Circuit for realizing large-current fantasy color and realization method thereof

Abstract

The invention discloses a circuit for realizing large-current magical color, which comprises a control module, and a red light lamp bead string, a green light lamp bead string, a blue light lamp bead string and a white light lamp bead string which are connected in parallel, and is characterized in that a first switching circuit is connected between the output end of the control module and the red light lamp bead string; a second switch circuit is connected between the output end of the control module and the green light lamp bead string, a third switch circuit is connected between the output end of the control module and the blue light lamp bead string, and a fourth switch circuit is connected between the output end of the control module and the white light lamp bead string; the invention further discloses a realization method of the circuit for realizing the large-current magical color. The switching circuit is arranged between the control module and the lamp bead string, and the current flowing through the lamp bead string can be adjusted through the switching circuit, so that large-current and large-power output is realized, the power of the product can be improved without adding a driving chip, and the LED lamp can be applied to other indoor or outdoor lamps.

Description

Technical Field

[0001] The present invention belongs to the technical field of color illusion circuits, and in particular relates to a circuit for realizing large current color illusion and a method for realizing the same. Background Art

[0002] Colorful light strips have been widely used in buildings, bridges, roads, gardens, courtyards, floors, ceilings, furniture, cars, ponds, underwater, advertisements, signs and logos for decoration or lighting, adding endless joy and festive atmosphere to various festivals such as Christmas, Halloween, Valentine's Day, Easter, National Day, etc.

[0003] Due to the light strip control chip, the colorful light strips generally have low power and cannot be applied to other lighting products, limiting the product application.

[0004] Therefore, there is an urgent need for a circuit that can realize large current magic color display, so that the magic color display circuit can be suitable for large current, and thus can be applied to indoor or outdoor lamps. Summary of the invention

[0005] The purpose of the present invention is to provide a circuit for realizing high current color illusion to solve the problems raised in the above background technology. The circuit for realizing high current color illusion provided by the present invention has the characteristics that the color illusion circuit can be applied to high current and thus can be applied to indoor or outdoor lamps.

[0006] Another object of the present invention is to provide a method for realizing a circuit for realizing high current magic color.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a circuit for realizing large-current fantasy colors, comprising a control module and a red light lamp bead string, a green light lamp bead string, a blue light lamp bead string and a white light lamp bead string connected in parallel, wherein a first switching circuit is connected between the output end of the control module and the red light lamp bead string, a second switching circuit is connected between the output end of the control module and the green light lamp bead string, a third switching circuit is connected between the output end of the control module and the blue light lamp bead string, and a fourth switching circuit is connected between the output end of the control module and the white light lamp bead string.

[0008] In order to output the PWM control signal, the control module further includes a controller and a driving chip U1, wherein the DAT pin of the controller is connected to the 6th pin of the driving chip U1, the 7th pin of the driving chip U1 is connected to the resistor R13 and one end of the capacitor C1, the other end of the resistor R13 is connected to the VCC end, and the other end of the capacitor C1, the GND pin of the controller and the 4th pin of the driving chip U1 are all connected to the GND end.

[0009] Further in the present invention, the first switching circuit includes a transistor Q1 and a MOS tube T1, wherein the base of the transistor Q1 is connected to pin 1 of the driving chip U1, the collector of the transistor Q1 and the gate of the MOS tube T1 are both connected to the VCC terminal, the drain of the MOS tube T1 is connected to the negative terminal of the red light bead string, and the emitter of the transistor Q1 and the source of the MOS tube T1 are both connected to the GND terminal.

[0010] In order to prevent the transistor Q1 from being broken down due to excessive current, the base of the transistor Q1 is further connected to one end of the resistor R1, and the other end of the resistor R1 is connected to the VCC terminal.

[0011] In order to prevent the MOS tube T1 from being broken down due to excessive current, a resistor R5 is further connected between the gate of the MOS tube T1 and the VCC terminal.

[0012] In order to adjust the current of the red light lamp string, thereby achieving high current and high power output, a resistor R9 is further connected between the drain of the MOS tube T1 and the negative terminal of the red light lamp string.

[0013] Furthermore, in the present invention, the circuit structures and connection relationships of the second switch circuit, the third switch circuit and the fourth switch circuit are the same as those of the first switch circuit.

[0014] In the present invention, the method for realizing a circuit for realizing high current magic color further comprises the following steps:

[0015] (1) When the pin 1 of the driver chip U1 outputs a high level, the transistor Q1 is turned on and the MOS tube T1 is turned off. At this time, the red light bead string does not light up;

[0016] (ii) When the pin 1 of the driver chip U1 outputs a low level, the transistor Q1 is turned off and the MOS tube T1 is turned on. At this time, the red light bead string lights up;

[0017] (3) The brightness of the red light bead string is adjusted by outputting the duty cycle of the PWM signal through the pin 1 of the driver chip U1;

[0018] (IV) The adjustment steps for the green light bead string, blue light bead string and white light bead string are the same as those for the red light bead string.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention sets a switch circuit between the control module and the lamp bead string. The current flowing through the lamp bead string can be adjusted by setting the switch circuit, thereby achieving high current and high power output. The power of the product can be increased without adding a driver chip, so it can be applied to other indoor or outdoor lamps, and has the characteristics of simple circuit structure and low cost;

[0021] 2. The present invention can adjust the current of the red light bead string, the green light bead string, the blue light bead string and the white light bead string respectively by adjusting the resistance values ​​of the resistor R9, the resistor R10, the resistor R11 and the resistor R12, thereby achieving high current and high power output;

[0022] 3. The present invention uses resistors R1, R2, R3 and R4 to limit current, so as to prevent excessive current from breaking through transistors Q1, Q2, Q3 and Q4;

[0023] 4. The present invention uses resistors R5, R6, R7 and R8 to limit current, so as to prevent excessive current from breaking through MOS transistors T1, T2, T3 and T4. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a connection block diagram of the present invention;

[0025] Figure 2 is a circuit diagram of a control module of the present invention;

[0026] Figure 3 A circuit diagram of the first switch circuit of the present invention connected to a string of red light beads;

[0027] Figure 4 A circuit diagram of the second switch circuit of the present invention connected to a string of green light beads;

[0028] Figure 5 A circuit diagram of the third switch circuit of the present invention connected to a string of blue light beads;

[0029] Figure 6 This is a circuit diagram of the fourth switch circuit of the present invention connected to a string of white light lamp beads.

[0030] In the figure: 1. control module; 2. first switch circuit; 3. second switch circuit; 4. third switch circuit; 5. fourth switch circuit; 6. red light lamp bead string; 7. green light lamp bead string; 8. blue light lamp bead string; 9. white light lamp bead string. DETAILED DESCRIPTION

[0031] 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.

[0032] Example 1

[0033] See also Figure 1-Figure 6The present invention provides the following technical solutions: a circuit for realizing large current fantasy colors, comprising a control module 1 and a red light lamp bead string 6, a green light lamp bead string 7, a blue light lamp bead string 8 and a white light lamp bead string 9 connected in parallel, wherein a first switch circuit 2 is connected between the output end of the control module 1 and the red light lamp bead string 6, a second switch circuit 3 is connected between the output end of the control module 1 and the green light lamp bead string 7, a third switch circuit 4 is connected between the output end of the control module 1 and the blue light lamp bead string 8, and a fourth switch circuit 5 is connected between the output end of the control module 1 and the white light lamp bead string 9.

[0034] By adopting the above technical solution, the present invention sets a switching circuit between the control module 1 and the lamp bead string. The current flowing through the lamp bead string can be adjusted through the setting of the switching circuit, thereby achieving high current and high power output. The power of the product can be increased without adding a driving chip, so it can be applied to other indoor or outdoor lamps, and has the characteristics of simple circuit structure and low cost.

[0035] Specifically, the control module 1 includes a controller and a driver chip U1, wherein the DAT pin of the controller is connected to the 6th pin of the driver chip U1, the 7th pin of the driver chip U1 is connected to the resistor R13 and one end of the capacitor C1, the other end of the resistor R13 is connected to the VCC end, the other end of the capacitor C1, the GND pin of the controller and the 4th pin of the driver chip U1 are all connected to the GND end, and the controller is preferably a single-chip microcomputer STM8.

[0036] The above technical solution is used to output a PWM control signal.

[0037] Specifically, the first switching circuit 3 includes a transistor Q1 and a MOS tube T1, wherein the base of the transistor Q1 is connected to pin 1 of the driving chip U1, the collector of the transistor Q1 and the gate of the MOS tube T1 are both connected to the VCC terminal, the drain of the MOS tube T1 is connected to the negative terminal of the red light lamp bead string 6, the emitter of the transistor Q1 and the source of the MOS tube T1 are both connected to the GND terminal, and a resistor R9 is connected between the drain of the MOS tube T1 and the negative terminal of the red light lamp bead string 6.

[0038] Specifically, the second switching circuit 4 includes a transistor Q2 and a MOS tube T2, wherein the base of the transistor Q2 is connected to pin 2 of the driving chip U1, the collector of the transistor Q2 and the gate of the MOS tube T2 are both connected to the VCC terminal, the drain of the MOS tube T2 is connected to the negative terminal of the green light lamp bead string 7, the emitter of the transistor Q2 and the source of the MOS tube T2 are both connected to the GND terminal, and a resistor R10 is connected between the drain of the MOS tube T2 and the negative terminal of the green light lamp bead string 7.

[0039] Specifically, the third switching circuit 5 includes a transistor Q3 and a MOS tube T3, wherein the base of the transistor Q3 is connected to pin 3 of the driving chip U1, the collector of the transistor Q3 and the gate of the MOS tube T3 are both connected to the VCC terminal, the drain of the MOS tube T3 is connected to the negative terminal of the blue light lamp bead string 8, the emitter of the transistor Q3 and the source of the MOS tube T3 are both connected to the GND terminal, and a resistor R11 is connected between the drain of the MOS tube T3 and the negative terminal of the blue light lamp bead string 8.

[0040] Specifically, the fourth switching circuit 6 includes a transistor Q4 and a MOS tube T4, wherein the base of the transistor Q4 is connected to pin 8 of the driving chip U1, the collector of the transistor Q4 and the gate of the MOS tube T4 are both connected to the VCC terminal, the drain of the MOS tube T4 is connected to the negative terminal of the white light lamp bead string 9, the emitter of the transistor Q4 and the source of the MOS tube T4 are both connected to the GND terminal, and a resistor R12 is connected between the drain of the MOS tube T4 and the negative terminal of the white light lamp bead string 9.

[0041] By adopting the above technical solution, by adjusting the resistance values ​​of resistors R9, R10, R11 and R12, the currents of the red light bead string 6, the green light bead string 7, the blue light bead string 8 and the white light bead string 9 can be adjusted respectively, thereby achieving high current and high power output.

[0042] Example 2

[0043] The difference between this embodiment and Embodiment 1 is that: specifically, the base of the transistor Q1 is also connected to one end of the resistor R1, and the other end of the resistor R1 is connected to the VCC terminal; the base of the transistor Q2 is also connected to one end of the resistor R2, and the other end of the resistor R2 is connected to the VCC terminal; the base of the transistor Q3 is also connected to one end of the resistor R3, and the other end of the resistor R3 is connected to the VCC terminal; the base of the transistor Q4 is also connected to one end of the resistor R4, and the other end of the resistor R4 is connected to the VCC terminal.

[0044] By adopting the above technical solution, the resistors R1, R2, R3 and R4 are used to limit the current, so as to avoid excessive current breaking through the transistors Q1, Q2, Q3 and Q4.

[0045] Example 3

[0046] The present embodiment is different from the first embodiment in that: specifically, a resistor R5 is connected between the gate of the MOS transistor T1 and the VCC terminal; a resistor R6 is connected between the gate of the MOS transistor T2 and the VCC terminal; a resistor R7 is connected between the gate of the MOS transistor T3 and the VCC terminal; and a resistor R8 is connected between the gate of the MOS transistor T4 and the VCC terminal.

[0047] By adopting the above technical solution, the resistors R5, R6, R7 and R8 are used to limit the current, so as to prevent the MOS transistors T1, T2, T3 and T4 from being broken down due to excessive current.

[0048] Example 4

[0049] Furthermore, a method for realizing a circuit for realizing high current magic color according to the present invention comprises the following steps:

[0050] (I) When the pin 1 of the driver chip U1 outputs a high level, the transistor Q1 is turned on and the MOS tube T1 is turned off. At this time, the red light bead string 6 is not lit;

[0051] (ii) When the pin 1 of the driver chip U1 outputs a low level, the transistor Q1 is turned off and the MOS tube T1 is turned on. At this time, the red light bead string 6 lights up;

[0052] (iii) The brightness of the red light bead string 6 is adjusted by outputting the duty cycle of the PWM signal through the pin 1 of the driver chip U1;

[0053] (iv) The adjustment steps of the green light lamp bead string 7, the blue light lamp bead string 8 and the white light lamp bead string 9 are the same as those of the red light lamp bead string 6.

[0054] In summary, the present invention sets a switch circuit between the control module 1 and the lamp bead string. The setting of the switch circuit can adjust the current flowing through the lamp bead string, thereby achieving high current and high power output. The power of the product can be increased without adding a driving chip, so that it can be applied to other indoor or outdoor lamps, and has the characteristics of simple circuit structure and low cost; the present invention can adjust the current of the red light lamp bead string 6, the green light lamp bead string 7, the blue light lamp bead string 8 and the white light lamp bead string 9 respectively by adjusting the resistance values ​​of the resistors R9, R10, R11 and R12, thereby achieving high current and high power output; the present invention limits the current through the resistors R1, R2, R3 and R4 to prevent the excessive current from breaking through the transistors Q1, Q2, Q3 and Q4; the present invention limits the current through the resistors R5, R6, R7 and R8 to prevent the excessive current from breaking through the MOS tubes T1, T2, T3 and T4.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A circuit for realizing high current magic color, characterized in that: It includes a control module and a red light lamp bead string, a green light lamp bead string, a blue light lamp bead string and a white light lamp bead string connected in parallel, wherein a first switch circuit is connected between the output end of the control module and the red light lamp bead string, a second switch circuit is connected between the output end of the control module and the green light lamp bead string, a third switch circuit is connected between the output end of the control module and the blue light lamp bead string, and a fourth switch circuit is connected between the output end of the control module and the white light lamp bead string.

2. A circuit for realizing high current magic color according to claim 1, characterized in that: The control module includes a controller and a driving chip U1, wherein the DAT pin of the controller is connected to the 6th pin of the driving chip U1, the 7th pin of the driving chip U1 is connected to the resistor R13 and one end of the capacitor C1, the other end of the resistor R13 is connected to the VCC end, and the other end of the capacitor C1, the GND pin of the controller and the 4th pin of the driving chip U1 are all connected to the GND end.

3. A circuit for realizing high current magic color according to claim 2, characterized in that: The first switch circuit includes a transistor Q1 and a MOS tube T1, wherein the base of the transistor Q1 is connected to pin 1 of the driving chip U1, the collector of the transistor Q1 and the gate of the MOS tube T1 are both connected to the VCC terminal, the drain of the MOS tube T1 is connected to the negative terminal of the red light bead string, and the emitter of the transistor Q1 and the source of the MOS tube T1 are both connected to the GND terminal.

4. A circuit for realizing high current magic color according to claim 3, characterized in that: The base of the transistor Q1 is also connected to one end of the resistor R1, and the other end of the resistor R1 is connected to the VCC terminal.

5. The circuit for realizing high current magic color according to claim 4, characterized in that: A resistor R5 is connected between the gate of the MOS tube T1 and the VCC terminal.

6. The circuit for realizing high current magic color according to claim 5, characterized in that: A resistor R9 is connected between the drain of the MOS tube T1 and the negative terminal of the red light bead string.

7. The circuit for realizing high current magic color according to claim 6, characterized in that: The circuit structures and connection relationships of the second switch circuit, the third switch circuit and the fourth switch circuit are the same as those of the first switch circuit.

8. A method for realizing a circuit for realizing high current magic color according to any one of claims 1 to 7, characterized in that: The following steps are involved: (1) When the pin 1 of the driver chip U1 outputs a high level, the transistor Q1 is turned on and the MOS tube T1 is turned off. At this time, the red light bead string does not light up; (ii) When the pin 1 of the driver chip U1 outputs a low level, the transistor Q1 is turned off and the MOS tube T1 is turned on. At this time, the red light bead string lights up; (3) The brightness of the red light bead string is adjusted by outputting the duty cycle of the PWM signal through the pin 1 of the driver chip U1; (IV) The adjustment steps for the green light bead string, blue light bead string and white light bead string are the same as those for the red light bead string.

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