CN113855961A - Breathing circuit temperature regulating device and equipment - Google Patents
Breathing circuit temperature regulating device and equipment Download PDFInfo
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- 230000029058 respiratory gaseous exchange Effects 0.000 title claims abstract description 122
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 220
- 238000001514 detection method Methods 0.000 claims description 46
- 230000000241 respiratory effect Effects 0.000 claims description 22
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- 238000000034 method Methods 0.000 description 12
- 210000002345 respiratory system Anatomy 0.000 description 7
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- 238000006243 chemical reaction Methods 0.000 description 3
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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
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
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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
- A61M16/1075—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
- A61M16/1075—Preparation of respiratory gases or vapours by influencing the temperature
- A61M16/1095—Preparation of respiratory gases or vapours by influencing the temperature in the connecting tubes
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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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3368—Temperature
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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
- 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
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Abstract
The application relates to a temperature regulating device and equipment of a breathing pipeline. The temperature adjusting device of the breathing pipeline comprises a power supply unit, a first heating unit, a second heating unit, a thermistor, a first switch unit and a second switch unit; the power supply unit comprises two anodes and a cathode; the first end of the second heating unit is connected with the negative electrode of the power supply unit, the second end of the second heating unit is respectively connected with the first end of the first heating unit and the first end of the thermistor, and the second end of the first heating unit and the second end of the thermistor are respectively connected with the two anodes of the power supply unit in a one-to-one correspondence manner. The purpose of accurately detecting the temperature of the breathing pipeline is achieved.
Description
Technical Field
The application relates to the technical field of medical equipment, in particular to a temperature adjusting device and equipment of a breathing pipeline.
Background
With the development of medical device technology, it is common to provide some breathing devices clinically to maintain the breathing of a patient.
In the respiratory pipeline temperature detection and control system in the traditional technology, two resistance wires wound on the outer wall of the respiratory pipeline are used for heating gas in the pipeline. Meanwhile, for the purpose of detecting the temperature of the gas in the pipeline, a gas temperature acquisition board is arranged at a gas outlet port of the breathing pipeline in the traditional technology, a thermistor and a diode are arranged in the gas temperature acquisition board, and the diode can also be replaced by a capacitor. However, in the conventional respiratory tract temperature detection and control system, the humidity in the respiratory tract is high, and in order to prevent water, the gas temperature acquisition board needs to be sealed in the tube wall of the respiratory tract, but the inner diameter of the respiratory tract is relatively small, and in order to not affect the air resistance in the tract, the volume design of the gas temperature acquisition board is relatively small, on one hand, the diode and the capacitor can generate larger heat when passing through overlarge current, and the performance can be greatly reduced after a long time; on the other hand, the thermistor, the diode or the capacitor are arranged on the gas temperature collecting plate, heat is accumulated on the sealed gas temperature collecting plate, the temperature of the diode or the capacitor when the diode or the capacitor passes through overlarge current can reach 80 ℃, long-term high temperature can cause that the temperature error collected by the thermistor is large, the gas temperature in the pipeline cannot be accurately monitored, the gas temperature in the pipeline cannot be accurately controlled, condensate water is easy to generate, and the use comfort of a user is reduced.
Therefore, a new solution is needed to solve the problem of the conventional respiratory circuit temperature detection and control system that the detection error of the gas temperature in the circuit is large.
Disclosure of Invention
In view of the above, it is necessary to provide a breathing circuit temperature adjustment device and apparatus capable of accurately detecting the temperature in the breathing circuit.
A temperature regulating device of a breathing pipeline comprises a power supply unit, a first heating unit, a second heating unit, a thermistor, a first switch unit and a second switch unit;
the power supply unit comprises two anodes and a cathode; the first end of the second heating unit is connected with the negative electrode of the power supply unit, the second end of the second heating unit is respectively connected with the first end of the first heating unit and the first end of the thermistor, and the second end of the first heating unit and the second end of the thermistor are respectively connected with the two positive electrodes of the power supply unit in a one-to-one correspondence manner;
the first heating unit and the second heating unit are used for forming a first heating loop to heat gas in the breathing pipeline, and the first switch unit is arranged on the first heating loop; the second heating unit and the thermistor are used for forming a temperature detection loop to detect the temperature of gas in the breathing pipeline, the second switch unit is arranged on the temperature detection loop, and the first switch unit and the second switch unit are not conducted at the same time.
In one embodiment, the apparatus further comprises:
and the first end of the third heating unit is connected with the first end of the second switch unit, the second end of the third heating unit is connected with the second end of the thermistor, and the third heating unit is used for forming a temperature detection loop with the thermistor and the second heating unit.
In one embodiment, the second switch unit includes two second terminals, and the second terminals of the second switch unit are respectively connected to the second positive electrode and the negative electrode of the power supply unit, and the apparatus further includes:
the first end of the third switching unit is connected with the third heating unit, and the two second ends of the third switching unit are respectively connected with the second heating unit and the thermistors in a one-to-one correspondence manner;
wherein the first heating unit, the second heating unit and the third heating unit form a second heating loop.
In one embodiment, the second switching unit further includes a plurality of first terminals, the third switching unit includes a plurality of first terminals and two second terminals, and the apparatus includes:
and the first ends of the third heating units are correspondingly connected with the first ends of the second switch units one by one, and the second ends of the third heating units are correspondingly connected with the first ends of the third switch units one by one.
In one embodiment, the apparatus further comprises:
a processing unit for generating a first switch control signal and a second switch control signal and a third switch control signal;
wherein when the first switching unit turns off the first heating circuit in response to the first switching control signal, the second switching unit responds to the second switching control signal, and the third switching unit responds to the third switching control signal to turn on the temperature detection circuit;
when the first switching unit turns on the first heating circuit in response to the first switching control signal, the second switching unit responds to the second switching control signal, and the third switching unit controls turning on and off of the second heating circuit in common in response to the third switching control signal.
In one embodiment, the processing unit comprises:
the temperature sensor is used for monitoring the ambient temperature in real time;
and the processor is connected with the temperature sensor and is used for generating a first control signal, a second control signal and a third control signal according to the ambient temperature and a preset temperature threshold value.
In one embodiment, the processing unit is configured to generate the first control signal, the second control signal, and the third control signal to turn on the second heating circuit when the ambient temperature is less than 20 ℃.
In one embodiment, the power supply unit comprises a heating power supply and a temperature acquisition power supply, wherein a cathode of the heating power supply is connected with a cathode of the temperature acquisition power supply and is used as a cathode of the power supply unit together, an anode of the heating power supply is used as a first anode of the power supply unit, and an anode of the temperature acquisition power supply is used as a second anode of the power supply unit;
the second switch unit comprises a first end and two second ends, and the two second ends of the second switch unit are respectively connected with the negative pole of the power supply unit and the second positive pole of the power supply unit in a one-to-one correspondence manner.
A breathing apparatus comprising a breathing circuit thermostat, a breathing support apparatus and a breathing circuit as described above, wherein,
the breathing support equipment shell is used for accommodating a power supply unit, a first switch unit and a second switch unit of the breathing pipeline heating device;
the breathing pipeline is connected with the breathing support equipment;
the first heating unit and the second heating unit of the breathing pipeline heating device are arranged on the outer wall of the breathing pipeline;
the thermistor of the breathing pipeline heating device is arranged on the inner wall of the air outlet port of the breathing pipeline.
In one embodiment, the apparatus further comprises:
and the connector is respectively connected with the respiratory support equipment and the respiratory pipeline.
The temperature adjusting device of the breathing pipeline comprises a power supply unit, a first heating unit, a second heating unit, a thermistor, a first switch unit and a second switch unit; the power supply unit comprises two anodes and a cathode; the first end of the second heating unit is connected with the negative electrode of the heating power supply, the second end of the second heating unit is respectively connected with the first end of the first heating unit and the first end of the thermistor, and the second end of the first heating unit and the second end of the thermistor are respectively connected with two anodes of the power supply unit in a one-to-one correspondence manner; the first heating unit and the second heating unit are used for forming a heating loop to heat gas in the breathing pipeline, and the first switch unit is arranged on the heating loop; the second heating unit and the thermistor are used for forming a temperature detection loop to detect the temperature of gas in the breathing pipeline, the second switch unit is arranged on the temperature detection loop, and the first switch unit and the second switch unit are not conducted at the same time. The first heating unit and the second heating unit are connected in series, the second heating unit is connected with the thermistor, a heating loop and a temperature detection loop are formed respectively, the first switch unit and the second switch unit are arranged on the heating loop and the temperature detection loop, the first switch unit and the second switch unit are not conducted simultaneously, the heating effect and the temperature detection effect are achieved on the breathing pipeline respectively, the temperature detection loop is disconnected in the heating process of the heating loop, the heating loop is disconnected in the temperature detection process when the temperature detection loop is conducted, namely, the use of the thermistor in the temperature detection loop cannot be influenced by overhigh temperature caused by the heating loop, and the purpose of accurately detecting the temperature of the breathing pipeline is achieved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a respiratory line heater according to one embodiment;
FIG. 2 is a second schematic view of a breathing circuit heating apparatus according to an embodiment;
FIG. 3 is a third schematic view showing the structure of a breathing circuit heating apparatus according to an embodiment;
FIG. 4 is a fourth schematic view showing the structure of a breathing circuit heating apparatus according to an embodiment;
FIG. 5 is a fifth schematic view showing the structure of a breathing circuit heating apparatus according to an embodiment;
FIG. 6 is a sixth schematic view showing the structure of a respiratory line heating apparatus according to an embodiment;
FIG. 7 is a block diagram of the structure of a breathing apparatus according to one embodiment;
fig. 8 is a second block diagram of the breathing apparatus in one embodiment.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first switching unit from another switching unit.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. Further, "connection" in the following embodiments is understood to mean "electrical connection", "communication connection", or the like, if there is a transfer of electrical signals or data between the connected objects.
As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.
In the description herein, references to the description of "some embodiments," "other embodiments," "desired embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic description of the above terminology may not necessarily refer to the same embodiment or example.
In one embodiment, as shown in fig. 1, a breathing circuit temperature regulating device 100 is provided, and the breathing circuit temperature regulating device 100 includes a power supply unit 110, a first heating unit 120, a second heating unit 130, a thermistor 140, a first switch unit 150, and a second switch unit 160.
The power supply unit 110 includes two anodes and one cathode; a first end of the second heating unit 130 is connected to the negative electrode of the power supply unit 110, a second end of the second heating unit 130 is connected to a first end of the first heating unit 120 and a first end of the thermistor 140, and a second end of the first heating unit 120 and a second end of the thermistor 140 are connected to two positive electrodes of the power supply unit 110 in a one-to-one correspondence manner.
The first heating unit 120 and the second heating unit 130 are used to form a first heating loop to heat the gas in the breathing circuit, and the first switch unit 150 is disposed on the first heating loop; the second heating unit 130 and the thermistor 140 are used to form a temperature detection circuit for detecting the temperature of the gas in the breathing circuit, and the second switch unit 160 is disposed on the temperature detection circuit, and the first switch unit and the second switch unit are not turned on at the same time.
Specifically, the voltage required by the first heating loop is different from the voltage required by the temperature detection loop, so that the power supply unit 110 in this embodiment has a voltage conversion circuit, and when the first heating loop is turned on, the voltage conversion circuit converts the voltage output by the first positive terminal of the power supply unit 110 into a heating voltage suitable for heating; when the temperature detection circuit is turned on, the voltage conversion circuit converts the voltage output from the second positive terminal of the power supply unit 110 into a detection voltage suitable for temperature detection, for example, the detection voltage is 5V, and the heating voltage is 24V. It is understood that the voltage values in the present embodiment are only for example and are not used to limit the protection scope of the present application.
Specifically, in the embodiment, taking fig. 3 as an example, the first switch unit 150 includes a first end and a second end, the first end of the first switch unit 150 is connected to the first positive electrode of the power supply unit 110, and the second end of the first switch unit 150 is connected to the first end of the first heating unit 120; the second switching unit 160 includes a first terminal and a second terminal, the first terminal of the second switching unit 160 is connected to the second terminal of the thermistor 140, and the second terminal of the second switching unit 160 is connected to the second positive electrode of the power supply unit 110. When the first switch unit 150 and the second switch unit 160 are not turned on at the same time, it can be understood that a reasonable time interval is preset, when the first switch unit 150 is turned on, the heating circuit is operated to heat the breathing circuit, after the first preset time interval is heated, the first switch unit 150 is turned off, the second switch unit 160 is turned on, the temperature detection circuit is operated to detect the temperature of the gas in the breathing circuit, after the second preset time interval is detected, the second switch unit 160 is turned off, and the first switch unit 150 repeats the above steps. The first preset time interval may be equal to or not equal to the second preset time interval, that is, the heating time and the temperature detecting time may be equal or not, and may be set according to an actual working condition. For example, when it is detected that the temperature of the gas in the breathing circuit is 10 ℃ lower than the patient adapted temperature, the first preset time interval may be set greater than the second preset time interval; the first preset time interval may be set equal to the second preset time interval when it is detected that the temperature of the gas in the breathing circuit is closer than the patient adapted temperature. It should be understood that the temperature values in the present embodiment are only for example and are not used to limit the protection scope of the present application.
Compared with the traditional technology for detecting the temperature of the gas in the breathing pipeline, the temperature detection loop provided by the invention removes a diode or a capacitor used in the traditional technology. In the in-service use process, both guaranteed heating circuit's heating function, make again at gas temperature testing process, it is too big because the electric current that diode or condenser pass through, lead to thermistor ambient temperature too high, and then influence the detection of gas temperature in the breathing pipe way, realize the purpose of gas temperature in the accurate measurement breathing pipe way.
In one embodiment, as shown in fig. 2, a temperature adjustment device 100 for a respiratory tract is provided, in which a power supply unit 110 includes a heating power supply 111 and a temperature collecting power supply 112, a negative electrode 111 of the heating power supply and a negative electrode of the temperature collecting power supply 112 are connected to each other to serve as a negative electrode of the power supply unit, a positive electrode of the heating power supply 111 serves as a first positive electrode of the power supply unit 110, and a positive electrode of the temperature collecting power supply 112 serves as a second positive electrode of the power supply unit; the second switch unit 160 includes a first end and two second ends, and the two second ends of the second switch unit 160 are respectively connected to the negative electrode of the power supply unit 110 and the second positive electrode of the power supply unit 110 in a one-to-one correspondence manner.
It should be noted that the voltage of the temperature-collecting power supply 112 does not generally need to be an excessively high voltage, and the voltage of the temperature-collecting power supply 112 in this embodiment may be 5V or 3.3V, and it should be understood that the working voltage of the temperature-collecting power supply 112 in this embodiment is only used for example, and is not taken as a limitation scope of this application.
In one embodiment, as shown in fig. 3, a breathing circuit temperature regulating device 100 is provided, and the breathing circuit temperature regulating device 100 further includes a third heating unit 170. A first end of the third heating unit 170 is connected to a first end of the second switch unit 160, a second end of the third heating unit 170 is connected to a second end of the thermistor 140, and the third heating unit 170 is used to form a temperature detection loop with the thermistor 140 and the second heating unit 130.
In one embodiment, with continued reference to fig. 3, the breathing circuit temperature adjustment apparatus 100 further includes a third switching unit 180, the third switching unit 180 includes a first end and two second ends, the first end of the third switching unit 180 is connected to the third heating unit, and the two second ends of the third switching unit 180 are respectively connected to the second heating unit 130 and the thermistor 140 in a one-to-one correspondence manner. The second switch unit 160 includes two second ends, the first end of the second switch unit 160 is connected to the first end of the third heating unit 170, the second end of the second switch unit 160 is respectively connected to the second positive electrode and the negative electrode of the power supply unit 110, and the temperature adjustment device 100 of the breathing circuit further includes the third heating unit 170. The first heating unit 120, the second heating unit 130, and the third heating unit 170 form a second heating circuit.
Specifically, when normal use breathing machine, the air current that the breathing machine blew out has certain temperature after the humidifier humidification, when indoor ambient temperature is lower, the temperature of the breathing pipeline outer wall that exposes in the environment is also lower, produce the comdenstion water in the pipeline inside very easily like this, and if the gas temperature that the breathing machine carried is low, send to what will be in patient's respiratory track being ice-cold air, cause the patient to be uncomfortable, consequently it is necessary to carry out temperature control to the gas in the pipeline, avoid the production of comdenstion water, satisfy the breathing pipeline temperature simultaneously and in human comfortable within range.
In order to maintain the temperature of the gas in the breathing pipeline within the temperature range suitable for the human body at a lower temperature, a technician generally selects a heating resistance wire with higher power, and the adoption of the resistance wire with higher power increases the manufacturing cost of the breathing equipment, has a low safety factor, and easily scalds a patient when a fault occurs, so that the third heating unit 170 is arranged in the temperature detection loop through a reasonable connection loop utilizing temperature detection, and the second heating loop is formed through the arrangement of the second switch unit 160 and the third switch unit 180. Further, by the additional second heating circuit and the switching of the second switch unit 160 and the third switch unit 180, the switching of the heating power under different ambient temperatures can be realized, for example, under the condition of higher ambient temperature, the first heating circuit is used for heating the air in the breathing pipeline; and under the condition of low ambient temperature, the second heating loop is used for heating the air in the breathing pipeline. Moreover, the first heating unit 120, the second heating unit 130 and the third heating unit 170 in this embodiment do not need large heating power, thereby reducing the production cost and avoiding scalding patients when faults occur.
In one embodiment, as shown in fig. 4, a breathing circuit temperature adjusting apparatus 100 is provided, wherein the second switch unit 160 further includes a plurality of first ends, the third switch unit 180 includes a plurality of first ends and two second ends, the breathing circuit temperature adjusting apparatus 100 includes a plurality of third heating units, the first ends of the plurality of third heating units 170 are connected with the first ends of the plurality of second switch units 160 in a one-to-one correspondence manner, and the second ends of the plurality of third heating units 170 are connected with the first ends of the third switch unit 180 in a one-to-one correspondence manner.
Specifically, taking the third heating unit 1701, the third heating unit 1702 and the third heating unit 1703 respectively included in fig. 4 as an example, the adjustability of the heating power of the breathing circuit heating apparatus 100 can be improved by arranging and connecting a plurality of third heating units in this embodiment, for example, when the ambient temperature is lower than zero, the third heating unit 1701, the third heating unit 1702 and the third heating unit 1703 participate in heating the air in the breathing circuit together; and when one of the third heating units fails, the other third heating units can work alternatively to complete temperature detection and heating of air in the breathing pipeline. For example, in the event of a failure of the third heating unit 1701, the third heating unit 1702 or 1703 performs temperature detection instead of the third heating unit 1701, or forms a second heating loop with the first heating unit 120 and the second heating unit 130 to heat the air in the breathing circuit. The reliability of the breathing pipeline is improved.
In one embodiment, as shown in FIG. 5, a breathing circuit thermostat 100 is provided. The breathing circuit thermostat 100 further comprises a processing unit 190, the processing unit 190 being configured to generate a first switch control signal and a second switch control signal and a third switch control signal; wherein, when the first switching unit 150 turns off the first heating circuit in response to the first switching control signal, the second switching unit 160 is responsive to the second switching control signal, and the third switching unit 180 is responsive to the third switching control signal, to turn on the temperature detection circuit; when the first switching unit 150 turns on the first heating circuit in response to the first switching control signal, the second switching unit 160 is responsive to the second switching control signal, and the third switching unit 180 collectively controls the turn-on and turn-off of the second heating circuit in response to the third switching control signal.
Specifically, the first switch control signal in this embodiment may be a signal having only a high level and a low level, that is, the first switch signal may include "0" and "1", the first switch unit 150 implements turning on the first heating circuit in response to "1" of the first switch control signal, and the first switch unit 150 implements turning off the first heating circuit in response to "0" of the first switch control signal. The second switch control signal and the third switch signal may be high and low levels that exhibit different intervals in one period, for example, the period is 40ms, the first 20ms is high level, and the second 20ms is low level, which indicates "10"; all low levels within 40ms indicate "00"; within 40ms, the first 20ms is high, and the last 20ms is high, indicating "01". It is understood that the second and third switch control signals may include "10", "00" and "01", i.e., the selection of the turning on or off of the second heating circuit and the turning on of the temperature detection circuit may be achieved. For example, when the first switching unit 150 turns off the first heating circuit in response to "0" of the first switching control signal, both the second switching control signal and the third switching control signal are "01" to turn on the temperature detection circuit; when the first switching unit 150 turns on the first heating circuit in response to "1" of the first switching control signal, the second switching control signal and the third switching control signal may both be "00", that is, the disconnection of the second heating circuit is achieved; in addition, when the first switching unit 150 turns on the first heating circuit in response to "1" of the first switching control signal, the second switching control signal and the third switching control signal may also both be "10", that is, the turning on of the second heating circuit is achieved.
In one embodiment, with continued reference to FIG. 5, the processing unit 190 includes: a temperature sensor 191, and a processor 192. The temperature sensor 191 is used for monitoring the ambient temperature in real time; the processor 192 is connected to the temperature sensor 191, and the processor 192 is configured to generate a first control signal, a second control signal, and a third control signal according to the ambient temperature and a preset temperature threshold.
In one embodiment, the processing unit is configured to generate the first control signal, the second control signal, and the third control signal to turn on the second heating circuit when the ambient temperature is less than 20 ℃.
The environmental temperature is a physical quantity used for representing the cold and hot degree of the environment, and according to research, a human body feels comfortable when the environmental temperature is between 18 and 24 ℃. In this embodiment, when the ambient temperature is less than 20 ℃, the second heating circuit is turned on to heat the air in the breathing pipeline, and the heating unit is added to realize rapid heating to maintain the appropriate temperature of the air in the breathing pipeline.
In one embodiment, at least one of the first heating unit 120, the second heating unit 130, and the third heating unit 170 is a resistance wire. In this embodiment, the first heating unit 120 is a resistance wire R1, the second heating unit 130 is a resistance wire R2, and the third heating unit 170 is a resistance wire R3.
In this embodiment, the connection manner of the first resistance wire R1 is the same as that of the first heating unit 120, the connection manner of the second resistance wire R2 is the same as that of the second heating unit 130, and the connection manner of the third resistance wire R3 is the same as that of the third heating unit 170, which is not described herein again.
In one embodiment, thermistor 140 is a negative temperature coefficient thermistor.
Specifically, the thermistor 140 is a sensor resistor whose resistance value changes with a change in temperature. The thermistor is divided into a positive temperature coefficient thermistor and a negative temperature coefficient thermistor according to different temperature coefficients. The resistance value of the positive temperature coefficient thermistor increases with increasing temperature, and the resistance value of the negative temperature coefficient thermistor decreases with increasing temperature. In the embodiment, the negative temperature coefficient thermistor can still conduct the loop when the temperature in the breathing pipeline rises, and the accuracy of temperature detection is facilitated.
In one embodiment, as shown in fig. 6, a breathing circuit temperature regulating device 100 is provided, the breathing circuit temperature regulating device 100 comprising: the temperature sensor 191, the processor 192, the heating power supply 111, the temperature acquisition power supply 112, the first switching unit 150, the first resistance wire R1, the second resistance wire R2, the third resistance wire R3, the thermistor 140, the second switching unit 160, and the third switching unit 180.
In this embodiment, the connection modes of the first resistance wire R1, the second resistance wire R2, the third resistance wire R3, the temperature sensor 191, the processor 192, the heating power source 111, the first switch unit 150, the thermistor 140, the second switch unit 160, and the third switch unit 180 are defined in the above embodiments, and are not described herein again.
In one embodiment, as shown in fig. 7, a breathing apparatus 200 is provided, which includes the breathing circuit temperature adjustment device 100, the breathing support apparatus 210 and the breathing circuit, wherein the breathing support apparatus 210 is configured to house the power supply unit 110, the first switch unit 150 and the second switch unit 160 of the breathing circuit temperature adjustment device 100; the breathing circuit is connected to the respiratory support device 210; the first heating unit 120 and the second heating unit 130 of the breathing circuit thermostat 100 are disposed on the outer wall of the breathing circuit; the thermistor 140 of the breathing circuit heating apparatus 100 is disposed on the inner wall of the outlet port of the breathing circuit.
In one embodiment, with continued reference to fig. 7, the respiratory apparatus 200 apparatus further comprises a connector 230. Connector 230 is connected to respiratory support device 210 and the breathing circuit, respectively.
The connector 230 includes two built-in connection points, and for the sake of simplicity, the positions of the two connection points are not shown in the drawings, and it is understood that the skilled person can make arrangements according to the following functional description of the two connections. Specifically, the first connection point of the connector 230 is an airflow connection port for conveying air in the breathing circuit to support the circulation of air in the breathing apparatus; the second connection point of the connector 230 is a communication connection port, and is used for connecting the power supply unit 110, the first switch unit 150, and the second switch unit 160, which are accommodated in the respiratory device support apparatus, with the first heating unit 120 and the second heating unit 130, which are disposed on the outer wall of the respiratory circuit, and the thermistor 140, which is disposed on the inner wall of the respiratory circuit 220.
In this embodiment, the heating circuit and the temperature detection circuit are respectively arranged, so that the use of the thermistor in the temperature detection circuit is not affected by the overhigh temperature caused by the heating circuit, and the purpose of accurately detecting the temperature of the breathing pipeline is achieved.
In one embodiment, as shown in fig. 8, a breathing apparatus 200 is provided, the breathing apparatus 200 comprising the breathing circuit thermostat 100, the breathing support apparatus 210 connector 220 and the breathing circuit described above. The breathing circuit temperature adjustment device 100 includes: the temperature sensor 191, the processor 192, the heating power supply 111, the temperature acquisition power supply 112, the first switching unit 150, the first resistance wire R1, the second resistance wire R2, the third resistance wire R3, the thermistor 140, the second switching unit 160, and the third switching unit 180. In addition, the connection modes of the temperature sensor 191, the processor 192, the heating power supply 111, the temperature acquisition power supply 112, the first switch unit 150, the first resistance wire R1, the second resistance wire R2, the third resistance wire R3, the thermistor 140, the second switch unit 160 and the third switch unit 180 in the temperature adjustment device 100 of the breathing pipeline refer to the limitations in the above embodiments, and are not described herein again. The respiratory support device 210 comprises a housing for accommodating the temperature sensor 191, the processor 192, the heating power supply 111, the temperature acquisition power supply 112, the first switch unit 150 and the second switch unit 160 of the temperature regulating device 100 of the respiratory circuit; the first resistance wire R1, the second resistance wire R2 and the third resistance wire R3 are wound on the outer wall of the breathing pipeline, and the thermistor 140 and the third switch unit 180 are arranged on the inner wall of the breathing pipeline; the connection manner of the connector 220 is as defined in the above embodiments, and will not be described herein.
In one embodiment, a method for regulating the temperature of a breathing circuit is provided, the method further comprising:
step S101, acquiring a temperature value in the environment.
Step S102, comparing the temperature value in the environment with a preset temperature value, and obtaining a comparison result.
And step S103, generating a control scheme according to the comparison result so as to adjust the temperature in the breathing pipeline.
When the ambient temperature value is greater than 20 ℃, the control scheme comprises a first switch control signal, a second switch control signal, a third switch control signal, a first preset interval and a second preset interval.
Specifically, when the temperature value of the environment is greater than 20 ℃, the first switch control signal is at a high level "1" to control the first switch unit 150 to turn on the first heating circuit, and both the second switch control signal and the third switch control signal at this time are at a low level "00" in a cycle, that is, in an off state. After a first preset time interval, the first switch control signal is at low level "0" to control the first switch unit 150 to turn off the first heating circuit, and the second switch control signal is at first low level and then at high level "01" in the period, which is exemplified by the second switch unit 160 in fig. 8, that is, the first end of the second switch unit 160 is connected to the second end connected to the second positive electrode of the power supply unit 110 in fig. 8, and the third switch control signal is at first low level and then at high level "01" in the period, which is exemplified by the third switch unit 180 in fig. 8, that is, the first end of the third switch unit 180 is connected to the second end of the thermistor 140 in fig. 8 to turn on the temperature detection circuit to detect the temperature in the respiratory tract, wherein the time of temperature detection is a second preset time interval, and after the second preset time interval, the heating time of the first heating loop is adjusted in real time according to the detected temperature in the breathing pipe, namely, a first preset time interval is adjusted, so that the purpose of adjusting the temperature in the breathing pipe is achieved.
When the ambient temperature value is less than 20 ℃, the control scheme comprises a first switch control signal, a second switch control signal, a third preset interval and a fourth preset interval.
When the temperature value of the environment is less than 20 ℃, the first switch control signal is at a high level "1" to control the first switch unit 150 to be turned on, the second switch control signal is at a high level first and then at a low level state "10" in a cycle, taking the second switch unit 160 in fig. 8 as an example, that is, the first end of the second switch unit 160 is communicated with the second end connected to the negative electrode of the power supply unit 110 in fig. 8, and the third switch control signal is at the moment at a high level first and then at a low level state "10" in a cycle, taking the third switch unit 180 in fig. 8 as an example, that is, the first end of the third switch unit 180 is communicated with the second end connected to the second end of the second heating unit 130 in fig. 8 to realize the conduction of the second heating loop and heat the air in the breathing pipeline. After a third preset time interval, the first switch control signal is at low level "0" to control the first switch unit 150 to turn off, and the second switch control signal is at low level first and then at high level state "01" in the present application, taking the second switch unit 160 in fig. 8 as an example, that is, the first end of the second switch unit 160 is connected to the second end connected to the second positive electrode of the power supply unit 110 in fig. 8, and the third switch control signal is at low level first and then at high level state "01" in the present application, taking the third switch unit 180 in the present application 8 as an example, that is, the first end of the third switch unit 180 is connected to the second end of the thermistor 140 in fig. 8 to turn on the temperature detection loop to detect the temperature in the respiratory tract, wherein the time of temperature detection is a fourth preset time interval, and after the fourth preset time interval, and adjusting the heating time of the second heating loop in real time according to the detected temperature in the breathing pipe, namely adjusting a third preset time interval to achieve the purpose of adjusting the temperature in the breathing pipe.
In one embodiment, a processor for temperature regulation of a breathing circuit is provided, the processor comprising: the temperature acquisition module is used for acquiring a temperature value in the environment; the temperature comparison module is used for comparing the temperature value in the environment with a preset temperature value and acquiring a comparison result; and the signal generation module is used for generating a control scheme according to the comparison result so as to adjust the temperature in the breathing pipeline.
For the specific definition of the processor in the embodiment, reference may be made to the above definition of the temperature adjustment method applied to the breathing circuit, which is not described herein again. The various modules in the processor described above may be implemented in whole or in part by software, hardware, and combinations thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation.
In one embodiment, a computer device is further provided, which includes a memory and a processor, the memory stores a computer program, and the processor executes the computer program to implement the steps of the above-mentioned breathing circuit temperature regulation method embodiment.
In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned method embodiment of breathing circuit thermoregulation.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The temperature regulating device of the breathing pipeline is characterized by comprising a power supply unit, a first heating unit, a second heating unit, a thermistor, a first switch unit and a second switch unit;
the power supply unit comprises two anodes and a cathode; the first end of the second heating unit is connected with the negative electrode of the power supply unit, the second end of the second heating unit is respectively connected with the first end of the first heating unit and the first end of the thermistor, and the second end of the first heating unit and the second end of the thermistor are respectively connected with the two positive electrodes of the power supply unit in a one-to-one correspondence manner;
the first heating unit and the second heating unit are used for forming a first heating loop so as to heat the gas in the breathing pipeline, and the first switch unit is arranged on the first heating loop; the second heating unit with thermistor is used for forming the temperature detection return circuit, in order to detect gas temperature in the breathing pipe way, the second switch unit is located on the temperature detection return circuit, first switch unit with the second switch unit does not switch on simultaneously.
2. The apparatus of claim 1, further comprising:
and a first end of the third heating unit is connected with a first end of the second switch unit, a second end of the third heating unit is connected with a second end of the thermistor, and the third heating unit is used for forming the temperature detection loop with the thermistor and the second heating unit.
3. The apparatus of claim 2, wherein the second switching unit includes two second terminals, and the second terminals of the second switching unit are respectively connected to a second positive electrode and a negative electrode of the power supply unit, the apparatus further comprising:
the first end of the third switching unit is connected with the third heating unit, and the two second ends of the third switching unit are respectively connected with the second heating unit and the thermistors in a one-to-one correspondence manner;
wherein the first heating unit, the second heating unit, and the third heating unit form a second heating loop.
4. The apparatus of claim 3, wherein the second switching unit further comprises a plurality of first terminals, wherein the third switching unit comprises a plurality of first terminals and two second terminals, and wherein the apparatus comprises:
the first ends of the third heating units are connected with the first ends of the second switch units in a one-to-one correspondence manner, and the second ends of the third heating units are connected with the first ends of the third switch units in a one-to-one correspondence manner.
5. The apparatus of claim 3, further comprising:
a processing unit for generating a first switch control signal and a second switch control signal and a third switch control signal;
wherein, when the first switching unit turns off the first heating circuit in response to the first switching control signal, the second switching unit responds to the second switching control signal, and the third switching unit responds to the third switching control signal to turn on the temperature detection circuit;
the second switching unit is responsive to the second switching control signal when the first switching unit turns on the first heating circuit in response to the first switching control signal, and the third switching unit controls turning on and off of the second heating circuit in common in response to the third switching control signal.
6. The apparatus of claim 5, wherein the processing unit comprises:
the temperature sensor is used for monitoring the ambient temperature in real time;
and the processor is connected with the temperature sensor and used for generating a first control signal, a second control signal and a third control signal according to the environment temperature and a preset temperature threshold value.
7. The apparatus of claim 6, wherein the processing unit is configured to generate the first control signal, the second control signal, and the third control signal to turn on a second heating loop when the ambient temperature is less than 20 ℃.
8. The device of claim 1, wherein the power supply unit comprises a heating power supply and a temperature collecting power supply, wherein a negative electrode of the heating power supply and a negative electrode of the temperature collecting power supply are connected and jointly used as a negative electrode of the power supply unit, a positive electrode of the heating power supply is used as a first positive electrode of the power supply unit, and a positive electrode of the temperature collecting power supply is used as a second positive electrode of the power supply unit;
the second switch unit comprises a first end and two second ends, and the two second ends of the second switch unit are respectively connected with the negative pole of the power supply unit and the second positive pole of the power supply unit in a one-to-one correspondence manner.
9. A breathing apparatus, comprising a breathing circuit temperature regulating device according to any of claims 1-8, a breathing support apparatus and a breathing circuit, wherein,
the respiratory support equipment shell is used for accommodating a power supply unit, a first switch unit and a second switch unit of the respiratory pipeline heating device;
the respiratory tubing is connected with the respiratory support device;
the first heating unit and the second heating unit of the breathing pipeline heating device are arranged on the outer wall of the breathing pipeline;
and the thermistor of the breathing pipeline heating device is arranged on the inner wall of the air outlet port of the breathing pipeline.
10. The apparatus of claim 9, further comprising:
and the connector is respectively connected with the respiratory support equipment and the respiratory pipeline.
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| CN113855961B (en) | 2024-02-27 |
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