CN115282427A - High-flow humidification oxygen therapy system based on RT-Thread system - Google Patents
High-flow humidification oxygen therapy system based on RT-Thread system Download PDFInfo
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- 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
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- 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
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- 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
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- 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
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- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
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- A61M2016/102—Measuring a parameter of the content of the delivered gas
- A61M2016/1025—Measuring a parameter of the content of the delivered gas the O2 concentration
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Abstract
The invention relates to a high-flow humidification oxygen therapy system based on an RT-Thread system, which comprises a power supply, a main control unit, a fan driving module, a heating plate control module, a front panel module, a sensor unit and a control and alarm module, wherein the main control unit is connected with the fan driving module; the output end of the main control unit is connected with the fan through a fan driving module and used for controlling the motor to run and adjusting the rotating speed of the motor in real time according to the acquired data and the breathing state of the user; the main control unit is also connected with the heating plate through a heating plate control module and used for heating the heating plate; the main control unit is also connected with the front panel module and used for key operation and display; the main control unit is also connected with the sensor unit and is used for acquiring corresponding signals in real time to monitor whether the signals meet the control requirements; the main control unit is also connected with the control and alarm module and is used for performing sound-light alarm and touch screen control. The invention has high data measurement precision and strong reliability and can meet the humanized requirement of patients.
Description
Technical Field
The invention belongs to the technical field of high-flow humidification oxygen therapy, relates to a high-flow humidification oxygen therapy system, and particularly relates to a high-flow humidification oxygen therapy system based on an RT-Thread system.
Background
High flow humidified oxygen therapy has been widely used in the clinic in recent years as a new respiratory support technology, and there are many similarities in the therapeutic principle with noninvasive positive pressure ventilation. From the theory of operation, all be that the drive of electric turbine forms high-speed air current, it is controllable to realize the flow through the solenoid valve, and the air current all can be heated and moisturized, is all positive pressure ventilation in the traditional meaning, can maintain certain level expiration terminal positive pressure, realizes that the air flue is open, reduces the dead space, improves and ventilates, and allows open air flue to take place to leak gas.
And high flow humidifying oxygen is treated and is possessed its distinctive advantage, is favorable to promoting patient's travelling comfort, especially when respiratory function is unstable, does work to reducing breathing, avoids respiratory function especially important, and it provides following function:
(1) Providing stable high oxygen absorption concentration and quickly and effectively improving blood oxygen;
(2) Flushing physiological anatomical dead space and reducing carbon dioxide re-inhalation;
(3) Forming a certain positive airway pressure to keep the airway smooth;
(4) The sufficient humidification and the temperature change enable the mucus and cilia cleaning function of the air passage to be in the best state;
(5) Comfortable patient experience and improved oxygen therapy compliance.
Meanwhile, the high-flow humidifying oxygen therapy system can heat, humidify and supply oxygen. The nasal catheter gives heated and humidified high-concentration oxygen, and the oxygen concentration is constant because the air flow can be set to exceed the flow level of the inspiration peak of most patients with respiratory failure; the heating and humidifying functions can protect the mucous membrane of the air passage and enhance the cleaning capability of the mucociliary. Reasonable air passage humidification can dilute air passage secretion, keep the air passage smooth and moist, maintain the normal function of the air passage and effectively prevent complications such as lung infection and the like.
However, the existing domestic high-flow oxygen therapy apparatus starts late, and the problems that the acquired measurement data is low in precision, the hardware response time is long, the use comfort of a patient is low, and the functions of monitoring, alarming, displaying and the like cannot meet the humanized requirements of the patient exist.
Through searching, the published patent documents which are the same as or similar to the invention are not found.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a high-flow humidification oxygen therapy system based on an RT-Thread system, which has the advantages of reasonable design, high measurement data precision and strong reliability and can meet the humanized requirements of patients.
The invention solves the practical problem by adopting the following technical scheme:
a high-flow humidification oxygen therapy system based on an RT-Thread system comprises a power supply, a main control unit, a fan driving module, a heating plate control module, a front panel module, a sensor unit and a control and alarm module; the output end of the main control unit is connected with the fan through a fan driving module and used for controlling the motor to run and adjusting the rotating speed of the motor in real time according to the acquired data and the breathing state of the user; the main control unit is also connected with the heating plate through a heating plate control module and used for heating the heating plate; the main control unit is also connected with the front panel module and used for key operation and display; the main control unit is also connected with the sensor unit and is used for acquiring corresponding signals in real time to monitor whether the signals meet the control requirements; the main control unit is also connected with the control and alarm module and is used for performing sound-light alarm and touch screen control.
And the main control module selects an RT1052 microcontroller based on an RT-Thread operating system.
Further, the sensor unit includes: a pressure sensor and a flow sensor for respectively detecting the motor output flow rate and pressure to control the flow of gas provided to the patient; an ultrasonic oxygen concentration sensor for detecting an oxygen concentration; and the temperature and humidity sensor is used for directly collecting the temperature and humidity of the air inlet so as to achieve the optimal control of heating and humidification.
Moreover, the control and alarm module comprises an LCD touch screen, indicator lights with various colors and a loudspeaker, and has the functions of display control and sound-light alarm.
And the main control unit is also connected with the data storage module and used for storing data by using an SD card.
And the main control unit is also connected with the proportional valve, and the control of the oxygen concentration is achieved through the control of the opening degree of the proportional valve.
And the main control unit is also connected with the WIFI module and used for remote communication.
And the output end of the power supply module is respectively connected with the main control unit, the fan driving module, the heating plate control module, the front panel module, the sensor unit, the control and alarm module, the proportional valve, the loudspeaker and the data storage module, and supplies power to the main control unit, the fan driving module, the heating plate control module, the front panel module, the sensor unit, the control and alarm module, the proportional valve, the loudspeaker and the data storage module.
The invention has the advantages and beneficial effects that:
1. the invention provides a high-flow humidification oxygen therapy system based on an RT-Thread system, which can meet the functional and performance requirements on high-flow oxygen supply in a medical scheme. In practical tests and application, the device can realize the function of providing relatively constant oxygen inhalation concentration (21-100), temperature (31-37 ℃) and humidity high-flow (8-80L/min) gas for a patient, and performs oxygen therapy through the nasal plug, thereby having good comfort.
2. In order to solve the real-time monitoring problem in the treatment process of a patient, the RTC module and the WIFI module which are not powered off can be used for waking up the equipment at regular time, so that the system management of a nurse station is facilitated, and a solution is provided for the actual problem in the medical industry.
Drawings
FIG. 1 is a block diagram of the hardware architecture of the present invention;
FIG. 2 is an electrical architecture diagram of the present invention;
FIG. 3 is a block diagram of the power supply module of the present invention;
FIG. 4 is a gas path block diagram of the present invention;
FIG. 5 is a software architecture diagram of the present invention;
FIG. 6 is a block diagram of a closed loop system of the present invention;
FIG. 7 is a page logic diagram of the present invention;
FIG. 8 is a block diagram of a standby module of the present invention;
FIG. 9 is a block diagram of the operational modules of the present invention;
FIG. 10 is a high flow mode breath trigger flow diagram of the present invention;
fig. 11 is a flow chart of the high flow humidified oxygen therapy ventilation mode of the present invention.
Detailed Description
The embodiments of the invention will be described in further detail below with reference to the accompanying drawings:
a high-flow humidification oxygen therapy system based on an RT-Thread system is shown in figures 1 to 3 and comprises a power supply, a main control unit, a fan driving module, a heating plate control module, a front panel module, a sensor unit and an operation and alarm module; the output end of the main control unit is connected with the fan through a fan driving module and used for controlling the motor to run and adjusting the rotating speed of the motor in real time according to the acquired data and the breathing state of the user; the main control unit is also connected with the heating plate through a heating plate control module and used for heating the heating plate; the main control unit is also connected with the front panel module and used for key operation and display; the main control unit is also connected with the sensor unit and is used for acquiring corresponding signals in real time to monitor whether the signals meet the control requirements; the main control unit is also connected with the control and alarm module and is used for performing sound-light alarm and touch screen control.
In this embodiment, the main control module selects an RT1052 microcontroller based on an RT-Thread operating system.
In this embodiment, the sensor unit includes: a pressure sensor and a flow sensor for respectively detecting the motor output flow rate and pressure to control the flow of gas provided to the patient; an ultrasonic oxygen concentration sensor for detecting an oxygen concentration; and the temperature and humidity sensor is used for directly collecting the temperature and humidity of the air inlet so as to achieve the optimal control of heating and humidification.
In this embodiment, the control and alarm module includes an LCD touch screen, indicator lights of various colors, and a speaker, and has display control and audio-optical alarm functions.
In this embodiment, the main control unit is further connected to a data storage module, and is configured to store data using an SD card.
In this embodiment, the main control unit is further connected to a proportional valve, and the control of the oxygen concentration is achieved through the control of the opening degree of the proportional valve.
In this embodiment, the main control unit is further connected with the WIFI module for remote communication.
In this embodiment, the output end of the power supply module is respectively connected with the main control unit, the fan driving module, the heating plate control module, the front panel module, the sensor unit, the control and alarm module, the proportional valve, the loudspeaker and the data storage module, and supplies power to the main control unit, the fan driving module, the heating plate control module, the front panel module and the sensor unit.
The composition and function of each module in the system are further described as follows:
1. the main control module: the system is based on an RT-Thread operating system, an RT1052 microcontroller is selected, and a voltage platform is 3.3V. Considering the medical environment, the medical environment is considered, and the functions of 256KB of a program memory, 48KB of a data memory, 5 UARTs, 2 keys, 1 pass lock button, SD card support, 2.0 full-speed USB, RTC in an internal band, 16-channel ADC sampling, more than 8 GPIOs, 3-channel SPI, 2-channel IIC, 1 16-bit LCD interface, 11-channel TIMER, working frequency greater than 72MHz and the like are used;
2. a power supply module: the network power supply is divided into two parts, wherein one part is converted into a direct current power supply and adopts a built-in medical power supply meeting IEC60601-1 and GB/T9706 standards; the other part supplies power to the heating plate. The internal direct current part is divided into the following parts: peripheral power supplies such as proportional valve power supply, motor control and drive part power supply, flow sensor power supply, display and temperature and humidity acquisition, loudspeaker power supply, processor and data storage power supply are adopted, and all parts are isolated by a power supply filter circuit to reduce mutual interference;
3. a motor driving module: the motor control and drive circuit of the system controls the rotation and braking of the motor by the single chip microcomputer IRMCF171, communicates with the main processor through UART, and in order to prevent the fault of the single chip microcomputer IRMCF171, the main processor controls the power supply voltage of the IRMCF 171. The control principle is as follows: the main processor sends a preset motor rotating speed to the single-chip microcomputer IRMCF171 by setting an output flow value, the single-chip microcomputer IRMCF171 enables the driving chip to work by controlling the high-low side controller, the motor is controlled to run, the expected motor rotating speed control function is achieved by controlling the frequency, and meanwhile the single-chip microcomputer IRMCF171 detects the counter electromotive force of the motor stator and the rotor current to confirm the motor rotating speed; the main processor forms negative feedback by measuring the pressure and flow of the output port of the motor, and adjusts the rotating speed of the motor through the single chip microcomputer IRMCF171 again.
4. A sensor unit: a pressure sensor and a flow sensor are used to sense the motor output flow rate and pressure, respectively, to control the flow of gas provided to the patient. The pressure and flow of the oxygen inlet obtain corresponding signals through related sensors, and the corresponding signals can be used as the assistance of oxygen concentration judgment; the oxygen concentration detection adopts an ultrasonic oxygen concentration sensor, and directly collects an analog voltage signal output by the ultrasonic oxygen concentration sensor so as to determine whether the output oxygen concentration meets the control requirement; the temperature and humidity acquisition is to directly acquire the temperature and humidity of an air inlet so as to achieve the optimal control of heating and humidification.
5. The control and alarm module: the system has the acousto-optic alarm function; the hardware has indicator lamps driven by IO in three colors, one yellow and one red for low and middle level alarm and high level alarm indication, and the other white for normal prompt. The LCD is used for indicating different alarm light displays through flashing red or yellow prompting stars; the alarm sound part controls a power amplifier to drive a loudspeaker by a main control module, and has the functions of power failure detection and key muting.
6. A data storage module: the system uses an SD card to store data, a main processor reads and writes the data, an SPI bus is used in a communication mode, and the data stored in the SD card can be output to a PC through a card reader by the main processor; storing the information content of onboard Liquid Crystal Display (LCD), and adopting serial NORFLASH in a serial SPI interface mode with the capacity of 512K; and the storage and reading of the display information may be realized by the main processor GD32F 303.
7. A WIFI module: the module is responsible for accessing a WIFI or Bluetooth network, establishing a TCP/IP link with a remote monitoring server and finishing data packet exchange; the communication with the main controller is realized through a serial port;
the whole structure of the invention is as follows: taking a manual-automatic integrated machine type as an example, the gas path structure design diagram of the system is shown in fig. 4 and comprises a gas path main body, a motor cabin, a heating water tank and the like. The main casing body includes upper cover, drain pan and adds hot water tank etc. and different structures directly adopt the screw lock to attach + sealed rubber ring's mounting means, satisfy IP65 protection grade through the test.
In the aspect of application software, the software scheme of the high-flow oxygen therapy system is embedded in the single chip microcomputer and is matched with other components to form the whole system, and the high-flow oxygen therapy system has good compatibility and expandability. The software is compatible with various models of oxygen therapy apparatuses, and the software can be matched with the corresponding models only by loading different configuration files. The software interacts with a user through the liquid crystal display and the keys, collects and analyzes working data in the working process, and automatically controls the output of flow, temperature and the like according to a set mode.
The whole software architecture scheme adopts a layered structure and realizes function modularization, so that a display layer, service logic and bottom layer drive are clearly separated, and the openness of the structure, the expandability and maintainability of functions and the development parallelism are ensured.
The software architecture of the high flow oxygen therapy instrument is shown in fig. 5. The current software uses an RT-Thread operating system and can be divided into five layers: the system comprises a BOOT layer, a hardware driving layer, an abstract driving layer, a POSIX layer and an application layer, so that coupling in software can be reduced to the maximum extent, and expandability is enhanced.
The machine system can work according to preset settings, and can correspondingly adjust the characteristics of the output gas such as pressure, flow, time sequence and the like according to the physiological parameters related to the respiration of the patient. Therefore, the machine system is a closed loop system integrating control, execution, feedback and analysis, as shown in fig. 6.
For the production process, the machine system can detect each functional component of the system according to preset flow steps, analyze whether the component is normal or not according to feedback parameters, prompt production personnel in time when abnormality occurs, and avoid quality problems of the machine. The power component of the system is a blowing motor, and the control of the gas pressure and flow is achieved by controlling the rotating speed of the motor. The feedback component is a pressure sensor, a flow sensor, a temperature and humidity sensor, an oxygen concentration sensor and a driving circuit thereof. The actuating means comprises a proportional valve (if provided) through which control of the oxygen concentration is achieved by control of the degree of opening and closing of the proportional valve. And the singlechip program completes the analysis, state display and adjustment of the system on the recorded data.
The software is planted in the single chip microcomputer and is matched with other components to form the whole system. On the one hand, the software must have a corresponding interface for communicating with these systems. In addition to hardware support, the software sets up corresponding interrupt response and interrupt handlers for them. On the other hand, as the core of the system, the main program of the single chip microcomputer runs through the whole work flow and analyzes the collected data. Through the combination of software and hardware, the oxygen therapy instrument can realize the following functions:
the data acquisition function: the equipment can collect and monitor the following parameters: pressure, flow, motor speed, motor current, temperature, oxygen concentration and the like, and the sampling frequency is 100Hz. When the oxygen therapy instrument is connected with a designated blood oxygen finger stall, the blood oxygen, the pulse rate and the ROX index can be monitored, and the sampling frequency is 1Hz;
the data storage function: the device can record the use log of the machine on the Flash card and the SD card;
the motor control function: the machine can control the rotating speed of the motor in real time according to the acquired data and the breathing state of the user so as to ensure the target output flow;
the control function of the humidifier is as follows: in the working state, software needs to control the heating plate of the humidifier to work so as to ensure the humidity of the air blown out by the equipment;
the delayed shutdown function: pressing a stop button, continuously operating the equipment for at least 60 minutes at a flow rate not greater than 40L/min (the flow rate decreases with time), correspondingly increasing the end time by 10 minutes when the running time of the equipment is 1 hour, stopping outputting the equipment after 90 minutes at most, blowing away residual water vapor in the heating humidifier, and avoiding damaging the equipment;
the heating pipeline has the control function: in a working state, software needs to control the heating pipeline to work so as to ensure the temperature of gas blown out of the equipment, the temperature of the heating pipeline is adjustable within the range of 29 ℃ to 37 ℃, and the adjustment step length is 1 ℃;
oxygen proportional valve control function (as configured): in the working state, software needs to control the oxygen proportional valve to work so as to ensure that the oxygen concentration of the gas blown out by the equipment meets a set value;
and (3) hot standby: the on or off of the hot standby function can be set through the hidden menu; when the oxygen inhalation tube is started, after the oxygen inhalation tube is taken off by a patient, the oxygen concentration is reduced to 21 percent (not suitable for a manual machine type), the flow is reduced to below 40L/min, the heating is continued, the temperature of the gas output by the patient end does not exceed 43 ℃, and the maximum hot standby time is 30min;
patient management: when a new patient is created, the device needs to be restored to default settings, including default alarm settings that should be automatically selected; if the patient does not need to be created, the device is set to reserve the device for the previous use;
preheating: starting the machine to run, and reaching the set temperature of 29 ℃ within 10 minutes and 37 ℃ within 30 minutes from the initial temperature of 23 +/-2 ℃.
The UI of the oxygen therapy apparatus consists of a standby page, a working page and a menu page, wherein the menu page consists of a setting page, a trend chart page and an alarm setting page. Switching between pages is done according to the user's operation. Each page may be described as a separate module. The relationship between the pages is shown in fig. 7.
The standby and active modules are shown in fig. 8 and 9, respectively, wherein the standby mode is to wait for the user to select to enter the corresponding functional module. The user can operate the instrument through a key or a touch screen. After the working module is selected to enter the corresponding working module, the functions of controlling the motor to run, updating the working flow, adjusting the rotating speed of the motor according to the flow feedback value, enabling the machine to continuously output the flow and the like can be realized, and meanwhile, the working data is sampled and stored. The method monitors various interrupts including user key, serial port data interrupt, and the like in real time, performs self-check of the equipment state, and reacts to various emergency situations in time. The internal input items required by the working module comprise system setting information, time information, a working flow value, an interrupt signal and the like, and the corresponding output items comprise control of the rotating speed of the fan, completion of data acquisition, display, storage and the like.
In the aspect of a core control algorithm, in view of the fact that the flow is taken as a main control factor in the work of the high-flow humidification oxygen therapy system, the invention designs an algorithm for jointly judging the respiratory state by combining flow and pressure data measured in the device. The algorithm introduces new parameters: namely the resistance coefficient mu of the whole air passage after the patient wears the nasal oxygen tube.
ΔP＝μ×F 2
According to the gas dynamics principle, in the formula, delta P represents the difference value of the pressure at two ends of the gas circuit, mu represents the resistance coefficient of the gas circuit, and F represents the gas flow. From the above equation, the resistance coefficient μ in the cycle can be calculated from the average pressure and the average flow rate over the 60s cycle. When a patient breathes, the flow and the pressure in the equipment can be simultaneously changed due to the change of the airflow, the change is in a certain proportion with the resistance coefficient of the air circuit, and the change of the airflow generated by the breathing of the patient is reflected on the common change of the flow and the pressure in the equipment, so the breathing airflow of the patient can be obtained through the flow and the pressure which are acquired in real time and the resistance coefficient which is just calculated:
in the formula F x Representing the respiratory flow of the patient, F is the flow in the equipment acquired in real time, P is the pressure in the equipment acquired in real time, and mu is the resistance coefficient calculated in the last step. After the respiratory flow of the patient is obtained, the equipment can judge whether the equipment is in an inspiration state or an expiration state at present through the increase or decrease trend of the respiratory flow of the patient, and then outputs different target flows in different respiratory states.
The respiratory triggering process of the high flow humidified oxygen therapy system is shown in fig. 10. In the working mode, the respiratory phase triggering process in the high flow rate mode is to collect and record the average flow rate and the average pressure in the last period of time, and calculate the slope of the linear relation. And collecting the current pressure, calculating the due flow corresponding to the current pressure, and comparing the due flow with the current actual flow. If the part of the actual flow rate exceeding the due flow rate exceeds the sensitivity threshold and is verified by the system delay, the air resistance is judged to be small, and the patient is in an inspiratory phase; if the part of the actual flow rate lower than the due flow rate exceeds the sensitivity threshold value and is verified by the system delay, the patient is judged to be in the expiratory phase if the air resistance is increased.
The ventilation mode of the high flow humidified oxygen therapy system is a breath-following output mode. Because the patient breathes, the flow that equipment was gathered through inside flow sensor can be along with the fluctuation about patient's breathing, and under this mode, equipment can judge whether the flow of current collection belongs to expiration state or inspiration state through the breathing trigger algorithm introduced above to control the fan and give different output flow according to the setting value respectively under expiration state and inspiration state and in order to guarantee the travelling comfort when patient breathes, and reducible some gas consumption.
The workflow for the high flow ventilation mode is shown in fig. 11. Before entering a working mode, a target inspiration flow and a target expiration flow need to be set, the system judges whether a patient is in an inspiration phase or an expiration phase currently according to the collected current flow and pressure data, and if the user is in the expiration phase currently, the rotating speed of a motor is adjusted according to the set target expiration flow, so that the output flow of the equipment is equal to the set target expiration flow; if the patient is currently in the inspiration phase, the motor speed is adjusted according to the set target inspiration flow, so that the output flow of the device is equal to the set target inspiration flow.
The working principle of the invention is as follows:
the high-flow humidification oxygen therapy system based on the RT-Thread system is suitable for patients with spontaneous dyspnea, and effective treatment is carried out by providing a certain flow of breathing gas with heating and humidification. The positive pressure air source of the patient is generated by the fan, and the feedback of the provided air source is formed by sensors of flow, temperature, humidity and the like, and the running condition of the oxygen therapy instrument is monitored.
The RT-Thread system-based high-flow humidified oxygen therapy system belongs to II-type and BF-type equipment according to the definition of IEC60601-1 electrical protection types, and risk analysis is performed on possible hazards and corresponding solutions are taken in consideration of electrical safety and single fault criteria.
The hardware design of high flow oxygen therapy apparatus adopts the thinking of modularized design, divide into several core module circuits to the system, wherein include: the heating plate control system comprises a main control unit, a fan drive, a heating plate control module, a front panel module, a sensor module, other components and the like. The performance index of the product meets the requirements of the national standard GB/T9706 on function and performance; the IP protection grade reaches IP65 (injection molding shell); the whole machine meets the medical grade standard.
Software control in the microprocessor is the core of the whole system, and initialization, control, management and other work are carried out on each module. After the system is powered on, each module is initialized, whether the system works normally is judged, and then the system enters various working modes from a standby mode. The main functions of the software include: data acquisition function, data storage function, motor control function, humidifier control function, time delay shutdown function, heating pipeline control function, oxygen proportional valve control function (such as configuration), hot standby, patient management, preheating and the like.
The technical indexes of the invention are as follows:
the product function of the invention meets the function and performance requirements of the national standard GB/T9706. The quality of the whole machine meets the medical secondary standard, the core components adopt the optimization and fool-proof design, and the whole machine has good adaptability to the external environment and electromagnetic compatibility. And the protection level of IP65 is met, and the device can normally work in a complex use environment.
The innovation of the invention is that:
the high-flow humidification oxygen therapy system based on the RT-Thread system builds a high-flow humidification oxygen therapy platform, the flow control and stability performance are obviously improved compared with bare machine control, and the system can be fully applied to the scene of treating patients with respiratory failure.
In the aspect of a key algorithm, aiming at a high-flow humidification oxygen therapy algorithm, a respiration triggering algorithm combined with flow is designed, a high-flow ventilation mode algorithm is established, the breath phase switching of a patient can be effectively judged, so that different airway flows are provided, the treatment effect is achieved, and the requirements of a user on the inspiration capacity and the comfort level are taken into consideration.
In the aspect of system software, the oxygen therapy instrument in the scheme meets the current medical requirements, functions such as fan driving, environmental parameter acquisition, gas humidification and human-computer interaction are effectively combined through a real-time operating system, irreplaceable advantages are achieved in the aspects of functional implementation and environmental adaptability, deep research is conducted on respiratory signal receiving, processing and monitoring technologies and various ventilation modes, traditional wired transmission is eliminated through a remote monitoring system and an Ethernet digital transmission technology, a remote database is built, and respiratory parameters and treatment effects of patients are known in time.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and so forth) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Claims (8)
1. A high flow humidification oxygen therapy system based on RT-Thread system which characterized in that: the heating plate control system comprises a power supply, a main control unit, a fan driving module, a heating plate control module, a front panel module, a sensor unit and a control and alarm module; the output end of the main control unit is connected with the fan through a fan driving module and used for controlling the motor to run and adjusting the rotating speed of the motor in real time according to the acquired data and the breathing state of the user; the main control unit is also connected with the heating plate through a heating plate control module and used for heating the heating plate; the main control unit is also connected with the front panel module and is used for key operation and display; the main control unit is also connected with the sensor unit and is used for acquiring corresponding signals in real time to monitor whether the signals meet the control requirements; and the main control unit is also connected with the control and alarm module and is used for performing sound-light alarm and touch screen control.
2. The high flow humidified oxygen therapy system based on RT-Thread system of claim 1, wherein: the main control module selects an RT1052 microcontroller based on an RT-Thread operating system.
3. The high flow humidified oxygen therapy system based on RT-Thread system of claim 1, wherein: the sensor unit includes: a pressure sensor and a flow sensor for respectively detecting the motor output flow rate and pressure to control the flow of gas provided to the patient; an ultrasonic oxygen concentration sensor for detecting an oxygen concentration; and the temperature and humidity sensor is used for directly collecting the temperature and humidity of the air inlet so as to achieve the optimal control of heating and humidification.
4. The high flow humidified oxygen therapy system based on RT-Thread system of claim 1, wherein: the control and alarm module comprises an LCD touch screen, indicator lamps with various colors and a loudspeaker, and has the functions of display control and audible and visual alarm.
5. The high flow humidified oxygen therapy system based on RT-Thread system of claim 1, wherein: the main control unit is also connected with the data storage module and used for storing data by using the SD card.
6. The high flow humidified oxygen therapy system based on RT-Thread system of claim 1, wherein: the main control unit is also connected with the proportional valve, and the control of the oxygen concentration is achieved through the control of the opening degree of the proportional valve.
7. The RT-Thread system-based high flow humidified oxygen therapy system of claim 1, wherein: the main control unit is also connected with the WIFI module and used for remote communication.
8. The high flow humidified oxygen therapy system based on RT-Thread system of claim 1, wherein: the output end of the power supply module is respectively connected with the main control unit, the fan driving module, the heating plate control module, the front panel module, the sensor unit, the control and alarm module, the proportional valve, the loudspeaker and the data storage module, and supplies power to the main control unit, the fan driving module, the heating plate control module, the front panel module, the sensor unit, the control and alarm module, the proportional valve, the loudspeaker and the data storage module.
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| CN110478582A (en) * | 2019-09-09 | 2019-11-22 | 陈晓阳 | A kind of two-flow intranasal high flow capacity oxygen supply ventilator and its control method |
| CN111821552A (en) * | 2020-08-14 | 2020-10-27 | 华氧医疗科技(大连)有限公司 | Multifunctional respiratory therapy system and method for hospital and family environment |
| CN114028677A (en) * | 2021-12-01 | 2022-02-11 | 广东健奥科技有限公司 | Breathing machine air pressure adjusting and monitoring system and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0819615A (en) * | 1994-07-05 | 1996-01-23 | Sumitomo Bakelite Co Ltd | Medical gaseous oxygen supply device |
| CN107096104A (en) * | 2017-06-08 | 2017-08-29 | 湖南明康中锦医疗科技发展有限公司 | A kind of Oxygen therapy apparatus and its nasal tube road |
| CN110478582A (en) * | 2019-09-09 | 2019-11-22 | 陈晓阳 | A kind of two-flow intranasal high flow capacity oxygen supply ventilator and its control method |
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