CN102147996B - Expressway variable message plate with LED tube fault detection - Google Patents
Expressway variable message plate with LED tube fault detection Download PDFInfo
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- CN102147996B CN102147996B CN 201010106780 CN201010106780A CN102147996B CN 102147996 B CN102147996 B CN 102147996B CN 201010106780 CN201010106780 CN 201010106780 CN 201010106780 A CN201010106780 A CN 201010106780A CN 102147996 B CN102147996 B CN 102147996B
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Abstract
The invention discloses an expressway variable message plate with LED tube fault detection, which comprises a power circuit, a main control plate of the variable message plate, a personal computer (PC) machine, a special constant current chip for the LED tube with a fault detection function, a fault special detection plate and an LED tube. The main control plate of the variable message plate comprises an automatic voltage regulation (AVR) high speed single chip, which is characterized in that: the PC machine is connected with the AVR high speed single chip of the main control plate of the variable message plate; the AVR high speed single chip is connected with the special constant current chip for LED; the special constant current chip for LED is connected with the LED tube; the special constant current chip for LED is connected with the special detection plate; and the special detection plate is connected to the AVR high speed single chip. The coordinate, color and fault type of the tube in fault can be read on the PC control machine, so that the maintenance man can know about the screen board LED more intuitively. The bad site environment can be overcome and the error and maintenance difficulty caused by the environment can be avoided.
Description
Technical field:
The present invention relates to the highway variable information board of a kind of LED of having fluorescent tube fault detect, be mainly used in the detection of LED fluorescent tube fault in the highway LED variable information advices plate.
Background technology:
In recent years, various LED electronic displays are applied in the every field of China, various environment.Especially when the LED fluorescent tube breaks down in the highway LED variable information advices plate, LED producer sent directly maintenance and inspection comprehensively at the scene of maintenance personal in the past, this not only wants the expensive time, and is listed as hidden LED problem suddenly easily, and LED is installed in the various environment, or because of thick fog, or heavy rain, or sweltering heat etc., impact for people's sight line, can not find the trouble spot exactly, because on-the-spot various conditionalities thereby cause maintenance difficult.Because the LED variable information board generally is to be applied successively to various abominable outdoor environments in 24 hours, and it is on-the-spot special, inspection is inconvenient, so the fault detect of a kind of LED fluorescent tube is provided, can detect the LED fluorescent tube use state of on-the-spot each equipment at remote control center accurately and efficiently, be a problem that will solve of the present invention.
Summary of the invention:
The object of the present invention is to provide a kind of highway variable information board that can use a kind of LED of having fluorescent tube fault detect of state at the LED fluorescent tube that remote control center detects on-the-spot each equipment accurately and efficiently.
The object of the present invention is achieved like this: described a kind of highway variable information board with the fault detect of LED fluorescent tube, comprise power circuit, the variable information board master control borad, PC and by LED fluorescent tube special constant-current chip and fault dedicated detector board and the LED fluorescent tube of tape jam measuring ability, the variable information board master control borad comprises the AVR high-speed microprocessor, its design feature is that described PC is connected with the AVR high-speed microprocessor of variable information board master control borad, the AVR high-speed microprocessor is connected with LED special constant-current chip, LED special constant-current chip is connected with the LED fluorescent tube, LED special constant-current chip is connected with dedicated detector board, and dedicated detector board is connected to the AVR high-speed microprocessor.
Purpose of the present invention can also be achieved through the following technical solutions, described a kind of highway variable information board with the fault detect of LED fluorescent tube, its characteristics are that LED special constant-current chip employing model is the chip of MBI5027, and it is the single-chip microcomputer of ATMEGA64-16 that the AVR high-speed microprocessor adopts model.
Advantage of the present invention: 1) technology of the present invention makes the fault detect of LED fluorescent tube be accurate to ranks, color; In the past, LED producer sends directly maintenance and inspection comprehensively at the scene of maintenance personal, this not only wants the expensive time, and ignore hidden LED problem easily, yet fine this problem that solved of the appearance of LED fluorescent tube detection technique, it can read fluorescent tube coordinate, color, the fault type of fault at the PC controller, makes maintenance personal's more intuitive understanding screen board LED situation.2) the technology of the present invention overcomes abominable site environment, avoids the mistake and the maintenance difficult that cause because of environment; LED is installed in the various environment, or thick fog, or heavy rain, or sweltering heat etc., impact for people's sight line, can accurately not find the trouble spot.And this technology is reacted into coordinate intuitively with the trouble spot, overcomes various rugged surroundings.3) the technology of the present invention can also detect the defective fluorescent tube point of brightness, makes screen board brightness more even, and visual effect is better; Because the LED fluorescent tube has indivedual somes brightness not enough, but the naked eyes short time observe and ignore easily, if work long hours the easy bad point of the not enough fluorescent tube of brightness, detect with LED and can detect this hidden danger, on-call maintenance makes the brightness of screen body more even.4) the technology of the present invention has reduced maintenance personal's maintenance risk, has shortened the on-site maintenance time; Because the maintenance personal detects the LED fault at PC, to analyze reason and go maintenance again, this has shortened most of servicing time; And advices plate is installed on the highway, and various immesurable factors cause maintenance personal's height maintenance risk, and the technology of the present invention has shortened servicing time, has also reduced maintenance frequency, has also avoided the risk of the long-time maintenance of maintenance personal.5) the technology of the present invention has improved the efficient of maintenance, has reduced the maintenance cost of factory department, the maintenance waste of avoiding vision to cause.Because the LED abort situation of screen board that the maintenance personal is clear and definite, direct maintenance failure point has been avoided former inspection fault and the maintain and replace test carried out, improves maintenance efficiency greatly, gives the lower maintenance cost of factory department, also gives the more economic benefit of factory department.
Embodiment:
The present invention that becomes a partner below is elaborated:
A kind of highway variable information board with the fault detect of LED fluorescent tube of the present invention, comprise power circuit, the variable information board master control borad, PC and by LED fluorescent tube special constant-current chip and fault dedicated detector board and the LED fluorescent tube of tape jam measuring ability, variable information board be shown as prior art, the LED special constant-current chip of tape jam measuring ability generally can adopt the chip of MBI5027 model, the variable information board master control borad comprises the AVR high-speed microprocessor, the AVR high-speed microprocessor generally adopts the single-chip microcomputer of ATMEGA64-16 model, described PC is connected with the AVR high-speed microprocessor of variable information board master control borad, the AVR high-speed microprocessor is connected with LED special constant-current chip, LED special constant-current chip is connected with the LED fluorescent tube, LED special constant-current chip is connected with dedicated detector board, and dedicated detector board is connected to the AVR high-speed microprocessor.All above-mentioned chips etc. are powered by power circuit.The fault dedicated detector board is carried out coordinate scanning by LED special constant-current chip to LED display ranks fluorescent tube, and the data that obtain are carried out fault decoding calculation process, the LED fluorescent tube fault coordinate data that obtains the most at last is transferred on the PC of control center through the AVR high-speed microprocessor, be reflected on the visual interface by software, and do corresponding failure logging on the backstage automatically.
The LED detection is the software and hardware compounding technique that the PC of a kind of instant transmission, immediate feedback is connected with the screen body.
Send detection of code at PC and enter the error detection pattern through the AVR high-speed microprocessor to the master control of screen body, the CLK waveform is through 3 cycles, OE, LE, CLK all enter detected state, from SKO1 to SKOn, send testing image according to the order of sequence by master control, to the scanning of screen body LED fluorescent tube procession, the LED fluorescent tube fault coordinate data that obtains the most at last is transferred on the PC of control center after the AVR high-speed microprocessor is handled.
As shown in Figure 2, PC shields body master control feedack after receiving been scanned, send " read detect error code " instruction again, CLK and OE enter reading state, the fault dedicated detector board is to reading to such an extent that the data waveform carries out the sheet choosing, decoding is analyzed one by one, if inerrancy is just shown to PC by AVR high-speed microprocessor feedback normal code; Otherwise the computing of decoding, enter read error sign indicating number state, each cycle of CLK is a pixel, it is unusual in which cycle appearance of CLK to analyze the SKO data-signal, can draw LED mistake row coordinate, analyze according to voltage, can draw concrete fault type, each group SKOx has corresponding row, definitions of color.The row of the SKOx that extraction makes mistakes, color code and LED go out the stagger arrangement coordinate code and feed back to PC, show after being handled by PC software.The AVR high-speed microprocessor starts through screen board sampling demonstration, detects plate and selects cycle detection SDO1 to SDOn, and check-out console carries out waveform relatively.Waveform is normal, feeds back to the AVR high-speed microprocessor, and master control feeds back to PC; Waveform is undesired, carrying out the fault detect decoding with the CLK wave period analyzes, calculate the coordinate of wrong waveform, color and fault type, feed back on the PC of control center by the transmission of AVR high-speed microprocessor, be reacted on the visual interface by software, and at the corresponding failure logging of backstage automated back-up.
Claims (1)
1. highway variable information board with the fault detect of LED fluorescent tube, comprise power circuit, the variable information board mainboard, PC and by LED fluorescent tube special constant-current chip and fault dedicated detector board and the LED fluorescent tube of tape jam measuring ability, the variable information board master control borad comprises the AVR high-speed microprocessor, it is characterized in that described PC is connected with the AVR high-speed microprocessor of variable information board master control borad, the AVR high-speed microprocessor is connected with LED special constant-current chip, LED special constant-current chip is connected with the LED fluorescent tube, LED special constant-current chip is connected with dedicated detector board, and dedicated detector board is connected to the AVR high-speed microprocessor;
It is the chip of MBI5027 that LED special constant-current chip adopts model, and it is the single-chip microcomputer of ATMEGA64-16 that the AVR high-speed microprocessor adopts model;
Send detection of code at PC and enter the error detection pattern through the AVR high-speed microprocessor to the master control of screen body, the CLK waveform is through 3 cycles, OE, LE, CLK all enter detected state, from SKO1 to SKOn, send testing image according to the order of sequence by master control, to the scanning of screen body LED fluorescent tube procession, the LED fluorescent tube fault coordinate data that obtains the most at last is transferred on the PC of control center after the AVR high-speed microprocessor is handled;
PC shields body master control feedack after receiving been scanned, send " read detect error code " instruction again, CLK and OE enter reading state, the fault dedicated detector board is to reading to such an extent that the data waveform carries out the sheet choosing, decoding is analyzed one by one, if inerrancy is just shown to PC by AVR high-speed microprocessor feedback normal code; Otherwise the computing of decoding, enter read error sign indicating number state, each cycle of CLK is a pixel, it is unusual in which cycle appearance of CLK to analyze the SKO data-signal, draw LED mistake row coordinate, analyze according to voltage, draw concrete fault type, each group SKOx has corresponding row, definitions of color;
The row of the SKOx that extraction makes mistakes, color code and LED go out the stagger arrangement coordinate code and feed back to PC, show after being handled by PC software; The AVR high-speed microprocessor starts through screen board sampling demonstration, detects plate and selects cycle detection SDO1 to SDOn, and check-out console carries out waveform relatively; Waveform is normal, feeds back to the AVR high-speed microprocessor, and master control feeds back to PC; Waveform is undesired, carrying out the fault detect decoding with the CLK wave period analyzes, calculate the coordinate of wrong waveform, color and fault type, feed back on the PC of control center by the transmission of AVR high-speed microprocessor, be reacted on the visual interface by software, and at the corresponding failure logging of backstage automated back-up.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010106780 CN102147996B (en) | 2010-02-05 | 2010-02-05 | Expressway variable message plate with LED tube fault detection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010106780 CN102147996B (en) | 2010-02-05 | 2010-02-05 | Expressway variable message plate with LED tube fault detection |
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| CN102147996A CN102147996A (en) | 2011-08-10 |
| CN102147996B true CN102147996B (en) | 2013-07-17 |
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| CN 201010106780 Expired - Fee Related CN102147996B (en) | 2010-02-05 | 2010-02-05 | Expressway variable message plate with LED tube fault detection |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020191537A1 (en) * | 2019-03-22 | 2020-10-01 | 深圳市大像视讯科技有限公司 | Led display screen artificial intelligence detection |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201242810Y (en) * | 2008-06-26 | 2009-05-20 | 南京汉德森科技股份有限公司 | Control device for traffic induce system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201242810Y (en) * | 2008-06-26 | 2009-05-20 | 南京汉德森科技股份有限公司 | Control device for traffic induce system |
Non-Patent Citations (2)
| Title |
|---|
| 《失点检测系统在LED显示屏中的应用》;深圳雷曼光电科技有限公司;《现代显示》;20071231(第11期);第65-67页第4部分 * |
| 深圳雷曼光电科技有限公司.《失点检测系统在LED显示屏中的应用》.《现代显示》.2007,(第11期),第65-67页第4部分. |
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| CN102147996A (en) | 2011-08-10 |
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