Empty determination method, device, equipment and storage medium for material supply system

Abstract

The present application provides an empty judgment method, device, equipment and storage medium for a material supply system, which relates to the field of material supply technology. The system includes: a material container, a gas-liquid separator, and a liquid detection sensor; the material container and the gas-liquid separator are connected by a pipeline; the liquid detection sensor is arranged at an exhaust valve near the upper end of the gas-liquid separator, and is used to detect whether there is liquid at a fixed liquid level after the material liquid supplied by the material container enters the gas-liquid separator; the method includes obtaining a feedback signal from the liquid detection sensor; accumulating supply parameters during the process of the material container supplying the material liquid to the gas-liquid separator; judging whether the material container is empty based on the supply parameters and the feedback signal, thereby achieving fast, accurate and effective empty judgment, improving online detection efficiency, and saving manpower and material resources.

Description

Technical Field

[0001] The present application relates to the field of material supply technology, and in particular to a method, device, equipment and storage medium for determining the empty space of a material supply system. Background Art

[0002] With the rise and development of China's integrated circuit, flat panel display, semiconductor lighting, solar photovoltaic, optical fiber manufacturing and biopharmaceutical industries, factories have an increasing demand for chemicals used in production, and at the same time have higher requirements for the safety and stability of chemical media supply systems, as well as the impurity content and particle size of chemical media.

[0003] Currently, in chemical medium supply systems, chemical ton barrels and chemical containers are commonly used to supply the chemical media required for production. However, the chemical media in the containers will gradually be used up as the factory process machines are producing. The existing methods for determining whether the chemical media in the supply pipelines and containers are empty require engineering technicians to develop their own methods based on project requirements, which increases labor costs and cannot quickly and accurately determine whether they are empty, making it impossible to promptly remind factory staff to replace chemical ton barrels or chemical containers. Summary of the Invention

[0004] In view of this, the purpose of the embodiments of the present application is to provide a method, device, equipment and storage medium for judging whether a material supply system is empty, by obtaining the feedback signal of the liquid detection sensor and combining multiple supply parameters accumulated in the process of supplying material liquid from the material container to the gas-liquid separator, to judge whether the material container supply system is empty, thereby achieving fast and accurate automatic empty judgment, thereby solving the above-mentioned technical problem of "requiring engineering and technical personnel to develop it themselves according to project requirements, increasing labor costs, and being unable to quickly and accurately achieve effective empty judgment."

[0005] In a first aspect, an embodiment of the present application provides a method for determining whether a material supply system is empty, the system comprising: a material container, a gas-liquid separator, and a liquid detection sensor; the material container is connected to the gas-liquid separator by a pipeline; the liquid detection sensor is arranged at an exhaust valve near the upper end of the gas-liquid separator, and is used to detect whether there is liquid at a fixed liquid level after the material liquid supplied by the material container enters the gas-liquid separator; the method comprises: obtaining a feedback signal from the liquid detection sensor; accumulating supply parameters during the process of the material container supplying material liquid to the gas-liquid separator; and judging whether the material container is empty based on the supply parameters and the feedback signal.

[0006] In the above implementation process, when the material container supply system containing chemical media or other materials starts to supply, the embodiment of the present application can be used to provide an empty judgment method for the material supply system, which can detect and determine whether there is liquid in the supply pipeline based on the set supply parameters and the feedback signal of the liquid detection sensor, thereby further determining whether the chemical ton container and the chemical container are empty, achieving fast, accurate and effective empty judgment, improving online detection efficiency, and saving manpower and material resources.

[0007] Optionally, the supply parameters include: non-empty judgment time and empty judgment time; the feedback signal includes a liquid signal and a liquid-free signal; judging whether the material container is empty based on the supply parameters and the feedback signal includes: accumulating the non-empty judgment time while waiting for the material container to supply material liquid to the gas-liquid separator; if the non-empty judgment time exceeds the non-empty judgment preset threshold and the feedback signal is a liquid signal, resetting the empty judgment time; if the non-empty judgment time exceeds the non-empty judgment preset threshold and the feedback signal is a liquid-free signal, starting to accumulate the empty judgment time; if the empty judgment time exceeds the empty judgment preset threshold, determining that the material container is empty.

[0008] In the above implementation process, the emptying is judged by accumulating the supply time. When the waiting time for the pump to draw the liquid into the gas-liquid separator is exceeded, and the liquid detection sensor has not detected the sensor feedback signal for a period of time, it means that no liquid has entered the gas-liquid separator. Then, the container can be directly judged to be empty, which improves the efficiency of online empty judgment and saves manpower and material resources.

[0009] Optionally, the supply parameters also include: exhaust timeout time; if the non-empty judgment time exceeds the non-empty judgment preset threshold and the feedback signal is a liquid-free signal, the method also includes: opening the exhaust valve of the gas-liquid separator and accumulating the exhaust timeout time; if the exhaust timeout time exceeds the exhaust timeout preset threshold, an exhaust timeout alarm signal is sent.

[0010] In the above implementation process, the setting of the exhaust timeout supply parameter can prevent the chemical medium in the pipeline from leaking out of the exhaust valve in large quantities due to the valve being opened for a long time when the parameter setting is incorrect, thereby reducing the error and improving the accuracy of the air judgment.

[0011] Optionally, the supply parameters also include: the number of times the exhaust valve is opened; if the non-empty judgment time exceeds a preset non-empty judgment threshold and the feedback signal is a liquid-free signal, the method also includes: opening the exhaust valve of the gas-liquid separator and accumulating the number of times the exhaust valve is opened; if the number of times the exhaust valve is opened exceeds a preset exhaust number threshold, it is determined that the material container is empty.

[0012] In the above implementation process, in addition to judging the air empty by accumulating the air empty time, the air empty can also be judged by accumulating the number of times the exhaust valve is opened, which further improves the efficiency of online air empty judgment.

[0013] Optionally, the fixed liquid level is the horizontal height of the liquid detection sensor located on the gas-liquid separator; the supply parameters also include: the duration of liquid presence; the exhaust valve of the gas-liquid separator is opened, and after the exhaust valve is opened, the method further includes: if the exhaust valve opening times do not exceed the preset threshold of exhaust times and the feedback signal is a liquid-free signal, then repeatedly accumulating the exhaust valve opening times; if the exhaust valve opening times do not exceed the preset threshold of exhaust times and the feedback signal is a liquid-presence signal, then accumulating the duration of liquid presence of the fixed liquid level detected by the liquid detection sensor; if the liquid presence duration exceeds the preset threshold of the liquid level, then closing the exhaust valve.

[0014] In the above implementation process, the setting of the liquid supply duration parameter can be used to prevent the liquid level fluctuation from falsely triggering the sensor. In this way, the valve closing is delayed to ensure that the liquid level must be higher than the sensor installation position when the valve is closed, reducing the error of the feedback signal and improving the accuracy of empty judgment.

[0015] Optionally, if the duration of liquid presence exceeds a preset threshold value of the liquid level, closing the exhaust valve includes: if the duration of liquid presence exceeds a preset threshold value of the liquid level, closing the exhaust valve after a delay of a period of time.

[0016] In the above implementation process, the exhaust valve is closed with a delay, which ensures that the liquid height is really higher than the liquid detection sensor, and avoids the error caused by the sensor being mistakenly triggered by liquid level fluctuations.

[0017] Optionally, the supply parameter is determined by counting cumulatively by the clock circuit.

[0018] In the above implementation process, the counting accumulation is realized by counting clock pulses through the program-controlled clock circuit, which realizes automatic statistics, has strong feasibility and low cost.

[0019] In the second aspect, an embodiment of the present application provides an empty detection device for a material supply system, the system comprising: a material container, a gas-liquid separator, and a liquid detection sensor, the material container being connected to the gas-liquid separator through a pipeline, the liquid detection sensor being arranged at an exhaust valve near the upper end of the gas-liquid separator, for detecting whether there is liquid at a fixed liquid level after the material liquid supplied by the material container enters the gas-liquid separator; the device comprising: an acquisition module for acquiring a feedback signal from the liquid detection sensor; an accumulation module for accumulating supply parameters during the process of the material container supplying material liquid to the gas-liquid separator; and an empty detection module for judging whether the material container is empty based on the supply parameters and the feedback signal.

[0020] In a third aspect, an embodiment of the present application further provides an electronic device comprising: a processor and a memory, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the machine-readable instructions are executed by the processor to perform the steps of the above method.

[0021] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the above method are executed.

[0022] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the following embodiments are given in conjunction with the accompanying drawings for detailed description as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 A flow chart of a method for determining empty space in a material supply system provided in an embodiment of the present application;

[0025] Figure 2 A schematic diagram of a material supply system provided in an embodiment of the present application;

[0026] FIG3( a ) is a flow chart of a method for determining the empty state of a material supply system provided in an embodiment of the present application;

[0027] FIG3( b ) is a flow chart of a method for determining the empty state of a material supply system provided in an embodiment of the present application;

[0028] Figure 4 A schematic diagram of the functional modules of a vacuum determination device for a material supply system provided in an embodiment of the present application; and

[0029] Figure 5 A block diagram of an electronic device for a void determination device in a material supply system provided in an embodiment of the present application.

[0030] Icons: 01-Material supply system; 10-Material container; 11-Gas-liquid separator; 12-Liquid detection sensor; 13-Pipeline; 14-Exhaust valve; 15-Ball pump; 210-Acquisition module; 220-Accumulation module; 230-Empty judgment module; 240-Timeout alarm module; 250-Exhaust valve closing module; 300-Electronic device; 311-Memory; 312-Memory controller; 313-Processor; 314-Peripheral interface; 315-Input and output unit; 316-Display unit. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work fall within the scope of protection of the present application.

[0032] It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. The terms "comprises", "comprising" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element. The terms "first", "second", etc. are used only to distinguish descriptions and are not to be understood as indicating or implying relative importance.

[0033] See also Figure 1 , Figure 1 A flow chart of a method for determining an empty space in a material supply system 01 provided in an embodiment of the present application, wherein the system includes: a material container 10, a gas-liquid separator 11, and a liquid detection sensor 12; the material container 10 is connected to the gas-liquid separator 11 through a pipe 13; the liquid detection sensor 12 is arranged at an exhaust valve 14 near the upper end of the gas-liquid separator 11, and is used to detect whether there is liquid at a fixed liquid level after the material liquid supplied by the material container 10 enters the gas-liquid separator 11.

[0034] For example, Figure 2 As shown, the system can be a conventional chemical medium supply device. Specifically, it may include: a material container 10, a connecting pipe 13, a bellows pump 15, a gas-liquid separator 11, a liquid detection sensor 12, an exhaust valve 14, and a programmable logic controller (PLC). The material container 10 can be used to hold various chemical raw material liquids such as antifreeze, petroleum, urea ammonium nitrate solution, ethyl acetate, etc., and can also hold other materials, which are not specifically limited in this application. The material container 10 can be shaped like a barrel, bottle, trough, or other enclosed container that can hold the various materials mentioned above.

[0035] The connecting pipe 13 sequentially connects the material container 10, the bellows pump 15, and the gas-liquid separator 11. A liquid detection sensor 12 is provided on the gas-liquid separator 11 to detect whether the liquid in the gas-liquid separator 11 has reached a fixed liquid level. An exhaust valve 14 is provided at the top of the gas-liquid separator 11 to discharge the gas in the gas-liquid separator 11. A programmable logic controller (PLC) is connected to the liquid detection sensor 12 and the exhaust valve 14. The programmable logic controller (PLC) obtains the switching signal of the liquid detection sensor 12 and controls the opening and closing of the exhaust valve 14 to exhaust the gas, thereby realizing the emptying function of the supply pipe 13 and the material container 10 in this method.

[0036] The working principle of the system can be as follows: the connecting pipe 13 uses the power provided by the bellows pump 15 to draw the chemical liquid in the material container 10 into the gas-liquid separator 11, where the gas and liquid are separated. The liquid can be discharged from the liquid outlet at the lower end of the gas-liquid separator 11 to other devices that need to use the raw material liquid. The liquid detection sensor 12 at the upper end of the gas-liquid separator 11 can detect the liquid separated in the gas-liquid separator 11, and the opening and closing of the exhaust valve 14 at the top of the gas-liquid separator 11 can determine whether to discharge the gas separated from the gas-liquid separator 11. The programmable logic controller (PLC) can realize the emptying function of the supply pipe 13 and the material container 10 of this method through the switching signals of the liquid detection sensor 12 and the exhaust valve 14.

[0037] The method may specifically include step 100 , step 120 , and step 140 .

[0038] Step 100: Obtaining a feedback signal from the liquid detection sensor 12;

[0039] Step 120: In the process of the material container 10 supplying the material liquid to the gas-liquid separator 11, accumulating the supply parameters;

[0040] Step 140: Determine whether the material container 10 is empty based on the supply parameters and the feedback signal.

[0041] For example, several relevant supply parameters that characterize the supply of raw liquid from the material container 10 can first be set in a software program integrated into a programmable logic controller (PLC). When the functional software program is enabled, the feedback signal and supply signal from the liquid detection sensor 12 are simultaneously received. Based on the set supply parameters and the feedback signal indicating the presence of liquid, a comprehensive determination is made as to whether the supply pipeline 13 and the material container 10 are empty. When the chemical medium supply system is supplying, a software counting program accumulates various supply parameters. Specifically, the accumulated time when the feedback signal from the liquid detection sensor 12 is not detected can be used. This can be combined with a non-empty time parameter, an empty time parameter, or the accumulated number of times the exhaust valve 14 is opened to further determine whether the chemical tonnage container and the chemical container are empty.

[0042] When the supply system of the material container 10 containing chemical media or other materials starts to supply, it detects and determines whether there is liquid in the supply pipeline 13 based on the set supply parameters and the feedback signal of the liquid detection sensor 12, thereby further determining whether the chemical ton container and the chemical container are empty, achieving fast, accurate and effective empty judgment, improving online detection efficiency, and saving manpower and material resources.

[0043] In one embodiment, the supply parameters include: non-empty time and empty time; the feedback signal includes a liquid signal and a liquid-free signal; step 140 may specifically include:

[0044] Step 145: while waiting for the material container 10 to supply the material liquid to the gas-liquid separator 11, the non-empty time is accumulated;

[0045] Step 150: If the non-empty judgment time exceeds the non-empty judgment preset threshold and the feedback signal is a liquid signal, the empty judgment time is reset; if the non-empty judgment time exceeds the non-empty judgment preset threshold and the feedback signal is a liquid-free signal, the empty judgment time starts to be accumulated;

[0046] Step 155: If the empty determination time exceeds the preset empty determination threshold, it is determined that the material container 10 is empty.

[0047] Exemplarily, the non-empty time supply parameter can be: when the container starts to be supplied, the software starts to accumulate time at this time, and the accumulated time at this time is the non-empty time. When the accumulated non-empty time exceeds the non-empty preset threshold, the empty time starts to be accumulated; wherein, the value of the non-empty preset threshold can be 150s~200s.

[0048] The empty determination time parameter may be: when the container starts to be supplied, when the non-empty determination time is accumulated and the liquid detection sensor 12 does not detect a feedback signal, the time begins to be accumulated, that is, the empty determination time is accumulated. When the accumulated empty determination time exceeds a preset empty determination threshold, the container is determined to be empty. The value of the preset empty determination threshold may be 5s to 10s.

[0049] Optionally, as shown in FIG3(a), when the bellows pump 15 starts working to pump the chemical liquid in the material container 10 into the gas-liquid separator 11, at the beginning, when the liquid in the material container 10 has not yet entered the pipe 13 and the gas-liquid separator 11, we do not determine that the container is empty at this time, so it is necessary to set a non-empty judgment time. The function of this supply parameter is to wait for the pump to pump the liquid into the gas-liquid separator 11. When the accumulated non-empty judgment time exceeds the set non-empty judgment preset threshold, that is, when the waiting time for the pump to pump the liquid into the gas-liquid separator 11 is exceeded: if the liquid detection sensor 12 detects liquid, the empty judgment time is reset and the liquid sensor signal is continued to be detected; if the liquid detection sensor 12 has not detected the sensor feedback signal for a period of time, it means that there is no liquid in the gas-liquid separator 11 that continues to enter the supply pipe 13, then the empty judgment time is accumulated. When the empty judgment time exceeds the empty judgment preset threshold, the container is directly determined to be empty.

[0050] Furthermore, after the empty determination process is completed, the supply parameters are reset and the exhaust valve 14 is closed to prepare for the next empty determination operation.

[0051] The emptying is judged by accumulating the supply time. When the waiting time for the pump to draw the liquid into the gas-liquid separator 11 is exceeded, and the liquid detection sensor 12 has not detected the sensor feedback signal for a period of time, it means that no liquid has entered the gas-liquid separator 11. Then, the container can be directly judged to be empty, which improves the efficiency of online empty judgment and saves manpower and material resources.

[0052] In one embodiment, the supply parameters also include: exhaust timeout time; after "if the non-empty judgment time exceeds the non-empty preset threshold and the feedback signal is a liquid-free signal" in step 150, it also includes: step 151 and step 152.

[0053] Step 151: Open the exhaust valve 14 of the gas-liquid separator 11 and accumulate the exhaust timeout time;

[0054] Step 152: If the exhaust timeout period exceeds the exhaust timeout preset threshold, an exhaust timeout alarm signal is sent.

[0055] For example, the exhaust timeout parameter can be: when exhaust valve 14 opens, a time accumulation begins. The accumulated time is the time the exhaust valve 14 is open. When the accumulated time exceeds a preset exhaust timeout threshold, an exhaust timeout alarm is issued. This parameter setting can prevent excessive leakage of chemicals from pipeline 13 through exhaust valve 14 due to a prolonged opening of the valve due to incorrect parameter settings.

[0056] The programmable logic controller can control the opening and closing of the exhaust valve 14 to exhaust gas by obtaining the switching signal of the liquid detection sensor 12. Optionally, as shown in Figure 3(a), when the liquid detection sensor 12 on the gas-liquid separator 11 does not detect liquid, the programmable logic controller controls the opening of the exhaust valve on the gas-liquid separator 11 to exhaust gas, and simultaneously starts counting and accumulating the exhaust time. If the exhaust time exceeds a preset exhaust timeout threshold, an alarm will be issued.

[0057] In one embodiment, the supply parameters also include: the number of times the exhaust valve 14 is opened; after "if the non-empty judgment time exceeds the non-empty preset threshold and the feedback signal is a liquid-free signal" in step 150, it also includes: step 153 and step 154.

[0058] Step 153: Open the exhaust valve 14 of the gas-liquid separator 11 and accumulate the number of times the exhaust valve 14 is opened;

[0059] Step 154 : If the number of times the exhaust valve 14 is opened exceeds the preset exhaust number threshold, it is determined that the material container 10 is empty.

[0060] For example, the exhaust valve 14 opening times supply parameter may be: each time the exhaust valve 14 is opened, the exhaust times are accumulated, and when the accumulated times exceed a preset exhaust times threshold, the container is determined to be empty. The preset exhaust times threshold may be a value of 1 to 2.

[0061] The number of exhaust times can generally be set to 1. The suction pipe in the ton barrel container is a bottom-inserted pipe. Under normal circumstances, if the liquid level in the ton barrel is higher than the bottom-inserted pipe, the liquid medium will not be sucked into the gas pipe 13 when the gas pump sucks liquid because its density is higher than that of the liquid medium. The only possibility that may cause gas in pipe 13 is: the barrel is almost empty, the liquid level is lower than the bottom-inserted pipe mouth, or the pipe mouth is partially exposed to air during the liquid level fluctuation during suction, resulting in gas in pipe 13. Therefore, the empty state can be judged by accumulating the number of times the exhaust valve 14 is opened. In addition to accumulating the empty determination time, the empty state can also be judged by accumulating the number of times the exhaust valve 14 is opened, further improving the efficiency of online empty determination.

[0062] In one embodiment, the fixed liquid level is the horizontal height of the liquid detection sensor 12 on the gas-liquid separator 11; the supply parameter also includes: liquid duration; after step 153, it may specifically include: step 153a, step 153b, and step 153c.

[0063] Step 153a: If the number of times the exhaust valve 14 is opened does not exceed the preset threshold of exhaust times and the feedback signal is a liquid-free signal, repeatedly accumulating the number of times the exhaust valve 14 is opened;

[0064] Step 153b: If the number of times the exhaust valve 14 is opened does not exceed the preset exhaust number threshold and the feedback signal is a liquid presence signal, the liquid detection sensor 12 detects a liquid presence duration at a fixed liquid level.

[0065] Step 153c: If the duration of liquid presence exceeds the preset liquid level threshold, the exhaust valve 14 is closed.

[0066] For example, the liquid presence duration parameter can be: after the exhaust valve 14 is opened and the liquid detection sensor 12 detects liquid, the accumulated time begins. This time is the time the liquid detection sensor 12 detects liquid. When the accumulated time exceeds a preset liquid level threshold, the exhaust valve 14 is closed. This parameter can be used to prevent liquid level fluctuations from falsely triggering the sensor. By delaying valve closure, the liquid level is guaranteed to be above the sensor installation location when the valve closes.

[0067] The liquid detection sensor 12 does not detect any liquid, that is, the feedback signal is a liquid-free signal, indicating that there is no liquid in the gas-liquid separator 11 or the liquid is lower than the installation height of the liquid detection sensor 12 (fixed liquid level). When the air bag pump 15 pumps liquid into the gas-liquid separator 11, the liquid level in the gas-liquid separator 11 slowly increases. The higher the liquid level, the smaller the volume of air in the gas-liquid separator 11 and the larger the volume of liquid. The exhaust valve 14 is set at the top of the gas-liquid separator 11. Opening the exhaust valve 14 allows air to be discharged from the gas-liquid separator 11. When the liquid level is higher than the installation height of the liquid detection sensor 12, the liquid detection sensor 12 will have a feedback signal, which is equivalent to detecting liquid.

[0068] Alternatively, as shown in FIG3( b ), under normal circumstances, when the container is first supplied, the exhaust valve 14 will automatically open once. This is because the bellows pump 15 will also draw air from the pipe 13 into the gas-liquid separator 11 when pumping liquid into the gas-liquid separator 11. At this time, the exhaust valve 14 needs to be opened to exhaust the air. If the liquid sensor detects the presence of liquid, the duration of liquid detected by the liquid detection sensor 12 is accumulated. When it exceeds a preset threshold, the exhaust valve 14 is closed. If the liquid sensor detects the absence of liquid, steps 153 and 154 are repeated, and the valve is opened to repeatedly accumulate the number of times the exhaust valve 14 is opened.

[0069] Entering the formal supply stage, as long as there is enough liquid in the container, the liquid detection sensor 12 will always have a feedback signal. When the air in the container is sucked into the gas-liquid separator 11, the liquid level in the gas-liquid separator 11 will drop. When it drops below the installation position of the liquid sensor (fixed liquid level), the gas-liquid separator 11 will have no feedback signal. At this time, the exhaust valve 14 will open, and the cumulative number of times the exhaust valve 14 is opened is 2. Assuming that the preset threshold value of the exhaust number is set to 1 time, it can be determined that the container is empty.

[0070] In one embodiment, step 153c may specifically include:

[0071] If the duration of liquid presence exceeds the preset threshold value of the liquid level, the exhaust valve 14 is closed after a delay.

[0072] For example, the delayed closing of the exhaust valve 14 is to ensure that the liquid level is really higher than the liquid detection sensor 12, and to avoid errors caused by the liquid level fluctuation falsely triggering the sensor, because the instantaneous detection of the feedback signal does not mean that the liquid level is really higher than the liquid detection sensor 12. The liquid is flowing, and it may be that only the fluctuation of the liquid is detected.

[0073] In one embodiment, the supply parameter is determined by counting cumulatively by a clock circuit.

[0074] For example, a counter is a sequential logic network that counts input pulses. The input signal being counted is the clock pulse of the sequential network, and the count accumulation is achieved by counting the clock pulses. Using a program-controlled clock circuit to count the clock pulses for this purpose enables automated counting, which is highly feasible and low-cost.

[0075] See also Figure 4 , Figure 4 An embodiment of the present application provides an empty detection device for a material supply system, the system including: a material container 10, a gas-liquid separator 11, and a liquid detection sensor 12. The material container 10 is connected to the gas-liquid separator 11 through a pipe 13. The liquid detection sensor 12 is arranged at an exhaust valve 14 near the upper end of the gas-liquid separator 11, and is used to detect whether there is liquid at a fixed liquid level after the material liquid supplied by the material container 10 enters the gas-liquid separator 11; the device includes: an acquisition module 210, an accumulation module 220, and an empty detection module 230.

[0076] The acquisition module 210 is used to obtain the feedback signal of the liquid detection sensor 12;

[0077] The accumulation module 220 is used to accumulate supply parameters during the process of the material container 10 supplying the material liquid to the gas-liquid separator 11;

[0078] The empty determination module 230 is used to determine whether the material container 10 is empty according to the supply parameters and the feedback signal.

[0079] The supply parameters include: non-empty time, empty time; feedback signals include liquid signal and liquid-free signal; the empty detection module 230 can be specifically used for:

[0080] When waiting for the material container 10 to supply the material liquid to the gas-liquid separator 11, the accumulated non-empty time;

[0081] If the non-empty judgment time exceeds the preset threshold value of non-empty judgment and the feedback signal is a liquid signal, the empty judgment time is reset; if the non-empty judgment time exceeds the preset threshold value of non-empty judgment and the feedback signal is a liquid-free signal, the empty judgment time starts to accumulate;

[0082] If the empty determination time exceeds the preset empty determination threshold, it is determined that the material container 10 is empty.

[0083] Optionally, the supply parameter further includes: an exhaust timeout period; the device further includes a timeout alarm module 240, which can be used to:

[0084] Open the exhaust valve 14 of the gas-liquid separator 11 and accumulate the exhaust timeout time;

[0085] If the exhaust timeout exceeds the exhaust timeout preset threshold, an exhaust timeout alarm signal is sent.

[0086] Optionally, the supply parameters further include: the number of times the exhaust valve 14 is opened; the empty determination module 230 can be specifically used to:

[0087] Open the exhaust valve 14 of the gas-liquid separator 11 and accumulate the number of times the exhaust valve 14 is opened;

[0088] If the number of times the exhaust valve 14 is opened exceeds a preset threshold of exhaust times, it is determined that the material container 10 is empty.

[0089] Optionally, the fixed liquid level is the height at which the liquid detection sensor 12 is located on the gas-liquid separator 11; the supply parameter also includes: liquid duration; the device also includes a module 250 for closing the exhaust valve 14, which can be used to:

[0090] If the number of times the exhaust valve 14 is opened does not exceed the preset threshold value of the exhaust number and the feedback signal is a liquid-free signal, the number of times the exhaust valve 14 is opened is repeatedly accumulated;

[0091] If the number of times the exhaust valve 14 is opened does not exceed the preset threshold of exhaust times and the feedback signal is a liquid presence signal, the accumulated liquid detection sensor 12 detects the duration of liquid presence at a fixed liquid level;

[0092] If the liquid presence duration exceeds the preset liquid level threshold, the exhaust valve 14 is closed.

[0093] Optionally, the exhaust valve closing module 250 can be used to:

[0094] If the duration of liquid presence exceeds the preset threshold value of the liquid level, the exhaust valve 14 is closed after a delay.

[0095] Optionally, the supply parameter is determined by counting cumulatively through a clock circuit.

[0096] See also Figure 5 , Figure 53 is a block diagram of an electronic device. The electronic device 300 may include a memory 311, a storage controller 312, a processor 313, a peripheral interface 314, an input and output unit 315, and a display unit 316. It can be understood by those skilled in the art that Figure 5 The structure shown is only for illustration and does not limit the structure of the electronic device 300. For example, the electronic device 300 may further include Figure 5 More or fewer components than shown, or with Figure 5 Different configurations shown.

[0097] The aforementioned memory 311, storage controller 312, processor 313, peripheral interface 314, input / output unit 315, and display unit 316 are electrically connected to each other, either directly or indirectly, to enable data transmission or interaction. For example, these components may be electrically connected to each other via one or more communication buses or signal lines. The aforementioned processor 313 is used to execute the executable modules stored in the memory.

[0098] The memory 311 may be, but is not limited to, a random access memory (RAM), a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), etc. The memory 311 is used to store programs, and the processor 313 executes the programs after receiving an execution instruction. The method executed by the electronic device 300 defined by the process disclosed in any embodiment of the present application can be applied to the processor 313 or implemented by the processor 313.

[0099] The processor 313 may be an integrated circuit chip with signal processing capabilities. The processor 313 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The methods, steps, and logic block diagrams disclosed in the embodiments of the present application may be implemented or executed. The general-purpose processor may be a microprocessor or any conventional processor.

[0100] The peripheral interface 314 couples various input / output devices to the processor 313 and the memory 311. In some embodiments, the peripheral interface 314, the processor 313, and the memory controller 312 can be implemented in a single chip. In other embodiments, they can be implemented in separate chips.

[0101] The input and output unit 315 is used to provide input data to the user. The input and output unit 315 can be, but is not limited to, a mouse and a keyboard.

[0102] The display unit 316 provides an interactive interface (e.g., a user interface) between the electronic device 300 and the user for the user's reference. In this embodiment, the display unit 316 may be a liquid crystal display or a touch display. The liquid crystal display or touch display may display the process of the processor executing the program.

[0103] The electronic device 300 in this embodiment can be used to execute each step in each method provided in the embodiments of the present application.

[0104] In addition, an embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above method embodiment are executed.

[0105] The computer program product of the above method provided in the embodiment of the present application includes a computer-readable storage medium storing program code, and the instructions included in the program code can be used to execute the steps in the above method embodiment. For details, please refer to the above method embodiment, which will not be repeated here.

[0106] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the modules is merely a logical function division. There may be other division methods in actual implementation. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed may be through some communication interfaces, indirect coupling or communication connection of devices or units, which may be electrical, mechanical or other forms. The functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

[0107] It should be noted that if the function is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0108] In this document, relational terms such as first and second, etc. are used merely to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any actual relationship or order between these entities or operations.

[0109] The above description is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, various modifications and variations of the present application are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A method for determining the empty space of a material supply system, characterized in that: The system includes: a material container, a gas-liquid separator, and a liquid detection sensor; the material container and the gas-liquid separator are connected by a pipeline; the liquid detection sensor is arranged near the exhaust valve at the upper end of the gas-liquid separator and is used to detect whether there is liquid at a fixed liquid level after the material liquid supplied by the material container enters the gas-liquid separator; The method comprises: Obtaining feedback signals from liquid detection sensors; In the process of supplying material liquid from the material container to the gas-liquid separator, the supply parameters are accumulated; determining whether the material container is empty according to the supply parameter and the feedback signal; The supply parameters include: non-empty time and empty time; the feedback signal includes liquid signal and no liquid signal; The determining whether the material container is empty according to the supply parameter and the feedback signal includes: While waiting for the material container to supply the material liquid to the gas-liquid separator, the non-empty time is accumulated; If the non-empty judgment time exceeds the non-empty judgment preset threshold and the feedback signal is a liquid signal, the empty judgment time is reset; if the non-empty judgment time exceeds the non-empty judgment preset threshold and the feedback signal is a liquid-free signal, the empty judgment time starts to be accumulated; If the empty judgment time exceeds the preset empty judgment threshold, it is determined that the material container is empty; Wherein, the supply parameters also include: the number of times the exhaust valve is opened; If the non-empty judgment time exceeds the non-empty judgment preset threshold and the feedback signal is a liquid-free signal, the method further includes: Opening the exhaust valve of the gas-liquid separator and accumulating the number of times the exhaust valve is opened; If the exhaust valve is opened more than a preset exhaust valve threshold, it is determined that the material container is empty.

2. The method according to claim 1, characterized in that in, The supply parameters also include: exhaust timeout; If the non-empty judgment time exceeds the non-empty judgment preset threshold and the feedback signal is a liquid-free signal, the method further includes: Open the exhaust valve of the gas-liquid separator and accumulate the exhaust timeout time; If the exhaust timeout period exceeds the exhaust timeout preset threshold, an exhaust timeout alarm signal is sent.

3. The method according to claim 1, characterized in that in, The fixed liquid level is the horizontal height of the liquid detection sensor located on the gas-liquid separator; The supply parameters also include: liquid duration; After the exhaust valve of the gas-liquid separator is opened and the number of exhaust valve openings is accumulated, the method further comprises: If the exhaust valve opening times do not exceed the preset exhaust times threshold and the feedback signal is a liquid-free signal, repeatedly accumulating the exhaust valve opening times; If the number of times the exhaust valve is opened does not exceed the preset threshold of exhaust times and the feedback signal is a liquid presence signal, the cumulative liquid detection sensor detects the liquid presence duration of the fixed liquid level; If the liquid-containing duration exceeds a preset liquid level threshold, the exhaust valve is closed.

4. The method according to claim 3, characterized in that If the liquid-presence duration exceeds a preset liquid level threshold, closing the exhaust valve comprises: If the liquid-containing duration exceeds a preset threshold value of the liquid level, the exhaust valve is closed after a delay.

5. The method according to any one of claims 1 to 4, characterized in that: in, The supply parameters are determined by counting the clock circuit.

6. A device for determining the empty space of a material supply system, characterized in that: The system includes: a material container, a gas-liquid separator, and a liquid detection sensor. The material container and the gas-liquid separator are connected by a pipeline. The liquid detection sensor is arranged near the exhaust valve at the upper end of the gas-liquid separator and is used to detect whether there is liquid at a fixed liquid level after the material liquid supplied by the material container enters the gas-liquid separator. The device includes: An acquisition module, used for acquiring a feedback signal from a liquid detection sensor; The accumulation module is used to accumulate supply parameters during the process of supplying material liquid from the material container to the gas-liquid separator; an empty determination module, configured to determine whether the material container is empty based on the supply parameter and the feedback signal; The supply parameters include: non-empty time and empty time; the feedback signal includes liquid signal and no liquid signal; The empty judgment module is used for: While waiting for the material container to supply the material liquid to the gas-liquid separator, the non-empty time is accumulated; If the non-empty judgment time exceeds the non-empty judgment preset threshold and the feedback signal is the liquid signal, the empty judgment time is reset; if the non-empty judgment time exceeds the non-empty judgment preset threshold and the feedback signal is the liquid-free signal, the empty judgment time starts to be accumulated; If the empty judgment time exceeds the preset empty judgment threshold, the material container is determined to be empty; Wherein, the supply parameters also include: the number of times the exhaust valve is opened; The empty judgment device is also used for: Opening the exhaust valve of the gas-liquid separator and accumulating the number of times the exhaust valve is opened; If the exhaust valve is opened more than a preset exhaust valve threshold, it is determined that the material container is empty.

7. An electronic device, characterized in that: include: A processor and a memory, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the machine-readable instructions are executed by the processor to perform the steps of any one of the methods according to claims 1 to 5.

8. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 5 are executed.

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