CN112550282A

CN112550282A - Warning method and warning system for motor vehicle

Info

Publication number: CN112550282A
Application number: CN201910846501.4A
Authority: CN
Inventors: 王厚明; 狄新辉; 尤欢; 许俊
Original assignee: Continental Tamic Automotive Systems Shanghai Co ltd
Current assignee: Continental Zhixing Technology Shanghai Co ltd
Priority date: 2019-09-09
Filing date: 2019-09-09
Publication date: 2021-03-26

Abstract

The invention relates to a warning method and a warning system. The warning method comprises the following steps: acquiring environment information (S01); processing the acquired environment information and determining from the environment information: whether a dangerous situation exists (S02); if it is determined that there is a dangerous situation, an outside alarm is issued outside the vehicle (S04).

Description

Warning method and warning system for motor vehicle

Technical Field

The invention relates to a warning method and a warning system for a motor vehicle.

Background

In the automotive field, safety is receiving increasing attention. Especially when environmental conditions limit the driver's view or the pedestrian's view, dangerous situations may arise. The motor vehicle is then required to automatically take countermeasures.

CN106043123A discloses a vehicle-mounted real-time road condition monitoring display instrument, which comprises an ultrasonic imaging sensor, a control module, a holographic display instrument and an alarm. The ultrasonic imaging sensor acquires distance information between the vehicle and an obstacle around the vehicle body. The control module is used for processing signals collected by the ultrasonic imaging sensor, and comprises synthesis of holographic images and calculation of barrier distances. The holographic display instrument is used for displaying the holographic image around the vehicle body synthesized by the control module. The alarm gives out alarm prompt sound. The system can effectively provide road condition information around the vehicle for a driver under the conditions of poor sight such as backing, blind areas with sight, rainy and snowy weather at night and the like.

CN106601029A discloses a front collision early warning method and system based on curve self-adaptation. Whether the target vehicle and the vehicle are in the same lane or not is judged by judging whether the distance between the target vehicle and the vehicle transverse coordinates is within the set lane width, so that the false alarm condition that the vehicles in the side lanes are listed as early-warning vehicles is avoided. Meanwhile, the predicted track of the vehicle is used as the longitudinal axis of the local coordinate system, so that the longitudinal axis of the local coordinate system can automatically change along with the road shape, and the front collision early warning system can adapt to the curve scene.

However, the prior art only focuses on the safety of the vehicle itself and warns the vehicle driver or generates a warning signal, but does not provide safety cues to pedestrians or related vehicles outside the vehicle.

Disclosure of Invention

Therefore, the technical problems to be solved by the invention are as follows: a warning method and a warning system for a motor vehicle are proposed, with which an improved road traffic safety of the motor vehicle can be achieved at low cost.

The invention provides a warning method for a motor vehicle, which comprises the following steps: acquiring environmental information; processing the acquired environment information and determining from the environment information: whether a dangerous condition exists; and if the dangerous condition is judged to exist, an external alarm is sent out to the outside of the vehicle.

By utilizing the warning method, the warning can be automatically sent out, so that the oncoming vehicle or the pedestrian is warned when dangerous conditions possibly exist, and the collision is avoided when the vehicle passes a curve and the like. Here, the warning function for the outside can be realized at low cost by using the components (such as a navigation system, a horn, a lamp, and the like) that the automobile has, thereby further improving the road traffic safety of the vehicle.

In a preferred embodiment, the external alarm comprises one or more of the following: acoustic alarm, optical alarm, vehicle-to-X communication information.

In a preferred embodiment, the acoustic alarm is emitted by means of a horn or a vehicle loudspeaker of the motor vehicle; the optical alarm is emitted by a headlight, a turn signal lamp or a flashlight of the motor vehicle.

In a preferred embodiment, the method comprises: and selecting a proper external alarm according to the determined dangerous condition.

In a preferred embodiment, the method further comprises: acquiring the dynamic information of the motor vehicle and judging whether dangerous behaviors of the motor vehicle exist or not according to the dynamic information; if the dangerous behavior of the motor vehicle is judged to exist, an external alarm is sent out of the vehicle, and the dynamic information comprises one or more of the following information: the speed, longitudinal acceleration, lateral acceleration, and yaw rate of the vehicle.

In a preferred embodiment, the acquiring the environmental information includes: the method comprises the steps of obtaining road trend information and/or sign information by using an electronic map and/or obtaining the road trend information and/or the sign information by using a vehicle-mounted sensor.

In a preferred embodiment, the vehicle-mounted sensor comprises a camera, or a sound wave sensor, or a radar sensor, or an infrared sensor.

In a preferred embodiment, the hazardous condition includes one or more of the following: road curvature exceeds limits, road grade exceeds limits, heavy fog weather, presence of school or kindergarten ahead.

In a preferred embodiment, the hazardous condition includes one or more of the following: there is a possibility of collision, vehicle instability.

In a preferred embodiment, the method further comprises: in the case where it is determined that a dangerous situation exists, a warning is given to the vehicle driver or a device of the vehicle is actively operated to avoid the danger.

The invention also relates to a warning system for a motor vehicle, comprising: the environment detection device is used for acquiring environment information; an information processing device for processing the acquired environment information and determining, from the environment information: whether a dangerous condition exists; the warning system implements the warning method according to the invention.

Drawings

Fig. 1 shows a possible traffic hazard situation.

Fig. 2 shows a schematic flow diagram of an alerting method according to the present invention.

Detailed Description

The warning method and warning system according to the present invention will be described below by way of specific embodiments with reference to the accompanying drawings. The exemplary embodiments, however, may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.

Fig. 1 shows a possible traffic hazard situation. In which the motor vehicle is in front of a curve with a greater curvature and where a forest is present. The forest not only shields the sight of the driver of the motor vehicle, but also shields the sight of other traffic participants. The motor vehicle and other traffic participants cannot see each other, so that accidents are easily caused. Alternatively, there are dangerous situations of road traffic at this time.

Fig. 2 shows a schematic flow diagram of an alerting method according to the present invention. First, in step S01, environment information is acquired. Preferably, the road direction information and/or the sign information is acquired using an electronic map. In this case, curves or other situations affecting the driver's field of vision can be detected using the electronic map. The road section in front of which the dangerous condition may exist, such as a school or a kindergarten, can be identified through the sign information marked in the electronic map.

In addition, the environmental information may also be acquired by an in-vehicle sensor. The vehicle-mounted sensor may include a camera, or a sound wave sensor, or a radar sensor, or an infrared sensor, etc. For example, an environment image may be captured by an in-vehicle camera, and a curve, a sight line obstruction, or the like in a road may be recognized through analysis of the image. Sign information can likewise be recognized by image analysis. Information from the electronic map may be replaced with information from the in-vehicle sensors. Of course, the information from the vehicle-mounted sensors may also be verified or supplemented as redundant information from the electronic map.

In step S02, the acquired environmental information is processed and it is determined from the environmental information that: whether a dangerous situation exists. The hazardous condition includes one or more of the following: road curvature exceeds a limit (see fig. 1), road grade exceeds a limit, fog weather, presence of a school or kindergarten ahead. For example, the electronic map is used to acquire the road direction information to determine whether a curve with a large curvature exists ahead, and if so, it is determined that a dangerous situation exists. And judging whether a school or a kindergarten exists in front or not by utilizing the environment information, and if the school or the kindergarten exists and is in the school or school time, determining that a dangerous condition exists.

If it is determined in step S02 that there is no dangerous situation, it goes to step S03. In step S03, the dynamics information of the vehicle itself is acquired and it is determined whether there is a dangerous behavior of the vehicle itself based on the dynamics information. The dynamics information includes: the speed, longitudinal acceleration, lateral acceleration, yaw rate, etc. of the vehicle. For example, if the yaw rate or the lateral acceleration of the vehicle exceeds a limit value, it is determined that there is a dangerous behavior of the vehicle itself.

In the present invention, step S03 is optional, that is, this step may not be provided.

If it is determined in step S02 that there is a dangerous situation or if it is determined in step S03 that there is dangerous behavior of the maneuver itself, it goes to step S04. In step S04, an outside alarm is issued outside the vehicle.

The external alarm may be an acoustic alarm which is emitted using a horn or a vehicle speaker of the vehicle. The external alarm may also be an optical alarm which is emitted by means of a headlight or a turn signal or a flashing light of the motor vehicle. The external alert may also contain vehicle-to-X communication information.

In a preferred embodiment, the appropriate outbound alert is selected based on the determined hazardous condition. For example, an acoustic alarm is issued in a dangerous situation where the line of sight is blocked. An optical alarm is issued at night or in a dim scene. And when the dangerous object is detected to be the vehicle, sending alarm information to the opposite vehicle through vehicle-to-vehicle communication.

Preferably, the method is performed cyclically at certain intervals. For example, it is cyclically executed at time intervals of 0.1 second.

Other embodiments of the present invention will readily suggest themselves to such skilled persons having the benefit of this disclosure. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

Claims

1. A warning method for a motor vehicle, the warning method comprising:

the environmental information is acquired (S01),

processing the acquired environment information and determining from the environment information: whether a dangerous situation exists (S02),

if it is determined that there is a dangerous situation, an outside alarm is issued outside the vehicle (S04).

2. The warning method according to claim 1, wherein the external alarm comprises one or more of the following alarms: acoustic alarm, optical alarm, vehicle-to-X communication information.

3. The warning method according to claim 2, wherein the acoustic alarm is emitted using a horn or a vehicle speaker of the motor vehicle; the optical alarm is emitted by a headlight, a turn signal lamp or a flashlight of the motor vehicle.

4. The warning method according to claim 2, wherein the method comprises: and selecting a proper external alarm according to the determined dangerous condition.

5. The warning method according to claim 1, further comprising: acquiring the dynamic information of the motor vehicle and judging whether dangerous behaviors of the motor vehicle exist or not according to the dynamic information; if the dangerous behavior of the motor vehicle is judged to exist, an external alarm is sent out of the vehicle, and the dynamic information comprises one or more of the following information: the speed, longitudinal acceleration, lateral acceleration, and yaw rate of the vehicle.

6. The alerting method of claim 1 wherein obtaining environmental information comprises: the method comprises the steps of obtaining road trend information and/or sign information by using an electronic map and/or obtaining the road trend information and/or the sign information by using a vehicle-mounted sensor.

7. The warning method according to claim 6, wherein the vehicle-mounted sensor comprises a camera, or a sound wave sensor, or a radar sensor, or an infrared sensor.

8. The method of warning of claim 1, wherein the hazardous condition comprises one or more of: road curvature exceeds limits, road grade exceeds limits, heavy fog weather, presence of school or kindergarten ahead.

9. The warning method of claim 5 wherein the hazardous condition comprises one or more of: there is a possibility of collision, vehicle instability.

10. The warning method according to claim 1, further comprising: in the case where it is determined that a dangerous situation exists, a warning is given to the vehicle driver or a device of the vehicle is actively operated to avoid the danger.

11. A warning system for a motor vehicle, the warning system comprising:

an environment detection device for acquiring environment information,

an information processing device for processing the acquired environment information and determining, from the environment information: whether or not a dangerous situation exists and whether or not,

it is characterized in that the preparation method is characterized in that,

the warning system implementing the warning method according to any one of claims 1-10.