Cooperative vehicle overtaking collision warning system

Abstract

The invention discloses a cooperative vehicle overtaking collision warning system. The warning system comprises a DSRC signal receiving module, a DSRC signal transmitting module, a sensor module, a human-computer interface module and a controller, wherein the DSRC signal receiving module is used for receiving a DSRC signal transmitted by a vehicle ahead and converting the DSRC signal into traveling data for the vehicle ahead; the DSRC signal transmitting module is used for transmitting the traveling data of the vehicle of the driver to a back vehicle through the DSRC signal; the sensor module is used for sensing the travelling movement of vehicles; the human-computer interface module accepts a user to operate and set the system and provides the functions of displaying information and giving sound alarm; and the controller is used for processing the sensing result of the sensor and controlling system operation flow, informing the human-computer interface module to warn the driver of the vehicle through lamplight and sound according to the brake event of the vehicle ahead or the vehicle at the back, and informing the DSRC signal transmitting module to warn the driving of the back vehicle. The warning system adopts a specific short distance wireless communication technology with propagation directional property to transmit travelling information to rearward rapidly, eliminates the response delay time of the driver in the vehicle stream, and further avoids the overtaking collision accident.

Description

technical field [0001] The invention relates to a cooperative vehicle collision warning system, in particular, it refers to transmitting the emergency braking information of the vehicle to the rear vehicle through a specific short-range wireless communication (Dedicated Short-Range Communication, DSRC) technology, and the rear vehicle then transmits it in real time For the vehicles behind, a cooperative vehicle collision warning system is formed. Background technique [0002] In a car-following environment with heavy traffic flow, generally vehicles will maintain the same speed and maintain different following distances depending on the speed of the vehicle. However, it is not the recommended safe distance, except for the traffic jam caused by the huge traffic flow On the other hand, it is also the following behavior of the driver in order to avoid the vehicle in the adjacent lane cutting into the front. Therefore, a phenomenon can be observed, that is, the braking response ...

AI Technical Summary

Problems solved by technology

The vehicle collision avoidance system using this method can only obtain the driving dynamic information of the previous vehicle, and cannot eliminate the phenomenon of amplification of the braking effect caused by the accumulation of driving reaction delay time, that is, the above method will not be applicable to vehicles with a short following distance. stable traffic environment

On the other hand, most cooperative vehicle collision avoidance systems use long-distance wireless communication systems and cooperate with the global satellite positioning system (GPS) to locate vehicles. However, the accuracy of GPS positioning will affect the identification of the relative positions of adjacent vehicles. In addition, GPS satellite signals are easily blocked in long tunnels and urban environments, which will affect its positioning function

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