KR101510438B1 - LED display device using a PLC - Google Patents

Abstract

A data input device (10) inputs data to be displayed on a master module (30) and a slave module (40) to a PLC (20). The PLC 20 receives the data to be displayed from the data input device 10 and stores the data in the memory unit 22. The central processing unit 21 of the PLC 20 is connected to each storage area of the memory unit 12, : 1 so as to correspond to each master module 30 and the slave module 40 and to control the display of character or figure data on the master LED matrix 22 and the slave LED matrix 32 so that the expansion and reduction of the module size It is possible to control the LED display device by various communication methods such as serial, CC-Link, Ethernet, and DeviceNet by various PLC devices anytime and anywhere, so that the control program can be individually configured even if the number of LED matrix modules is changed So that it is possible to produce a small quantity of LED display devices without increasing the production cost.

Description

[0001] The present invention relates to an LED display device using a LED,

The present invention relates to an LED display device using a PLC, and more particularly, to an LED display device using a master module and a slave module so that expansion or contraction can be made anytime and anywhere by adding or removing modules, The present invention relates to an LED display device using a PLC capable of controlling an LED display device in real time so that it is not necessary to separately configure a control program by storing dedicated programs for each type of PLC and programming them according to various PLCs.

In order to display characters or images on the LEDs, the LEDs are arranged in a matrix form and then used to turn on or off the LEDs by turning on or off the LEDs to be turned on or off to display characters or images .

Figure 1 shows an LED display consisting of an M row by N column matrix according to the prior art.

 In the case of an LED display composed of an M row × N column matrix by a conventional technique, the positive terminals of the LEDs 1a, which are the light emitting elements located in each row, are commonly connected to one common source line 2, The cathode terminal of the LED is commonly connected to the current line 3 of the column. The current line 3 is connectable to the constant current source 4a. Any common source line 2 of row M is sequentially turned on in a predetermined cycle and an LED drive current is supplied to any current line 3 in the N columns in accordance with the image data corresponding to the ON line. As a result, an LED driving current corresponding to the image data is applied to the LED 1a of each pixel to display an image.

In the case of a large-sized LED display such as an outdoor unit, it is possible to relatively easily form an arbitrary shape and size. Therefore, in general, a plurality of LED units are combined, Each part is displayed. In the LED unit, light emitting diodes each having one set of RGB are arranged in a dot matrix form on a substrate, and each unit performs the same operation as the above-described LED display. A large LED display having a large size uses a large number of LEDs. For example, in the case of a vertical 300 × horizontal 400, an LED corresponding to a total of 120,000 pixels is used.

A driving circuit is required to emit such an LED. The most basic method is to connect one driving circuit to one LED. In recent years, the so-called dynamic driving method, in which LEDs are sequentially driven line by line, is mainly used, but a standard has not been established in the LED module control method or signaling method.

In the conventional method, the control program stored in the main memory unit controls the blinking of the LEDs to output letters or pictures through the PC, and the horizontal / vertical number of the panels constituting the LED matrix is read, The control program loaded in the ROM of the main storage unit is loaded into the RAM of the main storage unit, the value of the horizontal / vertical number of the panel stored in the auxiliary storage unit is input to the control program loaded in the RAM, The control program is driven based on the number of panels and the data signal is transmitted to the LED drive.

The control program is pre-inputted to the main memory unit constituting the control device. The output range of the data varies depending on the number of the LED panels constituting the LED matrix when the control program is operated.

Therefore, in order to control the display of characters or images on the LED, the number of LED panels constituting the LED matrix must be determined. However, even if the LED matrix is manufactured in a standardized size LED panel unit, if the number of LED panels is changed, various control values of the control program must be changed accordingly, so that control programs are individually configured according to the number of panels In addition to the inconvenience, due to the change of the control unit part, there is a problem that the production cost is increased when a small quantity of LED electronic signboard is produced.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a data input apparatus and a data input apparatus in which a control program is controlled by a data input device in real time, And to provide an LED display device using a PLC capable of producing a small quantity of electric signboards and various kinds of products.

Another object of the present invention is to store a dedicated program capable of programming various PLCs in a data input device, to program the corresponding PLC in real time, to perform various communication methods such as serial communication, CC-LINK, Ethernet, The present invention also provides an LED display device using a PLC capable of controlling inconveniences caused by separately configuring a control program by allowing the LED display device to be controlled by the controller.

It is another object of the present invention to provide an LED display device using a PLC capable of enlarging and reducing a size at any time by adding or removing a module by configuring an LED display device as a master module and a slave module.

It is still another object of the present invention to provide an LED display device using a PLC capable of directly inputting data from a data input device to a PLC and storing and displaying the data in real time on the LED display device.

According to an aspect of the present invention, there is provided an LED display device using a PLC, comprising: a data input device for inputting data to be displayed on a master module and a slave module; A central processing unit that receives data to be displayed from the data input device and stores the received data in a memory unit and displays data stored in the memory unit on the master module and the slave module; And a PLC communication unit for transmitting data to the module and the slave module; A master LED driving control unit for controlling the master LED LED matrix to receive and display data from the PLC and the data inputted from the PLC to be displayed on the master LED matrix, and a master communication unit for receiving data from the PLC through the PLC communication unit, A master module comprising: A slave LED matrix for receiving and displaying data from the master module, and a slave LED driving controller for controlling data input from the master module to be displayed on the slave LED matrix.

According to an embodiment of the present invention, a plurality of master modules and slave modules may be connected to each other so as to display various characters or pictures, and a plurality of master modules may be connected or a plurality of slave modules may be connected Are connected to each other.

According to an embodiment of the present invention, the data input device is a personal PC or a notebook PC, and is provided with a dedicated program suitable for a PLC model, and a software program suitable for the model of the PLC is created and input to the PLC.

According to an embodiment of the present invention, the data input device includes an input unit for receiving data to be displayed on the master module and the slave module from a user; A display unit for displaying data inputted from the input unit and allowing the user to confirm the data; A memory unit for storing a dedicated program for each model of each PLC used for programming various PLCs; A PLC program means for reading and programming a dedicated program suitable for the PLC in the memory to display data inputted from the input unit on the master module and the slave module; And a central control unit for controlling the data input from the input unit to be programmed with a dedicated program suitable for the PLC.

According to an embodiment of the present invention, the central control unit of the data input device displays data inputted from the input unit on the display unit, receives and displays the LED display area formed by the master module and the slave module from the PLC, And the data input through the master module and the slave module are allocated to be displayed on the master module and the slave module.

According to an embodiment of the present invention, the display unit displays data input from the input unit under the control of the central control unit, and receives and displays the LED display area formed by the master module and the slave module from the PLC .

According to an embodiment of the present invention, the PLC communication unit of the PLC and the master communication unit of the master module communicate with each other through serial communication, CC-LINK, Ethernet, and DeviceNet.

According to the present invention, the LED display device is composed of a master module and a slave module, which are composed of an LED matrix, so that expansion and reduction of size can be performed anytime and anywhere by adding and removing modules, And it is possible to control the LED display device by the program suitable for the corresponding PLC so that it is not necessary to individually configure the control program even if the number of LED matrix modules is changed, It is possible to make a small quantity of the apparatus, and to produce various kinds of products.

1 shows an LED display comprising an M row by N column matrix according to the prior art,
FIG. 2A is a block diagram showing an embodiment in which an LED display device according to the present invention is constructed by connecting one master module and a plurality of slave modules. FIG.
FIG. 2B is a block diagram showing an embodiment in which the LED display device according to the present invention is constructed by connecting a plurality of master modules,
2C is a block diagram showing an embodiment in which an LED display device according to the present invention is constructed by connecting a plurality of master modules and a plurality of slave modules,
3 is a block diagram showing the configuration of an embodiment of the data input device according to the present invention.
Fig. 4A is an enlarged view showing a display portion of the data input device constituting the LED display device according to the present invention,
4B is a diagram showing an example of data states assigned to the display unit of the data input apparatus according to the present invention
FIG. 4C illustrates an embodiment in which data stored in the memory unit of the PLC is allocated to an LED display device combined in two rows and four columns according to the present invention,
FIG. 5 is an embodiment in which a master module combined with two rows and four columns and a plurality of slave modules according to the present invention are used as an LED matrix display device of four rows and four columns.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2A is a block diagram showing an embodiment in which one LED module according to an embodiment of the present invention is connected to one master module and a plurality of slave modules. In FIG. 2B, the LED module according to the present invention includes a plurality of master modules And FIG. 2C is a block diagram illustrating an LED display device according to an embodiment of the present invention in which a plurality of master modules and a plurality of slave modules are connected to each other.

The LED display device 100 according to the present invention includes a data input device 10 for inputting data such as characters and pictures to be displayed on the master module 30 and the slave module 40; The data input device 10 receives the data such as characters and pictures and stores the data in the memory 22 and displays the data such as characters and pictures on the master module 30 and the slave module 40 And a PLC communication unit 23 for transmitting the data such as characters and pictures to the master module 30 and the slave module 40 under the control of the central processing unit 21 A PLC (Progam Logis Controller) 20 configured to include: A master LED matrix 22 for receiving and displaying data such as letters and pictures in the PLC 20 and a master LED drive controller for controlling the data of the letters and pictures to be displayed on the master LED matrix 22 And a master communication unit (33) for receiving data such as characters and pictures from the PLC (20) through the PLC communication unit (23); A slave LED matrix 42 for receiving and displaying data such as letters and pictures in the master module 30 and data such as characters and pictures inputted from the master module 30 are inputted to the slave LED matrix 42 And a slave module 40 including a slave LED driving control unit 41 for controlling the display of the slave LEDs.

Here, a plurality of master modules 30 and slave modules 40 are connected to each other so that various characters or pictures can be displayed and connected. A plurality of master modules 30 are connected to each other, A plurality of slave modules 40 may be connected through the master module 30 as shown in FIG. 2C.

When it is not necessary to specify any of the master modules 30-1 to 30-n and the plurality of slave modules 40-1 to 40-n, the representative codes 30, 40 is displayed.

The PLC communication unit 23 of the PLC 20 and the master communication unit 33 of the master module 30 according to the present invention communicate with each other through serial communication, CC-LINK, Ethernet communication, The control unit 21 receives a display area composed of the master module 30 and a plurality of slave modules 40-1 to 40-n and stores characters or pictures stored in the memory unit 22 in the display area To the master module 30 and the plurality of slave modules 40-1 to 40-n.

The master module 30 receives data such as characters or pictures allocated to the master module 30 and the plurality of slave modules 40-1 to 40-n, And each slave LED matrix 42-1, ..., 42-n.

2B, when a plurality of master modules 30 are connected, the master communication unit 33 of each master module 30 communicates with the PLC communication unit 23 to transmit data such as characters and pictures allocated thereto And displays them on the respective master LED matrices 32-1, ..., 32-n.

The data input device 10 according to the present invention can be constituted by, for example, a personal computer (PC), a notebook computer, or the like, and is provided with a dedicated program suitable for each PLC type, Writes a software program, and inputs characters, pictures, and the like to the PLC 20.

3 is a block diagram showing a configuration of an embodiment of a data input device according to the present invention.

The data input device 10 according to the present invention includes an input unit 12 for receiving data such as characters or pictures to be displayed on the master module 30 and the slave module 40 from a user; A display unit 13 for displaying data such as characters or pictures inputted from the input unit 12 and allowing the user to confirm the data; A memory unit 14 for storing a program for each type of PLC used for programming the various PLCs; A PLC program means (15) for reading data, such as characters or pictures inputted from the input unit (12), from the memory unit (14) by reading dedicated programming suitable for the PLC and programming the data; And a central control unit 11 for controlling data such as characters or pictures input from the input unit 12 to be programmed with a dedicated program suitable for the PLC.

An input unit (12) of a data input device (10) according to the present invention is a keyboard, a digitizer, a touch screen. Scanner or the like and inputs the PLC model through the input unit 12 so that the PLC program means 15 can select a dedicated program suitable for the corresponding PLC model or the central control unit 11 receives the PLC model from the PLC 20 Can be read.

The central control unit 11 reads a program suitable for the corresponding PLC model from the memory unit 14 and loads the program into the PLC program means 15 to transmit data such as characters or pictures input from the input unit 12 to the PLC 20 Program it for reading and output it.

Accordingly, the user inputs data such as characters or pictures in real time to the PLC 20 through the input unit 12, and if the master module 30 and the slave module 40 are added or removed, It can be displayed in real time without process.

The display unit 13 displays data such as characters or pictures inputted by the input unit 12 under the control of the central control unit 11 and simultaneously displays the data such as characters or pictures from the PLC 20 by the master module 30 and the slave module 40 And receives and displays the LED display area.

The user inputs data such as characters or pictures through the input unit 12 while monitoring data such as characters or pictures allocated to the LED display area displayed on the display unit 13 in real time, Slave module 40 to be displayed.

The memory unit 14 of the data input device 10 according to the present invention stores a dedicated program (XG5000, MELSEC, etc.) for each type of PLC used for programming various PLCs, The PLC program is read from the memory unit 14 and loaded into the PLC program means 15 and data such as characters or pictures inputted from the input unit 12 And then outputs the program to the PLC 20. [

The PLC 20 according to the present invention receives data such as characters and pictures to be displayed on the master module 30 and the slave module 40 from the data input device 10 and stores them in the memory 22, (For example, eight rectangular areas constituted by two rows and four columns) in which the data of the characters or pictures of the memory unit 12 are stored is corresponded to the display areas of the master module 30 and the slave module 40 And allocates and stores data such as characters and pictures to be displayed on the master module 30 and the slave module 40. [

The central processing unit 21 of the PLC 20 stores data such as letters and figures in the memory unit 22 and then stores the data in the memory area of the memory unit 22 in the master module 30 and a plurality of slave modules (For example, eight rectangular areas constituted by two rows and four columns) constituted by the master module 30 and the plurality of slave modules 40-1 to 40- 1, ..., 40-n to the master communication unit 33 of the master module 30 via the PLC communication unit 13. [

The master LED driving control unit 31 of the master module 30 controls data of characters and pictures input through the master communication unit 33 into a master LED matrix 32 and a plurality of slave modules 40 -1, ..., 40-n.

At this time, the display area added or reduced by the slave module 40, which is added or reduced at this time, senses and displays through the connector (not shown) whether the slave module 40 is connected or not.

4A is an enlarged view showing an enlarged view of a display portion of a data input device constituting an LED display device according to the present invention, and FIG. 4B is an enlarged view showing a data state assigned to a display portion of the data input device according to the present invention An example is shown.

The LED display device 200 of the present embodiment includes a data input device 10, a PLC 20, a master module 30 and seven slave modules 40-1, 40-2, ..., 40-7 ), And the data input device 10 is connected to the PLC 20 to store and display the character "beautiful fortress strong acid" in the memory unit 22 of the PLC 20. FIG.

The data input device 10 is constructed of one master module 30 and seven slave modules 40-1, 40-2, ..., 40-7 from the central processing unit 21 of the PLC 20. [ The data related to the 2 row, 4 column LED display area 13a is received and displayed on the display unit 13 as shown in the enlarged view "A " of Fig. 4A.

The user looks at the LED display area 13a of two rows and four columns displayed on the display unit 13 of the data input device 10 and displays the letter "beautiful embroidery strong acid" in the keyboard 12, And character data is assigned to the 2-row, 4-column LED display area 13a.

The central control unit 11 of the data input device 10 controls the PLC program means 15 to generate suitable programming data for the corresponding PLC 20, (23) to the PLC (20).

The PLC 20 has one master module 30 and seven slave modules 30 so as to display the character data "beautiful embroidered strong acid" from the data input device 10 in a 2-row, 4-column LED display device as shown in FIG. (40-1, 40-2, ..., 40-7).

At this time, the central processing unit 11 of the PLC 20 is connected to the storage area of the memory unit 22, one master module 30 and seven slave modules 40-1, 40-2, ..., 40-7 As shown in Fig. 4C, and assigns the character data of "beautiful fortress strong acid" stored in the memory unit 22 to each module in correspondence with 1: 1 as shown in Fig. 4C.

The first storage area 22-1, the second storage area 22-2, ..., and the eighth storage area 22-8 of the memory part 22 may be one memory cell or a plurality of memory cells . Further, the external input device and the central processing unit 21 of the PLC 20 exchange data with each other to convert 22 into a display area and display them on a monitor of an external input device (e.g., personal PC) Data such as characters and pictures to be input through an input unit (e.g., a keyboard, a mouse, etc.) of the personal computer (for example, a personal computer) is allocated and displayed in a part or whole area of the memory unit 22.

The data such as characters and pictures allocated to and stored in the memory unit 22 are transferred to the central processing unit 21 of the PLC 20 by one master module 1: The slave modules 30 and the slave modules 40-1 to 40-7 are transmitted through the PLC communication unit 23 and the master communication unit 33, Data such as a character or a picture corresponding to the character 40 is displayed.

The data corresponding to "ah" stored in the first area 22-1 of the memory unit 22 is displayed on the master LED matrix 32 of the master module 30 corresponding to the first area 22-1 And data corresponding to "space" stored in the second area 22-2 is stored in the first slave LED matrix 42-1 of the first slave module 40-1 corresponding to the second area 22-2 , And data corresponding to the "acid" stored in the eighth area 22-8 is displayed in the seventh slave module 40-7 corresponding to the eighth area 22-8, Is displayed on the slave LED matrix 42-7.

In another embodiment, the user may assign one character or figure to one module while viewing the two-row, four-column LED display area 13a displayed on the display unit 13 of the data input device 10, Can be displayed.

One character is assigned to each of the eight rectangular display areas constituted by two rows and four columns as shown in Fig. 4B, for example, in a display area composed of one master module 30 and seven slave modules 40 Or by arranging two characters per square display area as shown in FIG. 5, a display device of 4 rows and 4 columns can be made. In the case of a display device of 4 rows and 4 columns, And two characters are displayed so that the display device can be configured.

2C, a plurality of master modules 30-1, 30-2, ..., 30-n are connected to the PLC 20 and a plurality of master modules 30-1, 40-2, ..., and 40-n are connected to the slave modules 30-1, 30-2, ..., 30-n to constitute a large screen or a large outdoor billboard, The user can input a moving picture through the input unit 12 of the mobile terminal 10 or input outdoor advertising data changing in real time to display a moving image or a large outdoor advertisement.

The data displayed in the display areas of the master module 30 and the slave module 40 can be changed in real time so that moving pictures such as TVs, movies or advertisements can be displayed in real time or converted into still cuts and displayed.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

10: Data input device 11: Central control unit
12: input unit 14: memory unit
15: PLC program means 20: PLC
21: CPU 22; The memory unit
23: PLC communication unit 30: Master module
31: master LED driving control unit 32: master LED matrix
33: master communication unit 40: slave module
41: Slave LED driving control unit 42: Slave LED matrix
43: Slave communication unit 100: LED display

Claims (7)

A data input device (10) for inputting data to be displayed on the master module (30) and the slave module (40);
The master module 30 and the slave module 40 to receive data to be displayed from the data input device 10 and to store the data in the memory 22 and display the data stored in the memory 22 in the master module 30 and the slave module 40 And a PLC communication unit (23) for transmitting data to the master module (30) and the slave module (40) under the control of the central processing unit (21) 20);
A master LED matrix 22 for receiving and displaying data from the PLC 20 and a master LED drive controller 21 for controlling data inputted from the PLC 20 to be displayed on the master LED matrix 22, And a master communication unit (33) for receiving data from the PLC (20) through the PLC communication unit (23);
A slave LED driving control unit 41 for controlling the slave LED matrix 42 to display data inputted from the master module 30, And a slave module (40) including the slave module (40).
A plurality of the master modules 30 and the slave modules 40 may be connected to be extended and connected to display various characters or pictures. A plurality of the master modules 30 may be connected, A plurality of the slave modules 40 are connected to the slave modules 40 through the slave modules 40;
The data input device 10 includes an input unit 12 for receiving data to be displayed on the master module 30 and the slave module 40 from a user; A display unit 13 for displaying data inputted from the input unit 12 and allowing a user to confirm the data; A memory unit 14 for storing dedicated programs according to the types of PLCs used for programming various PLCs; PLC program means for reading and programming the dedicated program corresponding to the PLC from the memory unit 14 in order to display data inputted from the input unit 12 on the master module 30 and the slave module 40, (15); And a central control unit (11) for controlling the data input from the input unit (12) to be programmed with the dedicated program according to the PLC;
The central control unit 11 of the data input device 10 displays data inputted from the input unit 12 on the display unit 13 and simultaneously transmits the data from the PLC 20 to the master module 30, And displays the LED display area formed by the module 40 and displays data inputted through the input unit 12 to be displayed on the master module 30 and the slave module 40;
The display unit 13 displays data inputted from the input unit 12 under the control of the central control unit 11 and simultaneously displays the data inputted from the PLC 20 to the master module 30 and the slave module 40 Wherein the LED display area is configured to receive and display the LED display area.
delete The method according to claim 1,
Wherein the data input device is a personal PC or a notebook PC and includes a dedicated program corresponding to the PLC model to create a software program corresponding to the model of the PLC 20 and input the software program to the PLC 20. [ LED display device used.
delete delete delete 4. The method according to any one of claims 1 to 3,
Wherein the PLC communication unit 23 of the PLC 20 and the master communication unit 33 of the master module 30 communicate with each other through serial communication, CC-LINK, Ethernet, or DeviceNet. LED display.

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