Real-time monitoring system for fatigue of automobile driver based on human respiration signal

A technology for driver fatigue and breathing signals, which is applied in the evaluation of respiratory organs, diagnostic records/measurement, medical science, etc.

Inactive Publication Date: 2013-09-18
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, there are still many problems in these studies at present, mainly in the contact measurement method, which will affect the driving comfort of the driver; the use of vision-based monitoring methods will be affected by weather conditions, and the price of monitoring equipment is generally relatively high; Multi-signal information fusion technology, the system is too complicated, and misjudgment often occurs

Method used

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  • Real-time monitoring system for fatigue of automobile driver based on human respiration signal
  • Real-time monitoring system for fatigue of automobile driver based on human respiration signal
  • Real-time monitoring system for fatigue of automobile driver based on human respiration signal

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Embodiment Construction

[0027] Such as figure 1 As shown, the overall structure of the vehicle driver fatigue monitoring system based on human respiratory signals in the present invention includes a power supply module 6 connected in sequence, a respiratory signal acquisition module 7 , a microprocessor module 8 and an alarm module 9 . Wherein the power supply module 6 is a vehicle power supply, which provides a 5V DC power supply for the system, and the respiratory signal acquisition module 7 includes a waist belt 3 specially used for monitoring the driver's breathing condition, and a processing circuit connected with the waist belt 3 . The microprocessor module 8 adopts a DSP control chip, and the alarm module 9 utilizes sound and light in combination with an alarm mode.

[0028] Such as figure 2 As shown, the principle structure of the waist belt 3 specially used to monitor the driver's breathing condition is a variable pole pitch capacitive sensor, which consists of two layers of metal electrod...

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Abstract

The invention provides a real-time monitoring system for the fatigue of an automobile driver based on a human respiration signal, and relates to a human respiration signal acquisition and processing device and a respiration signal processing method. A hardware part of the system comprises a power supply module, a respiration signal acquisition module, a microprocessor module and a warning module, wherein the respiration signal acquisition module comprises a waistband made through a variable polar pitch type capacitive sensor, and a corresponding circuit. The respiration signal is processed through the following steps: first, applying an empirical mode decomposition (EMD) to remove a noise signal, and then, performing time-domain analysis on the signal, calculating the respirator wave period and amplitude and the yawn frequency, judging the fatigue condition of the automobile driver according to the monitored change in value, and warning in time.

Description

technical field [0001] The invention relates to a vehicle driver fatigue monitoring system based on human respiration signals, in particular to a collection device for human respiration signals and a respiration signal processing method. Background technique [0002] Traffic accidents caused by fatigue driving account for a very high proportion of all road traffic accidents. How to control fatigue driving and provide timely reminders to drivers who have fatigue is of great significance to reduce the occurrence of road traffic accidents. At home and abroad, the research on fatigue driving of automobile drivers has achieved certain results, mainly through monitoring the driver's physiological signals, and judging whether the driver is fatigue driving through information such as vehicle control and vehicle driving signals, and at the same time through certain devices. Drivers in fatigue state will be reminded in time. However, there are still many problems in these studies at ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/18A61B5/08
Inventor 祝宇虹刘海平
Owner HARBIN INST OF TECH
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