A cascade circuit for LED light string

Abstract

The present application discloses a cascade circuit for LED light strings, including: a code writer, a control unit group, and multiple groups of light strings; the control unit group includes multiple control units, the control units are cascaded, and the control unit is connected to the light string; wherein the code writer is used to send code writing data and control data to the control unit; the control unit is used to forward the code writing data, and selectively send code writing data or content data to the light string according to the control data. The present application connects the code writer to the control unit, and uses the code writer to send code writing data and control data to the control unit, so that the control unit can send code writing data or content data to multiple groups of LED light strings connected thereto according to the control data, debug the LED light string, and can also send code writing data and control data to the control unit connected thereto, effectively solving the problem of the small number of output paths of the code writer, thereby improving the efficiency of LED engineering debugging.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic circuits, and in particular to a cascade circuit for an LED light string. Background Art

[0002] In order for LED light strings to achieve dynamic effects such as displaying videos, flashing patterns or text, it is necessary to first address and write parameters for the LED light strings and each LED lamp bead in the LED light strings. In general, the LED lights can be addressed and written with a code writer or a master control, but the existing code writers have few output paths. When using code writers to perform multi-channel control of up to a dozen or dozens of LED light strings, especially when point-controlling each LED lamp bead in each LED light string, there will be problems of low efficiency and long time consumption. The master control is generally used for data processing and data transmission, and coding is its additional function. When using the master control to perform multi-channel control of up to a dozen or dozens of LED light strings, due to the differences in the design and interaction methods of each master control, it is necessary to increase chip support, resulting in a large workload. In addition, during the installation and debugging of the LED light string, if the line has been connected to the master control or sub-control, it is necessary to first disconnect the line between the LED light and the controller, reconnect it to the code writer, and address and write parameters one by one. This is a large amount of work and it is easy to connect the wrong line. Summary of the invention

[0003] In view of the above problems, the present application proposes a cascade circuit for LED light strings, which effectively solves the problem of the small number of output paths of the code writer, thereby improving the efficiency of LED lighting project debugging.

[0004] In a first aspect, an embodiment of the present application proposes a cascade circuit for an LED light string, characterized in that it includes: a code writer, a control unit group, and multiple groups of light strings; the control unit group includes multiple control units, the control units are cascaded, and the control unit is connected to the light string; wherein the code writer is used to send code writing data and control data to the control unit; the control unit is used to forward the code writing data, and selectively send code writing data or content data to the light string according to the control data.

[0005] In combination with the first aspect, in a possible implementation of the first aspect, the control unit group includes a first control unit, the first control unit includes a first controller, a first data module, a second data module and an output interface; the code writer is connected to the first control unit, and the first controller is connected to the first data module and the second data module; the first data module is used to receive the code writing data; the first controller is used to receive the control data, and control the first data module and the second data module according to the control data, and send code writing data or content data to the light string.

[0006] In combination with the first aspect, in a possible implementation of the first aspect, the output interface is connected to the first data module and the second data module, and the output interface is used to forward coding data or content data to the light string.

[0007] In combination with the first aspect, in a possible implementation of the first aspect, the control unit group includes a second control unit, the second control unit includes a second controller and a second switch module; the code writer is connected to the second control unit, and the second controller is connected to the second switch module; the second switch module is used to receive the code writing data, and send second instruction data to the second controller according to the code writing data; the second controller is used to receive the second instruction data, and perform a code writing or parameter writing function on the light string according to the second instruction data.

[0008] In combination with the first aspect, in a possible implementation of the first aspect, the first control unit also includes a first switch module, which is connected to the first controller; the first switch module is used to receive the writing data of the code writer, and send first instruction data to the first controller according to the writing data; the first controller is used to exchange and communicate data with the first switch module according to the first instruction data.

[0009] In combination with the first aspect, in a possible implementation of the first aspect, the first switch module is connected to the second switch module, the second switch module is used to receive output data of the first switch module, and send third instruction data to the second controller according to the output data; the second controller is used to execute a code writing or parameter writing function on the light string according to the third instruction data.

[0010] In combination with the first aspect, in a possible implementation manner of the first aspect, the second controller is further configured to exchange and communicate data with the second switch module according to the third instruction data.

[0011] In combination with the first aspect, in a possible implementation manner of the first aspect, the first switch module is used to receive feedback data from the second switch module.

[0012] In combination with the first aspect, in a possible implementation of the first aspect, the first control unit includes a NOT gate element, and the NOT gate element is connected to the first data module and the second data module; the NOT gate element is used to receive the control data, and control the first data module and the second data module according to the control data, and send code writing data or content data to the light string.

[0013] In combination with the first aspect, in a possible implementation manner of the first aspect, the cascade circuit includes at least one group of signal lines.

[0014] The present application provides a cascade circuit for LED light strings. By connecting a code writer to a control unit, the code writer can be used to send code writing data and control data to the control unit, so that the control unit can selectively send code writing data or content data to multiple groups of LED light strings connected thereto according to the control data, thereby debugging the LED light string. In addition, the control unit can also send the code writing data and control data to another control unit connected thereto, so that the other control unit can also debug the LED light string connected thereto according to the code writing data and control data. Since the control unit can receive the code writing data and control data sent by the code writer, and debug the LED light string according to the control data, it can also forward the code writing data and control data to the control unit connected thereto, thereby effectively solving the problem of the small number of output paths of the code writer. In addition, when installing and debugging the circuit, the code writer can be connected to the corresponding control unit, so that the functions of coding, parameter writing, debugging, etc. of the LED light string can be realized without changing the original wiring, thereby improving the efficiency of debugging the LED lighting project. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 is a structural schematic diagram of a cascade circuit for an LED light string provided in an embodiment of the present application;

[0017] Figure 2 is a schematic diagram of a specific structure of a cascade circuit provided in an embodiment of the present application;

[0018] Figure 3 is a specific structural diagram of another cascade circuit provided in an embodiment of the present application;

[0019] Figure 4 It is a structural schematic diagram of a cascade circuit with a light control unit provided by an embodiment of the present application;

[0020] Figure 5 It is a specific structural schematic diagram of a cascade circuit with a light control unit and a circuit without a light control unit provided in an embodiment of the present application. DETAILED DESCRIPTION

[0021] The embodiments described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Those skilled in the art will appreciate that with the evolution of technology and the emergence of new application scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0022] In addition, the terms "includes," "comprises," and "has," and any variations thereof, are intended to cover a non-exclusive inclusion.

[0023] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicating directions or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0024] These terms are mainly used to better describe the embodiments of the present disclosure and their embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, some of the above terms can be used to indicate orientation or positional relationship, and may also be used to indicate other meanings. For example, the term "on" may also be used to indicate a certain dependency or connection relationship in some cases.

[0025] For those skilled in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0026] In addition, the terms "disposed", "connected" and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements or components.

[0027] For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0028] Unless otherwise stated, the term "plurality" means two or more.

[0029] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0030] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0031] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0032] In LED lighting projects, in general, LED lights can be addressed and parameters written through a code writer or a master control. However, due to the small number of output channels of existing code writers, when using code writers to perform multi-channel control of up to a dozen or dozens of LED light strings, especially when point-controlling each LED lamp bead in each LED light string, problems such as low efficiency and long time consumption will occur. The master control is generally used for data processing and data transmission, and coding is its additional function. When using the master control to perform multi-channel control of up to a dozen or dozens of LED light strings, since each master control has different designs and interaction methods, it is necessary to increase chip support, resulting in a large workload. In addition, during the installation and debugging of LED light strings, if the line has been connected to the master control or sub-control, it is necessary to first disconnect the line between the LED light and the controller, reconnect it to the code writer, and address and write parameters one by one. This is a large project and it is easy to connect the wrong line.

[0033] In view of this, the present application proposes a cascade circuit for LED light strings. By connecting a code writer to a control unit, the code writer can be used to send code writing data and control data to the control unit, so that the control unit can selectively send code writing data or content data to multiple groups of LED light strings connected thereto according to the control data, thereby debugging the LED light strings. In addition, the control unit can also send the code writing data and control data to another control unit connected thereto, so that the other control unit can also debug the LED light string connected thereto according to the code writing data and control data. Since the control unit can receive the code writing data and control data sent by the code writer, and debug the LED light string according to the control data, it can also forward the code writing data and control data to the control unit connected thereto, thereby effectively solving the problem of the small number of output paths of the code writer. In addition, when installing and debugging the circuit, the code writer can be connected to the corresponding control unit, so that the functions of coding, parameter writing, debugging, etc. of the LED light string can be realized without changing the original wiring, thereby improving the efficiency of debugging the LED lighting project.

[0034] The present application is specifically described through the following examples.

[0035] like Figure 1 As shown, Figure 11 is a schematic diagram of a cascade circuit for an LED light string provided in an embodiment of the present application, the cascade circuit comprising: a code writer 100, a control unit group 200, an LED light string 300 and an LED light string 400; wherein the control unit group 200 may include a plurality of control units. Figure 1 As shown, the control unit group 200 may include a control unit 210 and a control unit 220, the control unit 210 is connected to the LED light string 300, and the control unit 220 is connected to the LED light string 400. It should be noted that the control unit 210 and the control unit 220 may be cascaded, and data exchange and communication may be performed between the control unit 210 and the control unit 220. The code writer 100 may be connected to the control unit 210 or the control unit 220, and send coding data and control data to the control unit 210 or the control unit 220. Then, the control unit 210 or the control unit 220 may receive and forward the coding data sent by the code writer 100, or may selectively send coding data or content data to the LED light string connected thereto according to the received control data, so that the LED light string can write addresses, write parameters, or play content data normally. Figure 1 In the embodiment, the code writer 100 is connected to the control unit 210, and sends the code writing data and the control data to the control unit 210, so that the control unit 210 writes the address and the parameter to the LED light string 300 according to the control data, or controls the LED light string 300 to play the content data. In addition, the control unit 210 can also forward the code writing data and the control data to the control unit 220, so that the control unit 220 writes the address and the parameter to the LED light string 400 according to the control data, or controls the LED light string 400 to play the content data.

[0036] It is understandable that in the LED control system, the code data sent by the code writer is encoded data, which can be used to communicate with other devices and control LED lights; the control data sent by the code writer can usually be used to change the brightness, color and other properties of the LED lights. In addition, the LED light string is addressed, that is, each LED lamp bead of the LED light string is assigned an independent address. By writing the address to the LED light string, the LED light string can play the content data normally, such as displaying dynamic effects such as video, flashing patterns or text; since some of the current LED lamp parameters can be adjusted through external protocols, such as current size, brightness or color temperature and other parameters, writing parameters to the LED lamp is to rewrite the parameters of the LED lamp. By writing parameters to the LED light string, the normal operation of the LED light string can be ensured and the service life of the LED light string can be extended.

[0037] In a feasible embodiment, the control unit of the control unit group 200 may include at least a main control with lights, a main control without lights, and a sub-controller with lights. It is understandable that in an LED control system, the main control usually refers to a core controller or a main control board that controls the entire LED system. The main control is responsible for receiving external input signals (such as user operation instructions, sensor data, etc.); in general, it can be divided into a main control with lights and a main control without lights. The main control without lights is mainly used for data processing and transmission. The main control with lights has a function of bringing lights than the main control without lights, but the capacity is generally smaller than that of the main control without lights. In addition, in LED lighting projects, since the number of LED lamps can reach tens of thousands, it is generally used in the form of a main control plus a sub-control, where one main control is used with multiple sub-controllers to achieve large-capacity control. At this time, the main control generally does not have lights, and the sub-controller has lights. In general, the area of ​​the lights is 8 channels, and each channel can be set to within 1280 points. That is to say, the LED light strip can be divided into 8 independent areas, and a maximum of 1280 LED points are used in each area to achieve lighting effects.

[0038] In a possible embodiment, if Figure 2 As shown, the control unit 210 may be a master control unit with a light, and the control unit 210 may include a first controller 220, a first data module 230, a second data module 240 and an output interface 250. Figure 2 In the embodiment, the code writer 100 can be connected to the first data module 230 through a data line and to the first controller 220 through a control signal line. The first controller 220 is connected to the first data module 230 and the second data module 240 respectively, and the output interface 250 is connected to the LED light string 300. Through the connection of the data line and the control signal line, the first data module 230 can receive the code writing data sent by the code writer 100, and the first controller 220 can receive the control data sent by the code writer 100. After the first controller 220 receives the control data sent by the code writer 100, the first controller 220 can automatically switch the first data module 230 and the second data module 240 according to the control data, thereby realizing the selective output of the code writing data or the content data. Figure 2 As shown, the output interface 250 is connected to the LED light string 300, and the data information output by the first data module 230 and the second data module 240 can be forwarded to the LED light string 300 through the output interface 250, thereby writing the address and parameters of the LED light string 300, or controlling the LED light string 300 to play content data.

[0039] In a feasible embodiment, the first data module 230 may be a coding data output module, the second data module 240 may be a raw data output module, and the first controller 220 may be an MCU controller. The coding data output module is generally used to send the encoded data to the LED driver module to control the on and off, color and brightness of the LED lamp. The coding data output module may generate corresponding control signals according to the system design and control algorithm, and then convert these signals into a form that the LED can understand, and output them to the LED driver module. Specifically, the coding data output module may be responsible for generating PWM (pulse width modulation) signals to control the brightness of the LED lamp, or generate data in a specific format to control the color and display effect of the LED lamp. In this way, the coding data output module of the main control can achieve precise control of the LED lamp, thereby realizing various lighting effects and display functions. In addition, the raw data output module of the main control is generally used to output the control data generated by the main control to the LED driver module or other external devices in the original format. These data may include PWM signals, brightness values, color data, etc., to achieve precise control and debugging of the LED lamp.

[0040] In a feasible embodiment, the control unit 220 may also be a master control with a light, such as Figure 2 As shown, the control unit 220 may include a second controller 260, a third data module 270, a fourth data module 280 and an output interface 290. The first controller 220 may be connected to the second controller 260 via a control signal line, the first data module 230 may be connected to the third data module 270 via a data line, the second controller 260 is connected to the third data module 270 and the fourth data module 280 respectively, and the output interface 290 is connected to the LED light string 400. Figure 2 In the embodiment, the third data module 270 can receive the coding data sent by the first data module 230, and the second controller 260 can receive the control data sent by the first controller 220. When the second controller 260 receives the control data sent by the first controller 220, the second controller 260 can automatically switch the third data module 270 and the fourth data module 280 according to the control data, thereby realizing the selective output of the coding data or the normal playback content data. Figure 2 As shown, the output interface 290 is connected to the LED light string 400, and the data information output by the third data module 270 and the fourth data module 280 can be forwarded to the LED light string 400 through the output interface 290, thereby writing the address and parameters of the LED light string 400, or controlling the LED light string 400 to play content data.

[0041] In a feasible embodiment, the structure of the control unit 220 can be the same as that of the control unit 210, that is, the control unit 220 can be a master control, the third data module 270 can be a code writing data output module, and the fourth data module 280 can be an original data output module.

[0042] The embodiment of the present application utilizes the combination of the code writer 100 and the control unit 210 to connect the code writer 100 to the control unit 210, so that the code writer 100 can send control data to the first controller 220 of the control unit 210 through the control signal line, and can also send code writing data to the first data module 230 of the control unit 210 through the data line. The first controller 220 automatically switches the first data module 230 and the second data module 240 according to the received control data, thereby realizing the selective output of code writing data or content data, and then realizing the address writing, parameter writing or control of the LED light string to play the content data normally. Since the code writer 100 can be connected to the control unit 210 and send code writing data and control data to the control unit 210, the control unit 210 can also forward the code writing data and the control data to the control unit 220 connected thereto, thereby effectively improving the disadvantage of the code writer having a small number of output paths. In addition, when the control unit 210 or the control unit 220 needs to perform multi-channel control on as many as a dozen or dozens of groups of LED light strings, in the circuit of the cascade of the control unit 210 and the control unit 220, the code writer 100 can be connected to the control unit 210, and the control unit 210 can be controlled by the code writer 100 to achieve multi-channel control of these LED light strings, without the need to add additional chips to the control unit 210 or the control unit 220, thereby effectively solving the problem of the difficulty of adding chips to the control unit. In addition, whether it is a new installation or maintenance circuit, there is no need to change the original circuit. By connecting the code writer 100 to the first control unit in the circuit, the functions of coding, parameter writing and debugging of the LED light can be realized, without adjusting the original circuit, and without operating one by one, thereby improving the efficiency of LED engineering debugging.

[0043] It should be noted that multiple control units can be added to the original cascade circuit, and the structure and cascade relationship of each control unit are the same as those in the above embodiment. Figure 2 The structures and cascade relationship of the control unit 210 and the control unit 220 are similar. For details, please refer to the description of the structures and cascade relationship of the control unit 210 and the control unit 220 in the aforementioned embodiment, which will not be repeated here.

[0044] In a feasible embodiment, it is also possible to implement address writing, parameter writing, or controlling the LED light string to play content data in a pure hardware manner. Figure 3As shown, the first controller 220 can be replaced by a NOT gate 310, and the second controller 260 can be replaced by a NOT gate 320. It can be understood that the NOT gate is a basic logic gate in a digital circuit, also called an inverter or an inverting gate. The NOT gate can be used to invert the input signal, that is, when the input is 1, the output is 0; when the input is 0, the output is 1.

[0045] In a feasible embodiment, the NOT gate 310 can automatically switch the first data module 230 and the second data module 240 according to the control data input by the code writer 100, so as to selectively output the code data or the normal playback content data. For example, when the control signal in the control data received by the NOT gate 310 is 1, the code data can be output to the LED light string 300 to write the address and parameters of the LED light string 300; when the control signal in the control data received by the NOT gate 310 is 0, the content data can be output to the LED light string 300 to control the LED light string 300 to play the content data normally. It should be noted that the subsequent processing of the received control signal is not limited here and can be set according to the specific situation.

[0046] In a possible embodiment, if Figure 4 As shown, the control unit group 200 may further include a control unit 410 and a control unit 420, wherein both the control unit 410 and the control unit 420 may be light-controlled, and the control unit 410 includes a third controller 411, a first switch module 412 and an LED light string 413, wherein the code writer 100 is connected to the first switch module 412, and the third controller 411 is connected to the first switch module 412, thereby, the first switch module 412 can receive the code writing data sent by the code writer 100, and the third controller 411 and the first switch module 412 can exchange and communicate data. When the first switch module 412 receives the coding data, the first switch module 412 can parse the coding data to obtain the corresponding first instruction data. It should be noted that these first instruction data may include requirements for modifying the brightness, color and other properties of the LED light. Then, the first switch module 412 can generate a corresponding control signal or data frame according to the first instruction data, and send it to the third controller 411. After the third controller 411 receives the control signal or data frame from the first switch module 412, it can control the LED drive circuit according to the received signal to adjust the brightness, color and other properties of the LED light string 413, so that the control unit 410 has the functions of coding and parameter writing. Figure 4In the embodiment, the control unit 420 may also include a fourth controller 414, a second switch module 415 and an LED light string 416. It should be noted that the connection method of the internal structure of the control unit 420 is similar to that of the control unit 410, and the communication method of the internal structure is also similar to that of the internal structure of the control unit 410, which will not be described in detail here. Figure 4 As shown, the control unit 410 and the control unit 420 are cascaded. Specifically, the second switch module 415 is connected to the first switch module 412 through a signal line. It can be understood that through the connection between the second switch module 415 and the first switch module 412, data exchange and coordination between the control unit 410 and the control unit 420 can be achieved, thereby improving the overall performance and functional scalability of the lighting control system. Figure 4 As shown, after the second switch module 415 is connected to the first switch module 412, the second switch module 415 can receive the code writing data forwarded by the first switch module 412, and the second switch module 415 can obtain the corresponding second instruction data after parsing the code writing data. Then, the second switch module 415 can generate a corresponding control signal or data frame according to the second instruction data, and send it to the fourth controller 414; after the fourth controller 414 receives the control signal or data frame from the first switch module 412, it can adjust the brightness, color and other properties of the LED light string 416 by controlling the LED driving circuit according to the received signal, so that the control unit 420 has the function of writing codes and writing parameters.

[0047] In one embodiment, the first instruction data and the second instruction data may be the same data or different data, and the user may set a corresponding program to parse the coding data according to actual needs, so as to obtain suitable instruction data.

[0048] It is understandable that, in the process of sending specific instructions so that the third controller 411 can recognize and communicate with the code writer 100, the corresponding communication protocol or address information can be set on the first switch module 412 first, so as to exchange data with the code writer 100. Similarly, the corresponding communication protocol or address information can also be set on the second switch module 415, so as to communicate with the first switch module 412.

[0049] The embodiment of the present application utilizes the combination of the code writer 100 and the control unit 410 to connect the code writer 100 to the control unit 410, so that the code writer 100 can send code writing data to the first switch module 412 of the control unit 410 through the data line. After receiving the code writing data, the first switch module 412 can exchange and communicate data with the third controller 411, so that the third controller 411 can adjust the brightness, color and other properties of the LED light string 413 by controlling the LED driving circuit according to the received signal sent by the first switch module 412, so that the control unit 410 has the functions of writing codes and writing parameters. Since the code writer 100 can be connected to the control unit 410 and send code writing data to the control unit 410, the control unit 410 can also forward the code writing data to the control unit 420 connected thereto, so that the control unit 420 also has the functions of writing codes and writing parameters. It can be seen that in the circuit in which the control unit 410 and the control unit 420 are cascaded, by connecting the coder 100 to the control unit 410, the LED lamps connected to the control units 410 and 420 can be coded and parameterized, thereby solving the troubles in debugging the LED lighting project.

[0050] In a possible embodiment, if Figure 5 As shown, the control unit group 200 may further include a control unit 510 and a control unit 520, wherein the control unit 510 may be a master control without a light, and the control unit 520 may be a sub-controller with a light. The control unit 510 includes a fifth controller 511 and a third switch module 512, and the control unit 520 includes a sixth controller 513, a fourth switch module 514 and an LED light string 515, as shown in FIG. Figure 5 As shown, the third switch module 512 is connected to the code writer 100 through a data line, and the control unit 510 and the control unit 520 are cascaded. Specifically, the third switch module 512 can be connected to the fourth switch module 514 through a cascade signal line. When the third switch module 512 receives the code writing data sent by the code writer 100, it can forward the code writing data to the fourth switch module 514. After the fourth switch module 514 receives the code writing data, it can parse the code writing data to obtain the corresponding third instruction data. Then, the fourth switch module 514 can generate a corresponding control signal or data frame according to the third instruction data, and send it to the sixth controller 513; after the sixth controller 513 receives the control signal or data frame from the fourth switch module 514, it can control the LED driving circuit according to the received signal to adjust the brightness, color and other properties of the LED light string 515, so that the control unit 520 has the functions of writing code and writing parameters.

[0051] In a feasible embodiment, after parsing the writing code data, the third switch module 512 can extract the third instruction data and send the third instruction data to the fifth controller 511. When the fifth controller 511 receives the third instruction data and processes the data, it can generate corresponding response data and feed the response data back to the third switch module 512. In this way, communication between the third switch module 512 and the fifth controller 511 can be achieved.

[0052] In a feasible embodiment, the fourth switch module 514 may also send feedback data to the third switch module 512. For example, after receiving the coding data, the fourth switch module 514 may process the coding data accordingly and generate response data, which may be sent by the fourth switch module 514 to the third switch module 512 for further processing by the third switch module 512.

[0053] The embodiment of the present application utilizes the combination of the code writer 100 and the control unit 510 to connect the code writer 100 to the control unit 510, so that the code writer 100 can send code writing data to the control unit 510 through the data line. After the control unit 510 receives the code writing data, it can forward the code writing data to the fourth switch module 514 of the control unit 520 cascaded therewith through the third switch module 512. When the fourth switch module 514 receives the code writing data, it can exchange and communicate data with the sixth controller 513, so that the sixth controller 5131 can adjust the brightness, color and other properties of the LED light string by controlling the LED driving circuit according to the signal sent by the fourth switch module 514.

[0054] In one embodiment, the code writer 100 supports wireless communication, such as WiFi or Bluetooth communication, and the code writer 100 can realize the debugging of the LED light string in a wireless manner. After ensuring that the wireless connection between the code writer 100 and the control unit is stable, the code writer 100 can be connected to the control device (such as a smart phone, computer, etc.) through wireless communication such as WiFi or Bluetooth, and then the corresponding application is used on the control device to send a control instruction to the code writer 100 through a wireless connection. After receiving the control instruction, the code writer 100 can send the control instruction to the control unit wirelessly connected thereto, so that the control unit can realize the debugging of the brightness, color and other properties of the LED light string connected thereto.

[0055] In one embodiment, the code writer 100 can also directly debug the LED light string wirelessly. After ensuring that the wireless connection between the code writer 100 and the LED light string is stable, a control instruction is sent to the code writer 100 by using an application of a control device wirelessly connected to the code writer 100. After receiving the control instruction, the code writer 100 can control the brightness, color and other parameters of the LED light according to the control instruction, thereby realizing the debugging and control of the LED.

[0056] The preferred embodiments of the present invention are described above with reference to the accompanying drawings, but the scope of the rights of the present invention is not limited thereto. Any modification, equivalent substitution and improvement made by a person skilled in the art without departing from the scope and essence of the present invention should be within the scope of the rights of the present invention.

Claims

1. A cascade circuit for an LED light string, characterized in that: include: A code writer, a control unit group, and multiple groups of light strings; the control unit group includes multiple control units, the control units are cascaded, and the control units are connected to the light strings; the code writer is used to send code writing data and control data to the control unit; the control unit is used to forward the code writing data, and selectively send code writing data or content data to the light strings according to the control data; The control unit group includes a first control unit and a second control unit. The first control unit includes a first controller, a first data module and a second data module. The code writer is connected to the first controller and the first data module respectively. The first data module is used to receive the first code writing data sent by the code writer. The first controller is used to receive the first control data sent by the code writer, and control the first data module and the second data module according to the first control data, and selectively send the code writing data or content data to the light string; the second control unit includes a second controller, a third data module and a fourth data module. The third data module is connected to the first data module, and the third data module is used to receive and store the second code writing data sent by the first data module. The second controller is connected to the first controller, and the second controller is used to receive the control data transmitted by the first controller, and control the third data module and the fourth data module according to the second control data transmitted by the first controller, and selectively send the code writing data or content data to the light string.

2. The cascade circuit according to claim 1, characterized in that: The first control unit also includes an output interface, which is connected to the first data module and the second data module, and is used to forward coding data or content data to the light string.

3. A cascade circuit for an LED light string, characterized in that: include: A code writer, a control unit group, and multiple groups of light strings; the control unit group includes multiple control units, the control units are cascaded, and the control units are connected to the light strings; the code writer is used to send code writing data and control data to the control unit; the control unit is used to forward the code writing data, and selectively send code writing data or content data to the light strings according to the control data; The control unit group includes a third control unit and a fourth control unit, the third control unit includes a third controller and a first switch module, the first switch module is connected to the third controller; the first switch module is used to receive the writing data of the code writer, and send first instruction data to the third controller according to the writing data; the third controller is used to exchange and communicate data with the first switch module according to the first instruction data; the fourth control unit includes a second switch module and a fourth controller, the first switch module is connected to the second switch module, the second switch module is used to receive the output data of the first switch module, and send second instruction data to the fourth controller according to the output data, and the fourth controller is used to perform the writing code or writing parameter function on the light string according to the second instruction data.

4. The cascade circuit according to claim 3, characterized in that: The fourth controller is further configured to perform data exchange and communication with the second switch module according to the second instruction data.

5. The cascade circuit according to claim 3, characterized in that: The first switch module is used to receive feedback data from the second switch module.

6. The cascade circuit according to claim 1 or 3, characterized in that: The cascade circuit includes at least one group of signal lines.

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