CN108922494B - Light sensing module fault detection method and device, display screen and air conditioner - Google Patents
Light sensing module fault detection method and device, display screen and air conditioner Download PDFInfo
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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
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/10—Intensity circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
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Abstract
The invention provides a light sensing module fault detection method and device, a display screen and an air conditioner, and relates to the technical field of display devices. The method and the device receive a brightness signal transmitted by a photoelectric conversion module, the brightness signal is used for representing the illumination intensity detected by a light sensing module, then the brightness range where the brightness signal is located and the duration time of the brightness signal in the brightness range are determined, when the duration time is greater than a preset first threshold value, the display module is in a normally-on state due to abnormal light sensing, the number of times of the display screen entering the abnormal light sensing state is accumulated to determine the abnormal number of times, and finally when the abnormal number of times is greater than a preset second threshold value, the display module is controlled to display a fault code; by the method, whether the light sensing module breaks down or is abnormal can be found in time, so that a user is reminded to overhaul the light sensing module in time, and normal use of the display screen is prevented from being influenced.
Description
Technical Field
The invention relates to the technical field of display devices, in particular to a light sensing module fault detection method and device, a display screen and an air conditioner.
Background
With the continuous development of economy, the continuous progress of electronic technology and the continuous improvement of the living and working requirements of people, photosensitive control systems are gradually applied to air conditioners. The photosensitive control system of the air conditioner is a control system for adjusting the brightness of the light of the air conditioner according to the brightness of the external light, specifically, for example, adjusting the brightness of the display screen of the air conditioner or adjusting the brightness of the lamp box of the air conditioner.
However, in the prior art, it is usually only related to how to adjust the brightness of the light of the air conditioner according to the brightness of the external light, but it is impossible to specifically determine whether the light sensing module is faulty or abnormal, and it is impossible to timely remind the user to overhaul the light sensing module.
Disclosure of Invention
In view of the above, the present invention provides a method and an apparatus for detecting a failure of a light sensing module, a display screen and an air conditioner, so as to solve the above problems.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
in a first aspect, the present invention provides a method for detecting a failure of a light sensing module, which is applied to a display screen, where the display screen includes a photoelectric conversion module, the light sensing module, and a display module, and the method for detecting a failure of a light sensing module includes:
s1: receiving a brightness signal transmitted by the photoelectric conversion module, wherein the brightness signal is used for representing the illumination intensity detected by the light sensing module;
s2: determining a brightness range in which the brightness signal is positioned and determining the duration time of the brightness signal in the brightness range;
s3: when the duration is greater than a preset first threshold, entering a light sensing abnormal state to enable the display module to be in a normally bright state;
s4: accumulating the times of the display screen entering the photosensitive abnormal state to determine the abnormal times;
s5: and when the abnormal times are larger than a preset second threshold value, controlling the display module to display a fault code.
Further, after the step S3, the method for detecting faults of a light-sensing module further includes:
and when the brightness range is changed or a first control instruction is received, exiting the abnormal photosensitive state.
Further, the method for detecting the fault of the light sensing module further comprises the following steps:
and when the brightness range is changed, clearing the abnormal times.
Further, after the step S5, the method for detecting faults of a light-sensing module further includes:
and when a second control instruction is received, controlling the display module to hide the fault code.
In a second aspect, the present invention provides a light sensing module fault detection apparatus, which is applied to a display screen, where the display screen includes a photoelectric conversion module, a light sensing module, and a display module, and the light sensing module fault detection apparatus includes:
the signal receiving unit is used for receiving a brightness signal transmitted by the photoelectric conversion module, and the brightness signal is used for representing the illumination intensity detected by the light sensing module;
the duration determining unit is used for determining a brightness range where the brightness signal is located and determining the duration of the brightness signal in the brightness range;
the state switching unit is used for entering a light sensing abnormal state to enable the display module to be in a normally bright state when the duration time is greater than a preset first threshold value;
the counting unit is used for accumulating the times of the display screen entering the photosensitive abnormal state so as to determine the abnormal times;
and the control unit is used for controlling the display module to display the fault code when the abnormal times is greater than a preset second threshold value.
Further, the state switching unit is further configured to exit the abnormal light sensing state when the brightness range is changed or the first control instruction is received.
Further, the counting unit is further configured to zero the abnormal number when the brightness range is changed.
Further, the control unit is further configured to control the display module to hide the fault code when a second control instruction is received.
In a third aspect, the present invention further provides a display screen, including: the controller is electrically connected with the memory, the controller, the photoelectric conversion module, the display module and the light sensing module;
the light sensing module is used for detecting the illumination intensity;
the photoelectric conversion module is used for converting the illumination intensity into a brightness signal and transmitting the brightness signal to the controller;
the light sensing module fault detection device is installed in the memory and comprises one or more software function modules executed by the controller, and the light sensing module fault detection device comprises:
the signal receiving unit is used for receiving a brightness signal transmitted by the photoelectric conversion module, and the brightness signal is used for representing the illumination intensity detected by the light sensing module;
the duration determining unit is used for determining a brightness range where the brightness signal is located and determining the duration of the brightness signal in the brightness range;
the state switching unit is used for entering a light sensing abnormal state to enable the display module to be in a normally bright state when the duration time is greater than a preset first threshold value;
the counting unit is used for accumulating the times of the display screen entering the photosensitive abnormal state so as to determine the abnormal times;
and the control unit is used for controlling the display module to display the fault code when the abnormal times is greater than a preset second threshold value.
In a fourth aspect, the invention further provides an air conditioner, which comprises the display screen.
Compared with the prior art, the method and the device for detecting the faults of the light sensing module have the following advantages:
receiving a brightness signal transmitted by a photoelectric conversion module, wherein the brightness signal is used for representing the illumination intensity detected by a light sensing module, then determining the brightness range where the brightness signal is located and determining the duration time of the brightness signal in the brightness range, when the duration time is greater than a preset first threshold value, entering a light sensing abnormal state to enable a display module to be in a normally bright state, accumulating the times of entering the light sensing abnormal state of a display screen to determine abnormal times, and finally, when the abnormal times are greater than a preset second threshold value, controlling the display module to display a fault code; by the method, whether the light sensing module breaks down or is abnormal can be found in time, so that a user is reminded to overhaul the light sensing module in time, and normal use of the display screen is prevented from being influenced.
Compared with the prior art, the display screen, the air conditioner and the light sensing module fault detection method and device have the same advantages, and are not repeated herein.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a block diagram of a circuit structure of a display screen according to an embodiment of the present invention.
Fig. 2 is a flowchart of a method for detecting a failure of a light sensing module according to an embodiment of the invention.
Fig. 3 is a functional block diagram of the optical sensing module fault detection apparatus according to the embodiment of the invention.
Icon: 1-a display screen; 2-a controller; 3-a memory; 4-a light sensing module; 5-a photoelectric conversion module; 6-a display module; 7-light sensing module fault detection device; 8-a signal receiving unit; 9-a duration determination unit; 10-a judgment unit; 11-a state switching unit; 12-a counting unit; 13-a control unit.
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. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
First embodiment
The embodiment of the invention provides a display screen 1, which can display information such as data, pictures, videos and the like for a user and can find whether a light sensing module 4 has a fault or is abnormal in time. Fig. 1 is a block diagram of a circuit structure of a display panel 1 according to an embodiment of the present invention. The display screen 1 comprises a memory 3, a controller 2, a photoelectric conversion module 5, a light sensing module 4, a display module 6 and a light sensing module fault detection device 7, wherein the light sensing module fault detection device 7 comprises at least one fault which can be stored in the memory 3 in a software or firmware (firmware) mode.
The memory 3 may be used to store software programs and units, such as program instructions/units corresponding to the failure detection apparatus 7 and method of the light sensing module in the embodiment of the present invention, and the controller 2 executes various functional applications and data processing by operating the software programs and units of the failure detection apparatus 7 and method of the light sensing module stored in the memory 3, such as the failure detection method of the light sensing module provided in the embodiment of the present invention. The Memory 3 may be, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM), a Programmable Read-Only Memory (PROM), an erasable Read-Only Memory (EPROM), an electrically erasable Read-Only Memory (EEPROM), and the like.
The light sensing module 4 is used for detecting the illumination intensity. Specifically, the light sensing module 4 includes optical devices such as a photoelectric tube and a photoresistor.
The photoelectric conversion module 5 is configured to convert the illumination intensity into a luminance signal, and transmit the luminance signal to the controller 2.
It should be noted that, in a preferred embodiment, the light sensing module 4 and the photoelectric conversion module 5 can be integrated into a light intensity detection module, which can be, but not limited to, a light sensor, a photosensitive sensor, etc.
The display module 6 is used for displaying data, pictures, videos and other information required by the user.
It will be appreciated that the configuration shown in fig. 1 is merely illustrative and that the air conditioner 1 may also include more or fewer components than shown in fig. 1, or have a different configuration than shown in fig. 1. The components shown in fig. 1 may be implemented in hardware, software, or a combination thereof.
In addition, the embodiment of the invention also provides an air conditioner, which comprises the display screen 1.
Second embodiment
The embodiment of the invention provides a light sensing module fault detection method which is applied to a display screen 1 and used for detecting whether a light sensing module 4 is abnormal or has a fault. Fig. 2 is a flowchart of a method for detecting a fault of a light sensing module according to an embodiment of the present invention. The light sensing module fault detection method comprises the following steps:
step S201: receives the luminance signal transmitted by the photoelectric conversion module 5.
It is understood that the light sensing module 4 detects the illumination intensity, the photoelectric conversion module 5 converts the illumination intensity into a brightness signal, and the brightness signal is transmitted to the controller 2. Therefore, the luminance signal can be used to characterize the illumination intensity. The luminance signal is an analog signal.
Step S202: determining a luminance range in which the luminance signal is located and determining a duration of the luminance signal within the luminance range.
It should be noted that, when the display screen 1 enters the light sensing automatic function, the brightness of the display module 6 changes with the change of the illumination intensity. In a preferred embodiment, the controller 2 divides the brightness of the display module 6 into four kinds of brightness in advance, and each brightness corresponds to a brightness range. After receiving the luminance signal transmitted by the photoelectric conversion module 5, it is necessary to determine the luminance range in which the luminance signal is located first, and then determine the duration of the luminance signal in the luminance range.
Step S203: judging whether the duration is greater than a preset first threshold, if so, executing step S204; if not, step S201 is re-executed.
When the duration is longer than a preset first threshold, it indicates that the illumination intensity detected by the light sensing module 4 is in a state of no change for a long time, and at this time, the light sensing module 4 may have a fault; and when the duration is less than or equal to the preset first threshold, it indicates that the light sensing module 4 is probably in a normal state.
Step S204: the light sensing abnormal state is entered to make the display module 6 in a normally on state.
When the duration is greater than the preset first threshold, the light sensing module 4 may have a fault, and the detected illumination intensity is likely to be inaccurate, so that the display module 6 enters a light sensing abnormal state, and the light sensing automatic function is turned off, so that the brightness of the display module 6 is no longer changed along with the change of the illumination intensity.
Step S205: the number of times the display panel 1 enters the light-sensing abnormal state is accumulated to determine the number of abnormalities.
The display screen 1 counts once every time it enters a light sensing abnormal state, thereby determining the number of abnormal times.
Note that, the number of abnormal times is cleared when the luminance range is changed. When the brightness range changes, the function of the light sensing module 4 is normal, and therefore the abnormal times are cleared, and the light sensing module 4 is prevented from being judged to be faulty by mistake.
Step S206: judging whether the abnormal times are larger than a preset second threshold value, if so, executing the step S207; if not, step S209 is performed.
By determining whether the abnormal times are greater than the preset second threshold, it can be further determined whether the abnormal condition of the light sensing module 4 is an accidental phenomenon. When the abnormal times are greater than a preset second threshold, the probability of the fault of the light sensing module 4 is higher; on the contrary, the probability of the light sensing module 4 failing is small.
Step S207: the control display module 6 displays the fault code.
And when the abnormal times are greater than a preset second threshold value, controlling the display module 6 to display a fault code so as to remind a user to overhaul the light sensing module 4.
It should be noted that, when the controller 2 receives the second control instruction, the control display module 6 hides the fault code. The second control instruction is generated by the controller 2 in response to the input operation of the user, and is used for turning off the light-sensing automatic function of the display screen 1.
Step S208: judging whether the display screen 1 exits the abnormal photosensitive state, if so, re-executing the step S201; if not, step S209 is performed.
When the number of abnormalities is less than or equal to the preset second threshold, it cannot be determined that the light sensing module 4 has failed. However, when the duration is longer than the preset first threshold, the display screen 1 enters the abnormal light sensing state, and the light sensing module 4 does not continue to detect the light intensity, so if it is necessary to detect whether the light sensing module 4 is in the abnormal state again, it is determined whether the display screen 1 can enter the light sensing module failure detection process again by determining whether the display screen 1 exits the abnormal light sensing state.
Therefore, when the display panel 1 exits the abnormal light sensing state, the display panel 1 reenters the light sensing module fault detection process, and the step S201 is executed again.
Specifically, the method for judging whether the display screen 1 exits the abnormal light sensing state includes:
the first method comprises the following steps: and judging whether the brightness range is changed. When the brightness range changes, it indicates that the function of the light sensing module 4 is normal, so the abnormal restriction on the light sensing module 4 is removed, and the display screen 1 exits the abnormal light sensing state and enters the light sensing automatic function again.
And the second method comprises the following steps: and judging whether a first control instruction is received or not. The first control instruction is generated by the controller 2 in response to an input operation of a user, and is used for restarting the light-sensing automatic function of the display screen 1.
The user can send a first control instruction to the display screen 1 through a remote controller or an intelligent terminal and the like, and after receiving the first control instruction, the display screen 1 exits from the light sensing abnormal state and reenters the light sensing automatic function.
Step S209: keeping the abnormal state of the light sensing.
When the display screen 1 does not exit the abnormal light sensing state, the abnormal light sensing state is kept unchanged.
Third embodiment
Referring to fig. 3, fig. 3 is a functional block diagram of a photo sensor module failure detection apparatus 7 according to a preferred embodiment of the invention. It should be noted that the basic principle and the generated technical effects of the light sensing module fault detection device 7 provided in the present embodiment are the same as those of the above embodiments, and for the sake of brief description, no part of the present embodiment is mentioned, and reference may be made to the corresponding contents in the above embodiments. This light sense module fault detection device 7 includes: signal receiving unit 8, duration determining unit 9, judging unit 10, state switching unit 11, counting unit 12, and control unit 13.
The signal receiving unit 8 is configured to receive the luminance signal transmitted by the photoelectric conversion module 5.
It is to be understood that in a preferred embodiment, the signal receiving unit 8 may be configured to perform step S201.
The duration determination unit 9 is configured to determine a luminance range in which the luminance signal is located and determine a duration of the luminance signal within the luminance range.
It is to be understood that in a preferred embodiment, the duration determination unit 9 is operable to perform step S202.
The judging unit 10 is used for judging whether the duration is greater than a preset first threshold.
It is to be understood that, in a preferred embodiment, the judging unit 10 is operable to execute step S203.
The state switching unit 11 is configured to enter a light sensing abnormal state to make the display module 6 in a normally-on state when the duration is greater than a preset first threshold.
It is to be understood that, in a preferred embodiment, the state switching unit 11 can be used to execute step S204.
The counting unit 12 is used for accumulating the number of times that the display screen 1 enters the light sensing abnormal state to determine the abnormal number of times.
Furthermore, the counting unit 12 is also configured to zero the number of abnormalities when the luminance range changes.
It is to be understood that in a preferred embodiment, the counting unit 12 is operable to perform step S205.
The judging unit 10 is further configured to judge whether the number of abnormality times is greater than a preset second threshold.
It is to be understood that, in a preferred embodiment, the judging unit 10 is operable to execute step S206.
The control unit 13 is configured to control the display module 6 to display the fault code when the abnormal frequency is greater than a preset second threshold; the control unit 13 is further configured to control the display module 6 to hide the fault code when receiving the second control instruction.
It is to be understood that in a preferred embodiment, the control unit 13 is operable to execute step S207.
The judging unit 10 is also used for judging whether the display screen 1 exits the abnormal light sensing state.
It is to be understood that, in a preferred embodiment, the judging unit 10 is operable to execute the step S208.
The state switching unit 11 is used for maintaining the abnormal light sensing state when the display screen 1 does not exit the abnormal light sensing state.
It is to be understood that, in a preferred embodiment, the state switching unit 11 is configured to execute step S209.
In summary, according to the light sensing module fault detection method, the light sensing module fault detection device, the display screen and the air conditioner, the luminance signal is used for representing the illumination intensity detected by the light sensing module by receiving the luminance signal transmitted by the photoelectric conversion module, then the luminance range where the luminance signal is located and the duration time of the luminance signal in the luminance range are determined, when the duration time is greater than a preset first threshold value, the display module is in a normally-on state by entering a light sensing abnormal state, the number of times that the display screen enters the light sensing abnormal state is accumulated to determine the number of times of abnormality, and finally, when the number of times of abnormality is greater than a preset second threshold value, the display module is controlled to display a fault code; by the method, whether the light sensing module breaks down or is abnormal can be found in time, so that a user is reminded to overhaul the light sensing module in time, and normal use of the display screen is prevented from being influenced.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, the functional modules in the embodiments of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The light sensing module fault detection method is applied to a display screen of an air conditioner, the display screen comprises a photoelectric conversion module, a light sensing module and a display module, and the light sensing module fault detection method comprises the following steps:
s1: receiving a brightness signal transmitted by the photoelectric conversion module, wherein the brightness signal is used for representing the illumination intensity detected by the light sensing module;
s2: determining a brightness range in which the brightness signal is positioned and determining the duration time of the brightness signal in the brightness range;
s3: when the duration is greater than a preset first threshold, entering a light sensing abnormal state to enable the display module to be in a normally bright state;
s4: accumulating the times of the display screen entering the photosensitive abnormal state to determine the abnormal times;
s5: and when the abnormal times are larger than a preset second threshold value, controlling the display module to display a fault code.
2. The method for detecting faults of a light sensing module as claimed in claim 1, wherein after the step S3, the method for detecting faults of a light sensing module further comprises:
and when the brightness range is changed or a first control instruction is received, exiting the abnormal photosensitive state.
3. The method as claimed in claim 1, further comprising:
and when the brightness range is changed, clearing the abnormal times.
4. The method for detecting faults of a light sensing module as claimed in claim 1, wherein after the step S5, the method for detecting faults of a light sensing module further comprises:
and when a second control instruction is received, controlling the display module to hide the fault code.
5. The utility model provides a light sense module fault detection device which characterized in that is applied to the display screen of an air conditioner, the display screen includes photoelectric conversion module, light sense module and display module, light sense module fault detection device includes:
the signal receiving unit is used for receiving a brightness signal transmitted by the photoelectric conversion module, and the brightness signal is used for representing the illumination intensity detected by the light sensing module;
the duration determining unit is used for determining a brightness range where the brightness signal is located and determining the duration of the brightness signal in the brightness range;
the state switching unit is used for entering a light sensing abnormal state to enable the display module to be in a normally bright state when the duration time is greater than a preset first threshold value;
the counting unit is used for accumulating the times of the display screen entering the photosensitive abnormal state so as to determine the abnormal times;
and the control unit is used for controlling the display module to display the fault code when the abnormal times is greater than a preset second threshold value.
6. The photo sensing module failure detection device as claimed in claim 5, wherein the state switching unit is further configured to exit the abnormal photo sensing state when the brightness range is changed or the first control command is received.
7. The photo sensing module failure detection device as claimed in claim 5, wherein the counting unit is further configured to clear the abnormal number when the brightness range is changed.
8. The apparatus as claimed in claim 5, wherein the control unit is further configured to control the display module to hide the fault code when receiving a second control command.
9. A display screen is characterized in that the display screen is applied to an air conditioner and comprises: the controller is electrically connected with the memory, the controller, the photoelectric conversion module, the display module and the light sensing module;
the light sensing module is used for detecting the illumination intensity;
the photoelectric conversion module is used for converting the illumination intensity into a brightness signal and transmitting the brightness signal to the controller;
the light sensing module fault detection device is installed in the memory and comprises one or more software function modules executed by the controller, and the light sensing module fault detection device comprises:
the signal receiving unit is used for receiving a brightness signal transmitted by the photoelectric conversion module, and the brightness signal is used for representing the illumination intensity detected by the light sensing module;
the duration determining unit is used for determining a brightness range where the brightness signal is located and determining the duration of the brightness signal in the brightness range;
the state switching unit is used for entering a light sensing abnormal state to enable the display module to be in a normally bright state when the duration time is greater than a preset first threshold value;
the counting unit is used for accumulating the times of the display screen entering the photosensitive abnormal state so as to determine the abnormal times;
and the control unit is used for controlling the display module to display the fault code when the abnormal times is greater than a preset second threshold value.
10. An air conditioner characterized in that it comprises a display screen as claimed in claim 9.
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| CN201810805628.7A CN108922494B (en) | 2018-07-20 | 2018-07-20 | Light sensing module fault detection method and device, display screen and air conditioner |
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| CN112254270B (en) * | 2020-09-02 | 2022-05-31 | 海信（山东）空调有限公司 | Air conditioner and air conditioner fault classification processing method |
| CN112463505B (en) * | 2020-12-14 | 2024-03-12 | 深圳Tcl新技术有限公司 | Pressure testing method and device for display equipment |
| CN115512629A (en) * | 2021-06-07 | 2022-12-23 | 浙江中广电器股份有限公司 | Display screen and brightness control method thereof |
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