Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
  • A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B5/00—Measuring for diagnostic purposes; Identification of persons
  • A61B5/16—Devices for psychotechnics; Testing reaction times ; Devices for evaluating the psychological state
  • A61B5/18—Devices for psychotechnics; Testing reaction times ; Devices for evaluating the psychological state for vehicle drivers or machine operators
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
  • B60K28/00—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions
  • B60K28/02—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the driver
  • B60K28/06—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the driver responsive to incapacity of driver
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
  • B60K31/00—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator

Definitions

• the invention relates to a system for determining the range of vision, preferably for use in motor vehicles for triggering safety devices and / or risk-reducing measures, according to the preamble of claim 1.
• an optical pulse radar system for this has become known from DE-OS 32 38 139.
• DE-OS 3207 950 a system for measuring optical or acoustic signals for measuring, among other things, the visibility has become known.
• individual factors of the physical field of vision are sometimes measured, but the physiological factors of driver vision are disregarded.
• the present invention has for its object to provide a system of the type mentioned, which measures the physiological visual performance of the driver in a comprehensive manner and the determined values are used to sensitize the triggering of the safety device.
• FIG. 1 shows a schematic of the system with the various inputs or measured values that are received and processed in the system
• FIG. 2 shows a block diagram of the exemplary embodiment described below
• 3 shows a diagram to explain the individual factors which lead to the corresponding input values for the formation of the physical visual range values
• Fig. 4 is a schematic diagram to explain the individual factors that lead to the formation of the physiological visibility values.
• the system for determining the range of vision described below is composed of the two essential devices 10 and 11.
• the device 10 determines and evaluates the following factors, firstly the transmissions resulting from rain, snow, fog, etc., furthermore the real prevailing object contrast - reflective, self-illuminating, unilluminated, dirty etc. - and the illuminating factor of the current scene , namely the ambient brightness, as well as the max. Visibility in the dark and headlights on. It is also provided to include the glare factor in the physical visibility values, which is formed from the intrinsic glare from headlights, from the glare from oncoming traffic and the so-called external glare from the sun.
• the determined values for the physical view width factor (s) are received by an evaluation unit 12 for determining the current driver's view.
• this evaluation unit 12 is now also input the so-called physiological visual performance values of the driver, which are formed from the normal visual performance of the driver's eyes in connection with the value of the ambient brightness, the contrast value or the contrast performance, the glare absorption capacity, the perception ability and the fatigue At fair value.
• the physiological driver vision determined in this way provides information about his driving ability with high accuracy.
• the values determined by individual sensors are received as signals from a microprocessor for measuring and determining the current physiological visual performance of the driver and are compared with the physiological target values of the driver stored in a data memory.
• the or di Values of the current driver's view determined in the evaluation unit 12 are now supplemented by a signal for specifying the object contrast 10a and a signal 10b for the switched-on headlight.
• the overall result of the evaluation unit is received by a so-called hazard computer 13.
• This danger computer 13 is equipped with a memory 13a, in which the road quality factor, the road grip factor and the factors for the target speed, the safety distance, the longitudinal and lateral acceleration, the steering angle and the loading condition are stored.
• the device 10 for determining and calculating the physical range of vision is also assigned one or more sensors for measuring the reflectance and range of vision in fog, snow, rain or smoke, as well as in the case of spray flags and / or the transmission of contaminated windscreens, and a brightness sensor 17.
• a brightness sensor 17 for measuring the reflectance and range of vision in fog, snow, rain or smoke, as well as in the case of spray flags and / or the transmission of contaminated windscreens.
• the brightness sensor 17 and the glare sensor 18 each have a viewing angle which corresponds to that of the human eye. This effectively creates real conditions that fully correspond to the driver's eye.
• the functions of several or all of the devices 10, 11, 12 and 13 are combined in one processor.

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• Health & Medical Sciences (AREA)
• Engineering & Computer Science (AREA)
• Life Sciences & Earth Sciences (AREA)
• Surgery (AREA)
• Mechanical Engineering (AREA)
• Transportation (AREA)
• Veterinary Medicine (AREA)
• Public Health (AREA)
• General Health & Medical Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• Heart & Thoracic Surgery (AREA)
• Chemical & Material Sciences (AREA)
• Molecular Biology (AREA)
• Physics & Mathematics (AREA)
• Combustion & Propulsion (AREA)
• Biophysics (AREA)
• Medical Informatics (AREA)
• Biomedical Technology (AREA)
• Psychiatry (AREA)
• Pathology (AREA)
• Social Psychology (AREA)
• Psychology (AREA)
• Hospice & Palliative Care (AREA)
• Educational Technology (AREA)
• Developmental Disabilities (AREA)
• Child & Adolescent Psychology (AREA)
• Ophthalmology & Optometry (AREA)
• Traffic Control Systems (AREA)
• Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

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Publications (1)

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Cited By (2)

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Citations (6)

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• 1988
  • 1988-03-30 DE DE19883810840 patent/DE3810840C1/de not_active Expired
• 1989
  • 1989-03-20 EP EP19890903716 patent/EP0374204A1/de not_active Withdrawn
  • 1989-03-20 WO PCT/EP1989/000295 patent/WO1989009015A1/de not_active Ceased

Patent Citations (6)

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