CN102622959A - LED display system - Google Patents
LED display system Download PDFInfo
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- CN102622959A CN102622959A CN2011102291135A CN201110229113A CN102622959A CN 102622959 A CN102622959 A CN 102622959A CN 2011102291135 A CN2011102291135 A CN 2011102291135A CN 201110229113 A CN201110229113 A CN 201110229113A CN 102622959 A CN102622959 A CN 102622959A
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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
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
Popularization along with the low-carbon energy-saving idea; The LED lamp has obtained using widely at lighting field not only; Also obtained using widely in the demonstration field; This mainly is attributed to the good development properties of LED, and in the urban lighting lighting engineering, the LED ornament lamp of building wall not only can play extraordinary decorative effect; Simultaneously a plurality of LED lamps or a plurality of LED lamp groups constitute one and can set off each other with the LED illuminator of coordinating and can also demonstrate different literal and pattern, can extraordinary advertisement and vision beautify effect.For can being shown jointly, each LED lamp forms a complete pattern; Need control each LED or each LED lamp group through a control system; Control its duty at any time, comprise the light on and off state, the color of brightness and demonstration etc. (certainly; The LED lamp is more little, and the pattern resolution that the LED display system that a plurality of LED lamps splice out shows is more little).
At present the method to the control of the LED lamp group of building wall comprises following several kinds:
1, adopts wired LED control system; As shown in Figure 1; This LED control system is transferred to repeater through signal wire (comprising twisted-pair feeder) with the control signal of PC master control, and repeater is distributed to a plurality of iversion controllers with this control signal through signal wire (comprising twisted-pair feeder) then, each iversion controller and the series connection of a plurality of LED lamp; This iversion controller can convey to any LED lamp along the LED lamp of connecting with control signal, thereby can control the duty of a plurality of LED lamps.Though this kind scheme can be controlled each LED lamp and do any variation,,, then can cause a plurality of led light source cisco unity malfunctions, so its reliability is relatively poor so can cause needing only a LED lamp or iversion controller breaks down because a plurality of LED connects.And it is very inconvenient in maintenance; Because being difficult to find at short notice is that which LED lamp breaks down, and if increase the quantity of iversion controller, make each divide control 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 that exists in the technique scheme 1, people had found out other a kind of LED control system again afterwards, and promptly at the inner integrated control module of each LED lamp, each LED lamp is controlled by connected control module.Because each LED lamp is controlled by control module independently, the control signal of each LED lamp does not influence each other, so the reliability of this control system is better; But owing to each control module is connected with other controllers, so in order to reach the purpose of Autonomous Control LED lamp, the control program of each control module is all good in project installation burning in advance before; Can not change, though this kind control method preferably resolves the integrity problem of system, because the control program of each control module can not change; Caused difficult in maintenance; The display effect that this LED lamp forms is single, and simultaneously in order to save cost, the control program of each LED lamp all is the same; So can only be used for the identical occasion of model change; If the control program of each LED lamp is all write as different, make each LED lamp form a systematic change pattern, then this can give to manufacture and install and bring huge difficulty.
3, in order to solve the problem that exists in the technique scheme 2; There were people to find out through with increasing wireless communication module in each the LED lamp in the LED control system of technical scheme 2 afterwards again; Said wireless communication module link control module connects, and through wireless repeater the control signal of PC master control is sent to each control module.
But because in the LED of large tracts of land building wall ornament lamp illuminator; The general area of system that a plurality of LED lamps or LED lamp group constitute can be bigger; And present wireless signal (wireless like bluetooth or 2.4G, WIFI etc.) transmission range is all very short, probably can only be about 100 meters, and general control desk can be positioned over the 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 tracts of land building wall (being in the LED display system), directly adopting the brightness of each LED lamp of wireless mode control to change through control desk has its limitation.
Summary of the invention
The object of the invention is exactly nearer in order to solve the command range that the LED display system exists in the prior art, narrow application range, job insecurity, the more high technical matters of cost, and the present invention provides a kind of new LED display system.
Concrete technical scheme of the present invention is following:
The present invention provides a kind of LED display system; This display system comprises a control desk and a plurality of LED lamp, it is characterized in that, said a plurality of LED lamps are arranged in the multi-stage LED lamp group; Each grade LED lamp group comprises a plurality of LED lamps; LED lamp in the N level LED lamp group and each the LED lamp in the N+1 level LED lamp group carry out the radio communication of one-to-many, and each the LED lamp in said control desk and the first order LED lamp group carries out the radio communication of one-to-many, and N is a natural number.
Each LED lamp comprises a radio frequency unit, and the radio frequency unit signal of the LED lamp in the N level LED lamp group covers the LED lamp in N+1 level LED lamp group and the N+2 level LED lamp group.
Said control desk also comprises first storage unit, is used to store the positional information of physical address information and each LED lamp of each LED lamp radio frequency unit, and the physical address information of each LED lamp radio frequency unit is corresponding one by one with the positional information of each LED lamp.
Said control desk also comprises first radio frequency unit; First radio frequency unit of this control desk is grouied busy instruction to the radio frequency unit transmission of each LED lamp; And the corresponding relation of the positional information 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 first storage unit and each LED lamp made comparisons; Find out the position of each LED lamp of replying; The LED lamp of radio frequency unit signal covering radius one half-distance that will be positioned at control desk is as first order LED lamp group, with 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 to each LED lamp grouies busy instruction, and the LED lamp and a LED lamp of the N+1 level LED lamp group of replying are set up the many-one radio frequency communication link.
The radio frequency unit of n LED lamp of N level LED lamp group sends to each LED lamp grouies busy instruction; Remove the LED lamp of setting up radio frequency communication link with said first to n-1 LED lamp; Other LED lamps in the N+1 level LED lamp group of replying and n LED lamp in this N level LED lamp group are set up the many-one radio frequency communication link; Each LED lamp of N level LED lamp group sends to each LED lamp one by one grouies busy instruction; After treating that n-1 LED lamp and the LED lamp in the N+1 level LED lamp group in the N level LED lamp group set up radio frequency communication link, n LED lamp in the N level LED lamp group sends to each LED lamp grouies busy that instruction, n are the natural number greater than 1.
First radio frequency unit of said control desk comprises that also first connects signal detection module; Said first radio frequency unit regularly sends paging instructions and receives the instruction of replying that each LED lamp of said first order LED lamp group sends to each LED lamp of the first order LED lamp group that is connected with control desk; The said first connection signal detection module is used to detect replys the time that instruction is returned; And judge that whether this time is greater than certain threshold values; When said replying instructs the time of returning greater than certain threshold values; Then judge the signal interruption that is connected between this LED lamp of said control desk and first order LED lamp group, with after control desk is connected signal interruption, first control module of control desk is controlled first radio frequency unit and is sent to each LED lamp and group busy instruction at this LED lamp of said first order LED lamp group; N LED lamp in the said N level LED lamp group comprises that also N+1 connects signal detection module; The radio frequency unit of n LED lamp in the said N level LED lamp group regularly to N+1 level LED lamp group that this n LED lamp is connected in the LED lamp send paging instructions and receive the instruction of replying that LED lamp in the said N+1 level LED lamp group sends; The N+1 connection signal detection module of n LED lamp in the said N level LED lamp group is used to detect replys the time that instruction is returned; And judge that whether this time is greater than certain threshold values; When said time of replying instruction during greater than certain threshold values; Judge that then n LED lamp in the N level LED lamp group is connected signal interruption with LED lamp in the N+1 level LED lamp group; N LED lamp in said N level LED lamp group is with after the LED lamp in the N+1 level LED lamp group is connected signal interruption, and n LED lamp in the N level LED lamp group sends to each LED lamp grouies busy instruction.
Each LED lamp in the said N level LED lamp group comprises the N+1 storage unit; Said N+1 storage unit is used to store the instruction of control N+1 level LED lamp group work; Each LED lamp in the said N level LED lamp group comprises the N+1 control module, and said N+1 control module sends to each the LED lamp in the N+1 level LED lamp group with the steering order of said N+1 cell stores; Said N+1 storage unit also is used for storing the work order of each LED lamp of N level LED lamp group, and the steering order that said N+1 control module obtains the N+1 storage unit is controlled each LED lamp work in the N level LED lamp group.
First control module of said control desk is controlled first radio frequency unit regularly to each LED lamp tranmitting data register beat, and the radio frequency unit of each LED lamp receives said timeticks and stores and call.
Each LED lamp is the work of circulation frequency hopping under 200～300 frequencies of 2.4G frequency range.
Compared to prior art, the main beneficial effect of LED display system of the present invention is:
The present invention carries out topological relay radio communication through adopting LED lamp group at different levels; Make control desk can the instruction of each LED lamp work of control 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 realizing the topological relay transmission of radiofrequency signal by the LED lamp in other grades LED lamp group; Also can realize simultaneously control link, and realize automatic control function, make the whole LED Control work stable from the new N level LED lamp group of new establishment to N+1 level LED lamp group; Even arbitrary LED lamp can't operate as normal; Can not influence the stable operation of total system yet, easy to maintenance, with low cost.
The LED lamp of LED display system of the present invention all has storage unit, and when control end broke down or breaks off control, the data that can independently call cell stores realized controlling the show state of LED.And break off under the situation of control in control desk and first order LED lamp group, the LED lamp in the first order LED lamp group can call the LED lamp work in the Data Control second level LED lamp group of storage, and control is intelligent than tool.
The present invention regularly to each LED lamp tranmitting data register beat, makes the work of each LED lamp realize having avoided As time goes on synchronously through control desk, and nonsynchronous problem appears showing in each LED lantern festival.
Each LED lamp in the LED display system of the present invention is the work of circulation frequency hopping under 200～300 frequencies of 2.4G frequency range, can avoid total system disturbed by foreign frequency and the disorderly phenomenon of work occur.
Description of drawings
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 invention;
Fig. 3 is the block diagram of control desk of the LED display system of the embodiment of the 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 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 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 invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be 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 comprise a control desk and a plurality of LED lamp, and said a plurality of LED lamps are arranged in the multi-stage LED lamp group; Each grade LED lamp group comprises a plurality of LED lamps; LED lamp in the N level LED lamp group and each the LED lamp in the N+1 level LED lamp group carry out the radio communication of one-to-many, and each the LED lamp in said control desk and the first order LED lamp group carries out the radio communication of one-to-many, and N is a natural number.Said control desk is connected with PC, can adopt wireless connections, also can connect through wired mode; Said 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, with the radio frequency unit of control desk; We are referred to as first radio frequency unit; We are referred to as second radio frequency unit with the radio frequency unit of LED lamp in the first order LED lamp group, 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 the N+1 radio frequency unit radio frequency unit of the LED lamp in the N level LED lamp group.As shown in Figure 2; LED lamp in the first order LED lamp group is relayed to the instruction of each LED lamp work of control of control desk on the LED lamp of second level LED lamp group; The instruction that the LED lamp of second level LED lamp group is controlled each LED lamp work with control desk is relayed to the LED lamp of third level LED lamp group; By that analogy; The instruction that the LED lamp of N-1 level LED lamp group is controlled each LED lamp work with control desk is relayed to the LED lamp of N level LED lamp group; The radio communication that second radio frequency unit of the LED lamp in first radio frequency unit of control desk and the 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 second radio frequency unit of the arbitrary LED lamp in the first order LED lamp group and the second level LED lamp group, by that analogy; Radio communication as shown in Figure 6, that the N radio frequency unit of the arbitrary LED lamp in the N-1 level LED lamp group and the N+1 radio frequency unit of the LED lamp in the LED lamp group in the N level LED lamp group are set up one-to-many.
As shown in Figure 3; Said control desk also comprises first control module except that comprising first radio frequency unit, said first control module will be controlled the instruction of each LED lamp work and send to the overall situation simultaneously; Even the work order of each LED lamp has nothing in common with each other; But because the physical address of the radio frequency unit that is connected with each LED lamp has nothing in common with each other, so the steering order that first control module sends can comprise the steering order of all LED lamps, the control module of each LED lamp sorts after receiving said steering order; Find out the corresponding minute steering order of physical address with the radio frequency unit of this LED lamp, thus the drive unit drives LED luminescence unit work of control LED lamp.So the purpose of design mainly is in order to save cost; If,, must be similar to the Principle of Communication of mobile phone so for fear of the interference of two adjacent LED lamp signals of communication because the steering order of sending to each LED lamp is different; Adopt the method for frequency hopping to carry out radio communication; Thus, not only increased communications cost, and the synchronous problem of the played data between each LED lamp is difficult to resolve certainly.
For the ease of each LED lamp work principle of explanation control desk control; Describe for example below: as shown in Figure 4; The LED lamp of said first order LED lamp group not only comprises second radio frequency unit; Also comprise second control module; As shown in Figure 5, the LED lamp of said second level LED lamp group not only comprises the 3rd radio frequency unit, also comprises the 3rd control module; First radio frequency unit of said control desk is mass-sended second radio frequency unit to LED lamp in the first order LED lamp group with the steering order that first control module produces; Second radio frequency unit of LED lamp receives second control module of giving LED lamp in the first order LED lamp group after the said steering order and sorts in the first order LED lamp group, pick out with this first order LED lamp group in the branch steering order that matches of each LED lamp, then with this minute steering order be stored in second storage unit (said control desk comprise first storage unit; To make referrals in the back) in; The physical address information of the radio frequency unit of each the LED lamp in the first order LED lamp group is different, so the branch steering order of each the LED lamp in the first order LED lamp group is also different, its minute steering order corresponding with the physical address information of its radio frequency unit; Second control module of arbitrary LED lamp also sends to the LED lamp in the LED lamp group of the second level with the steering order that control desk sends through second radio frequency unit in the first order LED lamp group; Second radio frequency unit of the LED lamp in the LED lamp group of the second level receives the identical work of LED lamp of exercising after the said steering order with first order LED lamp group, soon steering order be transmitted to the LED lamp of third level LED lamp group and sort out with this second level LED lamp group in corresponding minute steering order of LED lamp, repeat no more at this.In fact; LED lamp in LED lamp in the first order LED lamp group and the second level LED lamp group adopts the components identical structure; The function that just when setting up topological relay radio communication net with control desk, is realized is different; In each LED lamp, any LED lamp is confirmed as the LED lamp in the first order LED lamp group, it is with respect to the determining positions of control desk according to each LED lamp that any LED lamp is confirmed as LED lamp in the LED lamp group of the second level.And the radiofrequency signal coverage of first radio frequency unit of control desk and the radio frequency unit of each LED lamp is identical.
Specifically, do not set up radio communication and LED lamp and control desk when not setting up radio communication yet, can have following two kinds of methods to realize that each LED lamp and LED lamp and control desk set up topological relay radio frequency communication network when each LED lamp.
1. manually be provided with, at first each LED lamp numbered, the numbering of each LED lamp corresponding the two-dimensional space position of each LED lamp; Simultaneously control desk is arranged at the center of the radiofrequency signal coverage of each LED lamp, according to the scope that the signal of control desk covers, the LED lamp that will be positioned at the 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, and wherein first order LED lamp group is positioned in half of control desk signal cover radius, promptly is the center of circle with the control desk; Draw a circle with half of the first radio frequency unit radiofrequency signal covering radius of control desk; Is first order LED lamp group in circle with interior LED lamp, and beyond circle is second level LED lamp group, as shown in Figure 2; In first order LED lamp group, comprise a plurality of LED lamps; Be respectively a LED lamp, the 2nd LED lamp, the 3rd LED lamp ... and n LED lamp, then LED lamp in the second level LED lamp group in the radiofrequency signal coverage of the LED lamp in the first order LED lamp group and the LED lamp in the first order LED lamp group are set up 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; Other LED lamps in the second level LED lamp group in the radiofrequency signal coverage of the 2nd LED lamp in the first order LED lamp group and the 2nd LED lamp in the first order LED lamp group are set up 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 the second level LED lamp group in n the LED lamp radiofrequency signal coverage in the first order LED lamp group and n LED lamp in the first order LED lamp group are set up many-to-one radio frequency communication link.
After treating that each LED lamp and the LED lamp in the LED lamp group of the second level in the first order LED lamp group set up radio frequency communication link; Put the LED lamp in the 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 LED lamp and the many-to-one radio frequency communication link of a LED lamp in the LED lamp group of the second level 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 the 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 the third level LED lamp group.By that analogy, set up each LED lamp and the topological relay radio frequency communication link of the LED lamp one-to-many in the N+1 level LED lamp group in the N level LED lamp group through said method.The quantity of the LED lamp that LED lamp groups at different levels are comprised is not limit, and the big I of the area of the two dimensional surface that LED lamps at different levels are formed is different, can set up the radio communication connection but the condition that must satisfy is adjacent LED lamp groups at different levels.Set up and after good communication connects net this network topology structure chart is stored in first storage unit of control desk; First control module of said control desk calls said network topology structure figure steering order is sent to each LED lamp; The circuit that said steering order arrives the LED lamp carries out according to said network topology structure; Under said steering order can not the situation of disposable arrival, transmit said steering order through other LED lamp.
2. system is provided with automatically; At 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; Simultaneously the numbering of each LED lamp is corresponding with the two-dimensional space position of each LED lamp again, has so just set up the one-to-one relationship of two-dimensional space position of physical address and each LED lamp of each LED lamp radio frequency unit, and this corresponding relation is stored in first storage unit of said control desk; Said control desk also comprises first radio frequency unit; First radio frequency unit of this control desk sends to the radio frequency unit of each LED lamp grouies busy instruction, and the corresponding relation of the positional information 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 first storage unit and each LED lamp is made comparisons, and finds out the position of each LED lamp of replying; The LED lamp of radio frequency unit signal covering radius one half-distance that will be positioned at control desk is as first order LED lamp group, with 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 to each LED lamp grouies busy instruction, and the LED lamp of the second level LED lamp group of replying and the LED lamp in this first order LED lamp group are set up the many-one radio frequency communication link.The radio frequency unit of second LED lamp of first order LED lamp group sends to each LED lamp grouies busy instruction; Remove with said 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; Other LED lamps in the 2nd LED lamp group of replying and second LED lamp in the LED lamp group are set up the many-one radio frequency communication link; And the like; The radio frequency unit of n LED lamp of first order LED lamp group sends to each LED lamp grouies busy instruction, removes the LED lamp of setting up radio frequency communication link with said first to n-1 LED lamp, and 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 the many-one radio frequency communication link; Each LED lamp of first order LED lamp group sends to each LED lamp one by one grouies busy instruction; After treating that LED lamp in n-1 LED lamp and the second level LED lamp group is set up radio frequency communication link, n LED lamp sends to each LED lamp grouies busy that instruction, n are the natural number greater than 1.According to above-mentioned method and with identical principle manually is set deduces and can know; As shown in Figure 6; The radio frequency unit of n LED lamp of N level LED lamp group sends to each LED lamp grouies busy instruction, removes the LED lamp of setting up radio frequency communication link with said n-1 LED lamp, and other LED lamps of replying and this n LED lamp are set up the many-one radio frequency communication link; Each LED lamp of N level LED lamp group sends to each LED lamp one by one grouies busy instruction; After treating that LED lamp in n-1 LED lamp and the N+1 level LED lamp group is set up radio frequency communication link, n LED lamp sends to each LED lamp grouies busy that instruction, n are the natural number greater than 1.
Set up after the network topology structure; If there is a LED lamp power supply trouble to occur in each LED lamp, cause the radio frequency unit cisco unity malfunction, then this LED lantern festival is broken off with whole communication network and being connected; If the LED lamp that breaks down is the LED of a main website lamp; Then also can break off with whole communication network with each slave station LED lamp that main website LED lamp is set up one-to-many radio communication and being connected, certain, this situation is unallowed.The present invention has adopted following method to solve the problem of above-mentioned existence:
First radio frequency unit of said control desk comprises that also first connects signal detection module; Said first radio frequency unit regularly sends paging instructions and receives the instruction of replying that each LED lamp of said first order LED lamp group sends to each LED lamp of the first order LED lamp group that is connected with control desk; The said first connection signal detection module is used to detect replys the time that instruction is returned; And judge that whether this time is greater than certain threshold values; Reply time of returning of instruction greater than certain threshold values when said, then judge the signal interruption that is connected between this LED lamp of said control desk and first order LED lamp group, at this LED lamp of said first order LED lamp group with after control desk is connected signal interruption; First control module of control desk is controlled first radio frequency unit and is sent to each LED lamp and group busy instruction; Then promptly carry out the work that network topology structure is set up again, its principle of work is identical with the principle that this above-mentioned system sets up network topology structure for the first time, repeats no more at this; LED lamp in the said first order LED lamp group comprises that also second connects signal detection module; The radio frequency unit of the LED lamp in the said first order LED lamp group regularly LED lamp in the second level LED lamp group that is connected with a LED lamp sends paging instructions and receives the instruction of replying that LED lamp in the LED lamp group of the said second level sends; The second connection signal detection module of the LED lamp in the said first order LED lamp group is used to detect replys the time that instruction is returned; And judge that whether this time is greater than certain threshold values; When said time of replying instruction during greater than certain threshold values; Judge that then the LED lamp in the first order LED lamp group is connected signal interruption with LED lamp in the LED lamp group of the second level; LED lamp in said first order LED lamp group is with after LED lamp in the LED lamp group of the second level is connected signal interruption, and first LED lamp in the first order LED lamp group sends to each LED lamp grouies busy instruction, then promptly carries out the work of network topology structure foundation again.The principle of work of the LED lamp in each LED lamp of other LED lamp groups at different levels and the first order LED lamp group is identical; That is: n LED lamp in the said N level LED lamp group comprises that also N+1 connects signal detection module; The radio frequency unit of n LED lamp in the said N level LED lamp group regularly to N+1 level LED lamp group that this n LED lamp is connected in the LED lamp send paging instructions and receive the instruction of replying that LED lamp in the said N+1 level LED lamp group sends; The N+1 connection signal detection module of n LED lamp in the said N level LED lamp group is used to detect replys the time that instruction is returned; And judge that whether this time is greater than certain threshold values; When said time of replying instruction during greater than certain threshold values; Judge that then n LED lamp in the N level LED lamp group is connected signal interruption with LED lamp in the N+1 level LED lamp group, n LED lamp in said N level LED lamp group is with after the LED lamp in the N+1 level LED lamp group is connected signal interruption, and n LED lamp in the N level LED lamp group sends to each LED lamp grouies busy instruction; Then promptly carry out the work that network topology structure is set up again, repeat no more at this.
After having set up radio frequency communication network; Said control desk can send to each LED lamp with steering order through this radio frequency communication network, and in fact the duty of the luminescence unit of each LED lamp is not all to upgrade all the time, if the steering order of the duty of the luminescence unit of each LED lamp all need be sent through control desk all the time; Then can cause very big burden to communication network; Under the not good situation of radiofrequency signal, temporary interruption can appear in the signal transmission, and because the instability of wireless network signal; The problem that causes signal transmission delay easily further can make the luminescence unit duty of each LED lamp nonsynchronous problem occur.So it is as above-mentioned; At each LED lamp storage unit is set; Be used to store the branch steering order of each LED lamp luminescence unit work of control, lose when being connected, for can be when control end loses connection at the control desk sometimes and a certain LED lamp of first order LED lamp group; Each LED of main website lamp still can be controlled the work of connected slave station LED lamp; The LED lamp of said first order LED lamp group also comprises second storage unit, and said second storage unit is used to store the instruction of the LED lamp work of controlling second level LED lamp group to the N level LED lamp group, and said steering order is the steering order that controller sends; LED lamp in the LED lamp group of the said second level comprises second control module, and said second control module sends to the steering order of said second cell stores on the LED lamp of second level LED lamp group to the N level LED lamp group.That is: each the LED lamp in the said N level LED lamp group comprises the N+1 storage unit; Said N+1 storage unit is used to store the instruction of control N+1 level LED lamp group work; Each LED lamp in the said N level LED lamp group comprises the N+1 control module, and said N+1 control module sends to each the LED lamp in the N+1 level LED lamp group with the steering order of said N+1 cell stores; Said N+1 storage unit also is used for storing the work order of each LED lamp of N level LED lamp group, and the steering order that said N+1 control module obtains the N+1 storage unit is controlled each LED lamp work in the N level LED lamp group.
After each LED lamp is provided with storage unit; The control module of each LED lamp can call the steering order control luminescence unit work of cell stores; Perhaps the LED lamp of N+1 level LED lamp group also can directly be controlled by the LED lamp in the N level LED lamp group; Because the steering order of the work of LED lamp can be separate in the LED lamp groups at different levels; The time data of its work reads from the crystal oscillator of the control module of each LED lamp, because crystal oscillator meeting time of occurrence error in long-term use, so nonsynchronous problem can appear in the duty of each LED lamp luminescence unit.
In order to address this problem; First control module of said control desk is controlled first radio frequency unit regularly to each LED lamp tranmitting data register beat; The radio frequency unit of each LED lamp receives said timeticks and stores and call; After having corrected the time error of each LED lamp crystal oscillator like this, can realize this LED control system broadcast synchronously.
Certainly, produce the problem of disturbing for fear of said LED control system and extraneous wireless signal, each the LED lamp in the control system of LED lamp of the present invention is the work of circulation frequency hopping under 200～300 frequencies of 2.4G frequency range.
In the 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 used for to radio frequency unit, control module, storage unit, driver element and luminescence unit power supply, and driver element is used to obtain the steering order control luminescence unit work of control module, though each LED lamp physical arrangement is identical; But the network service principle of each LED lamp in the control system of said LED lamp is different, but can substitute mutually again.
What should explain is; Above embodiment is only unrestricted in order to technical scheme of the present invention to be described; Although with reference to preferred embodiment the present invention is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention; And not breaking away from the spirit and the scope of technical scheme of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (10)
1. LED display system; This display system comprises a control desk and a plurality of LED lamp, it is characterized in that, said a plurality of LED lamps are arranged in the multi-stage LED lamp group; Each grade LED lamp group comprises a plurality of LED lamps; LED lamp in the N level LED lamp group and each the LED lamp in the N+1 level LED lamp group carry out the radio communication of one-to-many, and each the LED lamp in said control desk and the first order LED lamp group carries out the radio communication of one-to-many, and N is a natural number.
2. LED display system according to claim 1 is characterized in that, each LED lamp comprises a radio frequency unit, and the radio frequency unit signal of the LED lamp in the N level LED lamp group covers the LED lamp in N+1 level LED lamp group and the N+2 level LED lamp group.
3. LED display system according to claim 2; It is characterized in that; Said control desk also comprises first storage unit; Be used to store 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.
4. LED display system according to claim 3; It is characterized in that; Said control desk also comprises first radio frequency unit; First radio frequency unit of this control desk sends to the radio frequency unit of each LED lamp grouies busy instruction, and the corresponding relation of the positional information 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 first storage unit and each LED lamp is made comparisons, and finds out the position of each LED lamp of replying; The LED lamp of radio frequency unit signal covering radius one half-distance that will be positioned at control desk is as first order LED lamp group, with other LED lamp as second level LED lamp group.
5. LED display system according to claim 4; It is characterized in that; The radio frequency unit of the one LED lamp of N level LED lamp group sends to each LED lamp grouies busy instruction, and the LED lamp and a LED lamp of the N+1 level LED lamp group of replying are set up the many-one radio frequency communication link.
6. LED display system according to claim 5; It is characterized in that; The radio frequency unit of n LED lamp of N level LED lamp group sends to each LED lamp grouies busy instruction; Remove the LED lamp of setting up radio frequency communication link with said first to n-1 LED lamp; Other LED lamps in the N+1 level LED lamp group of replying and n LED lamp in this N level LED lamp group are set up the many-one radio frequency communication link, and each LED lamp of N level LED lamp group sends to each LED lamp one by one grouies busy instruction, treat that n-1 LED lamp and the LED lamp in the N+1 level LED lamp group in the N level LED lamp group set up radio frequency communication link after; N LED lamp in the N level LED lamp group sends to each LED lamp grouies busy that instruction, n are the natural number greater than 1.
7. LED display system according to claim 6; It is characterized in that; First radio frequency unit of said control desk comprises that also first connects signal detection module; Said first radio frequency unit regularly sends paging instructions and receives the instruction of replying that each LED lamp of said first order LED lamp group sends to each LED lamp of the first order LED lamp group that is connected with control desk; The said first connection signal detection module is used to detect replys the time that instruction is returned; And whether judge this time greater than certain threshold values, and reply time of returning of instruction greater than certain threshold values when said, then judge the signal interruption that is connected between this LED lamp of said control desk and first order LED lamp group; With after control desk is connected signal interruption, first control module of control desk is controlled first radio frequency unit and is sent to each LED lamp and group busy instruction at this LED lamp of said first order LED lamp group; N LED lamp in the said N level LED lamp group comprises that also N+1 connects signal detection module; The radio frequency unit of n LED lamp in the said N level LED lamp group regularly to N+1 level LED lamp group that this n LED lamp is connected in the LED lamp send paging instructions and receive the instruction of replying that LED lamp in the said N+1 level LED lamp group sends; The N+1 connection signal detection module of n LED lamp in the said N level LED lamp group is used to detect replys the time that instruction is returned; And judge that whether this time is greater than certain threshold values; When said time of replying instruction during greater than certain threshold values; Judge that then n LED lamp in the N level LED lamp group is connected signal interruption with LED lamp in the N+1 level LED lamp group; N LED lamp in said N level LED lamp group is with after the LED lamp in the N+1 level LED lamp group is connected signal interruption, and n LED lamp in the N level LED lamp group sends to each LED lamp grouies busy instruction.
8. according to the arbitrary described LED display system of claim 1-7; It is characterized in that; Each LED lamp in the said N level LED lamp group comprises the N+1 storage unit; Said N+1 storage unit is used to store the instruction of control N+1 level LED lamp group work, and each the LED lamp in the said N level LED lamp group comprises the N+1 control module, and said N+1 control module sends to each the LED lamp in the N+1 level LED lamp group with the steering order of said N+1 cell stores; Said N+1 storage unit also is used for storing the work order of each LED lamp of N level LED lamp group, and the steering order that said N+1 control module obtains the N+1 storage unit is controlled each LED lamp work in the N level LED lamp group.
9. LED display system according to claim 1 is characterized in that, first control module of said control desk is controlled first radio frequency unit regularly to each LED lamp tranmitting data register beat, and the radio frequency unit of each LED lamp receives said timeticks and stores and call.
10. LED display system according to claim 1 is characterized in that, each LED lamp is the work of circulation frequency hopping under 200～300 frequencies of 2.4G frequency range.
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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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| CN102622959A true CN102622959A (en) | 2012-08-01 |
| CN102622959B CN102622959B (en) | 2014-05-21 |
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| WO (1) | WO2013020305A1 (en) |
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Also Published As
| Publication number | Publication date |
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| CN102622959B (en) | 2014-05-21 |
| WO2013020305A1 (en) | 2013-02-14 |
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