Wide-area off-line illumination joint control system and method
By integrating an independent control circuit and a reset data line into each LED light for synchronous startup, the problems of signal delay and high cost in outdoor LED lighting control systems are solved, achieving unified and flexible display of overall lighting effects and reducing construction difficulty and cost.
Patent Information
- Application Number
- CN202511517333.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-23
- Publication Date
- 2026-01-23
AI Technical Summary
In existing outdoor LED lighting control systems, excessively long lead wires cause signal distortion and delay, resulting in inconsistent lighting effects in certain areas. This increases the number of controllers and construction costs, and affects the overall aesthetics and reliability.
Each LED has an independent built-in control circuit, including a clock source, frequency divider, and electrically erasable memory. Synchronous startup and parameter setting are achieved through a reset data line. Each LED independently executes a brightness or color change sequence without the need for external real-time control signals.
It achieves unified and synchronized overall lighting effects, reduces the number of controllers and construction complexity, reduces costs, improves system reliability and aesthetics, and provides flexible lighting display mode selection.
Smart Images
Figure CN121397828A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to an outdoor LED lighting control technology, in particular to a wide-area off-line lighting joint control system and method. BACKGROUND
[0002] The outdoor LED lighting intelligent color lamp controller is a device for controlling the brightness, color and flickering mode of color lamps. There are two common types based on ordinary circuit and single-chip microcomputer technology. The principle of the ordinary circuit controller is as follows: Taking a typical LED color lamp controller circuit as an example, it mainly consists of a power supply circuit, a self-oscillating multivibrator, a counting frequency divider circuit and an LED driving circuit.
[0003] The power supply circuit consists of a power switch, a power transformer, a rectifier diode, a filter capacitor and a three-terminal voltage regulator integrated circuit. After turning on the power switch, the AC 220V voltage is reduced by the transformer, rectified by the diode, filtered by the capacitor and stabilized by the voltage regulator integrated circuit, producing a suitable DC voltage (such as 24V) to power the self-oscillating multivibrator, the counting frequency divider and the LED driving circuit.
[0004] The self-oscillating multivibrator consists of a NOT gate inside a NOT gate integrated circuit and resistors and capacitors. After power-on, it can provide counting pulses for the counting frequency divider circuit.
[0005] The counting frequency divider circuit generally uses a decimal counter / pulse distributor integrated circuit. Under the action of the counting pulses, its output will sequentially output high level.
[0006] The LED driving circuit consists of resistors, transistors and light-emitting diodes. The high level of the output end of the counting frequency divider makes the corresponding transistor conductive, thereby driving the respective LED color lamps to turn on and off in turn, producing various light effects. For example, after the counting frequency divider is powered on and reset, a certain end first outputs a high level, making the corresponding transistor conductive, and some LED color lamps light up; when another output end outputs a high level, the corresponding another group of transistors are conductive, the previous color lamps are extinguished, and another group of color lamps light up, and so on.
[0007] Principle of single-chip microcomputer controller The single-chip microcomputer color lamp controller is an electronic device based on single-chip microcomputer technology, consisting of a single-chip microcomputer, a driving circuit, a power module and a communication interface.
[0008] Signal reception and processing: using the internal program of the single-chip microcomputer and the peripheral circuit, the control signals or data from the outside are received. These signals can be transmitted through communication interfaces (such as serial ports, wireless communication, etc.), such as the user can send control instructions through the mobile phone APP.
[0009] Program execution: the single-chip microcomputer processes the received signal according to the preset program, and realizes different color light control algorithms, such as controlling the on-off time of color light, color change sequence, etc.
[0010] The on-off time of the color light and the color change sequence are controlled by 4-line output, wherein 3 lines or 2 lines are address lines, 2 lines realize four-lamp one cycle, 3 lines are 8-lamp cycle, and the other 1 line or 2 lines realize brightness control.
[0011] When the number of lamps is large, 8 lamps need a controller according to the 8-lamp cycle, and all the controllers are connected by a bus to a total control system to form a complete control system.
[0012] When the area of outdoor LED lightening lamp is very large, the branch controller is also very large, and the lead line is very long, so the existing LED lightening lamp control technology often has the problem that the light in the local area does not light up, and the light that should not light up will light up, which seriously affects the effect of the entire LED lightening lamp.
[0013] The above problems are caused by the fact that in the above principle, each outdoor LED works according to the preset program when receiving the signal sent by the real-time controller, and the signal distortion caused by the distribution capacitance of the long lead line causes the signal to be wide or delayed, which causes the effect not to work according to the ideal process.
[0014] As shown in Figure 2 , the existing light control system has high cost and complex process, and 3000 lamps need 375 controllers according to 8 lamps per controller.
[0015] The controller lead line adopts a 6-line structure, which has high cost, so the cost of a lightening project is very high, several million to several ten million. SUMMARY
[0016] The purpose of the present application is to provide a wide-area off-line lighting joint control system and method with high system reliability, unified display, no disorder of LED lamp address and data no matter what structure wiring, simple process, low cost, and the ability to realize complex change process.
[0017] The technical scheme of the present application is: a wide-area off-line lighting joint control system, comprising a plurality of outdoor LED lightening lamps distributed as a whole according to design requirements, characterized in that: each of the outdoor LED lightening lamps is internally provided with an independent control circuit, and the control circuit comprises a clock source, a frequency divider, an electrically erasable memory and a driving circuit. The electrically erasable memory pre-stores display parameters; The system further comprises a reset data line for providing a synchronous starting signal to all outdoor LED lightening lamps; Each of the control circuits is configured to independently execute a brightness or color change sequence defined by the display parameters based on the clock signal provided by the clock source and the synchronization time interval generated by the frequency divider after receiving the synchronization start signal through the reset data line, so that all outdoor LED lightening lamps synchronously display a preset overall process pattern without an external real-time control signal.
[0018] The clock source is a 32.768 KHz crystal oscillator or an internal RC oscillation circuit designed based on the frequency.
[0019] The reset data line is a single wire, and the reset data line realizes writing of the display parameter data pre-stored in the electrically erasable memory and transmission of the synchronization signal.
[0020] Each of the outdoor LED lightening lamps has a unique coding address, and the system is configured to perform read and write operations of the display parameters in the electrically erasable memory on the outdoor LED lightening lamps with the specified coding address through the reset data line.
[0021] The display parameters include at least one of the following: a large cycle time length (T); a small cycle number (N); a small cycle time length (t); a small cycle display order type (LX); a small cycle display type time length (XSC); a small cycle cycle number; a delay time (T2); and a working time (T1).
[0022] The small cycle display order type (LX) is stored by one byte and corresponds to a predefined display order lookup table, and supports up to 256 display modes.
[0023] The control circuit is configured to execute one large cycle or sequentially execute N small cycles, each of which has an independent display order type and / or cycle number.
[0024] The control circuit is configured to, after synchronization start, first read the display parameters in the electrically erasable memory, and work according to the display parameters of each outdoor LED lightening lamp until the working time (T1) ends; and then restart a new cycle.
[0025] The plurality of outdoor LED lightening lamps are set to have the same large cycle time length (T) but different small cycle display order types (LX) and / or different delay times (T2) to form a dynamic marquee, a wave-shaped scanning, or a pattern gradual change effect.
[0026] The plurality of outdoor LED brightening lamps are arranged into a character, a figure or a trademark contour, and by setting different delay time (T2) and working time (T1), the stroke-by-stroke lighting, extinguishing or color rolling display effect of the character, figure or trademark is realized.
[0027] The outdoor LED brightening lamp is made into a lamp strip structure, the control circuit, the power line 3 and the reset data line are integrated inside the lamp strip structure, and no additional signal connecting line is needed between each outdoor LED brightening lamp inside the lamp strip.
[0028] A method of a wide-area off-line lighting joint control system, characterized in that the method comprises the following steps: (1) a presetting step: writing the corresponding display parameters into the electrically erasable memory of the control circuit of each outdoor LED brightening lamp; (2) a synchronizing step: sending a synchronous starting signal to all outdoor LED brightening lamps through the reset data line or through the power-on synchronization; (3) an executing step: after receiving the synchronous starting signal, each control circuit independently executes the brightness or color change sequence defined by the display parameters based on the internal clock source and the frequency-divided synchronous time interval; (4) a display step: all outdoor LED brightening lamps synchronously display the preset overall process pattern without external real-time control signals.
[0029] In the presetting step, the display parameters of each outdoor LED brightening lamp with a unique coding address are written or modified in turn through a single reset data line using a current loop communication mode.
[0030] The display parameters further include delay time (T2) and working time (T1), and the method enables a group of outdoor LED brightening lamps to start and work in turn according to the preset delay time (T2), forming a continuous dynamic light effect.
[0031] The advantage of the present application is that each outdoor LED brightening lamp distributed as a whole according to design requirements displays a process pattern according to its own position, and the process pattern is completed according to the time sequence set in advance in the control circuit of each outdoor LED brightening lamp, without being controlled by an external controller. Figure 1 In the prior art, every 8 lamps need a controller, all controllers are connected to the total controller through a bus, and work under the control of the total controller, and during work, the changing control signals are prone to electromagnetic coupling, interference, confusion in overall display and influence on overall aesthetics.
[0032] The reset line or the data line in the application is seldom used, and is in high level or low level state without alternating current process signal, so that electromagnetic coupling is not generated to form interference.
[0033] In addition, since there is no address signal line, three signal leads and branch controllers are reduced, construction is simpler, maintenance is convenient, a large amount of cost is reduced, and reliability is ensured.
[0034] The application can provide infinite design forms for outdoor brightening and completely change the selection of monotonous forms of the existing outdoor brightening, since each lamp has independent coding and is independently controlled, and the content of the register is changed to realize multi-mode selection of color and multi-mode selection of display form.
[0035] The application can provide more convenient conditions for installation and graphic layout of outdoor brightening, since each lamp has independent coding and is independently controlled, and the entire outdoor LED brightening lamp is distributed according to design requirements, and the connection line between the lamps is not required, so that the cost is low, construction is convenient, a large amount of cost and construction time can be saved.
[0036] The application will be further described below in combination with embodiments and the drawings. BRIEF DESCRIPTION OF DRAWINGS
[0037] Figure 1 It is a circuit principle diagram of the existing control system; Figure 2 It is a circuit principle diagram of the control system of the embodiment of the application; Figure 3 It is an application description diagram of the embodiment 4 of the application.
[0038] In the drawing, 1 is an outdoor LED brightening lamp, 2 is a control circuit, 3 is a power line, 4 is a reset data line, 5 is an interface between the lamps, and 6 is each outdoor LED brightening lamp in overall distribution. DETAILED DESCRIPTION Embodiment
[0039] As a simple example for illustrating the principle of the application, Table 1 gives an example that 7 colors of an outdoor LED brightening lamp are displayed in positive order for 3 cycles and in reverse order for 3 cycles, and the cycle time of the small cycle is T1=T2, each small cycle is 10 seconds, each color is 1.25 seconds, and 6 small cycles constitute a large cycle of 60 seconds.
[0040] Here are several parameters: the time length of the large cycle; the number of small cycles, the time length of each small cycle, the display order type of the small cycle, the time length of the display type of the small cycle, and each small cycle display type to define different form patterns.
[0041]
[0042] Table 1 Let T define the length of the macrocycle, for the above example T = 3*T1+3*T2=60 seconds.
[0043] Here the length of the macrocycle = 60 seconds.
[0044] Let N1 represent the number of first microcycle cycles; Let N2 represent the number of second microcycle cycles.
[0045] For example 1, N1=N2=3.
[0046] Here the number of microcycle cycles is 2 Let TN represent the length of the microcycle, T1 represent the length of the first microcycle, and T2 represent the length of the second microcycle, for the above example T1=T2=10 seconds.
[0047] For example 1, the display order CX of the N1 microcycles is: red orange yellow green blue violet, The display order type of the N2 microcycles is: the reverse of red orange yellow green blue violet.
[0048] The display type length XSC of the microcycles, the display type length XSC1 of the N1 microcycles is: 1.43 seconds, and the display type length XSC2 of the N2 microcycles is: 1.43 seconds. Example
[0049] As another simple example to illustrate the principles of the present application, Table 2 gives an example of an outdoor LED light show using 8 colors in a forward order for 3 cycles, and in a reverse order for 3 cycles, the macrocycle time period T = 3*T1+3*T2, T1=T2, 10 seconds per microcycle, 1.25 seconds per color, 6 microcycles per macrocycle, for a total of 60 seconds.
[0050] Again there are several parameters: the length of the macrocycle; the number of microcycles, the length of each microcycle, the display order type of the microcycles, the display type length of the microcycles, and the display type of each microcycle to define different patterns.
[0051] Table 2 Let T define the length of the macrocycle, for the above example T = 3*T1+3*T2=60 seconds.
[0052] Here the length of the macrocycle = 60 seconds.
[0053] Let N1 represent the number of first microcycle cycles; Let N2 represent the number of second microcycle cycles.
[0054] For example 1, N1=N2=3.
[0055] Here, the number of small cycle times is 2 Let TN represent the small cycle time, T1 represent the first small cycle time, and T2 represent the second small cycle time. For the above example, T1=T2=10 seconds.
[0056] For example 2, the display order type of N1 small cycle is: red orange yellow green cyan blue purple white, The display order type of N2 small cycle is: reverse of red orange yellow green cyan blue purple white.
[0057] The display type time of small cycle XSC, the display type time of N1 small cycle XSC1 is: 1.25 seconds, and the display type time of N2 small cycle XSC2 is: 1.25 seconds. Example
[0058] As a third example of the principles of the present application, Table 3 provides an example of 9 colors displayed in a forward order for 3 cycles and in a reverse order for 3 cycles for an outdoor LED light, with the small cycle time T1=T2, 10 seconds for each small cycle, 1.1 seconds for each color, and 6 small cycles constituting a large cycle of 60 seconds.
[0059] Here, there are several parameters: the large cycle time; the number of small cycles, the time of each small cycle, the display order type of small cycle, the display type time of small cycle, and the display type of each small cycle to define different forms of patterns.
[0060]
[0061] Table 3 Let T represent the large cycle time. For the above example, T=3*T1+3*T2=60 seconds.
[0062] Here, the large cycle time=60 seconds.
[0063] Let N1 represent the number of first small cycle times; Let N2 represent the number of second small cycle times.
[0064] For example 1, N1=N2=3.
[0065] Here, the number of small cycle times is 2 Let TN represent the small cycle time, T1 represent the first small cycle time, and T2 represent the second small cycle time. For the above example, T1=T2=10 seconds.
[0066] For example 3, the display order type of N1 small cycle is: red orange yellow green cyan blue purple white black (black is off), The display order type of the small cycle N2 is: red, orange, yellow, green, cyan, blue, purple, white, black, and reverse.
[0067] The small cycle display type time length XSC, the small cycle display type time length XSC1 of N1 is: 1.25 seconds, and the small cycle N2 display type time length XSC2 of various colors is: 1.1 seconds.
[0068] The parameters in the above three embodiments can be stored in a plurality of electrically erasable memories, and modified through a program.
[0069] The large cycle time length is represented by T, and the size is two bytes. A 32.768KHz crystal oscillator generates a 0.1 second timing clock through frequency division, and the maximum large cycle of two bytes is greater than 1 hour.
[0070] The small cycle number is represented by N, and the size is one byte. The maximum small cycle number is 256, and the actual number is less than 10 small cycles.
[0071] The small cycle time length is represented by small t, and the size is one byte. A 32.768KHz crystal oscillator generates a 0.1 second timing clock through frequency division, and the maximum small cycle time length is 25 seconds. A 0.2 second timing clock is used, and the maximum small cycle time length is 50 seconds.
[0072] The small cycle display order type is selected by one byte. In principle, there can be 256 possibilities, which are represented by LX. In the above embodiment 1, 111 is used; in embodiment 2, 1000 is used; in embodiment 3, 1001 is used. In principle, the small cycle display order type is given by one table, and there are 256 selectable types.
[0073] The small cycle display type time length XSSC is one byte. A 32.768KHz crystal oscillator generates a 0.1 second timing clock through frequency division, and the maximum small cycle time length is 25 seconds. A 0.2 second timing clock is used, and the maximum time length is 50 seconds.
[0074] In the present application, the small cycle display type time length is represented by multiple bytes, which can be different for each color in the small cycle display order type sequence, such as the display time of red, orange, yellow, green, cyan, blue, purple, white, and black. One byte is stored for each color, and the maximum is not greater than 256. As can be seen from the description of the above three embodiments, as long as the data of the large cycle time length storage, the small cycle number storage, the small cycle time length storage, the small cycle display order type storage, and the small cycle display type time length storage defined by the electrically erasable storage are modified through the interface, the overall distribution of the outdoor LED lightening lamp effect can be changed at any time.
[0075] The control circuit 2 in the outdoor LED brightening lamp 1 comprises an electrically erasable memory which can be modified by program, and the display color and display time of each outdoor LED brightening lamp can be redefined by inputting address and password.
[0076] Further, the clock of the present application can use 32.768KHz crystal oscillator, or use 32.768KHz RC clock. When the design error of the 32.768KHz RC clock cannot meet the requirement in the specified time, the reset signal generated on the reset line is used to reset the time sequence, so as to eliminate the accumulated error caused by long time.
[0077] The reset time is selected at the end of a large period T, and the reset signal generated on the reset line is provided to an I / O port of the controller.
[0078] The reset line is used to modify the data of the large period memory, the small period number memory, the small period time memory, the small period display order type memory and the small period display type time memory. Each outdoor LED brightening lamp can access the above-mentioned registers by address.
[0079] The writing of the data of the above-mentioned memories can use two lines or one line. The reduction of one line is very important for the whole brightening project, which reduces the cost and improves the reliability, because there is no influence of the cross distribution capacitor between the signal lines.
[0080] The single line is used to complete the reset and data writing. In order to improve the reliability, the current loop circuit is used to improve the data security in long distance. The current loop circuit is a common circuit, and thus it is not described in the present application.
[0081] Each outdoor LED brightening lamp can access the above-mentioned registers by address. The address is unique for each outdoor LED brightening lamp, or is given by multiple bytes, date, month, day and code number. The code number is given by 100,000 capacity.
[0082] The convenience and progress of the present application in the brightening control are further described by several examples. Embodiment
[0083] As shown in Figure 2 and Figure 3 , the control system circuit schematic diagram of an embodiment is shown in Figure 2 , and the principle diagram of the embodiment of the present application with the same display effect as the most simple structure of the prior control system is shown in Figure 3 .
[0084] The present invention relates to a kind of wide-area off-line lighting joint control system, including, each outdoor LED brightening lamp 6 according to design requirement overall distribution, each outdoor LED brightening lamp 6 overall distribution is according to the periodic display process pattern, the periodic display process pattern is according to the program in the control circuit 2 in outdoor LED brightening lamp 1 according to time sequence is completed, the program in the control circuit 2 includes the parameter information in the storage unit is called;Each outdoor LED brightening lamp 6 overall distribution resets the synchronous start after the reset port 201, according to the parameter information of storage unit, the brightness or color periodic display change in cycle.
[0085] The storage unit includes: 1) large cycle length storage unit;With T represents, size is two bytes, 32.768KHz crystal oscillator is generated 0.1 second clock by frequency division, two bytes maximum cycle is greater than 1 hour.
[0086] 2) small cycle number storage unit, with N represents, size is one byte, the maximum small cycle number 256, actual less than 10 small cycles.
[0087] 3) small cycle length storage unit, with small t represents, size is one byte, 32.768KHz crystal oscillator is generated 0.1 second clock by frequency division, the maximum small cycle length 25 seconds, with 0.2 second clock, the maximum small cycle length 50 seconds.
[0088] 4) small cycle display order type storage unit, with one byte for selection, in principle, there can be 256 possible, with LX represents, such as the embodiment 1 of the above uses 1000 to represent;Embodiment 2 uses 1111 to represent;Embodiment 3 uses 11000 to represent;In principle, small cycle display order type is given with a table, there are 256 selectable types.
[0089] 5) small cycle display type length storage unit, XSSC, with one byte, 32.768KHz crystal oscillator is generated 0.1 second clock by frequency division, the maximum small cycle length 25 seconds, with 0.2 second clock, the maximum length 50 seconds.
[0090] 6) the first small cycle display order type cycle number; 7) the Nth small cycle display order type cycle number; 8) encoding address storage unit: with 6 bytes.
[0091] Embodiment 1 uses 8 lamps to do a running light, 8 lamps have a control circuit 2 respectively, the control circuit 2 has electric erasable storage, the electric erasable storage defines the storage unit described above.
[0092] Suppose the address of 8 lamps is binary 000-111 respectively, For the code 000 lamp.
[0093] The storage unit of the long cycle time length stores the number 10 minutes, and the count value is 6000 in hexadecimal notation 3e8H, occupying two bytes. The storage unit of the small cycle number stores the number 1 in hexadecimal notation. When the small cycle number is 1, the small cycle is actually equal to the long cycle of 10 minutes. The storage unit of the small cycle time length stores the number 1.428 seconds, which is equal to the long cycle time length when the small cycle number is 1. The small cycle time length is represented in hexadecimal notation as 3e8H. The storage unit of the small cycle display order type stores the code 111, which represents the cycle of red, orange, yellow, green, blue, and purple. Each color starts from the reset, and the red color works for 1.428 seconds, followed by the orange color working for 1.428 seconds, and so on until the purple color working for 1.428 seconds, completing a cycle and then starting a new cycle with the red color.
[0094] For the code 001 lamp.
[0095] The storage unit of the long cycle time length stores the number 10 minutes, and the count value is 6000 in hexadecimal notation 3e8H, occupying two bytes. The storage unit of the small cycle number stores the number 1 in hexadecimal notation. When the small cycle number is 1, the small cycle is actually equal to the long cycle of 10 minutes. The storage unit of the small cycle time length stores the number 1.428 seconds, which is equal to the long cycle time length when the small cycle number is 1. The small cycle time length is represented in hexadecimal notation as 3e8H. The storage unit of the small cycle display order type stores the code 1000, which represents the cycle of orange, yellow, green, blue, purple, and red. Each color starts from the reset, and the orange color works for 1.428 seconds, followed by the yellow color working for 1.428 seconds, and so on until the red color working for 1.428 seconds, completing a cycle and then starting a new cycle with the orange color.
[0096] The code is 010, and after resetting, the cycle of orange, yellow, green, blue, purple, and red is performed, The code is 011, and after resetting, the cycle of yellow, green, blue, purple, red, and orange is performed, The code is 100, and after resetting, the cycle of green, blue, purple, red, orange, and yellow is performed, The code is 101, and after resetting, the cycle of blue, purple, red, orange, yellow, and green is performed, The code is 110, and after resetting, the cycle of purple, red, orange, yellow, green, and blue is performed, The code is 111, and after resetting, the cycle of red, orange, yellow, green, blue, and purple is performed, The new cycle is started from the end of the code 111.
[0097] The color of each lamp is cycled in turn after reset.
[0098] The register of the 8 lamps in the above embodiment 1 only has a small cycle display order type difference.
[0099] In this way, the small cycle display order type storage unit can also be 01111 and 11000. Embodiment
[0100] In embodiment 2, the small cycle number storage unit N is 2, the first small cycle type is the same as that in embodiment 1, the first small cycle display order type is red, orange, yellow, green, blue, and purple, and the second small cycle display order type is purple, blue, green, yellow, orange, and red, which is opposite to the order in embodiment 1 and has the same content, and the two small cycles have a cycle time of 5 times and 3 times, respectively, for a total of 8 times, so the large cycle time is 5*T1+3*T2.
[0101] In embodiment 2, since the small cycle display order type is 2, two small cycle display type storage units are added, and at the same time, two small cycle display type duration storage units are also added, and the first small cycle display order type cycle number is 5 and the second small cycle display order type cycle number is 3.
[0102] When the small cycle display order type is N, the large cycle time is 1, N small cycle display type storage units and N small cycle display type duration storage units are added. Embodiment
[0103] An embodiment of a brand name advertisement is given The advertisement word is as shown in 10.
[0104] If the design requirement is that the overall distribution of the "wide-area offline lighting control system" 10 LED lighting lamps 1 are operated as follows, with white as the main color and red and green as the interval transition, The timing is: white display for 10 minutes, then enter 3 minutes of red, green, and blue switching transition; then re-enter white display for 10 minutes.
[0105] Therefore, its large cycle duration is 13 minutes, with two small cycles, the first small cycle being 10 minutes and the second small cycle being 3 minutes; The first small cycle display type is white, and the second small cycle is 3 minutes of red, green, and blue scrolling switching 3 times, with 3 minutes of each color of red, green, and blue. Embodiment
[0106] Further, the present application also includes a delay storage unit, through which the display and stop intermittent cycle process can be realized.
[0107] As Figure 3 shown, we illustrate the use of delay storage unit by the following examples.
[0108] In this embodiment, the code of 8 outdoor LED lighting lamps 1 is 000, 001, 010, 011, 100, 101, 110, 111, respectively, 8 outdoor LED lighting lamps 1 each control circuit 2 in the reset port reset synchronization start, Start timing clock, call the delay time T2 of the delay storage unit; The delay time of the code 000, 001, 010, 011, 100, 101, 110, 111 is 0 minutes, 1 minute, 2 minutes, 3 minutes, 4 minutes, 5 minutes, 6 minutes, 7 minutes, respectively.
[0109] The delay time T2 of the outdoor LED lighting lamp 1 with code 000 is 0, and the timing clock is started. The delay time T2 of the delay storage unit is called, and the delay time T2 is 0; The working time T1 of the working time storage unit is called, the outdoor LED lighting lamp 1 is started, the display mode of the display mode storage unit is called, and the display mode is displayed with the parameters specified by the display mode until the working time T1 ends.
[0110] The delay time of the outdoor LED lighting lamp 1 with code 001 is 1 minute, and the timing clock is started. The delay time T2 of the delay storage unit is called, and the delay time T2 is 1 minute; The 0.1 second timer provided by the frequency divider starts to work, the working time T1 of the working time storage unit is called, the outdoor LED lighting lamp 1 is started, the display mode of the display mode storage unit is called, and the display mode is displayed with the parameters specified by the display mode until the working time T1 ends; When the delay time T2 is not 0, the delay time T2 is started until the T2 delay time ends, and the outdoor LED lighting lamp 1 is started to work; When the working time T1 ends, the T of the working cycle unit is called, and the end of the T of the working cycle unit is waited. The T of the working cycle unit is timed to end, and a new round of working cycle unit T is restarted. The above process is repeated.
[0111] The application is characterized in that the period display process pattern is started to work after the starting synchronization time according to the time sequence requirement by the control circuit 2 pre-set in each outdoor LED brightening lamp 6, the control circuit 2 in each outdoor LED brightening lamp 6 respectively completes the brightness or color period change in each period by program control, and the outdoor LED brightening lamps 6 form the whole process pattern display in the period according to the design requirement. The program control of each outdoor LED brightening lamp 6 to complete the brightness or color period change in a period is completed by the program of the control circuit 2 in the lamp without external control after the unified starting time. The program control of each outdoor LED brightening lamp 6 to complete the brightness or color period change in a period is completed by the program of the control circuit 2 in the lamp without external control after the unified starting time. The working clock frequency of the control circuit 2 is provided by the crystal oscillator circuit or RC circuit or built-in RC circuit connected to the control circuit 2, and the control circuit 2 divides the working clock frequency into time intervals by setting the frequency division, and the control circuit 2 completes the period cycle display of each outdoor LED brightening lamp 6 according to the design requirement by the time interval.
[0112] The working clock frequency of the application is 32.768K crystal oscillator or internal RC circuit designed according to the frequency of 32.768K, and the 32.768K crystal oscillator or the clock with the frequency of 32.768K in the control circuit of each outdoor LED brightening lamp 6 provides the time interval for synchronization, and the lower the clock frequency, the higher the frequency division accuracy.
[0113] If the frequency error is ±10 / 100 million*32.768KHz=±0.32768Hz, the time error per second is 0.32768Hz / 32768Hz=0.00001 seconds, and the time error per day is 0.00001*60*60*24=0.864 seconds.
[0114] For the 32.768K crystal oscillator with an accuracy of ±20PPM, the frequency difference is ±0.32768Hz*2, and the time error per day is 0.864*2=1.728 seconds.
[0115] The working time of the outdoor LED brightening lamp 1 is generally not more than 6 hours, after starting at the same time, according to the 32.768K crystal oscillator with an accuracy of ±20PPM, the time error is 0.864x2=1.728 seconds per day. 24 hours divided by 4 is 6 hours, 1.728 seconds divided by 4 is 0.432 seconds, in the alternating process of the outdoor LED brightening lamp 1, the average error of the lamp and the lamp appears 0.432 seconds, which has no effect on the brightening effect. In order to achieve higher accuracy, ±10 / 100 million crystal oscillator is used, and the average error of the lamp and the lamp appears 0.216 seconds.
[0116] According to the design requirements of the overall distribution, the working time of each outdoor LED brightening lamp 6 is the same period of time, according to the position of the outdoor LED brightening lamp 1, the delay working time and the working time are different or the same, and the overall layout pattern is formed.
[0117] The time accuracy of the time interval provided by the working clock of the control circuit is less than 0.5 seconds in visual sense, and the error of each outdoor LED brightening lamp 6 in the overall distribution is less than 0.5 seconds.
[0118] The brightness or color period change in one period of the present application is according to the selection of the display parameters, and the display parameters include the following parameters: Large cycle length (T); Small cycle number (N); Small cycle length (t); Small cycle display order type (LX); Small cycle display type length (XSC); Each small cycle cycle number; Delay time (T2); Working time (T1).
[0119] All outdoor LED brightening lamps 1 and each outdoor LED brightening lamp 6 in the overall distribution of the present application do not need external real-time control signals, such as 38 decoders, and through the clock source 32.768KHz crystal oscillator or internal RC oscillation circuit based on the frequency design to provide a time counting that will not produce 0.4 seconds of synchronization error within a few hours, to complete the synchronization of overall brightening.
[0120] The outdoor LED brightening lamp 1 and each outdoor LED brightening lamp 6 of the overall distribution have a unique coding address, and the system is configured to read and write the display parameters in the electrically erasable memory of the outdoor LED brightening lamp 1 and each outdoor LED brightening lamp 6 of the overall distribution with the specified coding address through the reset data line 4. The reset data line 4 is a single wire, and the reset data line 4 realizes the writing of the pre-stored display parameter data of the electrically erasable memory and the transmission of the synchronization signal, completely solving the problems of asynchronization, confusion and the like caused by the address signal misplacement of the address line distribution capacitor in the existing technology.
[0121] It is emphasized that the key of the present application lies in "wide area" and "joint control". That is, a plurality of independent lamps are synchronized by a high-precision clock and parameterized programmed, and in the absence of real-time communication, the overall unified and complex dynamic pattern display is realized. This is the most essential difference from those that can only realize fixed flashing or simple independent control without coordination with each other.
[0122] The reset of the present application can also be power-on reset, or other remote reset, making it possible for the wide area to be all brightening of a city or a district.
[0123] The outdoor LED brightening lamp 1 and each outdoor LED brightening lamp 6 of the overall distribution have a unique coding address, and the system is configured to read and write the display parameters in the electrically erasable memory of the outdoor LED brightening lamp 1 and each outdoor LED brightening lamp 6 of the overall distribution with the specified coding address through the reset data line 4. The reset data line 4 is a single wire, and the reset data line 4 realizes the writing of the pre-stored display parameter data of the electrically erasable memory and the transmission of the synchronization signal, completely solving the problems of asynchronization, confusion and the like caused by the address signal misplacement of the address line distribution capacitor in the existing technology.
Claims
1. A wide-area offline lighting control system, comprising outdoor LED lighting (1) and multiple outdoor LED lighting (6) distributed as designed, characterized in that: The outdoor LED brightening lamp (1) and each outdoor LED brightening lamp (6) in the overall distribution are internally provided with independent control circuits (2), the control circuit (2) comprises a clock source, a frequency divider, an electrically erasable memory and a driving circuit; the electrically erasable memory pre-stores display parameters; the system further comprises a reset data line (4) for providing a synchronous starting signal to all outdoor LED brightening lamps (1) and each outdoor LED brightening lamp (6) in the overall distribution; wherein each control circuit (2) is configured to: after receiving the synchronous starting signal through the reset data line (4), based on the clock signal provided by the clock source and the synchronous time interval generated by the frequency divider, independently execute the brightness or color change sequence defined by the display parameters; so that all outdoor LED brightening lamps (1) and each outdoor LED brightening lamp (6) in the overall distribution can synchronously display the preset overall process pattern without external real-time control signals.
2. A wide-area off-line lighting control system according to claim 1, wherein, The clock source is a 32.768 KHz crystal oscillator or an internal RC oscillation circuit designed based on this frequency.
3. A wide-area off-line lighting control system according to claim 1, wherein, The reset data line (4) is a single wire, and the reset data line (4) realizes the writing of the pre-stored display parameter data of the electrically erasable memory and the transmission of the synchronous signal.
4. A wide-area off-line lighting control system according to claim 3, wherein, Each outdoor LED brightening lamp (1) and each outdoor LED brightening lamp (6) in the overall distribution has a unique coding address, and the system is configured to perform read-write operations on the display parameters in the electrically erasable memory of the outdoor LED brightening lamp (1) and each outdoor LED brightening lamp (6) in the overall distribution with the specified coding address through the reset data line (4).
5. A wide-area off-line lighting control system according to claim 1, wherein, The display parameters include at least one of: A large cycle duration (T); A small cycle number (N); A small cycle duration (t); A small cycle display order type (LX); A small cycle display type duration (XSC); A small cycle cycle number; A delay time (T2); A working time (T1).
6. A wide-area off-line lighting control system according to claim 5, wherein, The small cycle display order type (LX) is stored by one byte, corresponds to a predefined display order lookup table, and supports up to 256 display modes.
7. A wide-area off-line lighting control system according to claim 5, wherein, The control circuit (2) is configured to: Execute one large cycle, or sequentially execute N small cycles, wherein each small cycle has an independent display order type and / or cycle number.
8. A wide-area off-line lighting control system according to claim 5, wherein, The control circuit (2) is configured to: After synchronization, first read the display parameters in the electrically erasable memory, and work according to the display parameters of each outdoor LED brightening lamp until the working time (T1) ends; Then start a new cycle.
9. A wide-area off-line lighting control system according to claim 1, wherein, A plurality of outdoor LED brightening lamps (1) and each outdoor LED brightening lamp (6) in the overall distribution are set to have the same large cycle duration (T) but different small cycle display order types (LX) and / or different delay times (T2) to form a dynamic marquee, a wave-shaped scanning or a pattern gradual change effect.
10. A wide-area off-line lighting control system according to claim 1, wherein, A plurality of outdoor LED lighting lamps (1) and each outdoor LED lighting lamp (6) distributed in the whole are arranged in the outline of a word, a figure or a trademark, and by setting different delay time (T2) and working time (T1), the word, figure or trademark is realized gradually lit, extinguished or color rolling display effect.
11. The system of claim 1, wherein, The outdoor LED lighting lamp (1) and each outdoor LED lighting lamp (6) distributed in the whole are made into a lamp strip structure, the control circuit (2), the power line (3) and the reset data line (4) are integrated inside the lamp strip structure, and each outdoor LED lighting lamp (1) and each outdoor LED lighting lamp (6) distributed in the whole inside the lamp strip do not need additional signal connection line.
12. A method for controlling a wide-area off-line lighting control system as claimed in claim 1, characterized in that The method comprises the following steps: (1) presetting step: in the electrically erasable memory of the control circuit (2) of each outdoor LED lighting lamp (1) and each outdoor LED lighting lamp (6) distributed in the whole, the corresponding display parameters are written; (2) synchronization step: sending a synchronization start signal to all outdoor LED lighting lamps (1, 6) through the reset data line (4); (3) execution step: after receiving the synchronization start signal, each control circuit (2) independently executes the brightness or color change sequence defined by the display parameters based on the internal clock source and the frequency-divided synchronization time interval; (4) display step: all outdoor LED lighting lamps (1) and each outdoor LED lighting lamp (6) distributed in the whole display the preset overall process pattern synchronously without external real-time control signal.
13. The method of claim 12, wherein the wide-area off-line lighting control system is characterized by, In the presetting step, by using current loop communication mode through a single reset data line (4), the display parameters of each outdoor LED lighting lamp (1) and each outdoor LED lighting lamp (6) distributed in the whole with unique coding address are written or modified in turn.
14. The method of claim 12, wherein the wide-area off-line lighting control system is characterized by, The display parameters include delay time (T2) and working time (T1), and the method makes a group of outdoor LED lighting lamps (1) and each outdoor LED lighting lamp (6) distributed in the whole start and work in turn according to the preset delay time (T2), forming continuous dynamic light effect.