CN117202442B - Light control circuit - Google Patents
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- CN117202442B CN117202442B CN202311261499.7A CN202311261499A CN117202442B CN 117202442 B CN117202442 B CN 117202442B CN 202311261499 A CN202311261499 A CN 202311261499A CN 117202442 B CN117202442 B CN 117202442B
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Abstract
The invention provides a light control circuit, which comprises: an input circuit; the filtering constant current circuit is electrically connected with the input circuit; the auxiliary power supply circuit is electrically connected with the filtering constant current circuit; the stroboscopic removing circuit is electrically connected with the filtering constant current circuit; the control circuit is electrically connected with the filtering constant current circuit; the MCU processing circuit is electrically connected with the control circuit; wherein, the burning interface of the singlechip of the MCU processing circuit can be reused. The invention provides a light control circuit which can realize phase-cut dimming of a lamp, multi-gear power and multi-gear color temperature, is intelligent in control, small in size and convenient for mass production.
Description
Technical Field
The invention relates to the technical field of LED lighting circuits, in particular to a light control circuit.
Background
The lighting industry demands for lamps for increased functionality due to various considerations. For example, in order to reduce inventory model types, a lamp is required to be compatible with multi-gear power and multi-gear color temperature; in order to achieve both lighting and atmosphere, the lamp is required to be warm, white, red, green and blue, and can be adjusted in a light manner, and can be switched; with the continuous emergence of intelligent lamps, the intelligent wireless module/sensor control can be received on the lamps; in order to meet the requirements of low cost performance and small volume and thin thickness, a main control power supply is required to adopt a linear power supply; the wall switch control can be realized; no stroboscopic effect and the like can be achieved.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provide the light control circuit which can realize the phase-cut dimming of the lamp, multi-gear power and multi-gear color temperature, is intelligently controlled, has small volume and is convenient for mass production.
In order to achieve the technical purpose and the technical effect, the invention is realized by the following technical scheme:
the invention provides a light control circuit, which comprises:
An input circuit;
The filtering constant current circuit is electrically connected with the input circuit;
The auxiliary power supply circuit is electrically connected with the filtering constant current circuit;
the stroboscopic removing circuit is electrically connected with the filtering constant current circuit;
the control circuit is electrically connected with the filtering constant current circuit; and
The MCU processing circuit is electrically connected with the control circuit;
wherein, the burning interface of the singlechip of the MCU processing circuit can be reused.
In one embodiment of the present invention, the light control circuit further includes an input signal detection circuit, and the input signal detection circuit is electrically connected to the input circuit.
In one embodiment of the invention, the light control circuit further comprises a shift switch power-adjusting color temperature-adjusting circuit, and the shift switch power-adjusting color temperature-adjusting circuit is electrically connected with the control circuit and the MCU processing circuit.
In one embodiment of the invention, the light control circuit further comprises a constant current control circuit, and the constant current control circuit is electrically connected with the control circuit and the filtering constant current circuit.
In one embodiment of the present invention, the light control circuit further comprises an LED load, and the LED load is electrically connected to the stroboscopic removing circuit.
In one embodiment of the present invention, the de-strobe circuit includes a zener diode ZD3, a resistor R19, a capacitor C5, a MOS transistor Q6, a resistor R20, and a zener diode ZD4, where the zener diode ZD3, the resistor R19, the capacitor C5, the MOS transistor Q6, the resistor R20, and the zener diode ZD4 are electrically connected.
In one embodiment of the invention, the control circuit comprises a standby power consumption control module, a three-gear power control module, a cold color control module and a warm color control module, wherein the standby power consumption control module is used for controlling signals of standby power consumption, the three-gear power control module is used for controlling power of a second gear and a third gear, and the cold color control module and the warm color control module are respectively used for controlling switching and color temperature duty ratio modulation of two cold-warm street lamp beads.
In one embodiment of the present invention, the model of the single chip microcomputer of the MCU processing circuit is Rb7F095ASF.
In summary, the invention provides a light control circuit, which can control different modes of a lamp through a wall switch, realize that a plurality of models are integrated in one lamp, reduce the management of stock model types, reduce the logistics cost and stock pressure, be compatible with phase-cut dimming, multi-gear power and multi-gear color temperature, better match the actual application requirements of terminal consumers, give consideration to lighting and atmosphere lamps, realize that the lamp is warm, white and colored, and have switchable, and the product has more market competitiveness, can realize intelligent control through an external intelligent wireless module/sensor, adopt a linear constant-current power supply, conveniently meet the requirements of low cost performance and volume and thin thickness, facilitate the appearance and modeling design of the lamp, select branch software execution of different functions, simplify the material number, reduce the material management and control difficulty, and realize more convenient batch production.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a block diagram of the overall circuit architecture of the present invention;
FIG. 2 is a circuit diagram of a jumper selection procedure of the present invention;
FIG. 3 is a circuit diagram of an input circuit of the present invention;
Fig. 4 is a circuit diagram of a filtering constant current circuit of the present invention;
FIG. 5 is a circuit diagram of an LED load of the present invention;
FIG. 6 is a circuit diagram of the auxiliary power circuit of the present invention;
FIG. 7 is a circuit diagram of a deflash circuit of the present invention;
FIG. 8 is a circuit diagram of a control circuit of the present invention;
FIG. 9 is a circuit diagram of an input signal detection circuit of the present invention;
FIG. 10 is a circuit diagram of a power-and color-temperature-adjusting circuit of a shift switch according to the present invention;
fig. 11 is a circuit diagram of the constant current control circuit of the present invention;
FIG. 12 is a circuit diagram of the MCU processing circuit of the present invention;
FIG. 13 is a flow chart of the present invention for selecting different program branches.
Detailed Description
The invention will be described in detail below with reference to the drawings in combination with embodiments.
Referring to fig. 1 and 3, the present invention provides a light control circuit, which can realize phase-cut dimming, multi-gear power and multi-gear color temperature of a lamp, and has the advantages of intelligent control, small volume and convenient mass production. Specifically, the light control circuit includes an input circuit, the input circuit includes a fuse resistor FR1, a varistor MOV1, a rectifier bridge BD1, the fuse resistor FR1 is electrically connected to the varistor MOV1, the varistor MOV1 is electrically connected to the rectifier bridge BD1, and the rectifier bridge BD1 is grounded. The protection circuit plays roles of overcurrent protection/short circuit protection, lightning pulse protection, inrush surge protection and full-wave rectification.
Referring to fig. 1 and fig. 4, in an embodiment of the invention, the light control circuit further includes a filtering constant current circuit, and the filtering constant current circuit is electrically connected to the input circuit. The filter auxiliary circuit comprises relevant configuration elements of a chip U1, a diode D1, a transient suppression voltage diode TVS1, an electrolytic capacitor EC1 and a resistor R1, wherein the relevant configuration elements of the chip U1, the diode D1, the transient suppression voltage diode TVS1, the electrolytic capacitor EC1 and the resistor R1 are electrically connected. U1 is a main control IC, compatible with the phase-cut dimming function, and the model of the chip U1 is OB5656. The diode D1, the electrolytic capacitor EC1 and the resistor R1 can realize the effect of reducing stroboscopic effect, and PF is more than 0.9 by matching with the arrangement of the resistor R3 and the resistor R4 of the chip U1; the capacitor C2 is a compensation element of the IC; the resistor R7 is a thermal protection setting; HVB entered via resistor R2 is set for bleed current; resistor R5, resistor R6 is the first gear current of the set IC, resistor R21, resistor R22 are the second gear current of the set IC, resistor R23, resistor R24 are the third gear current of the set IC; p0 is a standby power consumption control signal, and P1 and P2 are second-gear and third-gear current setting control signals; the TVS1 is used for protecting the input lightning surge and protecting the 8 th pin of the IC from damage.
Referring to fig. 1 and 6, in an embodiment of the present invention, the light control circuit further includes an auxiliary power supply circuit, an MCU processing circuit, and a power-shift color temperature-adjusting circuit, where the auxiliary power supply circuit is electrically connected to the filtering constant current circuit. The auxiliary power supply circuit comprises a chip U2, a capacitor C4, a diode D2, a resistor R8, an inductor L2, an electrolytic capacitor EC2, a capacitor C3, a diode D4 and an electrolytic capacitor EC3, wherein the chip U2, the capacitor C4, the diode D2, a resistor R8, the inductor L2, the electrolytic capacitor EC2, the capacitor C3, the diode D4 and the electrolytic capacitor EC3 are electrically connected, and the model of the chip U2 is BP2525B. The power and temperature adjusting circuit is used for providing 5V power supply for the MCU processing circuit and the gear shifting switch.
Referring to fig. 1 and 7, in an embodiment of the present invention, the light control circuit further includes a strobe removing circuit, and the strobe removing circuit is electrically connected to the filtering constant current circuit. The stroboscopic removing circuit comprises a voltage stabilizing diode ZD3, a resistor R19, a capacitor C5, a MOS transistor Q6, a resistor R20 and a voltage stabilizing tube ZD4, wherein the voltage stabilizing diode ZD3, the resistor R19, the capacitor C5, the MOS transistor Q6, the resistor R20 and the voltage stabilizing tube ZD4 are electrically connected. The MOS transistor Q6 works in a linear region to eliminate output ripple current. The zener diode ZD3 provides overvoltage protection between the MOS transistor Q6 and the leakage protector GS.
Referring to fig. 1 and 8, in an embodiment of the present invention, the light control circuit further includes a control circuit, and the control circuit is electrically connected to the filtering constant current circuit. The control circuit comprises a standby power consumption control module, a three-gear power control module, a cold color control module and a warm color control module, wherein the standby power consumption control module is used for controlling signals of the standby power consumption, when a lamp is extinguished, a 6 th pin HP of a chip U1 needs to be disconnected, the signals of the resistor R4 to the ground pass through a resistor R3, and otherwise, the standby power consumption can exceed a standard required 0.5Wmax value. The third-gear power control module is used for controlling the power of the second gear and the third gear, the P-MED signal controls the MOS tube Q7 through the resistor R31, and the P-HI signal controls the MOS tube Q8 through the resistor R32. The cold color control module and the warm color control module are respectively used for controlling the switch and the color temperature duty ratio modulation of the cold and warm street lamp beads. And PWM-CW passes through a resistor R12, a resistor R14, a resistor R9, a resistor R11, a MOS tube Q2, a MOS tube Q3, a voltage stabilizing diode ZD1 and PWM-WW respectively controls the switch and the color temperature duty ratio modulation of the cold and warm street lamp beads through a resistor R16, a resistor R18, a resistor R15, a resistor R17, a MOS tube Q4, a MOS tube Q5 and a voltage stabilizing diode ZD 2. The zener diode ZD1 and the zener diode ZD2 play a role in protecting the MOS transistor Q3 and the MOS transistor Q5.
Referring to fig. 1 and 12, in an embodiment of the present invention, the MCU processing circuit is electrically connected to the control circuit. Wherein, the burning interface of the singlechip of the MCU processing circuit can be multiplexed. Specifically, the MCU processing circuit comprises a singlechip U5, and the model of the singlechip U5 is Rb7F095ASF. The 5V voltage is filtered by a capacitor C7 and then is supplied to a singlechip U5, the input signals comprise ADC-IN, ADC-CCT and ADC-Sensor, the output signals comprise PWM-G, PWM-R, PWM-B, PWM-SW, PWM-CW and PWM-WW, and the burning signals comprise nRST, PCLK, PDAT. The ADC-Sensor signal is obtained by connecting an external Sensor or wireless module through a terminal CN1, and may be, for example, microwave RF, wireless WIFI, bluetooth BLE. The resistor R51, the resistor R52 and the resistor R53 are used for selecting execution of different program branches through 2-n (n is the number of resistors) combinations, and the programming interfaces of the single chip microcomputer are fully utilized for multiplexing. When the resistor R51, the resistor R52 and the resistor R53 are not installed, the digital logic is 1 through the internal pull-up of the port, and when any resistor is installed, the port is pulled down to the ground by the resistor, and the digital logic is 0. So from 3 resistors there can be 8 choices, namely: 000, 001,010, 011,100,101,110,111; n resistors can achieve 2n choices. As shown in fig. 13. The resistor R51, the resistor R52 and the resistor R53 can be selected through management and control of different BOMs (bill of materials), and can also be selected through jumper points. As in fig. 2.
Referring to fig. 1 and 9, in an embodiment of the invention, the light control circuit further includes an input signal detection circuit, and the input signal detection circuit is electrically connected to the input circuit. Specifically, the input signal detection circuit includes a resistor R33, a resistor R34, a resistor R35, and a zener diode ZD5, the resistor R33, the resistor R34, the resistor R35, and the zener diode ZD5 are electrically connected to each other, and the resistor R35 and the zener diode ZD5 are grounded. The input full-wave rectification signal is subjected to attenuation through a resistor R33, a resistor R34, a resistor R35 and a zener diode ZD5, and is provided for the acquisition and processing of the singlechip U5, and the signal is marked as ADC-IN.
Referring to fig. 1 and 10, in an embodiment of the present invention, a power-adjusting and color-adjusting circuit of a shift switch is electrically connected to a control circuit and an MCU processing circuit. Specifically, the power and color temperature adjusting circuit of the shift switch comprises a three-gear power shift switch, when the switch SW1 is shifted to a first gear, the 1 st pin and the 2 nd pin are communicated, and the default low-gear power is adopted at the moment; when the switch SW1 is shifted to a second gear, the 1 st pin and the 3 rd pin are communicated, and at the moment, a 5V high-level signal is connected to the MOS tube Q7 to be conducted, so that the resistor R21 and the resistor R22 are connected in parallel with the resistor R5 and the resistor R6, the set output constant current is increased, and the set output constant current is the middle-gear power; similarly, when the switch SW1 is shifted to the second gear, the 1 st pin and the 4 th pin are communicated, and at the moment, a 5V high-level signal is connected to the MOS tube Q8 to be conducted, so that the resistor R23 and the resistor R24 are connected in parallel with the resistor R5 and the resistor R6, and the set output constant current is increased to be high-grade power. The shift switch power and color temperature regulating circuit also comprises a five-shift color temperature shift switch. The switch SW2 has five switch gears, different levels are obtained through resistor R25, resistor R27, resistor R28, resistor R29, resistor R30 and resistor R26, the different levels are given to the singlechip U5 through ADC-CCT, and different duty ratio PWM signals are given to control PWM-CW and PWM-WW through the processing of the singlechip U5, so that the color temperature switching of five-gear lamplight can be controlled. The capacitor C6 is a noise filtering function.
Referring to fig. 1 and 11, in an embodiment of the present invention, the light control circuit further includes a constant current control circuit, and the constant current control circuit is electrically connected to the control circuit and the filtering constant current circuit. The constant current control circuit may be an RGB constant current control circuit. The RGB constant current control circuit comprises a chip U3 and a chip U4, the model of the chip U3 and the model of the chip U4 are SM2123EGL, and the LED linear constant current control chip with the PWM dimming function is provided. The PWM-R signal is subjected to damping and filtering by a resistor R36 and a capacitor C8 to be input to the DIM1, and the resistor R41 and the resistor R42 are used for setting the current of the path. The other two PWM-G, PWM-B signals are similar. Vbus enters VIN of the chip U3 through the diode D5, the electrolytic capacitor EC4, the resistor R37 and the resistor R38 to supply power to the chip, and Vbus enters VIN of the chip U4 through the diode D6, the electrolytic capacitor EC5, the resistor R47 and the resistor R48 to supply power to the chip; r-enters OUT1 of a chip U3 through a resistor B1 to finish constant current; the resistor B1, the capacitor C10, the transient suppression voltage diode TVS3 and the capacitor C13 have ESD and spike protection effects; g-, B-are also analogous.
Referring to fig. 1 and 5, in an embodiment of the present invention, the light control circuit further includes an LED load, and the LED load is electrically connected to the stroboscopic removing circuit. The LED load comprises five paths of LED lamp bead loads with different color temperatures, namely warm color, cold color, red light, green light and blue light, and the brightness, the cold and warm properties and the color change of the lamp light can be realized by controlling the current flowing through the LED lamp bead loads.
In summary, the invention provides a light control circuit, which can control different modes of a lamp through a wall switch, realize that a plurality of models are integrated in one lamp, reduce the management of stock model types, reduce the logistics cost and stock pressure, be compatible with phase-cut dimming, multi-gear power and multi-gear color temperature, better match the actual application requirements of terminal consumers, give consideration to lighting and atmosphere lamps, realize that the lamp is warm, white and colored, and have switchable, and the product has more market competitiveness, can realize intelligent control through an external intelligent wireless module/sensor, adopt a linear constant-current power supply, conveniently meet the requirements of low cost performance and volume and thin thickness, facilitate the appearance and modeling design of the lamp, select branch software execution of different functions, simplify the material number, reduce the material management and control difficulty, and realize more convenient batch production.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims.
Claims (6)
1. A light control circuit, the light control circuit comprising:
An input circuit;
The filtering constant current circuit is electrically connected with the input circuit;
The auxiliary power supply circuit is electrically connected with the filtering constant current circuit;
the stroboscopic removing circuit is electrically connected with the filtering constant current circuit;
the control circuit is electrically connected with the filtering constant current circuit; and
The MCU processing circuit is electrically connected with the control circuit;
The programming interface of the singlechip of the MCU processing circuit can be multiplexed, and software with different functions is selected for execution;
The stroboscopic removing circuit comprises a zener diode ZD3, a resistor R19, a capacitor C5, a MOS transistor Q6, a resistor R20 and a zener diode ZD4, wherein the zener diode ZD3 is connected in parallel with the resistor R19 and the capacitor C5, the anode of the zener diode ZD3 is connected with the source of the MOS transistor Q6, the drain of the MOS transistor Q6 is connected with one end of the resistor R20 and the cathode of the zener diode ZD4, the grid of the MOS transistor Q6 is connected with the cathode of the zener diode ZD3, the other end of the resistor R20 and the anode of the zener diode ZD4, and the cathode of the zener diode ZD4 is electrically connected with a load;
The control circuit comprises a standby power consumption control module, a three-gear power control module, a cold color control module and a warm color control module, wherein the standby power consumption control module is used for controlling signals of standby power consumption, the three-gear power control module is used for controlling power of a second gear and a third gear, the cold color control module and the warm color control module are respectively used for controlling a switch and color temperature duty ratio modulation of two cold and warm street lamps, the standby power consumption control module comprises a MOS tube Q1, the drain electrode of the MOS tube Q1 is electrically connected with the filtering constant current circuit, the source electrode of the MOS tube Q1 is grounded and connected with one end of a resistor R13, the other end of the resistor R13 is connected with one end of a resistor R10 and the grid electrode of the MOS tube Q1, and the other end of the resistor R10 is connected with the MCU processing circuit;
The filtering constant current circuit comprises a chip U1, the model of the chip U1 is OB5656, the 1 st pin of the chip U1 is electrically connected with the cathode of a diode D1, the anode of the diode D1 is electrically connected with an input circuit, the 2 nd pin of the chip U1 is electrically connected with the input circuit after being connected with a resistor R2, the 2 nd pin of the chip U1 is also electrically connected with a capacitor C1 and then grounded, the 3 rd pin of the chip U1 and the anode of a transient suppression voltage diode TVS1 are grounded, the cathode of the transient suppression voltage diode TVS1 is connected with the 8 th pin of the chip U1, the 8 th pin of the chip U1 is connected with the gate of a MOS tube Q6, the cathode of the transient suppression voltage diode TVS1 is also connected with the cathode of an electrolytic capacitor EC1, the positive pole of electrolytic capacitor EC1 with the negative pole of diode D1 is connected, just electrolytic capacitor EC 1's both ends still connect in parallel with resistance R1, chip U1's 4 th pin passes through resistance R7 ground connection, chip U1's 5 th pin passes through electric capacity C2 ground connection, chip U1's 6 th pin is connected with one end of resistance R3, one end of resistance R4, and the other end of resistance R3, the other end of resistance R4 with MOS pipe Q1's drain electrode is connected, chip U1's 7 th pin is connected with parallelly connected resistance R5 and resistance R6 electricity back ground, and after the lamps and lanterns were put out, disconnection chip U1's 6 th pin passed through resistance R3 resistance R4 is to the signal of ground, otherwise the stand-by power consumption can exceed standard required 0.5W max value.
2. The light control circuit of claim 1, further comprising an input signal detection circuit electrically connected to the input circuit.
3. The light control circuit of claim 1, further comprising a shift switch power-to-color temperature circuit, wherein the shift switch power-to-color temperature circuit is electrically connected to the control circuit and the MCU processing circuit.
4. The light control circuit of claim 1, further comprising a constant current control circuit electrically connected to the control circuit and the filtered constant current circuit.
5. The light control circuit of claim 1, further comprising an LED load electrically connected to the de-strobing circuit.
6. The light control circuit of claim 1, wherein the single chip microcomputer of the MCU processing circuit is of a type Rb7F095ASF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311261499.7A CN117202442B (en) | 2023-09-27 | 2023-09-27 | Light control circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311261499.7A CN117202442B (en) | 2023-09-27 | 2023-09-27 | Light control circuit |
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| CN117202442A CN117202442A (en) | 2023-12-08 |
| CN117202442B true CN117202442B (en) | 2024-05-10 |
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| CN202311261499.7A Active CN117202442B (en) | 2023-09-27 | 2023-09-27 | Light control circuit |
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| CN209949480U (en) * | 2019-03-04 | 2020-01-14 | 深圳民爆光电股份有限公司 | Intelligent dimming LED driving device and LED lamp control system |
| CN110769559A (en) * | 2019-12-02 | 2020-02-07 | 深圳瓦特智汇科技有限公司 | Multi-interface compatible multiplexing communication, dimming and programming system |
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| CN205793482U (en) * | 2016-05-13 | 2016-12-07 | 浙江阳光美加照明有限公司 | A kind of zero-frequency dodges light modulation filament circuit for lamp |
| CN109195249A (en) * | 2018-09-04 | 2019-01-11 | 广东明丰电源电器实业有限公司 | It is a kind of based on silicon-controlled toggle switch circuit |
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| CN117202442A (en) | 2023-12-08 |
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