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Soon cars will communicate with LED headlights

Soon cars will communicate with LED headlights

By BizLED Bureau

September 4, 2015: Soon cars will communicate with LED headlights as it may be possible to use visible light emitted by LEDs in car headlights to create a low cost automobile mesh network. This technology is being developed as a car-to-car communication platform. The system aims to use pulse modulation of the visible light to relay information from one car to another.

Visible light communication

Intel has been working on visible light communication (VLC) since 2008. The system proposed by Intel aims to use a series of rapid pulses of visible light to relay information from one car to another. The LED flashes would be so short as to be invisible to the human eye, but could message other cars about traffic conditions along the road, positioning, possible collisions, and could form part of an autonomous driving system.

The rate for transmitting the data from one car to another is low enough which a regular camera can receive. LEDs that are already used in cars can relay this data.

This technology can be implemented if about 10% of cars are transmitting, which can take about two years for new cars to adopt this technology.

This technology could be a cheaper option for vehicle to vehicle communication compared with implementing radar or lasers in every new car. Although radar and laser technologies would be more effective at making cars aware of their surroundings they are a costly alternative in a cost-conscious marketplace. At least 10% of cars on the road would need to be equipped with radar/laser systems to make a basic mesh network a viable solution.

This technology relies on line-of-sight which is a drawback compared with radar or wireless networking because adverse weather and ambient lighting conditions could interfere with the flashes from LEDs may make this technology not be workable as an autonomous driving technology solution.

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