CN112233624A - Backlight processing method, medium and device for instrument panel and vehicle - Google Patents
Backlight processing method, medium and device for instrument panel and vehicle Download PDFInfo
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- CN112233624A CN112233624A CN202011108258.5A CN202011108258A CN112233624A CN 112233624 A CN112233624 A CN 112233624A CN 202011108258 A CN202011108258 A CN 202011108258A CN 112233624 A CN112233624 A CN 112233624A
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- backlight
- brightness
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- instrument panel
- temperature
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
Abstract
The invention discloses a backlight processing method, medium and device of an instrument panel and a vehicle, wherein the backlight processing method of the instrument panel comprises the following steps: acquiring the current temperature of the calibration piece; obtaining the maximum limited brightness of the corresponding backlight lamp according to the current temperature; and when the current brightness of the backlight lamp is greater than the maximum limit brightness, adjusting the brightness of the backlight lamp to the maximum limit brightness. The backlight processing method of the instrument panel can effectively control the temperature of the instrument panel within a reasonable range by controlling the brightness of the backlight lamp on software, ensures the normal work of the instrument panel, and has good universality and low cost.
Description
Technical Field
The invention relates to the technical field of automobile instrument display screens, in particular to a backlight processing method, medium and device of an instrument panel and a vehicle.
Background
With the rapid development of the automobile industry, the automobile instrument is also continuously reformed, functions are unprecedented and the visual effect is more attractive. However, as the instrument panel works for a long time, especially under the conditions of high brightness and high temperature, the temperature of the TFT screen can reach over 90 ℃, and some components in the instrument panel can be damaged due to high temperature, which causes the abnormal function of part of the instrument panel.
Some solutions commonly used at present are reasonable design on appearance structure of an instrument panel, such as increasing heat dissipation holes, or attaching heat conducting fins on a chip to conduct heat to a metal shell, and both reduce the temperature of a TFT screen by increasing heat dissipation. Secondly, a thermistor is arranged in the circuit, and when the circuit works normally, the thermistor has low temperature and small resistance and cannot block the current from passing through when being connected in series in the circuit; when the temperature of the thermistor rises, the resistance is increased, the current in the circuit is rapidly reduced, and further the temperature of the TFT screen is reduced, so that the function of protecting the circuit is realized.
Although the current solutions can reduce the temperature of the TFT screen, the solutions are passive cooling measures, and the high protection effect on the instrument panel is limited.
Disclosure of Invention
The object of the present invention is to solve at least to some extent one of the above mentioned technical problems.
To this end, a first object of the present invention is to provide a backlight processing method for an instrument panel, which actively controls the temperature of the instrument panel by controlling the brightness of the backlight on software.
A second object of the invention is to propose a computer readable storage medium for a dashboard.
The third purpose of the invention is to provide a backlight processing device of an instrument panel.
A fourth object of the invention is to propose a vehicle.
In order to achieve the above object, an embodiment of a first aspect of the present invention provides a backlight processing method for an instrument panel, including the following steps:
s1: acquiring the current temperature of the calibration piece;
s2: obtaining the maximum limited brightness of the corresponding backlight lamp according to the current temperature;
s3: and when the current brightness of the backlight lamp is greater than the maximum limit brightness, adjusting the brightness of the backlight lamp to the maximum limit brightness.
According to the backlight processing method of the instrument panel, after the proper calibration piece is selected, the current temperature of the instrument panel can be reflected through the current temperature of the calibration piece, and then the brightness of the backlight lamp is limited within the maximum limited brightness limited by the current temperature, so that the heat productivity of the backlight lamp is limited, and the temperature of the instrument panel is further reduced. The mode of reducing the temperature of the instrument panel by limiting the brightness of the backlight can actively reduce the temperature when the temperature of the instrument panel is not too high, and the temperature protection measures can well protect devices in the instrument panel. Therefore, the brightness of the backlight lamp is controlled on software, the temperature of the instrument panel can be effectively and dynamically controlled within a reasonable range, the normal work of the instrument panel is guaranteed, and the method is good in universality and low in cost.
In addition, the backlight processing method of the instrument panel in the embodiment of the invention also has the following additional technical characteristics:
in one embodiment of the present invention, step S3 further includes: when the current brightness of the backlight lamp is less than or equal to the maximum limit brightness, the brightness of the backlight lamp is kept unchanged.
In one embodiment of the present invention, in step S1, when the obtained current temperature is equal to or greater than a limit value, the backlight is turned off; when the obtained current temperature is less than the limit value, the above steps S2, S3 are performed again.
In one embodiment of the present invention, in step S1, the thermistor connected to the backlight is used as the index, and the obtained current resistance temperature of the thermistor is used as the current temperature.
In one embodiment of the present invention, the step of obtaining the current temperature of the target at step S1 includes the following steps:
acquiring a current AD value of the thermistor;
and obtaining the current resistance temperature of the thermistor according to the current AD value.
In order to achieve the above object, a second aspect embodiment of the present invention proposes a computer readable storage medium, on which a backlight brightness processing program is stored, which, when executed by a processor, implements a backlight processing method of an instrument panel according to any one of the first aspect embodiments of the present invention.
The computer-readable storage medium of the embodiment of the invention can adjust the brightness of the backlight lamp on the basis of the current temperature of the calibration piece on the basis of software, effectively and dynamically control the temperature of the instrument panel within a reasonable range, has accurate and reliable adjustment, saves the manufacturing cost and has strong applicability.
In order to achieve the above object, a third embodiment of the present invention provides a backlight processing apparatus for an instrument panel, including:
the first acquisition module is used for acquiring the current temperature of the calibration piece;
a second obtaining module, configured to obtain a maximum limited brightness of the backlight corresponding to the current temperature;
and the brightness processing module adjusts the brightness of the backlight lamp to the maximum limit brightness when the current brightness of the backlight lamp is greater than the maximum limit brightness.
The backlight processing device of the instrument panel provided by the embodiment of the invention can adjust the brightness of the backlight lamp according to the current temperature of the calibration piece, effectively and dynamically control the temperature of the instrument panel within a reasonable range, and is accurate and reliable in adjustment.
In addition, the server of the embodiment of the present invention further has the following additional technical features:
in one embodiment of the present invention, when the current brightness of the backlight is equal to or less than the maximum limit brightness, the brightness processing module keeps the brightness of the backlight unchanged.
In an embodiment of the present invention, with a thermistor connected to the backlight as the scaling element, the first obtaining module obtains a current AD value of the thermistor first, and then obtains the current resistance temperature of the thermistor according to the current AD value.
In order to achieve the above object, a fourth aspect embodiment of the present invention proposes a vehicle including the backlight processing device of the instrument panel according to any one of the third aspect embodiments of the present invention.
According to the vehicle provided by the embodiment of the fourth aspect of the invention, the brightness of the backlight lamp can be adjusted according to the current temperature of the calibration piece, the temperature of the instrument panel is effectively and dynamically controlled within a reasonable range, the normal operation of the instrument panel of the vehicle is ensured, and the applicability is good.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic diagram of a backlight processing method of an instrument panel according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a backlight processing method of an instrument panel according to another embodiment of the present invention.
Fig. 3 is a schematic diagram of a backlight processing method of an instrument panel according to still another embodiment of the present invention.
Fig. 4 is a schematic diagram of obtaining a current temperature of the index member in the backlight processing method of the instrument panel according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a computer-readable storage medium according to an embodiment of the present invention.
Fig. 6 is a graph of the corresponding relationship between the current limiting ratio of the backlight lamp when the NTC thermistor is at different temperatures in a specific application scenario.
Fig. 7 is a schematic structural diagram of a backlight processing device of an instrument panel according to an embodiment of the invention.
Fig. 8 is a schematic structural diagram of a backlight processing device of an instrument panel according to another embodiment of the present invention.
Fig. 9 is a schematic diagram of a backlight processing device of an instrument panel according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
A backlight processing method of an instrument panel, a computer-readable storage medium 3, a backlight processing device 4, and a vehicle according to an embodiment of the present invention will be described below with reference to fig. 1 to 9.
As shown above, since the current solution makes the current solution by changing the structure of the dashboard and the hardware structure, the temperature protection measures for the devices inside the dashboard are passive, and the prior art does not make improvements in the software of the dashboard to reduce the temperature of the dashboard.
In order to solve the problems, the invention provides a backlight processing method of an instrument panel, which can effectively and dynamically control the temperature of the instrument panel by controlling the brightness of a backlight lamp 2 on software, ensures the normal work of the instrument panel within a reasonable range, and has good universality and low cost.
Fig. 1 is a schematic diagram of a backlight processing method of an instrument panel according to an embodiment of the present invention.
As shown in fig. 1, the backlight processing method of the instrument panel may include:
s1: acquiring the current temperature of the standard 1;
it can be understood that, the instrument panel works under the high temperature condition, some heat-labile components in the instrument panel are easy to be damaged, and in order to ensure the normal work of the instrument panel, the temperature of the instrument panel is required to be ensured not to be too high. In the scheme of this application, after having selected suitable standardization 1, through the current temperature of tracking standardization 1, can track whether the overall temperature of panel board is too high. It will also be appreciated that the heat from the instrument panel is mainly from ambient heat (e.g. heat absorbed by direct sunlight), and from the heat generated by the internal components when the instrument panel is in operation, and the obtained current temperature of the target 1 reflects the current overall temperature condition of the instrument panel under the dual actions of its own operation and the external environment.
Specifically, the index 1 may be a component selected from the existing structure of the instrument panel (for example, a thermistor in the backlight circuit), or may be a component added to the instrument panel to adapt to the present solution (for example, a temperature sensor disposed on a TFT screen); the index 1 may be the most temperature sensitive part of the instrument panel or the easiest part of the instrument panel to measure, and the index 1 is not limited herein. The current temperature may be a temperature reflected by a certain characteristic of the component or may be a temperature of the component directly detected by the detecting member.
S2: obtaining the maximum limited brightness of the corresponding backlight lamp 2 according to the current temperature;
s3: when the current brightness of the backlight 2 is greater than the maximum limit brightness, the brightness of the backlight 2 is adjusted to the maximum limit brightness.
During the operation of the instrument panel, the heat generation amount of the backlight 2 is large relative to the total heat generation amount of the instrument panel. Therefore, in the scheme of the application, the total heat productivity of the instrument panel can be limited by actively limiting the brightness of the backlight 2, so that the temperature of the instrument panel is limited. The maximum limited brightness of the backlight 2 corresponding to the current temperature in step S2 is the maximum brightness that the backlight 2 can reach when the standard 1 is at the current temperature, on the premise of ensuring the stable operation and the working life of the instrument panel, and the maximum brightness can be obtained through experiments or calculation, simulation, and the like. The maximum limit brightness of the backlight 2 used in actual use may be adaptively adjusted based on the above-described experiment, or a numerical value obtained by calculation, simulation, or the like.
In some embodiments, as shown in fig. 6, the NTC thermistor in the backlight circuit is selected as the calibration 1 in the method, and the obtained current resistance temperature of the NTC thermistor is taken as the current temperature. In this method, the brightness of the backlight 2 is adjusted by adjusting the current of the backlight 2, the brightness of the backlight 2 is proportional to the current of the backlight 2, and the maximum limit brightness of the backlight 2 at a certain temperature is equal to the ratio of the rated brightness of the backlight 2 multiplied by the current limit at the temperature. Based on this, a corresponding relation graph of the NTC temperature and the current limit ratio can be obtained through experiments, calculation, simulation, and the like, and when the NTC thermistor is at a certain temperature, the current of the backlight 2 can be controlled within the corresponding current limit ratio, so that the brightness of the backlight 2 at the temperature can be limited within the maximum limit brightness. For example, when the temperature of the NTC thermistor is 92 degrees, the corresponding current limit ratio is 60%, and after the current of the backlight 2 is adjusted to 60% according to step S3, the luminance of the backlight 2 can reach a level of 60% of the rated luminance, thereby greatly limiting the amount of heat generation of the backlight 2, and controlling the overall temperature so that the temperature of the index 1 does not excessively rise. If the current temperature of the index 1 continues to rise, for example, to 94 degrees, and the current limit ratio is 30%, the brightness of the backlight 2 can reach a level of 30% of the rated brightness after the current of the backlight 2 is adjusted to 30% according to step S3, so that the heat generation amount of the backlight 2 can be further limited, and the overall temperature can be controlled. With such an arrangement, the luminance of the backlight 2 can be dynamically controlled in real time according to the NTC temperature-current limit ratio map, so that the dynamic real-time control of the temperature of the instrument panel can be achieved.
According to the backlight processing method of the instrument panel, after the proper calibration piece 1 is selected, the current temperature of the instrument panel can be reflected through the current temperature of the calibration piece 1, and then the brightness of the backlight 2 is limited within the maximum limited brightness limited by the current temperature, so that the heat productivity of the backlight 2 is limited, and the temperature of the instrument panel is further reduced. The mode of reducing the temperature of the instrument panel by limiting the brightness of the backlight 2 can actively reduce the temperature when the temperature of the instrument panel is not too high, and the temperature protection measures can well protect devices in the instrument panel. The method can effectively and dynamically control the temperature of the instrument panel by controlling the brightness of the backlight lamp 2 on software, and the temperature is controlled within a reasonable range, so that the normal work of the instrument panel is ensured.
As shown in FIG. 2, in one embodiment of the present invention, step S3 further includes step S4: when the current brightness of the backlight 2 is equal to or less than the maximum limit brightness, the brightness of the backlight 2 is kept unchanged. When the temperature of the calibration piece 1 does not exceed the critical temperature value, the brightness of the backlight 2 is not limited, and the backlight 2 is turned on according to the preset brightness or according to the selection of an operator (such as a driver); when the temperature of the index 1 exceeds the critical temperature value, the brightness of the backlight 2 is limited, and the brightness of the backlight 2 is limited within the maximum limit brightness. For example, the preset brightness of the backlight 2 is the rated brightness, and when the temperature of the index 1 does not exceed the critical temperature value, the backlight 2 is turned on according to the preset brightness.
Taking the example shown in fig. 6 as an example, when the NTC thermistor is within 90 degrees, the current limiting ratio is 100%, that is, the current of the backlight 2 is not limited, that is, the brightness of the backlight 2 is not limited. When the NTC thermistor exceeds 90 degrees, the current limit ratio decreases, that is, the current of the backlight 2 is limited, thereby limiting the brightness of the backlight 2.
As shown in fig. 3, in one embodiment of the present invention, step S5 is further included in step S1, and when the obtained current temperature is equal to or higher than the limit value, the backlight 2 is turned off; when the obtained current temperature is less than the limit value, the above steps S2, S3 are performed again. It will be appreciated that when the current temperature of the scale 1 exceeds a limit and the backlight circuit is re-operated to illuminate the backlight 2, some components in the instrument panel are more susceptible to damage. Moreover, when the temperature is too high, the brightness of the backlight 2 needs to be adjusted to be extremely low without burning the circuit, and the brightness is too weak to allow an operator to distinguish symbols, patterns, and the like on the instrument panel, and the lamp is not meaningful. Therefore, the limit value is set in the scheme, the limit value is a preset temperature value, the maximum value allowed to be reached by the current temperature of the calibration piece in the backlight brightness adjustment process is reached, when the obtained current temperature is larger than or equal to the limit value, the backlight 2 is turned off, the backlight circuit does not work any more, and all devices of the instrument can be protected. After the temperature drops, the brightness of the backlight 2 is readjusted.
As in the example of fig. 6, when the temperature of the NTC thermistor exceeds 97 degrees, the backlight 2 is directly turned off for protection.
As shown in fig. 4, in one embodiment of the present invention, in step S1, the thermistor connected to the backlight 2 is used as the index 1, and the obtained current resistance temperature of the thermistor is used as the current temperature. In this scheme, the thermistor is connected in series to the backlight 2, and optionally, the thermistor is an NTC thermistor, also called negative temperature coefficient thermistor, which is a sensor resistor whose resistance value decreases with increasing temperature.
Further, the step S1 of obtaining the current temperature of the target 1 includes the following steps:
s101, acquiring a current AD value of the thermistor;
and S102, acquiring the current resistance temperature of the thermistor according to the current AD value.
Here, the thermistor outputs an analog value in operation, and the AD value is a value of a digital signal converted from an analog signal. The current AD value of the thermistor can be directly acquired by the backlight circuit, and there is a certain corresponding relationship between the AD value of the thermistor and the temperature of the thermistor, which is disclosed in the prior art and is not described herein again. The solution here is to obtain the current resistance temperature of the thermistor through the AD value, that is, obtain the current temperature of the target 1 in step S1.
In order to implement the above embodiments, the present invention further proposes a computer readable storage medium 3 having a backlight brightness processing program stored thereon, which, when executed by a processor, implements a backlight processing method of an instrument panel as in any one of the embodiments of the first aspect of the present invention, as shown in fig. 5.
Specifically, the computer-readable storage medium 3 stores a backlight brightness processing program, and during operation, the computer-readable storage medium 3 obtains the current temperature of the index 1, and when the current temperature of the index 1 is greater than a limit value, the backlight 2 is turned off to rapidly reduce the temperature of the instrument panel; when the current temperature of the index 1 is less than the limit value, the maximum limit brightness of the corresponding backlight 2 is determined according to the current temperature of the index 1, the brightness of the current backlight 2 is obtained and compared with the maximum limit brightness of the backlight 2 corresponding to the current temperature. When the current brightness of the backlight 2 is greater than the maximum limit brightness, the brightness of the backlight 2 is adjusted to the maximum limit brightness of the corresponding backlight 2 obtained according to the current temperature of the index 1, and when the current brightness of the backlight 2 is less than or equal to the maximum limit brightness, the brightness of the backlight 2 is kept unchanged.
Further, in operation, the computer readable storage medium 3 obtains the current AD value of the NTC thermistor and performs calculation to obtain the current temperature of the thermistor, so as to determine the current temperature of the instrument panel.
In summary, the computer-readable storage medium 3 according to the embodiment of the present invention can adjust the brightness of the backlight 2 according to the temperature of the calibration piece 1 on the basis of software, so as to effectively and dynamically control the temperature of the instrument panel within a reasonable range, and the adjustment is accurate and reliable, thereby saving the manufacturing cost and having strong applicability.
In order to implement the foregoing embodiments, a backlight processing apparatus 4 for a dashboard is provided in an embodiment of a third aspect of the present invention, as shown in fig. 7, including a first obtaining module 401, a second obtaining module 402, and a brightness processing module 403.
As shown in fig. 8, the first obtaining module 401 is configured to obtain a current temperature of the calibration piece 1;
the second obtaining module 402 is configured to obtain a maximum limited brightness of the backlight 2 corresponding to the current temperature;
when the current brightness of the backlight 2 is greater than the maximum limit brightness, the brightness processing module 403 adjusts the brightness of the backlight 2 to the maximum limit brightness.
When the current luminance of the backlight 2 is equal to or less than the maximum limit luminance, the luminance processing module 403 keeps the luminance of the backlight 2 unchanged.
In some embodiments, when the current temperature obtained by the first obtaining module 401 is greater than or equal to the limit value, the brightness processing module 403 turns off the backlight 2.
Further, with the thermistor connected to the backlight 2 as the index 1, the first obtaining module 401 first obtains the current AD value of the thermistor, and then obtains the current resistance temperature of the thermistor according to the current AD value.
As shown in fig. 9, in the backlight processing apparatus 4 of the instrument panel according to the embodiment of the present invention, the first obtaining module 401 obtains the current temperature of the index 1, specifically, the first obtaining module 401 obtains the current AD value of the thermistor and calculates the current temperature of the thermistor to determine the current temperature of the index 1, the second obtaining module 402 determines the maximum limit brightness of the backlight 2 at different temperatures according to the temperature curve of the index 1, thereby determining the maximum limit brightness of the backlight 2 at the current temperature, compares the brightness of the current backlight 2 with the maximum limit brightness of the backlight 2 corresponding to the current temperature, adjusts the brightness of the backlight 2 to the maximum limit brightness of the backlight 2 corresponding to the current temperature when the current brightness of the backlight 2 is greater than the maximum limit brightness, the current in the circuit is reduced by reducing the brightness of the backlight lamp 2, so that the temperature of an instrument panel is reduced, and the circuit is protected; when the current brightness of the backlight 2 is less than or equal to the maximum defined brightness, the brightness of the backlight 2 is kept unchanged. In summary, the backlight processing device 4 of the instrument panel according to the embodiment of the present invention can adjust the brightness of the backlight 2 according to the temperature of the instrument panel, thereby effectively and dynamically controlling the temperature of the instrument panel within a reasonable range, and the adjustment is accurate and reliable.
In order to implement the above-described embodiment, a fourth aspect embodiment of the present invention proposes a vehicle including the backlight processing device 4 of the instrument panel according to any one of the third aspect embodiments of the present invention.
According to the vehicle provided by the embodiment of the fourth aspect of the invention, the brightness of the backlight 2 can be adjusted according to the temperature of the calibration piece 1, the temperature of the instrument panel is effectively and dynamically controlled within a reasonable range, the normal operation of the instrument panel of the vehicle is ensured, and the applicability is good.
It should be noted that the backlight processing device 4 of the instrument panel can be arranged in any product with a display screen, and the universality is strong.
A backlight processing method of an instrument panel, a computer-readable storage medium 3, a backlight processing device 4, and a vehicle of an embodiment of the present invention are described below with reference to the drawings.
As shown above, since the current solution is limited to the dashboard by changing the structure of the dashboard and the hardware structure, the prior art has not made improvements in the dashboard software to reduce the temperature of the dashboard.
In order to solve the problems, the invention provides a backlight processing method of an instrument panel, which can effectively control the temperature of the instrument panel within a reasonable range by controlling the brightness of a backlight lamp 2 on software, ensures the normal work of the instrument panel, and has good universality and low cost.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like are intended to mean that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A backlight processing method of an instrument panel is characterized by comprising the following steps:
s1: acquiring the current temperature of the calibration piece;
s2: obtaining the maximum limited brightness of the corresponding backlight lamp according to the current temperature;
s3: and when the current brightness of the backlight lamp is greater than the maximum limit brightness, adjusting the brightness of the backlight lamp to the maximum limit brightness.
2. The backlight processing method for the instrument panel according to claim 1, wherein the step S3 further comprises: when the current brightness of the backlight lamp is less than or equal to the maximum limit brightness, the brightness of the backlight lamp is kept unchanged.
3. The backlight processing method for an instrument panel according to claim 1, wherein in step S1, when the obtained current temperature is equal to or higher than a limit value, the backlight is turned off; when the obtained current temperature is less than the limit value, the above steps S2, S3 are performed again.
4. The method according to claim 1, wherein in step S1, a thermistor connected to the backlight is used as the index, and the obtained current resistance temperature of the thermistor is used as the current temperature.
5. The method for backlight processing of instrument panel according to claim 4, wherein the step of obtaining the current temperature of the index at step S1 comprises the steps of:
acquiring a current AD value of the thermistor;
and obtaining the current resistance temperature of the thermistor according to the current AD value.
6. A computer-readable storage medium, characterized in that a backlight brightness processing program is stored thereon, which, when executed by a processor, implements a backlight processing method of an instrument panel according to any one of claims 1 to 5.
7. A backlight processing apparatus for an instrument panel, comprising:
the first acquisition module is used for acquiring the current temperature of the calibration piece;
a second obtaining module, configured to obtain a maximum limited brightness of the backlight corresponding to the current temperature;
and the brightness processing module adjusts the brightness of the backlight lamp to the maximum limit brightness when the current brightness of the backlight lamp is greater than the maximum limit brightness.
8. The backlight processing device for an instrument panel according to claim 7, wherein the brightness processing module keeps the brightness of the backlight unchanged when the current brightness of the backlight is equal to or less than the maximum limit brightness.
9. The backlight processing device of the instrument panel according to claim 7, wherein a thermistor connected to the backlight is used as the index, and the first obtaining module obtains a current AD value of the thermistor and then obtains the current resistance temperature of the thermistor according to the current AD value.
10. A vehicle characterized by comprising a backlight processing device of an instrument panel according to any one of claims 7 to 9.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115202083A (en) * | 2022-07-06 | 2022-10-18 | 深圳市同亮采光电科技有限公司 | Backlight module detection method and device, electronic equipment and storage medium |
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