CN219248128U

CN219248128U - Soft start circuit for controlling power ramp-up

Info

Publication number: CN219248128U
Application number: CN202223183262.5U
Authority: CN
Inventors: 刘庆华; 李永康; 周洪亮; 张二磊
Original assignee: Zhengzhou Inledco Lighting Co ltd
Current assignee: Zhengzhou Inledco Lighting Co ltd
Priority date: 2022-11-24
Filing date: 2022-11-24
Publication date: 2023-06-23
Anticipated expiration: 2032-11-24

Abstract

The utility model relates to a soft start circuit for controlling power ramp-up, which comprises an input connector, an output connector, an amplifying follower circuit, a voltage dividing circuit, a processing circuit and a PWM-to-0-10V dimming circuit, wherein the input connector is positioned at an input end and used for receiving a 10V PWM signal or a 0-10V voltage signal; the input connector is connected with the output connector through the amplifying follower circuit, the voltage dividing circuit, the processing circuit and the PWM-to-0-10V dimming circuit in sequence. The soft start circuit for controlling the power to slowly rise can uniformly convert a 10V PWM or 0-10V voltage instantaneous constant voltage dimming signal into a 0-10V slowly rising dimming signal, so that the slow rise of the power when the lamp body driver is started is realized, the soft start of the lamp body is further realized, and the service lives of the lamp body and the driver are prolonged.

Description

Soft start circuit for controlling power ramp-up

Technical Field

The utility model relates to the technical field of electronic circuits and control, in particular to a soft start circuit for controlling power ramp-up.

Background

The existing dimming driver immediately executes hard start after receiving the control signal, and the start mode can lead to the driver and the lamp body to be impacted by stronger current instantaneously, so that the loss is accelerated, and the service lives of the driver and the lamp body luminous component are shortened.

Disclosure of Invention

The utility model aims to solve the technical problems that: the soft start circuit for controlling the power ramp up is provided, which can uniformly convert 10V PWM or 0-10V voltage instantaneous constant voltage dimming signals into 0-10V slowly-rising dimming signals, so that the slow power ramp up of the lamp body driver during starting is realized, the soft start of the lamp body is realized, and the service lives of the lamp body and the driver are prolonged.

The soft start circuit for controlling the power ramp-up comprises an input connector, an output connector, an amplifying follower circuit, a voltage dividing circuit, a processing circuit and a PWM-to-0-10V dimming circuit, wherein the input connector is positioned at an input end and used for receiving a 10V PWM signal or a 0-10V voltage signal; the input connector is connected with the output connector through the amplifying follower circuit, the voltage dividing circuit, the processing circuit and the PWM-to-0-10V dimming circuit in sequence.

The soft start circuit for controlling the power ramp-up further comprises a program burning interface module and a power supply module which are connected with the processing circuit.

Further, the power supply module comprises a DC12V constant voltage output circuit and a DC12V to DC5V constant voltage conversion circuit, wherein the DC12V constant voltage output circuit is connected with a power supply end of the processing circuit through the DC12V to DC5V constant voltage conversion circuit.

Further, the processing circuit comprises a PIC16F877 singlechip.

Specifically, the input end of the PIC16F877 single-chip microcomputer is connected with the output end of the voltage dividing circuit through an RA4 pin, the output end of the PIC16F877 single-chip microcomputer is connected with the input end of the PWM-to-0-10V dimming circuit through an RA2 pin and a resistor R11d, the PIC16F877 single-chip microcomputer is connected with the program burning interface module through a VDD pin, and the PIC16F877 single-chip microcomputer is connected with the output end of the constant voltage conversion circuit for converting DC12V into DC5V through an RA0 pin group and an RA1 pin group.

The soft start circuit for controlling the power to slowly rise overcomes the defect that the lamp body and the driver have larger loss caused by the fact that the traditional dimming driver receives a control signal and then executes instant hard start, can uniformly convert a 10VPWM or 0-10V voltage instant constant voltage dimming signal into a 0-10V slowly rising dimming signal, achieves the slow rise of the power when the lamp body driver starts, further achieves the soft start of the lamp body, and prolongs the service lives of the lamp body and the driver.

Drawings

The following further describes a soft start circuit for controlling power ramp-up according to the present utility model with reference to the accompanying drawings:

FIG. 1 is a block diagram showing the logical structure connection of the soft start circuit for controlling the power ramp-up;

FIG. 2 is a circuit diagram of the amplification follower circuit-voltage divider circuit-processing circuit of the soft start circuit of the present control power ramp-up;

FIG. 3 is a circuit diagram of the PWM to 0-10V dimming circuit of the soft start circuit for controlling the power ramp-up;

FIG. 4 is a circuit diagram of the DC12V constant voltage output circuit of the soft start circuit of the present control power ramp-up;

FIG. 5 is a circuit diagram of a DC12V to DC5V constant voltage conversion circuit of the soft start circuit for controlling power ramp-up;

FIG. 6 is a circuit diagram of the programming interface module of the soft start circuit of the present control power ramp-up;

fig. 7 is a circuit diagram of the connector of the soft start circuit for controlling the power ramp-up.

In the figure:

1-input connector, 2-output connector, 3-amplification follower circuit, 4-bleeder circuit, 5-processing circuit, 6-PWM changes 0-10V dimmer circuit, 7-procedure burns interface module, 8-power module.

81-DC12V constant voltage output circuit, 82-DC12V to DC5V constant voltage conversion circuit.

Detailed Description

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present utility model, it should be understood that the terms "left", "right", "front", "rear", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The technical scheme of the present utility model will be further described by the following specific examples, but the scope of the present utility model is not limited to the following examples.

Embodiment 1: as shown in fig. 1 to 7, the soft start circuit for controlling the power ramp-up comprises an input connector 1 positioned at an input end and used for receiving a 10V PWM signal or a 0-10V voltage signal, an output connector 2 positioned at an output end and used for being connected with a lamp body drive, an amplifying follower circuit 3, a voltage dividing circuit 4, a processing circuit 5 and a PWM conversion 0-10V dimming circuit 6; the input connector 1 is connected with the output connector 2 through the amplifying follower circuit 3, the voltage dividing circuit 4, the processing circuit 5 and the PWM conversion 0-10V dimming circuit 6 in sequence.

Embodiment 2: the soft start circuit for controlling the power ramp-up further comprises a program burning interface module 7 and a power supply module 8 which are connected with the processing circuit. The power supply module 8 comprises a DC12V constant voltage output circuit 81 and a DC 12V-to-DC 5V constant voltage conversion circuit 82, wherein the DC12V constant voltage output circuit 81 is connected with a power supply end of the processing circuit through the DC 12V-to-DC 5V constant voltage conversion circuit 82. The remaining structures and components are as described in embodiment 1, and a description thereof will not be repeated.

Embodiment 3: the processing circuit 5 of the soft start circuit for controlling the power ramp-up comprises a PIC16F877 singlechip. The input end of the PIC16F877 single-chip microcomputer is connected with the output end of the voltage divider circuit 4 through an RA4 pin, the output end of the PIC16F877 single-chip microcomputer is connected with the input end of the PWM-to-0-10V dimming circuit 6 through an RA2 pin and a resistor R11d, the PIC16F877 single-chip microcomputer is connected with the program burning interface module 7 through a VDD pin, and the PIC16F877 single-chip microcomputer is connected with the output end of the constant voltage conversion circuit 82 for converting DC12V into DC5V through an RA0 pin group and an RA1 pin group. The remaining structures and components are as described in embodiment 1, and a description thereof will not be repeated.

When in operation, the method comprises the following steps: the DC12V constant voltage output circuit converts externally input AC 100-277V into DC12V constant voltage output, and the processing circuit converts the DC12V constant voltage output into DC5V through the constant voltage conversion circuit converting DC5V into DC5V to supply power to the PIC16F 877. The 10V PWM or 0-10V control signal is uniformly converted into 0-10V signal through the amplifying follower circuit, after the signal is divided by the resistor of the voltage dividing circuit, a duty ratio PWM signal with duty ratio ranging from 0 to the actual required duty ratio is output through the AD signal sampling port of the PIC16F877, and the PWM signal with the slowly rising duty ratio is slowly increased through the PWM-0-10V dimming circuit, so that the slow increase of power of the lamp body driver during starting is controlled, and soft starting is realized.

The soft start circuit for slowly rising the control power overcomes the defect that the lamp body and the driver have larger loss caused by the fact that the current dimming driver receives a control signal and then executes instantaneous hard start, can uniformly convert 10V PWM or 0-10V voltage instantaneous constant voltage dimming signals into 0-10V slowly rising dimming signals, achieves slow rising of the power when the lamp body driver starts, further achieves soft start of the lamp body, and prolongs service lives of the lamp body and the driver.

The foregoing description illustrates the major features, principles, and advantages of the utility model. It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments or examples, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The foregoing implementations or examples should be regarded as illustrative rather than limiting. The scope of the utility model is indicated by the appended claims rather than by the foregoing description, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. A soft start circuit for controlling power ramp-up is characterized in that: the light-modulating circuit comprises an input connector (1) positioned at an input end and used for receiving a 10V PWM signal or a 0-10V voltage signal, an output connector (2) positioned at an output end and used for being connected with a lamp body for driving, an amplifying follower circuit (3), a voltage dividing circuit (4), a processing circuit (5) and a PWM-to-0-10V light-modulating circuit (6); the input connector (1) is connected with the output connector (2) through the amplifying follower circuit (3), the voltage dividing circuit (4), the processing circuit (5) and the PWM-to-0-10V dimming circuit (6) in sequence.

2. The soft start circuit for controlling power ramp-up of claim 1, wherein: the device also comprises a program burning interface module (7) and a power supply module (8) which are connected with the processing circuit.

3. The soft start circuit for controlling power ramp-up of claim 2, wherein: the power supply module (8) comprises a DC12V constant voltage output circuit (81) and a DC 12V-to-DC 5V constant voltage conversion circuit (82), wherein the DC12V constant voltage output circuit (81) is connected with a power supply end of the processing circuit through the DC 12V-to-DC 5V constant voltage conversion circuit (82).

4. A soft start circuit for controlling power ramp-up as defined in claim 3, wherein: the processing circuit (5) comprises a PIC16F877 singlechip.

5. The soft start circuit for controlling power ramp-up of claim 4, wherein: the input end of the PIC16F877 single-chip microcomputer is connected with the output end of the voltage divider circuit (4) through an RA4 pin, the output end of the PIC16F877 single-chip microcomputer is connected with the input end of the PWM-to-0-10V dimming circuit (6) through an RA2 pin through a resistor R11d, the PIC16F877 single-chip microcomputer is connected with the program burning interface module (7) through a VDD pin, and the PIC16F877 single-chip microcomputer is connected with the output end of the constant voltage conversion circuit (82) for converting DC12V into DC5V through an RA0 pin group and an RA1 pin group.