Power-constant automatic control and regulation circuit and floor eye-protection lamp using same

Abstract

The invention provides a constant-power automatic control adjusting circuit and a floor eye-protection lamp using the circuit, the circuit comprises MCU control chips U1 and U2, resistors R1 to R17, triodes Q1 and Q2, capacitors C1 to C8 and diodes D1 to D8, the MCU control chips U1, the resistors R1 to R3, R10 and R11 and the capacitors C3, C7 and C8 form a voltage operation output circuit, the MCU control chips U2, the triodes Q1 and Q2, the capacitors C4 to C6, the diodes D5 to D8 and the resistors R4 to R9, R16 and R17 form a constant-power driving circuit, and the MCU control chips U2, the triodes Q1 and Q2, the capacitors C4 to C6, the diodes D5 to D8 and the resistors R4 to R9, R16 and R17 form a constant-power driving circuit. The resistors R12 to R15 and the diodes D1 to D4 form a control display circuit. Voltage values generated by current passing through resistors R6 and R7 can be automatically detected through a pin 14 and a pin 15 of the MCU control chip U2, and are fed back to the voltage operation output circuit for calculation and comparison, and then PWM signals are output through a pin 9 and a pin 10 of the U2 to automatically adjust the current of triodes Q1 and Q2. And finally, the output power of the voltage operation output circuit is continuously kept at 48V to be constant, and accurate constant voltage control on the input voltage is completed.

Description

Technical Field

[0001] The present invention relates to the technical field of power regulating circuits, in particular to a power constant automatic control regulating circuit and a floor-standing eye-protection lamp using the same. Background Art

[0002] In the existing technology, the specifications and types of LED lamps are increasing, and the characteristics vary greatly. The power of LED lamps of different customers is also different. According to the constant power standard, the specifications and types of power supplies are very diverse. For the same LED lamp, some LED lamps have very high voltage, while others have very low voltage. For lamps of different power, it is usually necessary to adjust the input voltage of the power supply.

[0003] Existing conventional constant voltage operating methods generally use a PWM control board to regulate the input voltage of the power supply. Specifically, the PWM control board converts the 220V AC input from the mains into a 48V constant voltage output, which is then transmitted to the light board in the LED light-emitting assembly. However, this control method has obvious problems: while international standards require a power tolerance within ±10%, the voltage of a single lamp bead is generally between 2.8 and 3.0V. Since the light board in the LED light-emitting assembly is composed of multiple lamps connected in series, it is very sensitive to voltage fluctuations. Even the slightest change in the input voltage may prevent the power from being within the tolerance, resulting in significant fluctuations in the lamp light, which can have a negative impact on the human eye and cannot be used in eye-protection lamps. Due to control accuracy issues, existing PWM control boards cannot completely eliminate input voltage fluctuations and cannot achieve precise constant voltage control of the input voltage, so they need to be improved. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the present invention proposes a power constant automatic control and regulation circuit, which can completely eliminate the fluctuation of the input voltage and achieve precise constant voltage of the input voltage.

[0005] The present invention also provides a floor-standing eye-protection lamp using the above-mentioned constant power automatic control and adjustment circuit.

[0006] In order to realize the above technical solution, the present invention provides a power constant automatic control and regulation circuit, comprising: an MCU control chip U2, a voltage operation output circuit, a control display circuit and a power constant drive circuit, wherein the power constant drive circuit comprises transistors Q1, Q2, capacitors C4-C6, diodes D5-D8, resistors R4-R9, R16, and R17, wherein pin 9 of the MCU control chip U2 is connected to one end of the resistor R9, and the other end of the resistor R9 is connected to the base of the transistor Q2, and the resistor One end of R8 is connected to the connection line between resistor R9 and the base of transistor Q2, the other end of resistor R8 is grounded, the collector of transistor Q2 is connected to one end of diode D8, the other end of diode D8 is connected to diode D7, the other end of diode D7 is connected to the power supply voltage VDD, pin 10 of U2 is connected to one end of resistor R4, the other end of resistor R4 is connected to the base of transistor Q1, one end of resistor R5 is connected to the connection line between resistor R4 and the base of transistor Q1, the other end of resistor R5 is connected to The collector of transistor Q1 is connected to one end of diode D6, the other end of diode D6 is connected to diode D5, the other end of diode D5 is connected to power supply voltage VDD, the emitter of transistor Q1 is connected to one end of resistor R6, the other end of resistor R6 is respectively connected to ground and to one end of resistor R7, the other end of resistor R7 is connected to the emitter of transistor Q2, one end of resistor R16 is connected to the line connecting transistor Q1 and resistor R6, the other end of resistor R16 is respectively connected to 1 of U2. Pin 4 is connected to one end of capacitor C6, the other end of capacitor C6 is grounded, one end of resistor R17 is connected to the line connecting transistor Q2 and resistor R7, the other end of resistor R17 is respectively connected to pin 15 of U2 and one end of capacitor C5, the other end of capacitor C5 is grounded, pin 1 of U2 is respectively connected to a 5V power supply and one end of capacitor C4, the other end of capacitor C4 is respectively grounded and connected to pin 16 of U2; the voltage calculation output circuit is connected to pin 4 of U2, and the control display circuit is connected to pins 5 to 8 of U2.

[0007] In the above technical solution, during actual operation, the voltage value generated by the current passing through resistors R6 and R7 is automatically detected through pins 14 and 15 of the MCU control chip U2, and fed back to the voltage operation output circuit for calculation and comparison. Then, a PWM signal is output through pins 9 and 10 of U2 to automatically adjust the current of transistors Q1 and Q2, so that the output power of the voltage operation output circuit is continuously maintained at a constant 48V.

[0008] Preferably, the voltage operation output circuit includes an MCU control chip U1, resistors R1 to R3, R10, R11, capacitors C3, C7, and C8, wherein pin 1 of the MCU control chip U1 is connected to one end of the resistor R2, the other end of the resistor R2 is connected to the light board, pin 2 of U1 is connected to one end of the capacitor C3, the other end of the capacitor C3 is grounded, pin 3 of U1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to a 5V power supply, and one end of the capacitor C8 is connected On the line connecting pin 3 of U1 to resistor R3, the other end of capacitor C8 is connected to ground and to pin 4 of U1. Capacitors C7 and C8 are connected in parallel. Pin 5 of U1 is connected to one end of resistor R11, the other end of which is connected to the light board. Pin 6 of U1 is connected to one end of resistor R10, the other end of which is connected to the light board. Pin 7 of U1 is connected to pin 4 of U2. Pin 8 of U1 is connected to one end of resistor R3, the other end of which is connected to the light board. In actual operation, resistor R1 acts as a current limiter, limiting the amount of current flowing into U1 or other components to prevent excessive current from damaging components. Resistors R2, R3, R10, and R11 are connected to the output of U1 and act as load resistors, converting the current signal output by U1 into a voltage signal, providing a constant input voltage for the light board. Capacitor C3 is the power filter capacitor for chip U1, used to stabilize chip U1's power supply voltage and filter out high-frequency noise, ensuring stable operation. Capacitors C7 and C8 are used for high-frequency filtering or coupling. Powered by a 5V power supply, chip U1 calculates and compares the input signal from MCU control chip U2 through the coordination of peripheral components such as resistors and capacitors, and then outputs the processed signal through the output terminal (connected to the pins of R2, R3, R10, and R11).

[0009] Preferably, the control display circuit includes resistors R12 to R15 and diodes D1 to D4, wherein pin 5 of the MCU control chip U2 is connected to one end of the resistor R12, the other end of the resistor R12 is connected to one end of the diode D1, the other end of the diode D1 is connected to a 5V power supply, pin 6 of U2 is connected to one end of the resistor R13, the other end of the resistor R13 is connected to one end of the diode D2, the other end of the diode D2 is connected to a 5V power supply, pin 7 of U2 is connected to one end of the resistor R14, the other end of the resistor R14 is connected to one end of the diode D3, the other end of the diode D3 is connected to a 5V power supply, pin 8 of U2 is connected to one end of the resistor R15, the other end of the resistor R15 is connected to one end of the diode D4, and the other end of the diode D4 is connected to a 5V power supply. In actual operation, the circuit uses a 5V power supply. Resistors R12 through R15 limit the current flowing through the LEDs, preventing damage due to excessive current. When the circuit is powered on, U2's output terminals sequentially output high or low levels based on the input data. When a specific output terminal is high, the corresponding LED (diodes D1 through D4) illuminates. U2 controls which LEDs illuminate based on the input data, thereby achieving different display effects.

[0010] Preferably, the power constant automatic control regulation circuit further includes a voltage stabilization circuit, comprising a three-terminal voltage regulator 78L05, capacitors C1 and C2, wherein a first terminal of the three-terminal voltage regulator 78L05 is connected to the power supply voltage VDD, a second terminal of the three-terminal voltage regulator 78L05 is connected to a 5V power supply, one terminal of the capacitor C1 is connected to a third terminal of the three-terminal voltage regulator 78L05, the other terminal of the capacitor C1 is connected to the connection line between the three-terminal voltage regulator 78L05 and the 5V power supply, and capacitor C2 is arranged in parallel with capacitor C1. During actual operation, the three-terminal voltage regulator 78L05 stabilizes the VDD input power supply voltage to 5V, where VDD is the power supply voltage terminal, which is 220V, and 5V is the output voltage terminal. Capacitors C1 and C2 act as filters, making the output voltage more stable and smooth, reducing voltage fluctuations and interference.

[0011] The present invention also provides a floor-standing eye-protection lamp, comprising: the aforementioned constant-power automatic control and adjustment circuit; and a lamp stand, wherein the lamp stand is mounted with a square aluminum frame mounted on top, a prismatic plate mounted within the square aluminum frame, a diffuser plate mounted above the prismatic plate, an inner frame mounted above the diffuser plate, an LED assembly mounted on the inner frame, a rear cover mounted on top of the inner frame and enclosing the LED assembly within the inner frame, and the constant-power automatic control and adjustment circuit being electrically connected to a light board mounted within the LED assembly. During actual operation, the constant-power automatic control and adjustment circuit can stably control the constant voltage input of the LED assembly, ensuring stable light emission from the light board in the LED assembly without slight light fluctuations, thereby achieving an effective eye protection effect.

[0012] Preferably, the lamp stand includes a base, a base guide rod support member is mounted on the base, a lower lamp pole is fixed to the base guide rod support member by screws, a middle joint is provided at the top of the lower lamp pole, an upper lamp pole is sleeved on the middle joint and fixed by screws, an aluminum frame is welded to the top of the upper lamp pole, a rear cover is fixed to the top of the upper lamp pole by an upper joint and is located above the aluminum frame, an iron beam is installed between the upper joint and the rear cover, and the front and rear ends of the iron beam are respectively blocked by a front beam plug and a rear beam plug. During actual assembly, it is only necessary to assemble the base, lower lamp pole, and upper lamp pole before installing the rear cover, which is very convenient.

[0013] Preferably, the rear cover is provided with an LED component maintenance slot, in which a sealing plate is embedded and installed, so as to facilitate maintenance of the light-emitting LED component during actual use.

[0014] Preferably, a touch control piece is installed on the upper lamp post, and the touch control piece is electrically connected to the light-emitting LED component. In actual use, the touch control piece can be used to control the opening and closing and lighting effect of the light-emitting LED component.

[0015] Preferably, a power socket is installed on the lower lamp pole to facilitate connection with an external power supply via a power cord.

[0016] The present invention provides a power constant automatic control and regulation circuit and a floor-standing eye protection lamp using the same, which has the following beneficial effects:

[0017] (1) The present invention can completely eliminate the fluctuation of the input voltage and achieve precise constant voltage control of the input voltage by designing a constant power automatic control and adjustment circuit. During actual operation, the voltage value generated by the current passing through resistors R6 and R7 is automatically detected through pins 14 and 15 of the MCU control chip U2, and fed back to the voltage operation output circuit for calculation and comparison. Then, PWM signals are output through pins 9 and 10 of U2 to automatically adjust the current of transistors Q1 and Q2. Ultimately, the output power of the voltage operation output circuit is continuously maintained at a constant 48V, completing precise constant voltage control of the input voltage.

[0018] (2) The present invention makes the assembly of the floor-standing eye protection lamp easy through the structural design of the floor-standing eye protection lamp, and can stably control the constant voltage input of the light-emitting LED component through the power constant automatic control adjustment circuit, so that the light board in the light-emitting LED component emits light stably without slight light changes, thereby achieving a good eye protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 1 is a circuit diagram of the present invention.

[0020] Figure 2 This is a voltage stabilizing circuit diagram of the present invention.

[0021] Figure 3 The figure is a three-dimensional assembly diagram of the floor-standing eye protection lamp of the present invention.

[0022] Figure 4 It is a three-dimensional exploded view of the floor-standing eye-protection lamp of the present invention.

[0023] In the figure: 1. Rear plug of the crossbeam; 2. Iron crossbeam; 3. Upper joint; 4. Rear cover; 5. Closing plate; 6. LED component maintenance slot; 7. Front plug of the crossbeam; 8. Illuminated LED component; 9. Inner frame; 10. Diffuser plate; 11. Prism plate; 12. Aluminum frame; 13. Touch control panel; 14. Upper light pole; 15. Middle joint; 16. Lower light pole; 17. Base guide rod support; 18. Base; 19. Screws; 20. Power jack; 21. Power cord. DETAILED DESCRIPTION

[0024] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary persons in this field without creative work are within the scope of protection of the present invention.

[0025] Example 1: A power constant automatic control and regulation circuit.

[0026] Reference Figure 1 and Figure 2 As shown, a power constant automatic control and adjustment circuit includes: MCU control chips U1 and U2, resistors R1 to R17, transistors Q1 and Q2, capacitors C1 to C8, diodes D1 to D8, and a three-terminal voltage regulator 78L05. Among them, the MCU control chip U1, resistors R1 to R3, R10, R11, capacitors C3, C7, and C8 constitute a voltage operation output circuit, the MCU control chip U2, transistors Q1 and Q2, capacitors C4 to C6, diodes D5 to D8, resistors R4 to R9, R16, and R17 constitute a power constant drive circuit, resistors R12 to R15 and diodes D1 to D4 constitute a control display circuit, and the three-terminal voltage regulator 78L05 and capacitors C1 and C2 constitute a voltage stabilization circuit.

[0027] Reference Figure 1As shown, the power constant driving circuit includes transistors Q1, Q2, capacitors C4~C6, diodes D5~D8, resistors R4~R9, R16, and R17, wherein pin 9 of the MCU control chip U2 is connected to one end of the resistor R9, the other end of the resistor R9 is connected to the base of the transistor Q2, one end of the resistor R8 is connected to the connection line between the resistor R9 and the base of the transistor Q2, the other end of the resistor R8 is grounded, the collector of the transistor Q2 is connected to one end of the diode D8, the other end of the diode D8 is connected to the diode D7, the other end of the diode D7 is connected to the power supply voltage VDD, pin 10 of U2 is connected to one end of the resistor R4, the other end of the resistor R4 is connected to the base of the transistor Q1, one end of the resistor R5 is connected to the connection line between the resistor R4 and the base of the transistor Q1, the other end of the resistor R5 is grounded, the collector of the transistor Q1 is connected to one end of the diode D6, the other end of the diode D6 is connected to the diode D7, and the other end of the diode D7 is connected to the power supply voltage VDD. The transistor D5 is connected, the other end of the diode D5 is connected to the power supply voltage VDD, the emitter of the transistor Q1 is connected to one end of the resistor R6, the other end of the resistor R6 is respectively connected to ground and to one end of the resistor R7, the other end of the resistor R7 is connected to the emitter of the transistor Q2, one end of the resistor R16 is connected to the line connecting the transistor Q1 and the resistor R6, the other end of the resistor R16 is respectively connected to pin 14 of U2 and one end of the capacitor C6, the other end of the capacitor C6 is grounded, one end of the resistor R17 is connected to the line connecting the transistor Q2 and the resistor R7, the other end of the resistor R17 is respectively connected to pin 15 of U2 and one end of the capacitor C5, the other end of the capacitor C5 is grounded, pin 1 of U2 is respectively connected to the 5V power supply and one end of the capacitor C4, the other end of the capacitor C4 is respectively connected to ground and to pin 16 of U2; the voltage operation output circuit is connected to pin 4 of U2, and the control display circuit is connected to pins 5 to 8 of U2. During actual operation, the voltage value generated by the current passing through resistors R6 and R7 is automatically detected through pins 14 and 15 of the MCU control chip U2, and fed back to the voltage operation output circuit for calculation and comparison. Then, PWM signals are output through pins 9 and 10 of U2 to automatically adjust the current of transistors Q1 and Q2, so that the output power of the voltage operation output circuit is maintained at a constant 48V.

[0028] Reference Figure 1As shown, the voltage operation output circuit includes an MCU control chip U1, resistors R1 to R3, R10, R11, capacitors C3, C7, and C8, wherein pin 1 of the MCU control chip U1 is connected to one end of the resistor R2, the other end of the resistor R2 is connected to the light board, pin 2 of U1 is connected to one end of the capacitor C3, the other end of the capacitor C3 is grounded, pin 3 of U1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to a 5V power supply, and one end of the capacitor C8 is connected to On the connection line between pin 3 of U1 and resistor R3, the other end of capacitor C8 is connected to ground and to pin 4 of U1. Capacitors C7 and C8 are connected in parallel. Pin 5 of U1 is connected to one end of resistor R11, the other end of which is connected to the light board. Pin 6 of U1 is connected to one end of resistor R10, the other end of which is connected to the light board. Pin 7 of U1 is connected to pin 4 of U2. Pin 8 of U1 is connected to one end of resistor R3, the other end of which is connected to the light board. In actual operation, resistor R1 acts as a current limiter, limiting the amount of current flowing into U1 or other components to prevent excessive current from damaging components. Resistors R2, R3, R10, and R11 are connected to the output of U1 and act as load resistors, converting the current signal output by U1 into a voltage signal, providing a constant input voltage for the light board. Capacitor C3 is the power filter capacitor for chip U1, used to stabilize chip U1's power supply voltage and filter out high-frequency noise, ensuring stable operation. Capacitors C7 and C8 are used for high-frequency filtering or coupling. Powered by a 5V power supply, chip U1 calculates and compares the input signal from MCU control chip U2 through the coordination of peripheral components such as resistors and capacitors, and then outputs the processed signal through the output terminal (connected to the pins of R2, R3, R10, and R11).

[0029] Reference Figure 1As shown, the control display circuit includes resistors R12~R15 and diodes D1~D4, wherein pin 5 of the MCU control chip U2 is connected to one end of the resistor R12, the other end of the resistor R12 is connected to one end of the diode D1, and the other end of the diode D1 is connected to a 5V power supply. Pin 6 of U2 is connected to one end of the resistor R13, the other end of the resistor R13 is connected to one end of the diode D2, and the other end of the diode D2 is connected to a 5V power supply. Pin 7 of U2 is connected to one end of the resistor R14, the other end of the resistor R14 is connected to one end of the diode D3, and the other end of the diode D3 is connected to a 5V power supply. Pin 8 of U2 is connected to one end of the resistor R15, the other end of the resistor R15 is connected to one end of the diode D4, and the other end of the diode D4 is connected to a 5V power supply. In actual operation, the circuit uses a 5V power supply. Resistors R12 through R15 limit the current flowing through the LEDs, preventing damage due to excessive current. When the circuit is powered on, U2's output terminals sequentially output high or low levels based on the input data. When a specific output terminal is high, the corresponding LED (diodes D1 through D4) illuminates. U2 controls which LEDs illuminate based on the input data, thereby achieving different display effects.

[0030] Reference Figure 2 As shown, the voltage stabilization circuit includes a three-terminal voltage regulator 78L05 and capacitors C1 and C2. The first terminal of the three-terminal voltage regulator 78L05 is connected to the power supply voltage VDD, the second terminal of the three-terminal voltage regulator 78L05 is connected to the 5V power supply, one terminal of capacitor C1 is connected to the third terminal of the three-terminal voltage regulator 78L05, and the other terminal of capacitor C1 is connected to the connection line between the three-terminal voltage regulator 78L05 and the 5V power supply. Capacitor C2 is arranged in parallel with capacitor C1. During actual operation, the three-terminal voltage regulator 78L05 stabilizes the VDD input power supply voltage to 5V output. VDD is the power supply voltage terminal, which is 220V, and 5V is the output voltage terminal. Capacitors C1 and C2 act as filters, making the output voltage more stable and smooth, reducing voltage fluctuations and interference.

[0031] The present invention completely eliminates input voltage fluctuations and achieves precise constant voltage control through the design of a constant power automatic control and regulation circuit. During operation, the voltage generated by the current passing through resistors R6 and R7 is automatically detected via pins 14 and 15 of the MCU control chip U2. This voltage is fed back to the voltage calculation output circuit for calculation and comparison. Then, a PWM signal is output via pins 9 and 10 of U2 to automatically regulate the current in transistors Q1 and Q2. Ultimately, the output power of the voltage calculation output circuit is maintained at a constant 48V, achieving precise constant voltage control of the input voltage.

[0032] Example 2: A floor-standing eye-protection lamp.

[0033] Reference Figure 3 and Figure 4 As shown, a floor-standing eye protection lamp comprises: the power constant automatic control adjustment circuit described in Example 1, and also comprises a lamp stand, wherein the lamp stand comprises a base 18, a base guide rod support 17 is mounted on the base 18, a lower lamp pole 16 is fixed to the base guide rod support 17 by screws 19, a middle joint 15 is provided at the top of the lower lamp pole 16, an upper lamp pole 14 is sleeved on the middle joint 15 and fixed by screws, an aluminum frame 12 is welded to the top of the upper lamp pole 14, a back cover 4 is fixed to the top of the upper lamp pole 14 by an upper joint 3 and is located above the aluminum frame 12, an iron crossbeam 2 is installed between the upper joint 3 and the back cover 4, and the front and rear ends of the iron crossbeam 2 are respectively blocked by a front crossbeam plug 7 and a rear crossbeam plug 1. During actual assembly, it is only necessary to assemble the base 18, the lower lamp pole 16 and the upper lamp pole 14, and then install the back cover 4, which is very convenient to assemble. A prismatic plate 11 is mounted within the aluminum frame 12. A diffuser plate 10 is mounted above the prismatic plate 11. An inner frame 9 is mounted above the diffuser plate 10. An LED assembly 8 is mounted within the inner frame 9. A rear cover 4 is mounted atop the inner frame 9, enclosing the LED assembly 8 within the inner frame 9. The power constant automatic control and adjustment circuit is electrically connected to the light board mounted within the LED assembly 8. During operation, the power constant automatic control and adjustment circuit stabilizes the constant voltage input to the LED assembly 8, ensuring stable light emission from the light board within the LED assembly 8 without slight variations in light intensity, thereby achieving excellent eye protection. The rear cover 4 is provided with an LED assembly maintenance slot 6, into which a sealing plate 5 is embedded. This facilitates maintenance of the LED assembly 8 during use. A touch control panel 13 is mounted on the upper lamp post 14 and is electrically connected to the LED assembly 8. During use, the touch control panel 13 can be used to control the on / off and lighting effects of the LED assembly 8. The lower lamp post 16 is provided with a power socket 20 for facilitating connection with an external power source via a power line 21 .

[0034] The present invention makes the assembly of the eye protection lamp easy through the structural design of the floor-standing eye protection lamp, and can stably control the constant voltage input of the light-emitting LED component 8 through the power constant automatic control adjustment circuit, so that the lamp board in the light-emitting LED component 8 emits light stably without slight light changes, thereby achieving a good eye protection effect.

[0035] The above description is only a preferred embodiment of the present invention, but the present invention should not be limited to the contents disclosed in the embodiment and the drawings. Therefore, any equivalent or modification completed without departing from the spirit disclosed in the present invention shall fall within the scope of protection of the present invention.

Claims

1. A power constant automatic control regulation circuit, characterized in that include: MCU control chip U2, voltage operation output circuit, control display circuit and power constant drive circuit, wherein the power constant drive circuit includes transistors Q1, Q2, capacitors C4~C6, diodes D5~D8, resistors R4~R9, R16, R17, wherein pin 9 of the MCU control chip U2 is connected to one end of the resistor R9, the other end of the resistor R9 is connected to the base of the transistor Q2, one end of the resistor R8 is connected to the connection line between the resistor R9 and the base of the transistor Q2, the other end of the resistor R8 is grounded, the collector of the transistor Q2 is connected to one end of the diode D8, the other end of the diode D8 is connected to the diode D7, the other end of the diode D7 is connected to the power supply voltage VDD, U2 pin 10 is connected to one end of the resistor R4, the other end of the resistor R4 is connected to the base of the transistor Q1, one end of the resistor R5 is connected to the connection line between the resistor R4 and the base of the transistor Q1, and the other end of the resistor R5 is connected to the power supply voltage VDD. Ground, the collector of transistor Q1 is connected to one end of diode D6, the other end of diode D6 is connected to diode D5, the other end of diode D5 is connected to the power supply voltage VDD, the emitter of transistor Q1 is connected to one end of resistor R6, the other end of resistor R6 is respectively connected to ground and to one end of resistor R7, the other end of resistor R7 is connected to the emitter of transistor Q2, one end of resistor R16 is connected to the line connecting transistor Q1 and resistor R6, the other end of resistor R16 is respectively connected to pin 14 of U2 and one end of capacitor C6, the other end of capacitor C6 is grounded, one end of resistor R17 is connected to the line connecting transistor Q2 and resistor R7, the other end of resistor R17 is respectively connected to pin 15 of U2 and one end of capacitor C5, the other end of capacitor C5 is grounded, pin 1 of U2 is respectively connected to the 5V power supply and one end of capacitor C4, the other end of capacitor C4 is respectively connected to ground and to pin 16 of U2; The voltage operation output circuit is connected to pin 4 of U2, and the control display circuit is connected to pins 5 to 8 of U2.

2. The power constant automatic control and regulation circuit according to claim 1, characterized in that: The voltage operation output circuit includes an MCU control chip U1, resistors R1 to R3, R10, R11, capacitors C3, C7, and C8, wherein the 1st pin of the MCU control chip U1 is connected to one end of the resistor R2, the other end of the resistor R2 is connected to the light board, the 2nd pin of U1 is connected to one end of the capacitor C3, the other end of the capacitor C3 is grounded, the 3rd pin of U1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to the 5V power supply, and one end of the capacitor C8 is connected to the U1. On the connecting line between pin 3 of U1 and resistor R3, the other end of capacitor C8 is grounded and connected to pin 4 of U1 respectively, capacitor C7 and capacitor C8 are set in parallel, pin 5 of U1 is connected to one end of resistor R11, and the other end of resistor R11 is connected to the light board, pin 6 of U1 is connected to one end of resistor R10, and the other end of resistor R10 is connected to the light board, pin 7 of U1 is connected to pin 4 of U2, and pin 8 of U1 is connected to one end of resistor R3, and the other end of resistor R3 is connected to the light board.

3. The power constant automatic control and regulation circuit according to claim 2, characterized in that: The control display circuit includes resistors R12~R15 and diodes D1~D4, wherein pin 5 of the MCU control chip U2 is connected to one end of the resistor R12, the other end of the resistor R12 is connected to one end of the diode D1, and the other end of the diode D1 is connected to a 5V power supply. Pin 6 of U2 is connected to one end of the resistor R13, the other end of the resistor R13 is connected to one end of the diode D2, and the other end of the diode D2 is connected to a 5V power supply. Pin 7 of U2 is connected to one end of the resistor R14, the other end of the resistor R14 is connected to one end of the diode D3, and the other end of the diode D3 is connected to a 5V power supply. Pin 8 of U2 is connected to one end of the resistor R15, the other end of the resistor R15 is connected to one end of the diode D4, and the other end of the diode D4 is connected to a 5V power supply.

4. The power constant automatic control and regulation circuit according to claim 3, characterized in that: It also includes a voltage stabilizing circuit, which includes a three-terminal voltage regulator 78L05 and capacitors C1 and C2. The first terminal of the three-terminal voltage regulator 78L05 is connected to the power supply voltage VDD, the second terminal of the three-terminal voltage regulator 78L05 is connected to the 5V power supply, one terminal of the capacitor C1 is connected to the third terminal of the three-terminal voltage regulator 78L05, and the other terminal of the capacitor C1 is connected to the connection line between the three-terminal voltage regulator 78L05 and the 5V power supply. The capacitor C2 is arranged in parallel with the capacitor C1.

5. A floor-standing eye protection lamp, characterized in that include: The power constant automatic control and adjustment circuit as described in any one of claims 1 to 4 further includes a lamp holder, a square aluminum frame is installed on the top of the lamp holder, a prism plate is installed in the square aluminum frame, a diffusion plate is installed above the prism plate, an inner frame is installed above the diffusion plate, a light-emitting LED component is installed on the inner frame, a back cover is installed on the top of the inner frame and encloses the light-emitting LED component in the inner frame, and the power constant automatic control and adjustment circuit is electrically connected to the lamp board installed in the light-emitting LED component.

6. The floor-standing eye-protection lamp according to claim 5, characterized in that: The lamp holder includes a base, a base guide rod support is installed on the base, a lower lamp pole is fixed to the base guide rod support by screws, a middle joint is provided on the top of the lower lamp pole, the upper lamp pole is sleeved on the middle joint and fixed by screws, an aluminum frame is welded to the top of the upper lamp pole, and the back cover is fixed to the top of the upper lamp pole by the upper joint and is located above the aluminum frame, an iron beam is installed between the upper joint and the back cover, and the front and rear ends of the iron beam are respectively blocked by a front beam plug and a rear beam plug.

7. The floor-standing eye-protection lamp according to claim 5, characterized in that: The rear cover is provided with an LED component maintenance slot, and a sealing plate is embedded and installed in the LED component maintenance slot.

8. The floor-standing eye-protection lamp according to claim 6, characterized in that: A touch control piece is installed on the upper lamp post, and the touch control piece is electrically connected to the light-emitting LED component.

9. The floor-standing eye-protection lamp according to claim 6, characterized in that: A power socket is installed on the lower lamp pole.

Images