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CN-122004793-A - Motion state determining method, motion state determining device, storage medium and program product

CN122004793ACN 122004793 ACN122004793 ACN 122004793ACN-122004793-A

Abstract

One or more embodiments of the present disclosure provide a method, an apparatus, a storage medium, and a program product for determining an vignetting state, where the method includes obtaining an electroencephalogram signal of a driver, extracting a power value of a preset characteristic band from the electroencephalogram signal, where the power value is positively correlated with a vignetting degree of the driver, and determining the vignetting state of the driver according to a magnitude relation of the power value relative to a baseline reference value, where objective and instant determination of the vignetting state is achieved by means of real-time comparison with the baseline reference value, and a reliable and direct neurophysiologic basis is provided for subsequent accurate early warning and active intervention.

Inventors

  • YU JING
  • MAO GUANGJUN
  • ZHANG YUANJUN
  • WANG XIN
  • LI QI
  • ZHAN MENGQI
  • ZHANG SHUN
  • LIU XIN

Assignees

  • 浙江吉利控股集团有限公司
  • 吉利汽车研究院（宁波）有限公司

Dates

Publication Date
20260512
Application Date
20260414

Claims (13)

  1. 1. A method of determining motion sickness status, the method comprising: Acquiring an electroencephalogram signal of a driver and a passenger; Extracting a power value of a preset characteristic wave band from the electroencephalogram signal, wherein the power value is positively correlated with the motion sickness degree of the driver and the passenger; and determining the motion sickness state of the driver according to the magnitude relation of the power value relative to the baseline reference value.
  2. 2. The method of claim 1, wherein the acquiring the electroencephalogram signal of the occupant comprises: the method comprises the steps of collecting an original brain electrical signal of a driver and a passenger, and performing signal preprocessing on the original brain electrical signal to serve as the brain electrical signal, wherein the signal preprocessing at least comprises pre-amplification and band-pass filtering.
  3. 3. The method of claim 2, wherein the acquiring the raw electroencephalogram signal of the occupant comprises: collecting the original electroencephalogram signals through a plurality of electroencephalogram electrodes arranged in a seat headrest; Wherein, the arrangement positions of the plurality of electroencephalogram electrodes correspond to occipital lobe and parietal lobe regions of the head of the driver.
  4. 4. The method according to claim 1, wherein the extracting the power value of the preset characteristic band from the electroencephalogram signal includes: And performing fast Fourier transform on the electroencephalogram signals to calculate the power value of the preset characteristic wave band.
  5. 5. The method of claim 1, wherein the power value is any one of the following: average power of the preset characteristic wave band; The relative power ratio of the preset characteristic wave band to other characteristic wave bands; and the preset characteristic wave band occupies the power percentage of the full wave band.
  6. 6. The method of claim 1, wherein the motion sickness state is divided into a plurality of motion sickness levels, and wherein the determining the motion sickness state of the occupant based on the magnitude relation of the power value relative to a baseline reference value comprises: The power value is compared with at least one classification threshold value to determine an motion sickness level to which the driver currently belongs, the classification threshold value being a multiple threshold value set based on the baseline reference value.
  7. 7. The method of claim 6, wherein different levels of motion sickness correspond to different intervention control commands, the method further comprising: A corresponding intervention control command is generated based on the determined motion sickness level.
  8. 8. The method of claim 7, wherein the motion sickness mitigation intervention strategy comprises at least one of: controlling the fragrance release system to release a preset type of soothing fragrance; Controlling a seat posture adjustment system to adjust a seat back angle; The motion sensing feedback device integrated on the seat is controlled to generate micro vibration synchronous with the motion of the carrier; The massage actuator integrated in the seat is controlled to start a massage action in a preset mode; controlling an audio system to play preset soothing contents; and controlling a ventilation adjusting system to adjust the ventilation opening of the cabin.
  9. 9. The method of claim 7, wherein the method further comprises: And when the driver and the passenger are continuously judged to reach or exceed the preset serious motion level and the duration exceeds the preset duration, controlling an emergency processing device arranged in the seat to execute actions so as to enable the cleaning bag to be provided to a position which is convenient for the driver and the passenger to take.
  10. 10. The method of claim 7, wherein the method further comprises: Acquiring motion state change information before and after executing the motion relieving intervention strategy; and adjusting a corresponding multiple threshold value and/or an execution parameter of the intervention control instruction according to the motion state change information.
  11. 11. An apparatus for determining motion sickness status, the apparatus comprising: a signal acquisition unit for acquiring an electroencephalogram signal of a driver; The power value determining unit is used for extracting a power value of a preset characteristic wave band from the electroencephalogram signal, and the power value is positively correlated with the motion sickness degree of the driver and the passenger; and the motion sickness state determining unit is used for determining the motion sickness state of the driver according to the magnitude relation of the power value relative to the baseline reference value.
  12. 12. A computer readable storage medium having stored thereon computer instructions which, when executed by a processor, implement the steps of the method of any of claims 1-10.
  13. 13. A computer program product comprising computer programs/instructions which, when executed by a processor, implement the steps of the method of any of claims 1-10.

Description

Motion state determining method, motion state determining device, storage medium and program product Technical Field One or more embodiments of the present disclosure relate to the field of electronics, and in particular, to a method, an apparatus, a storage medium, and a program product for determining motion sickness status. Background Motion sickness is a common physiological reaction in the driving process, and is essentially caused by signal conflict among vision, vestibular sensation and proprioception, so that passengers produce uncomfortable symptoms such as nausea, vomiting and dizziness. With the popularization of intelligent cabins and automatic driving technologies, the requirements of passengers on riding experience are continuously improved, and industry is urgent to develop an intelligent system capable of monitoring the central nervous state of a user in a noninductive and accurate mode and realizing early warning and integrated intervention so as to fundamentally avoid the trouble caused by motion sickness. In the related art, currently mainstream mitigation measures have significant limitations. The medicine intervention needs to be taken in advance and has side effects, the curative effect of the physical means is not verified, and the traditional seat function belongs to a passive response mode. In recent years, biofeedback type equipment can monitor parameters such as heart rate, but still depends on indirect physiological signals, has response delay, cannot accurately capture the instant state change of central nerves, and further lacks the capability of carrying out dynamic and multi-mode collaborative intervention and emergency guarantee according to the motion sickness severity. Disclosure of Invention In view of this, one or more embodiments of the present disclosure provide the following technical solutions: According to a first aspect of one or more embodiments of the present specification, there is provided a method of determining a motion sickness state, the method comprising: Acquiring an electroencephalogram signal of a driver and a passenger; Extracting a power value of a preset characteristic wave band from the electroencephalogram signal, wherein the power value is positively correlated with the motion sickness degree of the driver and the passenger; and determining the motion sickness state of the driver according to the magnitude relation of the power value relative to the baseline reference value. According to a second aspect of one or more embodiments of the present specification, there is provided an apparatus for determining motion sickness status, the apparatus comprising: a signal acquisition unit for acquiring an electroencephalogram signal of a driver; The power value determining unit is used for extracting a power value of a preset characteristic wave band from the electroencephalogram signal, and the power value is positively correlated with the motion sickness degree of the driver and the passenger; and the motion sickness state determining unit is used for determining the motion sickness state of the driver according to the magnitude relation of the power value relative to the baseline reference value. According to a third aspect of the present description there is provided a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of the method of the first aspect. According to a fourth aspect of the present description, a computer program product comprises a computer program/instruction which, when executed by a processor, implements the steps of the method of the first aspect. Compared with the prior art relying on indirect physiological parameters such as heart rate, the method and the device have the advantages that the defects of response delay and signal indirection are overcome fundamentally by directly acquiring and analyzing the brain electrical signals of drivers and passengers, the state change of the central nervous can be accurately and directly captured by extracting the characteristic wave band power value positively related to the motion sickness degree, objective and instant determination of the motion sickness state is realized by means of real-time comparison with the baseline reference value, and reliable and direct neurophysiologic basis is provided for subsequent accurate early warning and active intervention. Drawings FIG. 1 is a diagram of a system architecture for determining motion sickness status shown in the disclosed embodiments of the present specification; FIG. 2 is a flow chart of a method for determining motion sickness status shown in the disclosed embodiments of the present specification; FIG. 3 is a flow chart of another method of determining motion sickness state shown in the disclosed embodiments of the present specification; FIG. 4 is a schematic block diagram of an electronic device shown in an embodiment of the present disclosure; Fig. 5 is a block