Lamp control circuit with EMC function

Abstract

The utility model belongs to the technical field of lighting equipment, and particularly relates to a lamp control circuit with an EMC (Electro Magnetic Compatibility) function, which comprises a main control circuit, a driving circuit, a power supply circuit and an anti-interference circuit, the main control circuit comprises a main control chip; the driving circuit is connected with the main control chip; the power supply circuit is connected with the main control chip and the driving circuit; the input end of the anti-interference circuit is connected with the driving circuit, and the output end of the anti-interference circuit is used for being connected with a lamp. The master control circuit, the driving circuit, the power supply circuit and the anti-interference circuit are arranged, and the anti-interference circuit is connected between the driving circuit and the external lamp, so that the electromagnetic compatibility of the circuit is improved, and the problem that the lamp in the prior art does not have an EMC function and is inconvenient to use is effectively solved. Other equipment is easily interfered; and the service life is easily shortened due to large current.

Description

TECHNICAL FIELD

[0001] The utility model belongs to lighting equipment technical field especially, it relates to a lamp control circuit with EMC function. BACKGROUND

[0002] EMC (ElectroMagnetic Compatibility) is electromagnetic compatibility, and the ability that equipment or system can normally work in its electromagnetic environment and does not cause unacceptable electromagnetic interference to other equipment in the environment.

[0003] The lamp in prior art lacks necessary EMC design and authentication, and can produce various adverse effects: on the one hand, the high-frequency electromagnetic wave and pulse signal generated in its work can interfere with the wireless or wired communication of other electronic equipment in the surrounding, leading to audio equipment noise, measurement instrument error, intelligent equipment failure, etc.; on the other hand, its own is also prone to brightness flicker, dimming or control failure, and even shortened service life due to excessive current stress. Therefore, it is necessary to improve the prior art to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model discloses a lamp control circuit with EMC function, which aims to solve the technical problems that the lamp in prior art does not have EMC function, is easy to interfere with other equipment and is easy to reduce service life due to large current.

[0005] To achieve the above object, the utility model embodiment provides a lamp control circuit with EMC function, which comprises a main control circuit, a driving circuit, a power supply circuit and an anti-interference circuit.

[0006] As a preferred scheme, the driving circuit comprises a driving chip, the fifteenth pin of the driving chip is connected with the power supply circuit, the second pin of the driving chip is connected with the eighth pin of the main control chip, the seventh pin of the driving chip is connected with the third pin of the main control chip, and the third pin of the driving chip is connected with the power supply circuit.

[0007] As a preferred scheme, the anti-interference circuit comprises a common mode inductor and a filter capacitor, the first end and the second end of the common mode inductor are connected with the driving chip, the third end and the fourth end of the common mode inductor are used for connecting external lamps, and the two ends of the filter capacitor are respectively connected with the third end and the fourth end of the common mode inductor.

[0008] As a preferred solution, the anti-interference circuit further comprises a first resistor and a second resistor, two ends of the first resistor are connected to the first end and the third end of the common mode inductor respectively, and two ends of the second resistor are connected to the second end and the fourth end of the common mode inductor respectively.

[0009] As a preferred solution, the model of the driving chip is MP3398AGF.

[0010] As a preferred solution, the power supply circuit comprises a power supply socket and a voltage stabilizing chip, the power supply socket is used for connecting external power supply, a second pin of the voltage stabilizing chip is connected to the power supply socket, and a third pin of the voltage stabilizing chip is connected to the master control chip and the driving circuit.

[0011] As a preferred solution, the power supply socket is a Type-C female socket.

[0012] As a preferred solution, an indicator light circuit is further included, and the indicator light circuit is connected to the third pin of the voltage stabilizing chip.

[0013] As a preferred solution, a touch switch is further included, and the touch switch is connected to the first pin of the master control chip.

[0014] As a preferred solution, the model of the master control chip is DLT8S04A.

[0015] The above one or more technical solutions in the lamp control circuit with the EMC function provided by the embodiments of the present application at least have one of the following technical effects:

[0016] The lamp control circuit with the EMC function provided by the embodiments of the present application has the following technical effects: BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 The circuit principle diagram of the lamp control circuit with the EMC function provided by the embodiments of the present application is shown in the following figure:

[0019] In the figure, various reference signs are as follows:

[0020] 100 - master control circuit; 200 - drive circuit; 300 - power supply circuit; 400 - anti-interference circuit; 500 - indicator light circuit. DETAILED DESCRIPTION

[0021] The embodiments of the present application will be described in detail below with reference to the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the embodiments of the present application, and should not be understood as limiting the present application.

[0022] In the description of the embodiments of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only intended to facilitate the description of the embodiments of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0023] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and should not be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0024] In the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0025] In one embodiment of the present application, as shown in Figure 1 A lamp control circuit with EMC function is provided, which comprises a master control circuit 100, a drive circuit 200, a power supply circuit 300 and an anti-interference circuit 400.

[0026] The master control circuit 100 comprises a master control chip U4. In this embodiment, the model of the master control chip U4 is preferably DLT8S04A, or other chips of the same type. In this embodiment, the lamp control circuit further comprises a touch switch S1, the touch switch S1 is connected to the first pin of the master control chip U4, and the touch switch S1 is used to control the master control chip U4 by touching to adjust the output of the driving circuit 200.

[0027] The driving circuit 200 is connected to the master control chip U4. The driving circuit 200 comprises a driving chip U3, the fifteenth pin of the driving chip U3 is connected to the power supply circuit 300, the second pin of the driving chip U3 is connected to the eighth pin of the master control chip U4, the seventh pin of the driving chip U3 is connected to the third pin of the master control chip U4, and the third pin of the driving chip U3 is connected to the power supply circuit 300. In this embodiment, the model of the driving chip U3 is preferably MP3398AGF, or other chips of the same type.

[0028] The power supply circuit 300 is connected to the master control chip U4 of the master control circuit 100 and the driving chip U3 of the driving circuit 200, and is used to provide power supply for the master control chip U4 and the driving chip U3. In this embodiment, the power supply circuit 300 comprises a power supply socket USB1 and a voltage stabilizing chip U1, the power supply socket USB1 is used to connect external power supply, the second pin of the voltage stabilizing chip U1 is connected to the power supply socket USB1, and the third pin of the voltage stabilizing chip U1 is connected to the master control chip U4 and the driving chip U3. In this embodiment, the power supply socket is a Type-C female socket. The model of the voltage stabilizing chip U1 is preferably ME6208A, or other chips of the same type.

[0029] The input end of the anti-interference circuit 400 is connected to the driving circuit 200, and the output end of the anti-interference circuit 400 is used to connect the lamp. The anti-interference circuit 200 comprises a common mode inductor L2 and a filter capacitor C13. The first end and the second end of the common mode inductor L2 are connected to the driving chip U3, and the third end and the fourth end of the common mode inductor L2 are used to connect external lamps. The two ends of the filter capacitor C13 are respectively connected to the third end and the fourth end of the common mode inductor L2. In this embodiment, the anti-interference circuit 400 further comprises a first resistor R2 and a second resistor R3, the two ends of the first resistor R2 are respectively connected to the first end and the third end of the common mode inductor L2, and the two ends of the second resistor R3 are respectively connected to the second end and the fourth end of the common mode inductor L2.

[0030] In one embodiment, the lamp control circuit with EMC function further comprises an indicator circuit 500, and the indicator circuit 500 is connected to the third pin of the voltage stabilizing chip U1.

[0031] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A luminaire control circuit with EMC functionality, characterized in that, The anti-interference circuit comprises a common mode inductor and a filter capacitor; the first end and the second end of the common mode inductor are connected to the driving chip; the third end and the fourth end of the common mode inductor are used for connecting external lamps; and the two ends of the filter capacitor are respectively connected to the third end and the fourth end of the common mode inductor.

2. The lamp control circuit having an EMC function according to claim 1, characterized in that The anti-interference circuit further comprises a first resistor and a second resistor; the two ends of the first resistor are respectively connected to the first end and the third end of the common mode inductor; and the two ends of the second resistor are respectively connected to the second end and the fourth end of the common mode inductor.

3. The lamp control circuit with EMC function according to claim 2, characterized in that The model of the driving chip is MP3398AGF.

4. The lamp control circuit having an EMC function according to claim 3, characterized in that The power supply circuit comprises a power supply socket and a voltage stabilizing chip; the power supply socket is used for connecting external power supply; the second pin of the voltage stabilizing chip is connected to the power supply socket; and the third pin of the voltage stabilizing chip is connected to the main control chip and the driving circuit.

5. The lamp control circuit having an EMC function according to claim 2, characterized in that, The power supply socket is a Type-C female socket.

6. A lamp control circuit with EMC function according to any of claims 1-5, characterized in that, The circuit further comprises an indicating lamp circuit; and the indicating lamp circuit is connected to the third pin of the voltage stabilizing chip.

7. The lamp control circuit with EMC function according to claim 6, characterized in that The circuit further comprises a touch switch; and the touch switch is connected to the first pin of the main control chip.

8. The lamp control circuit with EMC function according to claim 6, characterized in that, The model of the main control chip is DLT8S04A.

9. The lamp control circuit according to any one of claims 1 to 5, wherein ​ 10. The lamp control circuit according to any one of claims 1 to 5, wherein ​

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