DMX512 decoding circuit module based on series connection type lighting power supply

Abstract

The utility model discloses a DMX512 decoding circuit module based on series connection type lighting power supply, which comprises an electric input part, an electric output part and a decoding circuit electrically connected with the electric input part and the electric output part, the decoding circuit comprises a decoding module and an external connection plug electrically connected with the decoding module, the external connection plug is electrically connected with a female connection plug on a lamp panel in an inserted mode, and the female connection plug is electrically connected with the decoding module. When the external plug connector and the female plug connector are mutually plugged, the DMX512 decoding circuit module is connected to the outside of the lamp, the decoding module is electrically connected with LED lamp beads on a lamp panel of the lamp through the external plug connector and the female plug connector, and the decoding module can drive the LED lamp beads to be turned on and turned off. According to the utility model, the serial lighting of the lamp is realized, the design of the external connecting plug enables the decoding circuit to be electrically plugged with the female connecting plug on the lamp panel, jumper welding is avoided, the pseudo soldering probability is reduced, the manufacturing is easy, the production efficiency is high, the yield is ensured, the internal wiring of the lamp is replaced, the overall aesthetic degree of the lamp is greatly improved, and the lamp is convenient to disassemble and assemble; and product maintenance and upgrading are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of LED lighting, in particular to a DMX512 decoding circuit module based on serial lighting power supply. Background Art

[0002] With the development of science and technology and the improvement of economic level, people's demand for spiritual culture is constantly increasing, and the diversification and multi-colorization of LED lamps are also emerging in more and more occasions. In terms of architectural landscape lighting, several strip-shaped LED lamps are usually connected in series, sharing the same power supply to achieve the lighting effect of LED lamps in series. By intermittently turning on and off the lighting beads, the diversification of lighting colors and patterns is achieved. As a form of urban lighting beautification products, it appears in front of the people, giving people more spiritual enjoyment and visual impact.

[0003] In terms of lighting control technology, DMX512 is a widely used digital communication protocol for controlling stage lighting and other effect equipment. The DMX512 digital communication protocol sends control signals through serial communication lines and can control up to 512 channels of lighting equipment. In order to achieve effective control of DMX512 signals, it is usually necessary to design a special integrated control circuit.

[0004] However, the existing integrated control circuit is installed inside the strip LED lamp. In order to prevent voltage drop and signal attenuation, the power supply and signal of the LED lamp are connected in series. Connectors are provided at the external power supply and signal input and output ends of the lamp, and jumpers are added inside the lamp to connect to the input and output ends. This connection method is relatively complicated in the production process, with low production efficiency and difficult to guarantee yield. In addition, since the integrated control circuit is installed inside the lamp, it occupies the internal space of the lamp, and the number of jumpers inside the lamp is increased, the aesthetics of the lamp is greatly reduced, affecting the normal illumination of the light beam.

[0005] Therefore, it is urgent to propose a DMX512 decoding circuit module that overcomes the above problems. Utility Model Content

[0006] In view of the problems existing in the prior art, the utility model provides a DMX512 decoding circuit module based on serial lighting power supply. After adopting the DMX512 decoding circuit module, on the one hand, through the design of the electric input part and the electric output part of the DMX512 decoding circuit module, it is only necessary to connect the electric input parts and the electric output parts of several lighting fixtures in sequence, so as to realize the serial lighting of several lighting fixtures and realize the serial lighting function between the lighting fixtures;

[0007] On the other hand, the design of the external plug connector on the decoding circuit enables the decoding circuit to be electrically plugged into the female plug connector on the lamp board. This connection method avoids jumper welding during the production process, reduces the probability of false welding, is easy to implement and manufacture, has high production efficiency, and has a guaranteed yield rate. The external plug connector is electrically plugged into the female plug connector on the lamp board, replacing the internal wiring of the lamp, which does not affect the light beam of the lamp, and greatly improves the overall aesthetics of the lighting fixture.

[0008] In addition, when the external connector and the female connector are plugged into each other, the DMX512 decoding circuit module is connected to the outside of the lamp as a whole, which is not only convenient and efficient to disassemble and install, but also conducive to the subsequent maintenance and upgrading of the product, and the sustainability of the product is extended.

[0009] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0010] The present application proposes a DMX512 decoding circuit module based on serial lighting power supply, comprising an electrical input part, an electrical output part and a decoding circuit electrically connected to the electrical input part and the electrical output part, the decoding circuit comprising a decoding module and an external plug connector electrically connected to the decoding module, the external plug connector being electrically plugged into a female plug connector on a lamp board of a lamp, when the external plug connector and the female plug connector are plugged into each other, the DMX512 decoding circuit module is connected to the outside of the lamp, the decoding module is electrically connected to an LED lamp bead on the lamp board of the lamp through the external plug connector and the female plug connector, and the decoding module can drive the LED lamp bead to turn on and off;

[0011] The design of the above technical solution, on the one hand, through the design of the electric input part and the electric output part of the DMX512 decoding circuit module, it is only necessary to connect the electric input parts and the electric output parts of several lighting fixtures in sequence, so as to realize the series lighting of several lighting fixtures and realize their basic series lighting function;

[0012] On the other hand, the design of the external plug connector on the decoding circuit enables the decoding circuit to be electrically plugged into the female plug connector on the lamp board. This connection method avoids jumper welding during the production process, reduces the probability of false welding, is easy to implement and manufacture, has high production efficiency, and has a guaranteed yield rate. The external plug connector is electrically plugged into the female plug connector on the lamp board, replacing the internal wiring of the lamp, which does not affect the light beam of the lamp, and greatly improves the overall aesthetics of the lighting fixture.

[0013] In addition, when the external connector and the female connector are plugged into each other, the DMX512 decoding circuit module is connected to the outside of the lamp as a whole, which is not only convenient and efficient to disassemble and install, but also conducive to the subsequent maintenance and upgrading of the product, and the sustainability of the product is extended.

[0014] In order to solve the technical problem, the further technical solution adopted by the utility model is:

[0015] Optionally, in the above-mentioned DMX512 decoding circuit module, the electrical input part and the electrical output part share a power supply line and a ground line; the electrical input part and the electrical output part are electrically connected via a first differential signal line and a second differential signal line, the first differential signal line and the second differential signal line are respectively connected in series with a first resistor and a second resistor, the electrical input part has an address input signal line, the address input signal line is electrically connected to the PI address input terminal of the decoding module, and the electrical output part has an address output signal line, the address output signal line is electrically connected to the PO address output terminal of the decoding module;

[0016] The design of the above technical solution electrically connects the first differential signal line and the second differential signal line between the electrical input part and the electrical output part respectively, so that several lamps share two differential signal lines. The first resistor and the second resistor are respectively connected in series on the two differential signal lines, which can suppress stray signals on the signal lines and ensure that the signals can be recognized by the decoding modules of each lamp.

[0017] Further optionally, in the above-mentioned DMX512 decoding circuit module, a third resistor is connected in series between the address input signal line and the PI address input terminal of the decoding module, a fourth resistor is connected in series between the address output signal line and the PO address output terminal of the decoding module, a fifth resistor is connected in series between the first differential signal line and the AI ​​differential signal input terminal of the decoding module, and a sixth resistor is connected in series between the second differential signal line and the BI differential signal input terminal of the decoding module;

[0018] The design of the above technical solution, through the series connection design of the third resistor and the fourth resistor, can limit the leakage current and reduce the ground voltage. The fifth resistor and the sixth resistor serve as the decoding differential signal input resistors of the decoding module, which can suppress the stray signals on the signal line, thereby improving the signal accuracy and removing the common error interference, thereby ensuring that the signal can be recognized by the decoding module.

[0019] Further optionally, in the above-mentioned DMX512 decoding circuit module, the GND grounding terminal of the decoding module is grounded, the VDD power supply terminal of the decoding module is electrically connected to the first capacitor, the seventh resistor and the eighth resistor, the first capacitor is grounded, the seventh resistor is electrically connected to the eighth resistor in parallel, the eighth resistor is electrically connected to pin 1 of the external plug-in connector, the pin 1 of the external plug-in connector is also electrically connected to the second capacitor, the third capacitor and the ninth resistor electrically connected to the second capacitor and the third capacitor, the second capacitor and the third capacitor are connected in parallel and grounded, the ninth resistor is also connected in series with a diode, the positive electrode of the diode is electrically connected to the power line, the pin 2 of the external plug-in connector is electrically connected to the tenth resistor, the tenth resistor is electrically connected to the DO decoding forwarding signal terminal of the decoding module, and the pin 3 of the external plug-in connector is grounded;

[0020] In the design of the above technical solution, the first capacitor is a filter capacitor, the seventh resistor and the eighth resistor are power supply pull-up resistors at the VDD power supply end of the decoding module, the seventh resistor, the eighth resistor and the first capacitor are combined to provide a stable working voltage for the decoding module, the second capacitor and the third capacitor are filter capacitors, which mainly filter out high-frequency signals in the power line and provide stable voltage and current to the load, the ninth resistor is a low-resistance fuse resistor, whose function is to prevent the decoding module and the load from short-circuiting. If the decoding module is short-circuited or the load is short-circuited, the ninth resistor will be blown due to excessive current, and no open flame will occur, thereby protecting the normal operation of the power line. The main function of the diode is to use the unidirectional conduction performance of the diode to rectify the input power supply voltage and prevent damage to components caused by reverse connection of the power supply. The tenth resistor is the pin anti-interference resistor of the DO decoding forwarding signal end of the decoding module, providing high-quality decoding forwarding signals for the back-end load.

[0021] Further optionally, in the above-mentioned DMX512 decoding circuit module, the resistance values ​​of the third resistor and the fourth resistor are 510Ω, and the resistance values ​​of the fifth resistor and the sixth resistor are both 5.1kΩ;

[0022] Further optionally, in the above-mentioned DMX512 decoding circuit module, the diode is a Schottky rectifier diode, the capacitance of the second capacitor and the third capacitor are both 4.7 μF, the resistance of the seventh resistor and the eighth resistor are both 3.9 kΩ, 2.61 kΩ or 2 kΩ, the capacitance of the first capacitor is 0.1 μF, the resistance of the ninth resistor is 0.02 Ω, and the resistance of the tenth resistor is 510 Ω;

[0023] In the design of the above technical solution, the power supply voltage DC 24V, DC 15V or DC 12V is used to power the module through a diode. The diode adopts a Schottky rectifier diode, which uses the diode's good unidirectional conduction performance to rectify the input power supply voltage and prevent the reverse connection of the power supply from causing damage to components.

[0024] Optionally, in the above-mentioned DMX512 decoding circuit module, the power line is electrically connected to DC 24V, DC 15V or DC12V.

[0025] Further optionally, in the above-mentioned DMX512 decoding circuit module, the resistance values ​​of the first resistor and the second resistor are both 0Ω;

[0026] In the design of the above technical solution, on the one hand, the first resistor and the second resistor can be used as jumpers with a resistance value of 0Ω, so that the two differential signal lines corresponding to each lamp can be electrically connected through the jumper with a resistance value of 0Ω, thereby minimizing the problem of inconsistent signal stability caused by different resistance values ​​of the differential signal lines of each lamp. On the other hand, the jumper with a resistance value of 0Ω can avoid structural interference problems on the circuit board.

[0027] Optionally, in the above-mentioned DMX512 decoding circuit module, the electrical input part is a five-core cable male connector, and the electrical output part is a five-core cable female connector, or the electrical input part is a five-core cable female connector, and the electrical output part is a five-core cable male connector;

[0028] The design of the above technical solution, through the design of the five-core cable male and female heads of the electrical input part and the electrical output part, any electrical input part or the electrical output part can be a five-core cable male head or a five-core cable female head. However, it is necessary to ensure that a five-core cable male head and a five-core cable female head are provided on the same lamp. In this way, it is easier to connect the ends of several lighting fixtures in sequence to achieve the series lighting effect of several lighting fixtures, and the disassembly and connection between the lamps are more convenient, flexible and quick.

[0029] Compared with the prior art, this application has at least the following technical effects:

[0030] On one hand, the present application, through the design of the electrical input part and the electrical output part of the DMX512 decoding circuit module, it is only necessary to connect the electrical input parts and the electrical output parts of several lighting fixtures in sequence, so as to realize the serial lighting function between the lighting fixtures;

[0031] On the other hand, the present application adopts the design of the external plug connector on the decoding circuit, so that the decoding circuit can be electrically plugged into the female plug connector on the lamp board of the lamp. This connection method avoids jumper welding during the production process, reduces the probability of false welding, is easy to implement and manufacture, has high production efficiency, and has a guaranteed yield rate. The external plug connector is electrically plugged into the female plug connector on the lamp board, replacing the internal wiring of the lamp, which does not affect the light beam of the lamp, and greatly improves the overall aesthetics of the lighting fixture.

[0032] In addition, in the present application, when the external plug connector and the female plug connector are plugged into each other, the DMX512 decoding circuit module is connected as a whole to the outside of the lamp, which is not only convenient and efficient to disassemble and install, but also conducive to the subsequent maintenance, upgrading and transformation of the product, and the sustainability of the product is extended.

[0033] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a schematic diagram of the electrical architecture of an embodiment of the present application;

[0035] Figure 2 is a circuit diagram of a preferred embodiment of the present application;

[0036] The parts in the accompanying drawings are marked as follows:

[0037] Electrical input part 1, electrical output part 2, decoding circuit 3, decoding module 31, external plug-in connector 32, power line 33, ground line 34, first differential signal line 35, second differential signal line 36, address input signal line 37, address output signal line 38 and LED lamp bead 4. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] Example

[0040] like Figure 1 and Figure 2 As shown, in one of the embodiments of the present application, a DMX512 decoding circuit module based on serial lighting power supply is provided, including an electrical input part 1, an electrical output part 2 and a decoding circuit 3 electrically connected to the electrical input part 1 and the electrical output part 2, the decoding circuit 3 includes a decoding module 31 and an external plug connector 32 electrically connected to the decoding module 31, the external plug connector 32 is electrically plugged with a female plug connector on a lamp board of a lamp, when the external plug connector 32 and the female plug connector are plugged with each other, the DMX512 decoding circuit module is connected to the outside of the lamp, the decoding module 31 is electrically connected to an LED lamp bead 4 on the lamp board of the lamp through the external plug connector 32 and the female plug connector, and the decoding module 31 can drive the LED lamp bead 4 to turn on and off;

[0041] In one aspect of this embodiment, through the design of the electrical input and output parts of the DMX512 decoding circuit module, it is only necessary to connect the electrical input and output parts of several lighting fixtures in sequence, so as to realize the series lighting of several lighting fixtures and realize their basic series lighting function;

[0042] On the other hand, the design of the external plug connector on the decoding circuit enables the decoding circuit to be electrically plugged with the female plug connector (not shown in the figure) on the lamp board of the lamp. This connection method avoids jumper welding during the production process, reduces the probability of cold welding, is easy to implement and manufacture, has high production efficiency, and has a guaranteed yield rate. The external plug connector is electrically plugged with the female plug connector on the lamp board, replacing the internal wiring of the lamp, which does not affect the light beam irradiation of the lamp, and greatly improves the overall aesthetics of the lighting fixture;

[0043] In addition, when the external connector and the female connector (not shown in the figure) are plugged into each other, the DMX512 decoding circuit module is connected as a whole to the outside of the lamp, which not only facilitates efficient disassembly and installation, but also facilitates subsequent product maintenance and upgrading, thereby extending the sustainability of the product.

[0044] like Figure 2 As shown, in the above embodiment, optionally, the electrical input part 1 and the electrical output part 2 share a power supply line 33 and a ground line 34; the electrical input part 1 and the electrical output part 2 are electrically connected via a first differential signal line 35 and a second differential signal line 36, the first differential signal line 35 and the second differential signal line 36 are respectively connected in series with a first resistor J1 and a second resistor J2, the electrical input part 1 has an address input signal line 37, the address input signal line 37 is electrically connected to the PI address input terminal of the decoding module 31, and the electrical output part 2 has an address output signal line 38, the address output signal line 38 is electrically connected to the PO address output terminal of the decoding module 31;

[0045] In this embodiment, the first differential signal line and the second differential signal line are electrically connected between the electrical input part and the electrical output part respectively, so that several lamps share two differential signal lines. The first resistor J1 and the second resistor J2 are respectively connected in series on the two differential signal lines, which can suppress stray signals on the signal lines and ensure that the signals can be recognized by the decoding modules of each lamp.

[0046] like Figure 2As shown, the above embodiment is further preferably connected in series with a third resistor RI1 between the address input signal line 37 and the PI address input terminal of the decoding module 31, a fourth resistor RO1 is connected in series between the address output signal line 38 and the PO address output terminal of the decoding module 31, a fifth resistor RA is connected in series between the first differential signal line 35 and the AI ​​differential signal input terminal of the decoding module 31, and a sixth resistor RB is connected in series between the second differential signal line 36 and the BI differential signal input terminal of the decoding module 31;

[0047] In this embodiment, through the series connection design of the third resistor RI1 and the fourth resistor RO1, the leakage current can be limited and the ground voltage can be reduced. The fifth resistor RA and the sixth resistor RB serve as the decoding differential signal input resistors of the decoding module, which can suppress the stray signals on the signal line, thereby improving the signal accuracy and removing the common error interference, thereby ensuring that the signal can be recognized by the decoding module.

[0048] like Figure 2 As shown, the above embodiment is further preferably, the GND grounding terminal of the decoding module 31 is grounded, the VDD power supply terminal of the decoding module 31 is electrically connected to the first capacitor C3, the seventh resistor R1 and the eighth resistor R2, the first capacitor C3 is grounded, the seventh resistor R1 and the eighth resistor R2 are electrically connected in parallel, the eighth resistor R2 is electrically connected to the 1 pin of the external plug-in connector 32, and the 1 pin of the external plug-in connector 32 is also electrically connected to the second capacitor C1, the third capacitor C2 and the ninth capacitor C3 electrically connected to the second capacitor C1 and the third capacitor C2. The ninth resistor RF1 is further connected in series with a diode D1, the positive electrode of the diode D1 is electrically connected to a power line 33, the 2nd pin of the external plug connector 32 is electrically connected to a tenth resistor RD, the tenth resistor RD is electrically connected to the DO decoding forwarding signal end of the decoding module 31, and the 3rd pin of the external plug connector 32 is grounded 34; in this embodiment, the decoding module 31 preferably adopts a patch driver chip produced by Shenzhen Lianxinke Microelectronics Co., Ltd., and its model is UCS512KH;

[0049] In this embodiment, the first capacitor C3 is a filter capacitor, the seventh resistor R1 and the eighth resistor R2 are power supply pull-up resistors at the VDD power supply end of the decoding module, the seventh resistor R1, the eighth resistor R2 and the first capacitor C3 are combined to provide a stable working voltage for the decoding module, the second capacitor C1 and the third capacitor C2 are filter capacitors, which mainly filter out high-frequency signals in the power line and provide stable voltage and current to the load, the ninth resistor RF1 is a low-resistance insurance resistor, whose function is to prevent the decoding module and the load from short-circuiting. If the decoding module is short-circuited or the load is short-circuited, the ninth resistor RF1 will be blown due to excessive current, and no open flame will occur, thereby protecting the normal operation of the power line. The main function of the diode D1 is to use the unidirectional conduction performance of the diode to rectify the input power supply voltage and prevent the power supply from being reversed and causing damage to components. The tenth resistor RD is the pin anti-interference resistor of the DO decoding forwarding signal end of the decoding module, providing high-quality decoding forwarding signals for the back-end load.

[0050] like Figure 2 As shown, the above embodiment is further preferred, the resistance values ​​of the third resistor RI1 and the fourth resistor RO1 are 510Ω, and the resistance values ​​of the fifth resistor RA and the sixth resistor RB are both 5.1kΩ;

[0051] In this embodiment, the third resistor RI1 and the fourth resistor RO1 adopt engineering experience resistance values, which can limit the leakage current and reduce the ground voltage. The fifth resistor RA and the sixth resistor RB also adopt engineering experience resistance values, which can suppress stray signals on the signal line, improve signal accuracy, and remove common error interference, thereby ensuring that the signal can be recognized by the decoding module.

[0052] like Figure 2 As shown, the above embodiment is further preferably that the diode D1 adopts a Schottky rectifier diode, the capacitance of the second capacitor C1 and the third capacitor C2 are both 4.7μF, the resistance of the seventh resistor R1 and the eighth resistor R2 are both 3.9kΩ (when the power line 33 is electrically connected to DC 24V), 2.61kΩ (when the power line 33 is electrically connected to DC 15V) or 2kΩ (when the power line 33 is electrically connected to DC 12V), the capacitance of the first capacitor C3 is 0.1μF, the resistance of the ninth resistor RF1 is 0.02Ω, and the resistance of the tenth resistor RD is 510Ω;

[0053] In this embodiment, the power supply voltage DC 24V is used to power the module through the diode D1. The diode D1 adopts a Schottky rectifier diode. The diode has good unidirectional conduction performance to rectify the input power supply voltage and prevent the reverse connection of the power supply from causing damage to components.

[0054] like Figure 2As shown, in the above embodiment, optionally, the power line 33 is electrically connected to DC 24V, DC 15V or DC 12V;

[0055] In this embodiment, a DC 24V, 15V or 12V working voltage is used. While providing the working voltage of the DMX512 decoding circuit module, the working voltage is within the human safety voltage range. This provides a safety guarantee for outdoor building lighting fixtures, which will not cause safety hazards to people even if there is leakage in rainy days.

[0056] It should be noted here that when a working voltage of DC 24V, 15V or 12V is used, except that the resistance values ​​of the seventh resistor R1 and the eighth resistor R2 in this embodiment change, the parameters of the other electronic components remain unchanged, specifically: the resistance values ​​of the seventh resistor R1 and the eighth resistor R2 are both 3.9kΩ (when the power line 33 is electrically connected to DC 24V), 2.61kΩ (when the power line 33 is electrically connected to DC 15V) or 2kΩ (when the power line 33 is electrically connected to DC 12V);

[0057] The above products of different models can be manufactured into products of different voltage levels according to the lighting intensity requirements, and only minor adjustments are required to the electronic components of the products, providing consumers with a variety of product choices and facilitating mass production and sales.

[0058] like Figure 2 As shown, in the above embodiment, further preferably, the resistance values ​​of the first resistor J1 and the second resistor J2 are both 0Ω;

[0059] In the present embodiment, on the one hand, the first resistor J1 and the second resistor J2 can be used as jumpers with a resistance value of 0Ω, so that the two differential signal lines corresponding to each lamp can be electrically connected through the jumper with a resistance value of 0Ω, thereby minimizing the problem of inconsistent signal stability caused by resistance differences between the differential signal lines of each lamp due to short circuit. On the other hand, the structure interference problem on the circuit board can be avoided by the jumper with a resistance value of 0Ω.

[0060] like Figure 1 and Figure 2 As shown, in the above embodiment, optionally, the electrical input part 1 is a five-core cable male connector, and the electrical output part 2 is a five-core cable female connector, or the electrical input part 1 is a five-core cable female connector, and the electrical output part 2 is a five-core cable male connector;

[0061] In the present embodiment, by designing the five-core cable male and female heads of the electrical input part and the electrical output part, any electrical input part or the electrical output part can be a five-core cable male head or a five-core cable female head. However, it is necessary to ensure that a five-core cable male head and a five-core cable female head are provided on the same lamp. This makes it easier to connect the ends of several lighting fixtures in sequence to achieve the lighting effect of series connection of several lighting fixtures, and the disassembly and connection between the lamps are more convenient, flexible and quick.

[0062] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure made using the contents of the specification and drawings of the present invention, or directly or indirectly used in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. A DMX512 decoding circuit module based on serial lighting power supply, characterized in that: The invention comprises an electric input part (1), an electric output part (2) and a decoding circuit (3) electrically connected to the electric input part (1) and the electric output part (2); the decoding circuit (3) comprises a decoding module (31) and an external plug connector (32) electrically connected to the decoding module (31); the external plug connector (32) is electrically plugged into a female plug connector on a lamp board of a lamp; when the external plug connector (32) and the female plug connector are plugged into each other, the DMX512 decoding circuit module is connected to the outside of the lamp; the decoding module (31) is electrically connected to an LED lamp bead (4) on the lamp board of the lamp via the external plug connector (32) and the female plug connector; and the decoding module (31) is capable of driving the LED lamp bead (4) to turn on and off.

2. According to claim 1, a DMX512 decoding circuit module based on serial lighting power supply is characterized in that: The electrical input part (1) and the electrical output part (2) share a power supply line (33) and a ground line (34); the electrical input part (1) and the electrical output part (2) are electrically connected via a first differential signal line (35) and a second differential signal line (36); the first differential signal line (35) and the second differential signal line (36) are respectively connected in series with a first resistor and a second resistor; the electrical input part (1) has an address input signal line (37); the address input signal line (37) is electrically connected to a PI address input terminal of the decoding module (31); the electrical output part (2) has an address output signal line (38); the address output signal line (38) is electrically connected to a PO address output terminal of the decoding module (31).

3. A DMX512 decoding circuit module based on serial lighting power supply according to claim 2, characterized in that: A third resistor is connected in series between the address input signal line (37) and the PI address input terminal of the decoding module (31), a fourth resistor is connected in series between the address output signal line (38) and the PO address output terminal of the decoding module (31), a fifth resistor is connected in series between the first differential signal line (35) and the AI ​​differential signal input terminal of the decoding module (31), and a sixth resistor is connected in series between the second differential signal line (36) and the BI differential signal input terminal of the decoding module (31).

4. The DMX512 decoding circuit module based on serial lighting power supply according to claim 3 is characterized in that: The GND grounding terminal of the decoding module (31) is grounded, the VDD power supply terminal of the decoding module (31) is electrically connected to a first capacitor, a seventh resistor and an eighth resistor, the first capacitor is grounded, the seventh resistor is electrically connected in parallel with the eighth resistor, the eighth resistor is electrically connected to pin 1 of the external plug-in connector (32), pin 1 of the external plug-in connector (32) is also electrically connected to a second capacitor, a third capacitor and a ninth resistor electrically connected to the second capacitor and the third capacitor, the second capacitor is connected in parallel with the third capacitor and is grounded, the ninth resistor is also connected in series with a diode, the positive electrode of the diode is electrically connected to a power supply line (33), pin 2 of the external plug-in connector (32) is electrically connected to a tenth resistor, the tenth resistor is electrically connected to a DO decoding forwarding signal terminal of the decoding module (31), and pin 3 of the external plug-in connector (32) is grounded.

5. The DMX512 decoding circuit module based on serial lighting power supply according to claim 3, characterized in that: The resistance values ​​of the third resistor and the fourth resistor are 510Ω, and the resistance values ​​of the fifth resistor and the sixth resistor are both 5.1 kΩ.

6. The DMX512 decoding circuit module based on serial lighting power supply according to claim 4, characterized in that: The diode is a Schottky rectifier diode, the capacitance of the second capacitor and the third capacitor are both 4.7μF, the resistance of the seventh resistor and the eighth resistor are both 3.9kΩ, 2.61 kΩ or 2 kΩ, the capacitance of the first capacitor is 0.1μF, the resistance of the ninth resistor is 0.02Ω, and the resistance of the tenth resistor is 510Ω.

7. The DMX512 decoding circuit module based on serial lighting power supply according to claim 2, characterized in that: The power line (33) is electrically connected to DC 24V, DC 15V or DC 12V.

8. The DMX512 decoding circuit module based on serial lighting power supply according to claim 2, characterized in that: The resistance values ​​of the first resistor and the second resistor are both 0Ω.

9. The DMX512 decoding circuit module based on serial lighting power supply according to claim 1, characterized in that: The electrical input part (1) is a five-core cable male connector, and the electrical output part (2) is a five-core cable female connector, or the electrical input part (1) is a five-core cable female connector, and the electrical output part (2) is a five-core cable male connector.

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