An intelligent control system for an LED lamp string light source

Abstract

The present invention discloses an intelligent control system for an LED lamp string light source, which relates to the technical field of LED light sources. The present invention includes a plurality of LED light sources, which are connected pairwise in sequence, and includes a recording module, a screening module, a bridging module, a power supply module, n controllers and a number of control nodes. The control nodes are arranged between two adjacent LED light sources. The power transmission end of the power supply module is connected to the power consumption end of the bridging module through a wire. The power transmission end of the bridging module is respectively connected to the power consumption end of each controller through a wire. The power transmission end of the controller is connected in parallel with the power consumption end of each LED light source through a wire. By setting the controller and the control node for regional control, voltage compensation and luminous flux compensation are carried out for each LED light source, avoiding the voltage drop of the remote LED light source. By setting the recording module and executing the feature extraction program, the position of the faulty LED light source can be directly located, and the operating state of each LED light source can be intuitively obtained.

Description

Technical Field

[0001] The present invention relates to the technical field of LED light source, and particularly to an intelligent control system for an LED lamp string light source. Background Art

[0002] The LED light source is a light-emitting diode, which has the characteristics of being small and flexible, having various colors, fast response speed, and being easy to control. It is widely used in the fields of lighting and decoration. The LED lamp string light source is a linear lighting device composed of multiple LED lamp beads. There are also various types of LED light strips, including rigid light strips and flexible light strips. The rigid light strip usually uses an aluminum substrate and has good heat dissipation performance, and is suitable for use in occasions with high stability requirements. The flexible light strip has flexibility and can be bent and deformed, and is suitable for irregular installation surfaces.

[0003] The current LED lamp string light source control system has the following technical defects: 1. The light source control system can only achieve constant current power supply for the LED lamp string. When the length of the LED lamp string is too long, the voltage drop will occur in the LED lamp string light source at the far end, resulting in a decrease in the luminous flux of the LED light source and unable to achieve the expected lighting effect; 2. The light source control system cannot independently record the data parameters during the operation of the LED light source. When a certain light source of the LED lamp string fails, it is impossible to directly locate the position of the faulty LED light source, and at the same time, it is impossible to obtain the recorded parameters of the faulty LED light source, which is not conducive to analyzing the cause of the LED light source failure. Therefore, avoiding the voltage drop of the far-end LED light source and independently recording the parameter information of the LED light source are technical problems that need to be solved by those skilled in the art. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides an intelligent control system for an LED lamp string light source, which solves the problems raised in the above background art.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: An intelligent control system for an LED lamp string light source, including a number of LED light sources, the LED light sources are connected pairwise in sequence, and includes a recording module, a screening module, a bridging module, a power supply module, n controllers, and a number of control nodes. The control nodes are arranged between two adjacent LED light sources. The power transmission end of the power supply module is connected to the power consumption end of the bridging module through a wire. The power transmission end of the bridging module is respectively connected to the power consumption ends of each controller through wires. The power supply module provides electrical energy to each controller through the bridging module. The power transmission end of the controller is connected in parallel with the power consumption ends of each LED light source through a wire. The controller is used to provide electrical energy to the connected LED light sources and control the output voltage and output current , the output terminals of m control nodes are all connected to the input terminal of a single controller, the output terminals of n controllers are all connected to the input terminal of a bridging module, the ports of the bridging module are connected to the ports of a screening module, and the output terminal of the screening module is connected to the input terminal of a recording module;

[0006] The control nodes collect the load parameters of two adjacent led light sources, and the collection frequency of the control nodes is , and the first collection frequency difference between adjacent control nodes is , and the second collection frequency difference between adjacent controllers is , in order to avoid network congestion caused by data transmission, it is necessary to change the second collection frequency difference of each adjacent control node , so as to transmit the collected load parameters to the controller in an orderly manner. The control node transmits the load parameters to the controller, and all controllers transmit the load parameters to the bridging module uniformly. The bridging module forwards the load parameters to the screening module. The screening module presets the unit time as 100 seconds. The screening module executes the feature extraction program in a cycle with the unit time as the period. The screening module executes the feature extraction program to extract feature information from the load parameters. The screening module transmits the extracted feature information to the recording module. The feature information saved by the recording module is used for reading. The feature information records the operating status of each led light source and the fault points of the led light source. By setting the recording module and executing the feature extraction program, the control system can autonomously extract effective feature information from the operating records of the led light source, directly locate the position of the faulty led light source, and intuitively obtain the operating status of each led light source, which is convenient for analyzing the health status and fault causes of the led light source;

[0007] The power supply module delivers electric energy to the bridging module through wires. The bridging module delivers electric energy to each controller through wires. The controller delivers electric energy to each led light source through wires. The screening module executes an adjustment program to adjust the output voltage of each controller , and synchronously adjusts the output current of the led light sources connected to each controller ;

[0008] The load parameters include the address code, initial voltage u, initial current i, initial luminous flux l, and initial temperature t of each led light source. The address code is used to locate the specific position of each led light source.

[0009] Further, when the feature extraction program is executed, the screening module uses the collection frequency of the control node , the first collection frequency difference of the control node and the second collection frequency difference of the controller Based on this, the initial voltage u, initial current i, initial luminous flux l, and initial temperature t are rounded to two decimal places to obtain the reference voltage u1, reference current i1, reference luminous flux l1, and reference temperature t1;

[0010] The screening module counts the first sequence obtained by arranging the reference voltage u1 in descending order of the mode, counts the second sequence obtained by arranging the reference current i1 in descending order of the mode, counts the third sequence obtained by arranging the reference luminous flux l1 in descending order of the mode, and counts the fourth sequence obtained by arranging the reference temperature t1 in descending order of the mode. The front parts of the first sequence, second sequence, third sequence, and fourth sequence can intuitively reflect the load parameters with the highest occurrence frequencies. Data similar to the load parameters has no reference value. Therefore, in the feature extraction program, the load parameters without reference value will be deleted to ensure that the recording module has sufficient redundant storage space;

[0011] The screening module presets the threshold digit number p. The screening module extracts the first p digits of the values from the first sequence, second sequence, third sequence, and fourth sequence respectively as the constant set. The constant sets are the voltage constant, current constant, luminous flux constant, and temperature constant in sequence. The screening module presets the classification range g of the constant set. At the end of the first unit time, the threshold digit number p is used to adjust the definition range of the constant set. The larger the definition range, the fewer the effective records. Conversely, the smaller the definition range, the more the effective records saved by the recording module. The threshold digit number p is affected by the total number of acquisition frequencies

[0012] and the total number w of invalid records. The classification range g is used to define the similarity between the load parameters and the constant set. The higher the similarity, the fewer the effective records. Conversely, the lower the similarity, the more the effective records saved by the recording module;

[0013] Furthermore, the acquisition frequency The specific value is obtained by executing the following program:

[0014] The preset acquisition frequency of the screening module The initial value is 50, that is, one acquisition is completed every 50 seconds. The initial voltage u that does not belong to the classification range g in the total number of invalid times is marked as the abnormal voltage u2, and the number of records of the abnormal voltage u2 is counted , the initial current i that does not belong to the classification range g in the total number of invalid times is marked as the abnormal current i2, and the number of records of the abnormal current i2 is counted , the initial luminous flux l that does not belong to the classification range g in the total number of invalid times is marked as the abnormal luminous flux l2, and the number of records of the abnormal luminous flux l2 is counted , the initial temperature t that does not belong to the classification range g in the total number of invalid times is marked as the abnormal temperature t2, and the number of records of the abnormal temperature t2 is counted ;

[0015] Within each unit of time, the screening module calculates the acquisition frequency for the next unit of time according to the formula group The specific value of The screening module transmits the acquisition frequency to each control node sequentially through the bridging module and the controller. The control node acquires the initial voltage u, initial current i, initial luminous flux l, and initial temperature t at the acquisition frequency By adjusting the acquisition frequency, the amount of load parameter data collected can be changed, thereby indirectly adjusting the computing amount of the screening module and avoiding excessive invalid records from increasing the difficulty of extracting valid records.

[0016] Furthermore, the specific values of the first acquisition frequency difference and the second acquisition frequency difference are obtained by executing the following program:

[0017] The screening module obtains the address code of each led light source from the load parameters of the control node. The address code is the coordinate of the led light source, which is used to record the distance d1 between each led light source and the controller and the distance d2 between the controller and the bridging module. The screening module can locate the specific position of the led light source through d1 and d2;

[0018] Calculate the first acquisition frequency difference , the screening module calculates the first acquisition frequency difference for the next time unit according to the formula ;

[0019] Calculate the second acquisition frequency difference , the screening module calculates the second acquisition frequency difference for the next time unit according to the formula ;

[0020] The screening module will use the first acquisition frequency difference​​​ and the second acquisition frequency difference are transmitted to each controller through the bridging module, and the controller transmits the first acquisition frequency difference to each control node. The acquisition frequencies of the connected control nodes are adjusted between adjacent controllers according to the second acquisition frequency difference . Based on the second acquisition frequency difference , the acquisition frequencies of adjacent control nodes are further adjusted according to the first acquisition frequency difference ; In order to avoid network congestion caused by data transmission, it is necessary to change the second acquisition frequency difference of each adjacent control node , so as to transmit the collected load parameters to the controller in an orderly manner. Similarly, the load parameters received by each controller are transmitted to the screening module through the bridging module in an orderly manner according to the first acquisition frequency difference .

[0021] Furthermore, when the adjustment program is executed, the screening module adds up the initial voltages u of the control nodes connected to each controller and averages them to obtain the local voltage , and the screening module adds up the local voltages corresponding to each controller and averages them to obtain the overall voltage . The screening module adds up the initial currents i of the control nodes connected to each controller and averages them to obtain the local current , and the screening module adds up the local currents corresponding to each controller and averages them to obtain the overall current ;

[0022] The screening module adds up the initial luminous fluxes l of the control nodes connected to each controller and averages them to obtain the local luminous flux , and the screening module adds up the local luminous fluxes corresponding to each controller and averages them to obtain the overall luminous flux ;

[0023] The screening module establishes a first coordinate system. The screening module calculates the first correlation coefficient k1 of each control node according to the formula . The screening module adds up the first correlation coefficients k1 of the control nodes connected to each controller and averages them to obtain the local correlation coefficient . The screening module inputs the n local correlation coefficients into the first coordinate in ascending order. The screening module inputs the correlation coefficients k1 into the first coordinate system in descending order;

[0024] ​Therefore, the screening module connects each first correlation coefficient k1 in the first coordinate system to obtain a first correlation curve, and connects each local correlation coefficient to obtain a local correlation curve. The screening module takes the intersection point of the first correlation curve and the local correlation curve as the typical value k2;

[0025] Adjust the output voltage of the controller , and the screening module calculates the compensation voltage of each led light source according to the formula The screening module transmits the compensation voltage value to the bridging module. The bridging module retrieves the compensation voltage from the power supply module according to the value of the compensation voltage and transmits the electric energy to the corresponding controller, so that the output voltages between each controller are equal;

[0026] Adjust the output current of the controller , and the screening module calculates the compensation current of each led light source according to the formula The screening module transmits the compensation current value to the bridging module. The bridging module adds the compensation currents of the led light sources connected to each controller to obtain a local compensation current value. The bridging module retrieves the electric energy of the local compensation current from the power supply module and transmits it to the controller. The controller adjusts the output current of each led light source and then transmits the electric energy to the corresponding led light source, so that the adjusted luminous fluxes of the led light sources between different controllers are equal , and the adjustment program stops. By setting the controller and the control node to control in different regions, voltage compensation and luminous flux compensation are performed on each led light source, avoiding the voltage drop of the remote led light source, making the luminous fluxes of each led light source balanced and unified, and improving the lighting effect of the led lamp string.

[0027] Further, the threshold number p and the classification range g are obtained by executing the following program:

[0028] The screening module preset the initial value of the threshold number p to 5, and the initial value of the preset classification range g to ±0.3. The screening module calculates and takes the integer to obtain the threshold number p of the next time unit according to the formula ;

[0029] The screening module calculates the classification range g of the next time unit according to the formula .

[0030] The present invention has the following beneficial effects:

[0031] ​1. By setting up the controller and control nodes for zonal control, voltage compensation and luminous flux compensation are carried out for each LED light source, avoiding the voltage drop of the remote LED light source, making the luminous flux of each LED light source uniform, and improving the lighting effect of the LED lamp string.

[0032] 2. By setting up the recording module and executing the feature extraction program, the control system can independently extract effective feature information from the operation records of the LED light sources, directly locate the position of the faulty LED light source, and intuitively obtain the operation status of each LED light source, facilitating the analysis of the cause of the fault.

[0033] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. Brief Description of the Drawings

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0035] Figure 1 It is a block diagram of an intelligent control system for an LED lamp string light source of the present invention. Detailed Embodiments

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0037] Please refer to Figure 1 , the present invention provides a technical solution: an intelligent control system for an LED lamp string light source, including a number of LED light sources, the LED light sources are connected pairwise in sequence, including a recording module, a screening module, a bridging module, a power supply module, n controllers and a number of control nodes. The control nodes are arranged between two adjacent LED light sources. The power transmission end of the power supply module is connected to the power consumption end of the bridging module through a wire. The power transmission end of the bridging module is respectively connected to the power consumption end of each controller through a wire. The power transmission end of the controller is connected in parallel with the power consumption end of each LED light source through a wire. The output ends of the m control nodes are all connected to the input end of a single controller. The output ends of the n controllers are all connected to the input end of the bridging module. A connection is established between the ports of the bridging module and the ports of the screening module. The output end of the screening module is connected to the input end of the recording module;

[0038] The control node collects the load parameters of two adjacent LED light sources, and the collection frequency of the control node is , and the first collection frequency difference between adjacent control nodes is , and the second collection frequency difference between adjacent controllers is . In order to avoid network congestion caused by data transmission, it is necessary to change the collection frequency difference of each adjacent control node, so as to transmit the collected load parameters to the controller in an orderly manner. The control node transmits the load parameters to the controller, all controllers transmit the load parameters to the bridging module uniformly, the bridging module forwards the load parameters to the screening module, the screening module presets the unit time as 100 seconds, the screening module executes the feature extraction program in a cycle with the unit time as the period, the screening module executes the feature extraction program to extract feature information from the load parameters, the screening module transmits the extracted feature information to the recording module, and the feature information saved by the recording module is used for reading. The feature information records the operating status of each LED light source and the fault points of the LED light source;

[0039] The power supply module delivers electrical energy to the bridging module through wires, the bridging module delivers electrical energy to each controller through wires, the controller delivers electrical energy to each LED light source through wires, and the screening module executes an adjustment program to adjust the output voltage of each controller , and synchronously adjusts the output current of the LED light sources connected to each controller ;

[0040] The load parameters include the address code, initial voltage u, initial current i, initial luminous flux l, and initial temperature t of each LED light source.

[0041] Among them, when the feature extraction program is executed, the screening module uses the collection frequency of the control node , the first collection frequency difference of the control node and the second collection frequency difference of the controller as the basis, and rounds the initial voltage u, initial current i, initial luminous flux l, and initial temperature t to two decimal places to obtain the reference voltage u1, reference current i1, reference luminous flux l1, and reference temperature t1;

[0042] The screening module counts the reference voltage u1 to obtain the first sequence arranged in descending order according to the mode, counts the reference current i1 to obtain the second sequence arranged in descending order according to the mode, counts the reference luminous flux l1 to obtain the third sequence arranged in descending order according to the mode, and counts the reference temperature t1 to obtain the fourth sequence arranged in descending order according to the mode;

[0043] The screening module preset the number of bits p of the threshold value. The screening module extracts the first p digits of the values from the first sequence, the second sequence, the third sequence, and the fourth sequence respectively as the constant value set. The constant value sets are the voltage constant value, the current constant value, the luminous flux constant value, and the temperature constant value in sequence. The screening module preset the classification range g of the constant value set, and the first unit time ends;

[0044] At the beginning of the second unit time, the screening module determines whether the initially collected voltage u, initially collected current i, initially collected luminous flux l, and initially collected temperature t each time belong to the classification range g of the constant value set. If they all belong to the classification range g, the screening module defines the initially collected voltage u, initially collected current i, initially collected luminous flux l, and initially collected temperature t as invalid records and deletes them. The screening module accumulates the total number of invalid records and marks it as w. If any one does not belong to the classification range g, the screening module defines the initially collected load voltage u, initially collected current i, initially collected luminous flux l, and initially collected temperature t as valid records. The screening module saves the valid records and the corresponding address codes of the led light sources together and marks them as characteristic information. The valid records correspond to the operating states of each led light source, and the address codes of the led light sources correspond to the fault points of the led light sources.

[0045] Among them, the acquisition frequency The specific value is obtained by executing the following program:

[0046] The screening module preset the acquisition frequency The initial value is 50, that is, one acquisition is completed in 50 seconds. The initially collected voltage u that does not belong to the classification range g in the total number of invalid times is marked as the abnormal voltage u2 and the number of records of the abnormal voltage u2 is counted , the initially collected current i that does not belong to the classification range g in the total number of invalid times is marked as the abnormal current i2 and the number of records of the abnormal current i2 is counted , the initially collected luminous flux l that does not belong to the classification range g in the total number of invalid times is marked as the abnormal luminous flux l2 and the number of records of the abnormal luminous flux l2 is counted , the initially collected temperature t that does not belong to the classification range g in the total number of invalid times is marked as the abnormal temperature t2 and the number of records of the abnormal temperature t2 is counted ;

[0047] Within each unit time, the screening module calculates the acquisition frequency of the next unit time according to the formula group The specific value. The screening module transmits the acquisition frequency to each control node through the bridging module and the controller in sequence. The control node acquires the initially collected voltage u, initially collected current i, initially collected luminous flux l, and initially collected temperature t at the acquisition frequency .

[0048] Among them, the first acquisition frequency difference and the second acquisition frequency difference The body value is obtained by executing the following program:

[0049] The screening module obtains the address code of each LED light source from the load parameters of the control node. The address code is the coordinate of the LED light source, which is used to record the distance d1 between each LED light source and the controller and the distance d2 between the controller and the bridging module. The screening module can locate the specific position of the LED light source through d1 and d2;

[0050] Calculate the first acquisition frequency difference , and the screening module calculates the first acquisition frequency difference for the next time unit according to the formula ;

[0051] Calculate the second acquisition frequency difference , and the screening module calculates the second acquisition frequency difference for the next time unit according to the formula ;

[0052] The screening module transmits the first acquisition frequency difference and the second acquisition frequency difference to each controller through the bridging module. The controller transmits the first acquisition frequency difference to each control node. Adjacent controllers adjust the acquisition frequency of the connected control nodes according to the second acquisition frequency difference , and on the basis of the second acquisition frequency difference , adjacent control nodes further adjust the acquisition frequency of the control nodes according to the first acquisition frequency difference ;

[0053] Among them, when the adjustment program is executed, the screening module adds up the initial voltages u of the control nodes connected to each controller and takes the average to obtain the local voltage , and the screening module adds up the local voltages corresponding to each controller and takes the average to obtain the overall voltage , the screening module adds up the initial currents i of the control nodes connected to each controller and takes the average to obtain the local current , and the screening module adds up the local currents corresponding to each controller and takes the average to obtain the overall current ;

[0054] The screening module adds up the initial luminous fluxes l of the control nodes connected to each controller and takes the average to obtain the local luminous flux , and the screening module adds up the local luminous fluxes ​​​​Add and average to get the overall luminous flux ;

[0055] The screening module establishes the first coordinate system. The screening module uses the formula The first correlation coefficient k1 of each control node is calculated, and the screening module adds the first correlation coefficient k1 of the control node connected to each controller to obtain the local correlation coefficient. The screening module averages the n local correlation coefficients Enter the first coordinate in ascending order, and the filter module will The correlation coefficients k1 are input into the first coordinate system in descending order;

[0056] Therefore, the screening module connects each first correlation coefficient k1 in the first coordinate system to obtain the first correlation curve, and connects each local correlation coefficient The local correlation curve is obtained by connecting the first correlation curve and the local correlation curve, and the screening module uses the intersection of the first correlation curve and the local correlation curve as the typical value k2;

[0057] Regulating the controller output voltage , the screening module is based on the formula Calculate the compensation voltage for each LED light source value, the filter module will compensate the voltage The value is transmitted to the bridge module, and the bridge module adjusts the compensation voltage according to the The value of the compensation voltage is transferred from the power module to the corresponding controller, so that the output voltage between each controller equal;

[0058] Adjust the output current of the controller , the screening module is based on the formula Calculate the compensation current for each LED light source The screening module transmits the compensation current value to the bridge module, and the bridge module transmits the compensation current of the LED light source connected to each controller. After adding, the local compensation current value is obtained. The bridge module takes the power of the local compensation current from the power module and transmits it to the controller. The controller adjusts the output current of each LED light source. Then transmit electrical energy to the corresponding LED light source, so that the luminous flux of the LED light sources between different controllers is adjusted If they are equal, the adjustment procedure is terminated.

[0059] The threshold number p and the classification range g are obtained by executing the following procedure:

[0060] The screening module presets the initial value of the threshold digit p to be 5, and the initial value of the preset classification range g to be ±0.3. The screening module uses the formula Calculate to obtain the threshold number of bits p for the next time unit by taking an integer;

[0061] The screening module calculates the classification range g for the next time unit according to the formula

[0062] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent replacements or changes, and should be covered by the protection scope of the present invention.​

Claims

1. An intelligent control system for an LED light string light source, including a number of LED light sources, the LED light sources are connected pairwise in sequence, and includes a recording module, a screening module, a bridging module, a power supply module, n controllers and mn control nodes. The control nodes are arranged between two adjacent LED light sources. The power transmission end of the power supply module is connected to the power consumption end of the bridging module through a wire. The power transmission end of the bridging module is respectively connected to the power consumption end of each controller through a wire. The power transmission end of the controller is connected in parallel with the power consumption end of each LED light source through a wire. The output ends of m control nodes are all connected to the input end of a single controller. The output ends of n controllers are all connected to the input end of the bridging module. The port of the bridging module is connected to the port of the screening module. The output end of the screening module is connected to the input end of the recording module; The control node collects the load parameters of two adjacent LED light sources, and the acquisition frequency of the control node is , the first acquisition frequency difference between adjacent control nodes is , the second acquisition frequency difference between adjacent controllers is , the control node transmits the load parameters to the controller, all controllers uniformly transmit the load parameters to the bridging module, the bridging module forwards the load parameters to the screening module, the screening module presets a unit time, and executes the feature extraction program in a cycle with the unit time as the period. The screening module executes the feature extraction program to extract feature information from the load parameters, and transmits the extracted feature information to the recording module. The feature information saved by the recording module is used for reading. The feature information records the operating status of each LED light source and the fault points of the LED light source. The recording module and the feature extraction program are set up, and the control system autonomously extracts effective feature information from the operation records of the LED light sources, directly locates the position of the faulty LED light source, obtains the operating status of each LED light source, and analyzes the health status and fault causes of the LED light sources; The power supply module delivers electrical energy to the bridging module through wires. The bridging module delivers electrical energy to each controller through wires. The controller delivers electrical energy to each LED light source through wires. The screening module executes an adjustment program to adjust the output voltage of each controller , and synchronously adjusts the output current of the LED light sources connected to each controller ; The load parameters include the address code, initial voltage u, initial current i, initial luminous flux l and initial temperature t of each LED light source. The address code is used to locate the specific position of each LED light source; When the feature extraction program is executed, the screening module, within the first unit time, based on the acquisition frequency of the control node , the first acquisition frequency difference of the control node and the second acquisition frequency difference of the controller , rounds the initial voltage u, initial current i, initial luminous flux l, and initial temperature t to two decimal places to obtain the reference voltage u1, reference current i1, reference luminous flux l1, and reference temperature t1; The screening module statistically arranges the reference voltage u1 in descending order of the mode to obtain the first sequence, statistically arranges the reference current i1 in descending order of the mode to obtain the second sequence, statistically arranges the reference luminous flux l1 in descending order of the mode to obtain the third sequence, and statistically arranges the reference temperature t1 in descending order of the mode to obtain the fourth sequence. The front parts of the first sequence, the second sequence, the third sequence and the fourth sequence reflect the load parameters with the highest occurrence frequency. In the feature extraction program, the data similar to the load parameters are deleted to ensure the redundant storage space of the recording module; The screening module preset the threshold digit number p. The screening module extracts the first p digits from the first sequence, the second sequence, the third sequence, and the fourth sequence respectively as the constant set. The constant sets are the voltage constant, the current constant, the luminous flux constant, and the temperature constant in sequence. The screening module preset the classification range g of the constant set. At the end of the first unit time, the threshold digit number p is used to adjust the definition range of the constant set. The larger the definition range is, the fewer the valid records are. On the contrary, the smaller the definition range is, the more the valid records saved by the recording module are. The threshold digit number p is affected by the total number w of the acquisition frequency and the invalid records. The classification range g is used to define the similarity between the load parameter and the constant set. The higher the similarity is, the fewer the valid records are. On the contrary, the lower the similarity is, the more the valid records saved by the recording module are; At the beginning of the second unit time, the screening module judges whether the initial voltage u, initial current i, initial luminous flux l and initial temperature t collected each time all belong to the classification range g of the constant value set. If they all belong to the classification range g, the screening module defines the collected initial voltage u, initial current i, initial luminous flux l and initial temperature t as invalid records and deletes them. The screening module accumulates the total number of invalid records and marks it as w. If any one does not belong to the classification range g, the screening module defines the collected initial load voltage u, initial current i, initial luminous flux l and initial temperature t as valid records. The screening module saves the valid records and the address codes of the corresponding LED light sources together and marks them as feature information. The valid records correspond to the operating states of each LED light source, and the address codes of the LED light sources correspond to the fault points of the LED light sources; It is characterized in that: the acquisition frequency The specific value is obtained by executing the following program: The preset acquisition frequency of the screening module The initial value is 50. The initial voltage u that does not belong to the classification range g in the total number of invalid times is marked as the abnormal voltage u2, and the recording times wu of the abnormal voltage u2 are counted. The initial current i that does not belong to the classification range g in the total number of invalid times is marked as the abnormal current i2, and the recording times wi of the abnormal current i2 are counted. The initial luminous flux l that does not belong to the classification range g in the total number of invalid times is marked as the abnormal luminous flux l2, and the recording times wl of the abnormal luminous flux l2 are counted. The initial temperature t that does not belong to the classification range g in the total number of invalid times is marked as the abnormal temperature t2, and the recording times wt of the abnormal temperature t2 are counted; Within each unit of time, the screening module calculates the acquisition frequency for the next unit of time according to the formula group Specific values of After that, the screening module transmits the acquisition frequency to each control node through the controller, and the control node acquires the initial voltage u, initial current i, initial luminous flux l, and initial temperature t at the acquisition frequency Adjusting the acquisition frequency can change the amount of load parameter data acquired and indirectly adjust the computing amount of the screening module; First acquisition frequency difference and second acquisition frequency difference The body value is obtained by executing the following program: The screening module obtains the address code of each LED light source from the load parameters of the control node. The address code is the coordinate of the LED light source and is used to record the distance d1 between each LED light source and the controller and the distance d2 between the controller and the bridging module. The screening module can locate the specific position of the LED light source through d1 and d2; Calculate the first acquisition frequency difference , the screening module calculates according to the formula to obtain the first acquisition frequency difference for the next time unit ; Calculate the second acquisition frequency difference , the screening module calculates according to the formula to obtain the second acquisition frequency difference for the next time unit ; The screening module transmits the first acquisition frequency difference and the second acquisition frequency difference to each controller through the bridging module. The controller transmits the first acquisition frequency difference to each control node. Between adjacent controllers, the acquisition frequency of the connected control nodes is adjusted according to the second acquisition frequency difference . On the basis of the second acquisition frequency difference , between adjacent control nodes, the acquisition frequency of the control nodes is readjusted according to the first acquisition frequency difference ; The acquisition frequency of the control nodes is readjusted again. When the adjustment program is executed, the screening module adds up the initial voltages u of the control nodes connected to each controller and calculates the average to obtain the local voltage , adds up the local voltages corresponding to each controller and calculates the average to obtain the overall voltage , adds up the initial currents i of the control nodes connected to each controller and calculates the average to obtain the local current , adds up the local currents corresponding to each controller and calculates the average to obtain the overall current ; Add up the initial luminous fluxes l of the control nodes connected to each controller and average them to obtain the local luminous flux , and average the local luminous fluxes corresponding to each controller to obtain the overall luminous flux ; Establish a first coordinate system. The screening module calculates the first correlation coefficient k1 of each control node according to the formula and the screening module adds up the first correlation coefficients k1 of the control nodes connected to each controller and takes the average to obtain the local correlation coefficient . The screening module inputs the n local correlation coefficients into the first coordinate in ascending order, and the screening module inputs the mn correlation coefficients k1 into the first coordinate system in descending order; Therefore, the screening module connects each first correlation coefficient k1 in the first coordinate system to obtain a first correlation curve, and connects each local correlation coefficient to obtain a local correlation curve. The screening module takes the intersection point of the first correlation curve and the local correlation curve as the typical value k2; Adjust the output voltage of the controller , according to the formula Calculate the compensation voltage of each LED light source For the numerical value, the screening module transmits the compensation voltage The numerical value is transmitted to the bridging module, and the bridging module adjusts according to the compensation voltage The numerical value of retrieves the compensation voltage from the power supply module The electric energy is delivered to the corresponding controller, so that the output voltage between each controller is equal; Adjust the output current of the controller , according to the formula Calculate the compensation current of each LED light source , the screening module transmits the compensation current value to the bridging module, and the bridging module adds the compensation currents of the LED light sources connected to each controller to obtain the local compensation current value, retrieves the electrical energy of the local compensation current from the power supply module and transmits it to the controller, and the controller adjusts the output current and then transmits electrical energy to the corresponding LED light source, and the adjustment program is aborted; The threshold digit p and the classification range g are obtained by executing the following program: The initial value of the preset threshold digit p of the screening module is 5, and the initial value of the preset classification range g is ±0.

3. The screening module calculates according to the formula and takes the integer to obtain the threshold digit p for the next time unit; The screening module calculates the classification range g for the next time unit according to the formula ​

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