LED lamp driving circuit with voice control function

Abstract

The utility model provides an LED lamp driving circuit with a voice control function, a touch control module is used for outputting a touch control signal, and a WIFI module is used for outputting a voice signal sent by an external system. The master control module can perform pulse width modulation operation on the touch signal and can generate a white light signal and a warm light signal. Or the main control module can perform pulse width modulation operation on the voice signal, and can generate a white light signal and a warm light signal. The driving module can carry out voltage stabilization operation on the white light signal and can generate a white light adjusting signal. The driving module can carry out voltage stabilization operation on the warm light signal and can generate a warm light adjusting signal. The LED lamp module is used for receiving the white light adjusting signal and the warm light adjusting signal, the white light adjusting signal can drive the white light LED lamp and adjust the brightness of the white light LED lamp, the warm light adjusting signal can drive the white light LED lamp and adjust the brightness of the warm light LED lamp, and then the color temperature of the LED lamp module is adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of circuits, and in particular to an LED lamp driving circuit with a voice control function. Background Art

[0002] In modern society, LED desk lamps use LEDs as their light source. Due to their high efficiency and energy-saving advantages, LED desk lamps are widely used in daily life. They can be used for reading, writing, working, or as auxiliary lighting in areas such as bedrooms and living rooms. However, existing LED desk lamps have relatively limited functions and can only be controlled manually. Therefore, existing LED desk lamps cannot meet the diverse needs of users.

[0003] Therefore, it is necessary to provide an LED lamp driving circuit with voice control function to solve the above technical problems. Utility Model Content

[0004] The utility model provides an LED lamp driving circuit with a voice control function, which effectively solves the technical problem that the existing LED desk lamp cannot meet the various usage requirements of users.

[0005] The utility model provides an LED lamp driving circuit with a voice control function, which includes:

[0006] A touch module, used for outputting touch signals;

[0007] WIFI module, used to output voice signals sent by external systems;

[0008] a main control module, configured to perform a pulse width modulation operation on the touch signal to generate a white light signal and a warm light signal, or to perform a pulse width modulation operation on the voice signal to generate a white light signal and a warm light signal;

[0009] A driving module, configured to perform a voltage stabilization operation on the white light signal to generate a white light adjustment signal; and to perform a voltage stabilization operation on the warm light signal to generate a warm light adjustment signal;

[0010] An LED lamp module includes a white light LED lamp and a warm light LED lamp. The LED lamp module is used to receive the white light adjustment signal and the warm light adjustment signal. The white light adjustment signal is used for the white light LED lamp and adjusts the brightness of the white light LED lamp. The warm light adjustment signal is used to drive the warm light LED lamp and adjust the brightness of the warm light LED lamp, thereby adjusting the color temperature of the LED lamp module.

[0011] Furthermore, the main control module includes a main control chip, and the main control chip includes a touch input pin, a voice input pin, a white light output pin, and a warm light output pin. The touch input pin is connected to the touch module, and the touch input pin is used to input a touch signal. The voice input pin is connected to the WIFI module, and the voice input pin is used to input a voice signal. The main control chip is used to perform pulse width modulation operation on the touch signal or the voice signal. The white light output pin is used to output a white light signal, and the warm light output pin is used to output a warm light signal.

[0012] The driving module includes a first driving chip, the first driving chip includes a white light input pin and a white light adjustment pin, the white light input pin is connected to the white light output pin, the white light input pin is used to input a white light signal, the first driving chip is used to perform a voltage stabilization operation on the white light signal, the white light adjustment pin is connected to the white light LED lamp, and the white light adjustment pin is used to output the white light adjustment signal;

[0013] The driving module also includes a second driving chip, which includes a warm light input pin and a warm light adjustment pin. The warm light input pin is connected to the warm light output pin, and the warm light input pin is used to input a warm light signal. The second driving chip is used to perform voltage stabilization on the warm light signal, and the warm light adjustment pin is connected to the warm light LED lamp, and the warm light adjustment pin is used to output a warm light adjustment signal.

[0014] Furthermore, the LED lamp driving circuit includes a power supply, which is used to output a power supply voltage. The first driving chip includes a first power supply pin, which is connected to the power supply. The power supply voltage is used to power the first driving chip. The driving module includes a first filter capacitor and a second filter capacitor. One end of the first filter capacitor is connected to the first power supply pin, and the other end of the first filter capacitor is grounded. The second filter capacitor is connected in parallel with the first filter capacitor. The first filter capacitor and the second filter capacitor are used to filter out interference from the power supply voltage.

[0015] Furthermore, the first driver chip also includes a first detection pin, and the driver module also includes a first detection resistor and a second detection resistor, the first detection pin is connected to the white light adjustment pin, one end of the first detection resistor is connected to the first power supply pin, and the other end of the first detection resistor is connected to the white light adjustment pin, the second detection resistor is connected in parallel with the first detection resistor, the first detection resistor, the second detection resistor, the first power supply pin, and the first detection pin are used to form a first detection unit, the first detection unit is used to detect the current of the white light adjustment signal, and the first detection resistor and the second detection resistor are also used to adjust the current of the white light adjustment signal.

[0016] Furthermore, the driving module also includes a first coupling capacitor and a second coupling capacitor, one end of the first coupling capacitor is connected to the first power supply pin, and the other end of the first coupling capacitor is connected to the white light adjustment pin, and the first coupling capacitor is used to filter the low-frequency interference of the power supply to the white light adjustment pin, one end of the second coupling capacitor is connected to the white light adjustment pin, and the other end of the second coupling capacitor is grounded, and the second coupling capacitor is used to filter the low-frequency interference of the ground end to the white light adjustment pin.

[0017] Furthermore, the driving module includes a first magnetic bead, which is connected in series between the white light adjustment pin and the white light LED lamp, and is used to filter out high-frequency interference of the white light adjustment signal.

[0018] Furthermore, the driving module includes a first absorption resistor and a first absorption capacitor, one end of the first absorption capacitor is connected to the first power supply pin, the other end of the first absorption capacitor is connected to the first absorption resistor, the first absorption resistor is connected to the white light adjustment pin, and the first absorption capacitor and the first absorption resistor are used to absorb high-frequency interference of the supply voltage;

[0019] The driving module includes a second absorption resistor and a second absorption capacitor, one end of the second absorption capacitor is connected to the white light adjustment pin, the other end of the second absorption capacitor is connected to one end of the second absorption resistor, and the other end of the second absorption resistor is grounded. The second absorption capacitor and the second absorption resistor are used to absorb high-frequency interference from the ground end to the white light adjustment pin.

[0020] Furthermore, the LED lamp driving circuit includes a wireless charging module, which is connected to the power supply and the main control module. When the main control module detects that there is an external device at the location of the wireless charging module, the wireless charging module is used to perform wireless charging operations on the external device based on the power supply.

[0021] Furthermore, the LED lamp driving circuit further includes a light sensing module, which is connected to the main control module and is used to generate a light sensing signal based on the light intensity of the external environment;

[0022] When the LED lamp driving circuit is in the intelligent photosensor mode, the main control module adjusts the white light signal based on the photosensor signal, thereby adjusting the brightness of the white light LED lamp; the main control module adjusts the warm light signal based on the photosensor signal, thereby adjusting the brightness of the warm light LED lamp.

[0023] Furthermore, the LED lamp driving circuit further includes a human body sensing module and a night light module, wherein the human body sensing module is configured to generate a sensing signal based on sensing human activity, and the main control module generates a night light driving signal based on the sensing signal, and the night light inside the night light module is turned on based on the night light driving signal;

[0024] When the LED lamp driving circuit is in the night light mode, the main control module is used to determine whether the current time is daytime or nighttime based on the light sensing signal. If the current time is daytime, the main control module does not generate a night light driving signal; if the current time is nighttime, the main control module generates a night light driving signal based on the sensing signal, the night light module is turned on based on the night light driving signal, and the night light is in the on state.

[0025] Compared with the prior art, the present invention has the following beneficial effects: the present invention provides an LED lamp driving circuit with a voice control function, and the LED lamp driving circuit includes a touch module, a WIFI module, a main control module, a driving module, and an LED lamp module. The main control module can perform pulse width modulation operation on the touch signal output by the touch module, and the main control module can generate a white light signal and a warm light signal. Or the main control module is used to perform pulse width modulation operation on the voice signal output by the WIFI module, and the WIFI module can generate a white light signal and a warm light signal. The driving module can perform voltage stabilization operation on the white light signal, and the driving module can generate a white light adjustment signal. The driving module can perform voltage stabilization operation on the warm light signal, and the driving module can generate a warm light adjustment signal. The LED lamp module is used to receive the white light adjustment signal and the warm light adjustment signal, and the white light adjustment signal can adjust the brightness of the white light LED lamp. The warm light adjustment signal can adjust the brightness of the warm light LED lamp, and then the white light adjustment signal and the warm light adjustment signal adjust the color temperature of the LED lamp module.

[0026] Since the LED lamp driving circuit is provided with a WIFI module, the user can use a voice assistant (Tmall Genie, Xiaodu smart speaker, Huawei smart speaker, etc.) to send a voice signal. Furthermore, the LED lamp driving circuit can adjust the color temperature and brightness of the LED lamp through the voice signal. Therefore, the LED lamp driving circuit is relatively rich in functions. It can be controlled not only manually but also by voice. The LED lamp driving circuit can meet the various usage needs of users. In real life, users cannot manually control LED lights when they are busy at work. In the present utility model, users can control the LED lights of the LED lamp driving circuit by voice, so the LED lamp driving circuit can provide convenience for the user's life. The setting of the LED lamp driving circuit effectively solves the technical problem that the existing LED desk lamp cannot meet the various usage needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. The drawings described below are only drawings corresponding to some embodiments of the present invention.

[0028] Figure 1 This is a structural diagram of an embodiment of an LED lamp driving circuit with voice control function of the present invention.

[0029] Figure 2 This is a circuit diagram of the main control module and WIFI module of an embodiment of the LED lamp driving circuit with voice control function of the present invention.

[0030] Figure 3 This is a circuit diagram of a driving module of an embodiment of an LED lamp driving circuit with voice control function of the present invention.

[0031] Figure 4 This is a circuit diagram of a power supply module of an embodiment of an LED lamp driving circuit with voice control function of the present invention.

[0032] Figure 5 This is a circuit diagram of a wireless charging module of an embodiment of an LED lamp driving circuit with voice control function of the present invention.

[0033] Figure 6 This is a circuit diagram of a light sensor module of an embodiment of an LED lamp driving circuit with voice control function of the present invention.

[0034] Figure 7 This is a circuit diagram of a human body sensing module of an embodiment of an LED lamp driving circuit with voice control function of the present invention.

[0035] Figure 8This is a circuit diagram of a night light module of an embodiment of an LED lamp driving circuit with voice control function of the present invention.

[0036] In the figure, 10, LED lamp driving circuit; 11, touch module; 12, WIFI module; 13, main control module; 14, driving module; 15, LED lamp module; 151, white light LED lamp; 152, warm light LED lamp; 16, power supply module; 17, power supply; 18, light sensing module; 181, human body sensing module; 182, night light module; 183, night light; 19, wireless charging module; 191, wireless charging interface. DETAILED DESCRIPTION

[0037] 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 embodiments described 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 those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0038] Directional terms mentioned in this invention, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "side", "top" and "bottom", are only used with reference to the directions of the drawings. The directional terms used are used to illustrate and understand the invention, and are not intended to limit the invention.

[0039] The terms "first" and "second" in the present invention are used for descriptive purposes only and should not be understood as indicating or implying relative importance, nor as limiting the order of precedence.

[0040] In the figures, structurally similar elements are denoted by the same reference numerals.

[0041] Please refer to Figure 1 The utility model provides an LED lamp driving circuit 10 with a voice control function, and the LED lamp driving circuit 10 includes a touch module 11, a WIFI module 12, a main control module 13, a driving module 14, and an LED lamp module 15. The touch module 11 can output a touch signal, and the WIFI module 12 can output a voice signal sent by an external system. The main control module 13 can perform pulse width modulation on the touch signal, and the main control module 13 can generate a white light signal and a warm light signal, and the white light signal and the warm light signal are both PWM signals. Or the main control module 13 can perform pulse width modulation on the voice signal, and the main control module 13 can generate a white light signal and a warm light signal. The driving module 14 can perform a voltage stabilization operation on the white light signal, and the driving module 14 can generate a white light adjustment signal. The driving module 14 can perform a voltage stabilization operation on the warm light signal, and the driving module 14 can generate a warm light adjustment signal.

[0042] Please refer to Figure 1 The LED lamp module 15 includes a white light LED lamp 151 and a warm light LED lamp 152. The LED lamp module 15 can receive a white light adjustment signal and a warm light adjustment signal. The white light adjustment signal can be used to drive the white light LED lamp 151, and the main control chip U2 can output white light signals with different frequencies. White light signals with different frequencies can generate white light adjustment signals with different frequencies through the first driver chip IC1, and white light adjustment signals with different frequencies can adjust the brightness of the white light LED lamp 151. The warm light adjustment signal can be used to drive the warm light LED lamp 152, and the main control chip U2 can output white light signals with different frequencies. White light signals with different frequencies can generate white light adjustment signals with different frequencies through the first driver chip IC1, and white light adjustment signals with different frequencies can adjust the brightness of the white light LED lamp 151. Furthermore, the main control module 13 can control the output time of the white light signal and the warm light signal, and then control the output time of the white light adjustment signal and the warm light adjustment signal, so that the white light adjustment signal and the warm light adjustment signal can adjust the color temperature of the LED lamp module 15.

[0043] Please refer to Figures 2 to 8 The following is a detailed description of the specific structure of the LED lamp driving circuit 10:

[0044] Please refer to Figure 2 , the main control module 13 includes a main control chip U2. The model of the main control chip U2 is DLT8SA20A. The main control chip U2 includes a touch input pin, a voice input pin, a white light output pin TK11 / PWM3 / IO12, and a warm light output pin TK12 / PWM4 / IO13. The touch input pin is connected to the touch module 11, and the touch input pin is used to input touch signals. Among them, the touch pins include touch pin TK13 / PWM5 / IO14, touch pin TK9 / IO10, touch pin TK10 / PWM2 / IO11, and touch pin TK8 / IO9. The touch module 11 includes a first brightness adjustment button TS6, a second brightness adjustment button TS7, a third brightness adjustment button TS8, and a fourth brightness adjustment button TS9. Touch pin TK13 / PWM / IO14 is connected to the first brightness adjustment button TS6, and touch pin TK9 / IO10 is connected to the second brightness adjustment button TS7. The touch pin TK10 / PWM2 / IO11 is connected to the third brightness adjustment button TS7, and the touch pin TK8 / IO9 is connected to the fourth brightness adjustment button TS8. When the user presses the four brightness adjustment buttons, the touch module 11 can output a touch signal.

[0045] Please refer to Figure 2, the voice input pin is connected to the WIFI module 12, and the voice input pin is used to input the voice signal. Among them, the voice input pin includes the voice input pin SDA / TX / IO24 and the voice input pin SCL / RX / IO23. The main control chip U2 is used to perform pulse width modulation operation on the touch signal or voice signal, the white light output pin TK11 / PWM3 / IO12 is used to output the white light signal, and the warm light output pin TK12 / PWM4 / IO13 is used to output the warm light signal. The WIFI module 12 includes a WIFI chip, and the model of the WIFI chip is. The WIFI chip includes a TXD1 pin and a RXD1 pin, and the RXD1 pin is connected to the voice input pin SDA / TX / IO24. The TXD1 pin is connected to the voice input pin SCL / RX / IO23, and the TXD1 pin and the RXD1 pin are used to output voice signals.

[0046] Please refer to Figure 3 , the driving module 14 includes a first driving chip IC1, and the model of the first driving chip IC1 is SY8745. The first driving chip IC1 includes a white light input pin EN and a white light adjustment pin LX. The white light input pin EN is connected to the white light output pin TK11 / PWM3 / IO12, and the white light input pin EN is used to input a white light signal. The first driving chip IC1 is used to perform voltage stabilization operation on the white light signal, the white light adjustment pin LX is connected to the white light LED lamp 151, and the white light adjustment pin LX is used to output a white light adjustment signal. The driving module 14 also includes a second driving chip IC2, and the second driving chip IC2 includes a warm light input pin EN and a warm light adjustment pin LX. The warm light input pin EN is connected to the warm light output pin TK12 / PWM4 / IO13, and the warm light input pin EN is used to input a warm light signal. The second driving chip IC2 is used to perform voltage stabilization operation on the warm light signal, the warm light adjustment pin LX is connected to the warm light LED lamp 152, and the warm light adjustment pin LX is used to output a warm light adjustment signal.

[0047] Please refer to Figure 3The LED lamp driving circuit 10 includes a power supply 17. The power supply 17 is used to output a power supply voltage, which is a voltage of 12V. The first driver chip IC1 includes a first power supply pin VIN, the first power supply pin is connected to the power supply 17, and the power supply voltage is used to power the first driver chip IC1. The driving module 14 includes a first filter capacitor E1 and a second filter capacitor C5, one end of the first filter capacitor E1 is connected to the first power supply pin VIN, and the other end of the first filter capacitor E1 is grounded. The second filter capacitor C5 is connected in parallel with the first filter capacitor E1, and the first filter capacitor E1 and the second filter capacitor C5 are used to filter out interference from the power supply voltage. The driving module 14 also includes a third filter capacitor E3 and a fourth filter capacitor C13. The connection structure of the third filter capacitor E3 and the fourth filter capacitor C13 is similar to the connection structure of the first filter capacitor E1 and the second filter capacitor C5. Please refer to the description of the first filter capacitor E1 and the second filter capacitor C5 for details.

[0048] Please refer to Figure 3 The first driver chip IC1 also includes a first detection pin SEN, and the driver module 14 also includes a first detection resistor R1 and a second detection resistor R2. The first detection pin SEN is connected to the white light adjustment pin LX, one end of the first detection resistor R1 is connected to the first power supply pin VIN, and the other end of the first detection resistor R1 is connected to the white light adjustment pin LX. The second detection resistor R2 is connected in parallel with the first detection resistor R1. The first detection resistor R1, the second detection resistor R2, the first power supply pin VIN, and the first detection pin SEN are used to form a first detection unit. The first detection unit is used to detect the current of the white light adjustment signal, and the first detection resistor R1 and the second detection resistor R2 are also used to adjust the current of the white light adjustment signal. The driver module 14 also includes a third detection resistor R7 and a fourth detection resistor R8. The connection structure of the third detection resistor R7 and the fourth detection resistor R8 is similar to the connection structure of the first detection resistor R1 and the second detection resistor R2. Please refer to the description of the first detection resistor R1 and the second detection resistor R2 for details.

[0049] Please refer to Figure 3The driving module 14 also includes a first coupling capacitor C2 and a second coupling capacitor C8. One end of the first coupling capacitor C2 is connected to the first power supply pin VIN, and the other end of the first coupling capacitor C2 is connected to the white light adjustment pin LX. The first coupling capacitor C2 is used to filter the low-frequency interference of the power supply 17 on the white light adjustment pin LX. One end of the second coupling capacitor C8 is connected to the white light adjustment pin LX, and the other end of the second coupling capacitor C8 is grounded. The second coupling capacitor C8 is used to filter the low-frequency interference of the ground end on the white light adjustment pin LX. The driving module 14 also includes a third coupling capacitor C11 and a fourth coupling capacitor C15. The connection structure of the third coupling capacitor C11 and the fourth coupling capacitor C15 is similar to the connection structure of the first coupling capacitor C2 and the second coupling capacitor C8. Please refer to the description of the first coupling capacitor C2 and the second coupling capacitor C8 for details.

[0050] Please refer to Figure 3 The driver module 14 includes a first magnetic bead L2. The first magnetic bead L2 is connected in series between the white light adjustment pin LX and the white light LED lamp 151. The first magnetic bead L2 is used to filter out high-frequency interference from the white light adjustment signal. The driver module 14 also includes a second magnetic bead L4. The connection structure of the second magnetic bead L4 is similar to that of the first magnetic bead. Please refer to the description of the first magnetic bead L2 for details.

[0051] Please refer to Figure 3 The driving module 14 includes a first absorption resistor R3 and a first absorption capacitor C1. One end of the first absorption capacitor C1 is connected to the first power supply pin VIN, and the other end of the first absorption capacitor C1 is connected to the first absorption resistor R3. The first absorption resistor R3 is connected to the white light adjustment pin LX. The first absorption capacitor C1 and the first absorption resistor R3 are used to absorb high-frequency interference of the power supply voltage. The driving module 14 also includes a third absorption resistor R6 and a third absorption capacitor C7. The connection structure of the third absorption resistor R6 and the third absorption capacitor C7 is similar to the connection structure of the first absorption resistor R3 and the first absorption capacitor C1. Please refer to the description of the first absorption resistor R3 and the first absorption capacitor C1 for details.

[0052] Please refer to Figure 3 The driving module 14 includes a second absorption resistor R6 and a second absorption capacitor C7. One end of the second absorption capacitor C7 is connected to the white light adjustment pin LX, and the other end of the second absorption capacitor C7 is connected to one end of the second absorption resistor R6. The other end of the second absorption resistor R6 is grounded. The second absorption capacitor C7 and the second absorption resistor R6 are used to absorb high-frequency interference from the ground terminal to the white light adjustment pin LX. The driving module 14 also includes a fourth absorption resistor R17 and a fourth absorption capacitor C14. The connection structure of the fourth absorption resistor R17 and the fourth absorption capacitor C14 is similar to the connection structure of the second absorption resistor R6 and the second absorption capacitor C7. Please refer to the description of the second absorption resistor R6 and the second absorption capacitor C7 for details.

[0053] Please refer to Figure 4 The LED lamp driving circuit 10 includes a power supply module 16. The power supply module 16 includes a power supply chip IC3, which includes a VIN pin and an LX pin. The VIN pin is connected to a power supply 17. The power supply chip IC3 performs voltage conversion on the power supply voltage output by the power supply 17, generating a supply voltage. The LX pin is used to output the supply voltage, which is 3.3V.

[0054] Please refer to Figure 5 The LED lamp driving circuit 10 includes a wireless charging module 19, which is connected to the power supply 17 and the main control module 13. When the main control module 13 detects that there is an external device at the location of the wireless charging module 19, the wireless charging module 19 is used to wirelessly charge the external device based on the power supply 17. The wireless charging module 19 includes an infrared emitting tube LED21 and an infrared receiving tube Q1. The infrared emitting tube LED21 is connected to the TK5 / AIN5 / PWM0 / IO6 pin of the main control chip U2. The infrared receiving tube Q1 is connected to the TK6 / AIN6 / PWM1 / IO7 pin of the main control chip U2. The wireless charging module 19 also includes a MOS tube Q2, a transistor Q3 and a wireless charging interface 191. The wireless charging interface 191 can be used to wirelessly charge external devices. The source of the MOS tube Q2 is connected to the power supply 17, and the drain of the MOS tube Q2 is connected to the wireless charging interface 191. The gate of the MOS transistor Q2 is connected to the collector of the transistor Q3, the base of the transistor Q2 is connected to the TK18 / IO19 pin of the main control chip U2, and the emitter of the transistor Q2 is grounded.

[0055] Please refer to Figure 2 and Figure 5 When the main control module 13 detects that there is no external device at the location of the wireless charging module 19, the TK5 / AIN5 / PWM0 / IO6 pin of the main control chip U2 outputs a high-level detection signal. The infrared emitting tube LED21 can emit infrared light based on the high-level detection signal, and the infrared receiving tube Q1 is turned on based on the infrared light emitted by the infrared emitting tube LED21. Based on the conduction of the infrared receiving tube Q1, the infrared receiving tube Q1 outputs a low-level infrared signal, and the TK6 / AIN6 / PWM1 / IO7 pin of the main chip U2 receives a low-level conduction signal. Based on the low-level infrared signal, the TK18 / IO19 pin of the main chip U2 does not output an on-state signal. Therefore, the MOS tube Q2 is in a disconnected state, and the wireless charging interface 191 is not turned on.

[0056] Please refer to Figure 2 and Figure 5When the main control module 13 detects that there is an external device at the location of the wireless charging module 19, the TK5 / AIN5 / PWM0 / IO6 pin of the main control chip U2 sends a low-level detection signal. Based on the low-level detection signal, the infrared emitting tube LED21 does not emit infrared light. Therefore, the infrared receiving tube Q1 is in the cut-off state. The infrared receiving tube Q1 is in the cut-off state, and the infrared receiving tube Q1 outputs a high-level infrared signal. The TK6 / AIN6 / PWM1 / IO7 pin of the main chip U2 receives the high-level infrared signal. Based on the high-level infrared signal, the TK18 / IO19 pin of the main chip U2 outputs a start signal. The MOS tube Q2 is turned on based on the start signal, and then the wireless charging interface 191 is turned on. Therefore, the wireless charging module 19 can perform low-power wireless charging for external devices.

[0057] Please refer to Figure 6 The LED lamp driving circuit 10 also includes a light sensing module 18, which is connected to the main control module 13. The light sensing module 18 is used to generate a light sensing signal based on the light intensity of the external environment. When the LED lamp driving circuit 10 is in the intelligent light sensing mode, the main control module 13 adjusts the white light signal based on the light sensing signal, and then the main control module 13 can adjust the brightness of the white light LED lamp 151. The main control module 13 adjusts the warm light signal based on the light sensing signal, and then the main control module 13 can adjust the brightness of the warm light LED lamp 152. The light sensing module 18 includes a photosensor Q5, one end of which is connected to the LX pin of the power supply module 16, and the other end of the photosensor Q5 is connected to the TK3 / AIN3 / IO4 pin of the main control chip U2. The photosensor Q5 is used to generate a light sensing signal based on the light intensity of the external environment, and the TK17 / IO18 pin is used to receive the light sensing signal.

[0058] Please refer to Figure 2 and Figure 6 When the LED lamp driver circuit 10 is in the intelligent light-sensing mode, the photosensor Q5 generates a light-sensing signal based on the ambient light intensity. The main control chip U2 receives this light-sensing signal via the TK3 / AIN3 / IO4 pin and obtains the voltage of the light-sensing signal. Based on the voltage of the light-sensing signal, the main control chip U2 adjusts the white light signal and the warm light signal, thereby adjusting the brightness of the white light LED lamp 151 and the warm light LED lamp 152.

[0059] Please refer to Figure 7 and Figure 8, the LED lamp driving circuit 10 also includes a human body sensing module 181 and a night light module 182. The human body sensing module 181 is used to generate a sensing signal based on sensing human body activities, the main control module 13 generates a night light driving signal based on the sensing signal, and the night light 183 inside the night light module 182 is turned on based on the night light driving signal. When the LED lamp driving circuit 10 is in the night light mode, the main control module 13 is used to determine whether the current time is daytime or nighttime based on the light sensing signal. If the current time is daytime, the main control module 13 does not generate a night light driving signal. If the current time is nighttime, the main control module 13 generates a night light driving signal based on the sensing signal, the night light module 182 is turned on based on the night light driving signal, and the night light 183 is in the on state.

[0060] Please refer to Figure 2 、 Figure 7 and Figure 8 The human body sensing module 181 includes a pyroelectric infrared sensor PIR1, which includes a REL pin connected to the TK17 / IO18 pin of the main control chip U2. The pyroelectric infrared sensor PIR1 can generate a high-level sensing signal based on human activity. The REL pin is used to output the sensing signal, and the TK17 / IO18 pin is used to receive the sensing signal. The night light module 182 includes a night light 183 and a MOS transistor Q4. One end of the night light 183 is connected to the power supply 17, and the other end is connected to the source of the MOS transistor Q4. The gate of the MOS transistor Q4 is connected to the TK17 / IO18 pin of the main control chip U2, and the source of the MOS transistor Q4 is grounded. Among them, the digital pyroelectric infrared sensor PIR1 generates an infrared signal by sensing human movement in the outside world and transmits it to a high-precision digital intelligent processing chip for processing via differential input. After the signal processing is completed, the digital pyroelectric infrared sensor PIR1 directly outputs the signal.

[0061] Please refer to Figure 2 、 Figure 7 and Figure 8When the LED lamp driving circuit 10 is in the night light mode, the photosensor Q5 can generate a light-sensing signal based on the light intensity of the external environment. The main control chip U2 can receive the light-sensing signal through the TK3 / AIN3 / IO4 pin, and the main control chip U2 can obtain the voltage of the light-sensing signal. Based on the voltage of the light-sensing signal, it is determined whether the current time is daytime or nighttime. If the current time is daytime, the main control chip U2 does not generate a night light driving signal. If the current time is nighttime, and the TK17 / IO18 pin receives the sensing signal generated by the pyroelectric infrared sensor PIR1. The TK19 / IO20 pin of the main control chip U2 outputs a night light driving signal, which is a high-level signal. Then the MOS tube Q4 is turned on, and the night light 183 is in the on state. If the current time is night and the TK17 / IO18 pin does not receive the sensing signal generated by the pyroelectric infrared sensor PIR1, the Night-P pin of the main control chip U2 does not output a high-level night light driving signal, and the MOS tube Q4 is disconnected, and the night light 183 is in the off state.

[0062] The operating principle of the present invention is as follows: When the LED lamp driver circuit 10 is in operation, the user can perform a touch operation on the touch module 11. The touch module 11 can then output a touch signal, which is then received by the touch input pin of the main control chip U2. The main control chip U2 can then perform pulse width modulation on the touch signal. Subsequently, the white light output pin TK11 / PWM3 / IO12 can output a white light signal, and the warm light output pin TK12 / PWM4 / IO13 can output a warm light signal. Next, the white light input pin EN can receive the white light signal, and the first driver chip IC1 can perform voltage regulation on the white light signal. Subsequently, the white light adjustment pin LX can output a white light adjustment signal, which can drive the white light LED lamp 151. Furthermore, the main control chip U2 can output white light signals of different frequencies. White light signals of different frequencies can generate white light adjustment signals of different frequencies through the first driver chip IC1, and these white light adjustment signals of different frequencies can adjust the brightness of the white light LED lamp 151.

[0063] To filter out interference from the power supply voltage, a first filter capacitor E1 and a second filter capacitor C5 are connected in parallel to the first power supply pin VIN. To detect the current of the white light adjustment signal, a first detection resistor R1 and a second detection resistor R2 are connected between the first power supply pin VIN and the white light adjustment pin LX. To filter out low-frequency interference from the power supply 17 on the white light adjustment pin LX, a first coupling capacitor C2 is connected between the first power supply pin VIN and the white light adjustment pin LX. To filter out low-frequency interference from the ground terminal on the white light adjustment pin LX, a second coupling capacitor C8 is connected between the white light adjustment pin LX and the ground terminal. Because a first magnetic bead L2 is connected in series between the white light adjustment pin LX and the white light LED lamp 151, it can filter out high-frequency interference from the white light adjustment signal. Because a first absorption capacitor C1 and a first absorption resistor R3 are connected between the first power supply pin VIN and the white light adjustment pin LX, the first absorption capacitor C1 and the first absorption resistor R3 are used to absorb high-frequency interference from the power supply voltage. Because the second absorption capacitor C7 and the second absorption resistor R6 are connected between the ground terminal and the white light adjustment pin LX, the second absorption capacitor C7 and the second absorption resistor R6 can absorb high-frequency interference from the ground terminal to the white light adjustment pin LX.

[0064] Meanwhile, the warm light input pin EN receives a warm light signal, and the second driver chip IC2 regulates the warm light signal. Subsequently, the warm light adjustment pin LX outputs a warm light adjustment signal, which drives the white LED 151. Furthermore, the main control chip U2 outputs warm light signals of different frequencies. These warm light signals of different frequencies are then used by the second driver chip IC2 to generate warm light adjustment signals of different frequencies, which are then used to adjust the brightness of the warm light LED 152.

[0065] Alternatively, the user can control the external system through voice, so that the external system can send a voice signal to the WIFI module 12. Then, the WIFI module 12 can output the voice signal. Subsequently, the main control chip U2 can perform pulse width modulation operation on the voice signal, and then the white light output pin TK11 / PWM3 / IO12 can output a white light signal, and the warm light output pin TK12 / PWM4 / IO13 can output a warm light signal. Among them, the white light signal can generate a white light adjustment signal, and the white light adjustment signal drives the white light LED lamp 151 and adjusts the brightness of the white light LED lamp 151. Please refer to the description of the above working principle for details. The warm light signal can generate a warm light adjustment signal, and the warm light adjustment signal drives the warm light LED lamp 152 and adjusts the brightness of the warm light LED lamp 152. Please refer to the description of the above working principle for details.

[0066] The utility model provides an LED lamp driving circuit with a voice control function, and the LED lamp driving circuit includes a touch module, a WIFI module, a main control module, a driving module, and an LED lamp module. The main control module can perform pulse width modulation operation on the touch signal output by the touch module, and the main control module can generate a white light signal and a warm light signal. Or the main control module is used to perform pulse width modulation operation on the voice signal output by the WIFI module, and the WIFI module can generate a white light signal and a warm light signal. The driving module can perform voltage stabilization operation on the white light signal, and the driving module can generate a white light adjustment signal. The driving module can perform voltage stabilization operation on the warm light signal, and the driving module can generate a warm light adjustment signal. The LED lamp module is used to receive the white light adjustment signal and the warm light adjustment signal, and the white light adjustment signal can adjust the brightness of the white light LED lamp. The warm light adjustment signal can adjust the brightness of the warm light LED lamp, and then the white light adjustment signal and the warm light adjustment signal adjust the color temperature of the LED lamp module.

[0067] Since the LED lamp driving circuit is provided with a WIFI module, the user can use a voice assistant (Tmall Genie, Xiaodu smart speaker, Huawei smart speaker, etc.) to send a voice signal. Furthermore, the LED lamp driving circuit can adjust the color temperature and brightness of the LED lamp through the voice signal. Therefore, the LED lamp driving circuit is relatively rich in functions. It can be controlled not only manually but also by voice. The LED lamp driving circuit can meet the various usage needs of users. In real life, users cannot manually control LED lights when they are busy at work. In the present utility model, users can control the LED lights of the LED lamp driving circuit by voice, so the LED lamp driving circuit can provide convenience for the user's life. The setting of the LED lamp driving circuit effectively solves the technical problem that the existing LED desk lamp cannot meet the various usage needs of users.

[0068] In summary, although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined by the claims.

Claims

1. An LED lamp driving circuit with voice control function, characterized in that: It includes, A touch module, used for outputting touch signals; WIFI module, used to output voice signals sent by external systems; a main control module, configured to perform a pulse width modulation operation on the touch signal to generate a white light signal and a warm light signal, or to perform a pulse width modulation operation on the voice signal to generate a white light signal and a warm light signal; A driving module, configured to perform a voltage stabilization operation on the white light signal to generate a white light adjustment signal; Used to perform voltage stabilization operation on the warm light signal to generate a warm light adjustment signal; An LED lamp module includes a white light LED lamp and a warm light LED lamp. The LED lamp module is used to receive the white light adjustment signal and the warm light adjustment signal. The white light adjustment signal is used to drive the white light LED lamp and adjust the brightness of the white light LED lamp. The warm light adjustment signal is used to drive the warm light LED lamp and adjust the brightness of the warm light LED lamp, thereby adjusting the color temperature of the LED lamp module.

2. The LED lamp driving circuit with voice control function according to claim 1, characterized in that: The main control module includes a main control chip, which includes a touch input pin, a voice input pin, a white light output pin, and a warm light output pin. The touch input pin is connected to the touch control module and is used to input a touch signal. The voice input pin is connected to the WIFI module and is used to input a voice signal. The main control chip is used to perform pulse width modulation on the touch signal or the voice signal. The white light output pin is used to output a white light signal, and the warm light output pin is used to output a warm light signal. The driving module includes a first driving chip, the first driving chip includes a white light input pin and a white light adjustment pin, the white light input pin is connected to the white light output pin, the white light input pin is used to input a white light signal, the first driving chip is used to perform a voltage stabilization operation on the white light signal, the white light adjustment pin is connected to the white light LED lamp, and the white light adjustment pin is used to output the white light adjustment signal; The driving module also includes a second driving chip, which includes a warm light input pin and a warm light adjustment pin. The warm light input pin is connected to the warm light output pin, and the warm light input pin is used to input a warm light signal. The second driving chip is used to perform voltage stabilization on the warm light signal, and the warm light adjustment pin is connected to the warm light LED lamp, and the warm light adjustment pin is used to output a warm light adjustment signal.

3. The LED lamp driving circuit with voice control function according to claim 2, characterized in that: The LED lamp driving circuit includes a power supply, which is used to output a power supply voltage. The first driver chip includes a first power supply pin, which is connected to the power supply. The power supply voltage is used to power the first driver chip. The driving module includes a first filter capacitor and a second filter capacitor. One end of the first filter capacitor is connected to the first power supply pin, and the other end of the first filter capacitor is grounded. The second filter capacitor is connected in parallel with the first filter capacitor. The first filter capacitor and the second filter capacitor are used to filter out interference from the power supply voltage.

4. The LED lamp driving circuit with voice control function according to claim 3, characterized in that: The first driver chip also includes a first detection pin, and the driver module also includes a first detection resistor and a second detection resistor. The first detection pin is connected to the white light adjustment pin, one end of the first detection resistor is connected to the first power supply pin, and the other end of the first detection resistor is connected to the white light adjustment pin. The second detection resistor is connected in parallel with the first detection resistor. The first detection resistor, the second detection resistor, the first power supply pin, and the first detection pin are used to form a first detection unit. The first detection unit is used to detect the current of the white light adjustment signal. The first detection resistor and the second detection resistor are also used to adjust the current of the white light adjustment signal.

5. The LED lamp driving circuit with voice control function according to claim 3, characterized in that: The driving module also includes a first coupling capacitor and a second coupling capacitor, one end of the first coupling capacitor is connected to the first power supply pin, and the other end of the first coupling capacitor is connected to the white light adjustment pin, and the first coupling capacitor is used to filter the low-frequency interference of the power supply to the white light adjustment pin, one end of the second coupling capacitor is connected to the white light adjustment pin, and the other end of the second coupling capacitor is grounded, and the second coupling capacitor is used to filter the low-frequency interference of the ground end to the white light adjustment pin.

6. The LED lamp driving circuit with voice control function according to claim 2, characterized in that: The driving module includes a first magnetic bead, which is connected in series between the white light adjustment pin and the white light LED lamp. The first magnetic bead is used to filter out high-frequency interference of the white light adjustment signal.

7. The LED lamp driving circuit with voice control function according to claim 3, characterized in that: The driving module includes a first absorption resistor and a first absorption capacitor, one end of the first absorption capacitor is connected to the first power supply pin, the other end of the first absorption capacitor is connected to the first absorption resistor, the first absorption resistor is connected to the white light adjustment pin, and the first absorption capacitor and the first absorption resistor are used to absorb high-frequency interference of the power supply voltage; The driving module includes a second absorption resistor and a second absorption capacitor, one end of the second absorption capacitor is connected to the white light adjustment pin, the other end of the second absorption capacitor is connected to one end of the second absorption resistor, and the other end of the second absorption resistor is grounded. The second absorption capacitor and the second absorption resistor are used to absorb high-frequency interference from the ground end to the white light adjustment pin.

8. The LED lamp driving circuit with voice control function according to claim 3, characterized in that: The LED lamp driving circuit includes a wireless charging module, which is connected to the power supply and the main control module. When the main control module detects that there is an external device at the location of the wireless charging module, the wireless charging module is used to perform wireless charging operations on the external device based on the power supply.

9. The LED lamp driving circuit with voice control function according to claim 1, characterized in that: The LED lamp driving circuit further includes a light sensing module, which is connected to the main control module and is used to generate a light sensing signal based on the light intensity of the external environment; When the LED lamp driving circuit is in the intelligent photosensor mode, the main control module adjusts the white light signal based on the photosensor signal, thereby adjusting the brightness of the white light LED lamp; the main control module adjusts the warm light signal based on the photosensor signal, thereby adjusting the brightness of the warm light LED lamp.

10. The LED lamp driving circuit with voice control function according to claim 9, characterized in that: The LED lamp driving circuit further includes a human body sensing module and a night light module, wherein the human body sensing module is used to generate a sensing signal based on sensing human activity, and the main control module generates a night light driving signal based on the sensing signal, and the night light inside the night light module is turned on based on the night light driving signal; When the LED lamp driving circuit is in the night light mode, the main control module is used to determine whether the current time is daytime or nighttime based on the light sensing signal. If the current time is daytime, the main control module does not generate a night light driving signal; if the current time is nighttime, the main control module generates a night light driving signal based on the sensing signal, the night light module is turned on based on the night light driving signal, and the night light is in the on state.

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