CN102622959B - LED display system - Google Patents
LED display system Download PDFInfo
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- CN102622959B CN102622959B CN201110229113.5A CN201110229113A CN102622959B CN 102622959 B CN102622959 B CN 102622959B CN 201110229113 A CN201110229113 A CN 201110229113A CN 102622959 B CN102622959 B CN 102622959B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/20—Controlling the colour of the light
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/175—Controlling the light source by remote control
- H05B47/19—Controlling the light source by remote control via wireless transmission
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Abstract
The invention relates to an LED display system, which comprises a control panel and a plurality of LED lamps. The LED display system is characterized in that the LED lamps are arranged in a plurality of LED lamp sets, each LED lamp set includes a plurality of LED lamps, one LED lamp in the Nth LED lamp set is in one-to-many radio-frequency communication with the LED lamps in the N+1st LED lamp set, and the control panel is in one-to-many radio-frequency communication with the LED lamps in the first LED lamp set, wherein the N is a natural number. The LED display system has the advantages of wide applicable range, stable performance, convenience in maintenance and the like.
Description
Technical field
The present invention relates to a kind of display system, particularly a kind of LED display system.
Background technology
Along with the popularization of low-carbon energy-saving idea, LED lamp is widely used at lighting field not only, also be widely used in demonstration field, this is mainly attributed to the development properties that LED is good, in urban lighting lighting engineering, the LED ornament lamp of building wall not only can play extraordinary decorative effect, multiple LED lamps or the LED illuminator that can mutually set off and coordinate of multiple LED lamp group formation can also demonstrate different words and pattern simultaneously, can extraordinary advertisement and vision landscaping effect.In order to make each LED lamp can jointly show a complete pattern of composition, need to control each LED or each LED lamp group by a control system, control its duty at any time, comprise light on and off state, the colors of brightness and demonstration etc. (certainly, LED lamp is less, and the pattern resolution that the LED display system that multiple LED lamps splice shows is less).
The method of the control of the LED lamp group to building wall comprises several as follows at present:
1, adopt wired LED control system, as shown in Figure 1, this LED control system is transferred to repeater by signal wire (comprising twisted-pair feeder) by the control signal of PC master control, then repeater is distributed to multiple iversion controllers by this control signal by signal wire (comprising twisted-pair feeder), each iversion controller and the series connection of multiple LED lamp, this iversion controller can convey to any one LED lamp along the LED lamp of series connection by control signal, thereby can control the duty of multiple LED lamps.Although this kind of scheme can be controlled each LED lamp and do any variation, because multiple LED connect, so can cause, as long as LED lamp or iversion controller break down, can causing multiple LED light source cisco unity malfunctions, so its reliability is poor.And very inconvenient in maintenance, because to be difficult to be which LED lamp breaks down to find at short notice, and if increase the quantity of iversion controller, make each point to control a LED lamp, this has not only increased the cost of iversion controller, has also increased wiring cost.
2, in order to solve the problem existing in technique scheme 1, people had found out again another LED control system afterwards, and, at the inner integrated control module of each LED lamp, each LED lamp is subject to connected control module control.Because each LED lamp is subject to independently control module control, the control signal of each LED lamp does not influence each other, so the reliability of this control system is better, but because each control module is not connected with other controllers, so in order to reach the object from main control LED lamp, the burning in advance before project installation of the control program of each control module is good, can not change, although this kind of control method preferably resolves the integrity problem of system, but because the control program of each control module can not change, cause difficult in maintenance, the display effect that this LED lamp forms is single, simultaneously in order to save cost, the control program of each LED lamp is the same, so can only be used for the identical occasion of model change, if the control program of each LED lamp is write as different, make each LED lamp form a systematic change pattern, this can give to manufacture and install and bring huge difficulty.
3, in order to solve the problem existing in technique scheme 2, there were again afterwards people to find out by increasing wireless communication module in the each LED lamp in the LED control system of technical scheme 2, described wireless communication module link control module connects, and by wireless repeater, the control signal of PC master control is sent to each control module.
But due in the LED of large area building wall ornament lamp illuminator, the general area of system that multiple LED lamps or LED lamp group form can be larger, and current wireless signal (as bluetooth or 2.4G is wireless, WIFI etc.) transmission range is all very short, can only be probably 100 meters of left and right, and general control platform can be positioned over top or the bottom of buildings, like this for the higher buildings of aspect ratio, from the LED lamp of the control desk farthest control signal of just having no idea to receive.So in the long light lighting engineering of distance, the control signal of control desk is difficult to arrive whole LED lamps, so in the long light lighting engineering of distance, particularly be directed in the LED ornament lamp illuminator of large area building wall (being in LED display system), directly adopting the brightness of each LED lamp of wireless mode control to change by control desk has its limitation.
Summary of the invention
Object of the present invention is exactly nearer in order to solve the command range that in prior art, LED display system exists, and narrow application range, job insecurity, cost, compared with high-technology problem, the invention provides a kind of new LED display system.
Concrete technical scheme of the present invention is as follows:
The invention provides a kind of LED display system, this display system comprises a control desk and multiple LED lamp, it is characterized in that, described multiple LED lamp is arranged in multi-stage LED lamp group, every one-level LED lamp group comprises multiple LED lamps, each LED lamp in a LED lamp and N+1 level LED lamp group in N level LED lamp group carries out the radio communication of one-to-many, and the each LED lamp in described control desk and first order LED lamp group carries out the radio communication of one-to-many, and N is natural number.
Each LED lamp comprises a radio frequency unit, and the radio frequency unit signal of the LED lamp in N level LED lamp group covers the LED lamp in N+1 level LED lamp group and N+2 level LED lamp group.
Described control desk also comprises the first storage unit, and for storing the positional information of physical address information and each LED lamp of each LED lamp radio frequency unit, the physical address information of each LED lamp radio frequency unit is corresponding one by one with the positional information of each LED lamp.
Described control desk also comprises the first radio frequency unit, the first radio frequency unit of this control desk sends and grouies busy instruction to the radio frequency unit of each LED lamp, and the corresponding relation of the physical address information of each LED lamp radio frequency unit of storing in the physical address information of the radio frequency unit of the LED lamp of replying and the first storage unit and the positional information of each LED lamp is made comparisons, find out the position of each LED lamp of replying, using the LED lamp of radio frequency unit signal covering radius one half-distance that is positioned at control desk as first order LED lamp group, using other LED lamp as second level LED lamp group.
The radio frequency unit of the one LED lamp of N level LED lamp group sends and grouies busy instruction to each LED lamp, and LED lamp and a LED lamp of the N+1 level LED lamp group of replying are set up to many-one radio frequency communication link.
The radio frequency unit of n LED lamp of N level LED lamp group sends and grouies busy instruction to each LED lamp, remove the LED lamp of setting up radio frequency communication link with described first to n-1 LED lamp, n LED lamp in other LED lamps in the N+1 level LED lamp group of replying and this N level LED lamp group set up to many-one radio frequency communication link, each LED lamp of N level LED lamp group sends and grouies busy instruction to each LED lamp one by one, LED lamp in n-1 LED lamp and N+1 level LED lamp group in N level LED lamp group is set up after radio frequency communication link, n LED lamp in N level LED lamp group sends and grouies busy instruction to each LED lamp, n is greater than 1 natural number.
The first radio frequency unit of described control desk also comprises the first connection signal detection module, described the first radio frequency unit regularly sends paging instructions and receives the instruction of replying that each LED lamp of described first order LED lamp group sends to each LED lamp of the first order LED lamp group being connected with control desk, described first connects signal detection module for detection of the time of replying instruction and returning, and judge whether this time is greater than certain threshold values, reply the time that instruction returns and be greater than certain threshold values when described, judge the signal interruption that is connected between described control desk and this LED lamp of first order LED lamp group, after this LED lamp of described first order LED lamp group is connected signal interruption with control desk, first control module control the first radio frequency unit of control desk sends and grouies busy instruction to each LED lamp, n LED lamp in described N level LED lamp group also comprises that N+1 connects signal detection module, the radio frequency unit of n LED lamp in described N level LED lamp group regularly sends paging instructions and receives the instruction of replying that LED lamp in described N+1 level LED lamp group sends to the LED lamp in the N+1 level LED lamp group being connected with this n LED lamp, the N+1 of n LED lamp in described N level LED lamp group connects signal detection module for detection of the time of replying instruction and returning, and judge whether this time is greater than certain threshold values, in the time that the described time of replying instruction is greater than certain threshold values, judge that n LED lamp in N level LED lamp group is connected signal interruption with the LED lamp in N+1 level LED lamp group, n LED lamp in described N level LED lamp group is connected after signal interruption with the LED lamp in N+1 level LED lamp group, n LED lamp in N level LED lamp group sends and grouies busy instruction to each LED lamp.
Each LED lamp in described N level LED lamp group comprises N+1 storage unit, described N+1 storage unit is for storing the instruction of controlling the work of N+1 level LED lamp group, each LED lamp in described N level LED lamp group comprises N+1 control module, and the steering order of described N+1 cell stores is sent to the each LED lamp in N+1 level LED lamp group by described N+1 control module; Described N+1 storage unit is also for storing the work order of the each LED lamp of N level LED lamp group, and described N+1 control module obtains each LED lamp work in the steering order control N level LED lamp group of N+1 storage unit.
First control module control the first radio frequency unit of described control desk is regularly to each LED lamp tranmitting data register beat, and the radio frequency unit of each LED lamp receives described timeticks and stores and call.
The frequency hopping work that circulates under 200～300 frequencies of 2.4G frequency range of each LED lamp.
Compared to prior art, the main beneficial effect of LED display system of the present invention is:
The present invention is by adopting LED lamp group at different levels to carry out topological relay radio communication, make control desk the instruction of controlling the work of each LED lamp can be sent to farther distance, solved the nearer problem of transmission range that available technology adopting controlled in wireless mode causes.
When the arbitrary LED lamp radio frequency unit of LED display system of the present invention in can an one-level LED lamp group in office breaks down, can replace the topological relay that realizes radiofrequency signal to transmit by the LED lamp in other grade of LED lamp group, also can realize the control link from the new N level LED lamp group of new establishment to N+1 level LED lamp group simultaneously, and realize automatic control function, make whole LED control working stability, even if arbitrary LED lamp cannot normally be worked, also can not affect the stable operation of whole system, easy to maintenance, with low cost.
The LED lamp of LED display system of the present invention all has storage unit, and in the time that control end breaks down or disconnect control, the data that can independently call cell stores realize the show state of controlling LED.And disconnect control in the situation that in control desk and first order LED lamp group, the LED lamp in first order LED lamp group can call the LED lamp work in the Data Control second level LED lamp group of storage, controls compared with tool intellectuality.
The present invention regularly to each LED lamp tranmitting data register beat, realizes synchronously the work of each LED lamp by control desk, has avoided As time goes on, and nonsynchronous problem appears showing in each LED lantern festival.
The frequency hopping work that circulates under 200～300 frequencies of 2.4G frequency range of each LED lamp in LED display system of the present invention, can avoid whole system to be subject to foreign frequency to disturb the phenomenon that occurs work disorder.
Accompanying drawing explanation
Fig. 1 is the block diagram of prior art LED display system;
Fig. 2 is the block diagram of the LED display system of the embodiment of the present invention;
Fig. 3 is the block diagram of the control desk of the LED display system of the embodiment of the present invention;
Fig. 4 is the block diagram of LED lamp in the first order LED lamp group of LED display system of the embodiment of the present invention;
Fig. 5 is the block diagram of LED lamp in the second level LED lamp group of LED display system of the embodiment of the present invention;
Fig. 6 is the block diagram of LED lamp in the N level LED lamp group of LED display system of the embodiment of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used for limiting the present invention.
Embodiment
As shown in Figure 2, a kind of LED display system provided by the invention, this display system comprises a control desk and multiple LED lamp, described multiple LED lamp is arranged in multi-stage LED lamp group, every one-level LED lamp group comprises multiple LED lamps, each LED lamp in a LED lamp and N+1 level LED lamp group in N level LED lamp group carries out the radio communication of one-to-many, and the each LED lamp in described control desk and first order LED lamp group carries out the radio communication of one-to-many, and N is natural number.Described control desk is connected with PC, can adopt wireless connections, also can connect by wired mode, described control desk, the LED of main website lamp and slave station LED lamp include a radio frequency unit, in order to distinguish, in the present invention, by the radio frequency unit of control desk, we are referred to as the first radio frequency unit, by the radio frequency unit of LED lamp in first order LED lamp group, we are referred to as the second radio frequency unit, in the LED lamp group of the second level radio frequency unit of LED lamp we be referred to as the 3rd radio frequency unit, we are referred to as N+1 radio frequency unit the radio frequency unit of the LED lamp in N level LED lamp group.As shown in Figure 2, LED lamp in first order LED lamp group is relayed to the instruction of each control of control desk LED lamp work on the LED lamp of second level LED lamp group, the LED lamp of second level LED lamp group is relayed to the instruction of each control desk control LED lamp work on the LED lamp of third level LED lamp group, by that analogy, the LED lamp of N-1 level LED lamp group is relayed to the instruction of each control desk control LED lamp work on the LED lamp of N level LED lamp group, the radio communication that the second radio frequency unit of the LED lamp in the first radio frequency unit of control desk and first order LED lamp group is set up one-to-many, the radio communication that one-to-many set up in the 3rd radio frequency unit resume of the LED lamp in the second radio frequency unit of the arbitrary LED lamp in first order LED lamp group and second level LED lamp group, by that analogy, as shown in Figure 6, the radio communication that the N+1 radio frequency unit of the LED lamp in the LED lamp group in N radio frequency unit and the N level LED lamp group of the arbitrary LED lamp in N-1 level LED lamp group is set up one-to-many.
As shown in Figure 3, described control desk is except comprising the first radio frequency unit, also comprise the first control module, described the first control module sends the instruction of controlling the work of each LED lamp simultaneously to the overall situation, even if the work order of each LED lamp is different, but because the physical address of the radio frequency unit being connected with each LED lamp is different, so the steering order that the first control module sends can comprise the steering order of all LED lamps, the control module of each LED lamp sorts receiving after described steering order, find out point steering order corresponding with the physical address of the radio frequency unit of this LED lamp, thereby control the drive unit drives LED luminescence unit work of LED lamp.So the object of design is mainly in order to save cost, because if the steering order difference sending to each LED lamp, so for fear of the interference of two adjacent LED lamp signals of communication, must be similar to the Principle of Communication of mobile phone, adopt the method for frequency hopping to carry out radio communication, thus, not only increased communications cost, and the synchronous problem of played data between each LED lamp is difficult to resolve certainly.
The principle of the each LED lamp of control desk control work for convenience of explanation, describe for example below: as shown in Figure 4, the LED lamp of described first order LED lamp group not only comprises the second radio frequency unit, also comprise the second control module, as shown in Figure 5, the LED lamp of described second level LED lamp group not only comprises the 3rd radio frequency unit, also comprise the 3rd control module, the steering order that the first radio frequency unit of described control desk produces the first control module is mass-sended the second radio frequency unit to LED lamp in first order LED lamp group, in first order LED lamp group, the second radio frequency unit of LED lamp receives the second control module of giving LED lamp in first order LED lamp group after described steering order and sorts, pick out with this first order LED lamp group in point steering order that matches of each LED lamp, then (described control desk comprises the first storage unit this point of steering order to be stored in to the second storage unit, to make referrals in the back) in, the physical address information of the radio frequency unit of each the LED lamp in first order LED lamp group is different, so point steering order of each the LED lamp in first order LED lamp group is also different, its point of steering order is corresponding with the physical address information of its radio frequency unit, the steering order that in first order LED lamp group, the second control module of arbitrary LED lamp also sends control desk sends to the LED lamp in the LED lamp group of the second level by the second radio frequency unit, the second radio frequency unit of the LED lamp in the LED lamp group of the second level is exercised the work identical with the LED lamp of first order LED lamp group after receiving described steering order, be transmitted to the LED lamp of third level LED lamp group by steering order and sort out point steering order corresponding with LED lamp in the LED lamp group of this second level, do not repeat them here.In fact, LED lamp in first order LED lamp group adopts identical component structure with the LED lamp in the LED lamp group of the second level, the function just realizing in the time setting up topological relay radio communication net from control desk is different, any LED lamp is defined as to the LED lamp in first order LED lamp group in each LED lamp, it is with respect to the determining positions of control desk according to each LED lamp that any LED lamp is defined as LED lamp in the LED lamp group of the second level.And the first radio frequency unit of control desk is identical with the radiofrequency signal coverage of the radio frequency unit of each LED lamp.
Specifically, do not set up radio communication and LED lamp and control desk while not setting up radio communication when each LED lamp yet, can have following two kinds of methods to realize each LED lamp and LED lamp and control desk and set up topological relay radio frequency communication network.
1. manually arrange, first each LED lamp is numbered, the numbering correspondence of each LED lamp the two-dimensional space position of each LED lamp, control desk is arranged to the center of the radiofrequency signal coverage of each LED lamp simultaneously, the scope covering according to the signal of control desk, the LED lamp that is positioned at control desk range of signal is divided into two groups, one group is first order LED lamp group, other one group is second level LED lamp group, wherein first order LED lamp group is positioned in the half of control desk signal cover radius, take control desk as the center of circle, half with the first radio frequency unit radiofrequency signal covering radius of control desk is drawn a circle, LED lamp in circle is first order LED lamp group, is second level LED lamp group beyond circle, as shown in Figure 2, comprise multiple LED lamps in first order LED lamp group, be respectively a LED lamp, the 2nd LED lamp, the 3rd LED lamp, ... and n LED lamp, then the LED lamp in the LED lamp in the second level LED lamp group in the radiofrequency signal coverage of the LED lamp in first order LED lamp group and first order LED lamp group is set up to many-to-one radio frequency communication link, remove in the LED lamp group of the second level with first order LED lamp group in a LED lamp set up the LED lamp of radio frequency communication link, the 2nd LED lamp in other LED lamps in second level LED lamp group in the radiofrequency signal coverage of the 2nd LED lamp in first order LED lamp group and first order LED lamp group is set up to many-to-one radio frequency communication link, by that analogy, remove first to n LED lamp in the LED lamp group of the second level and set up the LED lamp of radio frequency communication link, other LED lamps in second level LED lamp group in n LED lamp radiofrequency signal coverage in first order LED lamp group and n LED lamp in first order LED lamp group are set up to many-to-one radio frequency communication link.
LED lamp in each LED lamp in first order LED lamp group and second level LED lamp group establishes after radio frequency communication link, put the LED lamp in a half-distance of the radiofrequency signal covering radius of the LED lamp in the LED lamp group of the second level under third level LED lamp group, and set up the many-to-one radio frequency communication link of a LED lamp in LED lamp and the second level LED lamp group in this third level LED lamp group, in like manner, remove with second level LED lamp group in first to n LED lamp set up the LED lamp of radio frequency communication link, other LED lamps in one half-distance of the radiofrequency signal covering radius of n LED lamp in the LED lamp group of the second level are put under in third level LED lamp group.By that analogy, set up the topological relay radio frequency communication link of the LED lamp one-to-many in each LED lamp and the N+1 level LED lamp group in N level LED lamp group by said method.The quantity of the LED lamp that LED lamp groups at different levels comprise is not limit, and the size of the two dimensional surface of LED lamp compositions at different levels can be different, can set up radio communication connection but condition that must be satisfied is adjacent LED lamp groups at different levels.After establishing communication connection net, this network topology structure chart is stored in the first storage unit of control desk, the first control module of described control desk calls described network topology structure figure steering order is sent to each LED lamp, the circuit that described steering order arrives LED lamp carries out according to described network topology structure, in the situation that described steering order can not disposable arrival, forward described steering order by other LED lamp.
2. system Lookup protocol, first each LED lamp is numbered, find out the physical address of each LED lamp radio frequency unit simultaneously, set up the corresponding relation of each LED lamp numbering and radio frequency unit physical address, the numbering of each LED lamp is corresponding with the two-dimensional space position of each LED lamp again simultaneously, so just set up the one-to-one relationship of the physical address of each LED lamp radio frequency unit and the two-dimensional space position of each LED lamp, this corresponding relation is stored in the first storage unit of described control desk, described control desk also comprises the first radio frequency unit, the first radio frequency unit of this control desk sends and grouies busy instruction to the radio frequency unit of each LED lamp, and the corresponding relation of the physical address information of each LED lamp radio frequency unit of storing in the physical address information of the radio frequency unit of the LED lamp of replying and the first storage unit and the positional information of each LED lamp is made comparisons, find out the position of each LED lamp of replying, using the LED lamp of radio frequency unit signal covering radius one half-distance that is positioned at control desk as first order LED lamp group, using other LED lamp as second level LED lamp group.The radio frequency unit of the one LED lamp of first order LED lamp group sends and grouies busy instruction to each LED lamp, and the LED lamp in the LED lamp of the second level LED lamp group of replying and this first order LED lamp group is set up to many-one radio frequency communication link.The radio frequency unit of second LED lamp of first order LED lamp group sends and grouies busy instruction to each LED lamp, remove with described first order LED lamp group in first LED lamp set up the LED lamp in the second level LED lamp group of radio frequency communication link, second LED lamp in other LED lamps in the 2nd LED lamp group of replying and a LED lamp group set up to many-one radio frequency communication link, the like, the radio frequency unit of n LED lamp of first order LED lamp group sends and grouies busy instruction to each LED lamp, remove the LED lamp of setting up radio frequency communication link with described first to n-1 LED lamp, n LED lamp in other LED lamps in the second level LED lamp group of replying and this first order LED lamp group set up to many-one radio frequency communication link, each LED lamp of first order LED lamp group sends and grouies busy instruction to each LED lamp one by one, LED lamp in n-1 LED lamp and second level LED lamp group is set up after radio frequency communication link, n LED lamp sends and grouies busy instruction to each LED lamp, n is greater than 1 natural number.According to above-mentioned method and with identical principle be manually set deduce known, as shown in Figure 6, the radio frequency unit of n LED lamp of N level LED lamp group sends and grouies busy instruction to each LED lamp, remove the LED lamp of setting up radio frequency communication link with described n-1 LED lamp, other LED lamps of replying and this n LED lamp are set up to many-one radio frequency communication link, each LED lamp of N level LED lamp group sends and grouies busy instruction to each LED lamp one by one, LED lamp in n-1 LED lamp and N+1 level LED lamp group is set up after radio frequency communication link, n LED lamp sends and grouies busy instruction to each LED lamp, n is greater than 1 natural number.
After establishing network topology structure, if there is a LED lamp to occur power supply trouble in each LED lamp, cause radio frequency unit cisco unity malfunction, this LED lantern festival and whole communication network disconnect, if the LED Deng Shi LED of the main website lamp breaking down, each slave station LED lamp of setting up one-to-many radio communication with main website LED lamp also can disconnect with whole communication network, and certainly, this situation is unallowed.The present invention has adopted following method to solve the problem of above-mentioned existence:
The first radio frequency unit of described control desk also comprises the first connection signal detection module, described the first radio frequency unit regularly sends paging instructions and receives the instruction of replying that each LED lamp of described first order LED lamp group sends to each LED lamp of the first order LED lamp group being connected with control desk, described first connects signal detection module for detection of the time of replying instruction and returning, and judge whether this time is greater than certain threshold values, reply the time that instruction returns and be greater than certain threshold values when described, judge the signal interruption that is connected between described control desk and this LED lamp of first order LED lamp group, after this LED lamp of described first order LED lamp group is connected signal interruption with control desk, first control module control the first radio frequency unit of control desk sends and grouies busy instruction to each LED lamp, then re-start the work that network topology structure is set up, its principle of work is identical with the principle that this above-mentioned system is set up network topology structure for the first time, do not repeat them here, a LED lamp in described first order LED lamp group also comprises the second connection signal detection module, the radio frequency unit of the LED lamp in described first order LED lamp group regularly sends paging instructions and receives the instruction of replying that LED lamp in the LED lamp group of the described second level sends to the LED lamp in the second level LED lamp group being connected with a LED lamp, second of a LED lamp in described first order LED lamp group connects signal detection module for detection of the time of replying instruction and returning, and judge whether this time is greater than certain threshold values, in the time that the described time of replying instruction is greater than certain threshold values, judge that the LED lamp in first order LED lamp group is connected signal interruption with the LED lamp in the LED lamp group of the second level, a LED lamp in described first order LED lamp group is connected after signal interruption with the LED lamp in the LED lamp group of the second level, first LED lamp in first order LED lamp group sends and grouies busy instruction to each LED lamp, then re-start the work that network topology structure is set up.Each LED lamp of other LED lamp groups at different levels is identical with the principle of work of the LED lamp in first order LED lamp group, that is: n LED lamp in described N level LED lamp group also comprises that N+1 connects signal detection module, the radio frequency unit of n LED lamp in described N level LED lamp group regularly sends paging instructions and receives the instruction of replying that LED lamp in described N+1 level LED lamp group sends to the LED lamp in the N+1 level LED lamp group being connected with this n LED lamp, the N+1 of n LED lamp in described N level LED lamp group connects signal detection module for detection of the time of replying instruction and returning, and judge whether this time is greater than certain threshold values, in the time that the described time of replying instruction is greater than certain threshold values, judge that n LED lamp in N level LED lamp group is connected signal interruption with the LED lamp in N+1 level LED lamp group, n LED lamp in described N level LED lamp group is connected after signal interruption with the LED lamp in N+1 level LED lamp group, n LED lamp in N level LED lamp group sends and grouies busy instruction to each LED lamp, then re-start the work that network topology structure is set up, do not repeat them here.
Establish after radio frequency communication network, described control desk can send to each LED lamp by steering order by this radio frequency communication network, the duty of the luminescence unit of in fact each LED lamp is not all the time all to upgrade, if the steering order of the duty of the luminescence unit of each LED lamp all needs to send by control desk all the time, can cause very large burden to communication network, in the situation that radiofrequency signal is not good, signal transmission there will be temporary interruption, and due to the instability of wireless network signal, easily cause the problem of signal transmission delay, further can make the luminescence unit duty of each LED lamp occur nonsynchronous problem.So described above, at each LED lamp, storage unit is set, for storing point steering order of controlling the work of each LED lamp luminescence unit, lose while being connected at control desk sometimes and a certain LED lamp of first order LED lamp group, for can control end lose connect time, the each LED of main website lamp still can be controlled the work of connected slave station LED lamp, the LED lamp of described first order LED lamp group also comprises the second storage unit, described the second storage unit is for storing the instruction of the LED lamp work of controlling second level LED lamp group to the N level LED lamp group, described steering order is the steering order that controller sends, LED lamp in the LED lamp group of the described second level comprises the second control module, described the second control module sends to the steering order of described the second cell stores on the LED lamp of second level LED lamp group to the N level LED lamp group.That is: the each LED lamp in described N level LED lamp group comprises N+1 storage unit, described N+1 storage unit is for storing the instruction of controlling the work of N+1 level LED lamp group, each LED lamp in described N level LED lamp group comprises N+1 control module, and the steering order of described N+1 cell stores is sent to the each LED lamp in N+1 level LED lamp group by described N+1 control module; Described N+1 storage unit is also for storing the work order of the each LED lamp of N level LED lamp group, and described N+1 control module obtains each LED lamp work in the steering order control N level LED lamp group of N+1 storage unit.
Each LED lamp is provided with after storage unit, the control module of each LED lamp can call the steering order control luminescence unit work of cell stores, or the LED lamp of N+1 level LED lamp group also can be directly by the LED lamp control in N level LED lamp group, because the steering order of the work of LED lamp in LED lamp groups at different levels can be separate, the time data of its work reads from the crystal oscillator of the control module of each LED lamp, because crystal oscillator there will be time error in long-term use procedure, so the duty of each LED lamp luminescence unit there will be nonsynchronous problem.
In order to address this problem, first control module control the first radio frequency unit of described control desk is regularly to each LED lamp tranmitting data register beat, the radio frequency unit of each LED lamp receives described timeticks and stores and call, correct like this after the time error of each LED lamp crystal oscillator, can realize this LED control system and play synchronous.
Certainly, produce for fear of described LED control system and extraneous wireless signal the problem of disturbing, the frequency hopping work that circulates of the each LED lamp in the control system of LED lamp of the present invention under 200～300 frequencies of 2.4G frequency range.
In LED control system of the present invention, the physical arrangement of each LED lamp is identical, include radio frequency unit, power supply unit, control module, storage unit, driver element and luminescence unit, power supply unit is for powering to radio frequency unit, control module, storage unit, driver element and luminescence unit, the steering order control luminescence unit work of driver element for obtaining control module, although each LED lamp physical arrangement is identical, but the Network Communication Principle difference of each LED lamp in the control system of described LED lamp, but can substitute mutually again.
It should be noted that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (7)
1. a LED display system, this display system comprises a control desk and multiple LED lamp, it is characterized in that, described multiple LED lamp is arranged in multi-stage LED lamp group, every one-level LED lamp group comprises multiple LED lamps, each LED lamp in a LED lamp and N+1 level LED lamp group in N level LED lamp group carries out the radio communication of one-to-many, and the each LED lamp in described control desk and first order LED lamp group carries out the radio communication of one-to-many, and N is natural number; Each LED lamp comprises a radio frequency unit, and the radio frequency unit signal of the LED lamp in N level LED lamp group covers the LED lamp in N+1 level LED lamp group and N+2 level LED lamp group; Described control desk also comprises the first storage unit, and for storing the positional information of physical address information and each LED lamp of each LED lamp radio frequency unit, the physical address information of each LED lamp radio frequency unit is corresponding one by one with the positional information of each LED lamp; Described control desk also comprises the first radio frequency unit, the first radio frequency unit of this control desk sends and grouies busy instruction to the radio frequency unit of each LED lamp, and the corresponding relation of the physical address information of each LED lamp radio frequency unit of storing in the physical address information of the radio frequency unit of the LED lamp of replying and the first storage unit and the positional information of each LED lamp is made comparisons, find out the position of each LED lamp of replying, using the LED lamp of radio frequency unit signal covering radius one half-distance that is positioned at control desk as first order LED lamp group, using other LED lamp as second level LED lamp group.
2. LED display system according to claim 1, it is characterized in that, the radio frequency unit of the one LED lamp of N level LED lamp group sends and grouies busy instruction to each LED lamp, and LED lamp and a LED lamp of the N+1 level LED lamp group of replying are set up to many-one radio frequency communication link.
3. LED display system according to claim 2, it is characterized in that, the radio frequency unit of n LED lamp of N level LED lamp group sends and grouies busy instruction to each LED lamp, remove the LED lamp of setting up radio frequency communication link with first to n-1 LED lamp, n LED lamp in other LED lamps in the N+1 level LED lamp group of replying and this N level LED lamp group set up to many-one radio frequency communication link, each LED lamp of N level LED lamp group sends and grouies busy instruction to each LED lamp one by one, LED lamp in n-1 LED lamp and N+1 level LED lamp group in N level LED lamp group is set up after radio frequency communication link, n LED lamp in N level LED lamp group sends and grouies busy instruction to each LED lamp, n is greater than 1 natural number.
4. LED display system according to claim 3, it is characterized in that, the first radio frequency unit of described control desk also comprises the first connection signal detection module, described the first radio frequency unit regularly sends paging instructions and receives the instruction of replying that each LED lamp of described first order LED lamp group sends to each LED lamp of the first order LED lamp group being connected with control desk, described first connects signal detection module for detection of the time of replying instruction and returning, and judge whether this time is greater than certain threshold values, reply the time that instruction returns and be greater than certain threshold values when described, judge the signal interruption that is connected between described control desk and this LED lamp of first order LED lamp group, after this LED lamp of described first order LED lamp group is connected signal interruption with control desk, first control module control the first radio frequency unit of control desk sends and grouies busy instruction to each LED lamp, n LED lamp in described N level LED lamp group also comprises that N+1 connects signal detection module, the radio frequency unit of n LED lamp in described N level LED lamp group regularly sends paging instructions and receives the instruction of replying that LED lamp in described N+1 level LED lamp group sends to the LED lamp in the N+1 level LED lamp group being connected with this n LED lamp, the N+1 of n LED lamp in described N level LED lamp group connects signal detection module for detection of the time of replying instruction and returning, and judge whether this time is greater than certain threshold values, in the time that the described time of replying instruction is greater than certain threshold values, judge that n LED lamp in N level LED lamp group is connected signal interruption with the LED lamp in N+1 level LED lamp group, n LED lamp in described N level LED lamp group is connected after signal interruption with the LED lamp in N+1 level LED lamp group, n LED lamp in N level LED lamp group sends and grouies busy instruction to each LED lamp.
5. according to the arbitrary described LED display system of claim 1-3, it is characterized in that, each LED lamp in described N level LED lamp group comprises N+1 storage unit, described N+1 storage unit is for storing the instruction of controlling the work of N+1 level LED lamp group, each LED lamp in described N level LED lamp group comprises N+1 control module, and the steering order of described N+1 cell stores is sent to the each LED lamp in N+1 level LED lamp group by described N+1 control module; Described N+1 storage unit is also for storing the work order of the each LED lamp of N level LED lamp group, and described N+1 control module obtains each LED lamp work in the steering order control N level LED lamp group of N+1 storage unit.
6. LED display system according to claim 1, is characterized in that, first control module control the first radio frequency unit of described control desk is regularly to each LED lamp tranmitting data register beat, and the radio frequency unit of each LED lamp receives described timeticks and stores and call.
7. LED display system according to claim 1, is characterized in that, the frequency hopping work that circulates under 200～300 frequencies of 2.4G frequency range of each LED lamp.
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| CN201110229113.5A CN102622959B (en) | 2011-08-10 | 2011-08-10 | LED display system |
| PCT/CN2011/078804 WO2013020305A1 (en) | 2011-08-10 | 2011-08-23 | Led display system |
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| CN201110229113.5A CN102622959B (en) | 2011-08-10 | 2011-08-10 | LED display system |
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| CN103052221A (en) * | 2012-12-15 | 2013-04-17 | 华南理工大学 | Multifunctional LED (light emitting diode) energy-saving illuminating system based on wireless self-organized network |
| CN104602404B (en) * | 2014-12-30 | 2017-01-25 | 生迪光电科技股份有限公司 | LED lighting apparatus, wireless mesh network and control method thereof |
| CN111385504B (en) * | 2018-12-29 | 2022-07-29 | 深圳Tcl新技术有限公司 | Control method of spliced television |
| US11232684B2 (en) * | 2019-09-09 | 2022-01-25 | Appleton Grp Llc | Smart luminaire group control using intragroup communication |
| CN112004281A (en) * | 2020-08-18 | 2020-11-27 | 深圳市秀骑士科技有限公司 | Lamp system convenient for remote control |
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| CN102622959A (en) | 2012-08-01 |
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