CN101944276A - LED screen dead pixel monitoring and early warning method and system - Google Patents
LED screen dead pixel monitoring and early warning method and system Download PDFInfo
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Abstract
The invention discloses an LED screen dead pixel monitoring and early warning method and system. The method comprises the following steps: a. setting the standard characteristic value of the dead pixel amount of a target LED display screen; b. detecting the display data of each pixel point of the target LED display screen; c. according to the display data, calculating the practical characteristic value of the dead pixel amount; d. comparing the practical characteristic value with the standard characteristic value; when the practical characteristic value is more than the standard characteristic value, outputting a comparison result; and e. according to the comparison result, generating early warning signal data, and giving out early warning. The system is correspondingly provided with a detection unit, a control unit, an early warning unit and a regulation unit. When the practical characteristic value of the dead pixel amount of the target LED display screen exceeds the preset standard characteristic value, the invention gives out early warning so as to ensure lower replacement difficulty and lower replacement and maintenance cost.
Description
Technical field
The present invention relates to lighting device, particularly relate to a kind of LED screen bad some monitoring and pre-alarming method and system.
Background technology
Development along with the LED display technique, LED display application and LED lamp decoration brightening application are low because of its energy consumption, color reducibility is strong, characteristics such as life-span length, enormous size, exotic shape, various occasions have been applied to more and more widely, particularly large LED display screen is being apparent more important in great occasion or the global activity.
In the prior art, there is the various faults detection scheme, can be to the trickle fault of LED display generation, detect and show comprising the bad point of LED, but, generally in large LED display screen, because the LED display area is bigger, the bad point of one or two accidental pixel shows visual effect influence and not obvious to the whole screen of LED display, therefore can neglect, have only when bad number of spots surpasses certain value, the integral body that just can influence LED display shows visual effect, thereby needs to change each bad some pixel place module, as the bad point of all LED place module is all changed, will increase the difficulty of replacing, and, cause the repair and replacement cost higher.
Therefore, there is defective in prior art, needs to improve.
Summary of the invention
Technical matters to be solved by this invention is, when being provided, the standard feature value that a kind of actual characteristic value of the bad number of spots when LED display surpasses its setting carries out early warning, thereby change the place module of each bad point according to the result, make the replacing difficulty lower, simultaneously, the lower-cost a kind of LED of repair and replacement shields bad some monitoring and pre-alarming method and shields a bad monitor and early warning system with the corresponding a kind of LED of this method.
Technical scheme of the present invention is as follows: the bad point of an a kind of LED screen monitoring and pre-alarming method wherein, may further comprise the steps: a, the standard feature value of bad number of spots of target LED display is set; The video data of b, each pixel of detection target LED display; C, according to video data, calculate the actual characteristic value of bad number of spots; D, actual characteristic value and standard feature value are compared,, then export comparing result when the actual characteristic value eigenwert that is above standard; E, according to comparing result, generate the early warning signal data and also send early warning.
Be applied to example, in the bad point of the described LED screen monitoring and pre-alarming method, behind step b, go back execution in step b1: according to described video data, determine whether each pixel is bad point, and, determine the position of each bad point in described target LED display.
Be applied to above-mentioned each example, in the bad point of the described LED screen monitoring and pre-alarming method, behind step e, go back execution in step e1: the position of indicating each bad point.
Be applied to above-mentioned each example, in the bad point of the described LED screen monitoring and pre-alarming method, behind the step e, go back execution in step f: the LED lamp of selecting the same class of beam split color scanner for use, preparation has the standardized module of performance parameter identify unit, adopts standardized module to change the module at each bad some place.
Be applied to above-mentioned each example, in the bad point of the described LED screen monitoring and pre-alarming method, behind the execution in step f, go back execution in step g:, adjust the brightness of described standardized module according to each performance parameter of described identify unit.
Corresponding with above-mentioned each example, the bad point of a kind of LED screen monitor and early warning system wherein, comprises detecting unit, control module and prewarning unit; Described detecting unit is provided with the plurality of detection subelement, is used for detecting respectively the video data of each pixel of target LED display; Described control module is provided with preset value load module, processing module; Described preset value load module is used to import the standard feature value of bad number of spots; Described processing module is calculated the actual characteristic value of bad number of spots according to described video data, and with the contrast of described standard feature value, when the actual characteristic value eigenwert that is above standard, then export comparing result; Described prewarning unit generates the early warning signal data, and sends early warning according to comparing result.
Be applied to example, in the bad point of the described LED screen monitor and early warning system, described prewarning unit comprises an alarm module and an indicating module, and described alarm module sends alerting signal, and described indicating module sends indicator signal.
Be applied to above-mentioned each example, in the bad point of the described LED screen monitor and early warning system, described indicating module comprises some indication submodules, is separately positioned on each cell board of described target LED display.
Be applied to above-mentioned each example, in the bad point of the described LED screen monitor and early warning system, described processing module comprises analyzes submodule and contrast submodule, described analysis submodule is used to analyze the described video data of each pixel, determine whether each pixel is bad point, and the quantity according to bad point generates described actual characteristic value; Described contrast submodule is used to receive described actual characteristic value and described standard feature value, contrasts both, the output comparing result.
Be applied to above-mentioned each example, in the bad point of the described LED screen monitor and early warning system, also comprise adjustment unit, described adjustment unit is used for the performance parameter according to the target LED display, adjusts the brightness of target LED display
Be applied to above-mentioned each example, in the bad point of the described LED screen monitor and early warning system, also comprise described target LED display, described detecting unit is fixedly installed on the described target LED display.
Adopt such scheme, the present invention is by actual characteristic value and the contrast of standard feature value with bad number of spots of target LED display, when the actual characteristic value eigenwert that is above standard, then send early warning, thereby each bad point is changed, when the bad point of LED display actual characteristic value reaches certain numerical value and the whole screen that influences LED display when showing visual effect, by early warning each bad point is changed, for example, can monitor the bad number of spots of each module of forming the target LED display, when the bad point of a certain module reaches some, carry out early warning, thereby can this module of integral replacing, and, can preferentially adopt the standardized module that has the performance parameter identify unit to change, thereby the convenient standardized module of adjusting, make the brightness of standardized module consistent with the target display screen, thereby make the target display screen after the replacing show homogeneous, display effect is good, and, make and change the difficulty reduction, simultaneously, the repair and replacement cost is relatively low.
Description of drawings
Fig. 1 is a kind of schematic flow sheet of method of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1
As shown in Figure 1, present embodiment provides the bad point of a kind of LED screen monitoring and pre-alarming method, the bad point of described LED screen monitoring and pre-alarming method is used for the bad some situation of monitoring objective LED display, and send early warning, make the staff can find bad point, and each bad point handled, avoid the demonstration visual effect of the whole screen of the bad described LED display of some influence.
The standard feature value of bad number of spots of target LED display at first, is set; Described standard feature value is relevant with bad number of spots.The standard feature value of bad point data of each pixel of the LED display that will monitor promptly is set, as, described standard feature value can for, in the same module of forming the target LED display, allow the evil idea of the pixel value of counting; Perhaps, described standard feature value can for, the continuous evil idea that each module allows in the described LED display value of counting, described evil idea count value or the continuously bad value of counting, can be provided with according to actual needs, as according to each bad number of spots, or each continuous bad number of spots is to the whole screen demonstration visual effect setting of described LED display, whether promptly according to bad number of spots human eye is watched causes visual impact to set, the eigenwert if the quantity of each bad point or continuous quantity are above standard, then show, should change each bad some place module, in order to avoid influence the visual effect that eye is watched.For example, each bad number of spots can be set at one, two, three, five or the like, and each continuous bad number of spots can be set to two, three, four, five, six or the like.For example,,, for example before delivery detects, the standard feature value of bad number of spots of target LED display is set, for example, is made as 5,12,17,21,26 or the like according to the different application demand of display screen by PC, display screen main control unit or remote control equipment.
Then, detect the video data of described each pixel of target LED display; For example, the plurality of detection subelement can be set, detect the video data of each pixel in the described target LED display by each detection sub-unit respectively; Each detection sub-unit can be fixedly installed on respectively on the described target LED display, thereby the convenient video data that detects described target LED display, wherein, each module of forming the target LED display can corresponding one or more detection sub-unit, and each detection sub-unit can corresponding one or more pixels.For example, receive and detect instruction, send to the target LED display, collect each pixel video data of its feedback by PC, display screen main control unit or remote control equipment; Perhaps, by PC, display screen main control unit, remote control equipment, the control detection device, for example camera detects each pixel of target LED display, obtains each pixel video data.
Perhaps, detected the video data of described each pixel of target LED display after, also according to described video data, determine whether each pixel is bad point.For example, according to current value or magnitude of voltage or electrical signal data or the like of each pixel in the described video data, thereby can determine whether each pixel is bad point.For example, and one pre-set brightness value and carry out brightness contrast,, think that then it belongs to bad point when certain pixel continues certain period or all is lower than when pre-seting brightness value in the minimum brightness value of several time points.
Perhaps, after whether definite each pixel is bad point, also determine the position of each bad point in described target LED display.For example, video data by detected each bad point, again according to the composition structured data of described target LED display, described composition structured data comprises the arranging and the interconnective structured data of each pixel of composition, each row and each row pixel of each pixel of described target LED display, thereby determines each bad some position in described target LED display.
Then,, calculate the actual characteristic value of bad number of spots, for example, corresponding calculate in forming described target LED display the quantity of bad point in a certain module according to described video data, perhaps, the corresponding quantity of bad point continuously of calculating in described target LED display.
And the actual characteristic value that also will detect each bad point compares with the standard feature value that sets in advance, and when the actual characteristic value is above standard eigenwert, then exports comparing result; As, can come the actual characteristic value of detected each bad point is compared with the standard feature value that sets in advance by the set handling module, when the actual characteristic value is above standard eigenwert, thus the output comparing result.
And, alarm unit can also be set receive described comparing result, generate the early warning signal data according to described comparing result, and, send early warning according to described early warning signal data, thereby remind the staff, the actual characteristic value of each bad point of described target LED display surpasses default standard feature value, thereby reminds the staff to change each bad some place module.
And, after sending the warning early warning signal, also indicate the position of each bad point, for example, a pilot lamp is set forming on each module of described target LED display, when the evil idea of this module is counted value when counting value greater than the standard that is provided with is bad, perhaps, when the continuous bad number of spots of module is counted value above default standard is bad continuously, the pilot lamp that is arranged on this module sends indicator signal, as lights, perhaps flicker, perhaps send other distinct color etc., by described pilot lamp, thereby can indicate each bad some position of this module, promptly each bad some place module is in position of described target LED display, thereby conveniently find bad point module, convenient for maintaining is changed.
And for example, after this, the module at the bad point of each of the eigenwert that the actual characteristic value can also be above standard place adopts standardized module to change.
Described standardized module refers to, and adopts the LED lamp of the same class of beam split color scanner to make, and, have and make the standardized module that has the performance parameter identify unit.In process of production, according to the material difference of LED wafer, can make the LED of different colours, the LED of different colours is produced respectively in batches, and, adopt identical encapsulation, be made into the LED of identical shaped size after, with each LED of same color pass through adopt the beam split color scanner to carry out stepping, promptly can obtain the LED of different class, the LED of identical class has identical brightness, same color, same package, identical shaped and big or small, and consistent wavelength.
By adopting the LED light emitting diode of same class, can make each LED of each module of replacing have identical performance parameter, module shows homogeneous, display effect is good, and, can be according to each performance parameter of described identify unit, adjust the brightness of described standardized module, because described standardized module has an identical performance parameter, therefore, can the whole brightness of adjusting described standard module, make it reach consistent with the brightness of target LED display far away, thereby make the target LED display show homogeneous, make the demonstration visual effect of target LED display better
Embodiment 2
Corresponding above-mentioned each example, present embodiment provides the bad point of a kind of LED screen monitor and early warning system, the bad point of described LED screen monitor and early warning system is used for the bad some situation of monitoring objective LED display, and send early warning, make the staff can find bad point, and each bad point handled, avoid the described LED display of bad some influence to show visual effect.
The bad point of described LED screen monitor and early warning system comprises detecting unit, control module, prewarning unit and adjustment unit.
Wherein, described detecting unit is provided with the plurality of detection subelement, be used for detecting respectively the video data of each pixel of target LED display, as, the corresponding one or more detection sub-unit of each module of forming described target LED display, each detection sub-unit can corresponding one or more pixels, are used for the corresponding video data that detects each pixel on each module.
For example, each detection sub-unit can fixedly install respectively on the described target LED display, thus the convenient detection that detects the video data of described target LED display, and, detected each video data is sent to described control module.
Described control module is provided with preset value load module and processing module.
Wherein, described preset value load module is used to import the standard feature value of each bad number of spots; As, described standard feature value can for, in the same module of forming the target LED display, allow the evil idea of the pixel value of counting; Perhaps, described standard feature value can for, the continuous evil idea that each module point allows in the described LED display value of counting, described evil idea count value or the continuously bad value of counting, can be provided with according to actual needs, as according to each bad number of spots, or each continuous bad number of spots is to the whole screen demonstration visual effect setting of described LED display, whether promptly according to bad number of spots human eye is watched causes visual impact to set, the eigenwert if the quantity of each bad point or continuous quantity are above standard, then show, should change each bad some place module, in order to avoid influence the visual effect that eye is watched.For example, each bad number of spots can be set at one, two, three, five or the like, and each continuous bad number of spots can be set to two, three, four, five, six or the like.
Described processing module is connected with each detection sub-unit, receive the described video data of each detection sub-unit, according to described detection data, calculate the actual characteristic value of bad number of spots, as, corresponding calculate in forming described target LED display on a certain module in the quantity of bad point, perhaps, the corresponding quantity of calculating bad continuously point in a certain module of described target LED display, and generate the actual characteristic value of bad number of spots, and, the actual characteristic value and the standard feature value that sets in advance of detected each bad point compared, when the actual characteristic value eigenwert that is above standard, then export comparing result to described prewarning unit.
For example, described processing module comprises analyzes submodule and contrast submodule, wherein, described analysis submodule receives described video data, and, described video data is analyzed, thereby whether each pixel of determining described video data correspondence is bad point, as, can be according to the current value of each pixel, magnitude of voltage, electrical signal data waits to determine whether each pixel is bad point, thereby quantity and its distribution situation according to each bad point, as, its distribution situation can be the bad some distribution situation on each described module, perhaps, each is the situation of some continuous distribution badly, generates the actual characteristic value of described target LED display; Described contrast submodule compares described actual characteristic value and described standard feature value, contrasts both, when the actual characteristic value eigenwert that is above standard, then exports comparing result to described prewarning unit.
Described prewarning unit is connected with described processing module, receives described comparing result, and, according to described comparing result, generate the early warning signal data, and send early warning according to described early warning signal data.
For example, described prewarning unit comprises an alarm module and an indicating module, and wherein, described alarm module is used for sending warning according to described early warning signal data, and alarm module is an alarm device or with loudspeaker, warning is used to sound as described; And described indicating module is used for sending indicator signal according to described early warning signal data, as, described indicating module is set to a pilot lamp, brightens or glimmers or become other distinct color by pilot lamp and send indicator signal.
Perhaps, some indication submodules can also be set, be separately fixed on the described target LED display, for example, on each module of forming described target LED display, a pilot lamp is set, when the actual evil idea of this module is counted value or the continuously bad value of counting when counting value greater than default standard is bad, the pilot lamp that is arranged on this module sends indicator signal, by described pilot lamp, value or its bad continuously value of counting surpass default criterion numeral value thereby the evil idea that can indicate this module is counted, and, described each indicating module can determine to take place the module of bad point fast, thereby remind the staff, in time described module is changed, avoid influencing the integral body demonstration visual effect of described target LED display because of changing the bad point of module; Make the replacing difficulty lower, and the repair and replacement cost is lower.
And described adjustment unit is used for the performance parameter according to the target LED display, adjusts the brightness of target LED display.
For example, when described actual characteristic value is above standard eigenwert, then need to change the module at each bad some place, when changing the module at each bad some place, preferentially adopt standardized module to change.
Described standardized module refers to, and adopts the LED lamp of the same class of beam split color scanner to make, and, have and make the standardized module that has the performance parameter identify unit.In process of production, according to the material difference of LED wafer, can make the LED of different colours, the LED of different colours is produced respectively in batches, and, adopt identical encapsulation, be made into the LED of identical shaped size after, with each LED of same color pass through adopt the beam split color scanner to carry out stepping, promptly can obtain the LED of different class, the LED of identical class has identical brightness, same color, same package, identical shaped and big or small, and consistent wavelength.
By adopting the LED light emitting diode of same class, can make each LED of each module of replacing have identical performance parameter, module shows homogeneous, display effect is good, and, can be according to each performance parameter of described identify unit, adjust the brightness of described standardized module, because described standardized module has an identical performance parameter, therefore, can the whole brightness of adjusting described standard module, make it reach consistent with the brightness of target LED display far away, thereby make the target LED display show homogeneous, make the demonstration visual effect of target LED display better.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection domain of claims of the present invention.
Claims (10)
1. the bad point of a LED screen monitoring and pre-alarming method is characterized in that, may further comprise the steps:
A, the standard feature value of bad number of spots of target LED display is set;
The video data of b, each pixel of detection target LED display;
C, according to video data, calculate the actual characteristic value of bad number of spots;
D, actual characteristic value and standard feature value are compared,, then export comparing result when the actual characteristic value eigenwert that is above standard;
E, according to comparing result, generate the early warning signal data and also send early warning.
2. the bad point of LED screen according to claim 1 monitoring and pre-alarming method, it is characterized in that, behind step b, execution in step b1 also: according to described video data, determine whether each pixel is bad point, and, determine the position of each bad point in described target LED display, behind step e, go back execution in step e1: the position of indicating each bad point.
3. the bad point of LED screen according to claim 3 monitoring and pre-alarming method, it is characterized in that, behind the step e, go back execution in step f: the LED lamp of selecting the same class of beam split color scanner for use, preparation has the standardized module of performance parameter identify unit, adopts standardized module to change the module at each bad some place.
4. the bad point of LED screen according to claim 4 monitoring and pre-alarming method is characterized in that, behind the execution in step f, goes back execution in step g: according to each performance parameter of described identify unit, adjust the brightness of described standardized module.
5. the bad point of a LED screen monitor and early warning system is characterized in that, comprises detecting unit, control module and prewarning unit;
Described detecting unit is provided with the plurality of detection subelement, is used for detecting respectively the video data of each pixel of target LED display;
Described control module is provided with preset value load module, processing module;
Described preset value load module is used to import the standard feature value of bad number of spots;
Described processing module is calculated the actual characteristic value of bad number of spots according to described video data, and with the contrast of described standard feature value, when the actual characteristic value eigenwert that is above standard, then export comparing result;
Described prewarning unit generates the early warning signal data, and sends early warning according to comparing result.
6. the bad point of LED screen according to claim 5 monitor and early warning system is characterized in that described prewarning unit comprises an alarm module and an indicating module, and described alarm module sends alerting signal, and described indicating module sends indicator signal.
7. the bad point of LED screen according to claim 6 monitor and early warning system is characterized in that described indicating module comprises some indication submodules, is separately positioned on each cell board of described target LED display.
8. the bad point of LED screen according to claim 7 monitor and early warning system, it is characterized in that, described processing module comprises analyzes submodule and contrast submodule, described analysis submodule is used to analyze the described video data of each pixel, determine whether each pixel is bad point, and the quantity according to bad point generates described actual characteristic value; Described contrast submodule is used to receive described actual characteristic value and described standard feature value, contrasts both, the output comparing result.
9. the bad point of LED screen according to claim 7 monitor and early warning system is characterized in that it also comprises an adjustment unit, and described adjustment unit is used for the performance parameter according to the target LED display, adjusts the brightness of target LED display.
10. according to the bad point of the arbitrary described LED screen of claim 5 to 9 monitor and early warning system, it is characterized in that also comprise described target LED display, described detecting unit is fixedly installed on the described target LED display.
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