CN117959544A - Intelligent control high-precision air supply system - Google Patents

Intelligent control high-precision air supply system Download PDF

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Publication number
CN117959544A
CN117959544A CN202410274317.8A CN202410274317A CN117959544A CN 117959544 A CN117959544 A CN 117959544A CN 202410274317 A CN202410274317 A CN 202410274317A CN 117959544 A CN117959544 A CN 117959544A
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gas
control module
pressure
signal
pressure sensor
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CN202410274317.8A
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CN117959544B (en
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刘海挺
高一
曹玉娜
陆杲
杨文�
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Shanghai Haogu Industrial Co ltd
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Shanghai Haogu Industrial 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
    • 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
    • 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
    • A61M16/0051—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes with alarm devices
    • 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
    • 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
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/0027—Accessories therefor, e.g. sensors, vibrators, negative pressure pressure meter
    • 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
    • A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
    • A61M2016/0033—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical
    • 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
    • A61M2205/15—Detection of leaks

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  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)

Abstract

The application relates to an intelligent control high-precision gas supply system, which relates to the technical field of medical treatment and comprises at least two gas input channels and a gas output channel, wherein one end of each gas input channel is communicated with the same end of the gas output channel; the gas input channel or the gas output channel is communicated with a pressure measuring piece, and the pressure measuring piece is used for detecting the pressure of gas and outputting the pressure into an electric signal; the control module is connected with the pressure measuring part signal and is used for receiving and outputting a control instruction based on the output signal of the pressure measuring part, and the control instruction is used for controlling the on-off of the vital sign channel of the gas input; when the output signal of one pressure measuring part shows that the pressure of the current gas input channel is smaller than the reference value, the control module opens the other gas input channel through a control instruction so that the gas pressure of the gas output channel is kept within a preset range. The present application has the effect of enabling the patient to inhale sufficient oxygen to maintain vital signs.

Description

Intelligent control high-precision air supply system
Technical Field
The application relates to the technical field of medical treatment, in particular to an intelligent control high-precision air supply system.
Background
Oxygen inhalation is commonly referred to as oxygen therapy, and patients who need to receive oxygen therapy are often referred to as patients with varying degrees of hypoxia. In the medical field, oxygen is supplied to a patient by means of an oxygen tank.
Because the patient who needs to inhale oxygen is in a critical state in general, the amount of oxygen inhaled by the patient needs to be controlled more precisely to maintain the vital signs of the patient in an optimal range. When the oxygen in the current oxygen tank is exhausted, if a new oxygen tank cannot be replaced in time, vital signs of a patient are easily affected.
Disclosure of Invention
In order to prevent the vital sign of a patient from being influenced by the exhaustion of oxygen in the gas storage tank, the application provides an intelligent control high-precision gas supply system.
The application provides an intelligent control high-precision air supply system, which adopts the following technical scheme:
An intelligent control high-precision gas supply system comprises at least two gas input channels and a gas output channel, wherein one end of each gas input channel is communicated with the same end of each gas output channel; the gas input channel or the gas output channel is communicated with a pressure measuring piece, and the pressure measuring piece is used for detecting the pressure of gas and outputting the pressure into an electric signal;
The pressure measuring piece is in signal connection with a control module, and the control module receives and outputs a control instruction based on an output signal of the pressure measuring piece, wherein the control instruction is used for controlling the on-off of the vital sign channel of the gas input; when the output signal of one pressure measuring part indicates that the current pressure of the gas input channel is smaller than a reference value, the control module opens the other gas input channel through the control instruction, so that the gas pressure of the gas output channel is kept within a preset range.
Through adopting above-mentioned technical scheme, when the patient uses gas storage jar oxygen uptake, detect the atmospheric pressure of gas input passageway through the pressure measurement spare, control module can judge whether oxygen in the current oxygen jar is sufficient according to the current gas input passageway atmospheric pressure that obtains, when the oxygen in the current oxygen jar is insufficient to maintain patient's vital sign, control module can start another gas input passageway to make patient can inhale sufficient oxygen in order to maintain vital sign.
Preferably, the pressure measuring piece comprises a first pressure sensor and a second pressure sensor, wherein the first pressure sensor and the second pressure sensor are arranged on the gas input channel, and the second pressure sensor is arranged on the gas output channel and communicated;
the signal output end of each first pressure sensor is in signal connection with the signal input end of the control module, the signal output end of the second pressure sensor is in signal connection with the signal input end of the control module, and the control module outputs a control instruction based on the current output signals of the first pressure sensors, the second pressure sensors and the reference value.
Through adopting above-mentioned technical scheme, detect the pressure of corresponding passageway through the pressure sensor that installs at gas input passageway and gas output passageway respectively, judge whether there is the condition such as gas leakage between gas input passageway and the gas output passageway, and control module generates and output corresponding control command based on the difference between two pressure sensor's the output signal and the benchmark value to make the patient can absorb sufficient oxygen.
Preferably, the reference values include a first reference value and a second reference value, and the first reference value represents a pressure greater than the second reference value;
When the output signal of the first pressure sensor is smaller than a second reference value, the control module outputs a first turn-off instruction to enable the current gas input channel to be closed, and simultaneously, the control module outputs a complete turn-on instruction to enable the other gas input channel to be completely turned on.
By adopting the technical scheme, when the oxygen in the current gas channel is exhausted, the output signal of the first pressure sensor corresponding to the current gas channel is smaller than the second reference value, and after the control module receives the judgment result of the situation, a first turn-off instruction is output, and the current gas input channel is turned off through the first turn-off instruction, so that oxygen is not provided to the gas output channel any more; meanwhile, the control module outputs a complete conduction instruction, and the other gas input channel is completely conducted through the complete conduction instruction, namely, oxygen in the gas output channel is provided by the other gas input 7 channel, and sufficient supply of oxygen can be ensured at the moment, so that the vital sign stability of a patient is ensured.
Preferably, each gas input channel is further communicated with a flow detector, the flow detector is in signal connection with the control module, and the control module judges whether gas leakage exists between the gas input channels based on output signals of the flow detectors, time lengths and output signals of the second pressure sensors;
If the time length is within a preset time range and the output signal of the flow detector is lower than a gas flow reference value or a reference range where the gas flow is located, judging that the gas input channel has a gas leakage condition currently, and outputting a first gas leakage early warning signal by the control module;
If the time length is within a preset time range and the output signal of the second pressure sensor is lower than an air pressure reference value or an air pressure reference range, the control module judges that an air leakage condition exists in a channel between the flow detector and the second pressure sensor and outputs a second air leakage early warning signal;
Wherein the time length refers to a time length from a time when the flow detector starts to detect the gas flow to a current time.
Through adopting above-mentioned technical scheme, control module passes through the output signal of time length and flow detector, can judge whether the current gas input channel has the gas leakage condition, if there is the gas leakage condition, needs in time to inspect and change the passageway to ensure sufficient supply of oxygen, thereby guarantee that patient's vital sign is stable. Meanwhile, the control module can judge whether the gas input channel and the gas output channel between the gas flow device and the second pressure sensor have gas leakage or not through the time length and the output signal of the second pressure sensor, if the gas leakage exists, the channel needs to be checked and replaced in time so as to ensure sufficient supply of oxygen, and therefore vital signs of patients are ensured to be stable.
Preferably, the control module presets an initial total amount in each gas storage tank, and calculates the gas remaining amount in the current gas storage tank based on the current time length and the output signal of the flow detector;
when the gas residual quantity is smaller than a first early warning threshold value, the control module outputs a first early warning signal, wherein the first early warning threshold value is a value when the residual gas in the gas storage tank is exhausted currently or is expressed as a range in which the residual gas in the gas storage tank is exhausted currently.
Through adopting above-mentioned technical scheme, through the total amount in the gas storage jar subtracting the gas volume that has used, can obtain the surplus in the current gas storage jar to based on first early warning threshold, can carry out the early warning to the surplus gas in the gas storage jar, provided medical personnel in time change, and then provide the guarantee for the patient.
Preferably, when the gas remaining amount in the gas storage tank is smaller than the first early warning threshold value at the non-current time, the control module defines a second early warning threshold value, and the second early warning threshold value is larger than the first early warning threshold value; when the current gas residual quantity in the gas storage tank is smaller than the second early warning threshold value, the control module outputs a second early warning signal, and when the current gas residual quantity in the gas storage tank is smaller than the first early warning threshold value, the control module outputs a third early warning signal, wherein the early warning emergency degree of the first early warning signal, the second early warning signal and the third early warning signal is sequentially increased.
Through adopting above-mentioned technical scheme, form multistage early warning through first early warning signal, second early warning signal and third early warning signal, can confirm better early warning level according to current state to suggestion medical personnel, thereby ensure patient's vital sign.
Preferably, the control module includes a rechecking unit that determines whether to leak air based on the remaining amount of air, the output signal of the first pressure sensor, and the output signal of the second pressure sensor;
The gas residual quantity corresponds to the output signals of the first pressure sensor one by one, and the gas residual quantity corresponds to the output signals of the second pressure sensor one by one; and when the rechecking unit detects that the residual gas amount is in a non-corresponding relation with the output signal of the first pressure sensor or the output signal of the second pressure sensor, the rechecking unit outputs a third air leakage early warning signal.
Through adopting above-mentioned technical scheme, based on the atmospheric pressure signal that first pressure sensor department and second pressure sensor department of the surplus of gas detected, judge whether current first pressure sensor and second pressure sensor correspond to the atmospheric pressure that surplus gas corresponds to can judge whether current gas input channel and gas output channel exist the gas leakage condition, and then can effectively ensure patient's vital sign.
Preferably, a first diaphragm valve is arranged on the gas input channel, the first diaphragm valve is controlled by the control module, and the control module controls the opening of the first diaphragm valve based on the gas supply requirement;
The gas output channel is provided with a second diaphragm valve, the second diaphragm valve is controlled by the control module, and the control module controls the opening of the second diaphragm valve based on the gas supply requirement.
Through adopting above-mentioned technical scheme, the diaphragm valve is the switch valve of the high-purity gas of commonly used, can realize controlling by the handle or the electric actuator of manual control valve generally, consequently form to be connected between diaphragm valve and the control module, adjust the aperture by control module based on current air feed demand to realize controlling the air supply quantity more accurately.
Preferably, the first diaphragm valve and the second diaphragm valve are both mounted on a diaphragm valve bracket, and mounting holes for positioning are preset in the diaphragm valve bracket.
Through adopting above-mentioned technical scheme, fix a position first diaphragm valve and second diaphragm valve through the diaphragm valve support to can restrict the position of gas input channel and gas output channel, ensure the unobstructed of gas circulation, provide the guarantee for the patient.
Preferably, the joints of the gas input channels and the gas output channels are communicated with the same multi-way connecting piece, and a one-way valve for limiting the flow direction of the gas is communicated between the gas input channels and the multi-way connecting piece.
Through adopting above-mentioned technical scheme, through the setting of check valve, can effectively restrict the flow direction of gas to guarantee that the patient can inhale sufficient oxygen, provide the guarantee for the patient.
In summary, the present application includes at least one of the following beneficial technical effects:
1. When a patient uses the gas storage tank to inhale oxygen, the pressure of the gas input channel is detected through the pressure measuring piece, the control module can judge whether the oxygen in the current oxygen tank is sufficient according to the acquired pressure of the current gas input channel, and when the oxygen in the current oxygen tank is insufficient to maintain vital signs of the patient, the control module can start the other gas input channel, so that the patient can inhale sufficient oxygen to maintain the vital signs;
2. When the oxygen in the current gas channel is exhausted, the output signal of the first pressure sensor corresponding to the current gas channel is smaller than the second reference value, and after the control module receives the judgment result of the situation, a first turn-off instruction is output, and the current gas input channel is turned off through the first turn-off instruction, so that oxygen is not provided to the gas output channel any more; meanwhile, the control module outputs a complete conduction instruction, and the other gas input channel is completely conducted through the complete conduction instruction, namely, oxygen in the gas output channel is provided by the other gas input channel, so that sufficient supply of oxygen can be ensured, and vital signs of a patient are ensured to be stable;
3. The control module can judge whether the current gas input channel has gas leakage condition or not through the time length and the output signal of the flow detector, if the current gas input channel has gas leakage condition, the channel needs to be checked and replaced in time so as to ensure sufficient supply of oxygen, thereby ensuring the stability of vital signs of patients; meanwhile, the control module can judge whether the gas input channel and the gas output channel between the gas flow device and the second pressure sensor have gas leakage or not through the time length and the output signal of the second pressure sensor, if the gas leakage exists, the channel needs to be checked and replaced in time so as to ensure sufficient supply of oxygen, and therefore vital signs of patients are ensured to be stable; based on the air pressure signals detected by the first pressure sensor and the second pressure sensor of the residual air quantity, judging whether the current first pressure sensor and the second pressure sensor correspond to the air pressure corresponding to the residual air, so that whether the current air input channel and the air output channel have air leakage or not can be judged, and vital signs of patients can be effectively ensured;
4. The first early warning signal, the second early warning signal and the third early warning signal form a multi-stage early warning, and a better early warning level can be determined according to the current state so as to prompt medical staff, thereby ensuring vital signs of patients.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present application;
FIG. 2 is a cross-sectional view showing the internal structure of an intelligent control high-precision air supply system according to an embodiment of the present application;
FIG. 3 is a block diagram of signal connections between a control module and a plurality of components in an embodiment of the present application;
FIG. 4 is a flow chart of signal transmission between the pressure sensing element and the control module, the first diaphragm valve, and the second diaphragm valve according to an embodiment of the present application;
FIG. 5 is a flow chart of signal transmission between a flow detector and a control module according to an embodiment of the present application;
FIG. 6 is a signal transmission flow chart with the residual gas amount as the pre-warning parameter in the embodiment of the application;
FIG. 7 is a signal transmission flow chart of the rechecking unit in the embodiment of the application;
wherein the diamond-shaped block diagrams in fig. 4-7 represent the receipt of the upper input signal and determine if it is less than the signal within the diamond-shaped block diagram.
Reference numerals: 1. a housing; 2. a gas input channel; 3. a gas output channel; 4. a pressure measuring part; 41. a first pressure sensor; 42. a second pressure sensor; 5. a control module; 51. a PCB board; 52. a rechecking unit; 6. a multi-way connection; 61. a plug; 7. a first diaphragm valve; 8. a diaphragm valve support; 9. a second diaphragm valve; 10. a pressure reducer; 11. a flow detector.
Detailed Description
The application is described in further detail below in connection with fig. 1-7.
The embodiment of the application discloses an intelligent control high-precision air supply system which is applied to the condition of simultaneously connecting two gas storage tanks, when oxygen in one gas storage tank is about to be exhausted and sufficient oxygen cannot be provided for a patient, the other gas storage tank can be automatically switched to provide oxygen for the patient through the intelligent control high-precision air supply system provided by the application, so that sufficient oxygen supply environment is provided for the patient. It should be understood that the above-mentioned simultaneous connection of a plurality of gas storage tanks means that two gas storage tanks are respectively connected with a gas supply pipeline and then combined into a pipeline for outputting gas so as to allow a patient to inhale oxygen, and in general, only one gas storage tank supplies oxygen to the patient; in practical application, two gas storage tanks are adopted alternately, but more than two gas storage tanks can be adopted alternately, and only a gas supply pipeline communicated with the gas storage tanks is communicated with a pipeline for outputting gas. The gas storage tank mainly refers to an oxygen bottle.
Referring to fig. 1 and 2, an intelligent control high-precision gas supply system comprises a housing 1, wherein at least two gas input channels 2, one gas output channel 3, a pressure measuring piece 4 and a control module 5 are arranged in the housing 1; wherein, a screen which is convenient for displaying data information and a button which is convenient for switching on and switching off can be arranged on the outer side of the shell 1; one end of the gas inlet and outlet channel is communicated with one end of the gas output channel 3, and one end, far away from each other, of the gas input channel 2 and the gas output channel 3 extends out of the shell 1, and the actual length can be adjusted according to the distance between the gas storage tank and the patient so as to facilitate oxygen inhalation of the patient. When the pressure measuring piece 4 is installed on the gas input channels 2, each gas input channel 2 needs to be installed with the pressure measuring piece 4 to obtain the air pressure of each gas input channel 2; in actual use, the power end of the pressure measuring piece 4 is communicated with a power supply to maintain operation, the signal end of the pressure measuring piece 4 is connected with the control module 5 to output signals to the control module 5, and the pressure measuring piece 4 can be connected with the power supply and the control module 5 in a conventional welding or plug-in mode. In order to save the cost, the pressure measuring member 4 may be mounted on the gas output channel 3, so that the detected gas pressure in the gas output channel 3 can more accurately detect the gas pressure of the oxygen inhaled by the patient.
In detail, the gas input channels 2 and the gas output channels 3 may be conventional oxygen transmission pipes such as stainless steel or aluminum alloy, and a multi-way connector 6 is used at the connection between at least two gas input channels 2 and the gas output channels 3, so that the gas output channels 3 can communicate with any gas input channel 2. The number of the communication ports of the multi-way connection member 6 is not less than the sum of the numbers of the gas input channels 2 and the gas output channels 3, and if the number of the communication ports of the multi-way connection member 6 is greater than the sum of the numbers of the gas input channels 2 and the gas output channels 3, the unused communication ports can be sealed by plugs 61, such as NPT plugs 61, etc.
Further, in order to ensure that oxygen flows from the gas storage tank in one direction towards the patient, a one-way valve is provided at the end of the gas inlet channel 2 close to the gas outlet channel 3, and in the embodiment of the application, a first membrane valve 7 may be used. In order to limit the position of the first diaphragm valve 7, the diaphragm valve support 8 is detachably mounted in the casing 1, and mounting holes, such as threaded holes or through holes, can be preset in the diaphragm valve support 8, so that the diaphragm valve support 8 can be mounted in different fixing modes.
Similarly, a second membrane valve 9 is provided in the middle of the gas outlet channel 3 so that oxygen can only flow to the patient. In the embodiment of the present application, the second diaphragm valve 9 and the first diaphragm valve 7 may be the same in structure, and therefore, the second diaphragm valve 9 may also be mounted on the housing 1 by the same diaphragm valve bracket 8.
The power ends of the first diaphragm valve 7 and the second diaphragm valve 9 are communicated with power sources, and the control ends are controlled by the control module 5, so that medical staff can adjust the opening degree of the first diaphragm valve 7 or the second diaphragm valve 9 through the control module 5 to control the air pressure of oxygen.
Referring to fig. 2 and 3, the gas output channel 3 is provided with a pressure reducer 10 on one side of the second diaphragm valve 9 far away from the second pressure sensor 42, the pressure reducer 10 is in signal connection with the control module 5, and medical staff can adjust the pressure reducer 10 through the control module 5 based on the oxygen inhalation requirement of the patient, so as to control the oxygen pressure inhaled by the patient to meet the oxygen inhalation requirement of the patient.
In summary, the medical staff can adjust the opening degree of the first diaphragm valve 7, the second diaphragm valve 9 and the pressure reducer 10 through the control module 5 to adjust the air pressure of the oxygen, thereby meeting the oxygen inhalation requirement of the patient.
Further, the pressure measuring part 4 may be configured as a pressure sensor or other components capable of detecting the air pressure in the pipeline and converting the air pressure into an electrical signal for output. In the embodiment of the application, the pressure measuring piece 4 comprises a first pressure sensor 41 and a second pressure sensor 42, wherein the first pressure sensor 41 is arranged at one end of the gas input channel 2, which is far away from the gas output channel 3, so as to more accurately detect the oxygen pressure output by the gas storage tank. The second pressure sensor 42 is installed at one end of the gas output channel 3, which is far from the gas input channel 2, so as to more precisely detect the pressure of oxygen inhaled by the patient. In order to maintain the stability of the pressure measuring part 4, the pressure measuring part 4 may be fixedly installed on the inner side wall of the housing 1.
In some embodiments, the gas pressure of the oxygen may be detected using only the first pressure sensor 41 or only the second pressure sensor 42, since the total length of the gas input channel 2 and the gas output channel 3 is short.
The power end of the control module 5 is also required to be communicated with a power supply, the signal input end of the control module 5 is connected with the pressure measuring piece 4 and receives the output signal of the pressure measuring piece 4, and the control module 5 outputs a corresponding control instruction based on the output signal of the pressure measuring piece 4. In the embodiment of the present application, the control module 5 may be in a form of combination of software and hardware, that is, a control chip and a peripheral circuit (such as a clock module) may be soldered on the PCB 51; the PCB 51 may be mounted and fixed on the inner side wall of the housing 1 by means of screws, etc., and the control chip may burn a software program for implementing the functions required to be implemented by the following control module 5.
The control module 5 receives the output signal of the pressure measuring part 4 and judges whether the output signal of the pressure measuring part 4 is smaller than a reference value; when the oxygen in the gas storage tank is about to be exhausted, the output signal of the pressure measuring piece 4 is smaller than a reference value, and the control instruction output by the control module 5 indicates the gas storage tank for switching oxygen supply; when the oxygen in the gas storage tank is not exhausted, the output signal of the pressure measuring part 4 is greater than the reference value, and the control module 5 may not output the control command.
The reference value represents an air pressure signal value corresponding to the oxygen in the current gas storage tank to be exhausted or in the range to be exhausted, and the expression form of the air pressure signal value can be a current value or a voltage value, but the air pressure signal value needs to be consistent with the expression form of the output signal of the pressure measuring piece 4, so that the control module 5 can conveniently judge and output a judging result.
Referring to fig. 4, there is shown an example of 2 first pressure sensor arrangements. In order to accurately control the pressure of oxygen inhaled by the patient, the signal output ends of the first pressure sensor 41 and the second pressure sensor 42 are respectively connected with the control module 5 in a signal mode. The control module 5 can output corresponding control instructions based on the output signals of the first pressure sensor 41 and the second pressure sensor 42, so as to provide more proper amount of oxygen for the patient in time.
In detail, the control module 5 defines the reference values as a first reference value, a second reference value, and a third reference value, wherein the air pressure represented by the first reference value is greater than the air pressure represented by the second reference value.
When the oxygen in the current gas storage tank is near to exhaustion, the control module 5 can detect that the output signal of the current first pressure sensor 41 is smaller than a first reference value, and the control module 5 outputs a control instruction for opening a first diaphragm valve 7 corresponding to the other gas storage tank; here, the opening of the first diaphragm valve 7 corresponding to the other gas storage tank may also be set based on the setting of the first reference value, thereby ensuring that sufficient oxygen can be supplied to the patient.
It should be understood that the first reference value may be further set to a plurality of signal values in a segmented manner, and the opening of the first diaphragm valve 7 may be correspondingly set, so that when the current gas storage tank cannot sufficiently supply oxygen to the patient, oxygen in another gas storage tank may be added in a segmented manner, so as to achieve more accurate control of the oxygen amount inhaled by the patient.
When the oxygen in the current gas storage tank continues to be consumed and gradually approaches depletion, the control module 5 can detect that the output signal of the current first pressure sensor 41 is smaller than the second reference value at this time, and the control module 5 outputs an off instruction and a full on instruction. The turn-off instruction is used for controlling the first diaphragm valve 7 corresponding to the current gas storage tank to be closed, so that the current gas storage tank does not provide oxygen for a patient; the full-on instruction is used for controlling the opening of the first diaphragm valve 7 corresponding to the other gas storage tank to be fully opened or opened to the opening meeting the current oxygen inhalation requirement of the patient.
Similarly, the third benchmark value is set by the medical staff based on the oxygen inhalation requirement of the patient, and refers to the air pressure signal value corresponding to the oxygen inhalation requirement of the current patient. When the oxygen in the gas output channel 3 is lower than the oxygen inhalation requirement of the patient, the control module 5 judges that the output signal of the second pressure sensor 42 is smaller than the third reference value, and then the control module 5 outputs an adjustment instruction to prompt the medical staff. The specific adjustment may be to increase the opening degree of the second diaphragm valve 9 or to increase the output air pressure of the pressure reducer 10.
Further, referring to fig. 2 and 3, in order to confirm whether or not the gas input channel 2 and the gas output channel 3, the elbow, the multi-way connector 6, and the like leak, in the embodiment of the present application, a flow detector 11 and a recheck unit 52 are further provided. Wherein, the flow detector 11 is installed on the gas input channel 2, is used for detecting the gas flow in the gas input channel 2; the rechecking unit 52 is built into the control module 5 for detecting again based on the data or signals that have been obtained, whether there is a leak.
Specifically, referring to fig. 2 and 5, each gas input channel 2 is provided with a flow detector 11 in a communicating manner, and the flow detector 11 may use components such as a flow sensor capable of detecting the flow of gas. Similarly, the power end of the flow detector 11 is connected with a power supply, the signal output end is in signal connection with the control module 5, and the flow detector 11 outputs an electric signal to the control module 5; the control module 5 is able to receive and respond to the output signals of the flow detector 11, while at the same time the control module 5 appends a time stamp when receiving the output signals of the flow detector 11, so that each output signal of the flow detector 11 corresponds to a time stamp.
The control module 5 defines a preset time range, and the preset time range refers to a time range in which the current oxygen amount in the oxygen tank is supplied to the current patient for oxygen inhalation.
First, the control module 5 calculates the obtained time length, and it should be understood that the time length herein refers to the time length from the time when the flow detector 11 starts to detect the gas flow to the current time, and the actual calculation may be based on the time stamp added to the output signal of the flow detector 11. It should be understood that in the embodiment of the present application, the time when the flow detector 11 outputs the signal is simultaneously with the output of the signals of the first pressure sensor 41 and the second pressure sensor 42.
Meanwhile, the control module 5 defines a time preset length, wherein the time preset length refers to a time period in which oxygen inhalation requirements of patients can be sufficiently met in the current gas storage tank, and a measurement unit of the time preset length is required to be consistent with a measurement unit of the time length.
Secondly, the control module 5 judges whether the time length is within a preset time range, and if the time length is within the preset time length, the control module 5 judges whether the output signal of the flow detector 11 is lower than a gas flow reference value or within a reference range where the gas flow is located; if the gas leakage condition is lower than the preset gas leakage condition, judging that the current gas input channel 2 has gas leakage condition, and outputting a first gas leakage early warning signal by the control module 5; if the pressure is higher than the preset pressure, judging that no air leakage exists in the current air input pipeline. The reference gas flow rate reference value or the reference range where the gas flow rate is located refers to the gas flow rate or the range where the gas flow rate is located corresponding to the oxygen inhalation requirement of the current patient.
Again, when the time length is within the time preset length, the control module 5 determines whether the output signal of the second pressure sensor 42 is lower than the air pressure reference value or within the reference range where the air pressure is located; if the pressure difference is lower than the preset value, judging that the air leakage condition exists in the channel between the flow detector 11 and the second pressure sensor 42, and outputting a second air leakage early warning signal by the control module 5; if the pressure is higher than the first threshold value, it is determined that there is no air leakage in the channel between the flow rate detector 11 and the second pressure sensor 42. The above-mentioned air pressure reference value or reference range of air pressure refers to the air pressure or range of air pressure corresponding to the current oxygen inhalation requirement of the patient.
The process can effectively form secondary early warning, and provides guarantee for the stability of vital signs of patients.
Further, referring to fig. 6, the healthcare worker may input the initial total amount in the gas storage tanks into the control module 5 at the time of replacement according to the amount of oxygen stored in each gas storage tank. Therefore, when receiving the output signal of the flow detector 11, the control module 5 can calculate the oxygen amount provided to the patient, and then can calculate the gas residual amount by combining the initial total amount. The specific calculation formula of the gas residual amount can be: gas remaining = initial total amount-gas flow represented by the output signal of flow detector 11.
The control module 5 defines a first early warning threshold value and a second early warning threshold value, wherein the first early warning threshold value refers to a value when the residual gas in the current gas storage tank is exhausted or is expressed as a range in which the residual gas in the current gas storage tank is exhausted; the second pre-warning threshold is a value when the residual gas in the current gas storage tank is near exhaustion or a range in which the residual gas in the current gas storage tank is near exhaustion, that is, the residual gas quantity represented by the second pre-warning threshold is larger than the residual gas quantity represented by the first pre-warning threshold, and the second pre-warning threshold is larger than the first pre-warning threshold.
When the gas remaining amount is smaller than the first early warning threshold, the control module 5 outputs a first early warning signal for prompting the medical staff that the current gas storage tank can be replaced.
When the gas residual amounts in the non-current gas storage tanks are smaller than the first early warning threshold value, at the moment, when the gas residual amounts in the current gas storage tanks are smaller than the second early warning threshold value, the control module 5 outputs a second early warning signal so as to remind medical staff that all the oxygen in all the current gas storage tanks of the patient is about to be completely exhausted, and the new gas storage tanks need to be replaced as soon as possible so as to meet the oxygen inhalation requirements of the patient. When the medical staff does not replace the gas storage tank in time, the patient needs to continuously inhale oxygen, so that the oxygen of the current gas storage tank is continuously consumed, and when the gas residual quantity of the current gas storage tank is smaller than the first early warning threshold value, the control module 5 outputs a third early warning signal.
In the embodiment of the application, the early warning emergency degree of the first early warning signal, the second early warning signal and the third early warning signal is increased in sequence. That is, when the healthcare worker observes the first warning signal, it is necessary to arrange to call a new gas storage tank; when the medical staff observes the second early warning signal, a new gas storage tank needs to be arranged to be replaced; when the medical staff observes the third warning signal, a new gas storage tank needs to be replaced immediately. The specific first early warning threshold and the second early warning threshold can be set by medical staff, and the reserved sufficient time is ensured to be replaced.
The process can effectively form three-level early warning, and the two-level early warning is matched to form multiple multi-level early warning, so that the stability of vital signs of patients is guaranteed.
In order to ensure the accuracy of the above-described multiple multi-stage early warning, in the embodiment of the present application, the check detection is performed by the rechecking unit 52. Since the recheck unit 52 determines whether or not the gas leaks based on the remaining gas amount, the output signal of the first pressure sensor 41, and the output signal of the second pressure sensor 42, the recheck unit 52 can check and detect the gas in synchronization with each other after receiving the signals, and it is unnecessary to perform the check and detection after the completion of the multiple multi-stage warning.
In detail, referring to fig. 7, the control module 5 presets a correspondence relationship between the remaining amount of gas and the first pressure sensor 41, and presets a correspondence relationship between the remaining amount of gas and the second pressure sensor 42; in the embodiment of the present application, the remaining amount of gas corresponds to the output signal of the first pressure sensor 41 one by one, and the remaining amount of gas corresponds to the output signal of the second pressure sensor 42 one by one.
When the review unit 52 detects that the remaining amount of gas and the output signal of the first pressure sensor 41 are in a non-correspondence relationship, it is indicated that there is a gas leakage condition in the gas input channel 2 between the gas storage tank and the first pressure sensor 41. When the review unit 52 detects that the remaining amount of gas and the output signal of the second pressure sensor 42 are in a non-corresponding relationship, it is indicated that there is a gas leakage in the gas input channel 2 between the gas storage tank and the second pressure sensor 42. Either of the above two leakage conditions occurs, the rechecking unit 52 outputs a third leakage warning signal to alert the healthcare worker.
The implementation principle of the embodiment of the application is as follows: when the patient inhales oxygen by using the gas storage tank, the air pressure of the gas input channel 2 is detected by the first pressure sensor 41, the air pressure of the gas output channel 3 is detected by the second pressure sensor 42, the control module 5 can judge whether the oxygen in the current oxygen tank is sufficient according to the acquired air pressure of the current gas input channel 2, and when the oxygen in the current oxygen tank is insufficient to maintain vital signs of the patient, the control module 5 can start the other gas input channel 2, so that the patient can inhale sufficient oxygen to maintain vital signs. Meanwhile, by acquiring signals such as output signals and time length of the flow detector 11, multiple multi-stage early warning and re-detection are formed, and the purpose of providing a sufficient oxygen supply environment for a patient is achieved.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (10)

1. An intelligent control high-precision gas supply system is characterized by comprising at least two gas input channels (2) and a gas output channel (3), wherein one end of each gas input channel (2) is communicated with the same end of the gas output channel (3); the gas input channel (2) or the gas output channel (3) is communicated with a pressure measuring piece (4), and the pressure measuring piece (4) is used for detecting the pressure of gas and outputting the pressure as an electric signal;
The pressure measuring piece (4) is in signal connection with a control module (5), and the control module (5) receives and outputs a control instruction based on an output signal of the pressure measuring piece (4), wherein the control instruction is used for controlling the on-off of the gas input through vital sign channels; when the output signal of one pressure measuring piece (4) indicates that the current pressure of the gas input channel (2) is smaller than a reference value, the control module (5) opens the other gas input channel (2) through the control command so as to enable the gas pressure of the gas output channel (3) to be kept within a preset range.
2. The intelligent control high-precision gas supply system according to claim 1, wherein the pressure measuring piece (4) comprises a first pressure sensor (41) and a second pressure sensor (42), wherein the first pressure sensor and the second pressure sensor are installed on the gas input channel (2), and the second pressure sensor (42) is installed on the gas output channel (3) to be communicated;
The signal output end of each first pressure sensor (41) is in signal connection with the signal input end of the control module (5), the signal output end of the second pressure sensor (42) is in signal connection with the signal input end of the control module (5), and the control module (5) outputs a control instruction based on the current output signals of the first pressure sensors (41) and the second pressure sensors (42) and the first reference value.
3. The intelligent control high-precision gas supply system according to claim 2, wherein the reference values include a first reference value and a second reference value, the first reference value representing a pressure greater than a pressure represented by the second reference value;
When the output signal of the first pressure sensor (41) is smaller than a second reference value, the control module (5) outputs a first turn-off instruction so that the gas input channel (2) is closed currently, and meanwhile, the control module (5) outputs a complete turn-on instruction so that the other gas input channel (2) is completely turned on.
4. An intelligent control high-precision gas supply system according to claim 2 or 3, wherein each gas input channel (2) is further communicated with a flow detector (11), the flow detectors (11) are in signal connection with the control module (5), and the control module (5) judges whether gas leakage exists between the gas input channels (2) and (2) based on output signals of the flow detectors (11), time length and output signals of the second pressure sensors (42);
If the time length is within a preset time range and the output signal of the flow detector (11) is lower than a gas flow reference value or a reference range where the gas flow is located, judging that the gas input channel (2) has a gas leakage condition currently, and outputting a first gas leakage early warning signal by the control module (5);
If the time length is within a preset time range and the output signal of the second pressure sensor (42) is lower than an air pressure reference value or within a reference range where the air pressure is located, the control module (5) judges that an air leakage condition exists in a channel between the flow detector (11) and the second pressure sensor (42), and the control module (5) outputs a second air leakage early warning signal;
Wherein the time length is a time length from a time when the flow detector (11) starts to detect the gas flow to a current time.
5. The intelligent control high-precision gas supply system according to claim 4, wherein the control module (5) presets an initial total amount in each gas storage tank, and the control module (5) calculates a gas remaining amount in the current gas storage tank based on the current time length and an output signal of the flow detector (11);
When the gas residual quantity is smaller than a first early warning threshold value, the control module (5) outputs a first early warning signal, wherein the first early warning threshold value is a value when the residual gas in the gas storage tank is exhausted currently or is expressed as a range when the residual gas in the gas storage tank is exhausted currently.
6. The intelligent control high-precision gas supply system according to claim 5, wherein the control module (5) defines a second pre-warning threshold value when the gas remaining amount in the gas storage tank is not present and is smaller than the first pre-warning threshold value, the second pre-warning threshold value being larger than the first pre-warning threshold value; when the current gas residual quantity in the gas storage tank is smaller than the second early warning threshold value, the control module (5) outputs a second early warning signal, and when the current gas residual quantity in the gas storage tank is smaller than the first early warning threshold value, the control module (5) outputs a third early warning signal, wherein early warning emergency degrees of the first early warning signal, the second early warning signal and the third early warning signal are sequentially increased.
7. The intelligent control high-precision gas supply system according to claim 5, wherein the control module (5) includes a rechecking unit (52), the rechecking unit (52) judging whether gas leaks or not based on the remaining amount of gas, an output signal of the first pressure sensor (41), and an output signal of the second pressure sensor (42);
The gas residual quantity corresponds to the output signals of the first pressure sensor (41) one by one, and the gas residual quantity corresponds to the output signals of the second pressure sensor (42) one by one; when the rechecking unit (52) detects that the residual gas amount is in a non-corresponding relation with the output signal of the first pressure sensor (41) or the output signal of the second pressure sensor (42), the rechecking unit (52) outputs a third air leakage early warning signal.
8. An intelligent control high-precision gas supply system according to claim 1 or 3, characterized in that a first diaphragm valve (7) is arranged on the gas input channel (2), the first diaphragm valve (7) is controlled by the control module (5), and the control module (5) controls the opening degree of the first diaphragm valve (7) based on the gas supply requirement;
The gas output channel (3) is provided with a second diaphragm valve (9), the second diaphragm valve (9) is controlled by the control module (5), and the control module (5) controls the opening degree of the second diaphragm valve (9) based on the gas supply requirement.
9. The intelligent control high-precision air supply system according to claim 8, wherein the first diaphragm valve (7) and the second diaphragm valve (9) are both installed on a diaphragm valve bracket (8), and installation holes for positioning are preset in the diaphragm valve bracket (8).
10. The intelligent control high-precision gas supply system according to claim 9, wherein the joints of the gas input channels (2) and the gas output channels (3) are communicated with the same multi-way connecting piece (6), and a one-way valve for limiting the flow direction of gas is communicated between the gas input channels (2) and the multi-way connecting piece (6).
CN202410274317.8A 2024-03-11 2024-03-11 Intelligent control high-precision air supply system Active CN117959544B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011022150A (en) * 2009-07-17 2011-02-03 Cosmo Technology Co Ltd Gas leakage detection device and method for the same
CN202002675U (en) * 2011-02-11 2011-10-05 石家庄诺利达医疗器械有限公司 Controllable digital oxygen flow meter
CN211132541U (en) * 2019-07-04 2020-07-31 四川空分医用设备工程股份有限公司 Medical detection system of medical centralized oxygen supply system
CN112546388A (en) * 2020-12-04 2021-03-26 可孚医疗科技股份有限公司 Self-adaptive pulse type oxygen generator and oxygen supply control method and device thereof
KR20220120911A (en) * 2021-02-24 2022-08-31 조선기기주식회사 Mobile oxygen supply system
CN218980079U (en) * 2022-07-26 2023-05-09 澳柯赛(桂林)医疗器械有限公司 Intelligent oxygen supply device for ambulance

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011022150A (en) * 2009-07-17 2011-02-03 Cosmo Technology Co Ltd Gas leakage detection device and method for the same
CN202002675U (en) * 2011-02-11 2011-10-05 石家庄诺利达医疗器械有限公司 Controllable digital oxygen flow meter
CN211132541U (en) * 2019-07-04 2020-07-31 四川空分医用设备工程股份有限公司 Medical detection system of medical centralized oxygen supply system
CN112546388A (en) * 2020-12-04 2021-03-26 可孚医疗科技股份有限公司 Self-adaptive pulse type oxygen generator and oxygen supply control method and device thereof
KR20220120911A (en) * 2021-02-24 2022-08-31 조선기기주식회사 Mobile oxygen supply system
CN218980079U (en) * 2022-07-26 2023-05-09 澳柯赛(桂林)医疗器械有限公司 Intelligent oxygen supply device for ambulance

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