JPH06171394A - Constant speed travel maintaining control method - Google Patents

Abstract

PURPOSE:To maintain a safe driving state by computing the travel speed information of the own vehicle in an inter-vehicle distance display device, and in the case of the own vehicle being in danger of colliding with a preceding vehicle, releasing the constant speed travel state automatically to lower the vehicle speed, and at the same time, informing a driver by an alarm buzzer for avoiding operation. CONSTITUTION:During the constant speed travel of the own vehicle, the inter-vehicle distance information between the own vehicle and a preceding vehicle obtained from an inter-vehicle distance measuring device 8, and the speed information of the own vehicle obtained from a sound speed sensor 3 are computed by an inter-vehicle distance display device 9. When an arithmetic circuit 22 judges that the own vehicle is in danger of colliding with the preceding vehicle if the constant speed travel continues as it is, a temporary release relay 13 is operated to release the constant speed travel state for deceleration. At the same time, a driver is informed of the temporary release by the sound of an alarm buzzer 14. Accordingly, even if the driver drives looking off, carelessly or absent-mindedly, the driver is informed of the abnormally approaching state when the own vehicle abnormally approaches the preceding vehicle, so that danger avoiding operation can be performed with a margin.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a constant speed running maintenance control method for keeping a vehicle speed constant.
Especially, based on the information on the distance between the preceding vehicle and the relative speed,
The present invention relates to a constant speed running maintenance control method for automatically preventing a constant speed running maintenance device to help prevent a vehicle collision.

[0002]

2. Description of the Related Art A conventional constant speed running maintenance device (AS) for an automobile.
CD), the driver sets the speed setter in the device to an arbitrary speed at which the vehicle should travel, and then turns on the power SW of the constant speed running maintaining device to run, and resets the constant speed running during this running. By turning on the SW, the traveling speed is maintained at the set speed. Then, at the time of traveling at the set speed, if the driver determines that it is dangerous to continue traveling at a constant speed by judging the distance between the vehicle ahead and other traffic conditions and other traffic conditions, If you operate the temporary release switch or step on the brake pedal or clutch pedal to reduce the traveling speed,
The condition of constant speed traveling is released to avoid danger.

[0003]

However, in such a conventional constant-speed traveling maintaining device, the driver must perform a releasing operation to release the constant-speed traveling state. The person must drive while always checking the front distance of the vehicle. When it is determined that the inter-vehicle distance to the preceding vehicle is in a dangerous distance state, the driver immediately depresses the brake or clutch pedal to operate the switch of the constant speed running maintenance device or operates the temporary release switch. Because it is a structure that requires manual operation by the driver, for example, the driver does a sideways driving,
When the host vehicle is too close to the vehicle in front due to insufficient confirmation of the front, the driver may delay the operation and may collide with the vehicle in front. Even if you are careful enough, you can't avoid Ukkari Bonnyari because humans drive cars. There was a problem.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of such conventional problems, and distance information from an inter-vehicle distance measuring device for detecting an inter-vehicle distance between a preceding vehicle and an own vehicle. And the running speed information of the host vehicle from the vehicle speed sensor is calculated in the inter-vehicle distance display device, and when there is an approaching situation where there is a risk of a rear-end collision, the constant-speed running maintenance state is automatically canceled temporarily to reduce the vehicle speed. And at the same time inform the driver with an alarm buzzer,
(EN) A constant-speed running maintenance control method capable of solving the conventional problems by maintaining a safe driving state by alerting the driver to perform an avoidance operation.

[0005]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing an embodiment of the present invention.

First, the structure will be described. 1 is a constant speed running maintenance control device main body, which is provided in a mission 2 in the constant speed running maintenance control device main body 1 and detects a vehicle speed signal. The vehicle speed sensor 3, the power switch 4 of the constant speed traveling device, the reset switch 5 for maintaining the constant speed traveling, the accelerator control actuator 7 for rotating the rotary drum 6 of the accelerator device, and further mounted on the front surface of the vehicle body. The inter-vehicle distance measuring device 8 and the inter-vehicle distance display device 9 installed in the driver's seat are connected to each other via respective connection cables 10.

Further, in the above-mentioned constant speed running maintaining device 1, the accelerator actuator 7 is controlled so that the speed of the host vehicle is set to a constant speed running state by the constant speed running reset switch 5 in response to the signal from the vehicle speed sensor 3. It sends a signal.

Reference numeral 11 denotes a temporary release switch for temporarily releasing the constant-speed traveling maintaining state. The temporary release switch 11 is provided on the handle portion that the driver can easily operate.

Reference numeral 12 is a release switch similar to the above which is attached to the brake pedal, and this release switch is also provided on a clutch pedal (not shown).

Inside the main body 1 of the constant speed running maintaining device,
A temporary release relay 13 for canceling the constant speed traveling state by judging a dangerous state from the information on the inter-vehicle distance and the information on the own vehicle speed by an arithmetic circuit (not shown) incorporated in the main body 1 is incorporated. Has been. And this temporary release relay 1
When the constant-speed running state is canceled by 3, the alarm buzzer 14 incorporated in the inter-vehicle distance display device 9 specified in FIG. 2 sounds, and the temporary release lamp 15 is turned on.

As shown in FIG. 2, the inter-vehicle distance display device 9 has a warning inter-vehicle distance change switch 16, a inter-vehicle distance display section 17, a display lamp 18, and an alarm sound volume 1.
9, an operation display lamp 20, and a relative speed display section 21 are provided. Reference numeral 22 denotes an arithmetic circuit incorporated in the inter-vehicle distance display device 9.

The structure of this embodiment has been described above. Next, its operation will be described.

When the constant speed running maintaining device 1 is on and the host vehicle is running at constant speed, the inter-vehicle distance information between the host vehicle and the preceding vehicle from the inter-vehicle distance measuring device 8 and the vehicle speed sensor. Vehicle speed information from 3 and an inter-vehicle distance display device 9
If the arithmetic circuit 22 determines that there is a risk of collision with the preceding vehicle if the own vehicle continues to run at a constant speed, the temporary release relay 13 is activated to temporarily cancel the constant speed running state. Slow down. At the same time, the driver is informed of the temporary release by sounding the alarm buzzer 14. The driver, who is alerted by the buzzer, operates the steering wheel to change the lane and decelerates by braking to avoid the risk of a rear-end collision.

If the vehicle-interval distance measuring device 8 detects that the vehicle-interval distance with the preceding vehicle ahead is safe and proper when the vehicle speed accelerates again after avoidance and becomes higher than the vehicle speed before being released. For example, the temporary release relay 13 in the main body 1 of the constant speed traveling maintaining device is automatically turned off, and the traveling speed initially set can be maintained.

The inter-vehicle distance at the time of temporarily canceling the constant-speed traveling is determined by the engine brake of the vehicle and the position of the transmission. In other words, it is not set by the driver arbitrarily, but is set by the inter-vehicle distance display device 9 of each vehicle.

After avoiding the deceleration by the driver by the brake, it is completely released. Therefore, after the re-acceleration, the reset switch 5 is operated to reset to the constant speed traveling state.

In this way, by adopting the constant speed running maintenance control method of the present embodiment, even if the driver looks aside, or if he / she is in a squeaky / bonny operation, the constant speed running state is released when the vehicle approaches the preceding vehicle abnormally. The driver is informed of the abnormal approaching state at the same time when the vehicle is decelerated and decelerated, so that the risk avoidance operation can be performed with a margin.

[0019]

As described above, according to the present invention, the structure of the constant speed running maintenance control device main body 1 is used, the information on the inter-vehicle distance and the relative speed from the inter-vehicle distance display device 8, and the vehicle speed sensor. A circuit 22 for performing calculation using the information on the own vehicle speed from 3 is provided, and when a preceding vehicle is approached at an abnormal relative speed at a predetermined inter-vehicle distance, the constant speed traveling state is automatically canceled at the same time. Since this is a constant-speed running maintaining control method that sounds an alarm buzzer 14 for alerting the driver to perform a risk avoidance operation, the constant-speed running maintaining device 1 is used to comfortably drive on a highway or the like. When you are driving, you may be admired by vague driving or scenery, or if you approach the preceding vehicle in front of you due to a sudden collision, the constant speed driving state will be automatically canceled temporarily of Since it is possible to operate with plenty of time to avoid a steep, you can prevent problems that may cause an accident by colliding with the past or performing sudden braking operation or sudden steering operation when you feel danger. The effect of being able to be obtained is obtained.

Further, according to the present invention, when the driver avoids the danger of collision by performing an avoiding operation such as a steering wheel operation immediately after the alarm for canceling the constant speed running state is issued, the constant speed running state is temporarily released. If the driver operates the accelerator pedal and keeps the vehicle speed above the speed before collision avoidance again and there is no obstacle (vehicle) with a dangerous inter-vehicle distance ahead, Since the speed of the vehicle can be restored to the traveling speed, the troublesome operation of the constant speed traveling reset switch is eliminated, and the driving operability is improved.

[Brief description of drawings]

FIG. 1 is a structural schematic view of an embodiment of the present invention.

FIG. 2 is an external view of an inter-vehicle distance display device according to an embodiment of the present invention.

FIG. 3 is an explanatory diagram of a vehicle equipped with each device of the embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Constant speed running maintenance device main body 2 ... Mission 3 ... Vehicle speed sensor 4 ... Constant speed running device power switch 5 ... Reset switch 6 ... Rotating drum 7 ... Accelerator control actuator 8 ... Inter-vehicle distance measuring device 9 ... Inter-vehicle distance display device 10 ... Connection cable 11 ... Release switch 12 ... Release switch 13 ... Temporary release relay 14 ... Alarm buzzer 15 ... Temporary release lamp 16 ... Changeover switch 17 ... Inter-vehicle distance display 18 ... Display lamp 19 ... Warning sound volume 20 ... Operation display lamp 21 … Relative speed display 22… Operation circuit

Claims (2)

[Claims] 1. A constant speed running maintaining method for running a vehicle at a constant speed, wherein a relative speed at which a preceding vehicle running ahead of the host vehicle is in danger of collision in engine braking operation. In addition, when approaching at an inter-vehicle distance, the arithmetic circuit determines that the inter-vehicle distance and the relative speed information from the inter-vehicle distance display device is a dangerous inter-vehicle distance and automatically cancels the constant speed running state temporarily. At the same time, the alarm buzzer sounds and the temporary release lamp is lit to alert the driver to the driving and perform a driving operation for safety avoidance. . 2. The constant speed running maintenance control method according to claim 1, wherein the driver avoids the danger of collision by performing an avoiding operation such as a steering wheel operation immediately after the alarm for canceling the constant speed running state is issued. In this case, the constant-speed driving state is only temporarily released, and the driver operates the accelerator pedal to maintain the vehicle speed at a speed equal to or higher than the speed before the collision avoidance, and an obstacle with a dangerous inter-vehicle distance ahead. When there is no (vehicle), the constant speed running maintenance control method is characterized in that the speed of the vehicle is restored to a constant running speed before being released.