Vehicle rear collision early warning system based on optical multi-view vision

Abstract

The invention discloses a vehicle rear collision early warning system based on optical multi-view vision. The system comprises an information collection unit, an information recognition and processing unit, a control unit and an early warning unit. The information collection unit is used for collecting vehicle rear image information and measuring a relative distance between the vehicle itself and a vehicle behind. The information recognition and processing unit is connected with the information collection unit and at least comprises a vehicle type recognition module and a vehicle state determination module. Image information and data information are pre-stored in the vehicle type recognition module. The vehicle type recognition module determines the type of the vehicle according to the information collected by the information collection unit. The vehicle state determination module determines the distance, relative speed and relative accelerated speed of vehicles according to the information collected by the information collection unit. The control unit is connected with the image recognition and processing unit, determines whether a risk that the vehicle collides with the rear vehicles exists according to the information processed by the image recognition and processing unit, and gives out a command to the early warning unit according to the determination result. The early warning unit is connected with the control unit and comprises a sound early warning module and a light early warning module.

Description

technical field [0001] The invention relates to the technical field of vehicle safety, in particular to a vehicle rear-end collision warning system. Background technique [0002] At present, most of the automobile anti-rear collision systems are applied to the distance measurement. The commonly used measurement methods are: ultrasonic distance measurement, infrared distance measurement, laser distance measurement. The principle of ultrasonic distance measurement is to use the known propagation speed of ultrasonic waves in the air to measure the time it takes for the sound waves to encounter obstacles and reflect back after they are emitted, and to calculate the actual distance from the emission point to the obstacle based on the time difference between emission and reception. The work of the infrared range finder uses the principle of non-diffusion when the infrared ray propagates. When the infrared ray is emitted from the range finder and hits the reflector, it is reflected...

AI Technical Summary

Problems solved by technology

However, the current technology is far from enough to judge the relative speed and distance for early warning. It can be understood that the safety distance and speed set by these systems are fixed within a small area, but the safety value of small cars and large cars is natural. The difference is still relatively large

Existing technology and equipment do not take this into consideration, the actual data obtained is poor in availability and cannot provide accurate and effective information for the driver, and the anti-rear-end collision does not have the desired effect

Simultaneously the used instrument of existing method is expensive, and common family is difficult to afford high equipment cost and will also cause existing anti-rear-collision system to be unable to generally use

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