Vehicle collision prewarning method and apparatus

Abstract

The invention discloses an early warning method and a device for vehicle collision. The early warning method is characterized in that the method comprises the following steps: after a vehicle is fired, colliding an early warning system to begin initializing each parameter, using an OBD information collection module, a sensor information collection module and a GPS information collection module to collect information of the vehicle, using an inter-vehicle information exchange module to collect peripheral vehicle information, sending the information of the vehicle to the peripheral vehicles, calculating individualized collision probability according to self state of a driver, and warning the driver; and the device consists of the OBD information collection module, the sensor information collection module, the GPS information collection module, the inter-vehicle information exchange module, an information exchange module in the vehicles, a collision detection module and a vehicle collision warning module. Each module exchanges information in the vehicle through a wireless local area network in the vehicle, does not change an electric line of the vehicle and does not increase wire harness inside the vehicle, and can effectively reduce occurrence of traffic accidents, so as to reduce casualties.

Description

technical field [0001] The invention relates to the field of wireless network and intelligent transportation, in particular to a vehicle collision early warning method and device. Background technique [0002] Among the automobile safety problems, the automobile collision problem should be paid enough attention. The current automobile anti-collision technology focuses on the research on the collision prevention of rear-end collisions of vehicles on straight roads, and the core is the calculation of the safe distance between vehicles. When calculating the safety distance, two problems need to be solved, one is the measurement of the real-time distance of the vehicle, and the other is the problem of the collision detection algorithm. [0003] In terms of measuring the real-time distance of the vehicle, the commonly used methods are direct distance measurement and GPS positioning method. Direct ranging methods mainly include ultrasonic ranging, microwave radar ranging and las...

AI Technical Summary

Problems solved by technology

[0006] In general, the current vehicle collision detection technology has the following deficiencies: (1) It can only obtain limited vehicle information, such as distance, speed, etc., with few sources of information and low accuracy; , involving distance, speed, acceleration, steering, position and other information, especially the information of surrounding vehicles; therefore, obtaining the information required for collision detection through various methods and exchanging information between vehicles will be able to improve Collision Warning

(2) The scope of application is small, it is only suitable for straight road detection, and there is a lack of collision detection technology for non-line-of-sight situations (such as curves, intersections, etc.); therefore, it is necessary to combine wireless network technology for non-line-of-sight communication between vehicles to Efficient collision detection in non-line-of-sight situations (such as curves, intersections)

(3) The collision detection algorithm lacks individuation, and whether a collision can be avoided depends largely on the driver's reaction time, but there are great differences in the driver's reaction time, including the difference between novices and veterans, and the difference between the same driver. The difference in state, etc.; therefore, it is necessary to personalize the driver in different states when performing collision detection

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