CN114373410A - Abnormity detection method, abnormity detection device and display device - Google Patents
Abnormity detection method, abnormity detection device and display device Download PDFInfo
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Abstract
The invention discloses an abnormality detection method, an abnormality detection device and a display device, wherein the abnormality detection method can be applied to the abnormality detection process of a display panel of the display device, the control main board of the display device can directly obtain the abnormal detection signal transmitted by the display panel driving chip, the method can directly determine the abnormal type according to the abnormal detection signal, and avoids the process that in the prior art, when the control mainboard receives the abnormal signal, the register in the drive chip needs to be read again to judge the specific error type.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to an abnormality detection method, an abnormality detection device and a display device.
Background
In the display device, the display driver chip has an abnormality detection function for safety, and the abnormality information is generally notified to the control board through a hardware pin (FAIL _ DET). And if the error type is abnormal, the control main board reads a register in the driving chip again to judge the specific error type. The FAIL _ DET signal can only indicate whether an exception occurs, and a specific exception type can be confirmed by reading an internal register of the driver chip, so that the exception type confirmation process is complicated.
Disclosure of Invention
The invention provides an abnormality detection method, an abnormality detection device and a display device, which are applied to the abnormality detection process of a display panel of the display device, directly acquire an abnormality detection signal transmitted by a drive chip of the display panel through a control main board of the display device, and directly determine the abnormality type according to the abnormality detection signal.
In a first aspect, an embodiment of the present invention provides an anomaly detection method applied in an anomaly detection process of a display panel of a display device;
the display device comprises a control main board, the display panel comprises a driving chip, the driving chip comprises an abnormality detection signal output end, the control main board comprises an abnormality detection signal receiving end, and the abnormality detection signal output end is electrically connected with the abnormality detection signal receiving end; the abnormality detection method includes:
acquiring an abnormality detection signal;
and determining the type of the abnormality according to the abnormality detection signal.
In a second aspect, an embodiment of the present invention further provides an abnormality detection device, disposed in a control main board of a display device, where the abnormality detection device includes:
the abnormality detection signal acquisition module is used for acquiring an abnormality detection signal;
and the abnormality type determining module is used for determining the abnormality type according to the abnormality detection signal.
In a third aspect, an embodiment of the present invention further provides a display device, including a display panel and a control main board, where the display panel includes a driving chip, the driving chip includes an abnormality detection signal output end, the control main board includes an abnormality detection signal receiving end, and the abnormality detection signal output end is electrically connected to the abnormality detection signal receiving end;
the control main board is used for executing the abnormality detection method provided by the first aspect.
According to the anomaly detection method provided by the embodiment of the invention, the control main board can directly acquire the anomaly detection signal transmitted by the drive chip, and can directly determine the anomaly type according to the anomaly detection signal, so that the process that in the prior art, when the control main board receives the anomaly signal, a register in the drive chip needs to be read again to judge the specific error type is avoided.
Drawings
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 2 is a schematic flow chart illustrating an anomaly detection method according to an embodiment of the present invention;
FIG. 3 is a flow chart illustrating another method for detecting an anomaly according to an embodiment of the present invention;
FIG. 4 is a flowchart illustrating another method for detecting an anomaly according to an embodiment of the present invention;
FIG. 5 is a flowchart illustrating another method for detecting an anomaly according to an embodiment of the present invention;
FIG. 6 is a flowchart illustrating another method for detecting an anomaly according to an embodiment of the present invention;
FIG. 7 is a flowchart illustrating another method for detecting an anomaly according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of an abnormality detection device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the prior art, the exception information is generally notified to the control motherboard through a hardware pin (FAIL _ DET). And if the abnormal condition exists, the control mainboard reads the register in the driving chip again to judge the specific error type, wherein the FAIL _ DET signal can only indicate whether the abnormal condition occurs, and the specific abnormal condition type can be confirmed only by reading the register in the driving chip. The detection method has the following problems: the detection efficiency is low; if the communication interfaces of the driving chip and the control mainboard have problems (such as ESD or other interference influences), the control mainboard cannot acquire abnormal error types in time; some client platforms do not support reading and writing of a driver chip register, and great trouble is brought to exception type analysis.
Based on the above technical problems, the inventors further developed a technical solution of the embodiment of the present invention. Specifically, the embodiment of the invention provides an abnormality detection method, which is applied to an abnormality detection process of a display panel of a display device; the display device comprises a control main board, the display panel comprises a driving chip, the driving chip comprises an abnormity detection signal output end, the control main board comprises an abnormity detection signal receiving end, and the abnormity detection signal output end is electrically connected with the abnormity detection signal receiving end; the abnormality detection method includes:
acquiring an abnormality detection signal;
and determining the type of the abnormality according to the abnormality detection signal.
By adopting the technical scheme, the control main board of the display device directly acquires the abnormal detection signal transmitted by the driving chip of the display panel, and the abnormal type can be directly determined according to the abnormal detection signal.
The above is the core idea of the present invention, and the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention; fig. 2 is a flowchart illustrating an anomaly detection method according to an embodiment of the present invention. Referring to fig. 1 and fig. 2, an abnormality detection method according to an embodiment of the present invention is applied to an abnormality detection process of a display panel 200 of a display device 100, where the display device 100 includes a control main board 101, the display panel 200 includes a driving chip 201, the driving chip 201 includes an abnormality detection signal output end 202, the control main board 101 includes an abnormality detection signal receiving end 102, and the abnormality detection signal output end 202 is electrically connected to the abnormality detection signal receiving end 102.
Illustratively, the display panel 200 includes a display area AA for image display; the control main board 101 can receive and process the abnormal detection signal of the display panel 200 obtained by the abnormal detection signal receiving terminal 102. The abnormality detection signal output terminal 202 is electrically connected to the abnormality detection signal receiving terminal 201, and transmits the abnormality detection signal and other signals of the display panel 200. The number of the anomaly detection signal output ends 202 and the number of the anomaly detection signal receiving ends 102 are not particularly limited, and may be set according to actual needs, and the anomaly detection signals transmitted through the plurality of anomaly detection signal output ends 202 and the anomaly detection signal receiving ends 102 may be the same or different, and may be transmitted in a time-sharing manner or in a synchronous manner.
It should be noted that there are various signal connections between the control motherboard 101 and the driving chip 201 for transmitting display signals and control signals, which are not shown here, and those skilled in the art can understand that the present invention is based on the embodiments of the present invention and combines with the prior art.
The anomaly detection method provided by the embodiment of the invention comprises the following steps:
s101, acquiring an abnormal detection signal.
Specifically, as shown in fig. 1 and fig. 2, the abnormality detection method provided in the embodiment of the present invention can be applied to abnormality detection of a display panel of a display device for vehicle-mounted display, a microprocessor inside a control main board 101 of the display device can be used to execute the abnormality detection method provided in the embodiment of the present invention, a driving chip 201 transmits an abnormality detection signal to the control main board 101 through an abnormality detection signal output end 202, and the control main board 101 obtains the abnormality detection signal through an abnormality detection signal receiving end 102. The abnormality detection signal includes at least one of a voltage, a current, a level, and a frequency.
S102, determining the type of the abnormality according to the abnormality detection signal.
Specifically, the control main board 101 determines the abnormal type of the display panel 200 in the display device 100 according to the obtained abnormal detection signal and by combining the stored corresponding relationship between the abnormal detection signal and the abnormal type, and the abnormal type can be displayed by the display panel 200, or the alarm indicator light flashes, or the abnormal alarm sound prompts, so that the user can check the abnormal type.
To sum up, the anomaly detection method provided by the embodiment of the present invention allows the control motherboard to directly obtain the anomaly detection signal transmitted by the driver chip, and to directly determine the anomaly type according to the anomaly detection signal, thereby avoiding a process in the prior art that when the control motherboard receives the anomaly signal, the register inside the driver chip needs to be read again to determine a specific error type.
Next, a specific setting manner of the abnormality detection signal will be described.
First, the abnormality detection signal including the voltage detection signal is taken as an example for explanation.
Alternatively, the abnormality detection signal includes a voltage detection signal, and correspondingly, fig. 3 is a schematic flow chart of another abnormality detection method according to an embodiment of the present invention. Referring to fig. 1 and fig. 3, an abnormality detection method according to an embodiment of the present invention includes:
s201, acquiring a voltage detection signal.
With continued reference to fig. 1 and fig. 3, the control main board 101 receives the voltage detection signal of the display panel 200 through the abnormality detection signal receiving terminal 102, wherein the voltage detection signal includes a voltage value.
S202, determining the abnormal type according to the voltage detection signal, wherein the voltage values of any two abnormal types are different.
Specifically, as shown in fig. 1 and fig. 3, the control main board 101 determines the abnormal type of the display panel 200 in the display device 100 according to the voltage value of the obtained voltage detection signal and the stored corresponding relationship between the voltage detection signal and the abnormal type. The voltage values of any two abnormal types are different, so that each voltage detection signal corresponds to one abnormal type, and the abnormal type can be directly determined according to the obtained voltage detection signal.
Optionally, the anomaly type includes at least one of an abnormal power outage anomaly, an image cyclic redundancy check value mismatch anomaly, a low voltage differential signal shutdown anomaly, and an over-temperature detection anomaly.
For example, the voltage detection signal is 1.0V, and the corresponding abnormal type is abnormal power failure; the voltage detection signal is 1.5V, and the corresponding abnormal type is an image cyclic redundancy check value mismatching abnormality; the voltage detection signal is 2.0V, and the corresponding abnormal type is the closing abnormality of the low-voltage differential signal; the voltage detection signal is 2.5V, the corresponding abnormal type is overheat detection abnormal, and the like, and more voltage detection signals correspond to the abnormal type, which is not listed here.
In summary, by using the anomaly detection method provided by the embodiment of the invention, the voltage anomaly signal corresponds to the anomaly type, the control motherboard can directly obtain the anomaly detection signal transmitted by the driving chip, and can directly determine the anomaly type according to the anomaly detection signal, the anomaly type determination is real-time and accurate, the steps are few, the method is not affected by the interference of the communication interface problem of the driving chip and the control motherboard, and the problem that some client platforms do not support the reading and writing of the driving signal register and bring great trouble to the anomaly type analysis is avoided.
Next, the abnormality detection signal including the voltage detection signal and the frequency detection signal will be described as an example.
Alternatively, the abnormality detection signal includes a voltage detection signal and a frequency detection signal, and correspondingly, fig. 4 is a schematic flow chart of another abnormality detection method according to an embodiment of the present invention. Referring to fig. 1 and 4, another abnormality detection method according to an embodiment of the present invention includes:
s301, acquiring a voltage detection signal and a frequency detection signal.
Referring to fig. 1, the control main board 101 receives a voltage detection signal and a frequency detection signal of the display panel 200 through the anomaly detection signal receiving terminal 102, wherein the voltage detection signal includes a voltage value and the frequency detection signal includes a frequency value.
S302, determining the abnormal type according to the voltage detection signal and the frequency detection signal, wherein the voltage values and/or the frequency values of any two abnormal types are different.
Specifically, as shown in fig. 1 and 4, the control main board 101 determines the abnormal type of the display panel 200 in the display device 100 according to the obtained voltage detection signal and the frequency detection signal and the stored correspondence between the voltage detection signal, the frequency detection signal and the abnormal type, and the voltage detection signal and the frequency detection signal are combined to correspond to the abnormal type, so as to increase the number of abnormal type detections and the accuracy of the abnormal detection data and the abnormal type. The voltage values of any two abnormal types are different, or the frequency values of any two abnormal types are different, or both the voltage values and the frequency values of any two abnormal types are different, so that the detection signal set composed of each voltage detection signal and each frequency detection signal respectively corresponds to one abnormal type.
For example, the voltage detection signal is 1.0V, the frequency detection signal is 40Hz, and the corresponding abnormal type is abnormal power failure; the voltage detection signal is 1.5V, the frequency detection signal is 40Hz, and the corresponding abnormal type is the image cyclic redundancy check value mismatching abnormality;
or the voltage detection signal is 1.0V, the frequency detection signal is 60Hz, and the corresponding abnormal type is abnormal power failure abnormality; the voltage detection signal is 1.0V, the frequency detection signal is 40Hz, and the corresponding abnormal type is the image cyclic redundancy check value mismatching abnormality;
or the voltage detection signal is 1.0V, the frequency detection signal is 40Hz, and the corresponding abnormal type is abnormal power failure abnormality; the voltage detection signal is 1.5V, the frequency detection signal is 60Hz, and the corresponding abnormal type is the image cyclic redundancy check value mismatching abnormality. The correspondence between the voltage detection signal and the frequency detection signal and the abnormality type is not listed.
In summary, the anomaly detection signal includes the voltage detection signal, and different anomaly types are represented by different voltage detection signals, so that the anomaly detection is timely and accurate. Or the abnormality detection signal comprises a composite signal of the voltage detection signal and the frequency detection signal, and different abnormality types are represented through different characteristics of the voltage detection signal and/or the frequency detection signal, so that the abnormality detection is timely and accurate; moreover, more abnormal types can be represented through different abnormal types represented by the voltage detection signal and/or the frequency detection signal, so that the abnormal detection range is widened, and the accuracy of abnormal detection is improved.
The above embodiments are described only with respect to detecting one type of abnormality, and how to deal with two or more types of abnormality occurring at the same time will be described below.
Optionally, the abnormality detection signal includes a first abnormality detection signal and a second abnormality detection signal, and the first abnormality detection signal and the second abnormality detection signal are different from each other, and correspondingly, fig. 5 is a schematic flow chart of another abnormality detection method according to an embodiment of the present invention. Referring to fig. 1 and 5, another abnormality detection method according to an embodiment of the present invention includes:
s401, a first abnormality detection signal and a second abnormality detection signal are sequentially acquired.
Specifically, referring to fig. 1 and 5, the driving chip 201 transmits the first abnormality detection signal and the second abnormality detection signal to the control main board 101 through the abnormality detection signal output end 202, and the control main board 101 sequentially obtains the first abnormality detection signal and the second abnormality detection signal through the abnormality detection signal receiving end 102. For example, the first abnormality detection signal is a voltage signal of 1.0V, and the second abnormality detection signal is a voltage signal of 2.0V.
S402, confirming a first abnormal type according to the first abnormal detection signal, and confirming a second abnormal type according to the second abnormal detection signal, wherein the first abnormal type is different from the second abnormal type.
Specifically, as shown in fig. 1 and fig. 5, the control main board 101 determines, according to the obtained first abnormality detection signal, the abnormality type of the display panel in the display device 100 to be an abnormal power outage abnormality in combination with the stored correspondence between the abnormality detection signal and the abnormality type; and determining the abnormality type of the display panel in the display device 100 as an image cyclic redundancy check value mismatch abnormality according to the obtained second abnormality detection signal and by combining the stored correspondence between the abnormality detection signal and the abnormality type. And when the number of the abnormal detection signals exceeds two, the control main board sequentially acquires the abnormal detection signals and sequentially determines the abnormal type according to the abnormal detection signals.
Based on the above embodiments, fig. 6 is a schematic flowchart of another abnormality detection method according to an embodiment of the present invention. Referring to fig. 1 and fig. 6, another abnormality detection method according to an embodiment of the present invention includes:
s501, establishing a corresponding relation between the abnormal detection signal and the abnormal type.
Specifically, the abnormal detection signal output end of the driving chip outputs a voltage signal, the voltage signal amplitude of the abnormal detection signal output end is directly measured by using an oscilloscope or a universal meter, the abnormal type of the display panel corresponding to the voltage signal amplitude is established, the corresponding relation between the abnormal detection signal and the abnormal type is determined, after the voltage signal amplitude and the abnormal type are confirmed for many times, a database of the corresponding relation between the abnormal detection signal and the abnormal type is established, and the database is subjected to program coding and stored in a microprocessor of the control mainboard so as to control the mainboard to call programs.
S502, acquiring an abnormal detection signal.
S503, confirming the abnormal type according to the corresponding relation between the abnormal detection signal and the abnormal type and the abnormal detection signal.
Specifically, as shown in fig. 1 and fig. 6, the control main board 101 calls the correspondence between the stored abnormality detection signal and the abnormality type, compares the magnitude of the obtained abnormality detection signal with the magnitude of the stored abnormality detection signal, and determines that the abnormality type of the obtained abnormality detection signal is the same as the abnormality type corresponding to the stored abnormality detection signal when the magnitude difference between the obtained abnormality detection signal and the stored abnormality detection signal is within the preset difference range.
Step S504, updating the corresponding relationship between the abnormal detection signal and the abnormal type.
Specifically, as shown in fig. 1 and fig. 6, after the display device 100 is used for a period of time, the abnormality detection signal and the abnormality type may change, the abnormality detection signal output by the abnormality detection signal output terminal 102 of the driving chip 201 may be collected at regular time, the corresponding abnormality type of the abnormality detection signal may be determined, the correspondence between the abnormality detection signal and the abnormality type stored in the control main board 101 may be updated, and the accuracy of detecting the abnormality type may be ensured.
Based on the above embodiments, fig. 7 is a flowchart illustrating another abnormality detection method according to an embodiment of the present invention. Referring to fig. 1 and 7, another abnormality detection method according to an embodiment of the present invention includes:
s601, acquiring an abnormal detection signal.
S602, determining the type of the abnormality according to the abnormality detection signal.
And S603, controlling the drive chip to restart.
Specifically, when the control main board determines the abnormal type of the display panel, the driving chip of the display panel can be controlled to restart according to a preset restart program, so as to eliminate the abnormality of the display panel.
Based on the same inventive concept, the embodiment of the present invention further provides an abnormality detection device, which is disposed in a control main board of a display device and is configured to execute the abnormality detection method provided by the above embodiment. Fig. 8 is a schematic structural diagram of an abnormality detection device according to an embodiment of the present invention. As shown in fig. 7, the abnormality detection apparatus 10 includes:
an abnormality detection signal obtaining module 11 is configured to obtain an abnormality detection signal.
And an anomaly type determining module 12, configured to determine an anomaly type according to the anomaly detection signal.
By adopting the anomaly detection device provided by the embodiment of the invention, the anomaly detection method provided by the embodiment can be executed, the control mainboard can directly acquire the anomaly detection signal transmitted by the driving chip, and can directly determine the anomaly type according to the anomaly detection signal, so that the process that in the prior art, when the control mainboard receives the anomaly signal, the register in the driving chip needs to be read again to judge the specific error type is avoided.
The abnormality detection device also has the beneficial effects of the abnormality detection method in the above embodiment, and the same points can be understood by referring to the explanation of the abnormality detection method above, and the details are not repeated below.
Based on the same inventive concept, the embodiment of the invention also provides a display device. Continuing to refer to fig. 1, the display device 100 includes a display panel 200 and a control main board 101, the display panel 200 includes a driving chip 201, the driving chip 201 includes an abnormality detection signal output end 202, the control main board 101 includes an abnormality detection signal receiving end 102, the abnormality detection signal output end 102 is electrically connected to the abnormality detection signal output end 202, and the control main board 101 is configured to execute the abnormality detection method provided in the foregoing embodiment. The display device 100 provided by the embodiment of the present invention may be a display screen of a vehicle-mounted display control motherboard, and may also be any electronic product with a display function, including but not limited to the following categories: the touch screen display system comprises a television, a notebook computer, a desktop display, a tablet computer, a digital camera, an intelligent bracelet, intelligent glasses, a vehicle-mounted display, industrial control equipment, a medical display screen, a touch interaction terminal and the like, and the embodiment of the invention is not particularly limited in this respect. The display device also has the beneficial effects of the abnormality detection method in the above embodiment, and the same points can be understood by referring to the explanation of the abnormality detection method above, and the details are not repeated below.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. An abnormality detection method is applied to the abnormality detection process of a display panel of a display device;
the display device comprises a control main board, the display panel comprises a driving chip, the driving chip comprises an abnormality detection signal output end, the control main board comprises an abnormality detection signal receiving end, and the abnormality detection signal output end is electrically connected with the abnormality detection signal receiving end; the method for detecting the abnormality is characterized by comprising the following steps:
acquiring an abnormality detection signal;
and determining the type of the abnormality according to the abnormality detection signal.
2. The abnormality detection method according to claim 1, wherein said abnormality detection signal includes a voltage detection signal;
determining an abnormality type according to the abnormality detection signal, including:
and determining the abnormal types according to the voltage detection signals, wherein the voltage values of any two abnormal types are different.
3. The abnormality detection method according to claim 1, wherein said abnormality detection signal includes a voltage detection signal and a frequency detection signal;
determining an abnormality type according to the abnormality detection signal, including:
and determining the abnormal type according to the voltage detection signal and the frequency detection signal, wherein the voltage values and/or the frequency values of any two abnormal types are different.
4. The abnormality detection method according to claim 1, wherein said abnormality detection signal includes a first abnormality detection signal and a second abnormality detection signal, said first abnormality detection signal and said second abnormality detection signal being different;
acquiring an abnormality detection signal, comprising:
sequentially acquiring the first abnormality detection signal and the second abnormality detection signal;
determining an abnormality type according to the abnormality detection signal, including:
and confirming a first exception type according to the first exception detection signal, and confirming a second exception type according to the second exception detection signal, wherein the first exception type is different from the second exception type.
5. The method of claim 1, further comprising, before determining the type of abnormality based on the abnormality detection signal:
establishing a corresponding relation between the abnormality detection signal and the abnormality type;
determining an abnormality type according to the abnormality detection signal, including:
and confirming the abnormal type according to the corresponding relation between the abnormal detection signal and the abnormal type and the abnormal detection signal.
6. The method of claim 5, further comprising, after determining the type of the abnormality based on the abnormality detection signal:
and updating the corresponding relation between the abnormal detection signal and the abnormal type.
7. The method of claim 1, further comprising, after determining the type of the abnormality based on the abnormality detection signal:
and controlling the drive chip to restart.
8. The abnormality detection method according to claim 1, wherein said abnormality type includes at least one of an abnormal power-off abnormality, an image cyclic redundancy check value mismatch abnormality, a low-voltage differential signal shutdown abnormality, and an overheat detection abnormality.
9. An abnormality detection device provided in a control main board of a display device, comprising:
the abnormality detection signal acquisition module is used for acquiring an abnormality detection signal;
and the abnormality type determining module is used for determining the abnormality type according to the abnormality detection signal.
10. A display device is characterized by comprising a display panel and a control main board, wherein the display panel comprises a driving chip, the driving chip comprises an abnormity detection signal output end, the control main board comprises an abnormity detection signal receiving end, and the abnormity detection signal output end is electrically connected with the abnormity detection signal receiving end;
the control main board is used for executing the abnormality detection method according to any one of claims 1 to 8.
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