LED driving system

Abstract

The utility model discloses an LED driving system, and relates to the technical field of power supply. According to the main technical scheme, the LED driving system comprises a power input circuit, a filter circuit, an LED driving control special circuit UC10 and an LED circuit, and the input end of the filter circuit is connected with the output end of the power input circuit; the LED drive control special circuit UC10 is connected with the output end of the filter circuit; and the LED circuit is connected with the LED driving control special circuit UC10. Stable and pure power supply voltage is provided for a special circuit for LED driving control, so that the risk of LED flicker or uneven brightness caused by fluctuation of the power supply voltage is expected to be effectively reduced. By adjusting data input and clock input signals, the lighting and extinguishing states of the LED can be flexibly changed, and different application requirements are met. The LED circuit comprises a plurality of channel volume indicating units and state indicating LEDs, so that comprehensive visual indication of volume and state information can be expected to be realized. And thus, more visual and clearer operation feedback is provided for the user.

Description

TECHNICAL FIELD

[0001] The utility model relates to power supply technical field, concretely relates to a LED drive system. BACKGROUND

[0002] In the existing audio equipment or multimedia system, LED indicating lamp is often used to indicate volume size, signal state or other operation information.

[0003] The existing LED drive system mostly directly receives voltage from power supply, and the power supply voltage can be influenced by various factors (such as grid fluctuation, load change etc.), thereby causing the output of LED drive system to be unstable, to influence the working state of LED, causing LED to appear flickering or uneven brightness problem. SUMMARY

[0004] The utility model discloses a LED drive system, solve the existing LED drive system output unstable, to influence the working state of LED, causing LED to appear flickering or uneven brightness problem.

[0005] To solve the above technical problem, the utility model adopts the following technical scheme:

[0006] A kind of LED drive system, including power input circuit, filter circuit, LED drive control special circuit UC10 and LED circuit, the input end of the power input circuit is used to 5V+;The input end of the filter circuit is connected with the output end of the power input circuit;The LED drive control special circuit UC10 is TM1640, the 17th pin of the LED drive control special circuit UC10 is connected with the output end of the filter circuit;The 7th pin of the LED drive control special circuit UC10 is used to connect data input, the 7th pin of the LED drive control special circuit UC10 is used to connect clock input;The 6th pin of the LED drive control special circuit UC10 is grounded;The input end of the LED circuit is connected with the 9th pin, 10th pin, 11th pin, 12th pin, 13th pin, 14th pin, 15th pin, 16th pin of the LED drive control special circuit UC10;The output end of the LED is connected with the 1st pin, 2nd pin, 3rd pin, 4th pin, 5th pin, 18th pin, 19th pin, 20th pin, 21st pin, 22nd pin, 23rd pin, 24th pin, 25th pin, 26th pin, 27th pin, 28th pin of the LED drive control special circuit UC10.

[0007] Further technical solutions are: the power input circuit includes magnetic beads FB04, voltage stabilizer UB01, capacitor CB47, capacitor CB48, resistor RB24 and resistor RB25; one end of the magnetic beads FB04 is used for connecting 5V+; the other end of the magnetic beads FB04 is connected with one end of the capacitor CB47, one end of the capacitor CB48 and the No. 3 pin of the voltage stabilizer UB01; the other end of the capacitor CB47, the other end of the capacitor CB48 and one end of the resistor R25 are all grounded; the No. 1 pin of the voltage stabilizer UB01 is connected with the other end of the resistor RB25 and one end of the resistor RB24; the No. 2 pin of the voltage stabilizer UB01 is connected with the other end of the resistor RB24 and the input end of the filter circuit.

[0008] Further technical solutions are: the filter circuit includes capacitor CC01 and electrolytic capacitor EC13; the positive electrode of the electrolytic capacitor EC13 is connected with the No. 2 pin of the voltage stabilizer UB01, one end of the capacitor CC01 and the No. 17 pin of the LED drive control special circuit UC10; the negative electrode of the electrolytic capacitor EC13 and the other end of the capacitor CC01 are both grounded.

[0009] Further technical solutions are: the LED drive system further includes resistor RC62, resistor RC63, capacitor CC02, resistor RC64, capacitor CC03 and resistor RC65; one end of the resistor RC62, one end of the resistor RC65 and one end of the capacitor CC02 are all connected with the No. 8 pin of the LED drive control special circuit UC10; the other end of the capacitor CC02 is grounded; the other end of the resistor RC65 is used for connecting clock input; one end of the resistor RC63, one end of the resistor RC64 and one end of the capacitor CC32 are all connected with the No. 7 pin of the LED drive control special circuit UC10; the other end of the capacitor CC03 is grounded; the other end of the resistor RC64 is used for connecting data input; the other end of the resistor RC62 and the other end of the resistor RC63 are both connected with VDD3V3.

[0010] Further technical solutions are: the LED circuit includes a main volume indication unit; the main volume indication unit includes a capacitor CB17, and light emitting diodes LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8, LED9 and LED10; one end of the capacitor CB7, and the positive poles of the light emitting diodes LED1, LED2, LED3, LED4, LED5, LED6, LED7 and LED8 are connected with the 16th pin of the LED driving control special circuit UC10; the other end of the capacitor CB17 is grounded; the positive poles of the light emitting diodes LED9 and LED10 are connected with the 15th pin of the LED driving control special circuit UC10; the negative poles of the light emitting diodes LED1 and LED9 are connected with the 18th pin of the LED driving control special circuit UC10; the negative poles of the light emitting diodes LED2 and LED10 are connected with the 19th pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED3 is connected with the 20th pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED4 is connected with the 21st pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED5 is connected with the 22nd pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED6 is connected with the 23rd pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED7 is connected with the 24th pin of the LED driving control special circuit UC10; and the negative pole of the light emitting diode LED8 is connected with the 25th pin of the LED driving control special circuit UC10.

[0011] A further technical solution is: the LED circuit further comprises a first channel volume indication unit; the first channel volume indication unit comprises light emitting diodes LED12, LED13, LED14, LED15, LED16, LED17, LED18, LED19, LED20 and LED21; the anode of the light emitting diode LED12, the anode of the LED13, the anode of the LED14, the anode of the LED15 and the anode of the LED16 are all connected with the No. 15 pin of the LED driving control special circuit UC10; the anode of the light emitting diode LED17, the anode of the LED18, the anode of the LED19, the anode of the LED20 and the anode of the LED21 are all connected with the No. 14 pin of the LED driving control special circuit UC10; the cathode of the light emitting diode LED12 and the cathode of the LED20 are all connected with the No. 21 pin of the LED driving control special circuit UC10; the cathode of the light emitting diode LED13 and the cathode of the LED21 are all connected with the No. 22 pin of the LED driving control special circuit UC10; the cathode of the light emitting diode LED14 is connected with the No. 23 pin of the LED driving control special circuit UC10; the cathode of the light emitting diode LED15 is connected with the No. 24 pin of the LED driving control special circuit UC10; the cathode of the light emitting diode LED16 is connected with the No. 25 pin of the LED driving control special circuit UC10; the cathode of the light emitting diode LED17 is connected with the No. 18 pin of the LED driving control special circuit UC10; the cathode of the light emitting diode LED18 is connected with the No. 19 pin of the LED driving control special circuit UC10; the cathode of the light emitting diode LED19 is connected with the No. 20 pin of the LED driving control special circuit UC10.

[0012] A further technical solution is: the LED circuit further comprises a second channel volume indication unit; the second channel volume indication unit comprises light emitting diodes LED22, LED23, LED24, LED25, LED26, LED27, LED28, LED29, LED30 and LED31; the positive pole of the light emitting diode LED22, the positive pole of the LED23 and the positive pole of the LED24 are all connected with the No. 14 pin of the LED driving control special circuit UC10; the positive pole of the light emitting diode LED25, the positive pole of the LED26, the positive pole of the LED27, the positive pole of the LED28, the positive pole of the LED29, the positive pole of the LED30 and the positive pole of the LED31 are all connected with the No. 13 pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED22 and the negative pole of the LED30 are all connected with the No. 23 pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED23 and the negative pole of the LED31 are all connected with the No. 24 pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED24 is connected with the No. 25 pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED25 is connected with the No. 18 pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED26 is connected with the No. 19 pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED27 is connected with the No. 20 pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED28 is connected with the No. 21 pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED29 is connected with the No. 22 pin of the LED driving control special circuit UC10.

[0013] A further technical solution is: the LED circuit further comprises a third channel volume indication unit; the third channel volume indication unit comprises light emitting diodes LED32, LED33, LED34, LED35, LED36, LED37, LED38, LED39, LED40 and LED41; the positive electrode of the light emitting diode LED32 is connected with the No. 13 pin of the LED driving control special circuit UC10; the negative electrode of the light emitting diode LED32 is connected with the No. 25 pin of the LED driving control special circuit UC10; the positive electrode of the light emitting diode LED33, the positive electrode of the LED34, the positive electrode of the LED35, the positive electrode of the LED36, the positive electrode of the LED37, the positive electrode of the LED38, the positive electrode of the LED39, the positive electrode of the LED40 are all connected with the No. 12 pin of the LED driving control special circuit UC10; the positive electrode of the light emitting diode LED41 is connected with the No. 11 pin of the LED driving control special circuit UC10; the negative electrode of the light emitting diode LED33, the negative electrode of the LED41 are all connected with the No. 26 pin of the LED driving control special circuit UC10; the negative electrode of the light emitting diode LED34 is connected with the No. 27 pin of the LED driving control special circuit UC10; the negative electrode of the light emitting diode LED35 is connected with the No. 28 pin of the LED driving control special circuit UC10; the negative electrode of the light emitting diode LED36 is connected with the No. 1 pin of the LED driving control special circuit UC10; the negative electrode of the light emitting diode LED37 is connected with the No. 2 pin of the LED driving control special circuit UC10; the negative electrode of the light emitting diode LED38 is connected with the No. 3 pin of the LED driving control special circuit UC10; the negative electrode of the light emitting diode LED39 is connected with the No. 4 pin of the LED driving control special circuit UC10; the negative electrode of the light emitting diode LED40 is connected with the No. 5 pin of the LED driving control special circuit UC10.

[0014] A further technical solution is: the LED circuit further comprises a fourth channel volume indication unit; the fourth channel volume indication unit comprises light emitting diodes LED42, LED43, LED44, LED45, LED46, LED47, LED48, LED49, LED50 and LED51; the anode of the light emitting diode LED42, the anode of the LED43, the anode of the LED44, the anode of the LED45, the anode of the LED46, the anode of the LED47, the anode of the LED48 are all connected with the No. 11 pin of the LED driving control special circuit UC10; the anode of the light emitting diode LED49, the anode of the LED50, the anode of the LED51 are all connected with the No. 10 pin of the LED driving control special circuit UC10; the cathode of the light emitting diode LED42 is connected with the No. 27 pin of the LED driving control special circuit UC10; the cathode of the light emitting diode LED43 is connected with the No. 28 pin of the LED driving control special circuit UC10; the cathode of the light emitting diode LED44 is connected with the No. 1 pin of the LED driving control special circuit UC10; the cathode of the light emitting diode LED45 is connected with the No. 2 pin of the LED driving control special circuit UC10; the cathode of the light emitting diode LED46 is connected with the No. 3 pin of the LED driving control special circuit UC10; the cathode of the light emitting diode LED47 is connected with the No. 4 pin of the LED driving control special circuit UC10; the cathode of the light emitting diode LED48 is connected with the No. 5 pin of the LED driving control special circuit UC10; the cathode of the light emitting diode LED49 is connected with the No. 26 pin of the LED driving control special circuit UC10; the cathode of the light emitting diode LED50 is connected with the No. 27 pin of the LED driving control special circuit UC10; the cathode of the light emitting diode LED51 is connected with the No. 28 pin of the LED driving control special circuit UC10.

[0015] Further technical solutions are: the LED circuit further comprises light emitting diodes LED52, LED53, LED54, LED55, LED56, LED57, LED58, LED59, LED60, LED66 and LED68; the positive electrode of the light emitting diode LED52, the positive electrode of the LED53, the positive electrode of the LED54, the positive electrode of the LED55, the positive electrode of the LED56 are all connected with the No. 10 pin of the LED driving control special circuit UC10; the positive electrode of the light emitting diode LED57, the positive electrode of the LED58, the positive electrode of the LED59, the positive electrode of the LED60, the positive electrode of the LED66, the positive electrode of the LED68 are all connected with the No. 9 pin of the LED driving control special circuit UC10; the negative electrode of the light emitting diode LED52, the negative electrode of the LED60 are all connected with the No. 1 pin of the LED driving control special circuit UC10; the negative electrode of the light emitting diode LED53, the negative electrode of the LED66 are all connected with the No. 2 pin of the LED driving control special circuit UC10; the negative electrode of the light emitting diode LED54, the negative electrode of the LED68 are all connected with the No. 3 pin of the LED driving control special circuit UC10; the negative electrode of the light emitting diode LED55 is connected with the No. 4 pin of the LED driving control special circuit UC10; the negative electrode of the light emitting diode LED56 is connected with the No. 5 pin of the LED driving control special circuit UC10; the negative electrode of the light emitting diode LED57 is connected with the No. 26 pin of the LED driving control special circuit UC10; the negative electrode of the light emitting diode LED58 is connected with the No. 27 pin of the LED driving control special circuit UC10; the negative electrode of the light emitting diode LED59 is connected with the No. 28 pin of the LED driving control special circuit UC10.

[0016] Compared with the prior art, the utility model has the advantages of:

[0017] On the one hand, through the common action of the power input circuit and the filter circuit, a stable and pure power voltage is provided for the LED driving control special circuit, so as to effectively reduce the risk of LED flickering or uneven brightness caused by power voltage fluctuation. On the other hand, the LED driving control special circuit UC10 has multiple output pins and rich control functions, and can realize accurate control of multiple LEDs. By adjusting the data input and clock input signals, the lighting and extinguishing states of the LEDs can be flexibly changed to meet different application requirements. On the other hand, the LED circuit comprises multiple channel volume indication units and state indication LEDs, so as to realize comprehensive visual indication of the volume size and state information. Further, more intuitive and clear operation feedback is provided for the user. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1An electrical block diagram of an LED driving system in the embodiment;

[0019] Figure 2 A circuit structure topology diagram of an LED driving system in the embodiment. DETAILED DESCRIPTION

[0020] The utility model will be further described below with reference to the drawings.

[0021] EMBODIMENT

[0022] The embodiment provides an LED driving system, including power input circuit, filter circuit, LED driving control special circuit UC10 and LED circuit, the input end of power input circuit is used for connecting 5V+, the input end of filter circuit is connected with the output end of power input circuit, the LED driving control special circuit UC10 is TM1640, the 17th pin of LED driving control special circuit UC10 is connected with the output end of filter circuit, the 7th pin of LED driving control special circuit UC10 is used for connecting data input, the 7th pin of LED driving control special circuit UC10 is used for connecting clock input, the 6th pin of LED driving control special circuit UC10 is grounded, the input end of LED circuit is connected with the 9th pin, 10th pin, 11th pin, 12th pin, 13th pin, 14th pin, 15th pin, 16th pin of LED driving control special circuit UC10, and the output end of LED is connected with the 1st pin, 2nd pin, 3rd pin, 4th pin, 5th pin, 18th pin, 19th pin, 20th pin, 21st pin, 22nd pin, 23rd pin, 24th pin, 25th pin, 26th pin, 27th pin, 28th pin of LED driving control special circuit UC10.

[0023] In the embodiment, the power input circuit includes magnetic bead FB04, voltage stabilizer UB01, capacitor CB47, capacitor CB48, resistance RB24 and resistance RB25, one end of magnetic bead FB04 is used for connecting 5V+, the other end of magnetic bead FB04 is connected with one end of capacitor CB47, one end of capacitor CB48 and the 3rd pin of voltage stabilizer UB01, the other end of capacitor CB47, the other end of capacitor CB48 and one end of resistance R25 are grounded, the 1st pin of voltage stabilizer UB01 is connected with the other end of resistance RB25 and one end of resistance RB24, the 2nd pin of voltage stabilizer UB01 is connected with the other end of resistance RB24 and the input end of filter circuit.

[0024] In the embodiment, the filter circuit comprises a capacitor CC01 and an electrolytic capacitor EC13; the positive pole of the electrolytic capacitor EC13 is connected with the No. 2 pin of the voltage stabilizer UB01, one end of the capacitor CC01 and the No. 17 pin of the LED driving control special circuit UC10; the negative pole of the electrolytic capacitor EC13 and the other end of the capacitor CC01 are grounded.

[0025] In the embodiment, the LED driving system further comprises a resistor RC62, a resistor RC63, a capacitor CC02, a resistor RC64, a capacitor CC03 and a resistor RC65; one end of the resistor RC62, one end of the resistor RC65 and one end of the capacitor CC02 are connected with the No. 8 pin of the LED driving control special circuit UC10; the other end of the capacitor CC02 is grounded; the other end of the resistor RC65 is used for connecting clock input; one end of the resistor RC63, one end of the resistor RC64 and one end of the capacitor CC32 are connected with the No. 7 pin of the LED driving control special circuit UC10; the other end of the capacitor CC03 is grounded; the other end of the resistor RC64 is used for connecting data input; the other end of the resistor RC62 and the other end of the resistor RC63 are connected with VDD3V3.

[0026] In the embodiment, the LED circuit comprises a main volume indication unit; the main volume indication unit comprises a capacitor CB17, and light emitting diodes LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8, LED9 and LED10; one end of the capacitor CB7 and the positive poles of the light emitting diodes LED1, LED2, LED3, LED4, LED5, LED6, LED7 and LED8 are connected with the pin 16 of the LED driving control special circuit UC10; the other end of the capacitor CB17 is grounded; the positive poles of the light emitting diodes LED9 and LED10 are connected with the pin 15 of the LED driving control special circuit UC10; the negative poles of the light emitting diodes LED1 and LED9 are connected with the pin 18 of the LED driving control special circuit UC10; the negative poles of the light emitting diodes LED2 and LED10 are connected with the pin 19 of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED3 is connected with the pin 20 of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED4 is connected with the pin 21 of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED5 is connected with the pin 22 of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED6 is connected with the pin 23 of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED7 is connected with the pin 24 of the LED driving control special circuit UC10; and the negative pole of the light emitting diode LED8 is connected with the pin 25 of the LED driving control special circuit UC10.

[0027] In the embodiment, the LED circuit further comprises a first channel volume indication unit; the first channel volume indication unit comprises light emitting diodes LED 12, LED 13, LED 14, LED 15, LED 16, LED 17, LED 18, LED 19, LED 20 and LED 21; the anode of the light emitting diode LED 12, the anode of LED 13, the anode of LED 14, the anode of LED 15 and the anode of LED 16 are all connected with pin 15 of the LED driving control special circuit UC10; the anode of the light emitting diode LED 17, the anode of LED 18, the anode of LED 19, the anode of LED 20 and the anode of LED 21 are all connected with pin 14 of the LED driving control special circuit UC10; the cathode of the light emitting diode LED 12 and the cathode of LED 20 are both connected with pin 21 of the LED driving control special circuit UC10; the cathode of the light emitting diode LED 13 and the cathode of LED 21 are both connected with pin 22 of the LED driving control special circuit UC10; the cathode of the light emitting diode LED 14 is connected with pin 23 of the LED driving control special circuit UC10; the cathode of the light emitting diode LED 15 is connected with pin 24 of the LED driving control special circuit UC10; the cathode of the light emitting diode LED 16 is connected with pin 25 of the LED driving control special circuit UC10; the cathode of the light emitting diode LED 17 is connected with pin 18 of the LED driving control special circuit UC10; the cathode of the light emitting diode LED 18 is connected with pin 19 of the LED driving control special circuit UC10; the cathode of the light emitting diode LED 19 is connected with pin 20 of the LED driving control special circuit UC10.

[0028] In the embodiment, the LED circuit further comprises a second channel volume indication unit; the second channel volume indication unit comprises light emitting diodes LED22, LED23, LED24, LED25, LED26, LED27, LED28, LED29, LED30 and LED31; the positive pole of the light emitting diode LED22, the positive pole of the LED23 and the positive pole of the LED24 are all connected with the pin 14 of the LED driving control special circuit UC10; the positive pole of the light emitting diode LED25, the positive pole of the LED26, the positive pole of the LED27, the positive pole of the LED28, the positive pole of the LED29, the positive pole of the LED30 and the positive pole of the LED31 are all connected with the pin 13 of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED22 and the negative pole of the LED30 are all connected with the pin 23 of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED23 and the negative pole of the LED31 are all connected with the pin 24 of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED24 is connected with the pin 25 of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED25 is connected with the pin 18 of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED26 is connected with the pin 19 of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED27 is connected with the pin 20 of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED28 is connected with the pin 21 of the LED driving control special circuit UC10; and the negative pole of the light emitting diode LED29 is connected with the pin 22 of the LED driving control special circuit UC10.

[0029] In the embodiment, the LED circuit further comprises a third channel volume indication unit; the third channel volume indication unit comprises light emitting diodes LED32, LED33, LED34, LED35, LED36, LED37, LED38, LED39, LED40 and LED41; the positive electrode of the light emitting diode LED32 is connected with pin 13 of the LED driving control special circuit UC10; the negative electrode of the light emitting diode LED32 is connected with pin 25 of the LED driving control special circuit UC10; the positive electrode of the light emitting diode LED33, the positive electrode of the LED34, the positive electrode of the LED35, the positive electrode of the LED36, the positive electrode of the LED37, the positive electrode of the LED38, the positive electrode of the LED39, the positive electrode of the LED40 are all connected with pin 12 of the LED driving control special circuit UC10; the positive electrode of the light emitting diode LED41 is connected with pin 11 of the LED driving control special circuit UC10; the negative electrode of the light emitting diode LED33, the negative electrode of the LED41 are all connected with pin 26 of the LED driving control special circuit UC10; the negative electrode of the light emitting diode LED34 is connected with pin 27 of the LED driving control special circuit UC10; the negative electrode of the light emitting diode LED35 is connected with pin 28 of the LED driving control special circuit UC10; the negative electrode of the light emitting diode LED36 is connected with pin 1 of the LED driving control special circuit UC10; the negative electrode of the light emitting diode LED37 is connected with pin 2 of the LED driving control special circuit UC10; the negative electrode of the light emitting diode LED38 is connected with pin 3 of the LED driving control special circuit UC10; the negative electrode of the light emitting diode LED39 is connected with pin 4 of the LED driving control special circuit UC10; the negative electrode of the light emitting diode LED40 is connected with pin 5 of the LED driving control special circuit UC10.

[0030] In the embodiment, the LED circuit further comprises a fourth channel volume indication unit; the fourth channel volume indication unit comprises light emitting diodes LED42, LED43, LED44, LED45, LED46, LED47, LED48, LED49, LED50 and LED51; the positive pole of the light emitting diode LED42, the positive pole of the LED43, the positive pole of the LED44, the positive pole of the LED45, the positive pole of the LED46, the positive pole of the LED47 and the positive pole of the LED48 are connected with the No. 11 pin of the LED driving control special circuit UC10; the positive pole of the light emitting diode LED49, the positive pole of the LED50 and the positive pole of the LED51 are connected with the No. 10 pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED42 is connected with the No. 27 pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED43 is connected with the No. 28 pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED44 is connected with the No. 1 pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED45 is connected with the No. 2 pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED46 is connected with the No. 3 pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED47 is connected with the No. 4 pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED48 is connected with the No. 5 pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED49 is connected with the No. 26 pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED50 is connected with the No. 27 pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED51 is connected with the No. 28 pin of the LED driving control special circuit UC10.

[0031] In the embodiment, the LED circuit further comprises light emitting diodes LED52, LED53, LED54, LED55, LED56, LED57, LED58, LED59, LED60, LED66 and LED68; the positive pole of the light emitting diode LED52, the positive pole of the LED53, the positive pole of the LED54, the positive pole of the LED55, the positive pole of the LED56 are all connected with the No.10 pin of the LED driving control special circuit UC10; the positive pole of the light emitting diode LED57, the positive pole of the LED58, the positive pole of the LED59, the positive pole of the LED60, the positive pole of the LED66, the positive pole of the LED68 are all connected with the No.9 pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED52, the negative pole of the LED60 are all connected with the No.1 pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED53, the negative pole of the LED66 are all connected with the No.2 pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED54, the negative pole of the LED68 are all connected with the No.3 pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED55 is connected with the No.4 pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED56 is connected with the No.5 pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED57 is connected with the No.26 pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED58 is connected with the No.27 pin of the LED driving control special circuit UC10; the negative pole of the light emitting diode LED59 is connected with the No.28 pin of the LED driving control special circuit UC10.

[0032] Among them, the light emitting diode LED 52 is indicated as the first channel (CH1), the light emitting diode LED 53 is indicated as the first channel clipping (CH1_CLIP), which is used to indicate whether the audio signal of the first channel exceeds the allowed range; the light emitting diode LED 54 is indicated as the second channel (CH2), and the light emitting diode L55 is indicated as the second channel clipping (CH2_CLIP), which is used to indicate whether the audio signal of the second channel exceeds the allowed range; the light emitting diode LED 56 is indicated as the third channel (CH2); the light emitting diode LED 57 is indicated as the fourth channel (CH4); the light emitting diode LED 58 is indicated as MIC / LINE, which is used to indicate the type of the current input signal, and the light emitting diode LED 58 is bright when the MIC input; the light emitting diode LED 59 is indicated as PHONTOM, which is used to indicate whether the phantom power is turned on, and the light emitting diode LED 59 is bright when the phantom power is turned on; the light emitting diode LED 60 is indicated as DUCKING, which is used to indicate whether the ducking function is turned on, and the light emitting diode LED 60 is bright when the ducking function is turned on; the light emitting diode LED 60 is indicated as power, which is used to indicate whether the power is turned on, and the light emitting diode LED 60 is bright when the power is turned on.

[0033] The working principle of the LED driving system in the embodiment is as follows:

[0034] The power input circuit receives a 5V direct current power supply, filters the direct current power supply through the magnetic bead FB04, the capacitor CB47 and the capacitor CB48, stabilizes the filtered direct current power supply through the voltage stabilizer UB01 (LM1117-ADJ), divides the voltage after the stabilization through the resistor RB24 and the resistor RB25, and obtains a 4.0V voltage.

[0035] The filter circuit filters the 4.0V voltage through the capacitor CC01 and the electrolytic capacitor EC13, and provides a stable input voltage for the LED driving control special circuit UC10.

[0036] LED driving control:

[0037] The LED driving control special circuit UC10 (TM1640) receives the filtered power supply voltage, and controls the lighting and extinguishing of each LED according to the data input and clock input signals through internal logic control.

[0038] The multiple output pins (9-16 pins, 18-28 pins) of the UC10 are respectively connected to each light emitting diode of the LED circuit, and the level state of the output pin is controlled to realize accurate control of each LED.

[0039] LED circuit:

[0040] The LED circuit comprises a plurality of volume indication units and state indication LEDs, such as a main volume indication unit, first to fourth channel volume indication units, and various state indication LEDs (such as CH1 indication, CH1_CL IP indication, CH2 indication, and the like).

[0041] In use, when the UC10 receives a corresponding control signal, the corresponding LED is turned on or off by controlling the level state of each output pin according to the preset logic and timing, so as to realize the visual indication of the volume size and state information. On the one hand, through the joint action of the power input circuit and the filter circuit, a stable and pure power voltage is provided for the LED drive control special circuit, so as to effectively reduce the risk of LED flickering or uneven brightness caused by power voltage fluctuation. On the other hand, the LED drive control special circuit UC10 has multiple output pins and rich control functions, and can realize accurate control of multiple LEDs. By adjusting the data input and clock input signals, the on and off states of the LEDs can be flexibly changed to meet different application requirements. On the other hand, the LED circuit comprises a plurality of channel volume indication units and state indication LEDs, so as to realize comprehensive visual indication of the volume size and state information. Further, more intuitive and clear operation feedback is provided for the user.

[0042] Although the present application has been described with reference to a number of explanatory embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the scope of the principles disclosed herein. More particularly, many modifications and variations of the present subject matter can be made in the light of the above teachings. The components and / or layout of the subject combination layout can be varied and modified within the scope of the present disclosure, drawings, and claims. Other uses will also become apparent to those of ordinary skill in the art.

Claims

1. An LED driving system, characterized by, It includes: Power input circuit, the input end of the power input circuit is used for 5V+; Filter circuit, the input end of the filter circuit is connected with the output end of the power input circuit; LED drive control special circuit UC10, the LED drive control special circuit UC10 is TM1640, the No. 17 pin of the LED drive control special circuit UC10 is connected with the output end of the filter circuit; the No. 7 pin of the LED drive control special circuit UC10 is used for connecting data input, the No. 7 pin of the LED drive control special circuit UC10 is used for connecting clock input; the No. 6 pin of the LED drive control special circuit UC10 is grounded; LED circuit, the input end of the LED circuit is connected with the No. 9 pin, No. 10 pin, No. 11 pin, No. 12 pin, No. 13 pin, No. 14 pin, No. 15 pin, No. 16 pin of the LED drive control special circuit UC10; the output end of the LED is connected with the No. 1 pin, No. 2 pin, No. 3 pin, No. 4 pin, No. 5 pin, No. 18 pin, No. 19 pin, No. 20 pin, No. 21 pin, No. 22 pin, No. 23 pin, No. 24 pin, No. 25 pin, No. 26 pin, No. 27 pin, No. 28 pin of the LED drive control special circuit UC10.

2. The LED drive system according to claim 1, wherein: The power input circuit includes a magnetic bead FB04, a voltage stabilizer UB01, a capacitor CB47, a capacitor CB48, a resistor RB24 and a resistor RB25; One end of the magnetic bead FB04 is used for connecting 5V+; The other end of the magnetic bead FB04 is connected with one end of the capacitor CB47, one end of the capacitor CB48 and the No. 3 pin of the voltage stabilizer UB01; The other end of the capacitor CB47, the other end of the capacitor CB48 and one end of the resistor R25 are all grounded; The No. 1 pin of the voltage stabilizer UB01 is connected with the other end of the resistor RB25 and one end of the resistor RB24; The No. 2 pin of the voltage stabilizer UB01 is connected with the other end of the resistor RB24 and the input end of the filter circuit.

3. The LED drive system according to claim 2, wherein: The filter circuit includes a capacitor CC01 and an electrolytic capacitor EC13; The positive electrode of the electrolytic capacitor EC13 is connected with the No. 2 pin of the voltage stabilizer UB01, one end of the capacitor CC01 and the No. 17 pin of the LED drive control special circuit UC10; The negative electrode of the electrolytic capacitor EC13 and the other end of the capacitor CC01 are both grounded.

4. The LED drive system according to claim 3, wherein: It further includes a resistor RC62, a resistor RC63, a capacitor CC02, a resistor RC64, a capacitor CC03 and a resistor RC65; One end of the resistor RC62, one end of the resistor RC65 and one end of the capacitor CC02 are all connected with the No. 8 pin of the LED drive control special circuit UC10; The other end of the capacitor CC02 is grounded; The other end of the resistor RC65 is used for connecting clock input; One end of the resistor RC63, one end of the resistor RC64, and one end of the capacitor CC32 are connected to pin 7 of the LED drive control special circuit UC10; The other end of the capacitor CC03 is grounded; The other end of the resistor RC64 is used for data input; The other end of the resistor RC62 and the other end of the resistor RC63 are both connected to VDD3V3.

5. The LED drive system according to claim 4, wherein: The LED circuit comprises a main volume indication unit; The main volume indication unit comprises a capacitor CB17, and light emitting diodes LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8, LED9, and LED10; One end of the capacitor CB7, and the positive poles of the light emitting diodes LED1, LED2, LED3, LED4, LED5, LED6, LED7, and LED8 are all connected to pin 16 of the LED drive control special circuit UC10; The other end of the capacitor CB17 is grounded; The positive poles of the light emitting diodes LED9 and LED10 are both connected to pin 15 of the LED drive control special circuit UC10; The negative poles of the light emitting diodes LED1 and LED9 are both connected to pin 18 of the LED drive control special circuit UC10; The negative poles of the light emitting diodes LED2 and LED10 are both connected to pin 19 of the LED drive control special circuit UC10; The negative pole of the light emitting diode LED3 is connected to pin 20 of the LED drive control special circuit UC10; The negative pole of the light emitting diode LED4 is connected to pin 21 of the LED drive control special circuit UC10; The negative pole of the light emitting diode LED5 is connected to pin 22 of the LED drive control special circuit UC10; The negative pole of the light emitting diode LED6 is connected to pin 23 of the LED drive control special circuit UC10; The negative pole of the light emitting diode LED7 is connected to pin 24 of the LED drive control special circuit UC10; The negative pole of the light emitting diode LED8 is connected to pin 25 of the LED drive control special circuit UC10.

6. The LED drive system according to claim 5, wherein: The LED circuit further comprises a first channel volume indication unit; The first channel volume indication unit comprises light emitting diodes LED12, LED13, LED14, LED15, LED16, LED17, LED18, LED19, LED20, and LED21; The positive poles of the light emitting diodes LED12, LED13, LED14, LED15, and LED16 are all connected to pin 15 of the LED drive control special circuit UC10; The anode of the light emitting diode LED 17, the anode of the LED 18, the anode of the LED 19, the anode of the LED 20 and the anode of the LED 21 are connected with the pin 14 of the LED drive control special circuit UC10; The cathode of the light emitting diode LED 12, the cathode of the LED 20 are connected with the pin 21 of the LED drive control special circuit UC10; The cathode of the light emitting diode LED 13, the cathode of the LED 21 are connected with the pin 22 of the LED drive control special circuit UC10; The cathode of the light emitting diode LED 14 is connected with the pin 23 of the LED drive control special circuit UC10; The cathode of the light emitting diode LED 15 is connected with the pin 24 of the LED drive control special circuit UC10; The cathode of the light emitting diode LED 16 is connected with the pin 25 of the LED drive control special circuit UC10; The cathode of the light emitting diode LED 17 is connected with the pin 18 of the LED drive control special circuit UC10; The cathode of the light emitting diode LED 18 is connected with the pin 19 of the LED drive control special circuit UC10; The cathode of the light emitting diode LED 19 is connected with the pin 20 of the LED drive control special circuit UC10.

7. The LED drive system according to claim 6, characterized in that: The LED circuit further comprises a second channel volume indication unit; The second channel volume indication unit comprises light emitting diodes LED 22, LED 23, LED 24, LED 25, LED 26, LED 27, LED 28, LED 29, LED 30 and LED 31; The anode of the light emitting diode LED 22, the anode of the LED 23, the anode of the LED 24 are connected with the pin 14 of the LED drive control special circuit UC10; The anode of the light emitting diode LED 25, the anode of the LED 26, the anode of the LED 27, the anode of the LED 28, the anode of the LED 29, the anode of the LED 30, the anode of the LED 31 are connected with the pin 13 of the LED drive control special circuit UC10; The cathode of the light emitting diode LED 22, the cathode of the LED 30 are connected with the pin 23 of the LED drive control special circuit UC10; The cathode of the light emitting diode LED 23, the cathode of the LED 31 are connected with the pin 24 of the LED drive control special circuit UC10; The cathode of the light emitting diode LED 24 is connected with the pin 25 of the LED drive control special circuit UC10; The cathode of the light emitting diode LED 25 is connected with the pin 18 of the LED drive control special circuit UC10; The cathode of the light emitting diode LED 26 is connected with the pin 19 of the LED drive control special circuit UC10; The cathode of the light emitting diode LED 27 is connected with the pin 20 of the LED drive control special circuit UC10; The negative pole of the light emitting diode LED 28 is connected with the pin 21 of the LED drive control special circuit UC 10; The negative pole of the light emitting diode LED 29 is connected with the pin 22 of the LED drive control special circuit UC 10.

8. The LED drive system according to claim 7, characterized in that: The LED circuit further comprises a third channel volume indication unit; The third channel volume indication unit comprises light emitting diodes LED 32, LED 33, LED 34, LED 35, LED 36, LED 37, LED 38, LED 39, LED 40 and LED 41; The positive pole of the light emitting diode LED 32 is connected with the pin 13 of the LED drive control special circuit UC 10; The negative pole of the light emitting diode LED 32 is connected with the pin 25 of the LED drive control special circuit UC 10; The positive pole of the light emitting diode LED 33, the positive pole of the light emitting diode LED 34, the positive pole of the light emitting diode LED 35, the positive pole of the light emitting diode LED 36, the positive pole of the light emitting diode LED 37, the positive pole of the light emitting diode LED 38, the positive pole of the light emitting diode LED 39, the positive pole of the light emitting diode LED 40 are all connected with the pin 12 of the LED drive control special circuit UC 10; The positive pole of the light emitting diode LED 41 is connected with the pin 11 of the LED drive control special circuit UC 10; The negative pole of the light emitting diode LED 33, the negative pole of the light emitting diode LED 41 are all connected with the pin 26 of the LED drive control special circuit UC 10; The negative pole of the light emitting diode LED 34 is connected with the pin 27 of the LED drive control special circuit UC 10; The negative pole of the light emitting diode LED 35 is connected with the pin 28 of the LED drive control special circuit UC 10; The negative pole of the light emitting diode LED 36 is connected with the pin 1 of the LED drive control special circuit UC 10; The negative pole of the light emitting diode LED 37 is connected with the pin 2 of the LED drive control special circuit UC 10; The negative pole of the light emitting diode LED 38 is connected with the pin 3 of the LED drive control special circuit UC 10; The negative pole of the light emitting diode LED 39 is connected with the pin 4 of the LED drive control special circuit UC 10; The negative pole of the light emitting diode LED 40 is connected with the pin 5 of the LED drive control special circuit UC 10.

9. The LED drive system according to claim 8, characterized in that: The LED circuit further comprises a fourth channel volume indication unit; The fourth channel volume indication unit comprises light emitting diodes LED 42, LED 43, LED 44, LED 45, LED 46, LED 47, LED 48, LED 49, LED 50 and LED 51; The positive pole of the light emitting diode LED 42, the positive pole of the light emitting diode LED 43, the positive pole of the light emitting diode LED 44, the positive pole of the light emitting diode LED 45, the positive pole of the light emitting diode LED 46, the positive pole of the light emitting diode LED 47, the positive pole of the light emitting diode LED 48 are all connected with the pin 11 of the LED drive control special circuit UC 10; The anode of the light emitting diode LED 49, the anode of the LED 50, the anode of the LED 51 are connected with the pin 10 of the LED driving control special circuit UC10; The cathode of the light emitting diode LED 42 is connected with the pin 27 of the LED driving control special circuit UC10; The cathode of the light emitting diode LED 43 is connected with the pin 28 of the LED driving control special circuit UC10; The cathode of the light emitting diode LED 44 is connected with the pin 1 of the LED driving control special circuit UC10; The cathode of the light emitting diode LED 45 is connected with the pin 2 of the LED driving control special circuit UC10; The cathode of the light emitting diode LED 46 is connected with the pin 3 of the LED driving control special circuit UC10; The cathode of the light emitting diode LED 47 is connected with the pin 4 of the LED driving control special circuit UC10; The cathode of the light emitting diode LED 48 is connected with the pin 5 of the LED driving control special circuit UC10; The cathode of the light emitting diode LED 49 is connected with the pin 26 of the LED driving control special circuit UC10; The cathode of the light emitting diode LED 50 is connected with the pin 27 of the LED driving control special circuit UC10; The cathode of the light emitting diode LED 51 is connected with the pin 28 of the LED driving control special circuit UC10.

10. The LED driving system according to claim 9, characterized in that: The LED circuit further comprises light emitting diodes LED 52, LED 53, LED 54, LED 55, LED 56, LED 57, LED 58, LED 59, LED 60, LED 66 and LED 68; The anode of the light emitting diode LED 52, the anode of the LED 53, the anode of the LED 54, the anode of the LED 55, the anode of the LED 56 are connected with the pin 10 of the LED driving control special circuit UC10; The anode of the light emitting diode LED 57, the anode of the LED 58, the anode of the LED 59, the anode of the LED 60, the anode of the LED 66, the anode of the LED 68 are connected with the pin 9 of the LED driving control special circuit UC10; The cathode of the light emitting diode LED 52, the cathode of the LED 60 are connected with the pin 1 of the LED driving control special circuit UC10; The cathode of the light emitting diode LED 53, the cathode of the LED 66 are connected with the pin 2 of the LED driving control special circuit UC10; The cathode of the light emitting diode LED 54, the cathode of the LED 68 are connected with the pin 3 of the LED driving control special circuit UC10; The cathode of the light emitting diode LED 55 is connected with the pin 4 of the LED driving control special circuit UC10; The cathode of the light emitting diode LED 56 is connected with the pin 5 of the LED driving control special circuit UC10; The negative pole of the light emitting diode LED 57 is connected to the No. 26 pin of the LED drive control special circuit UC10; The negative pole of the light emitting diode LED 58 is connected to the No. 27 pin of the LED drive control special circuit UC10; The negative pole of the light emitting diode LED 59 is connected to the No. 28 pin of the LED drive control special circuit UC10.

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