CN211406376U

CN211406376U - DALI adjusts luminance and mixes colour temperature power

Info

Publication number: CN211406376U
Application number: CN201922293827.7U
Authority: CN
Inventors: 何建
Original assignee: Dongguan Zhaozhuo Power Supply Co ltd
Current assignee: Dongguan Zhaozhuo Power Supply Co ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-09-01
Anticipated expiration: 2029-12-18

Abstract

The utility model discloses a DALI light modulation and color temperature regulation power supply, which comprises an EMI filter circuit, a rectifier circuit, a flyback switch circuit, a PWM controller circuit, a voltage transformation circuit, a cold tone photoelectric circuit, a warm tone photoelectric circuit, a DALI interface circuit, a DALI decoding processing module circuit and a dial circuit; the DALI interface circuit is used for receiving and transmitting DALI signals and transmitting the DALI signals to the DALI decoding processing module circuit for processing, the DALI decoding processing module circuit outputs PWM dimming signals to the cold tone light circuit and the warm tone light circuit respectively for dimming of the two circuits, and the dial circuit is connected to the DALI decoding processing module circuit and used for setting address codes. This novel adjust luminance through adjusting LED drive current size, realize the colour temperature through the cold/warm control switch of conversion and adjust, realize manual setting address code through dial-up circuit.

Description

DALI adjusts luminance and mixes colour temperature power

Technical Field

The utility model relates to a LED power technical field especially relates to a DALI light modulation and color temperature regulation power.

Background

According to the voltage-current characteristics of the LED, the LED light source is generally driven by a constant current power supply. Due to the characteristic of light color controllability of the LED, more and more LED lighting fixtures adopt the function of dimming control.

There are two ways of dimming LEDs: one is to adjust the pulse width of the LED driving voltage, i.e., Pulse Width Modulation (PWM) dimming, and the other is to adjust the magnitude of the LED driving current. Although the frequency of PWM dimming is high enough (generally greater than 100Hz), and human eyes cannot distinguish the high-frequency flickering of light during dimming, whether the high-frequency flickering light has an influence on human physical and mental health is a concern, and after all, natural sunlight is continuously irradiated light.

However, the DALI system technology has been popularized, but the DALI system can carry 64 components with independent addresses at most, and all the components are automatic dialing ID, the system automatically writes addresses and reads addresses, the lamp position cannot be accurately identified, and inconvenience is brought to adjustment and maintenance, meanwhile, the requirements of users for different color temperatures are different, some users like warm color temperatures, some users need cold color temperatures, generally, the warm color temperatures are below 3000K, the cold color temperatures are above 5000K, and the different brightness and color temperature requirements are market requirements.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a DALI light modulation colour temperature power supply is provided, this power passes through microprocessor and defeated PWM pulse to convert to analog voltage, as constant current drive's reference level, adjust the constant current drive output current size through adjusting reference voltage value, adjust luminance through adjusting LED drive current size, realize the colour temperature through the cold/warm control switch of conversion and adjust, realize the manual address code that sets up through dial circuit.

In order to solve the technical problem, the utility model discloses the technical scheme who takes is: a DALI light-modulation color temperature-modulation power supply comprises an EMI filter circuit, a rectifying circuit, a flyback switch circuit, a PWM controller circuit, a voltage transformation circuit, a cold tone light circuit, a warm tone light circuit, a DALI interface circuit, a DALI decoding processing module circuit and a dial circuit; AC power enters into the rectification circuit to be rectified and filtered after being filtered by the EMI filter circuit and common mode interference, and then is subjected to voltage reduction processing by the voltage transformation circuit, a flyback switch circuit and a PWM controller circuit are connected between the rectification circuit and the voltage transformation circuit and used for controlling pulse width of pulse voltage, a cold tone light circuit and a warm tone light circuit are respectively connected with the output end of the voltage transformation circuit, the two output ends of the two circuits are respectively connected with cold and warm load light sources and used for adjusting color temperature in cold and warm colors, a DALI interface circuit is used for receiving and sending DALI signals and transmitting the DALI signals to a DALI decoding processing module circuit for processing, the DALI decoding processing module circuit outputs PWM dimming signals to the cold tone light circuit and the warm tone light circuit respectively for dimming of the two circuits, and a dial code circuit is connected to the DALI decoding processing module circuit and used for setting address codes.

The further optimized technical scheme is that the cold tone photoelectric circuit comprises a voltage reduction and stabilization chip IC1, a VIN pin 7 and a VIN pin 8 of the chip are connected to the positive output end of a rectifying circuit in parallel, an SNS pin 6 is connected to the positive output end of the cold tone photoelectric circuit, exclusion RS1 and RS2 are connected between the junction of the VIN pin 7 and the VIN pin 8 and the SNS pin 6 in parallel, a switch SW1 is connected with resistors R45 and R46 in series and then connected between the junction of the VIN pin 7 and the VIN pin 8 and the SNS pin 6 in parallel, one end of a capacitor C2 is connected to the junction of a switch SW1 and the pin 7 and the VIN pin 8, the other end is grounded, a PDRV pin is connected to the grid of a MOS tube Q3, the source of the MOS tube Q3 is connected to the SNS pin 6, the drain of the MOS tube Q3 is connected to the negative output end of the cold tone photoelectric circuit, an ADJ, a capacitor C6 and a resistor R31 are connected in parallel between an ADJ pin 4 and a GND pin 3, an LX pin 1 is connected with the positive electrode output end of the rectifying circuit through a voltage regulator tube D1, a capacitor C5 is connected in parallel between the LX pin 1 and the GND pin 3, one end of an inductor L1 is connected with the LX pin 1, the other end of the inductor L1 is connected with the negative electrode output end of the cold-tone photoelectric circuit, one end of a capacitor C19 is connected with the positive electrode output end of the rectifying;

the warm tone light circuit comprises a voltage reduction and stabilization chip IC2, a VIN pin 7 and a VIN pin 8 of the chip are connected in parallel to the positive electrode output end of a rectifying circuit, an SNS pin 6 is connected to the positive electrode output end of the warm tone light circuit, exclusion RS3 and RS4 are connected in parallel between the junction of the VIN pin 7 and the VIN pin 8 and the SNS pin 6, a switch SW1 is connected in series with resistors R36 and R37 and then connected in parallel between the junction of the VIN pin 7 and the VIN pin 8 and the SNS pin 6, one end of a capacitor C7 is connected to the junction of the SW2 and the pin 7 and the VIN pin 8, the other end of the capacitor C7 is grounded, a PDRV pin is connected to the grid of a MOS tube Q4, the source of the MOS tube Q4 is connected to the SNS pin 6, the drain of the MOS tube Q4 is connected to the negative electrode output end of the warm tone light circuit, the ADJ pin 4 is connected to the GND (digital output) output PWM, the LX pin 1 is connected with the positive output end of the rectifying circuit through a voltage regulator tube D6, the capacitor C8 is connected between the LX pin 1 and the GND pin 3 in parallel, one end of the inductor L2 is connected with the LX pin 1, the other end of the inductor L2 is connected with the negative output end of the warm tone light circuit, one end of the capacitor C23 is connected with the positive output end of the rectifying circuit, and the other end of the capacitor C35.

The DALI interface circuit comprises a DALI signal input end, a rectifier chip U4, a triode VT1, VT2, VT4, a MOS transistor VT3, a photoelectric coupler U2 and a U3; the input end of a rectifying chip U4 is connected with a DALI signal input end, the base of a triode VT1 is connected with the positive output end of a rectifying chip U4 through a resistor R1, the emitter is connected with the positive output end of a rectifying chip U4, the collector is connected with the base of a triode VT2, the emitter of the triode VT2 is connected with the base of a triode VT1, the collector is connected with the output end of a photoelectric coupler U2, the base is connected with the negative output end of the rectifying chip U3 through resistors R3, R3 and R3, the drain of the MOS tube VT3 is connected with the emitter of the triode VT3, the gate of the MOS tube VT3 is divided into two paths, one path is connected with the output end of the photoelectric coupler U3 through the resistor R3, the source of the MOS tube VT3 is connected with the base of the triode VT3 through the resistor R3, the emitter of the triode VT3 is connected with the negative output end of the rectifying chip U3, the resistors R3, the R3 and the capacitor C3 are connected in parallel with the negative output end of the MCU 3 of the, the photocoupler U3 outputs the starting signal DTX to the signal receiving end of the MCU processor of the DALI decoding processing module circuit.

The DALI decoding processing module circuit comprises an MVU processing chip, a PA1 pin is connected to the output end of a photoelectric coupler U2, a PA4 pin is connected to the output end of the photoelectric coupler U3, a PA9 pin is connected to an ADJ pin 4 of a chip IC1 through a pull-up resistor R32, a PA10 pin is connected to an ADJ pin 4 of a chip IC2 through a pull-up resistor R43, a PFO pin and a PF1 pin are connected with a crystal oscillator circuit, the PA13 pin and the PA14 pin are connected with an EEPROM accessor, and address pins PB 8-PB 14 pin are connected with a dial circuit.

The further optimized technical scheme is that the dial circuit consists of two 8421 dial switches, one of which consists of ten address bits of address bits, and the other of which consists of one address bit.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: the utility model discloses possess two tunnel output independent power functions, realize adjustable colour temperature control through conversion changes in temperature colour temperature light source, possess and possess manual group address (ID) function, but realize the dimming control to the light source through DALI's digital address-seeking lighting interface, realize intelligent control, satisfy different users' demand, the more reasonable lighting scheme of collocation.

Drawings

FIG. 1 is a main power circuit diagram of a DALI dimming and color temperature adjusting power supply in the present embodiment;

FIG. 2 is a circuit diagram of a cool tone light circuit, a warm tone light circuit in the present example;

fig. 3 is a circuit diagram of a DALI interface circuit in the present embodiment;

fig. 4 is a circuit diagram of a DALI decoding processing module circuit in the present embodiment;

FIG. 5 is a circuit diagram of a dial circuit in the present embodiment;

fig. 6 is a circuit diagram of the power supply circuit in the present embodiment.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1, the utility model discloses a DALI light-modulation color temperature regulation power supply, including EMI filter circuit, rectifier circuit, flyback switch circuit, PWM controller circuit, vary voltage circuit, cold tone light circuit, warm tone light circuit, DALI interface circuit, DALI decoding processing module circuit and dial circuit; AC power enters into the rectification circuit to be rectified and filtered after being filtered by the EMI filter circuit and common mode interference, and then is subjected to voltage reduction processing by the voltage transformation circuit, a flyback switch circuit and a PWM controller circuit are connected between the rectification circuit and the voltage transformation circuit and used for controlling pulse width of pulse voltage, a cold tone light circuit and a warm tone light circuit are respectively connected with the output end of the voltage transformation circuit, the two output ends of the two circuits are respectively connected with cold and warm load light sources and used for adjusting color temperature in cold and warm colors, a DALI interface circuit is used for receiving and sending DALI signals and transmitting the DALI signals to a DALI decoding processing module circuit for processing, the DALI decoding processing module circuit outputs PWM dimming signals to the cold tone light circuit and the warm tone light circuit respectively for dimming of the two circuits, and a dial code circuit is connected to the DALI decoding processing module circuit and used for setting address codes.

Specifically, the commercial power 220Vac passes through an EMI filter circuit composed of LF1, CX1, LF2 to filter differential mode and common mode interference, enters a rectifier bridge BD1 for rectification and a filter circuit composed of C12, C4, L, and then converts alternating current into 300V direct current. The high-voltage direct current 300V is converted into low-voltage direct current of 50V through a flyback switching circuit formed by peripheral elements such as U1, T1 and Q1; the dimming and color temperature adjusting circuit consists of two DC-DC voltage reduction circuits, one is warm, the other is cold, and the dimming and color temperature adjusting circuit consists of IC1, IC2 and peripheral circuits thereof, and two paths of constant current can be switched through dial switches SW1 and SW 2; the dimming of the cold color and the warm color is controlled by outputting a PWM signal by the DALI decoding module; the IC3 and peripheral circuits thereof, L5 and E2, form a power supply circuit, and provide stable 12V voltage for supplying power to the DALI decoding module.

As shown in fig. 2, the specific cold-tone optical circuit includes a buck regulator chip IC1, where VIN pin 7 and VIN pin 8 of the chip are connected in parallel to the positive output terminal of the rectifier circuit, SNS pin 6 is connected to the positive output terminal of the cold-tone optical circuit, resistors RS1 and RS2 are connected in parallel between the node of VIN pin 7 and VIN pin 8 and SNS pin 6, switch SW1 is connected in series with resistors R45 and R46 and then connected in parallel between the node of VIN pin 7 and VIN pin 8 and SNS pin 6, capacitor C2 has one end connected to the node of switch SW1 and pin 7 and VIN pin 8 and the other end connected to ground, PDRV pin is connected to the gate of MOS Q3, the source of MOS Q3 is connected to SNS 865 pin 6, the drain of MOS Q4 is connected to the negative output terminal of the cold-tone optical circuit, ADJ pin 4 is connected to the output terminal of the PWM dimming signal of the DALI decoding processing module circuit via pull-up resistor R32, GND pin 3 is connected to, The resistor R31 is connected in parallel between the ADJ pin 4 and the GND pin 3, the LX pin 1 is connected with the positive electrode output end of the rectifying circuit through a voltage regulator tube D1, the capacitor C5 is connected in parallel between the LX pin 1 and the GND pin 3, one end of the inductor L1 is connected with the LX pin 1, the other end of the inductor L1 is connected with the negative electrode output end of the cold-tone photoelectric circuit, one end of the capacitor C19 is connected with the positive electrode output end of the rectifying circuit;

as shown in fig. 2, the warm tone light circuit specifically includes a buck regulator chip IC2, where VIN pin 7 and VIN pin 8 of the chip are connected in parallel to the positive output terminal of the rectifier circuit, SNS pin 6 is connected to the positive output terminal of the warm tone light circuit, resistors RS3 and RS4 are connected in parallel between the junction of VIN pin 7 and VIN pin 8 and SNS pin 6, a switch SW1 is connected in series with resistors R36 and R37 and then connected in parallel between the junction of VIN pin 7 and VIN pin 8 and SNS pin 6, one end of a capacitor C7 is connected to the junction of switch SW2 and pin 7 and VIN pin 8, the other end is grounded, a PDRV pin is connected to the gate of a MOS Q4, the source of the MOS Q4 is connected to SNS pin 6, the drain of the MOS Q4 is connected to the negative output terminal of the warm tone light circuit, an ADJ pin 4 is connected to the output PWM dimming signal output terminal of the DALI decoding processing module circuit via a pull-up resistor R43, a capacitor C9 and a resistor R42 are connected in parallel between an ADJ pin 4 and a GND pin 3, an LX pin 1 is connected with the positive electrode output end of a rectification circuit through a voltage regulator tube D6, a capacitor C8 is connected in parallel between the LX pin 1 and the GND pin 3, one end of an inductor L2 is connected with the LX pin 1, the other end of the inductor L2 is connected with the negative electrode output end of a warm tone light circuit, one end of a capacitor C23 is connected with the positive electrode output end of the rectification circuit.

As shown in fig. 3, the DALI interface circuit includes a DALI signal input terminal, a rectifier chip U4, a transistor VT1, VT2, VT4, a MOS transistor VT3, a photocoupler U2, U3; the input end of a rectifying chip U4 is connected with a DALI signal input end, the base of a triode VT1 is connected with the positive output end of a rectifying chip U4 through a resistor R1, the emitter is connected with the positive output end of a rectifying chip U4, the collector is connected with the base of a triode VT2, the emitter of the triode VT2 is connected with the base of a triode VT1, the collector is connected with the output end of a photoelectric coupler U2, the base is connected with the negative output end of the rectifying chip U3 through resistors R3, R3 and R3, the drain of the MOS tube VT3 is connected with the emitter of the triode VT3, the gate of the MOS tube VT3 is divided into two paths, one path is connected with the output end of the photoelectric coupler U3 through the resistor R3, the source of the MOS tube VT3 is connected with the base of the triode VT3 through the resistor R3, the emitter of the triode VT3 is connected with the negative output end of the rectifying chip U3, the resistors R3, the R3 and the capacitor C3 are connected in parallel with the negative output end of the MCU 3 of the, the photocoupler U3 outputs the starting signal DTX to the signal receiving end of the MCU processor of the DALI decoding processing module circuit.

As shown in fig. 4, the DALI decoding processing module circuit includes an MVU processing chip, a pin PA1 is connected to an output terminal of a photocoupler U2, a pin PA4 is connected to an output terminal of the photocoupler U3, a pin PA9 is connected to an ADJ pin 4 of a chip IC1 through a pull-up resistor R32, a pin PA10 is connected to an ADJ pin 4 of a chip IC2 through a pull-up resistor R43, a PFO pin and a pin PF1 are connected to a crystal oscillator circuit, a pin PA13 and a pin PA14 are connected to an EEPROM accessor, and pins PB8 to PB14 are connected to a dial circuit.

As shown in fig. 5, the dial circuit is composed of two 8421 dial switches, one constituting ten-bit address bits of the address bits, and the other constituting one-bit address bits. The dial circuit mainly adopts two 8421 dial switches of SWA and SWB to form ten bits and one bit of address bits, and each machine can set the own address code through the SWA and the SWB, and the maximum number of the address codes is 64.

Claims

1. A DALI dimming color temperature regulation power supply, comprising: the digital television receiver comprises an EMI filter circuit, a rectifying circuit, a flyback switch circuit, a PWM controller circuit, a voltage transformation circuit, a cold tone light circuit, a warm tone light circuit, a DALI interface circuit, a DALI decoding processing module circuit and a dial circuit; AC power enters into the rectification circuit to be rectified and filtered after being filtered by the EMI filter circuit and common mode interference, and then is subjected to voltage reduction processing by the voltage transformation circuit, a flyback switch circuit and a PWM controller circuit are connected between the rectification circuit and the voltage transformation circuit and used for controlling pulse width of pulse voltage, a cold tone light circuit and a warm tone light circuit are respectively connected with the output end of the voltage transformation circuit, the two output ends of the two circuits are respectively connected with cold and warm load light sources and used for adjusting color temperature in cold and warm colors, a DALI interface circuit is used for receiving and sending DALI signals and transmitting the DALI signals to a DALI decoding processing module circuit for processing, the DALI decoding processing module circuit outputs PWM dimming signals to the cold tone light circuit and the warm tone light circuit respectively for dimming of the two circuits, and a dial code circuit is connected to the DALI decoding processing module circuit and used for setting address codes.

2. The DALI dimming color temperature power supply of claim 1, wherein: the cold tone light circuit comprises a voltage reduction and stabilization chip IC1, a VIN pin 7 and a VIN pin 8 of the chip are connected in parallel to the positive output end of a rectifying circuit, an SNS pin 6 is connected to the positive output end of the cold tone light circuit, exclusion RS1 and RS2 are connected in parallel between the junction of the VIN pin 7 and the VIN pin 8 and the SNS pin 6, a switch SW1 is connected in series with resistors R45 and R46 and then connected between the junction of the VIN pin 7 and the VIN pin 8 and the SNS pin 6, one end of a capacitor C2 is connected to the junction of the SW1 and the pin 7 and the VIN pin 8, the other end of the capacitor C2 is grounded, a PDRV pin is connected to the grid of a MOS tube Q3, the source of the MOS tube Q3 is connected to the SNS pin 6, the drain of the MOS tube Q3 is connected to the negative output end of the cold tone light circuit, the ADJ pin 4 is connected to the output end of a PWM dimming signal output end of a DA, the LX pin 1 is connected with the positive output end of the rectifying circuit through a voltage regulator tube D1, the capacitor C5 is connected between the LX pin 1 and the GND pin 3 in parallel, one end of the inductor L1 is connected with the LX pin 1, the other end of the inductor L1 is connected with the negative output end of the cold-tone dimming circuit, one end of the capacitor C19 is connected with the positive output end of the rectifying circuit, and the other end of the capacitor C;

the warm tone light circuit comprises a voltage reduction and stabilization chip IC2, a VIN pin 7 and a VIN pin 8 of the chip are connected in parallel to the positive electrode output end of a rectifying circuit, an SNS pin 6 is connected to the positive electrode output end of the warm tone light circuit, exclusion RS3 and RS4 are connected in parallel between the junction of the VIN pin 7 and the VIN pin 8 and the SNS pin 6, a switch SW1 is connected in series with resistors R36 and R37 and then connected between the junction of the VIN pin 7 and the VIN pin 8 and the SNS pin 6, one end of a capacitor C7 is connected to the junction of the SW2 and the pin 7 and the VIN pin 8, the other end of the capacitor C7 is grounded, a PDRV pin is connected to the grid of a MOS tube Q4, the source of the MOS tube Q4 is connected to the SNS pin 6, the drain of the MOS tube Q4 is connected to the negative electrode output end of the warm tone light circuit, an ADJ pin 4 is connected to the output end of a PWM dimming signal output end, the LX pin 1 is connected with the positive output end of the rectifying circuit through a voltage regulator tube D6, the capacitor C8 is connected between the LX pin 1 and the GND pin 3 in parallel, one end of the inductor L2 is connected with the LX pin 1, the other end of the inductor L2 is connected with the negative output end of the warm tone light circuit, one end of the capacitor C23 is connected with the positive output end of the rectifying circuit, and the other end of the capacitor C35.

3. The DALI dimming color temperature power supply of claim 2, wherein: the DALI interface circuit comprises a DALI signal input end, a rectifying chip U4, a triode VT1, a VT2, a VT4, a MOS transistor VT3, a photoelectric coupler U2 and a U3; the input end of a rectifying chip U4 is connected with a DALI signal input end, the base of a triode VT1 is connected with the positive output end of a rectifying chip U4 through a resistor R1, the emitter is connected with the positive output end of a rectifying chip U4, the collector is connected with the base of a triode VT2, the emitter of the triode VT2 is connected with the base of a triode VT1, the collector is connected with the output end of a photoelectric coupler U2, the base is connected with the negative output end of the rectifying chip U3 through resistors R3, R3 and R3, the drain of the MOS tube VT3 is connected with the emitter of the triode VT3, the gate of the MOS tube VT3 is divided into two paths, one path is connected with the output end of the photoelectric coupler U3 through the resistor R3, the source of the MOS tube VT3 is connected with the base of the triode VT3 through the resistor R3, the emitter of the triode VT3 is connected with the negative output end of the rectifying chip U3, the resistors R3, the R3 and the capacitor C3 are connected in parallel with the negative output end of the MCU 3 of the, the photocoupler U3 outputs the starting signal DTX to the signal receiving end of the MCU processor of the DALI decoding processing module circuit.

4. The DALI dimming color temperature power supply of claim 3, wherein: the DALI decoding processing module circuit comprises an MVU processing chip, a PA1 pin is connected to the output end of a photoelectric coupler U2, a PA4 pin is connected to the output end of the photoelectric coupler U3, a PA9 pin is connected with an ADJ pin 4 of a chip IC1 through a pull-up resistor R32, a PA10 pin is connected with an ADJ pin 4 of a chip IC2 through a pull-up resistor R43, a PFO pin and a PF1 pin are connected with a crystal oscillator circuit, the PA13 pin and the PA14 pin are connected with an EEPROM accessor, and address pins PB 8-PB 14 are connected with a dial circuit.

5. The DALI dimming color temperature power supply of claim 3, wherein: the dial circuit consists of two 8421 dial switches, one of which constitutes ten-bit address bits of the address bits, and the other of which constitutes one-bit address bits.