A channel liquid level stabilization system and control method

Abstract

The invention discloses a channel liquid level stabilization system and a control method, and relates to the technical field of glass substrate manufacturing. The invention solves the technical problem that there is no reasonable selection of adjustment method in the prior art, resulting in large cost loss. The invention collects furnace pressure data and liquid level data in real time through a furnace pressure gauge and a liquid level gauge, collects the current air pressure through a barometer, matches the furnace pressure data and the liquid level data with a target stability data table to obtain furnace pressure matching data and liquid level matching data, and calculates the adjusted air pressure according to the furnace pressure matching data and the liquid level matching data; calculates the furnace pressure adjustment power and the liquid level adjustment power corresponding to the furnace pressure matching data and the liquid level matching data, and selects the adjustment method according to the comparison result of the furnace pressure adjustment power and the liquid level adjustment power; calculates the furnace pressure adjustment rate and the liquid level adjustment rate during the adjustment process, compares the furnace pressure adjustment rate and the liquid level adjustment rate with the safe adjustment rate range, and generates an alarm signal.

Description

Technical Field

[0001] The invention belongs to the field of glass substrate manufacturing, and in particular relates to a channel liquid level stabilization system and a control method. Background Art

[0002] During the production process of TFT-LCD liquid crystal glass substrates, the furnace pressure of the electric melting furnace will fluctuate significantly due to uncontrollable factors such as various operations, which will cause the channel liquid level to fluctuate, change the normal production state of the channel, increase the melting defects, and affect the production capacity. In order to prevent the channel liquid level from fluctuating and ensure the normal production, the channel liquid level needs to be stabilized and controlled.

[0003] In the prior art, the electric furnace pressure stabilization system is only relied upon to indirectly control the channel liquid level fluctuation, and the specific adjustment requirements are not clear enough. When actually controlling, the actual conditions of the channel liquid level are different, and the specific adjustment strategies will also be different. To achieve the same stable state, different adjustment strategies require different powers. In the actual control process, the electric furnace pressure stabilization system is adjusted according to fixed adjustment conditions. If other methods to achieve the same stable state require less power, it is impossible to reasonably select the adjustment method, resulting in a high adjustment cost.

[0004] The present invention provides a channel liquid level stabilization system and a control method to solve the above technical problems. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art; to this end, the present invention proposes a channel liquid level stabilization system and a control method, which are used to solve the technical problem that there is no reasonable selection and adjustment method in the prior art, resulting in large cost losses.

[0006] To achieve the above-mentioned object, a first aspect of the present invention provides a channel liquid level stabilization system, comprising: a data collection module, a gas pressure regulating module and an alarm module;

[0007] Data collection module: used to collect furnace pressure data, liquid level data and current gas pressure in real time;

[0008] Gas pressure regulating module: used to obtain and adjust gas pressure based on furnace pressure data and liquid level data; adjust channel gas pressure according to the adjusted gas pressure and current gas pressure to obtain detection data;

[0009] Alarm module: used to generate alarm signals based on detection data.

[0010] Preferably, the adjusting gas pressure based on furnace pressure data and liquid level data comprises:

[0011] Extract furnace pressure data and liquid level data; wherein the furnace pressure data includes the current furnace pressure detected by the furnace pressure gauge and the corresponding furnace pressure time; the liquid level data includes the current liquid level detected by the liquid level gauge and the corresponding liquid level time;

[0012] Extract target stability data table from historical experiment database;

[0013] The current furnace pressure and the current liquid level are matched with the target stable data table respectively to obtain furnace pressure matching data and liquid level matching data; based on the current furnace pressure, the current liquid level, the furnace pressure matching data and the liquid level matching data, the adjusted gas pressure is obtained.

[0014] Preferably, the step of matching the current furnace pressure and the current liquid level with the target stability data table to obtain furnace pressure matching data and liquid level matching data includes:

[0015] Extract the current furnace pressure, current liquid level and target stability data table;

[0016] Calculate the furnace pressure difference between the current furnace pressure and the target furnace pressure in the target stable data table; mark the target furnace pressure, target liquid level and target gas pressure corresponding to the minimum furnace pressure difference as furnace pressure matching data;

[0017] Calculate the liquid level difference between the current liquid level and the target liquid level in the target stable data table; mark the target furnace pressure, target liquid level and target gas pressure corresponding to the minimum value of the liquid level difference as liquid level matching data.

[0018] Preferably, the adjusting gas pressure based on the current furnace pressure, the current liquid level, the furnace pressure matching data and the liquid level matching data comprises:

[0019] Extract current furnace pressure, current liquid level, furnace pressure matching data and liquid level matching data;

[0020] The target gas pressure in the furnace pressure matching data is marked as the furnace pressure gas pressure, and the target gas pressure in the liquid level matching data is marked as the liquid level gas pressure;

[0021] The difference between the current furnace pressure and the target furnace pressure in the furnace pressure matching data is marked as the furnace pressure standard deviation, and the difference between the current liquid level and the target liquid level in the furnace pressure matching data is marked as the liquid level standard deviation; the furnace pressure adjustment coefficient and the liquid level adjustment coefficient are extracted from the historical experiment database; the furnace pressure adjustment power corresponding to the furnace pressure matching data is obtained by adding the product of the furnace pressure standard deviation and the furnace pressure adjustment coefficient to the liquid level standard deviation and the liquid level adjustment coefficient;

[0022] The difference between the current furnace pressure and the target furnace pressure in the liquid level matching data is marked as the furnace pressure standard deviation, and the difference between the current liquid level and the target liquid level in the liquid level matching data is marked as the liquid level standard deviation; the product of the furnace pressure standard deviation and the furnace pressure adjustment coefficient is added to the liquid level standard deviation and the liquid level adjustment coefficient to obtain the liquid level adjustment power corresponding to the liquid level matching data;

[0023] The difference between the current air pressure and the furnace pressure is marked as the furnace pressure adjustment air pressure, and the difference between the current air pressure and the liquid surface pressure is marked as the liquid surface adjustment air pressure;

[0024] Determine whether the furnace pressure adjustment power is greater than the liquid level adjustment power; if yes, use the liquid level adjustment gas pressure as the adjustment gas pressure; if no, use the furnace pressure adjustment gas pressure as the adjustment gas pressure.

[0025] Preferably, the step of adjusting the channel air pressure according to the adjusted air pressure and the current air pressure to obtain the detection data includes:

[0026] Determine whether the current liquid level corresponding to the adjusted air pressure is greater than the target liquid level; if yes, reduce the current air pressure; if no, increase the current air pressure;

[0027] During the adjustment process, the furnace pressure and the liquid level are detected and adjusted in real time, and the furnace pressure and the liquid level are integrated to obtain the detection data.

[0028] Preferably, generating an alarm signal based on the detection data includes:

[0029] Extracting a safe adjustment rate range from a historical experiment database; the safe adjustment rate range includes a furnace pressure safe adjustment rate range and a liquid level safe adjustment rate range;

[0030] The furnace pressure adjustment rate is obtained by combining the adjusted furnace pressure, the current furnace pressure, the furnace pressure time and the current time, and the liquid level adjustment rate is obtained by combining the adjusted liquid level, the current liquid level, the liquid level time and the current time;

[0031] Determine whether the furnace pressure adjustment rate meets the furnace pressure safety adjustment rate range; if yes, generate a normal furnace pressure adjustment signal; if no, generate an abnormal furnace pressure adjustment signal;

[0032] Determine whether the liquid level adjustment rate meets the liquid level safety adjustment rate range; if yes, generate a normal liquid level adjustment signal; if no, generate an abnormal liquid level adjustment signal;

[0033] The abnormal furnace pressure adjustment signal and the abnormal liquid level adjustment signal are integrated to obtain an alarm signal.

[0034] A second aspect of the present invention provides a channel liquid level stabilization control method, which is applied to the above-mentioned channel liquid level stabilization system, and is characterized by comprising:

[0035] Step 1: Collect furnace pressure data, liquid level data and current gas pressure in real time;

[0036] Step 2: Obtain the adjusted gas pressure based on the furnace pressure data and the liquid level data; adjust the channel gas pressure according to the adjusted gas pressure and the current gas pressure to obtain the detection data;

[0037] Step 3: Generate an alarm signal based on the detection data.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] 1. The present invention collects furnace pressure data and liquid level data in real time through a furnace pressure gauge and a liquid level gauge, collects current air pressure through a barometer, extracts a target stable data table from a historical experiment database, matches the furnace pressure data and liquid level data with the target stable data table to obtain furnace pressure matching data and liquid level matching data, and calculates the adjusted air pressure according to the furnace pressure matching data and the liquid level matching data, thereby improving the accuracy and reliability of control; respectively calculates the furnace pressure adjustment power and the liquid level adjustment power corresponding to the furnace pressure matching data and the liquid level matching data, and selects an adjustment method according to the comparison result of the furnace pressure adjustment power and the liquid level adjustment power, thereby significantly reducing energy consumption, improving the energy efficiency of the system, achieving the target air pressure faster, improving the response speed of the system, and ensuring the continuity and stability of the production process; extracts a safe adjustment rate range from a historical experiment database, calculates the furnace pressure adjustment rate and the liquid level adjustment rate during the adjustment process, and compares the furnace pressure adjustment rate and the liquid level adjustment rate with the safe adjustment rate range, respectively, generates an alarm signal, ensures the stable operation of the system, and detects the normal operation of the equipment in real time.

[0040] 2. The present invention matches and calculates the furnace pressure data, current gas pressure and liquid level data with the furnace pressure matching data and the liquid level matching data respectively, extracts the furnace pressure adjustment coefficient and the liquid level adjustment coefficient from the historical experiment database, calculates the furnace pressure adjustment power and the liquid level adjustment power respectively, and makes adjustments based on the comparison results of the furnace pressure adjustment power and the liquid level adjustment power, which can significantly reduce energy consumption and improve the system response speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 The following is a flowchart of an embodiment of the present invention.

[0043] Figure 2 It is a system composition diagram of the present invention.

[0044] Figure 3 The following is a complete flow chart of generating an alarm signal in one embodiment of the present invention. DETAILED DESCRIPTION

[0045] The technical scheme of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] See also Figure 1-Figure 3 , the first aspect of the present invention provides a channel liquid level stabilization system and control method, including: a data collection module, a gas pressure regulation module and an alarm module;

[0047] Data collection module: used to collect furnace pressure data, liquid level data and current gas pressure in real time.

[0048] Exemplarily, a furnace pressure gauge and a liquid level gauge are provided inside the furnace container to collect the current furnace pressure and the current liquid level in the container in real time, and the furnace pressure time and the liquid level time corresponding to the collection are recorded.

[0049] Gas pressure regulating module: used to obtain the adjusted gas pressure based on the furnace pressure data and the liquid level data; the channel gas pressure is adjusted according to the adjusted gas pressure and the current gas pressure to obtain the detection data.

[0050] Exemplarily, a target stability data table is extracted from a historical experiment database, the target stability data table including a target furnace pressure and a target gas pressure when each set of target liquid levels in the historical experiment data reaches stability; the furnace pressure difference between the current furnace pressure and the target furnace pressure in the target stability data table is calculated, and a set of target furnace pressures, target liquid levels and target gas pressures with the smallest furnace pressure difference are selected and integrated to obtain furnace pressure matching data; the furnace pressure matching data is the target stability data achieved by the minimum adjustment of the furnace pressure; the liquid level difference between the current liquid level and the target liquid level in the target stability data table is calculated, and a set of target furnace pressures, target liquid levels and target gas pressures with the smallest liquid level difference are selected and integrated to be marked as liquid level matching data, and the liquid level matching data is the target stability data achieved by the minimum adjustment of the liquid level.

[0051] It should be noted that the furnace pressure matching data indicates that the target data with the smallest difference from the current furnace pressure is used as a benchmark, and the furnace pressure is adjusted less to stabilize the liquid level in the channel; the liquid level matching data indicates that the gas pressure is adjusted as little as possible to stabilize the liquid level based on the current liquid level; by adjusting the gas pressure, the rise and fall of the liquid level in the channel can be controlled to achieve liquid level stability.

[0052] In some other preferred embodiments, when the current liquid level and the current furnace pressure are close to a certain set of target stability data, the furnace pressure matching data and the liquid level matching data may be the same set of data, indicating that this set of data is the best data for achieving channel liquid level stability at present, and adjustments can be made directly based on this set of data.

[0053] The target gas pressure in the furnace pressure matching data is marked as furnace pressure gas pressure, and the target gas pressure in the liquid level matching data is marked as liquid level gas pressure; the difference between the current furnace pressure and the target furnace pressure in the furnace pressure matching data is marked as furnace pressure standard deviation, and the difference between the current liquid level and the target liquid level in the furnace pressure matching data is marked as liquid level standard deviation; the difference between the current furnace pressure and the target furnace pressure in the liquid level matching data is marked as furnace pressure standard deviation, and the difference between the current liquid level and the target liquid level in the liquid level matching data is marked as liquid level standard deviation; the furnace pressure adjustment coefficient and the liquid level adjustment coefficient are extracted from the historical experiment database; the furnace pressure adjustment coefficient is the power required for each change of 1 kPa furnace pressure, and the unit is unit power / unit furnace pressure, and the liquid level adjustment coefficient is the power required for each change of 1 cm liquid level height, and the unit is unit power / unit height.

[0054] The furnace pressure adjustment power LYP corresponding to the furnace pressure matching data is calculated by the formula LYP=LYB×LYX+YMB×YMX, wherein LYB represents the furnace pressure standard deviation, LYX represents the furnace pressure adjustment coefficient, YMB represents the liquid level standard deviation, and YMX represents the liquid level adjustment coefficient.

[0055] The liquid level adjustment power YMP corresponding to the liquid level matching data is calculated by the formula YMP=LYZ×LYX+YMZ×YMX, wherein LYZ represents the furnace pressure tolerance and YMZ represents the liquid level tolerance.

[0056] Determine whether the furnace pressure adjustment power is greater than the liquid level adjustment power; if the furnace pressure adjustment power is greater than the liquid level adjustment power, it means that the power required to adjust to the liquid level matching data is less, so choose to apply the liquid level matching data as the adjustment direction, mark the difference between the current air pressure and the liquid level air pressure as the liquid level adjustment air pressure, and apply the liquid level adjustment air pressure as the adjustment air pressure; if the furnace pressure adjustment power is less than the liquid level adjustment power, it means that the power required to adjust to the furnace pressure matching data is less, choose to apply the furnace pressure matching data as the adjustment direction, mark the difference between the current air pressure and the furnace pressure as the furnace pressure adjustment air pressure and apply it as the adjustment air pressure.

[0057] Determine whether the current liquid level corresponding to the adjusted gas pressure is greater than the target liquid level. If the adjusted gas pressure is greater than the target liquid level, the gas pressure needs to be lowered to make the liquid flow out of the container; if the adjusted gas pressure is less than the target liquid level, the gas pressure needs to be increased to make the liquid flow into the container; the adjusted gas pressure is used for adjustment, and the furnace pressure and liquid level are detected in real time through the furnace pressure gauge and liquid level gauge during the adjustment process, and they are marked as adjusted furnace pressure and adjusted liquid level respectively, and the adjusted furnace pressure and adjusted liquid level are integrated to obtain the detection data.

[0058] Alarm module: used to generate alarm signals based on detection data.

[0059] Exemplarily, the furnace pressure adjustment rate LTV is calculated by the formula LYV=TLY-DLY / (DQT-LYT), wherein TLV represents the adjusted furnace pressure, DLV represents the current furnace pressure, DQT represents the current time, and LYT represents the furnace pressure time.

[0060] The liquid level adjustment rate YMV is calculated by the formula YMV=TYM-DYM / (DQT-YMT), wherein TYM represents the adjusted liquid level, DYM represents the current liquid level, and YMT represents the liquid level time.

[0061] The safe adjustment rate range is extracted from the historical experiment database to determine whether the furnace pressure adjustment rate is within the furnace pressure safety adjustment rate range. If the furnace pressure adjustment rate does not meet the furnace pressure safety adjustment rate range, it means that the furnace pressure adjustment rate is abnormal, which may be due to equipment damage or incorrect parameter settings, and an abnormal furnace pressure adjustment signal is generated; determine whether the liquid level adjustment rate is within the liquid level safety adjustment rate range. If the liquid level adjustment rate does not meet the liquid level safety adjustment rate range, it means that the liquid level adjustment rate is abnormal, and an abnormal liquid level adjustment signal is generated. The abnormal furnace pressure adjustment signal and the abnormal liquid level adjustment signal are integrated to obtain an alarm signal; when an alarm signal appears, the staff will inspect and repair the equipment according to the alarm signal.

[0062] A second aspect of the present invention provides a channel liquid level stabilization control method, which is applied to the above-mentioned channel liquid level stabilization system, and is characterized by comprising:

[0063] Step 1: Collect furnace pressure data, liquid level data and current gas pressure in real time;

[0064] Step 2: Obtain the adjusted gas pressure based on the furnace pressure data and the liquid level data; adjust the channel gas pressure according to the adjusted gas pressure and the current gas pressure to obtain the detection data;

[0065] Step 3: Generate an alarm signal based on the detection data.

[0066] Part of the data in the above formula is calculated by removing the dimension and taking its numerical value. The formula is a formula closest to the actual situation obtained by software simulation of a large amount of collected data; the preset parameters and preset thresholds in the formula are set by technical personnel in this field according to actual conditions or obtained through simulation of a large amount of data.

[0067] Working principle of the present invention:

[0068] The present invention collects furnace pressure data, liquid level data and current gas pressure in real time through a barometer and a liquid level gauge, extracts a target stable data table from a historical experiment database, matches the furnace pressure data and liquid level data with the target stable data table to obtain furnace pressure matching data and liquid level matching data, calculates differences according to the furnace pressure data, liquid level data, furnace pressure matching data and liquid level matching data, and calculates furnace pressure adjustment power and liquid level adjustment power in combination with the furnace pressure adjustment coefficient and liquid level adjustment coefficient extracted from the historical experiment database; selects an adjustment method according to a comparison result of the furnace pressure adjustment power and the liquid level adjustment power to obtain an adjusted gas pressure; makes an adjustment according to a comparison result of the current liquid level with the target liquid level, detects the adjusted furnace pressure and the adjusted liquid level in real time during the adjustment process to obtain detection data, extracts a safe adjustment rate range from the historical experiment database, compares the furnace pressure adjustment rate and the liquid level adjustment rate with the safe adjustment rate range respectively, and generates an alarm signal.

[0069] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A channel liquid level stabilization system, characterized in that: include: Data collection module, air pressure regulation module and alarm module; Data collection module: used to collect furnace pressure data, liquid level data and current gas pressure in real time; Gas pressure regulating module: used to adjust gas pressure based on furnace pressure data and liquid level data; The channel air pressure is adjusted according to the adjusted air pressure and the current air pressure to obtain the detection data; Alarm module: used to generate alarm signals based on detection data.

2. A channel liquid level stabilization system according to claim 1, characterized in that: The method of obtaining and adjusting the gas pressure based on the furnace pressure data and the liquid level data includes: Extract furnace pressure data and liquid level data; wherein the furnace pressure data includes the current furnace pressure detected by the furnace pressure gauge and the corresponding furnace pressure time; the liquid level data includes the current liquid level detected by the liquid level gauge and the corresponding liquid level time; Extract target stability data table from historical experiment database; The current furnace pressure and the current liquid level are matched with the target stable data table respectively to obtain furnace pressure matching data and liquid level matching data; based on the current furnace pressure, the current liquid level, the furnace pressure matching data and the liquid level matching data, the adjusted gas pressure is obtained.

3. A channel liquid level stabilization system according to claim 2, characterized in that: The step of matching the current furnace pressure and the current liquid level with the target stable data table to obtain furnace pressure matching data and liquid level matching data includes: Extract the current furnace pressure, current liquid level and target stability data table; Calculate the furnace pressure difference between the current furnace pressure and the target furnace pressure in the target stable data table; mark the target furnace pressure, target liquid level and target gas pressure corresponding to the minimum furnace pressure difference as furnace pressure matching data; Calculate the liquid level difference between the current liquid level and the target liquid level in the target stable data table; mark the target furnace pressure, target liquid level and target gas pressure corresponding to the minimum value of the liquid level difference as liquid level matching data.

4. A channel liquid level stabilization system according to claim 2, characterized in that: The adjusting the gas pressure based on the current gas pressure, the current furnace pressure, the current liquid level, the furnace pressure matching data and the liquid level matching data comprises: Extract current gas pressure, current furnace pressure, current liquid level, furnace pressure matching data and liquid level matching data; The target gas pressure in the furnace pressure matching data is marked as the furnace pressure gas pressure, and the target gas pressure in the liquid level matching data is marked as the liquid level gas pressure; The difference between the current furnace pressure and the target furnace pressure in the furnace pressure matching data is marked as the furnace pressure standard deviation, and the difference between the current liquid level and the target liquid level in the furnace pressure matching data is marked as the liquid level standard deviation; the furnace pressure adjustment coefficient and the liquid level adjustment coefficient are extracted from the historical experiment database; the product of the furnace pressure standard deviation and the furnace pressure adjustment coefficient and the sum of the liquid level standard deviation and the liquid level adjustment coefficient are calculated to obtain the furnace pressure adjustment power corresponding to the furnace pressure matching data; The difference between the current furnace pressure and the target furnace pressure in the liquid level matching data is marked as the furnace pressure standard deviation, and the difference between the current liquid level and the target liquid level in the liquid level matching data is marked as the liquid level standard deviation; the product of the furnace pressure standard deviation and the furnace pressure adjustment coefficient is added to the liquid level standard deviation and the liquid level adjustment coefficient to obtain the liquid level adjustment power corresponding to the liquid level matching data; The difference between the current air pressure and the furnace pressure is marked as the furnace pressure adjustment air pressure, and the difference between the current air pressure and the liquid surface pressure is marked as the liquid surface adjustment air pressure; Determine whether the furnace pressure adjustment power is greater than the liquid level adjustment power; if yes, use the liquid level adjustment gas pressure as the adjustment gas pressure; if no, use the furnace pressure adjustment gas pressure as the adjustment gas pressure.

5. A channel liquid level stabilization system according to claim 1, characterized in that: The step of adjusting the channel air pressure according to the adjusted air pressure and the current air pressure to obtain the detection data includes: Determine whether the current liquid level corresponding to the adjusted air pressure is greater than the target liquid level; if yes, reduce the current air pressure; if no, increase the current air pressure; During the adjustment process, the furnace pressure and the liquid level are detected and adjusted in real time, and the furnace pressure and the liquid level are integrated to obtain the detection data.

6. A channel liquid level stabilization system according to claim 1, characterized in that: The generating of an alarm signal based on the detection data comprises: Extracting a safe adjustment rate range from a historical experiment database; the safe adjustment rate range includes a furnace pressure safe adjustment rate range and a liquid level safe adjustment rate range; The furnace pressure adjustment rate is obtained by combining the adjusted furnace pressure, the current furnace pressure, the furnace pressure time and the current time, and the liquid level adjustment rate is obtained by combining the adjusted liquid level, the current liquid level, the liquid level time and the current time; Determine whether the furnace pressure adjustment rate meets the furnace pressure safety adjustment rate range; if yes, generate a normal furnace pressure adjustment signal; if no, generate an abnormal furnace pressure adjustment signal; Determine whether the liquid level adjustment rate meets the liquid level safety adjustment rate range; if yes, generate a normal liquid level adjustment signal; if no, generate an abnormal liquid level adjustment signal; The abnormal furnace pressure adjustment signal and the abnormal liquid level adjustment signal are integrated to obtain an alarm signal.

7. A channel liquid level stabilization control method, applied to a channel liquid level stabilization system according to any one of claims 1 to 6, characterized in that: include: Step 1: Collect furnace pressure data, liquid level data and current gas pressure in real time; Step 2: Adjust the gas pressure based on the furnace pressure data and liquid level data; The channel air pressure is adjusted according to the adjusted air pressure and the current air pressure to obtain the detection data; Step 3: Generate an alarm signal based on the detection data.

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