CN114103845B - Vehicle central control screen operator identity recognition method and device and vehicle - Google Patents
Vehicle central control screen operator identity recognition method and device and vehicle Download PDFInfo
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Abstract
The invention discloses a method and a device for identifying the identity of a control screen operator in a vehicle and the vehicle, wherein the method comprises the following steps: responding to a current touch event acted on the central control screen by a central control screen operator, and acquiring current touch information; according to the current touch information, inquiring a preset relation between the touch information and a probability function to obtain a current probability function corresponding to the current touch information; calculating to obtain a first probability that the current touch event is from a main driver seat user by using the current probability function; and obtaining the identity of the central control screen operator based on the comparison result of the preset probability threshold and the first probability. By adopting the embodiment of the invention, the identity of the central control screen operator can be identified, the misjudgment condition is reduced, and the reliability is higher.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a method, a device, equipment and a system for identifying the identity of an operator in a control screen of a vehicle.
Background
The central control screen operator comprises users with two different identities, namely a driver and a passenger, identifies the identity of the central control screen operator in the driving process of the vehicle, and can provide more personalized intelligent recommendation service or safety reminding for the identity of the central control screen operator. For example, when the driver is recognized to operate on the central control screen during the running of the vehicle and the operation time exceeds 5 seconds, the safe driving reminding service is provided.
At present, a vehicle matches a recognized fingerprint on a center control screen with a fingerprint library to confirm the identity of an operator of the center control screen, but when a user in the fingerprint library sits in a copilot to perform center control screen operation, the situation of misjudgment can occur, and the reliability is low.
Disclosure of Invention
The invention provides a method, a device, equipment and a system for identifying the identity of an operator on a central control screen of a vehicle, aiming at solving the problem of low reliability in the prior art.
In order to achieve the above object, an embodiment of the present invention provides a method for identifying an identity of an operator in a control screen of a vehicle, including:
responding to a current touch event acted on the central control screen by a central control screen operator, and acquiring current touch information;
according to the current touch information, inquiring a preset relation between the touch information and a probability function to obtain a current probability function corresponding to the current touch information;
calculating to obtain a first probability that the current touch event is from a main driver seat user by using the current probability function;
and obtaining the identity of the central control screen operator based on the comparison result of the preset probability threshold and the first probability.
As an improvement of the above scheme, the current touch information includes a center point coordinate of a current elliptical area, and an angle between a long axis of the current elliptical area and a positive direction of an X-axis of a central control screen coordinate system; wherein the current elliptical area is one of elliptical areas generated by a click event of the current touch event.
As an improvement of the above solution, when the total number of the elliptical areas is equal to 1, the current elliptical area is one of the elliptical areas generated by the click event of the current touch event.
When the total number of the elliptical areas is greater than 1, the current elliptical area is an elliptical area with the smallest difference between the X-axis coordinate of a long axis vertex and the X-axis coordinate of a corresponding long axis vertex in the generated elliptical area.
As an improvement of the above scheme, the obtaining, according to the current touch information, a current probability function corresponding to the current touch information by querying from a relationship between preset touch information and a probability function includes:
determining a current sub-screen area where the current touch event is located according to the central point coordinates;
and inquiring a current probability function corresponding to the current touch information from a preset relation between the touch information and the probability function according to the current sub-screen area.
As an improvement to the above solution, the calculating, by using the current probability function, a first probability that the current touch event is derived from a master driver seat user includes:
and substituting the angle between the long axis of the current elliptical area and the positive direction of the X axis of the central control screen coordinate system into the current probability function, and calculating to obtain a first probability that the current touch event is from a main driving position user.
As an improvement of the above solution, the relationship between the touch information and the probability function is constructed by the following steps:
responding to a plurality of simulated touch events acted on the central control screen by a central control screen operator, and acquiring a plurality of simulated touch information; wherein the plurality of simulated touch events comprise a plurality of simulated touch events from a user in the primary driver seat and a plurality of simulated touch events from a user in the secondary driver seat;
according to the plurality of pieces of simulated touch information, counting effective simulated touch information of the simulated touch events falling on a plurality of effective angle intervals of each effective sub-screen area; the effective sub-screen area is a sub-screen area, the number of times of the simulated touch events falling on the sub-screen area is not less than a preset first time threshold, and the effective angle interval is an angle interval, the number of times of the simulated touch events falling on the angle interval is not less than a corresponding preset second time threshold;
according to the effective simulation touch information, constructing two-dimensional discrete data of a simulation touch event from a main driver seat user;
fitting the two-dimensional discrete data to obtain a probability function which is corresponding to the simulated touch event of each effective sub-screen area and is originated from a main driver seat user;
and judging whether a probability function corresponding to the simulated touch event of each sub-screen area and derived from the main driving position user is obtained or not, if not, returning to the step of counting the effective simulated touch information of the simulated touch event falling on a plurality of effective angle intervals of each effective sub-screen area according to a plurality of simulated touch information until the probability function corresponding to the simulated touch event of each sub-screen area and derived from the main driving position user is obtained.
As an improvement of the above solution, the counting, according to a plurality of pieces of simulated touch information, effective simulated touch information of simulated touch events falling on a plurality of effective angle intervals of each effective sub-screen area includes:
counting the first times of the simulated touch events in each sub-screen area according to the plurality of simulated touch information, and eliminating the sub-screen areas with the first times smaller than a preset first time threshold value to obtain a plurality of effective sub-screen areas;
counting second times of the simulated touch events falling on the effective sub-screen areas, and eliminating angle intervals with the second times smaller than a preset second time threshold value to obtain a plurality of effective angle intervals falling on each effective sub-screen area;
and counting effective simulated touch information of the simulated touch events falling on a plurality of effective angle intervals of each effective sub-screen area.
As an improvement of the above solution, the constructing two-dimensional discrete data of a simulated touch event from a main driver seat user according to the effective simulated touch information includes:
filling effective simulation touch information of simulation touch events falling on a plurality of effective angle intervals of each effective sub-screen area into a first two-dimensional array established according to the sub-screen area and the angle intervals;
calculating to obtain a second probability that the simulated touch event is from the main driving position user according to the times that the simulated touch event is from the main driving position user in the first two-dimensional array;
and filling the second probability into a second two-dimensional array established according to the sub-screen area and the angle interval to obtain two-dimensional discrete data of the simulated touch event from the main driver seat user.
In order to achieve the above object, an embodiment of the present invention provides an apparatus for identifying an operator in a control panel of a vehicle, including:
the current touch information acquisition module is used for responding to a current touch event acted on the central control screen by a central control screen operator and acquiring current touch information;
a current probability function obtaining module, configured to obtain, according to the current touch information, a current probability function corresponding to the current touch information by querying a preset relationship between the touch information and the probability function;
the first probability acquisition module is used for calculating and obtaining a first probability that the current touch event is from a main driver seat user by using the current probability function;
and the central control screen operator identity recognition module is used for obtaining the identity of the central control screen operator based on a comparison result of a preset probability threshold and the first probability.
To achieve the above object, an embodiment of the present invention provides a vehicle including: the vehicle body and the control screen operator identity recognition device in the vehicle are as described above.
Compared with the prior art, the identity recognition method and device for the operator of the central control screen of the vehicle and the vehicle provided by the embodiment of the invention have the advantages that the current touch information is obtained by responding to the current touch event of the central control screen operator acting on the central control screen; according to the current touch information, inquiring a preset relation between the touch information and a probability function to obtain a current probability function corresponding to the current touch information; calculating to obtain a first probability that the current touch event is from a main driver seat user by using the current probability function; and obtaining the identity of the central control screen operator based on the comparison result of the preset probability threshold and the first probability so as to identify whether the central control screen operator is a driver. Therefore, the identity of the central control screen operator can be recognized without adding extra hardware equipment and wiring harnesses, the influence of seat replacement of personnel is avoided, the misjudgment situation is reduced, the reliability is high, and meanwhile, when a touch event occurs, the real-time performance is high, the response calculation is timely carried out, and the real-time performance is high.
Drawings
FIG. 1 is a flow chart of a method for identifying an identity of a control screen operator in a vehicle according to an embodiment of the present invention;
FIG. 2 is a partition diagram of a central control screen according to an embodiment of the present invention;
fig. 3 is a block diagram of a device for identifying an operator on a control panel of a vehicle according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a flowchart of a method for identifying an identity of a screen control operator in a vehicle according to an embodiment of the present invention, where the method for identifying an identity of a screen control operator in a vehicle includes:
s1, responding to the current touch event of the central control screen acted by the central control screen operator, and acquiring current touch information;
s2, according to the current touch information, inquiring a current probability function corresponding to the current touch information from a preset relation between the touch information and the probability function;
s3, calculating to obtain a first probability that the current touch event is from a main driver seat user by using the current probability function;
and S4, obtaining the identity of the central control screen operator based on the comparison result of the preset probability threshold and the first probability.
Preferably, the probability threshold is 0.95; when the first probability is larger than the probability threshold, the identity of the central control screen operator is identified to be a user, namely a driver, from the main driving position.
It can be appreciated that the current touch event acts on the screen of the center screen, and the embodiment of the invention approximates the area generated on the center screen by the click event in the current touch event to an elliptical area, thereby calculating the first probability that the current touch event is originated from the user at the main driving position, wherein the click event represents the beginning of the current touch event.
Specifically, the current touch information includes a center point coordinate of a current elliptical area, and an angle between a long axis of the current elliptical area and a positive direction of an X axis of a central control screen coordinate system; wherein the current elliptical area is one of elliptical areas generated by a click event of the current touch event.
It can be understood that the embodiment of the present invention monitors the touch event of the central control screen in real time, and when the click event is triggered, acquires the coordinates of the center point (center of circle) of the current elliptical region, and the angle between the major axis of the current elliptical region and the positive direction of the X axis of the coordinate system of the central control screen.
Specifically, when the total number of the elliptical areas is equal to 1, the current elliptical area is one of the elliptical areas generated by the click event of the current touch event.
When the total number of the elliptical areas is greater than 1, the current elliptical area is an elliptical area with the smallest difference between the X-axis coordinate of a long axis vertex and the X-axis coordinate of a corresponding long axis vertex in the generated elliptical area.
Specifically, the obtaining, according to the current touch information, a current probability function corresponding to the current touch information by querying from a relationship between preset touch information and a probability function includes:
determining a current sub-screen area where the current touch event is located according to the central point coordinates;
and inquiring a current probability function corresponding to the current touch information from a preset relation between the touch information and the probability function according to the current sub-screen area.
It can be understood that the central control screen is divided into sub-screen areas with the same size, and the current sub-screen area where the current touch event is located is determined according to the sub-screen area where the center point coordinate of the current oval area is located.
Specifically, the calculating, by using the current probability function, a first probability that the current touch event is derived from a master driver seat user includes:
and substituting the angle between the long axis of the current elliptical area and the positive direction of the X axis of the central control screen coordinate system into the current probability function, and calculating to obtain a first probability that the current touch event is from a main driving position user.
Specifically, the relationship between the touch information and the probability function is constructed by the following steps:
responding to a plurality of simulated touch events acted on the central control screen by a central control screen operator, and acquiring a plurality of simulated touch information; wherein the plurality of simulated touch events comprise a plurality of simulated touch events from a user in the primary driver seat and a plurality of simulated touch events from a user in the secondary driver seat;
according to the plurality of pieces of simulated touch information, counting effective simulated touch information of the simulated touch events falling on a plurality of effective angle intervals of each effective sub-screen area; the effective sub-screen area is a sub-screen area, the number of times of the simulated touch events falling on the sub-screen area is not less than a preset first time threshold, and the effective angle interval is an angle interval, the number of times of the simulated touch events falling on the angle interval is not less than a corresponding preset second time threshold;
according to the effective simulation touch information, constructing two-dimensional discrete data of a simulation touch event from a main driver seat user;
fitting the two-dimensional discrete data to obtain a probability function which is corresponding to the simulated touch event of each effective sub-screen area and is originated from a main driver seat user;
and judging whether a probability function corresponding to the simulated touch event of each sub-screen area and derived from the main driving position user is obtained or not, if not, returning to the step of counting the effective simulated touch information of the simulated touch event falling on a plurality of effective angle intervals of each effective sub-screen area according to a plurality of simulated touch information until the probability function corresponding to the simulated touch event of each sub-screen area and derived from the main driving position user is obtained.
Preferably, the first time threshold is half of the average number of simulated touch events of each sub-screen area of the central control screen; the second count threshold of each active sub-screen area is half of the average number of simulated touch events at each corner of the active sub-screen area.
Specifically, the counting effective simulated touch information of the simulated touch events falling on a plurality of effective angle intervals of each effective sub-screen area according to a plurality of simulated touch information includes:
counting the first times of the simulated touch events in each sub-screen area according to the plurality of simulated touch information, and eliminating the sub-screen areas with the first times smaller than a preset first time threshold value to obtain a plurality of effective sub-screen areas;
counting second times of the simulated touch events falling on the effective sub-screen areas, and eliminating angle intervals with the second times smaller than a preset second time threshold value to obtain a plurality of effective angle intervals falling on each effective sub-screen area;
and counting effective simulated touch information of the simulated touch events falling on a plurality of effective angle intervals of each effective sub-screen area.
Specifically, dividing a screen area of a central control screen into sub-screen areas with equal sizes according to a preset proportion, counting a first time of a simulated touch event falling in each sub-screen area according to a plurality of pieces of simulated touch information, and eliminating the sub-screen areas with the first time smaller than a preset first time threshold value to obtain a plurality of effective sub-screen areas;
specifically, counting second times of the simulated touch events falling on the effective sub-screen areas, dividing the touch events into angle sections with the same angle in an equal proportion of 180 degrees, and eliminating the angle sections with the second times smaller than a preset second time threshold value to obtain a plurality of effective angle sections falling on each effective sub-screen area;
specifically, the constructing of the two-dimensional discrete data of the simulated touch event from the main driver seat user according to the effective simulated touch information includes:
filling effective simulation touch information of simulation touch events falling on a plurality of effective angle intervals of each effective sub-screen area into a first two-dimensional array established according to the sub-screen area and the angle intervals;
calculating to obtain a second probability that the simulated touch event is from the main driving position user according to the times that the simulated touch event is from the main driving position user in the first two-dimensional array;
and filling the second probability into a second two-dimensional array established according to the sub-screen area and the angle interval to obtain two-dimensional discrete data of the simulated touch event from the main driver seat user.
In order to more intuitively understand the construction steps of the relationship between the touch information and the probability function provided by the embodiment of the present invention, the following steps are performed in a specific embodiment:
step 2, as shown in fig. 2, dividing the screen area of the central control screen into 12 sub-screen areas rho according to a ratio of 4:3, marking the values to be 1 to 12, marking the coordinates (0, 0) of the point A at the top of the lower left corner of the screen to construct a central control screen coordinate system, analyzing the simulated touch events KK, and counting the times of the simulated touch events falling in each sub-screen areaMi(the number of times of the simulated touch events in each sub-screen area is M respectively0，M1，...，M11）；
Taking KK/24 as an abnormal critical value for counting positive and negative sample data, and eliminating a sub-screen area smaller than the abnormal critical value to obtain an effective sub-screen area;
Number of simulated touch events M in effective sub-screen areaiThe/36 is used as an abnormal critical value of the statistical positive and negative sample data corresponding to the effective sub-screen area, and an angle interval smaller than the abnormal critical value is removed to obtain an effective angle interval of each effective sub-screen area; i.e., the number of simulated touch events M for sub-screen area 1 when sub-screen area 1 is active1The/36 is used as an abnormal critical value of the simulated touch event of the effective sub-screen area 1, and an angle interval smaller than the abnormal critical value is removed to obtain an effective angle interval of each effective sub-screen area;
step 4, establishing a two-dimensional array a [ m ] [ n ], wherein m belongs to (0,11) and n belongs to (0,17) according to the sub-screen area and the angle interval;
the statistical result Ni,jFilling the array, i.e. am][n]=Ni,jFor example, the number N of simulated touch events in sub-screen area 2 with an angular interval of 3 π/18 to 4 π/181,3Is 230, then m =1, N =3, N =230, a [1 ]][3]=230；
According to the number N of falling simulation touch events1,3The number of times k1 from the main rider and the number of times k2 from the assistant rider in (1) are calculated to a [ m ]][n]The probability from the user in the main driving position is k1/Ni,jAnd fills it into another two-dimensional array, pr [ ρ ]][θ]=k1/Ni,jFor example, if 220 of 230 events come from the main driver seat user, ρ =1 and θ =3，N=230，k1=220，pr[1][3]=0.96）；
Obtaining two-dimensional discrete data pr [ rho ] [ theta ] representing the probability that the touch event comes from the main driving position user through the calculation;
step 5, according to the two-dimensional discrete data, performing one-dimensional polynomial fitting curve of a parameter theta on each effective sub-screen rho through Matlab poly fit and lsqcurvefit functions, wherein the order is 6, and obtaining a plurality of fitting function expressions, namely probability functions f (theta) = a theta of the sub-screen area6+b*θ5+c*θ4+d*θ3+e*θ2+ f θ + g where a, b, c, d, e, f, g are coefficients of auto-fitting, e.g. the fitting function expression for sub-screen region 3:
f(3)=（-0.000000107281220171517）*θ6+0.00000357070610347228*θ5+（-0.000274114796277068）*θ4+（-0.000821308875038434）*θ3+（-0.000560366203788501）*θ2+0.100333685546276 θ +0.665592024725124, wherein the correlation coefficient R is2=0.989564464867063；
Step 6, repeating the steps 1-5 until the probability function f of each sub-screen area is calculated1(θ)，f2(θ)，f3(θ)，…，f12And (theta), namely, the relation between the touch information and the probability function is constructed.
According to the identity recognition method for the operator of the control screen in the vehicle, provided by the embodiment of the invention, the current touch information is obtained by responding to the current touch event of the operator of the control screen acting on the control screen; according to the current touch information, inquiring a preset relation between the touch information and a probability function to obtain a current probability function corresponding to the current touch information; calculating to obtain a first probability that the current touch event is from a main driver seat user by using the current probability function; and obtaining the identity of the central control screen operator based on the comparison result of the preset probability threshold and the first probability so as to identify whether the central control screen operator is a driver. Therefore, the identity of the central control screen operator can be recognized without adding extra hardware equipment and wiring harnesses, the influence of seat replacement of personnel is avoided, the misjudgment situation is reduced, the reliability is high, and meanwhile, when a touch event occurs, the real-time performance is high, the response calculation is timely carried out, and the real-time performance is high.
Referring to fig. 3, fig. 3 is a block diagram illustrating a control panel operator identification apparatus 10 in a vehicle according to an embodiment of the present invention, where the control panel operator identification apparatus 10 in the vehicle includes:
the current touch information acquisition module 11 is configured to respond to a current touch event acted on the central control screen by a central control screen operator, and acquire current touch information;
a current probability function obtaining module 12, configured to obtain, according to the current touch information, a current probability function corresponding to the current touch information by querying a preset relationship between the touch information and the probability function;
a first probability obtaining module 13, configured to calculate, by using the current probability function, a first probability that the current touch event is from a master driver seat user;
and the central control screen operator identity recognition module 14 is configured to obtain an identity of the central control screen operator based on a comparison result between a preset probability threshold and the first probability.
Preferably, the current touch information comprises a center point coordinate of a current elliptical area, and an angle between a long axis of the current elliptical area and a positive direction of an X axis of a central control screen coordinate system; wherein the current elliptical area is one of elliptical areas generated by a click event of the current touch event.
Preferably, when the total number of the elliptical areas is equal to 1, the current elliptical area is one of the elliptical areas generated by the click event of the current touch event.
When the total number of the elliptical areas is greater than 1, the current elliptical area is an elliptical area with the smallest difference between the X-axis coordinate of a long axis vertex and the X-axis coordinate of a corresponding long axis vertex in the generated elliptical area.
Preferably, the querying, according to the current touch information, from a relationship between preset touch information and a probability function to obtain a current probability function corresponding to the current touch information includes:
determining a current sub-screen area where the current touch event is located according to the central point coordinates;
and inquiring a current probability function corresponding to the current touch information from a preset relation between the touch information and the probability function according to the current sub-screen area.
Preferably, the calculating, by using the current probability function, a first probability that the current touch event is derived from a master driver seat user includes:
and substituting the angle between the long axis of the current elliptical area and the positive direction of the X axis of the central control screen coordinate system into the current probability function, and calculating to obtain a first probability that the current touch event is from a main driving position user.
Preferably, the relationship between the touch information and the probability function is constructed by:
responding to a plurality of simulated touch events acted on the central control screen by a central control screen operator, and acquiring a plurality of simulated touch information; wherein the plurality of simulated touch events comprise a plurality of simulated touch events from a user in the primary driver seat and a plurality of simulated touch events from a user in the secondary driver seat;
according to the plurality of pieces of simulated touch information, counting effective simulated touch information of the simulated touch events falling on a plurality of effective angle intervals of each effective sub-screen area; the effective sub-screen area is a sub-screen area, the number of times of the simulated touch events falling on the sub-screen area is not less than a preset first time threshold, and the effective angle interval is an angle interval, the number of times of the simulated touch events falling on the angle interval is not less than a corresponding preset second time threshold;
according to the effective simulation touch information, constructing two-dimensional discrete data of a simulation touch event from a main driver seat user;
fitting the two-dimensional discrete data to obtain a probability function which is corresponding to the simulated touch event of each effective sub-screen area and is originated from a main driver seat user;
and judging whether a probability function corresponding to the simulated touch event of each sub-screen area and derived from the main driving position user is obtained or not, if not, returning to the step of counting the effective simulated touch information of the simulated touch event falling on a plurality of effective angle intervals of each effective sub-screen area according to a plurality of simulated touch information until the probability function corresponding to the simulated touch event of each sub-screen area and derived from the main driving position user is obtained.
Preferably, the counting, according to a plurality of pieces of simulated touch information, effective simulated touch information of the simulated touch events falling on a plurality of effective angle intervals of each effective sub-screen area includes:
counting the first times of the simulated touch events in each sub-screen area according to the plurality of simulated touch information, and eliminating the sub-screen areas with the first times smaller than a preset first time threshold value to obtain a plurality of effective sub-screen areas;
counting second times of the simulated touch events falling on the effective sub-screen areas, and eliminating angle intervals with the second times smaller than a preset second time threshold value to obtain a plurality of effective angle intervals falling on each effective sub-screen area;
and counting effective simulated touch information of the simulated touch events falling on a plurality of effective angle intervals of each effective sub-screen area.
Preferably, the constructing, according to the effective simulated touch information, two-dimensional discrete data of simulated touch events derived from a main driver seat user includes:
filling effective simulation touch information of simulation touch events falling on a plurality of effective angle intervals of each effective sub-screen area into a first two-dimensional array established according to the sub-screen area and the angle intervals;
calculating to obtain a second probability that the simulated touch event is from the main driving position user according to the times that the simulated touch event is from the main driving position user in the first two-dimensional array;
and filling the second probability into a second two-dimensional array established according to the sub-screen area and the angle interval to obtain two-dimensional discrete data of the simulated touch event from the main driver seat user.
It should be noted that, in the working process of each module in the device 10 for identifying the identity of the operator in the vehicle central control screen according to the embodiment of the present invention, reference may be made to the working process of the method for identifying the identity of the operator in the vehicle central control screen according to the above embodiment, and details are not repeated herein.
According to the identity recognition device 10 for the operator of the central control screen of the vehicle, provided by the embodiment of the invention, the current touch information is obtained by responding to the current touch event of the central control screen operator acting on the central control screen; according to the current touch information, inquiring a preset relation between the touch information and a probability function to obtain a current probability function corresponding to the current touch information; calculating to obtain a first probability that the current touch event is from a main driver seat user by using the current probability function; and obtaining the identity of the central control screen operator based on the comparison result of the preset probability threshold and the first probability so as to identify whether the central control screen operator is a driver. Therefore, the identity of the central control screen operator can be recognized without adding extra hardware equipment and wiring harnesses, the influence of seat replacement of personnel is avoided, the misjudgment situation is reduced, the reliability is high, and meanwhile, when a touch event occurs, the real-time performance is high, the response calculation is timely carried out, and the real-time performance is high.
The vehicle provided by the embodiment of the invention comprises a vehicle body and the vehicle central control screen operator identity recognition device 10.
For a specific working process of the vehicle central screen control operator identification device 10, reference may be made to the working process of the vehicle central screen control operator identification device 10 described in the foregoing embodiment, and details are not repeated here.
According to the vehicle provided by the embodiment of the invention, the current touch information is acquired by responding to the current touch event of the central control screen acted by the central control screen operator; according to the current touch information, inquiring a preset relation between the touch information and a probability function to obtain a current probability function corresponding to the current touch information; calculating to obtain a first probability that the current touch event is from a main driver seat user by using the current probability function; and obtaining the identity of the central control screen operator based on the comparison result of the preset probability threshold and the first probability so as to identify whether the central control screen operator is a driver. Therefore, the identity of the central control screen operator can be recognized without adding extra hardware equipment and wiring harnesses, the influence of seat replacement of personnel is avoided, the misjudgment situation is reduced, the reliability is high, and meanwhile, when a touch event occurs, the real-time performance is high, the response calculation is timely carried out, and the real-time performance is high.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A method for identifying the identity of an operator in a control screen of a vehicle is characterized by comprising the following steps:
responding to a current touch event acted on the central control screen by a central control screen operator, and acquiring current touch information;
according to the current touch information, inquiring a preset relation between the touch information and a probability function to obtain a current probability function corresponding to the current touch information;
calculating to obtain a first probability that the current touch event is from a main driver seat user by using the current probability function;
and obtaining the identity of the central control screen operator based on the comparison result of the preset probability threshold and the first probability.
2. The vehicle center screen operator identification method of claim 1, wherein the current touch information includes coordinates of a center point of a current elliptical area, an angle between a major axis of the current elliptical area and a positive direction of an X-axis of a center screen coordinate system; wherein the current elliptical area is one of elliptical areas generated by a click event of the current touch event.
3. The vehicle center screen operator identification method of claim 2, wherein when the total number of the elliptical areas is equal to 1, the current elliptical area is one of the elliptical areas generated by the click event of the current touch event;
when the total number of the elliptical areas is greater than 1, the current elliptical area is an elliptical area with the smallest difference between the X-axis coordinate of a long axis vertex and the X-axis coordinate of a corresponding long axis vertex in the generated elliptical area.
4. The method for identifying the operator at the control screen of the vehicle as claimed in claim 2, wherein the step of obtaining the current probability function corresponding to the current touch information by querying from the relationship between the preset touch information and the probability function according to the current touch information comprises:
determining a current sub-screen area where the current touch event is located according to the central point coordinates;
and inquiring a current probability function corresponding to the current touch information from a preset relation between the touch information and the probability function according to the current sub-screen area.
5. The method as claimed in claim 4, wherein said calculating a first probability that the current touch event originates from a master operator using the current probability function comprises:
and substituting the angle between the long axis of the current elliptical area and the positive direction of the X axis of the central control screen coordinate system into the current probability function, and calculating to obtain a first probability that the current touch event is from a main driving position user.
6. The method for identifying an operator at a control panel of a vehicle according to claim 1, wherein the relationship between the touch information and the probability function is constructed by:
responding to a plurality of simulated touch events acted on the central control screen by a central control screen operator, and acquiring a plurality of simulated touch information; wherein the plurality of simulated touch events comprise a plurality of simulated touch events from a user in the primary driver seat and a plurality of simulated touch events from a user in the secondary driver seat;
according to the plurality of pieces of simulated touch information, counting effective simulated touch information of the simulated touch events falling on a plurality of effective angle intervals of each effective sub-screen area; the effective sub-screen area is a sub-screen area, the number of times of the simulated touch events falling on the sub-screen area is not less than a preset first time threshold, and the effective angle interval is an angle interval, the number of times of the simulated touch events falling on the angle interval is not less than a corresponding preset second time threshold;
according to the effective simulation touch information, constructing two-dimensional discrete data of a simulation touch event from a main driver seat user;
fitting the two-dimensional discrete data to obtain a probability function which is corresponding to the simulated touch event of each effective sub-screen area and is originated from a main driver seat user;
and judging whether a probability function corresponding to the simulated touch event of each sub-screen area and derived from the main driving position user is obtained or not, if not, returning to the step of counting the effective simulated touch information of the simulated touch event falling on a plurality of effective angle intervals of each effective sub-screen area according to a plurality of simulated touch information until the probability function corresponding to the simulated touch event of each sub-screen area and derived from the main driving position user is obtained.
7. The method for identifying an operator of a control panel in a vehicle according to claim 6, wherein said counting valid simulated touch information of simulated touch events falling on valid angle intervals of each valid sub-screen area according to the valid simulated touch information comprises:
counting the first times of the simulated touch events in each sub-screen area according to the plurality of simulated touch information, and eliminating the sub-screen areas with the first times smaller than a preset first time threshold value to obtain a plurality of effective sub-screen areas;
counting second times of the simulated touch events falling on the effective sub-screen areas, and eliminating angle intervals with the second times smaller than a preset second time threshold value to obtain a plurality of effective angle intervals falling on each effective sub-screen area;
and counting effective simulated touch information of the simulated touch events falling on a plurality of effective angle intervals of each effective sub-screen area.
8. The method of claim 6, wherein said constructing two-dimensional discrete data from which simulated touch events originate from the master driver seat user based on said valid simulated touch information comprises:
filling effective simulation touch information of simulation touch events falling on a plurality of effective angle intervals of each effective sub-screen area into a first two-dimensional array established according to the sub-screen area and the angle intervals;
calculating to obtain a second probability that the simulated touch event is from the main driving position user according to the times that the simulated touch event is from the main driving position user in the first two-dimensional array;
and filling the second probability into a second two-dimensional array established according to the sub-screen area and the angle interval to obtain two-dimensional discrete data of the simulated touch event from the main driver seat user.
9. A control screen operator identification device in a vehicle, comprising:
the current touch information acquisition module is used for responding to a current touch event acted on the central control screen by a central control screen operator and acquiring current touch information;
a current probability function obtaining module, configured to obtain, according to the current touch information, a current probability function corresponding to the current touch information by querying a preset relationship between the touch information and the probability function;
the first probability acquisition module is used for calculating and obtaining a first probability that the current touch event is from a main driver seat user by using the current probability function;
and the central control screen operator identity recognition module is used for obtaining the identity of the central control screen operator based on a comparison result of a preset probability threshold and the first probability.
10. A vehicle, characterized by comprising: a vehicle body and a screen operator identification device in a vehicle as claimed in claim 9.
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Application publication date: 20220301 Assignee: IFLYTEK Co.,Ltd. Assignor: Xinghe Zhilian Automobile Technology Co.,Ltd. Contract record no.: X2023980047914 Denomination of invention: A method, device, and vehicle for identifying the identity of an operator on a vehicle central control screen Granted publication date: 20220415 License type: Common License Record date: 20231122 |