CN104778911A - Point inspection method of LED sign board as well as LED display control card - Google Patents
Point inspection method of LED sign board as well as LED display control card Download PDFInfo
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- CN104778911A CN104778911A CN201510194758.8A CN201510194758A CN104778911A CN 104778911 A CN104778911 A CN 104778911A CN 201510194758 A CN201510194758 A CN 201510194758A CN 104778911 A CN104778911 A CN 104778911A
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Abstract
The invention relates to a point inspection method of an LED sign board. The point inspection method comprises the following steps as follows: (a) sending point inspection data to the LED sign board so as to drive the LED sign board to perform point inspection; (b) receiving a point inspection result data string, representing states of multiple LED lamp points of the LED sign board, returned by the LED sign board; (c) according to the point inspection result data string as well as a corresponding relation table of point inspection result data positions and LED lamp point coordinates, generating a point inspection result graph so as to check point inspection results. The invention further provides an LED display control card capable of executing the point inspection method. Through the adoption of the point inspection method, the point inspection result graph is provided in a visual way for checking the point inspection results of the LED sign board, such as an LED oil price card, so that a user can intuitively find which LED lamp points fail and which LED lamp points are normal in the LED sign board according to the point inspection result graph.
Description
Technical field
The present invention relates to display technique field, particularly a kind of detecting method of LED display board and a kind of LED display control card.
Background technology
LED oil price board with its power saving, energy-saving and environmental protection, safe, easy to operate, brightness is high, light transmissibility is strong etc., and a series of feature attracts eyeball, become a kind of novel oil price display board, be applied to refuelling station, there are wide market outlook.
But, owing to being subject to the restriction in electronic component serviceable life or causing the impact of the reasons such as partial circuit component wear in transportation, part lamp point may be caused normally to show.Oil price is shown imperfect, even mistake, makes troubles to user and consumer or loses.So, the LED point of oil price board is tested the necessity just seemed very.
General LED point inspection is based on trouble light point statistics, and the information that user obtains usually only has the quantity of trouble light point or the ratio of trouble light point.This spot check mode lacks practical significance for the application scenarios showing the such key message of oil price.
Usually, multiple " 8 " words be arranged in by LED (lamp point) constitute the display section of oil price board, show " 0-9 " ten numerals by the different lamp points controlling to form " 8 " word.The general detecting method based on trouble light point statistics is that the data returned according to spot check count always the counting of LED point on oil price board respectively, trouble light is counted, then calculate the number percent shared by trouble light point, afterwards using these three data as spot check result feedback to user.In order to the general deficiency of detecting method in oil price display application scene based on trouble light point statistics is described, as shown in Figure 1, oil price board to be formed the LED point of " 8 " word pattern, suppose the blockage representing fault lamp point that the cross hatch in Fig. 1 (a) is filled, all the other blockages represent normal lamp point, when then showing numeral 1 and 7, its display effect is shown in Fig. 1 (b), that is there is display mistake; The little square frame that Fig. 1 (b) bend is filled represents the LED point normally lighted.Should export based on the spot check result of the detecting method of trouble light point statistics and be: " total lamp is counted: 130, and trouble light is counted: 14, trouble light point rate: 10.8% ".
Be not difficult to find, due to the impact of trouble light point, numeral " 7 " has been shown as " 1 ", this grave error, and the information that user cannot be provided by spot check result at all finds.Obviously, the spot check result of trouble light point statistics can not reflect the normal display whether trouble light point has had influence on oil price accurately, and the quantity of information provided is fewer, and the cost making user do decision-making uprises, and accuracy rate reduces, and reaction velocity is slack-off.
Summary of the invention
Therefore, for deficiency of the prior art, the present invention proposes a kind of detecting method of LED display board and a kind of LED display control card.Particularly, the detecting method of a kind of LED display board that the embodiment of the present invention provides, wherein said LED display board is provided with the multiple LED point according to predetermined pattern arrangement and is controlled by LED display control card and carries out pattern displaying; Described detecting method comprises step: (a) sends spot check data to described LED display board and carry out spot check to drive described LED display board; B () receives the spot check result data string of multiple LED dotted state described in representative that described LED display board returns; C () generates spot check result figure, for checking spot check result according to spot check result data string and spot check result data position and LED point coordinate mapping table.
In one embodiment of the invention, in above-mentioned steps (c), lamp point distribution in described spot check result figure is consistent with the distribution of the described multiple LED points on described LED display board, and described spot check result is desired to make money or profit with different colors representing fault lamp point and normal lamp point respectively.
In one embodiment of the invention, above-mentioned detecting method is executed in described LED display control card, and described detecting method also comprises step: prestore described spot check result data position and LED point coordinate mapping table extremely described LED display control card.
In one embodiment of the invention, above-mentioned steps (c) comprising: calculate the size of the described spot check result figure for generating and create onesize painting canvas; Scan described spot check result data string to obtain each spot check result data position in described spot check result data string and corresponding spot check result data thereof; Utilize obtain each spot check result data position enquiring described in spot check result data position with LED point coordinate mapping table to obtain each corresponding LED point coordinate; Carry out coordinate conversion to calculate the drafting coordinate of each LED point coordinate on described painting canvas; And on described painting canvas, draw out the lamp point corresponding respectively with the described multiple LED points on described LED display board according to the drafting coordinate calculated and on the lamp point drawn, embody the spot check result data of LED point corresponding thereto, thus generate described spot check result figure.
In one embodiment of the invention, the spot check result data of the LED point above-mentioned lamp point drawing embodied corresponding thereto is by utilizing different colours representative to realize without the spot check result data of value.
In one embodiment of the invention, above-mentioned LED display board is LED oil price board, and described predetermined pattern comprises " 8 " word pattern.
In addition, a kind of LED display control card that the embodiment of the present invention provides, carries out image display for control LED display board, and wherein said LED display board is provided with the multiple LED points according to predetermined pattern arrangement; Described LED shows that control card comprises: spot check driver module, shows that board carries out spot check to drive described LED display board for sending spot check data to described LED; Spot check result receiver module, shows the spot check result data string of multiple LED dotted state described in the representative that board returns for receiving described LED; And spot check result figure generation module, for generating spot check result figure, for checking spot check result according to spot check result data string and spot check result data position and LED point coordinate mapping table.
In one embodiment of the invention, above-mentioned LED shows that control card also comprises: memory module, for prestoring described spot check result data position and LED point coordinate mapping table.
In one embodiment of the invention, above-mentioned spot check result figure generation module comprises: painting canvas creates submodule, for calculating the size of the described spot check result figure for generating and creating onesize painting canvas; Spot check result scanning submodule, for scanning described spot check result data string to obtain each spot check result data position in described spot check result data and corresponding spot check result data thereof; Lamp point coordinate obtains submodule, for utilizing spot check result data position described in each spot check result data position enquiring of acquisition and LED point coordinate mapping table to obtain each corresponding LED point coordinate; Coordinate conversion submodule, for carrying out coordinate conversion to calculate the drafting coordinate of each LED point coordinate on described painting canvas; And lamp point-rendering submodule, distribute with the described multiple LED points on described LED display board lamp point corresponding and the spot check result data embodying LED point corresponding thereto on the lamp point drawn for drawing out on described painting canvas according to the drafting coordinate that calculates.
In one embodiment of the invention, above-mentioned lamp point-rendering submodule utilizes different colours to embody the spot check result data of different value.
As from the foregoing, the embodiment of the present invention adopts visual means to provide the spot check result of spot check result figure for checking LED display board such as LED oil price board, according to spot check result figure, user can find in LED display board, which LED point is fault intuitively, which LED point is normal, thus judges whether trouble light point can affect the normal display of target pattern (such as oil price).
By the detailed description below with reference to accompanying drawing, other side of the present invention and feature become obvious.But it should be known that this accompanying drawing is only the object design of explanation, instead of as the restriction of scope of the present invention, this is because it should with reference to additional claim.Should also be appreciated that, unless otherwise noted, unnecessaryly draw accompanying drawing to scale, they only try hard to structure described herein and flow process are described conceptually.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Fig. 1 be the trouble light point schematic diagram of " 8 " the word pattern be made up of multiple LED point in LED oil price board and its carry out the display view of digital 1 & 7.
Fig. 2 is the process schematic of the detecting method of a kind of LED display board of the relevant embodiment of the present invention.
Fig. 3 is the trouble light point schematic diagram of " 8 " the word pattern be made up of multiple LED point in the LED display board of the relevant embodiment of the present invention and the spot check result figure schematic diagram of its correspondence.
Fig. 4 is a kind of high-level schematic functional block diagram of LED display control card in Fig. 2.
Fig. 5 is the function sub-modules schematic diagram of spot check result figure generation module in Fig. 4.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.
Refer to Fig. 2, the detecting method of a kind of LED display board that the embodiment of the present invention provides is suitable for performing on LED display control card 33.LED display board 31 be provided with according to predetermined pattern arrangement multiple LED points, " 8 " word pattern that the display board of LED shown in Fig. 3 (a) is made up of multiple LED point and hypothesis cross hatch fill blockage be trouble light point; It should be noted that, the Pareto diagram of the LED point on LED display board 31 is not limited to " 8 " word, also can be multiple " 8 " word or one or more letter, can also be numeral and alphabetical combination.LED display board 31 is such as connected to LED display control card 33 by two netting twines, and in the present embodiment, LED display board 31 is such as LED oil price board, but the present invention is not as limit.LED display control card 33 is such as LED Asynchronism Card, and it typically comprises the hardware such as embedded microprocessor (such as ARM microprocessor) and programmable logic device (PLD) (such as FPGA).Moreover LED display control card 33 such as can be connected with server (not shown) by network interface access network, and user terminal (not shown) can be connected and access services device or LED display control card 33 by network; Certainly, in certain embodiments, user terminal also connects LED display control card 33 by other interface such as serial ports.
Hold above-mentioned, in the detecting method of the LED display board of the present embodiment, the spot check order (or claim spot check control signal) that LED display control card 33 receives user terminal sends spot check data afterwards and carries out spot check to LED display board 31 with driving LED display board 31, returned the spot check result data string representing multiple LED dotted state on it afterwards by LED display board 31, such as, be binary data string and normal lamp point can be represented with " 0 " representing fault lamp point, " 1 "; After LED display control card 33 receives the spot check result data string that LED display board 31 returns, spot check result figure can be generated according to spot check result data string and the spot check prestored result data position and LED point coordinate mapping table, check spot check result at user terminal.Be understandable that, in other embodiments, LED display control card 33 also can not directly generate spot check result figure, but the spot check result data string received is uploaded onto the server, by server to generate spot check result figure.
Below in conjunction with Fig. 3, the spot check result figure generating principle of the present embodiment is described in detail:
In the present embodiment, spot check result figure is with the state of each LED point on the form of picture reflection LED display board, such as, on picture, round dot (blockage in corresponding diagram 3 (b)) represents a LED point on LED display board, the distribution of round dot distributes consistent with the LED point on LED display board, round dot characterizes the state of LED point by different colors, such as red expression trouble light point, the normal lamp point of green expression.
Generally, the preliminary work that spot check result figure generates has following two:
(1) coordinate system of relative position between each LED point on LED display board is set up.For the LED display board of any one specification, as long as specification is determined, so on LED display board, the LED point distribution of the LED point distribution such as " 8 " that display one is digital of display pattern just can be determined.Because be only concerned about the distribution of LED point here, the relative position namely between LED point; So the distance in regulation x-axis, y-axis between two adjacent LEDs lamp point is unit 1, like this LED point forming " 8 " word is placed in coordinate system, just can determines the relative coordinate position (value) of each LED point.For " 8 " word wide × height be 11 × 22 LED display board, as shown in Fig. 3 (a), each lattice in figure represents a LED point, by setting up such relative coordinate system, just can give each LED point coordinate figure, referred to herein as LED point coordinate.
(2) spot check result data position and LED point coordinate mapping table is set up.LED display board spot check result data string is that the binary data string be made up of a string " 0 " or " 1 " represents, " 0 " represents trouble light point, and " 1 " represents normal lamp point; Each " 0 " or " 1 " represent the state of at least one LED point on LED display board, for the LED display board that each specification is determined, the value in binary data string on each position and the corresponding relation between the point of the LED corresponding to it can be determined, LED point LED point coordinate is replaced, just can set up a corresponding relation between spot check result data position and LED point coordinate.If the point of the LED representated by blockage of arrow indication in first (spot check result data position is 1) corresponding diagram 3 (a) in the binary data string returned, then LED point coordinate (11 can be used, 10) this LED point is represented, just can set up one group of corresponding relation that " 1-(11; 10) " are such, by that analogy, such corresponding relation can be set up for each LED point (or each Data Position in binary data string), form a mapping table, for the use of follow-up generation spot check result figure.
Next a kind of spot check result map generalization process of the present embodiment will be described in detail:
Generate spot check result figure and draw out the picture of each LED dotted state on the reaction LED display board corresponding with LED display board according to the spot check result data string (Binary Zero/1 string) returned and the spot check result data position set up in advance with LED point coordinate mapping table.This draws flow process can be divided into following 5 steps:
I () creates painting canvas
The fundamental purpose of this step is the size (pixel wide × pixel is high) that will calculate spot check result figure, then creates onesize painting canvas (or claiming blank picture) according to the size calculated.Particularly, " 8 " word for the LED point Pareto diagram on LED display board, first the pixel size of " 8 " word can be calculated, if the LED point number forming the transverse direction (x-axis direction) of " 8 " word is Nx, longitudinally the LED point number in (y-axis direction) is Ny; In the spot check result figure drawn, the diameter of a lamp point (such as representing a lamp point with round dot) is D pixel, gap laterally between (x-axis direction) adjacent two lamp points is Gx pixel, and the gap longitudinally between (y-axis direction) adjacent two lamp points is Gy pixel.So, pixel wide W8=Nx × D+ (Nx+1) × Gx, pixels tall H8=Ny × D+ (the Ny+1) × Gy of " 8 ".If LED display board is made up of M " 8 " word, so, the pixel wide of spot check result figure is the pixel wide (W8 × M) of M " 8 " word, and pixels tall is the pixels tall (H8) of " 8 " word.
(ii) spot check result data string is scanned
The fundamental purpose of this step is scanning binary data string or reads by turn, obtains the value (0/1) on spot check result data position and correspondence position.If a string spot check result data that to have now " 0111 ... " such, scanning or when reading, get spot check result data position (as first) be 1 spot check result data values be 0, by that analogy.
(iii) LED point coordinate is obtained
The fundamental purpose of this step be utilize in step (ii) scan each spot check result data position of obtaining the spot check result data position set up in advance with search LED point coordinate (x, y) corresponding to each spot check result data position in LED point coordinate mapping table.
(iv) coordinate conversion
Because LED point coordinate uses relative coordinate, be merely able to characterize the relative position between LED point.So, need when drawing to calculate its drafting coordinate on painting canvas according to the relative coordinate of LED point.Suppose to draw the parameters such as the diameter of lamp point with arrange in step (i) the same, the coordinate having now a LED point is (x, y), so its drafting coordinate (D8x in " 8 " word, D8y) D8x=x × D+ (x+1) × Gx, D8y=y × D+ (y+1) × Gy.If current LED point belongs to M (M >=1) individual " 8 " word, then the Dx=(M-1) × W8+D8x, Dy=D8y of its drafting coordinate (Dx, Dy) in whole spot check result figure.
V () draws lamp point
According to the drafting coordinate (Dx calculated in step (iv), Dy) and step (ii) in obtain the value (0/1) of sign LED dotted state and the diameter D of lamp point-rendering, the upper drafting round dot of painting canvas (blank picture) that just can create in step (i) or other suitable shape represent this LED point, the state of the color-coded LED point of round dot, the such as normal lamp point of green expression, red expression trouble light point.So far, spot check result figure generates complete, the spot check result figure of such as, " 8 " word pattern shown in Fig. 3 (b).
Refer to Fig. 4 and Fig. 5, the embodiment of the present invention also provides a kind of LED display control card being suitable for the detecting method performing aforementioned LED display board.As shown in Figure 4, the LED display control card 33 of the present embodiment comprises spot check driver module 331, spot check result receiver module 333, spot check result figure generation module 335 and memory module 337; These modules can be run on the software module on LED display control card 33.Wherein, spot check driver module 331 carries out spot check to LED display board with driving LED display board for sending spot check data; The spot check result data string of representative its multiple LED dotted state of spot check result receiver module 333 for receiving LED display board and returning; Spot check result figure generation module 335 is for generating spot check result figure, for checking spot check result according to spot check result data string and spot check result data position and LED point coordinate mapping table; Memory module 337 for prestoring spot check result data position and LED point coordinate mapping table, for the use generating spot check result figure.
Hold above-mentioned, as shown in Figure 5, spot check result figure generation module 335 functionally can also be subdivided into: painting canvas creates submodule 3351, spot check result scanning submodule 3353, the acquisition of lamp point coordinate submodule 3355, coordinate conversion submodule 3357 and lamp point-rendering submodule 3359.Wherein, painting canvas creates submodule 3351 for calculating the size of the spot check result figure for generating and creating onesize painting canvas; Spot check result scanning submodule 3353 is for scanning spot check result data string to obtain each spot check result data position in spot check result data string and corresponding spot check result data thereof; Lamp point coordinate obtains submodule 3355 for utilizing each spot check result data position enquiring spot check result data position of acquisition and LED point coordinate mapping table to obtain each corresponding LED point coordinate; Coordinate conversion submodule 3357 is for carrying out coordinate conversion to calculate the drafting coordinate of each LED point coordinate on painting canvas; And lamp point-rendering submodule 3359 for drawing out the lamp point corresponding respectively with each LED point on LED display board according to the drafting coordinate calculated and embody the spot check result data (spot check state) of LED point corresponding thereto on the lamp point drawn on painting canvas.
Described herein, each functional module 331 ~ 337 of LED display control card 33 and the concrete function details of each sub-function module 3351 ~ 3359 with reference to the related description of aforesaid detecting method, therefore can repeat no more.
In sum, the above embodiment of the present invention adopts visual means to provide the spot check result of spot check result figure for checking LED display board such as LED oil price board, according to spot check result figure, user can find in LED display board, which LED point is fault intuitively, which LED point is normal, thus judges whether trouble light point can affect the normal display of target pattern (such as oil price).
So far, apply specific case herein to set forth the detecting method of a kind of LED display board of the present invention and a kind of principle of LED display control card and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention; all will change in specific embodiments and applications; in sum, this description should not be construed as limitation of the present invention, and protection scope of the present invention should be as the criterion with appended claim.
Claims (10)
1. a detecting method for LED display board, wherein said LED display board is provided with the multiple LED point according to predetermined pattern arrangement and is controlled by LED display control card and carries out pattern displaying; It is characterized in that, described detecting method comprises step:
A () sends spot check data to described LED display board and carries out spot check to drive described LED display board;
B () receives the spot check result data string of multiple LED dotted state described in representative that described LED display board returns;
C () generates spot check result figure, for checking spot check result according to spot check result data string and spot check result data position and LED point coordinate mapping table.
2. detecting method as claimed in claim 1, it is characterized in that, in described step (c), lamp point distribution in described spot check result figure is consistent with the distribution of the described multiple LED points on described LED display board, and described spot check result is desired to make money or profit with different colors representing fault lamp point and normal lamp point respectively.
3. detecting method as claimed in claim 1, it is characterized in that, described detecting method is executed in described LED display control card, and described detecting method also comprises step: prestore described spot check result data position and LED point coordinate mapping table extremely described LED display control card.
4. detecting method as claimed in claim 1, it is characterized in that, described step (c) comprising:
Calculate the size of the described spot check result figure for generating and create onesize painting canvas;
Scan described spot check result data string to obtain each spot check result data position in described spot check result data string and corresponding spot check result data thereof;
Utilize obtain each spot check result data position enquiring described in spot check result data position with LED point coordinate mapping table to obtain each corresponding LED point coordinate;
Carry out coordinate conversion to calculate the drafting coordinate of each LED point coordinate on described painting canvas;
On described painting canvas, draw out the lamp point corresponding respectively with the described multiple LED points on described LED display board according to the drafting coordinate calculated and on the lamp point drawn, embody the spot check result data of LED point corresponding thereto.
5. detecting method as claimed in claim 4, is characterized in that, the spot check result data of the LED point that the described lamp point drawing embodies corresponding thereto is that the spot check result data by utilizing different colours to represent different value realizes.
6. detecting method as claimed in claim 1, it is characterized in that, described LED display board is LED oil price board, and described predetermined pattern comprises " 8 " word pattern.
7. a LED display control card, carries out image display for control LED display board, and wherein said LED display board is provided with the multiple LED points according to predetermined pattern arrangement; It is characterized in that, described LED display control card comprises:
Spot check driver module, carries out spot check for sending spot check data to described LED display board to drive described LED display board;
Spot check result receiver module, for receiving the spot check result data string of multiple LED dotted state described in representative that described LED display board returns;
Spot check result figure generation module, for generating spot check result figure, for checking spot check result according to spot check result data string and spot check result data position and LED point coordinate mapping table.
8. LED display control card as claimed in claim 7, is characterized in that, also comprise:
Memory module, for prestoring described spot check result data position and LED point coordinate mapping table.
9. LED display control card as claimed in claim 1, it is characterized in that, described spot check result figure generation module comprises:
Painting canvas creates submodule, for calculating the size of the described spot check result figure for generating and creating onesize painting canvas;
Spot check result scanning submodule, for scanning described spot check result data string to obtain each spot check result data position in described spot check result data string and corresponding spot check result data thereof;
Lamp point coordinate obtains submodule, for utilizing spot check result data position described in each spot check result data position enquiring of acquisition and LED point coordinate mapping table to obtain each corresponding LED point coordinate;
Coordinate conversion submodule, for carrying out coordinate conversion to calculate the drafting coordinate of each LED point coordinate on described painting canvas;
Lamp point-rendering submodule, for drawing out the lamp point corresponding respectively with the described multiple LED points on described LED display board according to the drafting coordinate calculated and embody the spot check result data of LED point corresponding thereto on the lamp point drawn on described painting canvas.
10. LED display control card as claimed in claim 9, it is characterized in that, described lamp point-rendering submodule utilizes different colours to embody the spot check result data of different value.
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