WO2021114646A1 - 显示模组、显示屏及显示屏电源备份方法 - Google Patents

显示模组、显示屏及显示屏电源备份方法 Download PDF

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Publication number
WO2021114646A1
WO2021114646A1 PCT/CN2020/100384 CN2020100384W WO2021114646A1 WO 2021114646 A1 WO2021114646 A1 WO 2021114646A1 CN 2020100384 W CN2020100384 W CN 2020100384W WO 2021114646 A1 WO2021114646 A1 WO 2021114646A1
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Prior art keywords
power
power supply
module
display unit
output
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PCT/CN2020/100384
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English (en)
French (fr)
Inventor
雷松
鲁胜奇
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深圳市洲明科技股份有限公司
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Publication of WO2021114646A1 publication Critical patent/WO2021114646A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/2015—Redundant power supplies
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/30—Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/30—Monitoring
    • G06F11/3058—Monitoring arrangements for monitoring environmental properties or parameters of the computing system or of the computing system component, e.g. monitoring of power, currents, temperature, humidity, position, vibrations
    • G06F11/3062—Monitoring arrangements for monitoring environmental properties or parameters of the computing system or of the computing system component, e.g. monitoring of power, currents, temperature, humidity, position, vibrations where the monitored property is the power consumption

Definitions

  • the present disclosure relates to the technical field of display screens, in particular to a display module, a display screen, and a display power backup method.
  • the power supply stops supplying power to the corresponding display area due to a fault.
  • the display area corresponding to the faulty power supply is in a non-display state, causing the display screen to appear black for a period of time.
  • the display will still show a short black screen visible to the naked eye, and the use of a processing chip with a shorter response time will increase the display. The manufacturing cost.
  • a display power backup method includes: obtaining output state parameters of a power supply module; detecting whether the output state parameters match preset state parameters; when the output state parameters do not match the preset state parameters, The power supply module sends an interrupt signal to stop the power supply module from outputting power to the corresponding display unit; sends a power adjustment signal to the display unit corresponding to the power supply module to enable the input required by the display unit corresponding to the power supply module The power is reduced to the preset input power; where the display screen has multiple power modules, two adjacent power modules are cascaded, and the adjacent normal power modules provide presets for the corresponding display units through the failed power modules input power.
  • the obtaining the output state parameter of the power supply module includes: obtaining the output power of the power supply module.
  • the detecting whether the output state parameter matches the preset state parameter includes: detecting whether the output power is greater than or equal to the preset power.
  • the method further includes: when the output power is greater than or equal to the preset power, sending a normal operation signal to the power module.
  • sending an interrupt signal to the power supply module so that the power supply module stops outputting power to the corresponding display unit includes: When the output power is less than the preset power, an interrupt signal is sent to the power supply module to interrupt the output power of the power supply module for the corresponding display unit module.
  • the sending a power adjustment signal to the display unit corresponding to the power module includes: obtaining a preset brightness parameter of the display screen; obtaining a power adjustment signal according to the preset brightness parameter, and combining the power The adjustment signal is sent to the display unit corresponding to the power module.
  • the preset brightness parameter is 1/20 to 1/5 of the brightness parameter during normal display of the display unit.
  • the model of each power supply module is the same, the rated output power of each power supply module is equal to the corresponding input power when the display unit is normally displayed, and the rated power of the power supply module reaches the maximum output power The excess power in between provides preset input power for the display unit corresponding to the failed power module.
  • the number of display units of the display screen is N
  • the maximum value of the preset input power is the difference between the maximum output power of the power supply module and the rated power
  • the preset input power The minimum value of is 1/(N-1) of the difference between the maximum output power of the power supply module and the rated power, and the preset input power is adjusted correspondingly according to the number of display units in the display screen.
  • the physical output signal of the power module is converted into a specific numerical parameter, so as to obtain the output state parameter of the power module.
  • the preset brightness parameter is positively correlated with the preset input power
  • the power adjustment signal is used to control the input power of the display unit corresponding to the failed power supply module
  • the preset input power is the minimum brightness of the display unit is the corresponding input power, so that when the preset input power is used as the operating power of the display unit corresponding to the failed power module, the display unit corresponding to the failed power module is displayed The brightness is maintained at a relatively low brightness for display.
  • the preset brightness parameter is 1/10 of the brightness parameter when the display unit is in normal display
  • the preset input power corresponding to the preset brightness parameter is determined according to the rated output power and the maximum output power of the power supply module;
  • the rated output power of the power supply module is used to supply power to the respective corresponding display units, and the part of the power supply module exceeding the rated output power is used to supply power to the display unit corresponding to the failed power supply module; wherein, the preset brightness parameter corresponds to The preset input power is based on the difference between the maximum output power of the power supply module and the rated output power: when the number of display units of the display screen is N, the preset input power is the maximum output power of the power supply module 1/(N-1) of the difference between output power and rated output power;
  • the rated output power and the maximum output power of the power module are adjusted, and the brightness corresponding to the preset input power is adjusted accordingly.
  • the specific derivation formula is as follows:
  • P 0 is the rated output power of the power module
  • P max is the maximum output power of the power module
  • N is the total number of display units on the display screen
  • A is the preset brightness parameter and the brightness of the display unit during normal display The ratio of the parameters.
  • a display module includes: a plurality of display units, a plurality of power modules, and a corresponding system card; the output end of each power module is connected to a display unit and supplies power to the display unit; A detection end of the system card is connected to a power supply module, the first output end of the system card is connected to the display unit corresponding to the power supply module; two adjacent power supply modules are cascaded , And the currents between two adjacent power supply modules are equal, so that when a power supply module fails, the adjacent normal power supply module provides preset input power to the corresponding display unit through the failed power supply module; the system card uses To obtain the output state parameters of the power module; the system card is also used to detect whether the output state parameters match the preset state parameters; the system card is also used to detect whether the output state parameters match the preset state parameters When there is a mismatch, an interrupt signal is sent to the power supply module to stop the power supply module from outputting power to the corresponding display unit; the system card is also used to send a power adjustment signal to the display unit
  • the power module has an output detection terminal, the output detection terminal of the power module is connected to the corresponding detection terminal of the system card, and the output detection terminal of the power module is used to transmit the The card sends the output status of the power module.
  • the power module has an output control terminal, the output control terminal of the power module is connected to the corresponding second output terminal of the system card, and the output control terminal of the power module is used to control the Describe the output status of the power supply module.
  • a display screen comprising: a screen body and the display module as described in any of the above embodiments, the display module is connected to the screen body, the light-emitting surface of the display unit faces away from the screen body, and The power supply module and the system card are arranged on a side of the display unit close to the screen body.
  • the display and display power backup method by obtaining the output state parameters of the power module, it is convenient to know whether the current power module is faulty. After a fault occurs, only the output of the faulty power module is stopped, and the adjacent power supply Supply power to the display unit corresponding to the faulty power supply module, and send a power adjustment signal to the display unit corresponding to the faulty power supply module, so that the input required by the display unit is reduced to the preset input power, so that the adjacent power supply modules are guaranteed to correspond to themselves
  • the display unit corresponding to the faulty power module is ensured to continue to display, avoiding the situation that the display unit corresponding to the faulty power module is not displayed, thereby effectively reducing the probability of black screen of the display unit.
  • Fig. 1 is a flowchart of a display power backup method according to an embodiment
  • FIG. 2 is a schematic structural diagram of a display module according to an embodiment.
  • the display power backup method includes: obtaining the output state parameters of the power module; detecting whether the output state parameters match the preset state parameters; when the output state parameters match the preset state When the parameters do not match, send an interrupt signal to the power supply module to stop the power supply module from outputting power to the corresponding display unit; send a power adjustment signal to the display unit corresponding to the power supply module so that the power supply module corresponds to the The input power required by the display unit is reduced to a preset input power; wherein the display screen has multiple power modules, two adjacent power modules are cascaded, and the adjacent normal power modules pass through the failed power module as The corresponding display unit provides preset input power.
  • the output state parameters of the power supply module are obtained to facilitate knowing whether the current power supply module is faulty. After a fault occurs, only the output of the faulty power supply module is stopped, and the adjacent power supply is the display unit corresponding to the faulty power supply module. Power supply, and by sending a power adjustment signal to the display unit corresponding to the failed power supply module, the input required by the display unit is reduced to the preset input power, so that the adjacent power supply module can ensure the normal power supply of its corresponding display unit , To ensure the continuous display of the display unit corresponding to the failed power supply module, avoid the situation that the display unit corresponding to the failed power supply module does not display, and reduce the probability of the display unit's black screen.
  • FIG. 1 is a flowchart of a display power backup method according to an embodiment of the present disclosure.
  • a display power backup method includes some or all of the following steps.
  • the display screen includes a plurality of display units, and the plurality of display units are arranged in an array to form a complete display screen.
  • each of the display units is correspondingly connected to a power supply module.
  • the power supply module supplies power to the display unit to maintain the normal display of the screen of the display screen and ensure the normal light emission of each display unit.
  • the output of the power supply module provides a guarantee for the normal display of the display unit.
  • the output state of the power supply module affects the normal display of the display unit, that is, when the output state of the power supply module is normal, the display unit displays normally, and when the output state of the power supply module fails, it indicates that the The power module is in an abnormal state, and the display unit will no longer display at this time.
  • the output quantity is digitally processed, that is, the physical output signal of the power supply module is converted into specific numerical parameters.
  • the analog output signal of the output current of the power supply module is converted into the average value of the current amplitude.
  • the analog output signal of the output voltage of the power module is converted into the average value of the voltage amplitude.
  • the output current signal and the output voltage signal of the power module are converted into an average value of power.
  • an A/D (Analog/Digital) converter or a DSP (digital signal processor) can be used, so that the output state of the power supply module is detected, so as to facilitate subsequent inspections of the power supply module. Whether the output status of the power module is normal or abnormal is judged accurately.
  • the output state parameter directly reflects the current operating state of the power supply module. That is, the current output state of the power supply module is related to the output state parameter.
  • the preset parameter is the output state parameter corresponding to the power module in the normal operation state. Detecting whether the output state parameters match the preset state parameters is to compare the current output state of the power supply module with the output state during normal operation, that is, the power supply module corresponds to the normal operation state
  • the output state parameter is a standard, and the current operating state of the power supply module is compared. In this way, the current operating state of the power module is compared with its normal operating state, that is, the parameter corresponding to the real-time operating state of the power module is compared with a fixed value parameter.
  • the comparison results of the two parameters are divided into two types. One result indicates that the power module is in a normal operating state, and the other result indicates that the power module is in an abnormal operating state. According to the comparison result of the above two parameters, it is convenient to determine the current operating state of the power supply module, thereby facilitating subsequent corresponding operations on different operating states of the power supply module.
  • the output state parameter does not match the preset state parameter, indicating that the current operating state of the power supply module does not match its normal operating state, that is, it indicates that the current output state of the power supply module does not match its normal operating state.
  • the corresponding output state does not match in the normal operation state, which means that the parameter corresponding to the current output state of the power module is different from the parameter corresponding to the output state in the normal operation state.
  • the output of the power module The state is an abnormal state, that is, the current output state of the power supply module is a fault state, for example, the output power of the power supply module is less than its output power during normal operation. In this way, the output of the power supply module is in an unstable state.
  • the failed power supply module In order to reduce the impact on the display stability of the display unit, for the failed power supply module, an interrupt signal is sent to it, so that the failed power supply module stops to the corresponding Display unit output power. However, the faulty power supply module is still connected to the corresponding display unit at this time, so that the adjacent power supply module that is operating normally can supply power to the display unit through the faulty power supply module. At this time, the faulty power supply module acts as a conduction corresponding to the corresponding display unit and The channel adjacent to the power supply module.
  • the faulty power supply module at this time is equivalent to a wire, so that the adjacent normally operating power supply module is electrically connected to the display unit corresponding to the faulty power supply module, so that the subsequent adjacent normally operating power supply module corresponds to the faulty power supply module.
  • the display unit provides the required input power, so that the adjacent power supply ensures that the display unit corresponding to the faulty power supply continues to display while ensuring the normal power supply of its corresponding display unit, avoiding the situation that the display unit corresponding to the faulty power supply does not display , Which reduces the chance of a black screen.
  • S400 Send a power adjustment signal to the display unit corresponding to the power module to reduce the input power required by the display unit corresponding to the power module to a preset input power; wherein the display screen has multiple power modules adjacent to each other.
  • the two power modules are cascaded, and adjacent normal power modules provide preset input power to the corresponding display unit through the failed power module.
  • the display unit is provided with a power adjustment unit for adjusting the required input power.
  • the power adjustment unit adjusts the input power of the failed power module corresponding to the display unit,
  • the faulty power supply module corresponding to the display unit is in an operating state with a relatively low input power, so that the brightness of the screen displayed by the faulty power supply module corresponding to the display unit is at a relatively low brightness.
  • the preset input power is set in advance by an internal program of the system card in the display screen. The preset input power is set according to the number of display units in the display screen and the maximum output power of the power supply module.
  • the preset input power ensures a relatively low input power of the display unit corresponding to the faulty power supply module, and this input power can also ensure that the screen displayed by the display unit can be received by human eyes, that is, the power supply module corresponding to the faulty
  • the display brightness of the display unit is at a relatively low brightness. Since the multiple power modules are connected in cascade mode, the feature of power cascade connection is that the currents between adjacent power supplies remain equal at all times. In normal operation, that is, when there are no faulty power modules, the output power of each power module is equal, and the current between adjacent power modules is also equal. When a faulty power module occurs, the faulty power module no longer outputs, so that the current between the faulty power module and the adjacent power module that is operating normally changes.
  • a power adjustment signal is sent to the display unit corresponding to the power module, so that the adjacent normally operating power module is the output power of the display unit corresponding to the failed power module,
  • the power modules are still connected in cascade mode, and at the same time, the preset input power is provided for the display unit corresponding to the faulty power module, which ensures that the display unit corresponding to the faulty power module uses the preset input power when a fault occurs.
  • the preset input power is related to the rated output power and the maximum output power of the power supply module. Since each power supply module has the same model, the rated output power of the power supply module is equal to the corresponding input power when the display unit normally displays. The excess power between the rated power and the maximum output power of the power supply module provides preset input power for the display unit corresponding to the failed power supply module.
  • the number of display units of the display screen is N.
  • the maximum value of the preset input power is the difference between the maximum output power of the power module and the rated power.
  • the minimum value of the preset input power is 1/(N-1) of the difference between the maximum output power of the power supply module and the rated power, and the magnitude of the preset input power is adjusted correspondingly according to the number of display screens.
  • the obtaining the output state parameter of the power supply module includes: obtaining the output power of the power supply module.
  • the display screen is composed of multiple display units, and the multiple display units are arranged in an array to form a complete display screen.
  • each of the display units is correspondingly connected to a power supply module, and the power supply module supplies power to the display unit to maintain the normal display of the screen of the display screen and ensure the normal light emission of each display unit.
  • the output of the power module provides a guarantee for the normal display of the display unit, and the output state of the power module affects the normal display of the display unit. That is, when the output state of the power module is normal, the display unit displays normally.
  • the output quantity is digitally processed, that is, the physical output signal of the power supply module is converted into specific numerical parameters. For example, the output current signal and the output voltage signal of the power module are converted into an average power value.
  • the above-mentioned digital processing process can be implemented by various devices that convert analog signals into digital signals. For example, an analog-to-digital converter or a digital signal processor.
  • the output state of the power supply module is converted to the corresponding power value, it is convenient to make an intuitive comparison according to the magnitude of the value, that is, the current output state of the power supply module is embodied in digital form, thereby facilitating comparison of the power supply module
  • the output state is a normal state or an abnormal state for accurate judgment.
  • the detecting whether the output state parameter matches the preset state parameter includes: detecting whether the output power is greater than or equal to the preset power.
  • the preset power is the output power corresponding to the power supply module in a normal operating state
  • the magnitude of the output power directly reflects the current operating state of the power supply module. That is, the magnitude of the output power directly reflects whether the operating state of the power module is in a fault state or a normal state, that is, the magnitude of the output power directly reflects whether the operating state of the power module is normal.
  • Detecting whether the output power is greater than or equal to the preset power is to compare the current output power of the power supply module with the output power during normal operation, that is, to compare the output power corresponding to the power supply module in the normal operation state
  • the power is the standard, and the current output power of the power supply module is compared.
  • the current output power of the power supply module is compared with the output power corresponding to the normal operation state, that is, the output power corresponding to the real-time operation state of the power supply module is compared with a fixed value power.
  • the comparison results of the above two powers are divided into two types. One of the results is that the output power is greater than or equal to the preset power, indicating that the power supply module is in a normal operating state.
  • Another result is that the output power is less than the preset power, which indicates that the power module is in an abnormal operating state. According to the comparison result of the above two powers, it is convenient to determine the current operating state of the power supply module, thereby facilitating subsequent corresponding operations on different operating states of the power supply module.
  • sending an interrupt signal to the power supply module so that the power supply module stops outputting power to the corresponding display unit includes:
  • an interrupt signal is sent to the power supply module to interrupt the output power of the power supply module for the corresponding display unit module.
  • the output power is less than the preset power, indicating that the current output power of the power supply module is less than the output power corresponding to its normal operating state. That is, it indicates that the current output power of the power supply module is lower than its corresponding output power under normal operation. That is to say, it indicates that the current output power of the power supply module is lower than the normal value.
  • the output state of the power supply module is an abnormal state, that is, the current output state of the power supply module is a fault state. In this way, the output of the power supply module is in an unstable state.
  • an interrupt signal is sent to it, so that the failed power supply module stops to the corresponding Display unit output power. That is, the power of the failed power module is no longer input to the corresponding display unit.
  • the failed power supply module is still connected to the corresponding display unit, so that the adjacent normally operating power supply module can supply power to the display unit through the failed power supply module.
  • the faulty power supply module serves as a channel that connects the corresponding display unit with the adjacent power supply module. It can also be considered that the faulty power supply module at this time is equivalent to a wire.
  • the faulty power supply module electrically connects the adjacent normally operating power supply module with the display unit corresponding to the faulty power supply module, so that the adjacent normally operating power supply module can provide the required input power for the display unit corresponding to the faulty power supply module.
  • the adjacent power supply ensures that the display unit corresponding to the faulty power supply is continuously displayed while ensuring the normal power supply of the display unit corresponding to the adjacent power supply, avoids the situation that the display unit corresponding to the faulty power supply does not display, and reduces the probability of black screen.
  • the method further includes: when the output power is greater than or equal to the preset power, sending a normal operation signal to the power module.
  • the output power is greater than or equal to the preset power, indicating that the current operating state of the power supply module is a normal operating state.
  • the power supply module only needs to maintain the previous output power, that is, keep the output power of the power supply module unchanged, so that the power supply module continues to output normally, so as to ensure that the display unit corresponding to the power supply module is normal. display.
  • the sending a power adjustment signal to the display unit corresponding to the power module includes: obtaining a preset brightness parameter of the display screen; obtaining a power adjustment signal according to the preset brightness parameter, and combining the power
  • the adjustment signal is sent to the display unit corresponding to the power module.
  • the brightness of the display unit is related to its input power, so that the preset brightness parameter corresponds to the preset input power. That is, the preset brightness parameter is positively correlated with the preset input power, that is, when the preset brightness parameter is decreased, the preset input power is correspondingly decreased.
  • the power adjustment signal is used to control the input power of the display unit corresponding to the failed power supply module, and the power adjustment signal is obtained according to the preset brightness parameter.
  • the preset brightness parameter is correspondingly set according to the preset input power, and since the preset input power is the lowest brightness of the display unit is the corresponding input power, the preset input power is used as the faulty power supply module
  • the display brightness of the display unit corresponding to the failed power supply module is maintained at a relatively low brightness. This relatively low brightness ensures the display of the display unit, avoids the situation that the display unit does not display, and reduces the probability of a black screen of the display unit.
  • the preset brightness parameter is 1/20 to 1/5 of the brightness parameter during normal display of the display unit.
  • the preset brightness parameter of the display unit in order not to affect the normal power supply module to output power for the corresponding display unit, is set to be smaller than the brightness parameter during normal display.
  • the preset brightness parameter is much smaller than the brightness parameter during normal display, so that when the power module fails, the brightness of the corresponding display unit is displayed at a very low brightness.
  • the brightness corresponding to the preset brightness parameter is still within the range that can be distinguished by human eyes, which avoids the situation that the picture displayed by the display unit is mistaken for not being displayed.
  • the preset brightness parameter is 1/10 of the brightness parameter during normal display of the display unit.
  • the preset input power corresponding to the preset brightness parameter is determined according to the rated output power and the maximum output power of the power supply module.
  • the rated output power of the power supply module is used to supply power to the respective corresponding display units.
  • the part of the power supply module that exceeds the rated output power is used to supply power to the display unit corresponding to the failed power supply module.
  • the preset input power corresponding to the preset brightness parameter is based on the difference between the maximum output power of the power module and the rated output power as a reference. For example, when the number of display units of the display screen is N, the preset input power is 1/(N-1) of the difference between the maximum output power of the power supply module and the rated output power. According to the above ratio, the rated output power and the maximum output power of the power module are adjusted, and the brightness corresponding to the preset input power is adjusted accordingly.
  • the specific derivation formula is as follows:
  • P 0 is the rated output power of the power module
  • P max is the maximum output power of the power module
  • N is the total number of display units on the display screen
  • A is the preset brightness parameter and the brightness of the display unit during normal display The ratio of the parameters.
  • the preset input power is 1/10 of the rated output power of the power supply module, so that the maximum output of the power supply module is The ratio of power to rated output power is 10: N+9.
  • the ratio of the preset brightness parameter to the brightness parameter of the display unit during normal display is adjusted accordingly, so as to realize the corresponding adjustment of the preset input power
  • the corresponding brightness ensures the normal operation of the normal power module.
  • a display module is implemented using the display power backup method described in any of the above embodiments.
  • the display module has functional modules corresponding to the steps of the display power backup method.
  • a display module 10 is provided, including: a plurality of display units 100, a plurality of power modules 200, and a system card 300 corresponding thereto.
  • the output terminal of each power module 200 is connected to a display unit 100 to supply power to the display unit 100, and the detection terminal of each system card 300 is connected to a power module 200.
  • the first output terminal of the system card 300 is connected to the display unit 100 corresponding to the power module 200.
  • Two adjacent power supply modules 200 are cascaded, and the currents between two adjacent power supply modules 200 are equal, so that when the power supply module 200 fails, the adjacent normal power supply module 200 passes through the failed power supply module.
  • the system card 300 is used to obtain output state parameters of the power module 200.
  • the system card 300 is also used to detect whether the output state parameters match the preset state parameters.
  • the system card 300 is also used to send an interrupt signal to the power supply module 200 when the output state parameters do not match the preset state parameters, so that the power supply module 200 stops outputting power to the corresponding display unit 100 .
  • the system card 300 is also used to send a power adjustment signal to the display unit 100 corresponding to the power module 200 to reduce the input power required by the display unit 100 corresponding to the power module 200 to a preset input power.
  • the system card 300 obtains the output state parameters of the power module 200, so that it is convenient to know whether the current power module 200 is faulty. After a failure, the system card 300 sends an interrupt signal to the failed power supply module, only stopping the output of the failed power supply module, but still maintains electrical connection with the display unit 100, and supplies power to the display unit 100 corresponding to the failed power supply module through the adjacent power supply. . The system card 300 sends a power adjustment signal to the display unit 100 corresponding to the failed power module, so that the input required by the display unit 100 is reduced to the preset input power, so that the adjacent power module 200 can ensure that its corresponding display unit 100 is normal.
  • the system card when the power supply module fails, the system card only needs to send an interrupt signal to the failed power supply module after detecting that the output status parameter of the power supply module is abnormal, so that the failed power supply module Stop output, no need to set a specific cut-off module to cut off the failed power module. Moreover, since each of the power supply modules is cascaded, that is, the current between the power supply modules remains equal, that is, there is current flowing between the failed power supply module and the normal power supply module. After the interrupt signal sent by the system card is sent, the adjacent power supply module outputs operating power to the corresponding display unit through the failed power supply module.
  • the power supply module 200 has an output detection terminal.
  • the output detection terminal of the power module 200 is connected to the corresponding detection terminal of the system card 300.
  • the output detection terminal of the power module 200 is used to send the output status of the power module 200 to the system card 300.
  • the power supply module 200 supplies power to the corresponding display unit 100, and the power supply module 200 outputs power to the corresponding display unit 100, so that the corresponding display unit 100 is displayed normally.
  • the system card 300 needs to accurately determine the output state of the power module 200, so the output state of the power module 200 needs to be detected.
  • the output state of the power supply module 200 includes a normal output state and a fault state.
  • the output detection terminal of the power supply module 200 outputs a corresponding detection signal.
  • the current detection signal corresponding to the output current of the power supply module 200 For another example, the voltage detection signal corresponding to the output current of the power supply module 200.
  • the power detection signal corresponding to the output current of the power supply module 200 The detection terminal of the system card 300 obtains the detection signal output by the output detection terminal of the power module 200, and converts it into corresponding output state parameters, so that the system card 300 can receive and determine whether the power module 200 is in a fault state .
  • an analog-to-digital converter or a digital signal processor may be used, so that the output state of the power module 200 is detected by the system card 300, so that the system card 300 can check the output state of the power module 200 as normal. Or abnormal state for accurate judgment.
  • the power module 200 has an output control terminal.
  • the output control terminal of the power module 200 is connected to the corresponding second output terminal of the system card 300.
  • the output control terminal of the power module 200 is used to control the output state of the power module 200.
  • the detection terminal of the system card 300 obtains the output state parameters of the power module 200, it analyzes and judges them. That is, the output state parameters of the power module 200 are compared with the preset state parameters, so as to determine the current operating state of the power module 200.
  • the output state parameter of the power supply module 200 is the output power of the power supply module 200
  • the preset state parameter is the output power corresponding to the power supply module 200 during normal output.
  • the system card 300 When the system card 300 detects that the output state parameter is less than the preset state parameter, the system card 300 determines that the output state of the power module 200 is a fault state. At this time, the first output terminal of the system card 300 sends a power adjustment signal to the corresponding display unit 100, so that the input power of the display unit 100 corresponding to the power module 200 is reduced, so that the display corresponding to the power module 200 is The brightness of the cell 100 decreases. However, it is still in the display state, and the black screen of the display unit 100 corresponding to the power supply module 200 is avoided.
  • the second output terminal of the system card 300 is connected to the output control terminal of the power module 200 so that adjacent The power output of the power supply module 200 to the corresponding display unit 100 through the failed power supply module is reduced to match the decrease in the input power of the display unit 100, ensuring that the display unit 100 corresponding to the failed power supply module runs at a lower power, thereby It is ensured that the display unit 100 corresponding to the failed power module is displayed with a lower brightness, and the black screen rate of the display unit 100 corresponding to the failed power module is reduced.
  • the black screen rate of the display unit corresponding to the failed power module is reduced by about 99.8% to 99.9%, that is, the black screen probability of the display unit corresponding to each failed power module It is 0.1% to 0.2%.
  • the display unit 100 is provided with a power adjustment module 110.
  • the first output terminal of the system card 300 is connected to the input terminal of the power adjustment module 110.
  • the output end of the power adjustment module 110 is connected to the display unit 100.
  • the power adjustment module 110 is configured to receive the power adjustment signal sent by the system card 300, and obtain the input power of the corresponding display unit 100 according to the power adjustment signal. That is, the display brightness of the corresponding display unit 100 is obtained according to the power adjustment signal, and the power adjustment module 110 sends the input power request signal corresponding to the power adjustment signal to the display unit 100.
  • the power adjustment module 110 converts the power adjustment signal into an input power request signal, so that the display unit 100 operates at the input power corresponding to the power adjustment signal.
  • the input power request signal corresponding to the power adjustment signal is the input power request signal required by the display unit 100 in the current state, that is, the input power required by the display unit 100 is determined.
  • the power supply module 200 fails, the input power corresponding to the power adjustment signal is less than the input power corresponding to the power supply module 200 in normal operation, so that the required input power of the display unit 100 of the failed power supply module is less than normal The input power of the power supply module 200.
  • the input power of the power supply module 200 after the failure occurs is reduced to match the decrease of the input power of the display unit 100 to ensure that the display unit 100 corresponding to the failed power supply module runs at a lower power. Therefore, it is ensured that the display unit 100 corresponding to the failed power module is displayed with lower brightness, and the black screen rate of the display unit 100 corresponding to the failed power module is reduced.
  • the display module 10 further includes a sending card 400.
  • the sending card 400 is connected to each of the system cards 300 respectively.
  • the sending card 400 sends a control signal to each system card according to the number of failed power modules detected by the system card.
  • the control signal controls the input power of all display units through the system card and maintains the same input power. That is, the control signal controls the system card to send the same power adjustment signal to the respective display units, so that the display units work at the same power and lower than the normal working power, so that the display units are lower than normal.
  • the brightness of the display brightness is displayed to achieve the same display effect of the screen.
  • the number of the power supply modules is two, and the number of the system cards corresponds to the number of the power supply modules one-to-one.
  • Two power modules are cascaded, and each power module is connected to a display unit and supplies power to the display unit.
  • Each system card is respectively connected with a power module and a corresponding display unit.
  • the maximum output power of the power supply module is 200W
  • the maximum input power required by the display unit is 150W.
  • the system card sends an interrupt signal to quickly interrupt the output power of the failed power module to the display unit, and controls the brightness of the display unit corresponding to the failed power module to be 10% of the entire screen.
  • the input power of the display unit corresponding to the faulty power supply module is 30W.
  • a normal power supply module temporarily carries the power consumption of the two display units.
  • the sending card detects the working status of the system card, directly reduces the brightness of the entire screen and meets that the maximum power consumption of a single display unit does not exceed 100W.
  • the number of the power supply modules is three.
  • the number of the system cards corresponds to the power supply module one to one.
  • Three power modules are cascaded, and each power module is connected to a display unit and supplies power to the display unit.
  • Each system card is respectively connected with a power module and a corresponding display unit.
  • Specific operating conditions for example, the maximum output power of the power supply module is 200W, and the maximum output power of the display unit is 150W.
  • the system card quickly interrupts the power output of the faulty power module to the display unit, and controls the brightness of the display unit corresponding to the faulty power module to be 10% of the entire screen.
  • the input power of the display unit corresponding to the faulty power supply module is 30W.
  • an adjacent normal power supply temporarily loads the power consumption of the two display units.
  • the sending card detects the working status of the system card, directly reduces the brightness of the entire screen and meets that the maximum power consumption of a single display unit does not exceed 133W.
  • the sending card reduces the brightness of the entire screen and meets that the maximum power consumption of a single display unit does not exceed 66W.
  • a display screen including: a screen body and the display module as described in any of the above embodiments.
  • the display module is connected with the screen body.
  • the light emitting surface of the display unit faces away from the screen body.
  • the power module and the system card are arranged on a side of the display unit close to the screen body.
  • the output status parameters of the power supply module are obtained, so that it is convenient to know whether the current power supply module is faulty.
  • the display unit corresponding to the failed power module is powered by the adjacent power source, and the power adjustment signal is sent to the display unit corresponding to the failed power module, so that the input required by the display unit is reduced to the preset input power, so that the adjacent power module
  • the display unit corresponding to the faulty power module is ensured to continue to display, avoiding the situation that the display unit corresponding to the faulty power module is not displayed, and reducing the probability of black screen of the display unit.

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Abstract

本公开涉及一种显示模组、显示屏及显示屏电源备份方法，所述方法包括获取电源模块的输出状态参数；检测输出状态参数与预设状态参数是否匹配；当输出状态参数与预设状态参数不匹配时，向电源模块发送中断信号；向电源模块对应的显示单元发送功率调节信号。在发生故障后，只停止故障电源模块的输出，通过相邻电源为故障电源模块对应的显示单元供电，而通过向故障电源模块对应的显示单元发送功率调节信号，使得该显示单元所需的输入降低至预设输入功率，从而使得相邻电源模块在保证自身对应的显示单元正常供电的情况下，确保故障电源模块对应的显示单元持续显示，避免了故障电源模块对应的显示单元不显示的情况，降低了显示单元的黑屏几率。

Description

显示模组、显示屏及显示屏电源备份方法
相关申请
本公开要求2019年12月11日申请的，申请号为201911268602.4，名称为“显示模组、显示屏及显示屏电源备份方法”的中国专利申请的优先权，在此将其全文引入作为参考。
技术领域
本公开涉及显示屏技术领域，特别是涉及一种显示模组、显示屏及显示屏电源备份方法。
背景技术
近年来，随着显示屏技术的发展，越来越多的显示屏用于各类场景。在日常生活中，各类显示屏的使用途径在持续增多。由于显示屏是用于显示图像，需要对其进行供电以保证其正常显示。传统的显示屏的每一个显示区域对应有供电电源为其供电。为了确保显示屏的正常显示，即确保每一个显示区域正常显示，当供电电源故障时，显示屏***将故障电源与显示屏断开连接。之后显示屏的***卡或发送卡根据电源功率与显示屏所需功率，判断需要输出的功率，最后显示屏***打开显示屏内部的通道开关，使得正常的供电电源为显示屏进行供电，从而实现所有正常的工作电源为包括故障电源对应的显示区域在内的显示屏进行供电。
但是，在上述过程中，由于故障电源是停止向对应的显示区域供电的。而且，在所有正常的供电电源为显示屏供电之前，故障电源对应的显示区域是处于不显示状态，导致显示屏出现一段时间的黑屏现象。在传统的处理芯片的响应时间范围内，例如，显示屏内的***卡和发送卡，显示屏还是会出现肉眼可见的短暂黑屏情况，而采用响应时间更短的处理芯片又会增大显示屏的制造成本。
发明内容
基于此，有必要提供一种降低黑屏几率的显示模组、显示屏及显示屏电源备份方法。
一种显示屏电源备份方法，包括：获取电源模块的输出状态参数；检测所述输出状态参数与预设状态参数是否匹配；当所述输出状态参数与所述预设状态参数不匹配时，向所述电源模块发送中断信号，以使所述电源模块停止向对应显示单元输出功率；向所述电源模块对应的显示单元发送功率调节信号，以使所述电源模块对应的显示单元所需的输入功率降低至预设输入功率；其中，显示屏具有多个电源模块，相邻两个所述电源模块之间级联，且相邻 的正常电源模块通过故障的电源模块为对应显示单元提供预设输入功率。
在其中一个实施例中，所述获取电源模块的输出状态参数包括：获取电源模块的输出功率。
在其中一个实施例中，所述检测所述输出状态参数与预设状态参数是否匹配包括：检测所述输出功率是否大于或等于预设功率。
在其中一个实施例中，所述检测所述输出功率是否大于或等于预设功率之后还包括：当所述输出功率大于或等于所述预设功率时，向所述电源模块发送正常运行信号。
在其中一个实施例中，所述当所述输出状态参数与所述预设状态参数不匹配时，向所述电源模块发送中断信号，以使所述电源模块停止向对应显示单元输出功率包括：当所述输出功率小于所述预设功率时，向所述电源模块发送中断信号，以中断所述电源模块为对应显示单元模块输出功率。
在其中一个实施例中，所述向所述电源模块对应的显示单元发送功率调节信号包括：获取显示屏的预设亮度参数；根据所述预设亮度参数获取功率调节信号，并将所述功率调节信号发送至所述电源模块对应的显示单元。
在其中一个实施例中，所述预设亮度参数为显示单元在正常显示时亮度参数的1/20～1/5。
在其中一个实施例中，各所述电源模块的型号相同，各所述电源模块的额定输出功率与所述显示单元正常显示时对应的输入功率相等，所述电源模块的额定功率至最大输出功率之间的多余功率为故障电源模块对应的显示单元提供预设输入功率。
在其中一个实施例中，所述显示屏的显示单元的数量为N，所述预设输入功率的最大值为所述电源模块的最大输出功率与额定功率的差值，所述预设输入功率的最小值为所述电源模块的最大输出功率与额定功率的差值的1/(N-1)，根据所述显示屏中显示单元的数量，对应调整所述预设输入功率的大小。
在其中一个实施例中，将所述电源模块的物理输出信号转换为具体的数值参数，以便于获取所述电源模块的输出状态参数。
在其中一个实施例中，所述预设亮度参数与所述预设输入功率正相关；
所述功率调节信号用于控制故障的电源模块对应的显示单元的输入功率；
所述预设输入功率为显示单元的最低亮度是对应的输入功率，使得所述预设输入功率在作为故障的电源模块对应的显示单元的工作功率时，故障的电源模块对应的显示单元的显示亮度维持在相对较低的亮度进行显示。
在其中一个实施例中，所述预设亮度参数为显示单元在正常显示时亮度参数的1/10；
所述预设亮度参数对应的所述预设输入功率根据所述电源模块的额定输出功率以及最大输出功率确定；
所述电源模块的额定输出功率用于为各自对应显示单元供电，所述电源模块超出与额定 输出功率的部分用于为故障电源模块对应的显示单元供电；其中，所述预设亮度参数对应的所述预设输入功率以所述电源模块的最大输出功率与额定输出功率的差值为参考：当所述显示屏的显示单元的数量为N时，所述预设输入功率为电源模块的最大输出功率与额定输出功率的差值的1/(N-1)；
根据上述比值，调整所述电源模块的额定输出功率与最大输出功率，进而对应调整所述预设输入功率对应的亮度，具体推导公式如下：
{[1/(N-1)]*(P max-P 0)}/P 0＝A
P max/P 0＝1+A(N-1)
其中，P 0为电源模块的额定输出功率，P max为电源模块的最大输出功率，N为显示屏上的显示单元的总数量，A为所述预设亮度参数与显示单元在正常显示时亮度参数的比值。
一种显示模组，包括：多个显示单元、多个电源模块以及与其对应的***卡，每一所述电源模块的输出端与一所述显示单元连接，并为所述显示单元供电，每一所述***卡的检测端与一所述电源模块连接，所述***卡的第一输出端与所述电源模块对应的所述显示单元连接；相邻两个所述电源模块之间级联，且相邻两个所述电源模块之间的电流相等，以使当电源模块发生故障时，相邻正常电源模块通过故障电源模块为对应的显示单元提供预设输入功率；所述***卡用于获取电源模块的输出状态参数；所述***卡还用于检测所述输出状态参数与预设状态参数是否匹配；所述***卡还用于当所述输出状态参数与所述预设状态参数不匹配时，向所述电源模块发送中断信号，以使所述电源模块停止向对应显示单元输出功率；所述***卡还用于向所述电源模块对应的显示单元发送功率调节信号，以使所述电源模块对应的显示单元所需的输入功率降低至预设输入功率。
在其中一个实施例中，所述电源模块具有输出检测端，所述电源模块的输出检测端与对应的所述***卡的检测端连接，所述电源模块的输出检测端用于向所述***卡发送所述电源模块的输出状态。
在其中一个实施例中，所述电源模块具有输出控制端，所述电源模块的输出控制端与对应的所述***卡的第二输出端连接，所述电源模块的输出控制端用于控制所述电源模块的输出状态。
一种显示屏，包括：屏体以及如上述任一实施例中所述的显示模组，所述显示模组与所述屏体连接，所述显示单元的发光面背离所述屏体，所述电源模块和所述***卡设置于所述显示单元靠近所述屏体的一面。
上述显示模组、显示屏及显示屏电源备份方法中，通过获取电源模块的输出状态参数，便于知晓当前电源模块是否发生故障，在发生故障后，只停止故障电源模块的输出，通过相邻电源为故障电源模块对应的显示单元供电，而通过向故障电源模块对应的显示单元发送功率调节信号，使得该显示单元所需的输入降低至预设输入功率，从而使得相邻电源模块在保 证自身对应的显示单元正常供电的情况下，确保故障电源模块对应的显示单元持续显示，避免了故障电源模块对应的显示单元不显示的情况，从而有效地降低了显示单元的黑屏几率。
附图说明
为了更清楚地说明本公开实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据公开的附图获得其他的附图。
图1为一实施例的显示屏电源备份方法的流程图；
图2为一实施例的显示模组的结构示意图。
附图标记说明
显示模组10
显示单元100 电源模块200 ***卡300
具体实施方式
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
需要说明的是，当元件被称为“设置于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表述只是为了说明的目的，并不表示是唯一的实施方式。
除非另有定义，本文所使用的所有的技术和科学术语与属于本公开的技术领域的技术人员通常理解的含义相同。在本公开的说明书中所使用的术语只是为了描述具体的实施方式的目的，不是旨在于限制本公开。本文所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。
本公开涉及一种显示屏电源备份方法。在其中一个实施例中，所述显示屏电源备份方法包括：获取电源模块的输出状态参数；检测所述输出状态参数与预设状态参数是否匹配；当所述输出状态参数与所述预设状态参数不匹配时，向所述电源模块发送中断信号，以使所述电源模块停止向对应显示单元输出功率；向所述电源模块对应的显示单元发送功率调节信号，以使所述电源模块对应的显示单元所需的输入功率降低至预设输入功率；其中，显示屏具有多个电源模块，相邻两个所述电源模块之间级联，且相邻的正常电源模块通过故障的电源模 块为对应显示单元提供预设输入功率。上述显示屏电源备份方法中，获取电源模块的输出状态参数，便于知晓当前电源模块是否发生故障，在发生故障后，只停止故障电源模块的输出，通过相邻电源为故障电源模块对应的显示单元供电，而通过向故障电源模块对应的显示单元发送功率调节信号，使得该显示单元所需的输入降低至预设输入功率，从而使得相邻电源模块在保证自身对应的显示单元正常供电的情况下，确保故障电源模块对应的显示单元持续显示，避免了故障电源模块对应的显示单元不显示的情况，降低了显示单元的黑屏几率。
请参阅图1，其为本公开一实施例的显示屏电源备份方法的流程图。
在其中一个实施例中，一种显示屏电源备份方法，包括以下步骤的部分或全部。
S100：获取电源模块的输出状态参数。
在本实施例中，显示屏包括多个显示单元，多个所述显示单元阵列分布，形成一个完整的显示画面。其中，每一个所述显示单元对应连接一个电源模块。所述电源模块为所述显示单元供电，以维持所述显示屏的画面正常显示，确保各所述显示单元的正常发光。所述电源模块的输出为所述显示单元的正常显示提供了保障。所述电源模块的输出状态影响着所述显示单元的正常显示，即所述电源模块的输出状态正常时，所述显示单元正常显示，而所述电源模块的输出状态故障时，表明了所述电源模块处于异常状态，此时所述显示单元将不再显示。为了便于检测所述电源模块的输出状态，对其输出量进行数字化处理，即将所述电源模块的物理输出信号转换为具体的数值参数。例如，将所述电源模块的输出电流这一模拟输出信号转换为电流幅值的均值。又如，将所述电源模块的输出电压这一模拟输出信号转换为电压幅值的均值。又如，将所述电源模块的输出电流信号和输出电压信号转换为功率的均值。上述转化过程，可使用A/D(Analog/Digital，模拟/数字)转换器或者DSP(digital signal processor，数字信号处理器)，使得所述电源模块的输出状态被检测，从而便于后续对所述电源模块的输出状态是正常状态还是异常状态进行准确判断。
S200：检测所述输出状态参数与预设状态参数是否匹配。
在本实施例中，所述输出状态参数直接体现出所述电源模块的当前运行状态。即所述电源模块的当前输出状态与所述输出状态参数相关。而所述预设参数为所述电源模块在正常运行状态下对应的输出状态参数。检测所述输出状态参数与预设状态参数是否匹配，即是将所述电源模块的当前输出状态与正常运行时的输出状态进行比较，也即是以所述电源模块在正常运行状态下对应的输出状态参数为标准，对所述电源模块的当前运行状态进行比较。这样，所述电源模块的当前运行状态与其正常运行状态进行比较，即为将所述电源模块的实时运行状态对应的参数与一个定值参数进行比较，上述两个参数的比较结果分为两种，一种结果表明所述电源模块处于正常运行状态，另一种结果则表明所述电源模块处于异常运行状态。根据上述两个参数的比较结果，便于判断出所述电源模块的当前运行状态，从而便于后续对所述电源模块的不同运行状态进行对应的操作。
S300：当所述输出状态参数与所述预设状态参数不匹配时，向所述电源模块发送中断信号，以使所述电源模块停止向对应显示单元输出功率。
在本实施例中，所述输出状态参数与所述预设状态参数不匹配，表明了所述电源模块的当前运行状态与其正常运行状态不匹配，即表明了所述电源模块的当前输出状态与其在正常运行状态下对应的输出状态不匹配，也即表明了所述电源模块的当前输出状态对应的参数与其在正常运行状态下的输出状态对应的参数不同，此时，所述电源模块的输出状态为异常状态，即所述电源模块的当前输出状态为故障状态，例如，所述电源模块的输出功率小于其正常运行时的输出功率。这样，所述电源模块的输出是处于不稳定状态，为了降低对所述显示单元的显示稳定性的影响，对于故障的电源模块，通过向其发送中断信号，使得故障的电源模块停止向对应的显示单元输出功率。但是，此时故障的电源模块还是与对应的显示单元连接的，便于相邻的正常运行的电源模块通过故障电源模块为显示单元供电，此时故障的电源模块作为一个导通对应显示单元与相邻电源模块的通道。也可认为此时的故障电源模块相当于一根导线，使得相邻的正常运行的电源模块与故障电源模块对应的显示单元电连接，便于后续相邻的正常运行的电源模块为故障电源模块对应的显示单元提供所需的输入功率，从而使得相邻电源在保证自身对应的显示单元正常供电的情况下，确保故障电源对应的显示单元持续显示，避免了故障电源对应的显示单元不显示的情况，降低了黑屏几率。
S400：向所述电源模块对应的显示单元发送功率调节信号，以使所述电源模块对应的显示单元所需的输入功率降低至预设输入功率；其中，显示屏具有多个电源模块，相邻两个所述电源模块之间级联，且相邻的正常电源模块通过故障的电源模块为对应显示单元提供预设输入功率。
在本实施例中，所述显示单元内设置有用于调节所需要的输入功率的功率调节单元，功率调节单元接收到所述功率调节信号后，调整故障电源模块对应所述显示单元的输入功率，使得故障电源模块对应所述显示单元处于输入功率相对较低的运行状态，从而使得故障电源模块对应所述显示单元所显示的画面亮度处于相对较低的亮度。其中，所述预设输入功率为显示屏中的***卡内部程序提前设置的。所述预设输入功率根据显示屏中显示单元的数量以及所述电源模块的最大输出功率设置的。所述预设输入功率确保故障电源模块对应的显示单元的相对较低的输入功率，而这一输入功率还可以确保显示单元所显示的画面可被人眼所接收，即使得故障电源模块对应的显示单元的显示亮度处于相对较低的亮度。由于多个所述电源模块之间采用级联方式，而电源级联的特点是相邻电源之间的电流时刻保持相等。在正常运行时，即没有故障的电源模块时，每个所述电源模块的输出功率是相等的，相邻所述电源模块之间的电流也是相等的。而在出现故障的电源模块时，故障的电源模块由于不再输出，使得故障的电源模块与相邻正常运行的电源模块之间的电流发生变化。为了继续维持相邻电源模块之间的电流相同的特性，向所述电源模块对应的显示单元发送功率调节信号，使得相 邻的正常运行的电源模块为故障的电源模块对应的显示单元输出功率，从而使得各电源模块之间还是级联方式，同时也为故障的电源模块对应的显示单元提供预设输入功率，确保了故障的电源模块对应的显示单元在发生故障时以所述预设输入功率进行工作，即确保了故障的电源模块对应的显示单元在发生故障时以相对较低的输入功率运行，也即确保了故障的电源模块对应的显示单元在发生故障时以相对较低的亮度进行显示。
在其中一个实施例中，所述预设输入功率与电源模块的额定输出功率以及最大输出功率相关。由于各电源模块的型号相同，电源模块的额定输出功率与显示单元正常显示时对应的输入功率相等。所述电源模块的额定功率至最大输出功率之间的多余功率为故障电源模块对应的显示单元提供预设输入功率。
在其中一个实施例中，所述显示屏的显示单元的数量为N。所述预设输入功率的最大值为电源模块的最大输出功率与额定功率的差值。所述预设输入功率的最小值为电源模块的最大输出功率与额定功率的差值的1/(N-1)，根据显示屏的数量，对应调整所述预设输入功率的大小。
在其中一个实施例中，所述获取电源模块的输出状态参数包括：获取电源模块的输出功率。在本实施例中，显示屏由多个显示单元组成，多个所述显示单元阵列分布，形成一个完整的显示画面。其中，每一个所述显示单元对应连接一个电源模块，所述电源模块为所述显示单元供电，以维持所述显示屏的画面正常显示，确保各所述显示单元的正常发光。所述电源模块的输出为所述显示单元的正常显示提供了保障，所述电源模块的输出状态影响着所述显示单元的正常显示。即所述电源模块的输出状态正常时，所述显示单元正常显示。而所述电源模块的输出状态故障时，表明了所述电源模块处于异常状态，此时所述显示单元将不再显示。为了便于检测所述电源模块的输出状态，对其输出量进行数字化处理，即将所述电源模块的物理输出信号转换为具体的数值参数。例如，将所述电源模块的输出电流信号和输出电压信号转换为平均功率值。上述数字化处理过程，可通过各类将模拟信号转换为数字信号的装置。例如，模数转换器或者数字信号处理器。这样，通过将所述电源模块的输出状态转换为对应的功率数值，便于根据数值大小进行直观的比较，即使得所述电源模块的当前输出状态以数字形式体现，从而便于对所述电源模块的输出状态是正常状态还是异常状态进行准确判断。
在其中一个实施例中，所述检测所述输出状态参数与预设状态参数是否匹配包括：检测所述输出功率是否大于或等于预设功率。在本实施例中，所述预设功率为所述电源模块在正常运行状态下对应的输出功率，所述输出功率的大小直接反映了所述电源模块的当前运行状态。即所述输出功率的大小直接反映了所述电源模块的运行状态是处于故障状态还是正常状态，也即所述输出功率的大小直接反映了所述电源模块的运行状态是否正常。检测所述输出功率是否大于或等于预设功率，即是将所述电源模块的当前输出功率与正常运行时的输出功 率进行比较，也即是以所述电源模块在正常运行状态下对应的输出功率为标准，对所述电源模块的当前输出功率进行比较。这样，所述电源模块的当前输出功率与其正常运行状态对应的输出功率进行比较，即为将所述电源模块的实时运行状态对应的输出功率与一个定值功率进行比较。上述两个功率的比较结果分为两种，其中一种结果为所述输出功率大于或等于所述预设功率，表明所述电源模块处于正常运行状态。另一种结果为所述输出功率小于所述预设功率，则表明所述电源模块处于异常运行状态。根据上述两个功率的比较结果，便于判断出所述电源模块的当前运行状态，从而便于后续对所述电源模块的不同运行状态进行对应的操作。
在其中一个实施例中，所述当所述输出状态参数与所述预设状态参数不匹配时，向所述电源模块发送中断信号，以使所述电源模块停止向对应显示单元输出功率包括：当所述输出功率小于所述预设功率时，向所述电源模块发送中断信号，以中断所述电源模块为对应显示单元模块输出功率。在本实施例中，所述输出功率小于所述预设功率，表明了所述电源模块的当前输出功率小于其正常运行状态对应的输出功率。即表明了所述电源模块的当前输出功率低于其在正常运行状态下对应的输出功率。也即表明了所述电源模块的当前输出功率低于正常值。此时，所述电源模块的输出状态为异常状态，即所述电源模块的当前输出状态为故障状态。这样，所述电源模块的输出是处于不稳定状态，为了降低对所述显示单元的显示稳定性的影响，对于故障的电源模块，通过向其发送中断信号，使得故障的电源模块停止向对应的显示单元输出功率。即故障的电源模块的功率不再输入至对应的显示单元。但是，此时故障的电源模块还是与对应的显示单元连接的，便于相邻的正常运行的电源模块通过故障电源模块为显示单元供电。此时故障的电源模块作为一个导通对应显示单元与相邻电源模块的通道，也可认为此时的故障电源模块相当于一根导线。故障的电源模块使得相邻的正常运行的电源模块与故障电源模块对应的显示单元电连接，便于相邻的正常运行的电源模块为故障电源模块对应的显示单元提供所需的输入功率。从而使得相邻电源在保证自身对应的显示单元正常供电的情况下，确保故障电源对应的显示单元持续显示，避免了故障电源对应的显示单元不显示的情况，降低了黑屏几率。
在其中一个实施例中，所述检测所述输出功率是否大于或等于预设功率之后还包括：当所述输出功率大于或等于所述预设功率时，向所述电源模块发送正常运行信号。在本实施例中，所述输出功率大于或等于所述预设功率，表明了所述电源模块的当前运行状态为正常运行状态。此时，所述电源模块只需维持之前的输出功率即可，即保持所述电源模块的输出功率不变，使得所述电源模块持续正常输出，从而确保所述电源模块对应的显示单元的正常显示。
在其中一个实施例中，所述向所述电源模块对应的显示单元发送功率调节信号包括：获取显示屏的预设亮度参数；根据所述预设亮度参数获取功率调节信号，并将所述功率调节信 号发送至所述电源模块对应的显示单元。在本实施例中，显示单元的亮度与其输入的功率相关，使得所述预设亮度参数与所述预设输入功率相对应，。即所述预设亮度参数与所述预设输入功率正相关，也即所述预设亮度参数减小时，所述预设输入功率对应减小。所述功率调节信号是用于控制故障的电源模块对应的显示单元的输入功率，而所述功率调节信号又是根据所述预设亮度参数获取的。所述预设亮度参数是根据所述预设输入功率对应设置的，由于所述预设输入功率为显示单元的最低亮度是对应的输入功率，使得所述预设输入功率在作为故障的电源模块对应的显示单元的工作功率时，故障的电源模块对应的显示单元的显示亮度维持在相对较低的亮度。这一相对较低的亮度是确保显示单元显示，避免了显示单元不显示的情况，降低了显示单元的黑屏几率。
在其中一个实施例中，所述预设亮度参数为显示单元在正常显示时亮度参数的1/20～1/5。在本实施例中，为了不影响正常的电源模块为对应的显示单元输出功率，将显示单元的所述预设亮度参数设置为小于其正常显示时亮度参数。而且，所述预设亮度参数远小于其正常显示时亮度参数，使得在电源模块故障时，对应的显示单元的亮度以一个极低的亮度进行显示。所述预设亮度参数对应的亮度还是在人眼所能分辨的范围内，避免了显示单元所显示的画面被误以为是不显示的情况。在其中一个实施例中，所述预设亮度参数为显示单元在正常显示时亮度参数的1/10。在其中一个实施例中，所述预设亮度参数对应的所述预设输入功率根据所述电源模块的额定输出功率以及最大输出功率确定。所述电源模块的额定输出功率用于为各自对应显示单元供电。所述电源模块超出与额定输出功率的部分用于为故障电源模块对应的显示单元供电。其中，所述预设亮度参数对应的所述预设输入功率以所述电源模块的最大输出功率与额定输出功率的差值为参考。例如，当所述显示屏的显示单元的数量为N时，所述预设输入功率为电源模块的最大输出功率与额定输出功率的差值的1/(N-1)。根据上述比值，调整电源模块的额定输出功率与最大输出功率，进而对应调整所述预设输入功率对应的亮度，具体推导公式如下：
{[1/(N-1)]*(P max-P 0)}/P 0＝A
P max/P 0＝1+A(N-1)
其中，P 0为电源模块的额定输出功率，P max为电源模块的最大输出功率，N为显示屏上的显示单元的总数量，A为所述预设亮度参数与显示单元在正常显示时亮度参数的比值。这样，在保证所述预设亮度参数为显示单元在正常显示时亮度参数的1/10的情况下，所述预设输入功率为电源模块额定输出功率的1/10，使得电源模块的最大输出功率与额定输出功率的比值为10：N+9。当确定显示屏的数量时，根据电源模块的额定输出功率与最大输出功率，对应调整所述预设亮度参数与显示单元在正常显示时亮度参数的比值，进而实现对应调整所述预设输入功率对应的亮度，确保了正常电源模块的正常运行。
在其中一个实施例中，一种显示模组，其采用上述任一实施例中所述的显示屏电源备份 方法实现。在其中一个实施例中，所述显示模组具有用于实现所述显示屏电源备份方法各步骤对应的功能模块。在其中一个实施例中，请参阅图2，提供一种显示模组10，包括：多个显示单元100、多个电源模块200以及与其对应的***卡300。每一所述电源模块200的输出端与一所述显示单元100连接，并为所述显示单元100供电，每一所述***卡300的检测端与一所述电源模块200连接。所述***卡300的第一输出端与所述电源模块200对应的所述显示单元100连接。相邻两个所述电源模块200之间级联，且相邻两个所述电源模块200之间的电流相等，以使当电源模块200发生故障时，相邻正常电源模块200通过故障电源模块为对应的显示单元100提供预设输入功率。所述***卡300用于获取电源模块200的输出状态参数。所述***卡300还用于检测所述输出状态参数与预设状态参数是否匹配。所述***卡300还用于当所述输出状态参数与所述预设状态参数不匹配时，向所述电源模块200发送中断信号，以使所述电源模块200停止向对应显示单元100输出功率。所述***卡300还用于向所述电源模块200对应的显示单元100发送功率调节信号，以使所述电源模块200对应的显示单元100所需的输入功率降低至预设输入功率。
在上述显示模组10中，***卡300获取电源模块200的输出状态参数，便于知晓当前电源模块200是否发生故障。在发生故障后，***卡300向故障电源模块发送中断信号，只停止故障的电源模块的输出，但还保持与显示单元100的电连接，通过相邻电源为故障电源模块对应的显示单元100供电。***卡300通过向故障电源模块对应的显示单元100发送功率调节信号，使得该显示单元100所需的输入降低至预设输入功率，从而使得相邻电源模块200在保证自身对应的显示单元100正常供电的情况下，确保故障电源模块对应的显示单元100持续显示，避免了故障电源模块对应的显示单元100不显示的情况，降低了显示模组10的黑屏几率。在上述实施例中，当所述电源模块出现故障时，所述***卡在检测到所述电源模块的输出状态参数异常后，只需向故障的电源模块发送中断信号，以使得故障的电源模块停止输出，无需设置特定的切断模块将故障的电源模块切断。而且，由于各所述电源模块是级联的，即各所述电源模块之间的电流保持相等，即故障的电源模块与正常的电源模块之间有电流通过。所述***卡发送的中断信号发送后，相邻的电源模块通过故障的电源模块向对应的显示单元输出运行的功率。
在其中一个实施例中，请参阅图2，所述电源模块200具有输出检测端。所述电源模块200的输出检测端与对应的所述***卡300的检测端连接。所述电源模块200的输出检测端用于向所述***卡300发送所述电源模块200的输出状态。在本实施例中，所述电源模块200为各自对应的显示单元100进行供电，所述电源模块200向对应的显示单元100输出功率，使得对应的显示单元100正常显示。而***卡300在所述电源模块200出现故障时，需要对所述电源模块200的输出状态进行准确判断，因此需要对所述电源模块200的输出状态进行检测。其中，所述电源模块200的输出状态包括正常输出状态和故障状态。所述电源模块200 的输出检测端输出对应的检测信号。例如，所述电源模块200的输出电流对应的电流检测信号。又如，所述电源模块200的输出电流对应的电压检测信号。又如，所述电源模块200的输出电流对应的功率检测信号。所述***卡300的检测端获取所述电源模块200的输出检测端输出的检测信号，并将其转换为对应的输出状态参数，便于***卡300接收以及判断所述电源模块200是否处于故障状态。上述转化过程，可使用模数转换器或者数字信号处理器，使得所述电源模块200的输出状态被所述***卡300检测，从而便于***卡300对所述电源模块200的输出状态是正常状态还是异常状态进行准确判断。
在其中一个实施例中，请参阅图2，所述电源模块200具有输出控制端。所述电源模块200的输出控制端与对应的所述***卡300的第二输出端连接。所述电源模块200的输出控制端用于控制所述电源模块200的输出状态。在本实施例中，所述***卡300的检测端在获取到所述电源模块200的输出状态参数后，对其进行分析判断。即将所述电源模块200的输出状态参数与所述预设状态参数进行比较，从而判断出所述电源模块200的当前运行状态。其中，所述电源模块200的输出状态参数为所述电源模块200的输出功率，所述预设状态参数为所述电源模块200在正常输出时对应的输出功率。当***卡300检测到所述输出状态参数小于所述预设状态参数时，所述***卡300确定所述电源模块200的输出状态为故障状态。此时，所述***卡300的第一输出端向对应的显示单元100发送功率调节信号，使得所述电源模块200对应的显示单元100的输入功率降低，从而使得所述电源模块200对应的显示单元100的亮度降低。但还是处于显示状态，而避免了所述电源模块200对应的显示单元100黑屏的情况。在所述***卡300的第一输出端向对应的显示单元100发送功率调节信号的同时，所述***卡300的第二输出端与所述电源模块200的输出控制端连接，使得相邻的电源模块200通过故障的电源模块输出到对应的显示单元100的功率降低，以配合显示单元100的输入功率降低的情况，确保了故障的电源模块对应的显示单元100以较低的功率运行，从而确保了故障的电源模块对应的显示单元100以较低的亮度进行显示，降低了故障的电源模块对应的显示单元100的黑屏率。在其中一个具体应用的实施例中，经实际测试，降低了故障的电源模块对应的显示单元的黑屏率约为99.8％～99.9％，即每一个发生故障的电源模块对应的显示单元的黑屏概率为0.1％～0.2％。
在其中一个实施例中，请参阅图2，所述显示单元100上设置有功率调整模块110。所述***卡300的第一输出端与所述功率调整模块110的输入端连接。所述功率调整模块110的输出端与所述显示单元100连接。在本实施例中，所述功率调整模块110用于接收所述***卡300发送的功率调节信号，根据所述功率调节信号获取对应的显示单元100的输入功率。即根据所述功率调节信号获取对应的显示单元100的显示亮度，所述功率调整模块110将所述功率调节信号对应的输入功率请求信号发送至显示单元100。即所述功率调整模块110将所述功率调节信号转换为输入功率请求信号，使得显示单元100以所述功率调节信号对应的 输入功率进行工作。其中，所述功率调节信号对应的输入功率请求信号为显示单元100当前状态下所需的输入功率请求信号，即确定显示单元100所需要的输入功率。在所述电源模块200故障时，所述功率调节信号对应的输入功率小于所述电源模块200在正常工作时对应的输入功率，使得故障的电源模块的显示单元100的所需的输入功率小于正常的电源模块200的输入功率。从而使得所述电源模块200在发生故障后的输入功率减小，以配合显示单元100的输入功率降低的情况，确保了故障的电源模块对应的显示单元100以较低的功率运行。从而确保了故障的电源模块对应的显示单元100以较低的亮度进行显示，降低了故障的电源模块对应的显示单元100的黑屏率。
在其中一个实施例中，请参阅图2，所述显示模组10还包括发送卡400。所述发送卡400分别与各所述***卡300连接。所述发送卡400根据所述***卡检测到的故障电源模块的数量情况，向各所述***卡发送控制信号。所述控制信号通过所述***卡控制所有的显示单元的输入功率，并保持相同的输入功率。即所述控制信号控制所述***卡向各自对应的显示单元发送相同的功率调节信号，以使得各显示单元以相同且低于正常工作时的功率进行工作，从而使得各显示单元以低于正常显示亮度的亮度进行显示，达到画面显示效果一致。
在其中一个实施例中，所述电源模块的数量为两个，所述***卡的数量与所述电源模块一一对应。两个电源模块级联，每一个电源模块与一显示单元连接，并为显示单元供电。每一***卡分别与一个电源模块以及对应的显示单元连接。具体运行情况，电源模块的最大输出功率为200W，显示单元最大需要的输入功率为150W。当其中一个相邻的正常电源模块故障时，***卡发送中断信号以迅速中断故障电源模块向显示单元输出功率，并控制故障电源模块对应的显示单元的亮度将为整屏的10％。其中，故障电源模块对应的显示单元的输入功率为30W，此时一个正常的电源模块暂时带载两个显示单元的功耗。在十几秒之后，发送卡检测到***卡的工作状态，直接降低整屏的亮度且满足单个显示单元的最大功耗不超过100W。
在其中一个实施例中，所述电源模块的数量为三个。所述***卡的数量与所述电源模块一一对应。三个电源模块级联，每一个电源模块与一显示单元连接，并为显示单元供电。每一***卡分别与一个电源模块以及对应的显示单元连接。具体运行情况，例如，电源模块的最大输出功率200W，显示单元的最大需要150W。当其中一个电源模块故障时，***卡迅速中断故障电源模块向显示单元输出功率，并控制故障电源模块对应的显示单元的亮度将为整屏的10％。其中，故障电源模块对应的显示单元的输入功率为30W，此时一个相邻的正常电源暂时带载两个显示单元的功耗。在十几秒之后，发送卡检测到***卡的工作状态，直接降低整屏的亮度且满足单个显示单元的最大功耗不超过133W。又如，当2个电源模块故障时，同理发送卡降低整屏的亮度且满足单个显示单元最大功耗不超过66W。
在其中一个实施例中，提供一种显示屏，包括：屏体以及如上述任一实施例中所述的显 示模组。所述显示模组与所述屏体连接。所述显示单元的发光面背离所述屏体。所述电源模块和所述***卡设置于所述显示单元靠近所述屏体的一面。
上述显示屏中，获取电源模块的输出状态参数，便于知晓当前电源模块是否发生故障，在发生故障后，只停止故障电源模块的输出。通过相邻电源为故障电源模块对应的显示单元供电，而通过向故障电源模块对应的显示单元发送功率调节信号，使得该显示单元所需的输入降低至预设输入功率，从而使得相邻电源模块在保证自身对应的显示单元正常供电的情况下，确保故障电源模块对应的显示单元持续显示，避免了故障电源模块对应的显示单元不显示的情况，降低了显示单元的黑屏几率。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
最后，还需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本公开。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本公开的精神或范围的情况下，在其它实施例中实现。因此，本公开将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (15)

  1. 一种显示屏电源备份方法，其中，包括：
    获取电源模块的输出状态参数；
    检测所述输出状态参数与预设状态参数是否匹配；
    当所述输出状态参数与所述预设状态参数不匹配时，向所述电源模块发送中断信号，以使所述电源模块停止向对应显示单元输出功率；
    向所述电源模块对应的显示单元发送功率调节信号，以使所述电源模块对应的显示单元所需的输入功率降低至预设输入功率；其中，显示屏具有多个电源模块，相邻两个所述电源模块之间级联，且相邻的正常电源模块通过故障的电源模块为对应显示单元提供预设输入功率。
  2. 根据权利要求1所述的显示屏电源备份方法，其中，所述获取电源模块的输出状态参数包括：
    获取电源模块的输出功率。
  3. 根据权利要求2所述的显示屏电源备份方法，其中，所述检测所述输出状态参数与预设状态参数是否匹配包括：
    检测所述输出功率是否大于或等于预设功率。
  4. 根据权利要求3所述的显示屏电源备份方法，其中，所述检测所述输出功率是否大于或等于预设功率之后还包括：当所述输出功率大于或等于所述预设功率时，向所述电源模块发送正常运行信号。
  5. 根据权利要求3所述的显示屏电源备份方法，其中，所述当所述输出状态参数与所述预设状态参数不匹配时，向所述电源模块发送中断信号，以使所述电源模块停止向对应显示单元输出功率包括：
    当所述输出功率小于所述预设功率时，向所述电源模块发送中断信号，以中断所述电源模块为对应显示单元模块输出功率。
  6. 根据权利要求1所述的显示屏电源备份方法，其中，所述向所述电源模块对应的显示单元发送功率调节信号包括：
    获取显示屏的预设亮度参数；
    根据所述预设亮度参数获取功率调节信号，并将所述功率调节信号发送至所述电源模块对应的显示单元。
  7. 根据权利要求6所述的显示屏电源备份方法，其中，所述预设亮度参数为显示单元在正常显示时亮度参数的1/20～1/5。
  8. 根据权利要求7所述的显示屏电源备份方法，其中，各所述电源模块的型号相同，各所述电源模块的额定输出功率与所述显示单元正常显示时对应的输入功率相等，所述电源模块的额定功率至最大输出功率之间的多余功率为故障电源模块对应的显示单元提供预设输入功率。
  9. 根据权利要求8所述的显示屏电源备份方法，其中，所述显示屏的显示单元的数量为N，所述预设输入功率的最大值为所述电源模块的最大输出功率与额定功率的差值，所述预设输入功率的最小值为所述电源模块的最大输出功率与额定功率的差值的1/(N-1)，根据所述显示屏中显示单元的数量，对应调整所述预设输入功率的大小。
  10. 根据权利要求9所述的显示屏电源备份方法，其中，将所述电源模块的物理输出信号转换为具体的数值参数，以便于获取所述电源模块的输出状态参数。
  11. 根据权利要求7所述的显示屏电源备份方法，其中，所述预设亮度参数与所述预设输入功率正相关；
    所述功率调节信号用于控制故障的电源模块对应的显示单元的输入功率；
    所述预设输入功率为显示单元的最低亮度是对应的输入功率，使得所述预设输入功率在作为故障的电源模块对应的显示单元的工作功率时，故障的电源模块对应的显示单元的显示亮度维持在相对较低的亮度进行显示。
  12. 一种显示模组，包括：多个显示单元、多个电源模块以及与其对应的***卡，每一所述电源模块的输出端与一所述显示单元连接，并为所述显示单元供电，每一所述***卡的检测端与一所述电源模块连接，所述***卡的第一输出端与所述电源模块对应的所述显示单元连接；
    其中，相邻两个所述电源模块之间级联，且相邻两个所述电源模块之间的电流相等，以使当电源模块发生故障时，相邻正常电源模块通过故障电源模块为对应的显示单元提供预设输入功率。
  13. 根据权利要求12所述的显示模组，其中，
    所述***卡用于获取电源模块的输出状态参数；所述***卡还用于检测所述输出状态参数与预设状态参数是否匹配；所述***卡还用于当所述输出状态参数与所述预设状态参数不匹配时，向所述电源模块发送中断信号，以使所述电源模块停止向对应显示单元输出功率；所述***卡还用于向所述电源模块对应的显示单元发送功率调节信号，以使所述电源模块对应的显示单元所需的输入功率降低至预设输入功率。
  14. 根据权利要求12所述的显示模组，其中，所述电源模块具有输出检测端，所述电源模块的输出检测端与对应的所述***卡的检测端连接，所述电源模块的输出检测端用于向所述***卡发送所述电源模块的输出状态。
  15. 根据权利要求12所述的显示模组，其中，所述电源模块具有输出控制端，所述电源 模块的输出控制端与对应的所述***卡的第二输出端连接，所述电源模块的输出控制端用于控制所述电源模块的输出状态。
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