Control system and method of high-frequency jet breathing machine

Abstract

The invention relates to the technical field of medical equipment, and discloses a control system and method for a high-frequency jet breathing machine, and the control system comprises an oxygen mixing control module which is used for controlling the air conveyed by an air source and the oxygen conveyed by an oxygen source to be mixed in an oxygen mixing container; the mixed oxygen conveying control module is used for conveying the mixed gas to the high-frequency unit container and the constant-frequency unit container respectively; the double-frequency gas path control module is used for generating high-frequency mixed gas in a first preset pressure value range and / or constant-frequency mixed gas in a second preset pressure value range, and conveying the high-frequency mixed gas and / or the constant-frequency mixed gas to the jet orifice; and the jet orifice pressure control module is used for controlling the jet orifice to output the target mixed gas meeting the target pressure value. By arranging the two unit containers, fluctuation of input pressure is reduced, so that mixed gas output from the rear end is stabilized, and clinical requirements of accurate pressure control are met by distinguishing a gas input control strategy of a high-frequency unit and a constant-frequency unit.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a control system and method for a high-frequency jet ventilator. Background Art

[0002] In modern clinical medicine, as an effective means of artificially replacing the spontaneous ventilation function, ventilators have been widely used in respiratory failure caused by various reasons, anesthesia respiratory management during major surgery, respiratory support therapy and emergency resuscitation, and they occupy a very important position in the field of modern medicine. Ventilators are a vital medical device that can prevent and treat respiratory failure, reduce complications, and save and prolong patients' lives.

[0003] As a branch of ventilators, high-frequency jet ventilator also has a wide range of applications. High-frequency jet ventilation has the characteristics of small tidal volume, low airway pressure, suitable for open airway, and little interference with circulatory function. It is widely used in anesthesia respiratory therapy, etc. It is currently the most commonly used ventilation method in endoscopic interventional treatment.

[0004] However, the current high-frequency jet ventilator control system has a large gas flow output, which in turn causes fluctuations in input pressure. Input pressure fluctuations can lead to unstable back-end pressure control. At the same time, the high-frequency and normal-frequency units share the input gas, but their different control strategies will cause mutual interference. Summary of the invention

[0005] In view of this, the present invention provides a control system and method for a high-frequency jet ventilator to solve the problem that the current high-frequency jet ventilator control system cannot meet the clinical needs of precise pressure control.

[0006] In a first aspect, the present invention provides a control system for a high-frequency jet ventilator, the high-frequency jet ventilator comprising an air source, an oxygen source, an oxygen mixing container, a high-frequency unit container, a normal frequency unit container and a jet port;

[0007] The control system includes:

[0008] An oxygen mixing control module is used to control the mixing of air delivered by an air source and oxygen delivered by an oxygen source in an oxygen mixing container to generate a mixed gas with a preset pressure value;

[0009] The mixed oxygen delivery control module is used to deliver the mixed gas to the high-frequency unit container and the normal frequency unit container respectively, and the mixed oxygen delivery module also includes a high-frequency unit container pressure sensor electrically connected to the high-frequency unit container respectively, and a normal frequency unit container pressure sensor electrically connected to the normal frequency unit container;

[0010] A dual-frequency gas circuit control module, used to generate a high-frequency mixed gas within a first preset pressure value range and / or a normal-frequency mixed gas within a second preset pressure value range, and to deliver the high-frequency mixed gas and / or the normal-frequency mixed gas to the injection port;

[0011] The injection port pressure control module is used to control the injection port to output a target mixed gas that meets a target pressure value.

[0012] The control system of the high-frequency jet ventilator provided in the embodiment of the present invention can control the mixing of the air source and the oxygen source in the oxygen mixing container through the oxygen mixing control module to generate a mixed gas with a preset pressure value. The oxygen mixing delivery control module delivers the mixed gas to the high-frequency unit container and the normal frequency unit container respectively. Through the setting of the two unit containers, the fluctuation of the input pressure is reduced to stabilize the pressure of the mixed gas output at the rear end. By distinguishing the control strategy of the gas input of the high-frequency and normal frequency units, the clinical needs of precise pressure control are met.

[0013] In an optional embodiment, the oxygen mixing control module includes an air source control unit and an oxygen source passage unit;

[0014] An air source control unit, comprising an air source pressure sensor and an air control solenoid valve, the air source control unit is used to control the air source to enter the oxygen mixing container by adjusting the opening of the air control solenoid valve;

[0015] The oxygen gas source passage unit includes an oxygen gas source pressure sensor and an oxygen control solenoid valve. The oxygen gas source passage unit is used to control the oxygen gas source to enter the oxygen mixing container by adjusting the opening of the oxygen control solenoid valve.

[0016] The control system of the high-frequency jet ventilator provided in the embodiment of the present invention can accurately control the flow of air and oxygen into the oxygen mixing container by adjusting the opening of the air control solenoid valve and the oxygen control solenoid valve respectively, thereby ensuring that the mixed gas has a preset oxygen concentration and pressure value. This precise control can meet the different needs of different patients for mixed gas. In addition, since the control of the air source and the oxygen source is independent, the system can also respond to input instructions more quickly.

[0017] In an optional embodiment, the mixed oxygen delivery control module further includes:

[0018] A high-frequency unit container control solenoid valve electrically connected to the high-frequency unit container is used to adjust the opening of the high-frequency unit container control solenoid valve so that the pressure value of the high-frequency mixed gas placed in the high-frequency unit container is within a preset range;

[0019] The constant frequency unit container control solenoid valve electrically connected to the constant frequency unit container is used to adjust the opening of the constant frequency unit container control solenoid valve so that the pressure value of the constant frequency mixed gas placed in the constant frequency unit container is within a preset range.

[0020] The control system of the high-frequency jet ventilator provided in the embodiment of the present invention can accurately control the pressure values ​​of the high-frequency mixed gas in the high-frequency unit container and the normal-frequency mixed gas in the normal-frequency unit container by respectively adjusting the openings of the high-frequency unit container control solenoid valve and the normal-frequency unit container control solenoid valve, thereby stabilizing the pressure of the mixed gas output at the back end to meet the clinical needs of precise pressure control and keep it within the preset pressure range.

[0021] In an optional embodiment, the dual-frequency gas circuit control module includes a high-frequency gas circuit control unit and a normal-frequency gas circuit control unit;

[0022] A high-frequency gas circuit control unit, used for generating a high-frequency mixed gas within a first preset pressure value range, the high-frequency gas circuit control unit comprising a high-frequency unit control solenoid valve and a high-frequency control pressure sensor;

[0023] A constant frequency gas circuit control unit, used for generating a constant frequency mixed gas within a second preset pressure value range, the constant frequency gas circuit control unit comprising a constant frequency unit control solenoid valve and a constant frequency control pressure sensor;

[0024] And the first preset pressure value range and the second preset pressure value range are determined based on the target pressure value.

[0025] The control system of the high-frequency jet ventilator provided by the embodiment of the present invention, the high-frequency gas circuit control unit and the normal-frequency gas circuit control unit are respectively responsible for generating and controlling the pressure values ​​of the high-frequency mixed gas and the normal-frequency mixed gas, and the independent control method enables the system to more accurately meet the different requirements of the high-frequency and normal-frequency ventilation modes, avoiding mutual interference between the two ventilation modes. In addition, the preset pressure value range of the high-frequency and normal-frequency mixed gases is determined by the target pressure value set by the user, so the system can provide more personalized mixed gas support according to the actual needs and clinical goals of the patient.

[0026] In an optional implementation, the oxygen mixing control module further includes:

[0027] The oxygen concentration sensor electrically connected to the oxygen mixing container is used to detect the oxygen concentration of the mixed gas so that the oxygen concentration is a preset value.

[0028] The control system of the high-frequency jet ventilator provided by the embodiment of the present invention, the oxygen concentration sensor can monitor the oxygen concentration of the mixed gas in the oxygen mixing container in real time, and ensure that the oxygen concentration is maintained within the preset value range, so as to ensure that the oxygen concentration is accurately controlled according to clinical needs, improve the treatment effect and the patient's comfort. At the same time, by accurately adjusting the input amount, the system can reduce energy consumption while ensuring the treatment effect, and improve energy utilization efficiency.

[0029] In a second aspect, the present invention provides a control method for a high-frequency jet ventilator, which is applied to the control system of the high-frequency jet ventilator in the first aspect, and the method comprises:

[0030] Obtain target data of a target mixed gas output by the high-frequency jet ventilator, the target data including a target gas type, a target pressure, and a target oxygen concentration;

[0031] Acquire target pressure sensor data corresponding to the target gas type and oxygen concentration sensor data of the oxygen mixing container, and calculate a first difference between the target pressure sensor data and the target pressure and a second difference between the oxygen concentration sensor data and the target oxygen concentration;

[0032] The opening of each solenoid valve is adjusted based on the first difference and the second difference so that the mixed gas output by the high-frequency jet ventilator meets the target data.

[0033] The control method of the high-frequency jet ventilator provided by the embodiment of the present invention can accurately calculate the first difference and the second difference by acquiring the target data of the target mixed gas in real time, including the target gas type, target pressure and target oxygen concentration, and comparing them with the actual operation data. Based on these deviation values, the opening of each solenoid valve is adjusted to adjust the gas composition and pressure of the mixed gas to meet the target data. This real-time feedback and adjustment mechanism improves the accuracy and response speed of the control.

[0034] In an optional embodiment, when the target gas type is a constant frequency mixed gas, obtaining target pressure sensor data corresponding to the target gas type and oxygen concentration sensor data of the oxygen mixing container, and calculating a first difference between the target pressure sensor data and the target pressure and a second difference between the oxygen concentration sensor data and the target oxygen concentration, includes:

[0035] Acquire a first constant frequency pressure of a constant frequency control pressure sensor and a second constant frequency pressure of a constant frequency unit container pressure sensor;

[0036] The first constant frequency difference value and the second constant frequency difference value between the first constant frequency pressure and the second constant frequency pressure and the target pressure are calculated respectively.

[0037] The control method of the high-frequency jet ventilator provided in the embodiment of the present invention obtains the data of the constant frequency control pressure sensor and the constant frequency unit container pressure sensor respectively to more accurately obtain the pressure change of the constant frequency mixed gas during the delivery process, and adjusts the opening of the solenoid valve based on the first constant frequency difference and the second constant frequency difference, which helps to timely detect and correct pressure fluctuations, and can also avoid the problem of unstable back-end pressure control caused by pressure fluctuations to a certain extent, thereby maintaining stable operation of the system.

[0038] In an optional embodiment, when the target gas type is a high-frequency mixed gas, the acquiring of target pressure sensor data corresponding to the target gas type and oxygen concentration sensor data of the oxygen mixing container, and calculating a first difference between the target pressure sensor data and the target pressure and a second difference between the oxygen concentration sensor data and the target oxygen concentration, includes:

[0039] Acquire a first high-frequency pressure of a high-frequency control pressure sensor and a second high-frequency pressure of a high-frequency unit container pressure sensor;

[0040] A first high frequency difference value and a second high frequency difference value between the first high frequency pressure and the second high frequency pressure and the target pressure are calculated respectively.

[0041] The control method of the high-frequency jet ventilator provided in the embodiment of the present invention obtains the data of the high-frequency control pressure sensor and the high-frequency unit container pressure sensor respectively to more accurately obtain the pressure change of the high-frequency mixed gas during the delivery process, and adjusts the opening of the solenoid valve based on the first high-frequency difference and the second high-frequency difference. It helps to timely detect and correct pressure fluctuations, and can also avoid the problem of unstable back-end pressure control caused by pressure fluctuations to a certain extent, thereby maintaining stable operation of the system.

[0042] In an optional embodiment, adjusting the opening of each solenoid valve based on the first difference and the second difference so that the mixed gas output by the high-frequency jet ventilator meets the target data includes:

[0043] When the first constant frequency difference and / or the second constant frequency difference are positive numbers, the duty cycle signal of the constant frequency unit control solenoid valve and / or the constant frequency unit container control solenoid valve is reduced according to the difference ratio until the first constant frequency difference and the second constant frequency difference are both 0;

[0044] When the first constant frequency difference and / or the second constant frequency difference is negative, the duty cycle signal of the constant frequency unit control solenoid valve and / or the constant frequency unit container control solenoid valve is increased according to the difference ratio until the first constant frequency difference and the second constant frequency difference are both 0.

[0045] The control method of the high-frequency jet ventilator provided in an embodiment of the present invention calculates in real time the first constant frequency pressure and the first constant frequency difference and the second constant frequency difference between the second constant frequency pressure and the target pressure, and dynamically adjusts the duty cycle signal of the solenoid valve according to the positive and negative conditions of these differences until the difference is 0, so as to ensure that the output mixed gas pressure is accurately controlled within the target range.

[0046] In an optional embodiment, adjusting the opening of each solenoid valve based on the first difference and the second difference so that the mixed gas output by the high-frequency jet ventilator meets the target data includes:

[0047] When the first high-frequency difference and / or the second high-frequency difference are positive numbers, the duty cycle signal of the high-frequency unit control solenoid valve and / or the high-frequency unit container control solenoid valve is reduced according to the difference ratio until the first high-frequency difference and the second high-frequency difference are both 0;

[0048] When the first high frequency difference and / or the second high frequency difference is negative, the duty cycle signal of the high frequency unit control solenoid valve and / or the high frequency unit container control solenoid valve is increased according to the difference ratio until the first high frequency difference and the second high frequency difference are both 0.

[0049] The control method of the high-frequency jet ventilator provided in an embodiment of the present invention calculates in real time the first high-frequency pressure and the first high-frequency difference and the second high-frequency difference between the second high-frequency pressure and the target pressure, and dynamically adjusts the duty cycle signal of the solenoid valve according to the positive and negative conditions of these differences until the difference is 0, so as to ensure that the output mixed gas pressure is accurately controlled within the target range.

[0050] In a third aspect, the present invention provides a computer device, comprising: a memory and a processor, the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the control method of the high-frequency jet ventilator of the second aspect or any corresponding embodiment thereof by executing the computer instructions.

[0051] In a fourth aspect, the present invention provides a computer-readable storage medium having computer instructions stored thereon, the computer instructions being used to enable a computer to execute the control method for a high-frequency jet ventilator of the second aspect or any corresponding embodiment thereof.

[0052] In a fifth aspect, the present invention provides a computer program product, comprising computer instructions for causing a computer to execute the control method for a high-frequency jet ventilator according to the second aspect or any corresponding embodiment thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0054] Figure 1 This is a schematic diagram of the control system architecture of the current high-frequency jet ventilator;

[0055] Figure 2 is a schematic diagram of a control system architecture of a high-frequency jet ventilator according to an embodiment of the present invention;

[0056] Figure 3 is a flow chart of a control method of a high-frequency jet ventilator according to an embodiment of the present invention;

[0057] Figure 4 It is a schematic diagram of the hardware structure of a computer device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0059] The current high-frequency jet ventilator control system block diagram is as follows Figure 1 As shown, it includes: an air source and an oxygen source, an air source pressure sensor 1, an oxygen source pressure sensor 2, an air source control solenoid valve 6, an oxygen source control solenoid valve 7, an oxygen mixing container, an oxygen concentration sensor 10, a high-frequency unit control solenoid valve 8 and a high-frequency control pressure sensor 3, a normal frequency unit control solenoid valve 9, a normal frequency control pressure sensor 4 and an airway pressure sensor 5.

[0060] When the required mixed gas type is high frequency superimposed on normal frequency, the openings of the air source control solenoid valve 6 and the oxygen source control solenoid valve 7 are controlled respectively according to the set oxygen concentration ratio and the monitoring value of the oxygen concentration sensor, and the mixed oxygen container is filled with mixed oxygen of a certain pressure; the two independent units of high frequency and normal frequency use the same mixed oxygen, and control the openings of the corresponding solenoid valves according to their respective pressure sensors, output the control pressure, and operate in a mutually superimposed manner to form a positive end-expiratory pressure and a larger tidal volume.

[0061] However, this existing control system has the following problems:

[0062] Jet ventilation is different from other ventilations and is suitable for respiratory systems that are completely open to the surrounding atmosphere. This will result in a large gas flow output, which will cause fluctuations in input pressure. Input pressure fluctuations will lead to unstable back-end pressure control. In addition, the high-frequency and normal-frequency units share the same input, and their different control strategies will also cause mutual interference.

[0063] Therefore, improvements need to be made to the above-mentioned problems to meet the clinical needs of precise pressure control.

[0064] The embodiment of the present invention provides a control system and method for a high-frequency jet ventilator, which reduces the fluctuation of the input pressure by adding a high-frequency unit container and a normal-frequency unit container and corresponding pressure sensors, thereby stabilizing the pressure of the mixed gas output at the rear end, and meets the clinical needs of precise pressure control by distinguishing the control strategies of the gas input of the high-frequency and normal-frequency units.

[0065] According to an embodiment of the present invention, a control system embodiment of a high-frequency jet ventilator is provided, wherein the high-frequency jet ventilator comprises an air source, an oxygen source, an oxygen mixing container, a high-frequency unit container, a normal frequency unit container, and a jet port;

[0066] The control system includes:

[0067] An oxygen mixing control module is used to control the mixing of air delivered by an air source and oxygen delivered by an oxygen source in an oxygen mixing container to generate a mixed gas with a preset pressure value;

[0068] The mixed oxygen delivery control module is used to deliver the mixed gas to the high-frequency unit container and the normal frequency unit container respectively. The mixed oxygen delivery module also includes a high-frequency unit container pressure sensor 13 electrically connected to the high-frequency unit container respectively, and a normal frequency unit container pressure sensor 14 electrically connected to the normal frequency unit container;

[0069] A dual-frequency gas circuit control module, used to generate a high-frequency mixed gas within a first preset pressure value range and / or a normal-frequency mixed gas within a second preset pressure value range, and to deliver the high-frequency mixed gas and / or the normal-frequency mixed gas to the injection port;

[0070] The injection port pressure control module is used to control the injection port to output a target mixed gas that meets a target pressure value.

[0071] The framework of the control system is as follows Figure 2As shown, the control system is divided into four levels and corresponds to four modules respectively: the first level is an oxygen mixing control module, which is used to control the air source and the oxygen source to be placed in the oxygen mixing container for mixing to generate a mixed gas with a preset pressure value; the second level is an oxygen mixing delivery control module, which is used to deliver the mixed gas to the high-frequency unit container and the normal-frequency unit container respectively; the third level is a dual-frequency gas path control module, which is used to generate a high-frequency mixed gas within a first preset pressure value range and / or a normal-frequency mixed gas within a second preset pressure value range, and deliver the high-frequency mixed gas and / or the normal-frequency mixed gas to the injection port; the fourth level is an injection port pressure control module, which is used to control the injection port to output a target mixed gas that meets the target pressure value.

[0072] In some optional embodiments, the oxygen mixing control module includes an air source control unit and an oxygen source passage unit;

[0073] An air source control unit, comprising an air source pressure sensor 1 and an air source control solenoid valve 6, the air source control unit is used to control the air source to enter the oxygen mixing container by adjusting the opening of the air control solenoid valve;

[0074] The oxygen gas source passage unit includes an oxygen gas source pressure sensor 2 and an oxygen gas source control solenoid valve 7. The oxygen gas source passage unit is used to control the oxygen gas source to enter the oxygen mixing container by adjusting the opening of the oxygen control solenoid valve.

[0075] Specifically, the difference between the pressure values ​​of the air source pressure sensor 1 and the oxygen source pressure sensor 2 and the preset pressure values ​​is calculated to adjust the openings of the air source control solenoid valve 6 and the oxygen source control solenoid valve 7 .

[0076] In some optional embodiments, the oxygen mixing control module further includes:

[0077] The oxygen concentration sensor electrically connected to the oxygen mixing container is used to detect the oxygen concentration of the mixed gas so that the oxygen concentration is a preset value.

[0078] If the preset oxygen concentration is X and the total flow rate of the mixed oxygen delivery control module is flow, the air flow rate flow_air of the air source control solenoid valve 6 and the oxygen flow rate flow_O of the oxygen source control solenoid valve 7 are calculated according to the formula 2 , the formula is: flow_air / flow_O 2 =(1-X) / (X–0.21) and flow=flow_air+flow_O 2 .

[0079] Then, the difference between the oxygen concentration sensor and the preset oxygen concentration X is calculated, and the openings of the air source control solenoid valve 6 and the oxygen source control solenoid valve 7 are adjusted so that the oxygen concentration is the preset oxygen concentration X.

[0080] In some optional embodiments, the mixed oxygen delivery control module further includes:

[0081] A high-frequency unit container control solenoid valve 11 electrically connected to the high-frequency unit container is used to adjust the opening of the high-frequency unit container control solenoid valve 11 so that the pressure value of the high-frequency mixed gas placed in the high-frequency unit container is within a preset range;

[0082] The constant frequency unit container control solenoid valve 12 electrically connected to the constant frequency unit container is used to adjust the opening of the constant frequency unit container control solenoid valve 12 so that the pressure value of the constant frequency mixed gas placed in the constant frequency unit container is within a preset range.

[0083] By obtaining the second high-frequency pressure of the high-frequency unit container pressure sensor 13 and the target pressure preset by the user, and calculating the second high-frequency difference between the second high-frequency pressure and the target pressure, the opening of the high-frequency unit container control solenoid valve 11 is adjusted based on the difference. When the second high-frequency difference is a positive number, the duty cycle signal of the high-frequency unit container control solenoid valve 11 is reduced according to the difference ratio until the second high-frequency difference is 0; when the second high-frequency difference is a negative number, the duty cycle signal of the high-frequency unit container control solenoid valve 11 is increased according to the difference ratio until the second high-frequency difference is 0.

[0084] By obtaining the second constant frequency pressure of the constant frequency unit container pressure sensor 14 and the target pressure preset by the user, and calculating the second constant frequency difference between the second constant frequency pressure and the target pressure, the opening of the constant frequency unit container control solenoid valve 12 is adjusted based on the difference. When the second constant frequency difference is a positive number, the duty cycle signal of the constant frequency unit container control solenoid valve 12 is reduced according to the difference ratio until the second constant frequency difference is 0; when the second constant frequency difference is a negative number, the duty cycle signal of the constant frequency unit container control solenoid valve 12 is increased according to the difference ratio until the second constant frequency difference is 0.

[0085] In some optional embodiments, the dual-frequency gas circuit control module includes a high-frequency gas circuit control unit and a normal-frequency gas circuit control unit;

[0086] A high-frequency gas circuit control unit, used for generating a high-frequency mixed gas within a first preset pressure value range, the high-frequency gas circuit control unit comprising a high-frequency unit control solenoid valve 8 and a high-frequency control pressure sensor 3;

[0087] A constant frequency gas circuit control unit, used for generating a constant frequency mixed gas within a second preset pressure value range, the constant frequency gas circuit control unit comprising a constant frequency unit control solenoid valve 9 and a constant frequency control pressure sensor 4;

[0088] And the first preset pressure value range and the second preset pressure value range are determined based on the target pressure value.

[0089] By obtaining the first high-frequency pressure of the high-frequency control pressure sensor 3 and the target pressure preset by the user, and calculating the first high-frequency difference between the first high-frequency pressure and the target pressure, the opening of the high-frequency unit control solenoid valve 8 is adjusted based on the difference. When the first high-frequency difference is a positive number, the duty cycle signal of the high-frequency unit control solenoid valve 8 is reduced according to the difference ratio until the first high-frequency difference is 0; when the first high-frequency difference is a negative number, the duty cycle signal of the high-frequency unit control solenoid valve 8 is increased according to the difference ratio until the first high-frequency difference is 0.

[0090] By obtaining the first constant frequency pressure of the constant frequency control pressure sensor 4 and the target pressure preset by the user, and calculating the first constant frequency difference between the first constant frequency pressure and the target pressure, the opening of the constant frequency unit control solenoid valve 9 is adjusted based on the difference. When the first constant frequency difference is a positive number, the duty cycle signal of the constant frequency unit control solenoid valve 9 is reduced according to the difference ratio until the first constant frequency difference is 0; when the first constant frequency difference is a negative number, the duty cycle signal of the constant frequency unit control solenoid valve 9 is increased according to the difference ratio until the first constant frequency difference is 0.

[0091] Optionally, the duty cycle signal of each solenoid valve adjusted proportionally is determined by querying a default curve and considering the offset between an actual working pressure point and a working pressure point of the default curve.

[0092] The overall control logic of the control system is as follows: the high-frequency injection pressure and / or the normal-frequency injection pressure set by the user is obtained as the target pressure, and a first preset pressure value range of the high-frequency mixed gas and a second preset pressure value range of the normal-frequency mixed gas are determined according to the target pressure; the pressure of the mixed oxygen delivery control module can be calculated through the first preset pressure value range and the second preset pressure value range to also be the first preset pressure value range and the second preset pressure value range and maintain the high-frequency or normal-frequency unit container pressure stable; the preset pressure value and the preset oxygen concentration of the mixed oxygen container are determined according to the target pressure and the oxygen concentration, and finally the ratio of the air source and the oxygen source flow rate and the total amount of the source flow rate are determined based on the preset pressure value and the preset oxygen concentration of the mixed oxygen container.

[0093] According to an embodiment of the present invention, a control method embodiment of a high-frequency jet ventilator is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0094] In this embodiment, a control method for a high-frequency jet ventilator is provided, which can be used for the control system of the above-mentioned high-frequency jet ventilator. Figure 3 is a flow chart of a control method of a high frequency jet ventilator according to an embodiment of the present invention. Figure 3 As shown, the process includes the following steps:

[0095] Step S301, obtaining target data of a target mixed gas output by a high-frequency jet ventilator.

[0096] Specifically, the target data includes target gas type, target pressure, and target oxygen concentration.

[0097] The target gas type refers to the type of mixed gas that needs to be output, that is, whether a high-frequency mixed gas, a normal-frequency mixed gas, or a combination of the two is needed. This information is usually based on the doctor's clinical judgment and the patient's specific ventilation needs; then the target pressure value of the target mixed gas is obtained. This value is determined based on the patient's ventilation needs and is entered by medical staff on the ventilator's setting interface. There are different target pressure values ​​for high-frequency and normal-frequency mixed gases; finally, the oxygen concentration of the target mixed gas also needs to be obtained.

[0098] Step S302, acquiring target pressure sensor data corresponding to the target gas type and oxygen concentration sensor data of the oxygen mixing container, and calculating a first difference between the target pressure sensor data and the target pressure and a second difference between the oxygen concentration sensor data and the target oxygen concentration.

[0099] Specifically, according to the determined gas type, the current pressure data and the oxygen concentration sensor data of the oxygen mixing container are read in the corresponding pressure sensor, because different types of gases correspond to different sensors. For example, the high-frequency and normal-frequency unit containers are respectively equipped with their own pressure sensors for real-time monitoring of the pressure in their respective containers.

[0100] Further, the actual pressure data read is compared with the target pressure set in step S301, and the difference between the two is calculated as the first difference; the actual oxygen concentration data read is compared with the target oxygen concentration set in step S301, and the difference between the two is calculated as the second difference.

[0101] In an optional implementation, when the target gas type is a constant frequency mixed gas, the above step S302 includes:

[0102] Acquire a first constant frequency pressure of the constant frequency control pressure sensor 4 and a second constant frequency pressure of the constant frequency unit container pressure sensor 14;

[0103] The first constant frequency difference value and the second constant frequency difference value between the first constant frequency pressure and the second constant frequency pressure and the target pressure are calculated respectively.

[0104] When the high-frequency jet ventilator is set from standby to constant-frequency ventilation mode, that is, the target gas type is a constant-frequency mixed gas, the default curve is queried by querying the parameters of the constant-frequency ventilation and the output is taken into account after the offset between the actual working pressure point and the working pressure point of the default curve, and the first constant-frequency difference between the first constant-frequency pressure of the above-mentioned constant-frequency control pressure sensor 4 and the target pressure and the second constant-frequency difference between the constant-frequency unit container pressure sensor 14 and the target pressure are calculated.

[0105] In an optional implementation, when the target gas type is a high-frequency mixed gas, the above step S302 includes:

[0106] Acquire a first high-frequency pressure of the high-frequency control pressure sensor 3 and a second high-frequency pressure of the high-frequency unit container pressure sensor 13;

[0107] A first high frequency difference value and a second high frequency difference value between the first high frequency pressure and the second high frequency pressure and the target pressure are calculated respectively.

[0108] When the high-frequency jet ventilator is set from standby to high-frequency ventilation mode, that is, the target gas type is a high-frequency mixed gas, the default curve is queried by querying the parameters of the high-frequency ventilation and the output is taken into account after the offset between the actual working pressure point and the working pressure point of the default curve, and the first high-frequency difference between the above-mentioned high-frequency control pressure sensor 3 and the target pressure and the second high-frequency difference between the high-frequency unit container pressure sensor 13 and the target pressure are calculated.

[0109] Similarly, in an optional embodiment, when the high-frequency jet ventilator is set from standby to a ventilation mode in which high frequency and normal frequency are superimposed, the first normal frequency difference and the second normal frequency difference as well as the first high frequency difference and the second high frequency difference are calculated respectively.

[0110] Step S303, adjusting the opening of each solenoid valve based on the first difference and the second difference, so that the mixed gas output by the high-frequency jet ventilator meets the target data.

[0111] Specifically, the solenoid valve that needs to be adjusted is determined based on the first difference calculated in step S302 and the target gas type (high-frequency mixed gas or normal-frequency mixed gas or the superposition of the two). For example, for high-frequency mixed gas, it may be necessary to adjust the high-frequency unit control solenoid valve 8 and the high-frequency unit container control solenoid valve 11; while for normal-frequency mixed gas, it is necessary to adjust and control the normal-frequency unit control solenoid valve 9 and the normal-frequency unit container control solenoid valve 12. At the same time, the air source control solenoid valve 6 and / or the oxygen source control solenoid valve 7 are adjusted according to the second difference.

[0112] In an optional implementation, when the target gas type is a constant frequency mixed gas, the above step S303 includes:

[0113] When the first constant frequency difference and / or the second constant frequency difference are positive numbers, the duty cycle signal of the constant frequency unit control solenoid valve and / or the constant frequency unit container control solenoid valve is reduced according to the difference ratio until the first constant frequency difference and the second constant frequency difference are both 0;

[0114] When the first constant frequency difference and / or the second constant frequency difference is negative, the duty cycle signal of the constant frequency unit control solenoid valve and / or the constant frequency unit container control solenoid valve is increased according to the difference ratio until the first constant frequency difference and the second constant frequency difference are both 0.

[0115] Through the above calculation, a first constant frequency difference between the first constant frequency pressure of the constant frequency control pressure sensor 4 and the target pressure and a second constant frequency difference between the constant frequency unit container pressure sensor 14 and the target pressure are obtained. The opening of the constant frequency unit control solenoid valve 9 is adjusted based on the first constant frequency difference, and the opening of the constant frequency unit container control solenoid valve 12 is adjusted based on the second constant frequency difference. When the first constant frequency difference and / or the second constant frequency difference are positive numbers, the duty cycle signal of the constant frequency unit control solenoid valve 9 and / or the constant frequency unit container control solenoid valve 12 is reduced according to the difference ratio until the first constant frequency difference and / or the second constant frequency difference are both 0; when the first constant frequency difference and / or the second constant frequency difference are negative numbers, the duty cycle signal of the constant frequency unit control solenoid valve 9 and / or the constant frequency unit container control solenoid valve 12 is increased according to the difference ratio until the first constant frequency difference and / or the second constant frequency difference are both 0.

[0116] In an optional implementation, when the target gas type is a high-frequency mixed gas, the above step S303 includes:

[0117] When the first high-frequency difference and / or the second high-frequency difference are positive numbers, the duty cycle signal of the high-frequency unit control solenoid valve and / or the high-frequency unit container control solenoid valve is reduced according to the difference ratio until the first high-frequency difference and the second high-frequency difference are both 0;

[0118] When the first high frequency difference and / or the second high frequency difference is negative, the duty cycle signal of the high frequency unit control solenoid valve and / or the high frequency unit container control solenoid valve is increased according to the difference ratio until the first high frequency difference and the second high frequency difference are both 0.

[0119] Through the above calculation, a first high-frequency difference between the first high-frequency pressure of the high-frequency control pressure sensor 3 and the target pressure and a second high-frequency difference between the high-frequency unit container pressure sensor 13 and the target pressure are obtained. The opening of the high-frequency unit control solenoid valve 8 is adjusted based on the first high-frequency difference, and the opening of the high-frequency unit container control solenoid valve 11 is adjusted based on the second high-frequency difference. When the first high-frequency difference and / or the second high-frequency difference are positive numbers, the duty cycle signal of the high-frequency unit control solenoid valve 8 and / or the high-frequency unit container control solenoid valve 11 is reduced according to the difference ratio until the first high-frequency difference and / or the second high-frequency difference are both 0; when the first high-frequency difference and / or the second high-frequency difference are negative numbers, the duty cycle signal of the high-frequency unit control solenoid valve 8 and / or the high-frequency unit container control solenoid valve 11 is increased according to the difference ratio until the first high-frequency difference and / or the second high-frequency difference are both 0.

[0120] In an optional embodiment, when the target gas type is a superposition of high-frequency and normal-frequency mixed gases, the first constant-frequency difference between the first constant-frequency pressure of the normal-frequency control pressure sensor 4 and the target pressure, the first high-frequency difference between the first high-frequency pressure of the high-frequency control pressure sensor 3 and the target pressure, and the second high-frequency difference between the high-frequency unit container pressure sensor 13 and the target pressure are obtained through the above calculations, and the duty cycle signals of the normal-frequency unit control solenoid valve 9 and / or the normal-frequency unit container control solenoid valve 12, and the duty cycle signals of the high-frequency unit control solenoid valve 8 and / or the high-frequency unit container control solenoid valve 11 are adjusted based on the first constant-frequency difference and / or the second constant-frequency difference, the first high-frequency difference and / or the second high-frequency difference.

[0121] In summary, the control method of the high-frequency jet ventilator of the embodiment of the present invention first determines the preset pressure values ​​of other sensors according to the target data of the target mixed gas set by the user (including the target gas type, target pressure and target oxygen concentration), specifically, determines the first preset pressure value range of the high-frequency mixed gas and the second preset pressure value range of the normal frequency mixed gas according to the target pressure; the pressure of the mixed oxygen delivery control module can be calculated through the first preset pressure value range and the second preset pressure value range to also be the first preset pressure value range and the second preset pressure value range and maintain the high-frequency or normal frequency unit container pressure stable; the preset pressure value and the preset oxygen concentration of the mixed oxygen container are determined according to the target pressure and the oxygen concentration, and finally the ratio of the air source and the oxygen source flow rate and the total source flow rate are determined based on the preset pressure value and the preset oxygen concentration of the mixed oxygen container.

[0122] Next, according to different gas types, the actual sensing pressure is obtained, and the difference with the target data is calculated. Specifically, the current pressure data and the oxygen concentration sensor data of the oxygen mixing container are read in the corresponding pressure sensor, and the actual pressure data read is compared with the target pressure set in step S301, and the difference between the two is calculated as the first difference; the actual oxygen concentration data read is compared with the target oxygen concentration set in step S301, and the difference between the two is calculated as the second difference. When the high-frequency jet ventilator is set from standby to constant frequency ventilation mode, that is, the target gas type is constant frequency mixed gas, the default curve is queried by querying the parameters of constant frequency ventilation and the offset between the actual working pressure point and the default curve working pressure point is considered and then output, and the above-mentioned first constant frequency difference and second constant frequency difference are calculated. When the high-frequency jet ventilator is set from standby to high frequency ventilation mode, that is, the target gas type is high frequency mixed gas, the default curve is queried by querying the parameters of high frequency ventilation and the offset between the actual working pressure point and the default curve working pressure point is considered and then output, and the above-mentioned first high frequency difference and second high frequency difference are calculated. When the high-frequency jet ventilator is set from standby mode to a ventilation mode in which high frequency and normal frequency are superimposed, the first normal frequency difference and the second normal frequency difference as well as the first high frequency difference and the second high frequency difference are calculated respectively.

[0123] Finally, according to the above-mentioned differences, the opening of each solenoid valve is adjusted accordingly so that the mixed gas meets the target data set by the user. Specifically, if the target gas type is a high-frequency mixed gas, when the first high-frequency difference and / or the second high-frequency difference are positive numbers, the duty cycle signal of the high-frequency unit control solenoid valve 8 and / or the high-frequency unit container control solenoid valve 11 is reduced according to the difference ratio until the first high-frequency difference and / or the second high-frequency difference are both 0; when the first high-frequency difference and / or the second high-frequency difference are negative numbers, the duty cycle signal of the high-frequency unit control solenoid valve 8 and / or the high-frequency unit container control solenoid valve 11 is increased according to the difference ratio until the first high-frequency difference and / or the second high-frequency difference are both 0; if the target gas type is a normal frequency mixed gas, when the first normal frequency difference and / or the second normal frequency difference are positive numbers, the duty cycle signal of the normal frequency unit control solenoid valve 9 and / or the normal frequency unit container control solenoid valve 12 is reduced according to the difference ratio until the first normal frequency difference and / or the second normal frequency difference are both 0; when the first normal frequency difference and / or When the second constant frequency difference is a negative number, the duty cycle signal of the constant frequency unit control solenoid valve 9 and / or the constant frequency unit container control solenoid valve 12 is increased according to the difference ratio until the first constant frequency difference and / or the second constant frequency difference are both 0; if the target gas type is a superposition of high-frequency and constant frequency mixed gas, the first constant frequency difference between the first constant frequency pressure of the constant frequency control pressure sensor 4 and the target pressure, the first high frequency pressure of the high frequency control pressure sensor 3 and the first high frequency difference of the target pressure, and the second high frequency difference between the high frequency unit container pressure sensor 13 and the target pressure are obtained by the above calculations, and the duty cycle signal of the constant frequency unit control solenoid valve 9 and / or the constant frequency unit container control solenoid valve 12, and the duty cycle signal of the high frequency unit control solenoid valve 8 and / or the high frequency unit container control solenoid valve 11 are adjusted based on the first constant frequency difference and / or the second constant frequency difference, the first high frequency difference and / or the second high frequency difference.

[0124] The embodiment of the present invention also provides a computer device, see Figure 4 , Figure 4 is a schematic diagram of the structure of a computer device provided by an optional embodiment of the present invention, such as Figure 4As shown, the computer device includes: one or more processors 100, a memory 200, and interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. Various components are connected to each other using different buses for communication, and can be installed on a common mainboard or installed in other ways as needed. The processor can process the instructions executed in the computer device, including instructions stored in or on the memory to display the graphical information of the GUI on an external input / output device (such as, a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Similarly, multiple computer devices can be connected, and each device provides some necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). Figure 4 A processor 100 is taken as an example.

[0125] The processor 100 may be a central processing unit, a network processor or a combination thereof. The processor 100 may further include a hardware chip. The hardware chip may be a dedicated integrated circuit, a programmable logic device or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable logic gate array, a general purpose array logic or any combination thereof.

[0126] The memory 200 stores instructions executable by at least one processor 100, so that the at least one processor 100 executes the method shown in the above embodiment.

[0127] The memory 200 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required by at least one function; the data storage area may store data created according to the use of the computer device, etc. In addition, the memory 200 may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some optional embodiments, the memory 200 may optionally include a memory remotely arranged relative to the processor 100, and these remote memories may be connected to the computer device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0128] The memory 200 may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a flash memory, a hard disk or a solid state drive; the memory 200 may also include a combination of the above types of memory.

[0129] The computer device also includes an input device 300 and an output device 400. The processor 100, the memory 200, the input device 300 and the output device 400 may be connected via a bus or other means. Figure 4 The example of connecting through bus is taken in the following.

[0130] The input device 300 can receive input digital or character information, and generate key signal input related to the user settings and function control of the computer device, such as a touch screen, a keypad, a mouse, a track pad, a touch pad, an indicator bar, one or more mouse buttons, a trackball, a joystick, etc. The output device 400 may include a display device, an auxiliary lighting device (e.g., an LED) and a tactile feedback device (e.g., a vibration motor), etc. The above-mentioned display device includes but is not limited to a liquid crystal display, a light emitting diode, a display and a plasma display. In some optional embodiments, the display device can be a touch screen.

[0131] The embodiment of the present invention also provides a computer-readable storage medium. The method according to the embodiment of the present invention can be implemented in hardware, firmware, or can be implemented as a computer code that can be recorded in a storage medium, or can be implemented as a computer code that is originally stored in a remote storage medium or a non-temporary machine-readable storage medium and will be stored in a local storage medium through a network download, so that the method described herein can be stored in such software processing on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only storage memory, a random access memory, a flash memory, a hard disk or a solid-state hard disk, etc.; further, the storage medium can also include a combination of the above types of memories. It can be understood that a computer, a processor, a microprocessor controller, or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by a computer, a processor, or hardware, the method shown in the above embodiment is implemented.

[0132] A part of the present invention may be applied as a computer program product, such as a computer program instruction, which, when executed by a computer, can call or provide the method and / or technical solution according to the present invention through the operation of the computer. Those skilled in the art should understand that the existence of the computer program instruction in a computer-readable medium includes, but is not limited to, a source file, an executable file, an installation package file, etc., and accordingly, the way in which the computer program instruction is executed by the computer includes, but is not limited to: the computer directly executes the instruction, or the computer compiles the instruction and then executes the corresponding compiled program, or the computer reads and executes the instruction, or the computer reads and installs the instruction and then executes the corresponding installed program. Here, the computer-readable medium may be any available computer-readable storage medium or communication medium accessible to the computer.

[0133] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A control system for a high-frequency jet ventilator, characterized in that: The high-frequency jet ventilator comprises an air source, an oxygen source, an oxygen mixing container, a high-frequency unit container, a normal-frequency unit container and a jet port; The control system comprises: An oxygen mixing control module, used for controlling the air delivered by the air source and the oxygen delivered by the oxygen source to be mixed in an oxygen mixing container to generate a mixed gas with a preset pressure value; a mixed oxygen delivery control module, used for delivering the mixed gas to the high-frequency unit container and the normal-frequency unit container respectively, the mixed oxygen delivery module further comprising a high-frequency unit container pressure sensor electrically connected to the high-frequency unit container respectively, and a normal-frequency unit container pressure sensor electrically connected to the normal-frequency unit container; A dual-frequency gas circuit control module, used to generate a high-frequency mixed gas within a first preset pressure value range and / or a normal-frequency mixed gas within a second preset pressure value range, and deliver the high-frequency mixed gas and / or the normal-frequency mixed gas to the injection port; The injection port pressure control module is used to control the injection port to output a target mixed gas that meets a target pressure value.

2. The control system according to claim 1, characterized in that: The oxygen mixing control module includes an air source control unit and an oxygen source passage unit; The air source control unit includes an air source pressure sensor and an air control solenoid valve, and the air source control unit is used to control the air source to enter the oxygen mixing container by adjusting the opening of the air control solenoid valve; The oxygen gas source passage unit includes an oxygen gas source pressure sensor and an oxygen control solenoid valve. The oxygen gas source passage unit is used to control the oxygen gas source to enter the oxygen mixing container by adjusting the opening of the oxygen control solenoid valve.

3. The control system according to claim 1 or 2, characterized in that: The mixed oxygen delivery control module further includes: A high-frequency unit container control solenoid valve electrically connected to the high-frequency unit container, used to adjust the opening of the high-frequency unit container control solenoid valve so that the pressure value of the high-frequency mixed gas placed in the high-frequency unit container is within a preset range; The constant frequency unit container control solenoid valve electrically connected to the constant frequency unit container is used to adjust the opening of the constant frequency unit container control solenoid valve so that the pressure value of the constant frequency mixed gas placed in the constant frequency unit container is within a preset range.

4. The control system according to claim 3, characterized in that: The dual-frequency gas circuit control module includes a high-frequency gas circuit control unit and a normal-frequency gas circuit control unit; The high-frequency gas circuit control unit is used to generate a high-frequency mixed gas within a first preset pressure value range, and the high-frequency gas circuit control unit includes a high-frequency unit control solenoid valve and a high-frequency control pressure sensor; The constant frequency gas circuit control unit is used to generate a constant frequency mixed gas within a second preset pressure value range, and the constant frequency gas circuit control unit includes a constant frequency unit control solenoid valve and a constant frequency control pressure sensor; And the first preset pressure value range and the second preset pressure value range are determined based on the target pressure value.

5. The control system according to claim 4, characterized in that: The oxygen mixing control module further includes: The oxygen concentration sensor electrically connected to the oxygen mixing container is used to detect the oxygen concentration of the mixed gas so that the oxygen concentration is a preset value.

6. A control method for a high-frequency jet ventilator, characterized in that The method is applied to the system according to any one of claims 1 to 5, wherein the method comprises: Acquire target data of a target mixed gas output by the high-frequency jet ventilator, wherein the target data includes a target gas type, a target pressure, and a target oxygen concentration; Acquire target pressure sensor data corresponding to the target gas type and oxygen concentration sensor data of the oxygen mixing container, and calculate a first difference between the target pressure sensor data and the target pressure and a second difference between the oxygen concentration sensor data and the target oxygen concentration; The opening of each solenoid valve is adjusted based on the first difference and the second difference so that the mixed gas output by the high-frequency jet ventilator meets the target data.

7. The control method according to claim 6, characterized in that: When the target gas type is a normal frequency mixed gas, the acquiring target pressure sensor data corresponding to the target gas type and the oxygen concentration sensor data of the oxygen mixing container, and calculating a first difference between the target pressure sensor data and the target pressure and a second difference between the oxygen concentration sensor data and the target oxygen concentration, comprises: Acquire a first constant frequency pressure of a constant frequency control pressure sensor and a second constant frequency pressure of a constant frequency unit container pressure sensor; A first constant frequency difference and a second constant frequency difference between the first constant frequency pressure and the second constant frequency pressure and a target pressure are calculated respectively.

8. The control method according to claim 6, characterized in that: When the target gas type is a high-frequency mixed gas, the acquiring of target pressure sensor data corresponding to the target gas type and oxygen concentration sensor data of the oxygen mixing container, and calculating a first difference between the target pressure sensor data and the target pressure and a second difference between the oxygen concentration sensor data and the target oxygen concentration, comprises: Acquire a first high-frequency pressure of a high-frequency control pressure sensor and a second high-frequency pressure of a high-frequency unit container pressure sensor; A first high-frequency difference value and a second high-frequency difference value between the first high-frequency pressure and the second high-frequency pressure and a target pressure are calculated respectively.

9. The control method according to claim 7, characterized in that: The adjusting the opening of each solenoid valve based on the first difference and the second difference so that the mixed gas output by the high-frequency jet ventilator meets the target data includes: When the first constant frequency difference and / or the second constant frequency difference are positive numbers, the duty cycle signal of the constant frequency unit control solenoid valve and / or the constant frequency unit container control solenoid valve is reduced according to the difference ratio until the first constant frequency difference and the second constant frequency difference are both 0; When the first constant frequency difference and / or the second constant frequency difference is a negative number, the duty cycle signal of the constant frequency unit control solenoid valve and / or the constant frequency unit container control solenoid valve is increased according to the difference ratio until the first constant frequency difference and the second constant frequency difference are both 0.

10. The control method according to claim 8, characterized in that: The adjusting the opening of each solenoid valve based on the first difference and the second difference so that the mixed gas output by the high-frequency jet ventilator meets the target data includes: When the first high-frequency difference and / or the second high-frequency difference are positive numbers, the duty cycle signal of the high-frequency unit control solenoid valve and / or the high-frequency unit container control solenoid valve is reduced according to the difference ratio until the first high-frequency difference and the second high-frequency difference are both 0; When the first high-frequency difference and / or the second high-frequency difference is a negative number, the duty cycle signal of the high-frequency unit control solenoid valve and / or the high-frequency unit container control solenoid valve is increased in proportion to the difference until the first high-frequency difference and the second high-frequency difference are both 0.

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