CN215933163U - Variable lane sign synchronous dimming system based on LED module - Google Patents
Variable lane sign synchronous dimming system based on LED module Download PDFInfo
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- CN215933163U CN215933163U CN202122145719.2U CN202122145719U CN215933163U CN 215933163 U CN215933163 U CN 215933163U CN 202122145719 U CN202122145719 U CN 202122145719U CN 215933163 U CN215933163 U CN 215933163U
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Abstract
The utility model relates to the technical field of traffic signals, in particular to a lane-changeable sign synchronous dimming system based on an LED module, which comprises an external AC220V power supply input, a power supply, a control main board, the LED module, an AC220V signal input 1, an AC220V signal input 2, an AC220V dimming signal input and a burning interface, and is characterized in that the AC220V power supply input is connected to the power supply, the power supply is connected to the control main board and the LED module, the AC220V signal input 1, the AC220V signal input 2 and the AC220V dimming signal input are connected to the control main board, the control main board is connected to the LED module, and the burning interface is connected to the control main board. According to the utility model, when a plurality of signs are used together, the AC220V dimming signals are input and connected together, so that the AC220V dimming signals of the signs are input uniformly, and the synchronous dimming function of the product is realized.
Description
Technical Field
The utility model relates to the technical field of traffic lights, in particular to a lane-changeable sign synchronous dimming system based on an LED module.
Background
The variable lane sign of publicly known LED has the demand of adjusting luminance, and some adopt the photosensitive resistor to detect ambient light and adjust sign luminance, and its not enough are that the photosensitive resistor damages easily, and photosensitive ambient light that receives is inequality on the different signs simultaneously, and the parameter of photosensitive resistor has the tolerance simultaneously, can not accomplish completely unanimously, and it can't be synchronous to adjust luminance when leading to different signs to use together.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects in the prior art, and provides a lane-changeable sign synchronous dimming system based on an LED module.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the designed synchronous dimming system of the variable lane sign based on the LED module comprises an external AC220V power supply input, a power supply, a control main board, the LED module, an AC220V signal input 1, an AC220V signal input 2, an AC220V dimming signal input and a burning interface, and is characterized in that the AC220V power supply input is connected to the power supply and then connected to the control main board and the LED module, the AC220V signal input 1, the AC220V signal input 2 and the AC220V dimming signal input are connected to the control main board, the control main board is then connected to the LED module, and the burning interface is connected to the control main board.
Preferably, the control main board controls the display program to display low brightness when the AC220V dimming signal is input with power, and controls the display program to display normal brightness when the AC220V dimming signal is input with no power.
Preferably, when a plurality of signs are used together, the AC220V dimming signals are input and connected together, so that the AC220V dimming signals of the plurality of signs are input uniformly, and the synchronous dimming function of the product is realized.
Preferably, the control main board comprises an AC220 input P1, an AC-to-DC power supply U1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, an optical coupler U2, an optical coupler U3, an optical coupler U5, a single chip microcomputer U4, a load DC power supply output P2, an LED module control output P3 and a burning port P4;
an external alternating current is connected to an AC220 input P1, electricity is connected to an input L pin and an input N pin of an AC-to-DC power supply U1 through a pin 1 and a pin 5 of the AC220 input P1, wherein the pin 5 of the P1 is a common N pin, the AC-to-DC power supply U1 is electrified to work, direct current is output from VDD and GND pins to supply to a singlechip U4 and an LED module to control and output P3, the singlechip U4 is electrified to work, one end of a resistor R3 is connected to VDD, the other end of the resistor R3 is connected to a pin Rin at the output end of an optocoupler U2 to realize the pull-up function of a resistor R3, the other pin at the output end of the optocoupler U2 is connected to GND, a signal at the input end of the optocoupler U2 is input into a pin 2 of the P1 through an AC220 signal input 1, the input end of the optocoupler U2 is connected to the optocoupler U2 through the input end, the common pin 5 of the P1 to form a loop, when the AC220V signal input 1 is electrified, the input end of the optocoupler is connected, the U2 is connected with the output end of the optocoupler, the U2 is connected to realize the Rin to realize the low level of the low level GND, on the contrary, when the AC220V signal input 1 is not powered, the input end of the optical coupler U2 is not turned on, the output end of the optical coupler U2 is not turned on, the pin Rin is pulled up to VDD by the resistor R3, so that the pin Rin is represented as a high level at the moment, when the AC220V signal input 1 is powered, the pin Rin is controlled to be a low level, and when the AC220V signal input 1 is not powered, the pin Rin is controlled to be a high level. Similarly, when the AC220V signal input 2 is electrified, the voltage passes through the pin 3 of the P1, the resistor R2 and the optocoupler U3 to control the pin Gin to be low level, and when the voltage does not exist, the pin Gin is pulled up to be high level by the resistor R4; the dimming signal input of the AC220V passes through a pin 4 of a P1, a resistor R6, an optocoupler U5 and a public 5 pin of the P1 to form a loop, when the dimming signal input of the AC220V is electrified, the optocoupler U5 conducts a control pin Dim to be at a low level, and when the dimming signal input of the AC220V is not electrified, the pin Dim is pulled up to be at a high level by the resistor R5.
The lane-changeable sign synchronous dimming system based on the LED module has the advantages that: according to the utility model, when a plurality of signs are used together, the AC220V dimming signals are input and connected together, so that the AC220V dimming signals of the signs are input uniformly, and the synchronous dimming function of the product is realized.
Drawings
Fig. 1 is a block diagram of a variable lane sign synchronous dimming system based on LED modules according to the present invention;
fig. 2 is a schematic circuit diagram of a control main board of the lane-changeable sign synchronous dimming system based on the LED module according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-2, a lane-changeable sign synchronous dimming system based on an LED module comprises an external AC220V power supply input, a power supply, a control main board, an LED module, an AC220V signal input 1, an AC220V signal input 2, an AC220V dimming signal input and a burning interface, wherein the AC220V power supply input is connected to the power supply, the power supply is connected to the control main board and the LED module, the control main board and the LED module are powered by the power supply to work, the AC220V signal input 1, the AC220V signal input 2 and the AC220V dimming signal input are connected to the control main board, the control main board is connected to the LED module, and the burning interface is connected to the control main board. When AC220V dimming signal input has electricity, control mainboard control shows the program and shows low luminance, and when AC220V dimming signal input does not have electricity, control mainboard control shows the program and shows normal luminance, realizes that the changeable lane sign of this LED module can change sign dimming function according to AC220V dimming signal input. When a plurality of signs are used together, the AC220V dimming signals are input and connected together, the AC220V dimming signals of the signs are input uniformly, and the synchronous dimming function of the product is realized. The changeable traffic information in lane can be instructed to this LED module variable lane sign, realizes the function of this LED module variable lane sign.
The control main board comprises an AC220 input P1, an AC-to-DC power supply U1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, an optical coupler U2, an optical coupler U3, an optical coupler U5, a single chip microcomputer U4, a load direct-current power supply output P2, an LED module control output P3 and a burning port P4;
referring to fig. 2, an external alternating current is connected to an AC220 input P1, electricity is connected to an input L pin and an input N pin of an AC-to-DC power supply U1 through a pin 1 and a pin 5 of an AC220 input P1, wherein the pin 5 of the P1 is a common pin N, the AC-to-DC power supply U1 is powered on to output direct current from VDD and GND pins to supply to a single chip microcomputer U4 and an LED module control output P3, the single chip microcomputer U4 is powered on to operate, one end of a resistor R3 is connected to VDD, the other end of the resistor R3 is connected to a pin Rin of an output end of an optical coupler U2 to realize a pull-up function of a resistor R3, the other pin of an output end of an optical coupler U2 is connected to GND, a signal at an input end of an optical coupler U2 is input from an AC220V signal input 1 through a pin 2 of an AC220 input P1, the signal enters the optical coupler U2 through an input end of the optical coupler U2, and then passes through the common pin 5 of the P1 to form a loop, when the AC220 signal input 1 is powered on, an input end of the optical coupler 2 is connected to realize a low level, and the pin Rin is shown as GND, on the contrary, when the AC220V signal input 1 is not powered, the input end of the optical coupler U2 is not turned on, the output end of the optical coupler U2 is not turned on, the pin Rin is pulled up to VDD by the resistor R3, so that the pin Rin is represented as a high level at the moment, when the AC220V signal input 1 is powered, the pin Rin is controlled to be a low level, and when the AC220V signal input 1 is not powered, the pin Rin is controlled to be a high level. Similarly, when the AC220V signal input 2 is electrified, the voltage passes through the pin 3 of the P1, the resistor R2 and the optocoupler U3 to control the pin Gin to be low level, and when the voltage does not exist, the pin Gin is pulled up to be high level by the resistor R4; the dimming signal input of the AC220V passes through a pin 4 of a P1, a resistor R6, an optocoupler U5 and a public 5 pin of the P1 to form a loop, when the dimming signal input of the AC220V is electrified, the optocoupler U5 conducts a control pin Dim to be at a low level, and when the dimming signal input of the AC220V is not electrified, the pin Dim is pulled up to be at a high level by the resistor R5.
After the singlechip U4 works, the signal output conditions of the AC220V signal input 1 and the AC220V signal input 2 are judged according to Rin on a pin 7 and Gin level signals on a pin 8, when the pin Rin is at a low level, the AC220V signal input 1 is electrically input, and when the pin Gin is at a low level, the AC220V signal input 2 is electrically input. The singlechip U4 is controlled by a plurality of pins to output to an LED module control output P3, wherein A, B, C, D is a scanning row selection signal, R1, R2, G1, G2, B1 and B2 are respectively red, green and blue data serial inputs, STB is a data latch signal, CK is a serial data clock signal, OE is a display enable signal, the singlechip U4 displays a program 1 according to the condition that only Rin is low level, displays a black screen according to other combinations of the program 2, Rin and Gin when only Gin is low level, when the program 1 needs to be displayed, the singlechip U4 firstly controls the OE enable pin to be low level to disable display, then controls the STB to be high level to realize latch information, then A, B, C, D selects the scanning row signal, then transmits program content data through the R1, R2, G1, G2, B1, B2 and CK, after transmission is finished, the STB is controlled to be low level and then controls the STB to be high level to realize the latch the data just transmitted, then, controlling OE to be high level to start displaying the program, so that 1 frame of program information of the program 1 is displayed on the LED module, and similarly, transmitting data all the time, and displaying the content of the program 1 all the time; similarly, the program 2 and the program 1 are displayed and the black screen adopts the same method, so that the singlechip U4 controls the display of the program content.
In summary, according to the level of the Dim pin and the duty ratio of the OE pin of the control output P3, when the AC220V dimming signal is input with power, the Dim pin is at low level, the control main board controls a certain proportion, for example, one tenth, of the OE pin of the output P3 when the OE pin is relatively fully bright, so as to reduce the brightness of the display output, when the AC220V dimming signal is input without power, the Dim pin is at high level, the control main board controls the OE pin of the output P3 to be consistent with the OE pin when the OE pin is relatively fully bright, so as to control the main board to control fully bright output through the output P3, so as to achieve the dimming output function of the product, and meanwhile, the AC220V dimming signal input signals of multiple signs are connected in parallel and controlled by one control signal, so as to achieve the synchronous dimming function of the product.
The contents of the program 1, the program 2 and the black screen are set by the firmware contents of the single chip microcomputer U4, when different display contents are needed, only the firmware of the single chip microcomputer U4 needs to be changed, and hardware does not need to be replaced.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (3)
1. A lane-changeable sign synchronous dimming system based on an LED module comprises an external AC220V power supply input, a power supply, a control main board, the LED module, an AC220V signal input 1, an AC220V signal input 2, an AC220V dimming signal input and a burning interface, and is characterized in that the AC220V power supply input is connected to the power supply and then connected to the control main board and the LED module, the AC220V signal input 1, the AC220V signal input 2 and the AC220V dimming signal input are connected to the control main board, the control main board is connected to the LED module again, and the burning interface is connected to the control main board.
2. The LED module based synchronous dimming system for lane-changing signage system of claim 1, wherein the control main board controls the display program to display low brightness when the AC220V dimming signal is inputted with power, and controls the display program to display normal brightness when the AC220V dimming signal is inputted with no power.
3. The LED module based variable lane sign synchronous dimming system of claim 1, wherein the control main board comprises an AC220 input P1, an AC-to-DC power supply U1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, an optocoupler U2, an optocoupler U3, an optocoupler U5, a singlechip U4, a load DC power supply output P2, an LED module control output P3, and a burning port P4;
an external alternating current is connected to an AC220 input P1, electricity is connected to an input L pin and an input N pin of an AC-to-DC power supply U1 through a pin 1 and a pin 5 of the AC220 input P1, wherein the pin 5 of the P1 is a common N pin, the AC-to-DC power supply U1 is electrified to work, direct current is output from VDD and GND pins to supply to a singlechip U4 and an LED module to control and output P3, the singlechip U4 is electrified to work, one end of a resistor R3 is connected to VDD, the other end of the resistor R3 is connected to a pin Rin at the output end of an optocoupler U2 to realize the pull-up function of a resistor R3, the other pin at the output end of the optocoupler U2 is connected to GND, a signal at the input end of the optocoupler U2 is input into a pin 2 of the P1 through an AC220 signal input 1, the input end of the optocoupler U2 is connected to the optocoupler U2 through the input end, the common pin 5 of the P1 to form a loop, when the AC220V signal input 1 is electrified, the input end of the optocoupler is connected, the U2 is connected with the output end of the optocoupler, the U2 is connected to realize the Rin to realize the low level of the low level GND, on the contrary, when the AC220V signal input 1 is not electrified, the input end of the optical coupler U2 is not conducted, the output end of the optical coupler U2 is not conducted, the pin Rin is pulled up to VDD by the resistor R3, the pin Rin is shown as a high level at the moment, when the AC220V signal input 1 is electrified, the pin Rin is controlled to be a low level, and when the AC220V signal input 1 is not electrified, the pin Rin is controlled to be a high level; similarly, when the AC220V signal input 2 is electrified, the voltage passes through the pin 3 of the P1, the resistor R2 and the optocoupler U3 to control the pin Gin to be low level, and when the voltage does not exist, the pin Gin is pulled up to be high level by the resistor R4; the dimming signal input of the AC220V passes through a pin 4 of a P1, a resistor R6, an optocoupler U5 and a public 5 pin of the P1 to form a loop, when the dimming signal input of the AC220V is electrified, the optocoupler U5 conducts a control pin Dim to be at a low level, and when the dimming signal input of the AC220V is not electrified, the pin Dim is pulled up to be at a high level by the resistor R5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122145719.2U CN215933163U (en) | 2021-09-06 | 2021-09-06 | Variable lane sign synchronous dimming system based on LED module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122145719.2U CN215933163U (en) | 2021-09-06 | 2021-09-06 | Variable lane sign synchronous dimming system based on LED module |
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| Publication Number | Publication Date |
|---|---|
| CN215933163U true CN215933163U (en) | 2022-03-01 |
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| CN202122145719.2U Active CN215933163U (en) | 2021-09-06 | 2021-09-06 | Variable lane sign synchronous dimming system based on LED module |
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- 2021-09-06 CN CN202122145719.2U patent/CN215933163U/en active Active
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