Apparatus and method for dimming
By setting up an on/off control circuit and a dimming control unit, and generating on/off control signals and indication signals, the problem of mismatch between the dimmer and the load power is solved, enabling multiple dimmers to simultaneously power high-power loads, thus improving the reliability of the circuit and the stability of the signals.
Patent Information
- Application Number
- CN202410516981.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2025-10-28
AI Technical Summary
Existing dimming control methods are not flexible enough, resulting in a mismatch between the power of the dimmer and the power of the load, making it impossible to effectively control the power of multiple loads.
By setting up on/off control circuits, dimming control units, detection units, and switching units, on/off control signals and on/off indication signals are generated to control the on/off of dimming execution units and switching units, enabling multiple dimmers to simultaneously supply power to a group of loads.
This technology enables multiple dimmers to jointly control a group of high-power loads, improving the reliability of circuit connection and disconnection, ensuring the protection of the switching unit, and enhancing the stability of electrical signal transmission.
Smart Images
Figure CN120857334A_ABST
Abstract
Description
Technical Field
[0001] Embodiments of this disclosure relate to the field of electrical equipment, and more specifically to an apparatus and method for dimming. Background Technology
[0002] Currently, dimmers used in the KNX bus employ both multi-channel and single-channel control methods. Single-channel control can manage high-power loads but can only control one group of loads. While multi-channel control can manage multiple groups of loads, each group has a relatively low power output. However, the power of the loads to be controlled is unpredictable in different application scenarios. Therefore, existing dimming control methods are not flexible enough, potentially leading to a power mismatch between one or more dimmer channels and the load power. Thus, design optimization is necessary. Summary of the Invention
[0003] The purpose of this disclosure is to provide an apparatus and method for dimming, so as to at least partially solve the above-mentioned problems.
[0004] In a first aspect of this disclosure, an apparatus for dimming is provided, comprising: an on / off control circuit connected to a power supply and capable of generating an on / off control signal; and a plurality of dimmers, each dimmer including a dimming control unit, a dimming execution unit, a detection unit, and a switching unit, wherein the dimming control unit is coupled to the on / off control circuit to receive the on / off control signal, the dimming execution unit is connected to the dimming control unit and a live wire, the detection unit is connected to the dimming execution unit and the dimming control unit, the detection unit is capable of detecting the voltage of the live wire and generating an on / off indication signal if the amplitude of the voltage of the live wire exceeds a predetermined threshold, the switching unit is connected to the live wire, a load, and the dimming control unit, and the dimming control unit is capable of controlling the switching unit and the dimming execution unit to turn on based on the on / off control signal and the on / off indication signal, so that the voltage on the live wire is delivered to the load.
[0005] According to the apparatus of the present disclosure, by setting an on / off control circuit, multiple dimmers can be reliably controlled to turn on and off. Each dimmer can reliably control the dimming execution unit to turn on and off by setting a dimming control unit. By setting a detection unit, an on / off indication signal can be generated when the voltage amplitude of the live wire exceeds a predetermined threshold, so that the dimming control unit controls the switching unit and the dimming execution unit to turn on in sequence, thereby enabling each dimmer to simultaneously deliver the voltage of the live wire to the load, so that multiple dimmers can jointly control a group of loads with high power.
[0006] In some embodiments, the apparatus further includes a plurality of isolators, each isolator having one end connected to the on / off control circuit and the other end connected to one of the plurality of dimmers. In such an embodiment, by providing an isolator between the on / off control circuit and the plurality of dimmers, the electrical signals of the on / off control circuit and the electrical signals between the plurality of dimmers can be reliably isolated.
[0007] In some embodiments, the dimming control unit of each dimmer is connected to a corresponding isolator among the plurality of isolators, and the dimming control unit is capable of generating an on / off indication signal to indicate whether the switching unit and the dimming execution unit are turned on or off. In such an embodiment, the on / off control circuit can determine the on / off state of each dimmer based on the on / off indication signal.
[0008] In some embodiments, the on / off control circuit includes: a communication unit connected to a power supply and capable of generating a communication signal; an on / off control unit connected to the communication unit and capable of generating the on / off control signal based on the communication signal; and an AND gate circuit, the output of which is connected to the on / off control unit and the input of which is connected to the plurality of dimmers, the AND gate circuit being capable of receiving a plurality of on / off indication signals and generating a status indication signal based on the plurality of on / off indication signals. In such an embodiment, by employing an AND gate circuit, the on / off indication signals generated by a plurality of dimmers can be received, enabling the on / off control circuit to simultaneously detect the on / off status of a plurality of dimmers.
[0009] In some embodiments, the dimming execution unit includes a plurality of drive units connected to a corresponding dimming control unit, the plurality of drive units being capable of generating drive signals under the control of the dimming control unit. In such embodiments, by employing drive units, drive signals can be reliably generated under the control of the dimming control unit.
[0010] In some embodiments, the dimming execution unit further includes a plurality of MOSFETs connected in series between the fire wire and the switching unit. The gate of each MOSFET is connected to a corresponding driving unit among the plurality of driving units, and each MOSFET can be turned on and off under the control of the driving signal. In such an embodiment, the use of MOSFETs enables reliable switching on and off under the control of the driving signal.
[0011] In some embodiments, the number of the plurality of driving units is two, and the number of the plurality of MOS transistors is two.
[0012] In a second aspect of this disclosure, a method for dimming is provided, comprising: generating an on / off control signal by an on / off control circuit; receiving the on / off control signal by a dimming control unit of a dimmer; detecting the voltage of a live wire by a detection unit of the dimmer, and generating an on / off indication signal if the amplitude of the voltage of the live wire exceeds a predetermined threshold; and controlling a switching unit and a dimming execution unit to turn on based on the on / off control signal and the on / off indication signal, so that the voltage on the live wire is delivered to a load.
[0013] In some embodiments, the method further includes: generating an on / off indication signal by the dimming control unit to indicate whether the switching unit and the dimming execution unit are turned on or off.
[0014] In some embodiments, generating an on / off control signal by an on / off control circuit includes: generating a communication signal by a communication unit; generating the on / off control signal by an on / off control unit based on the communication signal; and receiving a plurality of on / off indication signals by an AND gate circuit and generating a status indication signal based on the plurality of on / off indication signals.
[0015] In some embodiments, the method further includes generating drive signals by a plurality of drive units under the control of the dimming control unit.
[0016] In some embodiments, the method further includes: turning each of the plurality of MOS transistors on and off under the control of the drive signal.
[0017] In some embodiments, the number of the plurality of driving units is two, and the number of the plurality of MOS transistors is two.
[0018] In some embodiments, there are multiple dimmers, and the dimming control unit of the multiple dimmers can synchronously control the corresponding switching unit and dimming execution unit to turn on based on the turn-on control signal and the turn-on indication signal, so that the voltage on the live wire is delivered to the load.
[0019] It should be understood that the content described in this section is not intended to limit the key or essential features of the embodiments of this disclosure, nor is it intended to restrict the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description
[0020] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein:
[0021] Figure 1A schematic diagram of a dimming apparatus according to an embodiment of the present disclosure is shown;
[0022] Figure 2 A circuit diagram of a dimming apparatus according to an embodiment of the present disclosure is shown;
[0023] Figure 3 A flowchart illustrating a dimming process according to an embodiment of the present disclosure is shown; and
[0024] Figure 4 A flowchart of a method for dimming according to an embodiment of the present disclosure is shown.
[0025] Explanation of reference numerals in the attached figures:
[0026] 10 On / off control circuits 20 Dimmers
[0027] 21 Dimming control unit 22 Dimming execution unit
[0028] 23 Detection Unit 24 Switching Unit
[0029] 30 isolators and 11 communication units
[0030] 12 On / off control unit 13 AND gate circuit
[0031] 221 drive unit 222 MOS transistor
[0032] 100 load 200 fire wire Detailed Implementation
[0033] Preferred embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.
[0034] The term "comprising" and its variations as used herein signify open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "at least partially based on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc., may refer to different or the same objects.
[0035] As described above, existing dimming control methods are not flexible enough, which may cause a power mismatch between the dimmers on one or more channels and the load power. Embodiments of this disclosure provide a dimming device in which an on / off control circuit reliably controls the switching on and off of multiple dimmers. Each dimmer, through a dimming control unit, reliably controls the switching on and off of a dimming execution unit. A detection unit generates an on / off indication signal when the voltage amplitude of the live wire exceeds a predetermined threshold, causing the dimming control unit to sequentially control the switching unit and the dimming execution unit to turn on. This allows each dimmer to simultaneously deliver the voltage from its live wire to the load, enabling multiple dimmers to jointly control a group of high-power loads. In the following sections, [further details will be provided]. Figures 1 to 4 The principles of this disclosure are described.
[0036] Figure 1 A schematic diagram of a dimming apparatus according to an embodiment of the present disclosure is shown. Figure 1 As shown, the apparatus described herein generally includes an on / off control circuit 10 and a plurality of dimmers 20. The plurality of dimmers 20 are connected to a load 100 and a live wire 200 to regulate the operating state of the load 100 using the voltage on the live wire 200. The on / off control circuit 10 is connected to the plurality of dimmers 20 and a power supply, and is capable of generating an on / off control signal to control each of the plurality of dimmers 20 to be turned on.
[0037] Figure 2 A circuit diagram of a dimming apparatus according to an embodiment of the present disclosure is shown. Figure 2 As shown, each of the plurality of dimmers 20 includes a dimming control unit 21, a dimming execution unit 22, a detection unit 23, and a switching unit 24. The dimming control unit 21 is coupled to the on / off control circuit 10 to receive an on / off control signal. The dimming execution unit 22 is connected to the dimming control unit 21 and the live wire 200. The detection unit 23 is connected to the dimming execution unit 22 and the dimming control unit 21. The detection unit 23 can detect the voltage of the live wire 200 and generate an on / off indication signal if the amplitude of the voltage of the live wire 200 exceeds a predetermined threshold. The switching unit 24 is connected to the live wire 200, the load 100, and the dimming control unit 21. The dimming control unit 21 can control the switching unit 24 and the dimming execution unit 22 to turn on based on the on / off control signal and the on / off indication signal, so that the voltage on the live wire 200 is delivered to the load 100.
[0038] In one embodiment, when the voltage amplitude of the live wire 200 is greater than zero, the detection unit 23 generates a turn-on indication signal, causing the dimming control unit 21 to control the switching unit 24 and the dimming execution unit 22 to turn on sequentially at that time. In this way, the switching unit 24 can be turned on before the live wire 200 is turned on, so that no current flows when the switch contacts of the switching unit 24 are closed, protecting the switch contacts of the switching unit 24 and improving the reliability of the circuit connection.
[0039] In one embodiment, such as Figure 2 As shown, multiple dimmers 20 can be connected to the same live wire 200. When the detection unit 23 of each dimmer 20 detects that the voltage amplitude of the live wire 200 exceeds a predetermined threshold, it can simultaneously generate an on / off indication signal, so that the dimming control unit 21 of each dimmer 20 controls the switching unit 24 and the dimming execution unit 22 to be turned on sequentially at that time. In this way, multiple dimmers 20 can be turned on at the same time to synchronously deliver the voltage on the live wire 200 to the load 100, thereby jointly powering the same group of loads 100 with higher power.
[0040] In one embodiment, the on / off control circuit 10 can generate a shutdown control signal. Upon receiving the shutdown control signal, the dimming control unit 21 of each dimmer 20 can control the dimming execution unit 22 and the switching unit 24 to shut down sequentially. In this way, the switching unit 24 can be shut down after the connection with the live wire 200 is disconnected, so that no current flows when the switching contacts of the switching unit 24 are open, protecting the switching contacts of the switching unit 24 and improving the reliability of circuit shutdown.
[0041] In one embodiment, the on / off control circuit 10 can provide on control signals and off control signals to a plurality of dimmers 20 in a fixed sequence, so that the plurality of dimmers 20 can supply power to the load 100 based on a fixed timing sequence. The number of on control signals and the duration of off control signals can be determined according to the actual operating requirements of the load 100, and the embodiments of this disclosure do not limit this.
[0042] In one embodiment, such as Figure 2 As shown, the device may further include multiple isolators 30. One end of each isolator 30 is connected to the on / off control circuit 10 and the other end is connected to one of the multiple dimmers 20. By employing isolators, the electrical signals of the on / off control circuit and the electrical signals between the multiple dimmers can be reliably isolated, improving the stability of electrical signal transmission. It should be understood that, based on the teachings given in this disclosure, those skilled in the art can conceive of any type of isolator to achieve the above functions, and such implementations all fall within the scope of this disclosure.
[0043] Continue to refer to Figure 2 In one embodiment, the dimming control unit 21 of each dimmer 20 is connected to a corresponding isolator 30 among a plurality of isolators 30. The dimming control unit 21 is capable of generating an on / off indication signal for indicating whether the switching unit 24 and the dimming execution unit 22 are turned on or off. In this way, the on / off control circuit can determine the on / off state of each dimmer based on the on / off indication signal.
[0044] In one embodiment, such as Figure 2 As shown, the on / off control circuit 10 may include a communication unit 11, an on / off control unit 12, and an AND gate circuit 13. The communication unit 11 is connected to a power supply and is capable of generating communication signals. The on / off control unit 12 is connected to the communication unit 11 and is capable of generating an on / off control signal based on the communication signals. The output of the AND gate circuit 13 is connected to the on / off control unit 12, and its input is connected to multiple dimmers 20. The AND gate circuit 13 is capable of receiving multiple on / off indication signals and generating a status indication signal based on these signals. In one embodiment, the communication unit 11 may be communicatively connected to an external line to send and receive communication signals, thereby communicating with the external line based on a predetermined communication protocol. For example, the communication unit 11 may be connected to a KNX bus and communicate with the KNX bus based on the KNX protocol. It should be understood that the communication unit 11 may be connected to any other type of external line and may communicate based on any communication protocol; the embodiments of this disclosure do not limit this.
[0045] In one embodiment, the on / off control unit 12 may employ a microcontroller unit (MCU) to reliably provide on or off control signals to the plurality of dimmers 20. It should be understood that, based on the teachings of this disclosure, those skilled in the art can conceive of any type of on / off control unit to implement the above functions, and such implementations fall within the scope of this disclosure.
[0046] Continue to refer to Figure 2In one embodiment, the dimming execution unit 22 may include a plurality of drive units 221 and a plurality of MOSFETs 222. The plurality of drive units 221 are connected to a corresponding dimming control unit 21. The plurality of drive units 221 can generate drive signals under the control of the dimming control unit 21. The plurality of MOSFETs 222 are connected in series between the live wire 200 and the switching unit 24. The gate of each of the plurality of MOSFETs 222 is connected to a corresponding drive unit 221 among the plurality of drive units 221. Each MOSFET 222 can be turned on and off under the control of the drive signal. In one embodiment, each of the plurality of drive units 221 can output a drive voltage of a certain amplitude under the control of the dimming control unit 21 to drive the corresponding MOSFET 222 to turn on or off, thereby realizing the connection or disconnection of the current on the live wire 200. It should be understood that, based on the teachings given in this disclosure, those skilled in the art can conceive of any type of dimming execution unit to implement the above functions, and such implementations all fall within the scope of this disclosure.
[0047] In one embodiment, such as Figure 2 As shown, the on / off control circuit 10 can control two dimmers 20 simultaneously. In other embodiments, the on / off control circuit 10 can control more dimmers 20 simultaneously, such as three or four, all of which fall within the scope of this disclosure. The control method for multiple dimmers 20 is similar to the control method using two dimmers 20 as an example described above, and will not be elaborated further here.
[0048] Figure 3 A flowchart of a dimming process 300 according to an embodiment of the present disclosure is shown. In some embodiments, process 300 can be performed as follows: Figure 1 and Figure 2 The process is performed at the apparatus shown. It should be understood that process 300 may also include additional boxes not shown and / or one (or some) of the boxes shown may be omitted, and the scope of this disclosure is not limited in this respect.
[0049] In block 311, multiple dimmers 20 in the device can be connected by wiring. In one embodiment, multiple dimmers 20 connected by wiring can collectively control the same load 100.
[0050] In block 312, the on / off control circuit 10 groups the connected plurality of dimmers 20. In one embodiment, two dimmers 20 of the plurality of dimmers 20 may be grouped together so that the two dimmers 20 in the group jointly control the same load 100.
[0051] In block 313, the device is powered on, and the detection unit 23 is activated. In one embodiment, the on / off control circuit 10 can control the detection unit 23 to activate via a control signal.
[0052] In frame 314, detection unit 23 detects the voltage of the live wire.
[0053] In block 315, detection unit 23 determines whether the voltage amplitude of live wire 200 exceeds a predetermined threshold. If it exceeds the predetermined threshold, process 300 proceeds to block 316. If it does not exceed the predetermined threshold, process 300 returns to block 311.
[0054] In frame 316, detection unit 23 generates an on / off indication signal.
[0055] In block 317, the switching unit 24 and the dimming execution unit 22 are sequentially turned on. In one embodiment, the on / off control circuit 10 generates an on / off control signal with a predetermined duty cycle, thereby controlling the switching unit 24 and the dimming execution unit 22 to turn on and off in a predetermined timing sequence.
[0056] In frame 318, the dimming control unit 21 generates an on / off indication signal.
[0057] In block 319, the on / off control circuit 10 determines whether the states of each dimmer 20 are synchronized by receiving on / off indication signals. If the states of each dimmer 20 are the same, process 300 proceeds to block 320. If the states of each dimmer 20 are different, process 300 proceeds to block 321.
[0058] In block 320, all dimmers 20 remain on. In block 321, the dimming actuator 22 and the switching unit 24 are turned off sequentially. In block 322, the device is powered off, the on / off control circuit 10 generates a shutdown control signal, and then process 300 proceeds to block 321 where the dimming actuator 22 and the switching unit 24 are turned off sequentially, and process 300 ends.
[0059] Embodiments of this disclosure also provide a method 400 for dimming, such as... Figure 4 As shown. Method 400 can be derived from the above combined with Figures 1 to 2 The described dimming device performs the operation. For example... Figure 4 As shown, method 400 includes: in block 410, an on / off control circuit 10 generates an on / off control signal. In block 420, a dimming control unit 21 of the dimmer receives the on / off control signal. In block 430, a detection unit 23 of the dimmer detects the voltage of the live wire 200 and generates an on / off indication signal if the amplitude of the voltage of the live wire 200 exceeds a predetermined threshold. In block 440, the dimming control unit 21 of the dimmer controls the switching unit 24 and the dimming execution unit 22 to turn on based on the on / off control signal and the on / off indication signal, so that the voltage on the live wire 200 is delivered to the load 100.
[0060] In some embodiments, method 400 further includes generating an on / off indication signal by the dimming control unit 21 to indicate whether the switching unit 24 and the dimming execution unit 22 are turned on or off.
[0061] In some embodiments, the generation of the on / off control signal by the on / off control circuit 10 includes: generating a communication signal by the communication unit 11; generating the on / off control signal by the on / off control unit 12 based on the communication signal; and receiving a plurality of on / off indication signals by the AND gate circuit 13 and generating a status indication signal based on the plurality of on / off indication signals.
[0062] In some embodiments, method 400 further includes generating drive signals by a plurality of drive units 221 under the control of dimming control unit 21.
[0063] In some embodiments, method 400 further includes: turning each of the plurality of MOS transistors 222 on and off under the control of a drive signal.
[0064] In some embodiments, the number of driving units 221 is two, and the number of MOS transistors 222 is two.
[0065] In some embodiments, there are multiple dimmers 20, and the dimming control unit 21 of the multiple dimmers 20 can synchronously control the corresponding switching unit 24 and dimming execution unit 22 to be turned on based on the turn-on control signal and the turn-on indication signal, so that the voltage on the live wire 200 is delivered to the load 100.
[0066] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.
Claims
1. A device for dimming, characterized in that, include: On / off control circuit (10), the on / off control circuit (10) is connected to the power supply and is capable of generating an on / off control signal; as well as Multiple dimmers (20), each dimmer (20) including a dimming control unit (21), a dimming execution unit (22), a detection unit (23), and a switching unit (24), wherein the dimming control unit (21) is coupled to the on / off control circuit (10) to receive the on / off control signal, the dimming execution unit (22) is connected to the dimming control unit (21) and the live wire (200), and the detection unit (23) is connected to the dimming execution unit (22) and the dimming control unit (21), wherein the detection unit (23) is capable of detecting The voltage of the live wire (200) is measured, and an on-state indication signal is generated when the amplitude of the voltage of the live wire (200) exceeds a predetermined threshold. The switching unit (24) is connected to the live wire (200), the load (100), and the dimming control unit (21). The dimming control unit (21) can control the switching unit (24) and the dimming execution unit (22) to be turned on based on the on-state control signal and the on-state indication signal, so that the voltage on the live wire (200) is delivered to the load (100).
2. The apparatus according to claim 1, characterized in that, The device also includes a plurality of isolators (30), one end of each isolator (30) being connected to the on / off control circuit (10) and the other end being connected to one of the plurality of dimmers (20).
3. The apparatus according to claim 2, characterized in that, The dimming control unit (21) of each dimmer (20) is connected to a corresponding isolator (30) among the plurality of isolators (30), and the dimming control unit (21) is capable of generating on / off indication signals for instructing the switching unit (24) and the dimming execution unit (22) to be turned on or off.
4. The apparatus according to claim 3, characterized in that, The on / off control circuit (10) includes: A communication unit (11) is connected to a power source and is capable of generating communication signals; An on / off control unit (12) is connected to the communication unit (11) and is capable of generating the on / off control signal based on the communication signal; and AND gate circuit (13), the output of which is connected to the on / off control unit (12) and the input is connected to the plurality of dimmers (20). The AND gate circuit (13) is capable of receiving a plurality of on / off indication signals and generating a status indication signal based on the plurality of on / off indication signals.
5. The apparatus according to claim 1, characterized in that, The dimming execution unit (22) includes multiple drive units (221), which are connected to the corresponding dimming control unit (21). The multiple drive units (221) can generate drive signals under the control of the dimming control unit (21).
6. The apparatus according to claim 5, characterized in that, The dimming execution unit (22) further includes a plurality of MOS transistors (222) connected in series between the fire wire (200) and the switching unit (24). The gate of each MOS transistor (222) is connected to a corresponding driving unit (221) among the plurality of driving units (221). Each MOS transistor (222) can be turned on and off under the control of the driving signal.
7. The apparatus according to claim 6, characterized in that, The number of the plurality of driving units (221) is two, and the number of the plurality of MOS transistors (222) is two.
8. A method for dimming, comprising: The on / off control circuit (10) generates an on / off control signal; The dimming control unit (21) of the dimmer (20) receives the turn-on control signal; The detection unit (23) of the dimmer (20) detects the voltage of the live wire (200) and generates an on-state indication signal when the amplitude of the voltage of the live wire (200) exceeds a predetermined threshold. as well as The dimming control unit (21) of the dimmer (20) controls the switching unit (24) and the dimming execution unit (22) to turn on based on the turn-on control signal and the turn-on indication signal, so that the voltage on the live wire (200) is delivered to the load (100).
9. The method according to claim 8, further comprising: The dimming control unit (21) generates an on / off indication signal to indicate whether the switching unit (24) and the dimming execution unit (22) are turned on or off.
10. The method of claim 9, wherein generating the on / off control signal by the on / off control circuit (10) comprises: Communication signals are generated by the communication unit (11); The on / off control unit (12) generates the on / off control signal based on the communication signal; as well as The AND gate circuit (13) receives multiple on / off indication signals and generates a status indication signal based on the multiple on / off indication signals.
11. The method of claim 8, further comprising: Drive signals are generated by multiple drive units (221) under the control of the dimming control unit (21).
12. The method of claim 11, further comprising: Each of the multiple MOS transistors (222) is turned on and off under the control of the drive signal.
13. The method according to claim 12, wherein the number of the plurality of driving units (221) is two, and the number of the plurality of MOS transistors (222) is two.
14. The method according to claim 8, wherein the number of dimmers (20) is multiple, and the dimming control unit (21) of the multiple dimmers (20) can synchronously control the corresponding switching unit (24) and dimming execution unit (22) to be turned on based on the turn-on control signal and the turn-on indication signal, so that the voltage on the live wire (200) is delivered to the load (100).