CN112435626B - Control method and terminal of LED module - Google Patents
Control method and terminal of LED module Download PDFInfo
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- CN112435626B CN112435626B CN202011398594.8A CN202011398594A CN112435626B CN 112435626 B CN112435626 B CN 112435626B CN 202011398594 A CN202011398594 A CN 202011398594A CN 112435626 B CN112435626 B CN 112435626B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
Abstract
The invention discloses a control method and a terminal of an LED module, wherein after a driving signal is acquired, a receiving card is controlled to distribute the driving signal to a HUB board, the HUB board is controlled to distribute the acquired signal to each LED module, the LED module is controlled by one receiving card, the LED module respectively controls the driving of R, G, B chips and IR chips according to the driving signal, and the driving modes of the R, G, B chips and the IR chips are different, so that the IR chips and the R, G and B chips on the module can be driven independently by different driving modes, the brightness of the R, G and B chips is not changed while the brightness of the IR chips is changed, the independent control of the IR chips is realized, the number of driving ICs for controlling the R, G, B and IR is not required to be increased, and the wiring cost is reduced.
Description
Technical Field
The invention relates to the technical field of LED display, in particular to a control method and a terminal of an LED module.
Background
Because the infrared camera needs to accurately catch the position of the pixel point of each LED infrared induction module, the brightness of the infrared lamp needs to be improved to meet the catching requirement of the infrared camera.
The conventional LED Infrared sensing module includes an Infrared chip, and also includes R, G, and B chips, and if the brightness of the Infrared chip is to be improved, the number of Integrated Circuits (ICs) for controlling the R, G, B, and IR chips needs to be increased at the same time, so that the brightness of the R, G, and B chips and the brightness of the IR chip are improved at the same time, which brings great difficulty to the layout and wiring of the PCB and increases the cost.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the control method and the terminal of the LED module are provided, and the infrared chip can be controlled independently without increasing the cost.
In order to solve the technical problem, the invention adopts a technical scheme that:
a control method of an LED module comprises the following steps:
acquiring a driving signal, and controlling a receiving card to distribute the driving signal to a HUB board;
controlling the HUB board to distribute the driving signals to each LED module, wherein the LED modules comprise R, G, B chips and IR chips;
and controlling the LED module to respectively control the R chip, the G chip, the B chip and the IR chip to drive according to the driving signals, wherein the driving modes of the R chip, the G chip, the B chip and the IR chip are different.
In order to solve the technical problem, the invention adopts another technical scheme as follows:
a control terminal of an LED module comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the processor executes the computer program to realize the following steps:
acquiring a driving signal, and controlling a receiving card to distribute the driving signal to a HUB board;
controlling the HUB board to distribute the driving signals to each LED module, wherein the LED modules comprise R, G, B chips and IR chips;
and controlling the LED module to respectively control the R chip, the G chip, the B chip and the IR chip to drive according to the driving signals, wherein the driving modes of the R chip, the G chip, the B chip and the IR chip are different.
The invention has the beneficial effects that: after the driving signal is acquired, the receiving card is controlled to distribute the driving signal to the HUB board, the HUB board is controlled to distribute the acquired signal to each LED module, the LED module is controlled through one receiving card, the LED module respectively controls the R, G, B chip and IR chip driving according to the driving signal, and the R, G, B chip and IR chip are different in driving mode, so that the IR chip and the R, G and B chip on the module can adopt different driving modes to carry out independent driving, the brightness of the R, G and B chip is not changed while the brightness of the IR chip is changed, the independent control of the IR chip is realized, the number of driving ICs for controlling the R, G, B and IR is not required to be increased, and the wiring cost is reduced.
Drawings
Fig. 1 is a flowchart of a control method of an LED module according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a control terminal of an LED module according to an embodiment of the present invention;
fig. 3 is a flow chart of HUB board distribution signals of a method for controlling an LED module according to an embodiment of the present invention.
Detailed Description
In order to explain the technical contents, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1, the present embodiment provides a method for controlling an LED module, including:
acquiring a driving signal, and controlling a receiving card to distribute the driving signal to a HUB board;
controlling the HUB board to distribute the driving signals to each LED module, wherein the LED modules comprise R, G, B chips and IR chips;
and controlling the LED module to respectively control the R chip, the G chip, the B chip and the IR chip to drive according to the driving signals, wherein the driving modes of the R chip, the G chip, the B chip and the IR chip are different.
From the above description, the beneficial effects of the present invention are: after the drive signal is acquired, the control receiving card distributes the drive signal to the HUB board, the control HUB board distributes the acquired signal to each LED module, the LED module is controlled through one receiving card, the LED module respectively controls R, G, B chip and IR chip drive according to the drive signal, and R, G, the drive mode of B chip and IR chip is different, therefore, the IR chip and R on the module, G, B chip can adopt different drive modes to carry out independent drive, the brightness of R, G, B chip is not changed when changing the brightness of IR chip, realize the independent control to the IR chip, and also need not increase the drive IC quantity of control R, G, B, IR, and the wiring cost is reduced.
Further, the controlling the HUB board to distribute the driving signal to each LED module includes:
the receiving card divides the driving signals into a plurality of groups, and each group comprises signals corresponding to the R, G and B chips and signals corresponding to the IR chip;
and the HUB board sends the multiple groups of driving signals to each LED module in the control area of the receiving card.
As can be seen from the above description, the receiving card divides the driving signals into a plurality of groups, each group of signals includes signals for controlling the R, G, B chips and signals for controlling the IR chip, so that the LED module can respectively control the R, G, B chips and the IR chip after receiving the signals.
Further, the driving signals comprise a latch signal, a clock signal and an enable signal;
the control the LED module according to drive signal control respectively R, G, B chip and IR chip drive include:
controlling the LED module to respectively control the R, G and B chips and the IR chip to drive according to the latching signal and the clock signal, wherein the R, G and B chips and the IR chip share the clock signal and the latching signal in the signal;
and controlling the LED module to respectively control the R chip, the G chip, the B chip and the IR chip to drive according to the enabling signals, wherein the R chip, the G chip, the B chip and the IR chip have respective corresponding enabling signals.
As can be seen from the above description, the driving signal includes data, latch, enable, and clock signals, which include information required for controlling the LED module, and the driving mode of the chip in the LED module can be directly and effectively controlled by the driving signal; in the received signals, two groups of enable signals are provided, the R chip, the G chip, the B chip and the IR chip are respectively controlled, and the R chip, the G chip, the B chip and the IR chip can have different driving modes.
Furthermore, the scanning numbers of the driving modes adopted by the R, G and B chips comprise a plurality of types.
From the above description, the R, G, and B chips have multiple scan driving modes, and can be adapted to various driving requirements.
Further, the IR chip adopts static drive or scan drive which is less than the scan number of the R, G and B chips.
It can be known from the above description that the scan driving method of the IR chip is different from that of the R, G, and B chips, so that different scan driving methods can be implemented on the same module.
Referring to fig. 2, another embodiment of the present invention provides a control terminal for an LED module, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor executes the computer program to implement the following steps:
acquiring a driving signal, and controlling a receiving card to distribute the driving signal to a HUB board;
controlling the HUB board to distribute the driving signals to each LED module, wherein the LED modules comprise R, G and B chips and IR chips;
and controlling the LED module to respectively control the R, G and B chips and the IR chip to drive according to the driving signals, wherein the driving modes of the R, G and B chips and the IR chip are different.
From the above description, the beneficial effects of the present invention are: after the drive signal is acquired, the control receiving card distributes the drive signal to the HUB board, the control HUB board distributes the acquired signal to each LED module, the LED module is controlled through one receiving card, the LED module respectively controls R, G, B chip and IR chip drive according to the drive signal, and R, G, the drive mode of B chip and IR chip is different, therefore, the IR chip and R on the module, G, B chip can adopt different drive modes to carry out independent drive, the brightness of R, G, B chip is not changed when changing the brightness of IR chip, realize the independent control to the IR chip, and also need not increase the drive IC quantity of control R, G, B, IR, and the wiring cost is reduced.
Further, the controlling the HUB board to distribute the driving signal to each LED module includes:
the receiving card divides the driving signals into a plurality of groups, and each group comprises signals corresponding to the R, G and B chips and signals corresponding to the IR chip;
and the HUB board sends the multiple groups of driving signals to each LED module in the control area of the receiving card.
As can be seen from the above description, the receiving card divides the driving signals into a plurality of groups, each group of signals includes signals for controlling the R, G and B chips and signals for controlling the IR chip, so that the LED module can respectively control the R, G, B chips and the IR chip after receiving the signals.
Further, the driving signals comprise a latch signal, a clock signal and an enable signal;
the control LED module according to drive signal control respectively R, G, B chip and IR chip drive include:
controlling the LED module to respectively control the R chip, the G chip, the B chip and the IR chip to drive according to the latching signal and the clock signal, wherein the R chip, the G chip, the B chip and the IR chip share the clock signal and the latching signal in the signals;
and controlling the LED module to respectively control the R chip, the G chip, the B chip and the IR chip to drive according to the enabling signals, wherein the R chip, the G chip, the B chip and the IR chip have respective corresponding enabling signals.
As can be seen from the above description, the driving signal includes data, latch, enable, and clock signals, which include information required for controlling the LED module, and the driving mode of the chip in the LED module can be directly and effectively controlled by the driving signal; in the received signals, two groups of enable signals are provided, the R chip, the G chip, the B chip and the IR chip are respectively controlled, and the R chip, the G chip, the B chip and the IR chip can have different driving modes.
Furthermore, the scanning numbers of the driving modes adopted by the R, G and B chips comprise a plurality of types.
From the above description, the R, G, and B chips have multiple scan driving modes, and can be adapted to various driving requirements.
Further, the IR chip adopts static drive or scan drive which is less than the scan number of the R, G and B chips.
As can be seen from the above description, the scan driving method of the IR chip is different from that of the R, G, and B chips, so that different scan driving methods can be implemented on the same module.
The control method and the terminal of the LED module can realize the independent control of the infrared chip without increasing the cost, and are described in the following by specific embodiments:
example one
Referring to fig. 1, the present embodiment is a method for controlling an LED module, including:
acquiring a driving signal, and controlling a receiving card to distribute the driving signal to a HUB board;
the receiving card distributes signals such as data, latch, clock, enable and the like to the HUB through a buffer;
controlling the HUB board to distribute the driving signals to each LED module, wherein the LED modules comprise R, G and B chips and IR chips;
the receiving card divides the driving signals into a plurality of groups, and each group comprises signals corresponding to the R, G and B chips and signals corresponding to the IR chip;
the HUB board sends the multiple groups of driving signals to each LED module in the receiving card control area, in the embodiment, an LED on the module consists of four chips of R, G, B and IR, the positive levels of the chips of R, G, B and IR are common levels, namely the positive levels of the chips of R, G, B and IR are connected together, and the driving mode is common positive;
specifically, the number of data groups output by the receiving card is divided into a plurality of groups, each group respectively controls a plurality of R, G, B chips and IR chips, the display content of the control area of each receiving card is output into a plurality of groups by the main control FPGA chip on the receiving card, each group contains data signals of the R, G, B and IR chips, the number of data groups of a common module design is fixed, for example, 1 group, 2 groups or 3 groups, and the like, one receiving card is matched with one HUB board, and the area of one receiving card belt is fixed according to the transverse number of the modules and the longitudinal number of the modules. For example, one module is 1 group of data, the control card, that is, the HUB plate is provided with 3 transverse modules and 3 vertical modules, so that the HUB plate needs to receive 9 groups of data signals from the receiving card totally, according to the corresponding position of the module, the 1 st group of data is divided into the module No. 1, the 2 nd group of data is divided into the module No. 2, and so on, the 9 th group of data is divided into the module No. 9, so that the HUB plate can evenly distribute data to each module according to the number of the driving modules;
controlling the LED module to respectively control the R chip, the G chip, the B chip and the IR chip to drive according to the driving signals, wherein the driving modes of the R chip, the G chip, the B chip and the IR chip are different;
the scanning number of the driving modes adopted by the R, G and B chips comprises a plurality of types, and the IR chip adopts static driving or scanning driving smaller than the scanning number of the R, G and B chips;
specifically, the R, G and B chips on the LED module adopt a scanning driving mode including 1/2,1/3,1/4 and other scanning numbers, namely, the single channel output of each IC can control 2, 3, 4 LEDs and the like; the IR chip on the LED module adopts static drive or scanning drive smaller than R, G and B chips, namely, the output of a single channel of each IC can control 1 LED.
Example two
The difference between this embodiment and the first embodiment is that a method for distributing driving signals for a HUB board is further defined, specifically:
controlling the LED module to respectively control the R, G and B chips and the IR chip to drive according to the latching signal and the clock signal, wherein the R, G and B chips and the IR chip share the clock signal and the latching signal in the signal;
controlling the LED module to respectively control the R chip, the G chip, the B chip and the IR chip to drive according to the enabling signals, wherein the R chip, the G chip, the B chip and the IR chip have the corresponding enabling signals respectively;
specifically, in this embodiment, referring to fig. 3, the hub board receives four types of signals, namely, clock, latch, enable and data, from the receiving card, wherein the R, G, B chips and the IR chip share the clock signal and the latch signal in the constant current driving IC signal for controlling the R, G, B chips and the IR chip, and the R, G, B chips and the IR chip respectively control the R, G, B chips and the IR chip by acquiring enable 1 and enable 2 from the receiving card due to different scanning modes. Specifically, in the conventional driving mode, when the valid signal is enabled, the latch signal is high level, the serial data is transmitted to the output latch, when the latch signal is low level, the data is latched, and the clock signal shifts to the next channel during the rising edge valid period. The IC for controlling the IR chip provides a single enabling signal at the control end of the receiving card no matter what state the control IC of the R, G and B chips are in, so that the control IC is in a normally open or closed state, and the pulse width of the enabling signal can be adjusted to adjust the brightness of the IR.
EXAMPLE III
Referring to fig. 2, a control terminal of an LED module includes a memory, a processor, and a computer program stored in the memory and capable of running on the processor, where the processor executes the computer program to implement each step of the control method of the LED module in the first embodiment or the second embodiment.
In summary, according to the control method and the terminal for the LED module provided by the present invention, after the driving signal is acquired, the receiving card is controlled to distribute the driving signal to the HUB board, and the HUB board is controlled to distribute the acquired signal to each LED module, so as to control the LED module through one receiving card, wherein the receiving card divides the driving signal into a plurality of groups, each group of signals includes a signal for controlling the R, G, and B chips and a signal for controlling the IR chip, and it is ensured that the R, G, and B chips and the IR chip can be respectively controlled after the LED module receives the signal, the LED module respectively controls the R, G, B, and IR chip to drive according to the driving signal, and the R, G, B chips and the IR chip have different driving modes, the R, G, and B chips share the clock signal and the latch signal in the signal, and the R, G, B chips and the IR chip have respective corresponding enabling signals, so that the IR chip, the R, G, B chip, and the IR chip on the module can be respectively driven in different driving modes, and ensure that the luminance of the R, G, B chip is not changed, and the IR chip is independently controlled, and the number of the R, G, and IR chip is not increased, and the IC is reduced, and the control cost of the IC chip is also reduced.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (4)
1. A control method of an LED module is characterized by comprising the following steps:
acquiring a driving signal, and controlling a receiving card to distribute the driving signal to a HUB board;
controlling the HUB board to distribute the driving signals to each LED module, wherein the LED modules comprise R, G and B chips and IR chips;
controlling the LED module to respectively control the R chip, the G chip, the B chip and the IR chip to drive according to the driving signals, wherein the driving modes of the R chip, the G chip, the B chip and the IR chip are different; the IR chip adopts scanning drive which is less than the scanning number of the R, G and B chips;
the driving signals comprise a latch signal, a clock signal and an enable signal; two groups of enable signals in the driving signals are used for respectively controlling the R chip, the G chip and the B chip and the IR chip;
the control LED module according to drive signal control respectively R, G, B chip and IR chip drive include:
controlling the LED module to respectively control the R chip, the G chip, the B chip and the IR chip to drive according to the latching signal and the clock signal, wherein the R chip, the G chip, the B chip and the IR chip share the clock signal and the latching signal in the signals;
controlling the LED module to respectively control the R chip, the G chip, the B chip and the IR chip to drive according to the enabling signals, wherein the R chip, the G chip, the B chip and the IR chip have the corresponding enabling signals respectively;
the controlling the HUB board to distribute the driving signal to each LED module includes:
the receiving card divides the driving signals into a plurality of groups, and each group comprises signals corresponding to the R, G and B chips and signals corresponding to the IR chip;
and the HUB board sends the multiple groups of driving signals to each LED module in the control area of the receiving card.
2. The method as claimed in claim 1, wherein the number of scans of the driving method adopted by the R, G and B chips includes a plurality of types.
3. A control terminal of an LED module comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, and is characterized in that the processor executes the computer program to realize the following steps:
acquiring a driving signal, and controlling a receiving card to distribute the driving signal to a HUB board;
controlling the HUB board to distribute the driving signals to each LED module, wherein the LED modules comprise R, G, B chips and IR chips;
controlling the LED module to respectively control the R chip, the G chip, the B chip and the IR chip to drive according to the driving signals, wherein the driving modes of the R chip, the G chip, the B chip and the IR chip are different; the IR chip adopts scanning drive which is less than the scanning number of R, G and B chips;
the driving signals comprise a latch signal, a clock signal and an enable signal; two groups of enable signals in the driving signals are used for respectively controlling the R chip, the G chip and the B chip and the IR chip;
the control LED module according to drive signal control respectively R, G, B chip and IR chip drive include:
controlling the LED module to respectively control the R chip, the G chip, the B chip and the IR chip to drive according to the latching signal and the clock signal, wherein the R chip, the G chip, the B chip and the IR chip share the clock signal and the latching signal in the signals;
controlling the LED module to respectively control the R, G, B chips and the IR chip to drive according to the enabling signals, wherein the R, G, B chips and the IR chip have the corresponding enabling signals respectively;
the controlling the HUB board to distribute the driving signal to each LED module includes:
the receiving card divides the driving signals into a plurality of groups, and each group comprises signals corresponding to the R, G and B chips and signals corresponding to the IR chip;
and the HUB board sends the multiple groups of driving signals to each LED module in the control area of the receiving card.
4. The control terminal of claim 3, wherein the scanning numbers of the driving modes adopted by the R, G and B chips comprise a plurality of types.
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| CN100585688C (en) * | 2007-07-26 | 2010-01-27 | 鼎丞科技有限公司 | LED matrix device |
| US9355599B2 (en) * | 2014-03-06 | 2016-05-31 | 3M Innovative Properties Company | Augmented information display |
| CN107919069A (en) * | 2018-01-02 | 2018-04-17 | 南京逸杰软件科技有限公司 | Possess programmable infrared illumination and cannula type LED display modules and application |
| CN210535323U (en) * | 2019-09-29 | 2020-05-15 | 深圳市洲明科技股份有限公司 | Display driving circuit and display screen |
| CN210837751U (en) * | 2019-10-16 | 2020-06-23 | 深圳市时代华影科技股份有限公司 | Compound LED packaging structure, module, anti-theft shooting LED screen and display system |
| CN211630293U (en) * | 2020-01-20 | 2020-10-02 | 蓝硕文化科技(上海)有限公司 | Interactive LED display device and interactive system |
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