CN111110978B - System and method for controlling temperature of heating pipe of breathing support equipment and breathing support equipment - Google Patents

System and method for controlling temperature of heating pipe of breathing support equipment and breathing support equipment Download PDF

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CN111110978B
CN111110978B CN201911405754.4A CN201911405754A CN111110978B CN 111110978 B CN111110978 B CN 111110978B CN 201911405754 A CN201911405754 A CN 201911405754A CN 111110978 B CN111110978 B CN 111110978B
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heating
temperature
pipeline
value
controller
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CN111110978A (en
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戴征
李蒙
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Hunan Micomme Zhongjin Medical Technology Development Co Ltd
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Hunan Micomme Zhongjin Medical Technology Development Co Ltd
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/14—Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
    • A61M16/16—Devices to humidify the respiration air
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/021—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes operated by electrical means
    • A61M16/022—Control means therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/1075—Preparation of respiratory gases or vapours by influencing the temperature
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/14—Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
    • A61M16/16—Devices to humidify the respiration air
    • A61M16/162—Water-reservoir filling system, e.g. automatic
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3368—Temperature
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/36—General characteristics of the apparatus related to heating or cooling
    • A61M2205/3653—General characteristics of the apparatus related to heating or cooling by Joule effect, i.e. electric resistance

Abstract

The invention relates to a temperature control system and method for a heating pipe of a respiratory support device and the respiratory support device. A respiratory support device heating tube temperature control system, comprising: the system comprises a controller, a turbine, an ambient temperature sensor, a pipeline temperature sensor, a heating pipe, a heating driver and a power supply; the turbine, the environment temperature sensor, the pipeline temperature sensor and the heating driver are respectively connected with the controller; the power supply respectively supplies power to the controller, the turbine and the heating driver; the heating pipe is provided with a heating wire, and the heating wire is connected with the heating driver; the pipeline temperature sensor is arranged at the tail end of the heating pipe; the controller includes a setting unit. The invention controls and adjusts the temperature control power of the whole heating pipeline through the real-time feedback of the temperature at the tail end of the heating pipeline and the ambient temperature, and finally ensures the warmth and the moistness of the airflow blown out from the tail end of the nasal oxygen tube.

Description

System and method for controlling temperature of heating pipe of breathing support equipment and breathing support equipment
Technical Field
The invention relates to the field of control of respiratory support equipment, in particular to a system and a method for controlling the temperature of a heating pipe of the respiratory support equipment and the respiratory support equipment.
Background
The respiratory support technology is an important means for treating respiratory failure, transnasal High-Flow oxygen humidification therapy (High-Flow Nasal Cannula, HFNC for short) is a novel respiratory support technology, gas which is heated and humidified is transmitted by the transnasal High-Flow oxygen therapy therapeutic apparatus, the Flow is 30-60L/Min or more, the purposes of transmitting oxygen with stable concentration, flushing an upper airway dead space and generating certain positive pressure of an end-expiratory airway are achieved, and meanwhile, the tolerance of a patient is good.
The current high-flow oxygen therapy instrument products are mainly medical products, and for some patients with lighter symptoms, hospitalization can generate high cost and occupy unnecessary medical resources, so that the household high-flow humidification oxygen therapy instrument is a direction and a trend of the market and can serve more and more household customers.
To domestic high flow humidifying oxygen therapy appearance, will guarantee travelling comfort and result of use in the use, just need use the heating pipeline, the heating pipeline plays a gas in the use and heats and moisturize the effect, makes the warm moist of the air current that gets into patient's end, prevents to produce too much comdenstion water in the pipeline because of the change of environment simultaneously in the use.
Most of the existing high-flow humidification oxygen therapy instruments in the market at present are medical instruments, and a plurality of household machine schemes are not disclosed, and most of the publications in the prior art are designed aiming at the aspects of appearance and structure, for example, patent documents with patent publication numbers of CN 304975969S, CN 110201284A and the like, and a specific heating pipeline temperature control scheme is not provided.
Patent No. ZL201710534518.7 discloses an intelligent control method and device for temperature and humidity inside a breathing machine pipeline, which comprises a breathing machine pipeline, wherein one end of the breathing machine pipeline is provided with an air inlet connected with an air outlet of a humidifier; the other end is a patient end; a thermistor is arranged at the end opening of the patient end of the pipeline; a heating guide wire and a thermistor signal wire are arranged on the outer wall of the pipeline; a first connector is arranged at the air inlet of the pipeline, a second connector is arranged at the air outlet of the humidifier, and the first connector and the second connector are electrically connected to connect the heating guide wire and the thermistor signal wire with the main control unit; still be provided with temperature and humidity sensor at the humidifier gas outlet department of breathing machine, the main control unit adjusts the heating power of heating seal wire and the humidifying power of humidifier, realizes the humidity and the temperature of control pipeline exit. However, the influence of the ambient temperature on the temperature of the gas in the duct is not considered, and there is a limitation in controlling the temperature.
Thus, the existing pipeline temperature control is insufficient and needs to be improved and improved.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a system and a method for controlling the temperature of a heating pipe of a respiratory support device and the respiratory support device, which control and regulate the temperature control power of a heating pipeline by detecting the real-time feedback of the end temperature of the heating pipeline and the ambient temperature, thereby well ensuring the use effect of the domestic respiratory support device and solving the problem of excessive condensed water in the pipeline.
In order to achieve the purpose, the invention adopts the following technical scheme:
a respiratory support device heating tube temperature control system, comprising: the system comprises a controller, a turbine, an ambient temperature sensor, a pipeline temperature sensor, a heating pipe, a heating driver and a power supply; the turbine, the environment temperature sensor, the pipeline temperature sensor and the heating driver are respectively connected with the controller; the power supply respectively supplies power to the controller, the turbine and the heating driver; the heating pipe is provided with a heating wire, and the heating wire is connected with the heating driver; the pipeline temperature sensor is arranged at the tail end of the heating pipe; the controller comprises a setting unit for setting a breath demand temperature value and a turbine outlet air flow speed value.
Preferably respiratory support equipment heating pipe temperature control system, the turbine has the turbine air inlet, ambient temperature sensor installs at the turbine air inlet.
Preferably, the heating pipe temperature control system of the respiratory support device, wherein the heating driver is a PWM driver, and is configured to control the heating power of the heating pipe according to an instruction of the controller.
A method of controlling the temperature of a heating tube of a respiratory support apparatus using the control system, comprising the steps of:
s1, setting the breath demand temperature value and the airflow speed value to the controller through the setting unit;
s2, detecting an environment temperature value of the current environment by the environment temperature sensor, detecting a pipeline temperature value of air flow in a pipeline by the pipeline temperature sensor, and respectively sending the environment temperature value and the pipeline temperature value to the controller; the controller matches a temperature compensation value in a supplementary thermometer according to the breath demand temperature value, the airflow speed value and the environment temperature value;
s3, the controller forms a pipeline temperature threshold value set according to the temperature compensation value and the breath demand temperature value; the pipeline temperature threshold value group is provided with a plurality of pipeline temperature threshold values which are arranged in a descending order;
s4, the controller respectively compares the pipeline temperature values with a plurality of pipeline temperature thresholds in the pipeline temperature threshold set, according to the comparison result, the controller controls the heating driver to control the heating wire to heat the heating pipe, and the step S2 is executed.
In the preferred method for controlling the temperature of the heating pipe of the respiratory support apparatus, a plurality of the pipeline temperature thresholds in the pipeline temperature threshold set are obtained by the following formula:
Figure GDA0003501090940000021
wherein, Ti(i ═ 1, 2, … …, a) is the ith said line temperature threshold in said set of line temperature thresholds; t isSDThe required temperature value of the nasal breathiness is obtained; t is a unit ofBCIs the temperature compensation value; a is the total data number of the pipeline temperature threshold value set; and k is control precision.
Preferably, the method for controlling the temperature of the heating pipe of the respiratory support apparatus, in step S3, further includes:
the controller matches a heating power group according to the pipeline temperature threshold group; the heating power group has a plurality of heating power values which are arranged from large to small; the number of values of the heating power set is 1 more than the number of values in the pipeline temperature threshold set.
Preferably, in the method for controlling the temperature of the heating pipe of the respiratory support apparatus, in step S4, the comparison result includes:
TGL<T1、Ti-1≤TGL<Ti、Ta≤TGL；
wherein, TGLThe temperature value of the pipeline is obtained; t is1(ii) is the first of said pipeline temperature thresholds in said set of pipeline temperature thresholds; t isi(i ═ 1, 2, … …, a) is the ith said line temperature threshold in said set of line temperature thresholds; t isaIs the a-th one of the a pipeline temperature thresholds in the pipeline temperature threshold set.
Preferably, in the method for controlling the temperature of the heating pipe of the respiratory support apparatus, the step S4 specifically includes:
when the comparison result is TGL≤T1Or Ti-1<TGL≤TiWhen the heating power is lower than the heating power set, the controller controls the heating driver to control the heating wire to heat the heating pipe at the heating power of the ith (i is 1, 2, … …, a) heating power value in the heating power set;
when the comparison result is Ta≤TGLAnd when the heating power is lower than the heating power set, the controller controls the heating driver to control the heating wire to heat the heating pipe by the heating power of the (a +1) th heating power value in the heating power set.
According to the preferable temperature control method for the heating pipe of the respiratory support equipment, the set range of the required nasal information temperature value is 31-37 ℃; the set range of the airflow speed value is 10-60L/Min.
A respiratory support apparatus includes a respiratory support apparatus heating tube temperature control system.
Compared with the prior art, the system and the method for controlling the temperature of the heating pipe of the respiratory support equipment and the respiratory support equipment provided by the invention have the advantages that the temperature control power of the whole heating pipeline is controlled and adjusted through the real-time feedback of the temperature at the tail end of the heating pipeline and the ambient temperature, the warm and moist of the air flow blown out from the tail end of the nasal oxygen tube is ensured, the use comfort and the good use effect of a patient can be improved, and excessive condensate water generated in the pipeline is avoided as much as possible in the use process.
Drawings
FIG. 1 is a block diagram of a heating pipe temperature control system according to the present invention;
FIG. 2 is a flow chart of a heating pipe temperature control method provided by the present invention.
PWM (Pulse width modulation)
Detailed Description
In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The invention provides a temperature control system for a heating pipe of a respiratory support device, which comprises: the system comprises a controller 1, a turbine 2, an ambient temperature sensor 3, a pipeline temperature sensor 4, a heating pipe 5, a heating driver 6 and a power supply 7; the turbine 2, the ambient temperature sensor 3, the pipeline temperature sensor 4 and the heating driver 6 are respectively connected with the controller 1; the power supply 7 respectively supplies power to the controller 1, the turbine 2 and the heating driver 6; the heating pipe 5 is provided with a heating wire, and the heating wire is connected with the heating driver 6; the pipeline temperature sensor 4 is arranged at the tail end of the heating pipe 5; the controller 1 comprises a setting unit for setting a desired temperature value for the breathing and a value of the air flow velocity out of the turbine 2. Specifically, the controller 1 may be a processor (MCU (micro controller Unit) or a CPU (central processing Unit)) commonly used in the art, the present invention is not particularly limited, and the preferred processor chip is an MCU of the lima corporation with a model number of LPC 1788; the turbine 2 is a turbine 2 commonly used in the field of respiratory support equipment, and can output required airflow according to the instruction of the controller 1 without specific limitation; the heating pipe 5 is a heating pipe 5 commonly used in the field of respiratory support equipment, the invention is not particularly limited, the heating pipe is generally made of metal or heat-resistant plastic into a pipe shape, and the heating wire is wound on the heating pipe 5; the heating driver 6 is a driving device commonly used in the art, and can control the heating wire to operate at a certain heating power according to an instruction of the controller 1 without specific limitation, and the preferred scheme is an MCU chip + triode component, the on-off control operation power of the triode is controlled by the MCU chip, the MCU chip is a common MCU chip, and the triode is a common triode without specific limitation; the ambient temperature sensor 3 and the pipeline temperature sensor 4 are commonly used sensors in the field of temperature measurement, the present invention is not limited, and the preferable measurement accuracy is more than 0.1 ℃, wherein the position where the ambient temperature sensor 3 is installed is not limited in this embodiment, and the position where the ambient temperature value can be obtained is only required.
The breathing support equipment is provided with the humidifying water box, the humidifying water box can heat airflow according to the breath demand temperature value, but the environment temperature is mostly lower than the breath demand temperature value, so a heating pipe 5 is needed for heating; of course, the invention can also realize the heating of the airflow even if the humidifying water box does not have the heating function.
Correspondingly, the invention also provides a method for controlling the temperature of the heating pipe of the respiratory support equipment, which comprises the following steps:
s1, setting the breath demand temperature value and the airflow speed value to the controller 1 through the setting unit;
s2, the environment temperature sensor 3 detects the environment temperature value of the current environment, the pipeline temperature sensor 4 detects the pipeline temperature value of the airflow in the pipeline, and respectively sends the environment temperature value and the pipeline temperature value to the controller 1; the controller 1 matches a temperature compensation value in a supplementary thermometer according to the breath demand temperature value, the airflow speed value and the environment temperature value; in the supplementary thermometer, a plurality of groups of different temperature compensation values are set according to actual use conditions under the conditions of different breath demand temperature values, different airflow speed values and different environment temperature values;
s3, the controller 1 forms a pipeline temperature threshold value set according to the temperature compensation value and the breath demand temperature value; the pipeline temperature threshold value group is provided with a plurality of pipeline temperature threshold values which are arranged in a descending order; it should be noted that the selection embodiment of the temperature thresholds is not limited, and the selection embodiment is determined according to specific situations; the pipeline temperature threshold value set is used for multi-stage comparison control, the control precision of the control method is higher when the number of the pipeline temperature threshold values is larger, and the control precision is lower when the number of the pipeline temperature threshold values is larger, otherwise;
s4, the controller 1 compares the pipeline temperature values with a plurality of pipeline temperature thresholds in the pipeline temperature threshold group respectively, according to the comparison result, the controller 1 controls the heating driver 6 to control the heating wire to heat the heating pipe 5, and the step S2 is executed. Because the numerical arrangement of the pipeline temperature threshold value set is from small to large, the comparison of the sizes is only needed to be carried out according to the sequence. Returning to step S2 is to form a closed loop control to ensure efficient operation of the control system.
Preferably, in the present embodiment, the turbine 2 has a turbine inlet, and the ambient temperature sensor 3 is mounted on the turbine inlet. In order to facilitate the measurement of the temperature of the airflow entering the turbine 2, the ambient temperature sensor 3 is installed at the air inlet of the turbine 2, and the acquisition of the ambient temperature value is of greater reference value.
Preferably, in this embodiment, the heating driver 6 is a PWM driver, and is configured to control the heating power of the heating tube according to an instruction of the controller 1.
Preferably, in this embodiment, several of the pipeline temperature thresholds in the pipeline temperature threshold set are obtained by the following formula:
Figure GDA0003501090940000051
wherein, Ti(i ═ 1, 2, … …, a) is the ith said line temperature threshold in said set of line temperature thresholds; t isSDThe required temperature value of the nasal breathiness is obtained; t is a unit ofBCIs the temperature compensation value; a is the total data number of the pipeline temperature threshold value set; and k is control precision. The control precision is the difference value between the maximum value and the minimum value in the pipeline temperature threshold value set, and the difference value is the embodiment of a control range; the value of a is controlled singly, and the higher the value of a is, the higher the precision is; the smaller the value of k, the higher the precision. For example, the temperature value of the breath requirement is set to 33 ℃, the temperature compensation value is 5 ℃, and for precise control, the temperature compensation value can be adoptedTwo ways are as follows: firstly, the k value is set to be 1 (a relatively small number, namely, the value range of the pipeline temperature threshold value set is 33+5-0.5-33+5+0.5), the value of a is better if the value of a is larger, but the optimal value range is 3-5 in the preferred scheme; and the other is that for example, if the k value is 4, the larger the value of a, the better, the preferable value range is 7-11, and the larger the control precision is, the better.
Preferably, in this embodiment, the step S3 further includes:
the controller 1 matches a heating power group according to the pipeline temperature threshold group; the heating power group has a plurality of heating power values which are arranged from large to small; the number of values of the heating power set is 1 more than the number of values in the pipeline temperature threshold set. Specifically, the heating power value is displayed as a percentage of the rated power, for example, the heating power value is 90%, meaning 90% of the rated power; the reason why the number of heating power values in one more heating power group is one more than the number of line temperature thresholds is considered: and when the pipeline temperature value is greater than the maximum value in the pipeline temperature threshold value set, the required operation power value is obtained.
Preferably, in this embodiment, in step S4, the comparison result includes:
TGL<T1、Ti-1≤TGL<Ti、Ta≤TGL(ii) a It should be noted that these three cases are: the pipeline temperature value is smaller than the minimum value in the pipeline temperature threshold value group, the pipeline temperature value is between two adjacent pipeline temperature threshold values in the pipeline temperature threshold value group, and the pipeline temperature value is larger than the maximum value in the pipeline temperature threshold value group;
wherein, TGLThe temperature value of the pipeline is obtained; t is1(ii) is the first of said pipeline temperature thresholds in said set of pipeline temperature thresholds; t isi(i ═ 1, 2, … …, a) is the ith said line temperature threshold in said set of line temperature thresholds; t isaFor the a-th of the a line temperature thresholds, i.e. the line temperature threshold setThe maximum value in the set of pipeline temperature thresholds.
Preferably, in this embodiment, the step S4 specifically includes:
when the comparison result is TGL≤T1Or Ti-1<TGL≤TiWhen the heating power is lower than the heating power set, the controller 1 controls the heating driver 6 to control the heating wire to heat the heating pipe 5 at the heating power of the ith (i is 1, 2, … …, a) heating power value in the heating power set;
when the comparison result is Ta≤TGLWhen the heating power is lower than the heating power set, the controller 1 controls the heating driver 6 to control the heating wires to heat the heating pipe 5 with the heating power of the (a +1) th heating power value in the heating power set.
As a preferable scheme, in this embodiment, the setting range of the demanded nasal respiration temperature value is 31 to 37 ℃; the set range of the airflow speed value is 10-60L/Min.
Example 2
Setting the required temperature value of the breath as 33 ℃, the air flow speed value as 40L/Min, and the supplementary temperature table as follows:
Figure GDA0003501090940000061
Figure GDA0003501090940000071
after the machine starts treatment, the current environmental temperature value is detected firstly, the controller 1 obtains the temperature compensation value Z ℃ of the nasal oxygen tube part according to the above table, and the environmental temperature value is also collected and monitored in real time. Then, detecting the end temperature of the pipeline in real time, setting the control precision k to be 2, setting the total number a of data of the pipeline temperature threshold value set to be 5, and judging according to the total number a: 1. when the temperature at the tail end of the pipeline temperature value is lower than (33+ Z-1) DEG C, the heating pipe 5 takes 92% of heating power value as running power to carry out rapid heating; 2. when the pipeline temperature value is less than (33+ Z-0.5) DEG C (at the moment, the pipeline temperature value is greater than (33+ Z-1) DEG C), the heating pipe 5 is heated by the operation power with the heating power value of 72%; 3. when the pipeline temperature value is less than (33+ Z +0.5) DEG C, the heating pipe 5 is heated by the operation power with the heating power value of 56%, and the heating rate is reduced; 4. when the temperature value of the pipeline is less than (33+ Z +1) DEG C, the heating pipe 5 is heated by the operation power with the heating power value of 20%; 5. when the temperature value of the pipeline is greater than (33+ Z +1) DEG C, the heating pipe 5 is heated by the operation power with the heating power value of 5%; therefore, the power of the heating pipe 5 can be dynamically adjusted to achieve the effect of controlling the temperature, so that the temperature of the tail end of the nasal oxygen tube reaches the preset temperature. The threshold value of the line temperature of (33+ Z) ° c is not compared here, and the meaning of the overall system is not affected in order to omit the environment.
Example 3
A respiratory support apparatus includes a respiratory support apparatus heating tube temperature control system.
The respiratory support equipment mainly comprises a humidifying oxygen therapy instrument main body, a humidifying water box, a heating pipe and an external pipeline, wherein the water box and the heating pipe form a main body structure of a humidifying part, and the external pipeline mainly comprises a heating pipeline and a nasal oxygen tube.
Air and oxygen are mixed and enter the water box after passing through the turbine 2, the heating pipe is used for continuously heating to take away a part of water vapor, and then the water vapor is heated and insulated by the heating pipeline and then supplied to a patient. The invention mainly introduces a method for controlling the heating temperature of a heating pipeline by empirical data and monitoring the temperature at the tail end of the pipeline and the ambient temperature, so as to ensure that a user can obtain airflow at a required temperature in a nasal oxygen tube when using the nasal oxygen tube.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.

Claims (9)

1. A method of controlling a system for controlling a temperature of a heating tube of a respiratory support device, the system comprising: the system comprises a controller, a turbine, an ambient temperature sensor, a pipeline temperature sensor, a heating pipe, a heating driver and a power supply; the turbine, the environment temperature sensor, the pipeline temperature sensor and the heating driver are respectively connected with the controller; the power supply respectively supplies power to the controller, the turbine and the heating driver; the heating pipe is provided with a heating wire, and the heating wire is connected with the heating driver; the pipeline temperature sensor is arranged at the tail end of the heating pipe; the controller comprises a setting unit, a control unit and a control unit, wherein the setting unit is used for setting a breath demand temperature value and a turbine outlet airflow speed value;
the control method of the heating pipe temperature control system of the respiratory support equipment comprises the following steps:
s1, setting the snout requirement temperature value and the air flow speed value to the controller through the setting unit;
s2, detecting an environment temperature value of the current environment by the environment temperature sensor, detecting a pipeline temperature value of air flow in a pipeline by the pipeline temperature sensor, and respectively sending the environment temperature value and the pipeline temperature value to the controller; the controller matches a temperature compensation value in a supplementary thermometer according to the breath demand temperature value, the airflow speed value and the environment temperature value;
s3, the controller forms a pipeline temperature threshold value set according to the temperature compensation value and the breath demand temperature value; the pipeline temperature threshold value group is provided with a plurality of pipeline temperature threshold values which are arranged in a descending order;
s4, the controller compares the pipeline temperature values with a plurality of pipeline temperature thresholds in the pipeline temperature threshold group respectively, the controller controls the heating driver to control the heating wire to heat the heating pipe according to the comparison result, and the step S2 is executed.
2. The method of claim 1, wherein the turbine has a turbine inlet, and the ambient temperature sensor is mounted at the turbine inlet.
3. The method of claim 1, wherein the heating driver is a PWM driver for controlling the heating power of the heating tube according to the instructions of the controller.
4. The method of controlling a respiratory support apparatus heating pipe temperature control system according to claim 1, wherein a number of the circuit temperature thresholds in the set of circuit temperature thresholds are obtained by the following formula:
Figure FDA0003501090930000011
wherein, Ti(i ═ 1, 2, … …, a) is the ith said line temperature threshold in said set of line temperature thresholds; t is a unit ofSDThe required temperature value of the nasal breathiness is obtained; t isBCIs the temperature compensation value; a is the total data number of the pipeline temperature threshold value set; and k is control precision.
5. The method for controlling the heating pipe temperature control system according to claim 4, wherein the step S3 further comprises:
the controller matches a heating power group according to the pipeline temperature threshold group; the heating power group has a plurality of heating power values which are arranged from large to small; the number of values of the heating power set is 1 more than the number of values in the pipeline temperature threshold set.
6. The method of claim 5, wherein in step S4, the comparison result comprises:
TGL<T1、Ti-1≤TGL<Ti、Ta≤TGL；
wherein, TGLThe temperature value of the pipeline is obtained; t is1(ii) is the first of said pipeline temperature thresholds in said set of pipeline temperature thresholds; t isi(i ═ 1, 2, … …, a) is the ith said line temperature threshold in said set of line temperature thresholds; t isaIs the a-th one of the a pipeline temperature thresholds in the pipeline temperature threshold set.
7. The method for controlling the heating pipe temperature control system of the respiratory support apparatus according to claim 6, wherein the step S4 specifically comprises:
when the comparison result is TGL≤T1Or Ti-1<TGL≤TiWhen the heating power is lower than the heating power set, the controller controls the heating driver to control the heating wire to heat the heating pipe at the heating power of the ith (i is 1, 2, … …, a) heating power value in the heating power set;
when the comparison result is Ta≤TGLAnd when the heating power is lower than the heating power set, the controller controls the heating driver to control the heating wire to heat the heating pipe by the heating power of the (a +1) th heating power value in the heating power set.
8. The method of controlling a heating tube temperature control system for a respiratory support apparatus according to claim 1, wherein the set range of the desired nose temperature value is 31-37 ℃; the set range of the airflow speed value is 10-60L/Min.
9. A respiratory support apparatus comprising the control system of the method of any one of claims 1-8 for controlling a heating tube temperature control system of a respiratory support apparatus.
CN201911405754.4A 2019-12-31 2019-12-31 System and method for controlling temperature of heating pipe of breathing support equipment and breathing support equipment Active CN111110978B (en)

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111110978B (en) * 2019-12-31 2022-05-27 湖南明康中锦医疗科技发展有限公司 System and method for controlling temperature of heating pipe of breathing support equipment and breathing support equipment
CN111617363A (en) * 2020-06-08 2020-09-04 山东科技大学 Humidification therapeutic apparatus with humidification and constant temperature control functions and control method thereof
CN111658931B (en) * 2020-07-14 2021-07-09 北京航空航天大学 Intelligent intranasal high-flow humidifying oxygen therapy system
CN111752156B (en) * 2020-07-14 2021-10-29 北京航空航天大学 Transnasal high-flow humidification oxygen therapy specialist treatment method and treatment system
CN114847646B (en) * 2022-05-07 2023-03-14 深圳市轻生活科技有限公司 Multifunctional electric heating table with voice control and local heating functions
CN116570808B (en) * 2023-07-12 2023-12-01 斯莱达医疗用品（惠州）有限公司 Breathing machine pipeline temperature and humidity intelligent regulation method, system and medium
CN116672556A (en) * 2023-07-25 2023-09-01 湖南比扬医疗科技有限公司 Control method and device for output power of breathing machine, breathing machine and storage medium

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001129090A (en) * 1999-11-08 2001-05-15 Advan Riken:Kk Humidifying mechanism of oxygen respiration auxiliary
JP5058982B2 (en) * 2005-05-26 2012-10-24 フィッシャー アンド ペイケル ヘルスケア リミテッド Respiratory device
US7983542B2 (en) * 2007-10-29 2011-07-19 Smiths Medical Asd, Inc. PID coefficient adjustment for respiratory heater closed loop control
US9802022B2 (en) * 2008-03-06 2017-10-31 Resmed Limited Humidification of respiratory gases
CN107715271B (en) * 2008-03-06 2023-10-24 瑞思迈私人有限公司 Humidification of respiratory gases
JP5919263B2 (en) * 2010-06-04 2016-05-18 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． Automatic temperature control in patient circuit
NZ743034A (en) * 2013-02-01 2019-12-20 ResMed Pty Ltd Wire heated tube with temperature control system for humidifier for respiratory apparatus
CN112972856A (en) * 2015-09-09 2021-06-18 费雪派克医疗保健有限公司 Zoned heating of breathing circuits
CN207400995U (en) * 2016-06-30 2018-05-25 北京怡和嘉业医疗科技有限公司 Heat humidifier
CN106840439B (en) * 2016-12-29 2022-09-20 北京怡和嘉业医疗科技股份有限公司 Temperature acquisition method and device for heating pipeline
CN108245759A (en) * 2017-12-16 2018-07-06 湖南明康中锦医疗科技发展有限公司 Breathe humidification instrument humiture output control system and method
CN110180065A (en) * 2019-04-24 2019-08-30 湖南明康中锦医疗科技发展有限公司 A kind of method and its system of the control of Breathing Suppotion equipment humidifying
CN111121392B (en) * 2019-12-31 2021-10-01 湖南明康中锦医疗科技发展有限公司 Automatic air drying system and method for respiratory support equipment and respiratory support equipment
CN111110978B (en) * 2019-12-31 2022-05-27 湖南明康中锦医疗科技发展有限公司 System and method for controlling temperature of heating pipe of breathing support equipment and breathing support equipment

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