JPH02279440A - Driving abnormal state detecting method - Google Patents

Abstract

PURPOSE:To detect something wrong in driving operation based on a driver's physical condition as well as to obviate an accident by inputting a preset normal driving pattern of each driver into a car-mounted central processing unit at time of driving an automobile, and comparing it with an actual driving pattern. CONSTITUTION:Each driver holds a self-normal driving pattern on an operating system of an automobile in car driving such as accelerator opening, brake operating force, steering angle and wheel pressure or the like as reference data. At the time of car driving, these reference data are inputted into a car- mounted central processing unit. On the other hand, an actual driving pattern at time of car driving is measured by a car-mounted sensor, while these measuring data are inputted into the car-mounted central processing unit as well. Afterward, the reference data are compared with the measured data, while on the basis of this compared result, a driving abnormal state is detected, generating an alarm. With this constitution, something wrong in driving operation based on a driver's physical condition is detected, thus any possible accident is obviated.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for detecting abnormal driving conditions that issues a warning when a vehicle driver drives in a manner that exceeds his or her own safe driving pattern.

(Prior Art) Conventionally, as shown in Japanese Utility Model Application Publication No. 57-15765, a rotation detection switch detects non-rotation of the steering wheel, and the rotation detection switch detects non-rotation of the steering wheel. The steering interruption warning device for an automobile is comprised of an alarm circuit that issues an alarm when it detects that the automobile is running at a speed of A steering interruption warning device for an automobile is known (see FIG. 8).

In the past, safety measures for automobiles were taken immediately after an accident by developing seat belts, air bags, automatic brakes, etc.

(Problems to be Solved by the Invention) According to the above-mentioned prior art, if the driver falls asleep while driving, a buzzer or the like can be used to wake the driver up, but if the driver is not feeling well, It has been difficult to predict and prevent traffic accidents from occurring based on one's own driving patterns such as accelerator, brake, and clutch operations and driving conditions when the driver lacks mental capacity.

(Means for Solving the Problems) The present invention aims to solve the above-mentioned problems, and allows each driver to learn about his or her own operating system of the automobile, such as accelerator opening, brake pedal force, steering angle, and steering wheel pressure. The normal driving pattern is held as data, the above driving pattern is input to the on-board CPU during driving, the actual driving pattern during driving is measured by an on-board sensor and input to the on-board CPU, and both data are compared to determine whether there is an abnormality. The feature is that a warning is issued when a judgment is made.

(Example) The present invention will be explained in detail using FIGS. 1 to 6. FIGS. 1 to 6 show the driving patterns of the driver. FIG. 7 is a block diagram showing a method for detecting an abnormal state of operation.

1. Measurement of Mr. A's driving pattern using on-vehicle sensor (1) (2) ■. Measurement using accelerator opening sensor An accelerator opening sensor or vehicle speed sensor installed on the accelerator pedal or throttle valve is used to measure Mr. A's driving pattern when starting the vehicle. Figure 1 shows the measured acceleration pattern of Mr.

As time progresses, press the accelerator pedal slowly in the early stages, and rapidly in the middle stages.

The final stage shows that the amount of depression is maintained at a constant level.

Through several measurements, the driving pattern within the shaded area in Figure 1 can be obtained as data specific to Mr. A.

(2) Measurement by brake pedal sensor Figure 2 shows Mr. A's deceleration pattern measured during brake operation using a brake pedal force sensor or vehicle speed sensor provided on the brake pedal.

Similarly to the above, the driving turns within the shaded area in Figure 2 can be obtained as data unique to Mr. A.

What appears is the shaded area in Figure 3.

■...Speed...Time (■Measurement by 6 steering sensors [(I!I (Steering angle sensor or steering angular velocity sensor is used.) Vehicle speed vs. steering angular velocity has a vehicle limit in terms of vehicle stability. A
's normal driving pattern falls within the range shown in Figure 4.

(4) Measurement using a steering wheel pressure sensor (a sensor attached to the steering wheel that measures the pressure of gripping the steering wheel is used.) Steering angular speed vs. steering wheel pressure, vehicle speed vs. steering wheel pressure is the fifth
Mr. A has the tendency shown in Figure 6.

2. How to use the above driving pattern (D. The driving pattern measured in 1 can be obtained by calculation such as the average value of several measurements, but the driving pattern can be obtained by using a magnetic card, magnetic disk, LSI, etc.) personal data into the storage medium (3).

Alternatively, a driver's license may be used as the storage medium.

(2) When driving, the driver always brings the above-mentioned magnetic card or magnetic disk or other storage medium with him and inserts it into the on-board CPU to input data (4).

■The in-vehicle CPU constantly compares the vehicle driving data (5) during driving with the above input data, and when the vehicle driving data does not fall within the allowable range of the input data, it issues a warning as an abnormality and warns the driver of dangerous driving. Let them know (6X7).

In addition, the driving pattern in abnormal situations such as when the driver is not feeling well or lacks composure is, for example, when accelerating from a start.
If you suddenly step on the accelerator by stepping off the shaded part of the figure (1), or when decelerating, you should stop suddenly by going beyond the shaded part in Figures 2 and 3.
There is a tendency to delay the application of the brake pedal, or to perform sudden steering, etc., outside of the shaded areas in FIGS. 4 to 6.

(Effects) According to the present invention, each driver retains his/her own normal driving pattern related to the operating system of the automobile such as accelerator opening, brake pedal force, steering angle, and steering wheel pressure as data, and uses the above driving pattern when driving. The system inputs the data into the car's Bcpu, measures the actual driving pattern with an on-board sensor, and then compares both data and issues a warning when it determines that there is an abnormality. Driver's accelerator opening.

If operations such as brake pedal force, steering angle, and steering wheel pressure exceed the driving pattern of each driver, a warning is automatically issued, making it possible to prevent accidents caused by driving operations while driving the vehicle.

[Brief explanation of drawings]

Figure 1 is a measurement diagram of the driving pattern using the accelerator opening sensor, Figure 2 is a diagram of the driving pattern measurement using the brake pedal force sensor, Figure 3 is a measurement diagram of the deceleration pattern during brake operation, and Figure 4 is the steering sensor. Fig. 5 is a pattern measurement diagram of the steering wheel pressure sensor and steering angular velocity, Fig. 6 is a pattern measurement diagram of the steering wheel pressure sensor and vehicle speed, Fig. 7 is a block diagram of the present invention, and Fig. 8 is a pattern measurement diagram of the steering wheel pressure sensor and vehicle speed. The conventional steering interruption warning device is shown in Fig. 1, Fig. 4, Fig. 2, Fig. 5, Fig. 3, and Fig. 6. ◆■Speed i Figure 7 Figure 8

Claims (1)

[Claims] Each driver maintains his/her own normal driving patterns related to the operating systems of the car such as accelerator opening, brake pedal force, steering angle, and steering wheel pressure as data, and inputs the above driving patterns into the on-board CPU when driving. The actual driving pattern of the car is measured by an on-board sensor and
A method for detecting abnormal conditions in operation that inputs data into the PU, compares both data, and issues a warning when it is determined that there is an abnormality.