Dual layer suction cup control device and method

Abstract

The application discloses a double-layer adsorption bowl control device and method, relates to the field of medical devices, and a vacuum pump is used for maintaining constant negative pressure in a vacuum chamber, and a controller alternately switches a first three-way electromagnetic valve and a second three-way electromagnetic valve, so that alternating adsorption of an inner adsorption bowl and an outer adsorption bowl is realized. The vacuum pump only maintains the target air pressure in the vacuum chamber constant, the air pressure change of the adsorption bowl is realized only by switching of the three-way electromagnetic valve, and the stability of the target air pressure is effectively improved without depending on speed regulation of the vacuum pump; the vacuum pump is in a nearly constant power state, the speed is kept very low, noise is reduced, and energy is saved; the three-way electromagnetic valve only discharges the air pressure in the adsorption bowl, the inner volume of the adsorption bowl is small, noise during pressure relief is small, the vacuum chamber does not need to be relieved of pressure, the air pressure is kept stable, and power consumption is reduced; the inner adsorption bowl is coaxially arranged in the outer adsorption bowl to form a double-layer structure, at least one layer can be kept in an adsorption state in the control process, and the whole adsorption bowl is effectively prevented from falling off.

Description

Technical Field

[0001] This application relates to the field of medical devices, and in particular to a double-layer adsorption bowl control device and method. Background Technology

[0002] Medium-frequency or interferential current therapy devices use adsorption electrodes, which are attached to the surface of the body to introduce current for therapeutic purposes. The adsorption control system typically consists of an adsorption bowl, a vacuum chamber, a pressure sensor, and a vacuum pump, forming a negative pressure adsorption control system. To achieve a massage-like effect during treatment and to prevent local redness and swelling caused by prolonged adsorption, a pressure relief valve is added to the vacuum chamber. Timed pressure release creates a breathing control mechanism, effectively preventing sluggish local blood flow.

[0003] Common breathing control methods generally fall into two categories. Method 1: The pressure relief valve is always open. The pressure in the vacuum chamber is controlled by adjusting the vacuum pump speed. This typically involves three scenarios: 1) The vacuum pump operates at high speed, minimizing the chamber pressure and maximizing the adsorption force of the adsorption bowl; 2) The pump operates at medium speed, resulting in moderate pressure and adsorption force; 3) The pump operates at low speed, maximizing pressure and adsorption force. This cycle of speed adjustments achieves different pressures and adsorption forces, producing the desired breathing effect. However, this method has significant drawbacks: the vacuum pump is constantly in an energized state, leading to unstable target pressure; the pump generates considerable noise at different power levels; and the constantly open pressure relief valve wastes electricity. Option 2: By controlling the pressure relief valve and the target gas pressure, the target gas pressure is first lowered, at which point the pressure relief valve is closed, and the vacuum pump is controlled with the low gas pressure as the target. After stabilizing for a period of time, the target gas pressure is then increased, at which point the pressure relief valve is opened for a period of time, and then closed. This cycle is repeated to obtain a variable adsorption force. Although Option 2 is better than Option 1, if the single-layer adsorption bowl does not fit well and air leakage occurs, the adsorption bowl may still detach when the pressure relief valve is opened.

[0004] Therefore, how to effectively improve the stability of the target air pressure, reduce noise, and effectively prevent the adsorption bowl from falling off are problems that need to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this application is to provide a double-layer adsorption bowl control device and method to solve the problems of unstable target air pressure, high noise, and adsorption bowl detachment.

[0006] To solve the above-mentioned technical problems, this application provides a double-layer adsorption bowl control device, including: an inner layer adsorption bowl, an outer layer adsorption bowl, an inner layer gas path, an outer layer gas path, a first three-way solenoid valve, a second three-way solenoid valve, a vacuum chamber, a vacuum pump, and a controller.

[0007] The inner adsorption bowl is coaxially disposed inside the outer adsorption bowl. The inner adsorption bowl has an electrode inside. The first three-way solenoid valve is connected to the inner adsorption bowl and the vacuum chamber through the inner gas path, and the first three-way solenoid valve is also used to communicate with the outside atmosphere. The second three-way solenoid valve is connected to the outer adsorption bowl and the vacuum chamber through the outer gas path, and the second three-way solenoid valve is also used to communicate with the outside atmosphere. The vacuum pump is connected to the vacuum chamber. The controller is connected to the first three-way solenoid valve, the second three-way solenoid valve and the vacuum pump.

[0008] In one feasible embodiment, both the inner adsorption bowl and the outer adsorption bowl include a bowl body and a flange, the flange being arranged around the open edge of the bowl body, and the extending direction of the flange being perpendicular to the axial direction of the bowl body.

[0009] In one feasible embodiment, a pressure sensor connected to the controller is also included. The pressure sensor is located in the vacuum chamber and is used to monitor the current pressure inside the vacuum chamber in real time.

[0010] In one feasible embodiment, the system further includes a human-machine interface module connected to the controller, the human-machine interface module being used to set control parameters and display the current working status of the double-layer adsorption bowl.

[0011] This application also provides a method for controlling a double-layer adsorption bowl, applied to the aforementioned double-layer adsorption bowl control device, comprising:

[0012] Obtain the target air pressure and control the vacuum pump to adjust the air pressure in the vacuum chamber to the target air pressure;

[0013] Switch the first three-way solenoid valve and the second three-way solenoid valve so that both the inner adsorption bowl and the outer adsorption bowl are connected to the vacuum chamber.

[0014] The first three-way solenoid valve and the second three-way solenoid valve are alternately switched so that the inner adsorption bowl and the outer adsorption bowl are alternately connected to the outside atmosphere; wherein, when the inner adsorption bowl is connected to the outside atmosphere, the outer adsorption bowl is connected to the vacuum chamber; and when the outer adsorption bowl is connected to the outside atmosphere, the inner adsorption bowl is connected to the vacuum chamber.

[0015] In one feasible embodiment, controlling the vacuum pump to regulate the gas pressure in the vacuum chamber to the target gas pressure includes:

[0016] Obtain the current air pressure inside the vacuum chamber as detected by the air pressure sensor;

[0017] Calculate the deviation between the target air pressure and the current air pressure;

[0018] The adjustment amount of the vacuum pump is determined based on the deviation and the PID algorithm formula;

[0019] The speed of the vacuum pump is adjusted according to the adjustment amount until the air pressure in the vacuum chamber is adjusted to the target air pressure.

[0020] In one feasible embodiment, determining the adjustment amount of the vacuum pump based on the deviation and the PID algorithm formula includes:

[0021] If the deviation is greater than the threshold, the switching coefficient of the integral term in the PID algorithm formula is 0;

[0022] If the deviation is less than or equal to the threshold, the switching coefficient of the integral term in the PID algorithm formula is 1;

[0023] The PID algorithm formula is as follows: ;

[0024] in, Let k be the adjustment amount of the vacuum pump at time k. This is the proportional gain coefficient. The deviation at time k, The switching coefficient of the integral term, This is the integral gain coefficient. This is the cumulative deviation from time point 0 to time point k. The sampling period is The differential gain coefficient, This represents the deviation at time k-1.

[0025] In one feasible embodiment, before alternately switching the first three-way solenoid valve and the second three-way solenoid valve, the method further includes:

[0026] The actual air pressure detected by the air pressure sensor after a preset time period is obtained;

[0027] If the absolute value of the difference between the target air pressure and the actual air pressure is less than or equal to a preset value, proceed to the step of alternately switching the first three-way solenoid valve and the second three-way solenoid valve.

[0028] If the absolute value of the difference between the target air pressure and the actual air pressure is greater than a preset value, an airtightness check prompt message is generated.

[0029] In one feasible embodiment, before alternately switching the first three-way solenoid valve and the second three-way solenoid valve, the method further includes:

[0030] Obtain control mode;

[0031] If the control mode is continuous mode, the duration in the continuous mode is read, and the current state of the first three-way solenoid valve and the second three-way solenoid valve is maintained during the duration so that the inner adsorption bowl and the outer adsorption bowl are continuously connected to the vacuum chamber.

[0032] If the control mode is breathing mode, proceed to the step of alternately switching the first three-way solenoid valve and the second three-way solenoid valve.

[0033] In one feasible embodiment, alternately switching the first three-way solenoid valve and the second three-way solenoid valve includes:

[0034] Read the switching frequency and switching sequence in the breathing pattern;

[0035] The first three-way solenoid valve and the second three-way solenoid valve are switched alternately according to the switching sequence and the switching frequency.

[0036] This application provides a double-layer adsorption bowl control device. A vacuum pump maintains a constant negative pressure within the vacuum chamber. The controller alternately switches between a first three-way solenoid valve and a second three-way solenoid valve, so that when the inner adsorption bowl is connected to the outside atmosphere, the outer adsorption bowl is connected to the vacuum chamber; and when the outer adsorption bowl is connected to the outside atmosphere, the inner adsorption bowl is connected to the vacuum chamber, thus achieving alternating adsorption by the inner and outer adsorption bowls. The vacuum pump maintains a constant target pressure within the vacuum chamber, and pressure changes in the adsorption bowls are only achieved through switching the three-way solenoid valves, without relying on vacuum pump speed adjustment, effectively improving the stability of the target pressure. The vacuum pump does not require frequent start-stop or power adjustment; it operates at near constant power, maintaining a very low speed, reducing noise and increasing energy efficiency. The three-way solenoid valves only release pressure within the adsorption bowls, without affecting the pressure within the vacuum chamber. Due to the small volume within the adsorption bowls, the noise during pressure release is also minimal. The inner adsorption bowl is coaxially positioned within the outer adsorption bowl, forming a double-layer structure. During control, at least one layer remains in adsorption, effectively preventing the entire adsorption bowl from detaching and enhancing comfort. In addition, during depressurization, only the inside of the adsorption bowl is connected to the atmosphere, and the vacuum chamber does not need to be depressurized, so the air pressure remains stable, which greatly reduces power consumption.

[0037] The beneficial effects of the double-layer adsorption bowl control method and device provided in this application are as described above. Attached Figure Description

[0038] To more clearly illustrate the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 A structural diagram of a double-layer adsorption bowl control device provided in an embodiment of this application;

[0040] Figure 2 A schematic diagram of air pressure change in a single-layer adsorption bowl provided in an embodiment of this application;

[0041] Figure 3 A schematic diagram of the air pressure change in the inner adsorption bowl of a double-layer adsorption bowl control device provided in this application embodiment;

[0042] Figure 4 A schematic diagram of the air pressure change in the outer adsorption bowl of a double-layer adsorption bowl control device provided in an embodiment of this application;

[0043] Figure 5 A flowchart illustrating a double-layer adsorption bowl control method provided in this application embodiment;

[0044] Figure 6 This is a structural diagram of another double-layer adsorption bowl control device provided in an embodiment of this application.

[0045] The attached diagram is labeled as follows: 1-Inner adsorption bowl, 2-Outer adsorption bowl, 3-Inner gas path, 4-Outer gas path, 5-First three-way solenoid valve, 6-Second three-way solenoid valve, 7-Vacuum chamber, 8-Vacuum pump, 9-Pressure sensor, 10-Electrode. Detailed Implementation

[0046] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0047] The core of this application is to provide a double-layer adsorption bowl control device and method for effectively improving the stability of the target air pressure, reducing noise, and effectively preventing the adsorption bowl from falling off.

[0048] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0049] Figure 1 A structural diagram of a double-layer adsorption bowl control device provided in an embodiment of this application is shown below. Figure 1As shown, the double-layer adsorption bowl control device includes: an inner adsorption bowl 1, an outer adsorption bowl 2, an inner gas path 3, an outer gas path 4, a first three-way solenoid valve 5, a second three-way solenoid valve 6, a vacuum chamber 7, a vacuum pump 8, and a controller. The inner adsorption bowl 1 is coaxially arranged inside the outer adsorption bowl 2. An electrode 10 is provided inside the inner adsorption bowl 1. The first three-way solenoid valve 5 is connected to the inner adsorption bowl 1 and the vacuum chamber 7 through the inner gas path 3, and is also used to communicate with the outside atmosphere. The second three-way solenoid valve 6 is connected to the outer adsorption bowl 2 and the vacuum chamber 7 through the outer gas path 4, and is also used to communicate with the outside atmosphere. The vacuum pump 8 is connected to the vacuum chamber 7. The controller is connected to the first three-way solenoid valve 5, the second three-way solenoid valve 6, and the vacuum pump 8.

[0050] In this embodiment, the inner adsorption bowl 1 is coaxially disposed within the outer adsorption bowl 2 to form a double-layer adsorption bowl structure. An electrode 10 is disposed inside the inner adsorption bowl 1, and the electrode 10 is used for electrostimulation therapy. This embodiment does not limit the shape and structure of the inner adsorption bowl 1 and the outer adsorption bowl 2; specifically, both the inner adsorption bowl 1 and the outer adsorption bowl 2 include a bowl body and a flange. The flange is arranged around the open edge of the bowl body, and the extension direction of the flange is perpendicular to the axial direction of the bowl body. The bowl body forms an adsorption space, and one end of the bowl body is an open structure for contact with the human body surface. The flange is arranged around the open edge of the bowl body to form an annular platform. This flange structure helps to increase the contact area between the adsorption bowl and the human body surface, improve adsorption stability, prevent air leakage, and thus improve the overall adsorption control effect. Furthermore, an adhesive layer can be coated on the contact surface between the flange and the human skin to facilitate adhesion to the human skin surface. The first three-way solenoid valve 5 is connected to the inner adsorption bowl 1 and the vacuum chamber 7 via the inner air passage 3, and can also be connected to the outside atmosphere to regulate the air pressure of the inner adsorption bowl 1; for example Figure 1 In this configuration, port A of the first three-way solenoid valve 5 is connected to the inner adsorption bowl 1, port B of the first three-way solenoid valve 5 is connected to the vacuum chamber 7, and port C of the first three-way solenoid valve 5 is open to the outside atmosphere. The second three-way solenoid valve 6 is connected to the outer adsorption bowl 2 and the vacuum chamber 7 via the outer gas path 4, and can also be open to the outside atmosphere, used to regulate the gas pressure of the outer adsorption bowl 2; for example... Figure 1 In this configuration, port A of the second three-way solenoid valve 6 is connected to the outer adsorption bowl 2, port B of the first three-way solenoid valve 5 is connected to the vacuum chamber 7, and port C of the first three-way solenoid valve 5 is open to the outside atmosphere. Vacuum pump 8 is connected to vacuum chamber 7 and is used to extract gas from vacuum chamber 7 to create a negative pressure environment. Vacuum chamber 7 provides a stable negative pressure source for the inner adsorption bowl 1 and the outer adsorption bowl 2.

[0051] To facilitate understanding, the working principle of the double-layer adsorption bowl control device is described below. The vacuum pump 8 maintains a constant negative pressure within the vacuum chamber 7. Under the control of the controller, the first three-way solenoid valve 5 and the second three-way solenoid valve 6 work alternately to achieve "breathing" adsorption control between the inner adsorption bowl 1 and the outer adsorption bowl 2. That is, when one adsorption bowl needs to be released, the corresponding three-way solenoid valve switches to connect with the atmosphere, releasing the negative pressure within that adsorption bowl. The other adsorption bowl remains connected to the vacuum chamber 7, maintaining the adsorption state and ensuring that the device always adheres to the human body surface, preventing it from falling off.

[0052] Figure 2 This is a schematic diagram of the pressure change in a single-layer adsorption bowl provided in an embodiment of this application, as shown below. Figure 2 Unlike traditional adsorption bowl control devices that regulate pressure changes in the adsorption bowl, this device uses only one adsorption bowl connected to a vacuum chamber. The vacuum chamber is also connected to a vacuum pump and a pressure relief valve. Figure 2 As shown, two target air pressures are set and periodically alternated to achieve a breathing effect. The first target air pressure is -20 kPa to achieve a larger adsorption force of the adsorption bowl, and the second target air pressure is -10 kPa to achieve a smaller adsorption force. Since a single-layer adsorption bowl is used, the absolute value of the second target air pressure cannot be too small. For example, it is not recommended to set the second target air pressure to -5 kPa, as the adsorption bowl may detach due to insufficient adsorption force. It is also impossible to achieve a second target air pressure of 0 kPa. Based on this, the difference between the first and second target air pressures is small, resulting in an insignificant effect of the "breathing" adsorption method.

[0053] Figure 3 This is a schematic diagram illustrating the pressure change of the inner adsorption bowl in a double-layer adsorption bowl control device provided in an embodiment of this application. Figure 4 This is a schematic diagram illustrating the pressure change of the outer adsorption bowl in a double-layer adsorption bowl control device provided in an embodiment of this application. Figure 3 and Figure 4This demonstrates the pressure change of the adsorption bowl in the double-layer adsorption bowl control device of this application. After the vacuum pump 8 adjusts the air pressure in the vacuum chamber 7 to -40 kPa, the first three-way solenoid valve 5 connects the outer adsorption bowl 2 and the vacuum chamber 7, and the second three-way solenoid valve 6 connects the inner adsorption bowl 1 and the vacuum chamber 7. Both adsorption bowls adsorb onto the human body at -40 kPa. Switch the first three-way solenoid valve 5 to connect the inner adsorption bowl 1 to the outside atmosphere, while keeping the outer adsorption bowl 2 connected to the vacuum chamber 7. At this time, the air pressure in the inner adsorption bowl 1 is 0 kPa. After maintaining this for a period of time, switch the second three-way solenoid valve 6 to connect the outer adsorption bowl 2 to the outside atmosphere, and simultaneously switch the first three-way solenoid valve 5 to keep the inner adsorption bowl 1 connected to the vacuum chamber 7. At this time, the air pressure in the inner adsorption bowl 1 is -40 kPa, and the air pressure in the outer adsorption bowl 2 is 0 kPa. After maintaining this for a period of time, switch the first three-way solenoid valve 5 to connect the inner adsorption bowl 1 to the outside atmosphere, and simultaneously switch the second three-way solenoid valve 6 to keep the outer adsorption bowl 2 connected to the vacuum chamber 7. This process is repeated alternately. The double-layer adsorption bowl control device in this application can achieve an adsorption bowl pressure of 0 kPa and a pressure difference of up to 40 kPa, making the "breathing" adsorption method quite effective. Moreover, when adjusting the pressure from -40 kPa to 0 kPa, there is no need to use a pressure relief valve to depressurize the vacuum pump 8, and the pressure in the vacuum chamber 7 can be maintained at -40 kPa.

[0054] This application provides a double-layer adsorption bowl control device. A vacuum pump maintains a constant negative pressure within the vacuum chamber. The controller alternately switches between a first three-way solenoid valve and a second three-way solenoid valve, so that when the inner adsorption bowl is connected to the outside atmosphere, the outer adsorption bowl is connected to the vacuum chamber; and when the outer adsorption bowl is connected to the outside atmosphere, the inner adsorption bowl is connected to the vacuum chamber, thus achieving alternating adsorption by the inner and outer adsorption bowls. The vacuum pump maintains a constant target pressure within the vacuum chamber, and pressure changes in the adsorption bowls are only achieved through switching the three-way solenoid valves, without relying on vacuum pump speed adjustment, effectively improving the stability of the target pressure. The vacuum pump does not require frequent start-stop or power adjustment; it operates at near constant power, maintaining a very low speed, reducing noise and increasing energy efficiency. The three-way solenoid valves only release pressure within the adsorption bowls, without affecting the pressure within the vacuum chamber. Due to the small volume within the adsorption bowls, the noise during pressure release is also minimal. The inner adsorption bowl is coaxially positioned within the outer adsorption bowl, forming a double-layer structure. During control, at least one layer remains in an adsorption state, effectively preventing the entire adsorption bowl from detaching and enhancing comfort. In addition, during depressurization, only the inside of the adsorption bowl is connected to the atmosphere, and the vacuum chamber does not need to be depressurized, so the target gas pressure remains stable, which greatly reduces power consumption.

[0055] Based on the above embodiments, this application embodiment also includes a pressure sensor 9 connected to the controller. The pressure sensor 9 is located in the vacuum chamber 7 and is used to monitor the current pressure inside the vacuum chamber 7 in real time. By setting the pressure sensor 9 to detect the pressure in the vacuum chamber 7 as feedback, it is beneficial for the vacuum pump 8 to accurately adjust the pressure inside the vacuum chamber 7 to the target pressure.

[0056] Based on the above embodiments, this application further includes a human-machine interface module connected to the controller. The human-machine interface module is used to set control parameters and display the current working status of the double-layer adsorption bowl. The human-machine interface module can be a touch screen connected to the controller. Control parameters can include adsorption time, release time, target air pressure, etc., and the current working status of the double-layer adsorption bowl can include adsorption status, release status, air pressure value, and running time, etc. It may also include a one-button start / stop switch connected to the controller, allowing users to easily shut down the device in case of emergencies.

[0057] Figure 5 A flowchart of a double-layer adsorption bowl control method provided in this application embodiment is shown below. Figure 5 As shown, the double-layer adsorption bowl control method includes:

[0058] S10: Obtain the target gas pressure and control the vacuum pump to adjust the gas pressure in the vacuum chamber to the target gas pressure.

[0059] S11: Switch the first three-way solenoid valve and the second three-way solenoid valve so that both the inner adsorption bowl and the outer adsorption bowl are connected to the vacuum chamber.

[0060] S12: Alternately switch the first three-way solenoid valve and the second three-way solenoid valve so that the inner adsorption bowl and the outer adsorption bowl are alternately connected to the outside atmosphere; wherein, when the inner adsorption bowl is connected to the outside atmosphere, the outer adsorption bowl is connected to the vacuum chamber; when the outer adsorption bowl is connected to the outside atmosphere, the inner adsorption bowl is connected to the vacuum chamber.

[0061] In step S10, controlling the vacuum pump 8 to regulate the air pressure in the vacuum chamber 7 to the target air pressure includes: acquiring the current air pressure in the vacuum chamber 7 detected by the air pressure sensor 9; calculating the deviation between the target air pressure and the current air pressure; determining the adjustment amount of the vacuum pump 8 according to the deviation and the PID algorithm formula; and adjusting the speed of the vacuum pump 8 according to the adjustment amount until the air pressure in the vacuum chamber 7 is regulated to the target air pressure.

[0062] The integral part of a conventional PID algorithm is used to eliminate static errors and improve system control accuracy. However, when the target variable changes significantly, such as during startup or shutdown, or when the target air pressure is drastically adjusted, a large deviation is input into the system within a short period, leading to excessive accumulation of integral components. This makes the system output prone to reaching its maximum value and difficult to recover, potentially even causing system oscillations. To address this, this application modifies the conventional PID algorithm by separating the integral part. When the current air pressure deviates significantly from the target air pressure, the integral action is eliminated to prevent reduced system stability due to integral action. When the current air pressure approaches the target air pressure, integral control is introduced to eliminate static errors and improve control accuracy. Specifically, the adjustment of the vacuum pump 8 is determined based on the deviation and the PID algorithm formula, including:

[0063] If the deviation is greater than the threshold m, the switching coefficient of the integral term in the PID algorithm formula is 0; if the deviation is less than or equal to the threshold m, the switching coefficient of the integral term in the PID algorithm formula is 1.

[0064] The PID algorithm formula is: ;

[0065] in, The adjustment amount of vacuum pump 8 at time k. This is the proportional gain coefficient. The deviation at time k, The switching coefficient of the integral term, This is the integral gain coefficient. This is the cumulative deviation from time point 0 to time point k. The sampling period is The differential gain coefficient, This represents the deviation at time k-1.

[0066] In step S12, the first three-way solenoid valve 5 and the second three-way solenoid valve 6 are switched so that both the inner adsorption bowl 1 and the outer adsorption bowl 2 are connected to the vacuum chamber 7, and both the inner adsorption bowl 1 and the outer adsorption bowl 2 are adsorbed onto the human body surface at the target air pressure.

[0067] In step S13, the alternating switching of the first three-way solenoid valve 5 and the second three-way solenoid valve 6 can be specifically as follows: After both adsorption bowls are adsorbed onto the human body at the target air pressure, the first three-way solenoid valve 5 is switched to connect the inner adsorption bowl 1 to the outside atmosphere, while the outer adsorption bowl 2 remains connected to the vacuum chamber 7. At this time, the air pressure inside the inner adsorption bowl 1 is 0 kPa. After maintaining this for a period of time, the second three-way solenoid valve 6 is switched to connect the outer adsorption bowl 2 to the outside atmosphere, while simultaneously switching the first three-way solenoid valve 5 to keep the inner adsorption bowl 1 connected to the vacuum chamber 7. At this time, the air pressure inside the inner adsorption bowl 1 is -40 kPa, and the air pressure inside the outer adsorption bowl 2 is 0 kPa. After maintaining this for a period of time, the first three-way solenoid valve 5 is switched to connect the inner adsorption bowl 1 to the outside atmosphere, while simultaneously switching the second three-way solenoid valve 6 to keep the outer adsorption bowl 2 connected to the vacuum chamber 7. This alternating switching forms a breathing control.

[0068] Before alternating between the first three-way solenoid valve 5 and the second three-way solenoid valve 6, the process includes: acquiring the actual air pressure detected by the air pressure sensor 9 after a preset time period; if the absolute value of the difference between the target air pressure and the actual air pressure is less than or equal to a preset value, proceeding to the step of alternating between the first three-way solenoid valve 5 and the second three-way solenoid valve 6; if the absolute value of the difference between the target air pressure and the actual air pressure is greater than the preset value, generating an airtightness check prompt message. An airtightness check is performed before breathing control to prevent air leakage in the inner air path 3, outer air path 4, and vacuum chamber 7 of the double-layer adsorption bowl control device.

[0069] In addition, before alternating between the first three-way solenoid valve 5 and the second three-way solenoid valve 6, the process includes: acquiring a control mode; if the control mode is a continuous mode, reading the duration in the continuous mode, and maintaining the current state of the first three-way solenoid valve 5 and the second three-way solenoid valve 6 during the duration to keep the inner adsorption bowl 1 and the outer adsorption bowl 2 continuously connected to the vacuum chamber 7; if the control mode is a breathing mode, reading the switching frequency and switching sequence in the breathing mode; and alternating between the first three-way solenoid valve 5 and the second three-way solenoid valve 6 according to the switching sequence and switching frequency. For example, the switching sequence is to switch the first three-way solenoid valve 5 first, and then switch the second three-way solenoid valve 6; the switching frequency can be 15 times / minute, 30 times / minute, 60 times / minute, etc.

[0070] This application provides a method for controlling a double-layer adsorption bowl, applied to the aforementioned double-layer adsorption bowl control device. The method includes: acquiring a target gas pressure and controlling a vacuum pump to adjust the gas pressure inside the vacuum chamber to the target pressure; switching a first three-way solenoid valve and a second three-way solenoid valve to connect both the inner and outer adsorption bowls to the vacuum chamber; alternately switching the first and second three-way solenoid valves to alternately connect the inner and outer adsorption bowls to the outside atmosphere; wherein, when the inner adsorption bowl is connected to the outside atmosphere, the outer adsorption bowl is connected to the vacuum chamber; and when the outer adsorption bowl is connected to the outside atmosphere, the inner adsorption bowl is connected to the vacuum chamber. Traditional control devices use a single-layer adsorption bowl and a pressure relief valve, achieving a breathing effect by controlling the pressure inside the vacuum chamber. Compared to traditional control devices, this application employs a double-layer adsorption bowl and a three-way solenoid valve, offering the following advantages: This application uses a double-layer adsorption bowl, maintaining a constant air pressure inside the vacuum chamber. The first and second three-way solenoid valves are alternately switched, allowing the inner and outer adsorption bowls to alternately connect with the outside atmosphere. For example, when the outer adsorption bowl adsorbs, the inner adsorption bowl is released (connected to the atmosphere), and vice versa. Traditional control devices, using only a single adsorption bowl, cannot directly connect to the atmosphere because they must maintain a low pressure; otherwise, the adsorption bowl will detach, resulting in a weak breathing effect. This application avoids this problem; when the inner adsorption bowl adsorbs, the outer adsorption bowl is directly connected to the atmosphere, allowing the adsorption area to relax as much as possible. Traditional control devices control the vacuum chamber by adjusting the air pressure. When the pressure relief valve is open, the vacuum chamber is directly connected to the atmosphere. In this case, the vacuum pump operates as much as possible to maintain the low pressure, resulting in significant noise. In contrast, the vacuum chamber in this application is not directly connected to the atmosphere (the three-way solenoid valve blocks this connection), ensuring a more stable air pressure within the chamber. This allows the vacuum pump to maintain a relatively constant power output with very low operating noise. Traditional control devices operate under conditions of large power output fluctuations, which reduces the lifespan of the vacuum pump. The vacuum pump in this application has a stable power output and a longer lifespan. This application employs an integral-separated calculation method, modifying the conventional PID algorithm by separating the integral component for control. When the current air pressure deviates significantly from the target air pressure, the integral action is eliminated to prevent reduced system stability due to integral action. When the current air pressure approaches the target air pressure, integral control is introduced to eliminate static errors and improve control accuracy.

[0071] Figure 6 A structural diagram of another double-layer adsorption bowl control device provided in the embodiments of this application is shown below. Figure 6 As shown, the double-layer adsorption bowl control device includes: a memory 20 for storing computer programs;

[0072] The processor 21 is used to execute a computer program to implement the steps of the double-layer adsorption bowl control method as described in the above embodiment.

[0073] The double-layer adsorption bowl control device provided in this embodiment can include, but is not limited to, smartphones, tablets, laptops, or desktop computers.

[0074] The processor 21 may include one or more processing cores, such as a quad-core processor or an octa-core processor. The processor 21 may be implemented using at least one of the following hardware forms: Digital Signal Processor (DSP), Field-Programmable Gate Array (FPGA), or Programmable Logic Array (PLA). The processor 21 may also include a main processor and a coprocessor. The main processor, also known as the Central Processing Unit (CPU), is used to process data in the wake-up state; the coprocessor is a low-power processor used to process data in the standby state. In some embodiments, the processor 21 may integrate a Graphics Processing Unit (GPU), which is responsible for rendering and drawing the content to be displayed on the screen. In some embodiments, the processor 21 may also include an Artificial Intelligence (AI) processor, which handles computational operations related to machine learning.

[0075] The memory 20 may include one or more computer-readable storage media, which may be non-transitory. The memory 20 may also include high-speed random access memory and non-volatile memory, such as one or more disk storage devices or flash memory devices. In this embodiment, the memory 20 is used to store at least the following computer program 201, which, after being loaded and executed by the processor 21, is capable of implementing the relevant steps of the double-layer adsorption bowl control method disclosed in any of the foregoing embodiments. In addition, the resources stored in the memory 20 may also include an operating system 202 and data 203, and the storage method may be temporary or permanent storage. The operating system 202 may include Windows, Unix, Linux, etc. The data 203 may include, but is not limited to, target air pressure.

[0076] In some embodiments, the double-layer adsorption bowl control device may further include a display screen 22, an input / output interface 23, a communication interface 24, a power supply 25, and a communication bus 26.

[0077] Those skilled in the art will understand that Figure 6 The structure shown does not constitute a limitation on the double-layer adsorption bowl control device and may include more or fewer components than shown.

[0078] The dual-layer adsorption bowl control device provided in this application includes a memory and a processor. When the processor executes the program stored in the memory, it can implement the following methods: acquiring a target air pressure and controlling a vacuum pump to regulate the air pressure in the vacuum chamber to the target air pressure; switching a first three-way solenoid valve and a second three-way solenoid valve so that both the inner and outer adsorption bowls are connected to the vacuum chamber; alternately switching the first three-way solenoid valve and the second three-way solenoid valve so that the inner and outer adsorption bowls are alternately connected to the outside atmosphere; wherein, when the inner adsorption bowl is connected to the outside atmosphere, the outer adsorption bowl is connected to the vacuum chamber; when the outer adsorption bowl is connected to the outside atmosphere, the inner adsorption bowl is connected to the vacuum chamber.

[0079] Finally, this application also provides an embodiment corresponding to a computer-readable storage medium. The computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps described in the double-layer adsorption bowl control method of the above-described method embodiment.

[0080] It is understood that if the methods in the above embodiments are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and executes all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0081] The foregoing has provided a detailed description of a double-layer adsorption bowl control device and method provided in this application. The various embodiments in the specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple; relevant parts can be referred to in the method section. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

[0082] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A dual-layered adsorption bowl control device, characterized by, It comprises: The inner adsorption bowl (1) is coaxially arranged in the outer adsorption bowl (2), the inner adsorption bowl (1) is internally provided with an electrode (10), the first three-way electromagnetic valve (5) is connected with the inner adsorption bowl (1) and the vacuum chamber (7) through the inner gas path (3), and the first three-way electromagnetic valve (5) is also used for communicating with the external atmosphere, the second three-way electromagnetic valve (6) is connected with the outer adsorption bowl (2) and the vacuum chamber (7) through the outer gas path (4), and the second three-way electromagnetic valve (6) is also used for communicating with the external atmosphere, the vacuum pump (8) is connected with the vacuum chamber (7), and the controller is connected with the first three-way electromagnetic valve (5), the second three-way electromagnetic valve (6) and the vacuum pump (8). The inner adsorption bowl (1) and the outer adsorption bowl (2) both comprise a bowl body and a flange, the flange is arranged along the open edge of the bowl body, and the extension direction of the flange is perpendicular to the axial direction of the bowl body.

2. The dual-layered sump bowl control device of claim 1, wherein, It also comprises an air pressure sensor (9) connected with the controller, the air pressure sensor (9) is arranged in the vacuum chamber (7) and is used for monitoring the current air pressure in the vacuum chamber (7) in real time.

3. The dual-layered sump bowl control device of claim 1, wherein, It also comprises a man-machine interaction module connected with the controller, and the man-machine interaction module is used for setting control parameters and displaying the current working state of the double-layer adsorption bowl.

4. The dual-layered sump bowl control device of claim 1, wherein, The double-layer adsorption bowl control device is applied to any one of claims 1 to 4, comprising:

5. A method of controlling a dual-layered adsorption bowl, characterized by, Obtaining a target air pressure and controlling the vacuum pump (8) to adjust the air pressure in the vacuum chamber (7) to the target air pressure; Switching the first three-way electromagnetic valve (5) and the second three-way electromagnetic valve (6) to make the inner adsorption bowl (1) and the outer adsorption bowl (2) both communicate with the vacuum chamber (7); Alternately switching the first three-way electromagnetic valve (5) and the second three-way electromagnetic valve (6) to make the inner adsorption bowl (1) and the outer adsorption bowl (2) alternately communicate with the external atmosphere; wherein, when the inner adsorption bowl (1) communicates with the external atmosphere, the outer adsorption bowl (2) communicates with the vacuum chamber (7); when the outer adsorption bowl (2) communicates with the external atmosphere, the inner adsorption bowl (1) communicates with the vacuum chamber (7). Controlling the vacuum pump (8) to adjust the air pressure in the vacuum chamber (7) to the target air pressure, comprising:

6. The dual-layered adsorption bowl control method of claim 5, wherein, Obtaining the current air pressure in the vacuum chamber (7) detected by the air pressure sensor (9); Calculating the deviation between the target air pressure and the current air pressure; Determining the adjustment amount of the vacuum pump (8) according to the deviation and the PID algorithm formula; According to the adjustment amount, the speed of the vacuum pump (8) is adjusted until the air pressure in the vacuum chamber (7) is adjusted to the target air pressure. Determining the adjustment amount of the vacuum pump (8) according to the deviation and the PID algorithm formula, comprising:

7. The dual-layered adsorption bowl control method of claim 6, wherein, ​ If the deviation is greater than a threshold value, an integral term in a PID algorithm formula is opened with a relationship number of 0; If the deviation is less than or equal to a threshold value, an integral term in a PID algorithm formula is opened with a relationship number of 1; The PID algorithm formula is: ; wherein, is the adjustment amount of the vacuum pump (8) at time point k, is a proportional gain coefficient, is the deviation at time point k, is an opening coefficient of the integral term, is an integral gain coefficient, is the deviation accumulated from time point 0 to time point k, is a sampling period, is a differential gain coefficient, is the deviation at time point k-1.

8. The dual-layered adsorption bowl control method of claim 6, wherein, Before alternately switching the first three-way electromagnetic valve (5) and the second three-way electromagnetic valve (6), further comprising: Obtaining the actual air pressure detected by the air pressure sensor (9) after a preset time period; If the absolute value of the difference between the target air pressure and the actual air pressure is less than or equal to a preset value, entering the step of alternately switching the first three-way electromagnetic valve (5) and the second three-way electromagnetic valve (6); If the absolute value of the difference between the target air pressure and the actual air pressure is greater than a preset value, generating a prompt information of air tightness check.

9. The dual-layered adsorption bowl control method of claim 5, wherein, Before alternately switching the first three-way electromagnetic valve (5) and the second three-way electromagnetic valve (6), further comprising: Obtaining a control mode; If the control mode is a continuous mode, reading a duration time in the continuous mode, and maintaining the current state of the first three-way electromagnetic valve (5) and the second three-way electromagnetic valve (6) in the duration time, so that the inner layer adsorption bowl (1) and the outer layer adsorption bowl (2) are continuously communicated with the vacuum chamber (7); If the control mode is a breathing mode, entering the step of alternately switching the first three-way electromagnetic valve (5) and the second three-way electromagnetic valve (6).

10. The dual-layered adsorbing bowl control method according to claim 9, wherein, Alternately switching the first three-way electromagnetic valve (5) and the second three-way electromagnetic valve (6) comprises: Reading a switching frequency and a switching sequence in the breathing mode; According to the switching sequence and the switching frequency, alternately switching the first three-way electromagnetic valve (5) and the second three-way electromagnetic valve (6).

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