CN113119729A - Method and device for detecting hands-off state of steering wheel, vehicle and medium - Google Patents
Method and device for detecting hands-off state of steering wheel, vehicle and medium Download PDFInfo
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- CN113119729A CN113119729A CN202110507868.0A CN202110507868A CN113119729A CN 113119729 A CN113119729 A CN 113119729A CN 202110507868 A CN202110507868 A CN 202110507868A CN 113119729 A CN113119729 A CN 113119729A
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- 230000035945 sensitivity Effects 0.000 claims abstract description 126
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- 238000004590 computer program Methods 0.000 claims description 18
- 238000001514 detection method Methods 0.000 claims description 11
- 230000003993 interaction Effects 0.000 abstract description 6
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- 238000010586 diagram Methods 0.000 description 10
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/04—Hand wheels
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
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Abstract
The embodiment of the invention provides a method and a device for detecting the hands-off state of a steering wheel, a vehicle and a readable storage medium, wherein the method comprises the following steps: responding to an interactive instruction of a user to the vehicle-mounted terminal, and displaying a sensitivity gear control for detecting the hands-off state of a steering wheel on a display screen of the vehicle-mounted terminal; receiving touch operation of a user on the sensitivity gear control; adjusting a hand moment threshold of the steering wheel according to the touch operation; and acquiring the hands-off state of the steering wheel after the hand moment threshold value is adjusted. According to the embodiment of the invention, the human-computer interaction interface capable of setting the sensitivity is provided, and the user can touch the sensitivity gear control on the vehicle-mounted terminal according to the vehicle state and the driving experience to realize the regulation and control of the hand moment threshold, so that the sensitivity requirement of different users for detecting the hands-off state of the steering wheel can be met as much as possible, and the driving experience of the user is improved.
Description
Technical Field
The present invention relates to the field of vehicle technologies, and in particular, to a method for detecting a hands-off state of a steering wheel, an apparatus for detecting a hands-off state of a steering wheel, a vehicle, and a computer-readable storage medium.
Background
The present method for detecting the hands-off state adopted by a lane centering auxiliary system in an intelligent vehicle is to detect a driver's hand Torque (Torque Bar Torque, hereinafter referred to as TBT) acting on a Steering wheel by a driver using a Torque sensor of an EPS (Electric Power Steering), then compare the driver's hand Torque with a set hand Torque threshold, and determine the hands-off state of the driver according to the comparison result. However, because the operation of the vehicle motor interferes with the sensor and the zero point of the sensor is offset, the difference of the TBT signals between different vehicles is large, and if a fixed hand torque threshold value is set for any vehicle to perform the above determination process, the difference of the driving experience of different users is large.
Disclosure of Invention
In view of the above problems, embodiments of the present invention are proposed to provide a hands-off state detection method of a steering wheel and a corresponding hands-off state detection apparatus of a steering wheel, a vehicle, and a computer-readable storage medium that overcome or at least partially solve the above problems.
The embodiment of the invention discloses a method for detecting the hands-off state of a steering wheel, which is applied to a vehicle-mounted terminal and comprises the following steps:
responding to an interactive instruction of a user to the vehicle-mounted terminal, and displaying a sensitivity gear control for detecting the hands-off state of a steering wheel on a display screen of the vehicle-mounted terminal;
receiving touch operation of a user on the sensitivity gear control;
adjusting a hand moment threshold of the steering wheel according to the touch operation;
after the hand moment threshold value is adjusted, acquiring the hand-off state of the steering wheel; and the hands-off state of the steering wheel is determined according to a judgment result after a vehicle control unit acquires a current hand moment value acted on the steering wheel by a user, judges whether the current hand moment value is larger than the hand moment threshold value or not.
Optionally, the sensitivity gear control includes a plurality of sub-controls, the plurality of sub-controls respectively correspond to preset sensitivities, the preset sensitivities correspond to preset hand moment thresholds, and adjusting the hand moment threshold of the steering wheel according to the touch operation includes:
determining a target sub-control corresponding to the touch operation;
and determining target sensitivity corresponding to the target sub-control, and setting a hand moment threshold of the steering wheel as a target hand moment threshold corresponding to the target sensitivity.
Optionally, if the current hand moment value is greater than the hand moment threshold value, determining that the steering wheel is in an unthreading state; and if the current hand moment value is not greater than the hand moment threshold value, determining that the steering wheel is in a hands-off state.
Optionally, the current hand moment value is a filtered hand moment value.
Optionally, the higher the preset sensitivity, the smaller the preset hand moment threshold.
The embodiment of the invention also discloses a device for detecting the hands-off state of the steering wheel, which is applied to a vehicle-mounted terminal and comprises:
the display module is used for responding to an interactive instruction of a user to the vehicle-mounted terminal and displaying a sensitivity gear control for detecting the hands-off state of the steering wheel on a display screen of the vehicle-mounted terminal;
the receiving module is used for receiving touch operation acted on the sensitivity gear control by a user;
the adjusting module is used for adjusting the hand moment threshold of the steering wheel according to the touch operation;
the acquisition module is used for acquiring the hands-off state of the steering wheel after the hand moment threshold value is adjusted; and the hands-off state of the steering wheel is determined according to a judgment result after a vehicle control unit acquires a current hand moment value acted on the steering wheel by a user, judges whether the current hand moment value is larger than the hand moment threshold value or not.
Optionally, the sensitivity gear control includes a plurality of sub-controls, the plurality of sub-controls respectively correspond to preset sensitivities, the preset sensitivities correspond to preset hand moment thresholds, and the adjusting module includes:
the first determining sub-module is used for determining a target sub-control corresponding to the touch operation;
and the second determining submodule is used for determining the target sensitivity corresponding to the target sub-control and setting the hand moment threshold of the steering wheel as the target hand moment threshold corresponding to the target sensitivity.
Optionally, if the current hand moment value is greater than the hand moment threshold value, determining that the steering wheel is in an unthreading state; and if the current hand moment value is not greater than the hand moment threshold value, determining that the steering wheel is in a hands-off state.
Optionally, the current hand moment value is a filtered hand moment value.
Optionally, the higher the preset sensitivity, the smaller the preset hand moment threshold.
The embodiment of the invention also discloses a vehicle, which comprises: a processor, a memory and a computer program stored on the memory and capable of running on the processor, the computer program, when executed by the processor, implementing the steps of a method of detecting a hands-off state of a steering wheel as described above.
The embodiment of the invention also discloses a computer readable storage medium, wherein a computer program is stored on the computer readable storage medium, and when the computer program is executed by a processor, the steps of the method for detecting the hands-off state of the steering wheel are realized.
The embodiment of the invention has the following advantages:
in the embodiment of the invention, a user can adjust the hand moment threshold of the steering wheel by touching the sensitivity gear control on the vehicle-mounted terminal. By adopting the method, the human-computer interaction interface with the set sensitivity is provided, and the user can touch the sensitivity gear control on the vehicle-mounted terminal according to the vehicle state and the driving experience to realize the regulation and control of the hand moment threshold, so that the sensitivity requirement of different users on the detection of the hands-off state of the steering wheel can be met as much as possible, and the driving experience of the user is improved.
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Fig. 1 is a flowchart illustrating steps of a method for detecting a hands-off state of a steering wheel according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating steps of another method for detecting a hands-off state of a steering wheel according to an embodiment of the present invention;
fig. 3 is a flowchart of a method for detecting a hands-off state of a steering wheel according to an embodiment of the present invention;
fig. 4 is a block diagram of a hands-off state detection device for a steering wheel according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of them. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
Currently, a method for detecting the hands-off state of a steering wheel of a vehicle is to detect a driver hand moment applied to the steering wheel by a driver, compare the driver hand moment with a set hand moment threshold, and determine the hands-off state of the driver according to the comparison result. However, the difference in the detected signal of the hand torque of the driver between different vehicles is large due to the vehicle's own sudden strain of a muscle and the zero offset of the sensor, different hands-off detection experiences can be generated for different users by the same hand torque threshold, and the expectation of the hand-off detection for each user is also different, which makes it difficult to set a fixed hand torque threshold to determine the hands-off state of the driver during the development process, and even in the case of a small vehicle sudden strain of a muscle, different driving habits and different expectations of different users can also lead to different driving experiences.
One of the core ideas of the embodiment of the invention is that a user can adjust the hand moment threshold of the steering wheel through a sensitivity gear control on the touch vehicle-mounted terminal. By adopting the method, the human-computer interaction interface with the set sensitivity is provided, and the user can touch the sensitivity gear control on the vehicle-mounted terminal according to the vehicle state and the driving experience to realize the regulation and control of the hand moment threshold, so that the sensitivity requirement of different users on the detection of the hands-off state of the steering wheel can be met as much as possible, and the driving experience of the user is improved.
Referring to fig. 1, a flowchart illustrating steps of a method for detecting a hands-off state of a steering wheel according to an embodiment of the present invention is shown, and the method is applied to a vehicle-mounted terminal, and may specifically include the following steps:
In the embodiment of the invention, the vehicle-mounted terminal can be a vehicle-mounted central control, and when a user needs to display the sensitivity gear control on a display screen of the vehicle-mounted terminal, a corresponding interactive instruction can be sent to the vehicle-mounted terminal. The interactive instruction may be a voice instruction of the user, or may also be a touch instruction acted on the vehicle-mounted terminal by the user. The sensitivity gear control is used for setting the sensitivity of detecting the hands-off state of the steering wheel. In one example, a plurality of sensitivity level controls are displayed on the vehicle-mounted terminal, icons can be set for the sensitivity level controls in a user-defined mode, after a user selects an icon corresponding to one of the sensitivity level controls, the icon can be lightened to prompt the user that a level corresponding to the icon is selected, and other unselected icons are not lightened. In addition, the sensitivity description words corresponding to the selected gear can be displayed in a preset setting column, so that the user can know the specific use of the setting.
In a preferred embodiment, the use description of the sensitivity level can also be displayed in a preset position of the vehicle-mounted terminal.
And 102, receiving a touch operation acted on the sensitivity gear control by a user.
In the embodiment of the invention, after the vehicle-mounted terminal displays the sensitivity gear control for detecting the hands-off state of the steering wheel, a user can perform corresponding touch operation on the sensitivity gear control according to the sensitivity requirement for actually detecting the hands-off state of the steering wheel. The sensitivity level control can have a plurality of control styles, such as a button control, a combo box control, a slider control, and the like. The touch operation acting on the sensitivity level control is different according to different styles of the sensitivity level control, and the touch operation may be a click operation or a slide operation, which is not specifically limited in the embodiments of the present invention.
And 103, adjusting a hand moment threshold of the steering wheel according to the touch operation.
In the embodiment of the invention, the sensitivity level control can be provided with a plurality of sensitivities, and the sensitivity of the selection corresponding to the touch operation acting on the sensitivity level control can be determined. The hands-off state of the steering wheel is determined by comparing the acquired current hand moment value with a preset hand moment threshold value, so that the higher the sensitivity is, the smaller the hand moment threshold value of the steering wheel can be set, and the easier the driver can detect that the hands are placed on the steering wheel; conversely, the lower the sensitivity, the greater the hand moment threshold of the steering wheel may be set, so that it is less likely that the driver's hand is on the steering wheel. In the embodiment of the invention, the sensitivity and the hand moment threshold have a corresponding relation, and the hand moment threshold of the steering wheel can be adjusted according to the sensitivity selected by touch operation.
And 104, acquiring the hands-off state of the steering wheel after the hand moment threshold value is adjusted.
The vehicle control unit acquires a current hand moment value acted on the steering wheel by a user, judges whether the current hand moment value is larger than a hand moment threshold value or not, and determines according to a judgment result.
In the embodiment of the invention, after the hand moment threshold value is adjusted according to the touch operation, the hand moment threshold value can be sent to the vehicle control unit, and after the vehicle control unit obtains the current hand moment value of the steering wheel acted by the user and detected by the torque sensor, the adjusted hand moment threshold value is compared with the current hand moment value, so that whether the current hand moment value is larger than the hand moment threshold value or not is judged, and the hands-off state of the current steering wheel is determined according to the judgment result. The in-vehicle terminal may acquire the hands-off state from the vehicle control unit.
In summary, in the embodiments of the present invention, a human-computer interaction interface capable of setting sensitivity is provided, and a user can adjust a hand moment threshold of a steering wheel by touching a sensitivity gear control on a vehicle-mounted terminal. By adopting the method, the user can touch the sensitivity gear control on the vehicle-mounted terminal according to the vehicle state and the driving experience, and the hand torque threshold value is regulated and controlled, so that the sensitivity requirement of different users on the detection of the hands-off state of the steering wheel can be met as far as possible, and the driving experience of the user is improved.
Referring to fig. 2, a flowchart illustrating steps of another method for detecting a hands-off state of a steering wheel according to an embodiment of the present invention is shown, and the method is applied to a vehicle-mounted terminal, and may specifically include the following steps:
In the embodiment of the invention, the vehicle-mounted terminal can be a vehicle-mounted central control, and when a user needs to display the sensitivity gear control on a display screen of the vehicle-mounted terminal, a corresponding interactive instruction can be sent to the vehicle-mounted terminal. The interactive instruction can be a voice instruction of the user, and can also be a touch instruction acted on the vehicle-mounted terminal by the user. The sensitivity gear control is used for setting the sensitivity of detecting the hands-off state of the steering wheel.
And 202, receiving touch operation acted on the sensitivity gear control by a user.
In the embodiment of the invention, the touch operation of a user on the sensitivity level control is received. The sensitivity gear control may have a variety of control styles, such as button controls, combo box controls, slider controls, and the like. The touch operation acting on the sensitivity level control is different according to different styles of the sensitivity level control, and the touch operation may be a click operation or a slide operation, which is not specifically limited in the embodiments of the present invention.
In one example, the sensitivity level control may include a plurality of sub-controls, each of the plurality of sub-controls corresponds to a preset sensitivity, and the preset sensitivity corresponds to a preset hand moment threshold. For example, the vehicle-mounted terminal may be provided with five sensitivity gear sub-controls for the user to select, which are five gears, namely, high sensitivity (D1), high sensitivity (D2), standard sensitivity (D3), low sensitivity (D4), and low sensitivity (D5). After one of the gears is selected, the icon on the corresponding gear is lightened to prompt that the icon is selected, and the icons on other unselected gears are kept in a non-lightened state.
In the embodiment of the invention, the corresponding relation between the sensitivity and the hand moment threshold value can be established in advance, and after the sensitivity selected by the user is determined, the hand moment threshold value corresponding to the sensitivity selected by the user can be searched according to the corresponding relation. The setting of the hand moment threshold value can be calibrated after analyzing the whole fluctuation range of the TBT through a large number of real vehicle tests. In one example, a plurality of test vehicles can be tested in a hands-off state and a hands-on state (wherein the hands-on state can be divided into different steering wheel postures and different acting forces), lanes with different vehicle speeds and different curvature radiuses are tested, a large amount of test data is collected, and a hand moment threshold value can be calibrated according to data analysis results and subjective feelings of drivers.
In the embodiment of the invention, the target child control touched by the user can be determined.
And 204, determining the target sensitivity corresponding to the target sub-control, and setting the hand moment threshold of the steering wheel as a target hand moment threshold corresponding to the target sensitivity.
And determining target sensitivity corresponding to the target sub-control from a plurality of preset sensitivities, determining a target hand moment threshold corresponding to the target sensitivity, and setting the hand moment threshold of the current steering wheel as the target hand moment threshold.
In one example, the higher the preset sensitivity, the smaller the preset hand moment threshold may be set.
The higher the sensitivity is, the smaller the hand moment threshold of the steering wheel can be set, so that the more easily it is detected that the driver's hand is placed on the steering wheel; conversely, the lower the sensitivity, the greater the hand moment threshold of the steering wheel may be set, so that it is less likely that the driver's hand is on the steering wheel.
And step 205, acquiring the hands-off state of the steering wheel after the hand moment threshold value is adjusted.
The vehicle control unit acquires a current hand moment value acted on the steering wheel by a user, judges whether the current hand moment value is larger than a hand moment threshold value or not, and determines according to a judgment result. The specific judgment process may be: if the current hand moment value is larger than the hand moment threshold value, determining that the steering wheel is in a hands-off state; and if the current hand moment value is not greater than the hand moment threshold value, determining that the steering wheel is in the hands-off state.
In the embodiment of the present invention, after adjusting the hand moment threshold of the steering wheel, the vehicle control unit may compare the adjusted hand moment threshold with the obtained current hand moment value to determine the current hands-off state of the steering wheel.
In a preferred embodiment, the current hand moment value is a filtered hand moment value.
Before the comparison, the obtained current hand moment value may be subjected to filtering processing, and the hand moment value after the filtering processing is adopted to perform the above determination process. The hand moment signal of the driver detected by the torque sensor of the EPS is likely to fluctuate greatly (the high-frequency clutter signals are more), so that the hand moment signal can be subjected to low-pass filtering to obtain a filtered hand moment value, and the interference of the clutter signals on threshold judgment is reduced.
In order to enable those skilled in the art to better understand steps 201 to 205 of the embodiment of the present invention, the following description is made by way of an example:
fig. 3 is a flowchart illustrating a method for detecting a hands-off state of a steering wheel according to an embodiment of the present invention. The specific process is as follows:
1. five sensitivity gear sub-controls D1-D5 are displayed on a display screen of the vehicle-mounted terminal, and a user can select the required sensitivity from the five sensitivity gear sub-controls and correspondingly touch the corresponding sensitivity gear sub-controls.
2. The sensitivity gear sub-control corresponds to a preset sensitivity, the preset sensitivity corresponds to a preset hand moment threshold, namely the sensitivity gear sub-controls D1-D5 correspond to preset hand moment thresholds T1-T5, and the hand moment threshold corresponding to the sensitivity sub-control selected by the user can be determined and is assumed to be T (T is one of T1-T5).
3. The EPS carries out filtering processing on the current hand moment TBT acted on the steering wheel by the user after detecting the current hand moment TBT, the TBT after filtering processing is compared with the T, and when the TBT after filtering processing is larger than the T, the situation that the hand of the driver is placed on the steering wheel, namely the driver is in a hands-off state, can be determined; when the TBT after the filtering process is not greater than T, it may be determined that the driver's hand is not on the steering wheel, i.e., is in the hands-off state.
In summary, in the embodiments of the present invention, a human-computer interaction interface capable of setting sensitivity is provided, and a user can adjust a hand moment threshold of a steering wheel by touching a sensitivity gear control on a vehicle-mounted terminal. By adopting the method, the user can touch the sensitivity gear control on the vehicle-mounted terminal according to the vehicle state and the driving experience, and the hand torque threshold value is regulated and controlled, so that the sensitivity requirement of different users on the detection of the hands-off state of the steering wheel can be met as far as possible, and the driving experience of the user is improved.
It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the illustrated order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments of the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.
Referring to fig. 4, a block diagram of a structure of a device for detecting a hands-off state of a steering wheel according to an embodiment of the present invention is shown, and is applied to a vehicle-mounted terminal, and specifically includes the following modules:
the display module 401 is configured to display, on a display screen of the vehicle-mounted terminal, a sensitivity gear control for detecting a hands-off state of a steering wheel in response to an interactive instruction of a user to the vehicle-mounted terminal;
a receiving module 402, configured to receive a touch operation performed by a user on the sensitivity level control;
an adjusting module 403, configured to adjust a hand moment threshold of the steering wheel according to the touch operation;
an obtaining module 404, configured to obtain a hands-off state of the steering wheel after the hand moment threshold is adjusted; and the hands-off state of the steering wheel is determined according to a judgment result after a vehicle control unit acquires a current hand moment value acted on the steering wheel by a user, judges whether the current hand moment value is larger than the hand moment threshold value or not.
In an embodiment of the present invention, the sensitivity level control includes a plurality of sub-controls, the plurality of sub-controls respectively correspond to preset sensitivities, and the preset sensitivities correspond to preset hand moment thresholds, and the adjusting module includes:
the first determining sub-module is used for determining a target sub-control corresponding to the touch operation;
and the second determining submodule is used for determining the target sensitivity corresponding to the target sub-control and setting the hand moment threshold of the steering wheel as the target hand moment threshold corresponding to the target sensitivity.
In the embodiment of the present invention, if the current hand moment value is greater than the hand moment threshold value, it is determined that the steering wheel is in a hands-off state; and if the current hand moment value is not greater than the hand moment threshold value, determining that the steering wheel is in a hands-off state.
In the embodiment of the present invention, the current hand moment value is a filtered hand moment value.
In the embodiment of the present invention, the higher the preset sensitivity is, the smaller the preset hand moment threshold is.
In summary, in the embodiment of the present invention, the user may adjust the hand moment threshold of the steering wheel by touching the sensitivity gear control on the vehicle-mounted terminal. By adopting the method, the human-computer interaction interface with the set sensitivity is provided, and the user can touch the sensitivity gear control on the vehicle-mounted terminal according to the vehicle state and the driving experience to realize the regulation and control of the hand moment threshold, so that the sensitivity requirement of different users on the detection of the hands-off state of the steering wheel can be met as much as possible, and the driving experience of the user is improved.
For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
An embodiment of the present invention further provides a vehicle, including: the processor, the memory and the computer program stored in the memory and capable of running on the processor, when executed by the processor, implement the processes of the above-mentioned embodiment of the method for detecting the hands-off state of the steering wheel, and can achieve the same technical effects, and are not described herein again to avoid repetition.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the above-mentioned method for detecting a hands-off state of a steering wheel, and can achieve the same technical effect, and in order to avoid repetition, the detailed description is omitted here.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The present invention provides a method and a device for detecting the hands-off state of a steering wheel, a vehicle and a computer readable storage medium, which are described in detail above, wherein specific examples are applied to illustrate the principle and the embodiment of the present invention, and the description of the above embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A method for detecting the hands-off state of a steering wheel is applied to a vehicle-mounted terminal, and comprises the following steps:
responding to an interactive instruction of a user to the vehicle-mounted terminal, and displaying a sensitivity gear control for detecting the hands-off state of a steering wheel on a display screen of the vehicle-mounted terminal;
receiving touch operation of a user on the sensitivity gear control;
adjusting a hand moment threshold of the steering wheel according to the touch operation;
after the hand moment threshold value is adjusted, acquiring the hand-off state of the steering wheel; and the hands-off state of the steering wheel is determined according to a judgment result after a vehicle control unit acquires a current hand moment value acted on the steering wheel by a user, judges whether the current hand moment value is larger than the hand moment threshold value or not.
2. The method according to claim 1, wherein the sensitivity level control comprises a plurality of sub-controls, the plurality of sub-controls respectively correspond to preset sensitivities, the preset sensitivities correspond to preset hand moment thresholds, and the adjusting the hand moment thresholds of the steering wheel according to the touch operation comprises:
determining a target sub-control corresponding to the touch operation;
and determining target sensitivity corresponding to the target sub-control, and setting a hand moment threshold of the steering wheel as a target hand moment threshold corresponding to the target sensitivity.
3. The method of claim 1, wherein if the current hand moment value is greater than the hand moment threshold value, determining that the steering wheel is in an hands-off state; and if the current hand moment value is not greater than the hand moment threshold value, determining that the steering wheel is in a hands-off state.
4. A method according to claim 3, characterized in that the current hand moment value is a filtered hand moment value.
5. The method of claim 2, wherein the higher the preset sensitivity, the smaller the preset hand moment threshold.
6. A hands-off state detection device of a steering wheel, which is applied to a vehicle-mounted terminal, the device comprising:
the display module is used for responding to an interactive instruction of a user to the vehicle-mounted terminal and displaying a sensitivity gear control for detecting the hands-off state of the steering wheel on a display screen of the vehicle-mounted terminal;
the receiving module is used for receiving touch operation acted on the sensitivity gear control by a user;
the adjusting module is used for adjusting the hand moment threshold of the steering wheel according to the touch operation;
the acquisition module is used for acquiring the hands-off state of the steering wheel after the hand moment threshold value is adjusted; and the hands-off state of the steering wheel is determined according to a judgment result after a vehicle control unit acquires a current hand moment value acted on the steering wheel by a user, judges whether the current hand moment value is larger than the hand moment threshold value or not.
7. The apparatus of claim 6, wherein the sensitivity range control comprises a plurality of sub-controls, the plurality of sub-controls respectively corresponding to preset sensitivities, the preset sensitivities corresponding to preset hand moment thresholds, and the adjusting module comprises:
the first determining sub-module is used for determining a target sub-control corresponding to the touch operation;
and the second determining submodule is used for determining the target sensitivity corresponding to the target sub-control and setting the hand moment threshold of the steering wheel as the target hand moment threshold corresponding to the target sensitivity.
8. The apparatus of claim 6, wherein the steering wheel is determined to be in an hands-off state if the current hand moment value is greater than the hand moment threshold value; and if the current hand moment value is not greater than the hand moment threshold value, determining that the steering wheel is in a hands-off state.
9. A vehicle, characterized by comprising: processor, memory and computer program stored on the memory and capable of running on the processor, which computer program, when executed by the processor, carries out the steps of a method of detecting a hands-off state of a steering wheel according to any of claims 1-5.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of a method of detecting a hands-off state of a steering wheel according to any one of claims 1 to 5.
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