Intelligent medical gas heating constant-temperature system

Abstract

The invention provides an intelligent medical gas warming and heating constant temperature system, and relates to the technical field of gas warming and heating constant temperature, and the system is characterized in that a temperature controller is in communication connection with a pipeline heating device; the pipeline heating device is used for heating gas in the pipeline and comprises a plurality of heating sleeves, and all the heating sleeves are uniformly arranged on the outer wall of the pipeline; the temperature controller is used for executing the following steps that the corresponding required heat Q < 1 > within the unit time period delta t when the gas temperature in the pipeline is maintained to be T < set > is determined; the number NUM of the started heating jackets is determined according to the Q < 1 >, the maximum heat conduction coefficient eta < max > of the heating jackets and the corresponding working current I < 1 > at the eta < max >; a pipeline heating device is controlled to start NUM heating sleeves; the working current of the pipeline heating device is controlled according to the gas conveying flow velocity parameter in the pipeline; the method can meet the strict requirements of scenes such as intensive care and surgical anesthesia on gas temperature precision.

Description

Technical Field

[0001] The present invention relates to the technical field of gas heating and constant temperature technology, and in particular to an intelligent medical gas heating and constant temperature system. Background Art

[0002] In the field of medical gas delivery (such as oxygen, anesthetic gas, etc.), maintaining the constancy of gas temperature is crucial to patient safety and treatment effectiveness. Traditional medical gas heating systems mostly use a single heating element with a simple temperature control device, which has the following technical defects: 1) The temperature control accuracy is insufficient, making it difficult to cope with ambient temperature fluctuations and changes in gas flow rate; 2) The working mode of the heating unit is rigid, either running at full power resulting in excessive energy consumption, or insufficient power causing temperature fluctuations; 3) Continuous high current operation can easily cause aging of the heating element and shorten the service life of the equipment; 4) Uneven heating of the pipeline can easily produce local high or low temperature areas, affecting gas quality. Although there are improved solutions using PID control algorithms in the existing technology, they have not been able to effectively solve the dynamic thermal balance problem under multi-parameter coupling, especially when responding to sudden changes in gas flow, there is a response hysteresis phenomenon, which makes it difficult to meet the stringent requirements for gas temperature accuracy in scenarios such as intensive care and surgical anesthesia. Summary of the Invention

[0003] In view of the above technical problems, the technical solution adopted by the present invention is:

[0004] According to the present application, an intelligent medical gas heating and constant temperature system is provided, the system comprising:

[0005] A temperature controller and a pipeline heating device; wherein the temperature controller is in communication with the pipeline heating device; the pipeline heating device is used to heat the gas in the pipeline, and the pipeline heating device includes a plurality of heating sleeves, all of which are evenly arranged on the outer wall of the pipeline;

[0006] The temperature controller is used to perform the following steps:

[0007] S100, obtain pipeline parameters G, gas parameters J, environmental parameters H and gas set temperature T set ;

[0008] S200, according to G, J, H and T set , determine to maintain the gas temperature in the pipeline at T set The required heat Q1 corresponding to the unit time period Δt;

[0009] S300, based on Q1, the maximum thermal conductivity of the heating jacket η max And in η max The corresponding working current I1 determines the number of heating sleeves to be started NUM;

[0010] S400, control the pipeline heating device to start NUM heating jackets;

[0011] S500, controlling the operating current of the pipeline heating device according to the gas delivery flow rate parameter in the pipeline.

[0012] Furthermore, step S200 includes the following steps:

[0013] S210, according to G, J, H and T set , construct T set The corresponding target demand heat characteristic vector A = (G, J, H, T set ); where G = (G1, G2, ..., G a ,…,G b ), a=1, 2, …, b; G a is the ath pipeline parameter, b is the number of pipeline parameters; J=(J1,J2,…,J c ,…,J d ), c=1, 2,…, d; J c is the cth gas parameter, d is the number of gas parameters; H = (H1, H2, ..., H e ,…,H f ), e=1, 2,…, f; H e is the e-th environmental parameter, f is the number of environmental parameters;

[0014] S220, obtain a preset standard required heat characteristic vector list B = (B1, B2, ..., B i ,…,B n ), i = 1, 2, ..., n; where B i is the i-th preset standard heat demand feature vector, n is the number of preset standard heat demand feature vectors; each standard heat demand feature vector corresponds to one heat demand;

[0015] S230, obtaining the similarity between each standard heat demand feature vector in A and B to obtain a similarity list γ = (γ1, γ2, ..., γ i ,…,γ n ); where γ i For A and B i similarity between

[0016] S240, obtaining target similarity γ'=MAX(γ); wherein MAX() is a preset maximum value function;

[0017] S250, the required heat corresponding to γ' is determined as Q1.

[0018] Furthermore, NUM = Q1 / (I1 2 ×R×ηmax ×Δt).

[0019] Furthermore, step S500 includes the following steps:

[0020] S510, if the gas in the pipeline has a constant flow rate, the operating current of the pipeline heating device is controlled to be I z =NUM×I1 / (1-α); where α is the power loss rate of the heating device.

[0021] Furthermore, step S500 includes the following steps:

[0022] S520: If the oxygen in the pipe is for the user to breathe, then obtain the user's oxygen inhalation time period time sequence table T = (T1, T2, ..., T p ,…,T q ), p=1, 2, ..., q; where T p is the pth oxygen inhalation time period of the user in the preset historical time period, q is the number of oxygen inhalation time periods of the user in the preset historical time period; the end time of the preset historical time period is the current time;

[0023] S530, according to T, determine the oxygen inhalation interval duration list TY corresponding to the user in the preset historical time period = (TY1, TY2, ..., TY r ,…,TY q-1 ), r=1, 2, ..., q-1; where TY r The duration of the rth oxygen inhalation interval of the user within the preset historical time period; TY r =TK r+1 -TJ r ;TK r+1 T r+1 The corresponding start time, TJ r T r The corresponding end time;

[0024] S540, based on TY, determine the average oxygen inhalation interval duration TU corresponding to the user = ∑ q-1 r＝1 TY r ;

[0025] S550, obtaining the heating hysteresis time TQ corresponding to the heating device;

[0026] S560: Whenever the user reaches the end of oxygen inhalation time, after an interval of TU-TQ, the pipeline heating device is controlled to input a working current I z .

[0027] Furthermore, the system further comprises: a humidifying device; wherein the humidifying device is used to humidify and initially heat the gas;

[0028] The humidifying device comprises a plastic humidifying bottle and a metal humidifying bottle. The plastic humidifying bottle is located above the metal humidifying bottle. The bottom of the plastic humidifying bottle is provided with a plurality of circular holes, and the plastic humidifying bottle is connected with the metal humidifying bottle through the plurality of circular holes.

[0029] Furthermore, the humidification device also includes: an air inlet pipe and an air outlet pipe; wherein, the air inlet end of the air inlet pipe is located above the plastic humidification bottle, and the air outlet end of the air inlet pipe is inserted into the interior of the metal humidification bottle; one end of the air outlet pipe is connected to the plastic humidification bottle, and the other end is used to transport the gas out.

[0030] Furthermore, the humidification device further comprises: an annular heater; the annular heater is wrapped around the outer side of the metal humidification bottle and is used for initially heating the metal humidification bottle.

[0031] Furthermore, the humidification device further comprises: a water inlet; the water inlet is arranged at the top of the plastic humidification bottle.

[0032] The present invention has at least the following beneficial effects:

[0033] The intelligent medical gas heating and constant temperature system of the present invention calculates the pipeline parameters (G), gas parameters (J), environmental parameters (H) and target temperature (T set ), establish a multi-dimensional thermodynamic model to accurately calculate the required heat Q1; intelligently allocate the number of heating jackets (NUM) based on the required heat, combined with the maximum heat transfer coefficient η max Load balancing is performed with the corresponding current I1, which can effectively reduce energy consumption under the same working conditions and avoid overload damage to the heating element. The working current is dynamically adjusted by real-time monitoring of the gas delivery flow rate, and power compensation in the event of a sudden flow change is completed in a short time to ensure that the temperature deviation is small when the flow rate fluctuates. The structural design of multiple heating jackets is evenly distributed along the circumference of the pipeline, combined with the time-sharing and zoning control strategy, so that the temperature gradient of the pipe wall is small, and the "yin and yang side" phenomenon caused by traditional unilateral heating is completely eliminated. The distributed heating jacket rotation working mode is adopted. Compared with the centralized heating device, the average daily working time of a single heating jacket is greatly reduced, thereby improving the service life of the system. It can meet the stringent requirements for gas temperature accuracy in scenarios such as intensive care and surgical anesthesia. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1A schematic structural diagram of a heating device provided in an embodiment of the present invention;

[0036] Figure 2 A schematic structural diagram of a heating jacket provided in an embodiment of the present invention;

[0037] Figure 3 A schematic structural diagram of a humidification device provided in an embodiment of the present invention;

[0038] Figure 4 A schematic diagram of the bottom structure of a plastic humidification bottle provided in an embodiment of the present invention;

[0039] Figure 5 A flow chart of the steps performed by the temperature controller provided by an embodiment of the present invention;

[0040] Explanation of symbols:

[0041] 100, heating jacket, 200, piping, 300, plastic humidification bottle, 400, metal humidification bottle, 500, ring heater, 600, air inlet pipe, 700, air outlet pipe, 800, water inlet. DETAILED DESCRIPTION

[0042] 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 those skilled in the art without making any creative efforts shall fall within the scope of protection of the present invention.

[0043] It should be noted that, based on this disclosure, those skilled in the art will appreciate that an aspect described herein can be implemented independently of any other aspect, and that two or more of these aspects can be combined in various ways. For example, any number of the aspects described herein can be used to implement an apparatus and / or practice a method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement such an apparatus and / or practice such a method.

[0044] The following is an introduction to an intelligent medical gas heating and constant temperature system, which includes:

[0045] Temperature controller and Figure 1 The pipeline heating device shown; wherein, the temperature controller is communicated with the pipeline heating device; the pipeline heating device is used to heat the gas in the pipeline 200, and the pipeline heating device includes a plurality of heating sleeves 100, and all the heating sleeves 100 are evenly arranged on the outer wall of the pipeline 200.

[0046] like Figure 2As shown, it is a schematic diagram of the structure of the heating jacket 100. The heating jacket 100 has a C-shaped structure, which is convenient for disassembling and assembling the gas delivery pipeline. It has a certain degree of flexibility and can match pipelines within a preset diameter range. It is light in weight and deformable.

[0047] In addition, the outer layer of the heating sleeve is a flexible filler with a high heat transfer coefficient on the inside and a low heat conduction coefficient on the outside. The filler surface has been specially treated to be corrosion-resistant and waterproof, and can meet disinfection requirements. There is an elastic support frame in the middle of the heating sleeve, and the support frame has a certain strength and elastic variable margin.

[0048] Furthermore, the system further comprises: Figure 3 The humidifying device shown; wherein, the humidifying device is used to humidify and initially heat the gas.

[0049] The humidification device includes a plastic humidification bottle 300 and a metal humidification bottle 400. The plastic humidification bottle 300 is located above the metal humidification bottle 400. The bottom structure of the plastic humidification bottle 300 is as follows: Figure 4 As shown, there are several circular holes, and the plastic humidification bottle 300 is connected to the metal humidification bottle 400 through the several circular holes. When the gas enters the metal humidification bottle 400, it enters the plastic humidification bottle through the circular holes. The several circular holes can increase the contact area between the gas and water, and extend the time the gas stays in the metal humidification bottle 400, thereby achieving the effect of sufficient humidification and heating; the material of the metal humidification bottle 400 can be stainless steel or aluminum alloy, which can quickly conduct heat.

[0050] Furthermore, the humidification device also includes: an air inlet pipe 600 and an air outlet pipe 700; wherein, the air inlet end of the air inlet pipe 600 is located above the plastic humidification bottle 300, and the air outlet end of the air inlet pipe 600 is inserted into the interior of the metal humidification bottle 400; one end of the air outlet pipe is connected to the plastic humidification bottle 300, and the other end is used to transport the gas out.

[0051] Furthermore, the humidification device also includes: a ring heater 500; the ring heater 500 is wrapped around the outside of the metal humidification bottle 400 and is used to initially heat the metal humidification bottle 400; since the ring heater 500 is wrapped around the outside of the metal humidification bottle, it can better heat the metal humidification bottle 400 and improve the heating efficiency.

[0052] Furthermore, the humidifying device further comprises: a water injection port 800; the water injection port 800 is provided at the top of the plastic humidifying bottle for injecting water.

[0053] Furthermore, the temperature controller is used to perform Figure 5 Steps shown:

[0054] S100, obtain pipeline parameters G, gas parameters J, environmental parameters H and gas set temperature T set .

[0055] In this embodiment, pipeline parameters include pipeline shape, pipeline cross-sectional area, pipeline thermal conductivity, etc.; gas parameters include: gas type, gas flow rate, gas specific heat capacity, etc.; environmental parameters include air thermal conductivity, ambient temperature, ambient humidity, etc.; the set temperature is the gas temperature required by the user, for example: when the gas is oxygen, the oxygen temperature required by the user to inhale oxygen.

[0056] S200, according to G, J, H and T set , determine to maintain the gas temperature in the pipeline at T set The corresponding required heat Q1 within the unit time period Δt.

[0057] In this embodiment, after obtaining a series of parameters, the gas in the pipeline is maintained at T set The corresponding heat demand per unit time can be obtained through theoretical calculation; however, theoretical calculation is based on the premise of an ideal environment, and there is a deviation between the ideal environment and the actual environment.

[0058] Furthermore, step S200 may include the following steps:

[0059] S210, according to G, J, H and T set , construct T set The corresponding target demand heat characteristic vector A = (G, J, H, T set ); where G = (G1, G2, ..., G a ,…,G b ), a=1, 2, …, b; G a is the ath pipeline parameter, b is the number of pipeline parameters; J=(J1,J2,…,J c ,…,J d ), c=1, 2,…, d; J c is the cth gas parameter, d is the number of gas parameters; H = (H1, H2, ..., H e ,…,H f ), e=1, 2,…, f; H e is the e-th environmental parameter, and f is the number of environmental parameters.

[0060] In this embodiment, after obtaining G, J, H and T set After that, G, J and H are in the form of lists, and the parameters in G, J and H as well as T set Concatenate them in sequence to get A. It should be noted that some parameters in G, J and H may be type parameters, not numerical parameters. For such parameters, one-hot encoding can be performed.

[0061] S220, obtain a preset standard required heat characteristic vector list B = (B1, B2, ..., B i ,…,B n ), i = 1, 2, ..., n; where B i is the i-th preset standard heat demand feature vector, n is the number of preset standard heat demand feature vectors; each standard heat demand feature vector corresponds to one heat demand.

[0062] In this embodiment, B can be obtained through a large number of experiments, that is, the required heat in a unit time period is measured under different combinations of pipeline parameters, gas parameters, environmental parameters and set temperatures, thereby obtaining B.

[0063] S230, obtaining the similarity between each standard heat demand feature vector in A and B to obtain a similarity list γ = (γ1, γ2, ..., γ i ,…,γ n ); where γ i For A and B i The similarity between them.

[0064] In this embodiment, it should be noted that those skilled in the art can use existing similarity determination methods to obtain the similarity between each standard demand heat feature vector in A and B according to actual needs, which will not be elaborated here.

[0065] S240, obtaining target similarity γ'=MAX(γ); wherein MAX() is a preset maximum value function.

[0066] S250, the required heat corresponding to γ' is determined as Q1.

[0067] In this embodiment, the overall gas delivery environment corresponding to the maximum similarity is most similar to the current gas delivery environment. Therefore, the required heat corresponding to γ' can be determined as Q1. This method is based on actual measured data and has higher accuracy than theoretical calculations.

[0068] S300, based on Q1, the maximum thermal conductivity of the heating jacket η max And in η max The corresponding working current I1 determines the number NUM of heating sleeves to be started.

[0069] Furthermore, NUM = Q1 / (I1 2 ×R×η max ×Δt).

[0070] In this embodiment, it can be understood that there is a corresponding maximum heat transfer coefficient for the heating jacket. In order to improve the heating efficiency, it is necessary to control the heating jacket to operate at the state of maximum heat transfer coefficient. Therefore, for different required heat amounts, it is necessary to control the start-up of different numbers of heating jackets.

[0071] S400, control the pipeline heating device to start NUM heating jackets.

[0072] In this embodiment, each heating jacket is provided with an independent control switch, and the heating jacket can be turned on and off by the control switch.

[0073] Furthermore, the NUM heating sleeves are evenly selected according to the arrangement order, so that the heating is more uniform. At the same time, the working time of each heating sleeve can be balanced to increase the service life.

[0074] S500, controlling the operating current of the pipeline heating device according to the gas delivery flow rate parameter in the pipeline.

[0075] Furthermore, step S500 may include the following steps:

[0076] S510, if the gas in the pipeline has a constant flow rate, the operating current of the pipeline heating device is controlled to be I z =NUM×I1 / (1-α); where α is the power loss rate of the heating device.

[0077] In this embodiment, if the gas in the pipeline has a constant flow rate, then the heating device can be controlled to continuously heat the gas, thereby maintaining a constant temperature of the gas in the pipeline.

[0078] Furthermore, step S500 may further include the following steps:

[0079] S520: If the oxygen in the pipe is for the user to breathe, then obtain the user's oxygen inhalation time period time sequence table T = (T1, T2, ..., T p ,…,T q ), p=1, 2, ..., q; where T p is the pth oxygen inhalation time period of the user within the preset historical time period, q is the number of oxygen inhalation time periods of the user within the preset historical time period; the end time of the preset historical time period is the current time.

[0080] In this embodiment, when the user inhales oxygen, he or she does not inhale oxygen continuously, but at a certain frequency, that is, inhale for a period of time and stop for a period of time; the control system of the ventilator can obtain the user's oxygen inhalation time period time sequence list T within the preset historical time period; the preset historical time period can be 1 minute, or can be set according to actual needs.

[0081] S530, according to T, determine the oxygen inhalation interval duration list TY corresponding to the user in the preset historical time period = (TY1, TY2, ..., TY r ,…,TY q-1 ), r=1, 2, ..., q-1; where TY r The duration of the rth oxygen inhalation interval of the user within the preset historical time period; TY r =TK r+1 -TJ r ;TK r+1 T r+1 The corresponding start time, TJ r T r The corresponding end time.

[0082] S540, based on TY, determine the average oxygen inhalation interval duration TU corresponding to the user = ∑ q-1 r＝1 TY r .

[0083] In this embodiment, the oxygen inhalation interval durations corresponding to users with different physiques are different, and the oxygen inhalation interval durations of the same user in different time periods are also different. Through the above steps, the oxygen inhalation interval durations of the users can be obtained dynamically in real time.

[0084] S550: Obtain the heating hysteresis time TQ corresponding to the heating device.

[0085] In this embodiment, it can be understood that there is a certain hysteresis in temperature control, that is, it takes a period of time for the heating device to heat up after the working current is passed through it. The heating lag time TQ corresponding to the heating device can be obtained through a large number of experiments.

[0086] S560: Whenever the user reaches the end of oxygen inhalation time, after an interval of TU-TQ, the pipeline heating device is controlled to input a working current I z .

[0087] In this embodiment, when the user reaches the end time of oxygen inhalation, the pipeline heating device is controlled to input the working current I after the interval TU-TQ. z That is, the heating device is controlled to enter the working state in advance, so that when the user starts to inhale oxygen, it just reaches a better heating state, so that the heating peak matches the user's oxygen inhalation time period, achieving the best heating effect and saving electricity at the same time.

[0088] In some embodiments, the gas in the above-mentioned pipeline can also be a liquid. When it is a liquid, it can be suitable for scenarios where users infuse liquids. It should be noted that when the gas in the above-mentioned pipeline is converted into liquid, the above-mentioned collected gas parameters also need to be changed to corresponding liquid parameters, and the calculation of the heating lag also needs to correspond to the liquid. The subsequent calculation process and control method are the same as the calculation and control method of the gas, and will not be repeated here. Regardless of whether the medium in the pipeline is gas or liquid, it falls within the scope of protection of this application.

[0089] In this embodiment, the pipeline parameters (G), gas parameters (J), environmental parameters (H) and target temperature (T set ), establish a multi-dimensional thermodynamic model to accurately calculate the required heat Q1; intelligently allocate the number of heating jackets (NUM) based on the required heat, combined with the maximum heat transfer coefficient η max Load balancing is performed with the corresponding current I1, which can effectively reduce energy consumption under the same working conditions and avoid overload damage to the heating element. The working current is dynamically adjusted by real-time monitoring of the gas delivery flow rate, and power compensation in the event of sudden flow changes is completed in a short time to ensure that the temperature deviation is small when the flow rate fluctuates. The structural design of multiple heating jackets is evenly distributed along the circumference of the pipeline, combined with the time-sharing and partitioning control strategy, so that the temperature gradient of the pipe wall is small, and the "yin and yang side" phenomenon caused by traditional unilateral heating is completely eliminated. The distributed heating jacket rotation working mode is adopted. Compared with the centralized heating device, the average daily working time of a single heating jacket is greatly reduced, thereby improving the service life of the system. It can meet the stringent requirements for gas temperature accuracy in scenarios such as intensive care and surgical anesthesia.

[0090] Furthermore, although the steps of the method of the present disclosure are described in a particular order in the accompanying drawings, this does not require or imply that the steps must be performed in this particular order, or that all steps shown must be performed to achieve the desired results. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step, and / or one step may be decomposed into multiple steps.

[0091] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should also be understood by those skilled in the art that various modifications may be made to the embodiments without departing from the scope and spirit of the present invention.

Claims

1. An intelligent medical gas heating and constant temperature system, characterized in that: The system comprises: A temperature controller and a pipeline heating device; wherein the temperature controller is in communication with the pipeline heating device; the pipeline heating device is used to heat the gas in the pipeline, and the pipeline heating device includes a plurality of heating sleeves, all of which are evenly arranged on the outer wall of the pipeline; The temperature controller is used to perform the following steps: S100, obtain pipeline parameters G, gas parameters J, environmental parameters H and gas set temperature T set ; S200, according to G, J, H and T set , determine to maintain the gas temperature in the pipeline at T set The required heat Q1 corresponding to the unit time period Δt; S300, based on Q1, the maximum thermal conductivity of the heating jacket η max And in η max The corresponding working current I1 determines the number of heating sleeves to be started NUM; S400, control the pipeline heating device to start NUM heating jackets; S500, controlling the operating current of the pipeline heating device according to the gas delivery flow rate parameter in the pipeline.

2. The intelligent medical gas heating and constant temperature system according to claim 1 is characterized in that: Step S200 includes the following steps: S210, according to G, J, H and T set , construct T set The corresponding target demand heat characteristic vector A = (G, J, H, T set ); where G = (G1, G2, ..., G a ,…,G b ), a=1, 2, …, b; G a is the ath pipeline parameter, b is the number of pipeline parameters; J=(J1,J2,…,J c ,…,J d ), c=1, 2,…, d; J c is the cth gas parameter, d is the number of gas parameters; H = (H1, H2, ..., H e ,…,H f ), e=1, 2,…, f; H e is the e-th environmental parameter, f is the number of environmental parameters; S220, obtain a preset standard required heat characteristic vector list B = (B1, B2, ..., B i ,…,B n ), i = 1, 2, ..., n; where B i is the i-th preset standard heat demand feature vector, n is the number of preset standard heat demand feature vectors; each standard heat demand feature vector corresponds to one heat demand; S230, obtaining the similarity between each standard heat demand feature vector in A and B to obtain a similarity list γ = (γ1, γ2, ..., γ i ,…,γ n ); where γ i For A and B i similarity between S240, obtaining target similarity γ'=MAX(γ); wherein MAX() is a preset maximum value function; S250, the required heat corresponding to γ' is determined as Q1.

3. The intelligent medical gas heating and constant temperature system according to claim 2 is characterized in that: NUM=Q1 / (I1 2 ×R×η max ×Δt).

4. The intelligent medical gas heating and constant temperature system according to claim 3 is characterized in that: Step S500 includes the following steps: S510, if the gas in the pipeline has a constant flow rate, the operating current of the pipeline heating device is controlled to be I z =NUM×I1 / (1-α); where α is the power loss rate of the heating device.

5. The intelligent medical gas heating and constant temperature system according to claim 3 is characterized in that: Step S500 further includes the following steps: S520: If the oxygen in the pipe is for the user to breathe, then obtain the user's oxygen inhalation time period time sequence table T = (T1, T2, ..., T p ,…,T q ), p=1, 2, ..., q; where T p is the pth oxygen inhalation time period of the user in the preset historical time period, q is the number of oxygen inhalation time periods of the user in the preset historical time period; the end time of the preset historical time period is the current time; S530, according to T, determine the oxygen inhalation interval duration list TY corresponding to the user in the preset historical time period = (TY1, TY2, ..., TY r ,…,TY q-1 ), r=1, 2, …, q-1; Among them, TY r The duration of the rth oxygen inhalation interval of the user within the preset historical time period; TY r =TK r+1 -TJ r ;TK r+1 T r+1 The corresponding start time, TJ r T r The corresponding end time; S540, based on TY, determine the average oxygen inhalation interval duration TU corresponding to the user = ∑ q-1 r＝1 TY r ; S550, obtaining the heating hysteresis time TQ corresponding to the heating device; S560: Whenever the user reaches the end of oxygen inhalation time, after an interval of TU-TQ, the pipeline heating device is controlled to input a working current I z .

6. The intelligent medical gas heating and constant temperature system according to claim 1 is characterized in that: The system further comprises: a humidifying device; wherein the humidifying device is used to humidify and initially heat the gas; The humidifying device comprises a plastic humidifying bottle and a metal humidifying bottle. The plastic humidifying bottle is located above the metal humidifying bottle. The bottom of the plastic humidifying bottle is provided with a plurality of circular holes, and the plastic humidifying bottle is connected with the metal humidifying bottle through the plurality of circular holes.

7. The intelligent medical gas heating and constant temperature system according to claim 6, characterized in that: The humidification device also includes: an air inlet pipe and an air outlet pipe; wherein the air inlet end of the air inlet pipe is located above the plastic humidification bottle, and the air outlet end of the air inlet pipe is inserted into the interior of the metal humidification bottle; one end of the air outlet pipe is connected to the plastic humidification bottle, and the other end is used to transport the gas out.

8. The intelligent medical gas heating and constant temperature system according to claim 6, characterized in that: The humidification device further comprises: an annular heater; the annular heater is wrapped around the outer side of the metal humidification bottle and is used for initially heating the metal humidification bottle.

9. The intelligent medical gas heating and constant temperature system according to claim 6, characterized in that: The humidifying device further comprises: a water inlet; the water inlet is arranged on the top of the plastic humidifying bottle.

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