KR100825480B1 - Control device and method of led module for advertised sign board - Google Patents

Abstract

An LED(Light Emitting Diode) module control device and method for sign advertisement are provided to control various colors of light and brightness by using an LED module and to simplify installation work by controlling communication between micro control units by communication signal lines less than two and connecting the LED module by common control lines less than two. An LED module control device for sign advertisement is composed of an input signal unit(100) receiving address and pattern modes or a signal for controlling one or more LED modules selected from a temperature compensating LED module group; at least one micro control unit(110) controlling a program of at least one LED module by a signal input to the input signal unit; a switching circuit unit(120) for transmitting a control signal output from the micro control unit to the LED module; and a communication control unit(130) controlling a communication signal between the micro control units more than two.

Description

Light emitting diode module control device and control method for sign advertising {Control device and method of LED module for advertised Sign Board}

1 is a block diagram of a light emitting diode module control apparatus according to an embodiment of the present invention.

2 is a flowchart illustrating a method of controlling a light emitting diode module according to an embodiment of the present invention.

3 is a flowchart illustrating a program of a microcontroller according to an exemplary embodiment of the present invention.

4 is a graph showing compensation of light output by a change in duty ratio with respect to a light emitting diode operating current according to an embodiment of the present invention;

FIG. 5A is a time chart illustrating a 1-mode light emitting diode module lighting operation for 16 microcontrollers according to another exemplary embodiment of the present disclosure. FIG.

5B is a time chart illustrating a 5-mode light emitting diode module lighting operation for 16 microcontrollers according to another exemplary embodiment of the present invention.

6A and 6B illustrate neon sign advertisement boards of twenty four light emitting diode module bars according to another embodiment of the present invention.

 <Description of the symbols for the main parts of the drawings>

100: input signal unit 102: temperature compensation input unit

110: micro control unit 104: address and pattern mode input unit

120: switching circuit unit 130: intercommunication control unit

400: Lighting state 410: Light color variable operation

600: advertising board 610: light emitting diode module bar

620: light emitting diode module 630: light emitting diode module control device

640: external support and fixing part 650: lens part

t: lighting time

The present invention uses one microcontroller for each light emitting diode module, and controls the mutual communication of each microcontroller using two or less mutual communication control lines, and controls the operating current of the light emitting diode module according to the ambient temperature. The present invention relates to a light emitting diode module control device and control method for sign advertising to control the duty ratio to prevent light output degradation.

In general, when using a light emitting diode module composed of light emitting diodes having various light colors such as red, blue, green, white, and the like, for controlling signs of various light colors and lighting patterns, advertisement, and landscape lighting, a plurality of light emitting diode modules may be used by a user. In order to satisfy the required operation, a special and complicated integrated control device is manufactured and directly connected to the light emitting diode module to send an operation signal to each light emitting diode module, so that the pattern control can be performed by sign advertising lighting.

However, the one integrated control device requires two or more control signal lines to send a control signal command to each light emitting diode module, and the control signal lines increase in proportion to the number of operations of the light emitting diode modules used, respectively. Since the control signal line of must be installed correctly to match the operation address of the corresponding light emitting diode module, the installation of the operator is difficult and the installation cost increases.

In addition, the integrated control device is vulnerable to an increase in the light emitting diode module and a change in user requirements, and thus, there is a problem of relying on initial order production.

An object of the present invention is to configure a low-cost and simplified microcontrol unit in each light emitting diode module in order to solve the problems of the prior art as described above, the user sets the address and operation pattern control and the two or less intercommunication control lines Is connected to each light emitting diode module in parallel to enable mutual communication, and provides a light emitting diode module control device and control method for sign advertising that prevents the light output of the light emitting diode module from deteriorating when the light emitting diode module operates at a low temperature. It's there.

In the sign advertising LED module control device and control method of the present invention in order to achieve the above object, each microcontroller using a microcontroller for each of the light emitting diode modules, each using two or less mutual communication control lines Control the mutual communication of the control unit, and control the operating current of the light emitting diode module at the duty ratio according to the ambient temperature to prevent the light output degradation.

The light emitting diode module control apparatus according to the present invention for achieving the above object comprises an input signal portion to which a signal for controlling the light emitting diode module, such as address, pattern mode or temperature compensation is input, by the signal input to the input signal portion At least one microcontroller for controlling the program of the at least one light emitting diode module, respectively. And a switching circuit unit for transmitting a control signal output from the microcontroller to each of the light emitting diode modules, and preferably including an intercommunication control unit controlling an intercommunication signal between two or more microcontroller units. .

According to another aspect of the present invention, there is provided a method of controlling a light emitting diode module, wherein a signal for controlling a light emitting diode module, such as an address, a pattern mode, or a temperature compensation, is transmitted to a microcontroller. Is controlled by a program of the microcontroller, and the controlled signal preferably includes adjusting the light color and brightness of each LED module through a switching circuit.

Lighting system using a light emitting diode module according to the present invention for achieving the above object comprises a light emitting diode module consisting of a plurality of light emitting diodes representing a variety of light colors, and controls the temperature compensation, pattern mode and light color variation of the light emitting diode module It includes a light emitting diode module control device, and located on the upper portion of the light emitting diode module, it is preferable to include a lens unit having a transparent and diffusion material.

The program for controlling the light emitting diode module according to the present invention for achieving the above object comprises the step of setting the program basic time period of the microcontroller by a timer and a counter inside the microprocessor, the light emitting diode according to the basic time period The operations include synchronizing, preferably including a program for executing the steps of the flashing and photochromic operation of the synchronized light emitting diodes.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. In adding reference numerals to components of the following drawings, it is determined that the same components have the same reference numerals as much as possible even if displayed on different drawings, and it is determined that they may unnecessarily obscure the subject matter of the present invention. Detailed descriptions of well-known functions and configurations will be omitted.

1 is a block diagram of a light emitting diode module control apparatus according to an embodiment of the present invention.

Referring to FIG. 1, an input signal unit 100, a microcontrol unit 110, a switching circuit unit 120, and an intercommunication control unit 130 are included.

 The input signal unit 100 receives a signal for controlling the LED module such as an address, a pattern mode, or a temperature compensation. The input signal unit 100 includes a negative temperature coefficient and a switching element.

When the ambient temperature decreases, the resistance value of the negative characteristic thermistor increases, and the switching element becomes conductive as the base voltage of the switching element Q4 increases.

Accordingly, the input signal voltage of the microcontroller 110 becomes a zero voltage, so that a duty ratio change occurs in the light emitting diode module for temperature compensation, and the temperature compensation is performed by adjusting the negative characteristics thermistors and resistors R20 and R8. You can set the temperature for

The temperature compensation input unit 102 to which the temperature compensation signal is input is turned on / off by one of the microcontroller 110 by turning on / off the switching element according to an ambient temperature set by using the voltage distribution principle of the negative characteristic thermistor and the resistor. By applying a hight / low signal to the pin, the microcontroller program adjusts the light output to achieve a ± 10% change in light output based on ambient temperature.

The microcontroller 110 program is referred to FIG. 3 below, and the light output adjustment by the temperature compensation input unit 102 is referred to FIG. 4 below.

In addition, the address and pattern mode input unit 104 to which the address and the pattern mode signal are input includes an address input selection switch and a sign advertisement mode input selection switch connected to the pins of the microcontroller.

The address input selection switch is sufficiently configured to control the number of light emitting diode modules, and selects an input signal as Hight / Low to be identical to the address of each of the microcontrollers 110 to the microcontroller 110. Supply.

The sign advertisement mode input selection switch is also set appropriately for the corresponding mode in the same manner as the address input selection switch.

The microcontroller 110 is formed of a one-chip, and controls each of the one or more light emitting diode modules input by the input signal unit 100.

In addition, having two or more input / output ports, 16-bit timers and counters, various program control is possible, and a relatively small number of control circuit elements are required, so that it can be used in a limited area.

The light emitting diode module comprises a light emitting diode of various colors such as blue, green, white, etc. in any one form selected from the group consisting of a planar shape, a linear shape, and a circular shape.

The switching circuit unit 120 is a part for adjusting the voltage and current of the light emitting diode, which is the most important part for controlling the characteristics of the light emitting diode, and is connected to various light emitting diodes combined in series and parallel.

The switching circuit unit 120 adjusts the voltage and current of the light emitting diode by using a switching transistor therein. The switching circuit 120 is designed to operate in a saturation region, so that the switching circuit unit 120 controls the current of the switching output signal of the microcontroller 110. Make it unaffected.

In addition, the current is controlled by using a resistor so that each light emitting diode may operate at a rated current, and the pulse width control (PWM) switching signal output from the microcontroller 110 is received to provide red, green, blue, Adjust the brightness of the light emitting diode of the light color selected from the group consisting of white, yellow and a combination thereof.

The intercommunication control unit 130 inputs and outputs two or less intercommunication control lines in the microcontroller 110 to enable a sign advertisement operation by intercommunication between the microcontrollers 110.

One of the intercommunication control lines transmits a signal in which a communication signal relating to an operation sequence according to an address of each light emitting diode module is interchanged. The other one transmits a signal in which communication signals relating to a start point and an end point of the pattern control and sign advertisement mode operation of the light emitting diode module are interchanged.

2 is a flowchart illustrating a method of controlling a light emitting diode module according to an embodiment of the present invention.

In step S200, a signal for controlling the light emitting diode module is transferred to the microcontroller, and an address signal, a pattern mode signal, or a temperature compensation signal is input to the microcontroller through an input signal.

In the controlling of the signal by the program of the microcontroller (S210), the microcontroller uses a timer or a counter in the microcontroller in consideration of the minimum blink period, duty ratio time, lighting time and delay time of each LED module. A program cycle is set to control the input signal.

In the step of adjusting the light color and brightness of each light emitting diode module through the switching circuit unit (S220), the intercommunication signal generated from the intercommunication control unit connected to the microcontroller is connected to the light color of each light emitting diode module through the intercommunication control line. Adjust the brightness.

The intercommunication signal includes a signal for controlling an operation sequence according to an address of each light emitting diode module, a signal for controlling patterns such as blinking and variable color of each light emitting diode module, and controlling start and end points of a sign advertisement mode operation. Contains a signal.

In addition, the switching circuit unit sequentially changes the light color of each light emitting diode module, and performs temperature compensation by minimizing the light output change according to the change of ambient temperature.

The temperature compensation achieves temperature compensation using a duty ratio with respect to the operating current in the flashing operation and the variable color operation according to the input of the temperature compensation signal of the input signal unit. In addition, the duty ratio is set to a maximum of 90% and 100% in the light color variable operation, the resolution of the duty ratio is changed to 256 steps or more to display a light color of 16.7 million colors or more.

3 is a flowchart illustrating a program of a microcontroller according to an exemplary embodiment of the present invention.

 Referring to FIG. 3, in the step of setting an internal timer interrupt (S300), a basic time period of a program of a microcontroller is set by a timer and a counter inside the microprocessor. At this time, the minimum blink period, duty ratio time, lighting time, delay time, etc. of the light emitting diodes are considered.

In the step of initializing / synchronizing the LED operation (S310), a function for initializing the operation of the LED is set to synchronize the start point and the end point of the LED blink and the photochromic operation. .

Then, a time delay function [Delay ()] for exchanging the light emitting diode operating signals is set to synchronize the operating time of each light emitting diode module.

In the adjusting of the LED blinking operation S320, the blinking of the light emitting diode is controlled by using the LED blinking operation function LED_ONOFF0 ().

In the step of adjusting the light emitting diode (LED) light color variable operation (S330), the light color variable operation order [LED_chang ()] is used to determine the light color variable operation order, and the light color conversion performing functions [LED_A (), LED_B () C] are used. The light color of the light emitting diodes is blue (B) → white (RGB) → yellow (RG) → green (G) → white (RGB) → purple (BR) → red (R) → white (RGB). → cyan (BG) → blue (B).

As such, the light color conversion performing function may change the order of light colors in various ways.

By constructing the entire main function using the blinking operation function and the variable color operation function of the light emitting diode (S350), the neon sign pattern may be executed.

That is, Table 1 below shows an exemplary operation state of each control mode of the controller 300.

4 is a graph illustrating compensation of light output by a change in duty ratio with respect to a light emitting diode operating current according to an exemplary embodiment of the present invention.

Referring to FIG. 4, when the reference temperature is higher than -15 ° C, it operates at a duty rate of 90% or less of the operating current, and when the temperature is lower than the existing temperature of -15 ° C, it is operated at a 100% duty ratio of the operating current to achieve temperature compensation. This prevents the light output from dropping.

The reference temperature may be directly designated by the user.

FIG. 5A is a time chart illustrating one mode light emitting diode module lighting operation for sixteen microcontrollers according to another exemplary embodiment.

Referring to FIG. 5A, operations of 16 light emitting diode modules are controlled using 16 microcontrollers. According to the address order of each light emitting diode module set in the microcontroller, the lighting time is sequentially blinked at intervals (t).

That is, after the first light emitting diode is turned on, after the lighting time t, the first light emitting diode blinks, and the second light emitting diode is turned on. After the lighting time t, the second light emitting diode is flickered so that the third light emitting diode is turned on.

In this way, a total of 16 light emitting diode modules go through a lighting and blinking state to form a cycle. At this time, the lighting time is defined by the user.

In addition, the address forms a cycle from the light emitting diode module 1 to the light emitting diode module 16, and when one period of flashing operation is completed, the light color is converted and the light emitting operation from the light emitting diode module 1 to the light emitting diode module 16 is performed again. Is done.

5B is a time chart illustrating a 5 mode LED module lighting operation for 16 microcontroller according to another exemplary embodiment of the present invention.

Referring to FIG. 5B, the sixteen light emitting diode modules are controlled by using sixteen microcontrollers. The odd-numbered light emitting diode module of the light emitting diode module having the address signal of the light emitting diode module from 1 to 16 is variable in color for the lighting time t, and the even-numbered light emitting diode module is then turned on for the lighting time t. Repeat operation of variable color.

6A and 6B are diagrams illustrating neon sign advertising boards of 24 LED modules according to another exemplary embodiment of the present invention.

6A and 6B, the advertisement board includes a plurality of light emitting diode module bars therein, and the light emitting diode module bars have a light emitting diode module, a light emitting diode module control device, an external support and a fixing part, and a lens part therein. Include.

The light emitting diode module includes a plurality of light emitting diodes representing various light colors such as blue, green, red, and white.

The light emitting diode module controller is located under the light emitting diode module and controls temperature compensation, pattern mode, and light color variation of the light emitting diode module.

The external supporter and the fixing unit mount the light emitting diode module on a neon sign board, and are positioned below the lens unit to fix the light emitting diode module.

The lens unit is positioned to surround the light emitting diode module and the light emitting diode module control device, and is formed of a transparent and diffusing material according to a purpose of use.

The light emitting diode module bars may be positioned in various ways such as horizontally and vertically to control various light colors and lighting patterns than conventional neon signs.

As described above, it has been described with reference to a preferred embodiment of the present invention, but those skilled in the art various modifications and changes of the present invention without departing from the spirit and scope of the invention described in the claims below I can understand that you can.

As described above, according to the present invention, by using each of the simplified microcontrollers for each light emitting diode module, the cost of product production is reduced and the work process is simplified, thereby enabling mass production.

In addition, there is an effect of controlling various light colors and brightness using the light emitting diode module, and controlling the lighting pattern of the light emitting diode module.

In addition, two or less mutual communication control lines are used to control the mutual communication of each microcontrol unit, and by connecting two common control lines in parallel to the microcontrol unit, that is, the light emitting diode module, installation is simple and installation cost is reduced. There is an effect that becomes cheaper.

In addition, by adjusting the light output of the light emitting diode according to the ambient temperature, there is an effect of reducing the change in light output to 10% or less.

Claims (24)

An input signal unit to which a signal for controlling one or more light emitting diode modules selected from the group of light emitting diode modules of address, pattern mode or temperature compensation is input; At least one microcontroller for controlling a program of at least one light emitting diode module according to a signal input to the input signal unit; A switching circuit unit transferring a control signal output from the microcontroller to each of the light emitting diode modules; And Light emitting diode module control device for sign advertising, characterized in that it comprises an intercommunication control unit for controlling the intercommunication signal between two or more of the microcontroller. The apparatus of claim 1, wherein the input signal unit comprises a negative characteristic thermistor (NTC) and a switching element. The apparatus of claim 2, wherein the switching device is operated according to a change in resistance value of the sub-thermistor according to ambient temperature. 2. The LED advertising module control of claim 1, wherein the input signal unit comprises an address and pattern mode input unit having an address input selection switch and a sign advertisement mode input selection switch connected to the pins of the microcontrol unit. Device. The apparatus of claim 1, wherein the light emitting diode module comprises one of a variety of light emitting diodes selected from a group consisting of a planar shape, a linear shape, and a circular shape. The apparatus of claim 1, wherein the one or more microcontrollers are formed as one-chips to control each LED module. The apparatus of claim 1, wherein the microcontroller includes at least two input / output ports, a 16-bit timer, and a 16-bit counter. The apparatus of claim 1, wherein the switching circuit unit is connected to various light emitting diodes combined in series. The apparatus of claim 1, wherein the switching circuit unit comprises a switching transistor that operates in a saturation region. The light emitting diode of claim 1, wherein the switching circuit receives the pulse width control switching signal output from the microcontroller and is selected from a group consisting of red, green, blue, white, yellow, and a combination thereof. Light emitting diode module control device for sign advertising, characterized in that for adjusting the. The apparatus of claim 1, wherein the intercommunication control unit comprises an intercommunication control line connected to two or less pins in the microcontroller to transmit an intercommunication signal. 12. The apparatus of claim 11, wherein the mutual communication control lines exchange communication signals relating to an operation sequence according to an address of each LED module. 12. The apparatus of claim 11, wherein the mutual communication control line exchanges communication signals relating to a start point and an end point of pattern control and a sign advertisement mode operation of each light emitting diode module. Transmitting a signal for controlling the LED module, such as an address, a pattern mode, or a temperature compensation unit, to the microcontroller; Controlling a signal for controlling the light emitting diode by a program of the microcontroller; And And controlling the light color and brightness of each light emitting diode module through the controlled signal. 15. The method of claim 14, wherein the light color and brightness of each light emitting diode module is controlled by transmitting an intercommunication signal by an intercommunication control unit connected to the microcontroller. 16. The method of claim 15, wherein the mutual communication signal is a signal relating to an operation sequence according to an address of each light emitting diode module. 16. The method of claim 15, wherein the mutual communication signal is a signal relating to a start point and an end point of pattern control and sign advertisement mode operation of each light emitting diode module. 15. The method of claim 14, wherein the adjusting the light color and brightness of each light emitting diode module through the switching circuit unit sequentially converts the light color of the light emitting diodes. 15. The method of claim 14, wherein adjusting the light color and brightness of each light emitting diode module through a switching circuit unit comprises temperature compensation for minimizing light output change due to temperature change. 20. The method of claim 19, wherein the temperature compensation is operated according to a duty ratio for each light emitting diode operating current. A light emitting diode module including a plurality of light emitting diodes showing various light colors; A light emitting diode module controller for controlling temperature compensation, pattern mode, and light color variation of the light emitting diode module; Located in the upper portion of the light emitting diode module, the lighting device of the light emitting diode, characterized in that it comprises a lens portion having a transparent and diffused material. Setting a program basic time period of the microcontroller by a timer and a counter inside the microprocessor; Synchronizing a light emitting diode operation according to the basic time period; And A light emitting diode module control program recording medium having recorded thereon a program for executing a step in which the synchronized light emitting diodes blink and light color. 23. The recording medium of claim 22, wherein the synchronizing step includes a program for synchronizing the start point and the end point of the light emitting diode flickering and photochromic operation. 23. The recording medium of claim 22, wherein the synchronizing step includes a time delay function program for exchanging the light emitting diode operation signals.

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