CN102036444A - Method and device for removing current failure of LED lamp points - Google Patents
Method and device for removing current failure of LED lamp points Download PDFInfo
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Abstract
The invention discloses a method and a device for removing the current failure of light-emitted diode (LED) lamp points. The method comprises the following steps of: A, setting current data unit tables corresponding to the LED lamp points in an external LED screen one by one, and inputting standard current data of each LED lamp point; B, storing the current data unit tables; C, detecting actual current data during the operation of a certain LED lamp point; D, contrasting the actual current data of the LED lamp point to the standard current data corresponding to the LED lamp point in the current data unit tables to generate a difference contrast value, judging whether the difference contrast value is greater than a preset value or not, and if the difference contrast value is greater than the preset value, executing a step E; and E, adjusting the input current of the LED lamp point according to the standard current data of the LED lamp point in the current data unit tables, wherein the steps A and B are preset steps, and the steps C, D and E are adjustment steps; and the device corresponds to the method. By the device and the method, the operating current of each LED lamp point can be controlled within the allowable range of standard current data values, so that the operating current of each LED lamp point is stable and the display effect is good.
Description
Technical field
The present invention relates to lighting device, particularly relate to the device of a kind of LED lamp point current failure elimination methods and its correspondence.
Background technology
Along with large-scale activities such as World Expo, the Asian Games holding in China, for Chinese LED industry provides good display platform, LED is presented at large-scale activity and more important role has been brought into play in important events, so very important in screen reliability of applying such as the LED in large-scale activity, important place etc. and stability.
In the prior art, in the fault of LED lamp point, most of LED lamp is put dead lamp owing to the electric current instability or electric current is too high causes, each LED lamp point is when electric current is unstable, and the demonstration of its LED lamp point is unstable equally, and fault takes place to show easily, as dodge screen, blank screen etc., thereby influence display effect.LED lamp point is when electric current is too high, and then LED lamp point burns out easily, and, can make other coupled electronic devices and components because short circuit and cisco unity malfunction.
Therefore, there is defective in prior art, needs to improve.
Summary of the invention
Technical problem to be solved by this invention is, provide a kind of operating current of each LED lamp point that can make to be controlled in the scope of normalized current data value permission, each LED lamp point operating current is stable, the LED lamp point current failure elimination methods that display effect is good, and with the corresponding device of this method.
Technical scheme of the present invention is as follows: a kind of LED lamp point current failure elimination methods wherein, pre-sets step: each LED lamp is put current data cell list one to one in A, setting and the external LED screen, imports the normalized current data of each LED lamp point; B, the described current data cell list of storage; Set-up procedure: C, the actual current data when detecting a certain LED lamp point work; D, its corresponding normalized current data in its actual current data and the described current data cell list being compared, generate the difference reduced value, whether judge it greater than a preset value, is execution in step E then; Wherein, described difference reduced value is meant, the ratio of a difference and normalized current data, and described difference is the difference of its actual current data and its normalized current data; E, according to the normalized current data of this LED lamp point in the described current data cell list, adjust the input current of this LED lamp point.
Be applied to technique scheme, in the described method, described set-up procedure may further comprise the steps: C1, each the actual current data when detecting each row or respectively being listed as the work of LED lamp point; D1, respectively with each row or respectively be listed as normalized current data corresponding in LED lamp point actual current data separately and the described current data cell list and compare, generate the difference reduced value of each LED lamp point, whether judging it respectively greater than a preset value, is execution in step E1 then; E1, according to the normalized current data of each corresponding LED lamp point in the described current data cell list, adjust the input current of each corresponding LED lamp point.
Be applied to above-mentioned each technical scheme, in the described method, described set-up procedure may further comprise the steps: C2, each the actual current data when detecting each LED lamp point work of full screen; D2, respectively normalized current data corresponding in each LED lamp point actual current data separately and the described current data cell list being compared, generate the difference reduced value of each LED lamp point, whether judge it respectively greater than a preset value, is execution in step E2 then; E2, according to the normalized current data of each corresponding LED lamp point in the described current data cell list, adjust the input current of each corresponding LED lamp point.
Be applied to above-mentioned each technical scheme, in the described method, before execution in step A, execution in step A0 also: according to the ranks position of each lamp point place LED screen, set its coordinate figure, and, in the steps A, set described current data cell list according to the coordinate figure of each lamp point.
Be applied to above-mentioned each technical scheme, in the described method, described preset value is 1%, 1.5%, 2%, 2.5% or 3%.
Whether be applied to above-mentioned each technical scheme, in the described method, step C: detecting each LED lamp point and leak electricity, is then to export electric leakage signal if also carrying out following steps C10.
Corresponding to above-mentioned each technical scheme, a kind of LED lamp point current failure remover wherein, comprises and sets input module, memory module, detection module, analysis module and adjusting module; Described setting input module is used for setting with each LED lamp of external LED screen puts current data cell list one to one, and the normalized current data of importing each LED lamp point are to described current data cell list; Described memory module is connected with described setting input module, is used to store described current data cell list; Described detection module, the actual current data when being used to detect each LED lamp point work; Described analysis module is used for each normalized current data that each actual current data are corresponding with described current data cell list and compares, and generates the difference reduced value, and selects the difference reduced value of output greater than a preset value; Wherein, described difference reduced value is meant, the ratio of a difference and normalized current data, and described difference is the difference of its actual current data and its normalized current data; Described adjusting module is used to receive each difference reduced value, according to the normalized current data of corresponding LED lamp point in the described current data cell list, adjusts the input current of corresponding LED lamp point.
Corresponding to technique scheme, in the described LED lamp point current failure remover, the one end is connected with the control device of outside, and the other end is connected with the LED screen of outside.
Corresponding to above-mentioned each technical scheme, in the described LED lamp point current failure remover, described detection module also is provided with the detection of electrical leakage submodule, is used for output electric leakage signal when each lamp point electric leakage.
Corresponding to above-mentioned each technical scheme, in the described LED lamp point current failure remover, a leakage switch is set also, is connected with the external control device, be used for according to described electric leakage signal, cut off being connected of described control device and described LED lamp point current failure remover.
Adopt such scheme, the present invention is provided with the corresponding current data cell list of each LED lamp point by the preset value step, and in described current data cell list the corresponding normalized current data of input, thereby make in set-up procedure, each LED lamp point can be according to normalized current Value Data one to one in the described current data cell list, with each actual current data value of detected each LED lamp point correspondence analysis one by one, thereby generate the difference reduced value, and, according to the preset value size, export each difference reduced value, thereby according to each difference reduced value of output, adjust the input current of each corresponding LED lamp point, the operating current of each LED lamp point is controlled in each normalized current numerical value institute permissible error scope of setting, thereby make each LED lamp point operating current stable, the display effect of each LED lamp point is good.
Description of drawings
Fig. 1 is a kind of schematic flow sheet of LED lamp point current failure method for removing among the present invention;
Fig. 2 is a kind of connection diagram of LED lamp point current failure remover among 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 a kind of LED lamp point current failure elimination methods, described method comprises and pre-sets step and set-up procedure, the current failure that can get rid of each LED lamp point by described method, make each LED lamp point before current failure takes place, can in time find to take place the possibility of current failure, thereby the possibility that breaks down is excluded, perhaps, when current failure takes place in each LED lamp point, prevent to result in greater loss, to guarantee making each LED lamp point can be in stable operating state always.
Wherein, the described step that pre-sets comprises: each LED lamp is put current data cell list one to one in first step A, setting and the external LED screen, the quantity of each LED lamp point in promptly shielding according to external LED, and corresponding position is provided with the current data cell list with each LED lamp point one-to-one relationship, wherein, described LED screen is meant various LED displays and various LED lamp decoration screen; And, import the normalized current data of each LED lamp point, described normalized current data can be the optimum current data of each LED lamp point work, can be a concrete numerical value, perhaps, also can be a certain range values; Described current data cell list can be provided with in the control unit of described LED screen by software, also can by with the PC setting of described control unit.
For example, before the current data unit is set, can also be according to the ranks position of each LED lamp point place LED screen, set the coordinate figure of each LED lamp point, thereby by the corresponding coordinate figure of each lamp point, set its pairing described current data cell list, so, can make the setting of described current data cell list simpler, the convenient use.
The second step B, after setting described current data cell list, also store described current data cell list, in order to calling, for example, can be by memory module be set, perhaps be provided with one movably memory store described current data cell list, can also make things convenient for moving and changing of data by removable memory.
Carry out described pre-set step after, also carry out described set-up procedure, comprising: the 3rd step C, actual current data when detecting a certain LED lamp point work, for example, detect in real time in the described LED screen current data of whole LED lamp points or the work of partial L ED lamp point, perhaps, detect in the described LED screen whole LED lamp points or partial L ED lamp point sometime or in sometime section current data; Wherein, can be according to actual needs, by detecting the current data of whole LED lamp point work in the LED screen, can get rid of the current failure of each LED lamp point, perhaps, by detecting the current data of part LED lamp point work in the LED screen, can analyze whether there is current failure or whether has current failure hidden danger of whole LED lamp points, thereby can simplify the operation of each step by representative partial L ED lamp, each step operation is more prone to, also convenient.
Perhaps, can also detect each LED lamp point and whether leak electricity, when having electric leakage as each LED lamp point, then export electric leakage signal, for example, by indicator light, siren generation alarm signal, perhaps, also can export described electric leakage signal to described PC, show by described PC and warn, thereby remind the staff to have the electric leakage accident, should in time handle, avoid taking place critical failure, thereby described LED screen is damaged, perhaps, influence the demonstration of each LED lamp point.
After carrying out the 3rd step C, continue to carry out the 4th step D, its corresponding normalized current data in the actual current data of detected each LED lamp point and the described current data cell list are compared, and, generate the difference reduced value, and judge that whether its described difference reduced value is greater than a preset value, for example, the normalized current data that the actual current of a certain LED lamp point X is corresponding with LED lamp point X in the described current data cell list compare, generate the difference reduced value, and judge that whether its described difference reduced value is greater than a preset value; Wherein, described difference reduced value is meant, the ratio of one difference and normalized current data, described difference is the difference of its actual current data and its normalized current data, for example, the actual current numerical value of LED lamp point X is 10.1mA, and LED lamp point X is 10mA in the normalized current data of described current data cell list, then described difference is 0.1mA, and described difference reduced value is 1%.
Wherein, described preset value is, set according to actual needs, be generally the error amount that relative its normalized current data value of operating current of corresponding LED lamp point is allowed, for example, described preset value is 1%, 1.5%, 2%, 2.5% or 3%, perhaps, described preset value also can be a range values, for example, is 0 to 1%, 0 to 1.5%, 0 to 2%, 0 to 2.5%, 0 to 3% or the like.
When described difference reduced value is less than or equal to described preset value, illustrate that then each LED lamp point is in the metastable operating state, each LED lamp point no current fault then, and, there is not the possibility that current failure takes place.
When described difference reduced value during greater than described preset value, then execution in step the 5th goes on foot E, promptly according to the normalized current data of this LED lamp point in the described current data cell list, adjust the input current of this LED lamp point, for example, can adjust the input current of each LED lamp point by adjusting module is set, wherein, particularly, can adjust the input current of each LED lamp point by resistance is set, perhaps, adjust the input current of each LED lamp point by the voltage of adjusting each LED lamp point input, thereby the input current that makes each LED lamp point is in the current value range of permission, thereby gets rid of the possibility that current failure takes place each LED lamp point.
An example is, in carrying out described set-up procedure, the 3rd step can specifically be carried out C1, promptly be detected each row or each the actual current data when respectively being listed as the work of LED lamp point respectively, actual current data in the time of promptly can detecting each LED lamp point work respectively by branch or apportion, thereby can improve the efficiency of detection, reduce the difficulty that detects; And, the 4th step D1 carries out, respectively with each row or respectively be listed as normalized current data corresponding in LED lamp point actual current data separately and the described current data cell list and compare, thereby can generate each row of each LED lamp point respectively or respectively be listed as pairing difference reduced value, and, judge that respectively whether it is greater than described preset value, when described difference reduced value during greater than described preset value, then carry out the 5th step E1, promptly, adjust the input current of each corresponding LED lamp point according to the normalized current data of each corresponding LED lamp point in the described current data cell list.
Another each example is, in carrying out described set-up procedure, the 3rd step can specifically be carried out C2, each actual current data when detecting each LED lamp point work of full screen, each actual current data when promptly detecting each the LED lamp point work in the LED screen, and the 4th step D2, respectively normalized current data corresponding in each the LED lamp point actual current data separately in the LED screen and the described current data cell list are compared, generate the difference reduced value of each LED lamp point, and then judge that respectively whether it is greater than a preset value, when described difference reduced value during greater than described preset value, then carry out the 5th step E2, according to the normalized current data of each corresponding LED lamp point in the described current data cell list, adjust the input current of each corresponding LED lamp point.So, the operating current state of each LED lamp point in can the complete detection described LED screen, thus can get rid of the current failure of each LED lamp point.
Embodiment 2
As shown in Figure 2, on the basis of above-mentioned each example, present embodiment provides a kind of LED lamp point current failure remover, described LED lamp point current failure remover is corresponding with above-mentioned each routine LED lamp point current failure method, make each LED lamp point before current failure takes place, can in time find to take place the possibility of current failure, thereby the possibility that current failure will take place excludes, perhaps, when current failure takes place in each LED lamp point, prevent to result in greater loss, to guarantee making each LED lamp point can be in stable operating state always.
Wherein, described device comprises setting input module, memory module, detection module, analysis module and adjusting module.
Described setting input module can be used for setting with each LED lamp of external LED screen puts current data cell list one to one, and, can also be after setting described current data cell list, the normalized current data of each LED lamp point are input in the described current data cell list.
For example, can be according to the quantity of each LED lamp point in the external LED screen, with and corresponding position set current data cell list with each LED lamp point one-to-one relationship, and, import the normalized current data of each LED lamp point, described normalized current data can be the optimum current data of each LED lamp point work, can be a concrete numerical value, perhaps, also can a certain range values.
And for example, can also be according to the ranks position of each LED lamp point place LED screen, set the coordinate figure of each LED lamp point, thereby by the corresponding coordinate figure of each lamp point, set its pairing described current data cell list, so, can make the setting of described current data cell list simpler, the convenient use.
And described memory module is connected with described setting input module, and described setting input module is stored in described current data cell list in the described memory module after importing the corresponding normalized current data of each LED lamp point, in order to calling.For example, described memory module can also be set to a memory movably, can also make things convenient for moving and changing of data by removable memory.
Described detection module is connected with the LED screen of outside, the actual current data when being used for detecting each the LED lamp point work of external LED screen.
Wherein, actual current data in the time of can detecting a certain LED lamp point work, for example, the current data of whole LED lamp points or the work of partial L ED lamp point in the described LED screen of detection in real time, perhaps, detect in the described LED screen whole LED lamp points or partial L ED lamp point sometime or in sometime section current data; Wherein, can be according to actual needs, by detecting the current data of whole LED lamp point work in the LED screen, can get rid of the current failure of each LED lamp point, perhaps, by detecting the current data of part LED lamp point work in the LED screen, LED lamp that can representative part analyzes whether there is current failure or whether has current failure hidden danger of whole LED lamp points, thereby can simplify the operation of each step, each step operation is more prone to, also convenient.
Perhaps, described detection module can also be provided with the detection of electrical leakage submodule, and whether described detection of electrical leakage submodule can be used for detecting when each LED lamp point and leak electricity, as detects and then export electric leakage signal when a certain LED lamp point generation is leaked electricity.
For example, can send alarm signal, perhaps by with described detection of electrical leakage submodule and an indicator light or with siren, also can export described electric leakage signal to described PC, warn by described PC demonstration, thereby remind the staff to have the electric leakage accident, should in time handle, avoid taking place critical failure, thereby described LED screen is damaged, perhaps, influence the demonstration of each LED lamp point.
Described detection module sends to described analysis module with the actual current data of detected each LED lamp point work, described analysis module receives described actual current data, and, call the normalized current data of each LED lamp point in the described memory module, each corresponding in each actual current data and described current data cell list normalized current data are compared, generate the difference reduced value, and the difference reduced value of selecting to export greater than a preset value arrives described adjusting module; Wherein, described difference reduced value is meant, the ratio of a difference and normalized current data, and described difference is the difference of its actual current data and its normalized current data.
For example, the normalized current data that the actual current of a certain LED lamp point X is corresponding with LED lamp point X in the described current data cell list compare, and generate the difference reduced value, and judge that whether its described difference reduced value is greater than a preset value; Wherein, described difference reduced value is meant, the ratio of one difference and normalized current data, described difference is the difference of its actual current data and its normalized current data, for example, the actual current numerical value of LED lamp point X is 10.1mA, and LED lamp point X is 10mA in the normalized current data of described current data cell list, then described difference is 0.1mA, and described difference reduced value is 1%.
Wherein, described preset value is, set according to actual needs, be generally the error amount that relative its normalized current data value of operating current of corresponding LED lamp point is allowed, for example, described preset value is 1%, 1.5%, 2%, 2.5% or 3%, perhaps, described preset value also can be a range values, for example, is 0 to 1%, 0 to 1.5%, 0 to 2%, 0 to 2.5%, 0 to 3% or the like.
When described difference reduced value is less than or equal to described preset value, illustrate that then each LED lamp point is in the metastable operating state, each LED lamp point no current fault then, and, there is not the possibility that current failure takes place.
Or described analysis module can also be provided with a preset value input, brings in by described preset value input the described difference reduced value of selecting output is set, thereby described difference reduced value can be set according to actual needs.
Described adjusting module receives each difference reduced value, and, normalized current data according to this LED lamp point in the described current data cell list, adjust the input current of this LED lamp point, for example, can adjust the input current of each LED lamp point by resistance is set, perhaps, adjust the input current of each LED lamp point by the voltage of adjusting each LED lamp point input, thereby the input current that makes each LED lamp point is in the current value range of permission, thereby gets rid of the possibility that current failure takes place each LED lamp point.
For example, one end of described LED lamp point current failure remover is connected with the control device of outside, and, the other end is connected with the LED screen of outside, can be used to get rid of the stability of electric currents such as the various signals of external control device output and each power supply, thereby described LED screen can be worked under stable electric current environment, and display effect is good.
And for example, described LED lamp point current failure remover also is provided with a leakage switch, described leakage switch is connected with the external control device, is used for according to described electric leakage signal, cuts off that circuit is connected between described LED lamp point current failure remover and the described control device; Thereby prevent that electric leakage from causing each components and parts to burn out.
Perhaps, one early warning module can also be set, described early warning module is connected with described detection module, be used for when electric leakage takes place each lamp point, send electric leakage signal to described early warning module, described early warning module is sent early warning signal according to described electric leakage signal, thereby can in time find electric leakage, and, in time repair described LED lamp point current failure remover.
Need to prove that the mutual combination of above-mentioned each technical characterictic forms each embodiment, should be considered as the scope of specification record of the present invention.
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 range of claims of the present invention.
Claims (10)
1. a LED lamp point current failure elimination methods is characterized in that, comprises the steps;
Pre-set step:
Each LED lamp is put current data cell list one to one in A, setting and the external LED screen, imports the normalized current data of each LED lamp point;
B, the described current data cell list of storage;
Set-up procedure:
C, the actual current data when detecting a certain LED lamp point work;
D, its corresponding normalized current data in its actual current data and the described current data cell list being compared, generate the difference reduced value, whether judge it greater than a preset value, is execution in step E then; Wherein, described difference reduced value is meant, the ratio of a difference and normalized current data, and described difference is the difference of its actual current data and its normalized current data;
E, according to the normalized current data of this LED lamp point in the described current data cell list, adjust the input current of this LED lamp point.
2. method according to claim 1 is characterized in that, described set-up procedure may further comprise the steps:
C1, each the actual current data when detecting each row or respectively being listed as the work of LED lamp point;
D1, respectively with each row or respectively be listed as normalized current data corresponding in LED lamp point actual current data separately and the described current data cell list and compare, generate the difference reduced value of each LED lamp point, whether judging it respectively greater than a preset value, is execution in step E1 then;
E1, according to the normalized current data of each corresponding LED lamp point in the described current data cell list, adjust the input current of each corresponding LED lamp point.
3. method according to claim 1 is characterized in that, described set-up procedure may further comprise the steps:
C2, each the actual current data when detecting each LED lamp point work of full screen;
D2, respectively normalized current data corresponding in each LED lamp point actual current data separately and the described current data cell list being compared, generate the difference reduced value of each LED lamp point, whether judge it respectively greater than a preset value, is execution in step E2 then;
E2, according to the normalized current data of each corresponding LED lamp point in the described current data cell list, adjust the input current of each corresponding LED lamp point.
4. method according to claim 1 is characterized in that, before execution in step A, execution in step A0 also: according to the ranks position of each lamp point place LED screen, set its coordinate figure, and, in the steps A, set described current data cell list according to the coordinate figure of each lamp point.
5. method according to claim 1 is characterized in that, described preset value is 1%, 1.5%, 2%, 2.5% or 3%.
6. whether method according to claim 1, step C also carries out following steps C10: detecting each LED lamp point and leak electricity, is then to export electric leakage signal if is characterized in that.
7. a LED lamp point current failure remover is characterized in that, comprises setting input module, memory module, detection module, analysis module and adjusting module;
Described setting input module is used for setting with each LED lamp of external LED screen puts current data cell list one to one, and the normalized current data of importing each LED lamp point are to described current data cell list;
Described memory module is connected with described setting input module, is used to store described current data cell list;
Described detection module, the actual current data when being used to detect each LED lamp point work;
Described analysis module is used for each normalized current data that each actual current data are corresponding with described current data cell list and compares, and generates the difference reduced value, and selects the difference reduced value of output greater than a preset value; Wherein, described difference reduced value is meant, the ratio of a difference and normalized current data, and described difference is the difference of its actual current data and its normalized current data;
Described adjusting module is used to receive each difference reduced value, according to the normalized current data of corresponding LED lamp point in the described current data cell list, adjusts the input current of corresponding LED lamp point.
8. LED lamp point current failure remover according to claim 7 is characterized in that, the one end is connected with the control device of outside, and the other end is connected with the LED screen of outside.
9. LED lamp point current failure remover according to claim 8 is characterized in that described detection module also is provided with the detection of electrical leakage submodule, is used for output electric leakage signal when each lamp point electric leakage.
10. LED lamp point current failure remover according to claim 9, it is characterized in that, a leakage switch also is set, be connected with the external control device, be used for according to described electric leakage signal, cut off being connected of described control device and described LED lamp point current failure remover.
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