Car Networking: loaded with LED lights, let the car itself communication"

Engineers have been trying to make driving smarter and safer. To this end, they put forward a variety of programs: laser, radar, ultrasound, point to point WiFi, advanced image recognition technology, etc.. But these programs are complex and expensive to use. But perhaps the solution is very simple, as long as the car is equipped with LED lights.

Researchers at Intel Richard Roberts, by LED emit visible light can create a cheap car networking, car already has the headlights, taillights, so long as this system into the new system, it can form inter vehicle communication.

The system is known as visible light communication (VLC), Intel began to study the project from 2008, but it has been in a secondary position, Roberts hopes to be able to apply this technology to the concept of car networking. The VLC system allows the car lights to flicker, and the frequency of the flicker is related to the transmitted message, which can be used to communicate the message to other vehicles.

The flicker frequency is very short, the human eye can not see, but the machine can identify. Messages can be used to cover traffic conditions, location, and collisions, which can be used in automated driving systems.

In addition, these messages can be transmitted between vehicles, so that these messages can be shared between vehicles, and can be captured by ordinary camera flash. Additional sensors do make the system more intelligent, but the VLC is characterized by the need for special hardware support.

Radar and laser is the more advanced communication technology, it allows the car to perceive the surrounding situation, but Chen Ben is also very high, especially the sensor installed in the car interior. Although this solution can solve the problem, but the penetration rate of at least 10% to achieve specific results. The VLC scheme is easier to implement, and can be popularized immediately.

In addition, even if a large number of cars are equipped with radar, it is bound to produce a lot of signal noise, visible light will not have this trouble, because it only to nearby vehicles to send messages.

But the VLC is also flawed. First, the flashing light needs to be transmitted directly to the camera, if the car turns, or sideways, then the signal may be lost. The second point is the sun, the day when the lights are not open, even if it is flashing, the sun may also cover the flash. Third is extreme weather, fog, snow, may make the system failure.

When I interviewed the driver guards, but also referred to the problem of auxiliary driving night solutions, VLC may be the answer. The accident rate is relatively high at night, if you can solve the weather, then VLC will be a good system. At least it can make ordinary cars, become smart.

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