CN113645732B - Control circuit and control method for multiple groups of light-emitting diode lamp strings - Google Patents

Control circuit and control method for multiple groups of light-emitting diode lamp strings Download PDF

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CN113645732B
CN113645732B CN202010391715.XA CN202010391715A CN113645732B CN 113645732 B CN113645732 B CN 113645732B CN 202010391715 A CN202010391715 A CN 202010391715A CN 113645732 B CN113645732 B CN 113645732B
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黄宗文
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Anapex Technology Inc
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Abstract

The invention relates to a control circuit and a control method for a plurality of groups of LED lamp strings. A control circuit of a plurality of groups of light emitting diodes comprises a light emitting diode lamp string group, a controller and at least one identification resistor, wherein the light emitting diode lamp string group comprises a plurality of light emitting diode lamp strings which are connected in series through a single serial line, each light emitting diode lamp string group comprises at least one light emitting diode module, each light emitting diode module comprises a light emitting diode chip and a driving circuit which is electrically connected with the light emitting diode chip, the controller is electrically connected with the light emitting diode lamp string group, and the identification resistor is electrically connected with the serial line and is positioned behind an output end of the light emitting diode module. The driving circuit outputs a feedback signal and transmits the feedback signal back to the controller, the feedback signal passing through and not passing through the identification resistor has a different signal level, and the controller distinguishes different LED modules according to the signal level.

Description

一种多组发光二极管灯串的控制电路及控制方法A control circuit and control method for multiple groups of light-emitting diode light strings

技术领域Technical field

本发明关于一种发光二极管的控制电路及控制方法,尤指一种多组发光二极管的控制电路及控制方法。The present invention relates to a control circuit and a control method for a light-emitting diode, and in particular, to a control circuit and a control method for multiple groups of light-emitting diodes.

背景技术Background technique

发光二极管具有发光效率高、体积轻巧以及不易损坏等特性,已普遍地使用于日常照明领域,且随着使用需求的变化,于照明组件中设置不同数量与颜色的发光二极管也已成为常态,同时为了控制这些数量与颜色不同的发光二极管产生不同的发光效果,控制电路也一并设置于发光二极管电路之中。Light-emitting diodes have the characteristics of high luminous efficiency, light size and not easy to be damaged. They have been widely used in the field of daily lighting. With the changes in usage requirements, it has become normal to install different numbers and colors of light-emitting diodes in lighting components. At the same time, In order to control these light-emitting diodes with different numbers and colors to produce different lighting effects, a control circuit is also provided in the light-emitting diode circuit.

在众多的应用范畴中,其中之一乃包含多个发光二极管芯片的灯串,该灯串可再以串接或并接的方式多个组合,以达到不同发光效果的目的。例如,美国发明专利公告第US10,429,016号公开一种具有稳定电流的发光二极管灯串,该发光二极管灯串具有一插头、一插座、一连接在该插头和该插座之间的照明灯串以及一设置在该插头或该插座中的控制电路。该控制电路使用至少一电流控制器来稳定地控制流经该灯串的驱动电流。当该灯串的温度超过阈值时,该电流控制器启动过热保护功能以降低驱动电流;当照明灯串发生短路时,该电流控制器会启动短路保护功能以降低驱动电流。Among the many application areas, one of them is a light string containing multiple light-emitting diode chips. The light string can be combined in series or parallel to achieve different lighting effects. For example, U.S. Invention Patent Publication No. US10,429,016 discloses a light-emitting diode light string with stable current. The light-emitting diode light string has a plug, a socket, a lighting string connected between the plug and the socket, and A control circuit provided in the plug or socket. The control circuit uses at least one current controller to stably control the driving current flowing through the light string. When the temperature of the lighting string exceeds the threshold, the current controller activates the overheat protection function to reduce the driving current; when the lighting string is short-circuited, the current controller activates the short-circuit protection function to reduce the driving current.

而在多个发光二极管灯串的组合应用中,该发光二极管灯串的数量众多,为达多样化的发光效果,则需要对该些发光二极管灯串的每个发光二极管芯片进行定序,例如在组装成发光二极管灯串前,先对每个发光二极管芯片写进不同地址的数据,且组装时需按照该数据对应的地址做放置,不仅方法繁复,且成本高昂,实用性不高;且当欲扩充而额外串接或并接发光二极管灯串时,将因不知道地址数据而无法产生特殊的发光效果。In the combined application of multiple LED light strings, there are a large number of LED light strings. In order to achieve diversified lighting effects, each LED chip of these LED light strings needs to be sequenced, for example. Before assembling a LED light string, each LED chip must be written with data at different addresses, and must be placed according to the address corresponding to the data during assembly. This method is not only complicated, but also costly and not very practical; and When additional LED light strings are connected in series or parallel for expansion, special lighting effects cannot be produced because the address data is not known.

发明内容Contents of the invention

本发明的主要目的在于解决现有发光二极管灯串当多组串接或并接时,难以定序而产生不同发光效果的问题。The main purpose of the present invention is to solve the problem that existing LED light strings are difficult to sequence and produce different lighting effects when multiple groups are connected in series or in parallel.

为达上述目的,本发明提供一种多组发光二极管灯串的控制电路,包括有:一发光二极管灯串组,包括多个通过一单一串接线彼此串接的发光二极管灯串,该发光二极管灯串分别包括至少一发光二极管模块,该发光二极管模块分别包括一发光二极管芯片以及一电性连接该发光二极管芯片的驱动电路;一控制器,通过该串接线电性连接该发光二极管灯串组;以及至少一识别电阻,电性连接于该串接线且位于该发光二极管模块的一输出端之后;其中,该发光二极管芯片的该驱动电路依序分别输出一反馈信号并通过该串接线回传给该控制器,经过和未经过该识别电阻的该反馈信号具有相异的一信号位准,该控制器根据该信号位准而分辨不同的该发光二极管模块。In order to achieve the above object, the present invention provides a control circuit for multiple groups of LED light strings, including: a LED light string group, including a plurality of LED light strings connected in series with each other through a single string connection. The light strings each include at least one light-emitting diode module. The light-emitting diode modules respectively include a light-emitting diode chip and a drive circuit electrically connected to the light-emitting diode chip; a controller is electrically connected to the light-emitting diode light string group through the series wiring. ; and at least one identification resistor, electrically connected to the series wire and located after an output end of the light-emitting diode module; wherein, the drive circuit of the light-emitting diode chip sequentially outputs a feedback signal and returns it through the series wire To the controller, the feedback signal passing through and not passing through the identification resistor has a different signal level, and the controller distinguishes different light-emitting diode modules according to the signal level.

一种多组发光二极管灯串的控制电路,包括有:至少一第一发光二极管灯串,包括至少一通过一单一第一串接线彼此串接的第一发光二极管模块,该第一发光二极管模块分别包括一第一发光二极管芯片以及一电性连接该第一发光二极管芯片的第一驱动电路;至少一第二发光二极管灯串,包括至少一通过一单一第二串接线彼此串接的第二发光二极管模块,该第二发光二极管模块分别包括一第二发光二极管芯片以及一电性连接该第二发光二极管芯片的第二驱动电路;一控制器,通过该第一和该第二串接线电性连接该第一和该第二发光二极管灯串;以及至少一识别电阻,电性连接于该第一或该第二串接线且位于该第一或该第二发光二极管模块的一输出端之后;其中,该第一和该第二驱动电路依序分别输出一反馈信号并通过该第一和该第二串接线回传给该控制器,经过和未经过该识别电阻的该反馈信号系具有相异的一信号位准,该控制器根据该信号位准而分辨不同的该发光二极管模块。A control circuit for multiple groups of light-emitting diode light strings, including: at least one first light-emitting diode light string, including at least one first light-emitting diode module connected in series with each other through a single first series connection, the first light-emitting diode module Each includes a first light-emitting diode chip and a first driving circuit electrically connected to the first light-emitting diode chip; at least one second light-emitting diode light string, including at least one second light-emitting diode light string connected in series with each other through a single second string connection. A light-emitting diode module, the second light-emitting diode module respectively includes a second light-emitting diode chip and a second driving circuit electrically connected to the second light-emitting diode chip; a controller, electrically connected through the first and second series wiring electrically connected to the first and second LED strings; and at least one identification resistor, electrically connected to the first or second string connection and located behind an output end of the first or second LED module ; Wherein, the first and second driving circuits respectively output a feedback signal in sequence and transmit it back to the controller through the first and second series connections. The feedback signal that passes through and does not pass through the identification resistor has A different signal level, the controller distinguishes different light-emitting diode modules according to the signal level.

一种多组发光二极管灯串的控制方法,包括以下步骤:步骤1:提供一发光二极管电路,包括一发光二极管灯串组、一控制器以及一识别电阻,该发光二极管灯串组包括多个以一连接线彼此电性连接的发光二极管灯串,该控制器电性连接至该发光二极管灯串,该识别电阻电性连接于于其中一个该发光二极管模块的一输出端之后;步骤2:在该连接在线的该发光二极管模块依序地分别输出一反馈信号并通过该连接线回传给该控制器;步骤3:经过和未经过该识别电阻的该反馈信号具有相异的一信号位准,该控制器根据该信号位准而分辨不同的该发光二极管模块。A control method for multiple groups of LED light strings, including the following steps: Step 1: Provide a LED circuit, including a LED light string group, a controller and an identification resistor. The LED light string group includes multiple The LED light strings are electrically connected to each other with a connecting wire, the controller is electrically connected to the LED light string, and the identification resistor is electrically connected behind an output end of one of the LED modules; Step 2: The light-emitting diode module on the connection line sequentially outputs a feedback signal and transmits it back to the controller through the connection line; Step 3: The feedback signal that has passed through the identification resistor and has not passed through the identification resistor have a different signal bit. The controller distinguishes different light-emitting diode modules according to the signal level.

本发明利用该识别电阻的设置,让每一段的发光二极管灯串所回传的该反馈信号具有相异的信号位准,以供该控制器根据该信号位准而分辨不同的该发光二极管灯串,从而对不同段的该发光二极管灯串给予不同的信号,而达到特定的发光效果。另外,由于仅需设置该识别电阻,成本低且制造方便,将可在不大幅增加成本的情况下增加发光的多变性,且纵使额外以串接或并接方式扩充发光二极管灯串,也可以达到辨别的效果。The present invention uses the setting of the identification resistor to allow the feedback signal returned by each section of the LED light string to have a different signal level, so that the controller can distinguish different LED lights based on the signal level. string, thereby giving different signals to different segments of the LED string to achieve a specific lighting effect. In addition, since only the identification resistor is required, the cost is low and the manufacturing is easy. The variability of light emission can be increased without significantly increasing the cost, and even if the LED light string is expanded in series or parallel, it can achieve the effect of identification.

附图说明Description of drawings

图1为根据本发明一实施例的电路架构示意图。FIG. 1 is a schematic diagram of a circuit architecture according to an embodiment of the present invention.

图2为图1的发光二极管灯串的电路架构示意图。FIG. 2 is a schematic diagram of the circuit structure of the LED light string of FIG. 1 .

图3为根据本发明另一实施例的电路架构示意图。FIG. 3 is a schematic diagram of a circuit architecture according to another embodiment of the present invention.

具体实施方式Detailed ways

有关本发明的详细说明及技术内容,现就配合图式说明如下。The detailed description and technical content of the present invention are described below with reference to the drawings.

图1为根据本发明一实施例的电路架构示意图,图1示出一多组发光二极管灯串的控制电路,包括一发光二极管灯串组10、一控制器20以及至少一识别电阻30,该发光二极管灯串组10包括多个发光二极管灯串,在本实施例中,该发光二极管灯串包括一第一发光二极管灯串10a、一第二发光二极管灯串10b以及一第三发光二极管灯串10c,该第一发光二极管灯串10a、该第二发光二极管灯串10b以及该第三发光二极管灯串10c通过一单一串接线40彼此串接,且该发光二极管灯串通过该串接线40电性连接该控制器20,由此形成一串接关系。其中,该发光二极管灯串分别包括至少一发光二极管模块,在本实施例中,该第一发光二极管灯串10a包括四个发光二极管模块,分别标示为a-1、a-2、a-3、a-4,该第二发光二极管灯串10b包括三个发光二极管模块,分别标示为b-1、b-2、b-3,该第三发光二极管灯串10c包括四个发光二极管模块,分别标示为c-1、c-2、c-3、c-4。Figure 1 is a schematic diagram of a circuit architecture according to an embodiment of the present invention. Figure 1 shows a control circuit for multiple groups of LED light strings, including an LED light string group 10, a controller 20 and at least one identification resistor 30. The LED light string group 10 includes a plurality of LED light strings. In this embodiment, the LED light string includes a first LED light string 10a, a second LED light string 10b and a third LED light string. String 10c, the first LED light string 10a, the second LED light string 10b and the third LED light string 10c are connected in series to each other through a single series wire 40, and the LED light string passes through the series wire 40 The controller 20 is electrically connected to form a series connection. The LED light strings each include at least one LED module. In this embodiment, the first LED light string 10a includes four LED modules, respectively labeled a-1, a-2, and a-3. , a-4, the second LED light string 10b includes three light-emitting diode modules, marked b-1, b-2, b-3 respectively, and the third LED light string 10c includes four light-emitting diode modules, They are marked as c-1, c-2, c-3 and c-4 respectively.

请进一步参阅图2,该第一发光二极管灯串10a包括有多个发光二极管模块11a、12a、13a、14a,而该发光二极管模块11a、12a、13a、14a分别包括一发光二极管芯片111a、121a、131a、141a以及一驱动电路112a、122a、132a、142a,该驱动电路112a、122a、132a、142a串接于该串接线40,而该发光二极管芯片111a、121a、131a、141a电性连接该驱动电路112a、122a、132a、142a。在本发明中,该发光二极管模块进一步包括一反馈线路,以该发光二极管模块11b举例说明,该发光二极管模块11b还包括一反馈线路113b,该反馈线路113b设置于该发光二极管模块11b内,包括一第一反馈段1131b以及一第二反馈段1132b,该第一反馈段1131b连接于该驱动电路112b的一输出端1121b以及一反馈输入端1122b之间,而该第二反馈段1132b连接于该驱动电路112b的一输入端1123b以及一反馈输出端1124b之间,由此对该驱动电路112b形成一位于该发光二极管模块11b内的反馈路径。Please further refer to FIG. 2. The first LED light string 10a includes a plurality of LED modules 11a, 12a, 13a, and 14a. The LED modules 11a, 12a, 13a, and 14a respectively include a LED chip 111a and 121a. , 131a, 141a and a driving circuit 112a, 122a, 132a, 142a. The driving circuit 112a, 122a, 132a, 142a is connected in series to the series wire 40, and the light-emitting diode chip 111a, 121a, 131a, 141a is electrically connected to the Driving circuits 112a, 122a, 132a, 142a. In the present invention, the LED module further includes a feedback circuit. Taking the LED module 11b as an example, the LED module 11b also includes a feedback circuit 113b. The feedback circuit 113b is provided in the LED module 11b and includes A first feedback section 1131b and a second feedback section 1132b. The first feedback section 1131b is connected between an output terminal 1121b and a feedback input terminal 1122b of the driving circuit 112b, and the second feedback section 1132b is connected between the Between an input terminal 1123b and a feedback output terminal 1124b of the driving circuit 112b, a feedback path within the LED module 11b is formed for the driving circuit 112b.

如图1所示,该识别电阻30包括一第一识别电阻30a、一第二识别电阻30b以及一第三识别电阻30c,在本发明中,该识别电阻30电性连接于该串接线40且位于该发光二极管模块的一输出端之后,具体来说,该识别电阻30位于该发光二极管灯串中,最末端的该发光二极管模块的该输出端之后,或者可定义为该识别电阻30位于该发光二极管灯串组中,第二个该发光二极管灯串的一输入端之前。如图2所示,该第一识别电阻30a电性连接在该串接线40上,且位于该发光二极管模块14a的该输出端之后(该发光二极管模块11b的该输入端1123b之前)。As shown in Figure 1, the identification resistor 30 includes a first identification resistor 30a, a second identification resistor 30b and a third identification resistor 30c. In the present invention, the identification resistor 30 is electrically connected to the series wire 40 and Located after an output end of the LED module, specifically, the identification resistor 30 is located in the LED light string, behind the output end of the end LED module, or it can be defined as the identification resistor 30 is located at the In the LED light string group, the second LED light string is in front of an input end. As shown in FIG. 2 , the first identification resistor 30a is electrically connected to the series line 40 and is located behind the output end of the LED module 14a (in front of the input end 1123b of the LED module 11b).

在操作上,该控制电路具有一启动模式以及一检测模式,于该启动模式,该控制器20通过该串接线40传送一启动指令给该发光二极管模块11a、12a、13a、14a、11b,控制该发光二极管模块11a、12a、13a、14a、11b发光;而在该检测模式,该驱动电路112a、122a、132a、142a、112b会依序通过该反馈路径以及该串接线40输出一反馈信号给该控制器20。由于本发明在该串接线40上设置该识别电阻30,经过和未经过该识别电阻30的该反馈信号具有相异的一信号位准,该控制器20可根据该信号位准而分辨不同的该发光二极管模块。进一步地,对于该驱动电路112a、122a、132a、142a依序通过该反馈路径以及该串接线40回传的该反馈信号来说,由于在该发光二极管模块14a之前未设置有该识别电阻,故该反馈信号不会经过该识别电阻;对于该驱动电路112b通过该反馈路径以及该串接线40回传的该反馈信号来说,由于在该发光二极管模块11b之前设置有该第一识别电阻30a,故该反馈信号会经过该识别电阻。因此,该控制器20接收到该驱动电路112a、122a、132a、142a回传的该反馈信号具有一第一信号位准,该控制器20接收到该驱动电路112b回传的该反馈信号具有一第二信号位准,该第一信号位准对应的该发光二极管模块11a、12a、13a、14a定义为一第一群组,该第二信号位准对应的该发光二极管模块11b定义为一第二群组。如此一来,该控制器20可以知道每一段的该发光二极管灯串的发光二极管模块的数量,从而对不同段的该发光二极管灯串给予不同的信号,而达到特定的发光效果。In operation, the control circuit has a startup mode and a detection mode. In the startup mode, the controller 20 sends a startup command to the LED modules 11a, 12a, 13a, 14a, 11b through the series wire 40 to control The light emitting diode modules 11a, 12a, 13a, 14a, 11b emit light; and in the detection mode, the driving circuit 112a, 122a, 132a, 142a, 112b will sequentially output a feedback signal through the feedback path and the series wire 40 to The controller 20. Since the present invention sets the identification resistor 30 on the series line 40, the feedback signals that pass through the identification resistor 30 and those that do not pass through the identification resistor 30 have different signal levels, and the controller 20 can distinguish different signal levels according to the signal levels. The LED module. Further, for the feedback signal returned by the driving circuit 112a, 122a, 132a, and 142a sequentially through the feedback path and the series line 40, since the identification resistor is not provided before the light-emitting diode module 14a, The feedback signal will not pass through the identification resistor; for the feedback signal returned by the driving circuit 112b through the feedback path and the series line 40, since the first identification resistor 30a is provided before the light-emitting diode module 11b, Therefore, the feedback signal will pass through the identification resistor. Therefore, the controller 20 receives the feedback signal returned from the driving circuit 112a, 122a, 132a, 142a with a first signal level, and the controller 20 receives the feedback signal returned from the driving circuit 112b with a first signal level. The second signal level, the LED modules 11a, 12a, 13a, 14a corresponding to the first signal level are defined as a first group, and the LED module 11b corresponding to the second signal level is defined as a first group. Two groups. In this way, the controller 20 can know the number of LED modules in each section of the LED light string, and thereby provide different signals to the LED light strings in different sections to achieve a specific lighting effect.

请参阅图3,为根据本发明另一实施例的电路架构示意图,图3示出的多组发光二极管灯串的控制电路包括一第一发光二极管灯串组10、一第二发光二极管灯串50、一第三发光二极管灯串60、一控制器20以及至少一识别电阻,本实施例是以多个发光二极管灯串组彼此并接举例说明,本实施例与上述实施例的差异为,该第一发光二极管灯串组10通过一单一串接线40a彼此串接,该第二发光二极管灯串50通过一单一串接线40b彼此串接,该第三发光二极管灯串60通过一单一串接线40c彼此串接,而该第一发光二极管灯串组10、该第二发光二极管灯串50以及该第三发光二极管灯串60彼此并接。该第一发光二极管灯串组10包括多个发光二极管灯串10a、10b,该第二发光二极管灯串组50包括多个发光二极管灯串50a、50b、50c,该第三发光二极管灯串60包括多个发光二极管灯串60a、60b。Please refer to FIG. 3 , which is a schematic diagram of a circuit architecture according to another embodiment of the present invention. The control circuit of multiple groups of LED light strings shown in FIG. 3 includes a first LED light string group 10 and a second LED light string. 50. A third LED light string 60, a controller 20 and at least one identification resistor. In this embodiment, multiple LED light string groups are connected in parallel to each other. The difference between this embodiment and the above embodiment is that, The first LED light string group 10 is connected in series to each other through a single series connection 40a, the second LED light string 50 is connected in series to each other through a single series connection 40b, and the third LED light string 60 is connected in series through a single series connection 40c are connected in series with each other, and the first LED light string group 10, the second LED light string 50 and the third LED light string 60 are connected in parallel with each other. The first LED light string group 10 includes a plurality of LED light strings 10a, 10b. The second LED light string group 50 includes a plurality of LED light strings 50a, 50b, 50c. The third LED light string 60 It includes multiple LED light strings 60a and 60b.

每个发光二极管灯串中,最末端的该发光二极管模块的该输出端之后电性连接有该识别电阻。该第一识别电阻30a、该第二识别电阻30b分别设置于该发光二极管灯串10a、10b之中;该识别电阻31a、31b、31c分别设置于该发光二极管灯串50a、50b、50c之中;该识别电阻32a、32b分别设置于该发光二极管灯串60a、60b之中。如此一来,该控制器20可以知道每一段的该发光二极管灯串的发光二极管模块的数量,从而对不同段的该发光二极管灯串给予不同的信号,而达到特定的发光效果。In each LED light string, the identification resistor is electrically connected behind the output end of the LED module at the end. The first identification resistor 30a and the second identification resistor 30b are respectively provided in the LED light strings 10a and 10b; the identification resistors 31a, 31b and 31c are respectively provided in the LED light strings 50a, 50b and 50c. ; The identification resistors 32a and 32b are respectively provided in the LED light strings 60a and 60b. In this way, the controller 20 can know the number of LED modules in each section of the LED light string, thereby giving different signals to the LED light strings in different sections to achieve a specific lighting effect.

Claims (6)

1.一种多组发光二极管灯串的控制电路,其特征在于,包括有:1. A control circuit for multiple groups of LED light strings, characterized by including: 一发光二极管灯串组,包括多个通过一单一串接线彼此串接的发光二极管灯串,该发光二极管灯串分别包括至少一发光二极管模块,该发光二极管模块分别包括一发光二极管芯片以及一电性连接该发光二极管芯片的驱动电路;A light-emitting diode light string group includes a plurality of light-emitting diode light strings connected in series with each other through a single series connection. The light-emitting diode light strings each include at least one light-emitting diode module. The light-emitting diode modules each include a light-emitting diode chip and a circuit. Sexually connected to the drive circuit of the light-emitting diode chip; 一控制器,通过该串接线电性连接该发光二极管灯串组;以及A controller electrically connected to the LED light string group through the series wire; and 至少一识别电阻,电性连接于该串接线且位于该发光二极管模块的一输出端之后;At least one identification resistor is electrically connected to the series wire and located after an output end of the light-emitting diode module; 其中,该发光二极管芯片的该驱动电路依序分别输出一反馈信号并通过该串接线回传给该控制器,经过和未经过该识别电阻的该反馈信号具有相异的一信号位准,该控制器根据该信号位准而分辨不同的该发光二极管模块。Wherein, the driving circuit of the light-emitting diode chip sequentially outputs a feedback signal and transmits it back to the controller through the series connection. The feedback signal passing through the identification resistor and the feedback signal not passing through the identification resistor have a different signal level. The controller distinguishes different light-emitting diode modules according to the signal level. 2.一种多组发光二极管灯串的控制电路,其特征在于,包括有:2. A control circuit for multiple groups of LED light strings, characterized in that it includes: 至少一第一发光二极管灯串,包括至少一通过一单一第一串接线彼此串接的第一发光二极管模块,该第一发光二极管模块分别包括一第一发光二极管芯片以及一电性连接该第一发光二极管芯片的第一驱动电路;At least one first LED light string includes at least one first LED module connected in series with each other through a single first series connection. The first LED modules each include a first LED chip and an electrically connected first LED chip. a first driving circuit of a light-emitting diode chip; 至少一第二发光二极管灯串,包括至少一通过一单一第二串接线彼此串接的第二发光二极管模块,该第二发光二极管模块分别包括一第二发光二极管芯片以及一电性连接该第二发光二极管芯片的第二驱动电路;At least one second light-emitting diode light string includes at least one second light-emitting diode module connected in series with each other through a single second series wire. The second light-emitting diode module respectively includes a second light-emitting diode chip and an electrical connection to the first a second driving circuit for two light-emitting diode chips; 一控制器,通过该第一串接线和该第二串接线电性连接该第一发光二极管灯串和该第二发光二极管灯串;以及A controller electrically connects the first LED light string and the second LED light string through the first series connection and the second series connection; and 至少一识别电阻,电性连接于该第一串接线或该第二串接线且位于该第一发光二极管模块或该第二发光二极管模块的一输出端之后;At least one identification resistor is electrically connected to the first series wire or the second series wire and is located behind an output end of the first LED module or the second LED module; 其中,该第一驱动电路和该第二驱动电路依序分别输出一反馈信号并通过该第一串接线和该第二串接线回传给该控制器,经过和未经过该识别电阻的该反馈信号具有相异的一信号位准,该控制器根据该信号位准而分辨不同的该发光二极管模块。Wherein, the first drive circuit and the second drive circuit respectively output a feedback signal in sequence and transmit it back to the controller through the first series connection and the second series connection. The feedback signal that passes through the identification resistor and does not pass through it The signals have different signal levels, and the controller distinguishes different light-emitting diode modules according to the signal levels. 3.一种多组发光二极管灯串的控制方法,其特征在于,包括以下步骤:3. A control method for multiple groups of LED light strings, characterized by including the following steps: 步骤1:提供一发光二极管电路,包括一发光二极管灯串组、一控制器以及一识别电阻,该发光二极管灯串组包括多个以一连接线彼此电性连接的发光二极管灯串,该发光二极管灯串分别包括至少一发光二极管模块,该控制器电性连接至该发光二极管灯串,该识别电阻电性连接于其中一个该发光二极管模块的一输出端之后;Step 1: Provide a light-emitting diode circuit, including a light-emitting diode light string group, a controller and an identification resistor. The light-emitting diode light string group includes a plurality of light-emitting diode light strings electrically connected to each other with a connecting wire. The diode light strings each include at least one light-emitting diode module, the controller is electrically connected to the light-emitting diode light string, and the identification resistor is electrically connected behind an output end of one of the light-emitting diode modules; 步骤2:在该连接在线的该发光二极管模块依序地分别输出一反馈信号并通过该连接线回传给该控制器;Step 2: The light-emitting diode modules on the connection line sequentially output a feedback signal and transmit it back to the controller through the connection line; 步骤3:经过和未经过该识别电阻的该反馈信号具有相异的一信号位准,该控制器根据该信号位准而分辨不同的该发光二极管模块。Step 3: The feedback signals that pass through the identification resistor and those that do not pass through the identification resistor have a different signal level, and the controller distinguishes different light-emitting diode modules based on the signal level. 4.根据权利要求3所述的控制方法,其特征在于,未经过该识别电阻的该反馈信号具有一第一信号位准,经过该识别电阻的该反馈信号具有一第二信号位准,该第一信号位准对应的该发光二极管模块定义为一第一群组,该第二信号位准对应的该发光二极管模块定义为一第二群组。4. The control method according to claim 3, wherein the feedback signal that does not pass through the identification resistor has a first signal level, and the feedback signal that passes through the identification resistor has a second signal level, the The light-emitting diode modules corresponding to the first signal level are defined as a first group, and the light-emitting diode modules corresponding to the second signal level are defined as a second group. 5.根据权利要求3所述的控制方法,其特征在于,该发光二极管灯串是以一单一串接线彼此串接。5. The control method according to claim 3, wherein the LED light strings are connected in series with each other through a single series connection. 6.根据权利要求3所述的控制方法,其特征在于,该发光二极管灯串以彼此并接。6. The control method according to claim 3, wherein the LED light strings are connected in parallel with each other.
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