CN205082031U - Light-emitting diode control system and drive circuit board - Google Patents

Abstract

The utility model discloses a light emitting diode control system and dirver circuit board. The LED control system comprises an LED lamp group and a driving circuit board. The driving circuit board comprises a connector, a lamp group control circuit and a power supply circuit. The connector is used for being electrically connected with the LED lamp set. The lamp group control circuit is electrically connected with the connector and generates a control signal to the connector. The power supply circuit is electrically connected with the connector and is used for generating power to the connector. Therefore, the utility model discloses a light emitting diode control system provides an open control system, and then produces the light change of more situation formulas.

Description

Light-emitting diode control system and drive circuit board

technical field

The utility model relates to a driving circuit board, in particular to a light emitting diode control system and a driving circuit board.

Background technique

In advertising light boxes, marquees, warning devices or some light-emitting diode control systems with luminous effects, light-emitting diode (light-emitting diode, LED) lamp groups are often used as light sources. A series of light-emitting diodes are arranged, and different light special effects are achieved by using the light-emitting diodes to emit the same or different color lights.

After a specific arrangement, the LED light group can be arranged in different flickering, light and dark, geometric arrangement effects, and can project a variety of different colors of colored light with different control signals. The LED light sets on the market will be equipped with a set of controllers set by the manufacturer, and this controller is responsible for setting certain specific color changes of the light set. Generally speaking, the known controllers cannot change the color of the LED lamp group according to the usage situation, nor allow the user to freely modify the desired special effect mode.

The controllers and LED light sets on the market are sold together as a set. The main reason is that the arrangement of the signal lines used to control the red light, green light, and blue light may be different in the LED light sets of different manufacturers. Therefore, if you use different Mixing and matching of manufacturers' LED light sets and controllers may cause color confusion.

Utility model content

The purpose of the utility model is to provide a light-emitting diode control system and a driving circuit board, provide an open control system, and then generate more situational lighting changes.

An embodiment of the present invention provides a light emitting diode control system, the light emitting diode control system includes a light emitting diode lamp group and a driving circuit board. The driving circuit board includes connectors, light group control circuits and power supply circuits. The connector is used for electrical connection with the LED light set. The lamp group control circuit is electrically connected with the connector, and the lamp group control circuit generates a control signal to the connector. The power supply circuit is electrically connected with the connector, and the power supply circuit is used to generate power to the connector.

In multiple embodiments of the present invention, the connector includes a first signal line, a second signal line, a third signal line and a fourth signal line, and the lamp group control circuit generates the first pulse width modulation signal, the second pulse width modulation signal, and the second signal line. The width modulation signal and the third pulse width modulation signal and the first pulse width modulation signal, the second pulse width modulation signal and the third pulse width modulation signal are respectively transmitted to the first signal line, the second signal line and The third signal line, the power supply circuit transmits power to the fourth signal line.

In various embodiments of the present utility model, the LED control system further includes a processor, and the processor controls the lamp group control circuit to switch between the first PWM signal, the second PWM signal and the third PWM signal. change signal.

In multiple embodiments of the present invention, the LED control system further includes a processor, and the processor transmits the corresponding color light presentation data to the lamp group control circuit according to the system temperature, system frequency or playing sound effects.

In several embodiments of the present invention, the power supply circuit includes a constant voltage source and a power protection switch, and the power protection switch is coupled between the constant voltage source and the connector.

Another embodiment of the present invention provides a driving circuit board, which is used to drive the LED lamp group. The driving circuit board includes a connector, a lamp group control circuit and a power supply circuit. The connector is used for electrical connection with the LED light set. The lamp group control circuit is electrically connected with the connector, and the lamp group control circuit generates a control signal to the connector. The power supply circuit is electrically connected with the connector, and the power supply circuit is used to generate power to the connector.

In multiple embodiments of the present invention, the connector includes a first signal line, a second signal line, a third signal line and a fourth signal line, and the lamp group control circuit generates the first pulse width modulation signal, the second pulse width modulation signal, and the second signal line. The width modulation signal and the third pulse width modulation signal and the first pulse width modulation signal, the second pulse width modulation signal and the third pulse width modulation signal are respectively transmitted to the first signal line, the second signal line and The third signal line, the power supply circuit transmits power to the fourth signal line.

In multiple implementations of the present utility model, the control circuit of the lamp group switches the first pulse width modulation signal, the second pulse width modulation signal and the third pulse width modulation signal.

In several embodiments of the present invention, the power supply circuit includes a constant voltage source and a power protection switch, and the power protection switch is coupled between the constant voltage source and the connector.

The general lamp group controller is a closed control system, and the light display mode is fixed. Through the utility model, the lamp group control circuit and the connector are arranged on the driving circuit board, and the lamp group control program can be used to control the lamp group control circuit. This utility model provides an open control system, and then produces more situational lighting changes.

Description of drawings

FIG. 1 is a functional block diagram of an LED control system according to an embodiment of the present invention; and

FIG. 2 is a further schematic block diagram of the driving circuit board of the LED control system in FIG. 1 .

detailed description

The following examples are described in detail with reference to the accompanying drawings, but the provided examples are not intended to limit the scope of this case, and the description of the structure and operation is not intended to limit the order of its execution, any structure recombined by components, so Devices that produce equivalent functions are all within the scope of this case. In addition, the drawings are for illustration purposes only and are not drawn to original scale.

Please refer to FIG. 1 , which is a schematic diagram of an LED control system 100 according to an embodiment of the present invention. In the embodiment shown in FIG. 1 , the LED control system 100 includes a LED lamp group 120 and a driving circuit board 140 . The driving circuit board 140 is used to drive the LED light set 120 to emit light. In one embodiment, the driving circuit board 140 controls the LED lamp group 120 to emit light with different frequencies, brightnesses, colors, color arrangements, and light and dark sequences, thereby achieving various lighting effects.

In this embodiment, the LED lamp set 120 includes a plurality of LEDs 122 and a connection interface 124 , and the plurality of LEDs 122 are sequentially arranged at different positions in the LED lamp set 120 . For example, the LED light set 120 includes a flexible protective casing made of transparent or translucent material, and a plurality of LEDs 122 are disposed in the flexible protective casing.

As shown in FIG. 1 , the driving circuit board 140 includes a power supply circuit 142 , a lamp group control circuit 144 and a connector 146 . The connector 146 is used for electrically connecting with the connection interface 124 of the LED lamp set 120 .

The connector 146 includes a plurality of signal lines. In one embodiment, the signal lines of the connector 146 include four signal lines P1 , P2 , P3 and P4 . The signal lines P1 to P4 are used to transmit the control signal generated by the driving circuit board 140 to the LED lamp group 120 , thereby lighting the LED lamp group 120 . In this embodiment, the connector 146 includes four signal lines P1, P2, P3 and P4, but the present invention is not limited thereto, and in practical applications, the signals required by the LED lamp group 120 can be set accordingly The number of necessary signal lines is not limited to four.

The lamp group control circuit 144 is electrically connected to the connector 146 , and the lamp group control circuit 144 is used to generate control signals to a plurality of signal lines of the connector 146 . The power supply circuit 142 is electrically connected to the connector 146 , and the power supply circuit 142 is used for supplying power PWR to the connector 146 .

The lamp group control circuit 144 is used to generate three sets of PWM signals, namely the first PWM signal SR, the second PWM signal SG and the third PWM signal SB. In one embodiment , which are respectively the red light PWM signal SR, the green light pulse width modulation signal SG and the blue light pulse width modulation signal SB, and the signal lines P1 , P2 and P3 to the connector 146 . The power supply circuit 142 generates the power PWR to the signal line P4 of the connector 146 .

In one embodiment, the light emitting diodes 122 with different sorting positions can respectively receive different proportions of the red light PWM signal SR, the green light pulse width modulation signal SG and the blue light pulse width modulation signal SB according to different timings. , to control the LEDs 122 of different colors.

As shown in FIG. 1 , the LED control system 100 further includes a processor 160 for executing a lamp group control program. The lamp group control program is used to provide a corresponding operation interface, and can be set on the operation interface, select the lighting effect mode to be executed by the LED lamp group 120 in the pre-stored lighting effect mode menu, such as color, color temperature, flickering Speed, light and dark mode, geometric arrangement, special effect switching speed, etc., and the lighting effect mode of the LED lamp group 120 can be designed by itself in the operation interface.

The lamp group control program sends the operation instruction INS to the lamp group control circuit 144 to adjust various parameters of the first PWM signal SR, the second PWM signal SG and the third PWM signal SB, such as intensity ,order. The first PWM signal SR, the second PWM signal SG, and the third PWM signal SB respectively set different duty cycle (DutyCycle) of the PWM, and respectively according to the LED lamp group 120 The intensity ratio of red light/green light/blue light of the plurality of LEDs 122 is used to mix colors and adjust the brightness of the LED lamp group 120 .

In addition, the corresponding relationship between the connection interface 124 of the LED lamp set 120 produced by different manufacturers and the signal lines P1 , P2 and P3 of the connector 146 is not necessarily the same. Therefore, it may happen that the red light PWM signal SR, the green light pulse width modulation signal SG and the blue light pulse width modulation signal SB are sent to the signal lines P1, P2 and P3, but wrongly correspond to the LED lamp group 120. Different shade sequences.

For example, the signal line P1 actually corresponds to controlling the green light of the LED lamp group 120 , the signal line P2 actually corresponds to controlling the blue light of the LED lamp group 120 , and the signal line P3 actually corresponds to controlling the red light of the LED lamp group 120 . At this time, the brightness ratio may be confused. In this embodiment, the lamp group control program sends the user operation instruction INS to the lamp group control circuit 144 to adjust the first PWM signal SR, the second PWM signal SG and the third PWM signal SB. Arrange the order, and then modify the order of the corresponding multiple display colors.

In one embodiment, the first pulse width modulation signal SR is sent to the signal line P3, the second pulse width modulation signal SG is sent to the signal line P1, and the third pulse width modulation signal SB is sent to the signal line P2, to adjust the corresponding relationship between the control signal and the arrangement order of the LEDs 122 in the LED lamp group 120 . Therefore, regardless of the LED lamp set 120 produced by any manufacturer, the driving circuit board 140 can generate control signals corresponding to the correct sequence.

In one embodiment, the driving circuit board 140 is a main board of the electronic device 110 , and the processor 160 is a central processing unit of the electronic device 110 . In practical applications, the electronic device 110 is a personal computer, an industrial computer, a server, a control box of an advertising light box, or other similar electronic devices. As shown in FIG. 1 , the driving circuit board 140 further includes a chipset 148 on the motherboard, and the chipset 148 is coupled between the processor 160 and the lamp group control circuit 144 .

In one embodiment, data transmission is performed between the chipset 148 and the processor 160 through a direct media interface (DirectMediaInterface, DMI) bus, and the chipset 148 and the lamp group control circuit 144 are connected through a system management bus (System Management Bus, SMBUS), serial The serial peripheral interface (Serial Peripheral Interface, SPI) slave bus or the integrated circuit (Inter-Integrated Circuit, I2C) bus for data transmission. For example, the chipset 148 is a south/north bridge chipset on the motherboard or other chipsets that manage the bus.

In one embodiment, the lamp group control program transmits the corresponding color light presentation data according to the current system temperature, system frequency or current playing sound effect of the electronic device 110 (such as a personal computer, an industrial computer, a server, a control box of an advertising light box, etc.) To the lamp group control circuit 144. Therefore, the lamp group control circuit 144 can correspondingly drive the LED lamp group 120 according to the color light effect data. In some embodiments, the color rendering data can be transmitted along with the operation instruction INS generated by the lamp group control program.

In one embodiment, if the sound effect played by the electronic device 110 at this time is a fast-paced dance music, the light set control circuit 144 makes the LED light set 120 flash quickly according to the corresponding color light presentation data. If the playing sound effect of the electronic device 110 at this time is slow crystal music, the light set control circuit 144 switches the LED light set 120 slowly according to the corresponding color light presentation data. If the system temperature of the electronic device 110 changes at this time, the lamp group control circuit 144 causes the color of the LED lamp group 120 to change correspondingly according to the corresponding color display data.

Please also refer to FIG. 2 , which is a further schematic block diagram of the driving circuit board 140 of the LED control system 100 in FIG. 1 . As shown in FIG. 2, the lamp group control circuit 144 in the driving circuit board 140 includes a pulse width modulation circuit 144a, and the pulse width modulation circuit 144a includes three sets of pulse width modulation output interfaces to output the first pulse width modulation signal SR respectively. , the second PWM signal SG and the third PWM signal SB, but the present invention is not limited thereto.

In one embodiment, the lamp group control circuit 144 includes three sets of pulse width modulation circuits (not shown in the figure) which output the first pulse width modulation signal SR, the second pulse width modulation signal SG and the third pulse width modulation signal respectively. Change signal SB.

As shown in FIG. 2 , the power supply circuit 142 includes a constant voltage source 142 a and a power protection switch 142 b, and the power protection switch 142 b is coupled between the constant voltage source 142 a and the connector 146 . The power protection switch 142b is used to limit the current output from the constant voltage source 142a to the power PWR of the connector 146 for current overload or protection.

The general light group controller is a closed control system, and the light display mode is fixed. Through the utility model, the light group control circuit 144 and the connector 146 are set on the driving circuit board 140, and the light group control program can be used to control the light group control. Circuit 144, thereby providing an open control system, thereby producing more situational lighting changes.

The lamp group control program can provide the function of correcting the sequence of color and light, so that the first PWM signal SR, the second PWM signal SG and the third PWM signal SB are transmitted to the correct signal lines P1 to P4, so In this way, the driving circuit board 140 can be applied to the LED light sets 120 produced by different manufacturers. The lamp group control program sets the outputs of the first PWM signal SR, the second PWM signal SG, and the third PWM signal SB respectively, and through the measurement signal, the three groups of first pulse widths can be known The corresponding relationship between the modulation signal SR, the second pulse width modulation signal SG and the third pulse width modulation signal SB and the red/green/blue light in the LED lamp group 120, so that the LED lamp groups in different sequences can be correctly controlled 120.

Although the utility model has been disclosed as above with the embodiments, it is not intended to limit the utility model, and any person skilled in the art may make some changes and modifications without departing from the spirit and scope of the utility model, so the utility model The scope of protection of the novelty shall be subject to what is defined in the claims.

Claims (9)

1. A light-emitting diode control system, characterized in that, said light-emitting diode control system comprises: light-emitting diode lamps; and Driver board, which contains: a connector, which is used to electrically connect with the light emitting diode lamp group; a lamp group control circuit, which is electrically connected to the connector, and the lamp group control circuit generates a control signal to the connector; and The power supply circuit is electrically connected with the connector, and the power supply circuit is used to generate power to the connector. 2. The LED control system according to claim 1, wherein the connector includes a first signal line, a second signal line, a third signal line and a fourth signal line, and the lamp group control circuit generates The first pulse width modulation signal, the second pulse width modulation signal and the third pulse width modulation signal and the first pulse width modulation signal, the second pulse width modulation signal and the third pulse width modulation signal The wide modulation signal is transmitted to the first signal line, the second signal line and the third signal line respectively, and the power supply circuit transmits the power to the fourth signal line. 3. The light emitting diode control system according to claim 2, wherein the light emitting diode control system further comprises a processor, and the processor controls the lamp group control circuit to switch the first pulse width modulation signal, the second PWM signal and the third PWM signal. 4. The light emitting diode control system according to claim 1, wherein the light emitting diode control system further comprises a processor, and the processor transmits the corresponding color light display data according to the system temperature, system frequency or playing sound effect to the lamp group control circuit. 5. The LED control system according to claim 1, wherein the power supply circuit comprises a constant voltage source and a power protection switch, and the power protection switch is coupled to the constant voltage source and the connector between. 6. A driving circuit board, used to drive light-emitting diode lamps, characterized in that the driving circuit board comprises: a connector, which is used to electrically connect with the light emitting diode lamp group; a lamp group control circuit, which is electrically connected to the connector, and the lamp group control circuit generates a control signal to the connector; and The power supply circuit is electrically connected with the connector, and the power supply circuit is used to generate power to the connector. 7. The driving circuit board according to claim 6, wherein the connector includes a first signal line, a second signal line, a third signal line and a fourth signal line, and the lamp group control circuit generates the first signal line A pulse width modulation signal, a second pulse width modulation signal and a third pulse width modulation signal and the first pulse width modulation signal, the second pulse width modulation signal and the third pulse width Modulation signals are respectively transmitted to the first signal line, the second signal line and the third signal line, and the power supply circuit transmits the power to the fourth signal line. 8. The driving circuit board according to claim 7, wherein the lamp group control circuit switches the first pulse width modulation signal, the second pulse width modulation signal and the third pulse width modulation signal. 9. The driving circuit board according to claim 6, wherein the power supply circuit comprises a constant voltage source and a power protection switch, and the power protection switch is coupled between the constant voltage source and the connector between.