detect and classify objects in a comprehensive manner. This feature is crucial for ensuring the safety and efficacy of autonomous vehicles, as it enables them to perceive their surroundings from multiple angles.

In terms of accuracy, the HDL-64E models boast a measurement range of up to 120 meters, with an accuracy of ±2 centimeters. This level of precision ensures that autonomous systems can make informed decisions based on reliable data, essential for avoiding obstacles and navigating complex environments.

The sensors are designed to operate effectively in a range of environmental conditions. With IP67-rated waterproofing and robustness against dust and debris, the HDL-64E S2.1 and S2 are built to withstand challenging operating environments, thus ensuring continuous, dependable performance.

Integration of the HDL-64E series into existing systems is streamlined, thanks to its advanced Ethernet interface. This functionality makes it easier for developers to incorporate the Lidar data into existing software frameworks, enhancing the usability of the sensor in various applications.

In summary, the Velodyne Acoustics HDL-64E S2.1 and HDL-64E S2 represent a significant leap forward in Lidar technology, featuring high-resolution mapping, advanced detection capabilities, and rugged design. These characteristics make them an ideal choice for companies looking to implement reliable and precise sensing solutions in their autonomous systems.
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