Air-driven oxygen therapy and salt therapy integrated equipment control method and system

Abstract

The invention relates to the field of medical instruments, and discloses an air-driven oxygen therapy and salt therapy integrated equipment control method and system, and the method comprises the control steps: obtaining oxygen therapy and salt therapy integrated operation parameters in a current state; obtaining an adjustment target value; adjusting the output parameters of the oxygen generation branch according to the adjustment target value; adjusting output parameters of the salt aerosol branch according to the adjustment target value; and working parameters of the salt aerosol generating unit are adjusted according to the salt aerosol parameters. Through the scheme, any parameter of the oxygen flow and the salt aerosol concentration output by the integrated equipment can be adjusted, or when the oxygen flow and the salt aerosol concentration output by the integrated equipment are adjusted at the same time, the equipment can quickly complete adjustment of corresponding parameters, stable oxygen concentration and stable salt aerosol concentration are output, the adjustment steps are simplified, the adjustment time is saved, and the treatment effect is stabilized.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a control method and system for air-driven oxygen therapy and salt therapy integrated equipment. Background Art

[0002] Rock salt aerosol therapy (salt aerosol therapy) is a salt therapy used to treat the respiratory system by generating salt aerosol. It is a non-drug therapy that can increase the concentration of respiratory ion, change the mucus osmotic pressure, improve the rheology of respiratory mucus, activate the innate immunity of lung tissue, and enhance the activity of lung macrophages, thereby achieving the purpose of inhibiting bacteria and inflammation, relieving edema, enhancing clearance, expectoration, enhancing immunity, and strengthening resistance, thereby preventing, improving, and treating respiratory diseases.

[0003] When the lung capacity and oxygenation capacity of patients with respiratory diseases are affected, resulting in decreased blood oxygen saturation, the patients should be given oxygen inhalation therapy, i.e. oxygen therapy, to increase the patient's oxygen partial pressure and blood oxygen saturation and improve tissue oxygen supply.

[0004] Combining oxygen therapy and salt therapy, patients with respiratory diseases can improve tissue activity while receiving both oxygen therapy and salt therapy. Salt therapy can expectorate, relieve edema, inhibit bacteria and inflammation, treat respiratory diseases, and improve the therapeutic effect of oxygen therapy.

[0005] The higher the salt aerosol concentration, the better. The appropriate therapeutic concentration needs to be selected based on the patient's disease type, physical condition and other factors. If the concentration is too low, the treatment effect will be poor. If the concentration is too high, it will irritate the respiratory mucosa and cause discomfort, and even cause dehydration and damage to the respiratory mucosa. What's worse, it will cause damage to the mucosal barrier function. Therefore, the inhalation concentration of salt aerosol must be controlled.

[0006] Combined oxygen and salt therapy devices combine oxygen produced by an oxygen generator with dry salt aerosol generated by a salt aerosol unit, which is then introduced into the patient's respiratory tract for oxygen and salt therapy. Since the salt aerosol unit is typically driven by air to generate the salt aerosol, the law of conservation of mass causes changes in both the oxygen and salt aerosol concentrations when the salt aerosol mixes with oxygen. If the salt aerosol unit doesn't adjust the oxygen flow rate accordingly, the oxygen and salt aerosol concentrations output by the combined device will change, which is undesirable. Summary of the Invention

[0007] In order to solve the problem that changes in the above-mentioned oxygen flow rate will cause changes in the salt aerosol concentration and oxygen concentration, thereby affecting the treatment effect, the present invention provides a control method and system for an integrated oxygen therapy and salt therapy device based on a saline solution. When the oxygen flow rate changes, the generation rate of the salt aerosol can be synchronously adjusted, and the salt aerosol concentration and oxygen concentration can be kept stable when adjusting the oxygen flow rate, thereby providing patients with a stable treatment effect.

[0008] To achieve the above objectives, the specific technical solution of the present invention is a control method for an air-driven oxygen therapy and salt therapy integrated device, including an air source, an oxygen production branch, and a salt aerosol branch. The control method includes the following steps: S1 obtains the output terminal parameters of the oxygen therapy and salt therapy integrated device, the output parameters of the oxygen production branch, the output parameters of the salt aerosol branch, and the working parameters of the salt aerosol generating unit in the current state; S2 obtains the adjustment target value; S3 adjusts the output parameters of the oxygen production branch according to the adjustment target value; S4 adjusts the salt aerosol branch output parameters according to the adjustment target value; S5 adjusts the working parameters of the salt aerosol generating unit according to the salt aerosol parameters.

[0009] Furthermore, in step S1, the output end parameters of the integrated oxygen therapy and salt therapy device include a second oxygen concentration and a second salt aerosol concentration; the output parameters of the oxygen production branch include an oxygen flow rate and a first oxygen concentration; the output parameters of the salt aerosol branch include a salt aerosol branch output flow rate and a first salt aerosol concentration; and the working parameters of the salt aerosol generating unit include a salt solution concentration and a salt particle generation rate.

[0010] Among them, the oxygen flow rate output by the oxygen production branch is related to the opening of the pressure regulating valve at the output end of the oxygen production branch and / or the angular displacement of the stepping motor; the first oxygen concentration output by the oxygen production branch is related to the characteristics of the molecular sieve; the output flow rate of the salt aerosol branch is related to the input flow rate of the salt aerosol branch; the first salt aerosol concentration output by the salt aerosol branch is related to the concentration of the salt solution, the salt particle generation rate, and the input flow rate of the salt aerosol branch; the salt particle generation rate is related to the working voltage of the salt particle generation module.

[0011] The salt aerosol branch input flow rate uses different control parameters depending on the gas source type, specifically: In one approach, if the salt aerosol branch and the oxygen production branch use the same gas source, a second pressure regulating valve and / or a second stepping motor is provided between the gas source and the salt aerosol branch, and the air flow input to the salt aerosol branch is adjusted by controlling the opening of the second pressure regulating valve and / or the angular displacement of the stepping motor; Alternatively, if the salt aerosol branch uses an independent air source, which may be a blower or fan, the air flow input into the salt aerosol branch is adjusted by controlling the speed of the blower or fan through input voltage.

[0012] The opening of the pressure regulating valve is controlled by the input current, the angular displacement of the stepping motor is controlled by the input pulse signal, and the salt particle generation rate is controlled by the input voltage.

[0013] Specifically, the salt particle generation module can form salt particles by cutting and grinding solid salt ore with a cutter, and the cutter speed is controlled by controlling the input voltage of the cutter to adjust the salt particle generation rate; The salt particle generation module can also atomize the salt solution into salt mist for the salt mist generation module, and then dry the salt mist to form solid salt particles. The atomization rate is controlled by controlling the input voltage of the salt mist generation module to achieve the regulation of the salt particle generation rate.

[0014] Furthermore, in step S2, the adjustment target value includes an oxygen flow adjustment target value and a salt aerosol concentration adjustment target value.

[0015] Furthermore, in step S3, the oxygen flow rate output from the oxygen production branch is adjusted to reach a set target value by adjusting the opening of the electromagnetic pressure regulating valve or the angular displacement of the stepping motor.

[0016] Furthermore, in step S4, the specific steps of adjusting the oxygen flow rate to the target value and maintaining the oxygen concentration and salt aerosol concentration at the output end of the oxygen therapy and salt therapy integrated device unchanged are: S401 constructs a relationship model between the oxygen concentration at the output end of the oxygen therapy and salt therapy integrated device and the output flow of the oxygen production branch and the output flow of the salt aerosol branch; S402 calculates the target value of the output flow rate of the salt aerosol branch according to the target value of the oxygen flow rate adjustment, the oxygen concentration output by the equipment, and the oxygen concentration output by the oxygen production branch; S403 adjusts the air flow rate input to the salt aerosol branch according to the flow rate target value output by the salt aerosol branch; Furthermore, in step S401, a relationship model is constructed based on the law of conservation of mass and Dalton's law of gas partial pressure to obtain the formula for the oxygen concentration at the output end of the integrated oxygen therapy and salt therapy device:

[0017] Where: C O2 Q is the oxygen concentration at the output end, which is the volume percentage of pure oxygen in the total gas; O2 Q is the oxygen flow rate output from the oxygen production branch, in L / min; salt is the output flow of the salt aerosol branch, unit is L / min; the oxygen concentration in the air is 21%.

[0018] Furthermore, the specific steps of step S5 are: S501 builds a salt aerosol concentration relationship model output by the oxygen therapy and salt therapy integrated equipment; S502 calculates a target value of the salt particle generation rate in the salt aerosol generation module based on the oxygen flow rate output by the oxygen production branch and the output flow rate of the salt aerosol branch; S503 adjusts the operating voltage of the salt aerosol generating module so that the salt particle generation rate reaches the target value.

[0019] Furthermore, in step S501, according to the law of conservation of mass, the concentration formula of the salt sol is: Where: C is the concentration of salt aerosol generated; Q g is the atomization rate, Q air is the ventilation flow; C Y is the concentration of the salt solution, which means the percentage of the mass of salt to the total mass of the salt solution; According to the unit conversion, 1m 3 =1000L, the salt aerosol concentration formula output from the salt aerosol branch can be obtained as: Where: C salt The dry salt aerosol concentration output by the salt aerosol branch, in μg / m 3 ;Q g is the atomization rate, in μg / min; Q salt is the output flow of the salt aerosol branch, in L / min; C Y is the concentration of the salt solution, which means the percentage of the mass of salt to the total mass of the salt solution; 1m 3 =1000L unit conversion; According to the law of conservation of mass and Dalton's law of gas partial pressure, the formula for the salt aerosol concentration at the output end of the oxygen therapy and salt therapy integrated equipment is established as follows: Where: C S Q is the salt aerosol concentration at the output end of the oxygen therapy and salt therapy equipment; salt is the output flow of the salt aerosol branch; C salt The dry salt aerosol concentration output by the salt aerosol branch, in μg / m 3 ;Q O2 The oxygen flow rate output from the oxygen production branch; Substituting the concentration formula (3) for salt aerosol generation into (4) we obtain: Where: C S is the salt aerosol concentration at the output end, in μg / m 3 ;Q g is the salt aerosol generation unit atomization rate, in μg / min; C Y is the concentration of the salt solution, which indicates the percentage of the mass of salt in the total mass of the salt solution; Q salt is the output flow of the salt aerosol branch, in L / min; Q O2 The oxygen flow rate output from the oxygen production branch, in L / min; 1m 3 =1000L unit conversion.

[0020] Another control scheme, in which the oxygen flow output remains unchanged and only the salt aerosol concentration is changed, is as follows: S6 obtains the salt aerosol concentration adjustment target value; S7 obtains the target value of the salt aerosol concentration output by the salt aerosol outlet branch according to the oxygen flow output by the oxygen production branch and the output flow of the salt aerosol branch; S8 obtains a target value of the salt particle generation rate according to the salt solution concentration, the target value of the salt aerosol concentration output by the salt aerosol branch, and the output flow rate of the salt aerosol branch; S9 adjusts the operating voltage of the salt aerosol generation module so that the salt particle generation rate reaches the target value.

[0021] Another control scheme is that when both the oxygen flow rate and the salt aerosol concentration change, the oxygen flow rate and the oxygen concentration are prioritized. The specific adjustment steps are as follows: S10 obtains an oxygen flow rate adjustment target value and a salt aerosol concentration adjustment target value; S11 adjusts the oxygen flow rate output by the oxygen production branch and the output flow rate of the salt aerosol branch according to steps S3 and S4; S12 adjusts the salt aerosol concentration output by the salt aerosol branch according to steps S7 to S9.

[0022] Furthermore, you can also preset working modes, including oxygen therapy and salt therapy synergistic mode, oxygen therapy mode, and salt therapy mode; When the working mode is the oxygen therapy and salt therapy coordinated mode, the oxygen production branch and the salt aerosol branch are opened at the same time, and the oxygen flow rate is controlled by the pressure regulating valve and / or stepper motor at the outlet end of the oxygen production branch. The output flow rate and salt aerosol concentration of the salt aerosol branch are controlled by controlling the air intake flow rate and salt particle generation rate of the salt aerosol branch, and finally the set oxygen concentration and salt aerosol concentration at the output end of the integrated device are obtained. When the oxygen flow rate parameters and salt aerosol concentration parameters need to be adjusted, they are adjusted according to the above-mentioned control method; When the working mode is selected as oxygen therapy mode, the salt aerosol branch is powered off and only the oxygen generation branch works, which reduces the influx of air into the salt aerosol branch and can provide patients with higher concentration oxygen therapy.

[0023] When the working mode is selected as salt therapy mode, the oxygen generation branch stops working and only the salt aerosol branch works. The gas source only supplies gas to the salt aerosol branch, reducing the mixing with the oxygen output by the oxygen generation branch. Therefore, the salt aerosol concentration will not be diluted, and a higher concentration of salt aerosol can be provided to the patient for treatment.

[0024] Furthermore, the method also includes presetting the working parameters of the integrated oxygen therapy and salt therapy device, and setting the gear parameter of the oxygen flow rate output by the oxygen production branch and the salt aerosol concentration; For example, taking the oxygen production branch with a maximum flow rate of 5L as an example, the oxygen flow rate is set to 5 gears from 1 to 5L, and the salt aerosol concentration is set to 5μg / m 3 , 10 μg / m 3 , 15 μg / m 3 , 20 μg / m 3 , 25 μg / m 3 Set to 5 gears, according to the above control method, preset control parameters corresponding to different gears to improve adjustment efficiency.

[0025] Also disclosed is an air-driven oxygen therapy and salt therapy integrated equipment control system for implementing the above-mentioned control method, comprising a detection module, a control module, an interaction module, an air source, an oxygen production branch, a salt aerosol branch, and a mixing unit; The interactive module is used for human-computer interaction, displays the current operating parameters, and sets the parameters to adjust the target value through the interactive module; The detection module includes a voltage feedback unit, a current feedback unit, a flow acquisition unit, and a concentration acquisition unit. The voltage feedback unit measures and feeds back the operating voltage of each component of the oxygen therapy and salt therapy integrated device in real time; the flow acquisition unit is used to obtain the oxygen flow signal output by the oxygen production branch and the flow signal output by the salt aerosol branch collected by the flow sensor, and transmit the collected signals to the control module; the concentration acquisition unit is used to obtain the oxygen concentration signal output by the oxygen production branch, the salt aerosol concentration signal output by the salt aerosol branch, the oxygen concentration signal and the salt aerosol concentration signal at the output end of the oxygen therapy and salt therapy integrated device collected by the oxygen concentration sensor, and transmit the collected signals to the control module; The control module includes a data processing unit and an adjustment unit. The data processing unit is used to receive the signals collected by the detection module and the parameters set by the interaction module, and perform calculations on the acquired signals. The adjustment unit sends an adjustment signal based on the processing results of the data processing unit to adjust the operating parameters of the oxygen generation branch and the salt aerosol branch. The air source is used to provide fresh air to the oxygen production branch and the salt aerosol branch; The mixing section is connected to the oxygen production branch and the salt aerosol branch. The oxygen prepared by the oxygen production branch and the salt aerosol produced by the salt aerosol branch are mixed in the mixing section and then output through the output end of the oxygen therapy and salt therapy integrated device for inhalation by the patient.

[0026] Beneficial effects of the present invention: 1. Through the present invention, when changing the oxygen flow rate output by the oxygen production branch, there is no need for tedious and time-consuming concentration verification. The integrated oxygen therapy and salt therapy device can quickly and automatically adjust the oxygen concentration and salt aerosol concentration. After adjusting the flow rate, the integrated device outputs stable oxygen concentration and salt aerosol concentration, reducing the adjustment time and ensuring the treatment effect. 2. Adjust the oxygen flow of the oxygen production branch, the salt aerosol concentration output by the integrated device, or any set value, or adjust both parameters simultaneously. The corresponding parameters can be adjusted quickly to ensure that the integrated device outputs a stable oxygen concentration and ensure the patient's oxygen therapy effect.

[0027] 3. Different working modes can be selected. According to different treatment scenarios and symptoms, the three working modes of oxygen therapy, salt therapy, and oxygen therapy and salt therapy synergistic treatment can be freely adjusted. It is suitable for all patients and has a wider range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. For those skilled in the art, other drawings can be obtained based on the drawings without paying any creative work.

[0029] Figure 1 This is a control flow chart of an air-driven oxygen therapy and salt therapy integrated device of the present invention; Figure 2 This is the control flow chart when only the salt aerosol concentration is adjusted; Figure 3 This is the control flow chart for simultaneous regulation of oxygen flow and salt aerosol concentration; Figure 4 This is a schematic diagram of a control system for an air-driven oxygen therapy and salt therapy integrated device according to the present invention; Figure 5 This is a schematic diagram of an embodiment of the control system of the present invention; Figure 6 Schematic diagram of an embodiment of the salt aerosol branch.

[0030] Among them: 1. Gas source; 2. Oxygen production branch; 3. Salt aerosol branch. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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 ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Reference Figure 1 As shown, an embodiment of a control method for an air-driven integrated oxygen therapy and salt therapy device includes an air source, an oxygen production branch, and a salt aerosol branch. The specific control method is as follows: S1 obtains the output terminal parameters of the oxygen therapy and salt therapy integrated device, the output parameters of the oxygen production branch, the output parameters of the salt aerosol branch, and the working parameters of the salt aerosol generating unit in the current state; S2 obtains the adjustment target value; S3 adjusts the output parameters of the oxygen production branch according to the adjustment target value; S4 adjusts the salt aerosol branch output parameters according to the adjustment target value; S5 adjusts the working parameters of the salt aerosol generating unit according to the salt aerosol parameters.

[0033] In a specific embodiment, the output end parameters of the integrated oxygen therapy and salt therapy device include a second oxygen concentration and a second salt aerosol concentration; the output parameters of the oxygen production branch include an oxygen flow rate and a first oxygen concentration; the output parameters of the salt aerosol branch include a salt aerosol branch output flow rate and a first salt aerosol concentration; the working parameters of the salt aerosol generating unit include a salt solution concentration and a salt particle generation rate.

[0034] Among them, the oxygen flow rate output by the oxygen production branch is related to the opening of the pressure regulating valve at the output end of the oxygen production branch and / or the angular displacement of the stepping motor; the first oxygen concentration output by the oxygen production branch is related to the characteristics of the molecular sieve; the output flow rate of the salt aerosol branch is related to the input flow rate of the salt aerosol branch; the first salt aerosol concentration output by the salt aerosol branch is related to the concentration of the salt solution, the salt particle generation rate, and the input flow rate of the salt aerosol branch; the salt particle generation rate is related to the working voltage of the salt particle generation module.

[0035] The salt aerosol branch input flow rate uses different control parameters depending on the gas source type, specifically: In one approach, if the salt aerosol branch and the oxygen production branch use the same gas source, a second pressure regulating valve and / or a second stepping motor is provided between the gas source and the salt aerosol branch, and the air flow input to the salt aerosol branch is adjusted by controlling the opening of the second pressure regulating valve and / or the angular displacement of the stepping motor; Alternatively, if the salt aerosol branch uses an independent air source, which may be a blower or fan, the air flow input into the salt aerosol branch is adjusted by controlling the speed of the blower or fan through input voltage.

[0036] The opening of the pressure regulating valve is controlled by the input current, the angular displacement of the stepping motor is controlled by the input pulse signal, and the salt particle generation rate is controlled by the input voltage.

[0037] Specifically, the salt particle generation module can form salt particles by cutting and grinding solid salt ore with a cutter, and the cutter speed is controlled by controlling the input voltage of the cutter to adjust the salt particle generation rate; The salt particle generation module can also atomize the salt solution into salt mist for the salt mist generation module, and then dry the salt mist to form solid salt particles. The atomization rate is controlled by controlling the input voltage of the salt mist generation module to achieve the regulation of the salt particle generation rate.

[0038] Specifically, the target value for adjustment includes the target value for oxygen flow rate adjustment and the target value for salt aerosol concentration adjustment. It is possible to adjust only the oxygen flow rate output by the oxygen production branch, such as adjusting the oxygen flow rate output by the oxygen production branch from 2L / min to 5L / min while keeping the oxygen concentration and salt aerosol concentration at the output end of the oxygen therapy and salt therapy integrated device unchanged. It is also possible to keep the oxygen flow rate output by the oxygen production branch and the oxygen concentration at the output end of the oxygen therapy and salt therapy integrated device unchanged, while keeping the salt aerosol concentration at the output end of the oxygen therapy and salt therapy integrated device unchanged, such as increasing the salt aerosol concentration at the output end from 10μg / m 3 Adjusted to 20 μg / m 3 ; It can also adjust the oxygen flow rate of the oxygen production branch output and the salt aerosol concentration at the output end of the oxygen therapy and salt therapy equipment at the same time, such as adjusting the oxygen flow rate from 2L / min to 5L / min and the salt aerosol concentration at the output end from 10μg / m 3 Adjusted to 20 μg / m 3 .

[0039] In this example, the adjusted value is the adjustment target value.

[0040] In this embodiment, a first electromagnetic pressure regulating valve and / or a first stepper motor, a first flow sensor, and a first oxygen concentration sensor are sequentially arranged between the oxygen production unit and the mixing section of the oxygen production branch. The oxygen prepared by the oxygen production unit passes through the first electromagnetic pressure regulating valve and / or the first stepper motor, the first flow sensor, and the first oxygen concentration sensor in sequence and then enters the mixing section to be mixed with the salt aerosol. The oxygen flow rate output by the oxygen production branch is adjusted by the opening of the electromagnetic pressure regulating valve or the angular displacement of the stepper motor to reach the set target value.

[0041] In step S4, only the oxygen flow rate is adjusted to the target value, and the specific steps of maintaining the oxygen concentration and salt aerosol concentration at the output end of the oxygen therapy and salt therapy integrated device unchanged are as follows: S401 constructs a relationship model between the oxygen concentration at the output end of the oxygen therapy and salt therapy integrated device and the output flow of the oxygen production branch and the output flow of the salt aerosol branch; S402 calculates the target value of the output flow rate of the salt aerosol branch according to the target value of the oxygen flow rate adjustment, the oxygen concentration output by the equipment, and the oxygen concentration output by the oxygen production branch; S403 adjusts the air flow rate input to the salt aerosol branch according to the flow rate target value output by the salt aerosol branch; In step S401, a relationship model is constructed based on the law of conservation of mass and Dalton's law of partial pressure of gases to obtain the formula for the oxygen concentration at the output end of the integrated oxygen therapy and salt therapy device: Where: C O2 Q is the oxygen concentration at the output end, which is the volume percentage of pure oxygen in the total gas; O2 Q is the oxygen flow rate output from the oxygen production branch, in L / min; salt is the output flow of the salt aerosol branch, unit is L / min; the oxygen concentration in the air is 21%.

[0042] The details of step S5 in this embodiment are: S501 builds a salt aerosol concentration relationship model output by the oxygen therapy and salt therapy integrated equipment; S502 calculates a target value of the salt particle generation rate in the salt aerosol generation module based on the oxygen flow rate output by the oxygen production branch and the output flow rate of the salt aerosol branch; S503 adjusts the operating voltage of the salt aerosol generating module so that the salt particle generation rate reaches the target value.

[0043] Furthermore, in step S501, the salt particle generation module in the salt aerosol branch adopts a device that atomizes the salt solution into salt mist and then dries the salt mist to form solid salt particles. According to the law of conservation of mass, the concentration formula of the salt sol generated is: Where: C is the concentration of salt aerosol generated; Q g is the atomization rate, Q air is the ventilation flow; C Y is the concentration of the salt solution, which means the percentage of the mass of salt to the total mass of the salt solution; In this embodiment, according to the unit conversion, 1m 3 =1000L, the salt aerosol concentration formula output from the salt aerosol branch can be obtained as: Where: C salt The dry salt aerosol concentration output by the salt aerosol branch, in μg / m 3 ;Q gis the atomization rate, in μg / min; Q salt is the output flow of the salt aerosol branch, in L / min; C Y is the concentration of the salt solution, which means the percentage of the mass of salt to the total mass of the salt solution; 1m 3 =1000L unit conversion; According to the law of conservation of mass and Dalton's law of gas partial pressure, the formula for the salt aerosol concentration at the output end of the oxygen therapy and salt therapy integrated equipment is established as follows: Where: C S Q is the salt aerosol concentration at the output end of the oxygen therapy and salt therapy equipment; salt is the output flow of the salt aerosol branch; C salt The dry salt aerosol concentration output by the salt aerosol branch, in μg / m 3 ;Q O2 The oxygen flow rate output from the oxygen production branch; Substituting the concentration formula (3) for salt aerosol generation into (4) we obtain: Where: C S is the salt aerosol concentration at the output end, in μg / m 3 ;Q g is the salt aerosol generation unit atomization rate, in μg / min; C Y is the concentration of the salt solution, which indicates the percentage of the mass of salt in the total mass of the salt solution; Q salt is the output flow of the salt aerosol branch, in L / min; Q O2 The oxygen flow rate output from the oxygen production branch, in L / min; 1m 3 =1000L unit conversion.

[0044] It is known that the salt particle generation module in the salt aerosol branch can also use a device that forms salt particles by cutting and grinding solid salt ore with a cutter. The dry solid salt ore does not contain water, so the generated salt aerosol can be directly expressed as: Where: C is the concentration of salt aerosol generated; Q g is the salt particle generation rate, Q air is the ventilation flow.

[0045] According to the principle that a cutter cuts and grinds salt ore to form salt particles, it can be known that the salt particle generation rate is controlled by the cutter speed, and the cutter speed is controlled by the operating voltage.

[0046] Reference Figure 2In another control scheme shown, the steps for changing only the salt aerosol concentration while keeping the oxygen flow output unchanged are as follows: S6 obtains the salt aerosol concentration adjustment target value; S7 obtains the target value of the salt aerosol concentration output by the salt aerosol outlet branch according to the oxygen flow output by the oxygen production branch and the output flow of the salt aerosol branch; S8 obtains a target value of the salt particle generation rate according to the salt solution concentration, the target value of the salt aerosol concentration output by the salt aerosol branch, and the output flow rate of the salt aerosol branch; S9 adjusts the operating voltage of the salt aerosol generation module so that the salt particle generation rate reaches the target value.

[0047] Reference Figure 3 In another control scheme shown, when both the oxygen flow rate and the salt aerosol concentration change, the oxygen flow rate and the oxygen concentration are prioritized. The specific adjustment steps are: S10 obtains an oxygen flow rate adjustment target value and a salt aerosol concentration adjustment target value; S11 adjusts the oxygen flow rate output by the oxygen production branch and the output flow rate of the salt aerosol branch according to steps S3 and S4; S12 adjusts the salt aerosol concentration output by the salt aerosol branch according to steps S7 to S9.

[0048] In a further embodiment, working modes can also be preset, including oxygen therapy and salt therapy coordinated mode, oxygen therapy mode, and salt therapy mode.

[0049] For example, the oxygen production branch gas source is an air compressor, and the salt aerosol branch independent gas source is a fan. When the working mode is the oxygen therapy and salt therapy coordinated mode, the oxygen production branch and the salt aerosol branch work simultaneously, and the oxygen flow rate is controlled by the pressure regulating valve and / or stepper motor at the outlet end of the oxygen production branch. The output flow rate and salt aerosol concentration of the salt aerosol branch are controlled by controlling the fan speed and salt particle generation rate of the salt aerosol branch. The oxygen output by the oxygen production branch and the salt aerosol generated by the salt aerosol branch are mixed in the mixing part and then output, finally obtaining the set oxygen concentration and salt aerosol concentration at the output end of the integrated device; When the working mode is selected as oxygen therapy mode, the salt aerosol branch is powered off and only the oxygen generation branch works, which reduces the influx of air into the salt aerosol branch and can provide patients with higher concentration oxygen therapy.

[0050] When the working mode is selected as salt therapy mode, the oxygen generation branch stops working and only the salt aerosol branch works. The gas source only supplies gas to the salt aerosol branch, reducing the mixing with the oxygen output by the oxygen generation branch. Therefore, the salt aerosol concentration will not be diluted, and a higher concentration of salt aerosol can be provided to the patient for treatment.

[0051] It can be known that, in this embodiment, the salt aerosol branch can also use the air compressor of the oxygen production branch as an air source, by setting a second pressure regulating valve and / or a second stepper motor between the salt aerosol branch and the air compressor. When entering the salt therapy mode, the air compressor is turned off to ventilate the oxygen production unit in the oxygen production circuit, and the air compressor only ventilates the salt aerosol branch through the second pressure regulating valve and / or the second stepper motor.

[0052] Reference Figures 4 to 6 As shown, an embodiment of an air-driven oxygen therapy and salt therapy integrated device control system is used to implement the control method of the present invention, including a detection module, a control module, an interaction module, an air source 1, an oxygen production branch 2, a salt aerosol branch 3 and a mixing unit; The interactive module is connected to the control module to realize human-computer interaction, display the current operating parameters of the equipment, and set the parameters to adjust the target value through the interactive module; The detection module includes a voltage feedback unit, a current feedback unit, a flow acquisition unit, and a concentration acquisition unit. The voltage feedback unit measures and feeds back the operating voltage of each component of the oxygen therapy and salt therapy integrated device in real time; the flow acquisition unit is used to obtain the oxygen flow signal output by the oxygen production branch 2 and the flow signal output by the salt aerosol branch 3 collected by the flow sensor, and transmit the collected signals to the control module; the concentration acquisition unit is used to obtain the oxygen concentration signal output by the oxygen production branch 2 and the salt aerosol concentration signal output by the salt aerosol branch 3, and the oxygen concentration signal and salt aerosol concentration signal at the output end of the oxygen therapy and salt therapy integrated device collected by the oxygen concentration sensor, and transmit the collected signals to the control module; The control module includes a data processing unit and an adjustment unit. The data processing unit is used to receive the signals collected by the detection module and the parameters set by the interaction module, and perform calculations on the acquired signals. The adjustment unit sends an adjustment signal based on the processing results of the data processing unit to adjust the operating parameters of the oxygen generation branch 2 and the salt aerosol branch 3. The air source 1 is used to provide fresh air for the oxygen production branch 2 and the salt aerosol branch 3; The mixing section is connected to the oxygen production branch 2 and the salt aerosol branch 3. The oxygen produced by the oxygen production branch 2 and the salt aerosol produced by the salt aerosol branch 3 are mixed in the mixing section and then output for the patient to inhale for oxygen therapy and salt therapy at the same time.

[0053] For example, refer to Figures 4 to 6 As shown, the oxygen production branch 2 and the salt aerosol branch 3 use the same gas source 1, and the salt particle generation module in the salt aerosol branch 3 uses a salt mist generator to atomize the salt solution into salt mist, and then dries the salt mist to form a device of solid salt particles. The regulation of oxygen flow is used as an example for explanation; The specific process is as follows: the detection module collects the working current of the first pressure regulating valve and the second pressure regulating valve, the working voltage of the salt spray generator, the flow of the first flow sensor and the second flow sensor, the concentration information of the first oxygen concentration sensor and the first salt aerosol concentration sensor, the concentration information of the second oxygen concentration sensor at the output end, and the concentration information of the second salt aerosol concentration sensor, and transmits the collected information to the control module, which processes the received information and displays it on the interactive module.

[0054] When it is necessary to adjust the oxygen flow rate output by the oxygen production branch 2 while maintaining the oxygen concentration and salt aerosol concentration at the output end of the integrated device unchanged, the user sets the oxygen flow rate target value on the interactive module. After receiving the target value, the control module calculates the opening target value and the operating current target value of the first pressure regulating valve, the opening target value and the operating current target value of the second pressure regulating valve, and the operating voltage target value of the salt spray generator, and sends the adjusted parameter target values ​​to the adjustment module. The adjustment module adjusts the operating current of the first pressure regulating valve, the operating current of the second pressure regulating valve, and the operating voltage of the salt spray generator to the required target values ​​based on the received parameter adjustment target values, so that the oxygen flow rate reaches the set target value, while the oxygen concentration and salt aerosol concentration at the output end of the device remain unchanged.

[0055] In a further embodiment, according to the above adjustment method, the working parameters of the oxygen therapy and salt therapy integrated device can also be preset, and the output oxygen flow of the oxygen production branch 2-salt aerosol concentration setting gear parameter is set. For example, the oxygen production branch outputs a maximum oxygen flow of 5L, the salt aerosol branch uses the air compressor of the oxygen production branch as the gas source, a second pressure regulating valve is provided between the salt aerosol generation unit and the air compressor, the salt particle generation module in the salt aerosol branch uses a salt mist generator and an evaporator, and a first pressure regulating valve is provided at the outlet end of the oxygen production branch; the oxygen flow is set to 5 gears according to 1-5L, and the salt aerosol concentration is set to 5μg / m 3 , 10 μg / m 3 , 15 μg / m 3 , 20 μg / m 3 , 25 μg / m 3 Set to 5 gears and set according to the preset working parameters shown in Table 1: Table 1 Comparison table of oxygen flow rate output from single-source oxygen production branch and salt aerosol concentration at the output of the equipment

[0056] The first row indicates the oxygen flow rate output from the oxygen production branch, which are 1L, 2L, 3L, 4L, and 5L for gears 1 to 5 respectively; the first column indicates the salt aerosol concentration specification, which are 5μg / m 3 , 10 μg / m3 , 15 μg / m 3 , 20 μg / m 3 , 25 μg / m 3 .

[0057] In Table 1, I n To control the driving current of the first pressure regulating valve opening value, n is 1, 2, 3...; I n ' is the driving current for controlling the opening value of the second pressure regulating valve, n is 1, 2, 3...; V n is the driving voltage of the salt spray generator, and n is 1, 2, 3...

[0058] The oxygen production branch flow rate can also be 6L, 10L and other specifications. Depending on the application scenario, the salt aerosol concentration can also be 3μg / m 3 , 30 μg / m 3 and other specifications.

[0059] The salt aerosol branch can also use an independent air source to drive the salt aerosol. The independent source can be a blower or fan. Taking the blower as an example, refer to the preset parameters shown in Table 2 for setting: Table 2 Comparison table of oxygen flow rate output from independent gas source oxygen production branch and salt aerosol concentration at the equipment output

[0060] The first row indicates the oxygen flow rate output from the oxygen production branch, which are 1L, 2L, 3L, 4L, and 5L for gears 1 to 5 respectively; the first column indicates the salt aerosol concentration specification, which are 5μg / m 3 , 10 μg / m 3 , 15 μg / m 3 , 20 μg / m 3 , 25 μg / m 3 .

[0061] In Table 2, I n To control the driving current of the first pressure regulating valve opening value, n is 1, 2, 3...; I n ' is the driving current for controlling the opening value of the second pressure regulating valve, n is 1, 2, 3...; V n is the driving voltage of the salt aerosol branch fan, n is 1, 2, 3...; V n ′ is the driving voltage of the salt spray generator, and n is 1, 2, 3...

[0062] By presetting the working parameters of different gears such as oxygen flow rate and salt aerosol concentration, it is possible to quickly adjust the output parameters when it is necessary to change them, avoiding the intermediate calculation and adjustment process.

[0063] Although the preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms of specific changes without departing from the scope of protection of the invention and the claims. These all fall within the scope of protection of the present invention.

Claims

1. A method for controlling an air-driven oxygen therapy and salt therapy integrated device, characterized in that: The system comprises an air source, an oxygen production branch, a salt aerosol branch and a mixing unit. The air source provides fresh air for the oxygen production branch and the salt aerosol branch. The control method comprises the following steps: S1 obtains the output terminal parameters of the oxygen therapy and salt therapy integrated device, the output parameters of the oxygen production branch, the output parameters of the salt aerosol branch, and the working parameters of the salt aerosol generating unit in the current state; S2 obtains the adjustment target value; S3 adjusts the output parameters of the oxygen production branch according to the adjustment target value; S4 adjusts the salt aerosol branch output parameters according to the adjustment target value; S5 adjusts the working parameters of the salt aerosol generating unit according to the salt aerosol parameters.

2. The oxygen therapy and salt therapy integrated equipment control method according to claim 1, characterized in that: In step S1, the output end parameters of the integrated oxygen therapy and salt therapy device include a second oxygen concentration and a second salt aerosol concentration; the output parameters of the oxygen production branch include an oxygen flow rate and a first oxygen concentration; the output parameters of the salt aerosol branch include a salt aerosol branch output flow rate and a first salt aerosol concentration; and the operating parameters of the salt aerosol generating unit include a salt solution concentration and a salt particle generation rate.

3. The method for controlling an integrated oxygen therapy and salt therapy device according to claim 1, wherein: In step S2, the adjustment target values ​​include an oxygen flow adjustment target value and a salt aerosol concentration adjustment target value; in step S3, the oxygen flow output from the oxygen production branch is adjusted to reach the set target value by adjusting the opening of the electromagnetic pressure regulating valve or the angular displacement of the stepping motor.

4. The method for controlling an integrated oxygen therapy and salt therapy device according to claim 3, wherein: In step S4, the specific steps of adjusting the oxygen flow rate to the target value and maintaining the oxygen concentration and salt aerosol concentration at the output end of the oxygen therapy and salt therapy integrated device unchanged are: S401 constructs a relationship model between the oxygen concentration at the output end of the oxygen therapy and salt therapy integrated device and the output flow of the oxygen production branch and the output flow of the salt aerosol branch; S402 obtains a target value for the output flow rate of the salt aerosol branch according to the oxygen flow rate adjustment target value, the oxygen concentration output by the equipment, and the oxygen concentration output by the oxygen production branch; S403 adjusts the air flow rate input to the salt aerosol branch according to the flow rate target value output by the salt aerosol branch; The method for controlling an integrated oxygen therapy and salt therapy device according to claim 4, wherein in step S401, a relationship model is constructed based on the law of conservation of mass and Dalton's law of gas partial pressure to obtain the formula for the oxygen concentration at the output end of the integrated oxygen therapy and salt therapy device: Where: C O2 Q is the oxygen concentration at the output end, which is the volume percentage of pure oxygen in the total gas; O2 Q is the oxygen flow rate output from the oxygen production branch, in L / min; salt is the output flow of the salt aerosol branch, unit is L / min; the oxygen concentration in the air is 21%.

5. The method for controlling an integrated oxygen therapy and salt therapy device according to claim 5, wherein: In step S403, if the salt aerosol branch and the oxygen production branch share the same air source, the salt aerosol branch is connected to the air compressor via an electromagnetic pressure regulating valve or a stepping motor, and the air flow input to the salt aerosol branch is regulated by electromagnetically adjusting the opening of the pressure regulating valve or the angular displacement of the stepping motor; Alternatively, if the salt aerosol branch is connected to an independent air source, the air flow rate input to the salt aerosol branch is adjusted by adjusting the output flow rate of the independent air source; The independent air source is a blower or fan, and the output flow rate is adjusted by adjusting the rotation speed of the blower or fan.

6. The method for controlling an integrated oxygen therapy and salt therapy device according to claim 4, wherein: The specific steps of step S5 are: S501 builds a salt aerosol concentration relationship model output by the oxygen therapy and salt therapy integrated equipment; S502 calculates a target value of the salt particle generation rate in the salt aerosol generation module based on the oxygen flow rate output by the oxygen production branch and the output flow rate of the salt aerosol branch; S503 adjusts the operating voltage of the salt aerosol generating module so that the salt particle generation rate reaches the target value.

7. The method for controlling an integrated oxygen therapy and salt therapy device according to claim 7, wherein: In step S501, according to the law of conservation of mass, the concentration formula of the salt sol is: Where: C salt The dry salt aerosol concentration output by the salt aerosol branch, in μg / m 3 ;Q g is the atomization rate, in μg / min; Q salt is the output flow of the salt aerosol branch, in L / min; C Y is the concentration of the salt solution, which means the percentage of the mass of salt to the total mass of the salt solution; 1m 3 =1000L unit conversion; According to the law of conservation of mass and Dalton's law of gas partial pressure, the formula for the salt aerosol concentration at the output end of the oxygen therapy and salt therapy integrated equipment is established as follows:

8. Among them: C S Q is the salt aerosol concentration at the output end of the oxygen therapy and salt therapy equipment; salt is the output flow of the salt aerosol branch; C salt is the dry salt aerosol concentration output by the salt aerosol branch, Q O2 The oxygen flow rate output from the oxygen production branch; Substituting the concentration formula of salt aerosol generation into the equation, we get: Where: C S The salt aerosol concentration at the output of the integrated device, in μg / m 3 ;Q g is the salt aerosol generation unit atomization rate, in μg / min; C Y is the concentration of the salt solution, which indicates the percentage of the mass of salt in the total mass of the salt solution; Q salt is the output flow of the salt aerosol branch, in L / min; Q O2 The oxygen flow rate output from the oxygen production branch, in L / min; 1m 3 =1000L unit conversion.

9. The method for controlling an integrated oxygen therapy and salt therapy device according to claim 3, wherein: The steps for changing the oxygen flow output and only the salt aerosol concentration are as follows: S6 obtains the salt aerosol concentration adjustment target value; S7 obtains the target value of the salt aerosol concentration output by the salt aerosol outlet branch according to the oxygen flow output by the oxygen production branch and the output flow of the salt aerosol branch; S8 obtains a target value of the salt particle generation rate according to the salt solution concentration, the target value of the salt aerosol concentration output by the salt aerosol branch, and the output flow rate of the salt aerosol branch; S9 adjusts the operating voltage of the salt aerosol generation module so that the salt particle generation rate reaches the target value.

10. The method for controlling the integrated oxygen therapy and salt therapy device according to claim 9, characterized in that: The adjustment steps when both the oxygen flow rate and the salt aerosol concentration are changed are: S10 obtains an oxygen flow rate adjustment target value and a salt aerosol concentration adjustment target value; S11 adjusts the oxygen flow rate output by the oxygen production branch and the output flow rate of the salt aerosol branch according to steps S3 and S4; S12 adjusts the salt aerosol concentration output by the salt aerosol branch according to steps S7 to S9.

11. An air-driven oxygen therapy and salt therapy integrated device operating mode, using the control method according to any one of claims 1 to 10 to adjust parameters, characterized in that: Including oxygen therapy and salt therapy synergistic mode, oxygen therapy mode, and salt therapy mode; In the oxygen therapy and salt therapy collaborative mode, the oxygen production branch and the salt aerosol branch operate simultaneously, and the oxygen output by the oxygen production branch and the salt aerosol output by the salt aerosol branch are mixed in the mixing section and then output for inhalation by the patient. In this mode, the oxygen flow rate and the salt aerosol concentration are adjusted according to the control method according to any one of claims 1 to 10; In the oxygen therapy mode, the salt aerosol branch is closed, and only the oxygen generation branch is turned on to provide the patient with an oxygen concentration higher than that in the oxygen therapy and salt therapy synergistic mode for oxygen therapy; In the salt therapy mode, the oxygen production branch stops working and only the salt aerosol branch is turned on to provide the patient with a salt aerosol concentration higher than that in the oxygen therapy and salt therapy synergistic mode for salt therapy.

12. An air-driven integrated oxygen therapy and salt therapy device control system, used to implement the control method according to any one of claims 1 to 10 and control the switching of the working mode according to claim 11, characterized in that: It includes a detection module, a control module, an interactive module, a gas source, an oxygen production branch, a salt aerosol branch and a mixing unit; The interactive module is used for human-computer interaction, displays the current operating parameters, and sets the parameters to adjust the target value through the interactive module; The detection module includes a voltage feedback unit, a current feedback unit, a flow acquisition unit, and a concentration acquisition unit. The voltage feedback unit measures and feeds back the operating voltage of each component of the oxygen therapy and salt therapy integrated device in real time; the flow acquisition unit is used to obtain the oxygen flow signal output by the oxygen production branch and the flow signal output by the salt aerosol branch collected by the flow sensor, and transmit the collected signals to the control module; the concentration acquisition unit is used to obtain the oxygen concentration signal output by the oxygen production branch, the salt aerosol concentration signal output by the salt aerosol branch, the oxygen concentration signal and the salt aerosol concentration signal at the output end of the oxygen therapy and salt therapy integrated device collected by the oxygen concentration sensor, and transmit the collected signals to the control module; The control module includes a data processing unit and an adjustment unit. The data processing unit is used to receive the signals collected by the detection module and the parameters set by the interaction module, and perform calculations on the acquired signals. The adjustment unit sends an adjustment signal based on the processing results of the data processing unit to adjust the operating parameters of the oxygen generation branch and the salt aerosol branch. The air source is used to provide fresh air to the oxygen production branch and the salt aerosol branch; The mixing section is connected to the oxygen production branch and the salt aerosol branch. The oxygen produced by the oxygen production branch and the salt aerosol produced by the salt aerosol branch are mixed in the mixing section and then output through the output end of the oxygen therapy and salt therapy integrated device for inhalation by the patient.

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