CN105609021A - Quick detection method for aviation display - Google Patents
Quick detection method for aviation display Download PDFInfo
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- CN105609021A CN105609021A CN201510958445.5A CN201510958445A CN105609021A CN 105609021 A CN105609021 A CN 105609021A CN 201510958445 A CN201510958445 A CN 201510958445A CN 105609021 A CN105609021 A CN 105609021A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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Abstract
The invention discloses a quick detection method for an aviation display, and the aviation display is an integrated aviation display. The method comprises the following steps: carrying out unlocking through a display coded lock control unit; sending a self-detection instruction to a display CPU; enabling the display CPU to carry out periodic self-detection; collecting the working state data of all modules in the display; enabling a graphic drive unit to receive a control instruction sent by the display CPU; generating an autonomous graphic through the collected data; converting the information of the autonomous graphic into an RGB signal, and transmitting the RGB signal to a video processing unit; enabling the video processing unit to carry out the analysis of Chinese characters, letters, digits and special symbols of the autonomous graphic, and generating an LVDS signal; and enabling the display to complete the drawing and displaying of the graphic after the display receives the LVDS signal. The method achieves the integration of the product displaying of an aviation display terminal with background detection equipment, executes the detection of an onboard display conveniently and quickly, completes the attribute detection and fault isolation and display of the display, shortens the maintenance period of the onboard display, and achieves the onboard fault detection.
Description
Technical field
The present invention relates to a kind of method for quick, relate in particular to a kind of method for quick of aviation display, belong to aviation electronics display control program.
Background technology
Aviation display is arranged in aircraft cockpit chamber, the ambient influnences such as Yin Gaowen, high radiation, strong motion, and display in use can produce as display frame lacks look, fan is opened the various faults such as inefficacy. Conventional method is: lower electric dismounting of display, by ground power supply system, some bright display, re-uses test facilities and instruments display is carried out to fault reproduction and abnormal location. Adopt this detection method to have on the one hand the problem that detection efficiency is low, on the other hand under ground environment, may reproduction machine on the problem of fault. Therefore, to realize on machine fault detect very necessary for display.
Summary of the invention
The object of the invention is to solve above-mentioned technical problem, propose a kind of method for quick of aviation display.
The present invention is achieved by the following technical solutions: a kind of method for quick of aviation display, described aviation display is integral type aviation display, it comprises display and is integrated in graphics driver unit, display CPU, video processing unit, the display coded lock control unit in display, and described method for quick comprises the steps:
A, release enter self-inspection step, and carry out release and send self-checking command to display CPU by display coded lock control unit,
B, self-inspection step, the self-inspection of display cpu cycle property, the operating state data of the each module of collection display interior,
C, produce step from main graphic, graphics driver unit receives the control instruction that display CPU sends, the data that gather are produced from main graphic,
D, Video processing step, convert rgb signal to from the information of main graphic and transfer to video processing unit, and the parsing that the information from main graphic is carried out man, letter, numeral and additional character by video processing unit generates LVDS signal,
E, step display, display completes graphic plotting and shows after receiving LVDS signal.
Further, in described step a, display coded lock control unit has brightness+key, brightness and subtracts key, contrast+key, contrast and subtract key, carries out release and self-inspection operation by brightness+key and contrast+key.
Further, in described step b, interface processing module, power module, closed loop test road, A/D modular converter, AMLCD communication, SINS communication, USMC communication, AMU communication in display CPU detection display device.
Beneficial effect of the present invention:
Realize aviation display terminal and show the integrated of product and backstage checkout equipment, on execution machine, display detects quickly and easily, completes display characteristics inspection, Fault Isolation and demonstration, shortens the airborne indicator time between overhauls(TBO), realizes fault detect on machine.
Brief description of the drawings
Fig. 1 is the flow chart of the method for quick of a kind of aviation display of the present invention.
Detailed description of the invention
The invention provides a kind of method for quick of aviation display, aviation display is integral type aviation display, it comprises display and is integrated in graphics driver unit, display CPU, video processing unit, the display coded lock control unit in display, as shown in the flow chart of Fig. 1, method for quick comprises the steps:
Release enters self-inspection step, carry out release and send self-checking command to display CPU by display coded lock control unit, refinement, display coded lock control unit has brightness+key, brightness and subtracts key, contrast+key, contrast and subtract key, carries out release and self-inspection operation by brightness+key and contrast+key.
Self-inspection step, the self-inspection of display cpu cycle property, gather the operating state data of display interior each module, interface processing module in display CPU detection display device, power module, closed loop test road, A/D modular converter, AMLCD communication, SINS communication, USMC communication, AMU communication etc.
Produce step from main graphic, graphics driver unit receives the control instruction that display CPU sends, the data that gather are produced from main graphic,
Video processing step, converts rgb signal to from the information of main graphic and transfers to video processing unit, and the parsing that the information from main graphic is carried out man, letter, numeral and additional character by video processing unit generates LVDS signal,
Step display, display completes graphic plotting and shows after receiving LVDS signal.
The present invention is based on cabin avionics system, display is under normal mode of operation, not by the not external checkout equipment of DMP switching command, parsing display button cipher instruction independently switches to safeguards detecting pattern, detect to realize display characteristics on machine, trouble shooting, the approach that Fault Isolation and fault show.
Low for the original aviation display product of our factory maintainability, product bug detects the problems such as poor efficiency. A kind of method of having invented fast detecting aviation display fault, its concrete steps are as follows:
In specific embodiment, graphics driver unit completes the generation from main graphic according to display CPU control instruction, and export rgb signal to display interior video processing unit, to complete the parsing of Chinese character, letter, numeral and additional character, and export LCDs to LVDS signal and complete graphic plotting. Graphics driver unit hardware framework adopts AlteraEP2C35F484I8+DSPTS201 pattern;
Display cpu cycle self-inspection, the duty of collection display interior power module, LCD MODULE, interface processing module and video processing unit etc.; Whether the communication between detection display device and cross-linking apparatus is normal, data whether wrap by packet loss mistake; Display duty is as temperature, brightness, day and night pattern, key-press status, video channel etc.; Once the exceptional value of detecting, is stored in exceptional value and correlative in flash as generation time, trigger condition etc.;
Display coded lock control unit, display is operated under normal mode, press for the first time after brightness+key when detecting, and then press continuously contrast+key 7 times, and then press in order respectively brightness+key again 1 time, contrast+key 1 time, brightness+key 1 time, when between any two adjacent key, the time interval is not more than 1 second simultaneously, display release, enters and safeguards detecting pattern; Under display maintenance detecting pattern, no longer activating pin unlocking function is pressed brightness+key and contrast+key simultaneously, and display is locked, and finishes to safeguard to detect to revert to normal mode of operation;
Display characteristics detects and Fault Isolation shows, display enters to be safeguarded after detecting pattern, can detect crucial display characteristic, as effective display area, brightness uniformity, tonal gradation, keypress function, color measurement, and control figure driver element following figure of corresponding drafting on display by CPU: black matrix white edge rectangle frame (being of a size of display width × demonstration height), black matrix stack white rectangle piece (being of a size of display width/10 × display width/10), color gray scale is passed rank and is shown (64 grades), peripheral key is depressed and is shown virtual key and add frame, display plane is carried out N × M decile, each subdivision that waits shows a kind of color. also can be according to decision condition, whether identification display interior self-detection result is normal, and normal result is with green font mark, and abnormal results is with yellow font mark, and fault data is with red font mark, and controls figure driver element, realizes above-mentioned picture disply. above-mentioned picture can be by specific keys control, completes picture cycle and switch demonstration.
The present invention still has numerous embodiments, and all employing equivalents or equivalent transformation and all technical schemes of forming, within all dropping on protection scope of the present invention.
Claims (3)
1. the method for quick of an aviation display, described aviation display is integral type aviation display, it comprises display and is integrated in graphics driver unit, display CPU, video processing unit, the display coded lock control unit in display, it is characterized in that described method for quick comprises the steps:
A, release enter self-inspection step, and carry out release and send self-checking command to display CPU by display coded lock control unit,
B, self-inspection step, the self-inspection of display cpu cycle property, the operating state data of the each module of collection display interior,
C, produce step from main graphic, graphics driver unit receives the control instruction that display CPU sends, the data that gather are produced from main graphic,
D, Video processing step, convert rgb signal to from the information of main graphic and transfer to video processing unit, and the parsing that the information from main graphic is carried out man, letter, numeral and additional character by video processing unit generates LVDS signal,
E, step display, display completes graphic plotting and shows after receiving LVDS signal.
2. the method for quick of a kind of aviation display according to claim 1, it is characterized in that: in described step a, display coded lock control unit has brightness+key, brightness and subtracts key, contrast+key, contrast and subtract key, carries out release and self-inspection operation by brightness+key and contrast+key.
3. the method for quick of a kind of aviation display according to claim 1, it is characterized in that: in described step b, interface processing module, power module, closed loop test road, A/D modular converter, AMLCD communication, SINS communication, USMC communication, AMU communication in display CPU detection display device.
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| CN201510958445.5A CN105609021B (en) | 2015-12-20 | 2015-12-20 | A kind of rapid detection method of aviation displays |
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| CN106066546A (en) * | 2016-06-02 | 2016-11-02 | 南京巨鲨显示科技有限公司 | A kind of display and method that can automatically repair screen bad point |
| CN106097993A (en) * | 2016-06-06 | 2016-11-09 | 湖南中岳显控科技股份有限公司 | Highlighted high-resolution super-small image source drive circuit |
| CN108538262A (en) * | 2017-12-07 | 2018-09-14 | 罗克韦尔柯林斯公司 | Freeze passive and non-invasive monitoring and the report of liquid crystal display |
| CN109254881A (en) * | 2018-09-27 | 2019-01-22 | 湖南中车时代通信信号有限公司 | A kind of diagnostic method and system based on hot backup redundancy display fault |
| CN109493775A (en) * | 2018-12-20 | 2019-03-19 | 深圳市锐明技术股份有限公司 | Show detection method, device and the terminal device of failure |
| CN113963655A (en) * | 2021-10-29 | 2022-01-21 | 中航华东光电有限公司 | High-reliability airborne display control system based on FPGA |
| CN115376437A (en) * | 2022-08-27 | 2022-11-22 | 亿慧云智能科技（深圳）股份有限公司 | Display method and system of display panel |
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| CN113963655B (en) * | 2021-10-29 | 2024-02-09 | 中航华东光电有限公司 | High-reliability airborne display control system based on FPGA |
| CN115376437A (en) * | 2022-08-27 | 2022-11-22 | 亿慧云智能科技（深圳）股份有限公司 | Display method and system of display panel |
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