LED power supply color temperature switching control system

Abstract

The utility model discloses an LED power supply color temperature switching control system, and relates to the technical field of circuit control. The color temperature switching control system for the LED power supply comprises a microcontroller, a color temperature switching module and a color temperature switching module, the LED power supply circuit is electrically connected with the microcontroller; the plurality of first LED lamps are connected in series between the first end and the second end of the LED power supply circuit; the first switch tube is electrically connected with the first LED lamp, the second end of the LED power supply circuit and the microcontroller respectively; the plurality of second LED lamps are connected in parallel with the first LED lamps and are connected in series between the first end and the second end of the LED power supply circuit; and the second switch tube is electrically connected with the second LED lamp, the second end of the LED power supply circuit and the microcontroller respectively. According to the utility model, the problems that the color temperature of the current mainstream LED lamp is switched through a mechanical switch, and the switch is generally arranged on the lamp, so that the operation is very inconvenient when the color temperature needs to be switched are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit control technical field especially relates to a LED power color temperature switching control system. BACKGROUND

[0002] The novel LED illuminating lamp has the advantages of high light efficiency, long service life, environmental protection and the like, replaces traditional illuminating lamps such as incandescent lamp, fluorescent lamp and the like in many applications, and the driving and control mode of LED is simple, and it is convenient to flexibly adjust luminous brightness.

[0003] Some occasions need LED lamps to have the function of switching light color temperature, but the mainstream LED lamps at present switch color temperature through mechanical switch, and the switch is generally installed on the lamp, therefore when needing to switch color temperature, the operation is very inconvenient. In view of the above problems, the industry has not yet proposed an effective solution. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a LED power color temperature switching control system to at least solve one of the problems in the prior art.

[0005] Technical scheme: a LED power color temperature switching control system, comprising:

[0006] Microcontroller;

[0007] LED power circuit, electrically connected with the microcontroller;

[0008] A plurality of first LED lamps are connected in series between the first end and the second end of the LED power circuit;

[0009] First switch tube is electrically connected with the first LED lamp, the second end of the LED power circuit and the microcontroller respectively;

[0010] A plurality of second LED lamps are connected in parallel with the first LED lamp and connected in series between the first end and the second end of the LED power circuit; And

[0011] Second switch tube is electrically connected with the second LED lamp, the second end of the LED power circuit and the microcontroller respectively;

[0012] Wherein, the first switch tube and second switch tube are controlled to act by the control signal sent by the microcontroller, so that the first switch tube and second switch tube drive a plurality of first LED lamps and a plurality of second LED lamps to light up or extinguish respectively, to control LED lamp to switch color temperature.

[0013] As preferred, the microcontroller comprises a CLK pin for detecting the level of the first diode and recording the state of the LED lamp.

[0014] As preferred, the LED power supply circuit comprises a first diode, the anode of which is electrically connected with the CLK pin of the microcontroller.

[0015] As preferred, the microcontroller further comprises an EEPROM or a register for recording the color temperature state.

[0016] As preferred, the LED power supply circuit comprises a rectifier bridge composed of four diodes for converting external alternating current into direct current.

[0017] As preferred, the LED power supply circuit further comprises an RC filter circuit.

[0018] As preferred, the LED power supply circuit further comprises a transformer, which comprises a primary winding, a secondary winding and an auxiliary winding, one end of the primary winding being connected with the positive electrode of the rectifier bridge, the other end being connected with the main switch tube of the master control chip of the LED power supply circuit.

[0019] One end of the secondary winding is connected with the anode of the first diode, and the other end is connected to the output ground.

[0020] One end of the auxiliary winding is connected to the VCC pin of the master control chip of the LED power supply circuit, and the other end is connected to the ground and stabilized by a diode and a filter capacitor.

[0021] As preferred, the first switch tube and the second switch tube are NMOS.

[0022] As preferred, the model of the microcontroller is PL51T020.

[0023] Beneficial effects: In the embodiment of the present application, the microcontroller is used to automatically switch and control, the microcontroller sends a control signal to control the first switch tube and the second switch tube to act, and the first switch tube and the second switch tube drive a plurality of first LED lamps and a plurality of second LED lamps to light up or turn off, respectively, to control the switching of the color temperature of the LED lamp, so as to achieve the purpose of automatically and cyclically switching the color temperature of the light, thereby realizing the technical effects of improving the service life of the switching device and flexibly switching the color temperature state, and further solving the technical problem that some existing occasions require LED lamps to have the function of switching the color temperature of light, but the current mainstream LED lamps switch the color temperature through mechanical switches, and the switches are generally installed on the lamps, so that it is very inconvenient to operate when the color temperature needs to be switched. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1It is the LED power color temperature switching control system structure schematic diagram of the utility model.

[0025] Fig. 2 It is the LED power color temperature switching control system electrical schematic diagram of the utility model.

[0026] The reference signs are:

[0027] 10, microcontroller;

[0028] 20, LED power circuit;

[0029] 30, first LED lamp;

[0030] 40, first switch tube;

[0031] 50, second LED lamp;

[0032] 60, second switch tube. DETAILED DESCRIPTION

[0033] In order to make the personnel in the technical field better understand the present application scheme, the technical scheme in the present application embodiment will be clearly and completely described below in combination with the drawings in the present application embodiment. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the present application.

[0034] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0035] In addition, the terms "mount", "set", "provided with", "connect", "connect", "socket" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally configured; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication between two devices, elements or components. For the person skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0036] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] As shown in Figs. 1-2 The present application relates to an LED power color temperature switching control system. The LED power color temperature switching control system comprises a microcontroller 10; the microcontroller 10 (MCU) is the core control unit of the entire circuit, which has the following functions including but not limited to: logic control, the microcontroller 10 generates corresponding control signals through internal programming according to the received signals, and outputs to the first switch tube 40 and the second switch tube 60;

[0038] drive control, the control signal output by the microcontroller 10 is used to control the conduction or cutoff state of the first switch tube 40 and the second switch tube 60, so as to realize accurate control of the LED lamp;

[0039] Of course, a single-chip microcomputer can also be used as the main controller, which is not limited in the present application.

[0040] The LED power circuit 20 is electrically connected with the microcontroller 10; it can provide stable direct current voltage for driving the LED lamp string to light up;

[0041] Specifically, the first end (LED+): the positive electrode of the LED lamp string; the second end (LED-): connected to the ground through the switch tube; the power circuit supports multiple groups of LED lamps in parallel, ensuring that each group of lamps can work normally.

[0042] A plurality of first LED lamps 30 are connected in series between the first end and the second end of the LED power circuit 20; they can achieve good electrical connection effect, so as to realize the lighting or extinguishing of multiple first LED lamps 30.

[0043] The first switch tube 40 is electrically connected with the first LED lamp 30, the second end of the LED power circuit 20 and the microcontroller 10 respectively; by setting the first switch tube 40, the good lighting or extinguishing of the plurality of first LED lamps 30 can be controlled. In the present application, the first switch tube is Q2.

[0044] A plurality of second LED lamps 50 are connected in parallel with the first LED lamp 30 and connected in series between the first end and the second end of the LED power circuit 20; they can achieve good electrical connection effect, so as to realize the lighting or extinguishing of multiple second LED lamps 50

[0045] The second switch tube 60 is electrically connected with the second LED lamp 50, the second end of the LED power supply circuit 20 and the microcontroller 10 respectively. By arranging the second switch tube 60, the lighting or extinguishing of the second LED lamp 50 can be controlled. In the application, the second switch tube is Q3.

[0046] The microcontroller 10 sends a control signal to control the actions of the first switch tube 40 and the second switch tube 60, so that the first switch tube 40 and the second switch tube 60 drive the first LED lamp 30 and the second LED lamp 50 to light up or extinguish, thereby controlling the switching of the color temperature of the LED lamp.

[0047] When the switch tube is turned on, the negative electrode of the corresponding LED lamp group is connected, and the LED lamp is lit. When the switch tube is turned off, the negative electrode of the LED lamp group is cut off, and the LED lamp is extinguished. By switching the first LED lamp 30 group and the second LED lamp 50 group, the color temperature switching is realized.

[0048] The circuit of the application can control the switching of the color temperature of the lamp by the microcontroller 10 or the single-chip microcomputer, and the mechanical switch is cancelled. Each time the LED lamp is powered on, the color temperature of the light changes. The three color temperatures can be switched cyclically, and the three color temperatures can be cold white light, mixed light and warm white light.

[0049] The application adopts an LED power color temperature controller with a memory function. The color temperature state of the LED lamp is saved by the single-chip microcomputer, that is, the state of the LED lamp before the light is turned off can be remembered, and the light can be directly switched to another state when the light is turned on next time, thereby increasing the convenience of use. The whole control circuit is simple and reliable.

[0050] From the above description, it can be seen that the application achieves the following technical effects:

[0051] In the embodiment of the application, the microcontroller 10 is used to automatically switch and control. The microcontroller 10 sends a control signal to control the actions of the first switch tube 40 and the second switch tube 60, so that the first switch tube 40 and the second switch tube 60 drive the first LED lamp 30 and the second LED lamp 50 to light up or extinguish, thereby controlling the switching of the color temperature of the LED lamp. The purpose of automatically and cyclically switching the color temperature of the light is achieved, thereby realizing the technical effects of improving the service life of the switching device and flexibly switching the color temperature state. Furthermore, the technical problem that some existing LED lamps need to have the function of switching the color temperature of the light, but the mainstream LED lamps currently use mechanical switches to switch the color temperature, and the switches are generally installed on the lamps, so that it is very inconvenient to operate when the color temperature needs to be switched is solved.

[0052] Further, the microcontroller 10 comprises a CLK pin for detecting the level of the first diode D1 and recording the state of the LED lamp. It can be understood that the CLK pin of the single-chip microcomputer detects the level of the first diode D1, and when the switch is turned off, that is, the low level, the state recorded by the single-chip microcomputer will change accordingly, and when the switch is turned on, the single-chip microcomputer will control the first switch tube Q2 and the second switch tube Q3 to be turned on according to the recorded state, thereby controlling the LED lamp to switch different color temperatures.

[0053] Specifically, the CLK pin is a special input port of the microcontroller 10 for signal detection, and its main function is to detect the level of the first diode D1. The CLK pin monitors the level change of the first diode D1 in real time, thereby obtaining the working state (lighting or extinguishing) of the LED lamp.

[0054] Recording the state of the LED lamp, the microcontroller 10 stores the current working state of the LED lamp in the internal memory according to the signal detected by the CLK pin, for subsequent use.

[0055] Signal acquisition function, the CLK pin is connected to one end of the first diode D1 for real-time acquisition of the voltage signal at this point.

[0056] High level: indicating that the first diode D1 is turned on, and the LED lamp is lit.

[0057] Low level: indicating that the first diode D1 is not turned on, and the LED lamp is extinguished.

[0058] State judgment, the logic judgment module in the microcontroller 10 judges the working state of the LED lamp according to the high and low levels of the CLK pin: if it is high, it records that the LED lamp is in the "lighting" state; if it is low, it records that the LED lamp is in the "extinguishing" state.

[0059] State recording, the microcontroller 10 stores the judgment result in its internal memory for subsequent logic processing or fault monitoring.

[0060] Further, the LED power supply circuit 20 comprises a first diode D1, the anode of which is electrically connected with the CLK pin of the microcontroller 10. It can be understood that good electrical connection effect can be achieved, thereby providing guarantee for accurate signal acquisition.

[0061] Further, the microcontroller 10 further comprises an EEPROM or a register for recording the color temperature state. It can be understood that good recording effect can be achieved, thereby avoiding the loss of data due to power failure.

[0062] Further, the LED power supply circuit 20 comprises a rectifier bridge composed of four diodes for converting external alternating current into direct current.

[0063] A diode is a unidirectional conductive electronic element that only allows current to flow from its anode (P terminal) to cathode (N terminal). In the rectifier bridge, the diode uses its unidirectional conductivity to convert both positive and negative half cycles of alternating current into direct current signals with unidirectional current flow.

[0064] Further, the LED power supply circuit 20 further comprises an RC filter circuit. It can be understood that good filtering effect can be achieved.

[0065] Further, the LED power supply circuit 20 further comprises a transformer, the transformer comprising a primary winding, a secondary winding and an auxiliary winding, one end of the primary winding being connected to the positive electrode of the rectifier bridge, the other end being connected to the main switch tube of the main control chip of the LED power supply circuit 20.

[0066] One end of the secondary winding is connected to the anode of the first diode, and the other end is connected to the output ground.

[0067] One end of the auxiliary winding is connected to the VCC pin of the main control chip of the LED power supply circuit 20, and the other end is connected to the ground and stabilized by the diode and the filter capacitor.

[0068] Further, the first switch tube 40 and the second switch tube 60 are NMOS. It can be understood that the effect of easy implementation and precise control can be achieved.

[0069] Further, the model of the microcontroller 10 is PL51T020. It can be understood that good electrical control effect can be achieved.

[0070] Of course, as a person skilled in the art, the electrical schematic diagram in the present application should be understood and understood.

[0071] The preferred embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, various equivalent transformations of the technical solutions of the present application can be made, and these equivalent transformations all belong to the protection scope of the present application.

Claims

1. An LED power supply color temperature switching control system, characterized by, The application relates to a microcontroller (10), an LED power supply circuit (20) electrically connected to the microcontroller (10), a plurality of first LED lamps (30) arranged in series between a first end and a second end of the LED power supply circuit (20), a first switch tube (40) electrically connected to the first LED lamp (30), the second end of the LED power supply circuit (20) and the microcontroller (10) respectively, a plurality of second LED lamps (50) arranged in parallel with the first LED lamp (30) and in series between the first end and the second end of the LED power supply circuit (20), and a second switch tube (60) electrically connected to the second LED lamp (50), the second end of the LED power supply circuit (20) and the microcontroller (10) respectively. The microcontroller (10) comprises a CLK pin for detecting the level of a first diode and recording the state of the LED lamp. The LED power supply circuit (20) comprises a first diode with an anode electrically connected to the CLK pin of the microcontroller (10). The microcontroller (10) further comprises an EEPROM or a register for recording the color temperature state. The LED power supply circuit (20) comprises a rectifier bridge composed of four diodes for converting external alternating current into direct current. The LED power supply circuit (20) further comprises an RC filter circuit. The LED power supply circuit (20) further comprises a transformer comprising a primary winding, a secondary winding and an auxiliary winding, one end of the primary winding being connected to the positive electrode of the rectifier bridge, the other end being connected to the main switch tube of the main control chip of the LED power supply circuit (20). One end of the secondary winding is connected to the anode of the first diode, and the other end is connected to the output ground.

2. The LED power color temperature switching control system of claim 1, wherein, One end of the auxiliary winding is connected to the VCC pin of the main control chip of the LED power supply circuit (20), the other end is connected to the ground, and the voltage is stabilized through a diode and a filter capacitor.

3. The LED power color temperature switching control system of claim 2, wherein, The first switch tube (40) and the second switch tube (60) are NMOS.

4. The LED power color temperature switching control system of claim 1, wherein, The model of the microcontroller (10) is PL51T020.

5. The LED power color temperature switching control system of claim 1, wherein, ​ 6. The LED power color temperature switching control system of claim 1, wherein, ​ 7. The LED power color temperature switching control system of claim 6, wherein, ​ ​ ​ 8. The LED power color temperature switching control system of claim 1, wherein, ​ 9. The LED power color temperature switching control system of claim 1, wherein, ​

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