CN117779174A

CN117779174A - Accident early warning method and device, electronic equipment and storage medium

Info

Publication number: CN117779174A
Application number: CN202211191746.6A
Authority: CN
Inventors: 李羊飞; 张伟建; 刘永生; 周宏坤; 赵阳
Original assignee: Longi Green Energy Technology Co Ltd
Current assignee: Longi Green Energy Technology Co Ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2024-03-29

Abstract

The embodiment of the application provides an accident early warning method, an accident early warning device, electronic equipment and a storage medium. The accident early warning method comprises the following steps: during the crystal drawing process, the weight of the crystal is collected according to a preset rule; acquiring the weight variation of the crystal based on the weight of the crystal, and judging whether the weight variation accords with a weight mutation condition which is about to cause a preset type of accident; and triggering early warning information of the preset type of accidents after judging that the weight abrupt change condition is met. In the embodiment of the application, the weight mutation condition which is about to cause the preset type accident is set, the weight variation of the crystal is obtained in the crystal drawing process, whether the preset type accident is about to occur can be determined by judging whether the weight variation of the crystal accords with the weight mutation condition which is about to cause the preset type accident, and then the early warning information of the preset type accident can be triggered before the preset type accident occurs, so that the damage to equipment and personnel is avoided, and the timely damage stopping is realized.

Description

Accident early warning method and device, electronic equipment and storage medium

Technical Field

The present disclosure relates to the field of semiconductor technologies, and in particular, to an accident early warning method, an accident early warning device, an electronic device, and a storage medium.

Background

Monocrystalline silicon is a relatively active nonmetallic element, is an important component of crystalline materials, and is at the front of new material development. The material is mainly used as a semiconductor material, and is used for generating electricity, supplying heat and the like by utilizing solar energy and photovoltaic.

Semiconductor single crystal silicon is typically manufactured by a crystal pulling process. However, during the crystal pulling process, accidents such as rod falling and upper shaft clamping stagnation occur due to equipment reasons, material reasons and the like.

In the prior art, after an accident occurs, field personnel are firstly evacuated in an emergency mode, and then the accident is manually handled, so that the accident handling has large hysteresis, and the personnel, equipment and the like are easily damaged.

Disclosure of Invention

In view of the above problems, embodiments of the present application provide an accident early warning method, apparatus, electronic device, and storage medium, which are capable of detecting whether there is an accident risk before an accident occurs, and triggering early warning of the accident.

According to an aspect of the embodiments of the present application, there is provided an accident pre-warning method, the method including:

during the crystal drawing process, collecting the weight of the crystal according to a preset rule;

acquiring the weight variation of the crystal based on the weight of the crystal, and judging whether the weight variation accords with a weight mutation condition which is about to cause a preset type of accident;

And triggering early warning information of the preset type of accidents after judging that the weight abrupt change condition is met.

Optionally, the preset type of accident includes a rod falling accident, acquiring a weight change amount of the crystal based on the weight of the crystal, and determining whether the weight change amount meets a weight mutation condition that is about to cause the rod falling accident includes:

the following procedure is performed at least once: calculating a first weight change amount of the crystal from a first starting time point corresponding to a current time point to the current time point; judging whether the first weight change amount is smaller than or equal to a first preset threshold value or not; the first starting time point represents a time point which is a first preset duration before the current time point, and the first preset threshold is a negative number;

and when the first weight change amounts are all smaller than or equal to the first preset threshold value, determining that the weight abrupt change conditions which are about to cause the rod falling accident are met.

Optionally, before determining that the weight mutation condition which is about to cause the rod falling accident is met, the method further comprises:

the following procedure is performed at least once: calculating a second weight change of the crystal from the first target time point to the current time point; judging whether the second weight change value is smaller than or equal to a second preset threshold value; the first target time point represents a first starting time point when the first weight change amount is judged to be greater than or equal to a first preset threshold value for the first time, the second preset threshold value is a negative number, and the second preset threshold value is greater than the first preset threshold value;

And when the second weight change amounts are smaller than or equal to the second preset threshold value, determining that the weight abrupt change conditions which are about to cause the rod falling accident are met.

Optionally, the preset type of accident includes an upper shaft stuck accident, the weight change amount of the crystal is obtained based on the weight of the crystal, and the judging whether the weight change amount meets the weight mutation condition which is about to cause the upper shaft stuck accident includes:

judging the current crystal rising type; the crystal growth type comprises a first crystal growth and a second crystal growth, and the first crystal growth is slower than the second crystal growth;

and acquiring the weight change quantity of the crystal based on the weight of the crystal according to the crystal lifting type, and judging whether the weight change quantity meets the weight mutation condition which is about to cause the upper shaft clamping stagnation accident.

Optionally, in the case that the crystal growth type is the first crystal growth type, acquiring a weight variation of the crystal based on the weight of the crystal, and determining whether the weight variation meets a weight mutation condition that is about to cause an upper shaft clamping accident includes:

the following procedure is performed at least once: calculating a third change in the amount of change of the crystal from a third start time point corresponding to the current time point; judging whether the third weight change amount is larger than or equal to a third preset threshold value or not; the third starting time point represents a time point which is a second preset duration before the current time point;

And when the third weight change amounts are all larger than or equal to the third preset threshold value, determining that the weight abrupt change conditions which are about to cause the upper shaft clamping accident are met.

Optionally, before determining that the weight mutation condition that is about to cause the upper shaft clamping stagnation accident is met, the method further comprises:

the following procedure is performed at least once: calculating a third change in the amount of change of the crystal from a third start time point corresponding to the current time point; judging whether the third weight change amount is larger than or equal to a fourth preset threshold value; the fourth preset threshold value is larger than the third preset threshold value;

when the third weight change amounts are all larger than or equal to the fourth preset threshold value, determining weight mutation conditions which are about to cause upper shaft clamping accidents;

and/or the number of the groups of groups,

the following procedure is performed at least once: calculating a fourth weight change amount of the crystal from the second target time point to the current time point; judging whether the fourth weight change amount is larger than or equal to a fifth preset threshold value; the second target time point represents a third starting time point when the third weight change amount is judged to be more than or equal to a third preset threshold value for the first time, and the fifth preset threshold value is more than the third preset threshold value;

And when the fourth weight change amounts are all larger than or equal to the fifth preset threshold value, determining that the weight abrupt change conditions which are about to cause the upper shaft clamping accident are met.

Optionally, in the case that the crystal growth type is the second crystal growth type, acquiring a weight variation of the crystal based on the weight of the crystal, and determining whether the weight variation meets a weight mutation condition that is about to cause an upper shaft clamping accident includes:

the following procedure is performed at least once: calculating a fifth weight change of the crystal from a fifth starting time point corresponding to the current time point; judging whether the fifth weight change amount is larger than or equal to a sixth preset threshold value; the fifth starting time point represents a time point which is a third preset time period before the current time point, the sixth preset threshold value is larger than the third preset threshold value, and the third preset time period is smaller than the second preset time period;

and when the fifth weight change amount is larger than or equal to the sixth preset threshold value, determining that the weight abrupt change condition which is about to cause the upper shaft clamping accident is met.

Optionally, determining the current crystal growth type includes:

when the current link is a seeding link, a shouldering link or an equal-diameter growth link, determining that the current crystal rising type is the first crystal rising type;

And when the current link is a pull-out furnace link, determining that the current crystal rising type is the second crystal rising type.

Optionally, the method further comprises: triggering the prevention and treatment of the preset type of accidents.

Optionally, the preset type of accident comprises a bar dropping accident; triggering the prevention and treatment of the rod drop accident, wherein the prevention and treatment comprises at least one of the following steps: the crystal rotation mechanism is controlled to stop crystal rotation, and the crystal lifting mechanism is controlled to improve the crystal lifting speed; the crucible rotation mechanism is controlled to stop the rotation of the crucible, and the crucible lifting mechanism is controlled to reduce the crucible lifting speed; controlling the heat exchanger to stop ascending; controlling the heater to stop heating; and controlling the feeder to stop feeding.

Optionally, the preset type of accident includes an upper shaft stuck accident; triggering the prevention and treatment of the upper shaft clamping stagnation accident, wherein the prevention and treatment comprises at least one of the following steps: controlling the crystal lifting mechanism to stop crystal lifting; and controlling the crystal rotating mechanism to stop crystal rotation.

According to another aspect of embodiments of the present application, there is provided an accident pre-warning apparatus, the apparatus including:

the acquisition module is used for acquiring the weight of the crystal according to a preset rule in the crystal drawing process;

the judging module is used for acquiring the weight variation of the crystal based on the weight of the crystal and judging whether the weight variation accords with a weight mutation condition which is about to cause a preset type of accident;

And the early warning module is used for triggering early warning information of the preset type of accidents after judging that the weight mutation condition is met.

Optionally, the preset type of accident includes a bar dropping accident, and the judging module includes:

a first judging unit for executing at least one of the following processes: calculating a first weight change amount of the crystal from a first starting time point corresponding to a current time point to the current time point; judging whether the first weight change amount is smaller than or equal to a first preset threshold value or not; the first starting time point represents a time point which is a first preset duration before the current time point, and the first preset threshold is a negative number;

and the first determining unit is used for determining that the weight abrupt change condition which is about to cause the rod falling accident is met when the first weight change amounts are smaller than or equal to the first preset threshold value.

Optionally, the judging module further includes:

a second judging unit for executing at least one of the following processes: calculating a second weight change of the crystal from the first target time point to the current time point; judging whether the second weight change value is smaller than or equal to a second preset threshold value; the first target time point represents a first starting time point when the first weight change amount is judged to be greater than or equal to a first preset threshold value for the first time, the second preset threshold value is a negative number, and the second preset threshold value is greater than the first preset threshold value;

And the second determining unit is used for determining that the weight abrupt change condition which is about to cause the rod falling accident is met when the second weight change amounts are smaller than or equal to the second preset threshold value.

Optionally, the preset type of accident includes an upper shaft stuck accident, and the judging module includes:

the third judging unit is used for judging the current crystal rising type; the crystal growth type comprises a first crystal growth and a second crystal growth, and the first crystal growth is slower than the second crystal growth;

and a fourth judging unit, configured to obtain a weight variation of the crystal based on the weight of the crystal according to the crystal lifting type, and judge whether the weight variation meets a weight mutation condition that is about to cause an upper shaft clamping stagnation accident.

Optionally, the fourth judging unit includes:

the first judging subunit is configured to execute, when the crystal-lifting type is a first crystal-lifting type, at least one of the following procedures: calculating a third change in the amount of change of the crystal from a third start time point corresponding to the current time point; judging whether the third weight change amount is larger than or equal to a third preset threshold value or not; the third starting time point represents a time point which is a second preset duration before the current time point;

And the first determination subunit is used for determining that the weight abrupt change condition which is about to cause the upper shaft clamping stagnation accident is met when the third weight change amounts are all larger than or equal to the third preset threshold value.

Optionally, the fourth judging unit further includes:

a second judging subunit, configured to perform at least one of the following procedures: calculating a third change in the amount of change of the crystal from a third start time point corresponding to the current time point; judging whether the third weight change amount is larger than or equal to a fourth preset threshold value; the fourth preset threshold value is larger than the third preset threshold value;

the second determining subunit is used for determining that the weight abrupt change condition which is about to cause the upper shaft clamping stagnation accident is met when the third weight change amount is larger than or equal to the fourth preset threshold value;

and/or the number of the groups of groups,

a third judging subunit, configured to perform at least one of the following procedures: calculating a fourth weight change amount of the crystal from the second target time point to the current time point; judging whether the fourth weight change amount is larger than or equal to a fifth preset threshold value; the second target time point represents a third starting time point when the third weight change amount is judged to be more than or equal to a third preset threshold value for the first time, and the fifth preset threshold value is more than the third preset threshold value;

And the third determination subunit is used for determining that the weight abrupt change condition which is about to cause the upper shaft clamping stagnation accident is met when the fourth weight change amount is larger than or equal to the fifth preset threshold value.

Optionally, the fourth judging unit includes:

a fourth judging subunit, configured to execute, when the crystal-up type is the second crystal-up type, at least one of the following procedures: calculating a fifth weight change of the crystal from a fifth starting time point corresponding to the current time point; judging whether the fifth weight change amount is larger than or equal to a sixth preset threshold value; the fifth starting time point represents a time point which is a third preset time period before the current time point, the sixth preset threshold value is larger than the third preset threshold value, and the third preset time period is smaller than the second preset time period;

and the fourth determination subunit is used for determining that the weight abrupt change condition which is about to cause the upper shaft clamping stagnation accident is met when the fifth weight change amount is larger than or equal to the sixth preset threshold value.

Optionally, the third judging unit is specifically configured to determine that the current crystal growth type is the first crystal growth type when the current link is a seeding link, a shouldering link, or an equal-diameter growth link; and when the current link is a pull-out furnace link, determining that the current crystal rising type is the second crystal rising type.

Optionally, the apparatus further comprises: and the processing module is used for triggering the prevention and the processing of the preset type of accidents.

Optionally, the preset type of accident comprises a bar dropping accident; and the processing module specifically executes at least one of the following when triggering the prevention and treatment of the rod falling accident: the crystal rotation mechanism is controlled to stop crystal rotation, and the crystal lifting mechanism is controlled to improve the crystal lifting speed; the crucible rotation mechanism is controlled to stop the rotation of the crucible, and the crucible lifting mechanism is controlled to reduce the crucible lifting speed; controlling the heat exchanger to stop ascending; controlling the heater to stop heating; and controlling the feeder to stop feeding.

Optionally, the preset type of accident includes an upper shaft stuck accident; and the processing module specifically executes at least one of the following when triggering the prevention and the processing of the upper shaft clamping stagnation accident: controlling the crystal lifting mechanism to stop crystal lifting; and controlling the crystal rotating mechanism to stop crystal rotation.

According to another aspect of embodiments of the present application, there is provided an electronic device including: one or more processors; and one or more computer-readable storage media having instructions stored thereon; the instructions, when executed by the one or more processors, cause the processors to perform the incident early warning method of any one of the above.

According to another aspect of embodiments of the present application, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, causes the processor to perform the accident pre-warning method as defined in any one of the above.

In the embodiment of the application, considering that the weight mutation of the crystal can cause accidents in the crystal pulling process, the weight mutation condition which is about to cause the preset type of accidents can be set, the weight variation of the crystal can be obtained in the crystal pulling process, whether the preset type of accidents are about to occur can be determined by judging whether the weight variation of the crystal accords with the weight mutation condition which is about to cause the preset type of accidents or not, and then the early warning information of the preset type of accidents can be triggered before the preset type of accidents occur, so that the damage to equipment and personnel is avoided, and the timely damage stopping is realized.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments of the present application will be briefly described below, and it is obvious that the drawings in the following description are only some drawings of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a single crystal furnace structure according to an embodiment of the present application.

Fig. 2 is a flowchart illustrating steps of an accident pre-warning method according to an embodiment of the present application.

Fig. 3 is a flowchart of a method for early warning of a rod drop accident according to an embodiment of the present application.

Fig. 4 is a flowchart of another method for early warning of a rod drop accident according to an embodiment of the present application.

Fig. 5 is a flowchart of an upper shaft clamping stagnation accident early warning method according to an embodiment of the present application.

Fig. 6 is a flowchart of another method for early warning of a stuck upper shaft accident according to an embodiment of the present application.

Fig. 7 is a block diagram of an accident warning apparatus according to an embodiment of the present application.

Fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

The technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some of the embodiments of the present application, not all the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The embodiment of the application is applied to a scene of early warning of an impending accident in the process of pulling a crystal by adopting a crystal pulling method. Illustratively, the crystal pulling method may include, but is not limited to: CZ (CZ) method, RCZ (multiple charge pull) method, CCZ (continuous pull) method, etc.

In the pulling method for pulling single crystal silicon, crystal pulling is generally performed by a single crystal furnace.

Referring to fig. 1, a schematic diagram of a single crystal furnace structure according to an embodiment of the present application is shown.

As shown in fig. 1, the single crystal furnace includes a crystal lifting mechanism 101 (for crystal lifting), a weighing mechanism 102 (for crystal weighing), a crystal turning mechanism 103 (for crystal rotation), a crystal stroke mechanism 104 (for recording crystal stroke), a liquid level temperature measuring mechanism 105 (for liquid level temperature measurement), a sub-chamber observation window 106, a sub-chamber furnace drum 107 (for isolated use of crystal bars, barrels, etc.), a sub-chamber rotating mechanism 108 (for sub-chamber rotation), a sub-chamber lifting mechanism 109 (for sub-chamber lifting), a column cabinet 110 (for wiring and control of each part of a furnace body), a main chamber lifting claw 111 (for holding a main furnace drum), a column 112 (for supporting a furnace body), an isolation valve 113 (for isolating a sub-chamber from a main chamber), a heat shield lifting mechanism 114 (for heat shield and heat exchanger lifting), a furnace lid 115, a side observation window 116, a front observation window 117, a main chamber furnace drum 118, and a lower furnace drum 119. Among them, a crucible (for holding raw materials), a heater (for heating raw materials), a heat exchanger (for heat exchange), a feeder (for adding raw materials), and the like are also provided in the main chamber cartridge 118.

In the crystal drawing process, firstly, putting a polycrystalline silicon raw material into a crucible, heating to a molten state by a heater to generate a molten silicon liquid level, suspending a single crystal silicon seed crystal manufactured by chemical etching above the molten silicon liquid level by a tungsten wire rope, and lowering the seed crystal to be in contact with the molten silicon liquid level, wherein when the temperature is proper, the seed crystal and the melt reach thermal equilibrium, and the molten silicon liquid level is adsorbed below the seed crystal under the support of surface tension; the seed crystal rotates and slowly lifts upwards, and the adsorption melt moves upwards along with the rotation, so that a supercooled state is formed, and silicon atoms with the supercooled state form regular crystals on a solid-liquid interface along the arrangement structure of the seed crystal. The lower end of the seed crystal is sequentially provided with a seeding step, a shouldering step, an equal-diameter growth step and a pulling furnace step (namely a tail-end step), if the whole growth environment is stable, the seed crystal can be crystallized on the crystal formed before repeatedly, and finally a cylindrical monocrystalline silicon rod is formed. The crystal pulling step, the shoulder step and the constant diameter growth step are performed in the main chamber furnace 118, and the crystal is pulled from the main chamber furnace 118 to the auxiliary chamber furnace 107 in the pulling step, and finally separated from the main chamber furnace 118.

During the crystal drawing process, accidents such as rod falling, upper shaft clamping stagnation and the like can occur due to equipment reasons, material reasons and the like. For example, rod dropping accidents can occur due to seed crystal oxidation, furnace table crystallization, broken tungsten wire rope, collision of crystal rods and the like; due to friction between the tungsten wire rope and the crystal, the upper shaft clamping accident can be caused. These accidents can cause a degree of loss such as thermal field damage, furnace equipment damage, explosions, etc. Aiming at the problems, the embodiment of the application provides an accident pre-warning method which can trigger pre-warning information of an accident before the accident occurs, thereby reminding staff to process in time. Next, an accident warning method will be described in detail.

Referring to fig. 2, a flowchart illustrating steps of an accident pre-warning method according to an embodiment of the present application is shown.

As shown in fig. 2, the accident pre-warning method may include the steps of:

step 201, collecting the weight of the crystal according to a preset rule in the crystal pulling process.

During the crystal pulling process, the weight of the crystal is normally increased because the crystal is growing continuously. However, if accidents such as bar falling and upper shaft clamping stagnation occur, the weight of the crystal is suddenly changed, namely, the accident can be caused by the sudden change of the weight of the crystal, so that whether the accident is about to occur or not can be measured according to the weight change of the crystal.

Firstly, in the crystal pulling process, the weight of the crystal is collected according to a preset rule.

Illustratively, the preset rule may be a timed acquisition, a real-time acquisition, or the like.

For timing acquisition, the time interval of acquisition may be set according to practical experience, which is not limited in this embodiment. For example, the weight of the crystals collected once per second may be set, and so on.

Step 202, acquiring the weight variation of the crystal based on the weight of the crystal, and judging whether the weight variation accords with a weight mutation condition which is about to cause a preset type of accident.

By way of example, the preset type of incident may include, but is not limited to, a stick-off incident, an upper shaft stuck incident, and the like.

The weight change amount of the crystal can represent the weight change degree of the crystal, so that whether the weight change amount of the crystal meets the weight mutation condition which is about to cause the preset type of accident can be judged based on the weight change amount of the crystal.

The weight mutation condition which is about to cause the accident of the type is different for different accidents, and the weight mutation condition which is about to cause the accident of the preset type can be set according to practical experience. In particular, the following examples will be described in detail.

For example, the weight abrupt change condition that is about to cause a preset type of accident may be set such that the amount of weight change in a certain period exceeds a certain threshold value, or the like. Wherein the specific duration and the specific threshold can be derived from actual experience by analyzing historical data of the type of incident.

And 203, triggering early warning information of the preset type of accidents after judging that the weight abrupt change condition is met.

Aiming at a certain preset type accident, triggering early warning information of the preset type accident after judging that the weight change quantity of the crystal meets the weight mutation condition of the preset type accident.

Illustratively, the pre-warning information may include, but is not limited to: the popup window displays early warning information, sound alarm, light alarm and the like.

The pre-warning method for the rod falling accident and the upper shaft clamping stagnation accident is described below.

Rod drop accidents generally occur in the pull-out furnace link.

Referring to fig. 3, a flowchart of a stick-drop accident early warning method according to an embodiment of the present application is shown.

As shown in fig. 3, the bar drop accident pre-warning method may include the following steps:

step 301, collecting the weight of the crystal according to a preset rule.

Step 302, calculating a first weight change amount of the crystal from a first starting time point corresponding to the current time point.

The first starting time point corresponding to the current time point represents a time point which is a first preset duration away from the current time point before the current time point. For example, if the first preset duration is 10s and the current time point is 10:30:50, the first starting time point corresponding to the current time point is 10:30:40; if the current time point is 10:31:00, the first starting time point corresponding to the current time point is 10:30:50.

The specific value of the first preset duration may be set according to practical experience, which is not limited in this embodiment. For example, the setting may be made according to how long the crystals will generally undergo weight mutation in the event of actual rod drop.

The first weight change amount of the crystal from the first starting time point corresponding to the current time point may be a difference obtained by subtracting the weight of the crystal from the weight of the crystal at the current time point. For example, the weight of the crystal at the current time point is 200kg, and the weight of the crystal at the first starting time point corresponding to the current time point is 300kg, and then the first weight change amount of the crystal from the first starting time point corresponding to the current time point is 200-300= -100kg.

Step 303, determining whether the first weight variation is less than or equal to a first preset threshold. If yes, go to step 304; if not, return to step 302.

Since the weight change of the crystal is reduced in the event of a rod-off accident, the first weight change amount of the crystal should be negative in the event of a rod-off accident, and thus the first preset threshold value should be negative.

The specific value of the first preset threshold may be set according to practical experience, which is not limited in this embodiment. For example, the crystal weight may be set according to a weight change amount of the crystal in an actual falling accident.

Step 304, determining whether the first weight variation is smaller than or equal to a first preset threshold value after the first preset number of times is met. If yes, go to step 305; if not, return to step 302.

After the first determination that the first weight variation is less than or equal to the first preset threshold, the method may further determine whether the first weight variation is less than or equal to the first preset threshold within the first delay time, that is, continuously determine the first preset times. If the continuous first preset times meet the condition that the first weight change amount is smaller than or equal to a first preset threshold value, determining that the weight abrupt change condition which is about to cause the rod falling accident is met; if the first preset number of times has not been reached, execution returns to step 302.

And 305, determining weight mutation conditions which are about to cause the rod falling accident, and triggering early warning information of the rod falling accident.

In summary, a process of obtaining a weight change amount of the crystal based on a weight of the crystal, and determining whether the weight change amount meets a weight abrupt change condition that is about to cause a rod drop accident, includes:

the following procedure is performed at least once: calculating a first weight change amount of the crystal from a first starting time point corresponding to a current time point to the current time point; judging whether the first weight change amount is smaller than or equal to a first preset threshold value or not; the first starting time point represents a time point which is a first preset duration before the current time point, and the first preset threshold is a negative number; when the first weight change amounts are all smaller than or equal to the first preset threshold value, determining that weight abrupt change conditions which are about to cause rod falling accidents are met; and returning to the step of executing the following process at least once when the first weight change amount is larger than the first preset threshold value.

Referring to fig. 4, a flowchart of another method for early warning of a stick-drop accident according to an embodiment of the present application is shown.

As shown in fig. 4, the bar drop accident pre-warning method may include the steps of:

step 401, collecting the weight of the crystal according to a preset rule.

Step 402, calculating a first weight change amount of the crystal from a first starting time point corresponding to the current time point.

Step 403, determining whether the first weight variation is less than or equal to a first preset threshold. If yes, go to step 404; if not, return to step 402.

Step 404, determining whether the first weight change amount is less than or equal to a first preset threshold value after the first preset number of times has been continuously satisfied. If yes, go to step 405; if not, return to step 402.

Step 405, triggering a secondary judgment.

Step 406, calculating a second weight change amount of the crystal from the first target time point to the current time point.

When the first weight change amount is determined to be equal to or larger than the first preset threshold value for the first time, it is considered that the falling of the rod may occur from the first starting time point corresponding to the moment, so that the crystal weight at the first starting time point corresponding to the moment can be temporarily stored, and the weight change amount of the continuous falling rod from the first starting time point is further determined in the second determination. When the weight change quantity of the continuous falling rod is judged to be in accordance with the weight mutation condition which is about to cause the falling rod accident, the early warning information of the falling rod accident is triggered again, so that the misjudgment of the first weight change quantity caused by the error of the crystal weighing mechanism is avoided.

Therefore, the first target time point represents a first starting time point when the first weight change amount is determined to be equal to or larger than the first preset threshold value for the first time. For example, when the first weight change amount is determined to be greater than or equal to the first preset threshold for the first time, the time point is determined to be 10:30:50, when the first weight change amount is determined to be greater than or equal to the first preset threshold for the first time, the first starting time point is determined to be 10:30:40, and when the first weight change amount is determined to be greater than or equal to the first preset threshold for the first time, the first target time point is determined to be 10:30:40.

The second weight change of the crystal from the first target time point to the current time point may be a difference obtained by subtracting the weight of the crystal at the first target time point from the weight of the crystal at the current time point.

Step 407, determining whether the second weight change amount is less than or equal to a second preset threshold. If yes, go to step 409; if not, go to step 408.

The second preset threshold is negative.

Since the weight change of the crystal is unstable when the accident of falling the rod is about to occur, the weight of the crystal is not continuously and steadily reduced, the weight of the crystal detected in the next second is possibly larger than that detected in the previous second, and the possible large amplitude is high, even the detected weight change is possibly caused to be more unstable due to the error of the crystal weighing mechanism, a second preset threshold value larger than the first preset threshold value can be set for the second weight change, and when the second weight change is smaller than the second preset threshold value larger than the second weight change, the situation that the rod is fallen is indeed about to occur can be considered, so that the unstable weight change is balanced.

The specific value of the second preset threshold may be set according to actual experience, which is not limited in this embodiment.

Step 408, the second determination is exited, and step 402 is returned.

Step 409, determining whether the second weight change amount is less than or equal to a second preset threshold value after the second preset number of times has been continuously satisfied. If yes, go to step 410; if not, return to step 407.

After the first judgment that the second weight variation is less than or equal to the second preset threshold, the second time delay time can be set to continuously judge whether the second weight variation is less than or equal to the second preset threshold, namely continuously judge the second preset times. If the continuous second preset times meet the condition that the second weight change amount is smaller than or equal to a second preset threshold value, determining that the weight abrupt change condition which is about to cause the rod falling accident is met; if the second preset number of times has not been reached, execution returns to step 407.

Step 410, determining that the weight abrupt change condition which is about to cause the rod falling accident is met, and triggering the early warning information of the rod falling accident.

when the first weight change amounts are all smaller than or equal to the first preset threshold value, executing at least one of the following processes: calculating a second weight change of the crystal from a second start time point corresponding to the current time point; judging whether the second weight change value is smaller than or equal to a second preset threshold value; the second starting time point represents a time point which is a first target time length before the current time point, the first target time length represents a first starting time point when the first weight change amount is judged to be more than or equal to a first preset threshold value for the first time, and a difference value between the first starting time point and the current time point when the second weight change amount is calculated for the first time, the second preset threshold value is a negative number, and the second preset threshold value is larger than the first preset threshold value; and when the second weight change amounts are smaller than or equal to the second preset threshold value, determining that the weight abrupt change conditions which are about to cause the rod falling accident are met.

In this embodiment, the secondary judgment is added to the mode shown in fig. 2, so that the problem of misjudgment in the mode shown in fig. 2 can be solved, and misjudgment caused by errors of the crystal weighing mechanism is avoided.

Referring to fig. 5, a flowchart of an upper shaft clamping stagnation accident early warning method according to an embodiment of the present application is shown.

As shown in fig. 5, the upper shaft stuck accident pre-warning method may include the steps of:

step 501, collecting the weight of the crystal according to a preset rule.

Step 502, determining the current crystal growth type. When the current crystal growth type is the first crystal growth, step 503 is executed; when the current crystal growth type is the second crystal growth, step 506 is performed.

The upper shaft clamping accident can occur in the seeding step, the shoulder placing step, the constant diameter growth step and the furnace lifting step.

The crystal lifting (crystal lifting refers to crystal lifting speed) of the seeding link, the shoulder placing link and the constant diameter growth link is slower, and the crystal lifting of the lifting furnace link is faster, so that two crystal lifting types of a first crystal lifting type and a second crystal lifting type can be divided, then according to the crystal lifting type, the weight change quantity of the crystal is obtained based on the weight of the crystal, and whether the weight change quantity meets the weight mutation condition which is about to cause an upper shaft clamping stagnation accident or not is judged.

Specifically, the crystal rising type of the seeding link, the shoulder placing link and the constant diameter growth link is used as a first crystal rising type, the crystal rising type of the pulling-out furnace link is used as a second crystal rising type, and the first crystal rising is slower than the second crystal rising type. Thus, determining the current crystal growth type includes: when the current link is a seeding link, a shouldering link or an equal-diameter growth link, determining that the current crystal rising type is the first crystal rising type; and when the current link is a pull-out furnace link, determining that the current crystal rising type is the second crystal rising type.

Step 503, calculating a third weight change amount of the crystal from a third starting time point corresponding to the current time point.

The third starting time point corresponding to the current time point represents a time point which is a second preset duration away from the current time point before the current time point. For example, if the second preset duration is 20s and the current time point is 10:30:50, the third starting time point corresponding to the current time point is 10:30:30; if the current time point is 10:31:00, the third starting time point corresponding to the current time point is 10:30:40.

The specific value of the second preset duration may be set according to actual experience, which is not limited in this embodiment. For example, the crystal can be set according to how long the crystal will have weight mutation in the upper shaft clamping stagnation accident of the actual seeding link, the shoulder placing link and the constant diameter growth link.

The third change amount of the crystal from the third start time point corresponding to the current time point may be a difference obtained by subtracting the weight of the crystal at the third start time point corresponding to the current time point from the weight of the crystal at the current time point. For example, if the weight of the crystal at the current time point is 60kg and the weight of the crystal at the third start time point corresponding to the current time point is 50kg, the third variation of the crystal from the third start time point corresponding to the current time point is 60-50=10 kg.

Step 504, determining whether the third weight variation is greater than or equal to a third preset threshold. If yes, go to step 505; if not, return to step 503.

Since the weight change of the crystal is increased at the time of the impending upper shaft clamping failure, the third weight change amount of the crystal should be a positive number at the time of the impending upper shaft clamping failure, and thus the third preset threshold value should be a positive number.

The specific value of the third preset threshold may be set according to actual experience, which is not limited in this embodiment. For example, the common weight change of the crystal can be set according to the upper shaft clamping stagnation accident of the actual seeding link, the shoulder placing link and the constant diameter growth link.

Step 505, determining whether the third preset number of times has been continuously satisfied with the third weight variation being greater than or equal to a third preset threshold. If yes, go to step 509; if not, return to step 503.

After the first judgment that the third weight variation is greater than or equal to the third preset threshold, the method can set to continuously judge whether the third weight variation is greater than or equal to the third preset threshold within the third delay time, namely continuously judge the third preset times. If the continuous third preset times meet the condition that the third weight change amount is larger than or equal to a third preset threshold value, determining that the weight mutation condition which is about to cause the upper shaft clamping stagnation accident is met; if the third preset number of times has not been reached, execution returns to step 503.

Step 506, calculating a fifth weight change amount of the crystal from a fifth starting time point corresponding to the current time point.

The fifth starting time point corresponding to the current time point represents a time point which is a third preset duration from the current time point before the current time point. The second crystal growth is faster than the first crystal growth, so that the weight change amount needs to be judged more quickly, and the third preset time period is smaller than the second preset time period. For example, the second preset duration may be 20s, the third preset duration may be 2s, and so on.

The specific value of the third preset duration may be set according to actual experience, which is not limited in this embodiment. For example, the crystals can be set according to how long they will generally undergo weight mutation in the event of a stuck upper shaft in the actual pull-out furnace link.

The fifth weight change of the crystal from the fifth start time point corresponding to the current time point may be a difference obtained by subtracting the weight of the crystal at the fifth start time point corresponding to the current time point from the weight of the crystal at the current time point.

Step 507, determining whether the fifth weight variation is greater than or equal to a sixth preset threshold. If yes, go to step 508; if not, return to step 506.

The second crystal growth is faster than the first crystal growth, so that the weight change of the crystals under the second crystal growth is faster than the weight change of the crystals under the first crystal growth, and therefore the sixth preset threshold is larger than the third preset threshold and is positive. For example, the third preset threshold may be 20kg, the sixth preset threshold may be 100kg, and so on.

The specific value of the sixth preset threshold may be set according to actual experience, which is not limited in this embodiment. For example, the weight change of the crystal can be set according to the common weight change of the crystal in the upper shaft clamping accident of the actual pulling-out furnace link.

Step 508, determining whether the fourth preset number of times has been continued to satisfy the fifth weight change amount being greater than or equal to the sixth preset threshold. If yes, go to step 509; if not, return to step 506.

After the first judgment that the fifth weight change amount is greater than or equal to the sixth preset threshold value, the method can set to continuously judge whether the fifth weight change amount is greater than or equal to the sixth preset threshold value within the fourth delay time, namely continuously judge the fourth preset times. If the fourth preset times continuously meet the condition that the fifth weight change is greater than or equal to a sixth preset threshold value, determining that the weight mutation condition which is about to cause the upper shaft clamping stagnation accident is met; if the fourth preset number of times has not been reached, execution returns to step 506.

It can be understood that, since the second crystal rising speed is faster than the first crystal rising speed, the upper shaft clamping speed is faster in the case of the second crystal rising, so that it is not necessary to continuously determine too many times, and the fourth preset times are smaller than the third preset times. For example, the fourth preset number of times may be 1 time, 2 times, and so on.

And 509, determining weight mutation conditions which are about to cause the upper shaft clamping accident, and triggering early warning information of the rod falling accident.

In summary, when the crystal growth type is a first crystal growth type, acquiring a weight change amount of the crystal based on the weight of the crystal, and determining whether the weight change amount meets a weight mutation condition that is about to cause an upper shaft clamping accident includes:

the following procedure is performed at least once: calculating a third change in the amount of change of the crystal from a third start time point corresponding to the current time point; judging whether the third weight change amount is larger than or equal to a third preset threshold value or not; the third starting time point represents a time point which is a second preset duration before the current time point; and when the third weight change amounts are all larger than or equal to the third preset threshold value, determining that the weight abrupt change conditions which are about to cause the upper shaft clamping accident are met.

Under the condition that the crystal growth type is the second crystal growth type, acquiring the weight change amount of the crystal based on the weight of the crystal, and judging whether the weight change amount meets the weight mutation condition which is about to cause the upper shaft clamping stagnation accident or not comprises the following steps:

the following procedure is performed at least once: calculating a fifth weight change of the crystal from a fifth starting time point corresponding to the current time point; judging whether the fifth weight change amount is larger than or equal to a sixth preset threshold value; the fifth starting time point represents a time point which is a third preset time period before the current time point, the sixth preset threshold value is larger than the third preset threshold value, and the third preset time period is smaller than the second preset time period; and when the fifth weight change amount is larger than or equal to the sixth preset threshold value, determining that the weight abrupt change condition which is about to cause the upper shaft clamping accident is met.

Referring to fig. 6, a flowchart of another method for early warning of a stuck upper shaft accident according to an embodiment of the present application is shown.

As shown in fig. 6, the upper shaft stuck accident pre-warning method may include the steps of:

and 601, collecting the weight of the crystal according to a preset rule.

Step 602, determining the current crystal growth type. When the current crystal growth type is the first crystal growth type, step 603 is executed; when the current crystal growth type is the second crystal growth, step 614 is performed.

Step 603, calculating a third weight change amount of the crystal from a third starting time point corresponding to the current time point.

Step 604, determining whether the third weight variation is greater than or equal to a third preset threshold. If yes, go to step 605; if not, return to step 603.

Step 605, determining whether the third weight variation is greater than or equal to a third preset threshold value. If yes, go to step 606; if not, return to step 603.

Step 606, triggering a secondary judgment. Step 607 and/or step 610 is then performed.

Step 607, calculating a third amount of change in the crystal from a third start time point corresponding to the current time point.

Step 608, determining whether the third weight variation is greater than or equal to a fourth preset threshold. If yes, go to step 609; if not, go to step 613.

In the secondary judgment process, the fourth preset threshold value is larger than the third preset threshold value, and the fourth preset threshold value is a positive number. By setting a larger threshold value, misjudgment in the judgment can be prevented, and the judgment accuracy is further improved. For example, the third preset threshold may be 30kgs, the fourth preset threshold may be 50kg, and so on.

Step 609, determining whether the fifth preset number of consecutive times satisfies the third variable of the fourth preset threshold or more. If yes, go to step 617; if not, return to step 607.

In the secondary judgment process, after the third weight variation is judged to be greater than or equal to the fourth preset threshold value for the first time, the step of continuously judging whether the third weight variation is greater than or equal to the fourth preset threshold value or not within the fifth delay time length can be set, namely, continuously judging the fifth preset times. If the fifth preset times continuously meet the condition that the third variable quantity of the weight change is larger than or equal to a fourth preset threshold value, determining that the weight change condition is met, wherein the weight change condition is about to cause the upper shaft clamping stagnation accident; if the fifth preset number of times has not been reached, execution returns to step 607.

The above steps 609 to 609 may be summarized as performing at least one of the following processes: calculating a third change in the amount of change of the crystal from a third start time point corresponding to the current time point; judging whether the third weight change amount is larger than or equal to a fourth preset threshold value; the fourth preset threshold value is larger than the third preset threshold value; and when the third weight change amounts are all larger than or equal to the fourth preset threshold value, determining that the weight abrupt change conditions which are about to cause the upper shaft clamping accident are met.

Step 610, calculating a fourth weight change amount of the crystal from the second target time point to the current time point.

When the first judgment is made that the third weight change amount is equal to or larger than the third preset threshold value, it is considered that the upper axis clamping stagnation may occur from the corresponding third starting time point, so that the crystal weight at the corresponding third starting time point can be temporarily stored, and the weight change amount of the continuous clamping stagnation from the third starting time point is further judged in the second judgment. When the weight change quantity of the continuous clamping stagnation is judged to be in accordance with the weight mutation condition which is about to cause the upper shaft clamping stagnation accident, the early warning information of the upper shaft clamping stagnation accident is triggered, so that the misjudgment of the third weight change quantity caused by the error of the crystal weighing mechanism is avoided.

The second target time point represents a third starting time point when the third weight change amount is judged to be greater than or equal to a third preset threshold value for the first time. For example, when the first time determines that the time point when the third weight variation is greater than or equal to the third preset threshold is 10:30:50, the first time determines that the third starting time point when the third weight variation is greater than or equal to the third preset threshold is 10:30:25, and the second target time point is 10:30:25.

The fourth weight change amount of the crystal from the second target time point to the current time point may be a difference obtained by subtracting the weight of the crystal at the second target time point from the weight of the crystal at the current time point.

In step 611, it is determined whether the fourth weight change amount is greater than or equal to a fifth preset threshold. If yes, go to step 612; if not, go to step 613.

Since the fourth variable crossing period is longer than the third variable crossing period, the fifth preset threshold is greater than the third preset threshold, and the fifth preset threshold is a positive number. The specific value of the fifth preset threshold may be set according to actual experience, which is not limited in this embodiment.

Step 612, determining whether the sixth preset number of times satisfies the fourth weight variation amount being greater than or equal to the fifth preset threshold. If yes, go to step 617; if not, return to step 610.

The above steps 610-612 may be summarized as performing at least one of the following processes: calculating a fourth weight change of the crystal from a fourth starting time point corresponding to the current time point; judging whether the fourth weight change amount is larger than or equal to a fifth preset threshold value; the fourth starting time point represents a time point which is before the current time point and is separated from a second target time length, the second target time length represents a third starting time point when the third weight change amount is judged to be more than or equal to a third preset threshold value for the first time, and a difference value between the third starting time point and the current time point when the fourth weight change amount is calculated for the first time is larger than the third preset threshold value; and when the fourth weight change amounts are all larger than or equal to the fifth preset threshold value, determining that the weight abrupt change conditions which are about to cause the upper shaft clamping accident are met.

Step 613, the second determination is exited, and step 603 is returned.

Step 614, calculating a fifth weight change amount of the crystal from a fifth start time point corresponding to the current time point.

Step 615, determining whether the fifth weight variation is greater than or equal to a sixth preset threshold. If yes, go to step 616; if not, return to step 614.

Step 616, determining whether the fourth preset number of times has been continued to satisfy the fifth weight change amount being equal to or greater than the sixth preset threshold. If yes, go to step 617; if not, return to step 614.

Step 617, determining weight mutation conditions which are about to cause the upper shaft clamping accident, and triggering early warning information of the rod falling accident.

In this embodiment, the second judgment is added under the condition of the first crystal rising, so that the problem of misjudgment in the mode shown in fig. 5 can be solved, and misjudgment caused by errors of the crystal weighing mechanism is avoided.

In an alternative embodiment, after judging that the weight mutation condition accords with the preset type of accident, the method can trigger the prevention and treatment of the preset type of accident.

Illustratively, triggering the preventive treatment of the rod drop event includes at least one of:

The crystal rotation mechanism is controlled to stop crystal rotation, and the crystal lifting mechanism is controlled to improve the crystal lifting speed; in this way, the crystal can be raised quickly, so that collision with a device such as a crucible can be avoided.

The crucible rotation mechanism is controlled to stop the rotation of the crucible, and the crucible lifting mechanism is controlled to reduce the crucible lifting speed; in this way, the crucible can be lowered rapidly, avoiding collisions with the crystal.

Controlling the heat exchanger to stop ascending; in this way, collisions of the crystals with the heat exchanger can be avoided.

Controlling the heater to stop heating; in this way, the temperature of the silicon melt can be lowered so that no crystal formation can continue.

And controlling the feeder to stop feeding. In this way, the feed can be stopped so that crystals are not produced anymore.

Illustratively, triggering a preventative treatment of the upper shaft stuck incident includes at least one of: controlling the crystal lifting mechanism to stop crystal lifting; and controlling the crystal rotating mechanism to stop crystal rotation. By the mode, the crystal can stop rising and rotating, so that the upper shaft clamping accident is avoided.

Referring to fig. 7, a block diagram of an accident warning apparatus according to an embodiment of the present application is shown.

As shown in fig. 7, the accident pre-warning apparatus may include the following modules:

The acquisition module 701 is used for acquiring the weight of the crystal according to a preset rule in the crystal drawing process;

a judging module 702, configured to obtain a weight variation of the crystal based on the weight of the crystal, and judge whether the weight variation meets a weight mutation condition that is about to cause a preset type of accident;

and the early warning module 703 is configured to trigger early warning information of the preset type of accident after judging that the weight mutation condition is met.

Optionally, the preset type of accident includes a bar dropping accident, and the judging module 702 includes:

Optionally, the determining module 702 further includes:

Optionally, the preset type of accident includes an upper shaft stuck accident, and the judging module 702 includes:

Optionally, the fourth judging unit includes:

Optionally, the fourth judging unit further includes:

And/or the number of the groups of groups,

Optionally, the fourth judging unit 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.

In an embodiment of the present application, an electronic device is also provided. The electronic device may include one or more processors and one or more computer-readable storage media having instructions stored thereon, such as an application program. The instructions, when executed by the one or more processors, cause the processors to perform the incident early warning method of any of the embodiments described above.

Referring to fig. 8, a schematic diagram of an electronic device structure according to an embodiment of the present application is shown. As shown in fig. 8, the electronic device includes a processor 801, a communication interface 802, a memory 803, and a communication bus 804. The processor 801, the communication interface 802, and the memory 803 communicate with each other through the communication bus 804.

A memory 803 for storing a computer program.

The processor 801 is configured to implement the accident warning method according to any one of the above embodiments when executing the program stored in the memory 803.

The communication interface 802 is used for communication between the electronic device and other devices described above.

The communication bus 804 mentioned above may be a peripheral component interconnect standard (Peripheral Component Interconnect, PCI) bus or an extended industry standard architecture (Extended Industry Standard Architecture, EISA) bus, or the like. The communication bus may be classified as an address bus, a data bus, a control bus, or the like. For ease of illustration, the figures are shown with only one bold line, but not with only one bus or one type of bus.

The above-mentioned processor 801 may include, but is not limited to: central processing units (Central Processing Unit, CPU), network processors (Network Processor, NP), digital signal processors (Digital Signal Processing, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field-programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like.

The above mentioned memory 803 may include, but is not limited to: read Only Memory (ROM), random access Memory (Random Access Memory RAM), compact disk Read Only Memory (Compact Disc ReadOnly Memory CD-ROM), electrically erasable programmable Read Only Memory (Electronic Erasable Programmable ReadOnly Memory EEPROM), hard disk, floppy disk, flash Memory, and the like.

In an embodiment of the present application, there is also provided a computer-readable storage medium, on which a computer program is stored, the program being executable by a processor of an electronic device, which computer program, when executed by the processor, causes the processor to perform the accident pre-warning method as described in any one of the embodiments above.

In this specification, various embodiments are interrelated, and each embodiment is described in a progressive manner, and each embodiment is mainly described in a different manner from other embodiments, so that identical and similar parts between the various embodiments are referred to each other.

It is 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.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk) and including several instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method described in the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps described in connection with the embodiments disclosed herein can be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, etc.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. In view of the foregoing, this description should not be construed as limiting the application.

Claims

1. An accident pre-warning method, characterized in that the method comprises:

2. The method according to claim 1, wherein the predetermined type of accident includes a rod-off accident, acquiring a weight change amount of the crystal based on a weight of the crystal, and determining whether the weight change amount meets a weight abrupt change condition that is about to cause the rod-off accident, includes:

3. The method of claim 2, further comprising, prior to determining that the weight mutation condition that is about to cause a stick-off event is met:

4. The method of claim 1, wherein the predetermined type of accident comprises an upper axis stuck accident, wherein obtaining a weight change amount of the crystal based on a weight of the crystal, and wherein determining whether the weight change amount meets a weight abrupt change condition that is about to cause the upper axis stuck accident comprises:

5. The method according to claim 4, wherein, in the case where the crystal growth type is a first crystal growth type, obtaining a weight change amount of the crystal based on a weight of the crystal, determining whether the weight change amount meets a weight mutation condition that is about to cause an upper axis clamping accident, comprises:

6. The method of claim 5, further comprising, prior to determining that the weight mutation condition that is about to cause an upper shaft stuck event is met:

and/or the number of the groups of groups,

7. The method according to claim 5, wherein, in the case where the crystal growth type is a second crystal growth type, obtaining a weight change amount of the crystal based on a weight of the crystal, determining whether the weight change amount meets a weight mutation condition that is about to cause an upper axis clamping failure, comprises:

8. The method of claim 4, wherein determining the current type of crystal growth comprises:

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

triggering the prevention and treatment of the preset type of accidents.

10. The method of claim 9, wherein the pre-set type of incident comprises a rod drop incident; triggering the prevention and treatment of the rod drop accident, wherein the prevention and treatment comprises at least one of the following steps:

the crystal rotation mechanism is controlled to stop crystal rotation, and the crystal lifting mechanism is controlled to improve the crystal lifting speed;

the crucible rotation mechanism is controlled to stop the rotation of the crucible, and the crucible lifting mechanism is controlled to reduce the crucible lifting speed;

controlling the heat exchanger to stop ascending;

controlling the heater to stop heating;

and controlling the feeder to stop feeding.

11. The method of claim 9, wherein the pre-set type of incident comprises an upper axis stuck incident; triggering the prevention and treatment of the upper shaft clamping stagnation accident, wherein the prevention and treatment comprises at least one of the following steps:

controlling the crystal lifting mechanism to stop crystal lifting;

and controlling the crystal rotating mechanism to stop crystal rotation.

12. An accident pre-warning device, the device comprising:

13. An electronic device, comprising:

one or more processors; and

one or more computer-readable storage media having instructions stored thereon;

the instructions, when executed by the one or more processors, cause the processor to perform the incident early warning method of any one of claims 1 to 11.

14. A computer-readable storage medium, having stored thereon a computer program which, when executed by a processor, causes the processor to perform the accident pre-warning method according to any one of claims 1 to 11.