Vehicle Sensors

Since autonomous vehicles do not have a human driver, how do they navigate the world around them? The answer is they rely on a variety of different sensors to mimic human capabilities. There are four main types of sensors in use today: camera, radar, lidar and sonar.

Cameras are by far the most pervasive sensor and you cannot find an autonomous vehicle that doesn’t have many (often 8 to 12) of them pointed in different directions. A very simple function, among many, that a camera serves is to read or interpret road signs and traffic signals. Radar is the second most prevalent sensor, mainly because it functions well in poor visibility and the technology is relatively inexpensive. Radar is mostly used to determine the distance of objects (e.g., another vehicle) from the car. Sonar is a cousin of radar (uses sound waves instead of electromagnetic waves) but appears to be losing favor among vehicle manufacturers mainly because radar can do most of what sonar can at a lower price point.

The final sensor we will discuss is lidar which stands for “light detection and ranging”. Lidar uses laser light and its reflection to provide a 360-degree, 3D map of the surroundings of the vehicle. If you have seen an autonomous vehicle, these are the spinning modules one often sees on the roof or side panel.  While lidar is tremendously helpful to map the complete environment around the car, it is by far the most expensive sensor and there is a very strong push by technologists to reduce the cost drastically.

Host CPU Offload Product Features Summary
wdt_ID Speed 1G 10G 10G 10G 10G/40G 10G/40G 100G 100G 100G 100G
1 Model ANIC-4Ku ANIC-20Ku ANIC-40Ku ANIC-40Kq ANIC-80Ku ATLAS-1000
ANIC-100Kq ANIC-200Ku ANIC-200K
2 Port/Type 4 X 1G SFP 2 X 10GSFP+ 4 X 10GSFP+ 1 X 40G4
2 X
40G8 X
2 X
1 X
2 X
2 X
40G2 X
2 X
3 PCIe Interface Gen3 x8 Gen3 x8 Gen3 x8 Gen3 x8 Gen3 x8 Gen3 x8 Gen3 x16 Gen3 x16 Gen3 x16 Gen3 x16
4 Dimensions
(H x L inches)
4.25 x 6.5   4.25 x 6.25 4.25 x 6.25 4.25 x 6.25 4.25 x 6.25 1.75 x12.28x14 4.25 x 10.5 4.25 x 10.5 4.25 x 6.5 4.25 x 10.5
5 Memory 32MB 4G 4G 4G 4G 16/32G 12G 12G 8G 12G
6 Timestamp 5.7 nS 5.7 nS 5.7 nS 5.7 nS 5.7 nS 5.7 nS 4 nS 4 nS 4 nS 4 nS
7 100% Packet
8 Gigamon, Arista
9 Packet Merging
10 Packet Parsing

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FPGA Acceleration Features

100% Packet Capture | Flow Classification | Flow Shunting | Precise Time Stamping | Packet Merging | Packet Slicing | Packet Parsing | Packet Filtering | Deduplication | Host Packet Buffer | Packet Steering | Direct Memory Access (DMA) | Statistics (RMON1)

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