CN101819029B - Reticle processing flatness detection system and method of micro-vision array solar energy film cell - Google Patents

Abstract

The invention discloses a micro-vision array solar thin-film battery scoring line processing flatness detection system and method in the technical field of solar thin-film battery production. The sensor array, the micro-vision sensor array includes n micro-vision sensors arranged at intervals in the x direction and m identical micro-vision sensors arranged at intervals in the y direction; the microcomputer detection system drives the y-direction driving motor, and the y-direction drives the screw Make the positioning platform of the solar thin film battery move in the y direction at a uniform speed. During the translation process, the DSP preprocessing module starts the corresponding micro-vision sensor to continuously collect the engraved line pictures of the solar thin film battery, and the detection system stitches and calculates the straight line of a single line segment. degree, the line width change rate of a single line segment and the parallelism of three line segments to ensure the rapidity and accuracy of detection.

Description

Micro-vision array solar thin film battery scoring line processing flatness detection system and method

technical field

The invention relates to the technical field of solar thin film battery production, in particular to a flatness detection system used for solar thin film battery scoring processing.

Background technique

In the production process of solar thin film cells, since the cutting of solar thin film cells is realized by laser processing, it is unavoidable that the solar thin film cells are not straight, the line width of a single line segment varies greatly, and there is no gap between lines. too parallel. At present, two methods are generally used to detect the straightness of the reticle processing. One is manual visual inspection under a microscope. The defect is that the accuracy cannot be guaranteed, and it can only be spot checks. quality; the second is to use a single-row micro-vision sensor for detection, and its defect is: because there are too many lines for the engraved line, a large number of single-row micro-vision sensors need to be used, and the cost is very high, so it is difficult to popularize and apply.

Contents of the invention

The purpose of the present invention is to provide a battery scoring line processing flatness detection system used in the solar thin film battery production line, which can quickly realize the calculation of the straightness of a single line segment, the line width change rate of a single line segment and the parallelism of three line segments , if there is an abnormality, an alarm will be issued, the fault will be judged and the location of the fault will be determined, and the straightness of each group of engraved lines will be recorded.

Another object of the present invention is to provide a method for detecting the flatness of the scribe line processing of micro-vision array solar thin-film cells, which has high detection accuracy.

The technical scheme adopted by the detection system of the present invention is: comprising a positioning platform, a solar thin-film battery fixed on the positioning platform, a micro-vision sensor array for obtaining the image information of solar thin-film battery scribe line processing is arranged above the solar thin-film battery, and the micro-vision sensor The array includes n microvision sensors arranged at intervals in the x direction and m identical microvision sensors arranged at intervals in the y direction; each microvision sensor is respectively connected to a DSP preprocessing module, and the DSP preprocessing module detects with a microcomputer through a data communication interface The system is connected, the x-direction transmission mechanism is connected in series between the data communication interface and the micro-vision sensor array, and the y-direction transmission mechanism is connected in series between the data communication interface and the positioning platform; the x-direction transmission mechanism includes an x-direction drive motor and an x-direction transmission mechanism. The screw and the micro-vision sensor bracket, the x-direction driving motor is fixedly connected with the x-direction transmission screw, and the x-direction transmission screw is fixedly connected with the micro-vision sensor bracket through a nut; each micro-vision sensor includes a direction fine-tuning bolt, a direction adjustment Iron sheet, area array digital camera and optical magnifying lens, the direction fine-tuning bolt is fixedly connected to the micro-vision sensor bracket, one side of the direction-adjusting iron sheet is fixedly connected to the direction fine-tuning bolt, and the other side is fixedly connected to the area array digital camera, and the optical magnifying lens is set on an area scan digital camera.

The detection method of detection system of the present invention comprises the steps:

A. Fine-tune the direction of the direction fine-tuning bolts of each micro-vision sensor, so that each micro-vision sensor is parallel to the engraved line on the solar thin-film battery;

B. The microcomputer detection system detects that the solar thin film battery is placed on the positioning platform, drives the motor in the x direction through the control interface, and drives the lead screw in the x direction to move the micro vision sensor array in the x direction to the first group of solar thin film battery markings. on the line position;

C. The microcomputer detection system drives the drive motor in the y direction through the control interface, and the positioning platform of the solar thin film battery is translated at an average speed in the y direction by the driving screw in the y direction. During the translation process, the DSP preprocessing module starts the corresponding The micro-vision sensor continuously collects the engraved line pictures of the solar thin film battery, and the collection speed is synchronized with the translation speed, so that the collected pictures can be connected together. While collecting and processing, the microcomputer detection system is sent to the detection system. The detection system stitches and calculates the straightness of a single line segment , the line width change rate of a single line segment and the parallelism of three line segments;

D. When the DSP preprocessing module has collected all the pictures in the y direction, it will return to the starting point along the y direction. If all the pictures have not been collected, the micro-vision sensor array will move to the x direction by the x direction transmission mechanism. On the position of the next set of solar thin film battery marks, go back to step C;

E. After all the pictures are collected and processed, the x-direction transmission mechanism moves the micro-vision sensor array to the starting point in the x-direction to prepare for the detection of the next solar thin-film battery.

The beneficial effects of the present invention are:

1. The micro-vision sensor array structure is used to detect the straightness of the solar thin film battery reticle processing. This serial and parallel coexistence work method not only overcomes the single row of micro-vision sensors to detect the straightness of the reticle processing, but also uses the number of micro-vision sensors. Large, high cost and difficult to promote, but also ensure the rapidity and accuracy of the detection work.

2. Since each micro-vision sensor can be fine-tuned in direction through the direction fine-tuning bolt, it is ensured that each micro-vision sensor can be parallel to the engraved line on the solar thin film battery.

3. The master-slave structure combined with DSP preprocessing module and microcomputer is used to make the detection fast and low cost.

Description of drawings

Fig. 1 is a schematic diagram of the connection structure of the detection system of the present invention.

FIG. 2 is a schematic diagram of the structure of the x-direction transmission mechanism 5 in FIG. 1 and its relationship with the micro-vision sensor array.

FIG. 3 is a structural schematic diagram of a microvision sensor 4 in the microvision sensor array in FIG. 1 .

In the figure: 1. positioning platform; 2. y-direction transmission mechanism; 3. micro-vision sensor array; 4. micro-vision sensor; 5. x-direction transmission mechanism; 6. data communication interface; 7. microcomputer detection system; 8. DSP preprocessing module; 9. micro-vision sensor bracket; 10. x-direction drive screw; 11. x-direction drive motor; 12. y-direction drive screw; 13. y-direction drive motor; 14. solar thin film battery; 16. Direction fine-tuning bolt; 17. Direction adjustment iron sheet; 18. Area array digital camera; 19. Optical magnifying lens.

Detailed ways

As shown in FIG. 1 , the solar thin film battery 14 is fixed on the positioning platform 1 , and a photosensitive sensor is installed on the positioning platform 1 to determine whether there is a solar thin film battery 14 on the positioning platform 1 . A micro-vision sensor array 3 is arranged above the solar thin-film battery 14 , and the micro-vision sensor array 3 is used to obtain the image information of the solar thin-film battery 14 scribing process. The microvision sensor array 3 includes n microvision sensors 4 arranged at intervals in the x direction and m microvision sensors 4 arranged at intervals in the y direction. Each micro-vision sensor 4 is connected to a DSP preprocessing module 8 respectively. Therefore, the DSP preprocessing module 8 has m*n modules in total, and the DSP preprocessing module 8 is connected to the microcomputer detection system 7 through the data communication interface 6 .

The positioning platform 1 is connected with a y-direction transmission mechanism 2 , and the y-direction transmission mechanism 2 includes a y-direction driving motor 13 and a y-direction transmission screw 12 . The y-direction driving motor 13 is fixedly connected with the y-direction transmission screw 12, and the y-direction transmission screw 12 is fixedly connected with the positioning platform 1 through a nut. The y-direction transmission mechanism 2 is connected in series between the data communication interface 6 and the positioning platform 1, and the y-direction drive motor 13 is driven by the microcomputer detection system 7 through the control data communication interface 6, and then the y-direction transmission screw 12 is driven by a nut. The positioning platform 1 translates at a uniform speed in the y direction.

As shown in FIG. 2 , the microvision sensor array 3 is connected to the x-direction transmission mechanism 5 , and the x-direction transmission mechanism 5 includes an x-direction driving motor 11 , an x-direction transmission screw 10 and a microvision sensor bracket 9 . The x-direction driving motor 11 is fixedly connected with the x-direction transmission screw 10, and the x-direction transmission screw 10 is fixedly connected with the microvision sensor bracket 9 through a nut, and each microvision sensor 4 is respectively fixed on the microvision sensor bracket 9. An x-direction transmission mechanism 5 is connected in series between the data communication interface 6 and the micro vision sensor array 3 . The microcomputer detection system 7 drives the x-direction drive motor 5 through the control data communication interface 6, and then drives the screw 10 in the x-direction through the nut to make the micro-vision sensor array 3 move in the x-direction to a certain set of marking lines of the solar thin film battery 14 position.

As shown in FIG. 3 , each micro-vision sensor 4 in the micro-vision sensor array 3 includes a direction fine-tuning bolt 16 , a direction-adjusting iron sheet 17 , an area array digital camera 18 and an optical magnifying lens 19 . The direction fine-tuning bolt 16 is threadedly connected with the micro-vision sensor bracket 9, and one side of the direction-adjusting iron plate 17 is fixedly connected with the direction fine-tuning bolt 16, and the other side is fixedly connected with the area array digital camera 18, and the optical magnifying lens 19 is arranged on the area array digital camera 18. superior.

The working principle of the above-mentioned detection system is: the DSP preprocessing module 8 collects the pictures of the solar thin-film battery reticles corresponding to the micro-vision sensors 4, and performs necessary processing. The DSP preprocessing module 8 transmits the processed data to the microcomputer detection system 7. After the control signal sent by the microcomputer detection system 7 is converted and power amplified, the driving motor in the x direction and the y direction is driven through the control data communication interface 6, Then the positioning platform 1 of the solar thin film battery 14 is moved back and forth in the y direction by the transmission lead screw in the x direction and the y direction through the nut, so that the micro-vision sensor array 3 is moved back and forth in the x direction to realize the solar thin film battery 14 Collection of engraved pictures. The microcomputer detection system 7 receives the image processing information sent by the DSP preprocessing module 8 and calculates the straightness of the solar thin film battery 14 after the splicing process.

Before the detection system works, first fine-tune the direction of each micro-vision sensor 4 through the direction fine-tuning bolt 16 to ensure that each micro-vision sensor 4 can be parallel to the scribe line on the solar thin film battery 14 . The microcomputer detection system 7 detects that the solar thin-film battery 14 is placed on the positioning platform 1, drives the x-direction drive motor 11 through the control data communication interface 6, and then drives the screw 10 in the x-direction through the nut to make the micro-vision sensor array 3 in the x direction. direction and move to the position of the first group of solar thin film cells 14 marking lines. The y-direction drive motor 13 is driven by the microcomputer detection system 7 through the control data communication interface 6, and the positioning platform 1 of the solar thin film battery is translated at an average speed along the y direction by the y-direction driving screw 12 through the nut. During the translation process, the micro-vision sensor array 3 regularly takes pictures of the reticle on the solar thin-film battery 14, and the corresponding micro-vision sensors 4 are started regularly by 8 DSP preprocessing modules to continuously collect 14 reticle pictures of the solar thin-film battery. The picture signal output by each micro-vision sensor 4 is sent to the DSP preprocessing module 8, and its collection speed is synchronized with the translation speed, so that the collected pictures can be connected together, and the microcomputer detection system 7 is sent to the microcomputer detection system 7 while collecting and processing. Splice and calculate the straightness of a single line segment, the line width change rate of a single line segment and the parallelism of three line segments. After the micro-vision sensor array 3 along the Y direction has collected all the miniature images, the micro-vision sensor array 3 moves a certain distance along the X direction to collect the next group of miniature images, and proceed in turn until all the miniature images are collected. After the DSP preprocessing module 8 has collected all the pictures on the y direction, the micro-vision sensor array 3 returns to the starting point along the y direction, and when the micro-computer detection system 7 collects the next micro-image at the micro-vision sensor array 3, it will Process the input micro image information, so that within 60 seconds, collect and calculate the straightness of a single line segment, the line width change rate of a single line segment and the parallelism of three line segments, when the test value exceeds the set value , the system automatically prompts relevant information, saves the image of the relevant location, and saves the relevant data. If all the pictures have not been collected, the micro-vision sensor array 3 is moved to the next group of solar thin film battery 14 marking line positions in the x direction by the x direction transmission mechanism 5 to continue collecting the solar thin film battery 14 marking line pictures. After all the pictures are collected and processed, the micro-vision sensor array 3 is moved to the starting point in the x direction by the x direction transmission mechanism 5 to prepare for the detection of the next solar thin film battery 14 .

Claims (3)

1. micro-vision array solar energy hull cell groove processing flatness detection system; Comprise locating platform (1), be fixed in the solar film battery (14) on the locating platform (1); It is characterized in that: solar film battery (14) top is provided with one and is used to obtain little view sensor array (3) that solar film battery (14) groove is processed image information, and little view sensor array (3) is included in n little view sensor (4) and the m that is provided with at interval in the y direction identical little view sensor (4) that the x direction is provided with at interval; Each little view sensor (4) connects DSP pre-processing module (8) respectively; DSP pre-processing module (8) links to each other with microcomputer detection system (7) through data communication interface (6); Be connected in series x direction gear train (5) between data communication interface (6) and the little view sensor array (3), be connected in series y direction gear train (2) between data communication interface (6) and the locating platform (1);

Said x direction gear train (5) comprises x direction drive motor (11), x direction turn-screw (10) and little view sensor support (9); X direction drive motor (11) is fixedly connected with x direction turn-screw (10), and x direction turn-screw (10) is paid little view sensor support (9) through nut and is fixedly connected;

Each said little view sensor (4) comprises directional trim bolt (16), direction adjusting iron plate (17), face battle array digital camera (18) and optical loupes head (19); Directional trim bolt (16) is fixedly connected with little view sensor support (9); The one side that direction is regulated iron plate (17) is fixedly connected with directional trim bolt (16); Another side is fixedly connected with face battle array digital camera (18), and optical loupes head (19) is arranged on the face battle array digital camera (18).

2. micro-vision array solar energy hull cell groove processing flatness detection system according to claim 1; It is characterized in that: said y direction gear train (2) comprises y direction drive motor (13) and y direction turn-screw (12); Y direction drive motor (13) is fixedly connected with y direction turn-screw (12), and y direction turn-screw (12) is paid locating platform (1) through nut and is fixedly connected.

3. detection method of micro-vision array solar energy hull cell groove processing flatness detection system according to claim 1 is characterized in that adopting following steps:

A, the directional trim bolt (16) of each little view sensor (4) is done directional trim, make each little view sensor (4) parallel with the groove on the solar film battery (14);

B, microcomputer detection system (7) detect solar film battery (14) and are placed on the locating platform (1); Drive x direction drive motor (5) through control data communication interface (6), little view sensor array (3) is being moved on first group of solar film battery (14) groove position on the x direction by x direction turn-screw (10);

C, drive y direction drive motor (2) through control data communication interface (6) by microcomputer detection system (7); Make locating platform (1) equal fast translation on the y direction of solar film battery (14) by y direction turn-screw (12); In the translation process, regularly start corresponding little view sensor (4) and constantly gather solar film battery (14) groove picture by DSP pre-processing module (8); Picking rate and point-to-point speed are synchronous; The picture of being gathered is engaged togather, on one side acquisition process send microcomputer detection system (7) on one side, detection system splicing also calculates the linearity of wall scroll line segment, the line width variation rate of wall scroll line segment and the depth of parallelism of three line segments;

D, after DSP pre-processing module (8) has all been gathered all pictures on the y direction; Little view sensor array (3) turns back to starting point along the y direction; If do not gathered all pictures; Make little view sensor array (3) moving on the x direction on next group solar film battery (14) groove position by x direction gear train (5), go back to step C;

E, if all picture collections and handle after, make little view sensor array (3) on the x direction, move to the detection that starting point is prepared next solar film battery (14) by x direction gear train (5).

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