Patent Application
20230192110
None.
The present disclosure relates to methods, apparatuses, and systems for a vehicle and, more particularly, to selecting a drive mode for a vehicle based on receiving user input on sensors disposed on a steering wheel of the vehicle.
A transportation vehicle is a highly sophisticated machine with an advanced driving assistance system (ADAS) for perception, navigation, traction control, lane assist, lane centering, lane changing, adaptive cruise control, emergency braking, and/or autonomous driving, a four-wheel drive system, and/or other systems to improve safety and/or comfort. Such vehicles can also have preset drive modes for configuring vehicle components, including ADAS functionality, engine, transmission, suspension system, steering system, and braking system. The drive modes allow for adjustment of the overall handling, dynamics, functionality, and efficiency of the vehicle. Typically, modes can be set depending on a current usage or desired usage of the vehicle.
In an example, the display 4 can list out the following drive modes, including a normal mode 20, a sport mode 22, an eco mode 24, a comfort mode 26, and a custom mode 28. Each drive mode has a preset configuration for the vehicle components to customize handling, dynamics, functionality, and efficiency of the vehicle. The eco mode 24 may configure the automotive components to maximize fuel efficiency by shutting down various engine cylinders or motors, reducing throttle responsiveness, increasing utilization of batteries in gas-electric hybrid systems, etc. The sport mode 22 may configure the automotive components for maximum handling and acceleration by increasing throttle responsiveness, stiffening the suspension, lowering the vehicle, activating all engine cylinders or motors, etc.
The drive mode may also include activating or deactivating various levels of automation of a vehicle. The spectrum of drive modes can range from manual driving (i.e., where all ADAS functionality is deactivated), to various assisted states, and up to a fully automated driving state (e.g., SAE level 5 autonomy state) if equipped.
Changing between the many drive modes is a major challenge for the driver. In particular, for automated drive modes, there can be no room for error between zero ADAS functionality and some functionality, e.g., SAE level 2 functions. Such drive modes must be clearly communicated to the driver, so that the driver can adjust his/her level of attention to operate the vehicle.
In addition, there needs to be a more user-experience friendly manner to change drive modes other than by going through a complicated process to manually scroll through a knob or touch-sensitive display HMI. For instance, if a driver wants to unlock a more aggressive acceleration drive mode for entering a highway or overtaking traffic, then there needs an efficient and use friendly manner for the user to quickly switch from a normal drive mode to a sport mode.
The present disclosure is illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which like reference numerals refer to similar elements and in which:
The figures and descriptions provided herein may have been simplified to illustrate aspects that are relevant for a clear understanding of the herein described devices, systems, and methods, while eliminating, for the purpose of clarity, other aspects that may be found in typical devices, systems, and methods. Those of ordinary skill in the art may recognize that other elements and/or operations may be desirable and/or necessary to implement the devices, systems, and methods described herein. Because such elements and operations are well known in the art, and because they do not facilitate a better understanding of the present disclosure, a discussion of such elements and operations may not be provided herein. However, the present disclosure is deemed to inherently include all such elements, variations, and modifications to the described aspects that would be known to those of ordinary skill in the art.
When pressure is applied at the gripping areas 42 that exceed a threshold pressure value, a preset drive mode is engaged for the vehicle. The threshold pressure value can be predefined by setting a default pressure value. The threshold pressure value can also be user selected from a menu on an HMI of the vehicle and/or by physical driver calibration (e.g., by having the driver squeeze the sensors at the gripping areas 42 to a particular sensed pressure value). Furthermore, the preset drive mode can be predefined as a default and can be changed by a user of the vehicle.
Once the gripping areas 42 are triggered, the preset drive mode can be engaged on the vehicle for a predefined period of time. Alternatively, in an embodiment, the preset drive mode can be applied while the pressure sensors of the steering wheel are actively engaged by the driver. When the pressure sensors are no longer engaged, then the drive mode of the vehicle can revert back to the previous drive mode the vehicle was in or be otherwise disengaged. It can be further appreciated that other triggering events can be used to disengage the preset drive mode.
In an example embodiment, the gripping areas 42 can be located symmetrically about the steering wheel 40 at locations a driver would typically place their hands for operating the vehicle. As a safeguard, the driver may need to simultaneously squeeze the gripping areas 42 at two locations to ensure that both of the driver’s hands are being used to control the vehicle in the preset drive mode.
It can be appreciated that the gripping areas 42 can be located at other areas of the steering wheel 40 and may not be symmetrically placed about the wheel. Furthermore, it can be understood that the number of gripping areas that need to squeezed can be set to one gripping area should the driver desire to only use one gripping area to engage the preset drive mode.
The pressure sensors at the gripping areas 42 can be implemented using pressure sensor technologies (e.g., piezoresistive sensors, resistive sensors, capacitive sensors, tactile pressure sensor, load cells, strain gauges, microelectromechanical systems, force-sensitive resistors, etc.) and can be triggered when a preset or otherwise defined pressure value threshold is reached or exceeded. Ideally, the pressure value threshold should be set to a level to avoid false positives when the driver is not intentionally trying to trigger the gripping areas 42. Furthermore, the steering wheel 40 may have a smooth exterior for the driver to easily glide his/her hands to various positions along the steering wheel 40. The pressure sensors at the gripping areas 42 can be leveled with the steering wheel 40 exterior so that the driver can move his/her hands around the steering wheel 40.
In another embodiment of the present disclosure, the pressure sensors may be located right underneath and touching the steering wheel 40 exterior. In another embodiment, the pressure sensors can be recessed (or protruding) from the steering wheel 40 exterior so that the driver can quickly feel the location of the gripping areas 42.
In yet another embodiment of the present disclosure, the steering wheel 40 can have an illuminated outline of the gripping areas 42 to provide a visual target for the driver to locate such gripping areas 42. The illuminated outline can be implemented by having lighting elements (light emitting diodes, “LEDs”) disposed along the outer edge of the gripping areas 42 on the steering wheel 40.
In an embodiment of the present disclosure, LEDs can be flush with the steering wheel and outline the gripping areas. The LEDs may emit a plurality of colors to further assist in conveying information to the driver. The LEDs may omit white, red or green colored light. When the gripping areas 42 are not being gripped by the drive, a white outline of the gripping can be shown by the LEDs. When one or more of the gripping areas 42 are held, the color of the LEDs corresponding to an outline of those one or more gripping areas 42 can change its displayed color to red. When the one or more gripping areas 42 are triggered by the requisite pressure, the red displayed color turn to green to alert the driver of the activation of the preset drive mode. It can be appreciated that other colors and other permutations can be contemplated based on the present disclosure. The above configuration is an illustrative example to aid in the understanding of the present disclosure and is not meant to limit the disclosure in any way.
In an embodiment of the present disclosure, a current drive mode of a vehicle is set to a normal mode. Upon triggering of the steering wheel pressure sensors (i.e., squeezing one or more of the gripping areas 42), the drive mode of the vehicle is switched to a sport mode which is activated. The sport mode can be the preset drive mode for the vehicle. The sport mode is activated as long as the steering wheel sensors stay engaged by the driver (i.e., the driver maintains squeezing the gripping areas 42 to keep the sport mode activated).
In sport mode, the vehicle may increase throttle responsiveness, increase the steering responsiveness, adjust the suspension system by stiffening the suspension and lowering the vehicle relative, and configure other components of the vehicle for better driving performance relative to normal mode. When the driver releases the pressure on the gripping areas 42 (i.e., the sensed pressure value on the pressure sensors falls below the pressure value threshold), the drive mode is deactivated and the vehicle activates the normal mode.
In another embodiment of the present disclosure, a normal drive mode of a vehicle can be set to a SAE Level 2 automation having lane assist and adaptive cruise control functionality. Upon triggering of the steering wheel pressure sensors, the drive mode of the vehicle is switched to a manual drive mode where all ADAS functionality is deactivated (i.e., SAE Level 0). The manual drive mode can be engaged while the steering wheel sensors are engaged. When the driver releases the pressure on the gripping areas of the steering wheel, the drive mode is switched back to the normal drive mode having SAE Level 2 functionality.
In yet another embodiment of the present disclosure, an ADAS normal mode can be engaged for a vehicle, where an adaptive cruise control (ACC) system is activated. When a driver activates a sport mode by squeezing the steering wheel at the gripping areas, the vehicle can enter into a sport mode in which the vehicle performance is maximized and the ACC system is temporarily deactivated while the driver is squeezing the steering wheel at the gripping areas.
It can be appreciated that pressure sensors at the gripping areas for determining whether a driver is squeezing the gripping areas are illustrative examples of a type of sensor to determine whether the driver is triggering the activating of the preset drive mode. For instance in an embodiment the gripping areas 42 may have other types of sensors located on the steering wheel to determine whether the driver is squeezing the gripping areas 42. For instance, said sensors may be capacitive proximity sensors capable of determining amount of surface area is being touched by a user on the sensors. If the sensed area is greater in value than a predefined area value, then the sensors can be triggered for activation of the preset drive mode.
In another embodiment, the sensors at the gripping areas 42 can work in conjunction with in-cabin camera/image sensor(s) to determine an attention value for the driver. For instance, the camera/image sensor(s) can track the head movement, facial expression, and/or gaze of the driver to calculate an attention value representing the level of attention the driver is providing for operating the vehicle. If the attention value of the driver does not meet a predefined value for properly operating the vehicle, the vehicle is configured to deactivate the preset drive mode of the vehicle from being activated by squeezing the gripping areas 42. When attention value of the driver meets the predefined value for properly operating the vehicle, then the vehicle can be configured to allow for activation of the preset drive mode of the vehicle via the triggering of the gripping areas 42 as disclosed herein.
The compressible elements 56 can be implemented by foam, spring loaded latch, compressed-air-actuated elements, compression limiters, compression spring, compression mechanism, rubber, gel, etc. The steering wheel 40 can be compressed when pressure is applied on the pressure sensors 54 and elements 56. The core 52 can be a plastic, metal, and/or composite material, where the core is secured to the steering column of the vehicle. Upon applying pressure to the pressure sensors 54 (i.e., squeezing the gripping areas 50 by the driver), the elements 56 become compressed under said pressure. The elements 56 can include a locking mechanism (latch, spring, air actuated element, etc.) to keep the elements 56 in a compressed orientation. When the preset drive mode is disengaged, the controller can signal to the elements 56 to return to their original orientation to restore the steering wheel 40 to its original shape.
In an embodiment when the preset drive mode is engaged, cabin interior lighting can be used as a visual cue to the driver and/or passengers in the vehicle to represent a drive mode change and/or the current drive mode being used. For instance, when a driver activates the sport mode by squeezing the steering wheel gripping areas, the steering wheel and/or cabin light may change colors to provide a visual cue to the driver or passenger of the mode change and may maintain a second color for as long as the sport mode is activated.
In another embodiment of the present disclosure, if the vehicle is in an autonomous drive mode, the steering wheel can be illuminated in green with green cabin lighting to notify the passengers and drivers that the vehicle is in control (partly or fully) of the vehicle. When the driver switches the mode from autonomous mode to a sport mode in which the driver is in manual control of the vehicle, the steering wheel color and the cabin color can turn to a different color, e.g., green, red or yellow, of such operation of the vehicle.
Additionally, a visual indicator can be provided on a dashboard, head up display (HUD), etc. of the vehicle to indicate the current drive mode to the driver. Also, an auditory indicator can also be provided with a message or tone to indicate that the drive mode was changed.
To aid in the understanding of the present disclosure, controller 60 and drive mode selector are shown as two distinct modules. However, this is merely an example and not meant to be limiting since it can be appreciated that the drive mode selector 64 and the controller 60 can be implemented by a single computing device or split into multiple modules.
It can be further appreciated that the present disclosure can be implemented with all of the modules described herein, less than all of the modules described herein, or with additional modules known in the state of the art in conjunction with the modules described herein. The instant figures are not meant to limit the disclosure in any way and are only instructive of the many embodiment of the present disclosure.
If so, the vehicle is configured to drive in the preset drive mode 106. Once activated, the vehicle is operated using the preset drive mode 108. The preset drive mode is activated until a triggering event deactivates the preset drive mode 110. If the preset drive mode is engaged, then continue on driving in the preset drive mode. If the preset drive mode is disengaged, then return the drive mode to the previous drive mode before activation of the preset drive mode (or other drive mode, e.g., a default drive mode) 112. Once the previous drive mode is restored, then the system can monitor the pressure sensors for a next activation 100.
The approaches described herein are approaches that could be pursued, but not necessarily approaches that have been previously conceived or pursued. Therefore, unless otherwise indicated, it should not be assumed that any of the approaches described in this section qualify as prior art merely by virtue of their inclusion in this section.
The terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. As used herein, the singular forms “a”, “an” and “the” may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms “comprises,” “comprising,” “including,” and “having,” are inclusive and therefore specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The steps, processes, and operations described herein are not to be construed as necessarily requiring their respective performance in the particular order discussed or illustrated, unless specifically identified as a preferred order of performance. It is also to be understood that additional or alternative steps may be employed.
When an element or layer is referred to as being “on”, “engaged to”, “connected to” or “coupled to” another element or layer, it may be directly on, engaged, connected or coupled to the other element or layer, or intervening elements or layers may be present. In contrast, when an element is referred to as being “directly on,” “directly engaged to”, “directly connected to” or “directly coupled to” another element or layer, there may be no intervening elements or layers present. Other words used to describe the relationship between elements should be interpreted in a like fashion (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items.
As used herein, the terms “first,” “second,” “certain,” and “particular” are used as naming conventions to distinguish queries, plans, representations, steps, objects, devices, or other items from each other, so that these items may be referenced after they have been introduced. Unless otherwise specified herein, the use of these terms does not imply an ordering, timing, or any other characteristic of the referenced items.
In the drawings, the various components are depicted as being communicatively coupled to various other components by arrows. These arrows illustrate only certain examples of information flows between the components. Neither the direction of the arrows nor the lack of arrow lines between certain components should be interpreted as indicating the existence or absence of communication between the certain components themselves. Indeed, each component may feature a suitable communication interface by which the component may become communicatively coupled to other components as needed to accomplish any of the functions described herein.
In the foregoing specification, embodiments of the disclosure have been described with reference to numerous specific details that may vary from implementation to implementation. Thus, the sole and exclusive indicator of what is the disclosure, and is intended by the applicants to be the disclosure, is the set of claims that issue from this application, in the specific form in which such claims issue, including any subsequent correction. In this regard, although specific claim dependencies are set out in the claims of this application, it is to be noted that the features of the dependent claims of this application may be combined as appropriate with the features of other dependent claims and with the features of the independent claims of this application, and not merely according to the specific dependencies recited in the set of claims. Moreover, although separate embodiments are discussed herein, any combination of embodiments and/or partial embodiments discussed herein may be combined to form further embodiments.
Any definitions expressly set forth herein for terms contained in such claims shall govern the meaning of such terms as used in the claims. Hence, no limitation, element, property, feature, advantage or attribute that is not expressly recited in a claim should limit the scope of such claim in any way. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.
