Dimming circuit compatible with various dimmers and lighting system
By designing a dimming circuit compatible with multiple dimmers and using a signal amplification module to improve the accuracy of control commands, the compatibility problem caused by the variety of dimmers was solved, achieving efficient dimming effect and low-cost installation.
Patent Information
- Application Number
- CN202520504913.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-20
AI Technical Summary
In existing lighting systems, there are various types of dimmers, which leads to incompatibility between control modules, low dimming depth, high cost, low efficiency and inconvenient installation.
Design a dimming circuit compatible with multiple dimmers, including a power modulation module, a switch driver module, a signal amplification module, and a dimming control module. The signal amplification module amplifies the control commands to ensure that the dimming control module receives commands with higher precision, thereby controlling the on/off operation of the switch driver module and achieving compatibility with different dimmers.
It achieves compatibility with various dimmers, optimizes dimming effects, reduces production costs, and is easy and reliable to install.
Smart Images
Figure CN223942868U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lighting power supply driving technology, and in particular to a dimming circuit and lighting system compatible with multiple dimmers. Background Technology
[0002] Existing lighting dimming typically involves a dimmer generating and outputting control commands based on user input, which are then used by a control module to output PWM dimming signals to control the lamp's operation. However, in practical applications, there are various types of dimmers, such as 0-10V output potentiometers, 1-10V output potentiometers, multi-position switches, and PWM-controlled remote controls. Each type of dimmer outputs control commands with varying precision, leading to incompatibility between control modules. Forcing compatibility results in insufficient dimming depth when driving the lamps, failing to accurately deliver the desired lighting effect based on user needs.
[0003] However, if each dimmer were equipped with a corresponding control module, there would be problems such as high cost, low efficiency, and inconvenient installation. Utility Model Content
[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a dimming circuit and lighting system compatible with multiple dimmers, capable of adapting to different dimmers, optimizing dimming effects, with low production costs, and convenient and reliable installation.
[0005] A dimming circuit compatible with multiple dimmers according to a first aspect embodiment of the present invention includes: a power modulation module, the input terminal of which is connected to a power supply; a switch driving module, which is connected to a lamp to form at least a partial dimming driving branch, the output terminal of which is connected to the dimming driving branch; a signal amplification module, the input terminal of which is connected to multiple dimmers to obtain control commands, the signal amplification module being used to amplify the control commands; and a dimming control module, the feed-in terminal of which is connected to the output terminal of the signal amplification module, the control terminal of which is connected to the controlled terminal of the switch driving module, the dimming control module controlling the switch driving module to operate on and off according to the control commands.
[0006] A dimming circuit compatible with multiple dimmers according to an embodiment of the present invention has at least the following beneficial effects:
[0007] This utility model is a dimming circuit compatible with various dimmers. The input terminal of the signal amplification module can be connected to various models of dimmers. For the control commands output by the user to operate the dimmer, the signal amplification module can amplify the control commands, so that regardless of the type of dimmer, the dimming control module can obtain more accurate control commands, thereby deriving dimming control commands that are closer to the user's needs. The dimming control module then controls the switching drive module to operate on and off, modulating the light emission of the lamp. This design can be adapted to different dimmers, optimize the dimming effect, has low production cost, and is easy and reliable to install.
[0008] According to some embodiments of this utility model, the various dimmers include potentiometers, multi-position switch buttons, and PWM adjustable source.
[0009] According to some embodiments of the present invention, the dimming circuit compatible with multiple dimmers further includes an analog-to-digital converter module. The input terminal of the analog-to-digital converter module is used to connect with multiple dimmers to obtain control commands. The analog-to-digital converter module is used to convert the control commands into digital signals. The output terminal of the analog-to-digital converter module is connected to the input terminal of the signal amplification module.
[0010] According to some embodiments of this utility model, the dimming circuit compatible with multiple dimmers further includes an optocoupler isolation module, the input terminal of which is connected to the output terminal of the analog-to-digital conversion module, and the output terminal of which is connected to the input terminal of the signal amplification module.
[0011] According to some embodiments of this utility model, the signal amplification module includes a semiconductor switching transistor Q801, a semiconductor switching transistor Q802, an operational amplifier U805, resistors R819 and R818, capacitors C806, C807, and C808. The controlled terminal of the switching transistor Q802 is used to connect to various dimmers to obtain control commands. The input terminal of the switching transistor Q802 is connected to the controlled terminal of the switching transistor Q801 and the power supply, respectively. The input terminal of the switching transistor Q801 is connected to the first end of the resistor R818 and the power supply, respectively. The tail end of the resistor R818... The terminals are respectively connected to the first terminals of the resistor R819, the first terminals of the capacitor C806, and the first terminals of the capacitor C808. The last terminal of the resistor R819 is respectively connected to the first terminal of the capacitor C807 and the first input terminal of the operational amplifier U805. The second input terminal of the operational amplifier U805 is connected to the output terminal of the operational amplifier U805, the feed-in terminal of the dimming control module, and the last terminal of the capacitor C808. The output terminals of the switching transistor Q801, the output terminals of the switching transistor Q802, the last terminals of the capacitor C806, and the last terminals of the capacitor C807 are all grounded.
[0012] According to some embodiments of this utility model, the dimming circuit compatible with multiple dimmers further includes a temperature detection module, which is used to detect the operating temperature of the lamp, and the output terminal of the temperature detection module is connected to the feed-in terminal of the dimming control module.
[0013] According to some embodiments of this utility model, the temperature detection module includes a comparator U806, a diode D802, a thermistor RT801, a resistor R820, and a capacitor C818. The first input terminal of the comparator U806 is connected to the first terminal of the thermistor RT801, the first terminal of the resistor R820, and the first terminal of the capacitor C818, respectively. The output terminal of the comparator U806 is connected to the negative terminal of the diode D802. The positive terminal of the diode D802 is connected to the feed-in terminal of the dimming control module. The tail terminals of the RT801 and the capacitor C818 are both grounded. The tail terminal of the resistor R820 is connected to the power supply.
[0014] According to some embodiments of the present invention, the dimming control module includes a control unit and a drive unit. The feed-in terminal of the control unit is connected to the output terminal of the signal amplification module, the control terminal of the control unit is connected to the drive unit, and the drive unit is connected to the controlled terminal of the switch drive module. The control unit drives the switch drive module to switch on and off through the drive unit.
[0015] The lighting system, luminaire, and dimming circuit compatible with multiple dimmers disclosed in any of the above embodiments are according to a second aspect of the present invention.
[0016] The lighting system according to the embodiments of the present invention has at least the following beneficial effects:
[0017] The lighting system of this utility model uses the dimming circuit that is compatible with multiple dimmers disclosed in any of the above embodiments to modulate the light emission of the lamp. The dimming circuit can be adapted to different dimmers, optimize the dimming effect, has low production cost, and is convenient and reliable to install.
[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0020] Figure 1 This is a schematic diagram of the lighting system of this utility model, representing one embodiment.
[0021] Figure 2This is a circuit diagram of a dimming control module according to one embodiment of the dimming circuit of this utility model;
[0022] Figure 3 This is a circuit diagram of the signal amplification module of one embodiment of the dimming circuit of this utility model;
[0023] Figure 4 This is a circuit diagram of the optocoupler isolation module of one embodiment of the dimming circuit of this utility model.
[0024] Figure label:
[0025] Power modulation module 100; switch drive module 200; signal amplification module 300; dimming control module 400; control unit 410; drive unit 420; analog-to-digital conversion module 500; optocoupler isolation module 600; temperature detection module 700. Detailed Implementation
[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0027] In the description of this utility model, it should be understood that the directional descriptions, such as the terms "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0028] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0030] like Figures 1 to 4 As shown, a dimming circuit compatible with multiple dimmers according to a first aspect embodiment of the present invention includes a power modulation module 100, a switch drive module 200, a signal amplification module 300, and a dimming control module 400. The input terminal of the power modulation module 100 is connected to a power supply. The switch drive module 200 is connected to a lamp to form at least a partial dimming drive branch. The output terminal of the power modulation module 100 is connected to the dimming drive branch. The input terminal of the signal amplification module 300 can be connected to multiple dimmers to obtain control commands. The signal amplification module 300 amplifies the control commands. The feed-in terminal of the dimming control module 400 is connected to the output terminal of the signal amplification module 300. The control terminal of the dimming control module 400 is connected to the controlled terminal of the switch drive module 200. The dimming control module 400 controls the switch drive module 200 to operate on and off according to the control commands.
[0031] The power modulation module 100 may include a fuse, an EMI unit, a rectifier unit, and a voltage regulation unit connected in sequence. The rectifier unit may be a conventional full-bridge rectifier or half-bridge rectifier circuit composed of multiple diodes. The voltage regulation unit may be a switching power supply circuit. In traditional lighting systems, the control commands output by the dimmer are provided to the voltage regulation unit, which can output a suitable operating voltage to power the lamps to achieve the dimming effect, but it is not compatible with various dimmers.
[0032] The switch drive module 200 can be a semiconductor switch Q505. Specifically, the switch Q505 can be a transistor, MOSFET, or IGBT.
[0033] The lamp can be composed of multiple LED strings connected in series, parallel, or in a mixed manner. By adjusting the on / off state of the switch driver module 200 through the output PWM signal, the lamp can be dimmed by changing the operating current passing through it.
[0034] This utility model is a dimming circuit compatible with various dimmers. The input terminal of the signal amplification module 300 can be connected to various types of dimmers. For the control commands output by the user to operate the dimmer, the signal amplification module 300 can amplify the control commands, so that regardless of the type of dimmer, the dimming control module 400 can obtain more accurate control commands, thereby deriving dimming control commands that are closer to the user's needs. The dimming control module 400 then controls the switching drive module 200 to operate on and off, modulating the light emission of the lamp. This design can be adapted to different dimmers, optimize the dimming effect, has low production cost, and is easy and reliable to install.
[0035] In some embodiments of this utility model, the various dimmers include potentiometers, multi-position switches, and PWM adjustable source sources.
[0036] Specifically, some potentiometers can output control commands at voltage levels such as 0-10V or 1-10V depending on the rotation position; multi-position switch buttons can output control commands at different voltage levels depending on the pressing position; and PWM adjustable feedstocks can also output control commands with different duty cycles according to user needs.
[0037] In some embodiments of this utility model, such as Figure 1 , 4 As shown, the dimming circuit compatible with multiple dimmers also includes an analog-to-digital converter module 500. The input terminal of the analog-to-digital converter module 500 is used to connect with multiple dimmers to obtain control commands. The analog-to-digital converter module 500 is used to convert the control commands into digital signals. The output terminal of the analog-to-digital converter module 500 is connected to the input terminal of the signal amplification module 300.
[0038] The analog-to-digital converter module 500 may include a conventional analog-to-digital converter chip and its associated circuitry. The analog-to-digital converter module 500 converts the control commands of various types of dimmers from analog signals into digital signals, which are then analyzed and processed by the dimming control module 400 to improve control accuracy.
[0039] In some embodiments of this utility model, such as Figure 1 , 4 As shown, the dimming circuit compatible with multiple dimmers also includes an optocoupler isolation module 600. The input terminal of the optocoupler isolation module 600 is connected to the output terminal of the analog-to-digital converter module 500, and the output terminal of the optocoupler isolation module 600 is connected to the input terminal of the signal amplification module 300.
[0040] The optocoupler isolation module 600 can be selected from conventional optocouplers. The light emitter of the optocoupler module lights up according to the high-level part of the control command output by the dimmer, while the low-level part is turned off. The light receiver of the optocoupler then couples and senses to generate the isolated control command. The optocoupler isolation module 600 can isolate the interference signal output from the dimmer side, prevent the interference signal from interfering with the dimming control module 400, and ensure the control stability of the dimming control module 400.
[0041] In some embodiments of this utility model, such as Figure 3 As shown, the signal amplification module 300 includes a semiconductor switching transistor Q801, a semiconductor switching transistor Q802, an operational amplifier U805, resistors R819 and R818, capacitors C806, C807, and C808. The controlled terminal of the switching transistor Q802 is used to connect to various dimmers to obtain control commands. The input terminal of the switching transistor Q802 is connected to the controlled terminal of the switching transistor Q801 and the power supply. The input terminal of the switching transistor Q801 is connected to the first end of the resistor R818 and the power supply. The last end of the resistor R818 is connected to the control terminal of the switching transistor Q801 and the power supply. The first end of resistor R819, the first end of capacitor C806, and the first end of capacitor C808 are connected. The last end of resistor R819 is connected to the first end of capacitor C807 and the first input terminal of operational amplifier U805. The second input terminal of operational amplifier U805 is connected to the output terminal of operational amplifier U805, the feed-in terminal of dimming control module 400, and the last end of capacitor C808. The output terminals of switching transistor Q801 and Q802, the last end of capacitor C806, and the last end of capacitor C807 are all grounded.
[0042] Switching transistors Q801 and Q802 can be either transistors or MOSFETs. Switching transistors Q801 and Q802 can amplify the control command signal, increase the voltage amplitude of the operation command, and then achieve analog-to-digital signal conversion through low-pass filtering of operational amplifier U805.
[0043] In some embodiments of this utility model, such as Figure 1 As shown, the dimming circuit compatible with multiple dimmers also includes a temperature detection module 700, which is used to detect the operating temperature of the lamp. The output terminal of the temperature detection module 700 is connected to the feed-in terminal of the dimming control module 400.
[0044] The temperature detection module 700 can detect the operating temperature of the lamp. When the operating temperature is too high, the temperature detection module 700 can directly pull down the voltage of the control signal received by the dimming control module 400. The dimming control module 400 controls the switch drive module 200 to turn off, thereby turning off the lamp to reduce the operating temperature.
[0045] In some embodiments of this utility model, such as Figure 3 As shown, the temperature detection module 700 includes a comparator U806, a diode D802, a thermistor RT801, a resistor R820, and a capacitor C818. The first input terminal of the comparator U806 is connected to the first terminal of the thermistor RT801, the first terminal of the resistor R820, and the first terminal of the capacitor C818. The output terminal of the comparator U806 is connected to the negative terminal of the diode D802. The positive terminal of the diode D802 is connected to the feed-in terminal of the dimming control module 400. The tail terminals of the RT801 and the capacitor C818 are both grounded. The tail terminal of the resistor R820 is connected to the power supply.
[0046] The temperature-sensitive resistor RT801 can be an NTC resistor. The temperature-sensitive resistor RT801 senses the operating temperature of the lamp, and as the temperature rises, its resistance decreases. The temperature-sensitive resistor RT801 and resistor R820 divide the voltage, thereby causing the input voltage at the first input terminal of comparator U806 to decrease. Comparator U806 outputs a low level, thereby pulling down the voltage of the control signal received at the feed-in terminal of the dimming control module 400.
[0047] In some embodiments of this utility model, such as Figure 2 As shown, the dimming control module 400 includes a control unit 410 and a drive unit 420. The feed-in terminal of the control unit 410 is connected to the output terminal of the signal amplification module 300, and the control terminal of the control unit 410 is connected to the drive unit 420. The drive unit 420 is connected to the controlled terminal of the switch drive module 200. The control unit 410 drives the switch drive module 200 to switch on and off through the drive unit 420.
[0048] The control unit 410 can be a processor such as an MCU or CPU and its associated circuits. The drive unit 420 can be a signal amplification chip and its associated circuits. The drive unit 420 can improve the driving force of the dimming control signal, thereby driving the switch drive module 200 to switch on and off quickly, and achieving higher precision light effect adjustment.
[0049] The lighting system, luminaire, and dimming circuit compatible with multiple dimmers disclosed in any of the above embodiments are according to a second aspect of the present invention.
[0050] The switch driver module 200 is used to connect with the luminaire to form at least part of the dimming drive branch.
[0051] The lighting system of this utility model uses the dimming circuit that is compatible with multiple dimmers disclosed in any of the above embodiments to modulate the light emission of the lamp. The dimming circuit can be adapted to different dimmers, optimize the dimming effect, has low production cost, and is convenient and reliable to install.
[0052] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0053] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A dimming circuit compatible with multiple dimmers, characterized in that, include: A power modulation module, wherein the input terminal of the power modulation module is used to connect to the power supply; A switch driver module is used to connect with a luminaire to form at least a partial dimming drive branch, and the output terminal of the power modulation module is connected to the dimming drive branch. A signal amplification module, the input of which can be connected to various dimmers to obtain control commands, and the signal amplification module is used to amplify the control commands. A dimming control module is provided, wherein the receiving end of the dimming control module is connected to the output end of the signal amplification module, and the control end of the dimming control module is connected to the controlled end of the switch drive module. The dimming control module controls the switch drive module to operate on and off according to the control command.
2. The dimming circuit compatible with multiple dimmers according to claim 1, characterized in that: The various types of dimmers include potentiometers, multi-position switches, and PWM adjustable feed sources.
3. A dimming circuit compatible with multiple dimmers according to claim 1, characterized in that, It also includes an analog-to-digital converter module, the input of which is used to connect to various dimmers to obtain control commands, the analog-to-digital converter module is used to convert the control commands into digital signals, and the output of the analog-to-digital converter module is connected to the input of the signal amplification module.
4. A dimming circuit compatible with multiple dimmers according to claim 3, characterized in that, It also includes an optocoupler isolation module, the input of which is connected to the output of the analog-to-digital converter module, and the output of which is connected to the input of the signal amplification module.
5. A dimming circuit compatible with multiple dimmers according to claim 1, characterized in that: The signal amplification module includes semiconductor switching transistors Q801 and Q802, operational amplifier U805, resistors R819 and R818, capacitors C806, C807, and C808. The controlled terminal of switching transistor Q802 is used to connect to various dimmers to obtain control commands. The input terminal of switching transistor Q802 is connected to the controlled terminal of switching transistor Q801 and the power supply. The input terminal of switching transistor Q801 is connected to the first end of resistor R818 and the power supply. The last end of resistor R818 is connected to the power supply. The first end of resistor R819, the first end of capacitor C806, and the first end of capacitor C808 are connected. The last end of resistor R819 is connected to the first end of capacitor C807 and the first input terminal of operational amplifier U805. The second input terminal of operational amplifier U805 is connected to the output terminal of operational amplifier U805, the feed-in terminal of the dimming control module, and the last end of capacitor C808. The output terminals of switching transistor Q801 and Q802, the last end of capacitor C806, and the last end of capacitor C807 are all grounded.
6. A dimming circuit compatible with multiple dimmers according to claim 1, characterized in that: It also includes a temperature detection module, which is used to detect the operating temperature of the lamp, and the output of the temperature detection module is connected to the feed-in terminal of the dimming control module.
7. A dimming circuit compatible with multiple dimmers according to claim 6, characterized in that: The temperature detection module includes a comparator U806, a diode D802, a thermistor RT801, a resistor R820, and a capacitor C818. The first input terminal of the comparator U806 is connected to the first terminal of the thermistor RT801, the first terminal of the resistor R820, and the first terminal of the capacitor C818. The output terminal of the comparator U806 is connected to the negative terminal of the diode D802. The positive terminal of the diode D802 is connected to the feed-in terminal of the dimming control module. The tail terminals of the RT801 and the capacitor C818 are both grounded. The tail terminal of the resistor R820 is connected to the power supply.
8. A dimming circuit compatible with multiple dimmers according to claim 1, characterized in that: The dimming control module includes a control unit and a drive unit. The feed-in terminal of the control unit is connected to the output terminal of the signal amplification module, the control terminal of the control unit is connected to the drive unit, and the drive unit is connected to the controlled terminal of the switch drive module. The control unit drives the switch drive module to switch on and off through the drive unit.
9. A lighting system, characterized in that, This includes luminaires and dimming circuits compatible with multiple dimmers as described in any one of claims 1 to 8.