Lamp control circuit and lamp

Abstract

The lamp control circuit and the lamp provided in the embodiments of the present disclosure comprise a master control unit, which comprises a power supply terminal, a first wireless receiving terminal, a first wireless sending terminal, a bus receiving terminal and a bus sending terminal; the power supply terminal is connected to a power supply; the first wireless receiving terminal and the first wireless sending terminal are connected to a wireless communication circuit, the wireless communication circuit is wirelessly coupled to a remote control device to form a first communication path for external control of the lamp; the bus receiving terminal and the bus sending terminal are connected to a bus communication circuit, the bus communication circuit is coupled to a communication bus to form a second communication path for external control of the lamp; by forming the first communication path coupled to the remote control device and the second communication path coupled to the communication bus, both wireless and bus control modes can be compatible, and different scene requirements can be adapted.

Description

Technical Field

[0001] This disclosure relates to the field of lighting technology, and more particularly to lighting control circuits and lighting fixtures. Background Technology

[0002] With the development of smart lighting technology, lighting control is mainly divided into two categories: wireless control and wired bus control. Wireless control (such as infrared, Bluetooth, etc.) is convenient to install and flexible to adjust, but it has weak anti-interference and limited distance, making it suitable for small scenarios such as homes. Wired bus control (such as RS485, KNX, etc.) has stable communication, strong anti-interference, and supports large-scale networking, making it suitable for large commercial or industrial scenarios. However, it has problems such as high installation costs and the need for rewiring for later adjustments. Moreover, most existing control circuits only support a single communication method, making it difficult for different scenario systems to be compatible, increasing integration difficulty and cost, and limiting system scalability. Summary of the Invention

[0003] In view of the shortcomings of the prior art described above, the purpose of this disclosure is to provide a lighting control circuit and a lighting fixture to solve the problems in the related art.

[0004] The first aspect of this disclosure provides a lighting control circuit, comprising:

[0005] The main control unit includes a power supply terminal, a first wireless receiving terminal, a first wireless transmitting terminal, a bus receiving terminal, and a bus transmitting terminal;

[0006] The power supply terminal is connected to a power supply.

[0007] The first wireless receiving terminal and the first wireless transmitting terminal are for connecting to a wireless communication circuit, and the wireless communication circuit is for wirelessly coupling with a remote control device to form a first communication path for external control of the lighting fixture.

[0008] The bus receiving terminal and the bus transmitting terminal are for connecting to the bus communication circuit, and the bus communication circuit is for coupling with the communication bus to form a second communication path for external control of the lighting fixture.

[0009] In an embodiment of the first aspect, the wireless communication circuit includes a wireless receiving circuit and a wireless transmitting circuit;

[0010] The wireless receiving circuit is coupled between the first wireless receiving terminal and the second wireless receiving terminal;

[0011] The wireless transmission circuit is coupled between the first wireless transmission terminal and the second wireless transmission terminal;

[0012] The second wireless transmitting terminal and the second wireless receiving terminal are wirelessly coupled to the remote control device through a wireless transceiver module.

[0013] The second wireless receiving terminal and the second wireless transmitting terminal are integrated into a first output port.

[0014] In a first aspect embodiment, the wireless receiving circuit includes:

[0015] The first switching unit includes a first terminal, a second terminal, and a first control terminal for controlling the first terminal and the second terminal to be on / off.

[0016] The first end is coupled between the first resistor and the first wireless receiving terminal; the other end of the first resistor is coupled to the power supply.

[0017] The second terminal is grounded; the first control terminal is coupled to the second wireless receiving terminal via a second resistor;

[0018] A third resistor, one end of which is coupled to the first wireless receiving terminal, and the other end of the first resistor is grounded; and / or

[0019] The wireless transmitting circuit includes:

[0020] The second switching unit includes a third terminal, a fourth terminal, and a second control terminal for controlling the third terminal and the fourth terminal to be on / off; the third terminal is coupled to the second wireless transmitting terminal; the fourth terminal is grounded; and the second control terminal is coupled to the first wireless transmitting terminal via a fourth resistor.

[0021] In the first aspect of the embodiment, the bus communication circuit includes a bus receiving circuit and a bus transmitting circuit;

[0022] The bus receiving circuit is coupled to the bus receiving terminal and the communication bus respectively;

[0023] The bus transmitting circuit is coupled to the bus transmitting terminal and the communication bus, respectively.

[0024] In a first aspect embodiment, the bus receiving circuit includes:

[0025] The third switching unit includes a fifth terminal, a sixth terminal, and a third control terminal for controlling the on / off state of the fifth terminal and the sixth terminal; the fifth terminal is coupled to the output terminal of the power supply and the bus receiving terminal via a fifth resistor; the sixth terminal is grounded; the third control terminal is coupled to the communication bus via a sixth resistor.

[0026] The seventh resistor has one end coupled to the sixth resistor and the other end grounded.

[0027] In a first aspect embodiment, the bus transmitting circuit includes:

[0028] The fourth switching unit includes a seventh terminal, an eighth terminal, and a fourth control terminal for controlling the on / off state of the seventh terminal and the eighth terminal; the seventh terminal is grounded; the eighth terminal is coupled to the communication bus via an eighth resistor; the fourth control terminal is coupled to the bus transmitting terminal via a ninth resistor.

[0029] The tenth resistor has one end coupled to the fourth control terminal and the other end grounded.

[0030] In the first aspect embodiment, the communication bus transmits AC signals, and the bus communication circuit further includes:

[0031] A pair of bus communication positive terminals and a bus communication negative terminal are coupled to the communication bus;

[0032] The rectifier unit includes:

[0033] A pair of AC terminals are respectively coupled to the positive terminal and the negative terminal of the bus communication;

[0034] A DC terminal is coupled to the bus receiving circuit and the bus transmitting circuit. In an embodiment of the first aspect, the bus communication circuit includes:

[0035] A pair of bus communication positive terminals and a bus communication negative terminal are coupled to the communication bus;

[0036] A Zener diode is coupled between the positive terminal and the negative terminal of the bus communication system.

[0037] The rectifier bridge is coupled to the positive terminal and the negative terminal of the bus communication, respectively.

[0038] The DC terminal is coupled to the rectifier bridge.

[0039] The third switching unit includes a fifth terminal, a sixth terminal, and a third control terminal for controlling the on / off state of the fifth terminal and the sixth terminal; the fifth terminal is coupled to the output terminal of the power supply and the bus receiving terminal via a fifth resistor; the sixth terminal is grounded; the third control terminal is coupled to the DC terminal via a sixth resistor.

[0040] A seventh resistor, one end of which is coupled to the sixth resistor, and the other end of which is grounded;

[0041] The fourth switching unit includes a seventh terminal, an eighth terminal, and a fourth control terminal for controlling the on / off state of the seventh terminal and the eighth terminal; the seventh terminal is grounded; the eighth terminal is coupled to the DC terminal via an eighth resistor; and the fourth control terminal is coupled to the bus transmitting terminal via a ninth resistor.

[0042] The tenth resistor has one end coupled to the fourth control terminal and the other end grounded.

[0043] In an embodiment of the first aspect, the main control unit further includes at least one operating status indication terminal, which is coupled to a status display via a status display terminal; wherein the status display terminal is integrated into a first output port.

[0044] The second aspect of this disclosure provides a lighting fixture, which includes the lighting fixture control circuit described in any one of the first aspects above.

[0045] The beneficial effects of this disclosure are: by forming a first communication path coupled to the remote control device and a second communication path coupled to the communication bus, it can be compatible with both wireless and bus control methods to adapt to different scenario requirements; and the dual-path redundancy can improve control reliability and reduce the risk of single communication failure. Attached Figure Description

[0046] Figure 1 An overall block diagram of a lighting control circuit according to one embodiment of the present disclosure is shown.

[0047] Figure 2 A circuit block diagram of the wireless communication circuit in a lighting control circuit according to an embodiment of the present disclosure is shown.

[0048] Figure 3 A circuit diagram of the wireless communication circuit in a lighting control circuit according to an embodiment of the present disclosure is shown.

[0049] Figure 4 A circuit block diagram of the bus communication circuit in a lighting control circuit according to an embodiment of this disclosure is shown.

[0050] Figure 5 A circuit block diagram of the bus communication circuit in the lighting control circuit of another embodiment of this disclosure is shown.

[0051] Figure 6 A circuit diagram of the bus communication circuit in a lighting control circuit is shown in yet another embodiment of this disclosure. Detailed Implementation

[0052] The following specific examples illustrate the implementation of this disclosure. Those skilled in the art can easily understand other advantages and effects of this disclosure from the information disclosed herein. This disclosure can also be implemented or applied through other different specific embodiments, and various details in this disclosure can be modified or changed according to different viewpoints and application modules without departing from the spirit of this disclosure. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this disclosure can be combined with each other.

[0053] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings, so that those skilled in the art to which this disclosure pertains can readily implement it. This disclosure may be embodied in many different forms and is not limited to the embodiments described herein.

[0054] In this disclosure, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic represented in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. Furthermore, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in any one or a group of embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples represented in this disclosure, as well as the features of those different embodiments or examples.

[0055] Furthermore, the terms "first" and "second" are used for illustrative purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the representation of this disclosure, "a set" means two or more, unless otherwise explicitly specified.

[0056] For the purpose of clarity, devices unrelated to the description are omitted, and the same or similar components throughout the specification are given the same reference numerals.

[0057] Throughout this specification, when it is said that a device is "connected" to another device, this includes not only "direct connection" but also "indirect connection" by placing other components in between. Furthermore, when it is said that a device "comprises" a certain constituent element, unless otherwise stated otherwise, this does not exclude other constituent elements, but rather implies that other constituent elements may be included.

[0058] While the terms first, second, etc., are used in some examples herein to refer to various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, first interface and second interface, etc., are used. Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of features, steps, operations, elements, modules, items, kinds, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, modules, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition will only occur if the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0059] The technical terms used herein are for reference only to specific embodiments and are not intended to limit the scope of this disclosure. The singular form used herein includes the plural form unless the statement explicitly indicates otherwise. The word "comprising" as used in this specification means to specify a particular characteristic, region, integer, step, operation, element, and / or component, and does not exclude the presence or addition of other characteristics, regions, integers, steps, operations, elements, and / or components.

[0060] Although not explicitly defined, all terms, including technical and scientific terms used herein, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. Terms defined in commonly used dictionaries shall be further interpreted as having a meaning consistent with the relevant technical literature and the message of the present disclosure, and shall not be over-interpreted as having an ideal or overly formulaic meaning unless otherwise defined.

[0061] In related reception, lighting control circuits are mostly designed with a single communication path, typically relying on only one method to achieve external control of the lighting fixture. For example, some circuits connect the control components and the lighting fixture via simple wired wiring, or are equipped with only a wireless receiver module used in conjunction with a single remote control device. These types of circuits have significant drawbacks: purely wired control circuits have complex wiring, and subsequent adjustments or expansions of the control range require rewiring, resulting in poor flexibility and high costs; purely wireless control circuits are susceptible to environmental factors such as electromagnetic interference and wall obstructions, leading to unstable control signals, frequent command delays and loss, and unreliability.

[0062] To address the aforementioned issues, one embodiment of this disclosure provides a lighting control circuit. In addition to forming a first communication path for wireless remote control, the main control unit is equipped with a bus receiving terminal and a bus transmitting terminal for connecting to a bus communication circuit to couple with the communication bus, thereby constructing a second communication path for controlling the lighting fixture via the communication bus.

[0063] The coexistence of bus and wireless communication offers several advantages. Firstly, wireless communication eliminates the need for wiring, offering flexibility and convenience suitable for users' short-range, real-time control needs, such as quickly adjusting light switches and brightness with a remote control in the home. Secondly, bus communication provides stable communication, ideal for centralized control of large areas and multiple light fixtures, such as lighting management in shopping malls and office buildings. Furthermore, when one path fails due to a malfunction (e.g., wireless signal interruption or bus line damage), the other path can continue to provide control, significantly improving the reliability and applicability of the lighting control circuit.

[0064] Specifically, in Figure 1 In this embodiment, the main control unit 101 includes a power supply terminal 1011, a first wireless receiving terminal 1012, a first wireless transmitting terminal 1013, a bus receiving terminal 1014, and a bus transmitting terminal 1015.

[0065] As an example, the main control unit 101 may include a microprocessor, and the power supply pin of the microprocessor is the power supply terminal 1011, which can be directly connected to a power supply, such as a DC 5V or 3.3V power supply, to provide working voltage for the microprocessor and the entire control circuit and ensure its stable operation.

[0066] The general-purpose input / output pins of the microprocessor can be used as the first wireless receiving terminal 1012 and the first wireless transmitting terminal 1013. After being connected to the receiving and transmitting pins of the wireless communication circuit 102 through matching circuits such as external resistors and capacitors, a wireless connection is established with the remote control device 200 through the wireless module, forming the first communication path.

[0067] Other general-purpose input / output pins of the microprocessor can be configured as bus receive terminal 1014 and bus transmit terminal 1015, which are connected to the bus communication circuit 103 according to the bus protocol. By coupling with the communication bus, the microprocessor can interact with the bus network, forming a second communication path.

[0068] In some embodiments, Figure 1 In this embodiment, the power supply terminal 1011 is connected to a power supply.

[0069] The power supply is a DC power supply, such as 3.3V or 5V, which meets the voltage requirements of the main control unit 101 and subsequent circuits. This connection provides a stable power supply for the entire lamp 100 control circuit.

[0070] Optionally, in Figure 1 In this embodiment, the first wireless receiving terminal 1012 and the first wireless transmitting terminal 1013 are connected to the wireless communication circuit 102, which is wirelessly coupled to the remote control device 200 to form a first communication path for external control of the lamp 100.

[0071] Please refer to this as well. Figure 1 , Figure 2 as well as Figure 3 In this embodiment, the wireless communication circuit 102 is wirelessly connected to the remote control device 200 via a wireless transceiver module 104 through a first output port 1023. The first output port 1023 includes a second wireless transmitting terminal 10231 and a second wireless receiving terminal 10232, which are wirelessly coupled to the remote control device 200 through the wireless transceiver module 104.

[0072] Specifically, the wireless transceiver module 104 uses the same communication protocol as the communication module of the remote control device 200, such as Bluetooth, ZigBee, infrared, or Wi-Fi. For example, when a user operates the remote control device 200, such as pressing the "turn on light" or "brighten" button, the microcontroller inside the remote control device 200 will convert the operation into digital instructions. These digital instructions include the target light fixture 100 identifier and specific operation instructions, such as on / off status or brightness value; for example, the binary code "1001" represents turning on the light.

[0073] The wireless transmission module of the remote control device 200 includes an infrared transmitter, a Bluetooth chip, and a ZigBee radio frequency module. The digital signal is encoded according to a preset protocol, then converted into a carrier signal suitable for wireless transmission via a modulation circuit, and finally transmitted into space as electromagnetic waves via an antenna or infrared transmitter.

[0074] The wireless communication circuit 102 at the lamp 100 is connected to the first wireless receiving terminal 1012 of the main control unit 101. It captures wireless signals in space through a receiving antenna or infrared receiver, processes them, restores the carrier signal to the original digital command, and finally transmits it to the main control unit 101 of the lamp 100. The main control unit 101 parses the target identifier and operation content in the command, such as turning the light on or off.

[0075] Alternatively, please refer to Figure 2 In this embodiment, the wireless communication circuit 102 includes a wireless receiving circuit 1021 and a wireless transmitting circuit 1022.

[0076] The wireless receiving circuit 1021 is coupled between the first wireless receiving terminal 1012 and the second wireless receiving terminal 10232.

[0077] Optionally, in Figure 3In this embodiment, the wireless receiving circuit 1021 includes: a first switching unit Q1, a first resistor R1, a second resistor R2, and a third resistor R3.

[0078] The first switching unit Q1 includes a first terminal 1, a second terminal 2, and a first control terminal K1 for controlling the first terminal 1 and the second terminal 2 to be on / off;

[0079] The first control terminal K1 is coupled to the second wireless receiving terminal 10232 via the second resistor R2;

[0080] One end of the third resistor R3 is coupled to the first wireless receiving terminal 1012, and the other end of the first resistor R1 is grounded.

[0081] Specifically, when the remote control device 200 sends a control command, the command is converted into an electrical signal by the wireless transceiver module 104, output through the second wireless receiving terminal 10232, and then transmitted to the first control terminal K1 of the first switching unit Q1 through the second resistor R2.

[0082] exist Figure 3 In this embodiment, the first switching unit Q1 is controlled by an NPN transistor. When the signal received by the first control terminal K1 is high, the first terminal 1 and the second terminal 2 of the first switching unit Q1 are connected, which is equivalent to the switch being closed.

[0083] The first terminal 1 is coupled between the first resistor R1 and the first wireless receiving terminal 1012; since the second terminal 2 is grounded, when the first terminal 1 and the second terminal 2 are connected, the first terminal 1 is directly pulled to ground potential, and at this time the level of the first wireless receiving terminal 1012 is low, close to 0V.

[0084] If the signal received by the first control terminal K1 is low, then the first terminal 1 and the second terminal 2 of the first switching unit Q1 are disconnected, which is equivalent to the switch being open. At this time, the voltage of the first wireless receiving terminal 1012, i.e., the first terminal 1, is not pulled low, and the first wireless receiving terminal 1012 will receive a voltage close to the power supply voltage, i.e., a high level.

[0085] The main control unit 101 can parse the control commands sent by the remote control device 200 according to the high and low changes of the level in a time sequence (such as a combination of high and low levels).

[0086] Optionally, when the first switching unit Q1 is in the ON state, i.e., the first terminal 1 and the second terminal 2 are connected, and the first terminal 1 is grounded through the second terminal 2, the first resistor R1 is connected in series between the power supply and ground. At this time, the first resistor R1 will limit the current in the circuit, preventing the power supply from being directly short-circuited to ground through the ON switching unit, and preventing excessive current from burning out the first switching unit Q1 or the power supply.

[0087] Optionally, in Figure 3 In this embodiment, the wireless receiving circuit 1021 further includes a first capacitor C1 and an eleventh resistor R11.

[0088] The first capacitor C1 and the eleventh resistor R11 form a first RC filter circuit, which is connected in parallel between the first control terminal K1 and the second terminal 2.

[0089] Specifically, the first RC filter circuit is used to filter out interference signals in the wireless signals received by the first control terminal K1.

[0090] exist Figure 2 In this embodiment, the wireless transmission circuit 1022 is coupled between the first wireless transmission terminal 1013 and the second wireless transmission terminal 10231.

[0091] Optionally, in Figure 3 In this embodiment, the wireless transmitting circuit 1022 includes a second switching unit Q2 and a fourth resistor R4.

[0092] The second switching unit Q2 includes a third terminal 3, a fourth terminal 4, and a second control terminal K2 for controlling the third terminal 3 and the fourth terminal 4 to be on / off; the second control terminal K2 is coupled to the first wireless transmitting terminal 1013 via a fourth resistor R4.

[0093] Specifically, when the main control unit 101 needs to send a signal to the remote control device 200, such as lamp status information, it will output a corresponding level signal, such as high level or low level, through the first wireless transmission terminal 1013. Depending on the type of the switching unit, if the second switching unit Q2 is an NPN transistor or an N-channel MOSFET, then the output level is high level when sending the signal.

[0094] exist Figure 3 In this embodiment, the second switching unit Q2 is implemented as an NPN transistor. When transmitting a signal, the main control unit 101 transmits a high-level signal through the first wireless transmitting terminal 1013, and the third terminal 3 and the fourth terminal 4 of the second switching unit Q2 are turned on, i.e., the switch is closed. The third terminal 3 is coupled to the second wireless transmitting terminal 10231; the fourth terminal 4 is grounded; the third terminal 3 is pulled to ground potential through the turned-on second switching unit Q2, at which time the second wireless transmitting terminal 10231 outputs a low level, which corresponds to a specific digital signal, such as "0", after the wireless transceiver module 104 detects the low level, so as to encode the digital signal and convert it into a wireless signal for transmission.

[0095] When the second switch unit Q2 is turned off: the second wireless transmitting terminal 10231 is no longer grounded through the switch unit, but instead outputs a high level. After the wireless transceiver module 104 detects the high level, it corresponds to another digital signal such as "1", and performs digital signal encoding, which can be converted into a wireless signal for transmission.

[0096] The fourth resistor R4 is connected in series between the first wireless transmitting terminal 1013 and the second control terminal K2 for current limiting protection.

[0097] Optionally, in Figure 3 In this embodiment, the wireless transmitting circuit 1022 further includes a second capacitor C2 and a twelfth resistor R12.

[0098] The second capacitor C2 and the twelfth resistor R12 form the second RC filter circuit, which is connected in parallel between the second control terminal K2 and the fourth terminal 4.

[0099] Similar to the first RC filter circuit, it will not be described in detail here.

[0100] Optionally, in Figure 3 In this embodiment, the main control unit 101 further includes at least one working status indication terminal, which is coupled to a status display via a status display terminal 10234.

[0101] The operating status display terminal 10234 is coupled to the status display terminal 10234 via a thirteenth resistor R13.

[0102] The operating status indicator terminal is used to output status indicator signals for the lamp 100, such as lamp 100 on / off, wireless communication normal / interrupted, bus connection status, etc. The thirteenth resistor R13 is used for current limiting protection to prevent the status display connected to the status display terminal 10234, such as LED indicator lights or small digital tubes, from being burned out due to excessive current, and to stabilize the level of the status indicator signal. In some embodiments, the status display terminal 10234 is integrated into the first output port 1023, sharing the same physical port with the second wireless receiving terminal 10232 and the second wireless transmitting terminal 10231, which greatly reduces the number of external interfaces of the circuit, simplifies the wiring process, and makes the installation of the status display more convenient.

[0103] Optionally, in some embodiments, the main control unit 101 may also be provided with a pair of working status indicator terminals, and the corresponding first output port 1023 is respectively provided with a status display terminal 10234 for displaying the working status of the lamp 100.

[0104] The two status display terminals 10234 can be connected to different status displays, such as a red LED indicating power supply and a green LED indicating communication. Through independent terminal and display configurations, users or maintenance personnel can intuitively distinguish the different working states of the lamp 100, avoiding information confusion caused by a single display, and facilitating later troubleshooting, such as quickly determining whether the problem is a power supply issue or a communication issue.

[0105] Optionally, in Figure 3 In this embodiment, the first output port 1023 is also provided with a lamp connection port (LED+ / LED-) to connect to the lamp 100 and to control the lamp 100.

[0106] Specifically, the main control unit 101 parses the control commands transmitted through the wireless communication path or the bus communication path, such as switching, dimming, and color temperature adjustment, and generates corresponding control signals, such as high and low level signals, which are output to the lamp 100 through the lamp connection port (LED+ / LED-) to drive the lamp 100 to perform the corresponding operation.

[0107] exist Figure 1 In this embodiment, the bus receiving terminal 1014 and the bus transmitting terminal 1015 are connected to the bus communication circuit 103, and the bus communication circuit 103 is coupled to the communication bus to form a second communication path for external control of the lamp 100.

[0108] Specifically, the bus receiving terminal 1014 is used to transmit the external control signal processed by the bus communication circuit 103 to the main control unit 101, and the bus transmitting terminal 1015 is used to transmit the status feedback signal generated by the main control unit 101 to the bus communication circuit 103.

[0109] Optionally, the bus communication circuit 103 includes a bus receiving circuit 1031 and a bus transmitting circuit 1032;

[0110] The bus receiving circuit 1031 is coupled to the bus receiving terminal 1014 and the communication bus, respectively.

[0111] As an example, when the communication bus is in AC input mode, optionally, the communication bus transmits AC signals. Figure 5 as well as Figure 6 In this embodiment, the bus communication circuit 103 further includes: a pair of bus communication positive terminals 1033 and bus communication negative terminals 1034, and a rectifier unit 105.

[0112] The pair of bus communication positive terminals 1033 and bus communication negative terminals 1034 are coupled to the communication bus.

[0113] The rectifier unit 105 includes: a pair of fifth resistors R5 and a DC terminal 1052.

[0114] The pair of fifth resistors R5 are respectively coupled to the positive terminal 1033 and the negative terminal 1034 of the bus communication;

[0115] The DC terminal 1052 is coupled to the bus receiving circuit 1031 and the bus transmitting circuit 1032.

[0116] Specifically, when the communication bus is in AC input mode, a rectifier unit 105 must be provided. The bus communication circuit 103 relies on a DC power supply to operate stably. The essence of AC signals is that the voltage / current direction reverses periodically with time. If AC signals are directly connected to the bus communication circuit 103, the components in the bus communication circuit 103 will be unable to establish a stable operating state due to the "repeated switching of power supply direction." For example, the switching unit cannot continuously maintain its on / off logic. The rectifier unit 105, in some embodiments, is set as a rectifier bridge 1053, which can convert the alternating AC power into unidirectional pulsating DC power and feed it back to the bus receiving circuit 1031 and the bus receiving and transmitting circuit through the DC terminal 1052.

[0117] Please refer to Figure 6 In a specific embodiment, the bus communication circuit 103 includes: a pair of bus communication positive terminals 1033, a bus communication negative terminal 1034, a Zener diode DW1, a DC terminal 1052, a rectifier bridge 1053, a third switching unit Q3, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a fourth switching unit Q4, an eighth resistor R8, a ninth resistor R9, and a tenth resistor 10.

[0118] The pair of bus communication positive terminals 1033 and bus communication negative terminals 1034 are coupled to the communication bus;

[0119] The Zener diode DW1 is coupled between the positive terminal 1033 and the negative terminal 1034 of the bus communication;

[0120] The rectifier bridge 1053 is coupled to the positive terminal 1033 and the negative terminal 1034 of the bus communication respectively;

[0121] The DC terminal 1052 is coupled to the rectifier bridge 1053;

[0122] The third switching unit Q3 includes a fifth terminal 5, a sixth terminal 6, and a third control terminal K3 for controlling the on / off state of the fifth terminal 5 and the sixth terminal 6; the fifth terminal 5 is coupled to the output terminal of the power supply and the bus receiving terminal 1014 via a fifth resistor R5; the sixth terminal 6 is grounded; the third control terminal K3 is coupled to the DC terminal 1052 via a sixth resistor R6.

[0123] One end of the seventh resistor R7 is coupled to the sixth resistor R6, and the other end of the seventh resistor R7 is grounded;

[0124] The fourth switching unit Q4 includes a seventh terminal 7, an eighth terminal 8, and a fourth control terminal K4 for controlling the on / off state of the seventh terminal 7 and the eighth terminal 8; the seventh terminal 7 is grounded; the eighth terminal 8 is coupled to the DC terminal 1052 via an eighth resistor R8; and the fourth control terminal K4 is coupled to the bus transmitting terminal 1015 via a ninth resistor 9.

[0125] One end of the tenth resistor 10 is coupled to the fourth control terminal K4, and the other end of the tenth resistor 10 is grounded.

[0126] Specifically, the Zener diode DW1 is connected in parallel between the two bus terminals for overvoltage protection. When the bus line experiences a momentary high voltage due to interference or fault, the Zener diode DW1 breaks down and conducts, clamping the voltage within a safe threshold to prevent high voltage from damaging the subsequent rectifier bridge 1053 and circuit components.

[0127] The rectifier bridge 1053 is a bridge rectifier structure composed of four diodes, which are connected to two bus terminals respectively. It converts the input AC power into unidirectional pulsating DC power and outputs a reference point 151 through the DC terminal 1052.

[0128] The third control terminal K3 of the third switching unit Q3 is connected to the DC terminal 1052 through the sixth resistor R6, and simultaneously grounded through the seventh resistor R7, forming a voltage divider circuit. When the voltage at the reference point 151 reaches the conduction threshold after voltage division, the fifth terminal 5 and the sixth terminal 6 of the third switching unit Q3 are connected. At this time, the fifth terminal 5 is grounded through the sixth terminal 6, and the bus receiving terminal 1014 is pulled low. If the voltage at the third control terminal K3 does not reach the threshold, the switch is open, the fifth terminal 5 is connected to the power supply through the fifth resistor R5, and is therefore pulled high, and the bus receiving terminal 1014 outputs a high level. The main control unit 101 identifies the high and low level timing of the bus receiving terminal 1014 to parse the bus control commands.

[0129] When the luminaire 100 needs to report its status, such as operating mode or fault information, to the bus, the main control unit 101 outputs a control signal through the bus transmitting terminal 1015 to drive the fourth switch unit Q4 to close. When the bus transmitting terminal 1015 outputs a high level, the voltage of the fourth control terminal K4 reaches the conduction threshold, and the eighth terminal 8 and the seventh terminal 7 of the fourth switch unit Q4 conduct, shunting the current at the reference point 151, causing the voltage at the DC terminal 1052 to drop significantly from its rectified stable value. When the bus transmitting terminal 1015 outputs a low level, the fourth switch unit Q4 opens, and the voltage at the reference point 151 returns to stability. This voltage fluctuation is reverse-coupled to the AC communication bus via the rectifier bridge 1053.

[0130] When the communication bus is an AC input, the Zener diode DW1 can be a bidirectional Zener diode.

[0131] refer to Figure 6 In this embodiment, the bus communication circuit 103 further includes a third capacitor C3, a fourth capacitor C4, and a fifth capacitor C5. The third capacitor C3 and the fourth capacitor C4 are connected in parallel between the rectifier bridge 1053 and ground. The fifth capacitor C5 and the seventh resistor R7 form a third RC filter circuit, coupled between the third control terminal K3 and ground.

[0132] Specifically, when the rectified output voltage increases, the capacitor charges and stores electrical energy; when the voltage decreases, the capacitor discharges to replenish energy, making the voltage output by the DC terminal 1052 closer to stable DC.

[0133] As an example, when the communication bus is in DC input mode, its bus communication circuit 103 does not need to be equipped with a rectifier unit 105. It directly realizes signal transmission based on the DC power output from the communication bus, and completes instruction reception and status feedback through the switching of the third switch unit Q3 and the fourth switch unit Q4.

[0134] The fifth terminal 5 of the third switching unit Q3 is connected to the power supply and the bus receiving terminal 1014 via the fifth resistor R5, and the sixth terminal 6 is grounded. The third control terminal K3 is connected to the DC bus line via the sixth resistor R6, and simultaneously grounded via the seventh resistor R7, forming a voltage divider circuit. The control signals on the DC bus are directly superimposed on the DC power supply in the form of "high level" or "low level", such as high level representing "1" and low level representing "0". After voltage division by the sixth resistor R6 and the seventh resistor R7, if the voltage of the third control terminal K3 reaches the conduction threshold, the third switching unit Q3 is turned on, and the bus receiving terminal 1014 is pulled to a low level; if the threshold is not reached, the switch is turned off, and the bus receiving terminal 1014 is pulled high by the power supply via the fifth resistor R5. The main control unit 101 parses the external control commands by recognizing the high and low level timing of the bus receiving terminal 1014.

[0135] The seventh terminal 7 of the fourth switching unit Q4 is grounded, and the eighth terminal 8 is connected to the DC bus line via the eighth resistor R8. The fourth control terminal K4 is connected to the bus transmitting terminal 1015 via the ninth resistor, and is also grounded via the tenth resistor 10 for current limiting and level stabilization. When the lamp 100 needs feedback, the main control unit 101 outputs a signal through the bus transmitting terminal 1015: when the bus transmitting terminal 1015 outputs a high level, the voltage of the fourth control terminal K4 reaches a threshold, the fourth switching unit Q4 is turned on, and the eighth terminal 8 is grounded, causing voltage fluctuations on the bus line to generate a corresponding feedback signal; when the output is low, the switch is turned off, and the bus voltage returns to stability. The level fluctuations are directly transmitted to the DC bus line as feedback signals.

[0136] In another embodiment of this disclosure, a lamp 100 is provided, which includes the lamp 100 control circuit described in any one of the first aspects above.

[0137] Specifically, the lamp 100 integrates both a bus communication circuit 103 and a wireless communication circuit 102, supporting both bus connection and wireless control. It feeds back to the external bus system through the bus communication circuit 103 and synchronizes with mobile devices or associated wireless devices through the wireless module.

[0138] The above embodiments are merely illustrative of the principles and effects of this disclosure and are not intended to limit this disclosure. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this disclosure. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this disclosure should still be covered by the protection scope of this disclosure.

Claims

1. A lighting control circuit, characterized in that, include: The main control unit includes a power supply terminal, a first wireless receiving terminal, a first wireless transmitting terminal, a bus receiving terminal, and a bus transmitting terminal; The power supply terminal is connected to a power supply. The first wireless receiving terminal and the first wireless transmitting terminal are for connecting to a wireless communication circuit, and the wireless communication circuit is for wirelessly coupling with a remote control device to form a first communication path for external control of the lighting fixture. The bus receiving terminal and the bus transmitting terminal are for connecting to the bus communication circuit, and the bus communication circuit is for coupling with the communication bus to form a second communication path for external control of the lighting fixture.

2. The lighting control circuit according to claim 1, characterized in that, The wireless communication circuit includes a wireless receiving circuit and a wireless transmitting circuit. The wireless receiving circuit is coupled between the first wireless receiving terminal and the second wireless receiving terminal; The wireless transmission circuit is coupled between the first wireless transmission terminal and the second wireless transmission terminal; The second wireless transmitting terminal and the second wireless receiving terminal are wirelessly coupled to the remote control device through a wireless transceiver module. The second wireless receiving terminal and the second wireless transmitting terminal are integrated into a first output port.

3. The lighting control circuit according to claim 2, characterized in that, The wireless receiving circuit includes: The first switching unit includes a first terminal, a second terminal, and a first control terminal for controlling the first terminal and the second terminal to be on / off. The first end is coupled between the first resistor and the first wireless receiving terminal; the other end of the first resistor is coupled to the power supply. The second terminal is grounded; the first control terminal is coupled to the second wireless receiving terminal via a second resistor; A third resistor, one end of which is coupled to the first wireless receiving terminal, and the other end of the first resistor is grounded; and / or The wireless transmitting circuit includes: The second switching unit includes a third terminal, a fourth terminal, and a second control terminal for controlling the third terminal and the fourth terminal to be on / off; the third terminal is coupled to the second wireless transmitting terminal; the fourth terminal is grounded; and the second control terminal is coupled to the first wireless transmitting terminal via a fourth resistor.

4. The lighting control circuit according to claim 1, characterized in that, The bus communication circuit includes a bus receiving circuit and a bus transmitting circuit; The bus receiving circuit is coupled to the bus receiving terminal and the communication bus respectively; The bus transmitting circuit is coupled to the bus transmitting terminal and the communication bus, respectively.

5. The lighting control circuit according to claim 4, characterized in that, The bus receiving circuit includes: The third switching unit includes a fifth terminal, a sixth terminal, and a third control terminal for controlling the on / off state of the fifth terminal and the sixth terminal; the fifth terminal is coupled to the output terminal of the power supply and the bus receiving terminal via a fifth resistor; the sixth terminal is grounded; the third control terminal is coupled to the communication bus via a sixth resistor. The seventh resistor has one end coupled to the sixth resistor and the other end grounded.

6. The lighting control circuit according to claim 4, characterized in that, The bus transmitting circuit includes: The fourth switching unit includes a seventh terminal, an eighth terminal, and a fourth control terminal for controlling the on / off state of the seventh terminal and the eighth terminal; the seventh terminal is grounded; the eighth terminal is coupled to the communication bus via an eighth resistor; the fourth control terminal is coupled to the bus transmitting terminal via a ninth resistor. The tenth resistor has one end coupled to the fourth control terminal and the other end grounded.

7. The lighting control circuit according to claim 4, characterized in that, The communication bus transmits AC signals, and the bus communication circuit further includes: A pair of bus communication positive terminals and a bus communication negative terminal are coupled to the communication bus; The rectifier unit includes: A pair of AC terminals are respectively coupled to the positive terminal and the negative terminal of the bus communication; A DC terminal is coupled to the bus receiving circuit and the bus transmitting circuit.

8. The lighting control circuit according to claim 1, characterized in that, The bus communication circuit includes: A pair of bus communication positive terminals and a bus communication negative terminal are coupled to the communication bus; A Zener diode is coupled between the positive terminal and the negative terminal of the bus communication system. The rectifier bridge is coupled to the positive terminal and the negative terminal of the bus communication, respectively. The DC terminal is coupled to the rectifier bridge. The third switching unit includes a fifth terminal, a sixth terminal, and a third control terminal for controlling the on / off state of the fifth terminal and the sixth terminal; the fifth terminal is coupled to the output terminal of the power supply and the bus receiving terminal via a fifth resistor; the sixth terminal is grounded; the third control terminal is coupled to the DC terminal via a sixth resistor. A seventh resistor, one end of which is coupled to the sixth resistor, and the other end of which is grounded; The fourth switching unit includes a seventh terminal, an eighth terminal, and a fourth control terminal for controlling the on / off state of the seventh terminal and the eighth terminal; the seventh terminal is grounded; the eighth terminal is coupled to the DC terminal via an eighth resistor; and the fourth control terminal is coupled to the bus transmitting terminal via a ninth resistor. The tenth resistor has one end coupled to the fourth control terminal and the other end grounded.

9. The lighting control circuit according to claim 1, characterized in that, The main control unit further includes at least one working status indication terminal, which is coupled to a status display via a status display terminal; wherein the status display terminal is integrated into a first output port.

10. A lamp, characterized in that, Includes the lighting control circuit as described in any one of claims 1-9.

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