CN104111260A - Nondestructive ceramic detection device and detection method thereof - Google Patents
Nondestructive ceramic detection device and detection method thereof Download PDFInfo
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- CN104111260A CN104111260A CN201410326624.2A CN201410326624A CN104111260A CN 104111260 A CN104111260 A CN 104111260A CN 201410326624 A CN201410326624 A CN 201410326624A CN 104111260 A CN104111260 A CN 104111260A
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Abstract
The invention discloses a nondestructive ceramic detection device and a detection method thereof. The detection device comprises a rack and an engine cover, wherein the engine cover stretches across the middle of the rack in a portal frame mode; a driving wheel and a driven wheel are respectively mounted at two ends of the rack; a motor is arranged on a framework on one side of the rack; the driving wheel is connected with the motor through a synchronous belt; a fan is mounted on one transverse side of the engine cover; a control cabinet is mounted on one vertical side of the engine cover; the lower half part of the control cabinet is of cabinet type; a detection host is arranged in the cabinet; a linear CCD (Charge Coupled Device) camera is arranged on a first cross beam in the engine cover; a linear light source is arranged under the linear CCD camera; a plurality of laser displacement sensors are arranged on a second cross beam of the engine cover. The detection device is simple in structure, convenient to maintain and capable of effectively avoiding artificial detection error; meanwhile, according to the detection method, the detection process is simple and quick, the detection result is accurate and the detection efficiency is high.
Description
Technical field
The present invention relates to Production of Ceramics checkout equipment and manufacture field, particularly a kind of Ceramic Tiles non-destructive detecting device and detection method that can fast, accurately detect tested Ceramic Tiles technical parameter.
Background technology
In existing Ceramic Tiles, prepare on production line, in the characterization processes of Ceramic Tiles, great majority are that detected Ceramic Tiles is delivered in detection case, by pick-up unit, ceramic brick surface are detected, and by data acquisition, comparison, finally draw testing result.In this process, need professional to monitor it, therefore exist more Subjective Factors, the detection efficiency of this equipment and stability all can not adapt to large-scale ceramic tile production now and produce line.
Chinese invention patent (Granted publication number is CN101169452B) discloses a kind of ceramic tile quality detection method and equipment, and it comprises conveying device, data collector, data transmission device, data processing equipment, the pause device being arranged in frame.Wherein, pause device is comprised of front floater guide block detent mechanism, rear floater guide block detent mechanism, centering body, dome brick mechanism, upper limit mechanism, optoelectronic switch support; The detector of data collector is arranged in detector frame, and the both sides of detector arrange respectively power supply cylinder.Its testing process is: tested Ceramic Tiles is transported on the detection position of checkout equipment, pause device positions it according to the position of setting, then tested Ceramic Tiles is carried out to data acquisition, after collection, pause device, conveying device are transported to later process, and data transmission device is transported to data processing equipment by the data that collect and processes and show.This equipment weak point: 1, device structure is complicated, easily breaks down, and it is also more difficult to safeguard; 2, testing process is complicated, and efficiency is lower; 3, detection method is advanced not, thereby makes the result of detection not accurate enough; 4, testing process production line has pause, easily produces mechanical damage; 5, a station only completes part surface quality detection project, insufficiency.
Chinese invention patent (Granted publication number is CN101975557B) discloses a kind of detection equipment of ceramic plate and detection method; It comprises conveying mechanism and support, wherein conveying mechanism is positioned at frame, four limits that are positioned at conveying mechanism top support be respectively equipped with linear laser transmitter and angle adjustable, the linear laser line that linear laser transmitter slants from top to bottom forms rectangle linear laser frame on the conveyor surface of conveying mechanism; Cantilever tip installing plate is provided with four ultrahigh resolution industrial cameras and over against four jiaos of tested ceramic wafers, ultrahigh resolution industrial camera signal output part is connected with Computer signal input end.Its testing process is: the optical detection probe that is positioned at streamline one side, detect after measured object, by controller instruction conveying mechanism, stop carrying, be positioned at the linear laser line that four linear laser transmitters that ceramic wafer writes launch and irradiate ceramic plate edge, four ultrahigh resolution industrial cameras are taken pictures and are input in computing machine and compare with the standard picture of built-in computer, calculate ceramic plate angularity, draw and whether have Que Gu corner, edge phenomenon, and respectively qualified and underproof product is marked by the marking pen on two groups of cylinders.This equipment weak point: 1, device structure is complicated, easily breaks down, and safeguards also more difficult; 2, the product needed having detected is manually classified; 3, equipment need to pause and detect, and detection efficiency is lower; 4, sensing range is relatively limited to, and only can detect the edge of ceramic wafer; 5, adopt the mode of Dual-conveying tall band, easily cause asynchronous, thereby cause relative displacement, cause detection error; 6, can not complete straightness of sides detection, look number detection.
Summary of the invention
Fundamental purpose of the present invention is that the shortcoming that overcomes prior art, with not enough, provides a kind of Ceramic Tiles non-destructive detecting device.
Another object of the present invention is to, a kind of detection method based on Ceramic Tiles non-destructive detecting device is provided.
In order to reach above-mentioned the first object, the present invention by the following technical solutions:
A kind of Ceramic Tiles non-destructive detecting device, comprise frame and hood, hood is in the mode of portal frame across in the middle of frame, and the two ends of frame are separately installed with driving wheel and engaged wheel, the framework of frame one side is provided with motor, between described driving wheel and motor, by Timing Belt, is connected; A horizontal side of hood is provided with fan, longitudinal side of hood is equipped with control box, control box the latter half is cabinet type, in cabinet, be provided with detection main frame, first crossbeam in hood is provided with linear CCD camera, the below of linear CCD camera is provided with linear light sorurce, and the second cross beam of hood is above-mentioned is provided with a plurality of laser displacement sensors.
Preferably, also comprise conveying belt, described conveying belt is positioned at frame top through driving wheel, engaged wheel.
Preferably, in the both sides of conveying belt, be provided with positioning baffle, positioning baffle is positioned at central rack.
Preferably, described frame is rectangular parallelepiped framework, and rectangular parallelepiped base of frame is provided with installation foot; Described guidance panel is provided with scram button, hand-automatic rotation switch, reset button and alarm lamp.
Preferably, also comprise scrambler, described scrambler is arranged on a side of frame, by engaged wheel, contacts with conveying belt, is provided with the protective baffle plate of protecting scrambler roller not clashed into by ceramic tile before scrambler.
In order to reach above-mentioned the second object, the present invention by the following technical solutions:
A detection method for Ceramic Tiles non-destructive detecting device, comprises the steps:
Detect main frame inside image processing computing unit, image pick-up card and modulus capture card are housed, image pick-up card is connected with linear CCD camera, and modulus capture card is connected with laser displacement sensor;
When the detected Ceramic Tiles of needs is placed on conveying belt, along with transport tape motion, on it, scrambler is pressed distance to a declared goal interval transmitted signal to image pick-up card, image pick-up card drives the work of linear CCD camera, when ceramic tile process laser displacement sensor, laser displacement sensor captures Ceramic Tiles elevation information, start to record displacement information, and open capture card and receive collected by camera image, in the time of after collected by camera breadth meets and exceeds ceramic tile size, stop receiving collection image, stop recorded bit displacement sensor information;
Scrambler roller is positioned at a side of frame, tightly fastens intermediate belt with below base plate, guarantees between transport tape and roller without relative displacement; Scrambler according to belt movement apart from transmitted signal to image pick-up card, image pick-up card will gather the picture frame of Ceramic Tiles according to pulse signal drive wire array camera according to certain frequency;
Detect main frame the picture frame collecting is carried out to classified calculating, Ceramic Tiles Size dependence be can obtain and data and ceramic tile color relevant information detected, described ceramic Size dependence detection data four edge lengths, catercorner length, straightness of sides, angle are directly spent, and take colouring information as according to by statistics classification means, realize little aberration ceramic tile automatic classification;
The signal that laser displacement sensor collects Ceramic Tiles is analog signals, detects main frame the data that read from modulus capture card are passed through to convert, and is output as the flatness of detected Ceramic Tiles;
Detect main frame by the exclusive bar code sequence number of the numerical generation calculating, this bar code number can flow to coder, and this bar code number is sprayed at detected ceramic brick surface coder so that follow-up code reader, sorter carry out reading code, sorting.
Preferably, adopt machine vision method to gather ceramic tile complete image, when ceramic tile is excessive, by a plurality of linear CCD collected by camera ceramic tiles subregion image, then by the various piece Image Mosaics collecting.
Preferably, the calculation procedure of flatness is specially:
N laser displacement sensor detects N column data, gets equably NxN sampled point;
The position of laser displacement sensor is fixed, the size dimension of ceramic tile is also fixed, therefore in sample point coordinate (X, Y, Z), X, Y value is by the determining positions in sequence according to displacement transducer position and sampled point, and Z is that the value that laser displacement sensor records is height, by coordinate conversion, is to using in the rectangular coordinate system of ceramic tile central point as true origin, export the flexibility of this Ceramic Tiles, this flexibility is flatness value d;
During d=f (x, y, z) d>0, Ceramic Tiles projection;
During d<0, Ceramic Tiles is recessed;
On every straight line, two, edge end points forms straight line, calculates other points of closing on this straight line to the distance of this straight line.
Preferably, before Ceramic Tiles detects, also comprise the steps: when carrying out
After checkout equipment open detection, first by Ceramic Tiles small-lot testing on production line, obtain look basis of classification data, can select algorithms of different automatic classification, when classifying quality and artificial judgment basically identical after, take selection algorithm as benchmark, realize the look number of ceramic tile by the gross detected to classification feature.
By the sensor-triggered CCD collected by camera ceramic tile surface image that puts in place, during a plurality of collected by camera, mutual gathers overlapping region, guarantee to gather image complete, with prior calibration algorithm, obtain each camera lap position, during detection, directly by model, multiple image is spliced into complete ceramic tile image, with approaching summit fitted straight lines of edges, fitting a straight line intersection point is defined as to ceramic tile apex coordinate, calculates each apex coordinate apart from obtaining the detected values such as the length of side, diagonal line length, squareness.Calculate again ceramic tile marginal point and connect to the limit air line distance acquisition straightness of sides measured value.
Compared with prior art, tool has the following advantages and beneficial effect in the present invention:
1, the present invention is simple in structure, easy to maintenance, effectively prevents that manual detection from makeing mistakes.
2, testing process simple and fast of the present invention, testing result is accurate, and detection efficiency is high.
3, the present invention has high integration, not only can detect the size (comprise straightness of sides, angle are directly spent, flatness) of Ceramic Tiles, can also detect the color of Ceramic Tiles, and qualified Ceramic Tiles is classified according to aberration.
4, the present invention is compatible strong, can be compatible to existing automatic production line quickly, save manually, and boost productivity.
Accompanying drawing explanation
Fig. 1 is the structural representation of Ceramic Tiles non-destructive detecting device of the present invention;
Fig. 2 is the front view of Ceramic Tiles non-destructive detecting device of the present invention;
Fig. 3 is the side view of Ceramic Tiles non-destructive detecting device of the present invention.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment
The present embodiment provides Ceramic Tiles non-destructive detecting device, this Ceramic Tiles non-destructive detecting device is mainly comprised of control system, detection system, kinematic system, wherein control system is comprised of main frame, operation interface, control box, detection system comprises that linear CCD camera, laser displacement sensor, linear light sorurce form, and kinematic system is comprised of motor, conveying belt, Timing Belt, scrambler.
As shown in Figure 1, Figure 2, Figure 3 shows, the Ceramic Tiles non-destructive detecting device of the present embodiment, comprises frame 1, conveying belt 2, hood 3, operation interface 4, driving wheel 5, Timing Belt 6, motor 7, detects main frame 8, control box 9, positioning baffle 10, scrambler 11, engaged wheel 12, fan 13, linear CCD camera 14, laser displacement sensor 15 and linear light sorurce 16.
Described frame 1 is rectangular parallelepiped framework, and rectangular parallelepiped base of frame is provided with installation foot, is convenient to equipment to be fixedly installed in ground.
Described driving wheel 5, engaged wheel 12 are arranged on respectively the two ends of frame 1, between described driving wheel 5 and motor 7, by Timing Belt 6, are connected; Described motor 7 is fixedly mounted on frame 1 one body side frames.
Described conveying belt 2 is positioned at frame top through driving wheel 5, engaged wheel 12.
Described hood 3 is in the mode of portal frame across in the middle of frame 1, and a horizontal side of hood 3 is provided with fan 13, and an other side can freely be opened, so that daily servicing is used.Longitudinal side of hood 3 is equipped with control box 9, control box 9 the latter halfs are cabinet type, fan 13 is equipped with in side, it in cabinet, is detection main frame 8, control box 9 the first half are certain angle of inclination, operation interface 4 is installed, near operation interface, can be provided with as requested scram button, hand-automatic rotation switch, reset button and alarm lamp.
Described positioning baffle 10 is arranged on the both sides of conveying belt, and is positioned at central rack.
Described scrambler 11 is positioned at a side of frame 1, by roller, contacts with conveying belt 2.
Described linear CCD camera 14 is positioned on first crossbeam of hood 3, and described linear light source 16 is positioned at the below of linear CCD camera 14, and position is adjustable.
Described laser displacement sensor 15 is positioned on second crossbeam of hood 3, and for gathering ceramic brick surface height, it gathers numerical value is analog quantity.
The present embodiment Ceramic Tiles non-destructive detecting device can be embedded on existing Ceramic Tiles automatic production line, and its mode of motion and step are as follows:
After checkout equipment open detection, displacement transducer continues to detect, first the Ceramic Tiles sample brick that is about on production line come out of the stove is carried out to sample training, first sample brick is detected, its color is deposited and detected main frame inside as the reference color of Ceramic Tiles color detection;
Detect main frame inside image pick-up card and modulus capture card are housed, image pick-up card is connected with linear CCD camera, and modulus capture card is connected with laser displacement sensor;
Scrambler roller is positioned at a side of frame, tightly fastens intermediate belt with below base plate, guarantees between transport tape and roller without relative displacement; Scrambler according to belt movement apart from transmitted signal to image pick-up card, image pick-up card will gather the picture frame of Ceramic Tiles according to pulse signal drive wire array camera according to certain frequency;
When the detected Ceramic Tiles of needs by artificial or Manipulator Transportation to conveying belt, along with transport tape motion, on it, scrambler is pressed distance to a declared goal interval transmitted signal to image pick-up card, the work of image pick-up card drive wire array CCD camera, when ceramic tile process displacement transducer, sensor captures Ceramic Tiles elevation information, start to record displacement information, and open capture card and receive collected by camera image, when collected by camera breadth is enough, stops receiving collection image, stop recorded bit displacement sensor information;
Detect main frame detects data and is detected the detected parameters of Ceramic Tiles by the program output that converts collecting image and a plurality of sensor in gatherer process, as size, straightness of sides, angle is directly spent, flatness, aberration etc., detecting main frame contrasts the aberration calculating and closes on color classification according to aberration scope and reference color, detect comprehensive each detected parameters of main frame, calculating parameter generates exclusive bar code sequence number, this bar code number can flow to coder, coder sprays at detected ceramic brick surface this bar code number so that follow-up code reader, sorters etc. carry out reading code, sorting.
It is example that the computing method of above-mentioned flatness be take 5 laser displacement sensors:
5 laser displacement sensors detect 5 column datas, get equably 25 data points (5 * 5, be uniformly distributed);
The position of laser displacement sensor is fixed, the size dimension of ceramic tile is also fixed, therefore in sample point coordinate (X, Y, Z), X, Y value is by the determining positions in sequence according to displacement transducer position and sampled point, and Z is that the value that laser displacement sensor records is height, by coordinate conversion, is to using in the rectangular coordinate system of ceramic tile central point as true origin, export the flexibility of this Ceramic Tiles, this flexibility is flatness value d;
During d=f (x, y, z) d>0, Ceramic Tiles projection;
During d<0, Ceramic Tiles is recessed;
On every straight line, two, edge end points forms straight line, calculates other points of closing on this straight line to the distance of this straight line.
Above-described embodiment is preferably embodiment of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection scope of the present invention.
Claims (10)
1. a Ceramic Tiles non-destructive detecting device, it is characterized in that, comprise frame and hood, hood in the mode of portal frame across in the middle of frame, the two ends of frame are separately installed with driving wheel and engaged wheel, the framework of frame one side is provided with motor, between described driving wheel and motor, by Timing Belt, is connected; A horizontal side of hood is provided with fan, longitudinal side of hood is equipped with control box, control box the latter half is cabinet type, in cabinet, be provided with detection main frame, first crossbeam in hood is provided with linear CCD camera, the below of linear CCD camera is provided with linear light sorurce, and the second cross beam of hood is above-mentioned is provided with a plurality of laser displacement sensors.
2. Ceramic Tiles non-destructive detecting device according to claim 1, is characterized in that, also comprises conveying belt, and described conveying belt is positioned at frame top through driving wheel, engaged wheel.
3. Ceramic Tiles non-destructive detecting device according to claim 1, is characterized in that, in the both sides of conveying belt, is provided with positioning baffle, and positioning baffle is positioned at central rack.
4. Ceramic Tiles non-destructive detecting device according to claim 1, is characterized in that, described frame is rectangular parallelepiped framework, and rectangular parallelepiped base of frame is provided with installation foot;
Described guidance panel is provided with scram button, hand-automatic rotation switch, reset button and alarm lamp.
5. Ceramic Tiles non-destructive detecting device according to claim 1; it is characterized in that, also comprise scrambler, described scrambler is arranged on a side of frame; by engaged wheel, contact with conveying belt, before scrambler, be provided with the protective baffle plate of protecting scrambler roller not clashed into by ceramic tile.
6. the detection method of Ceramic Tiles non-destructive detecting device according to claim 1, is characterized in that, comprises the steps:
Detect main frame inside image processing computing unit, image pick-up card and modulus capture card are housed, image pick-up card is connected with linear CCD camera, and modulus capture card is connected with laser displacement sensor;
When the detected Ceramic Tiles of needs is placed on conveying belt, along with transport tape motion, on it, scrambler is pressed distance to a declared goal interval transmitted signal to image pick-up card, image pick-up card drives the work of linear CCD camera, when ceramic tile process laser displacement sensor, laser displacement sensor captures Ceramic Tiles elevation information, start to record displacement information, and open capture card and receive collected by camera image, when collected by camera breadth meets and exceeds after ceramic tile size, stop receiving collection image, stop recorded bit displacement sensor information;
Scrambler roller is positioned at a side of frame, tightly fastens intermediate belt with below base plate, guarantees between transport tape and roller without relative displacement; Scrambler according to belt movement apart from transmitted signal to image pick-up card, image pick-up card will gather the picture frame of Ceramic Tiles according to pulse signal drive wire array camera according to certain frequency;
Detect main frame the picture frame collecting is carried out to classified calculating, Ceramic Tiles Size dependence be can obtain and data and ceramic tile color relevant information detected, described ceramic Size dependence detects data and comprises that four edge lengths, catercorner length, straightness of sides, angle directly spend, and take colouring information as according to by statistics classification means, realize little aberration ceramic tile automatic classification;
The signal that laser displacement sensor collects Ceramic Tiles is analog signals, detects main frame the data that read from modulus capture card are passed through to convert, and is output as the flatness of detected Ceramic Tiles;
Detect main frame by the exclusive bar code sequence number of the numerical generation calculating, this bar code number can flow to coder, and this bar code number is sprayed at detected ceramic brick surface coder so that follow-up code reader, sorter carry out reading code, sorting.
7. the detection method of Ceramic Tiles non-destructive detecting device according to claim 6, it is characterized in that, adopt machine vision method to gather ceramic tile complete image, when ceramic tile is excessive, by a plurality of linear CCD collected by camera ceramic tiles subregion image, then by the various piece Image Mosaics collecting.
8. the detection method of Ceramic Tiles non-destructive detecting device according to claim 6, is characterized in that, the calculation procedure of flatness is specially:
N laser displacement sensor detects N column data, gets equably N * N sampled point;
The position of laser displacement sensor is fixed, and the size dimension of ceramic tile is also fixed, so sample point coordinate (X, Y, Z), in, X value is by according to displacement transducer determining positions, Y value is by sampled point determining positions in sequence, Z is that the value that laser displacement sensor records is height, and matching N * N sample point coordinate, to plane, is calculated the positive negative direction of this plane sampled point distance farthest, be the flexibility of Ceramic Tiles, this flexibility is flatness value d;
During d=f (x, y, z) d>0, Ceramic Tiles projection;
During d<0, Ceramic Tiles is recessed.
9. the detection method of Ceramic Tiles non-destructive detecting device according to claim 6, is characterized in that, when carrying out before Ceramic Tiles detects, also comprising the steps:
After checkout equipment open detection, first by Ceramic Tiles small-lot testing on production line, obtain look basis of classification data, can select algorithms of different automatic classification, when classifying quality and artificial judgment basically identical after, take selection algorithm as benchmark, realize the look number of ceramic tile by the gross detected to classification feature.
10. the detection method of Ceramic Tiles non-destructive detecting device according to claim 6, is characterized in that, when carrying out before Ceramic Tiles detects, also comprising the steps:
After checkout equipment open detection, by the sensor-triggered CCD collected by camera ceramic tile surface image that puts in place; During a plurality of collected by camera, mutual gathers overlapping region, guarantees to gather image complete; With prior calibration algorithm, obtain each camera lap position, during detection, directly by model, multiple image is spliced into complete ceramic tile image; With approaching summit fitted straight lines of edges, fitting a straight line intersection point is defined as to ceramic tile apex coordinate, calculate each apex coordinate apart from obtaining the detected values such as the length of side, diagonal line length, squareness; Calculate again ceramic tile marginal point and connect to the limit air line distance acquisition straightness of sides measured value.
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