CN204316840U - Direct current thumb lamp controller - Google Patents

Abstract

The utility model discloses a kind of direct current thumb lamp controller, comprise, governor circuit, there is a control chip and a memory, this memory writes corresponding program by the mode of burning program, this control chip can read the program in this memory, and controls button to export a data-signal in response to one; Drive circuit, is made up of the cascade of polylith LED drive chip, and described LED drive chip comprises RGB output pin, signal input pin, signal output pin, and this memory and governor circuit are together packaged in shell.The utility model have employed the design of built-in storage chip, reaches the object of waterproof; In addition, adopt special LED drive chip to drive RGB tri coloured lantern, greatly simplify line construction, reduce cost, enhance control effects.

Description

DC Thumb Light Controller

technical field

The utility model belongs to the field of LED lamp control and relates to a DC thumb lamp controller.

Background technique

At present, there is a plug-in type LED controller on the market, which has an SD card slot on its shell. As long as the SD card with the program is inserted into the SD card slot, the single-chip microcomputer chip inside the controller can read the SD card. The internal program, and under the trigger of the external button, realizes the function of switching the lighting mode of the LED light.

However, due to the possibility of water ingress in the SD card slot, certain sealing measures need to be taken, which complicates the structural design at the SD card slot, and the commonly used sealing structures have a short service life. After inserting and removing the SD card for many times, the sealing performance will decrease, and the waterproof effect cannot be achieved in the true sense.

In addition, in order to realize the switching of different colors, the current LED lights are generally equipped with three colors of LED lights (RGB) in the same lampshade, and various colors can be displayed according to different combinations of the lights of the three colors. It is formed by connecting many lampshades with wires. However, the products on the market currently control the LED lights in each lampshade independently by the controller, which makes the circuit structure complicated and the wires required are longer. The resulting cost is relatively high. Moreover, such a method cannot keep pace with the times in terms of the realization of the control effect and meet the current needs.

Therefore, it is necessary to propose a new solution to the above problems.

Utility model content

Aiming at the deficiencies of the existing technology, the purpose of this utility model is to provide a DC thumb lamp controller, which adopts the design of built-in memory chip and achieves the purpose of waterproofing; in addition, it uses a special LED driver chip to drive RGB three-color The lamp greatly simplifies the circuit structure, reduces the cost and enhances the control effect.

In order to achieve the above purpose, the utility model provides the following technical solutions: a DC thumb lamp controller, including a main control circuit, a control chip and a memory, the memory is written into the corresponding program by means of program burning, The control chip can read the program in the memory, and output a data signal in response to a control button; the driving circuit is composed of a plurality of LED driving chips cascaded, and the LED driving chip includes RGB output pins and signal input pins . Signal output pins, wherein the RGB output pins are respectively coupled to the RGB three-color lights, the signal input pins of the first LED driver chip are coupled to the data signal, and the signal input pins of the other LED driver chips are sequentially coupled to the upper The signal output pin of the first-level LED driver chip; the driver circuit responds to the data signal to control the working state of the RGB three-color lamp; the memory and the main control circuit are packaged in the shell together.

Further, the control chip is a single-chip microcomputer.

Further, the LED driver chip is a three-channel LED constant current driver chip.

Further, the DC thumb light controller is provided with a stable DC power by a power adapter.

Compared with the prior art, the utility model has the advantages of:

By building the programmable memory chip in the casing, the waterproof defect of the SD card slot in the prior art is avoided. In addition, the utility model utilizes a drive circuit composed of multiple three-channel LED constant-current drive chips to drive RGB three-color lamps, which simplifies the circuit structure and reduces costs. At the same time, the three-channel LED constant-current drive chip By controlling the RGB three-color lights separately through the RGB output pins, it is possible to individually control the on and off of one color LED light, which is more reasonable in the control method, so as to meet the needs of the current market.

Description of drawings

Fig. 1 is the control schematic diagram of the utility model embodiment;

Fig. 2 is the circuit diagram of the main control circuit of the utility model embodiment;

Fig. 3 is the circuit diagram of the drive circuit of the utility model embodiment;

Fig. 4 is a structural diagram of the entire light string in the embodiment of the utility model.

Drawings: 100, control circuit, 110, memory, 120, control chip, 200, driving circuit, 300, shell, 400, lampshade, IC1～ICn, LED driver chip, R, G, B, three-color lamp, SW , control buttons.

Detailed ways

The embodiment of the utility model will be further described with reference to Fig. 1 to Fig. 4 .

A DC thumb lamp controller, including a main control circuit 100, has a control chip 120 and a memory 110, the memory 110 writes the corresponding program through program burning, its model is CAT25040SI-TE13, the control chip 120 The program in the memory 110 can be read, and a data signal data is output in response to a control button SW; the driving circuit 200, as shown in FIG. The driver chip includes RGB output pins (OUTR, OUTG, OUTB), signal input pins DI, and signal output pins DO. Among them, RGB output pins (OUTR, OUTG, OUTB) are respectively coupled to RGB three-color lights. The first LED driver chip The signal input pin DI of (IC1 in the figure) is coupled to the data signal data, and the signal input pins DI of the other LED driver chips (IC2~ICn) are sequentially coupled to the signal output pin DO of the upper LED driver chip ; The drive circuit 200 responds to the data signal data to achieve different controls on the RGB three-color lights; the memory 110 and the main control circuit 100 are packaged in the shell 300 together.

Therefore, in this embodiment, the memory 110 is built into the main control circuit 100 and completely enclosed in the casing 300, thereby avoiding the defect of water entering the SD card slot in the prior art. In addition, the drive circuit 200 is formed by cascading multiple LED drive chips (IC1-ICn), and it is only necessary to connect the data signal data input pin of the first LED drive chip (IC1 in the figure) to the control chip, and the rest of the LEDs The signal input pins DI of the driver chips (IC2-ICn) are all sequentially coupled to the signal output pins DO of the upper-level LED driver chip. Wiring trouble and cost problems caused by direct connection with control circuits.

In this embodiment, the control chip 120 is a single chip microcomputer. Its model is AT89C52.

The LED driver chips (IC1~ICn) are three-channel LED constant current driver chips. Its model is GW6202B. The chip adopts the single-wire return-to-zero code communication method. After the chip is powered on and reset, the signal input terminal DI receives the data signal data (24bit data) transmitted from the control chip 120, and the data signal data sent first After being extracted by the first chip (IC1), it is sent to the data latch inside the chip. The remaining data is reshaped and amplified by the internal shaping processing circuit, and then it is forwarded to the next cascaded chip through the signal output terminal DO. For the transmission of one chip, the signal is reduced by 24 bits. The chip adopts automatic shaping and forwarding technology, so that the cascade number of the chip is not limited by signal transmission, but only limited by the signal transmission speed requirements.

According to the received 24bit data, the data latch inside the chip generates driving signals with different duty ratios at the OUTR, OUTG, and OUTB terminals (controlling the on and off of the RGB three-color lights), and waits for the DI terminal to input the RESET signal. The chip sends the received data to each segment synchronously, and the chip will accept new data again after the end of the signal. After receiving the first 24bit data, it forwards the data through the DO port. Before the chip receives the RESET code, The original output of the OUTR, OUTG, and OUTB pins remains unchanged. After receiving a low-level RESET code of more than 10μs, the chip outputs the received 24bit PWM data pulse width to the OUTR, OUTG, and OUTB pins.

Therefore, only by pressing the control button SW to make the control chip 120 output different data signals, the independent control of the RGB three-color lamps in the first lampshade 400 can be realized.

In addition, it can be seen from Figure 2 that the utility model provides +5V voltage directly from a DC power supply. Electricity (220V), so that the working voltage can be obtained through an external DC power supply. The DC power source may be a battery.

Above, the functional effects described in the utility model are based on the structural design of the circuit. The main way is to build the chip carrying the program and use the above-mentioned LED driver chip to drive the RGB three-color lamp, and the program does not belong to The technical solution of the utility model, and the technical solution of the utility model is not implemented by relying on programs.

Claims (3)

1. a direct current thumb lamp controller, comprises,

Governor circuit, have a control chip and a memory, this memory writes corresponding program by the mode of burning program, and this control chip can read the program in this memory, and controls button to export a data-signal in response to one;

Drive circuit, be made up of the cascade of polylith LED drive chip, described LED drive chip comprises RGB output pin, signal input pin, signal output pin, wherein, RGB output pin couples RGB tri coloured lantern respectively, the signal input pin of first piece of LED drive chip be coupled to this data-signal, the signal input pin of all the other LED drive chip is coupled to the signal output pin of upper level LED drive chip all successively;

This drive circuit in response to data-signal with the operating state of control RGB tri coloured lantern;

This memory and governor circuit are together packaged in shell.

2. direct current thumb lamp controller according to claim 1, described control chip is single-chip microcomputer.

3. direct current thumb lamp controller according to claim 1, described LED drive chip is triple channel LED constant current driving chip.