Intelligent management method and system for oxygen inhalation

Abstract

The invention relates to the technical field, and discloses an intelligent management method and system for oxygen inhalation, and the method comprises the steps: setting an oxygen flow mixing ratio and a quantitative parameter according to an expected treatment effect, and setting a simulation control for an operator to adjust the oxygen flow mixing ratio in real time; a plurality of sensors are connected to a main controller, data acquisition and state monitoring are carried out through the sensors, and oxygen flow acquisition and air mixing proportion are quantitatively displayed and charged; an air-oxygen proportional electromagnetic valve is arranged, a main controller receives a starting instruction, the air-oxygen proportional electromagnetic valve is controlled according to data collected by a sensor, the flow of mixed gas flowing through the proportional valve and the oxygen proportion are accurately controlled, and remote flow control and program control over oxygen supply are achieved. By means of the method, an intelligent management system for oxygen inhalation is achieved, the whole machine is easy to operate through intelligent control, it is guaranteed that the oxygen flow is adjusted in real time according to the needs of a patient, and the dynamic needs are kept consistent.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to an intelligent management method and system for oxygen inhalation. BACKGROUND

[0002] Oxygen therapy (referred to as "oxygen therapy" for short) is one of the most commonly used rescue or treatment means in hospitals, and 15% of inpatients may use oxygen therapy. The purpose of oxygen therapy is to improve the dynamic blood oxygen value of the patient and keep it in a reasonable range, correct abnormal oxygenation caused by various reasons, and maintain the life activities of the body. The current oxygen inhalation nursing management lacks unified standards, and nurses are the main executors of oxygen therapy. After the doctor gives the medical order to the patient who needs to inhale oxygen, the nurse usually manually adjusts the oxygen flow and performs billing operations. This manual operation is prone to confusion in management. The subjective judgment or operation scale of medical staff and the different cooperation levels of patients can cause a large deviation between the actual oxygen concentration or flow in the patient's inhaled gas and the doctor's expectations, and patients in the ward also self-adjust the oxygen flow from time to time.

[0003] In clinical applications, accurate monitoring of oxygen flow is crucial for the safe use of medical oxygen. At present, the simplest method adopted in China is to connect the float-type oxygen inhaler to the oxygen inhalation tube after reducing the pressure of the high-pressure oxygen source. Due to the limitations of the technical method, the entire oxygen therapy process lacks rigorous monitoring and necessary flow adjustment measures, resulting in a large difference between the inhaled oxygen flow and the transmitted oxygen flow, which affects the effectiveness of oxygen therapy. Light may not achieve satisfactory treatment results, and heavy may cause over-oxygen damage to patients, leading to serious adverse reactions such as oxygen poisoning, increased hypoxia, pulmonary vasoconstriction, and increased oxygen free radical generation.

[0004] The current oxygen inhalation method is not suitable for clinical requirements. Many hospitals' oxygen therapy oxygen supply devices are basically based on oxygen cylinders. The traditional oxygen billing is charged by the hour or by the whole bottle of oxygen, and there are phenomena such as overcharging, missing charging, and undercharging, which cannot be ignored. Oxygen, as a special medical product, is related to human health and safety, and its use should have strict technical standards and specifications. Therefore, there is an urgent need to design an intelligent management system for oxygen inhalation to implement scientific standard management of the problems existing in the oxygen inhalation process. SUMMARY

[0005] The purpose of the present application is to solve the above-mentioned shortcomings in the prior art and provide an intelligent management method and system for oxygen inhalation.

[0006] On the one hand, an intelligent management method for oxygen inhalation is provided, comprising: The oxygen flow mixing ratio and the quantization parameter are set according to the desired treatment effect, and an analog control is set for the operator to adjust the oxygen flow mixing ratio in real time; The main controller accesses a plurality of sensors, collects data and monitors states through the sensors, quantizes and displays the oxygen flow and the air mixing ratio, and charges; The air-oxygen ratio electromagnetic valve is set, the main controller receives a starting instruction, controls the air-oxygen ratio electromagnetic valve according to the data collected by the sensors, accurately controls the flow and oxygen ratio of the mixed gas flowing through the proportional valve, and realizes remote flow control and program control of oxygen supply.

[0007] Further, the sensors include an oxygen flow meter, a breath collection sensor, a pulse sensor, and a humidification bottle liquid level sensor, wherein, The air-oxygen ratio electromagnetic valve is set, the main controller receives a starting instruction, controls the air-oxygen ratio electromagnetic valve according to the data collected by the sensors, accurately controls the flow and oxygen ratio of the mixed gas flowing through the proportional valve, and realizes remote flow control and program control of oxygen supply.

[0008] Further, the voltage signal output by the sensor is input into the P / O interface of the main controller, and a part of the oxygen and air is output through the gap under the action of the gap gravity of the air-oxygen ratio electromagnetic valve.

[0009] Further, a single-chip microcomputer is used as the main controller to realize intelligent control of oxygen inhalation and fine adjustment, the sensors and the air-oxygen ratio electromagnetic valve are connected to the single-chip microcomputer, and the sensors transmit the signals converted from the measured data to the single-chip microcomputer: The single-chip microcomputer receives the electromotive force difference from the oxygen flow meter to determine the oxygen ratio, receives the breath data measured by the breath collection sensor, and then controls the oxygen flow and the duration of the valve core opening of the air-oxygen ratio electromagnetic valve accordingly, to realize closed-loop control with the desired treatment effect as the target.

[0010] Further, the single-chip microcomputer and the sensors are combined and applied to the I / O interface, a threaded rod, a push sleeve, and an adjusting rod are set to adjust the flow: The actions of the air-oxygen ratio electromagnetic valve, the threaded rod, the push sleeve, and the adjusting rod are automatically adjusted according to the data collected by the sensors to accurately adjust the structures and change the flow. The analog control is set to control the flow control structure, the flow control structure includes a return spring, a transmission rod, and a limiting inner sleeve, which work together, and the return spring realizes rapid flow control through the transmission rod according to its elasticity.

[0011] Further, the air-oxygen ratio solenoid valve is controlled in a negative feedback mode, and generates corresponding actions after receiving input voltage signals: The valve is closed when power is off, and is opened when power is on. The coil current size or electromagnetic force size affects the stroke of the plunger and the valve opening, and the valve flow and the control signal have an ideal linear relationship, realizing stepless adjustment of pressure and speed.

[0012] Further, the oxygen flow acquisition and air mixing ratio are quantitatively displayed and charged, and further include: In the control process, the oxygen flow acquisition and air mixing ratio are quantitatively displayed by the display module after being processed by the main controller, and the accurate output flow is accurately calculated by the charging software to realize accurate flow charging.

[0013] Further, the main controller is connected to the user and automatically initialized by the automatic power-on program: When starting, first determine whether a start instruction is received, and if no start instruction is received within a certain time, enter a preparation state, and the main program is suspended; When shutting down, the shutdown instruction is sent by the control of the upper computer and the flow recognition component.

[0014] Further, it also includes wireless WIFI positioning: Wireless WIFI is used for large-scale positioning, and a buzzer and an LED lamp are mounted on the main controller chip to improve accuracy, and when searching for the device, the buzzer starts to alarm and the LED lamp starts to light up as soon as the communication connection is established.

[0015] On the other hand, an intelligent management system for oxygen inhalation is provided, comprising: A workstation is used to set the oxygen flow mixing ratio and quantitative parameters according to the desired treatment effect, and an analog control is set for the operator to adjust the oxygen flow mixing ratio in real time; A collection and monitoring module is connected to a plurality of sensors in the main controller, and data collection and state monitoring are performed through the sensors, and the oxygen flow acquisition and air mixing ratio are quantitatively displayed and charged; A control module sets an air-oxygen ratio solenoid valve, the main controller receives a start instruction, controls the air-oxygen ratio solenoid valve according to the data collected by the sensor, accurately controls the flow and oxygen ratio of the mixed gas flowing through the proportional valve, and realizes remote flow control and program control of oxygen supply.

[0016] Compared with the prior art, the beneficial effects of the present application are: The application adopts the combination operation of the upper computer and the lower computer, and conveniently and effectively solves the accurate control operation of oxygen therapy, so as to adapt to the real-time oxygen therapy demand of patients, wherein the lower computer comprises a single-chip microcomputer and a sensor, is applied in the I / O interface design, fully adopts the input / output port and the interrupt mode, effectively simplifies the complexity of programming and the design of peripheral circuit, saves resources and improves the reliability and stability of the system, and the analog control in the upper computer is controlled by the analog key, so that the size of the air-oxygen flow can be adjusted arbitrarily, and the oxygen therapy effect is refined. The oxygen flow is adjusted in multiple ways by setting the oxygen flow mixing ratio parameter, and only the quantitative parameter is changed by the workstation. The air-oxygen ratio electromagnetic valve is set, the current negative feedback mode is adopted, the oxygen concentration is measured by the oxygen flow meter, and the oxygen flow and the mixed gas ratio are intelligently controlled and adjusted at will. DETAILED DESCRIPTION

[0017] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with embodiments of the present application, and do not constitute a limitation to the present application. In the drawings: Figure 1 It is an intelligent management method flow chart of oxygen inhalation of the present application; Figure 2 It is a structure block diagram of the intelligent management device of oxygen inhalation of the present application; Figure 3 It is a flow control schematic diagram of the air-oxygen ratio electromagnetic valve of the present application; Figure 4 It is a function distribution flow chart of the present application; Figure 5 It is a top view sectional structure schematic diagram of the air-oxygen ratio electromagnetic valve of the present application; Figure 6 It is an application schematic diagram of the negative feedback control of the air-oxygen ratio electromagnetic valve of the present application. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, not all embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0019] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0020] The specific embodiments of the present invention will be described below with reference to the accompanying drawings and examples.

[0021] like Figure 1 As shown in this embodiment, an intelligent management method for oxygen inhalation is provided, the technical solution of which includes: Set the oxygen flow mixing ratio and quantitative parameters according to the desired treatment effect, and set up simulation controls for the operator to adjust the oxygen flow mixing ratio in real time; Several sensors are connected to the main controller to collect data and monitor status, and to quantify and display oxygen flow rate and air mixing ratio for billing. An air-oxygen ratio solenoid valve is installed. The main controller receives the start command and controls the air-oxygen ratio solenoid valve based on the data collected by the sensor. This allows for precise control of the flow rate and oxygen ratio of the mixed gas flowing through the valve, enabling remote flow control and program control of oxygen supply.

[0022] The sensors include an oxygen flow meter, a respiration sensor, a pulse sensor, and a humidification bottle level sensor, wherein... The setting of the air-oxygen ratio solenoid valve is achieved through a combination of pulse sensor input status detection and respiratory acquisition sensor respiratory acquisition. The oxygen flow meter measures the oxygen content in the oxygen delivery tube in real time, converts the oxygen content into a voltage signal, and controls the air-oxygen ratio solenoid valve through a closed loop using the voltage signal.

[0023] Specifically, the medical service system mainly consists of several medical device sensor functional structures, including flow sensors, pulse sensors, and humidification bottle level sensors. These modules are already quite mature, so they can be directly loaded onto the platform of the intelligent oxygen inhalation management system.

[0024] The oxygen concentration measurement method using an oxygen flow meter as a sensor is simple. The sensor feeds back the measured oxygen concentration signal to the air-oxygen proportional solenoid valve of the main controller. Under the action of the PWM control signal, the air-oxygen proportional solenoid valve can precisely adjust the opening ratio of the two channels of the solenoid valve to achieve the required proportional combination of the two gases.

[0025] In the embodiment, the whole system can control the oxygen concentration in the mixed gas in the range of 21% to 100% in a closed loop form, and the output gas flow can be quantitatively set and automatically adjusted by the host computer. The proportional electromagnetic valve is the core component of the proportional control technology, and is limited by the manufacturing material. The hysteresis nonlinearity problem existing in the controlled displacement of the magnetic valve core and the flow operation process has an impact on the control accuracy and stability. At the same time, the open loop system has the characteristics of simple structure and good stability, which directly leads to low control accuracy and poor anti-interference performance.

[0026] In the embodiment, the voltage signal output by the sensor is input into the P / O interface of the main controller, and a part of the oxygen and air is output under the action of the gap gravity of the air-oxygen proportional electromagnetic valve.

[0027] Further, a single-chip microcomputer is used as the main controller to realize intelligent control of oxygen inhalation and fine adjustment. The sensor and the air-oxygen proportional electromagnetic valve are connected to the single-chip microcomputer, and the sensor transmits the signal converted from the measured data to the single-chip microcomputer: The single-chip microcomputer receives the electromotive force difference from the oxygen flowmeter to judge the high and low of the oxygen proportion, and receives the respiratory data measured by the respiratory collection sensor, and then controls the oxygen flow of the air-oxygen proportional electromagnetic valve and the duration of the valve core opening, to realize closed loop control with the desired treatment effect data as the target.

[0028] Specifically, in the embodiment, as shown in Figure 2 An ATmega328 single-chip microcomputer is used to realize intelligent control of oxygen inhalation and fine adjustment.

[0029] Arduino is an open source hardware public platform. The minimum system of the microcontroller selects Arduino Uno, which is the hardware platform of the ATmega328P single-chip microcomputer. Arduino can also develop peripheral devices connected to the PC, which can interact with the software on the PC in runtime. The hardware circuit board of Arduino can be assembled by oneself, and many software of the program development environment can be directly downloaded from the network. Since Arduino has a high degree of modularization, it is sometimes called "electronic building blocks". UNO means "1" in Italian.

[0030] The main core of Arduino UNO is still ATmega328, the biggest difference with previous versions is the use of USB to Serial chip, which brings the benefit of lower prices, more importantly, make Arduino UNO in PC can be displayed as a USB device. Arduino UNO resources Arduino UNO has 14 digital I / O ports (of which 6 can provide PWM output), 6 analog I / O ports, a reset switch, an ICSP download port, and supports USB interface. In our design of this patent, basically can use 10 I / O interface. The whole motherboard can be powered through the USB interface, the whole machine power consumption is very low, the stability is relatively very reliable and can also use a separate power supply.

[0031] Through the USB download program and provide a complete set of software integrated development environment (IDE). Arduino can quickly develop product prototype, convenient and flexible to quickly write single-chip firmware program. It can read a large number of switch and sensor signals, can control a variety of physical devices, plug-in fixed, free combination, flexible and fast to form various circuits, so as to make users simple and convenient to use various sensors and application circuit. A series of ready-to-use products can be used by slightly modifying the code. Another feature is no longer using the traditional FTDI USB serial driver chip, but Atmega16U2 is programmed as a USB device. Not only the price is reduced, more importantly, this makes the Arduino platform in PC can be displayed as a USB device, like a general USB interface device.

[0032] Arduino in the application does not need to understand its internal hardware structure and register settings, as long as you know the role of its port, which is a significant difference from other single-chip control boards.

[0033] Arduino not only has a large number of open source software at the bottom, but also can get a wide range of applications and support from the Arduino website, blog sharing resources. The development method is simple and reliable, in this embodiment, it is suitable for real-time acquisition, analysis and processing of various parameters in the interactive product development process to achieve real-time monitoring of the entire oxygen flow process.

[0034] The single-chip microcomputer and the sensor cooperate with the threaded rod, the advancing sleeve and the adjusting rod to adjust the flow: According to the data collected by the sensor, the actions of the air-oxygen ratio electromagnetic valve, the threaded rod, the advancing sleeve and the adjusting rod are automatically adjusted to accurately adjust each structure to change the flow. The simulation control is arranged to control the flow control structure, which comprises a return spring, a transmission rod and a limiting inner sleeve, and cooperates with each other, and the return spring realizes rapid flow control through the transmission rod according to the elasticity thereof.

[0035] In the embodiment, when the medical staff needs to adjust the oxygen flow in multiple ways, only the quantitative parameter is set through the workstation. The combination of the flow electromagnetic valve, the threaded rod, the pushing sleeve and the adjusting rod can adjust the mixing ratio of oxygen and air. The combination of the movement of the electromagnetic valve and the adjusting rod can make the rotation angle of the structure adjust the extension of the adjusting rod to automatically control the mixing ratio, thereby improving the work efficiency of the medical staff and the medical effect of oxygen therapy.

[0036] In addition, the air-oxygen ratio electromagnetic valve is controlled in a negative feedback mode, and generates corresponding actions after receiving an input voltage signal. The valve is closed when power is off and opened when power is on. The current size or electromagnetic force size of the coil 5 affects the stroke of the plunger and the opening degree of the valve, and the valve flow and the control signal have an ideal linear relationship, realizing stepless adjustment of pressure and speed.

[0037] Specifically, the working principle of the air-oxygen ratio electromagnetic valve is that the proportional electromagnet in the valve receives an input voltage signal to generate corresponding actions, so that the valve core of the working valve generates displacement, and the valve port size changes. A special function electromagnetic valve, the displacement of the valve core can be fed back by multiple signals. It is based on the principle of a common electromagnetic on-off valve: when power is off, the spring directly presses the iron core on the valve seat to close the valve. When the coil is powered on, the electromagnetic force generated by the coil overcomes the spring force to lift the iron core, thereby opening the valve. The mechanical structure of the air-oxygen ratio electromagnetic valve is shown in Figure 5 .

[0038] The embodiment adopts a direct-acting proportional electromagnetic valve, and the flow direction is downward to the valve seat. The medium flows from below the valve seat, and the direction of the acting force is the same as the electromagnetic force and opposite to the spring force. Therefore, it is necessary to set the maximum and minimum flow values corresponding to the working range (coil current) in the working state. The proportional electromagnetic valve of the fluid is closed when power is off (NC, normally closed type).

[0039] The air-oxygen ratio electromagnetic valve has the following characteristics: 1) The pressure and speed can be infinitely adjusted, avoiding the impact phenomenon of the on-off air valve during reversing; 2) The remote flow control and program control can be accurately realized; 3) Compared with the intermittent control, the system is simplified and the components are greatly reduced; 4) Compared with the hydraulic proportional valve, the volume is small, the weight is light, the structure is simple, the cost is low, but the response speed is much slower than the hydraulic system, and the load change is also more sensitive; 5) The power is small, the heat is less, and the noise is low during use; 6) There is no fire, no pollution to the environment, and the influence of temperature change is small.

[0040] The air-oxygen proportional electromagnetic valve generates corresponding action by the input voltage signal during operation, so that the valve core of the working valve is displaced, the valve port size is changed, and the proportional pressure or flow output element is completed. Not only accurately provides accurate control for air-oxygen ratio, but also provides scientific basis for accurate flow billing.

[0041] In order to ensure the effect of medical oxygen, the proportional valve can be effectively used, and the proportion of pure oxygen in oxygen therapy must be accurately controlled. The proportional valve is usually installed between the three-way valve and the single-chip microcomputer controller. The oxygen sensor has a characteristic that the output voltage changes when the oxygen concentration is different. This characteristic is used to detect the oxygen concentration in the oxygen delivery pipe and feedback to the single-chip microcomputer to control the action of the proportional valve by PWM. When the patient feels that the oxygen concentration is not enough during oxygen inhalation, he will adjust this state by accelerating breathing. The breathing acquisition sensor timely transmits this data to the single-chip microcomputer, and the pure oxygen output is appropriately increased through the proportional electromagnetic valve.

[0042] The single-chip microcomputer judges whether the oxygen ratio is low or high according to the difference of electromotive force from the oxygen sensor, and controls the opening duration of the proportional electromagnetic valve core accordingly. The function of the sensor is to measure the information in the oxygen delivery pipe at any time, i.e. the oxygen content, and convert the oxygen content into a voltage signal transmitted to the single-chip microcomputer, so that the proportional electromagnetic valve can realize closed-loop control with the target of accurate data required by the patient's oxygen therapy, and ensure the treatment effect.

[0043] The air-oxygen proportional electromagnetic valve adopts current negative feedback mode, as shown in Figure 6 , which can effectively improve the control accuracy and anti-interference ability of the proportional electromagnetic valve. However, it significantly increases the complexity of system control. The application of flow sensor real-time acquisition and pulse sensor combination realizes composite control, and the mixed gas flow has achieved obvious effect in application. The problems of oxygen concentration and flow in oxygen inhalation therapy are solved, the blindness in medical treatment is reduced, the medical quality is improved, and it is of great significance to the medical staff and the society. The use of single-chip microcomputer control not only improves the efficiency and reduces the waste of resources.

[0044] In the embodiment, as shown in Figure 3As shown, the working voltage of the proportional valve is set to +12V through testing, the working temperature is set to 0-50℃, the driving signal of the proportional valve is a PWM voltage signal with the same amplitude and different frequencies, the duty cycle of the PWM is controlled by the output signal of the D / A digital analog converter (DAC) on the main control single-chip microcomputer, the corresponding equivalent DC voltage is 3.87-12.00 V, and the step is 0.1152 V. The proportional valve is controlled by different frequency PWM signals.

[0045] More preferably, the setting of the proportional valve is controlled by the pulse input state monitoring and diagnosis system of the ventilator, and the opening degree of the valve port is further adjusted through negative feedback to realize precise control of the flow rate of mixed air and oxygen, and the running state of the proportional valve can be monitored and diagnosed.

[0046] Since the output current provided by the I / O port of the single-chip microcomputer is usually only a few mA, and the rated working current of the proportional electromagnetic valve needs dozens of mA, a driving isolation circuit needs to be added between the single-chip microcomputer and the proportional electromagnetic valve, and the system selects ULN2003 chip.

[0047] In the oxygen inhalation intelligent management method, the oxygen flow acquisition and the air mixing ratio are further quantitatively displayed and charged, which comprises the following steps: In the control process, the oxygen flow acquisition and the air mixing ratio are quantitatively displayed by the display module after being processed by the main controller, and the accurate flow rate is calculated by the charging software to realize precise flow rate charging.

[0048] Specifically, in the embodiment, as shown in Figure 2 OLED is used for quantitative display of oxygen flow acquisition and air mixing ratio, and the data collected by the output flow sensor are sent to the OLED display module for quantitative display after being compared and processed by the single-chip microcomputer. In the control circuit, VGG12864L-02(3V) is selected, which is a 128-column X64-row dot matrix OLED monochrome, character and graphic display module. This module has the characteristics of built-in 128X64Bit display data RAM, integrated SSD1305 OLED driver, simple interface circuit, built-in driving voltage, high brightness, high contrast, wide viewing angle, fast response speed, wide temperature range and support for serial / parallel interface, etc.

[0049] In the software needs to provide logical power, corresponding to send out display DATA (D0-D7) and generate driving instruction signal D / C#, R / W#, E / RD#, can be according to the control signal sequence point OLED screen sent by single-chip microcomputer P / O. At the same time, the single-chip microcomputer only communicates with the SSD1305, so only needs to understand the timing characteristics and instruction system of the SSD1305, and uses the software system downloaded from the platform to stably use the SSD1305 module.

[0050] At the same time, through the open source database of the Arduino platform, the corresponding instruction is input, and the library function U8glib can be directly called according to the needs, which is a graphic liquid crystal display library. Through the open source material provided by the platform, the use of U8glib library, the establishment of U8glib quantitative data, the program structure of U8glib and the drawing translation data function of U8glib library are seriously called. The program of the OLED application liquid crystal display module is written. The quantitative application and data display debugging of the display module are carried out to achieve the display effect consistent with the accurate flow.

[0051] Further, the method further comprises using wireless WIFI positioning: Using wireless WIFI for large-scale positioning, in order to improve the accuracy, a buzzer and an LED lamp are carried on the main controller chip, and when searching for the device, the buzzer starts to alarm and the LED lamp starts to light up as soon as the communication connection is established.

[0052] In the embodiment, as shown in Figure 2 The ESP8266 is used as a WIFI chip, which has high integration, low power consumption, can be independently operated or carried on a microprocessor, supports multiple modes, is efficient and convenient, and is selected as a Wi-Fi hotspot. A softAP module and multiple station modules are connected through WIFI networking to establish a connection relationship, and a mobile phone is also one of the modules. A hotspot is established by using the module to establish a connection with the mobile phone, and the data model of the WIFI positioning on the mobile phone is analyzed and operated to realize indoor close-range positioning.

[0053] Because the WiFi positioning can realize complex large-scale positioning, but the accuracy can only reach about 2 meters, the chip and the buzzer can be carried, and the alarm starts as soon as the signal is searched and the communication connection is established, which can be more convenient for object recovery. In the case of darkness, the light can be set to flash, which can greatly improve the practicality of the design.

[0054] All modules of the method are built based on ESP8266, and each station module has its own function, while the softAP module collects data returned by other modules, and uses the APP of the smart phone to access the softAP module to query the state. The function of the ESP8266 chip.

[0055] The webpage of the self-contained hotspot can be logged in through the ESP8266 chip for configuration, thereby establishing a connection to transmit data between the single-chip microcomputer and the upper computer, and achieving the communication purpose.

[0056] The WiFi chip ESP8266 is produced by the domestic company Loxxin, which is designed for mobile devices, wearable electronic products and Internet of Things applications, and realizes ultra-low power consumption through multiple proprietary technologies. It integrates a 32-bit Tensilica processor, a standard digital peripheral interface, an antenna switch, a radio frequency balun, a power amplifier, a low-noise amplifier, a filter and a power management module, etc., and only needs a small amount of peripheral circuit, which can reduce the PCB space. There is no other expansion circuit. With the rapid popularization of 5G signals, the performance of WIFI is continuously enhanced, and wireless positioning technology will become an effective technology for precise implementation of interlinking, and will also bring more convenient and efficient services for program control.

[0057] Further, the main controller is connected to the user and automatically initialized after power-on program: When starting, first determine whether a start instruction is received, and if no start instruction is received within a certain time, enter the ready state, and the main program is suspended; When shutting down, the control and flow recognition components of the upper computer send a shutdown instruction.

[0058] In the embodiment, the system is connected to the patient and automatically initialized after power-on program, and the main controller first determines whether an oxygen therapy start instruction is received, and if no start instruction is received within 30 seconds, enters the Ready state, and the main program is suspended. The shutdown instruction is given by the key or flow recognition component of the server. Two kinds of shutdown instructions are designed mainly to prevent false actions caused by environmental noise.

[0059] The working process of the embodiment is shown in Figure 4 .

[0060] The embodiment provides an intelligent management system for oxygen inhalation, comprising: A workstation is used for setting an oxygen flow mixing ratio and a quantization parameter according to an expected treatment effect, and simultaneously setting an analog control for an operator to adjust the oxygen flow mixing ratio in real time. The acquisition monitoring module is connected with a plurality of sensors, and data acquisition and state monitoring are performed through the sensors, and the oxygen flow acquisition and air mixing ratio are quantitatively displayed and charged; The control module is provided with an air-oxygen ratio electromagnetic valve, and the main controller receives a starting instruction and controls the air-oxygen ratio electromagnetic valve according to the data collected by the sensors, so as to accurately control the flow and oxygen ratio of the mixed gas flowing through the proportional valve, and realize remote flow control and program control of oxygen supply.

[0061] Obviously, various modifications and changes can be made to the present application by those skilled in the art without departing from the spirit and scope of the present application. Thus, if these modifications and changes belong within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and changes.

[0062] Finally, it should be noted that: the above is only the preferred embodiment of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, and those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for intelligent management of oxygen inhalation, characterized in that, The application relates to an oxygen and air mixing device. The oxygen flow mixing ratio and the quantization parameter are set according to the desired treatment effect, and an analog control is set for an operator to adjust the oxygen flow mixing ratio in real time. The main controller accesses a plurality of sensors, data acquisition and state monitoring are carried out through the sensors, the oxygen flow acquisition and the air mixing ratio are quantitatively displayed and charged. An air-oxygen ratio electromagnetic valve is arranged, the main controller receives a starting instruction, the air-oxygen ratio electromagnetic valve is controlled according to the data collected by the sensors, the flow of the mixed gas flowing through the proportional valve and the oxygen ratio are accurately controlled, and remote flow control and program control of oxygen supply are realized.

2. The intelligent management of oxygen inhalation method according to claim 1, characterized in that, The sensors include an oxygen flow meter, a breath acquisition sensor, a pulse sensor and a humidification bottle liquid level sensor. The setting of the air-oxygen ratio electromagnetic valve is controlled by the input state detection of the pulse sensor and the breath acquisition of the breath acquisition sensor, the oxygen flow meter determines the oxygen content in the oxygen supply pipe in real time, converts the oxygen content into a voltage signal, and controls the air-oxygen ratio electromagnetic valve through the closed-loop control of the voltage signal.

3. The intelligent management of oxygen inhalation method according to claim 2, characterized in that, The voltage signal output by the sensors is input into the P / O interface of the main controller, and a part of the oxygen and air passes through the gap of the valve body under the action of the gap gravity of the air-oxygen ratio electromagnetic valve.

4. The intelligent management of oxygen inhalation method according to claim 2, wherein, A single-chip microcomputer is used as the main controller to realize intelligent control of oxygen inhalation and fine adjustment, the sensors and the air-oxygen ratio electromagnetic valve are connected to the single-chip microcomputer, and the sensors transmit the measured data to the single-chip microcomputer in the form of signals: The single-chip microcomputer receives the electromotive force difference from the oxygen flow meter to judge the high and low of the oxygen ratio, receives the breath data measured by the breath acquisition sensor, and then controls the oxygen flow of the air-oxygen ratio electromagnetic valve and the duration of the valve core opening, so that the closed-loop control of the desired treatment effect data is realized.

5. The intelligent management of oxygen inhalation method according to claim 4, characterized in that, The single-chip microcomputer and the sensors are applied to the I / O interface, and are matched with a threaded rod, a pushing sleeve and an adjusting rod to adjust the flow: The actions of the air-oxygen ratio electromagnetic valve, the threaded rod, the pushing sleeve and the adjusting rod are automatically adjusted according to the data collected by the sensors, the structures are accurately adjusted, and the flow is changed; The analog control is arranged to control the flow control structure, the flow control structure includes a return spring, a transmission rod and a limiting inner sleeve, and the return spring realizes rapid flow control through the transmission rod according to the elasticity of the return spring.

6. The intelligent management of oxygen inhalation method according to claim 4, wherein, The air-oxygen ratio electromagnetic valve is controlled in a negative feedback mode, and corresponding actions are generated after the input voltage signal is received: The valve is closed when power is off, and the valve is opened when power is on; The size of the coil current or the electromagnetic force influences the stroke of the plunger and the opening degree of the valve, and the flow of the valve and the control signal have an ideal linear relationship, so that the pressure and the speed are infinitely adjusted.

7. The intelligent management of oxygen inhalation method according to claim 1, wherein, The quantization and charging display of the oxygen flow acquisition and the air mixing ratio further include: During the control process, the oxygen flow acquisition and the air mixing ratio are sent to a display module for quantitative display after the data are processed by the main controller, and the accurately output flow is calculated by charging software to realize accurate flow charging.

8. The intelligent management of oxygen inhalation method according to claim 1, wherein, The main controller is connected to the user and automatically initialized by the automatic power-on program: When starting, first determine whether the start instruction is received, if no start instruction is received within a certain time, the preparation state is entered, and the main program is suspended; When shutting down, the control of the upper computer and the flow identification component issue a shutdown instruction.

9. The intelligent management of oxygen inhalation method according to claim 2, wherein, It also includes wireless WIFI positioning: Using wireless WIFI for large-scale positioning, in order to improve the accuracy, a buzzer and LED lamp are mounted on the main controller chip, when searching for the device, once the communication is connected, the alarm and LED lamp are started.

10. An intelligent management system for oxygen inhalation, characterized in that, It includes: Workstation, for setting oxygen flow mixing ratio and quantization parameters according to desired treatment effect, and setting analog control for operator to adjust oxygen flow mixing ratio in real time; Acquisition and monitoring module, a plurality of sensors are connected to the main controller, data acquisition and state monitoring are performed through the sensors, oxygen flow acquisition and air mixing ratio are quantitatively displayed and charged; Control module, setting air-oxygen ratio electromagnetic valve, the main controller receives start instruction, controls the air-oxygen ratio electromagnetic valve according to the data collected by the sensor, accurately controls the flow and oxygen ratio of the mixed gas flowing through the proportional valve, realizes remote flow control and program control of oxygen supply.

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