CN213662004U - Light control system - Google Patents
Light control system Download PDFInfo
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- CN213662004U CN213662004U CN202022143873.1U CN202022143873U CN213662004U CN 213662004 U CN213662004 U CN 213662004U CN 202022143873 U CN202022143873 U CN 202022143873U CN 213662004 U CN213662004 U CN 213662004U
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Abstract
The utility model is suitable for a LED lighting technology field provides a light control system, include: the first input end of the internal control module and the first input end of the switch power supply control module are connected with the external control switch respectively and then are connected with the power supply, the second input end of the internal control module is connected with the external signal input module, the first output end of the internal control module is connected with the second input end of the switch power supply control module, the second output end of the internal control module is connected with the second input end of the conversion module, and the third output end of the internal control module is connected with the first output end of the conversion module; the first output end of the switching power supply control module is connected with the first input end of the conversion module; the first output end of the conversion module is connected with the positive end of the LED lamp group module, and the second output end to the Nth output end of the conversion module are respectively connected with the negative end of each LED lamp in the LED lamp group module, so that continuous dimming and free color mixing of the LED lamp group module are realized through different controls.
Description
Technical Field
The utility model belongs to the technical field of the LED illumination, especially, relate to a light control system.
Background
The LED lamp meets application scenes of different requirements and different color temperature environments, at present, a plurality of different color temperature switching methods exist for the LED lamp, for example, the color temperature is switched by mechanical dial control, but the requirements of the whole lamp on photoelectric parameter standards are difficult to realize, and the color temperature for switching is limited. Although the silicon controlled dimmer capable of continuously dimming can simultaneously dim and color-adjust, the two functions are integrated, and the output of one dimmer can mutually influence the dimming and color-adjusting.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides a light control system to solve among the prior art problem that the LED lamp can't satisfy continuous dimming and freely mix colours simultaneously.
The embodiment of the utility model provides a first aspect provides a light control system, include: the LED lamp set comprises an internal control module, an external signal input module, a switching power supply control module, a conversion module and an LED lamp set module;
a first input end of the internal control module and a first input end of the switch power supply control module are respectively connected with an external control switch and then connected with a power supply, a second input end of the internal control module is connected with the external signal input module, a first output end of the internal control module is connected with a second input end of the switch power supply control module, a second output end of the internal control module is connected with a second input end of the conversion module, and a third output end of the internal control module is connected with a first output end of the conversion module;
the first output end of the switching power supply control module is connected with the first input end of the conversion module;
the first output end of the conversion module is connected with the positive end of the LED lamp group module, the second output end to the Nth output end of the conversion module are respectively connected with the negative end of each LED lamp in the LED lamp group module, and N is a positive integer greater than or equal to 1.
In one embodiment, the external signal input module comprises a three-position switch.
In one embodiment, the internal control module comprises: the circuit comprises a resistor R1, a resistor R2, a triode Q1, a voltage regulator tube D1, a capacitor C1, a capacitor C2 and a first control chip;
a collector of the triode Q1 is respectively connected with one end of the resistor R1, one end of the resistor R2 and one end of the capacitor C1, a base of the triode Q1 is respectively connected with the other end of the resistor R2 and a cathode end of the voltage regulator D1, and an emitter of the triode Q1 is connected with one end of the capacitor C2 and then connected with a digital signal power supply end of the first control chip;
the other end of the resistor R1 is a third output end of the internal control module;
the other end of the capacitor C1, the anode end of the voltage regulator tube D1 and the other end of the capacitor C2 are respectively grounded;
the digital power supply ground terminal ground connection of first control chip, the eighth input or the output of first control chip do inside control module's first input, the seventh input or the output of first control chip with the sixth input or the output of first control chip connects respectively second contact and third contact in the third gear switch, the first input or the output of first control chip do inside control module's first output, the second input or the output of first control chip with the third input or the output of first control chip does inside control module's second output.
In one embodiment, the internal control module further comprises: a resistor R3, a resistor R4, a capacitor C3 and a voltage regulator tube D2;
one end of the resistor R3 is connected with the resistor R4 and then grounded, and the other end of the resistor R3 is a first input end of the internal control module;
one end of the capacitor C3 is connected to a connecting line between the resistor R3 and the resistor R4, and the other end of the capacitor C3 is grounded;
the anode end of the voltage regulator tube D2 is grounded, and the cathode end of the voltage regulator tube D2 is respectively connected to the connecting line between the resistor R3 and the resistor R4 and the eighth input or output end of the first control chip.
In one embodiment, the switching power supply control module includes: the second control chip, a capacitor C4 and a resistor R5;
the brightness adjusting end of the second control chip is a second input end of the switching power supply control module, and an analog signal power supply end of the second control chip is connected with the capacitor C4 and then grounded; the high-voltage terminal of the second control chip is the first input terminal of the switch power supply control module, the signal output terminal of the second control chip is the second output terminal of the switch power supply control module, the enabling terminal of the second control chip is connected with the ground after being connected with the resistor R5, and the analog signal ground terminal of the second control chip is connected with the ground.
In one embodiment, the switching power supply control module further includes: a capacitor C5 and a resistor R6;
one end of the capacitor C5 and one end of the resistor R6 are respectively connected with the brightness adjusting end of the second control chip, and the other end of the capacitor C5 and the other end of the resistor R6 are grounded.
In one embodiment, the conversion module comprises: the LED driving circuit comprises a diode D3, a diode D4, an inductor L1, a voltage regulator tube D5, a resistor R7, a resistor R8, a capacitor C6, a capacitor C7 and a transistor group;
the anode of the diode D3 is a first input end of the conversion module, the cathode of the diode D3 is connected to the cathode of the diode D4, the cathode of the voltage regulator tube D5, one end of the resistor R7 and one end of the capacitor C6 respectively and then is a first output end of the conversion module, the anode of the diode D4 is a second input end of the conversion module, one end of the inductor L1 is connected to the anode of the diode D4, the other end of the inductor L1 is connected to the anode of the voltage regulator tube D5, the other end of the resistor R7 and the other end of the capacitor C6 respectively and then is connected to the gate of each transistor in the transistor group and the source of each transistor;
one end of the capacitor C7 is connected between the other end of the inductor L1 and the anode of the voltage regulator tube D5, and the other end of the capacitor C7 is connected with the resistor R8 and then grounded;
and the grid electrode of each transistor in the transistor group is also respectively connected with the second output end of the internal control module and the first output end of the conversion module, and the drain of each transistor in the transistor group is respectively used as the second output end to the Nth output end of the conversion module.
In one embodiment, the conversion module further comprises: a resistor R9 and a resistor R10;
a resistor R9 is also connected between the gate of each transistor and the first output end of the conversion module, and a resistor R10 is also connected between the gate of each transistor and the other end of the inductor L1.
In one embodiment, the light control system further comprises: the device comprises a rectifying module, a filtering module and a protection module;
the input end of the rectification module is connected with an alternating current power supply after the external control switch, the positive output end of the rectification module is connected with the first end of the protection module and the input end of the filtering module respectively, the negative output end of the rectification module is connected with the second end of the protection module and then connected with the input end of the filtering module, the first output end of the filtering module is connected with the first input end of the internal control module and the first input end of the switching power supply control module respectively, and the second output end of the filtering module is connected with the third end of the protection module and then grounded.
In one embodiment, the protection module comprises: the protection circuit comprises an anti-electric shock leakage protection chip, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a capacitor C8 and a diode D6;
the voltage detection end of the electric shock prevention leakage protection chip is connected with one end of the resistor R12 after being connected with the resistor R13 in series, the other end of the resistor R12 is connected with the drain end of the internal high-voltage power tube of the electric shock prevention leakage protection chip and then is connected with the third end of the protection module, the grounding end of the electric shock prevention leakage protection chip is respectively connected with the second end of the protection module and one end of the resistor R14, the other end of the resistor R14 is connected between the resistor R12 and the resistor R13, the analog signal power end of the electric shock prevention leakage protection chip is connected between the resistor R11 and the capacitor C18, the other end of the resistor R11 is connected with the first end of the protection module, the other end of the capacitor C18 is connected with the second end of the protection module, the analog signal ground end of the electric shock prevention leakage protection chip is connected with one end of the resistor R15 and the second end of the cathode end of the diode D6 and then, and the inductance peak current detection end of the electric shock leakage protection chip is connected with the other end of the resistor R15 and the anode end of the diode D6.
Compared with the prior art, the embodiment of the utility model beneficial effect who exists is: the embodiment of the utility model provides a, through the opening and shutting off of external control switch power control module and internal control module, when the external control switch was opened, the internal control module circular telegram, output PWM signal for switching power control module, switching power control module internal logic control exports different electric currents, realizes the dimming function to LED banks module; the external signal input module is used for controlling the internal control module to output PWM signals with different duty ratios so as to control the switching of the conversion module, realize that the conversion module outputs currents with different proportions, match different color temperatures and realize color mixing of different LED lamps in the LED lamp bank module, so that the light control system simultaneously meets the problems of continuous dimming and free color mixing.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic view of a light control system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an external signal input module according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an internal control module provided by an embodiment of the present invention;
fig. 4 is a schematic diagram of a switching power supply control module according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a conversion module according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a rectifying module, a filtering module and a protection module provided in an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In order to explain the technical solution of the present invention, the following description is made by using specific examples.
Example one
Fig. 1 is the utility model provides a pair of light control system's schematic diagram, including internal control module 1, external signal input module 2, switching power supply control module 3, conversion module 4 and LED banks module 5.
A first input end of the internal control module 1 and a first input end of the switch power supply control module 3 are respectively connected with an external control switch and then connected with a power supply, a second input end of the internal control module 1 is connected with the external signal input module 2, a first output end of the internal control module 1 is connected with a second input end of the switch power supply control module 3, a second output end of the internal control module 1 is connected with a second input end of the conversion module 4, and a third output end of the internal control module 1 is connected with a first output end of the conversion module 4;
a first output end of the switching power supply control module 3 is connected with a first input end of the conversion module 4;
the first output end of the conversion module 4 is connected with the positive end of the LED lamp group module 5, the second output end to the Nth output end of the conversion module 4 are respectively connected with the negative end of each LED lamp in the LED lamp group module 5, and N is a positive integer greater than or equal to 1.
According to the light control system, the switch power supply control module and the internal control module are controlled to be turned on and off through the external control switch, when the external control switch is turned on, the internal control module is electrified and outputs PWM (pulse width modulation) signals to the switch power supply control module, and the switch power supply control module is internally controlled by logic to output different currents, so that the dimming function of the LED lamp group module is realized; the external signal input module is used for controlling the internal control module to output PWM signals with different duty ratios so as to control the switching of the conversion module, realize that the conversion module outputs currents with different proportions, match different color temperatures and realize color mixing of different LED lamps in the LED lamp bank module, so that the light control system simultaneously meets the problems of continuous dimming and free color mixing.
Optionally, the external signal input module 2 includes a three-position switch, as shown in the schematic diagram of the external signal input module shown in fig. 2, three contacts of the three-position switch are TS1, TS2, and TS3, respectively, and the other end of the three-position switch is grounded.
Alternatively, as shown in fig. 3, the internal control module 1 may include: the circuit comprises a resistor R1, a resistor R2, a triode Q1, a voltage regulator tube D1, a capacitor C1, a capacitor C2 and a first control chip;
a collector of the triode Q1 is respectively connected with one end of the resistor R1, one end of the resistor R2 and one end of the capacitor C1, a base of the triode Q1 is respectively connected with the other end of the resistor R2 and a cathode end of the voltage regulator tube D1, and an emitter of the triode Q1 is connected with one end of the capacitor C2 and then connected with a digital signal power supply VDD end of the first control chip;
optionally, the capacitor C2 may also be formed by two capacitors connected in parallel.
The other end of the resistor R1 is a third output end of the internal control module; alternatively, the third output terminal is represented by LED + in fig. 3, i.e. for connecting the anode of the LED lamp.
The other end of the capacitor C1, the anode end of the voltage regulator tube D1 and the other end of the capacitor C2 are respectively grounded;
the digital power supply ground VSS end of the first control chip is grounded, the eighth input or output PA7 end of the first control chip is the first input end of the internal control module, the seventh input or output PA6 end of the first control chip and the sixth input or output PA5 end of the first control chip are respectively connected with the second contact and the third contact in the third-gear switch, namely, the seventh input or output end of the first control chip is connected with the TS2 contact of the third-gear switch, and the sixth input or output end of the first control chip is connected with the TS3 contact of the third-gear switch.
A first input or output PA0 terminal of the first control chip is a first output terminal of the internal control module, and optionally, the first output terminal of the internal control module is used for outputting a PWM signal.
The second input or output PA2 end of the first control chip and the third input or output end of the first control chip are the second output end of the internal control module. Optionally, when the LED lamp set module includes two strings of light emitting diodes connected in series, the second input or output end of the first control chip and the third input or output end of the first control chip are connected to one string of light emitting diodes in the LED lamp set module, respectively.
Optionally, as shown in fig. 3, the internal control module 1 may further include a power down detection circuit, where the power down detection circuit may include: a resistor R3, a resistor R4, a capacitor C3 and a voltage regulator tube D2;
one end of the resistor R3 is connected with the resistor R4 and then grounded, and the other end of the resistor R3 is a first input end of the internal control module; alternatively, the resistor R3 may be two resistors connected in series to achieve a desired resistance.
One end of the capacitor C3 is connected to a connecting line between the resistor R3 and the resistor R4, and the other end of the capacitor C3 is grounded;
the anode end of the voltage regulator tube D2 is grounded, and the cathode end of the voltage regulator tube D2 is respectively connected to the connecting line between the resistor R3 and the resistor R4 and the eighth input or output end of the first control chip.
Optionally, as shown in fig. 4, the switching power supply control module 3 may include: the second control chip, a capacitor C4 and a resistor R5;
the brightness adjusting DIM end of the second control chip is a second input end of the switching power supply control module, is connected with the first input or output PA0 end of the first control chip, and is used for receiving the PWM signal output by the first control chip.
And the analog signal power supply VCC end of the second control chip is connected with the capacitor C4 and then is grounded.
And the high-voltage HV end of the second control chip is a first input end of the switch power supply control module, is connected with one end of a resistor R3 in the power failure detection circuit and is used for being connected with a power supply.
And the signal output DRAIN end of the second control chip is a first output end of the switching power supply control module and is connected with a first input end of the conversion module.
The enable CS end of the second control chip is grounded after being connected with the resistor R5, and the analog signal ground GND end of the second control chip is grounded. Alternatively, the resistor R5 may be formed by two resistors connected in parallel.
Optionally, as shown in fig. 4, the switching power supply control module 3 may further include: a capacitor C5 and a resistor R6;
one end of the capacitor C5 and one end of the resistor R6 are respectively connected with the brightness adjusting end of the second control chip, and the other end of the capacitor C5 and the other end of the resistor R6 are grounded.
Optionally, as shown in fig. 5, the conversion module 4 may include: the LED driving circuit comprises a diode D3, a diode D4, an inductor L1, a voltage regulator tube D5, a resistor R7, a resistor R8, a capacitor C6, a capacitor C7 and a transistor group; note that the transistor group in fig. 5 includes two transistors Q2 and Q3.
The anode of the diode D3 is a first input end of the conversion module and is connected to a power supply, the cathode of the diode D3 is respectively connected to the cathode of the diode D4, the cathode of the voltage regulator tube D5, one end of the resistor R7 and one end of the capacitor C6 and then is a first output end of the conversion module, and the first output end is represented by an LED + in fig. 5 and is used for connecting the anodes of the LED lamps in the LED lamp set module.
The anode of the diode D4 is a second input end of the conversion module, one end of the inductor L1 is connected to the anode of the diode D4, and the other end of the inductor L1 is connected to the anode of the voltage regulator tube D5, the other end of the resistor R7, and the other end of the capacitor C6, and then is connected to the gate of each transistor in the transistor group and the source of each transistor; in fig. 5, the gates and sources of the transistor Q2 and the transistor Q3 are connected.
One end of the capacitor C7 is connected between the other end of the inductor L1 and the anode of the voltage regulator tube D5, and the other end of the capacitor C7 is connected with the resistor R8 and then grounded.
And the grid electrode of each transistor in the transistor group is also respectively connected with the second output end of the internal control module and the first output end of the conversion module, and the drain of each transistor in the transistor group is respectively used as the second output end to the Nth output end of the conversion module. In fig. 5, the gate of the transistor Q2 is connected to the third input or output terminal of the first controller chip, and the gate of the transistor Q3 is connected to the second input or output terminal of the first controller chip.
Optionally, as shown in fig. 5, the conversion module 4 may further include: a resistor R9 and a resistor R10;
a resistor R9 is also connected between the gate of each transistor and the first output end of the conversion module, and a resistor R10 is also connected between the gate of each transistor and the other end of the inductor L1. In fig. 5, the gate of the transistor Q2 is connected to the LED + terminal after being connected to the resistor R9, and the gate of the transistor Q2 is connected to the LED-terminal after being connected to the resistor R10.
Alternatively, each transistor in the transistor group may be a MOS transistor.
Alternatively, as shown in fig. 6, the LED lamp set module 5 may include two strings of light emitting diodes connected in series, an anode of each string of light emitting diodes is connected to the first output terminal of the conversion module, and a cathode of each string of light emitting diodes is connected to a drain of the corresponding transistor.
Optionally, as shown in fig. 6, the light control system further includes: the device comprises a rectifying module 6, a filtering module 7 and a protection module 8;
the input of rectifier module 6 is connected connect alternating current power supply behind the external control switch, rectifier module 6's positive output is connected respectively protection module 8's first end with filtering module 7's input, rectifier module 6's negative pole output is connected connect behind protection module 8's the second end filtering module 7's input, filtering module 7's first output is connected respectively internal control module 1's first input with switching power supply control module 3's first input, filtering module 7's second output is connected ground connection behind protection module 8's the third end.
Optionally, the rectifying module 6 is configured to convert an ac power into a dc power, the filtering module is configured to filter the dc power, and the filtered dc power is input to the switching power supply control module, the internal control module, and the converting module, respectively.
Alternatively, as shown in fig. 6, P1, P2 and P3 are PIN PINs of a T8 lamp holder, and other products can be applied, so that only P1 and P2 are required to serve as L lines and N lines. Wherein P4 is suspended.
The ends P1 and P3 are connected with a fuse resistor or a fuse respectively to prevent the circuit from being burnt out due to excessive current. F1 is a temperature fuse, which can be used in T8 type B lamp tube to prevent the temperature control protective device from igniting due to misconnection with type A electronic ballast, and other lamp types may not be needed.
Optionally, as shown in fig. 6, P1 is connected to fuse resistor FR1 and then connected to one end of rectifier bridge and capacitor CX2, P2 is connected to one end of capacitor CX1 and then connected to the rectifier bridge, P3 is connected to fuse resistor FR2 and then connected to temperature fuse F1 and then connected to the other end of capacitor CX2, the other end of capacitor CX1 and the anode of diode D7 and the cathode of diode D8, the positive output end of the rectifier bridge is connected to the cathode of diode D7 and one end of TVS tube RT1 and then serves as the output end of rectifier module 6, and the negative output end of the rectifier bridge is connected to the positive end of diode D8 and the other end of TVS tube RV 1. TVS tube RV1 is used to absorb surges. It should be noted that the positive output end of the rectifier bridge is connected to the first end of the protection module 8, and the negative output end of the rectifier bridge is connected to the second end of the protection module 8.
The output end of the rectifying module 6 is connected to one end of an inductor L2, one end of a resistor R16, and one end of a capacitor C9, respectively, and the other end of the inductor L2 is a first output end of the filtering module 7. The other end of the resistor R16 is connected between the inductor L2 and the capacitor C10, and the other end of the capacitor C10 and the other end of the capacitor C9 are second output ends of the filter module 7.
Optionally, as shown in fig. 6, the protection module 8 may include: the protection circuit comprises an anti-electric shock leakage protection chip, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a capacitor C8 and a diode D6;
the voltage detection VS end of the electric shock leakage protection chip is connected with one end of the resistor R12 after being connected with the resistor R13 in series, the other end of the resistor R12 is connected with the drain end of the internal high-voltage power tube of the electric shock leakage protection chip and then connected with the third end of the protection module, the ground-contacting TRG end of the electric shock leakage protection chip is respectively connected with the second end of the protection module and one end of the resistor R14, the other end of the resistor R14 is connected between the resistor R12 and the resistor R13, the analog signal power end of the electric shock leakage protection chip is connected between the resistor R11 and the capacitor C18, the other end of the resistor R11 is connected with the first end of the protection module, the other end of the capacitor C18 is connected with the second end of the protection module, the analog signal ground end of the electric shock leakage protection chip is connected with one end of the resistor R15 and the second end of the cathode end of the diode D6 and then connected with the second end, and the inductance peak current detection end of the electric shock leakage protection chip is connected with the other end of the resistor R15 and the anode end of the diode D6.
Alternatively, in fig. 6, the first end of the protection module 8 is denoted by #1, the second end is denoted by #2, and the third end is denoted by #3, where #1, #2, #3 are connected in fig. 6.
Alternatively, an external control switch may be connected before the rectifier module 6.
The light control system provides voltage for the power failure detection circuit through the external control switch, is connected with the first control chip through the VS port, and at the moment, the first control chip outputs PWM signals through the first input or output end, namely, continuously rising high levels (the high levels have upper and lower limit values), then the first control chip detects the duration time of the VS port voltage and records the PWM signals corresponding to the output time, if the external control switch is started for the next time within the preset time, the first control chip outputs the last recorded PWM signals, otherwise, the light control system detects again, and the first control chip outputs corresponding PWM signals. Corresponding PWM signals are input through a DIM end of the second control chip, then the internal logic of the second control chip controls and detects output current, and the LED lamp group module is enabled to output different currents in a constant-current mode through the conversion module, so that dimming of the LED lamp group module is achieved. Three states TS1, TS2 and TS3 of a three-gear switch included by the external signal input module are connected with a seventh input or output end and a sixth input or output end of the first control chip, so that three PWM signals with different duty ratios can be output by the second input or output end and the third input or output end in the initial state of the first control chip to control the switch of each transistor in the conversion module, and currents with different proportions are output to the LED lamp group module, so that different color temperatures are proportioned, and the color mixing function is realized.
The above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. A light control system, comprising: the LED lamp set comprises an internal control module, an external signal input module, a switching power supply control module, a conversion module and an LED lamp set module;
a first input end of the internal control module and a first input end of the switch power supply control module are respectively connected with an external control switch and then connected with a power supply, a second input end of the internal control module is connected with the external signal input module, a first output end of the internal control module is connected with a second input end of the switch power supply control module, a second output end of the internal control module is connected with a second input end of the conversion module, and a third output end of the internal control module is connected with a first output end of the conversion module;
the first output end of the switching power supply control module is connected with the first input end of the conversion module;
the first output end of the conversion module is connected with the positive end of the LED lamp group module, the second output end to the Nth output end of the conversion module are respectively connected with the negative end of each LED lamp in the LED lamp group module, and N is a positive integer greater than or equal to 1.
2. The light control system of claim 1, wherein the external signal input module comprises a three-position switch.
3. The light control system of claim 2, wherein the internal control module comprises: the circuit comprises a resistor R1, a resistor R2, a triode Q1, a voltage regulator tube D1, a capacitor C1, a capacitor C2 and a first control chip;
a collector of the triode Q1 is respectively connected with one end of the resistor R1, one end of the resistor R2 and one end of the capacitor C1, a base of the triode Q1 is respectively connected with the other end of the resistor R2 and a cathode end of the voltage regulator D1, and an emitter of the triode Q1 is connected with one end of the capacitor C2 and then connected with a digital signal power supply end of the first control chip;
the other end of the resistor R1 is a third output end of the internal control module;
the other end of the capacitor C1, the anode end of the voltage regulator tube D1 and the other end of the capacitor C2 are respectively grounded;
the digital power supply ground terminal ground connection of first control chip, the eighth input or the output of first control chip do inside control module's first input, the seventh input or the output of first control chip with the sixth input or the output of first control chip connects respectively second contact and third contact in the third gear switch, the first input or the output of first control chip do inside control module's first output, the second input or the output of first control chip with the third input or the output of first control chip does inside control module's second output.
4. The light control system of claim 3, wherein the internal control module further comprises: a resistor R3, a resistor R4, a capacitor C3 and a voltage regulator tube D2;
one end of the resistor R3 is connected with the resistor R4 and then grounded, and the other end of the resistor R3 is a first input end of the internal control module;
one end of the capacitor C3 is connected to a connecting line between the resistor R3 and the resistor R4, and the other end of the capacitor C3 is grounded;
the anode end of the voltage regulator tube D2 is grounded, and the cathode end of the voltage regulator tube D2 is respectively connected to the connecting line between the resistor R3 and the resistor R4 and the eighth input or output end of the first control chip.
5. The light control system of any one of claims 1-4, wherein the switching power supply control module comprises: the second control chip, a capacitor C4 and a resistor R5;
the brightness adjusting end of the second control chip is a second input end of the switching power supply control module, and an analog signal power supply end of the second control chip is connected with the capacitor C4 and then grounded; the high-voltage terminal of the second control chip is the first input terminal of the switch power supply control module, the signal output terminal of the second control chip is the second output terminal of the switch power supply control module, the enabling terminal of the second control chip is connected with the ground after being connected with the resistor R5, and the analog signal ground terminal of the second control chip is connected with the ground.
6. The light control system of claim 5, wherein the switching power supply control module further comprises: a capacitor C5 and a resistor R6;
one end of the capacitor C5 and one end of the resistor R6 are respectively connected with the brightness adjusting end of the second control chip, and the other end of the capacitor C5 and the other end of the resistor R6 are grounded.
7. The light control system of any one of claims 1-4, wherein the conversion module comprises: the LED driving circuit comprises a diode D3, a diode D4, an inductor L1, a voltage regulator tube D5, a resistor R7, a resistor R8, a capacitor C6, a capacitor C7 and a transistor group;
the anode of the diode D3 is a first input end of the conversion module, the cathode of the diode D3 is connected to the cathode of the diode D4, the cathode of the voltage regulator tube D5, one end of the resistor R7 and one end of the capacitor C6 respectively and then is a first output end of the conversion module, the anode of the diode D4 is a second input end of the conversion module, one end of the inductor L1 is connected to the anode of the diode D4, the other end of the inductor L1 is connected to the anode of the voltage regulator tube D5, the other end of the resistor R7 and the other end of the capacitor C6 respectively and then is connected to the gate of each transistor in the transistor group and the source of each transistor;
one end of the capacitor C7 is connected between the other end of the inductor L1 and the anode of the voltage regulator tube D5, and the other end of the capacitor C7 is connected with the resistor R8 and then grounded;
and the grid electrode of each transistor in the transistor group is also respectively connected with the second output end of the internal control module and the first output end of the conversion module, and the drain of each transistor in the transistor group is respectively used as the second output end to the Nth output end of the conversion module.
8. The light control system of claim 7, wherein the conversion module further comprises: a resistor R9 and a resistor R10;
a resistor R9 is also connected between the gate of each transistor and the first output end of the conversion module, and a resistor R10 is also connected between the gate of each transistor and the other end of the inductor L1.
9. The light control system of claim 1, wherein the light control system further comprises: the device comprises a rectifying module, a filtering module and a protection module;
the input end of the rectification module is connected with an alternating current power supply after the external control switch, the positive output end of the rectification module is connected with the first end of the protection module and the input end of the filtering module respectively, the negative output end of the rectification module is connected with the second end of the protection module and then connected with the input end of the filtering module, the first output end of the filtering module is connected with the first input end of the internal control module and the first input end of the switching power supply control module respectively, and the second output end of the filtering module is connected with the third end of the protection module and then grounded.
10. The light control system of claim 9, wherein the protection module comprises: the protection circuit comprises an anti-electric shock leakage protection chip, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a capacitor C8 and a diode D6;
the voltage detection end of the electric shock prevention leakage protection chip is connected with one end of the resistor R12 after being connected with the resistor R13 in series, the other end of the resistor R12 is connected with the drain end of the internal high-voltage power tube of the electric shock prevention leakage protection chip and then is connected with the third end of the protection module, the grounding end of the electric shock prevention leakage protection chip is respectively connected with the second end of the protection module and one end of the resistor R14, the other end of the resistor R14 is connected between the resistor R12 and the resistor R13, the analog signal power end of the electric shock prevention leakage protection chip is connected between the resistor R11 and the capacitor C18, the other end of the resistor R11 is connected with the first end of the protection module, the other end of the capacitor C18 is connected with the second end of the protection module, the analog signal ground end of the electric shock prevention leakage protection chip is connected with one end of the resistor R15 and the second end of the cathode end of the diode D6 and then, and the inductance peak current detection end of the electric shock leakage protection chip is connected with the other end of the resistor R15 and the anode end of the diode D6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022143873.1U CN213662004U (en) | 2020-09-25 | 2020-09-25 | Light control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022143873.1U CN213662004U (en) | 2020-09-25 | 2020-09-25 | Light control system |
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| CN213662004U true CN213662004U (en) | 2021-07-09 |
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| CN202022143873.1U Active CN213662004U (en) | 2020-09-25 | 2020-09-25 | Light control system |
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