CN116997044A - Low-power consumption standby intelligent dimming control method - Google Patents

Low-power consumption standby intelligent dimming control method Download PDF

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Publication number
CN116997044A
CN116997044A CN202311264008.4A CN202311264008A CN116997044A CN 116997044 A CN116997044 A CN 116997044A CN 202311264008 A CN202311264008 A CN 202311264008A CN 116997044 A CN116997044 A CN 116997044A
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China
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protection
module
resistor
standby
intelligent dimming
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CN116997044B (en
Inventor
钟春林
陈晓
周孝亮
郑孙乾
范勇
叶界明
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Shenzhen Lifud Technology Co ltd
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Shenzhen Lifud Technology Co ltd
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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
    • 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]
    • H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
    • 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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/105—Controlling the light source in response to determined parameters

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  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

The invention discloses a low-power consumption standby intelligent dimming control method, which comprises the following steps: judging whether the intelligent dimming control system is in a standby state, and executing the following steps if the intelligent dimming control system is in the standby state: the control module sends a turn-off signal to the main power module to trigger a protection unit of the main power module; after the protection unit is triggered, the driving unit of the main power module is closed, and no driving signal is output. When the standby signal of the intelligent dimming system is received, the control circuit sends a turn-off signal to the main power to prompt the main power to enter an output overvoltage protection working state. At this time, the main power is no longer output to drive, effectively reducing the power consumption of the main power. In particular, it is more efficient for the main power control ic to build in the self-driving scheme.

Description

Low-power consumption standby intelligent dimming control method
Technical Field
The invention relates to the technical field of electronic circuits, in particular to a low-power consumption standby intelligent dimming control method.
Background
The LED driving power consumption mainly includes: APFC power factor correction, LED drive circuitry, auxiliary power. Since APFC power correction and LED driving circuit power consumption are larger than auxiliary power supply, power correction and LED driving circuit must be turned off during standby in order to reduce standby power consumption.
The conventional mode (as shown in fig. 2) adopts the mode of cutting off the power supply of the main power and closing the operation of the main power. This approach is relatively complex in circuitry and many devices. Moreover, for a built-in high voltage start-up circuit control IC, this approach cannot truly shut down the main power operation.
Disclosure of Invention
The invention provides a low-power consumption standby intelligent dimming control method, which aims to solve the problems in the prior art.
The invention provides a low-power consumption standby intelligent dimming control method, which comprises the following steps:
s100, judging whether the intelligent dimming control system is in a standby state, and executing step S200 if the intelligent dimming control system is in the standby state;
s200, the control module sends a turn-off signal to the main power module to trigger a protection unit of the main power module;
and S300, after the protection unit is triggered, the driving unit of the main power module is closed, and no driving signal is output.
Preferably, the S100 includes:
s101, a control module receives a control signal from an intelligent dimming control system;
s102, judging whether the received control signal is a standby signal sent by the intelligent dimming control system;
and S103, if the intelligent dimming control system is in the standby state, judging that the intelligent dimming control system is in the standby state.
Preferably, the S200 includes:
s201, the control module sends a turn-off signal to the main power module to enable the main power to enter an output overvoltage protection state;
s202, when the main power outputs an overvoltage protection state, the protection unit of the main power module is triggered.
Preferably, the step S202 includes:
s2021, the main power module includes: the APFC power factor correction module comprises a first protection unit and a DC/DC module, wherein the DC/DC module comprises a second protection unit;
s2022, the control module sends protection signals to the first protection unit and the second protection unit, and the first protection unit and the second protection unit are started to enter an output overvoltage protection state.
Preferably, in S2021, the first protection unit includes:
the positive electrode of the diode D5 is connected with an output control port of the control module, the negative electrode of the diode D5 is connected with one end of the resistor R10 and one end of the resistor R27, and the other end of the resistor R10 and the other end of the resistor R27 are respectively connected with two ends of the capacitor C7; the other end of the resistor R27 is connected with a first protection pin of a chip of the APFC power factor correction module;
after the control signal output by the output control port of the control module passes through the diode D5, the resistor R10, the resistor R27 and the capacitor C7, the chip of the APFC power factor correction module is connected based on the first protection pin, and then a protection function is formed.
Preferably, in S2021, the second protection unit includes:
resistor R16, diode D8, capacitor C13, resistor R14, diode D3, resistor R15 and capacitor C11;
the output control port of the control module is connected with one end of a resistor R16, the other end of the resistor R16 is connected with the positive electrode of a diode D8, the negative electrode of the diode D8 is connected with one end of a capacitor C13, and the other end of the capacitor C13 is grounded; the resistor R14 is connected with the capacitor C13 in parallel, the diode D3 is connected with the resistor R15 in series and then connected with the resistor R14 in parallel, and the cathode of the diode D3 is connected with the resistor R15 and then grounded; the anode of the diode D3 is connected with a second protection pin in the DC/DC module; one end of the capacitor C11 is grounded, and the other end of the capacitor C is connected with a second protection pin in the DC/DC module;
and after the control signal output by the output control port of the control module reaches the conducting voltage of the diode D8 through the resistor R16, a second protection pin in the DC/DC module is connected to form a protection function.
Preferably, when the first voltage received by the first protection pin of the APFC power factor correction module is greater than or equal to the first protection voltage, the driving pin of the APFC power factor correction module is turned off;
or when the second voltage received by the second protection pin of the DC/DC module is greater than or equal to the second protection voltage, the driving pin of the DC/DC module and the driving pin of the APFC power factor correction module are closed.
Preferably, the method further comprises:
dynamically setting a first protection voltage and a second protection voltage; forming a first protection voltage range and a second protection voltage range;
selecting a first protection voltage range and a second protection voltage range according to the low power consumption level;
and comparing the first voltage and the second voltage on the first protection pin and the second protection pin with the selected first protection voltage range and the second protection voltage range respectively, and determining whether the driving pin is closed or not.
Preferably, the selecting the first protection voltage range and the second protection voltage range according to the low power consumption level includes:
the higher the low power consumption level is, the smaller the standby power consumption is required, and the low power consumption level corresponds to the standby power consumption to form a first corresponding table;
determining a first protection voltage and a second protection voltage according to the required standby power consumption, and forming a second corresponding table of the standby power consumption and the first protection voltage and the second protection voltage;
and determining the corresponding relation between the low power consumption level and the protection voltage according to the data corresponding relation of the first corresponding table and the second corresponding table.
Preferably, when the intelligent dimming control system is in the standby state in the step S100, the judgment result is that the intelligent dimming control system is in the non-standby state, and the time of the next standby state of the intelligent dimming control system is predicted according to the intelligent control setting of the intelligent dimming control system, so as to obtain the state change prediction time;
according to the obtained state change prediction time, the control module enters a preprocessing mode before the state change prediction time;
in the preprocessing mode, the triggering condition of the protection unit triggering the main power module is determined, so that when the control module sends a turn-off signal to the main power module, the main power module is triggered by the determined triggering condition.
Compared with the prior art, the invention has the following advantages:
the invention provides a low-power consumption standby intelligent dimming control method, which comprises the following steps: judging whether the intelligent dimming control system is in a standby state, and executing the following steps if the intelligent dimming control system is in the standby state: the control module sends a turn-off signal to the main power module to trigger a protection unit of the main power module; after the protection unit is triggered, the driving unit of the main power module is closed, and no driving signal is output. When the standby signal of the intelligent dimming system is received, the control circuit sends a turn-off signal to the main power to prompt the main power to enter an output overvoltage protection working state. At this time, the main power is no longer output to drive, effectively reducing the power consumption of the main power. In particular, it is more efficient for the main power control ic to build in the self-driving scheme.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a flowchart of a low power standby intelligent dimming control method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a conventional standby mode according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a low-power standby intelligent dimming control method according to an embodiment of the present invention;
fig. 4 is a circuit diagram of a low-power standby intelligent dimming control method according to an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
The embodiment of the invention provides a low-power consumption standby intelligent dimming control method, referring to fig. 1, 3 and 4, comprising the following steps:
s100, judging whether the intelligent dimming control system is in a standby state, and executing step S200 if the intelligent dimming control system is in the standby state;
s200, the control module sends a turn-off signal to the main power module to trigger a protection unit of the main power module;
and S300, after the protection unit is triggered, the driving unit of the main power module is closed, and no driving signal is output.
The working principle and the beneficial effects of the technical scheme are as follows: the scheme adopted in the embodiment is that whether the intelligent dimming control system is in a standby state is judged first, and if the intelligent dimming control system is in the standby state, the steps are executed: the control module sends a turn-off signal to the main power module to trigger a protection unit of the main power module; after the protection unit is triggered, the driving unit of the main power module is closed, and no driving signal is output.
The invention provides a simple, reliable and stable control mode for reducing standby power consumption aiming at the problems. When the standby signal of the intelligent dimming system is received, the control circuit sends a turn-off signal to the main power to prompt the main power to enter an output overvoltage protection working state. At this time, the main power is no longer output to drive, effectively reducing the power consumption of the main power. In particular, it is more efficient for the main power control ic to build in the self-driving scheme.
Therefore, when the scheme provided by the embodiment is in standby, the control circuit sends a signal to the main power control chip to trigger the protection function of the main power control chip, so that the effect of reducing standby power consumption is achieved.
In another embodiment, the S100 includes:
s101, a control module receives a control signal from an intelligent dimming control system;
s102, judging whether the received control signal is a standby signal sent by the intelligent dimming control system;
and S103, if the intelligent dimming control system is in the standby state, judging that the intelligent dimming control system is in the standby state.
The working principle and the beneficial effects of the technical scheme are as follows: the scheme adopted in this embodiment is that the step of S100 of determining whether the intelligent dimming control system is in a standby state includes: s101, a control module receives a control signal from an intelligent dimming control system; s102, judging whether the received control signal is a standby signal sent by the intelligent dimming control system; and S103, if the intelligent dimming control system is in the standby state, judging that the intelligent dimming control system is in the standby state.
In another embodiment, the S200 includes:
s201, the control module sends a turn-off signal to the main power module to enable the main power to enter an output overvoltage protection state;
s202, when the main power outputs an overvoltage protection state, the protection unit of the main power module is triggered.
In another embodiment, the S202 includes:
s2021, the main power module includes: the APFC power factor correction module comprises a first protection unit and a DC/DC module, wherein the DC/DC module comprises a second protection unit;
s2022, the control module sends protection signals to the first protection unit and the second protection unit, and the first protection unit and the second protection unit are started to enter an output overvoltage protection state.
The working principle and the beneficial effects of the technical scheme are as follows: the scheme adopted in this embodiment is a main power control scheme: the APFC control chip adopts BP2636CA, the DC/DC adopts flyback topology structure, and the chip adopts BP3177DE. The signal input is the dali signal.
Since BP2636CA incorporates a high voltage drive circuit, BP2636CA may still be self-powered if the external Vcc circuit is cut off in a conventional manner. The measured standby power consumption is 0.62W, which exceeds the European ERP regulation by 0.5W.
In this embodiment, when the control module receives the dali signal of standby, it sends protection signals to the two master control ICs, so as to prompt the master control ICs to enter a protection working state, stop working, and reduce standby power consumption. Measured 0.46W, meets European ERP specifications.
The guard signal is preferably sent simultaneously to the main power chip BP3177DE. When in standby, the flyback module can be thoroughly turned off, so that the power consumption is reduced. Meanwhile, the chip is prevented from entering a short-circuit protection state, and when the voltage drop of an output load LED is low, afterglow is prevented.
Here, with the overvoltage protection pins (FB pins) of BP2636CA and BP3177DE, when the FB pin receives a voltage higher than its protection voltage, BP2636CA and BP3177DE drive pins are turned off.
In another embodiment, referring to fig. 4, in S2021, the first protection unit includes:
the positive electrode of the diode D5 is connected with an output control port of the control module, the negative electrode of the diode D5 is connected with one end of the resistor R10 and one end of the resistor R27, and the other end of the resistor R10 and the other end of the resistor R27 are respectively connected with two ends of the capacitor C7; the other end of the resistor R27 is connected with a first protection pin of a chip of the APFC power factor correction module;
after the control signal output by the output control port of the control module passes through the diode D5, the resistor R10, the resistor R27 and the capacitor C7, the chip of the APFC power factor correction module is connected based on the first protection pin, and then a protection function is formed.
The working principle and the beneficial effects of the technical scheme are as follows: in the solution adopted in this embodiment, in S2021, the first protection unit includes: the positive electrode of the diode D5 is connected with an output control port of the control module, the negative electrode of the diode D5 is connected with one end of the resistor R10 and one end of the resistor R27, and the other end of the resistor R10 and the other end of the resistor R27 are respectively connected with two ends of the capacitor C7; the other end of the resistor R27 is connected with a first protection pin of a chip of the APFC power factor correction module; after the control signal output by the output control port of the control module passes through the diode D5, the resistor R10, the resistor R27 and the capacitor C7, the chip of the APFC power factor correction module is connected based on the first protection pin, and then a protection function is formed.
In another embodiment, in S2021, the second protection unit includes:
resistor R16, diode D8, capacitor C13, resistor R14, diode D3, resistor R15 and capacitor C11;
the output control port of the control module is connected with one end of a resistor R16, the other end of the resistor R16 is connected with the positive electrode of a diode D8, the negative electrode of the diode D8 is connected with one end of a capacitor C13, and the other end of the capacitor C13 is grounded; the resistor R14 is connected with the capacitor C13 in parallel, the diode D3 is connected with the resistor R15 in series and then connected with the resistor R14 in parallel, and the cathode of the diode D3 is connected with the resistor R15 and then grounded; the anode of the diode D3 is connected with a second protection pin in the DC/DC module; one end of the capacitor C11 is grounded, and the other end of the capacitor C is connected with a second protection pin in the DC/DC module;
and after the control signal output by the output control port of the control module reaches the conducting voltage of the diode D8 through the resistor R16, a second protection pin in the DC/DC module is connected to form a protection function.
The working principle and the beneficial effects of the technical scheme are as follows: in the solution adopted in this embodiment, in S2021, the second protection unit includes: resistor R16, diode D8, capacitor C13, resistor R14, diode D3, resistor R15 and capacitor C11; the output control port of the control module is connected with one end of a resistor R16, the other end of the resistor R16 is connected with the positive electrode of a diode D8, the negative electrode of the diode D8 is connected with one end of a capacitor C13, and the other end of the capacitor C13 is grounded; the resistor R14 is connected with the capacitor C13 in parallel, the diode D3 is connected with the resistor R15 in series and then connected with the resistor R14 in parallel, and the cathode of the diode D3 is connected with the resistor R15 and then grounded; the anode of the diode D3 is connected with a second protection pin in the DC/DC module; one end of the capacitor C11 is grounded, and the other end of the capacitor C is connected with a second protection pin in the DC/DC module; and after the control signal output by the output control port of the control module reaches the conducting voltage of the diode D8 through the resistor R16, a second protection pin in the DC/DC module is connected to form a protection function.
In another embodiment, when the first voltage received by the first protection pin of the APFC power factor correction module is greater than or equal to the first protection voltage, the driving pin of the APFC power factor correction module is turned off;
or when the second voltage received by the second protection pin of the DC/DC module is greater than or equal to the second protection voltage, the driving pin of the DC/DC module and the driving pin of the APFC power factor correction module are closed.
The working principle and the beneficial effects of the technical scheme are as follows: the scheme adopted by the embodiment is that when a first voltage received by a first protection pin of the APFC power factor correction module is greater than or equal to a first protection voltage, a driving pin of the APFC power factor correction module is closed; or when the second voltage received by the second protection pin of the DC/DC module is greater than or equal to the second protection voltage, the driving pin of the DC/DC module and the driving pin of the APFC power factor correction module are closed.
In another embodiment, the method further comprises:
dynamically setting a first protection voltage and a second protection voltage; forming a first protection voltage range and a second protection voltage range;
selecting a first protection voltage range and a second protection voltage range according to the low power consumption level;
and comparing the first voltage and the second voltage on the first protection pin and the second protection pin with the selected first protection voltage range and the second protection voltage range respectively, and determining whether the driving pin is closed or not.
The working principle and the beneficial effects of the technical scheme are as follows: the scheme adopted by the embodiment further comprises: dynamically setting a first protection voltage and a second protection voltage; forming a first protection voltage range and a second protection voltage range; selecting a first protection voltage range and a second protection voltage range according to the low power consumption level; and comparing the first voltage and the second voltage on the first protection pin and the second protection pin with the selected first protection voltage range and the second protection voltage range respectively, and determining whether the driving pin is closed or not. The low-power consumption setting is conveniently carried out according to actual conditions by setting the range of dynamic protection voltage, and the method is suitable for different application scenes.
In another embodiment, the selecting the first protection voltage range and the second protection voltage range according to the low power consumption level includes:
the higher the low power consumption level is, the smaller the standby power consumption is required, and the low power consumption level corresponds to the standby power consumption to form a first corresponding table;
determining a first protection voltage and a second protection voltage according to the required standby power consumption, and forming a second corresponding table of the standby power consumption and the first protection voltage and the second protection voltage;
and determining the corresponding relation between the low power consumption level and the protection voltage according to the data corresponding relation of the first corresponding table and the second corresponding table.
The working principle and the beneficial effects of the technical scheme are as follows: the scheme adopted in this embodiment is that the selecting the first protection voltage range and the second protection voltage range according to the low power consumption level includes: the higher the low power consumption level is, the smaller the standby power consumption is required, and the low power consumption level corresponds to the standby power consumption to form a first corresponding table; determining a first protection voltage and a second protection voltage according to the required standby power consumption, and forming a second corresponding table of the standby power consumption and the first protection voltage and the second protection voltage; and determining the corresponding relation between the low power consumption level and the protection voltage according to the data corresponding relation of the first corresponding table and the second corresponding table.
In another embodiment, when it is determined in step S100 whether the intelligent dimming control system is in a standby state, the determination result is that the intelligent dimming control system is in a non-standby state, and the time of the next standby state of the intelligent dimming control system is predicted according to the intelligent control setting of the intelligent dimming control system, so as to obtain a state change prediction time;
according to the obtained state change prediction time, the control module enters a preprocessing mode before the state change prediction time;
in the preprocessing mode, the triggering condition of the protection unit triggering the main power module is determined, so that when the control module sends a turn-off signal to the main power module, the main power module is triggered by the determined triggering condition.
The working principle and the beneficial effects of the technical scheme are as follows: the scheme adopted by the embodiment further comprises that when judging whether the intelligent dimming control system is in a standby state in the step S100, the judging result is in a non-standby state, and the time of the next standby state of the intelligent dimming control system is predicted according to the intelligent control setting of the intelligent dimming control system to obtain state change prediction time; according to the obtained state change prediction time, the control module enters a preprocessing mode before the state change prediction time; in the preprocessing mode, the triggering condition of the protection unit triggering the main power module is determined, so that when the control module sends a turn-off signal to the main power module, the main power module is triggered by the determined triggering condition.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (10)

1. The low-power consumption standby intelligent dimming control method is characterized by comprising the following steps of:
s100, judging whether the intelligent dimming control system is in a standby state, and executing step S200 if the intelligent dimming control system is in the standby state;
s200, the control module sends a turn-off signal to the main power module to trigger a protection unit of the main power module;
and S300, after the protection unit is triggered, the driving unit of the main power module is closed, and no driving signal is output.
2. The low power consumption standby intelligent dimming control method according to claim 1, wherein the step S100 comprises:
s101, a control module receives a control signal from an intelligent dimming control system;
s102, judging whether the received control signal is a standby signal sent by the intelligent dimming control system;
and S103, if the intelligent dimming control system is in the standby state, judging that the intelligent dimming control system is in the standby state.
3. The low power consumption standby intelligent dimming control method according to claim 1, wherein S200 comprises:
s201, the control module sends a turn-off signal to the main power module to enable the main power to enter an output overvoltage protection state;
s202, when the main power outputs an overvoltage protection state, the protection unit of the main power module is triggered.
4. A low power consumption standby intelligent dimming control method as claimed in claim 3, wherein S202 comprises:
s2021, the main power module includes: the APFC power factor correction module comprises a first protection unit and a DC/DC module, wherein the DC/DC module comprises a second protection unit;
s2022, the control module sends protection signals to the first protection unit and the second protection unit, and the first protection unit and the second protection unit are started to enter an output overvoltage protection state.
5. The method of claim 4, wherein in S2021, the first protection unit includes:
the positive electrode of the diode D5 is connected with an output control port of the control module, the negative electrode of the diode D5 is connected with one end of the resistor R10 and one end of the resistor R27, and the other end of the resistor R10 and the other end of the resistor R27 are respectively connected with two ends of the capacitor C7; the other end of the resistor R27 is connected with a first protection pin of a chip of the APFC power factor correction module;
after the control signal output by the output control port of the control module passes through the diode D5, the resistor R10, the resistor R27 and the capacitor C7, the chip of the APFC power factor correction module is connected based on the first protection pin, and then a protection function is formed.
6. The method of claim 4, wherein in S2021, the second protection unit includes:
resistor R16, diode D8, capacitor C13, resistor R14, diode D3, resistor R15 and capacitor C11;
the output control port of the control module is connected with one end of a resistor R16, the other end of the resistor R16 is connected with the positive electrode of a diode D8, the negative electrode of the diode D8 is connected with one end of a capacitor C13, and the other end of the capacitor C13 is grounded; the resistor R14 is connected with the capacitor C13 in parallel, the diode D3 is connected with the resistor R15 in series and then connected with the resistor R14 in parallel, and the cathode of the diode D3 is connected with the resistor R15 and then grounded; the anode of the diode D3 is connected with a second protection pin in the DC/DC module; one end of the capacitor C11 is grounded, and the other end of the capacitor C is connected with a second protection pin in the DC/DC module;
and after the control signal output by the output control port of the control module reaches the conducting voltage of the diode D8 through the resistor R16, a second protection pin in the DC/DC module is connected to form a protection function.
7. The method for controlling low-power standby intelligent dimming according to claim 4, wherein the driving pin of the APFC power factor correction module is turned off when the first voltage received by the first protection pin of the APFC power factor correction module is greater than or equal to the first protection voltage;
or when the second voltage received by the second protection pin of the DC/DC module is greater than or equal to the second protection voltage, the driving pin of the DC/DC module and the driving pin of the APFC power factor correction module are closed.
8. The low power standby intelligent dimming control method as claimed in claim 7, further comprising:
dynamically setting a first protection voltage and a second protection voltage; forming a first protection voltage range and a second protection voltage range;
selecting a first protection voltage range and a second protection voltage range according to the low power consumption level;
and comparing the first voltage and the second voltage on the first protection pin and the second protection pin with the selected first protection voltage range and the second protection voltage range respectively, and determining whether the driving pin is closed or not.
9. The method for controlling low power standby intelligent dimming according to claim 8, wherein the selecting the first protection voltage range and the second protection voltage range according to the low power consumption level comprises:
the higher the low power consumption level is, the smaller the standby power consumption is required, and the low power consumption level corresponds to the standby power consumption to form a first corresponding table;
determining a first protection voltage and a second protection voltage according to the required standby power consumption, and forming a second corresponding table of the standby power consumption and the first protection voltage and the second protection voltage;
and determining the corresponding relation between the low power consumption level and the protection voltage according to the data corresponding relation of the first corresponding table and the second corresponding table.
10. The method of claim 1, further comprising, when it is determined in step S100 that the intelligent dimming control system is in a standby state, determining that the intelligent dimming control system is in a non-standby state, predicting a time when the intelligent dimming control system is in a standby state next time according to an intelligent control setting of the intelligent dimming control system, and obtaining a state change prediction time;
according to the obtained state change prediction time, the control module enters a preprocessing mode before the state change prediction time;
in the preprocessing mode, the triggering condition of the protection unit triggering the main power module is determined, so that when the control module sends a turn-off signal to the main power module, the main power module is triggered by the determined triggering condition.
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