Vehicle-mounted embedded-type road rage driving state detection device based on brain electrical signal and method

Abstract

The invention relates to a vehicle-mounted embedded-type road rage driving state detection device based on brain electric signal and a method. The device comprises a brain electric signal acquisition unit, a signal processing unit and a voice prompt unit, wherein, the brain electric signal acquisition unit comprises an electrode and an amplifying circuit; the amplifying circuit comprises a pre-amplifying circuit and a post-amplifying circuit; the signal processing unit comprises a processor and a memory; and the voice prompt unit comprises a voice decoder and a loudspeaker. The method for detecting through the device provided by the invention comprises the following steps: brain electrical signal characteristics are extracted based on wavelet packet decomposition and an extraction method of common spatial patterns characteristics; the extracted characteristics are classified by utilizing neural network; and road rage driving identifying results are obtained. The device and the method have the advantages that brain electrical signals can reflect emotional states accurately and promptly; an embedded-type microprocessor has a powerful signal processing performance and can meet need of real-time performance of computation; sound volume and voice choice can be regulated according to a driving state; and the embedded-type device is small in size and is very suitable for a vehicle-mounted environment.

Description

technical field [0001] The invention relates to the technical field of embedded signal processing, in particular to a vehicle-mounted embedded road rage detection device and method based on electroencephalogram signals. Background technique [0002] Anger is a common negative emotion in people's lives. When anger occurs, people tend to be impulsive and risky, and do things that are not good for others. Drivers also experience anger while driving. In psychology, driving with anger is called "road rage", which is used to describe the anger caused by the stress and frustration of driving in traffic jams. "Road rage" has become a common problem in the automobile age. With the sharp increase in the number of cars and the existence of contradictions such as road congestion, coupled with the complex composition of drivers in our country and their different qualities, the performance of "road rage" has been further exacerbated. In my country, 60.72% of car owners have road rage. , ...

AI Technical Summary

Problems solved by technology

[0003] At present, the detection method for driver's driving emotion is mainly based on the external behavior detection method, which is a non-contact measurement. It is installed such as a camera for information collection, and the external performance of the subject such as facial expression is used to judge the driving emotion. This method has the difficulty of unifying the scoring standards. Affected by conditions such as memory or other personal behaviors, light, image acquisition angle, etc., it is difficult to accurately track the image of a driver wearing glasses, or when the head of the tested person is freely rotating, which will cause the detection system to fail. Consistently and correctly report driver status

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