Drive device, drive method and system therefor

Abstract

The application provides a driving device, a driving method and a driving system. The driving device comprises a driving module, at least one driving unit for electrically connecting the luminaire to drive the luminaire to emit light, an access protection unit electrically connected to the transmission unit to access multiple signals loaded in the target wire in the state that the transmission unit accesses the target wire, wherein an impedance adjuster is arranged in the access protection unit, the access protection unit is configured to pass the second signal in a specific frequency interval with high impedance and pass the first signal in a non-specific frequency interval with low impedance to supply power for the driving unit, and a control unit accesses the second signal in isolation before the impedance adjuster in the access protection unit through a transceiving unit to control the driving unit to perform dimming actions indicated by the second signal.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of smart home, and in particular to a driving device and a driving method and system thereof. BACKGROUND

[0002] With the improvement of people's living standards, intelligent lighting is becoming more and more important. In the prior art, intelligent lighting is usually achieved by using wireless communication technologies such as Wi-Fi, Zigbee, Bluetooth, etc.

[0003] However, the above wireless communication has defects that cannot be overcome, such as Wi-Fi technology, limited communication distance, poor stability and easy to be interfered; poor Bluetooth networking capability, few network nodes, not suitable for multi-point control; Zigbee is a low-speed short-range wireless network protocol, with low data transmission rate, small effective range and poor anti-interference performance. And wireless technology is restricted by scene and house type, and the attenuation of wall and metal panel on wireless transmission is more serious, often leading to no signal in some areas. Especially in a large area of use scene, the disadvantages of the above wireless communication mode are more obvious.

[0004] Therefore, a wired communication technology that couples control signals into power line signals has been gradually applied to the field of smart home. This technology transmits analog or digital signals at high speed through carrier mode, and the biggest feature is that it does not need to re-lay network, and as long as there is a power line, data transmission can be performed. SUMMARY

[0005] In order to overcome the problems in the prior art, the present application provides a driving device and a driving method and system thereof.

[0006] An object of the present application is to provide a driving device and a driving method and system thereof, wherein an access protection unit is arranged in the driving device, and in the high-impedance isolation process of the impedance regulator of the access protection unit, the first signal can be transmitted almost without loss to ensure the normal power supply of the rear-end circuit, and the second signal can be protected from being attenuated by the filtering element of the rear-end, thereby protecting the integrity and authenticity of the second signal to the greatest extent, and the control unit can obtain a relatively clean second signal from the power line through the access protection unit, thereby improving the interference problem of the power line carrier signal in the power line transmission.

[0007] The application aims to provide a driving device and its driving method and system, wherein the access protection unit is provided with an impedance regulator and a first capacitor, so that the access protection unit has a bidirectional isolation protection function for the second signal, which can prevent the second signal from being attenuated after passing through the impedance regulator and prevent the high-frequency interference signal from the rear end from interfering with the second signal after passing through the impedance regulator, thereby bidirectionally ensuring the signal strength and purity of the second signal.

[0008] The application aims to provide a driving device and its driving method and system, wherein the transceiving unit is provided with a filter protection circuit, which can filter the wave crest in the second signal and fill the wave trough below zero, so that the second signal is more stable and clean.

[0009] The application aims to provide a driving device and its driving method and system, wherein the control unit is powered by a multi-stage power supply formed by first reducing the voltage of the high-voltage first signal and then boosting it, which can reduce the ripple of the power supply of the control unit, enhance the stability of the power supply, and prevent the control unit from being damaged.

[0010] The application aims to provide a driving device and its driving method and system, wherein a multi-stage and separable transceiving unit is provided, which can be separated and arranged according to the arrangement state of the voltage reduction and stabilization circuit and the dimming driving circuit in the driving device, thereby enhancing the flexibility of use. When applied to track lamps, the first transceiving sub-unit can be arranged in the power supply, and the second transceiving sub-unit can be arranged in each lamp end on the track, thereby realizing distributed control of the track lamps.

[0011] The application aims to provide a driving device and its driving method and system, wherein the first signal and the second signal can be cut off in power communication, and the third signal is formed by special setting of the cut-off of the first signal and the second signal, which can trigger the control unit to enter some specific modes (such as a network configuration mode), so that the driving module can enter the specific mode without physical triggering, thereby facilitating the operation of the driving module and enriching its functions.

[0012] The application aims to provide a driving device and its driving method and system, wherein the control unit has a first dimming mode and a second dimming mode, so that the driving device can be controlled by a wired control based on power carrier communication by a fixedly arranged dimmer and controlled by a wireless terminal based on a wireless signal by a mobile phone, thereby making the operation of the driving device more convenient and flexible and the mode switching more simple.

[0013] To achieve any one of the above objects, according to another aspect of the present application, there is provided a driving device adapted to be electrically connected to a luminaire for driving and dimming the luminaire, the driving device comprising:

[0014] a bottom shell; a first shell which is covered on the bottom shell to form a containing space; a circuit carrier which is at least partially accommodated in the containing space and carries a delivery unit for accessing and / or discharging a target wire; and a driving module which is carried on the circuit carrier in the containing space; wherein the driving module comprises: at least one driving unit for electrically connecting the luminaire to drive the luminaire to emit light; an access protection unit which is electrically connected to the delivery unit to be able to access a plurality of signals loaded in the target wire in a state that the delivery unit accesses the target wire, wherein an impedance adjuster is arranged in the access protection unit to form a sudden increase of impedance of the access protection unit when a signal in a specific frequency interval passes through the access protection unit, and the access protection unit is configured to be able to pass a second signal in the specific frequency interval with high impedance and to pass a first signal in a non-specific frequency interval with low impedance to supply power to the driving unit; wherein the frequency of the first signal is less than the frequency of the second signal; a control unit which accesses the second signal before the impedance adjuster in the access protection unit through a transceiving unit to control the driving unit to perform a dimming action indicated by the second signal.

[0015] According to a second aspect of the present application, there is provided a driving method comprising the steps of:

[0016] accessing a plurality of signals in a target wire through an access protection unit in a state that a delivery unit accesses the target wire;

[0017] arranging an impedance adjuster in the access protection unit to form a sudden increase of impedance of the access protection unit when a signal in a specific frequency interval passes through the access protection unit, and to pass a second signal in the specific frequency interval with high impedance and to pass a first signal in a non-specific frequency interval with low impedance to supply power to a driving unit;

[0018] accessing the second signal before the impedance adjuster in the access protection unit through a transceiving unit; and,

[0019] controlling the driving unit to perform a dimming action indicated by the second signal.

[0020] According to a third aspect of the present application, there is provided a driving device adapted to be electrically connected to a luminaire for driving and dimming the luminaire, the driving device comprising:

[0021] a delivery unit for accessing and / or discharging a target wire;

[0022] a driving unit electrically connected to the conveying unit to access a first signal loaded in the target wire to form a power supply in a state that the conveying unit accesses the target wire;

[0023] a control unit electrically connected to the conveying unit and the driving unit to access a second signal loaded in the target wire in a state that the conveying unit accesses the target wire and the driving unit is powered by the power supply in an isolated and at least two-stage relay manner, so that the luminaire can perform a dimming action indicated by the second signal.

[0024] According to a fourth aspect of the present application, a dimming system is provided, comprising the driving device according to the first aspect, the driving device according to the third aspect, or,

[0025] comprising the driving device capable of implementing the driving method according to the second aspect;

[0026] a luminaire electrically connected to the driving device to be controlled by the driving device in terms of varying brightness and / or color temperature;

[0027] at least one wired dimming device and / or at least one wireless dimming device for establishing a communication connection relationship with the driving device to generate dimming data in response to external dimming control, and then generate a second signal capable of being used to control the driving device.

[0028] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced hereinafter. The drawings incorporated into the specification and form a part of the specification, show the embodiments consistent with the present application, and together with the specification serve to explain the principles of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0030] Figure 1 is a structural schematic diagram of the driving device in an embodiment of the present application;

[0031] Figure 2 is a disassembly schematic diagram of the driving device in an embodiment of the present application;

[0032] Figure 3 is a circuit structural schematic diagram of the driving device in an embodiment of the present application; Figure 1 ;

[0033] Figure 4 is a circuit structure schematic of a driving device in an embodiment of the present application Figure 2 ;

[0034] Figure 5 is a circuit structure schematic of a driving device in an embodiment of the present application Figure 3 ;

[0035] Figure 6 is a circuit structure schematic of a driving device in an embodiment of the present application Figure 4 ;

[0036] Figure 7 is a circuit structure schematic of a driving device in an embodiment of the present application Figure 5 ;

[0037] Figure 8a is a circuit structure schematic of a driving device in an embodiment of the present application Figure 6 ;

[0038] Figure 8b is a circuit structure schematic of a filter protection circuit in an embodiment of the present application

[0039] Figure 9 is a circuit structure schematic of a driving device in an embodiment of the present application Figure 7 ;

[0040] Figure 10 is a circuit structure schematic of a driving device in an embodiment of the present application

[0041] Figure 11 is a circuit structure schematic of a driving device in an embodiment of the present application Figure 9 ;

[0042] Figure 12 is a circuit structure schematic of a driving device in an embodiment of the present application Figure 10 ;

[0043] Figure 13 is a circuit structure schematic of a driving device in an embodiment of the present application Figure 10 ;

[0044] Figure 14 is a circuit structure schematic of a driving device in an embodiment of the present application Figure 10 ;

[0045] Figure 15 is a specific implementation circuit diagram of a delivery unit, an access protection unit and a voltage reduction and stabilization circuit in an embodiment of the present application

[0046] Figure 16 is a specific implementation circuit diagram of a transceiving unit and a control unit in an embodiment of the present application

[0047] Figure 17 is a specific implementation circuit diagram of the boost circuit in an embodiment of the present application;

[0048] Figure 18a is a specific implementation circuit diagram of the dimming driving circuit in an embodiment of the present application;

[0049] Figure 18b is a specific connection circuit diagram of the driving chip of the dimming driving circuit in an embodiment of the present application;

[0050] Figure 19 is a specific implementation circuit diagram of the delivery unit, the access protection unit and the step-down voltage stabilizing circuit in another embodiment of the present application;

[0051] Figure 20 is a specific implementation circuit diagram of the first transceiving subunit in another embodiment of the present application;

[0052] Figure 21 is a specific implementation circuit diagram of the second transceiving subunit and the control unit in another embodiment of the present application;

[0053] Figure 22 is a specific implementation circuit diagram of the dimming driving circuit in another embodiment of the present application;

[0054] Figure 23 is a flowchart of a driving method in an embodiment of the present application. DETAILED DESCRIPTION

[0055] The embodiments of the present application will be described in detail below with reference to the drawings. When the following description refers to arrangements in the drawings, identical numbers on different drawings represent the same or similar elements unless otherwise indicated. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0056] It should be understood that, in the description of all embodiments of the present application, the terms "upper", "lower", "left", "right", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. The terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can be explicitly or implicitly included one or more of the features. The terms "coupling", "connection" and the like should be broadly understood, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection or can communicate with each other; it can be directly connected, or indirectly connected to form a linkage relationship through an intermediate medium, or the internal communication or interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0057] With the improvement of lighting demand, the current lighting system is also more and more complex, and the existing intelligent lighting mainly relies on magnetic attraction lamp, hanging line lamp, lamp strip and the like to realize whole house lighting, and contains many types and quantities of lamps. In the existing intelligent dimming method, the brightness and / or color temperature of various lamps are controlled through WIFI, BLE MESH, ZIGBEE and other wireless methods, but the instability and delay of wireless communication make it impossible to achieve stable and unified dimming control when the number of lamp types is large, therefore, the wired communication method based on power carrier technology is gradually applied to intelligent lamp control, however, due to the complexity of various signals in the power grid, the signals coupled to the power line are easily disturbed, and the control signals coupled in the power line are also easily transmitted to the external power grid, causing signal pollution to the power grid. Based on this, the present application provides a driving device and a driving method and system thereof, the driving device loads the control signal in the power line through an access protection unit, and receives the control signal through a transceiver unit, which can stably take out the control signal and reduce the attenuation of the control signal, effectively improving the problem of unstable control signal in the wired communication based on power carrier technology used in intelligent lamp control.

[0058] These and other implementations will be discussed with reference to the following figures. However, those skilled in the art will readily appreciate that the detailed description given herein with respect to these figures is for explanatory purposes only and should not be construed as limiting.

[0059] Figure 1A driving device is shown, which is adapted to be electrically connected to a luminaire 600 to drive and dim the luminaire 600. The luminaire 600 can be understood as any lamp that can be driven to be dimmed (e.g. brightness and / or color temperature adjusted), such as a magnetic lamp, a ceiling lamp, a lamp strip, etc. The driving device can be integrated with the luminaire 600 or separately arranged.

[0060] As shown in Figure 1 , it can be seen that the driving device proposed by the present application at least includes a bottom shell 100; a first shell 200 which is covered on the bottom shell 100 to form a containing space 201; a circuit carrier 300 which is at least partially accommodated in the containing space 201 and carries a delivery unit 501 for accessing and / or leading out target wires; wherein the first shell 200 can be covered on the bottom shell 100 by snap-fit or threaded connection, which is not limited in the embodiment; and as shown in Figure 1 , specifically, the circuit carrier 300 carries a delivery unit 501 for accessing and / or leading out target wires at a position not accommodated in the containing space 201; wherein the circuit carrier 300 can be a PCB circuit board or any component capable of carrying circuit components; the target wires are used to carry first and second signals, which can be armored cables with certain shielding capability to reduce the interference of spatial coupling on the transmission of the second signal in the target wires; the second shell 400 is movably connected to the first shell 200 and / or the bottom shell 100, and is used to cover the delivery unit 501, as shown in Figure 2 , the second shell 400 can be at least partially separated from the first shell 200 to expose the delivery unit 501, so as to facilitate the accessing and / or leading out of the target wires; wherein the second shell 400 can be movably connected to the first shell 200 by snap-fit, or can be inserted into the first shell 200 by a rail as shown in Figure 2 , which is not specifically limited in the embodiment. The delivery unit 501 can be understood as any wiring component suitable for the driving device, such as a threaded terminal or a spring terminal, which can be used to connect power lines, so as to enable the driving device to access the electrical signals transmitted by external power grids and the carrier signals loaded on the power lines. The driving module is carried on the circuit carrier 300 in the containing space 201; as shown in Figure 3 , the driving module 500 includes:

[0061] At least one driving unit 502 is used to electrically connect the illuminator 600 to drive the illuminator 600 to emit light; in the embodiment, the illuminator 600 is a LED lamp that can be driven to emit light, specifically, it can be a dimmable and / or color-tunable LED lamp, and then the driving unit 502 can drive it to dim and / or color-tune by outputting different voltages or currents; an access protection unit 503 is electrically connected to the transmission unit 501 to be able to access the multiple signals loaded in the target wire in the state that the transmission unit 501 accesses the target wire, wherein an impedance adjuster 5031 is arranged in the access protection unit 503 to form a signal of a specific frequency interval that has a sudden increase in impedance when passing through the access protection unit 503, and then the access protection unit 503 is configured to be able to pass the second signal of the specific frequency interval with high impedance and pass the first signal of the non-specific frequency interval with low impedance to supply power to the driving unit 502; wherein the frequency of the first signal is less than the frequency of the second signal; in other words, the impedance adjuster 5031 in the access protection unit 503 forms a high-impedance isolation protection effect on the second signal of the specific frequency interval, so that when the second signal passes through the access protection unit 503, most of the second signal is hindered and cannot pass due to the existence of the impedance adjuster 5031, and the first signal different from the second signal can pass smoothly with low impedance and be used to supply power to the driving device. The sudden increase in impedance can be understood as follows: when the first signal used for power supply enters the access protection unit 503 from the external power grid, the impedance adjuster 5031 presents low impedance to it and does not block it, and the first signal for power supply can pass almost without loss and supply power to the driving device based on the target wire; when the second signal carrying control information enters the access protection unit 503, the impedance adjuster 5031 presents high impedance to the second signal instantaneously, generates a strong blocking effect, and makes the signal strength of the second signal passing through the impedance adjuster 5031 decay by more than 60%. Specifically, in the embodiment, the specific frequency interval is set to 1MHz-12MHz, and the first signal is a power frequency alternating current signal of 50Hz or 60Hz. In an example, the specific frequency interval is set to 2.4MHz-5.6MHz, 1.95MHz-12MHz, 0.78MHz-2.93MHz, or 1.76MHz-2.93MHz. Those skilled in the art can set the corresponding specific frequency interval based on actual use requirements, which is not limited here; the driving module 500 further comprises a control unit 504 which accesses the second signal before the impedance adjuster 5031 in the access protection unit 503 through a transceiver unit 505 to control the driving unit 502 to perform the dimming action indicated by the second signal.The dimming action can be understood as an action of adjusting color temperature, an action of adjusting brightness, an action of adjusting state (on / off state), etc. The second signal should be understood as a kind of signal for communication, which can be a message of a specific format generated based on a certain protocol (for example, IEEE1901.1), and different purposes based on the content of the relevant fields in the message form second signals with different communication functions.

[0062] Based on the above technical solution, in the driving device, the access protection unit 503 is provided, in the high-impedance isolation process of the impedance regulator 5031 of the access protection unit 503, the first signal can be transmitted almost without loss to ensure the normal power supply of the rear-end circuit, and the second signal can be protected from being attenuated by the filtering element of the rear end, thereby protecting the integrity and authenticity of the second signal to the greatest extent, and the control unit 504 can obtain a relatively clean second signal from the power line through the access protection unit 503, thereby improving the instability problem of the power carrier signal in the power line.

[0063] In addition, the inventor finds that the driving device needs to transform the power frequency alternating current to supply power to the lamp, so the filter circuit and the switching power supply circuit are used to make the supply voltage applicable and stable, the filter circuit attenuates the power carrier signal, and the high-frequency interference signal generated by the switching power supply circuit also interferes with the power carrier signal, resulting in abnormal connection of the power carrier signal. Therefore, the embodiment provides a corresponding solution as shown in Figure 4 As shown in the figure, the access protection unit 503 is connected with a first capacitor 5032 between the zero line and the live line on the side of the impedance regulator 5031 facing the driving unit 502, so that in the state that the driving unit 502 is powered by the first signal through the impedance regulator 5031, the high-frequency interference signal generated by the driving unit 502 connected to the access protection unit 503 is hindered, thereby forming protection in the second direction of the second signal. The second direction is the direction from the inside of the driving device to the external power grid, and the hindering can be understood as a state that the high-frequency interference signal cannot pass, such as short circuit, attenuation, isolation, etc. The high-frequency interference signal can be common-mode interference, differential-mode interference, or both. In the embodiment, the access protection unit 503 is provided with the impedance regulator 503 and the first capacitor 5032, so that the access protection unit 503 has a bidirectional isolation protection function for the second signal, which can prevent the second signal from being attenuated after passing through the impedance regulator 5031, and can also prevent the high-frequency interference signal of the rear end from interfering with the second signal after passing through the impedance regulator 5031, thereby protecting the second signal in a bidirectional isolation manner, ensuring the signal strength and purity of the second signal, and improving the stability of communication.

[0064] Further, referring to Figure 5 , the access protection unit 503 further has a second capacitor 5033 connected in series between the zero line and the live line on the side of the impedance adjuster 5031 facing the driving unit 502; the capacitance of the second capacitor 5033 is different from that of the first capacitor 5032, and the capacitance parameters of the first capacitor 5032 and the second capacitor 5033 are configured to enable mutual cooperation between the capacitors so that the self-resonant frequency is in the specific frequency range. Further, the cooperation of the first capacitor 5032 and the second capacitor 5033 enables the access protection unit 503 composed of the impedance adjuster 5031, the first capacitor 5032 and the second capacitor 5033 to have better signal protection capability in the specific frequency range, which can prevent the second signal from being attenuated by the capacitive device at the back end, and can prevent the high-frequency interference signal generated by the circuit at the back end from polluting the second signal, thereby forming bidirectional isolation protection for the second signal. In an example, the first capacitor 5032 is configured as 110nF, and the second capacitor is configured as 220nF, so that the access protection unit 503 composed of the impedance adjuster 5031, the first capacitor 5032 and the second capacitor 5033 has the maximum attenuation degree of the signal in the frequency range of 2.4MHz-5.6MHz, so that the access protection unit 503 has better signal protection capability for the signal in the frequency range.

[0065] Specifically, the access protection unit 503 has a first inductor connected in series between the zero line or the live line between the transmission unit 501 and the driving unit 502 to form the impedance adjuster 5031, so that in the state that the first inductor accesses the first signal through the transmission unit 501, based on the frequency selection characteristic of the first inductor, the impedance of the second signal in the specific frequency range suddenly increases through the access protection unit 503, to form the first direction protection of the second signal. The first direction is the direction from the external power grid to the inside of the driving device, and the second direction is opposite to the first direction. The first inductor can increase the inductive reactance at the moment of accessing the signal in the specific frequency range, so that most of the second signal cannot pass through the first inductor and is isolated in front of the first inductor, to prevent the second signal from being attenuated or interfered to affect the stability of the signal.

[0066] Specifically, as Figure 6As shown, the access protection unit 503 is provided with a first inductor and a second inductor on the zero line and the live line on the side of the delivery unit of the first capacitor 5032 to form the impedance adjuster 5031; in this way, in the state that the first inductor and the second inductor access the second signal through the target wire, based on the frequency selection characteristics of the first inductor and the second inductor, the impedance of the second signal in a specific frequency interval passing through the access protection unit 503 is suddenly increased to form the first direction protection of the second signal; wherein the inductance of the first inductor and the second inductor is the same. In this embodiment, the second signal is transmitted in the form of a differential mode signal on the zero line and the live line, so that the inductor is arranged on the zero line and the live line at the same time, which can better protect the second signal.

[0067] Specifically, the inductance of the first inductor and / or the second inductor is set to 33uH-1mH. In one example, the first inductor and the second inductor are both set to 1mH. In another example, the first inductor and the second inductor are both set to 330uH, so that the self-resonant frequency of the access protection unit 503 is within the specific frequency interval, so that the access protection unit 503 has a higher insertion loss in the specific frequency interval, achieving better protection effect of the second signal.

[0068] Referring to Figure 7 In one embodiment, the access protection unit 503 is further provided with at least one common mode choke 5034 between the delivery unit 501 and the impedance adjuster 5031, to filter the common mode interference generated in the circuit in the state that the delivery unit 501 accesses the target wire and the driving module 500 is powered by the first signal, to reduce the mutual influence between the driving device and the external power grid during operation.

[0069] In addition, since the first signal is a strong signal (generally 220v or 380v), its voltage level is higher than that of the control unit 504 (generally 3.3V or 5V), and if the control unit 504 directly receives the second signal loaded in the first signal, it is likely to cause the control chip to be damaged by high voltage, therefore, as shown in FIG. 8, an embodiment of a transceiver unit with isolation function is given. Referring to Figure 8aThe transceiving unit 505 comprises a first transformer 5052 and a third capacitor 5051. The control unit 504 accesses the second signal before the impedance adjuster 5031 of the access protection unit 503 through the first transformer 5052 and the third capacitor 5051. The first transformer 5052 is connected in series with the third capacitor 5051 between one end of the impedance adjuster 5031 of the access protection unit 503 facing the transmission unit 501, and the secondary side of the first transformer 5052 is directly or indirectly connected to the control unit 504. In this way, the third capacitor 5051 and the primary side of the first transformer 5052 are electrically connected to form a transceiving unit 505 with selectivity in the specific frequency range, so that the control unit 504 can access the second signal in isolation on the secondary side of the first transformer 5052, preventing the high-voltage first signal from directly contacting the control unit 504 and causing the control unit 504 to be at risk of being burned out. Similarly, when the control unit 504 needs to send the second signal carrying information to the outside, it injects the second signal to be sent into the primary side of the first transformer 5052 through the secondary side of the first transformer 5052 in isolation, and then couples the second signal to the target conductor for transmission based on the coupling circuit formed by the electrical connection between the primary side of the first transformer 5052 and the third capacitor 5051.

[0070] Further, the drive module 500 further comprises a filter protection circuit 506 arranged at both ends of the secondary side of the first transformer 5052. The filter protection circuit 506 comprises a first diode D1, a second diode D2, a third diode D3, and a fourth diode D4. The anode of the first diode D1 and the cathode of the second diode D2 are electrically connected and then connected to one end of the secondary side of the first transformer 5052. The cathode of the first diode D1 is electrically connected to a specified voltage, and the anode of the second diode D2 is grounded. The anode of the third diode D3 and the cathode of the fourth diode D4 are electrically connected and then connected to the other end of the secondary side of the first transformer 5052. The cathode of the third diode D3 is electrically connected to the specified voltage, and the anode of the fourth diode D4 is grounded. Figure 8b As shown, a specific application circuit of the filter protection circuit 506 is given, wherein D1-D4 are the first diode to the fourth diode, respectively. Figure 8bAs shown, the anode of diode D1 and the cathode of diode D2 are connected to one end of the secondary side of the first transformer 5052, the cathode of diode D1 is connected to a specified voltage (reference power supply 7V), and the anode of diode D2 is grounded. The anode of diode D3 and the cathode of diode D4 are connected to the other end of the secondary side of the first transformer 5052, the cathode of diode D3 is connected to the reference power supply 7V, and the anode of diode D4 is grounded. The filtering protection principle is described as follows: during the positive half cycle of the second signal, when the voltage of the second signal loaded in one end of the secondary side of the first transformer 5052 exceeds 7V, D1 is turned on to filter out the wave crest of the second signal exceeding 7V, and when the second signal loaded in the other end of the secondary side of the first transformer 5052 is lower than 0V, D4 is turned on. Similarly, during the negative half cycle of the second signal, when the second signal loaded in one end of the secondary side of the first transformer 5052 exceeds 7V, D3 is turned on to filter out the wave crest of the second signal exceeding 7V, and when the second signal loaded in the other end of the secondary side of the first transformer 5052 is lower than 0V, D2 is turned on. In this way, the wave crest of the second signal exceeding 7V can be filtered out, and the wave trough lower than zero is filled, so that the second signal is more stable and clean.

[0071] Further, referring to Figure 9 As shown, the driving unit 502 converts the received first signal in the form of alternating current into a direct current signal and reduces the voltage to a first limited voltage range through a voltage reduction and stabilization circuit, so as to supply power to a dimming driving circuit electrically connected to the voltage reduction and stabilization circuit. The dimming driving circuit is electrically connected to the control end of the control unit 504 to perform corresponding dimming operation under the control of the control unit 504. As shown, Figure 10 As shown, the voltage reduction and stabilization circuit comprises a rectifier circuit, a power factor correction circuit, and a switching power supply circuit connected in sequence, so that the input first signal is rectified, power factor corrected, and voltage-reduced and stabilized to the first limited voltage range to supply power to the dimming driving circuit. The voltage reduction and stabilization circuit further reduces the output voltage of the first limited voltage range to a second limited voltage through a voltage reduction circuit and increases the second limited voltage to a third limited voltage through a voltage increase circuit. The second limited voltage and the third limited voltage are used to supply power to the control unit 504 in sequence. The third limited voltage is less than the starting voltage value of the first limited voltage range. In this embodiment, the high-voltage first signal is reduced and then increased to form a multi-stage power supply to supply power to the control unit 504, which can reduce the ripple of the power supply of the control unit 504, enhance the stability of the power supply of the control unit 504, and prevent the control unit 504 from being damaged.

[0072] Compared with the transceiving unit in the above embodiment, as shown, Figure 11Another embodiment of the transceiving unit is shown, wherein the transceiving unit 505 comprises a first transceiving subunit 5053 and a second transceiving subunit 5054 connected detachably, so as to integrate the first transceiving subunit 5053 with the voltage-stabilizing circuit and the second transceiving subunit 5054 with the dimming driving circuit in the state that the voltage-stabilizing circuit and the dimming driving circuit are arranged separately, to form a transceiving unit 505 with multi-stage distributed transceiving function, so that the control unit 504 can access the second signal through the first transceiving subunit 5053 and the second transceiving subunit 5054 in a multi-stage relay and isolated manner. In a specific example of an application scenario, the driving device is applied to the driving of track lamps, one track is connected with one power supply and multiple lamps, the power supply converts a 220-volt power frequency alternating current first signal into a suitable power supply (for example, a 24-volt or 40-volt power supply) and then supplies power to each lamp through the track, and then the first transceiving subunit can be arranged in the power supply, and the second transceiving subunit can be multiple and arranged at each lamp end on the track respectively, the power supply and each lamp form a power supply port (for example, as shown in Figure 11 ) connected through the track, and then the second signal can be transmitted to the control unit 504 at each lamp end in a multi-stage relay and isolated manner through the first transceiving subunit and the second transceiving subunit, to realize distributed intelligent driving control of each lamp on the track. In this embodiment, a multi-stage and detachable transceiving unit is provided, which can be arranged separately according to the arrangement state of the voltage-stabilizing circuit and the dimming driving circuit in the driving device, to enhance the flexibility of use.

[0073] Further, as shown in Figure 12As shown, in a specific embodiment of the first transceiver subunit, the first transceiver subunit 5053 has a fourth capacitor 50532 connected in series between the primary side of a second transformer 50531 and the end of the impedance regulator 5031 of the access protection unit 503 facing the transmission unit 501, and a fifth capacitor 50533 electrically connected between its secondary side and the output terminal of the buck regulator circuit, thus possessing bidirectional transceiver capability; thus, when the second signal enters the first transceiver subunit 5053 from the first direction, it is electrically connected to the primary side of the second transformer 50531 by the fourth capacitor 50532, forming a high-pass characteristic. The signal is selected by the signal selection circuit and injected into the secondary side of the second transformer 50531 in isolation, and then coupled again to the DC signal output by the buck regulator circuit through the fifth capacitor 50533; when the second signal enters the first transceiver subunit 5053 from the second direction, it is selected by the high-pass signal selection circuit formed by the electrical connection of the fifth capacitor 50533 and the secondary side of the second transformer 50531, and injected into the primary side of the second transformer 50531 in isolation, and then coupled again to the target wire connected to the transmission unit 501 through the fourth capacitor 50532. Thus, the first transceiver subunit 5053 can receive signals from the target wire of the power grid (such as...). Figure 12 The second signal is connected to the neutral wire (N) and the live wire (L) and coupled to the output power of the step-down voltage regulator circuit to be transmitted to the control unit 504 at the back end. The second signal sent by the control unit 504 can also be coupled to the target conductor of the power grid, thus having bidirectional transmission and reception capability.

[0074] Furthermore, such as Figure 13 As shown, in a specific embodiment of the second transceiver subunit, the second transceiver subunit forms a signal access port on the primary side of a third transformer 50542 through a sixth capacitor 50541, and is directly or indirectly electrically connected to the control unit 504 on its secondary side. Thus, in the state where the first transceiver subunit 5053 and the second transceiver subunit 5054 are electrically connected and the transmission unit 501 is connected to the target wire, the sixth capacitor 50541 is electrically connected to the primary side of the third transformer 50542, forming a second transceiver subunit 5054 with selectivity for the specific frequency range. This allows the control unit 504 to receive the second signal isolated on the secondary side of the third transformer 50542. In this embodiment, a first-level isolation is formed by the second transformer 50531 of the first transceiver subunit 5053, and a second-level isolation is formed by the third transformer 50542 of the second transceiver subunit 5054. These two isolations prevent the high-voltage first signal from directly contacting the control unit 504, thus preventing the control unit 504 from being burned out.

[0075] In another example, as shown in Figure 14 the second transceiving subunit includes a sixth capacitor 50541, one end of which forms a signal access port, and the other end of which is directly or indirectly electrically connected to the control unit 504, so as to access the second signal accessed through the first transceiving subunit to the control unit 504 in a state that the first transceiving subunit and the second transceiving subunit are electrically connected and the conveying unit 501 accesses the target wire.

[0076] In addition, in order to facilitate the understanding of the above-mentioned embodiments, as shown in Figure 15 a specific implementation circuit of the driving module 500 is given, wherein the conveying unit 501 implemented as a terminal CN4 is connected to one end of a common mode inductor GM1 of an access protection unit 503 through a fuse F1 and a pressure-sensitive resistor RV1, preferably, F1 adopts a 4.7R / 2W fuse, which is used to cut off the circuit when overcurrent occurs due to line failure, so as to protect the circuit components from being damaged, and the pressure-sensitive resistor RV can provide a discharge path when the AC input is disconnected, so as to prevent a large current impact, and also has a good clamping effect on the impact voltage.

[0077] Preferably, GM1 adopts an 800uH common mode inductor, and the other end of GM1 is electrically connected to both ends of an inductor L4 and an inductor L5 serving as an impedance regulator 5031, two capacitors CX1 and CX2 (i.e. the first capacitor 5032 and the second capacitor 5033) are connected in series on the firewire and the zero line of the other end of L4 and L5, and an inductor L3 and its discharge resistor R20 are connected between CX1 and CX2, and the two ends of inductor L4 and inductor L5 are also respectively linked with discharge resistors R11 and R25, wherein CX1 adopts a 100Nf / 310V capacitor, CX2 adopts a 220Nf / 310V capacitor, L4 and L5 both adopt a 1mH inductor, L3 adopts a 4.7mH inductor, and R20, R25 and R11 all adopt a 6.8K resistor; thus, L4, L5, CX1, CX2, GM1, L3, R20, R11 and R25 together constitute the access protection unit 503, wherein inductor L4 and inductor L5 bear the function of isolating the second signal, CX1 and CX2 bear the function of filtering high-frequency interference, and GM1 bears the function of filtering common mode interference.

[0078] The rectifier circuit in the circuit adopts a rectifier bridge BD1, which rectifies the AC high voltage signal after being connected to the protection unit 503 and outputs it to the power factor correction circuit. The rectifier bridge BD1 composed of rectifier diodes seriously pollutes the harmonic current of the power grid. The voltage of the first signal input by the power grid is a sine wave, but the conduction angle of the rectifier device is less than 180°, only a small conduction angle, resulting in serious distortion of the input AC current waveform, which is in the form of pulses. The pulse-shaped input current contains a large amount of harmonic components. Harmonics do not do work, but a large number of harmonic components increase the harmonic noise of the circuit, resulting in a large amount of harmonic current flowing into the power grid, polluting the power grid and causing low power factor. As shown in Figure 15 , the circuit uses a valley fill circuit as a power factor correction circuit to correct the power factor. The capacitor CE4, diode D4, resistor R17, diode D6, diode D7, and capacitor CE2 in the figure together form the valley fill circuit of the circuit.

[0079] The power factor circuit corrects the power factor of the circuit and outputs it to a switching power supply circuit implemented as a kickback power supply, as shown in Figure 15 . The switching power supply circuit realizes DC voltage reduction based on transformer T1. The resistor R18, resistor R19, resistor R15, capacitor C12, and diode D3 form the primary side circuit of transformer T1. Pin 1 of T1 primary is connected to the output end of the valley fill circuit, pin 2 is connected to the positive electrode of D3, resistor R18 and resistor R15 are connected in series, one end of R18 is connected to the output end of the valley fill circuit, one end of R15 is connected to the negative electrode of diode D3, resistor R19 and capacitor C12 are connected in parallel across resistor R18. Resistor R21, capacitor C11, capacitor C15, and diode D5 form the secondary side circuit of transformer T1. Pin 7 of T1 is connected in series with capacitor C11 and resistor R21, serving as the output end (DC 42V) of the switching power supply circuit; pin 6 of T1 is grounded; the positive electrode of diode D5 is connected to pin 7 of T, and the negative electrode is connected to the output end of the voltage reduction circuit; capacitor C15 and CE3 are connected in parallel between the output end and ground. In addition, the primary side also has an inductor coil for supplying power to the control chip and feedback sampling. The control chip uses chip Pn8370P: transformer pin 4 is connected to chip pin 1 through diode D2 and resistor R12 to supply power to the chip, wherein the positive electrode of diode D2 is connected to transformer pin 4; transformer pin 4 is connected to ground through two series resistors R9 and R7, wherein the connection point of R9 and R7 is connected to chip pin 3 as a voltage sampling feedback; resistors RS1 and RS2 are connected in parallel between pin CS and ground for current detection; pins 5 and 6 are shorted, connecting transformer pin 2 and the positive electrode of diode D3, and pin 8 is connected to transformer pin 5 and grounded. Figure 15 The working principle of the switching power supply circuit is as follows:

[0080] At the moment of the circuit power-on, the primary main coil of T1 generates an induced electromotive force with upper negative and lower positive, thus an induced voltage with upper positive and lower negative is generated in the sampling coil, that is, the induced electromotive force generated at the T14 pin is supplied to the chip PN8370P pin 1 through D2 and R12, so as to provide a starting voltage for the chip PN8370P; when the internal switch tube of the chip PN8370P is turned on, the output end of the rectifier bridge, the primary main coil of T1 and the internal switch tube of the chip PN8370P are grounded to form a loop, and the energy is transferred to the secondary through the transformer T1; the secondary coil supplies power to the load through the diode D5, and charges the capacitor CE3 at the same time; the voltage feedback pin 3 and the current feedback pin 4 of the chip PN8370P detect the voltage and current of the primary main coil of the transformer respectively, and jointly control the turn-off of the switch tube when the trigger condition is reached.

[0081] When the internal switch tube of the chip PN8370P is turned off, the primary main coil of T1, the diode D3, the resistor R15 and the parallel-connected resistor R18, R19 and C12 form a loop for discharging the induced current generated by the main coil; and at the moment of the turn-off of the tube, the high voltage applied to the source electrode of the switch tube is also discharged through the path formed by the diode D3, the resistor R15 and the parallel-connected resistor R18, R19 and C12, so as to protect the switch tube and avoid breakdown; at this time, the primary of the transformer T1 no longer transfers energy to the secondary, and the induced current generated by the secondary is discharged through the loop composed of C11, D5 and R21, and the secondary supplies power to the dimming drive circuit through the capacitor CE3 to provide a power supply port, so as to ensure the stability of the power supply voltage of the rear-end circuit.

[0082] As shown in Figure 16 In this circuit, the control unit 504 adopts the power carrier module MHCP01G, as shown in the figure, the No. 1 pin and the No. 2 pin of the control unit 504 are connected to the receiving and transmitting unit 505 as the input pin of the second signal through two current-limiting resistors R5 and R6, and in this circuit, the receiving and transmitting unit 505 is connected to the second signal acquisition port AB in the through the capacitor C1 (i.e. the third capacitor 5051, preferably a capacitor with 100Nf / 275V) and the transformer T11 (i.e. the first transformer 5052, preferably a transformer with 5:4), and the voltage stabilizing diodes TVS2 and TVS1 are arranged at both ends of the primary and secondary sides of the transformer T11 to prevent the power carrier module from being damaged by the peak voltage. Among them, the two voltage stabilizing diodes are both 12v voltage stabilizing diodes. Figure 15

[0083] ​It should be noted that, since the MHCP01G module is a weak current module with three-way hard PWM interface, the module requires a small ripple of the supply voltage, therefore, the voltage signal is first reduced to 3.3V power supply, and then boosted to 7V power supply by 3.3V, and the two power supplies supply power to the power carrier module. The output end of the transceiver unit 505 is connected to the pin 1 and pin 2 of the MHCP01G module, the power supply 3.3V and 7V are respectively connected to the pin 13 and pin 10 of the MHCP01G module, and the pin 3 and pin 4 are the output ends of the PWM, which are respectively connected to the two dimming drive circuits. In this circuit, the step-down circuit uses a step-down chip AS2459, which can provide a maximum current of 1A within a wide input voltage range of 4.5V to 60V, and the peak current mode control can provide cycle-by-cycle current limiting. The step-up circuit uses a step-up chip TC6291C, and the circuit connection relationship is as shown in Figure 17 .

[0084] The specific circuit diagram of the dimming drive circuit corresponding to the present circuit is as shown in Figure 18a , and the present circuit is used to drive an LED lamp illuminator (such as Figure 18a LED1 in). The LED lamp has yellow and white colored beads, and the positive electrode of the LED lamp is connected to the positive electrode of the constant voltage power supply output end. The yellow and white beads are respectively connected to a driving signal, realizing the driving of the yellow and white beads respectively, and thus realizing the dimming and color adjustment of the whole LED lamp. As shown in Figure 18a , the 1 pin of LED1 is connected to the direct current power supply end, the 2 pin is connected to the output end of the dimming drive chip corresponding to CN2, and the 3 pin is connected to the output end of the dimming drive chip corresponding to CN3. CN2 and CN3 are respectively used to connect two dimming drive chips. In the present circuit, the driving of the LED lamp adopts a constant current control mode, and the power carrier module outputs two PWM control signals to the two dimming drive chips corresponding to the two dimming drive circuits based on the received second signal, so as to adjust the driving current of the LED lamp, and realize the adjustment of brightness and color temperature. The dimming drive chip used in the dimming drive circuit in the present circuit is a drive chip with model number HI2801, and the specific circuit connection relationship diagram is as shown in Figure 18b . The chip HI2801 internally includes three modules: current sampling module, PWM logic control module and shutdown control module. The current sampling module samples the current signal as a current feedback, and converts it into a voltage form by using an external resistor, and then obtains an intermediate control signal by using a comparator. The intermediate control signal, the PWM control signal input by the power carrier module of the control unit 504, and the shutdown control signal are logically operated, and jointly control the on-off of the switch tube inside the HI2801 chip.

[0085] The output end of the switching power supply circuit is connected to the pin VDD of the HI2801 through the voltage dividing resistor R10 to supply power to the HI2801 chip. When the switch tube inside the HI2801 chip is turned on, the pin VDD and the CS are connected, and the input end current passes through the LED, the inductor L2, the pin DRV, the CS, the resistor R7 and the ground in turn to form a loop to charge the inductor L2. The current flowing through the inductor gradually increases with the charging time, and when the voltage drop on the current detection resistor R7 reaches the current detection threshold voltage VCS_TH, the control circuit turns off the switch tube inside the HI2801 chip. When the switch tube inside the HI2801 chip is in the off state, the inductor L2 discharges through the loop composed of the LED lamp, the freewheeling diode D1 and the inductor L2 itself. Thus, a stable driving current is output to the load LED. The pin PWM can be externally input with a PWM control signal to adjust the driving current output by the DRV pin. Here, the pin is connected to the PWM output end of the MHCP01G module. The driving current of the HI2801 chip is adjusted based on the PWM control signal, thereby realizing the dimming and color adjustment of the LED lamp.

[0086] In addition, outside the pin CS, the resistor R4 is connected in series with Q1 and then connected in parallel across the resistor R7, and the resistor R5 is connected in series with Q2 and then connected in parallel across the resistor R7. The on-off of Q1 and Q2 is controlled by the dip switch, thereby changing the size of the external resistor of the pin CS. In this way, the output current of the HI2801 chip can be changed in a large range, thereby making the driving compatible with different types / powers of illuminators 600.

[0087] In addition, the inventors find that the integration of the power supply and the dimming driver of the luminaire causes problems such as large size and poor heat dissipation, and in some application scenarios, one power supply needs to power the dimming drivers of multiple luminaires, for example, in the specific application scenario of track luminaires, one track is usually connected with one power supply and multiple lamps, and the power supply converts the 220V power frequency alternating first signal into a suitable power supply (such as 24V or 40V power supply) and then powers each lamp through the track, at this time, a driving device with cascading and switching functions is needed to meet such application scenarios. Further based on such needs and the driving device provided in the foregoing embodiments, the application further provides a driving device adapted to be electrically connected to a luminaire to drive and dim the luminaire, and the driving device comprises: a conveying unit for accessing and / or discharging a target wire; a driving unit electrically connected to the conveying unit to be able to access a first signal loaded in the target wire to form a power supply in a state that the conveying unit accesses the target wire; a control unit electrically connected to the conveying unit and the driving unit to be able to access a second signal loaded in the target wire in an isolated and at least two-stage switching manner in a state that the conveying unit accesses the target wire and a state that the driving unit is powered on by the power supply, so that the luminaire can perform the dimming action indicated by the second signal.

[0088] In the above scheme, the driving unit assumes the role of the power supply, which can access the first signal for power supply through the conveying unit, and then power the control unit, and a transceiving unit with switching function and capable of isolated signal transmission and reception is provided, which can transmit the second signal accessed by the conveying unit to the control unit in an isolated and at least two-stage switching manner, and then in the state that the driving unit and the control unit are separately arranged, the control unit can be accessed by the power supply and the control signal (i.e. the second signal) in a multi-stage switching manner, to realize single power supply-multi dimming distributed lighting control and enhance the flexibility of use.

[0089] In some embodiments, the driving unit converts the received AC first signal into a DC signal and steps it down to a first defined voltage range via a buck regulator circuit to form the power supply, which powers a dimming driving circuit electrically connected to the buck regulator circuit. The dimming driving circuit is electrically connected to the control terminal of the control unit to drive the illuminator to perform a corresponding dimming action under the control of the control unit. The control unit receives the second signal through a two-stage grounding and isolation connection via a transceiver unit. The transceiver unit includes a first transceiver subunit and a second transceiver subunit. In the state where the buck regulator circuit and the dimming driving circuit are separately configured, the first transceiver subunit is integrated with the buck regulator circuit, and the second transceiver subunit is integrated with the dimming driving circuit to form a transceiver unit with multi-stage transceiver function.

[0090] In the above embodiments, the transceiver unit has a first transceiver subunit and a second transceiver subunit, which can be separately configured according to the setting state of the step-down voltage regulator circuit and the dimming drive circuit, so as to realize the power supply and control signal (i.e., the second signal) to the control unit through a multi-level conversion, thereby realizing distributed intelligent lighting control with single power supply and multiple dimming. In a specific application description for track lighting, the first transceiver subunit can be set in the power supply, while there can be multiple second transceiver subunits, which are respectively set at the end of each lamp on the track, and the power supply port formed between the power supply and each lamp (e.g., Figure 11 As shown in the diagram, the signals are connected via a track, and the second signal can form a first-level transfer at the first transceiver subunit and a second-level transfer at the second transceiver subunit. The signals are then transmitted to the control unit 504 of each lamp terminal through the first and second transceiver subunits via multi-level transfer and isolation, thereby realizing distributed intelligent drive control of each lamp on the track.

[0091] In one specific embodiment, such as Figure 12As shown in a specific implementation example of the first transceiving subunit, the first transceiving subunit 5053 is connected in series between the primary side of a second transformer 50531 and one end of the impedance regulator 5031 of the access protection unit 503 facing the transmission unit 501, and is connected in series between the secondary side of the second transformer 50531 and the output end of the voltage stabilizing circuit, and is provided with bidirectional transceiving; in this way, when the second signal enters the first transceiving subunit 5053 from the first direction, the second signal is selected by the signal selection circuit with high-pass characteristics formed by the fourth capacitor 50532 and the primary side of the second transformer 50531, and is isolatedly injected into the secondary side of the second transformer 50531, and then is coupled again into the direct-current signal output by the voltage stabilizing circuit through the fifth capacitor 50533; when the second signal enters the first transceiving subunit 5053 from the second direction, the second signal is selected by the signal selection circuit with high-pass characteristics formed by the fifth capacitor 50533 and the secondary side of the second transformer 50531, and is isolatedly injected into the primary side of the second transformer 50531, and then is coupled again into the target wire accessed by the transmission unit 501 through the fourth capacitor 50532. In this way, the first transceiving subunit 5053 can access the second signal from the target wire (such as the neutral wire N and the live wire L of the power grid) of the power grid and be coupled into the output power supply of the voltage stabilizing circuit to be transmitted to the control unit 504 of the back end, and can also couple the second signal transmitted by the control unit 504 into the target wire of the power grid, and is provided with bidirectional transceiving. Figure 12 In this way, the first transceiving subunit 5053 can access the second signal from the target wire (such as the neutral wire N and the live wire L of the power grid) of the power grid and be coupled into the output power supply of the voltage stabilizing circuit to be transmitted to the control unit 504 of the back end, and can also couple the second signal transmitted by the control unit 504 into the target wire of the power grid, and is provided with bidirectional transceiving.

[0092] In a specific embodiment, as shown in Figure 13 In a specific implementation example of the second transceiving subunit, the second transceiving subunit is connected in series between the primary side of a third transformer 50542 and the signal access port formed by a sixth capacitor 50541, and is connected in series between the secondary side of the third transformer 50542 and the control unit 504; in this way, in the state that the first transceiving subunit 5053 and the second transceiving subunit 5054 are electrically connected and the transmission unit 501 accesses the target wire, the second transceiving subunit 5054 is connected in series between the sixth capacitor 50541 and the primary side of the third transformer 50542, and is provided with selectivity to the specific frequency range, so that the control unit 504 can access the second signal isolatedly on the secondary side of the third transformer 50542. In this embodiment, the second transformer 50531 of the first transceiving subunit 5053 forms a first-level isolation, and the third transformer 50542 of the second transceiving subunit 5054 forms a second-level isolation, and the two times of isolation can prevent the high-voltage first signal from directly contacting the control unit 504 and causing the risk of burning the control unit 504. In this way, the first transceiving subunit 5053 can access the second signal from the target wire (such as the neutral wire N and the live wire L of the power grid) of the power grid and be coupled into the output power supply of the voltage stabilizing circuit to be transmitted to the control unit 504 of the back end, and can also couple the second signal transmitted by the control unit 504 into the target wire of the power grid, and is provided with bidirectional transceiving.

[0093] For ease of understanding, such as Figure 19 As shown, another specific implementation circuit of the drive module 500 is also given, wherein the transmission unit 501, implemented as terminal CN1, is connected to one end of a common-mode inductor LF2 connected to a protection unit 503 via fuse F1, varistor RV1, thermistor RT1, and thermistor RT2. One end of thermistor RT2 is connected to the input point, and the other end is connected to varistor RV1. Varistor RV1 and thermistor RT1 are connected in series, and the other end of RT1 is connected to the output terminal via fuse F1. Fuse F1 is used to cut off the circuit when an overcurrent occurs due to a line fault, protecting the circuit components from damage. Thermistors RT1 and RT2 are used to absorb the start-up surge current, preventing the instantaneous current from being too large and impacting fuse F1, causing damage. The addition of thermistors can effectively improve the safety factor of the power supply design. Varistor RV1 can provide a discharge path when the AC input is disconnected to prevent large current surges, and also has a good clamping effect on surge voltage.

[0094] Preferably, the LF2 adopts a common-mode inductance of 1.5 mH / 2A, the other end of the LF2 is electrically connected to the two ends of the inductor L6 and the inductor L7 as the impedance regulator 5031, two capacitors CX1 and CX2 (i.e. the first capacitor 5032 and the second capacitor 5033) are connected in series on the live wire and the zero line of the other end of the L6 and the L7, and another common-mode inductance LF1 and capacitors CY1 and CY2 are arranged between the two capacitors, and the inductors L6 and L7 are also respectively provided with corresponding bleed resistors R54 and R55; wherein the L6 and the L7 each adopt an inductance of 1 mH, the CX1 and the CX2 each adopt a capacitor of 0.22 Uf / 275 V, the LF1 adopts a common-mode inductance of 30 Mh / 1.5 A, and the R54 and the R55 each adopt a resistor of 4.7K; thus, the LF2, the L6, the L7, the R54, the R55, the CX1, the CX2, the CY1, the CY2, and the LF1 collectively constitute the access protection unit 503, wherein the inductors L6 and L7 bear the function of isolating and protecting the second signal, the CX1 and the CX2 bear the function of filtering high-frequency interference, and the LF1 and the LF2 bear the function of filtering common-mode interference. The circuit principle is that the input signal on the power line is a first signal of 220V / 50Hz and a second signal of high frequency. The access protection unit 503 in the circuit has the ability of bidirectional filtering, on the one hand, the first filter circuit composed of the LF2, the L6, the L7, the CY1, the CY2, and the CX1 can filter out the noise introduced when the power line is input, avoiding the noise introduced by the power grid to interfere with the second signal on the power line; at the same time, it can also block the second signal from entering the subsequent voltage reduction and stabilization circuit, avoiding the second signal from becoming noise for the voltage reduction and stabilization circuit; on the other hand, the second filter circuit composed of the LF1 and the CX2 can prevent the noise generated by the load from entering the power line and interfering with the second signal on the power line, and through the form of two-stage filtering, it can better shield the influence of noise on the overall circuit. The arrangement of the inductors L6 and L7 in the first filter circuit can maximize the protection of the second signal before the second signal is filtered, so as to ensure that the complete and true second signal can be extracted from the power line. Therefore, the two output ends of the inductor LF2 are taken as the extraction points AC_L and AC_N of the second signal.

[0095] The rectifier circuit in this circuit uses a rectifier bridge BD1, which rectifies the AC high voltage signal after being connected to the protection unit 503 and outputs it to the power factor correction circuit. The rectifier bridge BD1 composed of rectifier diodes seriously pollutes the harmonic current of the power grid. The input voltage of the power grid is a sine wave, but the conduction angle of the rectifier device is less than 180°, only a small conduction angle, resulting in serious distortion of the input AC current waveform, which is in the form of pulses. The pulsed input current contains a large amount of harmonic components. Harmonics do not do work, but a large number of harmonic components increase the harmonic noise of the circuit, resulting in a large amount of harmonic current flowing into the power grid, polluting the power grid and causing low power factor. As shown in the figure, this circuit uses an integrated chip OB6683 to realize power factor correction and drive the rear-end switching power supply circuit. Chip OB6683 integrates a transition mode power factor correction controller and a quasi-resonant controller in one chip. The power factor controller provides an economical and efficient solution for optimizing power factor. Compared with traditional PWM series, the quasi-resonant controller provides higher efficiency and lower EM, and the specific connection relationship is as follows Figure 19As shown, the signal (first signal and second signal) loaded on the power line is filtered and enters the rectifier bridge BD1, the positive terminal of the output end of the rectifier bridge BD1 is connected with the inductor L1, the capacitors C2 and C6 are connected at both ends of the inductor L1, one end of which is connected with the inductor L1 and the other end is connected with the negative terminal of the output end of the rectifier bridge BD1 and grounded; one end of the primary side of the transformer T1 is connected with the inductor L1 and the other end is connected with the positive terminal of the diode D6, one end of the secondary side of the transformer T1 is connected with the negative terminal of the rectifier bridge BD1 and the other end is connected with the ZCD pin of the chip OB6683 through the resistor R7; the positive terminal of the diode D4 is connected with the positive terminal of the output end of the rectifier bridge BD1, the negative terminal of the diode D4 is connected with the negative terminal of the diode D6, and both of them are connected with the positive terminal of the coil N1 of the transformer T3, the capacitor C9 is connected between the negative terminal of the diode D6 and the ground; the resistors R16, R18, R64 and R19 are connected in series and then connected between the positive terminal of the coil N1 and the ground; the gate of the switch tube Q1 is connected with the PFCGATE pin of the chip OB6683 through the resistor R10, the source is grounded through the resistor R13, and the drain is connected with the positive terminal of the diode D6; one end of the resistor R12 is connected with the gate of the Q1 and the other end is connected with the source; the diode T4 is connected in series with the resistor R11 and then connected in parallel with the R10, one end of which is connected with the negative terminal of the diode D5 and the other end is connected with the resistor R11; one end of the resistor R15 is connected with the source of the Q1 and the other end is connected with the PFCCS pin of the chip OB6683; the middle point of the resistors R18 and R64 is taken as the feedback input point of the PFCINV pin of the chip OB6683, and the capacitor C13 is connected in parallel between the middle point of the resistors R18 and R64 and the ground; in addition, the resistors R1 and R3 are connected in series and connected between the two ends of the power line, one end of the R1 is connected with the live wire, one end of the R3 is connected with the neutral wire, the two voltage stabilizing tubes D1 and D2 are connected in series and then connected in parallel between the live wire and the neutral wire, the positive terminal of the D1 is connected with the live wire, the negative terminal of the D1 is connected with the negative terminal of the D2, and the positive terminal of the D2 is connected with the neutral wire; the negative terminals of the D1 and D2 are connected with the HV pin of the chip OB6683 through the series-connected resistors R5 and R6. The coil N1 of the transformer completes the power factor correction function, the capacitors C2 and C6 and the inductor L1 constitute a low-pass filter, which mainly functions to smooth and filter the signal output by the rectifier bridge; the primary side of the transformer T1, the diode D6, the switch tube Q1 and the capacitor C9 constitute a boost converter, the chip OB6683 is used as the control chip of the switch tube Q1, when the Q1 is turned on, the T1 and the C9 store energy, when the Q1 is turned off, the T1 releases energy, the secondary side of the T1 is used for current sampling and is converted into voltage through the resistor R7 and fed back to the ZCD pin of the chip OB6683, when the detected voltage is below 1.2V, the internal ZCD comparator is triggered and a new PFC switching cycle is started after the ZCD trigger, thereby realizing the correction of the power factor of the circuit. The diode D4 is arranged to ensure the continuous power supply from the input end to the negative terminal when the switch tube Q1 is turned off.D6, C12, R18, R19, R64 constitute a discharge circuit for absorbing high voltage on the drain of Q1 at the moment of Q1 turn-off; and R64, R19 are voltage dividing resistors connected to the pin PFCINV of OB6683, and the information outputted by the PFC stage is fed to the pin through the voltage divider; the gate resistor R10 of the switch tube Q1 is used to reduce parasitic inductance and eliminate noise; the diode D5 and R11 are used to accelerate the turn-off of Q1 and reduce turn-off loss; R12 is a discharge resistor for discharging static electricity between the gate and source of Q1 to avoid false triggering of the tube; R13 is used for overload and short-circuit protection of the switch tube; R15 is the current feedback of Q1 for affecting the on-off of Q1. In addition, in order to ensure that the chip OB6683 can be started normally, two reverse docking voltage stabilizing tubes D1 and D2 are used to directly output a voltage from the zero live line to start the chip.

[0096] The power factor circuit corrects the power factor of the circuit and outputs to a switching power supply circuit implemented as a flyback power supply, as shown in Figure 19 The switching power supply circuit is composed of the N3 and N2 coils of the transformer T3 to form a flyback converter to achieve step-down; the N1 coil uses the switch tube Q1 to realize the PFC correction function, and the turn-on and turn-off of the switch Q2 realize the energy supply to the flyback conversion coil. The specific circuit connection relationship is as follows:

[0097] N1: the source electrode of the switch Q2 is connected to the negative electrode of the coil N1, the gate electrode is connected to the QRGATE pin of the chip OB6683 through the resistor R24, the diode D7 and the resistor R23 are connected in series and then connected in parallel across the resistor R24, the negative electrode of D7 is connected to the QRGATE pin of the chip OB6683, the resistor R25 is connected between the gate electrode and the ground, and the source electrode is connected to the ground through the resistor R26;

[0098] N2: the resistor R53 is connected in series with the diode D9, the positive electrode of D9 is connected to the positive electrode of the coil N3, the negative electrode of D9 is connected to one end of the capacitors C14 and C15, C14 and C15 are connected in parallel, the resistors R27 and R28 are connected in series, one end of R27 is connected to the positive electrode of the coil N3, the other end of R28 is connected to the other end of the capacitors C14 and C15 and is commonly grounded; the capacitor C16 is connected in parallel across the resistor R28;

[0099] N3: the positive electrode of the diode D12 is connected to the positive electrode of the coil N2, the negative electrode is connected to one end of the inductor L4, the capacitor C26 is connected between the other end of the inductor L and the ground; the capacitors C22 and C24 are connected in parallel and connected between the negative electrode of the diode D12 and the ground; the resistors R32 and R33 are connected in parallel and then connected in series with the capacitor C20, and are commonly connected across D12, the inductors L9 and L8 are respectively connected in series at the positive and negative electrodes of the N2 coil output end; the two input ends of the inductor LF3 are respectively connected to the inductors L8 and L9, and the output end is a constant voltage driven output end;

[0100] The output end of the light coupling U5: L4 is connected to the pin A of the stabilizer CJ432 through the series connection of resistors R43 and R43, and is grounded; the negative pole of the stabilizing tube D15 is connected to the negative pole of the diode D12, the positive pole of the stabilizing tube D15 is connected to the pin K of the stabilizer CJ432 through the series connection of resistors R40 and R41; the negative pole of the light coupling diode is connected to the pin K of the stabilizing tube, and the positive pole is connected to the other end of R41; the resistor R39 is connected in series with the capacitor C30 between the pin K of the stabilizing tube and the pin R, and the C29 is connected between the pin K of the stabilizing tube and the pin R; the collector of the light coupling triode is connected to the pin FB of the chip OB6683 through the resistor R37; and the emitter is grounded.

[0101] The principle of the switching power supply circuit is: the chip OB6683 is used to control the on-off of the switching tube Q2; the specific working principle is: the resistors R5-6 are connected to the pin HV of the OB6683 to provide a starting voltage, the chip is started, the switching tube Q1 and the switching tube Q2 are turned on, the coil N1 is energized to form a loop, at the moment of energization, the induced voltage is generated at the two ends of N1, which is positive at the top and negative at the bottom, so that the induced voltage is generated in N3, which is positive at the top and negative at the bottom, at this time, through R53 and D9, the capacitors C14 and C15 are charged, at the same time, the chip OB6683 is provided with a working power supply through VCC, so that the chip works normally, and the chip adjusts the duty cycle of the switching tube Q2 according to the load feedback; when Q2 is turned on, the induced voltage is generated in the coil N1, which is positive at the top and negative at the bottom, the induced voltage in the coil N3 is positive at the top and negative at the bottom, the capacitors C14 and C15 store energy, the induced voltage in the coil N2 is positive at the top and negative at the bottom, the capacitors C22, C24 and C26 store energy, and the energy of the power grid is stored in the coils N3 and N2 through the transformer; when Q2 is turned off, the power grid does not transmit energy to the load through the coil N1, the capacitors C14 and C15 in the coil N3 continue to supply power to the chip OB6683 through VCC, so as to ensure the normal work of the chip; the capacitors C22, C24 and C26 in the coil N2 and the inductor L4 continue to supply power to the load; C12, R21, R22, R61, R62 and RS1M constitute an absorption loop for absorbing the high voltage applied to the drain of Q2 at the moment of Q2 turning off; R27 and R28 are voltage dividing resistors for feeding back the voltage of the sampling transformer to the chip to detect the demagnetization of the transformer core; the devices D7, R23-26 around the switching tube Q2 have the same effect as the devices around Q1, and will not be described again.

[0102] In the coil N2, C22, C24, C26, L4 are used as energy storage devices, and also constitute a low-pass filter for filtering the ripple in the step-down conversion and smoothing the output; the feedback part of the step-down circuit uses a secondary side feedback, uses CJ431 voltage regulator and LTV1008 optocoupler device to feed back the output voltage to the chip, and the output terminal is connected to the FB pin of the chip OB6683; R42 and R43 are voltage dividing resistors, which ensure the potential of the K pin of CJ431, and R40 is a constant voltage output sampling resistor; the function of the voltage stabilizing tube D15 is to divide the voltage, because the maximum working voltage of CJ431 is 36V, when the voltage at the output end of the DCDC load exceeds 36V, the feedback circuit will not work normally, at this time, the voltage stabilizing function of the voltage stabilizing tube D15 is used to ensure that the entire feedback circuit can work normally. The purpose of setting R41 is to ensure the normal operation of the entire optocoupler part when the sampled feedback voltage / current is very small and the diode in the optocoupler cannot work normally. In addition, since the second signal needs to be coupled to the power supply output by the switching power supply circuit subsequently, two differential mode inductors L8 and L9 and a common mode inductor LF3 are arranged at the constant voltage output end, which are used to filter high-frequency signals and prevent the attenuation of the second signal by the components in the circuit.

[0103] The power line input is a first signal of 220V / 50Hz, and a second signal is superimposed thereon. The first signal input will introduce noise, which mainly refers to the noise generated by other electrical appliances and conducted to the power line, including common mode noise and differential mode noise. In order to pick up a cleaner second signal, the signal on the power line needs to be filtered to avoid interference of the noise in the power grid on the second signal.

[0104] The input is 220V / 50Hz AC power, which has high-frequency noise carried by the power grid when entering the house and high-frequency noise generated during the startup / operation of large electrical appliances in the room, including common mode noise and differential mode noise. Among them, the common mode noise accounts for the majority in the full frequency domain, especially in the high frequency domain, while the differential mode noise accounts for a large proportion in the low frequency domain. The first filter circuit composed of LF2, CY1, CY2, L6, L7 and CX1 is used to filter the noise introduced by the power grid signal, wherein LF2, CY1 and CY2 are used to filter common mode noise, and L6, L7 and CX1 are used to filter differential mode noise. Here, since the differential mode inductor will convert common mode interference into differential mode interference, therefore, the common mode inductor is preferably placed before the inductor L6 and the inductor L7 as impedance adjuster 5031.

[0105] The switching power supply circuit also generates noise in the process of working. Since the signal conduction in the power line is bidirectional, the interference generated by the switching power supply circuit can be conducted to the input end. The second filter circuit composed of CX2 and LF1 is used to filter the interference generated by the load and avoid the noise generated by the switching power supply circuit from interfering with the second signal.

[0106] In addition, since the second signal is a differential mode signal, in order to avoid filtering out the second signal in the filtering process, the high impedance characteristic of the differential mode inductance to the differential mode signal is used to well protect the second signal before the differential mode capacitor filters out the differential mode signal. Thus, the integrity and cleanliness of the sampled second signal are ensured. Specifically, the transceiving unit of the circuit adopts a two-stage separated setting mode, including a first transceiving sub-unit and a second transceiving sub-unit, wherein the connection relationship of the first transceiving sub-unit is as shown in Figure 20As shown: the primary side of transformer T2 (i.e. the second transformer 50531, preferably, the transformer with a coil ratio of 5:4) is connected to the output end of LF2, wherein the live wire output end of LF2 is connected to one input end of the primary side of transformer T2 through the DC signal isolation capacitor C7 (i.e. the fourth capacitor 50532, preferably, the capacitor with 100nF / 275V), i.e. one end of C7 is connected to the live wire and the other end is connected to the input end of transformer T2; TVS1 is directly connected in parallel to the two ends of the primary side of the transformer; the two ends of the secondary side of transformer T2 are directly connected in parallel to TVS2, and then the output ends are connected in series to resistors R58 and R59, respectively, wherein TVS1 and TVS2 are both 12v zener diodes, and R58 and R59 are both 2.4R resistors. Further, through the DC isolation capacitor C11 (i.e. the fifth capacitor 50533, preferably, the capacitor with 100Nf / 100v) and the resistor R60, it is electrically connected to the output end of the switching power supply circuit. At this point, capacitor C7, transformer T2 and capacitor C11 together form the first transceiving subunit. Circuit principle: since the LED lamp needs to be powered by DC, the power line electrical signal will inevitably lose the high-frequency control signal (second signal) after rectification conversion, so it is necessary to extract the second signal from the power line before rectification conversion. The power line electrical signal (including the first signal of 220V / 50Hz alternating current and the second signal of high-frequency control signal) enters the primary side of transformer T2, which uses the isolation function of transformer T2 to isolate the weak current and the strong current, provides a carrier signal path, and allows the signal to be transmitted in a coupled manner. Capacitor C7 and the primary side of coupling coil T2 form a high-pass filter to isolate the input voltage power frequency alternating current signal, TVS1 and TVS2 are bidirectional TVS tubes used to eliminate instantaneous impulse voltage and protect the internal circuit, and R58 and R59 play a role in preventing surge voltage. In the above manner, a relatively complete second signal is collected from the power line. The second signal of the secondary side of transformer T2 is superimposed on the output end VOUT of the switching power supply circuit through the DC isolation capacitor C11. When the second signal is superimposed on the power supply, in order to avoid noise in the circuit interfering with the second signal, capacitor C26 and inductor LF3 are set to filter high-frequency interference signals in the circuit. At the same time, due to the bidirectional conductivity of the second signal, the introduced second signal is prevented from flowing into the circuit, which interferes with the switching power supply circuit, inductors L8 and L9 are set; and the differential mode inductor blocks high frequencies and passes low frequencies, which also protects the second signal.

[0107] The connection relationship of the second transceiving subunit is as follows Figure 21TVS2 and resistor R5 are connected in parallel across the power supply port Vin+, Vin-, and the two input terminals of common mode inductor L7, one output terminal of L7 is connected in series with L1, the other output terminal of L7 is connected in series with L5, the other terminals of L1 and L5 are connected to the two terminals of capacitor C7. The positive terminal of the primary side of transformer T22 (i.e. the third transformer 50542, preferably, a transformer with a winding ratio of 5:4) is connected to the positive output terminal of L7 through series connection of blocking capacitor C22 (i.e. the sixth capacitor 50541, preferably, a capacitor with 100nf / 50v), and the negative terminal of the primary side of transformer T22 is connected to the negative output terminal of L7 through series connection of resistor R18; TVS3 is directly connected in parallel across the two terminals of the primary side of transformer T22, and TVS1 is directly connected in parallel across the two terminals of the secondary side of transformer T22, and a resistor is connected in series with each of the positive and negative output terminals of transformer T22, which are resistor R16 and resistor R17 (in a preferred embodiment, R16 and R17 are both 2.4R resistors). Thus, capacitor C22 and transformer T22 form a second transceiving subunit. The circuit principle is that the constant voltage DC signal with the second signal superimposed on the output terminal VOUT of the switching power supply circuit is input to (VIN+ and VIN-), and the second signal needs to be extracted again by the second transceiving subunit. Similarly, in order to avoid signal interference with the second signal in the line, inductor L7 is provided; in order to avoid interference of the second signal with the subsequent load circuit, and to avoid attenuation of the second signal by other capacitors, inductors L1 and L5 (preferably, L1 and L5 are both 330uH inductors) are provided for isolating the second signal; at the same time, C7 (preferably, a capacitor with 1Uf / 50V) is provided to avoid transmission of noise generated by the subsequent load to the power line to interfere with the second signal, thereby ensuring the authenticity and stability of the extracted second signal. The second signal is extracted by blocking capacitor C22 and transmitted to the secondary side through transformer T22, and the output terminal of transformer T22 is the extracted second signal. TVS3 and TVS1 are used to protect the internal circuit; resistors R16 and R17 are used to eliminate surge voltage. Capacitor C22 and the primary side of transformer T22 form a high-pass filter to isolate the input DC, TVS3 and TVS1 are bidirectional TVS tubes used to eliminate instantaneous surge voltage and protect the internal circuit, and the output of the secondary side of the transformer is the second signal, which is input to the power carrier module MHCP01G as the control unit 504, and the power carrier module generates a PWM wave capable of controlling the brightness / color temperature of the LED to the dimming drive circuit at the back end according to the input second signal.

[0108] Similar to the above embodiment, the control unit 504 in the present circuit still uses the power carrier module MHCP01G, and the working principle is also similar to the above embodiment, which will not be described here.

[0109] In the circuit in the embodiment, the dimming driving circuit adopts constant current control mode, two PWM control signals output by the power carrier module are input into two LED driving chips, and the brightness and color temperature are adjusted by adjusting the driving current of the LED lamp.

[0110] Similarly to the above embodiment, the dimming driving circuit of the circuit specifically adopts the dimming driving chip HI2801, the HI2801 chip mainly includes three modules of a current sampling module, a PWM logic control module and an off control module, wherein the current sampling module samples the output current signal as current feedback, and converts it into a voltage form by using an external resistor, then an intermediate control signal is obtained by using a comparator, the intermediate control signal, a PWM control signal input from outside and an off control signal are logically operated, and the on-off of the switch tube inside the chip is controlled. Adjust the output current, so as to output a stable LED constant current driving signal, and realize dimming / color adjustment of the LED.

[0111] The specific driving circuit is as shown in Figure 22 The HV+ input end inputs a constant voltage power source output by a switching power supply circuit, such as a 24V constant voltage power source, and the input voltage is connected to the pin VDD through the resistor R11 to supply power to the HI2801 chip. When the switch tube inside the chip is turned on, the pins D and CS are connected, and the input current passes through the LED, the inductor L6, the pin D, the pin CS, the resistor R12 and the ground in sequence to form a loop, and the inductor L6 is charged. The current flowing through the inductor gradually increases with the charging time, and when the voltage drop on the current detection resistor R12 reaches the current detection threshold voltage VCS_TH, the control circuit turns off the switch tube inside the chip. When the switch tube inside the chip is in the off state, the inductor L6 discharges through the loop composed of the LED lamp and the freewheeling diode D5. Thus, a stable driving current is output to the load LED lamp. The pin PWM can input a PWM control signal from outside, and the pin is connected to the PWM output end of the power carrier module. The driving current of the chip is adjusted based on the PWM control signal. The LED lamp of the luminaire 600 has yellow and white colored lamp beads, one driving is used to control the white colored lamp beads, and one driving is used to control the yellow colored lamp beads. Two PWM control signals output by the power carrier module are used to adjust the brightness of the two groups of lamp beads, so as to realize dimming and color adjustment.

[0112] Of course, in other application scenarios, the dimming driving circuit can also use constant voltage driving, for example, in some application scenarios of driving a lamp strip, constant voltage driving is often used, and the reason why the lamp strip uses constant voltage driving is that in the application scenario of the lamp strip, the user is often allowed to add or adjust the LED according to actual needs. If constant current driving is used, when one or more LEDs are burned out, damaged or removed from the lamp strip, the remaining LEDs can be damaged because the fixed current can be too high for the remaining LEDs. In comparison, the constant voltage driver is more convenient to operate because as long as the current of the driver is equal to or higher than the total current of the LED in use, the actual current demand of the circuit is ensured to be within the current rating range, so that the user can add or remove the LED in the circuit at will.

[0113] Correspondingly, the driving chip of constant voltage driving can select chip ZJL223B, ZJL223B is a CMOS level conversion chip with OCP overcurrent protection and load short circuit protection function, which can ensure higher safety of the whole machine under abnormal conditions. The chip integrates two independent totem driving circuits inside, which can convert the 3-5V PWM input level into 10-12V output driving voltage to make the external power MOS tube.

[0114] In addition, the inventors found that in actual use, the driving device and the luminaire are generally installed together in a top-mounted ceiling, and once installed, it is not convenient to operate the body of the driving device or the luminaire. Therefore, the traditional way of entering a specific mode (such as entering a commissioning mode by pressing a key for a long time) by operating the body of the driving device or the luminaire will no longer be applicable in this application scenario. In the present embodiment, in order to solve this technical problem, related technical solutions are further proposed, specifically:

[0115] The driving module can access the first signal and the second signal loaded in the target wire in the state of accessing the target wire by the conveying unit 501; wherein the control unit 504 can generate a third signal when the first signal and / or the second signal is cut off according to a specified strategy; the first signal is used to power the driving unit 502, and the second signal and the third signal are used to instruct the control unit 504 to perform different operations (such as the second signal instructing it to dim / color, and the third signal instructing it to reset the commissioning).

[0116] In the present embodiment, by using the characteristics that both the first signal and the second signal in power communication can be cut off, the first signal and the second signal are specially set to form a third signal, which can trigger the control unit 504 to enter some specific modes (such as a reset commissioning mode), so that the driving module can enter a specific mode without manual operation of the body of the driving module, facilitating the operation of the driving module.

[0117] In one example, the control unit 504 is capable of generating a third signal when the first signal and / or the second signal is cut off according to a specified strategy, in particular for:

[0118] determining that the first signal and / or the second signal is cut off for a predetermined number of times within a specified time, generating a third signal in response to the third signal, entering a network configuration mode to send a specified network configuration signal to the outside, so that a networked device receiving the specified network configuration signal responds to the specified network configuration signal to indicate that the control unit 504 is connected to a specified network, so that the drive device establishes a communicable connection relationship with at least one wireless electronic device having a display interface through the specified network in a state where the control unit 504 is connected to the specified network.

[0119] In another example, the control unit 504 is capable of generating a third signal when the first signal and / or the second signal is cut off according to a specified strategy, in particular for: determining that the first signal is received within a specified time after being cut off and reconnected, at this time, the second signal can trigger the drive device to enter a network configuration mode to send a specified network configuration signal to the outside, so that a networked device receiving the specified network configuration signal responds to the specified network configuration signal to indicate that the control unit 504 is connected to a specified network, so that the drive device establishes a communicable connection relationship with at least one wireless electronic device having a display interface through the specified network in a state where the control unit 504 is connected to the specified network. For example, if a second signal representing network configuration is received within 5s after power-off and restart, the reset network configuration mode is entered, and if a second signal representing network configuration is received after 5s after power-off and restart, it is ignored.

[0120] In the network configuration mode, the control unit 504 generates and sends a network configuration message to the outside, so that: after the specified device obtains the network configuration message, the drive device is instructed to join the specified network to complete network configuration; the specified device includes a smart terminal device and / or a gateway device; wherein the drive device after completing network configuration can communicate with the gateway device through the specified network, and further communicate with the electronic device connected to the specified network through the gateway.

[0121] In one embodiment, the control unit 504 has a first dimming mode capable of being controlled by a second signal from a wireless electronic device; and has a second dimming mode capable of being controlled by a second signal from a wired dimming device or the wireless electronic device; wherein the wireless electronic device can be, for example, a wireless dimming knob, a mobile phone, a tablet computer, a smart watch, etc. installed with a specific application capable of generating a dimming instruction, and the wired dimming device can be a dimmer with a screen;

[0122] The control unit 504 is configured to execute a command from an application to activate a second dimming mode in a first dimming mode.

[0123] Further, in this embodiment, the control unit 504 has a first dimming mode and a second dimming mode, so that the driving device can be controlled by a wired dimmer based on power line communication and a wireless terminal such as a mobile phone based on wireless signals, making the driving device more convenient and flexible to control and the mode switching more simple.

[0124] In one embodiment, the second signal from the wireless electronic device is accessed by wireless-to-wired mode, and the second signal from the wired dimming device is accessed by wired mode. In one example, the wireless electronic device is implemented as a mobile phone, which connects to a remote server or router through wireless signals (such as WIFI signals), and the router connects to a power line communication gateway through a network cable, and then the gateway connects to the driving device and some dimmers based on power line communication through power lines; further, the second signal from the wireless electronic device accessed by wireless-to-wired mode can be understood as: the mobile phone generates corresponding dimming instructions based on dimming control on the application (such as a dedicated app for dimming), the dimming instructions are uploaded to the server and forwarded to the corresponding router, the router forwards the instructions to the gateway, and then the gateway modulates the second signal in a specific frequency range and transmits it to the driving device through the power line, and the control unit 504 of the driving device receives the second signal and demodulates the original control instructions, finally controls the lamp to realize the corresponding dimming operation. The second signal from the wired dimming device accessed by wired mode can be understood as: the wired dimmer generates a second signal in a specific frequency range based on the user's physical operation (such as rotating the knob), the second signal is transmitted to the gateway through the power line and forwarded to the corresponding driving device, and the control unit 504 of the driving device receives the second signal and demodulates the original control instructions, finally controls the lamp to realize the corresponding dimming operation. The transmission of signals in this process is based on wired transmission.

[0125] In one embodiment, the delivery unit 501 of the driving device accesses the first signal through the wired dimming device, so that the first signal can be controlled by the wired dimming device to form a specified strategy of operation; the specified strategy is a specified number of times and / or a specified duration of power-off of the first signal. Further, in this embodiment, the driving device can be more conveniently controlled by the wired dimming device.

[0126] In addition, based on the driving device provided in the above embodiments, the corresponding driving method is also provided below, and the related terms and features in this embodiment can be explained with reference to the above embodiments, and the above embodiments are referred toFigure 23 The driving method comprises the following steps:

[0127] S1, accessing a plurality of signals in a target wire through an access protection unit 503 in a state that a conveying unit 501 accesses the target wire;

[0128] S2, forming an impedance sudden increase of the access protection unit 503 when passing the signal in a specific frequency interval, and passing the second signal in the specific frequency interval with high impedance and passing the first signal in the non-specific frequency interval with low impedance to supply power for a driving unit 502 by setting an impedance adjuster 5031 in the access protection unit 503;

[0129] S3, accessing the second signal in isolation before the impedance adjuster 5031 in the access protection unit 503 through a transceiving unit; and

[0130] S4, controlling the driving unit 502 to perform the dimming action pointed by the second signal.

[0131] Further, the method further comprises:

[0132] In a state that the driving unit 502 is powered through the first signal accessed by the impedance adjuster 5031, hindering the high-frequency interference signal generated by the driving unit 502 powered by the first signal from connecting to the access protection unit 503 through a first capacitor 5032 connected between the zero line and the live line on the side of the impedance adjuster 5031 towards the driving unit 502 to form the second direction protection of the second signal.

[0133] Further, in an example, step S2 specifically comprises:

[0134] In a state that the first inductor accesses the first signal through the conveying unit 501, forming the impedance sudden increase of the second signal in the specific frequency interval passing through the access protection unit 503 based on the frequency selection characteristics of the first inductor to form the first direction protection of the second signal.

[0135] Further, in another example, step S2 specifically comprises:

[0136] In a state that the first inductor and the second inductor access the second signal in the differential mode through the target wire, forming the impedance sudden increase of the second signal in the specific frequency interval passing through the access protection unit 503 based on the frequency selection characteristics of the first inductor and the second inductor to form the first direction protection of the second signal; wherein the inductance values of the first inductor and the second inductor are the same.

[0137] Further, the specific frequency range is set to 2.4MHz-5.6MHz, and the inductance of the first inductor and / or the second inductor is set to 33uH-1mH, so that the maximum insertion loss of the access protection unit 503 corresponds to a frequency within the specific frequency range.

[0138] Further, the transceiving unit includes a first transformer and a third capacitor; and the access of the second signal to the impedance regulator 5031 in the access protection unit 503 is isolated by the transceiving unit, specifically including:

[0139] In the state that the transmission unit 501 accesses the target wire, the third capacitor and the primary side of the first transformer are electrically connected to form selectivity to the specific frequency range signal;

[0140] The second signal is accessed to the secondary side of the first transformer in isolation.

[0141] Further, the method further includes:

[0142] In the state that the transmission unit 501 accesses the target wire, the first signal and the second signal loaded in the target wire are accessed; and the third signal is generated when the first signal is manipulated according to a specified strategy;

[0143] The first signal is used to power the driving unit 502;

[0144] Different manipulations are performed based on the second signal and the third signal.

[0145] Further, the third signal is generated when the first signal is manipulated according to a specified strategy, specifically including:

[0146] The third signal is generated when the first signal is cut off for a predetermined number of times within a specified time, and the control unit 504 is connected to a specified network in response to the third signal to send a specified network signal to the outside, so that a networked device receiving the specified network signal responds to the specified network signal to indicate that the control unit 504 is connected to the specified network, so that the driving device establishes a communicable connection relationship with at least one wireless electronic device having a display interface through the specified network in the state that the control unit 504 is connected to the specified network.

[0147] Further, the method further includes:

[0148] In the first dimming mode, the second signal is manipulated from a wireless electronic device;

[0149] In the second dimming mode, the second signal is manipulated from a wired dimming device or the wireless electronic device; and

[0150] The command from the application executed in the first dimming mode activates the second dimming mode.

[0151] Further, the second signal from the wireless electronic device is accessed by wireless to wired mode, and the second signal from the wired dimming device is accessed by wired mode.

[0152] Further, the first dimming mode is entered by default.

[0153] In addition, the application further provides a dimming system comprising the driving device described above; or,

[0154] The driving device capable of implementing the driving method is comprised;

[0155] A luminaire 600 is electrically connected to the driving device, so as to be capable of being controlled by the driving device to change the brightness and / or color temperature;

[0156] At least one wired dimming device and / or at least one wireless dimming device is used to establish a communication connection relationship with the driving device, so as to generate dimming data corresponding to external dimming control, and further generate a second signal capable of being used to control the driving device.

[0157] In the description of the specification, the description of the terms "some embodiments", "a specific embodiment", "a specific implementation process", "an example", etc. means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the application. In the specification, the illustrative description of the above terms corresponds to the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0158] In addition, it should be noted that each of the above embodiments can be combined with each other, and the same or similar concepts or processes can not be described in some embodiments, that is, the technical solutions disclosed in the later embodiments (recorded in the order of the text) should include the technical solutions recorded in this embodiment and the technical solutions in all the embodiments before this embodiment.

[0159] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the application, and not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the application.

Claims

1. A driving device adapted to be electrically connected to a luminaire to drive and dim the luminaire, characterized in that, The driving device includes: Bottom shell; A first housing, which covers the bottom housing to form a receiving space; A circuit carrier, at least partially housed within the receiving space, and carrying a transmission unit for connecting and / or disconnecting a target conductor; the target conductor being used to carry a first signal and a second signal; the transmission unit being a wiring component for connecting a power line; and, A drive module, which is carried within the accommodating space of the circuit carrier; wherein the drive module includes: At least one driving unit is used to electrically connect the illuminator to drive the illuminator to emit light; An access protection unit is electrically connected to the transmission unit to access multiple signals loaded in the target conductor when the transmission unit is connected to the target conductor. The drive device accesses a second signal loaded in the power line through the access protection unit. The access protection unit is provided with an impedance regulator to form a sudden increase in impedance of a signal in a specific frequency range passing through the access protection unit. The access protection unit is then configured to pass a second signal in the specific frequency range with high impedance to form high impedance isolation protection for the second signal in the specific frequency range, and to pass a first signal in a non-specific frequency range with low impedance to power the drive unit; wherein the frequency of the first signal is lower than the frequency of the second signal. A control unit is isolated from the impedance regulator in the access protection unit via a transceiver unit, the transceiver unit being selective for the specific frequency range, and the drive device receives the second signal in isolation via the transceiver unit, stably extracts the second signal, and controls the drive unit to perform the dimming action indicated by the second signal. The control unit is connected to the second signal before the impedance regulator in the access protection unit via a first transformer and a third capacitor. The first transformer has the third capacitor connected in series between its primary side and the end of the impedance regulator of the access protection unit facing the transmission unit, and its secondary side is directly or indirectly electrically connected to the control unit. When the transmission unit is connected to the target wire, the third capacitor is electrically connected to the primary side of the first transformer to form a transceiver unit with selective frequency range, so that the control unit can access the second signal in isolation from the secondary side of the first transformer.

2. The drive apparatus according to claim 1, characterized by The access protection unit also connects a first capacitor between the neutral and live wires on the side of the impedance regulator facing the drive unit, so as to block the interference signal generated by the drive unit connected to the access protection unit being powered by the first signal when the drive unit is powered through the impedance regulator.

3. The drive apparatus according to claim 2, characterized by The access protection unit connects a first inductor in series on the neutral or live wire between the transmission unit and the drive unit to form the impedance regulator. When the first inductor is connected to the first signal through the transmission unit, based on the frequency selection characteristics of the first inductor, a sudden increase in the impedance of the second signal in a specific frequency range through the access protection unit is formed.

4. The drive apparatus according to claim 2, characterized by The access protection unit provides a first inductor and a second inductor on the neutral and live wires of the first capacitor facing the transmission unit to form the impedance regulator; so that when the first inductor and the second inductor are connected to the second signal through the target wire, based on the frequency selection characteristics of the first inductor and the second inductor, the impedance of the second signal in a specific frequency range through the access protection unit increases abruptly; wherein the inductance values ​​of the first inductor and the second inductor are the same.

5. Drive arrangement according to claim 3 or 4, characterized in that The specific frequency range is set to 1MHz~12MHz.

6. The drive apparatus according to claim 5, characterized by The specific frequency range is set to 2.4MHz to 5.6MHz.

7. The drive apparatus according to claim 6, characterized by The inductance of the first inductor is set to 33uH~1mH.

8. The drive apparatus according to claim 2, characterized by The access protection unit also connects a second capacitor between the neutral and live wires on the side of the impedance regulator facing the drive unit; the capacitance value of the second capacitor is different from that of the first capacitor, and the capacitance parameters of the first and second capacitors are configured so that the capacitors can cooperate with each other so that the self-resonant frequency is in the specific frequency range.

9. The driving device according to claim 2, characterized in that, The access protection unit also has at least one common-mode choke between the transmission unit and the impedance regulator.

10. The driving device according to claim 1, characterized in that, The driving device further includes a filter protection circuit, which is disposed at both ends of the secondary side of the first transformer. This circuit includes a first diode, a second diode, a third diode, and a fourth diode. The anode of the first diode and the cathode of the second diode are electrically connected and then connected to one end of the secondary side of the first transformer. The cathode of the first diode is electrically connected to a specified voltage, and the anode of the second diode is grounded. The anode of the third diode and the cathode of the fourth diode are electrically connected and then connected to the other end of the secondary side of the first transformer. The cathode of the third diode is electrically connected to the specified voltage, and the anode of the fourth diode is grounded.

11. The driving device according to any one of claims 1-4 and 6-10, characterized in that, The drive unit converts the received AC first signal into a DC signal and steps it down to a first limited voltage range via a step-down regulator circuit to power a dimming drive circuit electrically connected to the step-down regulator circuit. The dimming drive circuit is electrically connected to the control terminal of the control unit to drive the illuminator to perform the corresponding dimming action under the control of the control unit.

12. The driving device according to claim 11, characterized in that, The transceiver unit includes a first transceiver subunit and a second transceiver subunit. In a state where the buck regulator circuit and the dimming drive circuit are separately configured, the first transceiver subunit is integrated with the buck regulator circuit, and the second transceiver subunit is integrated with the dimming drive circuit, to form a transceiver unit with multi-level transceiver function, so that the control unit can access the second signal through the first transceiver subunit and the second transceiver subunit in a multi-level grounding and isolation manner.

13. The driving device according to claim 12, characterized in that, The first transceiver subunit has a fourth capacitor connected in series between the primary side of a second transformer and the end of the impedance regulator of the access protection unit facing the transmission unit, and a fifth capacitor electrically connected between its secondary side and the output terminal of the step-down voltage regulator circuit, thus possessing bidirectional transceiver capability.

14. The driving device according to claim 12, characterized in that, The second transceiver subunit forms a signal access port on the primary side of a third transformer through a sixth capacitor, and is directly or indirectly electrically connected to the control unit on its secondary side. In the state where the first transceiver subunit and the second transceiver subunit are electrically connected and the transmission unit is connected to the target wire, the sixth capacitor is electrically connected to the primary side of the third transformer to form a second transceiver subunit that is selective for the specific frequency range, so that the control unit can access the second signal in isolation on the secondary side of the third transformer.

15. The driving device according to claim 12, characterized in that, The second transceiver subunit includes a sixth capacitor, one end of which forms a signal access port, and the other end is directly or indirectly electrically connected to the control unit, so that when the first transceiver subunit and the second transceiver subunit are electrically connected and the transmission unit is connected to the target wire, the second signal that is isolated from the first transceiver subunit is connected to the control unit in a DC-blocking manner.

16. The driving device according to claim 11, characterized in that, The buck regulator circuit includes a rectifier circuit, a power factor correction circuit, and a switching power supply circuit connected in sequence, so that the first input signal is rectified, power factor corrected, and bucked in sequence and then regulated to a first limited voltage range to power the dimming drive circuit; wherein the buck regulator circuit further bucks the output voltage of the first limited voltage range to a second limited voltage through a buck circuit and boosts the second limited voltage to a third limited voltage through a boost circuit; wherein the second limited voltage and the third limited voltage are used to power the control unit in sequence; the third limited voltage is less than the starting voltage value of the first limited voltage range.

17. The driving device according to claim 1, characterized in that, The drive module is capable of receiving a first signal and a second signal loaded in the target conductor when the delivery unit is connected to the target conductor; wherein the control unit is capable of generating a third signal when the first signal and / or the second signal is cut off according to a specified strategy; the first signal is used to power the drive unit, and the second signal and the third signal are used to instruct the control unit to perform different control actions.

18. The driving device according to claim 17, characterized in that, The control unit is capable of generating a third signal when the first signal and / or the second signal is cut off according to a specified strategy, specifically for: A third signal is generated when the first signal and / or the second signal are cut off a predetermined number of times within a specified time. In response to the third signal, the device enters a distribution network mode to send a specified distribution network signal to a network device that receives the specified distribution network signal. The device then instructs the control unit to connect to the specified network in response to the specified distribution network signal. This enables the drive device to establish a communicable connection with at least one wireless electronic device with a display interface through the specified network while the control unit is connected to the specified network.

19. The driving device according to claim 17, characterized in that, The control unit has a first dimming mode that can be controlled by a second signal originating from a wireless electronic device; and a second dimming mode that can be controlled by a second signal originating from a wired dimming device or the wireless electronic device. The control unit is configured to execute a command from an application to activate a second dimming mode in the first dimming mode.

20. The driving device according to claim 19, characterized in that, Access to a second signal originating from the wireless electronic device via a wireless-to-wired method; access to a second signal originating from the wired dimming device via a wired method.

21. A driving method, characterized in that, Including the following steps: In a state where a transmission unit is connected to a target conductor, multiple signals in the target conductor are connected through an access protection unit. The drive device connects to a second signal loaded in the power line through the access protection unit. The target conductor is used to carry the first signal and the second signal. The transmission unit is a wiring component used to connect to the power line. An impedance regulator is provided in the access protection unit to form an impedance surge when a signal in a specific frequency range passes through the access protection unit, thereby allowing the second signal in the specific frequency range to pass through with high impedance, so as to form high impedance isolation protection for the second signal in the specific frequency range, and to allow the first signal in a non-specific frequency range to pass through with low impedance to power a drive unit. The second signal is isolated from the impedance regulator in the access protection unit via a transceiver unit, the transceiver unit being selective for the specific frequency range, and the driving device receives the second signal isolatedly through the transceiver unit, stably extracting the second signal; and, Control the drive unit to execute the dimming action indicated by the second signal; The transceiver unit includes a first transformer and a third capacitor; the method of isolating the second signal through a transceiver unit before the impedance regulator in the access protection unit specifically includes: When the transmission unit is connected to the target conductor, the third capacitor is electrically connected to the primary side of the first transformer to form selectivity for the signal in the specific frequency range; The second signal is connected to the secondary side of the first transformer in an isolated manner.

22. The driving method according to claim 21, characterized in that, The method further includes: When the drive unit is powered by the first signal through the impedance regulator, a first capacitor connected across the neutral and live wires on the side of the impedance regulator facing the drive unit blocks the high-frequency interference signal generated by the drive unit being powered by the first signal, thereby forming a second-direction protection for the second signal.

23. The driving method according to claim 22, characterized in that, The access protection unit connects a first inductor in series on the neutral or live wire between the transmission unit and the drive unit to form the impedance regulator; the high-impedance second signal passing through a specific frequency range specifically includes: When the first inductor is connected to the first signal via the transmission unit, based on the frequency selectivity of the first inductor, a second signal in a specific frequency range is formed by a sudden increase in impedance through the access protection unit to form protection for the second signal in the first direction.

24. The driving method according to claim 22, characterized in that, The access protection unit provides a first inductor and a second inductor on the neutral and live wires of the first capacitor facing the transmission unit, respectively, to form the impedance regulator; the high-impedance second signal passing through a specific frequency range specifically includes: When the first inductor and the second inductor are connected to the second signal in differential mode via the target conductor, based on the frequency selectivity of the first inductor and the second inductor, the impedance of the second signal in a specific frequency range increases suddenly through the access protection unit to form protection for the second signal in the first direction; wherein the inductance of the first inductor and the second inductor is the same.

25. The driving method according to claim 23 or 24, characterized in that, The specific frequency range is set to 2.4MHz~5.6MHz, and the inductance of the first inductor is set to 33uH~1mH, so that the frequency corresponding to the maximum insertion loss of the access protection unit is within the specific frequency range.

26. The driving method according to claim 21, characterized in that, The method further includes: When the transmission unit is connected to the target conductor, a first signal and a second signal are loaded into the target conductor; and a third signal is generated when the first signal is manipulated according to a specified strategy. The drive unit is powered by the first signal; Different operations are performed based on the second signal and the third signal.

27. The driving method according to claim 26, characterized in that, A third signal is generated when the first signal is manipulated according to a specified strategy, specifically including: When the first signal is cut off a predetermined number of times within a specified time, a third signal is generated, and in response to the third signal, a network device that receives the specified network signal is sent to the outside to enable the control unit to connect to the specified network in response to the specified network signal, so that the drive device establishes a communicable connection with at least one wireless electronic device with a display interface through the specified network while the control unit is connected to the specified network.

28. The driving method according to claim 26, characterized in that, The method further includes: In the first dimming mode, it is controlled by a second signal originating from a wireless electronic device; In the second dimming mode, it is controlled by a second signal originating from a wired dimming device or the wireless electronic device; and, Executing a command from an application in the first dimming mode activates the second dimming mode.

29. The driving method according to claim 28, characterized in that, Access to a second signal originating from the wireless electronic device via a wireless-to-wired method; access to a second signal originating from the wired dimming device via a wired method.

30. A driving device adapted to be electrically connected to a luminaire to drive and dim the luminaire, characterized in that, The driving device includes: A transmission unit is used to connect to and / or connect to a target conductor; the target conductor is used to carry a first signal and a second signal; the transmission unit is a wiring component used to connect to a power line; A drive unit electrically connected to the conveying unit is capable of receiving a first signal loaded in the target wire to form a power supply when the conveying unit is connected to the target wire. A control unit electrically connected to the transmission unit and the drive unit is configured to isolate and connect to a second signal loaded in the target wire via a transceiver unit in a state where the transmission unit is connected to the target wire and in a state where it is powered by the power supply, and to the transceiver unit is grounded at least twice. The transceiver unit is selective for a specific frequency range. The drive unit receives the second signal isolated through the transceiver unit and stably extracts the second signal so that the illuminator can perform the dimming action indicated by the second signal. The transceiver unit includes a first transceiver subunit; the first transceiver subunit has a fourth capacitor connected in series between the primary side of a second transformer and the end of the impedance regulator connected to the protection unit facing the transmission unit, so that when the second signal enters the first transceiver subunit from the first direction, it is selected by a signal selection circuit with high-pass characteristics formed by the electrical connection of the fourth capacitor and the primary side of the second transformer, and is injected into the secondary side of the second transformer in isolation.

31. The driving device according to claim 30, characterized in that, The drive unit converts the received AC first signal into a DC signal and steps it down to a first limited voltage range via a step-down regulator circuit to form the power supply, which powers a dimming drive circuit electrically connected to the step-down regulator circuit. The dimming drive circuit is electrically connected to the control terminal of the control unit to drive the illuminator to perform the corresponding dimming action under the control of the control unit. The control unit is connected to the second signal through a transceiver unit with two-stage grounding and isolation. The transceiver unit includes a first transceiver subunit and a second transceiver subunit. In the state where the step-down voltage regulator circuit and the dimming drive circuit are set separately, the first transceiver subunit is integrated with the step-down voltage regulator circuit, and the second transceiver subunit is integrated with the dimming drive circuit to form a transceiver unit with multi-level transceiver function.

32. The driving device according to claim 31, characterized in that, The first transceiver subunit has a fourth capacitor connected in series between the primary side of a second transformer and the end of the impedance regulator of the access protection unit facing the transmission unit, and a fifth capacitor electrically connected between its secondary side and the output terminal of the step-down voltage regulator circuit, thus having bidirectional transceiver capability. Thus, when the second signal enters the first transceiver subunit from the first direction, it is selected by a high-pass signal selection circuit formed by the electrical connection of the fourth capacitor and the primary side of the second transformer, and is injected into the secondary side of the second transformer in isolation, and then coupled again to the DC signal output by the buck regulator circuit through the fifth capacitor. When the second signal enters the first transceiver subunit from the second direction, it is selected by a high-pass signal selection circuit formed by the electrical connection of the fifth capacitor and the secondary side of the second transformer, and is injected into the primary side of the second transformer in isolation. Then, it is coupled again to the target wire connected to the transmission unit through the fourth capacitor.

33. The driving device according to claim 31, characterized in that, The second transceiver subunit forms a signal access port on the primary side of a third transformer through a sixth capacitor, and is directly or indirectly electrically connected to the control unit on its secondary side. In the state where the first transceiver subunit and the second transceiver subunit are electrically connected and the transmission unit is connected to the target wire, the sixth capacitor is electrically connected to the primary side of the third transformer to form a second transceiver subunit that is selective for the specific frequency range, so that the control unit can access the second signal in isolation on the secondary side of the third transformer.

34. A dimming system, characterized in that, Includes the drive device as described in any one of claims 1-20, the drive device as described in any one of claims 30-33, or, A driving device capable of implementing the driving method as described in any one of claims 21-29; An illuminator electrically connected to the driving device, so as to be able to controllably vary its brightness and / or color temperature by the driving device; At least one wired dimming device and / or at least one wireless dimming device are used to establish a communication connection with the drive device so as to generate dimming data in response to external dimming control, thereby generating a second signal that can be used to control the drive device.

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