Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Sleepiness judging device

A judging device and drowsy technology, applied in medical science, diagnosis, instruments, etc., can solve problems such as inability to judge

Inactive Publication Date: 2010-03-31
TOYOTA JIDOSHA KK
View PDF3 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such strong drowsiness cannot be judged by conventional sleepiness judgment devices.

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Sleepiness judging device
  • Sleepiness judging device
  • Sleepiness judging device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] Hereinafter, embodiments of the drowsiness determination device according to the present invention will be described with reference to the drawings.

[0041] In this embodiment, the drowsiness determination device according to the present invention is applied to a drowsiness occurrence prediction device mounted on a vehicle that predicts the occurrence of a driver's drowsiness state. The drowsiness occurrence predicting device according to this embodiment determines a strong drowsiness state before becoming a drowsy state (a state several minutes to tens of minutes before the drowsiness state will occur) based on heart rate fluctuations. Inform the result of the judgment below.

[0042] Before concretely describing the drowsiness occurrence prediction device according to this embodiment, a method of determining a strong drowsiness state will be described in advance. First, terms used in this embodiment will be described. The heart rate fluctuation is a heart rate fluc...

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

No PUM Login to View More

Abstract

A sleepiness judging device for judging a strong sleepiness before a subject comes to doze. Sleepiness judging device (1) is characterized by comprising a sympathetic parameter acquiring unit (2,11) for acquiring a parameter concerning the sympathetic nerve of a subject, a parasympathetic parameter acquiring unit (2, 11, 16) for acquiring a parameter concerning the parasympathetic nerve of the subject, a sympathetic increase judging unit (13, 14) for judging whether or not the magnitude of the sympathetic parameter is larger than a sympathetic threshold, and a sleepiness judging unit (19) forjudging the sleepiness of the subject from the increase / decrease relation between the sympathetic parameter and the parasympathetic parameter if the magnitude of the sympathetic parameter is judged tobe larger than the sympathetic threshold.

Description

technical field [0001] The present invention relates to a drowsiness judging device for judging drowsiness based on sympathetic nerve activity and parasympathetic nerve activity. Background technique [0002] In order for the driver of the vehicle to drive safely, a device for judging the driver's drowsiness (awakeness) has been developed. As a drowsiness judging device, there are, for example, extracting a feature quantity corresponding to drowsiness based on heart rate, eye blinking, etc., and comparing the feature quantity with a threshold value to determine very strong drowsiness (drowsiness state or a state about to doze off soon) . When extremely strong drowsiness is judged in this way, it is a drowsiness level that affects driving operation (for example, demeanor), and the judgment time lags behind. Therefore, in the device described in Patent Document 1, weak drowsiness is judged based on the low-frequency components of heart rate fluctuations correlated with sympa...

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
no application Login to View More
IPC IPC(8): A61B5/18A61B5/0245G08B21/06G08G1/16
CPCA61B5/18A61B5/02405A61B5/4806A61B5/0245A61B5/4035
Inventor 畠山善幸
Owner TOYOTA JIDOSHA KK
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com