Driving fatigue judgment method based on driver electrocardiogram RR interval
A discrimination method and driving fatigue technology, applied in the field of traffic safety, can solve problems such as different standards for driver fatigue discrimination, difficulty in determining the judgment standard for driving fatigue discrimination, large fatigue discrimination error, etc., and achieve the effect of solving different fatigue discrimination standards
Inactive Publication Date: 2017-09-12
JILIN UNIV
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] 2. Different standards for fatigue judgment due to individual driver differences
Driving fatigue is defined according to the subjective feelings of the driver. Due to the influence of factors such as the driver's age, gender, and driving experience, it is difficult to determine the criteria for judging driving fatigue.
Therefore, the problem of large fatigue discrimination errors caused by individual differences in drivers has always been a difficulty in driving fatigue discrimination.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0033] Such as figure 1 As shown, the driver's fatigue discrimination method based on the electrocardiographic RR interval of the present invention specifically includes the following steps:
[0034] Step 1, data acquisition and preprocessing: the flow process includes setting up the real vehicle road test platform successively, and this platform includes the U.S. Biopac physiological recorder and the computer connected with it; Gather the driver's electrocardiographic signal; Utilize the software analysis module of the Biopac physiological recorder to select hemodynamics-ECG interval Extraction, preprocessing the driver's ECG signal to obtain the time series of the driver's ECG RR interval{x 1 ,x 2 ,...,x T}, T is the total number of heart rate RR interval samples collected from the initial moment to the current moment;
[0035] Step 2, set the initial count value level=1; calculate the sequence structure residual u corresponding to time t according to the stationarity mod...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a driving fatigue judgment method based on a driver electrocardiogram RR interval. The method comprises the steps of acquiring a driver electrocardiosignal and extracting an electrocardiogram RR interval; according to a stationary model based on the electrocardiogram RR interval, calculating a corresponding sequence structure residual error; according to a first-order autocorrelation model, calculating autoregression residual errors of an autoregression residual error sequence corresponding to all moments; according to a GARCH (1,1) model of a condition variance, calculating condition variances of a condition variance sequence corresponding to all the moments; according to the condition variance corresponding to the current moment, judging whether a fatigue grade of a driver changes or not. According to the driving fatigue judgment method based on the driver electrocardiogram RR interval, the problem in the prior art is solved that fatigue driving judgment subjectivity is too high and judgment standards are different due to individual difference, and the method has high objectivity and general applicability.
Description
technical field [0001] The invention belongs to the field of traffic safety and relates to a driving fatigue discrimination method based on the RR interval of the driver's heartbeat. Background technique [0002] When the driver is in a fatigue state, it is very easy to make mistakes in observation, judgment and manipulation, which will lead to traffic accidents. According to the statistics of the American National Traffic Safety Association, 28% of traffic accidents are caused by driving fatigue. Therefore, it is of great significance to timely identify the driver's fatigue state and give an early warning to prevent traffic accidents. [0003] In order to be able to identify driving fatigue in a timely manner, some drivers' own physiological indicators and vehicle motion parameters should be used to detect and warn of driving fatigue. However, there are several deficiencies in the existing driving fatigue discrimination: [0004] 1. The definition of the threshold value ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/18A61B5/0456A61B5/352
CPCA61B5/18A61B5/7235A61B5/7264A61B5/352
Inventor 王琳虹王运豪李静伟郭梦竹柴萌
Owner JILIN UNIV