CN108284835A - The device and method and motor vehicles of adaptive-feedrate adjustment for vehicle - Google Patents

Abstract

In order to preferably make the functional adaptation of ACC (" adaptive learning algorithms ") system in current traffic, propose a kind of equipment of the adaptive-feedrate adjustment for vehicle, there are the equipment one or more sensors for the speed for determining the object being located in detection zone, the wherein spatial dimension of detection zone can specify manually.In the correlation method for the adaptive-feedrate adjustment of vehicle, wherein determining the speed of the object in detection zone using sensor, and make the velocity adaptive of vehicle in the speed of object.The spatial dimension of detection zone is manually specified in the method.

Description

Device and method for adaptive speed control of a vehicle and motor vehicle

technical field

The invention relates to an arrangement for adaptive speed control of a vehicle.

Background technique

Devices for adaptive speed control of motor vehicles (also referred to as adaptive cruise control systems (hereinafter referred to as “ACC systems”)) are used in various vehicles. Such a controller can control a predetermined travel speed and/or a predetermined distance from a vehicle in front or an object located in the direction of travel due to appropriate operation of the engine or brakes without driver intervention. (such as obstacles).

Only sensor information of the vehicle itself (on-board sensors) and not other information such as satellite data, signals of other vehicles or information about the driving route is used for adaptive speed control. In some cases, other parameters may be considered, such as weather and visibility conditions.

ACC systems can improve road safety because the driver is relieved of routine tasks such as monitoring speed, acceleration and braking, and can better focus on traffic events.

A problem with currently used ACC systems is the limited detection area, which means that only objects such as other vehicles or obstacles positioned directly in front of the ACC-equipped vehicle (eg in the same traffic lane) are sensed.

FIG. 1 shows the detection area of such a conventional ACC system equipped with a vehicle A. As shown in FIG. The ACC system can only detect vehicle B ahead in the same lane, because the detection area of the ACC system is limited to the lane of vehicle A.

If the vehicle C originally traveling on the adjacent traffic lane changes lanes, that is, the vehicle C enters between the vehicle A and the vehicle B in the traffic lane of the vehicle A, the ACC system reacts to the sudden braking of the vehicle A, which results in a uncomfortable driving conditions for the driver and passengers. The risk of a rear collision for vehicles traveling behind vehicle A is also increased.

As a result, this may cause the driver of vehicle A to deactivate the ACC system in order to avoid similar uncomfortable situations.

In addition, the reaction speed of the ACC system may be perceived as too slow; i.e., the vehicle braking produced by the ACC system appears to the driver too late, because the driver of vehicle A, for example, through an indicator signal, a steering movement or a change in the direction of travel The vehicle C and its intention to change lanes have been sensed earlier than the ACC system.

This earlier perception can also have the effect that the driver of vehicle A will actuate the brake pedal as soon as the driver notices vehicle C's intention to change lanes. However, actuating the brake pedal may cause the ACC system to be turned off, and thereby impair driving safety.

In order to reduce or overcome this problem, as shown in Figure 2, it has been found that extending the detection area to eg adjacent traffic lanes does not lead to an improvement. The ACC system of vehicle A will then indeed be able to detect vehicles C and D, but the ACC system will now no longer be able to perceive vehicle B because vehicles C and D have been seen as obstacles in the first place.

This causes the speed of vehicle A to adapt to the speeds of vehicles C and D, although this is not necessary and can impede traffic flow.

Contents of the invention

It can thus be seen that there is a need to provide an apparatus and method for adaptive speed control with which the stated problems do not arise, or only in which range is substantially reduced, and the ACC system functions better adapted to the traffic conditions at the time.

An aspect of the various forms of embodiment is based on the realization that if the ACC system of a vehicle is configured such that, through driver-implemented input, the ACC system can change from a normal mode of operation in which the ACC system only detects objects directly in front of the vehicle to once Changed operating modes in which objects to the left and/or right of the vehicle are also detected when the driver perceives objects that require the attention of the ACC system and that would not be detected by the ACC system in normal operating mode, traffic safety can be improved improve.

According to the invention, for this purpose a device for adaptive speed control of a vehicle is proposed, which has one or more sensors for determining the speed of an object located in a detection zone (ACC system), wherein the space of the detection zone Ranges can be specified manually.

In this case, "specifiable" means that the spatial extent of the detection area can be enlarged or reduced. The spatial extent of the detection range can, for example, be enlarged or reduced in the plane of travel of the vehicle along the direction of travel of the vehicle or perpendicularly to the direction of travel of the vehicle.

"Manually specifiable" means that the specification is not made automatically based on predetermined or predeterminable criteria (like, for example, vehicle speed or the type of road selected (motorway, main road, urban traffic, etc.) operations performed by a human (for example, by a driver). This operation can be performed, for example, by actuating an input device such as a switch or a button, or by voice control (since the person orally issues a corresponding command that is or can be translated by the ACC system), or by a control unit connected to it .

In an ACC system, detection of objects in a detection zone may be performed, for example, by on-board radar, by one or more cameras on or within the vehicle, or by other suitable means associated with the vehicle.

The speed of the vehicle equipped with the ACC system according to the invention is adapted to the speed of possible objects in the detection area, such as other vehicles.

In one embodiment of the device according to the present invention, the spatial extent of the detection area can be manually designated by the driver according to the traffic situation perceived by the driver.

Since the driver is usually able to assess the current traffic situation better than sensors that can be arranged on the vehicle, the driver can specify the detection area of the ACC system in a more suitable manner, ie better adapted to the traffic situation. For example, the driver can detect the intention of a vehicle in an adjacent traffic lane to change lanes more quickly than an ACC system, can react accordingly more rapidly and can, based on his Perception manually specifies the spatial extent of the detection area.

The above-mentioned disadvantages can thus be reduced and traffic safety increased for all road users. For example, the ACC system may have more time to adapt the speed of the vehicle in which the ACC system is installed to the speed of the detected object so that abrupt braking, which may be uncomfortable for the driver and any other vehicle occupants, may be avoided. From the driver's point of view, for example, the ACC system may appear to be more responsive and sensitive, and more appropriate to the traffic situation (eg, traffic flow), without the driver having to actuate the brake pedal to turn the ACC system off.

In addition, an ACC system designed as described above can provide the driver with more control over driving conditions. Because the reaction of the ACC system is more predictable, the driving behavior of the vehicle can be completely improved.

According to a variant embodiment, the spatial extent of the detection area on the right and/or left side of the traveling direction of the vehicle may be designated or manually designated. The possibility of a detection area that is better adapted to the current traffic situation can thus arise.

For example, the spatial extent of the detection field to the left in the direction of travel can be expanded or enlarged. This can be advantageous, for example, if a vehicle equipped with an ACC system is using the right-hand lane and other vehicles from the left must be merged into the vehicle's lane as the road narrows from two lanes to a single lane. Corresponding embodiments may involve designating the spatial extent of the detection area to the right of the direction of travel or to the right and left of the direction of travel.

When approaching a crossroad or a T-junction, the spatial extent of the detection zone to the right and/or left in the direction of travel can also be indicated, so that for example the ACC system can detect, for example, turning in from the right and/or Vehicle on the left.

An input device arranged on the right side of the driver (for example, an input device arranged on the right side of the steering wheel) may be provided, for example, to manually designate the spatial range of the detection area on the right side of the traveling direction of the vehicle. The input device arranged to the left of the driver can be provided, for example, for manually specifying the spatial extent of the detection region to the left in the direction of travel of the vehicle. For example, buttons or switches are possible input devices.

According to a variant embodiment, the spatial extent of the detection area may be assignable or assignable through an input device arranged on the steering wheel. This allows, for example, the most intuitive specification of the spatial extent by the driver, since the driver can quickly reach the input device.

A motor vehicle according to the invention comprises one of the described devices for adaptive speed control of a vehicle.

In the method for adaptive speed control of a vehicle according to the invention, the speed of an object located eg in a detection zone of another vehicle is determined using a sensor, and the speed of the vehicle is adapted to the speed of the object. The spatial extent of the detection area is manually specified here.

Apart from this, reference is made to the above explanations in relation to the device according to the invention, which are correspondingly transferred to the method according to the invention.

Description of drawings

The present invention will be explained in more detail below with reference to exemplary embodiments. In the attached picture:

Fig. 1 shows a schematic diagram of the spatial extent of the detection area of the ACC system according to the prior art;

Fig. 2 shows a schematic diagram of the spatial extent of the expanded detection area of the ACC system according to the prior art;

Fig. 3 shows a schematic diagram of the spatial extent of the detection area of the ACC system that can be manually specified according to the present invention;

Figure 4 shows a schematic view of a steering wheel with input devices.

Detailed ways

As required, detailed embodiments of the present invention are disclosed herein. It is to be understood, however, that the disclosed embodiments are merely exemplary of the invention that may be embodied in various and alternative forms. The drawings are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention.

In the example explained below, reference is made to the accompanying drawings which form a part hereof, and in which are shown embodiments in specific forms to which the invention can be applied, for purposes of illustration. In this regard, directional terms such as "right", "left", "forward", "backward", "front", "rear", etc. are used from the perspective of the driver of vehicle A with reference to the direction of travel of the illustrated vehicle. the term. This directional term is used as an illustration and not as a limitation. Identical or similar elements in the drawings are given the same reference numerals where appropriate.

It is obvious that other forms of embodiments may be utilized and structural or logical changes may be made without departing from the scope of the present invention. It is obvious that the features of the different exemplary forms of embodiments described herein can be combined with each other unless otherwise stated. Therefore, the following detailed description should not be interpreted in a limiting sense, and the protection scope of the present invention is defined by the appended claims.

As already explained at the outset, FIG. 1 shows the spatial extent of a detection zone 1 of an ACC system in a vehicle A according to the prior art, which is limited to the roadway 3 , ie the roadway 3 m of the vehicle A. As shown in FIG. The ACC system of vehicle A can thus only determine the speed of vehicle B and adjust the speed of vehicle A according to the speed of vehicle B.

On the other hand, vehicles C and D are located outside the spatial extent of the detection area 1 and thus are not detected by the ACC system. If vehicle C now changes lane 3 from right lane 3r to central central lane 3m, the ACC system reacts to sudden braking of vehicle A, which leads to the disadvantages explained at the outset.

As shown in Figure 2, the general expansion of the spatial extent of the detection area 1 on the left and right sides of the direction of travel a of vehicle A is not suitable to avoid these disadvantages, because now the ACC system of vehicle A can only detect vehicles C and D and identified as obstacles. As a result, the speed of vehicle A is adapted to the speeds of vehicles C and D. However, this is not necessary, but rather a hindrance to the flow of traffic, since vehicles C and D travel on different lanes 3r, 31 respectively, and the speed of vehicle A should actually be adapted to the speed of vehicle B.

FIG. 3 shows the spatial extent of detection areas 1 , 2 of a manually specifiable ACC system according to the invention, equipped in this example with a vehicle A moving in the direction of travel of a central central lane 3 m.

The vehicle B moving in the direction of travel b is traveling on the same traffic lane 3 m ahead of the vehicle A. The vehicle C is traveling in the traveling direction c on the front right side of the vehicle A on the traffic lane 3r located on the right side from the perspective of the driver of the vehicle A. Vehicle C is about to change from the right traffic lane 3r to the central central lane 3m. Furthermore, the vehicle D on the left-hand traffic lane 31 is traveling in the direction of travel d without intending to change lanes.

The spatial extent of the detection area 1 of the ACC system of vehicle A is initially limited to 3m in the central central lane. However, once the driver of vehicle A perceives (for example, from an indicator signal) the driving situation of vehicle C's intention to change lanes, he can manually expand the spatial extent of the extended detection area 2 . In this example, it is manually expanded to the right side of the traveling direction of the vehicle A.

As shown in FIG. 4 , in this example the spatial extent of the detection areas 1 , 2 can be specified via an input device 5 arranged on the steering wheel 4 , wherein the input device 5 can be a button. The spatial extent of the detection regions 1 , 2 to the right of the direction of travel a of the vehicle A can be specified via an input device 5 arranged on the driver's right steering wheel 4 .

After the expansion of the spatial extent of the extended detection area 2 , the vehicle C changing the lane 3 can now also be detected by the ACC system of the vehicle A (for example by means of on-board radar, one or more cameras or other suitable means). It is thereby possible to more quickly take into account the speed of vehicle C and adjust the speed of vehicle A appropriately. Avoid sudden braking and increase traffic safety.

After the vehicle C changes lanes, the spatial extent of the expanded detection area 2 can, for example, be reduced again to the original spatial extent of the detection area 1 limited to the central central lane 3m.

While exemplary embodiments are described above, it is not intended that these embodiments describe all possible forms of the invention. Rather, the words used in the specification are words of description rather than limitation, and it is understood that various changes may be made without departing from the spirit and scope of the disclosure. Additionally, the features of various implementing embodiments may be combined to form further embodiments of the invention.

Claims (14)

1. a kind of adaptive-feedrate adjustment system of vehicle, including：

One or more sensors, one or more of sensors determine the speed for the object being located in detection zone；And

Equipment, the device configuration are to expand the spatial dimension of detection zone in response to the input from driver.

2. adaptive-feedrate adjustment system according to claim 1, wherein the spatial dimension of the detection zone from It is identified as indicating traffic in the input.

3. adaptive-feedrate adjustment system according to claim 1, wherein the vehicle direction of travel right side and The spatial dimension of the detection zone in left side can be specified according to the input.

4. adaptive-feedrate adjustment system according to claim 3, wherein in the institute of the direction of travel of the vehicle State right side the detection zone the spatial dimension can by be arranged in the driver right side the first input unit Lai It manually specifies, and the spatial dimension of the detection zone in the left side of the direction of travel of the vehicle It can be specified by the secondary input device for being arranged in the left side of the driver.

5. adaptive-feedrate adjustment system according to claim 4, wherein the spatial dimension of the detection zone can It is specified by the input unit being arranged on the steering wheel of the vehicle.

6. a kind of vehicle, including：

Adaptive cruise control system, the adaptive cruise control system include the speed for determining the object being located in detection zone The sensor of degree；

Steering wheel, the steering wheel have the input control device being disposed thereon；And

Controller, the controller be configured in response to from the input control device received signal by the detection zone Spatial dimension is expanded to the right side and left side of direction of travel.

7. vehicle according to claim 6, wherein the spatial dimension of the detection zone can by driver according to by The traffic of driver's perception is manually specified.

8. vehicle according to claim 6, wherein the input unit is disposed on the steering wheel on the right side of driver Sentence the right side that the spatial dimension of the detection is expanded to the direction of travel.

9. vehicle according to claim 6, wherein the input unit is disposed on the steering wheel on the left of driver Sentence the left side that the spatial dimension of the detection is expanded to the direction of travel.

10. a kind of method for operating the adaptive-feedrate adjustment system of vehicle, including：

The speed of object is determined via sensor；

The spatial dimension for manually specifying the detection zone determined by the sensor, wherein the object is located at the detection zone In domain, and the spatial dimension of the detection zone is manually specified；And

By the velocity adaptive of the vehicle in the speed of the object.

11. according to the method described in claim 10, further include the spatial dimension of the detection zone is assigned to it is described The right side or left side of the direction of travel of vehicle.

12. according to the method described in claim 10, wherein, manually the spatial dimension of the specified detection zone includes Specify the spatial dimension of the detection zone manually according to the traffic perceived by the driver by driver.

13. according to the method for claim 12, wherein manually specified described in the detection zone by the driver Spatial dimension includes being arranged in the input unit on the right side of the driver by driver actuating with by the detection zone The spatial dimension is expanded to the right side of the direction of travel of the vehicle or is arranged in the driving by driver actuating The spatial dimension of the detection zone to be expanded to the direction of travel of the vehicle by the input unit in member left side Left side.

14. according to the method described in claim 10, wherein, it includes that actuating is arranged manually to specify the spatial dimension of detection zone Input unit on the steering wheel.