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WO2018111062A1 - Procédé de caractérisation de l'environnement de travail lors de la conduite de véhicules par mesure des vibrations propices à la fatigue - Google Patents

Procédé de caractérisation de l'environnement de travail lors de la conduite de véhicules par mesure des vibrations propices à la fatigue Download PDF

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Publication number
WO2018111062A1
WO2018111062A1 PCT/MX2016/000139 MX2016000139W WO2018111062A1 WO 2018111062 A1 WO2018111062 A1 WO 2018111062A1 MX 2016000139 W MX2016000139 W MX 2016000139W WO 2018111062 A1 WO2018111062 A1 WO 2018111062A1
Authority
WO
WIPO (PCT)
Prior art keywords
vibration
driving
driver
vehicle
fatigue
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/MX2016/000139
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English (en)
Spanish (es)
Inventor
Elvia Isabel KITAZAWA MOLINA
Antonio MARÍN HERNÁNDEZ
Dino Alejandro PARDO GUZMÁN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to PCT/MX2016/000139 priority Critical patent/WO2018111062A1/fr
Publication of WO2018111062A1 publication Critical patent/WO2018111062A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
    • G06Q50/40—Business processes related to the transportation industry
    • G—PHYSICS
    • G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
    • G16Z—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS, NOT OTHERWISE PROVIDED FOR
    • G16Z99/00—Subject matter not provided for in other main groups of this subclass

Definitions

  • the present invention is developed in the field of workload estimation, particularly referring to a method for assessing the marginal effect of the vibratory conditions of the vehicle transmitted to the driver.
  • the detection and monitoring of the fatigue status of a vehicle operator are key to increasing their driving safety.
  • There are two main characteristics that are used to detect fatigue in drivers these are: visible characteristics, such as the driving posture, the state of the eyes, the opening of the mouth, the position of the head; and non-visible characteristics, such as heart rate, heart waves, brain waves and the like.
  • visible characteristics such as the driving posture, the state of the eyes, the opening of the mouth, the position of the head
  • non-visible characteristics such as heart rate, heart waves, brain waves and the like.
  • other parameters external to the driver include the measurement of driving performance, type of work environment, hours of work, noise, vibration, among others.
  • the following brief compilation of patents related to fatigue detection systems found in different databases is shown.
  • the US6998972 patent calculates the workload by means of vehicle, environment and driver's task data. Others, such as CN205405809 and CN1817299, measure the heart rate using a bracelet and watch, respectively.
  • the invention CN 103273882 works with the driving behavior, the CN 103489010 with the detection of the road environment and US20050030184A1 with the behavior of the vehicle, in order to detect any symptoms of fatigue.
  • the CN104318714 patent provides a pre-alert method for the state of deduced driving fatigue according to the monitoring of facial features, eye signals and information on the movement of the driver's head.
  • alarm CN patent 104318714 provides a pre-alert method for deduced driving fatigue status in accordance with the monitoring of facial features, eye signals and information on the movement of the driver's head.
  • alarming the driver also remember to rest after 2 hours of driving or according to a schedule of optimal driving hours.
  • CN patent 102717765 mentions an auxiliary system in the detection of fatigue, wherein said system is composed of a camera to detect type of road and number of times the driver leaves the lane, GPS, season of the year , driving duration, obtaining speed and acceleration control of the vehicle.
  • Figure 1 is a schematic diagram of the system stages. The different variables used to characterize the workload of the driver of a vehicle in different scenarios are shown.
  • Figure 2 is an illustration that specifies where the accelerometers are placed in the seat.
  • Figure 3 is a flow chart of vibration data processing by the processing unit of the patented system.
  • the method starts from the driving scenario [Block 1] where the vehicle is developed.
  • the accelerometers obtain mechanical vibration data present in the back and seat of the person, measured in the different orthogonal axes X, Y, Z [Block 2].
  • the scalar magnitude resulting from the acceleration in the aforementioned axes is obtained [Block 3].
  • the type of wave present in the mechanical movement is determined through the analysis of the accelerometer measurements in the power spectrum [Block 4].
  • a noise sensor inside the cabin and a light sensor outside it obtain relevant information from the stage environment where the driving of the vehicle takes place [Block 5].
  • the information concerning the mechanical vibration is then combined with the environmental levels to, by means of a variable weighting method [Block 6], determine the workload at a specific driving time [Block 7].
  • Figure 2 indicates the positioning of the accelerometers in the driver's backrest [8] and in the driver's seat [9]. Both are connected with a wire to the processing unit of the patented system [10].
  • Figure 3 shows the flow chart with mathematical operations for the values thrown by the accelerometers in the 3 orthogonal axes (X, Y, Z).
  • a resulting acceleration is obtained for each axis (aw), by adding the products of the weighting of each detected frequency (wi) by its corresponding acceleration measured (ai) [Block 11].
  • the magnitude of the resulting vector in each accelerometer (ap) is obtained, by the square root of the product of each resulting acceleration, obtained previously for each orthogonal axis (awx, awy, awz), with its corresponding condition weighting (kx, ky, kz) [Block 12].
  • the resulting Total Acceleration Magnitude (aR) is obtained by the magnitude of the resulting vector of each accelerometer (api and ap2) [Block 13].

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  • Business, Economics & Management (AREA)
  • Health & Medical Sciences (AREA)
  • Economics (AREA)
  • General Health & Medical Sciences (AREA)
  • Human Resources & Organizations (AREA)
  • Marketing (AREA)
  • Primary Health Care (AREA)
  • Strategic Management (AREA)
  • Tourism & Hospitality (AREA)
  • Physics & Mathematics (AREA)
  • General Business, Economics & Management (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Traffic Control Systems (AREA)

Abstract

La présente invention concerne un procédé pour caractériser la charge de travail pendant une période de temps et un lieu spécifiques par l'analyse pondérée des vibrations mécaniques auxquelles est soumis le conducteur, complétant la mesure des niveaux environnementaux correspondants au bruit dans la cabine de conduite et à l'éclairage (par le sol) à l'extérieur de la cabine.
PCT/MX2016/000139 2016-12-15 2016-12-15 Procédé de caractérisation de l'environnement de travail lors de la conduite de véhicules par mesure des vibrations propices à la fatigue Ceased WO2018111062A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/MX2016/000139 WO2018111062A1 (fr) 2016-12-15 2016-12-15 Procédé de caractérisation de l'environnement de travail lors de la conduite de véhicules par mesure des vibrations propices à la fatigue

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/MX2016/000139 WO2018111062A1 (fr) 2016-12-15 2016-12-15 Procédé de caractérisation de l'environnement de travail lors de la conduite de véhicules par mesure des vibrations propices à la fatigue

Publications (1)

Publication Number Publication Date
WO2018111062A1 true WO2018111062A1 (fr) 2018-06-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/MX2016/000139 Ceased WO2018111062A1 (fr) 2016-12-15 2016-12-15 Procédé de caractérisation de l'environnement de travail lors de la conduite de véhicules par mesure des vibrations propices à la fatigue

Country Status (1)

Country Link
WO (1) WO2018111062A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002033529A2 (fr) * 2000-10-14 2002-04-25 Motorola, Inc. Systeme et procede permettant d'ameliorer le comportement d'un conducteur
EP1416349A1 (fr) * 2002-10-31 2004-05-06 General Motors Corporation Estimation de la charge de conduite
WO2007018991A2 (fr) * 2005-08-02 2007-02-15 Gm Global Technology Operations, Inc. Evaluateur adaptatif de la charge de travail des conducteurs
US20120150412A1 (en) * 2010-12-14 2012-06-14 Electronics And Telecommunications Research Institute Driving work load measurement apparatus and method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002033529A2 (fr) * 2000-10-14 2002-04-25 Motorola, Inc. Systeme et procede permettant d'ameliorer le comportement d'un conducteur
EP1416349A1 (fr) * 2002-10-31 2004-05-06 General Motors Corporation Estimation de la charge de conduite
WO2007018991A2 (fr) * 2005-08-02 2007-02-15 Gm Global Technology Operations, Inc. Evaluateur adaptatif de la charge de travail des conducteurs
US20120150412A1 (en) * 2010-12-14 2012-06-14 Electronics And Telecommunications Research Institute Driving work load measurement apparatus and method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
AZIZAN, M.A. ET AL.: "The influence of vibrations on vehicle occupant fatigue", 43RD INTERNATIONAL CONGRESS ON NOISE CONTROL ENGINEERING : IMPROVING THE WORLD THROUGH NOISE CONTROL, INTERNOISE, 20 November 2014 (2014-11-20), pages 1 - 11, XP055495791, Retrieved from the Internet <URL:https://pdfs.semanticscholar.org/5700/3db1abe23c8d54eb5c288585a573ed23e69e.pdf> [retrieved on 20170522] *

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