LED module, LED networking system and control method

Abstract

The present application belongs to the field of LED technology, and discloses an LED module, an LED networking system and a control method, wherein the LED module comprises a switch unit, a control unit and an address storage unit; the switch unit is respectively connected to the first pin and the second pin of the LED module, and is in a closed state; the control unit is respectively connected to the first pin, the second pin, the switch unit and the address storage unit; the control unit is used to control the switch unit to enter an open state after receiving a first control instruction; the control unit is used to control the switch unit to enter a closed state after receiving a second control instruction and an address code, and to determine whether an address burning mark is stored; if so, the second control instruction and the address code are ignored; if not, the address code is burned into the address storage unit to generate an address burning mark. The present application can reduce the cost of first pasting and then burning, and avoid the damage of individual lamp beads during operation affecting the display of normal lamp beads.

Description

Technical Field

[0001] The present application relates to the field of LED technology, and in particular to an LED module, an LED networking system and a control method. Background Art

[0002] At present, LED networking generally adopts two networking methods: serial communication and parallel communication. Serial networking does not require address programming for each LED lamp, but the disadvantage is that if one or several adjacent LEDs are damaged, the LED lamp beads after the damaged LED lamp bead will be uncontrollable, causing a large number of lamp beads to go out; parallel networking will not be affected by the damage of some LED lamp beads and affect the normal operation of other LED lamp beads, but in order to achieve individual control of each LED lamp bead in parallel networking, each LED lamp bead must be programmed with an address.

[0003] At present, there are generally two ways to program the address of LED lamp beads: 1) Burn first and then paste, the LED lamp beads are first burned on the programming device, and then mounted on the display panel or light strip, but this method has low burning efficiency and is prone to errors; 2) Paste first and then burn, the lamp beads are first mounted on the display panel or light strip, and then each LED lamp bead is burned. Usually, wireless communication, optical communication and other methods are used to program the address of each LED lamp, which relies on additional programming equipment, mechanical control equipment, etc., and requires additional programming equipment, which has high production costs. Summary of the invention

[0004] The present application provides an LED module, an LED networking system and a control method, which can reduce the cost of first pasting and then burning, and can also avoid the damage of individual lamp beads during operation affecting the display of normal lamp beads.

[0005] In a first aspect, the present application provides an LED module, comprising: a switch unit, a control unit, and an address storage unit;

[0006] The switch unit is respectively connected to the first pin and the second pin of the LED module and is in a closed state;

[0007] The control unit is respectively connected to the first pin, the second pin, the switch unit and the address storage unit;

[0008] The control unit is used to control the switch unit to enter an off state after receiving a first control instruction;

[0009] The control unit is used to control the switch unit to enter a closed state after receiving the second control instruction and the address code, and determine whether there is an address burning mark; if so, ignore the second control instruction and the address code; if not, burn the address code into the address storage unit to generate an address burning mark.

[0010] Furthermore, the LED module also includes a light emitting unit;

[0011] The control unit is also used to control the light-emitting unit to light up in the first color after the switch unit is controlled to enter the disconnected state; and to perform address self-check after the address code is burned into the address storage unit;

[0012] If the self-test result is that the burning is successful, an address burning mark will be generated;

[0013] If the self-test result is that the burning fails, the light-emitting unit is controlled to light up in the second color.

[0014] Furthermore, the control unit is also used to burn the address code into the address storage unit again and perform address self-test again when the self-test result is a burning failure; if the repeated self-test result is a burning failure, the light-emitting unit is controlled to light up with a second color.

[0015] Furthermore, the control unit is also used to determine whether the received address code is the same as the address code in the address storage unit after detecting the presence of the address burning mark; if they are not the same, control the light-emitting unit to light up in the second color.

[0016] Furthermore, the control unit is also used to read target drive data in the first drive data or the second drive data according to the address code in the address storage unit after receiving the first drive data or the second drive data, and control the light-emitting unit to light up according to the target drive data.

[0017] In a second aspect, the present application provides an LED networking system, including:

[0018] A control module and a plurality of LED modules connected in sequence;

[0019] The first interface of the control module is connected to the first pin of the first LED module;

[0020] The second interface of the control module is connected to the second pin of the last LED module;

[0021] The control module is used to send a first control instruction through a first interface;

[0022] The LED module is used to disconnect the short circuit between the first pin and the second pin after receiving the first control instruction;

[0023] The control module is used to send the second control instruction and the address code at a preset time interval through the first interface;

[0024] The LED module is used to short-circuit the first pin and the second pin after receiving the second control instruction and the address code, and determine whether there is an address burning mark; if not, burn the address code to generate an address burning mark;

[0025] The control module is also used to stop sending the second control instruction and the address code when receiving the second control instruction and the address code through the second interface, and control the operation of each LED module based on the sent address codes.

[0026] Further, the LED module is further configured to light up in a first color after disconnecting the first pin from the second pin;

[0027] The LED module is also used to perform address self-test after the address code is burned in; when the self-test result is that the burning is successful, an address burning mark is generated; when the self-test result is that the burning fails, it lights up with a second color.

[0028] Furthermore, the LED module is also used to perform secondary burning according to the address code and perform address self-test again when the self-test result is burning failure; when the repeated self-test result is burning failure, light up with a second color.

[0029] Furthermore, the LED module is also used to determine whether the received address code is the same as the stored address code after detecting the presence of the address burning mark; and light up in a second color when the received address code is different from the stored address code.

[0030] Furthermore, the control module is also used to obtain a target address code of the LED module lit with the second color and a corresponding replacement completion instruction, and send a second control instruction and the target address code through the first interface.

[0031] Further, the control module is further used to, when receiving the second control instruction and the address code through the second interface, subtract 1 from the address code to obtain the end address code; after obtaining the target address code and before receiving the replacement completion instruction, send the first drive data through the first interface and send the second drive data through the second interface;

[0032] The first driving data includes driving data of each LED module whose address code is smaller than the target address code; the second driving data includes driving data of each LED module whose address code is larger than the target address code and smaller than the end address code.

[0033] Furthermore, the control module is also used to obtain the last address code; after sending the first control instruction, the second control instruction and address code are sent through the first interface at a preset time interval, and the address code increases one by one starting from 1; at the same time, the second control instruction and address code are sent through the second interface at a preset time interval, and the address code decreases one by one starting from the last address code.

[0034] In a third aspect, the present application provides a control method for an LED networking system, including:

[0035] The control module sends a first control instruction in response to the programming instruction;

[0036] After receiving the first control instruction, the LED module sends a disconnection instruction to disconnect the short circuit between the first pin and the second pin;

[0037] The control module determines whether the second control instruction and the address code are received; if not, the second control instruction and the address code are sent at a preset time interval; if received, the second control instruction and the address code are stopped from being sent;

[0038] After receiving the second control instruction and the address code, the LED module sends a closing instruction to control the first pin and the second pin to be short-circuited; determines whether there is an address burning mark; if so, ignores the second control instruction and the address code; if not, burns according to the address code to generate an address burning mark.

[0039] Furthermore, the control method also includes:

[0040] After receiving the second control instruction and the address code, the control module subtracts 1 from the address code to obtain the end address code;

[0041] After acquiring the target address code and before receiving the replacement completion instruction, the control module sends the first driving data through the first interface and sends the second driving data through the second interface; wherein the first driving data includes the driving data of each LED module whose address code is smaller than the target address code; and the second driving data includes the driving data of each LED module whose address code is larger than the target address code and smaller than the end address code;

[0042] After receiving the first driving data or the second driving data, the LED module reads the target driving data in the first driving data or the second driving data according to the burned address code, and lights up according to the target driving data.

[0043] Furthermore, the control method also includes:

[0044] The control module obtains the last address code; after sending the first control instruction, the second control instruction and the address code are sent through the first interface at a preset time interval; the address code increases one by one starting from 1; the control module sends the second control instruction and the address code through the second interface at a preset time interval, and the address code decreases one by one starting from the last address code.

[0045] Furthermore, the control method also includes:

[0046] The LED module lights up in a first color after sending a disconnect command;

[0047] After the address code is burned in, the LED module performs an address self-test; if the self-test result is that the burning is successful, an address burning mark is generated; if the self-test result is that the burning fails, the LED module lights up with a second color.

[0048] Furthermore, the control method also includes:

[0049] When the self-test result of the LED module is that the burning fails, the LED module performs secondary burning according to the address code and performs the address self-test again; if the repeated self-test result is that the burning fails, the LED module lights up with the second color.

[0050] Furthermore, the control method also includes:

[0051] After detecting the presence of the address burning mark, the LED module determines whether the received address code is the same as the stored address code; if they are not the same, the LED module lights up with the second color.

[0052] Furthermore, the control method also includes:

[0053] The control module obtains the target address code of the LED module lit with the second color and the corresponding replacement completion instruction; and sends a second control instruction and the target address code.

[0054] Furthermore, the first color is green and the second color is red.

[0055] In summary, compared with the prior art, the technical solution provided in the embodiment of the present application has at least the following beneficial effects:

[0056] An LED networking system provided by an embodiment of the present application, wherein each LED module is connected in sequence, and the present application sends a first control instruction through a control module to disconnect the first pin and the second pin of each LED module to form a series network, and burns an address for each LED module on the basis of the series network. After the burning is completed, the LED module closes the connection between the first pin and the second pin and enters a parallel working mode; thereby realizing series burning and parallel working, which can not only reduce the cost of pasting first and then burning, but also avoid damage to individual lamp beads during operation that affects the display of normal lamp beads. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 An internal structure diagram of an LED module provided for an exemplary embodiment of the present application;

[0058] Figure 2 A structural diagram of an LED networking system provided as an exemplary embodiment of the present application.

[0059] Figure 3 A structural diagram of an LED networking system during a burning process provided by an exemplary embodiment of the present application.

[0060] Figure 4 A flowchart of a control method for an LED networking system provided by an exemplary embodiment of the present application.

[0061] Figure 5A flowchart of the operation of the LED networking system when a breakpoint occurs is provided for an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0062] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0063] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0064] See also Figure 1 , an embodiment of the present application provides an LED module, comprising:

[0065] A switch unit, a control unit and an address storage unit.

[0066] The switch unit is respectively connected to the first pin and the second pin of the LED module and is in a closed state.

[0067] The control unit is respectively connected to the first pin, the second pin, the switch unit and the address storage unit.

[0068] The control unit is used to control the switch unit to enter an off state after receiving a first control instruction.

[0069] The control unit is used to control the switch unit to enter a closed state after receiving the second control instruction and the address code, and determine whether there is an address burning mark; if so, ignore the second control instruction and the address code; if not, burn the address code into the address storage unit to generate an address burning mark.

[0070] The first pin and the second pin are connected to the bus of the control module. When the two pins are short-circuited, the LED module is connected in parallel to the bus. When the short circuit between the two pins is disconnected, the LED module is connected in series to the bus.

[0071] Specifically, when the switch unit is in a closed state, that is, the first pin and the second pin are short-circuited, the LED module is in a normal working mode and directly ignores the received second control instruction and address code; when the switch unit is in an open state, that is, the first pin and the second pin are disconnected, the LED module is in an address programming mode. If there is no address burning mark at this time, the address will be burned according to the received address code, that is, the address will be written into the address storage unit.

[0072] The above embodiment provides an LED module, which is connected in parallel with the control module and is in a normal working mode if the switch unit is in a closed state, and is in an address programming mode if the switch unit is in an open state. The present application controls the mode switching of the LED module through the switch unit, performs address burning in the address programming mode, and enters the normal working mode after the burning is completed; thereby realizing the series burning and parallel operation of the LED module, which can not only reduce the cost of pasting first and then burning, but also avoid the damage of individual lamp beads during operation affecting the display of normal lamp beads.

[0073] In some embodiments, the LED module further includes a light emitting unit.

[0074] The control unit is also used to control the light-emitting unit to light up in the first color after the switch unit is controlled to enter the disconnected state; and to perform address self-check after the address code is burned into the address storage unit.

[0075] If the self-test result is that the burning is successful, an address burning mark is generated.

[0076] If the self-test result is that the burning fails, the light-emitting unit is controlled to light up in the second color.

[0077] The first color may be green, and the second color may be red.

[0078] Specifically, after the LED module is burned, it performs an address self-check. If the burning is unsuccessful, it means that there is a problem inside the LED module. The LED module will be set to red display status to notify production personnel to replace the LED lamp beads. If the burning is successful, it can continue to maintain green or enter the off state to save power consumption.

[0079] In the specific implementation process, the production yield of LED modules is not 100%, that is, individual LED modules may have internal faults due to problems in the production process, which affects the normal burning of the address.

[0080] The above embodiment can screen out LED modules with internal problems through address self-checking, and remind the staff to replace them as soon as possible by changing the color of the light displayed by the light-emitting unit, thereby ensuring the yield of the LED products.

[0081] In some embodiments, the control unit is further used to burn the address code into the address storage unit again and perform address self-test again when the self-test result is a burning failure; if the repeated self-test result is a burning failure, the light-emitting unit is controlled to light up in a second color.

[0082] Self-checking twice can ensure the accuracy of the self-checking result and avoid wasting normal LED modules due to false detection.

[0083] The above embodiment allows the LED module to perform an address self-check after address burning, that is, read the data after burning, and then compare the address code issued. If they are inconsistent, it is considered that the burning is unsuccessful, and the staff can be reminded to replace it in time.

[0084] In some embodiments, the control unit is further used to determine whether the received address code is the same as the address code in the address storage unit after detecting the presence of the address burning mark; if they are not the same, control the light-emitting unit to light up in the second color.

[0085] Specifically, when the burning process is re-executed due to unsuccessful address burning of individual LED modules, or when the address code belonging to other LED modules is received again due to untimely closure of the switch unit, the LED module finds that its address has been burned, that is, there is an address inclusion mark, then it will not be burned again, only the address will be checked. If the newly received address code is the same as the burned address code, it will be set to not display or green, if they are different, it will be set to display in red.

[0086] Because the replaced LED module should be a blank lamp bead that has not been subjected to any burning operation, that is, the address storage unit is in a blank state, the address burning will be performed when the second control instruction and the address code are received.

[0087] The above embodiment can detect the second color of electricity when an address burning error occurs in the LED module or an erroneous address code is received by mistake, so as to remind the production staff to handle it.

[0088] In some embodiments, the control unit is further configured to read the target drive data in the first drive data or the second drive data according to the address code in the address storage unit after receiving the first drive data or the second drive data, and control the light-emitting unit to light up according to the target drive data. Specifically, since the breakpoint in the light string is open circuit, if the LED module is located between the breakpoint and the first interface, the first drive data will be received, and if it is located between the breakpoint and the second interface, the second drive data will be received.

[0089] The first driving data includes driving data of each LED module whose address code is smaller than the target address code; the second driving data includes driving data of each LED module whose address code is larger than the target address code and smaller than the end address code.

[0090] Specifically, when there is an open circuit at a certain point in the LED light string, the entire networking system will change from one parallel LED light string to two LED light strings, and the first pin of each LED module behind the open circuit point (i.e., breakpoint) will become an output pin, and the second pin will become an input pin, and will be controlled by the second drive data output by the second interface.

[0091] In the specific implementation process, a driving circuit is also provided in the LED module, which is used to receive the driving data read by the control unit and control the operation of the three-color lamp beads in the light-emitting unit according to the driving data.

[0092] The above embodiment can ensure that the LED module can operate normally without being affected by the breakpoint when other lamp beads in the lamp string are short-circuited.

[0093] See also Figure 2 The embodiment of the present application also provides an LED networking system, including:

[0094] A control module and a plurality of LED modules connected in sequence.

[0095] The first interface of the control module is connected to the first pin of the first LED module.

[0096] The second interface of the control module is connected to the second pin of the rear LED module.

[0097] Specifically, each LED module has two pins: a first pin and a second pin; "sequentially connected LED modules" means that the first pin of each LED module is connected to the second pin of the previous LED module, and the second pin is connected to the first pin of the next LED module. If the first pin and the second pin of each LED module are disconnected, the LED light string composed of multiple LED modules is connected in series; if the first pin and the second pin of each LED module are short-circuited, the LED light string composed of multiple LED modules is connected in parallel.

[0098] In order to implement serial address burning, each LED module needs to be mounted with the first pin and the second pin in a short-circuit state, that is, before burning begins, each LED module on the light string is actually connected in parallel.

[0099] The control module is used to send a first control instruction through a first interface.

[0100] The LED module is used to disconnect the short circuit between the first pin and the second pin after receiving the first control instruction.

[0101] The control module is used to send the second control instruction and the address code at a preset time interval through the first interface.

[0102] Each time the address code is sent, 1 is added to the address code sent last time.

[0103] The preset time interval should be longer than the address programming time, or even twice the address programming time.

[0104] The LED module is used to short-circuit the first pin and the second pin after receiving the second control instruction and the address code, and determine whether there is an address burning mark; if not, burn the address code to generate an address burning mark.

[0105] Specifically, the present application requires that the first pin and the second pin of the LED module be short-circuited before address burning is performed, in order to ensure that the next address code can be smoothly sent to the next LED module;

[0106] Because address burning requires a certain amount of time, although the present application has ensured that each time the second control instruction and address code are sent, the LED module corresponding to the previous address code has been burned through a preset time interval in the control module, when the length of the light string is long, the signal transmission time will also increase accordingly, and the time required for address burning will sometimes be extended due to unexpected circumstances; if the address code sent by the control module is 16, but the 15th LED module has not short-circuited the first pin and the second pin at this time, then the 15th LED module will mistakenly receive 2 address codes, and the 16th LED module will receive nothing, thereby affecting the address burning of the 15th and all subsequent LED modules.

[0107] Therefore, the present application causes the LED module to close the first pin and the second pin when receiving the second control instruction and the address code, thereby ensuring that the next LED module receives its corresponding address code. Even if the current LED module receives the next address code before generating the address burning mark due to a long address burning time, causing problems in burning, it will not affect the subsequent address burning of other LED modules in normal order, thereby greatly improving the accuracy of address burning.

[0108] The control module is also used to stop sending the second control instruction and the address code when receiving the second control instruction and the address code through the second interface, and control the operation of each LED module based on the sent address codes.

[0109] Specifically, since the second interface is connected to the second pin of the last LED module on the light string, when the control module receives the second control instruction and address code through the second interface, it can be considered that all LED modules connected between the first interface and the second interface of the control module have now entered the parallel state, that is, all burning is completed, and the driving data of the corresponding LED module can be generated according to the burned address code to drive each LED module in parallel mode.

[0110] In the specific implementation process, the "paste first and then burn" process of this application can be explained by the following example:

[0111] In normal working mode (parallel networking mode), the ADI (first pin) and ADO (second pin) of the LED module are short-circuited inside the module (even if the chip is not powered on, it is turned on by default). Therefore, in this mode, the ADI communication input pin of each LED module is equivalent to being directly connected to the communication output interface of the control module in theory. Since the switch between ADI and ADO inside the chip of the LED module adopts a high temperature and high voltage resistant design, its redundancy is much higher than other circuits. Even if other functional circuits of the control chip are damaged, ADI and ADO can still be in a conductive state. This ensures that even if some LED modules are damaged, it will not affect the normal communication of other normal LED modules.

[0112] In address programming mode (serial networking mode), in order to achieve independent control of each light in the system, it is necessary to burn a separate address for each LED module. The burning process is as follows:

[0113] 1) After power-on, the LED modules in the networking system are in normal working mode and can receive control instructions from the control module normally. At this time, the control module sends a first control instruction, and all LED modules can receive the first control instruction. All LED modules disconnect the connection between ADI and ADO and enter the address programming mode.

[0114] 2) Since the ADI and ADO of all LED modules have been disconnected, only the first LED module maintains the communication connection with the control module. At this time, the control module sends the second special instruction and address code (the value of the address code is 1). After receiving the second control instruction, the first LED module controls the connection between the ADI and ADO pins, and determines that there is no internal storage address burning mark, so address programming is performed.

[0115] 3) After the programming of the first LED module is completed, an address burning mark is generated inside the LED module. Even if the first LED module receives the second control instruction and address code, the address burning operation will no longer be performed.

[0116] 4) Please see Figure 3 After the first LED module completes programming and enters the normal working mode, the ADI and ADO pins of the first LED module are in the on state. At this time, the communication ports of the first and second LED modules are connected to the control module and can receive the control instructions sent by the control module. The control module continues to send the second control instruction + address code (the value of the address code is 2) to program the second LED module (although the first LED module also receives the instruction at the same time, since the address burning mark is already stored inside the first LED module, the first LED module ignores the instruction).

[0117] 5) After completing the address programming of the second LED module, it enters the normal working mode. At this time, the ADI and ADO ports of the second LED module are already connected, and the address programming of the third LED module can be performed.

[0118] 6) The same process is repeated until the control module receives the second control instruction and address code from the second interface, stops sending the second control instruction and address code, and completes address programming of all LED modules.

[0119] Furthermore, each LED module can be mounted directly in a short-circuited and disconnected manner, which can omit the operation of the control module sending the first control instruction, and directly send the second control instruction and the address code at a preset time interval.

[0120] The above embodiment provides an LED networking system, wherein each LED module is connected in series, that is, the first pin of each LED module is connected to the second pin of the previous LED module, and the second pin is connected to the first pin of the next LED module. In this case, if the first pin and the second pin of the LED module are short-circuited, a parallel LED networking state is formed; based on the above networking structure, the present application disconnects the first pin and the second pin of each LED module to form a series network, and burns an address for each LED module on the basis of the series network. After the burning is completed, the LED module closes the connection between the first pin and the second pin and enters a parallel working mode; thereby realizing series burning and parallel working, which can not only reduce the cost of first pasting and then burning, but also avoid damage to individual lamp beads during operation that affects the display of normal lamp beads.

[0121] In some embodiments, the LED module is further configured to light up in a first color after the connection between the first pin and the second pin is disconnected.

[0122] The LED module is also used to perform address self-test after the address code is burned in; when the self-test result is that the burning is successful, an address burning mark is generated; when the self-test result is that the burning fails, it lights up with a second color.

[0123] The first color may be green, and the second color may be red.

[0124] Specifically, after each LED module is burned, it performs an address self-check. If the burning is unsuccessful, it means that there is a problem inside the LED module. The LED module will be set to red display status to notify production personnel to replace the LED module. If the burning is successful, it can continue to maintain green or enter the off state to save power consumption.

[0125] In the specific implementation process, the production yield of LED modules is not 100%, that is, individual LED modules may have internal faults due to problems in the production process, which affects the normal burning of the address; the existing technology usually controls all LED modules to light up in a parallel networking mode before address burning to determine whether there is a LED module with a non-lighting fault, but at this time the LED module does not have an address burned, and the drive data is not extracted based on the burned address, so it is impossible to determine whether there is a problem with the address storage unit of the LED module.

[0126] The above embodiment can screen out LED modules with internal problems through address self-checking, and remind the staff to replace them as soon as possible by changing the color of the display light, thereby ensuring the yield of the LED products.

[0127] Furthermore, the LED module is also used to perform secondary burning according to the address code and perform address self-test again when the self-test result is burning failure; when the repeated self-test result is burning failure, light up with a second color.

[0128] Self-checking twice can ensure the accuracy of the self-checking result and avoid wasting normal LED modules due to false detection.

[0129] The above embodiment allows the LED module to perform an address self-check after address burning, that is, read the data after burning, and then compare the address code issued. If they are inconsistent, it is considered that the burning is unsuccessful, and the staff can be reminded to replace it in time.

[0130] In some embodiments, the LED module is also used to determine whether the received address code is the same as the stored address code after detecting the presence of the address burning mark; and light up in a second color when the received address code is different from the stored address code.

[0131] Specifically, if during the production process, the address burning of one or more LED modules fails and needs to be replaced and re-burned, then the burning process of the above embodiment can be re-executed.

[0132] When re-burning, if a LED module finds that its address has been burned in, that is, there is an address record mark, then the burning action will not be performed, and only the address verification will be performed. If the newly received address code is the same as the burned address code, it will be set to no display or green. If it is different, it will be set to red.

[0133] Because if there are LED modules that have not been burned successfully, after replacing the new LED modules, the replaced LED modules should be blank lamp beads that have not performed any burning actions, and then the entire light string will perform the burning process again.

[0134] Assuming that the 10th LED module is not burned successfully, the control module first sends the first control instruction, and all LED modules disconnect the first pin and the second pin. Then the control module sends the second control instruction + the address code of the first LED module (here, it is assumed that the address code value is 1). After receiving the instruction, the first LED module first sets ADI and ADO to conduct. Since the LED module has been burned (there is an address burning mark inside), the LED module will not perform the burning action after receiving the instruction, but only perform address verification. If the verification is successful (the address is the same), the light will go out or turn green. If the verification is unsuccessful, the light will turn red; and so on, until the 10th LED module, because the newly replaced 10th LED module is blank and does not store the address burning mark, it will perform address burning and address self-test according to the received address code. Then, after the burning is completed, continue to burn the 11th, 12th, etc.

[0135] In addition to re-burning the replaced LED module, the above embodiment allows the LED module that already has an address burning mark to perform address verification, and can also avoid unexpected situations such as the LED module causing address burning errors due to slow pin closure, receiving two address codes, or mistakenly taking the "burned first and then pasted" LED module during mounting.

[0136] In some embodiments, the control module is further used to obtain a target address code of the LED module lit with the second color and a corresponding replacement completion instruction, and send a second control instruction and the target address code through the first interface.

[0137] Specifically, the above-mentioned embodiment can enable the address of the replaced LED module to be burned by re-executing the burning process. However, when the number of LED modules is small and the destination address code of the faulty (set to red) LED module can be obtained, there is no need to repeat the burning process. It is only necessary to stick the replaced LED module into the light string with two pins disconnected, and input the target address code into the control module. At this time, the control module can directly send the second control instruction and the target address code (if there are multiple faulty lamp beads, the target address codes are arranged in ascending order and sent one by one), because at this time, the LED modules that have been burned are connected in parallel, and only the new lamp beads will connect ADI and ADO after receiving them, and then perform address burning.

[0138] Assume that the 10th, 16th and 25th LED modules are not burned successfully, and it is known that the target address codes are 10, 16 and 25. After replacing the LED modules with open ADI and ADO to positions 10, 16 and 25, these three target address codes are input to the control module, and then the control module can directly send the second control instruction and the target address code 10. At this time, since the LED modules with address codes 1-9 are connected in parallel, they can all receive the second control instruction and the target address code 10, but since the address burning mark has been stored internally, the second control instruction and the target address code 10 are ignored (the LED module in this embodiment will not perform address verification when there is an address burning mark), and the two pins of the 10th LED module are open, so the 11th and subsequent LED modules cannot receive the second control instruction and the target address code 10. Only the 10th newly replaced blank LED module will turn on ADI and ADO according to the second control instruction and burn the target address code 10.

[0139] Then, the control module continues to send the second control instruction and the target address code 16 in order from small to large. Similarly, the 1st to 15th LED modules can receive but ignore them, the 17th and subsequent LED modules cannot receive them, and only the 16th newly replaced blank LED module will turn on ADI and ADO according to the second control instruction and burn the target address code 16.

[0140] The address burning operation of the 25th new LED module is similar.

[0141] Although the above embodiment needs to obtain the target address code in advance, the burning operation after knowing the target address code is more efficient than re-executing the burning process. In actual applications, production personnel can balance the time required to obtain the target address code and the time required to re-burn, and choose the most efficient address update method under the current circumstances.

[0142] In some embodiments, the control module is also used to, when receiving a second control instruction and an address code through a second interface, subtract 1 from the address code to obtain a final address code; after obtaining the target address code and before receiving a replacement completion instruction, send the first drive data through the first interface and send the second drive data through the second interface.

[0143] The first driving data includes driving data of each LED module whose address code is smaller than the target address code; the second driving data includes driving data of each LED module whose address code is larger than the target address code and smaller than the end address code.

[0144] Specifically, as mentioned in the above embodiment, when a faulty red LED module is replaced, since the replacement position needs to remain open, before the new LED module is replaced and the address is re-burned, each LED module after the fault point cannot receive the drive data from the control module, that is, remains off.

[0145] This is also the second purpose of "connecting the second interface of the control module and the second pin of the last LED module". When there is an open circuit at a certain point in the LED light string, the second interface will become the output interface, and the entire networking system will change from one parallel LED light string to two LED light strings. The first pin of each LED module behind the open circuit point will become the output pin, and the second pin will become the input pin, which will be controlled by the second drive data output by the second interface.

[0146] Assuming that there are 48 LED modules in the light string, after burning, the 15th LED module is set to red, then the 15th LED module is removed, and the circuit between the 14th and 16th LED modules is open. If the second pin of the 48th LED module is not connected to the control module, the 16th to 48th LED modules are all off. In the networking architecture of this application, if the end address code "48" and the target address code "15" are known, the first interface can output the driving data of the 1st to 14th LED modules, and the second interface can output the driving data of the 16th to 48th LED modules. In this way, when the lamp beads are replaced, the normal LED modules can be displayed normally without being extinguished due to breakpoints.

[0147] In some embodiments, the control module is also used to obtain the last address code; after sending the first control instruction, sending the second control instruction and address code through the first interface at a preset time interval, and the address code increases one by one starting from 1; at the same time, sending the second control instruction and address code through the second interface at a preset time interval, and the address code decreases one by one starting from the last address code.

[0148] Specifically, if the number of LED modules on the light string can be obtained before programming, the first interface and the second interface of the control module can be output simultaneously to achieve bidirectional programming, thereby reducing the programming time by half.

[0149] Assuming that there are 48 LED modules waiting to be burned, after the first interface sends the first control instruction, the first interface sends the second control instruction and address code at a preset time interval, and the address code increases one by one starting from 1. The second interface sends the second control instruction and address code at a preset time interval, and the address code decreases one by one starting from 48. When either the first interface or the second interface receives the second control instruction and address code, it stops sending the second control instruction and address code. At this time, it is considered that the entire light string has been burned and enters the parallel networking mode, which can be controlled and driven by any interface.

[0150] The above embodiment can perform programming from two directions simultaneously through two interfaces of the control module when the end address code is known, which can greatly shorten the programming time and improve the programming efficiency.

[0151] See also Figure 4 Another embodiment of the present application provides a control method for an LED networking system, comprising:

[0152] Step S11: the control module sends a first control instruction in response to the programming instruction.

[0153] Step S12, after receiving the first control instruction, the LED module sends a disconnection instruction to disconnect the short circuit between the first pin and the second pin. Specifically, if the first pin and the second pin of each LED module are disconnected, the LED light string composed of the multiple LED modules is connected in series, and if the first pin and the second pin of each LED module are short-circuited, the LED light string composed of the multiple LED modules is connected in parallel.

[0154] Step S13, the control module determines whether the second control instruction and address code are received; if not, the second control instruction and address code are sent at a preset time interval; if received, the second control instruction and address code are stopped from being sent.

[0155] Specifically, when the control module receives the second control instruction and address code, it can be considered that all LED modules have entered the parallel state, that is, all burning is completed, and the driving data of the corresponding LED module can be generated according to the burned address code to drive each LED module in parallel mode.

[0156] Step S14, after receiving the second control instruction and the address code, the LED module sends a closing instruction to control the first pin and the second pin to be short-circuited; determine whether there is an address burning mark; if so, ignore the second control instruction and the address code; if not, burn according to the address code to generate an address burning mark.

[0157] Because address burning takes a certain amount of time, and when the length of the light string is long, the signal transmission time will also increase accordingly, and the time required for address burning may sometimes be extended due to unexpected circumstances.

[0158] Therefore, the present application causes the LED module to close the first pin and the second pin when receiving the second control instruction and the address code, thereby ensuring that the next LED module receives its corresponding address code. Even if the current LED module receives the next address code before generating the address burning mark due to a long address burning time, causing problems in burning, it will not affect the subsequent address burning of other LED modules in normal order, thereby greatly improving the accuracy of address burning.

[0159] The address burning mark is generated so that the LED modules connected in parallel can ignore the second control instruction and address code belonging to other LED modules after receiving them, so that only one LED module is burned at a time.

[0160] See also Figure 5 In some embodiments, the control method further includes:

[0161] Step S21, after receiving the second control instruction and the address code, the control module subtracts 1 from the address code to obtain the end address code.

[0162] Step S22: after acquiring the target address code and before receiving the replacement completion instruction, the control module sends the first driving data through the first interface and sends the second driving data through the second interface.

[0163] The first driving data includes driving data of each LED module whose address code is smaller than the target address code; the second driving data includes driving data of each LED module whose address code is larger than the target address code and smaller than the end address code.

[0164] Step S23, after receiving the first driving data or the second driving data, the LED module reads the target driving data in the first driving data or the second driving data according to the burned address code, and lights up according to the target driving data.

[0165] Specifically, when replacing a faulty, red LED module, since the replacement position needs to remain open, before the new LED module is replaced and the address is re-burned, each LED module after the fault point cannot receive the drive data of the control module, that is, remains off.

[0166] Therefore, in the present application, when there is an open circuit at a certain point in the LED light string, the second interface will become the output interface, and the entire networking system will be changed from one parallel LED light string to two LED light strings. The first pin of each LED module behind the open circuit point will become the output pin, and the second pin will become the input pin, which will be controlled by the second drive data output by the second interface.

[0167] The corresponding normal LED module also operates according to the received first driving data or second driving data.

[0168] In some embodiments, the control method further includes:

[0169] The control module obtains the last address code; after sending the first control instruction, the second control instruction and the address code are sent through the first interface at a preset time interval; the address code increases one by one starting from 1; the control module sends the second control instruction and the address code through the second interface at a preset time interval, and the address code decreases one by one starting from the last address code.

[0170] Specifically, if the number of LED modules on the light string, ie, the end address code, can be obtained before programming, the first interface and the second interface can be simultaneously output to implement bidirectional programming to reduce the programming time by half.

[0171] Assuming that there are 48 LED modules waiting to be burned, after the first interface sends the first control instruction, the first interface sends the second control instruction and address code at a preset time interval, and the address code increases one by one starting from 1. The second interface sends the second control instruction and address code at a preset time interval, and the address code decreases one by one starting from 48. When either the first interface or the second interface receives the second control instruction and address code, it stops sending the second control instruction and address code. At this time, it is considered that the entire light string has been burned and enters the parallel networking mode, which can be controlled and driven by any interface.

[0172] The above embodiment can perform programming from two directions simultaneously through two interfaces when the end address code is known, which can greatly shorten the programming time and improve the programming efficiency.

[0173] In some embodiments, the control method further includes:

[0174] The LED module lights up in a first color after sending the disconnect command.

[0175] After the address code is burned in, the LED module performs an address self-test; if the self-test result is that the burning is successful, an address burning mark is generated; if the self-test result is that the burning fails, the LED module lights up with a second color.

[0176] The first color may be green, and the second color may be red.

[0177] Specifically, after each LED module is burned, it performs an address self-check. If the burning is unsuccessful, it means that there is a problem inside the LED module. The LED module will be set to red display status to notify production personnel to replace the LED module. If the burning is successful, it can continue to maintain green or enter the off state to save power consumption.

[0178] The above embodiment can screen out LED modules with internal problems through address self-checking, and remind the staff to replace them as soon as possible by changing the color of the display light, thereby ensuring the yield of the LED products.

[0179] In some embodiments, the control method further includes:

[0180] When the self-test result of the LED module is that the burning fails, the LED module performs secondary burning according to the address code and performs the address self-test again; if the repeated self-test result is that the burning fails, the LED module lights up with the second color.

[0181] Self-checking twice can ensure the accuracy of the self-checking result and avoid wasting normal LED modules due to false detection.

[0182] The above embodiment allows the LED module to perform an address self-check after address burning, that is, read the data after burning, and then compare the address code issued. If they are inconsistent, it is considered that the burning is unsuccessful, and the staff can be reminded to replace it in time.

[0183] In some embodiments, the control method further includes:

[0184] After detecting the presence of the address burning mark, the LED module determines whether the received address code is the same as the stored address code; if they are not the same, the LED module lights up with the second color.

[0185] Specifically, if during the production process, the address burning of one or more LED modules fails and needs to be replaced and re-burned, then the burning process can be re-executed.

[0186] When re-burning, if a LED module finds that its address has been burned in, that is, there is an address record mark, then the burning action will not be performed, and only the address verification will be performed. If the newly received address code is the same as the burned address code, it will be set to no display or green. If it is different, it will be set to red.

[0187] Because if there are LED modules that have not been burned successfully, after replacing the new LED modules, the replaced LED modules should be blank lamp beads that have not performed any burning actions, and then the entire light string will perform the burning process again.

[0188] The above embodiment enables the LED module to perform address verification when re-executing the burning process, and can re-detect whether the internally stored address code is correct, avoiding the situation where the LED address code is burned incorrectly due to late pin closure or address code sending error, thereby greatly improving the yield of LED products.

[0189] In some embodiments, the control method further includes:

[0190] The control module obtains the target address code of the LED module lit with the second color and the corresponding replacement completion instruction; and sends a second control instruction and the target address code.

[0191] Specifically, when the number of LED modules is small and the destination address code of the faulty LED module can be obtained, there is no need to repeat the burning process. You only need to stick the replaced LED module into the light string with two pins disconnected. At this time, you can directly send the second control instruction and the target address code (if there are multiple faulty lamp beads, arrange the target address codes in ascending order and send them one by one), because at this time, the LED modules that have been burned are connected in parallel, and only the new lamp beads will connect ADI and ADO and burn the address after receiving them.

[0192] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0193] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A LED networking system, characterized in that: It includes a control module and a plurality of LED modules connected in sequence; The first interface of the control module is connected to the first pin of the first LED module; The second interface of the control module is connected to the second pin of the last LED module; The control module is used to send a first control instruction through the first interface; The LED module is used to disconnect the short circuit between the first pin and the second pin after receiving the first control instruction; The control module is used to send the second control instruction and the address code through the first interface at a preset time interval; wherein the preset time interval is twice the address burning time; the control module is also used to output the second control instruction and the address code through the first interface and the second interface at the same time, so as to realize bidirectional burning and reduce the burning time by half; The LED module is used to short-circuit the first pin and the second pin after receiving the second control instruction and the address code, and determine whether there is an address burning mark; if not, burn the address code to generate the address burning mark; The control module is further configured to stop sending the second control instruction and the address code when receiving the second control instruction and the address code through the second interface, and control the operation of each of the LED modules based on the sent address codes; The LED module is also used to determine whether the received address code is the same as the stored address code after detecting the presence of the address burning mark; and light up in a second color when the received address code is not the same as the stored address code; The control module is also used to, when receiving the second control instruction and address code through the second interface, subtract 1 from the address code to obtain the end address code; after obtaining the target address code and before receiving the replacement completion instruction, send the first drive data through the first interface and send the second drive data through the second interface; wherein the first drive data includes the drive data of each LED module whose address code is less than the target address code; and the second drive data includes the drive data of each LED module whose address code is greater than the target address code and less than the end address code.

2. The LED networking system according to claim 1, characterized in that: The LED module is also used to light up in a first color after disconnecting the first pin and the second pin; The LED module is also used to perform address self-check after the address code is burned; when the self-check result is that the burning is successful, the address burning mark is generated; when the self-check result is that the burning fails, the LED module is lit with a second color.

3. The LED networking system according to claim 2, characterized in that: The LED module is also used to perform secondary burning according to the address code and perform address self-test again when the self-test result is burning failure; when the repeated self-test result is burning failure, light up with the second color.

4. The LED networking system according to claim 3, characterized in that: The control module is further configured to obtain a target address code of the LED module lit with the second color and a corresponding replacement completion instruction, and to send the second control instruction and the target address code through the first interface.

5. The LED networking system according to claim 1, characterized in that: The control module is also used to obtain the last address code; after sending the first control instruction, send the second control instruction and address code through the first interface at the preset time interval, and the address code increases one by one starting from 1; at the same time, send the second control instruction and address code through the second interface at the preset time interval, and the address code decreases one by one starting from the last address code.

6. A control method for an LED networking system, characterized in that: include: The control module sends a first control instruction in response to the programming instruction; After receiving the first control instruction, the LED module sends a disconnection instruction to disconnect the short circuit between the first pin and the second pin; The control module determines whether a second control instruction and an address code are received; If not received, the second control instruction and the address code are sent at a preset time interval; if received, the second control instruction and the address code are stopped; wherein the preset time interval is twice the address burning time; the control module also outputs the second control instruction and the address code simultaneously through the first interface and the second interface to realize bidirectional burning to reduce the burning time by half; After receiving the second control instruction and the address code, the LED module sends a closing instruction to control the first pin and the second pin to be short-circuited; determines whether there is an address burning mark; if so, ignores the second control instruction and the address code; if not, burns according to the address code to generate the address burning mark; After detecting the presence of the address burning mark, the LED module determines whether the received address code is the same as the stored address code; if they are not the same, the LED module lights up in the second color; After receiving the second control instruction and the address code, the control module subtracts 1 from the address code to obtain the end address code; After acquiring the target address code and before receiving the replacement completion instruction, the control module sends the first driving data through the first interface and sends the second driving data through the second interface; wherein the first driving data includes the driving data of each LED module whose address code is smaller than the target address code; and the second driving data includes the driving data of each LED module whose address code is larger than the target address code and smaller than the end address code; After receiving the first driving data or the second driving data, the LED module reads the target driving data in the first driving data or the second driving data according to the burned address code, and lights up according to the target driving data.

7. The control method of the LED networking system according to claim 6, characterized in that: Also includes: The control module obtains the end address code; after sending the first control instruction, the second control instruction and the address code are sent through the first interface at the preset time interval; the address code increases one by one starting from 1; The control module sends the second control instruction and the address code through the second interface at the preset time interval, and the address codes are decreased one by one starting from the last address code.

8. The control method of the LED networking system according to claim 6, characterized in that: Also includes: The LED module lights up in a first color after sending the disconnection instruction; After the LED module has completed burning the address code, it performs an address self-check; If the self-test result is that the burning is successful, the address burning mark is generated; if the self-test result is that the burning fails, it lights up in the second color.

9. The control method of the LED networking system according to claim 8, characterized in that: Also includes: When the self-test result of the LED module is that the burning fails, the LED module performs a secondary burning according to the address code and performs an address self-test again; If the repeated self-test result is a programming failure, it lights up in the second color.

10. The control method of the LED networking system according to claim 9, characterized in that: Also includes: The control module obtains the target address code of the LED module lit with the second color and the corresponding replacement completion instruction; And send the second control instruction and the target address code.

11. The control method of the LED networking system according to claim 9, characterized in that: The first color is green, and the second color is red.

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