Control system of dimming device and dimming system

Abstract

The invention provides a control system of a dimming device and a dimming system. The control system comprises a central controller, a first relay module and at least one controller corresponding to the first relay module. The central controller communicates with the first relay module through wireless connection, and the first relay module communicates with the at least one controller through wired connection; the central controller sends a control signal of the dimming device to the first relay module through wireless connection, the controller corresponding to the first relay module receives the control signal through wired connection with the first relay module, and the state of the dimming device corresponding to the controller is controlled according to the content of the control signal. The control system is easy to install and deploy, resists external signal interference, and is easy to troubleshoot fault reasons.

Description

Technical Field

[0001] The present application relates to the field of optoelectronic technology, and in particular to a control system and a dimming system for a dimming device that is easy to install and deploy. Background Art

[0002] Smart home systems can be divided into two categories: wired systems and wireless systems. Wired systems transmit control signals through physical lines, while wireless systems communicate through wireless signals.

[0003] In the vertical application field of dimming devices, corresponding control systems are also needed to provide driving control for them. Common dimming devices can change their own optical properties, such as transmittance and / or haze, according to the electric field applied to them, so as to achieve brightness adjustment and / or state switching between transparent state and privacy state. The control system of the dimming device may include a central control for user operation and a controller for controlling each dimming device. The central control can be connected to multiple controllers to realize one central control to control multiple controllers, and each controller can be connected to at least one controlled dimming device to realize its state control.

[0004] The wiring method of the control system of common dimming devices is mostly all-wired connection. For example, the Chinese invention patent application with publication number CN115485158B published on August 13, 2024 discloses a smart window system that uses all-wired connection. The system includes multiple dimming glasses and central control modules, wherein multiple dimming glasses are communicatively connected with multiple central control modules. The dimming glass includes a glass module and a first controller, and the first controller and the central control module communicate with each other using a CAN bus. This all-wired control system solution is limited by the wiring area scenario, especially when the installation location of the central control is far away from the installation location of the dimming device controller. This installation and deployment method is difficult and has certain safety hazards.

[0005] In order to solve the above-mentioned problem of space limitation in deployment and installation, the inventor tried to construct a control system for dimming devices using a fully wireless connection method, where the central control directly sends the control signal to the controller of each dimming device through a wireless link. It was found through actual measurement that this fully wireless control system is seriously subject to interference problems. The specific reasons include that the controller of the dimming device is usually installed inside the window or door frame, which is more susceptible to interference from external environmental signals. This interference causes the controller to fail to perform corresponding control operations based on the user's operation on the central control, and in the process of troubleshooting, it is difficult for the user to determine whether the specific cause of the fault is a fault in the controller itself or interference from the external environment.

[0006] Therefore, it is urgent to propose a dimming device control system solution that is easy to install and deploy, resistant to external signal interference, and easy to troubleshoot the cause of the fault. Summary of the invention

[0007] In order to solve the above problems, the present application provides a control system for a dimming device and a dimming system, which are easy to install and deploy, resistant to external signal interference, and easy to troubleshoot the cause of the fault.

[0008] To achieve the above-mentioned object, the present application provides a control system for a dimming device, comprising: a central control, a first relay module, and at least one controller corresponding to the first relay module;

[0009] The central control communicates with the first relay module via a wireless connection, and the first relay module communicates with at least one controller via a wired connection;

[0010] The central control sends a control signal of the dimming device to the first relay module via a wireless connection. The controller corresponding to the first relay module receives the control signal via a wired connection with the first relay module, and controls the state of the dimming device corresponding to the controller according to the content of the control signal.

[0011] In a preferred embodiment, the wireless connection between the central control and the first relay module includes Bluetooth connection, WIFI connection, Zigbee connection, LoRa connection, NB-I oT connection, and / or mobile communication network connection.

[0012] In a preferred embodiment, the first relay module includes: a wireless signal receiving module and a signal conversion module;

[0013] The wireless signal receiving module is used to receive the control signal sent by the central control via a wireless connection;

[0014] The signal conversion module is used to generate a corresponding control signal transmitted using a wired connection according to the control signal, and send the control signal transmitted using a wired connection to the controller corresponding to the first relay module through the wired connection between the first relay module and the controller.

[0015] In a preferred embodiment, the wireless signal receiving module adopts a transparent transmission working mode, does not process the received control signal, and directly sends it to the signal conversion module.

[0016] In a preferred embodiment, it also includes at least one second relay module and at least one controller corresponding to each second relay module, the at least one second relay module is cascaded with the first relay module via a wired connection, and the second relay module and its corresponding at least one controller communicate via a wired connection.

[0017] In a preferred embodiment, the first relay module that communicates with the central control via wireless connection receives the control signal of the dimming device sent by the first relay module via wireless connection, and sends the control signal to the second relay module via a wired connection with the second relay module.

[0018] In a preferred embodiment, when there are multiple second relay modules, the second relay modules communicate with each other through a wired connection.

[0019] In a preferred embodiment, the controller corresponding to the second relay module receives the control signal through a wired connection with the second relay module, and controls the state of the dimming device corresponding to the controller according to the content of the control signal.

[0020] In a preferred embodiment, the first relay module and / or at least one of the second relay modules comprises a signal correction module, and the signal correction module is used to correct the waveform of the transmitted control signal to maintain the signal transmission quality.

[0021] In a preferred embodiment, the wired connection between the first relay module and the controller corresponding thereto is a wired connection using differential wired signal transmission.

[0022] In a preferred embodiment, the wired connection between the second relay module and the corresponding controller is a wired connection using differential wired signal transmission.

[0023] In a preferred embodiment, when there are multiple second relay modules, the wired connection between the multiple second relay modules is a wired connection using differential wired signal transmission.

[0024] In a preferred embodiment, the wired connection using differential wired signal transmission is an RS485 bus connection.

[0025] In a preferred embodiment, the control signal carries a control target identifier and a control instruction, and the controller controls the state of the dimming device corresponding to the controller according to the content of the control signal, including:

[0026] The controller reads the control target identifier from the control signal, and executes the control instruction of the control signal after confirming that the control target identifier corresponds to the controller.

[0027] In a preferred embodiment, the controller parses the control instruction in the control signal only after confirming that the control target identifier corresponds to the controller.

[0028] On the other hand, the present application further provides a dimming system, including a dimming device and the control system as described above.

[0029] The beneficial effect of the present application is that, through the wireless connection between the central control and the first relay module, the central control can be more conveniently deployed at a location far away from the first relay module, while the wired connection between the first relay module and the controller of the dimming device can avoid electromagnetic interference in the process of the controller receiving the control signal and reduce the signal transmission delay, which can not only enhance the reliability of the control process, but also facilitate the subsequent troubleshooting of the cause of the fault.

[0030] It is to be understood that both the foregoing general description and the following detailed description of the present application are exemplary and explanatory and are intended to provide further explanation of the application as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are included to provide a further understanding of the present application, are incorporated in and constitute a part of this specification, illustrate embodiments of the present application and together with the description are used to explain the principles of the present application. In the drawings:

[0032] Figure 1 A control system for a dimming device provided by an embodiment of the present invention;

[0033] Figure 2 A control system for a dimming device provided by another embodiment of the present invention;

[0034] Figure 3 A control system for a dimming device provided by another embodiment of the present invention;

[0035] Figure 4 A control system for a dimming device provided by another embodiment of the present invention;

[0036] Figure 5 A control system for a dimming device provided by another embodiment of the present invention;

[0037] Figure 6 A control system for a dimming device provided by another embodiment of the present invention;

[0038] Figure 7 A control system for a dimming device is provided in another embodiment of the present invention. DETAILED DESCRIPTION

[0039] Now, reference will be made in detail to exemplary embodiments of the present application, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numerals will be used throughout the drawings to refer to the same or like parts.

[0040] The shapes, sizes, ratios, angles, and quantities disclosed in the drawings used to describe the embodiments of the present application are examples only, and therefore, the present application is not limited to the details shown in the drawings. Similar reference numerals always represent similar elements. In the following description, when it is determined that a detailed description of related known functions or structures unnecessarily confuses the main points of the present application, the detailed description will be omitted.

[0041] In the case where “including,” “having,” and “comprising” described in the present specification are used, other parts may be added unless “only” is used. Terms in the singular form may include plural forms unless described otherwise.

[0042] When explaining an element, the element is interpreted as including an error range although not explicitly described.

[0043] In the description of the embodiments of the present application, when a structure (e.g., an electrode, a line, a wiring, a layer, or a contact) is described as being formed on the upper portion / lower portion of another structure or on top of / below other structures, this description should be understood to include the case where these structures are in contact with each other, and also includes the case where a third structure is provided therebetween.

[0044] In describing a time relationship, for example, when a time order is described as “after,” “subsequently,” “next,” and “before,” discontinuous cases may be included unless “just” or “immediately” is used.

[0045] It should be understood that although the terms "first", "second", etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of the present application.

[0046] The “X-axis direction”, “Y-axis direction” and “Z-axis direction” should not be interpreted only by a geometric relationship of being merely perpendicular to each other, but may have broader directivities within the range in which the elements of the present application can function.

[0047] The term "at least one" should be understood to include any and all combinations of one or more of the related listed items. For example, the meaning of "at least one of the first, second and third items" represents all combinations of items proposed from the first, second and third items and two or more of the first, second or third items.

[0048] The features of the various embodiments of the present application may be connected or combined with each other in part or in whole, and may interoperate and be driven by technology in various ways, as can be fully understood by those skilled in the art. The embodiments of the present application may be performed independently of each other, or may be performed together in a mutually dependent relationship.

[0049] Hereinafter, exemplary embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0050] Figure 1 A control system of a dimming device provided by an embodiment of the present invention is shown, and the control system includes a central control 101, a first relay module 102, and at least one controller 1031 corresponding to the first relay module. The central control 101 communicates with the first relay module 102 via a wireless connection, and the first relay module 102 communicates with the at least one controller 1031 via a wired connection.

[0051] The dimming device can modulate the intensity, color, phase, polarization and / or direction of the incident light. Therefore, as an example, the dimming device can be a device that can adjust the light transmittance, or a device that can adjust its own haze, or a device that can adjust both the light transmittance and its own haze.

[0052] Types of dimming devices may include electro-variable dimming devices, liquid crystal dimming devices, and / or SPD dimming devices.

[0053] Among them, electrochromic dimming devices and SPD dimming devices can adjust light transmittance, and liquid crystal dimming devices can adjust light transmittance. In addition, there is a liquid crystal dimming device that can adjust both light transmittance and haze, such as a liquid crystal dimming device in the Chinese invention patent application 202111232990.8 filed by the applicant in 2021, which will not be repeated here.

[0054] The central control 101 sends a control signal of the dimming device to the first relay module 102 via a wireless connection. The controller 1031 receives the control signal via a wired connection with the first relay module 102 and controls the state of the dimming device 200 corresponding to the controller 1031 according to the content of the control signal.

[0055] The wireless connection between the central control 101 and the first relay module 102 includes a Bluetooth connection, a WI FI connection, a Zigbee connection, a LoRa connection, a NB-I oT connection, and / or a mobile communication network connection.

[0056] Through the wireless connection between the central control 101 and the first relay module 102, the central control 101 can be more conveniently deployed at a location far away from the first relay module 102, for example, it can be deployed at a location convenient for users to operate, such as a door or window. The wired connection between the first relay module 102 and the controller 1031 of the dimming device can avoid electromagnetic interference in the process of the controller 1031 receiving the control signal, reduce the signal transmission delay, and not only enhance the reliability of the control process, but also facilitate the subsequent troubleshooting of the cause of the fault. This is because after the possibility of electromagnetic interference is basically ruled out, the most likely cause is the failure of the device itself, such as the failure of the controller 1031 or the first relay module 102 itself.

[0057] The specific implementation of the present invention is described in detail below with reference to various examples.

[0058] Figure 2 A schematic diagram of a specific implementation of the control system of the dimming device provided by the present invention is shown. The control system includes a central control 101, a first relay module 1021a and a plurality of controllers 1031 corresponding to the first relay module 1021a.

[0059] The central control 101 is used to receive user operations and generate corresponding control signals. The central control 101 can provide a human-machine interaction device to receive user operations, and the human-machine interaction device can be a button or a touch screen.

[0060] The central control 101 may also automatically generate corresponding control signals according to the operation logic, for example, based on the triggering of a timer signal, or based on a detection signal detected by an external sensor. The detection signal detected by the external sensor may be, for example, a light intensity change signal or a light intensity signal of the external environment.

[0061] The control signal is a signal for prompting the controller 1031 to control the state of the corresponding dimming device. For example, it can be a signal for prompting the controller 1031 to adjust the light transmittance and / or haze of the dimming device.

[0062] The first relay module 1021a includes a wireless signal receiving module 10210 and a signal conversion module 10211. Since the first relay module 1021a and the central control 101 communicate via wireless connection, the wireless signal receiving module 10210 needs to be provided in the first relay module 1021a to receive the control signal sent by the central control 101 via wireless connection. Since the first relay module 1021a and the controller 1031 communicate via wired connection, the signal conversion module 10211 needs to be provided in the first relay module 1021a to convert the control signal received by the wireless signal receiving module 10210 into a control signal that supports the wired connection transmission for transmission.

[0063] exist Figure 2 In the example shown, the central control 101 and the first relay module 1021a can communicate specifically through a Bluetooth communication connection, so the wireless signal receiving module 10210 can be a Bluetooth communication module. The wired connection between the first relay module 1021a and the controller 1031 can be a wired connection of differential wired signal transmission, for example, an RS485 bus connection can be adopted. For this purpose, an RS485 bus 10212 is set in the first relay module 1021a, and an RS485 bus connection interface 10213 is set on the first relay module 1021a. The RS485 bus connection interface 10213 can be set to multiple, and each RS485 bus connection interface 10213 is used to connect to a controller 1031. The signal conversion module 10211 can convert the control signal in the Bluetooth form received by the wireless signal receiving module 10210 into a control signal that supports RS485 bus transmission for transmission, and transmit it to the RS485 bus connection interface 10213, and then be received by the controller 1031. Since a bus connection method is adopted, each RS485 bus connection interface 10213 on the bus 10212 and each controller 1031 connected thereto can receive the control signal.

[0064] exist Figure 2 In the example shown, the first relay module 1021a has four RS485 bus connection interfaces 10213, so the first relay module 1021a supports connecting to a maximum of four controllers 1031. Each controller 1031 can control one or a group of corresponding dimming devices.

[0065] The controller 1031 may be connected to the RS485 bus connection interface 10213 via a wired cable, or the controller 1031 may be designed to have a plug structure that can be directly plugged into the RS485 bus connection interface 10213 .

[0066] The wireless signal receiving module 10210 in the first relay module 1021a can work in a transparent transmission mode. For example, in this example, the wireless signal receiving module 10210 can work in a Bluetooth transparent transmission mode, without processing the received control signal, and directly send it to the signal conversion module 10211.

[0067] As an example, a control signal carries a control target identifier and a control instruction. The target identifier is used to specify a controller that needs to execute the control instruction. In one embodiment, the target identifier can be a destination address. It should be noted that a control signal can include one target identifier, or multiple target identifiers. Therefore, a control instruction in a control signal can be executed by one controller, or by multiple controllers.

[0068] In this example, since each controller 130 is connected to the bus, each controller 130 can receive the control signal transmitted by the first relay module 1021a through the RS485 bus through the first relay module 1021a. After receiving the control signal, the controller 1031 reads the control target identifier carried therein to confirm whether the control target identifier corresponds to itself (i.e., the controller 1031). If it corresponds, the control instruction carried in the control signal is executed, thereby controlling the state of the dimming device corresponding to the controller 1031.

[0069] In order to further reduce the power consumption of the controller 1031, in a preferred implementation, the controller 1031 parses the control instruction carried in the control signal only after confirming that the control target identifier carried in the control signal corresponds to the controller itself.

[0070] In actual installation and deployment, the first relay module 1021 can be arranged outside the dimming device installation location, such as outside the window frame or door frame, and the controller 1031 can be hidden and installed inside the window frame or door frame, etc., so that the strength of the signal received by the first relay module 1021a can be enhanced, and a large number of controllers 1031 can be hidden. Each controller 1031 can control one or a group of dimming devices.

[0071] In practice, considering the problem of signal transmission quality, a signal correction module can be further added to the first relay module, such as Figure 3 A schematic diagram of another embodiment of a control system for a dimming device is shown.

[0072] and Figure 2 The embodiment shown differs in that Figure 3 The first relay module 1021b in the control system further includes a signal correction module 10214. The signal correction module 10214 is used to correct the waveform of the transmitted control signal to maintain the signal transmission quality.

[0073] Specifically in this example, the wireless signal receiving module 10210 sends the received control signal to the signal correction module 10214. The signal correction module 10214 detects the waveform of the control signal, and when it is determined that correction is required, corrects the waveform of the control signal to maintain the signal transmission quality. Of course, it can also be designed that the signal correction module 10214 does not need to detect the waveform of the control signal, and compulsorily corrects the waveform of the control signal to maintain the signal transmission quality.

[0074] The signal correction module 10214 sends the corrected control signal to the signal conversion module 10211, and the signal conversion module 10211 converts the corrected control signal into a control signal supporting the wired connection transmission for transmission.

[0075] In the above example, the signal correction module 10214 is arranged between the wireless signal receiving module 10210 and the signal conversion module 10211. Of course, in an alternative embodiment, the signal correction module 10214 can also be arranged between the signal conversion module 10211 and the bus 10212. In this case, the signal correction module 10214 corrects the waveform of the control signal output by the signal conversion module 10211 for wired connection transmission to maintain the signal transmission quality, for example, Figure 4 In the control system in the embodiment, the signal correction module 10214 of the first relay module 1021c is disposed at the output end of the signal conversion module 10211. Therefore, in any case, the signal correction module 10214 is used to correct the waveform of the transmitted control signal to maintain the signal transmission quality.

[0076] In practice, sometimes the dimming devices that need to be controlled are scattered in multiple locations and are set far away from each other. At this time, based on considerations of signal transmission quality and wiring convenience, it is necessary to increase the number of intermediate modules in the entire control system, realize cascading, and transmit the control signal farther.

[0077] For example, Figure 5 Schematic diagram of a control system of a dimming device shown in the figure, the control system includes a hollow 101, a first relay module 102, a second relay module 104, at least one controller 1031 corresponding to the first relay module 102, and at least one controller 1032 corresponding to the second relay module 104.

[0078] The second relay module 104 is cascaded with the first relay module 102 via a wired connection. The central control 101 communicates with the first relay module 102 via a wireless connection, and the first relay module 102 communicates with at least one controller 1031 corresponding to the first relay module 102 via a wired connection. The second relay module 104 communicates with at least one controller 1032 corresponding to the second relay module 104 via a wired connection.

[0079] The central control 101 sends a control signal of the dimming device to the first relay module 102 through a wireless connection. In addition to sending the control signal to the controller 1031 corresponding to the first relay module 102 through a wired connection, the first relay module 102 also sends the control signal to the second relay module 104 through a wired connection with the second relay module 104. The second relay module 104 that receives the control signal can send the control signal to the controller 1032 through a wired connection with its corresponding controller 1032. Therefore, with the cascade of the first relay module 102 and the second relay module 104, the control signal can be transmitted to a more distant controller.

[0080] Those skilled in the art should be aware that the introduction of the second relay module 104 may be based not only on considerations of signal transmission quality and wiring convenience, but also on the issue of the limited number of controllers that the first relay module 102 can access. For example, when the first relay module 102 provides a limited number of connection interfaces for the controllers, when more controllers need to be expanded to access the relay module to receive control signals, a feasible approach is to introduce a second relay module.

[0081] Figure 6 Shows the implementation Figure 5 A specific scheme schematic diagram of a control system of a dimming device is shown in FIG. The control system includes a central control 101, a first relay module 1021a, a plurality of second relay modules 1041a, at least one controller 1031 corresponding to the first relay module 1021a, and at least one controller 1032 corresponding to each second relay module 104.

[0082] The second relay module 1041a is cascaded with the first relay module 102 via a wired connection. In this embodiment, there are multiple second relay modules 1041a, so there are multiple feasible solutions for specifically implementing the cascade connection with the first relay module 102 via a wired connection.

[0083] The first is that all second relay modules 1041a communicate directly with the first relay module 1021a via wired connection, forming a star-like structure. In this case, the first relay module 1021a sends a control signal to all second relay modules 1041a connected thereto via wired connection.

[0084] The second is that one of the second relay modules 1041a communicates with the first relay module 1021a via a wired connection, and the other second relay modules 1041a are connected in series in sequence, thereby transmitting the control signal from the first relay module 1021a to each second relay module 1041a in sequence. Figure 6 This solution is specifically used as an example to illustrate.

[0085] The third is that part of the second relay modules 1041a communicates directly with the first relay module 1021a via a wired connection, while the other part of the second relay modules 1041a is connected in series with at least one of the second relay modules 1041a that communicate directly with the first relay module 1021a via a wired connection. This solution is a hybrid solution of the first solution and the second solution.

[0086] by Figure 6 Taking the connection method of the multiple second relay modules 1041a shown as an example, this solution is particularly suitable for the situation where the multiple second relay modules 1041a are deployed over a longer distance.

[0087] In this solution, there are multiple second relay modules, and the second relay modules communicate with each other through wired connections.

[0088] Since the first relay module 1021a and the second relay module 1041a are located at different positions in the entire control system, their internal module structures can be designed to be different.

[0089] For example, since the first relay module 1021a needs to receive the control signal sent by the central control 101 through a wireless connection, and needs to convert the control signal into a control signal transmitted through a wired connection. Figure 2 The structure is similar to the first relay module 1021a shown, except that it also includes a wired connection with the second relay module 1041a. The first relay module 1021a includes a wireless signal receiving module 10210 and a signal conversion module 10211. The central control 101 and the first relay module 1021a can communicate specifically through a Bluetooth communication connection, so the wireless signal receiving module 10210 can be a Bluetooth communication module. The wired connection between the first relay module 1021a and the controller 1031 can adopt a wired connection of differential wired signal transmission, for example, an RS485 bus connection can be adopted. For this purpose, an RS485 bus 10212 is set in the first relay module 1021a, and an RS485 bus connection interface 10213 is set on the first relay module 1021a. The RS485 bus connection interface 10213 can be set to multiple, and each RS485 bus connection interface 10213 is used to connect to a controller 1031. The signal conversion module 10211 can convert the control signal in the Bluetooth form received by the wireless signal receiving module 10210 into a control signal supporting RS485 bus transmission for transmission, and transmit it to the RS485 bus connection interface 10213, and then be received by the controller 1031. Due to the bus connection mode, each RS485 bus connection interface 10213 on the bus 10212 and each controller 1031 connected thereto can receive the control signal.

[0090] The first relay module 1021a has four RS485 bus connection interfaces 10213, so the first relay module 1021a supports connecting up to four controllers 1031. Each controller 1031 can control one or a group of corresponding dimming devices. The controller 1031 can be connected to the RS485 bus connection interface 10213 via a wired cable, or the controller 1031 can be designed to have a plug structure that can be directly plugged into the RS485 bus connection interface 10213.

[0091] The second relay module 1041a does not need to establish direct communication with the central control 101, but only needs to receive control signals through cascading with the first relay module 1021a. Therefore, the second relay module 1041a does not need to be equipped with a wireless signal receiving module and a signal conversion module as in the first relay module 1021a mentioned above. It is only necessary to set up a wired connection line inside. For example, in this example, a line using differential wired signal transmission, such as an RS485 bus line, can be set inside the second relay module 1041a. In order to facilitate wired connection with other modules, the second relay module 1041a can be provided with a wired connection interface connected to the corresponding controller 1032, such as a connection interface using differential wired signal transmission, such as an RS485 bus connection interface 10413 in this example. As an embodiment, in Figure 6 In the illustrated solution, each second relay module 1041 a is provided with four RS485 bus connection interfaces 10413 for connecting to the controller 1032 , so that each second relay module 1041 a can be connected to four corresponding controllers 1032 at most.

[0092] In addition, in order to facilitate the wired connection between the first relay module 1021a and the second relay module 1041a directly connected thereto, a wired connection interface for communicating with each other may be respectively provided on the first relay module 1021a and the second relay module 1041a directly connected thereto, for example, a connection interface using differential wired signal transmission may be provided on both, such as an RS485 bus connection interface for communicating with each other. In order to facilitate the wired connection between multiple second relay modules 1041a in a cascaded manner, a wired connection interface for communicating with each other may also be provided on multiple second relay modules 1041a, for example, a connection interface using differential wired signal transmission may be provided on both, such as an RS485 bus connection interface for communicating with each other.

[0093] Thus, through Figure 6In the scheme shown, the control signal sent by the central control 101 is received by the first relay module 1021a and converted into a control signal supporting subsequent wired connection transmission, and then transmitted within the first relay module 1021a and between the subsequent cascaded second relay modules 1041a, so that the controller 1031 connected by wire to the first relay module 1021a and the controller 1032 connected by wire to the second relay modules 1041a can both receive the control signal.

[0094] After receiving the control signal, controller 1031 and controller 1032 read the control target identifier carried therein to confirm whether the control target identifier corresponds to themselves. If it corresponds, they execute the control instructions carried in the control signal to control the state of the dimming device corresponding to controller 1031 or controller 1032.

[0095] It should be clear to those skilled in the art that the above Figure 6 In the example shown in the figure, the number of the second relay modules 1041a is two, and in practice, it can be flexibly selected as needed, for example, set to one, three or more. The number of controllers 1032 connected to each second relay module 1041a can also be selected as needed. In addition, when the number of the second relay modules 1041a is multiple, the number of controllers 1032 connected to at least two second relay modules 1041a can be different. At the same time, the number of controllers 1032 connected to the second relay module 1041a and the number of controllers 1031 connected to the first relay module 1021a can also be different.

[0096] When the second relay module is introduced, especially when the second relay module is multiple and adopts similar Figure 6 When the serial cascade method is shown, special attention should be paid to the problem that the signal transmission quality decreases as the transmission distance increases, which may cause the controller at a farther distance to receive inaccurate control signals and fail to make correct control responses.

[0097] Based on this, a signal correction module is added to the first relay module and / or at least one second relay module to correct the waveform of the transmitted control signal to maintain the signal transmission quality.

[0098] Figure 7 A schematic diagram of an embodiment of a control system for a dimming device is shown in FIG. Figure 6The difference of the control system shown in is that a signal correction module is added to the second relay module with a longer transmission distance. Specifically, the control system includes a central control 101, a first relay module 1021a, a plurality of second relay modules, at least one controller 1031 corresponding to the first relay module 1021a, and at least one controller 1032 corresponding to each second relay module.

[0099] The specific implementation of the central control 101 and the first relay module 1021a is Figure 6 The corresponding modules shown in are the same and will not be repeated here.

[0100] The plurality of second relay modules include at least one second relay module 1041a without a signal correction module and at least one second relay module 1041b with a signal correction module 10414. As a special case, in Figure 7 In the solution shown in , the amount of water in the second relay module 1041a without the signal correction module is one, and the amount of water in the second relay module 1041b with the signal correction module 10414 is one.

[0101] The specific implementation of the second relay module 1041a without the signal correction module is Figure 6 The second relay module 1041a shown in FIG. 1 is the same as the second relay module 1041a shown in FIG. 1 , and will not be described in detail here. In addition to setting up a wired connection line inside the second relay module 1041b with a signal correction module 10414, a signal correction module 10414 is also required to be added to correct the waveform of the control signal transmitted in the wired connection line to maintain the signal transmission quality. The wired connection line here can be, for example, an RS485 bus line. The second relay module 1041b transmits the corrected control signal to the controller 1032 connected thereto and other subsequent second relay modules 1041b cascaded thereto. Therefore, the second relay module 1041b with a signal correction module 10414 can enhance the signal quality of the control signal inside it and in the subsequent transmission process.

[0102] It should be noted that when a signal correction module is provided in the first relay module 1021a, a similar Figure 3 or Figure 4 The solution of setting the signal correction module in the first relay module 1021b or 1021c shown in the figure will not be repeated here.

[0103] In addition, those skilled in the art should be able to understand that the signal correction module can be set in the corresponding first relay module or second relay module at every transmission distance, or can be set in all first relay modules or second relay modules after exceeding a certain transmission distance.

[0104] The present application also provides a dimming system, including the control system of the dimming device and the dimming device.

[0105] The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings; however, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, a variety of simple modifications can be made to the technical solution of the present application, and these simple modifications all fall within the protection scope of the present application.

[0106] In addition, the various implementation modes of the present application may be arbitrarily combined, and as long as they do not violate the concept of the present application, they should also be regarded as the contents disclosed in the present application.

Claims

1. A control system for a dimming device, comprising a central control, a first relay module, and at least one controller corresponding to the first relay module; The central control communicates with the first relay module via a wireless connection, and the first relay module communicates with at least one controller via a wired connection; The central control sends a control signal of the dimming device to the first relay module via a wireless connection. The controller corresponding to the first relay module receives the control signal via a wired connection with the first relay module, and controls the state of the dimming device corresponding to the controller according to the content of the control signal.

2. The control system of the dimming device according to claim 1, characterized in that: The wireless connection between the central control and the first relay module includes Bluetooth connection, WIFI connection, Zigbee connection, LoRa connection, NB-IoT connection, and / or mobile communication network connection.

3. The control system of the dimming device according to claim 1, characterized in that: The first relay module includes: a wireless signal receiving module and a signal conversion module; The wireless signal receiving module is used to receive the control signal sent by the central control via a wireless connection; The signal conversion module is used to generate a corresponding control signal transmitted using a wired connection according to the control signal, and send the control signal transmitted using a wired connection to the controller corresponding to the first relay module through the wired connection between the first relay module and the controller.

4. The control system of the dimming device according to claim 3, characterized in that: The wireless signal receiving module adopts a transparent transmission working mode, does not process the received control signal, and directly sends it to the signal conversion module.

5. The control system of the dimming device according to claim 1, characterized in that: It also includes at least one second relay module and at least one controller corresponding to each second relay module. The at least one second relay module is cascaded with the first relay module via a wired connection, and the second relay module and its corresponding at least one controller communicate via a wired connection.

6. The control system of the dimming device according to claim 5, characterized in that: The first relay module that communicates with the central control via wireless connection receives the control signal of the dimming device sent by the first relay module via wireless connection, and sends the control signal to the second relay module via wired connection with the second relay module.

7. The control system of the dimming device according to claim 6, characterized in that: When there are multiple second relay modules, the second relay modules communicate with each other through a wired connection.

8. The control system of the dimming device according to claim 6, characterized in that: The controller corresponding to the second relay module receives the control signal through a wired connection with the second relay module, and controls the state of the dimming device corresponding to the controller according to the content of the control signal.

9. The control system of the dimming device according to claim 6, characterized in that: The first relay module and / or at least one of the second relay modules comprises a signal correction module, and the signal correction module is used to correct the waveform of the transmitted control signal to maintain the signal transmission quality.

10. The control system of a dimming device according to any one of claims 1 to 9, characterized in that: The wired connection between the first relay module and the controller corresponding thereto is a wired connection using differential wired signal transmission.

11. The control system of a dimming device according to any one of claims 5 to 9, characterized in that: The wired connection between the second relay module and the corresponding controller is a wired connection using differential wired signal transmission.

12. The control system of a dimming device according to any one of claims 5 to 9, characterized in that: When there are multiple second relay modules, the wired connection between the multiple second relay modules is a wired connection using differential wired signal transmission.

13. The control system of a dimming device according to any one of claims 10 to 12, characterized in that: The wired connection using differential wired signal transmission is an RS485 bus connection.

14. The control system of the dimming device according to claim 1, characterized in that: The control signal carries a control target identifier and a control instruction, and the controller controls the state of the dimming device corresponding to the controller according to the content of the control signal, including: The controller reads the control target identifier from the control signal, and executes the control instruction of the control signal after confirming that the control target identifier corresponds to the controller.

15. The control system of the dimming device according to claim 14, characterized in that: The controller parses the control instruction in the control signal only after confirming that the control target identifier corresponds to the controller.

16. A dimming system, characterized in that: The invention comprises a dimming device and a control system as claimed in any one of claims 1 to 15.

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