Short-Range Coordination Of Human-Driven Vehicles With Driverless Vehicles
Publication Date: 2014-Feb-25
The IP.com Prior Art Database
Disclosed is a system that enables the automatic communication between driverless and human-driven vehicles, via radio signals, so that the driverless vehicle can respond and perform as needed to maintain safe operation.
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As driverless vehicles become more common over the coming years, an extended period is expected in which driverless vehicles share the road with human-driven vehicles. While driverless vehicles can include various systems for communicating to other driverless vehicles, driverless vehicles currently perceive that a human-driven vehicle is speeding up, slowing down, changing lanes, and so on by using visual and auditory signals via light radar (LIDAR) and light-sensing technology. LIDAR in driverless vehicles uses lasers to illuminate a remote object and then analyzes the light reflected back to a detector. The technology is very sensitive and fast. It can issue over one million points of light each second ( http://184.108.40.206/eng12/history/spring2013/pdf/3124.pdf). However, that data must also be analyzed very quickly in order for the driverless vehicle to alter course. How
well it can do that analysis depends on processing power and on the quality of the
algorithms evaluating the input.
A system is herein disclosed to equip human-driven vehicles with devices that can broadcast important information as radio signals whenever a driver employs the brakes, signals, honks, etc. The driverless vehicles can receive and process those radio signals and accordingly respond.
The system can also broadcast the speed and acceleration of the human-driven vehicle (based on foot pressure on the gas pedal or based on the vehicle's own internal sensors). This action is not overtly signaled by a human driver, but other human drivers can quickly perceive and respond to it.
Turn signals typically convey information before any change in the movement of the vehicle. A system in which human-driven vehicles emit turn signal information can allow the driverless vehicles to anticipate behavior rather than having to react only after something changed physically.
In driverless vehicles today, some experiments have shown that the vehicles had to "swerve" away from another vehicle coming into the occupied lane. Those make for tense moments. Most drivers signal well in advance of a lane change or turn. Either the drivers did not do so in these cases, or the driverless vehicles did not detect the signals.
Existing driverless vehicle cameras have some ability to detect turn signals, yet the cameras have trouble in the rain because of "shiny surfaces", as well as in heavy fog and snow. Additionally, the light from turn signals is more difficult to detect and process than simple changes in motion. One reason for this is that different kinds of vehicles have different positions for the turn signals. (Consider the position of turn signals on trucks versus buses versus motorcycles.) The rhythm of the flashing can vary wildly as
Even if the cameras are correct 99% of the time, the disclosed system can help to close
-Range Coordination Of Human
Range Coordination Of Human - -Driven Vehicles With Driverless Vehicles
Driven Vehicles With Driverless Vehicl...