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LED driving method

A technology of LED drive and main control unit, applied in the field of LED drive, can solve the problems of indecent, unsightly, Christmas tree entanglement, etc., and achieve the effect of saving the number of wires and beautiful appearance

Inactive Publication Date: 2009-04-08
深圳市龙岗区坪地年丰高登兴玩具彩艺厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, apply LED to a Christmas tree. Assume that a Christmas tree is decorated with 100 light balls, and each light ball is equipped with three 3-color LEDs. If you want each LED to work independently, it will , At different positions, emit light of individual colors. If the wiring method in the traditional mode is used, thousands of power cords are needed to meet the requirements. Thousands of power cords will make the entire Christmas tree densely entangled, which is neither beautiful nor Inappropriate, would not be used in practice

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Embodiment 1

[0018] Embodiment 1: Please refer to the attached figure 1 , in the present embodiment, a main control unit is provided. In the present embodiment, the main control unit selects a single-chip microcomputer system, and the single-chip microcomputer can select a high-speed single-chip microcomputer chip (the high-speed single-chip microcomputer described in this embodiment is not how much the main frequency should reach, and generally adopts the market Single-chip microcomputer chips sold can be used, and the main frequency is crossed, and the effect that can be completed is better), the connection mode of the single-chip microcomputer and peripheral components is selected from the connection mode commonly used by those skilled in the art in the prior art, and the main control unit is connected with one or more sub-control unit, in this embodiment, the sub-control unit also selects the single-chip microcomputer system. All sub-control units are connected, and the data end of eac...

Embodiment 2

[0021] Embodiment two: Please refer to the attached figure 2 , in this embodiment, there is also a main control unit and a plurality of sub-control units, and only one data signal line is connected between the main control unit and the sub-control units. The sub-control units form a lamp ball chain, and multiple lamp ball chains are connected in series.

[0022] In this embodiment, similar to Embodiment 1, the LED patterns that want to be changed are also set up as a gallery in advance (the gallery includes pictures of patterns composed of different shining LEDs one by one) and then the gallery is converted into a corresponding The data of the LED on or off is stored in the memory of the main control unit. A data package corresponds to a picture, and each picture is compiled according to the actual number of sub-control units needed: assuming 100 sub-control units Taking the control unit as an example, the pre-sent data package of the main control terminal includes: each pic...

Embodiment 3

[0024] Embodiment three: Please refer to the attached image 3 , in this embodiment, there is also a main control unit and a plurality of sub-control units, and a plurality of sub-control units form a light ball chain, and the connection mode of each sub-control unit in each light ball chain is the same as that in the second embodiment , the main control unit and a sub-control unit in the light ball chain are correspondingly equipped with a wireless communication module, and the wireless communication module is respectively connected to the data end of the single-chip microcomputer in the main control unit and the sub-control unit equipped with a wireless communication module. In the example, the wireless communication module is used to realize the data transmission between the main control unit and each light ball chain, and the sub-control units in each light ball chain are connected by wire, the connection method is the same as that in the second embodiment, one main control...

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Abstract

The invention discloses an LED drive method which can greatly reduce the quantity of lines between an LED and a power supply. The method comprises the steps as follows: the invention is provided with a main control unit, one or more than one sub-control unit and one or more than one LED. The main control unit sends a control signal to the sub-control units in a wired or wireless way. Each sub-control unit is connected with one or more than one LED. The sub-control units control the LEDs to be lightened or quenched. A power supply wire supplies power to the main control unit and the sub-control units respectively. The invention can drive a plurality of LEDs to be lightened or quenched and the like by two, three or four conductors, thereby not only saving the quantity of the conductors greatly but also ensuring that the appearance of a product applied with a plurality of LEDs is more beautiful; and the invention can drive mass LEDs at the same time and provides the possibility of maximization that the LED is used as a decorative product. When the power supply is supplied enough, the invention can assemble the LEDs and arrange the butt joints of the assembly at will until the requirements are satisfied.

Description

technical field [0001] The invention discloses an LED driving method, in particular an LED driving method capable of greatly reducing the number of connections between the LED and a power supply. Background technique [0002] LED (ie light emitting diode) has been more and more widely used in people's daily life due to its advantages of high brightness, power saving and energy saving. Common sense well known to those skilled in the art, that is, LED lighting needs to meet three conditions: 1. The polarity between the LED and the power supply must be connected correctly; 2. The driving voltage of the LED must reach 1.7V (red LED) or 3.0V ( Blue, green, white or other color LEDs); 3. The current is between 3mA and 20mA, and the above three conditions are indispensable. When more than two LEDs emit light at the same time, the existing connection methods are nothing more than two methods, one is series connection, the other is parallel connection, and series connection is adopt...

Claims

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Application Information

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IPC IPC(8): H05B37/02F21V23/00F21Y101/02F21Y115/10
Inventor 林舜章
Owner 深圳市龙岗区坪地年丰高登兴玩具彩艺厂
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