CN217770429U

CN217770429U - Zero-line-free dimming system power supply

Info

Publication number: CN217770429U
Application number: CN202221429558.8U
Authority: CN
Inventors: 赵显明; 马士强
Original assignee: Jiale Technology Co ltd
Current assignee: Xiamen Seebest Technology Co ltd
Priority date: 2022-06-09
Filing date: 2022-06-09
Publication date: 2022-11-08
Anticipated expiration: 2032-06-09

Abstract

The utility model provides a no zero line dimming system power supply belongs to power supply technical field. It has solved current supply source and can't provide stable operating power scheduling problem. Zero line-free dimming system power supply comprises an alternating current power supply, a dimming system and a load which are connected in series, the dimming system comprises a rectification control circuit, a setting circuit, a comparison circuit, a switching circuit, a standby power supply and an intelligent controller, the rectification control circuit is used for rectifying alternating current voltage and outputting pulsating voltage, the setting circuit receives the pulsating voltage and outputs trough interval voltage, the comparison circuit receives the trough interval voltage and outputs result signals, the switching circuit receives the result signals and outputs breakover voltage or base voltage, the standby power supply receives the breakover voltage and outputs compensation voltage, and the intelligent controller comprises a wireless connection module. The utility model has the advantages of can make dimming system steady operation through dual supply compensation power supply.

Description

Zero-line-free dimming system power supply

Technical Field

The utility model belongs to the technical field of power supply, in particular to no zero line dimming system power supply.

Background

In the field of light-emitting control, a dimmer is used to adjust the light-emitting brightness of a lamp load. The dimmer is connected in series between a power supply and a lamp load (load), a switch is arranged in the dimmer through a phase control technology, and the dimmer is switched on or off according to the fixed phase angle relation formed by the phase of an alternating current power supply, so that the effect of controlling the luminous brightness of the load is achieved. The dimming modes of the conventional dimmer include: silicon controlled rectifier dimming (leading phase control), MOSFET soft switching dimming (lagging phase control) is used, and modes such as wireless communication system dimming, switch dimming and the like are added; silicon controlled rectifier dimming and MOSFET soft switching dimming mode are used to change the effective output voltage of the power grid in a chopping mode to perform dimming; in the wireless communication dimming mode, a wireless transmitting unit is added in the dimmer, a wireless receiving unit is added in the lamp, and the dimming is realized by adopting the traditional wireless communication protocols (ZigBee, WIFI, bluetooth and the like).

Furthermore, the lamp load and the dimmer are powered by a single power source (e.g., commercial power), wherein, for SCR dimming, the single power source can provide stable power for the lamp load and the dimmer since no other components are required to supply additional power.

However, in the case of using MOSFET soft switching dimming and adding the wireless communication dimming mode, since the working power required by the wireless transmitting unit and the wireless receiving unit needs to be added, when a single power supply needs to provide working power to the lamp load, the dimmer, the wireless transmitting unit and the wireless receiving unit at the same time, the required working power is increased, so that the single power supply cannot provide stable working power, and the dimmer cannot stably dim in a wireless communication manner.

To solve the above problems, a power supply is needed to provide the operating power required by the system according to the operating status of the dimming system, so as to achieve the effect of stable operation of the system.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide one kind and can provide the no zero line dimming system power supply of adjusting luminance of the required working power of system according to dimming system's user state.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a no zero line dimming system power supply which characterized in that, dimming system and load including alternating current power supply and series connection, dimming system include rectifier control circuit, setting circuit, comparison circuit, switching circuit, stand-by power supply, intelligent control ware, rectifier control circuit be used for alternating current voltage rectification and output pulsating voltage, setting circuit receive pulsating voltage and output trough interval voltage, comparison circuit receive trough interval voltage and output result signal, switching circuit receive result signal output break-over voltage or basic voltage, stand-by power supply receive break-over voltage and output compensating voltage, intelligent control ware include the wireless connection module, when the wireless connection module starts, intelligent control ware receive compensating voltage and output whether switching power supply instruction.

The utility model discloses a theory of operation: when the intelligent controller is in a general use state, the alternating current power supply provides power needed by the dimming system, and when the wireless connection module in the intelligent controller is started, the standby power supply can be started through the switching circuit to provide compensation voltage for the intelligent controller; through the mutual compensation power supply mode of dual supply, make the utility model discloses dimming system can steady operation and operation.

In the above-mentioned zero-line-free dimming system power supply, the rectification control circuit includes a rectification block and a load output control block, and the load output control block includes a first mosfet and a second mosfet.

In the above-mentioned zero-line-free dimming system power supply, the setting circuit includes a first setting resistor, a second setting resistor, a third setting resistor, a fourth setting resistor, and a zener diode.

In the above-mentioned zero-line-free dimming system power supply, the comparison circuit includes a first comparator and a bipolar transistor.

In the above-mentioned zero-line-free dimming system, the switching circuit includes a transistor, a differential amplifier, a first resistor, a second resistor, and a trigger.

In the above-mentioned zero-line-free dimming system power supply, the switching circuit is connected with a cut-off circuit and a standby power supply.

In the above power supply of the zero-line-free dimming system, the cut-off circuit includes a triode, and the cut-off circuit is coupled to the switching circuit.

In the above-mentioned zero-line-free dimming system, the intelligent controller includes a wireless connection module, a control module and a manual control interface.

In the power supply of the zero-line-free dimming system, the comparison circuit is connected with a power detection and judgment circuit.

In the power supply of the zero-line-free dimming system, the power detection and judgment circuit comprises a filter capacitor, a second comparator, a third resistor and a fourth resistor.

Compared with the prior art, the utility model has the advantages of can make dimming system steady operation through dual supply compensation power supply.

Drawings

Fig. 1 is a schematic diagram of the system architecture of the present invention.

Fig. 2 is a schematic circuit diagram of the system of the present invention.

Fig. 3 is a schematic diagram (a) of the waveform of the present invention.

Fig. 4 is a schematic diagram (ii) of the waveform of the present invention.

In the figure, 1, an alternating current power supply; 2. a load; 10. a rectification control circuit; 11. a rectification block; 12. a load output control block; 20. a setting circuit; 21. a first set resistance; 22. a second set resistance; 23. a third set resistance; 24. a fourth setting resistance; 25. a Zener diode; 30. a comparison circuit; 31. a first comparator; 32. a bipolar transistor; 40. a switching circuit; 41. a transistor; 42. a differential amplifier; 43. a first resistor; 44. a second resistor; 45. a trigger; 50. a standby power supply; 60. a cutoff circuit; 70. an intelligent controller; 71. a control module; 72. a wireless connection module; 73. a manual control interface; 80. a power detection and judgment circuit; 81. a filtering capacitor; 82. a third resistor; 83. a fourth resistor; 84. a second comparator; 100. a dimming system; 121. a first metal oxide semiconductor field effect transistor; 122. a second metal oxide semiconductor field effect transistor; A. a power node; v1, alternating voltage; v2, pulsating voltage; v3, critical voltage; v4, voltage between wave troughs; v5, compensation voltage; vf, threshold voltage.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-4, the power supply of the zero-line-free dimming system includes an ac power supply 1, a dimming system 100 and a load 2 connected in series, the dimming system 100 includes a rectification control circuit 10, a setting circuit 20, a comparison circuit 30, a switching circuit 40, a standby power supply 50, and an intelligent controller 70, the rectification control circuit 10 is configured to rectify an ac voltage and output a ripple voltage V2, the setting circuit 20 receives the ripple voltage and outputs a voltage V4 between troughs, the comparison circuit 30 receives the voltage V4 between troughs and outputs a result signal, the switching circuit 40 receives the result signal and outputs a conducting voltage or a base voltage, the standby power supply 50 receives the conducting voltage and outputs a compensation voltage V5, the intelligent controller 70 includes a wireless connection module 72, and when the wireless connection module 72 is activated, the intelligent controller 70 receives the compensation voltage V5 and outputs a power switching command.

In more detail, the rectification control circuit 10 includes a rectification block 11 and a load output control block 12, the load output control block 12 includes a first mosfet 121 and a second mosfet 122, the rectification control circuit 10 rectifies the ac voltage V1 and outputs a pulsating voltage V2 from an output terminal of the rectification block 11.

To be more specific, the setting circuit 20 includes a first setting resistor 21, a first setting resistor 22, a third setting resistor 23, a fourth setting resistor 24 and a zener diode 25, the setting circuit 20 sets a threshold voltage V3 corresponding to the pulsating voltage V2 according to the characteristics of the load 2, and the threshold voltage V3 extracts the pulsating voltage V2 and outputs a voltage V4 between troughs.

In more detail, the comparison circuit 30 includes a first comparator 31 and a bipolar transistor 32, the comparison circuit 30 compares the valley region voltage V4 with a threshold voltage Vf to output a result signal, when the valley region voltage V4 is equal to or less than the threshold voltage Vf, the bipolar transistor 32 is turned on; when the valley voltage is at the threshold voltage Vf, the bipolar transistor 32 is not conducted, so the resulting signal is the signal indicating whether the bipolar transistor 32 is conducted or not.

In more detail, the switching circuit 40 includes a transistor 41, a differential amplifier 42, a first resistor 43, a second resistor 44, and a flip-flop 45, the switching circuit 40 outputs a turn-on voltage according to the result signal or outputs a basic voltage corresponding to the setting circuit 20, the differential amplifier 42 amplifies the turn-on voltage of the transistor 41 into an amplified voltage, the amplified voltage is divided by the first resistor 43 and the second resistor 44 and input to the positive input terminal of the flip-flop 45, the output terminal of the flip-flop 45 outputs the turn-on voltage, and the standby power supply 50 is triggered.

To be more specific, the switching circuit 40 is connected with a cut-off circuit 60 and a standby power supply 50, the standby power supply 50 is coupled with the trigger 45 of the switching circuit 40, the standby power supply 50 outputs a compensation voltage V5 according to the conducting voltage, a power node a is coupled with the switching circuit 40 and the standby power supply 50, the base voltage or the compensation voltage V5 is input to the power node a, and the voltage of the power node a is the base voltage or the compensation voltage V5; wherein the voltage of the power node A is provided to the operation power input terminal of the first comparator 31 of the comparison circuit 30, the operation power input terminal of the differential amplifier 42, the operation power input terminal of the flip-flop 45 and the power input terminal of the intelligent controller 70.

In further detail, the cut-off circuit 60 includes a transistor, the cut-off circuit 60 is coupled to the switching circuit 40 and the standby power source 50, and the cut-off circuit 60 cuts off the input power node a of the basic voltage according to the compensation voltage V5.

To put it more concretely, the intelligent controller 70 includes a wireless connection module 72, a control module 71 and a manual control interface 73, the intelligent controller 70 is coupled with the power node a, and the control module 71 can control the brightness of the light emitted by the load 2; the wireless connection module 72 is used to wirelessly connect with the intelligent mobile device, and operate the control module 71 in a wireless connection manner to further control the light-emitting brightness of the load 2; the manual control interface 73 is used to provide a wired connection way to operate the control module 71 from the outside so as to control the light emitting brightness of the load 2.

To be more specific, the comparison circuit 30 is connected to a power detection and determination circuit 80.

To be more specific, the power detection and determination circuit 80 includes a filtering capacitor 81, a second comparator 84, a third resistor, and a fourth resistor, wherein the voltage of the power node a is filtered by the filtering capacitor 81, and then divided by the third resistor and the fourth resistor to generate a detection voltage, the detection voltage is inputted to the positive input terminal of the second comparator 84, the second comparator 84 outputs a system voltage signal to the control module 71 of the intelligent controller 70, when the conducting signal outputted by the control module 71 is that the voltage of the current power node a is insufficient, it indicates that the power used by the load 2 is excessive, that is, the light-emitting brightness of the load 2 exceeds the set limit, the load 2 is turned off by the load output control block 12, so that the light-emitting brightness of the load 2 is not increased, and the load 2 is prevented from using excessive power; on the contrary, when the on signal outputted by the control module 71 is that the voltage of the current power node a is sufficient, it means that the power used by the load 2 is appropriate, that is, the light emitting brightness of the load 2 is appropriate, and the load 2 is kept on through the load output control block 12.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although a large number of terms are used here more, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any one of the additional limitations of the present invention.

Claims

1. The utility model provides a no zero line dimming system power supply, characterized in that, dimming system (100) and load (2) including alternating current power supply (1) and series connection, dimming system (100) include rectifier control circuit (10), setting circuit (20), comparison circuit (30), switching circuit (40), stand-by power supply (50), intelligent control ware (70), rectifier control circuit (10) be used for with alternating current voltage rectification and output ripple voltage (V2), setting circuit (20) receive ripple voltage (V2) and output trough interval voltage (V4), comparison circuit (30) receive trough interval voltage (V4) and output result signal, switching circuit (40) receive result signal output conduction voltage or basic voltage, stand-by power supply (50) receive conduction voltage and output compensation voltage (V5), intelligent control ware (70) include wireless connection module (72), when wireless connection module (72) start, intelligent control ware (70) receive compensation voltage (V5) and output whether switch over the power supply instruction.

2. A zero-line-less dimming system supply power according to claim 1, wherein: the rectification control circuit (10) comprises a rectification block (11) and a load output control block (12), wherein the load output control block (12) comprises a first metal oxide semiconductor field effect transistor (121) and a second metal oxide semiconductor field effect transistor (122).

3. A zero-line-less dimming system supply power according to claim 1, wherein: the setting circuit (20) comprises a first setting resistor (21), a second setting resistor (22), a third setting resistor (23), a fourth setting resistor (24) and a zener diode (25).

4. A zero-line-less dimming system supply power according to claim 1, wherein: the comparator circuit (30) includes a first comparator (31) and a bipolar transistor (32).

5. A zero-line-less dimming system supply power according to claim 1, wherein: the switching circuit (40) includes a transistor (41), a differential amplifier (42), a first resistor (43), a second resistor (44), and a flip-flop (45).

6. A zero-line-less dimming system supply power according to claim 1, wherein: the switching circuit (40) is connected with a cut-off circuit (60) and a standby power supply (50).

7. A zero-line-less dimming system supply power according to claim 6, wherein: the cut-off circuit (60) comprises a triode, and the cut-off circuit (60) is coupled with the switching circuit (40).

8. A zero-line-less dimming system supply power according to claim 1, wherein: the intelligent controller (70) comprises a wireless connection module (72), a control module (71) and a manual control interface (73).

9. A zero-line-less dimming system supply power according to claim 1, wherein: the comparison circuit (30) is connected with a power detection judgment circuit (80).

10. A zero-line-less dimming system supply of claim 9, wherein: the power detection and judgment circuit (80) comprises a filter capacitor (81), a second comparator (84), a third resistor (82) and a fourth resistor (83).