Method and device for diagnosing in a motor vehicle a driver's fitness drive

• US 6,946,966 B2
• Filed: 08/28/2001
• Issued: 09/20/2005
• Est. Priority Date: 08/29/2000
• Status: Expired due to Fees

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Koenig, Winfried
• Primary Examiner(s): MULLEN, THOMAS J
• Application Number:
  US10/111,872
• Publication Number:
  US 20030146841A1
• Time in Patent Office: 1,484 Days
• Field of Search: 340/576, 340/575, 180/272
• US Class Current: 340/576
• CPC Class Codes: A61B 5/18 for vehicle drivers or machine operators
• CPC Class Codes: A61B 5/7264 Classification of physiological signals or data, e.g. using neural networks, statistical classifiers, expert systems or fuzzy systems neural networks per se G06N3/00; expert systems per se G06N5/00
• CPC Class Codes: B60K 28/06 responsive to incapacity of driver
• CPC Class Codes: B60W 2040/0818 Inactivity or incapacity of driver
• CPC Class Codes: B60W 2530/00 Input parameters relating to vehicle conditions or values, not covered by groups B60W2510/00 or B60W2520/00
• CPC Class Codes: B60W 2556/50 of positioning data, e.g. GPS [Global Positioning System] data
• CPC Class Codes: B60W 2720/10 Longitudinal speed
• CPC Class Codes: B60W 40/08 related to drivers or passengers
• CPC Class Codes: G16H 50/20 for computer-aided diagnosis, e.g. based on medical expert systems

Abstract

A method is for diagnosing the driving capability of a driver of a motor vehicle, in which changes in driver condition are ascertained from physiological measured values derived from the driver while driving in the vehicle and evaluated, and if the changes are serious, a warning is issued or remedial actions are initiated, wherein the physiological measured values ascertained while driving in the vehicle are combined by a corresponding expert system with health-relevant data for the driver ascertained in stationary fashion, and with data indicating driver stress that are estimated in particular from the instantaneous traffic situation and instantaneous operating state of the vehicle, and the changes in the driver'"'"'s condition are weighted with the estimated driver stress and interpreted. An apparatus for performing the method is characterized in that the expert system is implemented in an onboard computer of the vehicle which is connected via a bus internal to the vehicle to a mobile driver condition sensor suite that supplies the physiological measured values, to a memory/transfer medium that delivers the biographical data and/or the health-relevant data ascertained in stationary fashion, and to an ACC system and driving direction system internal to the vehicle.

Claims

1. A method for diagnosing a driving capability of a driver of a motor vehicle, comprising the steps of:

ascertaining health-relevant data for the driver obtained while the driver is stationary;

acquiring physiological measured values for the driver while driving in the vehicle;

combining, by an expert system, the physiological measured values with the health-relevant data;

ascertaining changes in a driver condition from the combined physiological measured values and health-relevant data;

estimating a variable indicating a driver stress from data that is one of present and derived in the vehicle concerning an instantaneous traffic situation and an instantaneous vehicle operating state;

weighting and interpreting, by the expert system, the changes in the driver condition with the variable indicating a driver stress in order to detect if the driver is in an impaired condition; and

one of issuing a warning and initiating remedial actions to counteract the driver condition if the weighted and interpreted changes in the driver condition fulfill at least one predetermined criterion pertaining to the impaired condition.

2. The method of claim 1, wherein the physiological measured values include circulatory measured values.

3. The method of claim 2, wherein the circulatory measured values include a pulse rate and a blood pressure of the driver in the vehicle.

4. The method of claim 1, wherein the physiological measured values acquiring step includes the substep of sensing an impedance of a skin of the driver, the physiological measured values including the impedance.

5. The method of claim 1, wherein the physiological measured values acquiring step includes the substep of measuring an electrocardiogram of the driver, the physiological measured values including the electrocardiogram .

6. The method of claim 1, wherein the physiological measured values acquiring step includes the substep of sensing an eyelid blink frequency of the driver, the physiological measured values including the eyelid blink frequency.

7. The method of claim 1, wherein the health-relevant data include physiological data measured while the driver is stationary and biographical data.

8. The method of claim 7, wherein the physiological data include ergometric data measured on an ergometric device.

9. The method of claim 7, wherein the biographical data include at least one of an age, a weight, and a gender.

10. The method of claim 7, wherein if the physiological data measured while the driver is stationary are not present or are not measurable, the health-relevant data include standard values refined using inputted biographical data.

11. The method of claim 10, wherein the inputted biographical data includes a gender, an age, and a weight.

12. The method of claim 1, wherein the health-relevant data include blood analysis values of the driver.

13. The method of claim 12, wherein the blood analysis values include a blood sugar level.

14. The method of claim 1, further comprising the step of calculating the driver stress from a combination of the instantaneous traffic situation and instantaneous operating state data for the motor vehicle, the instantaneous traffic situation estimated from the number, speed, and heading of other vehicles and from relevant driving direction information for the vehicle, the instantaneous operating state data including a heading and a speed of the vehicle.

15. The method of claim 1, further comprising the step of initially performing at least one test drive by the driver during a learning phase before a valid diagnosis of the driving capability is issued, wherein a learning system is used as the expert system, the test drive including a variety of stress levels and traffic situations.

16. An apparatus for diagnosing a driving capability of a driver of a motor vehicle, comprising:

a vehicle-based driver condition sensor suite configured to supply physiological measured values;

a memory/transfer arrangement configured to deliver at least one of biographical and health-relevant data, the data ascertained while the driver is stationary;

a traffic/vehicle monitor arrangement configured to ascertain and transfer an instantaneous traffic situation and an instantaneous operating data of the motor vehicle to an onboard computer of the motor vehicle;

a transmission arrangement configured to transfer a signal to an environment, the signal indicating a driver stress that is inappropriate for the instantaneous traffic situation;

an expert system arranged in the onboard computer; and

a vehicle bus arranged to connect the onboard computer to the vehicle-based driver condition sensor suite, the memory/transfer arrangement, the traffic/vehicle monitor arrangement, and the transmission arrangement.

17. The apparatus according to claim 16, wherein the vehicle-based driver condition sensor suite includes a pulse and blood-pressure meter.

18. The apparatus according to claim 16, wherein the vehicle-based driver condition sensor suite includes a skin impedance sensor.

19. The apparatus according to claim 16, wherein the vehicle-based driver condition sensor suite includes an electrocardiograph.

20. The apparatus according to claim 16, wherein the vehicle-based driver condition sensor suite includes a video camera with a downstream image evaluation system configured to sense and evaluate the driver'"'"'s eyelid blink frequency.

21. The apparatus according to claim 16, wherein the memory/transfer arrangement includes a memory medium and an input/read apparatus connected to the onboard computer and configured to read the memory medium.

22. The apparatus according to claim 21, wherein the memory medium includes a chip card.

23. The apparatus according to claim 16, wherein the traffic/vehicle monitor arrangement includes an ACC system and a vehicle navigation system connected to corresponding sensors.

24. The apparatus according to claim 16, wherein the transmission arrangement includes a radio transmission system.

25. The apparatus according to claim 24, wherein the radio transmission system includes a GSM mobile data radio system.

26. The apparatus according to claim 16, wherein the onboard computer is connected to an access control unit of the vehicle, the access control unit configured to perform an identification of the driver.