Power line carrier circuit and lighting equipment

Abstract

The invention provides a power line carrier circuit and lighting equipment, and relates to the technical field of circuits, a carrier modulates a carrier signal into alternating current of a first power line to obtain an alternating current carrier control signal, and a rectifier converts the alternating current carrier control signal transmitted by the first power line into direct current to obtain a first direct current signal; wherein the first coupler is used for filtering a direct-current signal and a low-frequency signal in an alternating-current carrier control signal, and reserving a high-frequency signal in the alternating-current carrier control signal to obtain a target carrier signal; modulating the target carrier signal and the first direct-current electric signal in a second power line to obtain a direct-current power supply carrier signal; the second coupler is used for coupling the direct-current power carrier signal to obtain a target carrier signal and transmitting the target carrier signal to the lighting module; wherein the lighting module takes electricity through the direct-current power supply carrier signal and operates according to the target carrier signal. And four-wire system transmission is not needed, so that the use of wires can be effectively reduced.

Description

Technical Field

[0001] The present invention relates to the field of circuit technology, and in particular to a power carrier circuit and a lighting device. Background Art

[0002] With the continuous development of technology, lighting devices have become indispensable in people's lives. In addition to simply controlling the on and off of lighting devices through switches, specific signals can now be used to control the brightness of lighting equipment, or functions such as timing switches.

[0003] In the related art, the power supply and signal transmission functions are realized through a four-wire system, which includes four independent signal lines, namely positive, negative, data and ground. In the four-wire system, the positive electrode provides a positive voltage for power or signal, the negative electrode provides a negative voltage for power or signal, the data line is used to transmit specific audio, video or data signals, and the ground line is used to provide a common reference point to ensure the accuracy and stability of the signal. However, the four-wire system consumes more wires, and due to too many lines, the probability of failure is relatively greater. Therefore, how to better realize the control of lighting devices has become an urgent problem to be solved in the industry. Summary of the invention

[0004] The present invention provides a power carrier circuit and lighting equipment, which are used to solve the defects in the prior art that the four-wire system consumes more wires and has a relatively higher probability of failure due to too many lines.

[0005] The present invention provides a power carrier circuit, comprising:

[0006] A carrier, wherein the output end of the carrier is connected to the first power line, and the carrier is used to modulate a carrier signal into the alternating current of the first power line to obtain an alternating current carrier control signal;

[0007] a rectifier, wherein an input end of the rectifier is connected to the first power line, and the rectifier is used to convert the AC carrier control signal transmitted by the first power line into DC power to obtain a first DC signal;

[0008] a first coupler, wherein a first port of the first coupler is connected to the first power line, and the first coupler is used to filter out a DC signal and a low-frequency signal in the AC carrier control signal, retain a high-frequency signal in the AC carrier control signal, and obtain a target carrier signal, wherein the target carrier signal and the first DC signal are modulated in the second power line to obtain a DC power carrier signal;

[0009] N decoding lighting units, each of which includes a second coupler and a lighting module that are communicatively connected, N is a positive integer, the output end of the rectifier and the second port of the first coupler are connected to the second coupler and the lighting module in each of the decoding lighting units through the second power line, wherein the second coupler is used to couple the target carrier signal from the DC power carrier signal and transmit the target carrier signal to the lighting module, the lighting module draws power based on the DC power carrier signal and operates according to the target carrier signal.

[0010] According to a power carrier circuit provided by the present invention, the circuit also includes: a power amplifier, which is respectively connected to the second port of the first coupler and the second power line, and the power amplifier is used to power amplify the target carrier signal and then transmit the power-amplified target carrier signal to the second power line.

[0011] According to a power carrier circuit provided by the present invention, the first power line includes: a neutral line and a live line, the second power line includes: a positive line and a negative line, and the first coupler includes:

[0012] a first capacitor, a second capacitor and a first transformer, wherein the first capacitor is connected to the live wire and the first port of the first transformer respectively, and the second capacitor is connected to the neutral wire and the second port of the first transformer respectively; the first capacitor and the second capacitor are used to filter out the DC signal in the AC carrier control signal to obtain a first carrier signal, and the first transformer is used to filter out the low-frequency signal in the first carrier signal to obtain a second carrier signal;

[0013] A third capacitor is respectively connected to the third port of the first transformer and the positive line, and the fourth port of the first transformer is connected to the negative line. The third capacitor is used to filter out the DC signal in the second carrier signal to obtain the target carrier signal, and transmit the target carrier signal to the second power line.

[0014] According to a power carrier circuit provided by the present invention, the second coupler includes: a fourth capacitor and a second transformer, the fourth capacitor is respectively connected to the positive line and the first port of the second transformer, the second port of the second transformer is connected to the negative line, the third port and the fourth port of the second transformer are connected to the lighting module, the fourth capacitor is used to filter out the low-frequency signal in the DC power supply carrier signal, and the second transformer is used to couple the target carrier signal from the DC power supply carrier signal and transmit the target carrier signal to the lighting module.

[0015] According to a power carrier circuit provided by the present invention, the circuit also includes: a decoder, a first port of the decoder is connected to the third port and the fourth port of the second transformer, a second port of the decoder is communicatively connected to the lighting module, and the decoder is used to decode the target carrier signal into a pulse width modulation signal and transmit the pulse width modulation signal to the lighting module.

[0016] According to a power carrier circuit provided by the present invention, the circuit further includes: a microcontroller, the microcontroller is communicatively connected with the decoder and the lighting module respectively, and the microcontroller is used to control the operation of the lighting module through the pulse width modulation signal.

[0017] According to a power carrier circuit provided by the present invention, the circuit also includes: a filter; the filter is respectively connected to the output end of the rectifier and the second power line; the filter is used to filter out high-frequency differential mode signals in the first direct current signal.

[0018] According to a power carrier circuit provided by the present invention, the lighting module includes: a dimming module and a light-emitting unit; the dimming module is connected to the second power line and the second coupler respectively, and the dimming module is used to control the brightness of the light-emitting unit according to the target carrier signal.

[0019] According to a power carrier circuit provided by the present invention, the light-emitting unit includes at least one of the following: a light-emitting diode, a laser diode, an organic light-emitting diode or other light-emitting units.

[0020] The present invention also provides a lighting device, comprising any one of the above-mentioned power carrier circuits.

[0021] The power carrier circuit and lighting device provided by the present invention obtain an AC carrier control signal by modulating a carrier signal into AC power. The AC carrier control signal only needs to use a first power line including only two wires for signal transmission. Subsequently, the DC signal and the low-frequency signal in the AC carrier control signal can be filtered out by a first coupler, and the high-frequency signal in the AC carrier control signal is retained to obtain a target carrier signal. After the rectifier converts the AC carrier control signal into DC power, the first DC signal is modulated in the second power line at the second power line with only two wires to obtain a DC power carrier signal. The DC power carrier signal can realize power supply for the lighting module, and the second coupler can also couple the target carrier signal from the DC power carrier signal to realize the operation of the lighting module according to the target carrier signal. The power carrier circuit in the present invention can realize power supply and signal transmission through two wires, which can effectively reduce the utilization rate of the wires and reduce the risk of failure caused by too many wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are 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.

[0023] Figure 1 One of the schematic diagrams of the power carrier circuit structure provided by an embodiment of the present invention;

[0024] Figure 2 The second schematic diagram of the power carrier circuit structure provided by the embodiment of the present invention;

[0025] Figure 3 The third schematic diagram of the power carrier circuit structure provided by the embodiment of the present invention;

[0026] Figure 4 A fourth schematic diagram of the structure of a power carrier circuit provided in an embodiment of the present invention;

[0027] Figure 5 A schematic diagram of the structure of a lighting device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Figure 1 One of the schematic diagrams of the power carrier circuit structure provided by the embodiment of the present invention is as follows: Figure 1 As shown, it includes: a carrier 11, a first coupler 12, a rectifier 13, and N decoding lighting units 18, and the decoding lighting unit 18 includes a second coupler 14 and a lighting module 15;

[0030] The output end of the carrier 11 is connected to the first power line 16, and the carrier 11 modulates the carrier signal into the alternating current of the first power line 16 to obtain an alternating current carrier control signal;

[0031] The first port of the first coupler 12 and the input end of the rectifier 13 are both connected to the first power line 16;

[0032] The rectifier 13 converts the AC carrier control signal transmitted by the first power line 16 into DC power to obtain a first DC power signal;

[0033] The first coupler 12 is used to filter out the DC signal and the low-frequency signal in the AC carrier control signal, retain the high-frequency signal in the AC carrier control signal, and obtain the target carrier signal;

[0034] The second port of the first coupler 12 and the output end of the rectifier 13 are connected to the second coupler 14 and the lighting module 15 in each decoding lighting unit 18 through a second power line 17, and the second coupler 14 is in communication connection with the lighting module 15;

[0035] Wherein, the target carrier signal and the first DC power signal are modulated in the second power line 17 to obtain a DC power carrier signal;

[0036] The second coupler 14 is used to couple the target carrier signal from the DC power supply carrier signal, and transmit the target carrier signal to the lighting module 15;

[0037] The lighting module 15 is powered by the DC power carrier signal and operates according to the target carrier signal.

[0038] In the embodiment of the present invention, the first power line may be specifically connected to an AC power source, and the AC power source provides AC power to the first power line. For example, the AC power source provides 220V AC power or 110V AC power to the first power line.

[0039] The carrier device in the embodiment of the present invention can modulate the carrier signal used to control the lighting device into the alternating current of the first power line. At this time, the obtained alternating current carrier control signal is still transmitted in the first power line, but the alternating current carrier control signal has the characteristics of alternating current and can carry the information of the carrier signal.

[0040] In an embodiment of the present invention, the AC carrier control signal is transmitted to the first coupler and the rectifier respectively, and the rectifier is used to convert the AC signal into a DC signal. Its main function is to convert the variable voltage of the AC power supply into a stable DC voltage to supply electronic equipment and circuits. Therefore, the rectifier in the present invention converts the AC carrier control signal into DC power to obtain a first DC signal.

[0041] The first coupler in the embodiment of the present invention specifically filters out the DC part of the AC carrier control signal, retains the AC signal component, and can further filter out the low-frequency component in the signal, couple the high-frequency signal and pass it on to obtain the target carrier signal, and then transmit the target carrier signal to the second power line.

[0042] In an embodiment of the present invention, after the rectifier transmits the first DC power signal to the second power line and the first coupler transmits the target carrier signal to the second power line, the target carrier signal and the first DC power signal are loaded together to obtain a DC power carrier signal, which can be used for power supply and also carries the target carrier signal for controlling the lighting module.

[0043] In an embodiment of the present invention, the second power line can directly transmit the DC power carrier signal to the lighting module, thereby providing power to the lighting module. On the other hand, the second coupler can effectively couple the DC power carrier signal to obtain a target carrier signal for controlling the operation of the lighting module, and transmit the target carrier signal to the lighting module, thereby realizing operation control of the lighting module.

[0044] In an embodiment of the present invention, an AC carrier control signal is obtained by modulating a carrier signal into AC power. The AC carrier control signal only needs to use a first power line including only two wires for signal transmission. Subsequently, a DC signal and a low-frequency signal in the AC carrier control signal can be filtered out by a first coupler, and a high-frequency signal in the AC carrier control signal can be retained to obtain a target carrier signal. After the rectifier converts the AC carrier control signal into DC power, the first DC signal is modulated in the second power line at a second power line with only two wires to obtain a DC power carrier signal. The DC power carrier signal can power the lighting module while the second coupler can also couple the target carrier signal from the DC power carrier signal, thereby controlling the operation of the lighting module according to the target carrier signal. The power carrier circuit in the present invention can realize power supply and signal transmission through two wires, which can effectively reduce the utilization rate of the wires and reduce the risk of failure caused by too many wires.

[0045] Optionally, Figure 2 The second schematic diagram of the power carrier circuit structure provided by the embodiment of the present invention includes: the first power line 16 includes: a neutral line 161 and a live line 162, the second power line 17 includes: a positive line 171 and a negative line 172, the first coupler 12 includes: a first capacitor 121, a second capacitor 122, a first transformer 123 and a third capacitor 124;

[0046] The first capacitor 121 is connected to the live line 162 and the first port of the first transformer 123 respectively, and the second capacitor 122 is connected to the neutral line 161 and the second port of the first transformer 123 respectively;

[0047] The first capacitor 121 and the second capacitor 122 are used to filter out the DC signal in the AC carrier control signal to obtain a first carrier signal, and the first transformer 123 is used to filter out the low-frequency signal in the first carrier signal to obtain a second carrier signal;

[0048] The third capacitor 124 is connected to the third port of the first transformer 123 and the positive line 171 respectively, and the fourth port of the first transformer 123 is connected to the negative line 172;

[0049] The third capacitor 124 is used to filter out the DC signal in the second carrier signal to obtain a target carrier signal, and transmit the target carrier signal to the second power line 17 .

[0050] Specifically, in an embodiment of the present invention, a first capacitor and a second capacitor are respectively arranged on the neutral line and the live line of the first power line, so that the DC signal in the AC carrier control signal is filtered out by the first capacitor and the second capacitor to obtain a first carrier signal, and then the first carrier signal will be transmitted to the first transformer. The first transformer specifically filters out the low-frequency component in the first carrier signal, and then couples the high-frequency signal and passes it on. In addition, the first transformer can also achieve safe isolation of the signal to obtain a second carrier signal.

[0051] In an optional embodiment, the first transformer may be an isolation transformer.

[0052] In this embodiment of the present invention, after obtaining the second carrier signal, the first transformer can transmit it to the third capacitor. At this time, the third capacitor can further filter out the DC signal in the second carrier signal, finally obtain the target carrier signal, and transmit the target carrier signal to the second power line.

[0053] In an embodiment of the present invention, the first coupler can effectively filter out the DC signal and low-frequency signal in the AC carrier control signal and retain the high-frequency signal to finally obtain the target carrier signal. At the same time, the first transformer in the first coupler can also effectively isolate the signal, effectively ensuring stable signal transmission.

[0054] Optionally, the circuit further comprises: a power amplifier, the power amplifier being connected to the second port of the first coupler and the second power line respectively;

[0055] The power amplifier is used to amplify the power of the target carrier signal, and then transmit the power-amplified target carrier signal to the second power line.

[0056] In an embodiment of the present invention, since other devices may be connected to many first power lines, the target carrier signal coupled to the first coupler has been attenuated to a certain extent, which is not conducive to subsequent signal transmission. Therefore, a power amplifier connected to the first coupler can be further set in an embodiment of the present invention.

[0057] In the embodiment of the present invention, after the first coupler outputs the target carrier signal, it is first amplified by the power amplifier and then input into the second power line.

[0058] In the embodiment of the present invention, the problem of attenuation of the target carrier signal is effectively avoided by using a power amplifier, thereby ensuring effective transmission of the signal.

[0059] Optionally, the circuit further comprises: a filter; the filter is connected to the output end of the rectifier and the second power line respectively;

[0060] The filter is used to filter out high-frequency differential mode signals in the first direct current signal.

[0061] In an embodiment of the present invention, after the rectifier converts the AC carrier control signal into DC power to obtain a first DC power signal, in order to improve the quality of the DC power signal, the high-frequency differential mode signal in the first DC power signal can be further filtered out by a filter, thereby effectively avoiding the high-frequency signal in the DC power from interfering with the control signal component in the target carrier signal, so that the DC power supply carrier signal meets the requirements of no crosstalk and low attenuation in the subsequent decoding process.

[0062] In the embodiment of the present invention, the high-frequency differential mode signal in the first direct current signal can be effectively filtered out by the filter, thereby effectively ensuring that the high-frequency signal in the direct current signal does not interfere with the target carrier signal.

[0063] Optionally, Figure 3 The third schematic diagram of the power carrier circuit structure provided by the embodiment of the present invention is as follows: Figure 3 As shown, the second coupler 14 includes: a fourth capacitor 141 and a second transformer 142;

[0064] The fourth capacitor 141 is connected to the positive line 171 and the first port of the second transformer 142 respectively, the second port of the second transformer 142 is connected to the negative line 172, and the third port and the fourth port of the second transformer 142 are connected to the lighting module 15;

[0065] Among them, the fourth capacitor 141 is used to filter out the low-frequency signal in the DC power supply carrier signal, and the second transformer 142 is used to couple the target carrier signal from the DC power supply carrier signal and transmit the target carrier signal to the lighting module 15.

[0066] In an embodiment of the present invention, the fourth capacitor can be used to filter out low-frequency components in the target carrier signal, retain high-frequency components in the target carrier signal, and transmit the filtered target carrier signal to the second transformer for processing.

[0067] On the other hand, the fourth capacitor can also effectively avoid a short circuit caused by directly connecting the first port and the second port of the first transformer to the positive line and the negative line.

[0068] In an embodiment of the present invention, the second transformer can couple the target carrier signal from the DC power supply carrier signal, and then transmit the target carrier signal to the lighting module, so that the lighting module can be powered by the second power line while also obtaining the target carrier signal for controlling the lighting.

[0069] Optionally, the circuit further comprises: a decoder, wherein a first port of the decoder is connected to a third port and a fourth port of the second transformer, and a second port of the decoder is communicatively connected to the lighting module;

[0070] The decoder is used for decoding the target carrier signal into a pulse width modulation signal, and transmitting the pulse width modulation signal to the lighting module.

[0071] In the embodiment of the present invention, the decoder may specifically refer to decoding the target carrier signal transmitted by the second transformer into a pulse width modulation signal, and the control of the lighting module may be more conveniently achieved through the pulse width modulation signal.

[0072] Optionally, the circuit further comprises: a microcontroller, the microcontroller being communicatively connected with the decoder and the lighting module respectively;

[0073] Wherein, the microcontroller is used to control the operation of the lighting module through the pulse width modulation signal.

[0074] In an embodiment of the present invention, there is receiving communication and sending communication between the microcontroller and the decoder. The decoder can send the decoded pulse width modulation signal to the microprocessor. The microprocessor can control the operation of the lighting module through the pulse modulation signal according to the execution command, such as controlling the brightness modulation of the lighting module, etc.

[0075] In an optional embodiment, the control functions executed by the microcontroller are all existing control functions, which is not limited in this embodiment of the present invention.

[0076] In the embodiment of the present invention, the target carrier signal can be effectively converted into a pulse width modulation signal that is easy to process through the decoder and the controller, and the lighting control of the lighting module can be effectively implemented according to the pulse width modulation signal through the microcontroller.

[0077] Optionally, the lighting module includes: a dimming module and a light-emitting unit; the dimming module is connected to the second power line and the second coupler respectively;

[0078] The dimming module is used to control the brightness of the light-emitting unit according to the target carrier signal.

[0079] In the embodiment of the present invention, the dimming module may be specifically a module for controlling the brightness of the light-emitting unit according to the target carrier signal, which may specifically control the light-emitting unit to become brighter or darker, or control the light-emitting unit to be turned on or off at a scheduled time.

[0080] In an optional embodiment, the dimming module further transmits the DC power carrier signal transmitted by the second power line to the light-emitting unit, thereby supplying power to the light-emitting unit.

[0081] In an optional embodiment, the light emitting unit may specifically be a light emitting diode, a laser diode, an organic light emitting diode or the like.

[0082] In an alternative embodiment, Figure 4 The fourth schematic diagram of the power carrier circuit structure provided by the embodiment of the present invention is as follows: Figure 4 As shown, the coupling path of the control signal may be specifically coupled to the bus through bus sampling, and then each branch performs coupling sampling of the control information.

[0083] In some optional embodiments, Figure 5 A schematic diagram of the lighting device structure provided by an embodiment of the present invention, such as Figure 5 As shown, the lighting device includes the power carrier circuit described in the above embodiment. The specific content of the power carrier circuit can be referred to the above embodiment and will not be described again here.

[0084] Optionally, in an optional embodiment, the first power line and the second power line in the power carrier circuit can be specifically installed in a magnetic track to realize a magnetically powered power line. The specific content of the electronic carrier circuit can refer to the above embodiment and will not be repeated here.

[0085] Furthermore, in the lighting device provided by the present invention, since it is provided with the power carrier circuit as described above, it also has the various advantages as described above.

[0086] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0087] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power carrier circuit, characterized in that: include: A carrier, wherein the output end of the carrier is connected to the first power line, and the carrier is used to modulate a carrier signal into the alternating current of the first power line to obtain an alternating current carrier control signal; a rectifier, wherein an input end of the rectifier is connected to the first power line, and the rectifier is used to convert the AC carrier control signal transmitted by the first power line into DC power to obtain a first DC signal; a first coupler, wherein a first port of the first coupler is connected to the first power line, and the first coupler is used to filter out a DC signal and a low-frequency signal in the AC carrier control signal, retain a high-frequency signal in the AC carrier control signal, and obtain a target carrier signal, wherein the target carrier signal and the first DC signal are modulated in the second power line to obtain a DC power carrier signal; N decoding lighting units, each of which includes a second coupler and a lighting module that are communicatively connected, N is a positive integer, the output end of the rectifier and the second port of the first coupler are connected to the second coupler and the lighting module in each of the decoding lighting units through the second power line, wherein the second coupler is used to couple the target carrier signal from the DC power carrier signal and transmit the target carrier signal to the lighting module, the lighting module draws power based on the DC power carrier signal and operates according to the target carrier signal.

2. The power carrier circuit according to claim 1, characterized in that: The circuit also includes: a power amplifier, which is connected to the second port of the first coupler and the second power line respectively, and is used to amplify the power of the target carrier signal and then transmit the power-amplified target carrier signal to the second power line.

3. The power carrier circuit according to claim 1 or 2, characterized in that: The first power line includes: a neutral line and a live line, the second power line includes: a positive line and a negative line, and the first coupler includes: a first capacitor, a second capacitor and a first transformer, wherein the first capacitor is connected to the live wire and the first port of the first transformer respectively, and the second capacitor is connected to the neutral wire and the second port of the first transformer respectively; the first capacitor and the second capacitor are used to filter out the DC signal in the AC carrier control signal to obtain a first carrier signal, and the first transformer is used to filter out the low-frequency signal in the first carrier signal to obtain a second carrier signal; A third capacitor is respectively connected to the third port of the first transformer and the positive line, and the fourth port of the first transformer is connected to the negative line. The third capacitor is used to filter out the DC signal in the second carrier signal to obtain the target carrier signal, and transmit the target carrier signal to the second power line.

4. The power carrier circuit according to claim 3, characterized in that: The second coupler includes: a fourth capacitor and a second transformer, the fourth capacitor is connected to the positive line and the first port of the second transformer respectively, the second port of the second transformer is connected to the negative line, the third port and the fourth port of the second transformer are connected to the lighting module, the fourth capacitor is used to filter out the low-frequency signal in the DC power supply carrier signal, and the second transformer is used to couple the target carrier signal from the DC power supply carrier signal and transmit the target carrier signal to the lighting module.

5. The power carrier circuit according to claim 4, characterized in that: The circuit also includes: a decoder, a first port of the decoder is connected to the third port and the fourth port of the second transformer, a second port of the decoder is communicatively connected to the lighting module, and the decoder is used to decode the target carrier signal into a pulse width modulation signal and transmit the pulse width modulation signal to the lighting module.

6. The power carrier circuit according to claim 5, characterized in that: The circuit further comprises: a microcontroller, wherein the microcontroller is respectively connected to the decoder and the lighting module for communication, and the microcontroller is used for controlling the operation of the lighting module through the pulse width modulation signal.

7. The power carrier circuit according to claim 1 or 2, characterized in that: The circuit further includes: a filter; the filter is respectively connected to the output end of the rectifier and the second power line; the filter is used to filter out high-frequency differential mode signals in the first direct current signal.

8. The power carrier circuit according to claim 1 or 2, characterized in that: The lighting module includes: a dimming module and a light-emitting unit; the dimming module is connected to the second power line and the second coupler respectively, and the dimming module is used to control the brightness of the light-emitting unit according to the target carrier signal.

9. The power carrier circuit according to claim 8, characterized in that: The light emitting unit includes at least one of the following: a light emitting diode, a laser diode, an organic light emitting diode or other light emitting units.

10. A lighting device, characterized in that: The invention comprises the power carrier circuit as claimed in any one of claims 1 to 9.

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