RS485 intelligent power supply with remote light and color adjusting function

Abstract

The utility model discloses an RS485 intelligent power supply with a remote light and color adjusting function, which relates to the field of voltage supply, and comprises an input filtering module, an output filtering module, an output filtering module, an output filtering module and an output filtering module, and is characterized in that the input filtering module is used for filtering clutters of input commercial power alternating current, suppressing power supply noise and electromagnetic interference in a circuit and then outputting the power supply noise and electromagnetic interference to the output filtering module; the alternating current is converted into direct current; the beneficial effects of the utility model are that through the RS485 communication module, the LED load can be remotely and finely dimmed and toned, through the host computer, according to a set time table and a corresponding dimming value, the illumination effect of the lamp is automatically controlled everyday, remote end manual intervention is carried out, and a dimming command is issued according to requirements, so that the LED load can be remotely and finely dimmed and toned. The upper computer automatically controls the color temperature effect of the lamp every day according to a set time table and a corresponding color adjusting value, remote manual intervention can also be carried out to issue a color adjusting command according to requirements, and the functions enable the power supply system to be more intelligent and practical.

Description

Technical Field

[0001] The utility model relates to the field of voltage supply, in particular to an RS485 intelligent power supply with remote light and color adjustment functions. Background Art

[0002] With the advancement of science and technology and people's pursuit of quality of life, smart home systems are becoming more and more popular. Among them, smart power supplies, as an important part of smart home systems, have the advantages of remote control, energy saving, environmental protection, safety and reliability.

[0003] However, most existing smart power supplies can only achieve simple power switch control and cannot meet users' demands for refined control of light brightness and color temperature, and need to be improved. Utility Model Content

[0004] The utility model aims to provide an RS485 intelligent power supply with remote dimming and color adjustment functions to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An RS485 intelligent power supply with remote dimming and color adjustment functions, comprising:

[0007] The input filter module is used to filter out the clutter of the input AC power, suppress the power supply noise and electromagnetic interference in the circuit, and then convert the AC power into DC power;

[0008] A power control module, used to control the voltage output to the output filter circuit;

[0009] Output filter module, used to filter the input voltage and then supply it to the LED load;

[0010] RS485 communication module, used to establish communication with the host computer, receive the control signal of the host computer, and feed back to the power control module when receiving the dimming signal, and feed back to the output filter module when receiving the color adjustment signal;

[0011] The output end of the input filter module is connected to the first input end of the power control module, the output end of the power control module is connected to the first input end of the output filter module, and the output end of the RS485 communication module is connected to the second input end of the power control module and the second input end of the output filter module.

[0012] As a further solution of the utility model: the input filter module includes a common-mode inductor LF1, a common-mode inductor LF2, and a rectifier bridge BD1. The fourth end of the common-mode inductor LF1 is connected to the live wire ACL through a fuse F1, the third end of the common-mode inductor LF1 is connected to the neutral wire ACN through a thermistor NTC, the first end of the common-mode inductor LF1 is connected to the third end of the common-mode inductor LF2 and one end of the resistor RL2, the second end of the common-mode inductor LF1 is connected to the fourth end of the common-mode inductor LF2 and one end of the resistor RL1, the second end of the common-mode inductor LF2 is connected to the other end of the resistor RL1 and the third end of the rectifier bridge BD1, the first end of the common-mode inductor LF2 is connected to the other end of the resistor RL2 and the first end of the rectifier bridge BD1, the fourth end of the rectifier bridge BD1 is grounded, and the second end of the rectifier bridge BD1 is connected to the first input end of the power control module.

[0013] As a further solution of the utility model: the power control module includes a chip U1 and a field effect tube Q1. The model of the chip U1 is SY5882. Pin 8 of the chip U1 is connected to one end of the resistor R8A. The other end of the resistor R8A is connected to the cathode of the diode ZD2, the third end of the optocoupler U02, and one end of the resistor R8. The anode of the diode ZD2 is grounded. The fourth end of the optocoupler U02 is grounded. The other end of the resistor R8 is connected to the cathode of the diode D5B. The anode of the diode D5B is connected to the anode of the diode D5A. The diode D5 The negative electrode of A is connected to the emitter of transistor Q7 and one end of resistor R25, the collector of transistor Q7 is connected to the power supply voltage VCC, the other end of resistor R25 is connected to the base of transistor Q7, pin 5 of chip U1 is connected to one end of resistor R17 through resistor R16, the other end of resistor R17 is connected to the G pole of field effect transistor Q1, the S pole of field effect transistor Q1 is grounded through resistor RS3, the D pole of field effect transistor Q1 is connected to the first end of transformer T1, and the third end of transformer T1 is connected to the output end of the input filter module through inductor L5.

[0014] As a further solution of the utility model: the output filter module includes a diode D7, a capacitor EC1, a capacitor EC4, a capacitor EC7, a capacitor EC8, a MOS tube Q5, and a MOS tube Q6. The positive electrode of the diode D7 is connected to the seventh end of the transformer T1 and one end of the resistor R20. The negative electrode of the diode D7 is connected to one end of the capacitor C8, one end of the capacitor EC1, one end of the capacitor EC4, one end of the capacitor EC7, one end of the capacitor EC8, and a first end of the common-mode inductor L9. The other end of the capacitor C8 is connected to the other end of the resistor R20. The eighth end of the transformer T1 is grounded, the other end of the capacitor EC1 is grounded, the other end of the capacitor EC4 is grounded, the other end of the capacitor EC7 is grounded, the other end of the capacitor EC8 is grounded, and the second end of the common-mode inductor L9 is grounded. The first end is connected to the ground through the resistor RSS, the third end of the common-mode inductor L9 is connected to the positive terminal of the LED load, the fourth end of the common-mode inductor L9 is connected to the negative terminal of the LED load, the D terminal of the MOS tube Q5, one end of the resistor R53, the D terminal of the MOS tube Q6, and one end of the resistor R54, the S terminal of the MOS tube Q5 is connected to the white light cathode of the LED load, the other end of the resistor R53 is connected to the G terminal of the MOS tube Q5 and one end of the resistor R50, the other end of the resistor R50 is connected to the output end of the RS485 communication module, the S terminal of the MOS tube Q6 is connected to the yellow light cathode of the LED load, the other end of the resistor R54 is connected to the G terminal of the MOS tube Q6 and one end of the resistor R51, and the other end of the resistor R51 is connected to the output end of the RS485 communication module.

[0015] As a further solution of the utility model: the RS485 communication module includes a 485 module, the model of the 485 module is MC004, pins 6 and 7 of the 485 module are connected to the second input end of the output filter module, pin 8 of the 485 module is connected to one end of the resistor R01, the other end of the resistor R01 is connected to the first end of the optocoupler U02, and the second end of the optocoupler U02 is grounded.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model can remotely and finely realize the dimming and color adjustment functions of LED loads through the RS485 communication module, and automatically control the illumination effect of the lamp every day according to the set schedule and the corresponding dimming value through the host computer, and issue dimming commands as needed through remote manual intervention. The host computer automatically controls the color temperature effect of the lamp every day according to the set schedule and the corresponding color adjustment value, and can also issue color adjustment commands as needed through remote manual intervention. These functions make the power supply system more intelligent and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The circuit diagram of an RS485 intelligent power supply with remote dimming and color adjustment functions. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0019] See also Figure 1 , an RS485 intelligent power supply with remote dimming and color adjustment function, including:

[0020] The input filter module is used to filter out the clutter of the input AC power, suppress the power supply noise and electromagnetic interference in the circuit, and then convert the AC power into DC power;

[0021] A power control module, used to control the voltage output to the output filter circuit;

[0022] Output filter module, used to filter the input voltage and then supply it to the LED load;

[0023] RS485 communication module, used to establish communication with the host computer, receive the control signal of the host computer, and feed back to the power control module when receiving the dimming signal, and feed back to the output filter module when receiving the color adjustment signal;

[0024] The output end of the input filter module is connected to the first input end of the power control module, the output end of the power control module is connected to the first input end of the output filter module, and the output end of the RS485 communication module is connected to the second input end of the power control module and the second input end of the output filter module.

[0025] In this example: See Figure 1 The input filter module includes a common-mode inductor LF1, a common-mode inductor LF2, and a rectifier bridge BD1. The fourth end of the common-mode inductor LF1 is connected to the live wire ACL through a fuse F1, the third end of the common-mode inductor LF1 is connected to the neutral wire ACN through a thermistor NTC, the first end of the common-mode inductor LF1 is connected to the third end of the common-mode inductor LF2 and one end of the resistor RL2, the second end of the common-mode inductor LF1 is connected to the fourth end of the common-mode inductor LF2 and one end of the resistor RL1, the second end of the common-mode inductor LF2 is connected to the other end of the resistor RL1 and the third end of the rectifier bridge BD1, the first end of the common-mode inductor LF2 is connected to the other end of the resistor RL2 and the first end of the rectifier bridge BD1, the fourth end of the rectifier bridge BD1 is grounded, and the second end of the rectifier bridge BD1 is connected to the first input end of the power control module.

[0026] The AC filter circuit is composed of X capacitors CX1 and CX2, Y capacitors CY1 and CY2, and common mode inductors LF1 and LF2 to effectively filter the AC input end, suppress power supply noise and electromagnetic interference in the circuit, and thus improve the quality and reliability of the signal. The filtered voltage passes through the rectifier bridge BD1 for full-bridge rectification, converting the AC mains input power into unidirectional DC power to provide stable and effective DC input for subsequent circuits.

[0027] In this example: See Figure 1 The power control module includes a chip U1 and a field effect transistor Q1. The model of the chip U1 is SY5882. The No. 8 pin of the chip U1 is connected to one end of the resistor R8A. The other end of the resistor R8A is connected to the cathode of the diode ZD2, the third end of the optocoupler U02, and one end of the resistor R8. The anode of the diode ZD2 is grounded. The fourth end of the optocoupler U02 is grounded. The other end of the resistor R8 is connected to the cathode of the diode D5B. The anode of the diode D5B is connected to the anode of the diode D5A. The cathode of the diode D5A is connected to the third end of the optocoupler U02. The emitter of transistor Q7, one end of resistor R25, and the collector of transistor Q7 are connected to the power supply voltage VCC, the other end of resistor R25 is connected to the base of transistor Q7, pin 5 of chip U1 is connected to one end of resistor R17 through resistor R16, the other end of resistor R17 is connected to the G pole of field effect transistor Q1, the S pole of field effect transistor Q1 is grounded through resistor RS3, the D pole of field effect transistor Q1 is connected to the first end of transformer T1, and the third end of transformer T1 is connected to the output end of the input filter module through inductor L5.

[0028] Chip U1 controls the conduction state of field effect tube Q1, thereby changing whether the input side (third end, first end) of transformer T1 is grounded through field effect tube Q1, to change the energy stored in the coil on the input side of transformer T1, thereby changing the size of the DC power finally output by transformer T1. Optocoupler U02 (U02B and U02A are one optocoupler) receives the control signal of the RS485 communication module and feeds it back to pin 8 of chip U1 to adjust the conduction state of MOS tube Q1, thereby changing the size of the voltage finally output to the output filter module and realizing remote dimming.

[0029] Resistors R14B, R14A, R14, R15, capacitors C3, C3A, and diode D4 can effectively suppress overvoltage, provide overvoltage protection for field effect transistor Q1, and prevent field effect transistor Q1 from being damaged by excessive output power.

[0030] In this example: See Figure 1The output filter module includes a diode D7, a capacitor EC1, a capacitor EC4, a capacitor EC7, a capacitor EC8, a MOS tube Q5, and a MOS tube Q6. The positive electrode of the diode D7 is connected to the seventh end of the transformer T1 and one end of the resistor R20. The negative electrode of the diode D7 is connected to one end of the capacitor C8, one end of the capacitor EC1, one end of the capacitor EC4, one end of the capacitor EC7, one end of the capacitor EC8, and a first end of the common-mode inductor L9. The other end of the capacitor C8 is connected to the other end of the resistor R20. The eighth end of the transformer T1 is grounded, the other end of the capacitor EC1 is grounded, the other end of the capacitor EC4 is grounded, the other end of the capacitor EC7 is grounded, the other end of the capacitor EC8 is grounded, and the second end of the common-mode inductor L9 is connected through the resistor RS S is grounded, the third end of the common-mode inductor L9 is connected to the positive terminal of the LED load, the fourth end of the common-mode inductor L9 is connected to the negative terminal of the LED load, the D terminal of the MOS tube Q5, one end of the resistor R53, the D terminal of the MOS tube Q6, and one end of the resistor R54, the S terminal of the MOS tube Q5 is connected to the white light negative terminal of the LED load, the other end of the resistor R53 is connected to the G terminal of the MOS tube Q5 and one end of the resistor R50, the other end of the resistor R50 is connected to the output end of the RS485 communication module, the S terminal of the MOS tube Q6 is connected to the yellow light negative terminal of the LED load, the other end of the resistor R54 is connected to the G terminal of the MOS tube Q6 and one end of the resistor R51, and the other end of the resistor R51 is connected to the output end of the RS485 communication module.

[0031] The input DC power is filtered by capacitors EC1, EC4, EC7 and EC8 and then output to the LED load (LED+, LED-). Based on the different input DC power, the input voltage of the LED load is different, and the brightness is different, that is, the dimming function depends on the input voltage.

[0032] The RS485 communication module outputs PWM signals (PWM1, PWM2) to control the conduction state of MOS tubes Q5 and Q6, thereby changing the working state of white light and yellow light to achieve color adjustment.

[0033] In this example: See Figure 1 The RS485 communication module includes a 485 module, the model of the 485 module is MC004, the 6th and 7th pins of the 485 module are connected to the second input end of the output filter module, the 8th pin of the 485 module is connected to one end of the resistor R01, the other end of the resistor R01 is connected to the first end of the optical coupler U02, and the second end of the optical coupler U02 is grounded.

[0034] Dimming function: The RS485 communication module converts the dimming control signal received by the bus (A2 / B2) into a PWM signal, isolates it through the optocoupler U02 via the "DIM+" 8 pin, and transmits a stable PWM signal to the 8th pin of the main dimming chip U1, thereby controlling the current output to the LED load and achieving the effect of adjusting the illumination of the lamp.

[0035] Color adjustment function: The RS485 communication module converts the color adjustment control signal received by the bus (A2 / B2) into a PWM signal, and transmits the signal to the G pole of the MOS tube Q5 through the color adjustment control line "PWM1" to adjust the white light of the lamp; the signal is transmitted to the G pole of the MOS tube Q6 through the color adjustment control line "PWM2" to adjust the yellow light of the lamp; the warm and cold ratio of white light and yellow light is controlled to achieve the color adjustment effect of the lamp.

[0036] The working principle of the utility model is as follows: the input filter module is used to filter out the clutter of the input AC power, suppress the power supply noise and electromagnetic interference in the circuit, and then convert the AC power into DC power; the power control module is used to control the voltage output to the output filter circuit; the output filter module is used to filter the input voltage and then supply it to the LED load; the RS485 communication module is used to establish communication with the host computer, receive the control signal of the host computer, and when receiving the dimming signal, feed back to the power control module, and when receiving the color adjustment signal, feed back to the output filter module.

[0037] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0038] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An RS485 intelligent power supply with remote dimming and color adjustment function, characterized in that: The RS485 intelligent power supply with remote dimming and color adjustment function includes: The input filter module is used to filter out the clutter of the input AC power, suppress the power supply noise and electromagnetic interference in the circuit, and then convert the AC power into DC power; A power control module, used to control the voltage output to the output filter circuit; Output filter module, used to filter the input voltage and then supply it to the LED load; RS485 communication module, used to establish communication with the host computer, receive the control signal of the host computer, and feed back to the power control module when receiving the dimming signal, and feed back to the output filter module when receiving the color adjustment signal; The output end of the input filter module is connected to the first input end of the power control module, the output end of the power control module is connected to the first input end of the output filter module, and the output end of the RS485 communication module is connected to the second input end of the power control module and the second input end of the output filter module.

2. The RS485 intelligent power supply with remote dimming and color adjustment function according to claim 1, characterized in that: The input filter module includes a common-mode inductor LF1, a common-mode inductor LF2, and a rectifier bridge BD1. The fourth end of the common-mode inductor LF1 is connected to the live wire ACL through a fuse F1, the third end of the common-mode inductor LF1 is connected to the neutral wire ACN through a thermistor NTC, the first end of the common-mode inductor LF1 is connected to the third end of the common-mode inductor LF2 and one end of the resistor RL2, the second end of the common-mode inductor LF1 is connected to the fourth end of the common-mode inductor LF2 and one end of the resistor RL1, the second end of the common-mode inductor LF2 is connected to the other end of the resistor RL1 and the third end of the rectifier bridge BD1, the first end of the common-mode inductor LF2 is connected to the other end of the resistor RL2 and the first end of the rectifier bridge BD1, the fourth end of the rectifier bridge BD1 is grounded, and the second end of the rectifier bridge BD1 is connected to the first input end of the power control module.

3. The RS485 intelligent power supply with remote dimming and color adjustment function according to claim 1, characterized in that: The power control module includes a chip U1 and a field effect transistor Q1. The model of the chip U1 is SY5882. Pin 8 of the chip U1 is connected to one end of the resistor R8A. The other end of the resistor R8A is connected to the cathode of the diode ZD2, the third end of the optocoupler U02, and one end of the resistor R8. The anode of the diode ZD2 is grounded, the fourth end of the optocoupler U02 is grounded, the other end of the resistor R8 is connected to the cathode of the diode D5B, the anode of the diode D5B is connected to the anode of the diode D5A, and the cathode of the diode D5A is connected to the three-pole The emitter of transistor Q7, one end of resistor R25, and the collector of transistor Q7 are connected to the power supply voltage VCC, the other end of resistor R25 is connected to the base of transistor Q7, pin 5 of chip U1 is connected to one end of resistor R17 through resistor R16, the other end of resistor R17 is connected to the G pole of field effect transistor Q1, the S pole of field effect transistor Q1 is grounded through resistor RS3, the D pole of field effect transistor Q1 is connected to the first end of transformer T1, and the third end of transformer T1 is connected to the output end of the input filter module through inductor L5.

4. The RS485 intelligent power supply with remote dimming and color adjustment function according to claim 1, characterized in that: The output filter module includes a diode D7, a capacitor EC1, a capacitor EC4, a capacitor EC7, a capacitor EC8, a MOS tube Q5, and a MOS tube Q6. The positive electrode of the diode D7 is connected to the seventh end of the transformer T1 and one end of the resistor R20. The negative electrode of the diode D7 is connected to one end of the capacitor C8, one end of the capacitor EC1, one end of the capacitor EC4, one end of the capacitor EC7, one end of the capacitor EC8, and a first end of the common-mode inductor L9. The other end of the capacitor C8 is connected to the other end of the resistor R20. The eighth end of the transformer T1 is grounded, the other end of the capacitor EC1 is grounded, the other end of the capacitor EC4 is grounded, the other end of the capacitor EC7 is grounded, the other end of the capacitor EC8 is grounded, and the second end of the common-mode inductor L9 is connected through the resistor RSS. The common-mode inductor L9 is grounded, the third end of the common-mode inductor L9 is connected to the positive terminal of the LED load, the fourth end of the common-mode inductor L9 is connected to the negative terminal of the LED load, the D terminal of the MOS tube Q5, one end of the resistor R53, the D terminal of the MOS tube Q6, and one end of the resistor R54, the S terminal of the MOS tube Q5 is connected to the white light cathode of the LED load, the other end of the resistor R53 is connected to the G terminal of the MOS tube Q5 and one end of the resistor R50, the other end of the resistor R50 is connected to the output end of the RS485 communication module, the S terminal of the MOS tube Q6 is connected to the yellow light cathode of the LED load, the other end of the resistor R54 is connected to the G terminal of the MOS tube Q6 and one end of the resistor R51, and the other end of the resistor R51 is connected to the output end of the RS485 communication module.

5. The RS485 intelligent power supply with remote dimming and color adjustment function according to any one of claims 1 to 4, characterized in that: The RS485 communication module includes a 485 module, the model of the 485 module is MC004, pins 6 and 7 of the 485 module are connected to the second input end of the output filter module, pin 8 of the 485 module is connected to one end of a resistor R01, the other end of the resistor R01 is connected to a first end of an optocoupler U02, and a second end of the optocoupler U02 is grounded.

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