JPH05112158A - Operating apparatus control device for vehicle - Google Patents

Abstract

PURPOSE:To make operating apparatus function most suitably to the biological conditions of occupants by varying the responsiveness of the operating apparatus according to the biological conditions. CONSTITUTION:An operating apparatus control device has operating apparatus such as an accelerator pedal 5, a brake pedal 7 and a power steering 2 or the like, a biological condition detecting means 9 to detect the number of crewman's heartbeats, an accelerator response varying means 4, a brake response varying means 6, a steering response varying means 1, and a control means 10 to control the above response varying means. The ability of brake response is varied according to the increasing rate of the number of heartbeats in a whole operation range, and an automatic brake is actuated in an urgent case. The ability of accel response is varied into large and small degrees according to the increasing rate of heartbeats at the time of running on a curved road and a mountain road, and operating force is varied according to the ability of steering response into light and heavy degrees at the time of running at high speed and on the mountain road.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle operating device control device for controlling a reaction state of an operating device of a vehicle such as an accelerator pedal, a brake pedal, and a power steering.

[0002]

2. Description of the Related Art As an operation device control device for a vehicle, for example, as disclosed in Japanese Patent Laid-Open No. 2-241868,
It is known that when an occupant operates a steering handle of a power steering, a predetermined assist force is generated for steering the handle according to the operating torque and the vehicle speed.

[0003]

Since the response of the power steering is controlled according to the steering wheel operating torque of the occupant and the traveling state of the vehicle, the torque generated by the steering wheel and the traveling information are irrespective of the biological state of the occupant. Since the same control is performed by the above, when the biological condition of the occupant changes, the response may not match the occupant's intended response.

Accordingly, the present invention provides an operating device control device for a vehicle, which can change the response characteristic of the operating device in accordance with the biological condition of the occupant and perform an optimum operation for the biological condition. ..

[0005]

[Means for Solving the Problems] Operation devices such as an accelerator pedal, a brake pedal, and a power steering, and a living body state detecting means for detecting a living body state represented by a heart rate, a respiratory rate, a blood pressure value, etc. of an occupant, A response varying means for changing the response characteristic to the operation of the operating device, and a judging means for controlling the response varying means are provided, and the operation is performed via the judging means and the response varying means based on the detection signal of the biological state detecting means. The response characteristics of the equipment are controlled.

[0006]

When the living body condition of the occupant is detected by the living body condition detecting means, an operation control signal is output from the judging means to the response varying means based on the detection signal, and the accelerator pedal and the brake are actuated by the operation of the response varying means. The response states of operating devices such as pedals and power steering are changed to characteristics that are optimal for the biological condition of the occupant.

[0007]

Embodiments of the present invention will now be described in detail with reference to the drawings.

In FIG. 1, 1 is a power steering 2
Steering response varying means 4 for controlling the assisting force of the steering wheel 3 to change the operating force of the steering wheel 3 is an accelerator pedal 5
The accelerator response varying means for changing the acceleration of the vehicle by controlling the throttle opening degree, the fuel injection amount, etc. with respect to the depression of the vehicle, 6 controls the hydraulic pressure of the brake booster with respect to the depression of the brake pedal 7, etc. Brake response varying means for changing speed, 8 is vehicle state detecting means for detecting vehicle speed, steering angle, accelerator opening, throttle opening, engine speed, lateral G of the vehicle, inter-vehicle distance, etc., 9 is occupant's heart rate , A biological state represented by a respiratory rate, a blood pressure value, etc., for example, a biological state detecting means for detecting a heart rate, 10 reads information from the vehicle state detecting means 8 and the biological state detecting means 9, and the steering response varying means 1, Accelerator response varying means 4, Brake response varying means 6
The determining means for outputting the control signal is shown in FIG.

FIG. 2 shows the change characteristics of the accelerator response and the brake response in the case of this embodiment. Here, the inclination θ of the acceleration and deceleration with respect to the depression (stroke) of the accelerator pedal 5 and the brake pedal 7 is changed. I am trying.

Regarding the accelerator response, the response characteristic in the normal state shown in FIG. 2a is changed to a predetermined acceleration response characteristic shown in b or c in FIG. 2 according to the biological state when the vehicle is in a certain running state. Let

Regarding the brake response, in contrast to the response characteristic in the normal state shown in FIG. 3A, the change amount characteristic of the inclination θ of the deceleration that changes according to the rate of increase of the heart rate shown in FIG.
Although the inclination θ of the deceleration is changed over the entire driving range of the vehicle according to the living body condition, the heart rate is rapidly increased, and the brake is automatically applied when it is determined to be an emergency.

Regarding the brake response in this embodiment,
As mentioned above, it adapts to the biological condition in the entire operating range of the vehicle, that is, changes the characteristics according to the rate of increase in heart rate, and automatically brakes in an emergency. Is designed to change the characteristics when the vehicle is traveling on a curved road and on a mountain road (continuous curve), and the steering response is changed when the vehicle is traveling at high speed and on a mountain road. Fig. 4 shows the traveling situation of the vehicle and the change situation of the brake response, accelerator response, and steering response.

In the table of FIG. 4, the occupant's heart rate is detected by the biological condition detecting means 9 in the event of an emergency of the vehicle, and the brake response varying means 6 is operated by the determining means 10 to determine the brake response characteristic as the rate of increase of the heart rate. Corresponding to
Apply the automatic brake.

When the vehicle is traveling at high speed, the vehicle state detecting means 8
The vehicle speed is detected by the biological condition detecting means 9, and the occupant's heart rate is detected by the biological condition detecting means 9, and the steering response varying means 1 is operated by the determining means 10 to change the steering operation force in accordance with the increase rate of the heart rate. Let

When traveling on a curved road, the vehicle state detecting means 8 detects the vehicle speed and the steering angle, the living body state detecting means 9 detects an increase in the heart rate of the occupant, and the judging means 10 controls the accelerator response varying means 4. It is actuated to change the accelerator response to a small acceleration inclination characteristic shown by c in FIG.

When traveling on a mountain road, the vehicle state detecting means 8 detects the vehicle speed, the engine speed, the steering frequency, etc., and the living body state detecting means 9 detects the heart rate of the occupant. The variable means 4 and the steering response variable means 1 are operated to change the accelerator response to a large acceleration inclination characteristic shown by b in FIG. 2 and to slightly change the steering operation force in accordance with the increase rate of the heart rate.

Next, the above operation will be described with reference to the flowchart of FIG.

The ignition key switch is turned on to start the engine, the heart rate of the occupant in the normal state is measured by the living body state detecting means 9 and stored in the judging means 10 (step 100). When the vehicle is driven, various information on the vehicle running state detected by the vehicle state detecting means 8 is input (step 101), and in the following step 102, the heart rate of the occupant at that time is detected by the biological state detecting means 9 and input. To be done. In step 103, it is determined whether or not the occupant's heart rate is higher than the normal state, and if negative, the process proceeds to step 105. In the affirmative, the brake response varying means 6 is operated in step 104, and the brake response characteristic is changed according to the rate of increase in heart rate. In step 105, it is judged whether or not the vehicle state and the living body state meet the designated situations in the table shown in FIG. 4, and if the result is negative, the process returns to step 101. If yes, step 1
At 06, the brake response varying means 6, the accelerator response varying means 4, and the steering response varying means 1 are operated in accordance with the designated situation shown in the table of FIG. 4 to change the brake response characteristic, the accelerator response characteristic, and the steering response characteristic.

In the above embodiment, the accelerator response characteristic is changed to a predetermined acceleration gradient according to the rate of increase of the heart rate of the occupant when the vehicle is in a specific running state.
Alternatively, the physiological characteristics of the occupant may be measured at the start of driving the vehicle by inputting information by measuring the heart rate, and may be controlled to have a predetermined accelerator response characteristic that matches the physiological characteristics of the occupant.

Generally, as a physiological characteristic of an occupant, if the acceleration of the vehicle is increased, the biological load is increased and the heart rate is increased. Therefore, for a person who originally has a high heart rate in a normal state, it is possible to reduce the biological load by changing the response characteristics to have a small acceleration gradient.

FIG. 6 is an acceleration characteristic map used for such control, in which the acceleration response coefficient, in this case the inclination .theta. Of acceleration, is obtained using the heart rate of the occupant in the normal state measured at the start of driving as a parameter. It is a thing.
This characteristic map is stored in the judging means 10 of FIG. 1, and when the heart rate at the start of driving of the occupant is measured by the living body state detecting means 9, the accelerator response varying means 4 is operated based on the measured value, As indicated by A, B, and C in FIG. 7, the response characteristics of the ideal acceleration slope are changed to match the physiological characteristics of the occupants A, B, and C. A flow chart of this control program is shown in FIG.

In the flowchart of FIG. 8, when the ignition key switch is turned on and the biological condition detecting means 9 is turned on in step 200, the normal heart rate at the start of operation of the occupant is detected (step 20).
1), in step 202, based on the input information of the heart rate, the acceleration response coefficient θ based on the characteristic map shown in FIG.
Is calculated, and in step 203, the accelerator response varying means 4 is operated to change the response characteristic of the acceleration slope of the acceleration response coefficient θ. This is because, for example, if the occupants B and C are people who originally have a high heart rate, the responsiveness is slower than the default response characteristic A as shown by B and C in FIG. If the person originally has a low heart rate, such as the occupant A, the responsiveness is not changed because the biological load is small even with the acceleration response of the initial setting.

In the following step 204, it is determined whether or not the ignition key switch is off. If the answer is negative, the acceleration response characteristic which has been controlled and changed as described above is maintained (step 205), and if the answer is affirmative, the routine proceeds to step 206. Press to reset the control, return the acceleration response characteristics to the initial settings, and finish.

Although the living body condition of the occupant is detected by the heart rate in each of the above embodiments, it may be the respiratory rate or the blood pressure value.

[0025]

As described above, according to the present invention, the response characteristics of the operating device can be changed according to the biological condition of the occupant, so that ideal operation control suitable for the biological condition of the occupant can be performed. It has a great practical effect of being able to.

[Brief description of drawings]

FIG. 1 is a schematic overall configuration diagram showing an embodiment of a control device of the present invention.

FIG. 2 is a graph showing a relationship between strokes of an accelerator pedal and a brake pedal and vehicle responsiveness in the example.

FIG. 3 is a graph showing a relationship between a heart rate increase rate and brake responsiveness in the example.

FIG. 4 is a table showing the vehicle running condition and response change contents of brake, accelerator, and steering in the same embodiment.

FIG. 5 is a flowchart of an operation control program of the same embodiment.

FIG. 6 is a heart rate-acceleration response coefficient map used in different embodiments of the present invention.

FIG. 7 is an acceleration response characteristic diagram controlled by the embodiment.

FIG. 8 is a flowchart of an operation control program of the same embodiment.

[Explanation of symbols]

1 ... Steering response varying means, 2 ... Power steering, 3 ... Steering wheel, 4 ... Accelerator response varying means, 5 ... Accelerator pedal, 6 ... Brake response varying means, 7 ... Brake pedal, 8 ... Vehicle state detecting means, 9 ... Living body State detection means. 10 ... Judgment means.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location B62D 6/00 9034-3D F02D 29/02 K 9248-3G 45/00 355 8109-3G // B62D 101: 00 137: 00 (72) Inventor Michihiro Katsuragi, 2 Takaracho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd. (72) Yoshiyuki Nagashima, 2 Takara-cho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd.

Claims (1)

[Claims] 1. An operating device such as an accelerator pedal, a brake pedal, a power steering, a biological condition detecting means for detecting a biological condition represented by an occupant's heart rate, respiration rate, blood pressure, etc., and operation of the operating device. Response varying means for changing the response characteristic to the operating condition and a determining means for controlling the response varying means, and the response characteristic of the operating device via the determining means and the response varying means based on the detection signal of the biological state detecting means. The operating device control device for a vehicle is characterized in that