CN117702265A

CN117702265A - Charging prompt information determining method and device, electronic equipment and storage medium

Info

Publication number: CN117702265A
Application number: CN202310207178.2A
Authority: CN
Inventors: 郭力
Original assignee: Longi Green Energy Technology Co Ltd
Current assignee: Longi Green Energy Technology Co Ltd
Priority date: 2023-03-06
Filing date: 2023-03-06
Publication date: 2024-03-15

Abstract

The embodiment of the invention provides a method, a device, equipment and a medium for determining charging prompt information. The method comprises the following steps: obtaining a melt image of a Czochralski single crystal device, identifying a melted region in the melt image, calculating the circularity of the melted region, determining charging prompt information of the Czochralski single crystal device according to the change rate of the circularity and a preset charging rule, so that charging is automatically prompted in a charging stage, no whole-course intervention of an operator is needed, the problem of more working hours of the operator is avoided, the working efficiency is improved, the operator can be prevented from missing charging time by real-time automatic detection, and the accuracy of determining the charging time is improved.

Description

Charging prompt information determining method and device, electronic equipment and storage medium

Technical Field

The present invention relates to the field of crystal preparation technology, and in particular, to a method for determining a charging prompt message, a device for determining a charging prompt message, an electronic device, and a storage medium.

Background

The preparation process of the monocrystalline silicon material mainly comprises a Czochralski method (Czochralski process/CZ), and the polycrystalline silicon raw material is refined into monocrystalline silicon by the Czochralski method. The process of generating rod-shaped monocrystalline silicon crystals in the process of pulling up the monocrystalline comprises the steps of charging, heating and melting, temperature adjustment, seeding, shouldering, shoulder turning, constant diameter ending and the like.

When the polysilicon raw material is melted, seeding cannot be started immediately, and the temperature is higher than the seeding temperature, and the temperature must be adjusted to the seeding temperature through cooling. Seeding is a process in which a seed crystal (i.e., a shaped single crystal) previously loaded onto the end of a wire rope is brought into contact with a liquid surface, and silicon molecules are grown in the lattice direction of the seed crystal at a seeding temperature, thereby forming a single crystal. The shouldering is to gradually grow the crystal diameter to a required diameter, and a section of crystal with the diameter gradually becoming larger to the required diameter or so is pulled out along with the length gradually becoming longer in the shouldering process so as to eliminate crystal dislocation. After the crystal grows to the diameter required by production in the shouldering process, the crystal enters the shouldering process. The shoulder is to control the crystal diameter to the diameter required for production. And after the shoulder turning is finished, the step of equal diameter control is carried out, and in the step, the crystal is grown according to the set diameter equal diameter through automatic control of the pulling speed and the temperature.

In the production of the monocrystalline silicon rod, the secondary feeding is divided into a first section and a circulating section. The secondary feeding in the first section refers to a feeding process performed after the primary feeding and the melting are completed, and the feeding in the circulating section refers to a feeding process performed after the crystal bar is lifted. Because the capacity of the furnace body is limited, the one-time feeding amount is limited. After the crystal is successfully drawn, the material needs to be fed again, and the production is continued after the material is finished. The Czochralski crystal pulling apparatus repeatedly pulls and pulls the crystal for production.

In the prior art, the charging needs to be carried out for a plurality of times in one charging stage, and whether charging can be carried out is judged manually in real time. If the judgment is too early, the feeding cannot be continued to wait. If the judgment is delayed, too much solution is contained in the crucible, silicon is easy to splash during feeding, and wire breakage occurs, so that the feeding cannot be performed. At present, an early warning mechanism does not exist in the feeding stage, operators are required to intervene in the whole process, the labor hour occupied by the operators is more, overall planning on feeding work is difficult, the working efficiency is low, feeding time is difficult to accurately judge, and the like.

Disclosure of Invention

In view of the above problems, embodiments of the present invention are provided to provide a method for determining charging prompt information, which overcomes the above problems or at least partially solves the above problems, so as to solve the problems that a pre-warning mechanism is not available in a charging stage, it is difficult to plan a charging job in an overall manner, more occupied man-hours are required, working efficiency is low, and charging timing is difficult to accurately judge.

Correspondingly, the embodiment of the invention also provides a charging prompt information determining device, electronic equipment and a storage medium, which are used for ensuring the realization and application of the method.

In order to solve the above problems, the embodiment of the invention discloses a method for determining charging prompt information, which comprises the following steps:

Acquiring a melt image of a Czochralski single crystal apparatus;

identifying a melted region in the frit image;

calculating the circularity of the melted region;

and determining feeding prompt information of the Czochralski crystal pulling equipment according to the change rate of the circularity and a preset feeding rule.

Optionally, the charging prompt information includes prompt information of charging time of the czochralski single crystal equipment, and determining charging prompt information of the czochralski single crystal equipment according to the change rate of the circularity and a preset charging rule includes:

and determining prompt information of the charging time of the Czochralski crystal pulling equipment when the change rate of the circularity exceeds a preset first change rate threshold.

Optionally, the charging prompt information includes a prompt information for improving a priority of charging the czochralski single crystal growing apparatus, and determining the charging prompt information of the czochralski single crystal growing apparatus according to a change rate of the circularity and a preset charging rule, including:

and determining prompt information for improving the priority of feeding the Czochralski single crystal equipment when the change rate of the circularity exceeds a preset second change rate threshold.

Optionally, the charging prompt information includes a prompt information that a charging mode of the czochralski crystal growing apparatus is a gentle charging mode, and determining the charging prompt information of the czochralski crystal growing apparatus according to a change rate of the circularity and a preset charging rule includes:

And when the change rate of the circularity exceeds a preset third change rate threshold value, determining that the charging mode of the Czochralski single crystal pulling equipment is a prompt message of a gentle charging mode.

Optionally, determining the charging prompt information of the czochralski crystal growing device according to the change rate of the circularity and a preset charging rule includes:

determining charging prompt information of urgency of corresponding charging operation according to the change rate of the circularity and a preset fourth change rate threshold value in the preset charging rule; wherein the preset charging rules comprise preset fourth rate of change thresholds corresponding to urgency of different charging operations.

Optionally, the method further comprises:

acquiring a melt image of the Czochralski single crystal apparatus;

identifying unmelted and melted regions in the frit image;

determining the duty ratio information of the unmelted areas in the melt image in the melt area of the melt image according to the unmelted areas and the melted areas in the melt image;

and determining the charging time of the Czochralski crystal pulling equipment according to the duty ratio information and a preset charging rule.

Optionally, the identifying the melted region in the frit image includes:

Inputting a melting identification model into a melting image, wherein the melting identification model is obtained by training a melting image sample, and a melted area label and an unmelted area label which are correspondingly marked;

and outputting unmelted areas and melted areas in the melt image by the melting identification model according to the melt image.

The embodiment of the invention also discloses a device for determining the charging prompt information, which comprises the following steps:

the image acquisition module is used for acquiring a melting stock image of the Czochralski crystal growing equipment;

a region identification module for identifying a melted region in the melt image;

the circularity calculating module is used for calculating the circularity of the melted region;

and the prompt information determining module is used for determining the charging prompt information of the Czochralski crystal pulling equipment according to the change rate of the circularity and a preset charging rule.

Optionally, the feeding prompt information includes prompt information of feeding time of the czochralski crystal growing apparatus, and the prompt information determining module includes:

the first prompt information determining module is used for determining prompt information of charging time of the Czochralski crystal growing equipment when the change rate of the circularity exceeds a preset first change rate threshold value.

Optionally, the feeding prompt information includes a prompt information for improving a priority of feeding the czochralski crystal growing apparatus, and the prompt information determining module includes:

and the second prompt information determining module is used for determining prompt information for improving the priority of charging the Czochralski crystal growing equipment when the change rate of the circularity exceeds a preset second change rate threshold value.

Optionally, the feeding prompt information includes a prompt information that a feeding mode of the czochralski crystal growing device is a gentle feeding mode, and the prompt information determining module includes:

and the third prompt information determining module is used for determining that the charging mode of the Czochralski crystal growing equipment is the prompt information of a gentle charging mode when the change rate of the circularity exceeds a preset third change rate threshold value.

Optionally, the prompt information determining module includes:

a fourth prompt information determining module, configured to determine charging prompt information of urgency of a corresponding charging operation according to the rate of change of the circularity and a preset fourth rate of change threshold in the preset charging rule; wherein the preset charging rules comprise preset fourth rate of change thresholds corresponding to urgency of different charging operations.

Optionally, the apparatus further comprises:

a region identification module for identifying unmelted and melted regions in the melt image;

the system comprises a duty ratio determining module, a control module and a control module, wherein the duty ratio determining module is used for determining duty ratio information of unmelted areas in a molten material image in the molten material area of the molten material image according to unmelted areas and melted areas in the molten material image;

and the charging time determining module is used for determining the charging time of the Czochralski crystal pulling equipment according to the duty ratio information and a preset charging rule.

Optionally, the area identifying module includes:

the image input sub-module is used for inputting the melting image into a melting identification model, wherein the melting identification model is obtained by training a melting image sample, and a melted area label and an unmelted area label which correspond to the marks;

and the region output sub-module is used for outputting unmelted regions and melted regions in the melt image according to the melt image by the melting identification model.

The embodiment of the invention also discloses an electronic device which is characterized by comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus;

A memory for storing a computer program;

and a processor for performing the method steps described above when executing the program stored on the memory.

The embodiment of the invention also discloses a readable storage medium, and when the instructions in the storage medium are executed by a processor of the electronic equipment, the electronic equipment can execute one or more of the charging prompt information determining methods in the embodiment of the invention.

The embodiment of the invention has the following advantages:

according to the embodiment of the invention, the molten material image of the Czochralski single crystal equipment is obtained, the molten area in the molten material image is identified, the circularity of the molten area is calculated, and the charging prompt information of the Czochralski single crystal equipment is determined according to the change rate of the circularity and the preset charging rule, so that the charging is automatically prompted in the charging stage, the whole process intervention of an operator is not needed, the problem of more working hours of the operator is avoided, the working efficiency is improved, the operator can be prevented from missing the charging time by real-time automatic detection, and the accuracy of determining the charging time is improved.

Drawings

FIG. 1 is a flow chart of steps of an embodiment of a method for determining a loading hint information of the present invention;

FIG. 2 is an image of molten material and images of unmelted and melted regions at multiple times during an early stage of molten material;

FIG. 3 is an image of a frit and images of unmelted and melted regions at multiple times later in the frit;

FIG. 4 is a flow chart of steps of an embodiment of a method for determining a loading hint information of the present invention;

FIG. 5 is a frit image (left) and images of melted and unmelted areas (right);

FIG. 6 is a schematic illustration of the area ratio of unmelted areas to melted areas;

FIG. 7 is a schematic diagram of partial data for a certain stage of furnace frit;

FIG. 8 is a schematic representation of the average luminance over time for unmelted areas;

FIG. 9 is a schematic illustration of marking unmelted and melted regions;

FIG. 10 is a block diagram illustrating an embodiment of a charging prompt message determining apparatus according to the present invention;

FIG. 11 is a block diagram illustrating a computing device for charging cue information determination, according to an example embodiment.

In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.

Referring to fig. 1, a flowchart illustrating steps of an embodiment of a method for determining a charging prompt message according to the present invention may specifically include the following steps:

Step 101, obtaining a melt image of a Czochralski crystal growing apparatus.

In the embodiment of the present invention, the Czochralski process is a process of pulling a raw material into a single crystal using a Czochralski method, for example, a process of Czochralski silicon. The process of pulling up single crystals can be divided into a charging stage, a melting stage, a temperature adjusting stage, a seeding stage and the like.

In the embodiment of the invention, the charging stage in the process of pulling up the single crystal is required to be carried out in multiple times, for example, 5 barrels of materials are required to be added in one charging stage, after the first barrel of materials is added, the first barrel of materials starts to melt, and in the melting process of the first barrel of materials, the next barrel of materials can be added again until the materials added before reach a proper melting degree, and the charging is carried out in this way until the 5 barrels of materials are all added.

In an embodiment of the present invention, the Czochralski crystal apparatus is an apparatus for Czochralski single crystal, such as a single crystal furnace for Czochralski single crystal silicon. The inside of the crucible is photographed by the camera, and when the material is fed into the crucible, the process of melting the crystal from the solid state to the liquid state can be observed.

In the embodiment of the invention, the surface of the crucible, where the molten material occurs, is photographed, and the obtained image is recorded as a molten material image or a molten material image. The same image can be used as a melting material image or a melting material image. The melt image or the melt image includes solid and liquid images formed by melting the raw material, and may also include partial images of the crucible or partial images of the heat shield, etc. In particular, an appropriate image may be taken according to actual needs, which is not limited in the embodiment of the present invention.

For example, after the first charge of the charge phase, the charged material starts to melt, and a melt image is acquired multiple times, for example, every 5 seconds, or multiple melt images are acquired at multiple set time points, so that detection is continuously performed during the melting process of the material, so as to determine the charging timing in time.

Step 102, a melted region in a frit image is identified.

In an embodiment of the present invention, the melt image includes unmelted regions and melted regions. Wherein the melted region is identified. Implementations of identifying melted regions may include a variety of. For example, a melt image is input into a melt recognition model, wherein the melt recognition model is trained from a sample of the melt image, and correspondingly marked melted region tags and unmelted region tags, and unmelted regions and melted regions in the melt image are output from the melt recognition model according to the melt image. For another example, unmelted areas and melted areas are partitioned in the melt image based on gray values of pixels in the melt image. And in particular may comprise any suitable implementation, to which embodiments of the invention are not limited.

And step 103, calculating the circularity of the melted region.

In the embodiment of the invention, the circularity is a feature of the graph in image processing. The calculation formula of the circularity is described as area multiplied by 4pi divided by perimeter square, namely e= (4pi×area)/(perimeter×perimeter), and when e is 1, the graph is circular; the smaller e, the more irregular the pattern, the greater the gap from the circle.

In an embodiment of the present invention, for a melted region, the area of the melted region, and the circumference are first determined. And then obtaining the circularity of the melted region according to the calculation mode.

And 104, determining the charging prompt information of the Czochralski crystal pulling equipment according to the change rate of the circularity and a preset charging rule.

Since the heating devices in the crucible are distributed around the bottom of the crucible, the solid material will first melt from the bottom and around after being added. And the camera for observation is positioned at the upper part of the crucible, so the melting process seen in the field of view of the camera is as follows: since the solid material is more just fed, the melting only occurs at the edge of the material, so that the shape change of the melted region is slow, and as shown in fig. 2, the melting material image and the unmelted region and the melted region image at a plurality of time periods in the early stage of the melting material can be calculated to conclude that the circularity change of the melted region is slow. While as melting proceeds, the solid material thins, melting begins to occur inside the solid material and the edge of the solid material melts faster, at which time the shape of the melted region changes very rapidly, as shown in fig. 3 by the molten material image and the unmelted region and the melted region image at a plurality of times later in the molten material, it can be concluded by calculation that the change in circularity of the melted region is rapid.

The change of the melting degree can be well reflected according to the change of the circularity of the melted region. For example, fig. 2 and 3 are images in the order of melting time, and the duty ratio information of unmelted areas corresponding to each of the melt images is calculated, the brightness information of the unmelted areas, and the circularity of the melted areas. As can be seen from fig. 2, the circularity of the melted region varies smoothly (because the melted region is very irregular) at a duty ratio of 0 to 0.5, and the circularity fluctuates slightly above and below a lower value. As can be seen from fig. 3, the degree of circularity of the melted region varies greatly when the ratio of the unmelted region is 0.26 to 0.13, and conversely, the ratio of the unmelted region can be regarded as small when the ratio of the circularity of the melted region varies more than a certain degree. The rate of change of circularity may reflect the degree of melting.

In the embodiment of the invention, the preset charging rule is a preset rule for determining charging prompt information. The charging time close to the starting time of the time window can be determined according to the change rate of the circularity by reasonably setting the preset charging rules, a plurality of charging times can be determined by setting the preset charging rules, and different charging times are used for distinguishing the urgency of different charging operations.

In an optional embodiment of the present invention, determining a specific implementation manner of the charging prompt information of the czochralski crystal growing apparatus according to the change rate of the circularity and a preset charging rule may include: determining charging prompt information of urgency of corresponding charging operation according to the change rate of the circularity and a preset fourth change rate threshold value in the preset charging rule; wherein the preset charging rules comprise preset fourth rate of change thresholds corresponding to urgency of different charging operations.

The preset fourth rate of change threshold may be set for different urgency of the charging operation in the preset charging rules. And when the change rate of the circularity reaches a certain preset fourth change rate threshold value, determining charging prompt information of urgency of corresponding charging operation. Through the urgent reinforced prompt message of the different reinforced operations of confirm, carry on more accurate suggestion to staff's work arrangement to strengthen the production to the workshop and manage and control, then improve work efficiency.

For example, the first charging prompt message may be near the start time of the time window, the second charging prompt message may be near the middle of the time window, the third charging prompt message may be near the end time of the time window, and the like, and specifically may include any suitable charging prompt message, which is not limited in this embodiment of the present invention. For example, a state of near complete melting is determined based on the rate of change of circularity, which indicates that the optimal charging timing is near or has ended.

In the embodiment of the present invention, the charging prompt information refers to information for prompting a charging operation, for example, prompt information of charging time of the czochralski crystal growing device, prompt information for improving priority of charging the czochralski crystal growing device, prompt information of charging mode of the czochralski crystal growing device in a gentle charging mode, or any other suitable prompt information, which is not limited in the embodiment of the present invention.

In the embodiment of the invention, the charging prompt information can comprise at least one of the following: the method comprises the steps of prompting information of charging time of the Czochralski single crystal equipment, prompting information for improving priority of charging the Czochralski single crystal equipment, and prompting information that the charging mode of the Czochralski single crystal equipment is a gentle charging mode.

A prompt message is used for prompting the charging time of the Czochralski single crystal equipment so as to provide early warning for staff and prevent the staff from missing the charging time of the Czochralski single crystal equipment.

The other prompting information is used for prompting the priority of the charging of the Czochralski single crystal equipment, that is, when a control system or a worker needs to sequentially execute a plurality of tasks, the priority of the task of charging the Czochralski single crystal equipment is improved so as to feed the material earlier, avoid the worker missing the optimal charging time of the Czochralski single crystal equipment, facilitate the workshop to process emergency matters according to the priority, comprehensively manage the operation path of the worker, and reduce the risks such as material splashing during charging.

The prompt information is used for prompting that the charging mode of the Czochralski single crystal pulling equipment is a gentle charging mode, that is, the optimal charging time is finished, and the rapid charging mode is still adopted at the moment to possibly cause unsafe conditions such as splashing, so that the charging mode is switched to the gentle charging mode, and the charging safety is improved. The gentle charging mode is a slower charging mode closer to the surface of the molten material, and may be an automatic charging mode or a manual charging mode, which is not limited in the embodiment of the present invention.

Through the setting to predetermineeing the feeding rule, can realize that the automatic detection in the melting process feeds in the opportunity near the end or has finished to send the suggestion accordingly, perhaps change the priority of feeding, perhaps switch into suitable feeding mode, thereby avoid the staff to miss the feeding opportunity, perhaps change into mild feeding mode when feeding opportunity has finished, avoid feeding to cause the circumstances such as splash, improved the security of feeding.

In an optional embodiment of the present invention, the charging prompt information includes a prompt information of a charging timing of the czochralski single crystal growing apparatus, and determining the charging prompt information of the czochralski single crystal growing apparatus according to the change rate of the circularity and a preset charging rule includes:

In an optional embodiment of the present invention, the feeding prompt information includes a prompt information for improving a priority of feeding the czochralski single crystal apparatus, and determining the feeding prompt information of the czochralski single crystal apparatus according to the change rate of the circularity and a preset feeding rule includes:

In an optional embodiment of the present invention, the charging prompt information includes a prompt that a charging mode of the czochralski crystal growing apparatus is a gentle charging mode, and determining the charging prompt information of the czochralski crystal growing apparatus according to the change rate of the circularity and a preset charging rule includes:

The preset first change rate threshold, the preset second change rate threshold, and the preset third change rate threshold may be set according to actual needs, which is not limited in the embodiment of the present invention.

For example, a plurality of preset change rate thresholds are arranged in the preset charging rules, and prompt information of charging time of the Czochralski single crystal pulling device is determined when the change rate of the circularity exceeds a preset first change rate threshold. And determining prompt information for improving the priority of feeding the Czochralski single crystal equipment when the change rate of the circularity exceeds a preset second change rate threshold. And when the change rate of the circularity exceeds a preset third change rate threshold value, determining that the charging mode of the Czochralski single crystal pulling equipment is a prompt message of a gentle charging mode.

For another example, a first rate of change threshold value is preset=a second rate of change threshold value is preset=a third rate of change threshold value is preset. When the change rate of the circularity exceeds a preset first change rate threshold value, determining prompt information of charging time of the Czochralski single crystal equipment, prompt information for improving priority of charging the Czochralski single crystal equipment, and prompt information that the charging mode of the Czochralski single crystal equipment is a gentle charging mode.

In an alternative embodiment of the present invention, as shown in fig. 4, the method may specifically include the following steps:

step 105, identify unmelted and melted regions in the frit image.

In the embodiment of the present invention, the specific implementation manner of identifying the melted region may refer to the description of identifying the unmelted region and the melted region in the melt image in the foregoing embodiment, which is not repeated herein.

And 106, determining the duty ratio information of the unmelted area in the melt image in the melt area of the melt image according to the unmelted area and the melted area in the melt image.

In an embodiment of the invention, the unmelted areas and the melted areas together comprise a melt area of the melt image. And calculating the ratio of the area of the unmelted area to the area of the molten material area to obtain the duty ratio information of the unmelted area in the molten material area. For example, as shown in fig. 5, an unmelted area (darker area in the drawing) occupies the area ratio of a molten material area (sum of darker area and lighter area in the drawing), wherein the portion whose periphery is darkest is an image of a heat shield, which does not belong to the molten material area.

In the embodiment of the invention, the data of observing the molten material show that the solid ratio in the molten material process gradually decreases, but the molten material process is accompanied by recrystallization of the melted region, the crystallized region is identified as an unmelted region, and the phenomenon leads to the fact that the ratio of the unmelted region in the molten material process does not decrease monotonically but oscillates. And therefore cannot give accurate charging timing based on the duty information of the unmelted areas alone. Experimental results as shown in fig. 6, the horizontal axis represents time and the vertical axis represents the area ratio of unmelted regions to molten material regions. Therefore, the accuracy of determining the charging timing can be improved by combining the brightness information and the duty ratio information to determine the charging timing.

A schematic of partial data for a certain frit stage is shown in fig. 7. From top to bottom in the figure are a plurality of melt images taken over time, and corresponding images of the identified melted and unmelted areas. It can be seen from the figure that the ratio of unmelted areas changes with time, and the brightness of unmelted areas changes with time.

And step 107, determining the charging time of the Czochralski crystal pulling equipment according to the duty ratio information and a preset charging rule.

In the embodiment of the invention, for a Czochralski crystal growing apparatus, a time window is provided during the charging phase, which is suitable for charging operations. The charging occasion refers to a certain time within the time window and in the vicinity. The preset charging rules are rules which are preset and used for determining charging time. Typically by a reasonable setting of the preset charging rules, the charging occasion should be as close as possible to the start time of the time window. The method and the device can also determine a plurality of charging occasions through setting preset charging rules, wherein different charging occasions are used for distinguishing urgency of different charging operations, for example, the first charging occasion is close to the starting time of the time window, the second charging occasion is close to the middle of the time window, the third charging occasion is close to the ending occasion of the time window, and the like, and particularly any applicable charging occasion can be included, and the embodiment of the invention is not limited to the above.

For example, one preset charging rule is to determine charging timing according to the duty ratio information, if the duty ratio information is within a preset duty ratio range. Other applicable factors besides the duty ratio information can be considered in the preset charging rule, and the embodiment of the invention is not limited to this.

In an alternative embodiment of the present invention, determining the specific implementation of the ratio information of the unmelted area in the melt image to the melted area in the melt image according to the unmelted area and the melted area in the melt image may further include: calculating an average value of the duty ratio information of unmelted areas in a plurality of melt images as the duty ratio information; wherein the plurality of melt images are a plurality of melt images acquired by one rotation of a crucible of the Czochralski crystal growing apparatus.

For a full-field melt image, namely, a camera of the Czochralski crystal growing device can see all melt areas in the crucible, and the duty ratio information obtained by calculating a single image is the final duty ratio information. However, for a molten material image with a small field of view, that is, a camera of the Czochralski crystal growing apparatus only sees a part of the molten material region in the crucible, duty ratio information obtained by calculating all the photographed images of one rotation of the crucible is averaged to obtain final duty ratio information. In this way, the problem of inaccurate duty ratio information caused by different shooting areas or shooting angles is avoided, and the accuracy of determining the feeding timing is improved.

In an alternative embodiment of the present invention, it may further include: luminance information of an unmelted area in a frit image is acquired. In a specific implementation manner of determining the charging time of the czochralski single crystal apparatus according to the duty ratio information and a preset charging rule, the method may include: and determining the charging time of the Czochralski crystal pulling equipment according to the duty ratio information, the brightness information and a preset charging rule.

In the embodiment of the invention, since the equipment for heating in the Czochralski single crystal growing equipment is at the bottom, the material (such as silicon material) added first, i.e. the material at the bottom, will melt first, and the material added last, i.e. the material at the surface, will melt last. As the frit progresses, the thickness of unmelted material becomes thinner and the temperature of unmelted material increases gradually, so that the brightness of the unmelted area observed by the camera increases.

In the embodiment of the present invention, after many experiments, the inventors choose to use the brightness of the unmelted area instead of the brightness of the melted area, such as the molten material image (left) and the images of the melted area and the unmelted area (right) shown in fig. 5, because the melted area is a smooth liquid surface, the brightness of the melted area is easily affected by factors such as light, and the unmelted area is a non-smooth solid, and the influence of factors such as light on the brightness of the unmelted area is small. As shown in fig. 8, a graph of the average luminance of unmelted areas over time is shown, with the horizontal axis representing time and the vertical axis representing average luminance of unmelted areas. Fig. 8 shows the change in average luminance of unmelted areas over time during melting, which is noted 255 because unmelted areas are not present after full melting.

In the embodiment of the present invention, the luminance information refers to information for characterizing the luminance of the unmelted area. The frit image includes a corresponding luminance value for each pixel. Luminance information of the unmelted areas can be acquired from the frit image.

The preset charging rules may also consider luminance information in addition to duty cycle information. For example, in the case where the brightness information satisfies the brightness-related rule and the duty information satisfies the duty-related rule, the charging timing is determined. Any applicable rule may be preset in particular, which is not limited in the embodiment of the present invention.

In an optional embodiment of the present invention, the determining, according to the duty ratio information, the brightness information and a preset charging rule, a specific implementation manner of the charging timing of the czochralski crystal growing apparatus may include: calculating the average brightness of unmelted areas in the melt image according to the brightness information; and determining the charging time under the condition that the duty ratio information is in a preset duty ratio range in the preset charging rule and the average brightness of unmelted areas in the molten material image exceeds a preset brightness threshold in the preset charging rule.

If a duty ratio range is preset for the duty ratio information, the duty ratio information is recorded as a preset duty ratio range. When the duty ratio information exceeds the upper limit of the preset duty ratio range, the charging time can be directly determined. However, since the duty ratio of the unmelted region does not decrease monotonously but oscillates down, the duty ratio information may have reached the charging timing when the upper limit of the preset duty ratio range is not exceeded.

Therefore, when the duty ratio information is in the preset duty ratio range in the preset charging rule and the average brightness of the unmelted area exceeds the preset brightness threshold in the preset charging rule, the charging time is determined, and the accuracy of determining the charging time can be improved. The preset duty ratio range and the preset brightness threshold may be set according to practical situations, for example, determined through multiple experiments, which is not limited in the embodiment of the present invention.

Wherein, according to the brightness information, the average brightness of the unmelted area is calculated. For example, an average value of luminance values of respective pixel points of the unmelted area is calculated to obtain an average luminance. The preset brightness threshold may be set in actual situations, for example, determined through multiple experiments, which is not limited in the embodiment of the present invention.

For example, the project is deployed to an industrial personal computer or an inference server, a melting material image acquired by a camera is operated to obtain duty ratio information and brightness information of an unmelted area, charging time is determined according to the duty ratio information and brightness information of the unmelted area, and a signal is sent to a control system. The control system realizes automatic feeding or prompts manual starting of a feeding procedure.

According to the automatic detection of the charging time of the brightness of the unmelted area, the real-time automatic detection can avoid operators missing the charging time, the brightness of the unmelted area mainly depends on the thickness of the solid on the surface of the liquid, the influence of factors such as recrystallization in the melting process is small, the charging time can be accurately determined, and the accuracy of the charging time determination is improved.

In an alternative embodiment of the present invention, a specific implementation of identifying unmelted areas in a melt image may include: inputting a melting identification model into a melting image, wherein the melting identification model is obtained by training a melting image sample, and a melted area label and an unmelted area label which are correspondingly marked; and outputting unmelted areas and melted areas in the melt image by the melting identification model according to the melt image.

The unmelted areas can be learned by machine learning, and the unmelted areas and the melted areas in the melt image are learned to obtain a melting identification model capable of identifying the unmelted areas and the melted areas.

In order to train the fusion recognition model, accurate sample data and corresponding label data are required, i.e., a large number of fused material image samples are collected and manually labeled, and each fused material image sample is labeled with an unmelted region and a melted region. The schematic diagram of marking unmelted areas and melted areas as shown in fig. 9, distinguishing melted areas from unmelted areas is mainly based on observation experiences of shop workers, and is marked according to key information such as textures, gray value differences, and the like of images. The smaller closed curve in the figure marks the melted region of the silicon material and the region between the smaller closed curve and the larger closed curve in the figure marks the unmelted region of the silicon material.

The fusion recognition model may be a deep learning semantic segmentation model, and specifically may be any suitable model, which is not limited in this embodiment of the present invention.

The input of the melting identification model is the acquired melting image, and after each melting image is acquired, the melting identification model is input. The model outputs images of unmelted and melted regions, e.g., in the left-hand semantic segmentation image of fig. 5, light is melted region and dark is unmelted region.

Training process of model: acquiring a molten material image sample, and a melted region and an unmelted region which correspond to the marks; inputting the melt image sample and the melted region and unmelted region of the corresponding mark into a melt recognition model; and training a melting identification model by adopting a melted region and an unmelted region marked by the melting image sample until the loss value of the melting identification model is smaller than a set loss value, so as to obtain a trained melting identification model.

In the application stage of the model, a melt image with poor recognition result fed back on site can be collected. And manually re-labeling, and adding a training sample to re-train the model to optimize the model. The optimized model is deployed to an industrial personal computer or an inference server again to replace the original model through testing.

It should be noted that, for simplicity of description, the method embodiments are shown as a series of acts, but it should be understood by those skilled in the art that the embodiments are not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred embodiments, and that the acts are not necessarily required by the embodiments of the invention.

Referring to fig. 10, a block diagram of an embodiment of a charging prompt message determining apparatus according to the present invention is shown, which may specifically include the following modules:

an image acquisition module 301 for acquiring a melt image of a Czochralski single crystal apparatus;

a region identification module 302 for identifying a melted region in the melt image;

a circularity computation module 303, configured to compute a circularity of the melted region;

and the prompt information determining module 304 is configured to determine a charging prompt information of the czochralski crystal growing apparatus according to the rate of change of the circularity and a preset charging rule.

Optionally, the prompt information determining module includes:

Optionally, the apparatus further comprises:

Optionally, the area identifying module includes:

For the device embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, and reference is made to the description of the method embodiments for relevant points.

Fig. 11 is a block diagram illustrating an electronic device 400 for charging cue information determination, according to an example embodiment. For example, electronic device 400 may be a mobile phone, computer, digital broadcast terminal, messaging device, game console, tablet device, medical device, exercise device, personal digital assistant, or the like.

Referring to fig. 11, an electronic device 400 may include one or more of the following components: a processing component 402, a memory 404, a power supply component 406, a multimedia component 408, an audio component 410, an input/output (I/O) interface 412, a sensor component 414, and a communication component 416.

The processing component 402 generally controls overall operation of the electronic device 400, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 402 may include one or more processors 420 to execute instructions to perform all or part of the steps of the loading hint information determination method described above. Further, the processing component 402 can include one or more modules that facilitate interaction between the processing component 402 and other components. For example, the processing component 402 may include a multimedia module to facilitate interaction between the multimedia component 408 and the processing component 402.

Memory 404 is configured to store various types of data to support operations at device 400. Examples of such data include instructions for any application or method operating on electronic device 400, contact data, phonebook data, messages, pictures, videos, and the like. The memory 404 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

The power component 404 provides power to the various components of the electronic device 400. Power component 404 can include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for electronic device 400.

The multimedia component 408 includes a screen between the electronic device 400 and the user that provides an output interface. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or slide action, but also the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 408 includes a front camera and/or a rear camera. When the electronic device 400 is in an operational mode, such as a shooting mode or a video mode, the front-facing camera and/or the rear-facing camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

The audio component 410 is configured to output and/or input audio signals. For example, the audio component 410 includes a Microphone (MIC) configured to receive external audio signals when the electronic device 400 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 404 or transmitted via the communication component 416. In some embodiments, audio component 410 further includes a speaker for outputting audio signals.

The I/O interface 412 provides an interface between the processing component 402 and peripheral interface modules, which may be a keyboard, click wheel, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.

The sensor assembly 414 includes one or more sensors for providing status assessment of various aspects of the electronic device 400. For example, the sensor assembly 414 may detect an on/off state of the device 400, a relative positioning of components, such as a display and keypad of the electronic device 400, a change in position of the electronic device 400 or a component of the electronic device 400, the presence or absence of a user's contact with the electronic device 400, an orientation or acceleration/deceleration of the electronic device 400, and a change in temperature of the electronic device 400. The sensor assembly 414 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact. The sensor assembly 414 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 414 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 416 is configured to facilitate communication between the electronic device 400 and other devices, either wired or wireless. The electronic device 400 may access a wireless network based on a communication standard, such as WiFi,2G, or 3G, or a combination thereof. In one exemplary embodiment, the communication part 414 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 414 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the electronic device 400 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements for performing the above-described charging cue information determination methods.

In an exemplary embodiment, a non-transitory computer readable storage medium is also provided, such as memory 404, that includes instructions executable by processor 420 of electronic device 400 to perform the above-described loading tip information determination method. For example, the non-transitory computer readable storage medium may be ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

A non-transitory computer readable storage medium, which when executed by a processor of a terminal, causes the terminal to perform a method of charging cue information determination, the method comprising:

acquiring a melt image of a Czochralski single crystal apparatus;

identifying a melted region in the frit image;

calculating the circularity of the melted region;

Optionally, the method further comprises:

acquiring a melt image of the Czochralski single crystal apparatus;

Identifying unmelted and melted regions in the frit image;

Optionally, the identifying the melted region in the frit image includes:

In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by differences from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.

It will be apparent to those skilled in the art that embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the invention may take the form of a computer program product on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the embodiments of the invention.

Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or terminal device comprising the element.

The above detailed description of a method and apparatus for determining a charging prompt message, an electronic device and a readable storage medium provided by the present invention, the specific examples are applied to illustrate the principles and embodiments of the present invention, and the above examples are only used to help understand the method and core idea of the present invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.

Claims

1. The method for determining the charging prompt information is characterized by comprising the following steps:

acquiring a melt image of a Czochralski single crystal apparatus;

identifying a melted region in the frit image;

calculating the circularity of the melted region;

2. The method of claim 1, wherein the charging cue information comprises a cue information for a charging timing of the czochralski crystal growing apparatus, and wherein determining the charging cue information for the czochralski crystal growing apparatus based on the rate of change of the circularity and a preset charging rule comprises:

3. The method of claim 1, wherein the charging cue information comprises a cue information that increases a priority of charging the czochralski crystal growing apparatus, wherein determining the charging cue information of the czochralski crystal growing apparatus based on the rate of change of the circularity and a preset charging rule comprises:

4. The method of claim 1, wherein the charging prompt message includes a prompt message that a charging mode of the czochralski crystal growing apparatus is a gentle charging mode, and determining the charging prompt message of the czochralski crystal growing apparatus according to the change rate of the circularity and a preset charging rule includes:

5. The method of claim 1, wherein determining the charging cue information of the czochralski crystal growing apparatus based on the rate of change of the circularity and a preset charging rule comprises:

6. The method according to claim 1, wherein the method further comprises:

identifying unmelted and melted regions in the frit image;

7. The method of any of claims 1-6, wherein the identifying melted regions in the frit image comprises:

8. A charging cue information determining apparatus, comprising:

9. The electronic equipment is characterized by comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus;

a memory for storing a computer program;

a processor for carrying out the method steps of any one of claims 1-7 when executing a program stored on a memory.

10. A readable storage medium, characterized in that instructions in the storage medium, when executed by a processor of an electronic device, enable the electronic device to perform the charging cue information determination method according to one or more of the method claims 1-7.