WO2022110718A1 - 调光开关的设计方法及调光开关 - Google Patents

调光开关的设计方法及调光开关 Download PDF

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Publication number
WO2022110718A1
WO2022110718A1 PCT/CN2021/096627 CN2021096627W WO2022110718A1 WO 2022110718 A1 WO2022110718 A1 WO 2022110718A1 CN 2021096627 W CN2021096627 W CN 2021096627W WO 2022110718 A1 WO2022110718 A1 WO 2022110718A1
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switch
signal
dimming
control
load
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PCT/CN2021/096627
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English (en)
French (fr)
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莫根成
陆伟锋
吴豪明
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广州易而达科技股份有限公司
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Publication of WO2022110718A1 publication Critical patent/WO2022110718A1/zh

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/32—Pulse-control circuits
    • H05B45/325—Pulse-width modulation [PWM]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

Definitions

  • the embodiments of the present application relate to the field of switch technologies, for example, to a design method of a dimmer switch and a dimmer switch.
  • the dimmer switch is suitable for public places such as family rooms, apartments, hotels and hospitals, and can meet people's different needs for light brightness in different periods or scenes.
  • dimming needs can be roughly divided into three categories: functional light adjustment needs, such as entrance halls and conference rooms, etc.; requirements for comfort and living style in home life, such as light and dark matching and color temperature. It can be adjusted according to the needs of the environment, and can also play a role in setting off the atmosphere; the needs of environmental protection and energy saving, such as parking lot lighting, shopping mall lighting and road lighting.
  • the present application provides a design method of a dimming switch and a dimming switch, so as to achieve the purpose of enriching the functions of the dimming switch and ensuring that the dimming switch can effectively turn off lights.
  • a design method of a dimmer switch including:
  • the switch circuit includes a switch signal output terminal, and the switch signal output terminal is configured to output a first switch signal used to indicate that the switch circuit is on or off;
  • a load loop is constructed, wherein the load loop includes a dimming signal input end and a control end, the dimming signal input end is configured to receive a dimming control signal, the control end is configured to receive a second switch signal, the first Two switch signals are used to control the on-off of the load loop;
  • a dimming control branch is constructed, wherein the dimming control branch is configured to receive the first switch signal, output the second switch signal according to the first switch signal, and output the output signal according to the received dimming command. the dimming control signal.
  • a dimming switch including a switch unit, a load unit and a control unit; wherein,
  • the switch unit is arranged in parallel with the power supply line, and forms a switch loop with the power supply line, and the switch unit includes a switch signal output end;
  • the load unit is arranged in series with the load, and the load unit and the load connected in series are arranged in parallel with the power supply line, forming a load loop with the power supply line, and the load unit includes a dimming signal input end and Control terminal;
  • the control unit includes a first signal end, a second signal end and a third signal end, and the control unit communicates with the switch signal output end,
  • the dimming signal input terminal is connected with the control terminal.
  • FIG. 1 is a flowchart of a method for designing a dimmer switch provided by an embodiment
  • FIG. 2 is a structural block diagram of a dimming switch provided by an embodiment
  • FIG. 3 is a schematic diagram of a dimmer switch provided by an embodiment.
  • FIG. 1 is a flowchart of a method for designing a dimmer switch according to an embodiment.
  • the design method includes:
  • the constructed switch loop includes a switch signal output terminal, and the switch signal output terminal is configured to output a first switch signal used to indicate whether the switch circuit is on or off.
  • a switch unit may be configured in the dimmer switch, and the switch unit may be designed to be connected in series or in parallel with the power supply line (Live, Neureal, L , N)), the switch circuit is formed by the switch unit and the power supply line (L, N).
  • the switch unit is configured to control the on-off of the switch loop, and outputs a first switch signal indicating that the switch loop is turned on when the switch loop is turned on; and outputs a first switch signal that the switch loop is turned off when the switch loop is turned off Signal.
  • a first switch and a switch signal detection module can be provided when constructing a switch loop, and a switch unit is formed by connecting the first switch and the switch signal detection module in series.
  • the switch signal detection module may be designed as a rectifier circuit module or an AC voltage sampling circuit module.
  • the second voltage input end of the detection module is the second contact
  • the switch unit is set in parallel with the power supply line (L, N) through the first contact and the second contact to form a switch loop
  • the first switch is configured to control the execution of the on-off of the switch loop device.
  • the output terminal of the switch signal detection module is set as the third contact, that is, the switch signal output terminal. break.
  • the switching signal detection module adopts an AC voltage sampling circuit module. When the switching loop is turned on, the output end of the AC voltage sampling circuit module outputs a high-level signal, and the high-level signal indicates that the switching loop is in a conducting state.
  • the constructed load loop includes a dimming signal input terminal and a control terminal.
  • the dimming signal input terminal is set to receive a dimming control signal
  • the control terminal is set to receive a second switch signal
  • the second switch signal is used to control the load. on-off of the circuit.
  • the load is a light-emitting diode (Light-Emitting Diode, LED) lamp, and the LED lamp is arranged in the load circuit.
  • LED Light-Emitting Diode
  • a load unit may be included in the dimmer switch, and the LED lamp and the load unit may be designed in series, and the LED lamp and the load unit connected in series are connected in parallel with the power supply lines (L, N), and the LED lamp, the load unit and the power supply are connected in parallel. Lines (L, N) form the load circuit.
  • the load unit is configured to receive the second switch signal through the control terminal, thereby controlling the on-off of the load loop; and receive the dimming signal through the dimming signal input terminal, so as to realize dimming of the LED lamp.
  • a second switch and a dimming module when constructing a load loop, can be provided, and the second switch and the dimming module are connected in series to form a load unit.
  • the second switch adopts a controllable switch, such as a relay, a switch tube, etc.
  • the dimming module adopts a thyristor
  • the controllable switch is set as the execution device for controlling the on-off of the load circuit
  • the thyristor is set as the control device to control the adjustment of the LED light.
  • Light actuators such as a relay, a switch tube, etc.
  • the first end of the thyristor is set as the fifth contact
  • the second end of the thyristor is set to be connected to the first end of the controllable switch
  • the second end of the controllable switch is set as the fourth contact
  • the gate electrode of the thyristor is the sixth contact
  • the control terminal of the controllable switch is set as the seventh contact.
  • the constructed dimming control branch is configured to receive the first switch signal and output the second switch signal according to the first switch signal, and the dimming control branch is further configured to output the dimming control signal according to the received dimming instruction .
  • a control unit may be included in the dimming switch, and the control unit may coordinate the on/off states of the switch loop and the load loop, so that when the switch loop is turned on, the load loop is turned on, and when the switch loop is turned off, the load loop is turned on. disconnect.
  • control unit may be a single chip microcomputer or a microcontroller unit (Microcontroller Unit; MCU).
  • MCU Microcontroller Unit
  • the first signal terminal, the second signal terminal and the third signal terminal of the control unit are set to receive the first switch signal, output the dimming control signal and output the third signal terminal respectively.
  • Two switch signals wherein, when the first switch signal indicates that the switch loop is turned on, the second switch signal is a control signal to control the conduction of the load loop, and when the first switch signal indicates that the switch loop is turned off, the second switch signal is to control the load loop to be turned off control signal.
  • the dimming switch is designed to have relatively independent switch loops and load loops
  • the dimming control branch is designed to realize that the state of the load loop changes with the state of the switch loop, so as to realize the on-off state based on the switch loop.
  • On and off lights Since the switch loop and the load loop are relatively independent, when the switch loop is disconnected, even if there is still leakage current in the switch loop, the leakage current will not cause the lamp to glow, which is convenient for configuring a variety of different types of lights in the switch loop. Switches, such as dual-way switches, ensure that the lights are effectively turned off.
  • FIG. 2 is a structural block diagram of a dimmer switch provided by an embodiment.
  • the dimmer switch includes a switch unit 1 , a load unit 2 and a control unit 3 .
  • the switch unit 1 is connected in parallel with the power supply lines (L, N), and forms a switch loop with the power supply lines (L, N).
  • the switch unit 1 includes a switch signal output terminal a.
  • the load unit 2 and the load 4 are connected in series, and the connected load unit 2 and the load 4 are connected in parallel with the power supply lines (L, N), and form a load loop with the power supply lines (L, N).
  • the load unit 2 includes a dimming signal input end b and control terminal c.
  • the control unit 3 includes a first signal terminal, a second signal terminal, and a third signal terminal.
  • the control unit 3 communicates with the switch signal output terminal a and the dimming signal input terminal through the first signal terminal, the second signal terminal, and the third signal terminal, respectively.
  • b is connected to the control terminal c.
  • the load 4 is an LED lamp.
  • the control unit 3 is a single-chip microcomputer.
  • the working process of the dimmer switch includes:
  • Step 1 The switch unit 1 receives the light on/off command issued by the operator, and controls the switch circuit to be disconnected or turned on according to the light on/off command.
  • the switch unit 1 is configured to receive a light on and off instruction issued by an operator.
  • the switch unit 1 may include a manually-operated mechanical switch, and an operator may issue a light on/off command through the manual-operated mechanical switch, and turn on or off the switch circuit through the manual-operated mechanical switch.
  • the light opening and closing command can also be a remote control command
  • the dimming switch can include a wireless communication module, and the remote control command is received through the wireless communication module.
  • the wireless communication module is connected with the control unit 3, and the control unit 3 can control the switch unit 1 according to the remote control command.
  • the switch is turned on or off to turn on or off the switch loop.
  • the light on/off instruction can also be a voice instruction
  • the dimmer switch can include a voice recognition module, which receives the voice instruction through the voice recognition module, and the voice recognition module is connected to the control unit 3, and the control unit 3 can control the switch according to the voice instruction.
  • the switch in unit 1 is closed or open.
  • Step 2 The switch unit 1 outputs the on-off state of the switch loop through the switch signal output terminal a.
  • the switch signal output terminal a when the switch loop is turned on, the switch signal output terminal a can output a high-level signal, and when the switch loop is disconnected, the switch signal output terminal a can output a low-level signal. Indicates the on-off state of the switch circuit.
  • the switch unit 1 may include functional circuits such as a rectifier circuit, an AC voltage sampling circuit, and the like, through which the switch signal output terminal a can output a corresponding level signal according to the on-off state of the switch loop.
  • functional circuits such as a rectifier circuit, an AC voltage sampling circuit, and the like, through which the switch signal output terminal a can output a corresponding level signal according to the on-off state of the switch loop.
  • Step 3 The control unit 3 collects the on-off state of the switch loop, and controls the on-off state of the load loop to be the same as the on-off state of the switch loop.
  • the load loop includes switching devices, such as relays, switches, etc., if the control unit 3 determines that the switch loop is turned on, the control load loop is turned on, and if the control unit 3 determines that the switch loop is turned off, the load loop is controlled to be turned off. .
  • Step 4 The control unit 3 receives the dimming instruction issued by the operator, adjusts the dimming parameters according to the dimming instruction, and realizes the dimming through the load unit 2 .
  • the load unit 2 includes a thyristor
  • the dimming parameter is the time period during which the gate voltage of the thyristor rises to the gate voltage
  • the gate voltage refers to the voltage at which the thyristor is turned on.
  • control unit 3 may include a control chip, and a pulse width modulation (Pulse Width Modulation, PWM) wave output by the control chip can be used to control the thyristor, and the thyristor can be changed by changing the duty ratio of the PWM wave. turn-on time.
  • the dimming command may be a remote control command.
  • the control unit 3 may also include a resistance-capacitance (Resistance-Capacitance, RC) charging circuit.
  • the resistance is a variable resistor, and one end of the capacitor is connected to the control electrode of the thyristor.
  • the charging time of the capacitor can be changed, thereby changing the conduction time of the thyristor.
  • the resistance value of the variable resistor can be changed by the rotary switch, and then the dimming command can be generated.
  • the dimmer switch has a relatively independent switch unit and a load unit.
  • the switch unit can form a switch circuit
  • the load unit can form a load circuit.
  • the dimmer switch can realize that the state of the load unit follows the state of the switch unit through the control unit. It can be changed according to the change of the switch unit, so as to control the opening and closing of the lamp based on the switch unit. Since the switch unit and the load unit are relatively independent, when the switch unit is turned off, even if there is still leakage current in the switch loop, the leakage current will not cause the lamp to glow, which is convenient for configuring a variety of different types of lights in the switch unit. Switches, such as dual-way switches, ensure that the lights are effectively turned off.
  • FIG. 3 is a schematic diagram of a dimming switch provided by an embodiment.
  • the switch unit includes a first switch 11 and a switch signal detection module 12.
  • the first switch 11 and the switch signal detection module The modules 12 are connected in series.
  • the switch signal detection module 12 includes a switch signal output terminal a, and the switch signal output terminal a is configured to output a first switch signal used to indicate whether the switch loop is on or off.
  • the first switch 11 in FIG. 3 adopts a mechanical switch, such as a double-control switch, a multi-control switch, etc., and the first switch 11 is set to control the on-off of the switch loop.
  • the switch signal detection module 12 includes an optocoupler U1 , and the optocoupler U1 includes a first end, a second end, a third end and a fourth end.
  • the optocoupler U1 is connected to the first switch 11 through the first end of the optocoupler U1 , and then connected to the power supply line L through the first switch 11 .
  • the optocoupler U1 is connected to the power supply line N through the second end of the optocoupler U1.
  • the third end of the optocoupler U1 is the switch signal output end a, which is connected to the control unit 3 through the third end of the optocoupler U1.
  • the optocoupler U1 is connected to the reference level terminal (ground) through the fourth terminal of the optocoupler U1.
  • the switch signal detection module 12 may further include a resistor R1 , a resistor R2 , a resistor R3 , a diode D1 and a capacitor C1 .
  • the first end of the optocoupler U1 is connected to the first switch 11 through the resistor R1, and current limiting is realized through the resistor R1.
  • the second end of the optocoupler U1 is connected to the power supply line N through the diode D1.
  • Resistor R2 and resistor R3 form a voltage divider circuit, and capacitor C1 is connected in parallel with resistor R3.
  • the switch loop when the first switch 11 is disconnected, the switch loop is disconnected, and the voltage at the switch signal output end a is the power supply voltage divided by the resistors R2 and R3, that is, the first output voltage at the switch signal output end a.
  • the switch signal is a high level signal.
  • the switch loop When the first switch 11 is closed, the switch loop is turned on, and the resistor R3 is short-circuited.
  • the voltage of the switch signal output terminal a is the ground voltage, that is, the first switch signal output by the switch signal output terminal a is a low level signal.
  • the control unit 3 can determine the on-off state of the switch loop according to the first switch signal output from the switch signal output terminal a.
  • the load unit includes a second switch 22 and a dimming module 21 , and the second switch 22 is connected in series with the dimming module 21 .
  • the second switch 22 includes a control terminal c, the second switch 22 is connected to the control unit 3 through the control terminal c, and the control terminal c is configured to receive a second switch signal, and the second switch signal is used to control the on-off of the second switch 22 .
  • the dimming module 21 includes a dimming signal input end b. The dimming module 21 is connected to the control unit 3 through the dimming signal input end b. The dimming signal input end b is set to receive the dimming control signal, and the dimming control signal is used for Control the dimming module 21 to dim the light.
  • the second switch 22 may include a switch tube T1 and a relay J1, the load 4 is connected to the relay J1, and the first end and the second end of the switch tube T1 are respectively connected to the relay J1 and the reference level terminal,
  • the third end of the switch tube T1 is the control end c.
  • the control unit 3 controls the switch tube T1 to be turned on.
  • the switch tube T1 When the switch tube T1 is turned on, the coil in the relay J1 is energized, the contacts in the relay J1 are pulled in, and the load circuit is turned on. Pass.
  • the control unit 3 controls the switch tube T1 to be disconnected.
  • the switch tube T1 When the switch tube T1 is disconnected, the coil in the relay J1 is de-energized, the contacts in the relay J1 are reset, and the load circuit is disconnected.
  • the dimming module 21 uses a thyristor, the gate of the thyristor is the dimming signal input terminal b, and the gate of the thyristor is connected to the control unit 3, and the control unit 3 controls the thyristor through PWM waves, In order to realize the dimming control of the load 4 .
  • the dimming module 21 may also use a thyristor, and its function and connection method are similar to those of a thyristor, and the technical solution will not be repeated here.

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Abstract

提供了一种调光开关的设计方法及调光开关。调光开关的设计方法包括：构建开关回路，其中，开关回路包括开关信号输出端，开关信号输出端设置为输出用于表示开关回路通断的第一开关信号；构建负载回路，其中，负载回路包括调光信号输入端以及控制端，调光信号输入端设置为接收调光控制信号，控制端设置为接收第二开关信号，第二开关信号用于控制负载回路的通断；构建调光控制支路，其中，调光控制支路设置为接收第一开关信号，根据第一开关信号输出第二开关信号，以及根据接收的调光指令输出调光控制信号。

Description

调光开关的设计方法及调光开关
本申请要求在2020年11月27日提交中国专利局、申请号为202011360392.4的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及开关技术领域，例如涉及一种调光开关的设计方法及调光开关。
背景技术
调光开关适用于家庭居室、公寓、酒店以及医院等公共场所，可以满足人们在不同时段或者场景对灯光亮度的不同需求。
常见的调光的需求可以大体分为三类：功能型调节光线的需要，如进门的玄关以及会议室等；家居生活中舒适性和生活格调体现的需求，比如对灯光的明暗搭配以及色温冷暖的调节，既可以根据环境的需要进行调节，也可以起到烘托氛围的作用；环保节能的需要，比如停车场照明、商场照明以及道路照明等。
随着灯光控制需求的发展，陆续出现了双控调光开关、触控调光开关等功能丰富的调光开关，但相关技术中，上述调光开关的接线方式与一般的墙壁开关没有区别，通常采用单火线输入的接线方式，关闭调光开关时，调光开关的供电回路中若存在漏电流，则容易造成灯光频闪的问题。
发明内容
本申请提供一种调光开关的设计方法及调光开关，以达到在丰富调光开关功能的同时，保证调光开关可以有效关闭灯的目的。
提供了一种调光开关的设计方法，包括：
构建开关回路，其中，所述开关回路包括开关信号输出端，所述开关信号输出端设置为输出用于表示所述开关回路通断的第一开关信号；
构建负载回路，其中，所述负载回路包括调光信号输入端以及控制端，所述调光信号输入端设置为接收调光控制信号，所述控制端设置为接收第二开关信号，所述第二开关信号用于控制所述负载回路的通断；
构建调光控制支路，其中，所述调光控制支路设置为接收所述第一开关信 号，根据所述第一开关信号输出所述第二开关信号，以及根据接收的调光指令输出所述调光控制信号。
还提供了一种调光开关，包括开关单元、负载单元以及控制单元；其中，
所述开关单元设置为与供电线路并联，与所述供电线路构成开关回路，所述开关单元包括开关信号输出端；
所述负载单元设置为与负载串联，串联后的所述负载单元与所述负载设置为与所述供电线路并联，与所述供电线路构成负载回路，所述负载单元包括调光信号输入端以及控制端；
所述控制单元包括第一信号端、第二信号端以及第三信号端，所述控制单元通过所述第一信号端、第二信号端和第三信号端分别与所述开关信号输出端、调光信号输入端和所述控制端相连接。
附图说明
图1是一实施例提供的一种调光开关的设计方法的流程图；
图2是一实施例提供的一种调光开关的结构框图；
图3是一实施例提供的一种调光开关的原理图。
具体实施方式
下面结合附图和实施例对本申请进行说明。
实施例一
图1是一实施例提供的一种调光开关的设计方法的流程图，参考图1，本实施例中，设计方法包括：
S1、构建开关回路。
本实施例中，构建的开关回路包括开关信号输出端，开关信号输出端设置为输出用于表示开关回路通断的第一开关信号。
示例性的，通过本实施例提出的设计方法进行调光开关设计时，可以在调光开关中配置一开关单元，可以设计开关单元串联或并联于供电线路(火线零线(Live、Neureal，L、N))中，通过开关单元和供电线路(L、N)构成开关回路。
示例性的，开关单元设置为控制开关回路的通断，并在开关回路导通时输出表示开关回路导通的第一开关信号；在开关回路断开时输出表示开关回路断开的第一开关信号。
作为一种可实施方案，构建开关回路时可以设置第一开关以及开关信号检测模块，将第一开关与开关信号检测模块串联形成开关单元。
示例性的，开关信号检测模块可以设计为整流电路模块或者交流电压采样电路模块。设置开关信号检测模块的第一电压输入端(正电压输入端或负电压输入端)与第一开关的第一端相连接，将第一开关的第二端配置为第一接点，设置开关信号检测模块的第二电压输入端为第二接点，设置开关单元通过第一接点和第二接点与供电线路(L、N)并联形成开关回路，将第一开关配置为控制开关回路通断的执行器件。
设置开关信号检测模块的输出端为第三接点，即开关信号输出端，设置开关信号检测模块的输出端的输出信号为第一开关信号，通过开关信号检测模块的输出端的输出信号表示开关回路的通断。例如，开关信号检测模块采用交流电压采样电路模块，当开关回路导通时，交流电压采样电路模块的输出端输出一高电平信号，利用高电平信号表示开关回路处于导通状态。
S2、构建负载回路。
本实施例中，构建的负载回路包括调光信号输入端以及控制端，调光信号输入端设置为接收调光控制信号，控制端设置为接收第二开关信号，第二开关信号用于控制负载回路的通断。
示例性的，负载为发光二极管(Light-Emitting Diode，LED)灯，LED灯设置于负载回路中。
示例性的，调光开关中可以包括一负载单元，并设计LED灯与负载单元串联，串联后的LED灯与负载单元再与供电线路(L、N)并联，通过LED灯、负载单元和供电线路(L、N)构成负载回路。
示例性的，负载单元设置为通过控制端接收第二开关信号，进而控制负载回路的通断；通过调光信号输入端接收调光信号，进而对LED灯实现调光。
作为一种可实施方案，构建负载回路时，可以设置第二开关以及调光模块，将第二开关与调光模块串联形成负载单元。
设置负载单元的第四接点、第五接点、第六接点、第七接点，设置负载单元通过第四接点与负载的第一端相连接，设置负载单元和负载通过负载的第二端以第五接点与供电线路(L、N)并联形成负载回路，设置第六接点为调光信号输入端，设置第七接点为控制端。
示例性的，第二开关采用可控开关，例如继电器、开关管等，调光模块采用可控硅，设置可控开关作为控制负载回路通断的执行器件，设置可控硅作为控制LED灯调光的执行器件。
示例性的，设置可控硅的第一端为第五接点，设置可控硅的第二端与可控开关的第一端相连接，设置可控开关的第二端为第四接点，设置可控硅的门极为第六接点，设置可控开关的控制端为第七接点。
S3、构建调光控制支路。
本实施例中，构建的调光控制支路设置为接收第一开关信号，根据第一开关信号输出第二开关信号，调光控制支路还设置为根据接收的调光指令输出调光控制信号。
示例性的，调光开关中可以包括一控制单元，通过控制单元协调开关回路与负载回路的通断状态，使开关回路导通时负载回路随之导通，开关回路断开时负载回路随之断开。
示例性的，控制单元可以采用单片机或者微控制单元(Microcontroller Unit；MCU)。
作为一种可实施方案，构建调光控制支路时，设置控制单元的第一信号端、第二信号端和第三信号端分别设置为接收第一开关信号、输出调光控制信号和输出第二开关信号。其中，当第一开关信号表示开关回路导通时，第二开关信号为控制负载回路导通的控制信号，当第一开关信号表示开关回路断开时，第二开关信号为控制负载回路断开的控制信号。
本实施例中，设计调光开关具有相对独立的开关回路和负载回路，同时设计调光控制支路实现负载回路的状态跟随开关回路状态的变化而变化，以实现基于开关回路的通断状态实现灯的开闭。由于开关回路和负载回路相对独立，因此当开关回路断开时，即使开关回路中仍存在漏电流，该漏电流也不会使灯出现辉光现象，便于在开关回路中配置多种不同类型的开关，例如双控开关时，保证灯的有效关闭。
实施例二
图2是一实施例提供的一种调光开关的结构框图，参考图2，调光开关包括开关单元1、负载单元2以及控制单元3。
开关单元1与供电线路(L、N)并联，与供电线路(L、N)构成开关回路，开关单元1包括开关信号输出端a。
负载单元2与负载4串联，串联后的负载单元2与负载4与供电线路(L、N)并联，与供电线路(L、N)构成负载回路，负载单元2包括调光信号输入端b以及控制端c。
控制单元3包括第一信号端、第二信号端以及第三信号端，控制单元3通 过第一信号端、第二信号端和第三信号端分别与开关信号输出端a、调光信号输入端b和控制端c相连接。
示例性的，负载4为LED灯。控制单元3为单片机。
示例性的，调光开关的工作过程包括：
步骤1、开关单元1接收操作人员发出的灯光开闭指令，根据灯光开闭指令控制开关回路断开或导通。
示例性的，开关单元1设置为接收操作人员发出的灯光开闭指令。
例如，开关单元1可以包括人工操作机械开关，操作人员可以通过人工操作机械开关发出灯光开闭指令，通过人工机械开关导通或断开开关回路。
灯光开闭指令也可以为遥控指令，调光开关可以包括无线通信模块，通过无线通信模块接收遥控指令，无线通信模块与控制单元3相连接，控制单元3可以根据遥控指令控制开关单元1中的开关闭合或断开，以实现开关回路的导通或断开。
示例性的，灯光开闭指令也可以为语音指令，调光开关可以包括语音识别模块，通过语音识别模块接收语音指令，语音识别模块与控制单元3相连接，控制单元3可以根据语音指令控制开关单元1中的开关闭合或断开。
步骤2、开关单元1通过开关信号输出端a输出开关回路的通断状态。
示例性的，当开关回路导通时，开关信号输出端a可以输出一高电平信号，当开关回路断开时，开关信号输出端a可以输出一低电平信号，通过电平信号的高低表示开关回路的通断状态。
示例性的，开关单元1中可以包括整流电路、交流电压采样电路等功能电路，通过上述功能电路使开关信号输出端a可以根据开关回路的通断状态输出相应的电平信号。
步骤3、控制单元3采集开关回路的通断状态，控制负载回路的通断状态与开关回路的通断状态相同。
示例性的，负载回路中包括开关器件，例如继电器、开关等，若控制单元3判定开关回路导通，则控制负载回路导通，若控制单元3判定开关回路断开，则控制负载回路断开。
步骤4、控制单元3接收操作人员发出的调光指令，根据调光指令调整调光参数，通过负载单元2实现调光。
示例性的，负载单元2中包括可控硅，调光参数为可控硅的控制极电压上升至门电压的时长，门电压指使可控硅导通的电压。
示例性的，控制单元3中可以包括控制芯片，可以采用控制芯片输出的脉冲宽度调制(Pulse Width Modulation，PWM)波实现对可控硅的控制，通过改变PWM波的占空比改变可控硅的导通时刻。此时，调光指令可以为遥控指令。
控制单元3中也可以包括电阻-电容(Resistance-Capacitance，RC)充电电路，充电电路中，电阻采用可变电阻，电容的一端与可控硅的控制极相连接。通过改变可变电阻阻值的方式，可以改变电容的充电时长，进而改变可控硅的导通时刻。此时，可以通过旋钮开关改变可变电阻的阻值，进而生成调光指令。
本实施例中，调光开关具有相对独立开关单元和负载单元，通过开关单元可以构成开关回路，通过负载单元可以构成负载回路，同时，调光开关通过控制单元实现负载单元的状态跟随开关单元状态的变化而变化，以实现基于开关单元控制灯的开闭。由于开关单元和负载单元相对独立，因此当开关单元断开时，即使开关回路中仍存在漏电流，该漏电流也不会使灯出现辉光现象，便于在开关单元中配置多种不同类型的开关，例如双控开关时，保证灯的有效关闭。
图3是一实施例提供的一种调光开关的原理图，参考图3，作为一种可实施方案，开关单元包括第一开关11和开关信号检测模块12，第一开关11与开关信号检测模块12串联。开关信号检测模块12包括开关信号输出端a，开关信号输出端a设置为输出用于表示开关回路通断的第一开关信号。
示例性的，图3中第一开关11采用机械开关，例如双控开关、多控开关等，第一开关11设置为控制开关回路的通断。
可选的，参考图3，开关信号检测模块12包括光耦U1，光耦U1包括第一端、第二端、第三端和第四端。光耦U1通过光耦U1的第一端与第一开关11相连接，再通过第一开关11与供电线路L相连接。光耦U1通过光耦U1的第二端与供电线路N相连接。光耦U1的第三端为开关信号输出端a，通过光耦U1的第三端与控制单元3相连接。光耦U1通过光耦U1的第四端与参考电平端(地)相连接。
示例性的，参考图3，开关信号检测模块12还可以包括电阻R1、电阻R2、电阻R3、二极管D1和电容C1。
光耦U1的第一端通过电阻R1与第一开关11相连接，通过电阻R1实现限流。光耦U1的第二端通过二极管D1与供电线路N相连接。电阻R2和电阻R3构成分压电路，电容C1与电阻R3并联。
示例性的，当第一开关11断开时，开关回路断开，此时开关信号输出端a的电压为经过电阻R2和R3分压后的电源电压，即开关信号输出端a输出的第一开关信号为高电平信号。当第一开关11闭合时，开关回路导通，电阻R3被 短接，此时开关信号输出端a的电压为接地电压，即开关信号输出端a输出的第一开关信号为低电平信号。控制单元3根据开关信号输出端a输出的第一开关信号可以确定开关回路的通断状态。
可选的，参考图3，负载单元包括第二开关22和调光模块21，第二开关22与调光模块21串联。
第二开关22包括控制端c，第二开关22通过控制端c与控制单元3相连接，控制端c设置为接收第二开关信号，第二开关信号用于控制第二开关22的通断。调光模块21包括调光信号输入端b，调光模块21通过调光信号输入端b与控制单元3相连接，调光信号输入端b设置为接收调光控制信号，调光控制信号用于控制调光模块21调光。
示例性的，参考图3，第二开关22可以包括开关管T1和继电器J1，负载4与继电器J1相连，开关管T1的第一端和第二端分别与继电器J1和参考电平端相连接，开关管T1的第三端为控制端c。
示例性的，当开关回路导通时，控制单元3控制开关管T1导通，当开关管T1导通时，继电器J1中的线圈通电，继电器J1中的触点吸合，此时负载回路导通。当开关回路断开时，控制单元3控制开关管T1断开，当开关管T1断开时，继电器J1中的线圈失电，继电器J1中的触点复位，负载回路断开。
示例性的，调光模块21采用可控硅，可控硅的门极为调光信号输入端b，可控硅的门极与控制单元3相连接，控制单元3通过PWM波控制可控硅，以实现对负载4的调光控制。
示例性的，调光模块21也可以采用晶闸管，其功能与连接方式与可控硅类似，对技术方案不再赘述。

Claims (10)

  1. 一种调光开关的设计方法，包括：
    构建开关回路，其中，所述开关回路包括开关信号输出端，所述开关信号输出端设置为输出用于表示所述开关回路通断的第一开关信号；
    构建负载回路，其中，所述负载回路包括调光信号输入端以及控制端，所述调光信号输入端设置为接收调光控制信号，所述控制端设置为接收第二开关信号，所述第二开关信号用于控制所述负载回路的通断；
    构建调光控制支路，其中，所述调光控制支路设置为接收所述第一开关信号，根据所述第一开关信号输出所述第二开关信号，以及根据接收的调光指令输出所述调光控制信号。
  2. 如权利要求1所述的方法，其中，所述构建开关回路，包括：
    设置第一开关以及开关信号检测模块串联形成开关单元，其中，所述第一开关的第一端与所述开关信号检测模块的第一电压输入端相连接；
    设置所述开关单元通过所述开关单元的第一接点和第二接点与供电线路并联形成所述开关回路，设置所述开关单元的第三接点为所述开关信号输出端，其中，所述第一接点为所述第一开关的第二端，所述第二接点为所述开关信号检测模块的第二电压输入端，所述第三接点为所述开关信号检测模块的输出端。
  3. 如权利要求1所述的方法，其中，所述构建负载回路，包括：
    将第二开关与调光模块串联形成负载单元；
    设置所述负载单元的第四接点与负载的第一端相连接，设置所述负载单元和所述负载通过所述负载的第二端以及所述负载单元的第五接点与供电线路并联形成所述负载回路，设置所述负载单元的第六接点为所述调光信号输入端，设置所述负载单元的第七接点为所述控制端，其中，所述第二开关为可控开关，所述调光模块为可控硅，所述第五接点为所述可控硅的第一端，所述可控硅的第二端与所述可控开关的第一端相连接，所述第四接点为所述可控开关的第二端，所述第六接点为所述可控硅的门极，所述第七接点为所述可控开关的控制端。
  4. 如权利要求1所述的方法，其中，所述构建调光控制支路，包括：
    设置所述调光控制支路中的控制单元的第一信号端、第二信号端和第三信号端分别设置为接收所述第一开关信号、输出所述调光控制信号和输出所述第二开关信号。
  5. 一种调光开关，包括开关单元、负载单元以及控制单元；其中，
    所述开关单元设置为与供电线路并联，与所述供电线路构成开关回路，所 述开关单元包括开关信号输出端；
    所述负载单元设置为与负载串联，串联后的所述负载单元与所述负载设置为与所述供电线路并联，与所述供电线路构成负载回路，所述负载单元包括调光信号输入端以及控制端；
    所述控制单元包括第一信号端、第二信号端以及第三信号端，所述控制单元通过所述第一信号端、所述第二信号端和所述第三信号端分别与所述开关信号输出端、所述调光信号输入端和所述控制端相连接。
  6. 如权利要求5所述的调光开关，其中，所述开关单元包括第一开关与开关信号检测模块，所述第一开关与所述开关信号检测模块串联；
    所述第一开关设置为控制所述开关回路的通断；
    所述开关信号检测模块包括开关信号输出端，所述开关信号输出端设置为输出用于表示所述开关回路通断的第一开关信号。
  7. 如权利要求6所述的调光开关，其中，所述开关信号检测模块包括光耦，所述光耦包括第一端、第二端、第三端和第四端；
    所述光耦的第一端与所述第一开关相连接，所述光耦的第二端与所述供电线路相连接，所述光耦的第三端为所述开关信号输出端，所述光耦的第四端设置为与参考电平端相连接。
  8. 如权利要求5所述的调光开关，其中，所述负载单元包括：第二开关和调光模块，所述第二开关与所述调光模块串联；
    所述第二开关包括所述控制端，所述控制端设置为接收第二开关信号，第二开关信号用于控制所述第二开关的通断；
    所述调光模块包括所述调光信号输入端，所述调光信号输入端设置为接收调光控制信号，所述调光控制信号用于控制所述调光模块调光。
  9. 如权利要求8所述的调光开关，其中，所述第二开关包括开关管和继电器；
    所述负载与所述继电器相连，所述开关管的第一端与所述继电器相连接，所述开关管的第二端设置为与参考电平端相连接，所述开关管的第三端为所述控制端。
  10. 如权利要求8所述的调光开关，其中，所述调光模块采用可控硅。
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