Automotive collision avoidance safety protecting device and protecting method based on infrared image processing

Abstract

The invention discloses an automotive collision avoidance safety protecting device and a protecting method based on infrared image processing. The protecting device disclosed by the invention comprises an infrared camera and camera control subsystem, an infrared camera pickup illuminating subsystem, a central processing unit, an acoustic image and light alarming subsystem, a vehicle speed control subsystem, a signal detecting module and a power module. By an infrared imaging technology, the device and the method disclosed by the invention are suitable for the automotive safety protection under various environmental climate conditions and various road conditions; an obstacle mathematical model based on a virtual lane and an identification space is established, and precise distance measurement on an obstacle is completed; the identification space is established in the virtual lane, the range of images to be processed is limited, the quantity of processing data is effectively reduced, and the real-time performance and the rapidness of the device are guaranteed; and an obstacle distance measuring formula is derived with the obstacle mathematical model, distance measurement is simple and reliable, the practicability is stronger, normal overtaking and steering are not affected, collision accidents and real-end collision can be effectively avoided, and driving safety is guaranteed.

Description

Technical field [0001] The invention relates to the field of safety protection for automobile driving collision avoidance, in particular to a safety protection device and method for preventing automobile driving collision by adopting active infrared light irradiation image processing technology. The protection scope relates to the front and rear of the car. Avoid collisions in front of the car, and behind the car to prevent rear-end collisions. Background technique [0002] Safety distance measurement, hazard evaluation and early warning, and vehicle speed control in the driving of automobiles are important functions of automobile intelligent collision avoidance systems, which have been highly valued by people for a long time. Among them, safe distance measurement and hazard evaluation and early warning are the key contents of the research of automobile intelligent collision avoidance system. At present, many automobile safety protectors using millimeter radar wave ranging, infr...

AI Technical Summary

Problems solved by technology

[0003] Millimeter radar wave ranging technology and image ranging technology are mainly used in unmanned vehicles that are in the research stage in various countries. Some imported high-end luxury cars in my country are also used. They are only suitable for constant-speed cruise on high-grade highways. Reports and cases of use on rural roads and urban roads are high in cost and cannot be used in mid-to-low-end cars, passenger cars and trucks. Moreover, the car safety protectors with existing image ranging technology often need to use natural light. In foggy weather, Cannot be used in heavy rain or at night

[0004] Infrared ranging technology cannot realize accurate distance detection of moving targets while the car is driving, but can only detect the presence or absence of targets within an appropriate distance, and it depends on the degree of reflection of the target on infrared light, that is, the intensity of infrared reflection

Therefore, it cannot effectively detect targets with weak reflective capabilities such as pedestrians, animals, trees, low road objects, dirty vehicles, etc., resulting in serious limitations in its use.

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