CN1328748C - Intelligent detecting discriminator for distortion and flexion characteristic error of color electron gun - Google Patents
Intelligent detecting discriminator for distortion and flexion characteristic error of color electron gun Download PDFInfo
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- CN1328748C CN1328748C CNB2005100419393A CN200510041939A CN1328748C CN 1328748 C CN1328748 C CN 1328748C CN B2005100419393 A CNB2005100419393 A CN B2005100419393A CN 200510041939 A CN200510041939 A CN 200510041939A CN 1328748 C CN1328748 C CN 1328748C
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Abstract
The present invention discloses an intelligent detecting discriminator for the distortion and flexion characteristic error of a color electron gun, which comprises a mechanical positioning unit, a sample holding unit, a two-way optical image signal acquisition unit, an image gathering unit, an image blending processing unit, a man-machine interaction interface based on a virtual instrument and a data storage display unit thereof, wherein image processing software and electron gun distortion and flexion error measuring software are arranged in the image blending processing unit. The present invention is mainly used for on-line detection and discrimination for the distortion error and the flexion error of the color electron gun, and is also used for the inspection and scaling for off-line finished products. The present invention has the detection and discrimination functions to the distortion error and the flexion error of various types of electron guns, and the detection speed is higher than a conventional mode by about 10 times; the main performance indexes, such as detection accuracy, detection speed, one machine with multiple functions, consistency of product detection and discrimination, etc., all achieve a leading level in the industry. In addition, the present invention can be used for the automatic detection of the distortion and flexion of a display electron gun by slightly modifying the processing software of the intelligent detecting discriminator.
Description
Technical field
The invention belongs to based on the measuring instrument field of instrumentation technology, relate to a kind of detector, further relate to a kind of colored picture tube electron gun distortion and flexural property error Intelligent Measurement decision instrument.
Background technology
At present, in colored picture tube electron gun twist and warping degree detection technique field, when detected electrons rifle distortion error and bending error, adopt mechanical device measurement, the artificial perusal of microscope to estimate bending error; Adopt mechanical optics measurement device, artificial perusal image information to estimate distortion error again; The two is traditional conventional method and equipment entirely.Its metering system will be through the artificial mechanism operation, perusal, loaded down with trivial details step such as estimation error, the detection of each sample need repeat loading and unloading on two kinds of checkout equipments, not only detection speed is extremely slow, electron gun product is finished above-mentioned distortion error and bending error and is detected and judge and needed just can finish in 2 minutes, and because the high-accuracy requirement of electron gun device, after finishing a kind of technical indicator detection on a kind of detection calibration equipment, change the outfit and detect on the another kind of checkout equipment in the process of proofreading and correct another kind of technical indicator, tend to preceding a kind of technical indicator is caused new error, therefore, be difficult to guarantee that two kinds of technical indicators are accurately detected simultaneously and proofread and correct.In addition, also need manual compiling examination and test of products report for the examination and test of products, the manual observation detection mode makes testing staff's continuous operation under high-brightness environment, labour intensity is big, eye fatigue and eyesight are descended, and product detects and influenced greatly by human factor, can't guarantee the consistency of the examination and test of products.
Summary of the invention
At defective or the deficiency that above-mentioned existing equipment and detection method exist, the objective of the invention is to develop a kind of cost low, detect and judge that intelligent, torsion resistance detects integrated, the high-speed colored picture tube electron gun that develops simultaneously with high accuracy with flexibility and twists and flexural property error Intelligent Measurement decision instrument.
To achieve these goals, the technical scheme that the present invention takes is, a kind of colored picture tube electron gun torsion characteristic and flexural property Intelligent Measurement decision instrument, it is characterized in that, it comprises that mechanical positioning unit, sample clamp unit, two-way optical image signal acquiring unit, image acquisition units, image co-registration processing unit, there are image co-registration process software and electron gun to twist and warp bent error measure software in this image co-registration processing unit, based on the human-computer interaction interface and the storage display unit thereof of virtual instrument;
Described two-way optical image signal acquiring unit includes:
The active positioned light source that provides detected electron gun torsion resistance to measure is provided one horizontal light source; The parallel rays that this horizontal light source sends passes the through hole of electron gun both sides, focus on back imaging on imaging plane through second camera lens that is provided with, can obtain the torsion resistance image information of electron gun and be converted to vision signal being sent to second collecting unit and carrying out digital-to-analogue conversion;
One perpendicular light source, the active constant light that is used to provide the electron gun flexibility to measure is shone; The illumination that this perpendicular light source is sent is mapped on the top center circle of electron gun, through imaging on imaging plane after the lens focus of first video camera that is provided with, can obtain the flexibility image information of electron gun and be converted to vision signal being sent to first collecting unit and carrying out digital-to-analogue conversion;
First collecting unit and second collecting unit are communicated with the image co-registration processing unit respectively, and this image co-registration processing unit is provided with the image co-registration process software and electron gun is twisted and warped bent error measure software, and be connected based on virtual instrument man-machine interaction software;
First collecting unit and second collecting unit are sent to the image co-registration processing unit after vision signal is converted to digital signal, twisting and warping bent error measure software by image co-registration process software in the graphics processing unit and electron gun finishes image processing, distortion and bending error calculating and generates test testing result form and complete machine operation control algolithm, be sent on the human-computer interaction interface based on virtual instrument, show electron gun distortion and crooked original image and testing result in real time.
Described virtual instrument interface has also that system parameters presets, interactive function is selected in parameter management, function selecting, operation indicating, storage and printing etc.
Colored picture tube electron gun twist and warping degree intelligent detecting instrument of the present invention, be mainly used in the online automatic detection of colored picture tube electron gun product distortion sum of errors bending error, and be used for the check and the demarcation of off-line finished product, have the detection decision-making function to polymorphic type electron gun distortion error and bending error, detection speed is more than 10 times of legacy equipment; The main performance index such as consistency of its accuracy of detection, speed, a tractor serves several purposes and detection all reach the top standard of the sector.In addition, this instrument process software is revised the automatic detection that promptly can be used for display electron gun twist and warping song a little.
Description of drawings
Fig. 1 is an overall block-diagram of the present invention;
Fig. 2 is a hardware structure diagram of the present invention;
Fig. 3 is that electron gun twist and warping degree of the present invention detects the Processing Algorithm flow chart;
Fig. 4 is a software operation flow chart of the present invention;
Fig. 5 is an IMAQ hardware effort flow chart of the present invention.
Fig. 6 is the multimedia chip Fusion 878A internal structure block diagram that the exploitation image pick-up card adopts.
For a more clear understanding of the present invention, below in conjunction with specific embodiment that accompanying drawing and inventor provide, the present invention is described in further detail and explanation.
Embodiment
Colored picture tube electron gun distortion of the present invention can be divided into bending error Intelligent Measurement decision instrument: mechanical positioning unit, sample clamp unit, two-way optical image signal acquiring unit, image acquisition units, image co-registration processing unit, there are image processing software and electron gun to twist and warp bent error measure software in this image co-registration processing unit, based on the human-computer interaction interface and the storage display unit thereof of virtual instrument.
In two-way image signal acquisition unit, the one tunnel is used to supply with the measuring constant light photograph of sample flexibility, overcomes the interference of lamp, the positioned light source that another road provides torsion resistance to measure;
The mechanical positioning unit is used to realize the coordinate setting on three dimensions of light source, sample and image acquisition units, guarantees three-dimensional accurate positioning reference;
Sample clamps initial orientation and the benchmark that sample is guaranteed in the unit;
Image acquisition units is used for the digital-to-analogue conversion of vision signal;
The image co-registration processing unit is converted to vision signal according to certain rules with image information, offer inner image co-registration process software through the digitlization conversion, finish extraction by the image co-registration process software to the sample image characteristic information, distortion judges that with crooked calculating, the fusion of two-way characteristics of image the testing journal sheet generates and the complete machine operation is controlled.Finish the friendly interactive operation of preset parameter, operation indicating, function selecting, parameter management, testing result demonstration and storage based on the human-computer interaction interface of virtual instrument.
It below is the specific embodiment that the inventor finishes.
As shown in Figure 1, Fig. 1 is system's photovoltaic principals block diagram of this embodiment.Horizontal light source 9 provides active positioned light source for the measurement of electron gun torsion resistance, and perpendicular light source 6 provides active constant light to shine for the measurement of electron gun flexibility;
The parallel rays that horizontal light source 9 sends passes the through hole of electron gun 8 (sample) both sides, through imaging on the imaging plane of first video camera 7 after the lens focus, thereby obtains electron gun 8 torsion resistance image informations and is sent to collecting unit 4 and carries out digital-to-analogue conversion; By the top center circle of perpendicular light source 6 irradiation electron guns 8,, thereby obtain electron gun flexibility image information and be sent to collecting unit 3 and carry out digital-to-analogue conversion through imaging on the imaging plane of first video camera 5 after the lens focus.
Under the control of the image capture software of image co-registration processing unit 2, image acquisition units 3 and image acquisition units 4 are sent to image co-registration processing unit 2 after image video signal being converted to digital signal respectively, image processing software in the image co-registration processing unit 2 and electron gun twist and warp that bent error measure software is finished image co-registration processing, distortion error and bending error calculates, the testing journal sheet generates and complete machine operation control, and show that electron gun twists and warps bent original image and testing result (comprising data and figure) on based on the human-computer interaction interface of virtual instrument 1 in real time.Feature operations such as virtual instrument interface 1 finishes also that system parameters presets, parameter management, function selecting, operation indicating, storage and printing.
Fig. 2 is that the inventor is according to technical scheme designed system mechanical structure block diagram of the present invention.Mechanical structure is used for fixing video camera, light source and the sample (promptly the figure electron gun 8) etc. in the measuring system, and its quality directly influences certainty of measurement, stability and operability.As shown in Figure 2, base 11 is base plates of a rigidity, can reduce to greatest extent owing to measure error is introduced in the deformation of base; Geometrical clamp 12 and geometrical clamp 14 are realized respectively the angle of pitch and the azimuth of second video camera 7 and horizontal light source 9 are finely tuned; Geometrical clamp 15 realize to first adjustment of video camera 5 on the six-freedom degree of top to bottom, left and right, front and rear; Electron gun socket 13 is used for clamping and fixes detected sample (promptly the figure electron gun 8), and the contraposition of guaranteeing sample is with stable; Geometrical clamp 19 clamps and fixes the perpendicular light source (not shown) of first video camera, 5 front ends, for the measurement of electron gun flexibility provides permanent steady illumination.21 is the controller box of this instrument, and 22 is this instrument detecting output unit framework as a result.
Fig. 3 is that the twist and warping degree of the colored picture tube electron gun twist and warping degree intelligent detecting instrument that provides of inventor detects the Processing Algorithm software flow pattern.Mainly comprise softwares such as IMAQ, image preliminary treatment, image segmentation, rim detection, image thinning, feature extraction and calculation of characteristic parameters.Wherein adopted medium filtering, image segmentation, Marr-Hildreth rim detection, Medial-Axis Transformation extraction skeleton and Hough conversion to ask for multiple image processing algorithms such as circle and linear equation based on pixel gray scale similitude.
Fig. 4 is the software operation flow chart of the colored picture tube electron gun twist and warping degree intelligent detecting instrument that provides of inventor.
This instrument system software is made up of system's primary module, image capture module, visual fusion treatment module, error calculating module, data memory module and data print module.System's primary module is responsible for coordinating, controlling the operation of whole software.As shown in Figure 4, after this systems soft ware brings into operation, at first need to use the electron gun standard gauge that instrument system is calibrated, deposit the normal data after the calibration in associated documents (perhaps former calibration data being read) from file, and carry out the parameter setting according to these data; IMAQ and visual fusion treatment partly are responsible for the collection and the data processing of twist and warping diagram picture, are divided into steps such as image acquisition units initialization, IMAQ, image processing and Feature Parameter Fusion calculating; Error calculating module is judged the twist and warping degree error parameter value that calculates, provide qualified, the defective and amendable result of determination of this product, if product belongs to the correction class, then need through artificial online visual adjustment, till product twist and warping degree value reaches qualified requirement; Storage partly adopts the ADO database technology that data such as the twist and warping degree parameter value of detection colored picture tube electron gun, the total qualification rate of product, testing product total quantity are stored and managed; The data print module provides the product measurement report to print.
The IMAQ hardware effort flow chart that Fig. 5 is among the present invention to be adopted.
The present invention adopts large scale integrated circuit to realize video coding, ratio adjusting, Data Format Transform, data access and DMA transmission control etc.
Composite video signal inputs to the image data format modular converter after video decode and ratio adjustment module, transfer to bus DMA transmission control unit (TCU) module through the view data fifo module then, is exported by the FCI bus interface at last.
Fig. 6 is the internal structure block diagram of the large scale integrated circuit Fusion 878A of exploitation image acquisition units employing.
Analog video signal is connected to A/D converter by multichannel (multiplexing) device of one four input, and this multichannel (multiplexing) device can be selected between four tunnel composite video signal sources.The decay low pass filter carries out digital signal to be sent to video coding and ratio regulon after the over-sampling filtering.ULTRALOCK is when solving analog signal conversion and becoming digital signal, the uncertain and shearing algorithm unit taked of each row of data amount.Video coding and ratio regulon receiving digital signals are also regulated its ratio of carrying out colourity, saturation and output resolution ratio.Vision signal is after process decoding and ratio adjusting processing, and the ratio of converting to is the video stream file of 4: 2: 2 data packet formats.GPIO (general purpose I/O interface) interface can support digital video port single-candidate to control outward.The pixel format conversion unit carries out color and Data Format Transform to vision signal, vision signal is converted to the rgb signal of 32 bit widths, and then, realize the asynchronous exchange of buffering image pixel data and bus transfer unit delivering to first in first out buffer FIFO with 630 byte degree of depth through the data converted data.Vision signal through decoding after, be benchmark with the work clock of decoding unit, the pixel data data is write FIFO continuously; The direct transmission control unit (TCU) DMA of data is benchmark with the pci bus clock, reading of data data from FIFO continuously, DMA is designed to a RISC (reduced instruction set computer) engine, operates in RISC instruction set in the device driver by this engine, carries out the exchanges data transmission.
The present invention has finished the development of model machine, and it is on probation to put into production.Through facts have proved, its cost is low, function is strong, precision is high, and speed is exceedingly fast, and is easy to operate, has highly intellectuality, automation and visual measuring ability, and working stability is reliable, has reached the design object of expection.Twist and warp the requirement of bent characteristic for colored picture tube electron gun product that adapt to measure multiple model, duplicated two again, and the human-computer interaction interface of further perfect apparatus structure, processing technology and software designs on former design basis by manufacturer's requirements.
Colored picture tube electron gun of the present invention is twisted and warped bent error Intelligent Measurement decision instrument, the online detection that is mainly used in colored picture tube electron gun distortion error and bending error is judged, and be used for the check and the demarcation of off-line finished product, through applicant's trying out in the sector, can accurately finish the detection of polymorphic type electron gun distortion error and bending error is judged that detection speed is higher nearly 10 times than traditional approach.The key technical indexes such as its accuracy of detection, speed, a tractor serves several purposes and consistency of product all reach the top standard of the sector.
Claims (2)
1. colored picture tube electron gun distortion and flexural property error Intelligent Measurement decision instrument, it comprise mechanical positioning unit, sample clamp unit, two-way optical image signal acquiring unit, image acquisition units, image co-registration processing unit, based on the human-computer interaction interface and the storage display unit thereof of virtual instrument;
Wherein, there are image processing software and electron gun to twist and warp bent error measure software in the described image co-registration processing unit;
It is characterized in that described two-way optical image signal acquiring unit includes:
The active positioned light source that provides detected electron gun (8) torsion resistance to measure is provided one horizontal light source (9); The parallel rays that this horizontal light source (9) sends passes the through hole of electron gun (8) both sides, through imaging on imaging plane after second video camera (7) lens focus that is provided with, can obtain the torsion resistance image information of electron gun (8) and be converted to vision signal being sent to second collecting unit (4) and carrying out digital-to-analogue conversion;
One perpendicular light source (6), the active constant light that is used to provide the electron gun flexibility to measure is shone; The illumination that this perpendicular light source (6) is sent is mapped on the top center circle of electron gun (8), through imaging on imaging plane after the lens focus of first video camera (5) that is provided with, can obtain the flexibility image information of electron gun (8) and be converted to vision signal being sent to first collecting unit (3) and carrying out digital-to-analogue conversion;
First collecting unit (3) and second collecting unit (4) are communicated with image co-registration processing unit (2) respectively, and this image co-registration processing unit (2) is provided with image processing software and electron gun is twisted and warped bent error measure software, and are connected with virtual instrument software (1);
First collecting unit (3) and second collecting unit (4) are sent to image co-registration processing unit (2) after vision signal is converted to digital signal, twisting and warping bent error measure software by image processing software in the image co-registration processing unit (2) and electron gun finishes image processing, distortion and bending error calculating and generates test testing result form and complete machine operation control algolithm, be sent on the human-computer interaction interface based on virtual instrument (1), show electron gun distortion and crooked original image and testing result in real time.
2. colored picture tube electron gun torsion characteristic as claimed in claim 1 and flexural property Intelligent Measurement decision instrument, it is characterized in that described virtual instrument software (1) has that system parameters presets, parameter management, function selecting, operation indicating, storage and printing function.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100419393A CN1328748C (en) | 2005-04-11 | 2005-04-11 | Intelligent detecting discriminator for distortion and flexion characteristic error of color electron gun |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100419393A CN1328748C (en) | 2005-04-11 | 2005-04-11 | Intelligent detecting discriminator for distortion and flexion characteristic error of color electron gun |
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| Publication Number | Publication Date |
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| CN1670890A CN1670890A (en) | 2005-09-21 |
| CN1328748C true CN1328748C (en) | 2007-07-25 |
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| CNB2005100419393A Expired - Fee Related CN1328748C (en) | 2005-04-11 | 2005-04-11 | Intelligent detecting discriminator for distortion and flexion characteristic error of color electron gun |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61256546A (en) * | 1985-05-09 | 1986-11-14 | Toshiba Corp | Electron gun inspection device |
| JPS6313234A (en) * | 1986-07-04 | 1988-01-20 | Hitachi Ltd | Measurement device for electron gun |
| JPH11111174A (en) * | 1997-10-03 | 1999-04-23 | Sony Corp | Method and device for detecting positional deviation of electron gun |
-
2005
- 2005-04-11 CN CNB2005100419393A patent/CN1328748C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61256546A (en) * | 1985-05-09 | 1986-11-14 | Toshiba Corp | Electron gun inspection device |
| JPS6313234A (en) * | 1986-07-04 | 1988-01-20 | Hitachi Ltd | Measurement device for electron gun |
| JPH11111174A (en) * | 1997-10-03 | 1999-04-23 | Sony Corp | Method and device for detecting positional deviation of electron gun |
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| Publication number | Publication date |
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| CN1670890A (en) | 2005-09-21 |
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