CN111890928A - Automobile liquid crystal instrument pointer control method - Google Patents
Automobile liquid crystal instrument pointer control method Download PDFInfo
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- CN111890928A CN111890928A CN202010687011.7A CN202010687011A CN111890928A CN 111890928 A CN111890928 A CN 111890928A CN 202010687011 A CN202010687011 A CN 202010687011A CN 111890928 A CN111890928 A CN 111890928A
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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
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Abstract
The invention relates to the technical field of automobile instruments, and particularly discloses a pointer control method of an automobile liquid crystal instrument, wherein the pointer control method comprises the following steps: determining the rated measuring range of the instrument panel of the expected control object; determining the interpolation number and the interpolation function of the expected control object according to the current value of the pointer on the instrument panel of the expected control object, the expected value of the expected control object and the rated range of the instrument panel of the expected control object; interpolating between the current value of the pointer on the instrument panel of the expected control object and the expected value of the expected control object according to the interpolation number of the expected control object and the interpolation function, and obtaining an interpolation array; acquiring a current display value of an expected control object from the interpolation array according to the refreshing frequency; generating an instrument panel pointer angle according to the current display value of the expected control object; and generating a dashboard pointer control signal according to the dashboard pointer angle. The automobile liquid crystal instrument pointer control method provided by the invention can more intuitively express the action trend of the pointer.
Description
Technical Field
The invention relates to the technical field of automobile instruments, in particular to a pointer control method of an automobile liquid crystal instrument.
Background
The automobile liquid crystal instrument is more and more popular, the design science and technology sense of the automobile liquid crystal instrument is strong, the intelligent degree is high, the display content is rich, a car owner can enjoy better driving experience, and the automobile liquid crystal instrument is loved by a plurality of consumers. The application scenes of the automobile liquid crystal instrument are more and more, the instrument is an important interface for information communication between a driver and an automobile, the instrument panel is the most important display content in the instrument, the automobile driving condition and the information content of an ECU (electronic control unit) are remarkably increased along with the development of automobile electronic technology, and the driver needs to know whether various parameters are normal or not from the instrument panel more, more timely and more accurately when driving the automobile so as to take measures in time and prevent accidents, so that the control on the pointer of the instrument panel has higher requirements. Along with the improvement of the quality of the whole vehicle, the requirement of consumers on the display effect of the liquid crystal instrument is higher and higher, particularly, the control of a dial pointer needs to be finer, the action effect needs to be smooth and natural, the displayed content is richer, and the probability of the interference of the acquired data is higher. Different driving habits and different driving scenes have different data change curves of the instrument pointer, the traditional control display mode is difficult to reflect the acquired data information efficiently, truly and accurately, and the smooth action of the pointer is difficult to control in a complex scene. The general data processing method cannot intuitively express the action trend of the pointer, cannot judge the processes of stable change, accelerated rise or accelerated fall of the action of the pointer from the sense, has poor visual effect and influences the driving experience of a user.
In the prior art, a filtering algorithm is generally adopted, but the filtering algorithm needs to continuously acquire data for a plurality of times until the data is stable and can not approach to real data, and cannot adapt to continuously and rapidly changing data, so that the filtering algorithm has limitations in practical application scenes, and secondly, error ranges of the filtering algorithm are difficult to define in different scenes, so that pointer precision is influenced, and the trend of pointer change cannot be accurately and visually expressed.
Disclosure of Invention
The invention provides a method for controlling a pointer of an automobile liquid crystal instrument, which solves the problem that the change trend of the pointer cannot be visually expressed in the related technology.
As one aspect of the present invention, there is provided a liquid crystal instrument pointer control method for an automobile, comprising:
determining the rated measuring range of the instrument panel of the expected control object;
determining the interpolation number and the interpolation function of the expected control object according to the current value of the pointer on the instrument panel of the expected control object, the expected value of the expected control object and the rated range of the instrument panel of the expected control object;
interpolating between the current value of the pointer on the instrument panel of the expected control object and the expected value of the expected control object according to the interpolation number and the interpolation function of the expected control object, and obtaining an interpolation array;
acquiring the current display value of the expected control object from the interpolation array according to the refreshing frequency;
generating an instrument panel pointer angle according to the current display value of the expected control object;
and generating a dashboard pointer control signal according to the dashboard pointer angle.
Further, the determining the interpolation number and the interpolation function of the desired control object according to the current value of the on-instrument-panel pointer of the desired control object, the desired value of the desired control object and the instrument panel rated range of the desired control object includes:
calculating the interpolation number of the expected control object according to the current value of the pointer on the instrument panel of the expected control object, the expected value of the expected control object and the rated range of the instrument panel of the expected control object;
calculating a data change trend between the current value of the pointer on the instrument panel of the expected control object and the expected value according to the current value of the pointer on the instrument panel of the expected control object, the expected value of the expected control object and the rated range of the instrument panel of the expected control object;
and determining an interpolation function of the expected control object according to the data change trend between the current value of the pointer on the instrument panel of the expected control object and the expected value.
Further, the trend of data change between the current value of the pointer on the instrument panel of the desired control object to the desired value comprises: smooth, rapid acceleration, and rapid deceleration, the interpolation function of the desired control object comprising: an interpolation function corresponding to the stationary object, an interpolation function corresponding to the rapid acceleration, and an interpolation function corresponding to the rapid deceleration.
Further, the determining the instrument panel rated range of the desired control object comprises:
determining a numerical value change range of a dashboard pointer of an expected control object;
and determining the rated instrument panel measuring range of the expected control object according to the instrument panel pointer value change range of the expected control object, wherein the minimum value of the expected control object is the minimum value of the instrument panel pointer value change range of the expected control object, and the maximum value of the expected control object is the maximum value of the instrument panel pointer value change range of the expected control object.
Further, the calculating the interpolation number of the desired control object according to the current value of the on-instrument-panel pointer of the desired control object, the desired value of the desired control object and the instrument panel rated range of the desired control object includes:
determining the total action time length of a dashboard pointer of an expected control object from the minimum value of the numeric change range of the dashboard pointer of the expected control object to the maximum value of the numeric change range of the dashboard pointer;
calculating the expected value travel of the expected control object according to the current value of the pointer on the instrument panel of the expected control object and the expected value of the expected control object;
calculating the action time consumption of the instrument panel pointer of the expected control object between the current value of the pointer on the instrument panel and the expected value according to the expected value travel, the rated range of the instrument panel and the total action time length of the expected control object;
and calculating the interpolation number of the expected control object according to the action consumed time.
Further, the formula for calculating the interpolation number of the desired control object according to the action elapsed time includes:
C＝INT(fps×Te))，
wherein C represents the number of interpolation of the desired control object, TeAnd showing that the action is time-consuming, fps shows the interface refreshing frequency of the instrument panel of the expected control object, and INT shows rounding.
Further, the method for controlling the automobile liquid crystal instrument pointer further comprises the following steps of determining the interpolation number and the interpolation function of the expected control object according to the current value of the pointer on the instrument panel of the expected control object, the expected value of the expected control object and the rated instrument panel range of the expected control object, wherein the steps are carried out before:
acquiring the current value of the pointer on the instrument panel of the expected control object,
and acquiring the real-time numerical value of the expected control object, and taking the real-time numerical value of the expected control object as the expected numerical value of the expected control object.
Further, when the real-time value of the desired control object changes, the new real-time value of the desired control object is substituted for the desired value of the current desired control object, and the instrument panel pointer control signal is regenerated.
Further, the obtaining the current display value of the desired control object from the interpolation array according to the refresh frequency includes:
when the refresh times of the instrument panel of the expected control object are less than the interpolation number, repeatedly executing the following steps:
and when the dashboard of the expected control object is refreshed once, acquiring the current display value of the expected control object from the interpolation array.
Further, the desired control object includes: any one of a speedometer, a tachometer, a water thermometer, a fuel gauge and a new energy automobile power gauge.
The method for controlling the pointer of the automobile liquid crystal instrument marks the target position as the expected value of the pointer end point, converts the pointer into a continuous and tiny action process towards the expected value through one-time jumping, covers the expected value when new data exists in the action process and recalculates the action process, and if no data change exists in the action process, the expected data is regarded as the final target data, so that the process can prevent data jitter and mutation and adapt to the continuously and rapidly changing data, and the problems of poor adaptability limitation, inaccurate pointer position and difficulty in controlling the error range in different scenes such as data mutation or continuous and rapid change and the like in the prior art are solved; different interpolation algorithms are used for interpolation according to the data change rule, so that the action trend of the pointer can be more intuitively represented.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a flow chart of a method for controlling a liquid crystal instrument pointer of an automobile according to the present invention.
Fig. 2 is a flowchart of a specific implementation process of the method for controlling the pointer of the liquid crystal instrument of the automobile.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution 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.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this embodiment, a method for controlling a liquid crystal instrument pointer of an automobile is provided, and fig. 1 is a flowchart of a method for controlling a liquid crystal instrument pointer of an automobile according to an embodiment of the present invention, as shown in fig. 1, including:
and S110, determining the rated range of the instrument panel of the control object.
Specifically, the determining the instrument panel rated range of the desired control object comprises the following steps:
determining a range of dashboard pointer values [ R ] for a desired control objectmin,Rmax]；
Determining the rated measuring range R-R of the instrument panel of the expected control object according to the numerical value change range of the instrument panel pointer of the expected control objectmax-RminWherein the minimum value of the expected control object is the minimum value R of the instrument panel pointer value variation range of the expected control objectminThe maximum value of the expected numerical value of the expected control object is the maximum value R of the numerical value change range of the instrument panel pointer of the expected control objectmax。
It should be noted that the desired control object includes: any one of a speedometer, a tachometer, a water thermometer, a fuel gauge and a new energy automobile power gauge.
It should be understood that the desired control object may also be other contents that can be displayed by the meter, and is not limited herein.
And S120, determining the interpolation number and the interpolation function of the expected control object according to the current value of the pointer on the instrument panel of the expected control object, the expected value of the expected control object and the rated instrument panel range of the expected control object.
Specifically, the determining the interpolation number and the interpolation function of the desired control object according to the current value of the on-instrument-panel pointer of the desired control object, the desired value of the desired control object and the instrument panel rated range of the desired control object includes:
calculating the interpolation number of the expected control object according to the current value of the pointer on the instrument panel of the expected control object, the expected value of the expected control object and the rated range of the instrument panel of the expected control object;
calculating a data change trend between the current value of the pointer on the instrument panel of the expected control object and the expected value according to the current value of the pointer on the instrument panel of the expected control object, the expected value of the expected control object and the rated range of the instrument panel of the expected control object;
and determining an interpolation function of the expected control object according to the data change trend between the current value of the pointer on the instrument panel of the expected control object and the expected value.
More specifically, the calculating the number of interpolation of the desired control object according to the current value of the on-instrument-panel pointer of the desired control object, the desired value of the desired control object, and the instrument panel rated range of the desired control object includes:
determining the total action time length of a dashboard pointer of an expected control object from the minimum value of the numeric change range of the dashboard pointer of the expected control object to the maximum value of the numeric change range of the dashboard pointer;
calculating the expected value travel of the expected control object according to the current value of the pointer on the instrument panel of the expected control object and the expected value of the expected control object;
calculating the action time consumption of the instrument panel pointer of the expected control object between the current value of the pointer on the instrument panel and the expected value according to the expected value travel, the rated range of the instrument panel and the total action time length of the expected control object;
and calculating the interpolation number of the expected control object according to the action consumed time.
More specifically, the formula for calculating the interpolation number of the desired control object according to the action elapsed time includes:
C＝INT(fps×Te))，
wherein C represents the number of interpolation of the desired control object, TeAnd showing that the action is time-consuming, fps shows the interface refreshing frequency of the instrument panel of the expected control object, and INT shows rounding.
S130, interpolating between the current value of the pointer on the instrument panel of the expected control object and the expected value of the expected control object according to the interpolation number of the expected control object and an interpolation function, and obtaining an interpolation array;
and S140, acquiring the current display value of the expected control object from the interpolation array according to the refreshing frequency.
It should be understood that the obtaining of the current display value of the desired control object from the interpolation array according to the refresh frequency includes:
when the refresh times of the instrument panel of the expected control object are less than the interpolation number, repeatedly executing the following steps:
and when the dashboard of the expected control object is refreshed once, acquiring the current display value of the expected control object from the interpolation array.
S150, generating an instrument panel pointer angle according to the current display value of the expected control object;
and S160, generating a dashboard pointer control signal according to the dashboard pointer angle.
The method for controlling the pointer of the automobile liquid crystal instrument marks the target position as the expected value of the pointer end point, converts the pointer into a continuous and tiny action process towards the expected value through one-time jumping, covers the expected value when new data exists in the action process and recalculates the action process, and if no data change exists in the action process, the expected data is regarded as the final target data, so that the process can prevent data jitter and mutation and adapt to the continuous and fast changing data, and the problems of poor adaptability, inaccurate pointer position and difficulty in controlling the error range in different scenes such as data mutation or continuous and fast changing and the like in the prior art are solved; different interpolation algorithms are used for interpolation according to the data change rule, so that the action trend of the pointer can be more intuitively represented.
It should be noted that the trend of data change between the current value of the on-dashboard pointer of the desired control object and the desired value includes: smooth, rapid acceleration, and rapid deceleration, the interpolation function of the desired control object comprising: an interpolation function corresponding to the stationary object, an interpolation function corresponding to the rapid acceleration, and an interpolation function corresponding to the rapid deceleration.
It should be understood that the liquid crystal instrument pointer control method for the automobile further comprises the steps of determining the interpolation number and the interpolation function of the expected control object according to the current value of the pointer on the instrument panel of the expected control object, the expected value of the expected control object and the rated instrument panel range of the expected control object, and then:
acquiring the current value of the pointer on the instrument panel of the expected control object,
and acquiring the real-time numerical value of the expected control object, and taking the real-time numerical value of the expected control object as the expected numerical value of the expected control object.
It should be noted that, when the real-time value of the desired control object changes, the new real-time value of the desired control object is substituted for the desired value of the current desired control object, and the instrument panel pointer control signal is regenerated.
The following describes in detail a specific implementation process of the liquid crystal instrument pointer control method for an automobile according to an embodiment of the present invention with reference to fig. 2.
Step one, creating a data expected control object wish _ ctrl _ object;
step two, determining the numerical value change range [ R ] of the instrument panel pointermin,Rmax]Rated range R ═ Rmax-RminSetting a desired maximum value R of a desired control objectmaxMinimum value Rmin；
Step three, determining the slave R of the instrument panel pointer according to the performance requirementminTo RmaxTotal duration of action TGeneral assembly。
Step four, obtaining the current value V of the meter pointer from the expected control objectcObtaining a real-time value V from a signal acquisition buseWill value VeSet to a desired value of the desired control object, i.e. the position value to which the pointer is desired to reach next time, the pointer is desired to move from the current value to the desired value travel Vd＝Ve-VcTime consuming action
Wherein R is the rated range calculated in the second step;
step five, calculating the number C of interpolation required when the current position of the pointer reaches the expected position, wherein the value C is expressed by a formula C-INT (fps multiplied by T)e) Fps represents the current human-computer interface refresh frame rate, and INT represents rounding.
Step six, calculating the data change trend,
when-0.125<K<Is stable at 0.125, and K is more than or equal to 0.125<1 hour indicates rapid acceleration, -1.0<When K is less than or equal to-0.125, the rapid deceleration is shown.
It should be noted that the values 0.125 and 1 are empirical values.
Step seven, binding an interpolation function for the expected control object according to the calculation result of the step six, wherein linear interpolation is used when the change is stable
By interpolation, rapid acceleration using functions
Interpolation, rapid deceleration using function
Interpolation is carried out, wherein T represents the time consumed by pointer action and the value range is [0, Te]；
Step eight, interpolating between the current value and the expected value of the pointer according to the interpolation number obtained by calculation in the step five and the interpolation function obtained by calculation in the step seven, and Vi＝Vc+ f (t), wherein C data are inserted altogether. Vi＝{V0,V1,...VCWherein i has a value in the range of [0, C ]]；
Step nine, obtaining the current display value V from the step seven in each frame refreshing sequenceiAnd resetting the current value Vc＝ViAccumulating and adding 1 every time of frame refreshing, and repeating the step when the count is less than the threshold value until C times of repeating or the real-time collected data is changed;
step ten, when the collected real-time data changes, covering the expected value of the control object, repeating the step four to the step eight, and recalculating the pointer action process.
To sum up, the method for controlling the pointer of the liquid crystal instrument of the automobile, provided by the embodiment of the invention, converts the pointer jump into the pointer tiny action, covers the expected value when new data exists, recalculates the action process of the pointer, namely, prevents data mutation and can cope with continuous and rapid changes. The embodiment of the invention can be widely applied to the pointer control of the liquid crystal instrument with the dial plate, such as an automobile speedometer, a tachometer, a power meter, a fuel meter and the like.
The following description will specifically take the desired control target as an example of a power meter.
Step one, creating a data expected control object data _ wish _ object;
step two, determining the rated variation range of the power dial, R in the embodiment of the inventionminIs set to-100 kw, RmaxIs set to 200kw, a nominal measurement range R ═ Rmax-Rmin，R＝300kw；
Step three, determining the slave R of the instrument panel pointer according to the performance requirementminTo RmaxTotal duration of action TGeneral assemblyIn the embodiment of the present invention, the time is set to 2 seconds.
Step four, obtaining the current value V of the meter pointer from the expected control objectcObtaining a real-time value V from a signal acquisition buseIf at this time Vc-50kw, real time value V collectedcSet the sampled signal to the desired value V at 50kwe(ii) a Expected value travel Vd＝Ve-Vc，Vd100kw, the action takes time
Step five, calculating the number C of interpolation required when the current position of the pointer reaches the expected position, wherein the value C is expressed by a formula C-INT (fps multiplied by T)e) Setting the human-computer interface refresh rate fps of the instrument to be 30fps, and substituting the rate fps into a formula
C-20, meaning that a total of 20 values need to be inserted from the current value-50 kw to the desired value 50 kw;
step six, calculating the change trend of the pointer, and substituting the parameters into the formula
The data had a sharp rising trend.
Step seven, setting different interpolation functions of the control object according to the calculation result of the step six, and setting the interpolation function as a rapid acceleration interpolation function when the data with a rapid rising trend
Step eight, calculating according to the step fiveThe interpolation number and the interpolation function obtained by the calculation in the step seven are used for interpolating between the current value and the expected value of the pointer, 20 numerical values are inserted in the example, and the result is [ V ]1,V2,V3...V20]＝[-33.86,-22.12,-12.89...50]；
Step nine, obtaining the current display value V from the step eight array when starting to refresh the frame each time from the time point 0iUsing ViCalculating the angle of the pointer, displaying the angle on the interface, and resetting the current value Vc＝Vi；
And step ten, monitoring the change of the data to be acquired, covering the expected value of the control object when the acquired real-time data changes, repeating the step four to the step nine, recalculating the action process of the pointer and displaying.
Compared with the prior art, the automobile liquid crystal instrument pointer control method provided by the embodiment of the invention has the following advantages:
1. the target position of the pointer is set as an expected value, the pointer is converted into a plurality of times of continuous micro actions which are close to the expected value through one-time jumping, the expected value is covered and the action process is recalculated when new data exist in the action process, and the adaptability of preventing the pointer from shaking and changing suddenly under different scenes such as sudden change of data or continuous quick change is improved.
2. In the pointer action process, interpolation is carried out by using different interpolation algorithms according to the data change rule, so that the error range is reduced, and the pointer position accuracy is improved.
3. The pointer change trend is more intuitively and accurately expressed by using a steady change, rapid rise and rapid fall interpolation algorithm, and the visual effect is improved.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A method for controlling an automobile liquid crystal instrument pointer is characterized by comprising the following steps:
determining the rated measuring range of the instrument panel of the expected control object;
determining the interpolation number and the interpolation function of the expected control object according to the current value of the pointer on the instrument panel of the expected control object, the expected value of the expected control object and the rated range of the instrument panel of the expected control object;
interpolating between the current value of the pointer on the instrument panel of the expected control object and the expected value of the expected control object according to the interpolation number and the interpolation function of the expected control object, and obtaining an interpolation array;
acquiring the current display value of the expected control object from the interpolation array according to the refreshing frequency;
generating an instrument panel pointer angle according to the current display value of the expected control object;
and generating a dashboard pointer control signal according to the dashboard pointer angle.
2. The liquid crystal instrument pointer control method for an automobile according to claim 1, wherein the determining the interpolation number and the interpolation function of the desired control object according to the current value of the pointer on the instrument panel of the desired control object, the desired value of the desired control object and the rated range of the instrument panel of the desired control object comprises:
calculating the interpolation number of the expected control object according to the current value of the pointer on the instrument panel of the expected control object, the expected value of the expected control object and the rated range of the instrument panel of the expected control object;
calculating a data change trend between the current value of the pointer on the instrument panel of the expected control object and the expected value according to the current value of the pointer on the instrument panel of the expected control object, the expected value of the expected control object and the rated range of the instrument panel of the expected control object;
and determining an interpolation function of the expected control object according to the data change trend between the current value of the pointer on the instrument panel of the expected control object and the expected value.
3. The liquid crystal instrument pointer control method for the automobile according to claim 2, wherein the data change trend between the current value of the pointer on the dashboard of the desired control object and the desired value comprises: smooth, rapid acceleration, and rapid deceleration, the interpolation function of the desired control object comprising: an interpolation function corresponding to the stationary object, an interpolation function corresponding to the rapid acceleration, and an interpolation function corresponding to the rapid deceleration.
4. The liquid crystal instrument pointer control method for an automobile according to claim 2, wherein the determining a rated range of a dashboard of a desired control object comprises:
determining a numerical value change range of a dashboard pointer of an expected control object;
and determining the rated instrument panel measuring range of the expected control object according to the instrument panel pointer value change range of the expected control object, wherein the minimum value of the expected control object is the minimum value of the instrument panel pointer value change range of the expected control object, and the maximum value of the expected control object is the maximum value of the instrument panel pointer value change range of the expected control object.
5. The liquid crystal instrument pointer control method for automobiles according to claim 4, wherein said calculating the number of interpolation of said desired control object according to the current value of pointer on instrument panel of said desired control object, the desired value of said desired control object and the rated range of instrument panel of said desired control object comprises:
determining the total action time length of a dashboard pointer of an expected control object from the minimum value of the numeric change range of the dashboard pointer of the expected control object to the maximum value of the numeric change range of the dashboard pointer;
calculating the expected value travel of the expected control object according to the current value of the pointer on the instrument panel of the expected control object and the expected value of the expected control object;
calculating the action time consumption of the instrument panel pointer of the expected control object between the current value of the pointer on the instrument panel and the expected value according to the expected value travel, the rated range of the instrument panel and the total action time length of the expected control object;
and calculating the interpolation number of the expected control object according to the action consumed time.
6. The liquid crystal instrument pointer control method for an automobile according to claim 5, wherein the calculation formula for calculating the interpolation number of the desired control object according to the action elapsed time comprises:
C＝INT(fps×Te))，
wherein C represents the number of interpolation of the desired control object, TeAnd showing that the action is time-consuming, fps shows the interface refreshing frequency of the instrument panel of the expected control object, and INT shows rounding.
7. The liquid crystal meter pointer control method of claim 1, further comprising, prior to the step of determining the number of interpolations and the interpolation function of the desired control object based on the current on-dashboard pointer value of the desired control object, the desired value of the desired control object, and the rated dashboard range of the desired control object:
acquiring the current value of the pointer on the instrument panel of the expected control object,
and acquiring the real-time numerical value of the expected control object, and taking the real-time numerical value of the expected control object as the expected numerical value of the expected control object.
8. The liquid crystal instrument pointer control method of claim 7, wherein when the real-time value of the desired control object changes, the new real-time value of the desired control object is substituted for the desired value of the current desired control object, and the instrument panel pointer control signal is regenerated.
9. The method for controlling the pointer of the liquid crystal instrument of the automobile according to claim 1, wherein the obtaining the current display value of the desired control object from the interpolation array according to the refresh frequency comprises:
when the refresh times of the instrument panel of the expected control object are less than the interpolation number, repeatedly executing the following steps:
and when the dashboard of the expected control object is refreshed once, acquiring the current display value of the expected control object from the interpolation array.
10. The liquid crystal instrument pointer control method for an automobile according to claim 1, wherein the desired control object includes: any one of a speedometer, a tachometer, a water thermometer, a fuel gauge and a new energy automobile power gauge.
Priority Applications (1)
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| CN113525082A (en) * | 2021-06-27 | 2021-10-22 | 东风电驱动系统有限公司 | Method and device for planning motion of virtual pointer of full liquid crystal instrument |
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| CN111890928B (en) | 2023-09-15 |
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