CN101592292A - A kind of LED pixel barrel of embedded with redundancy fault-tolerant control chip - Google Patents
A kind of LED pixel barrel of embedded with redundancy fault-tolerant control chip Download PDFInfo
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- CN101592292A CN101592292A CNA2009100832971A CN200910083297A CN101592292A CN 101592292 A CN101592292 A CN 101592292A CN A2009100832971 A CNA2009100832971 A CN A2009100832971A CN 200910083297 A CN200910083297 A CN 200910083297A CN 101592292 A CN101592292 A CN 101592292A
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Abstract
The invention discloses a kind of LED pixel barrel of embedded with redundancy fault-tolerant control chip, comprise light transmitting shell, lamp body, heat dissipation metal face shield; Described light transmitting shell is provided with a louvre at least, and described lamp body is provided with: pcb board; Be arranged on the LED luminescence unit on the pcb board, comprise at least one LED lamp; Chip, control LED luminescence unit is luminous.Adopt the redundancy fault-tolerant chip to reduce system failure rate, adopt the heat dissipation metal face shield to solve the pixel barrel heat dissipation problem well.
Description
Technical field
The present invention relates to the application that a kind of LED shows, specifically, relate to a kind of LED pixel barrel of embedded with redundancy fault-tolerant control chip.
Background technology
The pixel barrel of institute's extensive use in the market, it is commonly: with light emitting diode R, G, the B (R is that red light emitting diodes, B are that blue LED, G are green LED) of three kinds of colors, elementary cell as a luminous point, i.e. pixel, and form a pixel barrel by plastic packaging, encapsulating.With the rgb pixel tube is elementary cell, forms LED display and finishes the demonstration purpose.
But owing to all be that employing is connected in series between prior art chips and the chip, and drive control chip and have only bars control circuit transmission signal, when this signal controlling circuit disconnects or other mistakes take place, will have a strong impact on connected device, cause the equal no signal input of connected chip, the LED light emitting diode also all can not be worked.
Redundancy is meant some parts of repeated configuration system, and when system broke down, the work of trouble unit is got involved and born to the parts of redundant configuration; The fault-tolerant system that is meant still can continue the function of operate as normal when its a certain component faults, fault tolerance generally is to realize by redundant component.The assurance system breaks down or technology that still can operate as normal during mistake is called fault-toleranr technique at some part.Can be divided into two classes from the fault of system: a class is " fatal ", can not repair voluntarily, and for example the critical piece of system all damages; Another kind of is local, may be repaired the mistake that for example subelement inefficacy, line fault, accidental interference cause etc.The redundancy fault-tolerant technology utilizes redundant component to construct a kind of technology that can get rid of the non-lethal fault automatically just.
Because the embedded with redundancy fault-tolerant chip can bring the technical problem of system radiating burden increase, therefore, also do not occur the redundancy fault-tolerant technology is applied to the LED pixel barrel simultaneously, solve the technical scheme of heat dissipation problem simultaneously.
Summary of the invention
Technical problem to be solved by this invention is at the deficiencies in the prior art, and a kind of LED pixel barrel of embedded with redundancy fault-tolerant control chip is provided.
Technical scheme of the present invention is as follows:
A kind of LED pixel barrel of embedded with redundancy fault-tolerant control chip comprises light transmitting shell, lamp body, heat dissipation metal face shield;
Described light transmitting shell is provided with a louvre at least;
Described lamp body is provided with: pcb board; Be arranged on the LED luminescence unit on the pcb board, comprise at least one LED lamp; Chip, control LED luminescence unit is luminous; Described pcb board is fixedly installed on the inside of described light transmitting shell;
At least include a redundancy fault-tolerant control chip in the described chip;
At least two signal input parts of described redundancy fault-tolerant control chip setting and quantity is identical with it signal output part, at least one local output and arbitration modules; By each described signal input part and at least two cascade channels of each described signal output part setting, described arbitration modules is used to judge the validity of each cascade channel, and adopts the output of the output of effective cascade channel as invalid cascade channel; Described local output is connected to described LED luminescence unit, is used to control that it is luminous;
Described heat dissipation metal face shield forms the latticed face shield that holds the LED lamp by heat-conducting metal, fixedlys connected with described pcb board.
Described LED pixel barrel, described light transmitting shell is provided with two louvres at least; Described pcb board is fixedly installed on the inside of described light transmitting shell, and its both sides are provided with a louvre at least.
Described LED pixel barrel, each described louvre is symmetrically distributed in the both sides of described pcb board.
Described LED pixel barrel, described LED lamp adopts circular inserts formula light emitting diode, semicircle cylindrical inserts formula light emitting diode, oval plug-in type light emitting diode at least, semicircle plug-in type light emitting diode, oblate plug-in type optical diode, rectangular insert formula light emitting diode, surface-mount type light emitting diode one of them.
Described LED pixel barrel, each described local output connect respectively and control a LED lamp.
Described LED pixel barrel also comprises the driving chip, and it is arranged between the local output and described LED luminescence unit of described redundancy fault-tolerant control chip, is used to receive the control information of described redundancy fault-tolerant control chip, and it is luminous to drive described LED luminescence unit.
Described LED pixel barrel, described LED luminescence unit comprise a red LED lamp, a blue led lamp, a green LED lamp; Described redundancy fault-tolerant control chip is provided with three local outputs, is connected with each LED lamp respectively.
Described LED pixel barrel, described redundancy fault-tolerant control chip comprise four signal input parts and four signal output parts, constitute four cascade channels.
Described LED pixel barrel also comprises an indicating member; The described redundancy fault-tolerant control chip setting indication end that reports an error, it links to each other with described indicating member, is used for when described redundancy fault-tolerant control chip breaks down, and the output error index signal is to described indicating member.
Described LED pixel barrel wherein, also comprises lens, and described lens are fixedlyed connected with described light transmitting shell.
As can be seen from the above technical solutions, the present invention has following beneficial effect:
1, adopt redundancy fault-tolerant control chip connected in series, chip has at least two signal controlling circuits that walk abreast and have functions of redundancy and fault tolerance, control signal has a heavy above Redundancy Design, when wherein a bars control circuit breaks down, control signal can also not influence the operate as normal of LED light emitting diode and other chips by other parallel signal controlling circuit transmission.
2, redundancy fault-tolerant control chip has the deixis of reporting an error, when redundancy fault-tolerant control chip itself makes a mistake, redundancy fault-tolerant control chip can upload to control system with packet by circuit, and control system can be carried out errors present according to the information that chip is passed back and be judged; Also can show mistake, make maintenance very convenient by external LED light.
3, realize single lamp brilliance control, conveniently the brightness of each lamp point is proofreaied and correct, realize better white balance effect.
4, each LED lamp can flexibly connect with lamp socket, replacing for convenience detach, and can change the position of LED lamp as required.
Description of drawings
Fig. 1-A is the schematic diagram of the embodiment of the invention 1;
Fig. 1-B is the schematic diagram of heat dissipation metal face shield of the present invention;
Fig. 2 is the schematic diagram of the embodiment of the invention 2;
Fig. 3 is the schematic diagram of the embodiment of the invention 3;
Fig. 4 is the schematic diagram of the embodiment of the invention 4.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1
As Fig. 1-A, a kind of LED pixel barrel of embedded with redundancy fault-tolerant control chip comprises light transmitting shell, lamp body and heat dissipation metal face shield, and at least one louvre is set on the light transmitting shell housing, carries out heat loss through convection, is provided with in the lamp body: pcb board; Be arranged on the LED luminescence unit on the pcb board, comprise at least one LED lamp; Chip, it is luminous that this chip is used to control the LED luminescence unit, chip can be arranged on the pcb board and LED lamp opposing backside surface, at least include a redundancy fault-tolerant control chip in the chip, at least two signal input parts of this chip setting, at least two signal output parts, at least one local output and arbitration modules, described signal input part is connected by arbitration modules with described signal output part, constitute at least two cascade signal passages, arbitration modules is judged the validity of described cascade channel according to line signal frequency or signal voltage or the like feature, and, also promptly use the output signal of the output signal of effective cascade channel as this invalid cascade channel at invalid cascade channel with the output that is outputted to effective cascade channel of invalid cascade channel; The heat dissipation metal face shield is fixedly connected on the pcb board, and the heat dissipation metal face shield can use heat-conducting metal die casting to form the latticed face shield (shown in Fig. 1-B) that holds the LED lamp, and is separate between each grid.The use redundancy fault-tolerant control chip has improved the fault-tolerant ability of pixel barrel like this, has reduced the fault rate of pixel barrel, uses the heat dissipation metal face shield that the heat of chip in the pixel barrel and the generation of LED lamp is conducted by louvre, avoids parts to cross cause thermal damage.
Preferably, light transmitting shell is provided with two louvres at least, and pcb board is fixedly installed on the inside of light transmitting shell, and its both sides also are provided with a louvre at least, and above-mentioned each louvre is symmetrically distributed in the both sides of pcb board, can improve radiating effect like this;
In order to increase light transmittance, perhaps obtain certain light efficiency (disperse or parallel etc.) can be in light transmitting shell inside or external stability connect an optical lens, can select convex lens or concavees lens as required, also can select colored lens etc., can use transparent resin, also can use materials such as lucite, acryl, satisfy the needs of different application environment, build special light efficiency.
Install for convenience, can draw the inserting foot of some quantity at the outer casing bottom of pixel barrel according to circuit conditions, such as five inserting foots can be set, comprise a power pins, two input signal pins, two output signal pins, be used for the applied environment of plug and play, be convenient for changing simultaneously.
Another example, above-mentioned LED pixel barrel also comprises a LED lamp socket, this LED lamp socket is fixedlyed connected with pcb board, can use screw to fix, can fix by soldering, fixed form the present invention does not limit yet, and LED lamp and lamp socket flexibly connect, such as being plugged on the above-mentioned lamp socket by the pin of LED lamp, perhaps use the LED that has the Luo mouth to be screwed on the above-mentioned lamp socket, like this, for convenience detach, be convenient for changing, and the position of lamp and lamp can exchange.
Another example, in the above-mentioned LED pixel barrel, chip preferably adopts fixed (BONDING) packaged type of group or one of DIP packaged type or SOP packaged type on the plate, saves the PCB space, reduces the pixel barrel internal heat resource simultaneously, avoids pixel barrel to cross cause thermal damage.
Another example, above-mentioned LED pixel barrel, the LED lamp preferably adopts circular inserts formula light emitting diode, half-cylindrical plug-in type light emitting diode, oval plug-in type light emitting diode, one of semicircle plug-in type light emitting diode, oblate plug-in type optical diode, rectangular insert formula light emitting diode, surface-mount type light emitting diode, adopt the light emitting diode of above-mentioned shape, with low cost, radiating effect is better.
Another example, above-mentioned LED pixel barrel, each LED lamp in the pixel barrel is controlled separately, be that each drive output drives a LED lamp separately, can carry out independently single lamp brightness adjustment to the red, green, blue look LED lamp on each pixel barrel like this, single lamp brightness adjustment is convenient to realize white balance effect preferably.
Embodiment 2
Be illustrated in figure 2 as a kind of cascade structure of pixel barrel in application of embedded with redundancy fault-tolerant chip, this chip has two parallel signal input parts and two parallel signal output parts, two signal input parts are used for the input of cascade control signal 1 and cascade control signal 2, two signal output parts are used for cascade control signal 1 and 2 outputs of cascade control signal, this chip provides two identical signal controlling circuits by two circuits of opposite transmission direction, is respectively applied for transmitting stage joint control system signal 1 and cascade control signal 2; The LED luminescence unit is made up of red light emitting diodes R, green LED G, blue LED B and resistance R 1, R2, R3, and the LED lamp is connected with R1, R2, R 3 respectively; Positive source circuit VCC and power cathode circuit GND provide voltage to circuit; Control signal 1 and control signal 2 that last level controlling system sends are input to redundancy fault-tolerant control chip by two bars inputs, and the local data output by redundancy fault-tolerant control chip directly connects the LED luminescence unit again, and the driving LED luminescence unit is luminous; When the wherein any line failure of control signal circuit, the arbitration modules of redundancy fault-tolerant control chip inside all can self check and be switched to another control signal circuit operation in real time; Redundancy fault-tolerant control chip also has the indication end of reporting an error, when redundancy fault-tolerant control chip makes a mistake, redundancy fault-tolerant control chip sends to indicating member by the indication end (not shown) that reports an error with rub-out signal, indicating member can use LED light to report to the police, also can use buzzer warning, the attendant promptly knows abort situation according to the indication of LED lamp or the voice signal of buzzer, convenient maintenance.。
Embodiment 3
See Fig. 3, the inner integrated special constant-current of pixel barrel drives chip as different from Example 2, this constant-current driven chip links to each other with the local output of redundancy fault-tolerant control chip, the drive output of constant-current driven chip links to each other with the LED lamp cathode by series resistor, pass through constant-current driven chip, according to this locality output data of control chip, finish the driving of LED lamp, control LED light and shade changes.Use the advantage of special driving chip to be, drive current control is convenient, working stability, and display effect is better.
See Fig. 4, four signal input parts of redundancy fault-tolerant control chip, four signal output parts, three local outputs and arbitration modules, described signal input part links to each other respectively with described signal output part, constitute four cascade signal passages, described arbitration modules is used to judge the validity of described cascade channel, and with the output signal that is outputted to any one effective cascade channel of invalid cascade channel, this chip provides four control signal circuits transmission of control signals 1 respectively by mutually perpendicular four circuits of transmission direction, control signal 2, control signal 3 and control signal 4, when in the control signal circuit during any line failure, the self check of the equal energy of arbitration modules also switches to the cascade channel of other three parallel normal conditions in real time, when at least one signal input part between the adjacent redundancy fault-tolerant control chip and a signal output part energy operate as normal, but the equal operate as normal of pixel barrel.Therefore, the display screen fault rate that adopts this pixel barrel to form can greatly be reduced.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection domain of claims of the present invention.
Claims (10)
1, a kind of LED pixel barrel of embedded with redundancy fault-tolerant control chip is characterized in that: comprise light transmitting shell, lamp body, heat dissipation metal face shield;
Described light transmitting shell is provided with a louvre at least;
Described lamp body is provided with: pcb board; Be arranged on the LED luminescence unit on the pcb board, comprise at least one LED lamp; Chip, control LED luminescence unit is luminous; Described pcb board is fixedly installed on the inside of described light transmitting shell;
At least include a redundancy fault-tolerant control chip in the described chip;
At least two signal input parts of described redundancy fault-tolerant control chip setting and quantity is identical with it signal output part, at least one local output and arbitration modules; By each described signal input part and at least two cascade channels of each described signal output part setting, described arbitration modules is used to judge the validity of each cascade channel, and adopts the output of the output of effective cascade channel as invalid cascade channel; Described local output is connected to described LED luminescence unit, is used to control that it is luminous;
Described heat dissipation metal face shield forms the latticed face shield that holds the LED lamp by heat-conducting metal, fixedlys connected with described pcb board.
2, LED pixel barrel according to claim 1 is characterized in that, described light transmitting shell is provided with two louvres at least; Described pcb board is fixedly installed on the inside of described light transmitting shell, and its both sides are provided with a louvre at least.
3, LED pixel barrel according to claim 2 is characterized in that, each described louvre is symmetrically distributed in the both sides of described pcb board.
4, LED pixel barrel according to claim 1, it is characterized in that, described LED lamp adopts circular inserts formula light emitting diode, semicircle cylindrical inserts formula light emitting diode, oval plug-in type light emitting diode at least, semicircle plug-in type light emitting diode, oblate plug-in type light emitting diode, rectangular insert formula light emitting diode, surface-mount type light emitting diode one of them.
5, LED pixel barrel according to claim 1 is characterized in that, each described local output connects respectively and controls a LED lamp.
6, LED pixel barrel according to claim 1, it is characterized in that: also comprise the driving chip, it is arranged between the local output and described LED luminescence unit of described redundancy fault-tolerant control chip, be used to receive the control information of described redundancy fault-tolerant control chip, it is luminous to drive described LED luminescence unit.
7, according to the arbitrary described LED pixel barrel of claim 1 to 6, it is characterized in that: described LED luminescence unit comprises a red LED lamp, a blue led lamp, a green LED lamp; Described redundancy fault-tolerant control chip is provided with three local outputs, is connected with each LED lamp respectively.
8, according to the arbitrary described LED pixel barrel of claim 1 to 6, it is characterized in that: described redundancy fault-tolerant control chip comprises four signal input parts and four signal output parts, constitutes four cascade channels.
9, according to the arbitrary described LED pixel barrel of claim 1 to 6, it is characterized in that: also comprise an indicating member; The described redundancy fault-tolerant control chip setting indication end that reports an error, it links to each other with described indicating member, is used for when described redundancy fault-tolerant control chip breaks down, and the output error index signal is to described indicating member.
10, according to the arbitrary described LED pixel barrel of claim 1 to 6, it is characterized in that: also comprise lens, described lens are fixedlyed connected with described light transmitting shell.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100832971A CN101592292A (en) | 2009-04-30 | 2009-04-30 | A kind of LED pixel barrel of embedded with redundancy fault-tolerant control chip |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100832971A CN101592292A (en) | 2009-04-30 | 2009-04-30 | A kind of LED pixel barrel of embedded with redundancy fault-tolerant control chip |
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| CN101592292A true CN101592292A (en) | 2009-12-02 |
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| CNA2009100832971A Pending CN101592292A (en) | 2009-04-30 | 2009-04-30 | A kind of LED pixel barrel of embedded with redundancy fault-tolerant control chip |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107218543A (en) * | 2017-07-21 | 2017-09-29 | 厦门乾照照明有限公司 | A kind of LED projector lamp |
| WO2021244050A1 (en) * | 2020-06-05 | 2021-12-09 | 广州市浩洋电子股份有限公司 | Uniquely shaped display screen, uniquely shaped pixel light, and control method for uniquely shaped pixel light |
| US11436960B2 (en) | 2020-06-05 | 2022-09-06 | Guangzhou Haoyang Electronic Co., Ltd. | Special-shaped display screen, special-shaped pixel light, and control method thereof |
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| US11436960B2 (en) | 2020-06-05 | 2022-09-06 | Guangzhou Haoyang Electronic Co., Ltd. | Special-shaped display screen, special-shaped pixel light, and control method thereof |
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Application publication date: 20091202 |