A power controller circuit based on single chip microcomputer

Abstract

The invention discloses a power controller circuit based on a single-chip microcomputer, comprising a single-chip microcomputer circuit, a first constant current source circuit, a second constant current source circuit, a voltage follower circuit, a voltage stabilizing circuit and a voltage conversion circuit; the single-chip microcomputer circuit is respectively connected with the voltage follower circuit, the voltage stabilizing circuit and the voltage conversion circuit, the voltage follower circuit is connected with the first constant current source circuit, and the voltage stabilizing circuit is connected with the second constant current source circuit; the single-chip microcomputer circuit is also connected with a potentiometer circuit, and the potentiometer circuit is connected with a dial switch; the single-chip microcomputer detects changes in input signals and feeds back the signals to the voltage follower input terminal at the same time; the voltage follower circuit prevents the LED power supply terminal signal from affecting the single-chip microcomputer output terminal signal, the voltage stabilizing circuit functions to limit the maximum voltage amplitude to not exceed 10V, and the voltage conversion circuit converts a 24V voltage into 5V to power the single-chip microcomputer; the dial switch can switch different gears, the first adjustable potentiometer can adjust the second gear power, and the second adjustable potentiometer can adjust the third gear power.

Description

Technical Field

[0001] The invention relates to the technical field of power control, and in particular to a power controller circuit based on a single chip microcomputer. Background Art

[0002] Existing technical solutions (such as Figure 5 As shown in the figure, one end of the adjustable potentiometer of the power controller is connected to the dip switch, and the other end of the adjustable potentiometer is connected to the DIM1+ port; but using this technical solution, when the power controller is connected to a passive 0-10V dimmer, the working power of the power controller will decrease; when the power controller is connected to an active 0-10V dimmer, the working power of the power controller will increase; this is a problem that needs to be solved for better use. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a power controller circuit based on a single chip microcomputer.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A power controller circuit based on a single-chip microcomputer comprises a single-chip microcomputer circuit, a first constant current source circuit, a second constant current source circuit, a voltage follower circuit, a voltage stabilizing circuit and a voltage conversion circuit; the single-chip microcomputer circuit is respectively connected to the voltage follower circuit, the voltage stabilizing circuit and the voltage conversion circuit, the voltage follower circuit is connected to the first constant current source circuit, and the voltage stabilizing circuit is connected to the second constant current source circuit; the single-chip microcomputer circuit is also connected to a potentiometer circuit, and the potentiometer circuit is connected to a dial switch; the single-chip microcomputer detects changes in an input signal and feeds the signal back to an input terminal of the voltage follower; the seventh pin of the single-chip microcomputer is an input PWM signal terminal;

[0006] The first constant current source circuit includes a fifth triode, a sixth triode, a twenty-ninth resistor and a thirtieth resistor; the collector of the fifth triode is connected to the output end of the voltage follower, the base of the fifth triode is respectively connected to one end of the twenty-ninth resistor and the collector of the sixth triode; the emitter of the fifth triode is respectively connected to the base of the sixth triode and one end of the thirtieth resistor, and the emitter of the sixth triode is connected to the other end of the thirtieth resistor and grounded;

[0007] The second constant current source circuit includes a third transistor, a fourth transistor, a first resistor and a twenty-seventh resistor; the base of the third transistor is respectively connected to the collector of the fourth transistor and one end of the twenty-seventh resistor, and the collector of the third transistor is connected to the other end of the twenty-seventh resistor; the emitter of the third transistor is respectively connected to the base of the fourth transistor and one end of the first resistor, and the other end of the first resistor is connected in parallel with the emitter of the fourth transistor and connected to the seventh pin of the microcontroller through the twenty-third resistor.

[0008] Preferably, the single-chip microcomputer circuit includes a single-chip microcomputer, an eighth capacitor, a second resistor and a sixteenth resistor; the single-chip microcomputer is provided with eight pins, one end of the eighth capacitor is connected to the first pin of the single-chip microcomputer, and the other end of the eighth capacitor is connected to the eighth pin of the single-chip microcomputer and grounded; one end of the sixteenth resistor is connected to the second pin of the single-chip microcomputer, and the other end of the sixteenth resistor is connected to the third pin of the single-chip microcomputer; the fifth pin of the single-chip microcomputer is connected to the second resistor and grounded.

[0009] Preferably, the voltage follower circuit includes a voltage follower, a tenth capacitor, an eleventh capacitor, a nineteenth resistor and a twentieth resistor; the output end of the voltage follower is respectively connected to the first constant current source circuit and one end of the nineteenth resistor, the in-phase input end of the voltage follower is connected to one end of the eleventh capacitor and is connected to a fifteenth resistor, and the fifteenth resistor is connected to the third pin of the single-chip microcomputer; the inverting input end of the voltage follower is respectively connected to the nineteenth resistor and the twentieth resistor, the twentieth resistor is connected to the eleventh capacitor and is grounded; one end of the tenth capacitor is connected to the positive power supply of the voltage follower, and the other end of the tenth capacitor is grounded; the negative power supply of the voltage follower is grounded.

[0010] Preferably, the voltage-stabilizing circuit includes a ninth voltage-stabilizing light tube and a twelfth capacitor; the ninth voltage-stabilizing light tube and the twelfth capacitor are connected in parallel, one end of the ninth voltage-stabilizing light tube and the twelfth capacitor are connected to the seventh pin of the single-chip microcomputer, and the other end of the ninth voltage-stabilizing light tube and the twelfth capacitor are grounded.

[0011] Preferably, the voltage conversion circuit includes a third voltage regulator tube, an eighth diode, a first polarized capacitor and a ninth capacitor; the input end of the third voltage regulator tube is respectively connected to the positive electrode of the eighth diode and the positive electrode of the first polarized capacitor, and the negative electrode of the eighth diode is connected to a power supply interface; the output end of the third voltage regulator tube is respectively connected to one end of the ninth capacitor and the first pin of the single-chip microcomputer, and the other end of the ninth capacitor, the ground end of the third voltage regulator tube and the negative electrode of the first polarized capacitor are connected and grounded.

[0012] Preferably, the potentiometer circuit includes a first adjustable potentiometer, a second adjustable potentiometer, a third resistor, a fourth resistor, a fifth resistor and a second capacitor; eight pins are provided on the dip switch, and the first adjustable potentiometer and the second adjustable potentiometer are connected in parallel; one end of the first adjustable potentiometer is connected to the first pin of the dip switch, and the other end of the first adjustable potentiometer is connected to the fifth resistor; one end of the second adjustable potentiometer is connected to the third pin of the dip switch, and the other end of the second adjustable potentiometer is connected to the fifth resistor; one end of the fifth resistor is respectively connected to the third resistor, the fourth resistor and the second capacitor, the second capacitor is grounded, and the fourth resistor is connected to the fourth pin of the single-chip microcomputer.

[0013] Preferably, the power controller circuit also includes a DIM1+ port and a DIM- port; the DIM1+ port is respectively connected to the output end of the voltage follower and the collector of the fifth transistor through a twenty-second resistor, and the DIM- port is grounded.

[0014] Preferably, the power controller circuit further includes a DIM2+ port and a DIM1- port; the DIM2+ port is connected to the seventh pin of the single chip microcomputer via the twenty-third resistor.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention designs a power controller circuit based on a single-chip microcomputer. The single-chip microcomputer detects changes in an input signal and feeds back the signal to an input end of a voltage follower. The voltage follower circuit prevents a signal at an LED power supply end from affecting a signal at an output end of the single-chip microcomputer. The function of a first constant current source circuit is to pull the current of a 0-10V LED power supply dimming light. The function of a voltage stabilizing circuit is to limit the maximum voltage amplitude to not exceed 10V. The function of a second constant current source circuit is to feed current to a passive 0-10V dimmer. A voltage conversion circuit converts a 24V voltage into 5V to supply power to the single-chip microcomputer. Different gears can be switched through a dip switch, the second gear power can be adjusted through a first adjustable potentiometer, and the third gear power can be adjusted through a second adjustable potentiometer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 The circuit schematic diagram proposed by the present invention;

[0019] Figure 2 A circuit diagram of a voltage conversion circuit proposed by the present invention;

[0020] Figure 3A schematic diagram of a three-speed power controller proposed by the present invention;

[0021] Figure 4 The wiring schematic diagram proposed by the present invention;

[0022] Figure 5 The circuit diagram of the prior art solution proposed by the present invention.

[0023] Legend:

[0024] 1. Single chip microcomputer circuit, 2. First constant current source circuit, 3. Second constant current source circuit, 4. Voltage follower circuit, 5. Voltage stabilizing circuit, 6. Voltage conversion circuit, 7. Potentiometer circuit, SW1, DIP switch, U3, third voltage stabilizing tube, U4, single chip microcomputer, U5, voltage follower, Q3, third transistor, Q4, fourth transistor, Q5, fifth transistor, Q6, sixth transistor, D9, ninth voltage stabilizing tube, RM, first adjustable potentiometer, RL, second adjustable potentiometer. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the features defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more; in addition, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a communication between the two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Reference Figures 1 to 4 As shown, a power controller circuit based on a single-chip microcomputer includes a single-chip microcomputer circuit 1, a first constant current source circuit 2, a second constant current source circuit 3, a voltage follower circuit 4, a voltage stabilizing circuit 5 and a voltage conversion circuit 6; the single-chip microcomputer circuit 1 is connected to the voltage follower circuit 4, the voltage stabilizing circuit 5 and the voltage conversion circuit 6 respectively, the voltage follower circuit 4 is connected to the first constant current source circuit 2, and the voltage stabilizing circuit 5 is connected to the second constant current source circuit 3; the single-chip microcomputer circuit 1 is also connected to a potentiometer circuit 7, and the potentiometer circuit 7 is connected to a dip switch SW1.

[0028] Among them, the single-chip microcomputer circuit 1 includes a single-chip microcomputer U4, an eighth capacitor C8, a second resistor R2 and a sixteenth resistor R16; the single-chip microcomputer U4 is provided with eight pins, one end of the eighth capacitor C8 is connected to the first pin of the single-chip microcomputer U4, and the other end of the eighth capacitor C8 is connected to the eighth pin of the single-chip microcomputer U4 and grounded; one end of the sixteenth resistor R16 is connected to the second pin of the single-chip microcomputer U4, and the other end of the sixteenth resistor R16 is connected to the third pin of the single-chip microcomputer U4; the fifth pin of the single-chip microcomputer U4 is connected to the second resistor R2 and grounded; the first pin of the single-chip microcomputer U4 is the positive terminal of the power supply, the second pin is the output compensation terminal, the third pin is the output terminal, the fourth pin is the maximum power setting terminal, the fifth pin is the light detection terminal, the sixth pin is the input DIM signal terminal, the seventh pin is the input PWM signal terminal, and the eighth pin is the negative terminal of the power supply; the single-chip microcomputer U4 detects changes in the input signal and feeds the signal back to the input terminal of the voltage follower U5.

[0029] The voltage follower circuit 4 includes a voltage follower U5, a tenth capacitor C10, an eleventh capacitor C11, a nineteenth resistor R19 and a twentieth resistor R20; the output end of the voltage follower U5 is respectively connected to the first constant current source circuit 2 and one end of the nineteenth resistor R19, the in-phase input end of the voltage follower U5 is connected to one end of the eleventh capacitor C11 and is connected to a fifteenth resistor R15, and the fifteenth resistor R15 is connected to the third pin of the single-chip computer U4; the inverting input end of the voltage follower U5 is respectively connected to the nineteenth resistor R19 and the twentieth resistor R20, the twentieth resistor R20 and the eleventh capacitor C11 are connected and grounded; one end of the tenth capacitor C10 is connected to the positive power supply of the voltage follower U5, and the other end of the tenth capacitor C10 is grounded; the negative power supply of the voltage follower U5 is grounded; the voltage follower circuit 4 prevents the LED power supply end signal from affecting the output end signal of the single-chip computer U4.

[0030] The first constant current source circuit 2 includes a fifth transistor Q5, a sixth transistor Q6, a twenty-ninth resistor R29 and a thirtieth resistor R30; the collector of the fifth transistor Q5 is connected to the output end of the voltage follower U5, and the base of the fifth transistor Q5 is respectively connected to one end of the twenty-ninth resistor R29 and the collector of the sixth transistor Q6; the emitter of the fifth transistor Q5 is respectively connected to the base of the sixth transistor Q6 and one end of the thirtieth resistor R30, and the emitter of the sixth transistor Q6 is connected to the other end of the thirtieth resistor R30 and grounded; the current size depends on R30, current = Vbe / R30, and the function of the first constant current source circuit 2 is to pull the current of the 0-10V LED power dimming light.

[0031] The voltage stabilizing circuit 5 includes a ninth voltage stabilizing light tube D9 and a twelfth capacitor C12; the ninth voltage stabilizing light tube D9 and the twelfth capacitor C12 are connected in parallel, one end of the ninth voltage stabilizing light tube D9 and the twelfth capacitor C12 are connected to the seventh pin of the single-chip computer U4, and the other end of the ninth voltage stabilizing light tube D9 and the twelfth capacitor C12 are grounded; the function of the voltage stabilizing circuit is to limit the maximum voltage amplitude to no more than 10V.

[0032] The second constant current source circuit 3 includes a third triode Q3, a fourth triode Q4, a first resistor R1 and a twenty-seventh resistor R27; the base of the third triode Q3 is respectively connected to the collector of the fourth triode Q4 and one end of the twenty-seventh resistor R27, and the collector of the third triode Q3 is connected to the other end of the twenty-seventh resistor R27; the emitter of the third triode Q3 is respectively connected to the base of the fourth triode Q4 and one end of the first resistor R1, the other end of the first resistor R1 is connected in parallel with the emitter of the fourth triode Q4 and is connected to the seventh pin of the single-chip computer U4 through the twenty-third resistor R23; the current size depends on R31, current = Vbe / R31, and the function of the second constant current source circuit 3 is to supply current to the passive 0-10V dimmer.

[0033] The voltage conversion circuit 6 includes a third voltage-stabilizing tube U3, an eighth diode D8, a first polarized capacitor C1 and a ninth capacitor C9; the input end of the third voltage-stabilizing tube U3 is respectively connected to the positive electrode of the eighth diode D8 and the positive electrode of the first polarized capacitor C1, and the negative electrode of the eighth diode D8 is connected to a power supply interface; the output end of the third voltage-stabilizing tube U3 is respectively connected to one end of the ninth capacitor C9 and the first pin of the single-chip computer U4, and the other end of the ninth capacitor C9, the ground end of the third voltage-stabilizing tube U3 and the negative electrode of the first polarized capacitor C1 are connected and grounded; the voltage conversion circuit 6 converts the 24V voltage into 5V to power the single-chip computer.

[0034] The potentiometer circuit 7 includes a first adjustable potentiometer RM, a second adjustable potentiometer RL, a third resistor R3, a fourth resistor R4, a fifth resistor R5 and a second capacitor C2; eight pins are provided on the dip switch SW1, and the first adjustable potentiometer RM and the second adjustable potentiometer RL are connected in parallel; one end of the first adjustable potentiometer RM is connected to the first pin of the dip switch SW1, and the other end of the first adjustable potentiometer RM is connected to the fifth resistor R5; one end of the second adjustable potentiometer RL is connected to the third pin of the dip switch SW1, and the other end of the second adjustable potentiometer RL is connected to the fifth resistor R5; one end of the fifth resistor R5 is respectively connected to the third resistor R3, the fourth resistor R4 and the second capacitor C2, the second capacitor C2 is grounded, and the fourth resistor R4 is connected to the fourth pin of the single-chip computer U4; the dip switch is a three-speed dip switch, in which the maximum power is not adjustable, and the second and third powers are adjustable; the first adjustable potentiometer RM potentiometer can adjust the second power, and the second adjustable potentiometer RL potentiometer can adjust the third power.

[0035] The power controller circuit also includes a DIM1+ port and a DIM- port; the DIM1+ port is respectively connected to the output end of the voltage follower U5 and the collector of the fifth transistor Q5 through the twenty-second resistor R22, and the DIM- port is grounded; the power controller circuit also includes a DIM2+ port and a DIM1- port; the DIM2+ port is connected to the seventh pin of the microcontroller U4 through the twenty-third resistor R23; the DIM- port is connected to the DIM- of the 0-10V LED dimming power supply, and the DIM1+ port is connected to the DIM+ of the 0-10V LED dimming power supply; the DIM2+ port is externally connected to a 0-10V dimmer or a microwave sensor DIM+.

[0036] In a specific embodiment, the power controller is applied to a 0-10V, power-adjustable lamp, requiring the 0-10V power supply to have a 12V auxiliary power supply, the DIM1+ port and DIM1- port of the power controller are connected to the purple line and pink line of the power supply, and the DIM2+ port and DIM- port of the power controller are connected to a 0-10V dimmer or microwave; if the power of the entire lamp is 100W, the maximum power is 100W, the second power requirement is 80W, and the third power requirement is 60W; different gears can be switched through the dip switch SW1, the second power can be adjusted through the first adjustable potentiometer RM, and the third power can be adjusted through the second adjustable potentiometer RL; when multiple power supplies are connected in parallel, the dimming line current is large, and the current is pulled through the fifth transistor Q5 and the sixth transistor Q6; some 0-10V dimmers require a relatively large current, and the current is fed to the 0-10V dimmer through the third transistor Q3 and the fourth transistor Q4.

[0037] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0038] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A power controller circuit based on a single chip microcomputer, characterized in that: It includes a single-chip microcomputer circuit, a first constant current source circuit, a second constant current source circuit, a voltage follower circuit, a voltage stabilizing circuit and a voltage conversion circuit; the single-chip microcomputer circuit is respectively connected to the voltage follower circuit, the voltage stabilizing circuit and the voltage conversion circuit, the voltage follower circuit is connected to the first constant current source circuit, and the voltage stabilizing circuit is connected to the second constant current source circuit; the single-chip microcomputer circuit is also connected to a potentiometer circuit, and the potentiometer circuit is connected to a dial switch; the single-chip microcomputer detects changes in input signals and feeds back the signals to the voltage follower input terminal; the seventh pin of the single-chip microcomputer is an input PWM signal terminal; The first constant current source circuit includes a fifth triode, a sixth triode, a twenty-ninth resistor and a thirtieth resistor; the collector of the fifth triode is connected to the output end of the voltage follower, the base of the fifth triode is respectively connected to one end of the twenty-ninth resistor and the collector of the sixth triode; the emitter of the fifth triode is respectively connected to the base of the sixth triode and one end of the thirtieth resistor, and the emitter of the sixth triode is connected to the other end of the thirtieth resistor and grounded; The second constant current source circuit includes a third transistor, a fourth transistor, a first resistor and a twenty-seventh resistor; the base of the third transistor is respectively connected to the collector of the fourth transistor and one end of the twenty-seventh resistor, and the collector of the third transistor is connected to the other end of the twenty-seventh resistor; the emitter of the third transistor is respectively connected to the base of the fourth transistor and one end of the first resistor, and the other end of the first resistor is connected in parallel with the emitter of the fourth transistor and connected to the seventh pin of the microcontroller through the twenty-third resistor.

2. A power controller circuit based on a single chip microcomputer according to claim 1, characterized in that: The single-chip microcomputer circuit includes a single-chip microcomputer, an eighth capacitor, a second resistor and a sixteenth resistor; the single-chip microcomputer is provided with eight pins, one end of the eighth capacitor is connected to the first pin of the single-chip microcomputer, and the other end of the eighth capacitor is connected to the eighth pin of the single-chip microcomputer and grounded; one end of the sixteenth resistor is connected to the second pin of the single-chip microcomputer, and the other end of the sixteenth resistor is connected to the third pin of the single-chip microcomputer; the fifth pin of the single-chip microcomputer is connected to the second resistor and grounded.

3. A power controller circuit based on a single chip microcomputer according to claim 2, characterized in that: The voltage follower circuit includes a voltage follower, a tenth capacitor, an eleventh capacitor, a nineteenth resistor and a twentieth resistor; the output end of the voltage follower is respectively connected to the first constant current source circuit and one end of the nineteenth resistor, the in-phase input end of the voltage follower is connected to one end of the eleventh capacitor and is connected to a fifteenth resistor, and the fifteenth resistor is connected to the third pin of the single-chip microcomputer; the inverting input end of the voltage follower is respectively connected to the nineteenth resistor and the twentieth resistor, the twentieth resistor is connected to the eleventh capacitor and is grounded; one end of the tenth capacitor is connected to the positive pole of the power supply of the voltage follower, and the other end of the tenth capacitor is grounded; the negative pole of the power supply of the voltage follower is grounded.

4. A power controller circuit based on a single chip microcomputer according to claim 3, characterized in that: The voltage-stabilizing circuit includes a ninth voltage-stabilizing light tube and a twelfth capacitor; the ninth voltage-stabilizing light tube and the twelfth capacitor are connected in parallel, one end of the ninth voltage-stabilizing light tube and the twelfth capacitor are connected to the seventh pin of the single-chip microcomputer, and the other end of the ninth voltage-stabilizing light tube and the twelfth capacitor are grounded.

5. A power controller circuit based on a single chip microcomputer according to claim 4, characterized in that: The voltage conversion circuit includes a third voltage regulator tube, an eighth diode, a first polarized capacitor and a ninth capacitor; the input end of the third voltage regulator tube is respectively connected to the positive electrode of the eighth diode and the positive electrode of the first polarized capacitor, and the negative electrode of the eighth diode is connected to a power supply interface; the output end of the third voltage regulator tube is respectively connected to one end of the ninth capacitor and the first pin of the single-chip microcomputer, and the other end of the ninth capacitor, the ground end of the third voltage regulator tube and the negative electrode of the first polarized capacitor are connected and grounded.

6. A power controller circuit based on a single chip microcomputer according to claim 5, characterized in that: The potentiometer circuit includes a first adjustable potentiometer, a second adjustable potentiometer, a third resistor, a fourth resistor, a fifth resistor and a second capacitor; eight pins are provided on the dip switch, and the first adjustable potentiometer and the second adjustable potentiometer are connected in parallel; one end of the first adjustable potentiometer is connected to the first pin of the dip switch, and the other end of the first adjustable potentiometer is connected to the fifth resistor; one end of the second adjustable potentiometer is connected to the third pin of the dip switch, and the other end of the second adjustable potentiometer is connected to the fifth resistor; one end of the fifth resistor is respectively connected to the third resistor, the fourth resistor and the second capacitor, the second capacitor is grounded, and the fourth resistor is connected to the fourth pin of the single-chip microcomputer.

7. A power controller circuit based on a single chip microcomputer according to claim 6, characterized in that: The power controller circuit also includes a DIM1+ port and a DIM- port; the DIM1+ port is connected to the output end of the voltage follower and the collector of the fifth transistor respectively through a twenty-second resistor, and the DIM- port is grounded.

8. A power controller circuit based on a single chip microcomputer according to claim 7, characterized in that: The power controller circuit also includes a DIM2+ port and a DIM1- port; the DIM2+ port is connected to the seventh pin of the single chip microcomputer through the twenty-third resistor.

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