may2023 - 28
DIAGNOSTIC TECH
Figure 3 - Lidar sensor
the sensor gain doesn't have to increase as much in such
conditions. CV supporting ADAS doesn't need to see
pretty pictures, they just need the appropriate information
leading to superior perception of the environment
around the vehicle.
TOF CAMERAS - LIDAR
Time of flight (ToF) cameras typically work by emitting
light pulses, typically in the infrared (IR) spectrum which
we humans cannot see without special instruments, (see
my video covering lidar here: youtu.be/K7NRdwpqaAI)
and measuring the time it takes for the light to reflect
from an object and return to the camera sensors. With
this measurement, along with the speed-of-light time
constant, the system can calculate the distance to the
object. ToF cameras can be used for a variety of ADAS
applications, such as ACC, AEB, and PAEB. They are
particularly useful in low-light environments where
other sensors may struggle to provide useful information.
ToF cameras are becoming increasingly popular in
the automotive industry as they provide an efficient and
accurate way of providing CV perception. However, these
technologies are still rather expensive, but as their costs
28 Professional Distributor I May 2023 I VehicleServicePros.com
come down, we're likely to see more of them in the future.
You may have already seen a lidar system on a vehicle
passing through your shop. See Figure 3 to see if this
looks familiar.
MONO CAMERAS
Mono cameras consist of a single camera that captures
images of the environment. The camera's image sensor
can detect light, and the camera's processor is able to
interpret the data to produce an image. These images
are then analyzed by the ADAS system to detect objects,
such as other vehicles, pedestrians, and traffic signs. The
technology of mono cameras has advanced over the years,
which has improved their performance and capabilities
for ADAS applications.
For example, early mono cameras used CCD image
sensors that provided low-resolution images with poor
low-light performance. Nowadays, most mono cameras
use CMOS image sensors which provide higher-resolution
images and better low-light performance. Additionally,
the processing power of mono cameras has also increased,
which allows them to perform more advanced image
analysis in real time.
https://www.youtube.com/watch?v=K7NRdwpqaAI
http://www.VehicleServicePros.com
may2023
Table of Contents for the Digital Edition of may2023
Editor's Note: Off to the tool show
Sneak Peek
Most Wanted
In Focus
Cover Story: Scanning for sales
Diagnostic Tech: Sensors for current and future vehicle systems: Understanding ADAS sensors, part 1
Show Me Your Truck: Custom built for comfort
Go Sell Something: Not all demonstrations are created equal
Driving Sales: Body Shop & Collision Repair
Tales from the Road: The life-changing ad
may2023 - 1
may2023 - 2
may2023 - 3
may2023 - Editor's Note: Off to the tool show
may2023 - 5
may2023 - Sneak Peek
may2023 - 7
may2023 - 8
may2023 - 9
may2023 - 10
may2023 - 11
may2023 - Most Wanted
may2023 - 13
may2023 - In Focus
may2023 - 15
may2023 - 16
may2023 - 17
may2023 - 18
may2023 - 19
may2023 - Cover Story: Scanning for sales
may2023 - 21
may2023 - 22
may2023 - 23
may2023 - 24
may2023 - 25
may2023 - Diagnostic Tech: Sensors for current and future vehicle systems: Understanding ADAS sensors, part 1
may2023 - 27
may2023 - 28
may2023 - 29
may2023 - 30
may2023 - 31
may2023 - 32
may2023 - 33
may2023 - Show Me Your Truck: Custom built for comfort
may2023 - 35
may2023 - Go Sell Something: Not all demonstrations are created equal
may2023 - 37
may2023 - Driving Sales: Body Shop & Collision Repair
may2023 - 39
may2023 - 40
may2023 - 41
may2023 - Tales from the Road: The life-changing ad
may2023 - 43
may2023 - 44
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