A method and device for supplying medical oxygen

Abstract

The present invention relates to the technical field of medical equipment, and in particular to a medical oxygen supply method and equipment, comprising: introducing oxygen into a delivery pipe; obtaining a movement trajectory of a person in an oxygen supply cabin within a first preset period and then obtaining an accommodation characteristic value; determining an air supply mode of an air supply fan blade according to the accommodation characteristic value, the air supply mode including swinging air supply by the air supply fan blade or fixed air supply by the air supply fan blade; obtaining oxygen concentrations at several points in the oxygen supply cabin within a second preset period and determining, based on the oxygen quality characteristic value, that the air supply in the oxygen supply cabin does not meet a preset standard, determining an adjustment strategy for the air supply in the oxygen supply cabin according to a closed interference characteristic coefficient, or stopping the oxygen supply and increasing the exhaust rate; the adjustment strategy including increasing the oxygen supply flow rate, or simultaneously increasing the oxygen supply flow rate and the gas filtration rate; stopping oxygen delivery and air supply delivery after the person moves out, thereby improving air supply efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a medical oxygen supply method and equipment. Background Art

[0002] An oxygen supply chamber refers to a pressure vessel that uses breathable gases such as air, oxygen or mixed gases as the working medium. People and animals in the oxygen supply chamber breathe and the working pressure in the oxygen supply chamber is adjusted. It is used for treatment, adaptive training, testing, etc. of people and animals in the oxygen supply chamber. Medical oxygen compression chambers use medical oxygen as the pressurized working medium in the oxygen supply chamber to treat people.

[0003] Medical oxygen supply refers to the provision of oxygen that meets medical standards to medical facilities.

[0004] Medical oxygen refers to oxygen specifically used for medical and clinical treatment. This oxygen is usually extracted from the air through a specific process, has high purity, and its quality and safety require strict control.

[0005] Chinese Patent Publication (Announcement) No.: CN119084802A discloses a distributed liquid oxygen source oxygen supply system, belonging to the field of oxygen supply technology. The distributed liquid oxygen source oxygen supply system includes an oxygen source box and an oxygen user terminal. The oxygen source box is equipped with two dewar bottles filled with liquid oxygen, an instrument and pipeline box, a vaporizer, and two floor scales. The two dewar bottles are connected to the vaporizer through liquid oxygen inlet and outlet valve pipelines inside the instrument and pipeline box. The vaporizer is connected to the outdoor pipeline through the pressure reducer pipeline inside the instrument and pipeline box. The outdoor pipeline is connected to each oxygen user terminal. The present invention combines sensor sensing technology, electronic control technology, and Internet technology with liquid oxygen vaporization, pressure reduction, and transportation technology to provide a new distributed liquid oxygen source oxygen supply system. It enables residents in oxygen-deficient areas of the plateau, families, hotels, offices, or other oxygen-needing people to use low-cost, high-quality medical-grade oxygen for a long time and continuously. It can be seen that although the above technical solution detects and dynamically adjusts the oxygen supply parameters based on sensors, it does not take into account the impact of the movement trajectory and number of people in the oxygen supply chamber on the oxygen concentration in the oxygen supply chamber, resulting in low efficiency of medical oxygen supply. Summary of the Invention

[0006] To this end, the present invention provides a medical oxygen supply method and equipment to overcome the problem in the prior art that the movement trajectory and number of people in the oxygen supply chamber do not take into account the impact of the oxygen concentration in the oxygen supply chamber, thereby resulting in low medical oxygen supply efficiency.

[0007] To achieve the above objectives, the present invention provides a medical oxygen supply method, comprising:

[0008] Passing oxygen into a delivery pipe, wherein an air supply blade is provided at the output end of the delivery pipe;

[0009] Obtaining an accommodation characteristic value of the oxygen supply cabin according to the movement trajectory of the personnel in the oxygen supply cabin during the first preset period; determining an air supply mode of the air supply blade according to the accommodation characteristic value, wherein the air supply mode includes swinging air supply by the air supply blade or fixed air supply by the air supply blade;

[0010] During a second preset period, the oxygen concentrations at several points in the oxygen supply cabin are obtained, the oxygen quality characteristic value of the oxygen supply cabin is calculated, and when it is determined that the air supply in the oxygen supply cabin does not meet the preset standard based on the oxygen quality characteristic value, an adjustment strategy for the air supply in the oxygen supply cabin is determined based on the closed interference characteristic coefficient, or the oxygen supply is stopped and the exhaust rate of the exhaust fan is increased based on the difference; the adjustment strategy includes increasing the oxygen supply flow rate based on the difference between a preset closed interference threshold and the closed interference characteristic coefficient, or simultaneously increasing the oxygen supply flow rate and the gas filtration rate;

[0011] Stop oxygen and gas supply after the personnel are removed.

[0012] Furthermore, the air supply mode of the air supply blade is determined according to the accommodation characteristic value, wherein:

[0013] If the accommodation characteristic value is less than the preset accommodation characteristic value, it is determined that the air supply mode of the air supply blade is fixed air supply;

[0014] If the accommodation characteristic value is greater than or equal to the preset accommodation characteristic value, determining that the air supply mode of the air supply blade is swing air supply;

[0015] The accommodation characteristic value is the average length of the movement trajectory of people in the oxygen supply cabin within a preset period.

[0016] Furthermore, the process of determining whether the air supply in the oxygen supply chamber does not meet the preset standard based on the oxygen quality characteristic value includes:

[0017] Comparing the oxygen quality characteristic value with a first preset oxygen quality threshold and a second preset oxygen quality threshold respectively;

[0018] If the oxygen quality characteristic value is less than the first preset oxygen quality threshold, it is determined that the air supply in the oxygen supply cabin does not meet the preset standard, and an adjustment strategy for the air supply in the oxygen supply cabin is determined according to the closed interference characteristic coefficient;

[0019] If the oxygen quality characteristic value is greater than or equal to the second preset oxygen quality threshold, it is determined that the air supply in the oxygen supply chamber does not meet the preset standard, the oxygen supply is stopped and the exhaust rate is increased according to the difference between the oxygen quality characteristic value and the second preset oxygen quality threshold.

[0020] Furthermore, the oxygen quality characteristic value is calculated by the following formula:

[0021]

[0022] Wherein, M is the oxygen quality characteristic value; Xi is the oxygen concentration at the i-th point; X0 is the preset average oxygen concentration, X0 = 23%; i = 1, 2, 3, ..., n; n is the total number of points; α is the first preset weight, α = 0.45; β is the second preset weight, β = 0.55.

[0023] Furthermore, the increase in the exhaust rate is positively correlated with the oxygen quality difference in the oxygen supply chamber, wherein the oxygen quality difference in the oxygen supply chamber is the difference between the oxygen quality characteristic value and the second preset oxygen quality threshold.

[0024] Furthermore, the process of determining the adjustment strategy of the gas supply in the oxygen supply cabin according to the closed interference characteristic coefficient includes:

[0025] Comparing the closed interference characteristic coefficient with the preset closed interference threshold;

[0026] If the closed interference characteristic coefficient is less than the preset closed interference threshold, determining that the adjustment strategy for the air supply in the oxygen supply cabin is to increase the oxygen supply flow rate according to the difference between the preset closed interference threshold and the closed interference characteristic coefficient;

[0027] If the closed interference characteristic coefficient is greater than or equal to the preset closed interference threshold, it is determined that the adjustment strategy for the gas supply in the oxygen supply cabin is to simultaneously increase the oxygen supply flow rate and the gas filtration rate.

[0028] Furthermore, the closed interference characteristic coefficient is determined based on the proportion of the opening time of the oxygen supply cabin within a preset time period and the average activity time of the intervening personnel in the oxygen supply cabin.

[0029] Furthermore, several flow rate increasing methods are provided for increasing the oxygen supply flow rate, and each flow rate increasing method increases the oxygen supply flow rate by a different amount.

[0030] Furthermore, under the first preset condition, several correction methods are set for the oxygen supply flow, and each correction method has a different correction amplitude for the oxygen supply flow; the first preset condition is that the air pressure in the oxygen supply chamber exceeds the preset air pressure in the oxygen supply chamber after the oxygen supply flow increases.

[0031] In another aspect, the present invention provides a medical oxygen supply device for a medical oxygen supply method, comprising an oxygen supply device, a delivery pipe, an air supply fan, an electric actuator, a solenoid valve, an oxygen supply chamber, an exhaust fan, and an air filter;

[0032] Among them, the input end of the delivery pipe is connected to the oxygen supply device, the output end of the delivery pipe is connected to the oxygen supply cabin, the air supply fan is arranged at the output end of the delivery pipe, the electric actuator for driving the air supply fan is connected to the air supply fan, the solenoid valve is connected to the oxygen supply device, and the solenoid valve is used to control the opening and closing of the oxygen supply device, the exhaust fan is arranged at the lower part of the side wall of the oxygen supply cabin, and the air filter is arranged at the upper part of the side wall of the oxygen supply cabin.

[0033] Compared with the prior art, the beneficial effect of the present invention lies in that the present invention dynamically adjusts the air supply mode of the air supply blades according to the movement trajectory of the people in the oxygen supply cabin, so that the people in the oxygen supply cabin can fully breathe medical oxygen in the oxygen supply cabin; at the same time, by real-time monitoring the oxygen concentration at each point in the oxygen supply cabin and determining the air supply adjustment strategy or increasing the exhaust rate according to the oxygen quality characteristic value; accurately reflecting the sealing condition in the oxygen supply cabin through the closed interference characteristic coefficient, and making corresponding adjustments; through the coordinated work of the oxygen supply device, delivery pipe, air supply blades, solenoid valve, oxygen supply cabin, exhaust fan and air filter, a stable supply of oxygen and fresh circulation of air in the oxygen supply cabin are achieved, thereby meeting the oxygen needs of the people in the oxygen supply cabin and improving the air supply efficiency.

[0034] Furthermore, the present invention determines the air supply mode of the air supply blades based on the accommodation characteristic value, wherein the air supply mode includes swinging air supply or fixed air supply, and the air supply mode can be dynamically adjusted according to the patient's position and activity, thereby improving the efficiency of oxygen supply.

[0035] Furthermore, the present invention determines whether the air supply in the oxygen supply chamber meets the preset standards based on the oxygen quality characteristic value, accurately monitors and adjusts the oxygen concentration in the oxygen supply chamber, and ensures that the oxygen concentration in the oxygen supply chamber is always at the optimal treatment level, thereby improving the patient's treatment effect.

[0036] Furthermore, the present invention sets an oxygen quality characteristic value to evaluate the concentration of oxygen and the uniformity of oxygen distribution in the oxygen supply chamber, thereby ensuring the scientific nature of the oxygen supply chamber detection.

[0037] Furthermore, the present invention determines the adjustment strategy of the air supply in the oxygen supply cabin based on the closed interference characteristic coefficient, and evaluates the impact of the cabin door opening and the activities of the total number of people interfering in the oxygen supply cabin on the oxygen environment in the oxygen supply cabin, thereby ensuring the stability and suitability of the oxygen concentration in the oxygen supply cabin.

[0038] Furthermore, the present invention provides a closed interference characteristic coefficient to more accurately evaluate changes in the environment within the oxygen supply chamber, thereby enhancing the adaptability of medical oxygen supply.

[0039] Furthermore, the present invention provides several flow rate increasing methods for increasing the oxygen supply flow rate, and each flow rate increasing method increases the oxygen supply flow rate by a different amount, thereby achieving precise adjustment of the increase in the oxygen supply flow rate.

[0040] Furthermore, the present invention realizes precise control of medical oxygen supply by providing an oxygen supply device, a delivery pipe, an air supply fan, an electric actuator, a solenoid valve, an oxygen supply cabin, an exhaust fan, and an air filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a step diagram of a medical oxygen supply method according to an embodiment of the present invention;

[0042] Figure 2 A flow chart for determining an air supply method for an air supply blade according to an embodiment of the present invention;

[0043] Figure 3 This is a flow chart of an embodiment of the present invention for determining whether the air supply in the oxygen supply chamber meets the preset standards;

[0044] Figure 4 This is a schematic structural diagram of an apparatus for a medical oxygen supply method according to an embodiment of the present invention;

[0045] Figure 5 This is a partial enlarged view of portion A of the device for a medical oxygen supply method according to an embodiment of the present invention;

[0046] In the figure, 1. Oxygen supply device; 2. Delivery pipe; 3. Air supply fan; 4. Electric actuator; 5. Solenoid valve; 6. Oxygen supply chamber; 7. Exhaust fan; 8. Air filter. DETAILED DESCRIPTION

[0047] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are merely used to explain the present invention and are not intended to limit the present invention.

[0048] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0049] It should be pointed out that the data in this embodiment are all obtained by comprehensive analysis and evaluation of the historical test data of the present invention in the three months before this test and the corresponding historical test results. Those skilled in the art can understand that the method of determining the above-mentioned single parameter of the method of the present invention can be to select the value with the highest proportion as the preset standard parameter according to the data distribution, use weighted summation to use the obtained value as the preset standard parameter, substitute each historical data into a specific formula and use the value obtained by the formula as the preset standard parameter or other selection methods, as long as the method of the present invention can clearly define the different specific situations in the single determination process through the obtained value.

[0050] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 as well as Figure 5 As shown, they are respectively a step diagram of the medical oxygen supply method according to an embodiment of the present invention; a flow chart of determining the air supply mode of the air supply blade according to an embodiment of the present invention; a flow chart of determining whether the air supply in the oxygen supply chamber meets the preset standard according to an embodiment of the present invention; a structural schematic diagram of the equipment applicable to the medical oxygen supply method according to an embodiment of the present invention; and a partial enlarged view of part A of the equipment for the medical oxygen supply method according to an embodiment of the present invention.

[0051] An embodiment of the present invention provides a medical oxygen supply method, comprising:

[0052] Step S1, oxygen is introduced into the delivery pipe 2, wherein the output end of the delivery pipe 2 is provided with an air supply blade 3;

[0053] Step S2, obtaining an accommodation characteristic value of the oxygen supply chamber 6 based on the movement trajectory of the personnel in the oxygen supply chamber 6 within the first preset period of 7 minutes; determining an air supply mode of the air supply blade 3 based on the accommodation characteristic value, wherein the air supply mode includes swinging air supply of the air supply blade 3 or fixed air supply of the air supply blade 3;

[0054] Step S3, within the second preset period of 15 minutes, obtain the oxygen concentration at several points in the oxygen supply cabin 6, calculate the oxygen quality characteristic value of the oxygen supply cabin 6, and when it is determined that the air supply of the oxygen supply cabin 6 does not meet the preset standard based on the oxygen quality characteristic value, determine the adjustment strategy of the air supply in the oxygen supply cabin 6 according to the closed interference characteristic coefficient, or stop the oxygen supply and increase the exhaust rate of the exhaust fan 7 according to the difference; the adjustment strategy includes increasing the oxygen supply flow rate according to the difference between the preset closed interference threshold and the closed interference characteristic coefficient, or synchronously increasing the oxygen supply flow rate and the gas filtration rate;

[0055] Step S4: Stop oxygen delivery and air supply after the personnel are removed.

[0056] In this embodiment, the value range of the first preset period is (5min, 10min), and the value range of the second preset period is (5min, 20min). Preferably, the first preset period is selected as 7min, and the second preset period is selected as 15min, but the above values are not limited to this. Those skilled in the art can also adjust the values according to actual needs.

[0057] In this embodiment, the input end of the delivery pipe 2 is connected to the oxygen supply device 1 , which is a high-purity oxygen device that provides medical oxygen to the oxygen supply cabin 6 .

[0058] Specifically, the air supply mode of the air supply blade 3 is determined according to the accommodation characteristic value, wherein:

[0059] If the accommodation characteristic value is less than the preset accommodation characteristic value 15m 3 , it is determined that the air supply mode of the air supply blade 3 is fixed air supply;

[0060] If the accommodation characteristic value is greater than or equal to the preset accommodation characteristic value, it is determined that the air supply mode of the air supply blade 3 is swing air supply;

[0061] In this embodiment, the accommodation characteristic value is the total volume of the medical oxygen chamber. It can be understood that the preset accommodation characteristic value is [9m 3 , 30m 3 ] range, preferably, in this embodiment, the preset accommodation characteristic value is selected as 15m 3 .

[0062] It is understood that the fixed air supply of the air supply blades 3 means that the air supply blades 3 remain in a fixed position and direction to supply oxygen to the oxygen supply chamber 6. This air supply method is generally suitable for situations where people in the oxygen supply chamber 6 move little or not at all, so there is no need to change the direction of oxygen flow by swinging the blades.

[0063] The swinging air supply of the air supply blades 3 means that the air supply blades 3 swing, thereby changing the flow direction and distribution of oxygen. It is suitable for situations where there is a lot of movement of people in the oxygen supply cabin 6 or the movement trajectory is not fixed, and is used to meet the oxygen needs of different positions by swinging the blades.

[0064] When the air supply blade 3 swings to supply air, the electric actuator 4 operates, and at the same time, the lead screw starts to run, thereby pushing the air supply blade 3 to swing through the meshing action of the thread.

[0065] The accommodation characteristic value of the oxygen supply cabin 6 is the average length of the movement trajectory of the personnel in the oxygen supply cabin within a preset period of 7 minutes, and the length of the movement trajectory of the personnel in the oxygen supply cabin is obtained using a depth camera.

[0066] Specifically, the process of determining whether the air supply in the oxygen supply chamber does not meet the preset standards based on the oxygen quality characteristic value includes:

[0067] The oxygen quality characteristic value is compared with the first preset oxygen quality threshold value of 0.58 and the second preset oxygen quality threshold value of 0.64 respectively;

[0068] If the oxygen quality characteristic value is less than the first preset oxygen quality threshold, it is determined that the air supply in the oxygen supply cabin does not meet the preset standard, and an adjustment strategy for the air supply in the oxygen supply cabin is determined according to the closed interference characteristic coefficient;

[0069] If the oxygen quality characteristic value is greater than or equal to the second preset oxygen quality threshold, it is determined that the air supply in the oxygen supply chamber does not meet the preset standard, the oxygen supply is stopped and the exhaust rate is increased according to the difference between the oxygen quality characteristic value and the second preset oxygen quality threshold.

[0070] In this embodiment, the operation of stopping the oxygen supply is performed by controlling the electromagnetic valve 5 so that the electromagnetic valve 5 is in a closed state.

[0071] Specifically, the oxygen quality characteristic value is calculated by the following formula:

[0072]

[0073] Wherein, M is the oxygen quality characteristic value; Xi is the oxygen concentration at the i-th point; X0 is the preset average oxygen concentration, X0 = 23%; i = 1, 2, 3, ..., n; n is the total number of points; α is the first preset weight, α = 0.45; β is the second preset weight, β = 0.55.

[0074] Specifically, the process of obtaining the oxygen quality characteristic value includes:

[0075] Evenly arrange several points in the oxygen supply cabin;

[0076] Use an oxygen concentration sensor to measure each point to obtain the oxygen concentration at a single point;

[0077] The oxygen concentrations at all points are summed up and then divided by the total number of points to obtain the average oxygen concentration.

[0078] The ratio of the average oxygen concentration to the preset average oxygen concentration of 23% is multiplied by the first preset weight of 0.56, and recorded as the first evaluation value;

[0079] Calculate the difference between the oxygen concentration at each point and the average oxygen concentration, then square each difference and add them together. Divide the sum by the total number of points and take the square root to obtain the standard deviation of the oxygen concentration. Multiply the standard deviation of the oxygen concentration by the second preset weight of 0.44 to obtain the second evaluation value.

[0080] The sum of the first evaluation value and the second evaluation value is recorded as the oxygen quality characteristic value.

[0081] Specifically, the increase in the exhaust rate is positively correlated with the oxygen quality difference in the oxygen supply cabin, wherein the positive correlation is, for example, a linear positive correlation or a nonlinear positive correlation, and the linear slope of the linear positive correlation is not specifically limited. It can be understood that the greater the oxygen quality difference in the oxygen supply cabin, the greater the increase in the exhaust rate; the oxygen quality difference in the oxygen supply cabin is the difference between the oxygen quality characteristic value and the second preset oxygen quality threshold.

[0082] Specifically, the process of determining the adjustment strategy of the gas supply in the oxygen supply cabin according to the closed interference characteristic coefficient includes:

[0083] Comparing the closed interference characteristic coefficient with the preset closed interference threshold of 1.08;

[0084] If the closed interference characteristic coefficient is less than the preset closed interference threshold, determining that the adjustment strategy for the air supply in the oxygen supply cabin is to increase the oxygen supply flow rate according to the difference between the preset closed interference threshold and the closed interference characteristic coefficient;

[0085] If the closed interference characteristic coefficient is greater than or equal to the preset closed interference threshold, it is determined that the adjustment strategy for the gas supply in the oxygen supply cabin is to simultaneously increase the oxygen supply flow rate and the gas filtration rate.

[0086] In this embodiment, the preset closed interference threshold has a value range of (1.05, 1.15). Preferably, the preset closed interference threshold is selected as 1.08, but the above value is not limited thereto. Those skilled in the art can also adjust the value according to actual needs.

[0087] Specifically, the closed interference characteristic coefficient is calculated by the following formula:

[0088]

[0089] Wherein, P represents the closed interference characteristic coefficient; T1 represents the opening time of the oxygen supply cabin 6 within the preset time; T0 represents the preset time, T0=15min; ti represents the activity time of the i-th intervening person in the oxygen supply cabin, where i=1,2…n, n represents the total number of intervening persons in the oxygen supply cabin within the preset time, t0 represents the preset average activity time of the intervening persons in the oxygen supply cabin, t0=8min.

[0090] Specifically, there are several flow rate increasing methods for increasing the oxygen supply flow rate, among which:

[0091] If the closed interference difference is less than the first preset closed interference difference of 0.46, the oxygen supply flow rate is increased using the first preset flow adjustment coefficient of 1.12;

[0092] If the closed interference difference is greater than or equal to the first preset closed interference difference and less than the second preset closed interference difference of 0.73, the oxygen supply flow rate is increased using the second preset flow adjustment coefficient of 1.24;

[0093] If the closed interference difference is greater than or equal to the second preset closed interference difference, the oxygen supply flow rate is increased using a third preset flow adjustment coefficient of 1.39;

[0094] The closed interference difference is the difference between the preset closed interference threshold and the closed interference characteristic coefficient.

[0095] Specifically, under the first preset condition, several correction methods are set for the oxygen supply flow, among which:

[0096] If the pressure difference in the oxygen supply chamber is less than the first preset pressure difference in the oxygen supply chamber of 0.08 MPa, the oxygen supply flow rate is corrected using the first preset correction coefficient;

[0097] If the pressure difference in the oxygen supply chamber is greater than or equal to the first preset pressure difference in the oxygen supply chamber and less than the second preset pressure difference in the oxygen supply chamber by 0.11 MPa, the oxygen supply flow rate is corrected using the second preset correction coefficient;

[0098] If the pressure difference in the oxygen supply chamber is greater than or equal to the second preset pressure difference in the oxygen supply chamber, the oxygen supply flow rate is corrected using a third preset correction coefficient; the first preset condition is that the pressure in the oxygen supply chamber exceeds the preset oxygen supply chamber pressure by 0.2 MPa after the oxygen supply flow rate increases;

[0099] The air pressure difference in the oxygen supply cabin is the difference between the air pressure in the oxygen supply cabin after the oxygen supply flow rate increases and the preset air pressure in the oxygen supply cabin; the air pressure in the oxygen supply cabin is measured using a pressure sensor.

[0100] like Figure 4 and Figure 5 As shown, an embodiment of the present invention provides a medical oxygen supply device, including an oxygen supply device 1, a delivery pipe 2, an air supply fan 3, an electric actuator 4, a solenoid valve 5, an oxygen supply cabin 6, an exhaust fan 7 and an air filter 8;

[0101] Among them, the input end of the delivery pipe 2 is connected to the oxygen supply device 1, the output end of the delivery pipe 2 is connected to the oxygen supply cabin 6, the air supply fan 3 is arranged at the output end of the delivery pipe 2, and the electric actuator 4 for driving the air supply fan 3 is connected to the air supply fan 3, the solenoid valve 5 is connected to the oxygen supply device 1, and the solenoid valve 5 is used to control the opening and closing of the oxygen supply device 1, the exhaust fan 7 is arranged at the lower part of the side wall of the oxygen supply cabin 6, and the air filter 8 is arranged at the upper part of the side wall of the oxygen supply cabin 6.

[0102] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

[0103] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A medical oxygen supply method, characterized in that: include: Passing oxygen into a delivery pipe, wherein an air supply blade is provided at the output end of the delivery pipe; Obtaining an accommodation characteristic value of the oxygen supply cabin according to the movement trajectory of the personnel in the oxygen supply cabin during the first preset period; determining an air supply mode of the air supply blade according to the accommodation characteristic value, wherein the air supply mode includes swinging air supply by the air supply blade or fixed air supply by the air supply blade; During a second preset period, the oxygen concentrations at several points in the oxygen supply cabin are obtained, the oxygen quality characteristic value of the oxygen supply cabin is calculated, and when it is determined that the air supply in the oxygen supply cabin does not meet the preset standard based on the oxygen quality characteristic value, an adjustment strategy for the air supply in the oxygen supply cabin is determined based on the closed interference characteristic coefficient, or the oxygen supply is stopped and the exhaust rate of the exhaust fan is increased according to the difference; the adjustment strategy includes increasing the oxygen supply flow rate according to the difference between a preset closed interference threshold and the closed interference characteristic coefficient, or simultaneously increasing the oxygen supply flow rate and the gas filtration rate; wherein the difference in stopping the oxygen supply and increasing the exhaust rate of the exhaust fan according to the difference is the difference between the oxygen quality characteristic value and the second preset oxygen quality threshold; Stop oxygen and gas delivery after the personnel are removed; The accommodation characteristic value is the average length of the movement trajectory of people in the oxygen supply cabin within a preset period; The closed interference characteristic coefficient is determined based on the proportion of the oxygen supply chamber's opening time within a preset time period and the average activity time of the intervening personnel in the oxygen supply chamber; The process of obtaining the oxygen quality characteristic value includes: Evenly arrange several points in the oxygen supply cabin; Use an oxygen concentration sensor to measure each point to obtain the oxygen concentration at a single point; The oxygen concentrations at all points are summed up and then divided by the total number of points to obtain the average oxygen concentration. Multiplying the ratio of the average oxygen concentration to the preset average oxygen concentration by a first preset weight to obtain a first evaluation value; Calculate the difference between the oxygen concentration at each point and the average oxygen concentration, then square the differences and add them up. Divide the sum by the total number of points and take the square root to obtain the standard deviation of the oxygen concentration. Multiply the standard deviation of the oxygen concentration by the second preset weight to obtain the second evaluation value. The sum of the first evaluation value and the second evaluation value is recorded as the oxygen quality characteristic value.

2. The medical oxygen supply method according to claim 1, characterized in that: The air supply mode of the air supply blade is determined according to the accommodation characteristic value, wherein: If the accommodation characteristic value is less than the preset accommodation characteristic value, it is determined that the air supply mode of the air supply blade is fixed air supply; If the accommodation characteristic value is greater than or equal to the preset accommodation characteristic value, it is determined that the air supply mode of the air supply blade is swing air supply.

3. The medical oxygen supply method according to claim 2, characterized in that: The process of determining whether the air supply in the oxygen supply chamber does not meet the preset standards based on the oxygen quality characteristic value includes: Comparing the oxygen quality characteristic value with a first preset oxygen quality threshold and a second preset oxygen quality threshold respectively; If the oxygen quality characteristic value is less than the first preset oxygen quality threshold, it is determined that the air supply in the oxygen supply cabin does not meet the preset standard, and an adjustment strategy for the air supply in the oxygen supply cabin is determined according to the closed interference characteristic coefficient; If the oxygen quality characteristic value is greater than or equal to the second preset oxygen quality threshold, it is determined that the air supply in the oxygen supply chamber does not meet the preset standard, the oxygen supply is stopped and the exhaust rate is increased according to the difference between the oxygen quality characteristic value and the second preset oxygen quality threshold.

4. The medical oxygen supply method according to claim 3, characterized in that: The oxygen quality characteristic value is calculated by the following formula: , Where, M is the oxygen quality characteristic value; X i is the oxygen concentration at the i-th point; X0 is the preset average oxygen concentration, X0=23%; i=1, 2, 3, ..., n; n is the total number of points; α is the first preset weight, α=0.45; β is the second preset weight, β=0.

55.

5. The medical oxygen supply method according to claim 4, characterized in that: The increase in the exhaust rate is positively correlated with the oxygen quality difference in the oxygen supply chamber, wherein the oxygen quality difference in the oxygen supply chamber is the difference between the oxygen quality characteristic value and the second preset oxygen quality threshold.

6. The medical oxygen supply method according to claim 5, characterized in that: The process of determining the adjustment strategy of the gas supply in the oxygen supply cabin according to the closed interference characteristic coefficient includes: Comparing the closed interference characteristic coefficient with the preset closed interference threshold; If the closed interference characteristic coefficient is less than the preset closed interference threshold, determining that the adjustment strategy for the air supply in the oxygen supply cabin is to increase the oxygen supply flow rate according to the difference between the preset closed interference threshold and the closed interference characteristic coefficient; If the closed interference characteristic coefficient is greater than or equal to the preset closed interference threshold, it is determined that the adjustment strategy for the gas supply in the oxygen supply cabin is to simultaneously increase the oxygen supply flow rate and the gas filtration rate.

7. The medical oxygen supply method according to claim 6, characterized in that: There are several flow rate increasing methods for increasing the oxygen supply flow rate, and each flow rate increasing method has a different increase in the oxygen supply flow rate.

8. The medical oxygen supply method according to claim 7, characterized in that: Under the first preset condition, several correction methods are set for the oxygen supply flow, and each correction method has a different correction amplitude for the oxygen supply flow; the first preset condition is that after the oxygen supply flow increases, the air pressure in the oxygen supply chamber exceeds the preset air pressure in the oxygen supply chamber.

9. A medical oxygen supply device suitable for the medical oxygen supply method according to any one of claims 1 to 8, characterized in that: It includes oxygen supply device, delivery pipe, air supply fan blade, electric actuator, solenoid valve, oxygen supply cabin, exhaust fan and air filter; Among them, the input end of the delivery pipe is connected to the oxygen supply device, the output end of the delivery pipe is connected to the oxygen supply cabin, the air supply fan is arranged at the output end of the delivery pipe, the electric actuator for driving the air supply fan is connected to the air supply fan, the solenoid valve is connected to the oxygen supply device, and the solenoid valve is used to control the opening and closing of the oxygen supply device, the exhaust fan is arranged at the lower part of the side wall of the oxygen supply cabin, and the air filter is arranged at the upper part of the side wall of the oxygen supply cabin.

Images