Driving muscle strain early warning value testing method and device and driving muscle strain early warning device

Abstract

A driving muscle straining early warning value test method comprises the following steps: selecting a plurality of drivers divided into different age groups, wherein each age group comprises at least two drivers with different heights; collecting electromyographic signals of each driver, calculating to obtain median frequencies, and fitting the median frequencies into a curve [phi] (x); using the median frequency primarily reaching the minimum value as a muscle strain reference value [phi]n (M), and using the median frequency corresponding to the ache felt by the driver to serve as a muscle strain evaluation value [phi]n (P); calculating age weight coefficients Kn corresponding to each age group and height weight coefficients [eta]n corresponding to the drivers, using the relation between [phi]n (M) and the [eta]n to calculate the muscle strain index value Ax, and using the Ax-Kn relation to calculate a first muscle strain integration index value YM; using the [phi]n(P)-[eta]n relation to calculate and obtain the Ax, using the Ax-Kn relation to calculate and obtain a second muscle strain integration index value YP, and using the section between YM and YP as the driving muscle strain early warning section. The invention also relates to a driving muscle straining early warning value test device, and a driving muscle straining early warning device.

Description

technical field [0001] The invention relates to the technical field of traffic safety, in particular to a method and device for testing a driving muscle strain early warning value and a driving muscle strain early warning device. Background technique [0002] The working position of driving a motor vehicle is a sitting position. The muscles of the legs need to perform tasks such as acceleration, deceleration, and braking. Scholars in China have confirmed that working in the driving position for a long time can cause the accumulation of low back muscle fatigue, and if it is not recovered in time, it can lead to low back muscle dysfunction. Although low back fatigue is not necessarily related to low back pain, muscle fatigue is more likely to cause low back pain. Muscle fatigue caused by long-time driving not only adversely affects the health of drivers, but also affects road traffic safety. Studies have confirmed that the incidence of low back pain in drivers who have been ...

AI Technical Summary

Problems solved by technology

[0003] Part of the existing driving fatigue research is a scale survey of subjective fatigue, or detection of fatigue behaviors such as the driver's face, eye features, and abnormal behavior; the other part is to collect the myoelectric signal of the driver's skin surface through equipment , the processed and converted myoelectric signal is transferred to the single-chip microcomputer, and the single-chip computer compares the myoelectric signal with the stored threshold value, and when the myoelectric signal is greater than the threshold value, the alarm connected to the single-chip microcomputer is controlled to alarm; the determination of the threshold value is through The sample human body is analyzed on some test platforms that simulate driving operations, without considering the driving time, age, height, road environment, vehicle performance and other influencing factors of the driver. Therefore, the determined threshold has a large error and cannot truly and accurately reflect driving. The extent of the driver's muscle strain, let alone reflect the driver's driving fatigue and muscle strain from a physiological point of view

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