A portable transfer oxygen source endurance early warning device and method based on ventilator parameter input

Abstract

This invention discloses a portable transport oxygen source endurance warning device and method based on ventilator parameter input, belonging to the field of transport ventilator technology. It includes a base and a controller. A column is mounted on the top surface of the base, supporting the ventilator. The controller contains a microprocessor with built-in basic calculation logic, dynamic calibration logic, and a graded alarm mechanism. An alarm module is also mounted on the front of the controller. A display module is embedded on the front of the ventilator, which has an inlet and an outlet. A fixing sleeve is mounted on the top surface of the base, housing an oxygen cylinder. A pressure sensor is mounted on the top of the oxygen cylinder, and a flow sensor is connected to the outlet of the oxygen cylinder. A pressure reducing valve is connected to the outlet of the oxygen cylinder via a pipe. The outlet is connected to the ventilator mask via a pipe. Four casters are mounted on the bottom surface of the base.

Description

Technical Field

[0001] This invention relates to the field of transport ventilator technology, specifically to a portable transport oxygen source endurance warning device and method based on ventilator parameter input. Background Technology

[0002] During emergency intra-hospital or inter-hospital transport, critically ill patients often rely on portable oxygen cylinders and transport ventilators to maintain vital signs. The continuity and stability of oxygen supply are directly related to the patient's life safety. Among these requirements, accurate control of oxygen reserves and end-of-life warnings are core demands in the transport process. However, existing technologies still have many unresolved shortcomings, which seriously restrict the safety and ease of operation of transport.

[0003] First, estimating oxygen supply duration is extremely difficult and its accuracy cannot be guaranteed. While the amount of gas remaining in an oxygen cylinder is positively correlated with its pressure, the actual usage time is not solely determined by pressure but also by real-time oxygen flow rate. For patients on ventilators, oxygen flow rate is influenced by multiple factors: tidal volume determines the amount of gas inhaled in a single breath, respiratory rate affects the number of breaths per unit time, and inhaled oxygen concentration determines the proportion of oxygen in the gas mixture. Furthermore, variations in parameters such as positive end-expiratory pressure, I:E ratio, and delivery waveform make the calculation logic for oxygen flow rate extremely complex. Manual mental calculation or experience-based estimation cannot accurately control this, often resulting in significant discrepancies between actual and estimated durations, thus complicating transport planning.

[0004] Secondly, the lack of an effective tiered early warning mechanism poses significant safety risks. Currently, in clinical practice, medical staff can only detect insufficient oxygen by continuously observing changes in the pressure gauge or waiting for the ventilator's low-pressure alarm. However, the environment during transport is complex, and subtle changes in the pressure gauge are easily overlooked. Furthermore, when the ventilator's low-pressure alarm is triggered, the remaining oxygen in the cylinder is often minimal, only lasting for a very short time. Medical staff cannot easily replace the backup gas source or adjust the transport plan in an emergency, greatly increasing the risk of fatal hypoxia in patients. Simultaneously, the noisy environment during transport requires medical staff to concentrate on monitoring the patient's vital signs, further increasing blind spots that may overlook changes in remaining oxygen levels and exacerbating safety hazards. Summary of the Invention

[0005] The purpose of this invention is to provide a portable transport oxygen source endurance warning device and method based on ventilator parameter input, so as to solve the problems mentioned in the background art.

[0006] In view of the above problems, the technical solution proposed by the present invention is as follows:

[0007] A portable transport oxygen source endurance warning device based on ventilator parameter input includes a base and a controller. A column is mounted on the top of the base, supporting the ventilator. The controller contains a microprocessor with built-in basic calculation logic, dynamic calibration logic, and a tiered alarm mechanism. An alarm module is mounted on the front of the controller. A display module is embedded on the front of the ventilator, which has an inlet and an outlet. A fixing sleeve is mounted on the top of the base, housing an oxygen cylinder. A pressure sensor is mounted on the top of the oxygen cylinder, and a flow sensor is connected to the outlet of the cylinder. A pressure reducing valve is connected to the free end of the flow sensor, which is connected to the inlet via a pipe. The outlet is connected to a ventilator mask via a pipe. Four casters are mounted on the bottom of the base, enabling convenient movement of the device in emergency intra-hospital or inter-hospital transport scenarios, meeting transport requirements. The system addresses the need for mobility during transport; the support column provides stable support for the ventilator, ensuring its stability during transport and preventing vibration from affecting the operation of internal components such as the microprocessor; the fixing sleeve securely holds the oxygen cylinder to the base, preventing displacement or collision during transport and ensuring safe use; the pressure sensor collects real-time pressure data from the oxygen cylinder, and the flow sensor collects oxygen output flow data. These sensors, working with the ventilator's internal microprocessor, provide accurate data support for calculations related to oxygen supply continuity; the pressure reducing valve adjusts the pressure of the oxygen cylinder output, ensuring stable oxygen pressure entering the ventilator through the inlet and then being delivered to the ventilator mask through the outlet, guaranteeing appropriate oxygen pressure for the patient's breathing; the display module visually presents relevant monitoring data and calculation results to medical staff, while the alarm module promptly issues warnings when oxygen supply issues arise. Together with the microprocessor, these components allow medical staff to monitor oxygen usage in real time and prepare accordingly.

[0008] Furthermore, the display module is a touch screen, and the alarm module includes a tri-color LED light and a buzzer. The microprocessor is communicatively connected to the ventilator, the touch screen, the tri-color LED light, the buzzer, the pressure sensor, and the flow sensor. The touch screen is electrically connected to the microprocessor, displaying monitoring data and calculation results, receiving parameters input by medical staff and selected modes, realizing bidirectional data transmission, and improving the ease of operation of the device. The tri-color LED light and the buzzer are electrically connected to the microprocessor. The microprocessor controls the tri-color LED light to emit different colors of light and controls the buzzer to emit different frequencies of sound according to the battery status. Through visual and auditory cues, medical staff can detect abnormal oxygen supply in the transport environment and avoid missing warning information.

[0009] Furthermore, the formula for the basic computational logic is as follows:

[0010]

[0011]

[0012]

[0013] in, The average oxygen consumption flow rate, Tidal volume, Respiratory rate, This is the flow correction factor. Based on the airflow, The total amount of oxygen that can be released. This represents the current absolute pressure inside the bottle. Let be the volume constant of the oxygen cylinder. To calculate the remaining usage time, the microprocessor's built-in basic calculation logic formulas work in conjunction with parameters such as tidal volume, respiratory rate, and current absolute pressure inside the cylinder. A flow correction coefficient corrects the flow rate data. The oxygen cylinder volume constant is combined with the current absolute pressure inside the cylinder to calculate the total amount of oxygen that can be released. The total amount of oxygen that can be released is combined with the average oxygen consumption flow rate to calculate the remaining usage time. The collaboration of multiple formulas enables the microprocessor to integrate multi-dimensional parameter calculations and output oxygen supply data, providing data support for medical staff and reducing errors from manual estimation.

[0014] Furthermore, the dynamic calibration logic monitors the deviation between the actual pressure drop rate and the theoretical pressure drop rate, and automatically corrects the remaining time through the microprocessor. The dynamic calibration logic works in conjunction with the microprocessor to monitor the deviation between the actual pressure drop rate and the theoretical pressure drop rate. The microprocessor automatically corrects the remaining usage time based on the deviation, avoiding discrepancies between theoretical calculations and actual conditions caused by factors such as changes in the patient's respiratory status and minor leaks in the tubing. This improves the accuracy of the remaining usage time and provides a basis for decision-making by medical staff.

[0015] Furthermore, the microprocessor also incorporates a temperature correction factor. When the ambient temperature is <10℃, When 35℃ ≥ ambient temperature ≥ 10℃, When the ambient temperature is >35℃, The microprocessor's built-in temperature correction coefficient works in conjunction with the basic calculation logic to select the corresponding correction coefficient based on the ambient temperature, correcting the calculation results of average oxygen consumption flow, total amount of oxygen that can be released, and remaining usage time. This avoids deviations in calculation results caused by changes in ambient temperature affecting gas properties, enabling the device to output accurate endurance data under different temperature environments and adapt to various transportation scenarios with different temperature conditions.

[0016] Furthermore, the ventilator also has a lithium battery inside, and a power interface is embedded on the outside of the ventilator. The lithium battery inside the ventilator works with the external power interface. When an external power source is connected, the power interface supplies power to the device and charges the lithium battery at the same time. When there is no external power source, the lithium battery supplies power to the device, ensuring that the device continues to work during transport and ensuring the operation of oxygen supply monitoring and early warning functions.

[0017] Furthermore, the aforementioned tiered alarm mechanism is based on The numerical values ​​trigger the operation of the tri-color LED lights and the buzzer, specifically:

[0018] Normal state: The tri-color LED light is green, and the buzzer is silent;

[0019] Level 1 warning: The tri-color LED lights emit yellow light, and the buzzer outputs a low-frequency sound;

[0020] Level 2 Alarm: The tri-color LED light illuminates in red, and the buzzer outputs a high-frequency sound. The graded alarm mechanism works in conjunction with the tri-color LED light and buzzer to classify the oxygen supply status into three levels: normal, Level 1 warning, and Level 2 alarm, based on the remaining usage time. Different levels correspond to different visual and auditory prompts, allowing medical staff to judge the urgency of the oxygen supply shortage. The normal status informs medical staff that oxygen is sufficient. The Level 1 warning prompts medical staff to prepare a backup gas source or adjust the transport plan. The Level 2 alarm alerts medical staff to take immediate emergency measures to reduce the risk of patient hypoxia.

[0021] A method for providing early warning of the continued operation of a portable transport oxygen source based on ventilator parameter input includes the following steps:

[0022] S1: Fix the oxygen cylinder in the fixing sleeve of the base, connect the oxygen cylinder, flow sensor, pressure reducing valve and ventilator inlet in sequence through the pipe, connect the outlet to the ventilator mask, turn on the power of the device, and connect the controller to the ventilator, pressure sensor and flow sensor through the communication interface.

[0023] S2: Select the oxygen cylinder specification via the touch screen, select the oxygen supply mode according to the usage scenario, and enter the parameters for the corresponding mode;

[0024] S3: The microprocessor acquires the absolute pressure inside the bottle in real time via a pressure sensor, and combines this with the flow data collected by the flow sensor and input parameters to calculate the total amount of oxygen that can be released through basic computational logic. Average oxygen consumption flow rate and remaining usage time ;

[0025] S4: The touchscreen displays real-time monitoring data, and the microprocessor... Numerical values ​​and dynamic calibration results trigger alarms of the corresponding levels;

[0026] S5: After the gas source replacement or transfer is completed, turn off the power to the device and disconnect all pipeline connections.

[0027] Compared with existing technologies, the beneficial effects of this invention are as follows: This portable transport oxygen source endurance warning device and method based on ventilator parameter input, in terms of endurance calculation, uses pressure and flow sensors to collect pressure and flow data, a touchscreen display to input key parameters, and a microprocessor combined with basic calculation logic to integrate multi-dimensional parameter calculations such as tidal volume and respiratory rate. Dynamic calibration logic monitors the deviation between the actual and theoretical pressure drop rate and automatically corrects the remaining time. A temperature correction coefficient adjusts the calculation results according to the ambient temperature. The cooperation of multiple components and multiple logics improves the accuracy of calculating average oxygen consumption flow, total release oxygen, and remaining usage time, solving the problems of large deviations in manual estimation and single-parameter calculations. In terms of warning, the microprocessor combines the corrected remaining usage time with a tiered alarm mechanism, controlling a three-color LED light and a buzzer to provide tiered alerts through different colored lights and frequency sounds. Medical staff can perceive the oxygen supply status visually and audibly in complex transport environments, allowing them to prepare backup gas sources or adjust transport plans in advance. This avoids the situation in existing technologies where low-pressure alarms trigger insufficient remaining oxygen and medical staff lack sufficient time to respond, thus reducing the risk of patient hypoxia. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural schematic diagram of the portable transport oxygen source endurance warning device based on ventilator parameter input disclosed in an embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of the system structure of the portable transport oxygen source endurance warning device based on ventilator parameter input disclosed in an embodiment of the present invention.

[0030] In the diagram: 1. Base; 2. Casters; 3. Column; 4. Ventilator; 5. Touch screen; 6. Air inlet; 7. Air outlet; 8. Tri-color LED; 9. Buzzer; 10. Fixing sleeve; 11. Pressure sensor; 12. Flow sensor; 13. Pressure reducing valve; 14. Oxygen cylinder; 15. Controller. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figures 1-2 This invention provides a technical solution: a portable oxygen source sustainment warning device based on ventilator parameter input, comprising a base 1 and a controller 15. A column 3 is mounted on the top surface of the base 1, supporting a ventilator 4. The controller 15 contains a microprocessor with built-in basic calculation logic, dynamic calibration logic, and a graded alarm mechanism. An alarm module is also mounted on the front of the controller 15. A display module is embedded on the front of the ventilator 4, which has an inlet port 6 and an outlet port 7. A fixing sleeve 10 is also mounted on the top surface of the base 1, housing an oxygen cylinder 14. A pressure sensor 11 is mounted on the top of the oxygen cylinder 14, and a flow sensor 12 is connected to the output end of the oxygen cylinder 14. A pressure reducing valve 13 is connected to the free end of the flow sensor 12, which is connected to the free end of the pressure reducing valve 13 via a pipe to the inlet port 6. The outlet port 7 is connected to a ventilator mask via a pipe. Four casters 2 are mounted on the bottom surface of the base 1. The oxygen cylinder 14 is first placed into the fixing sleeve of the base 1. Inside the sleeve 10, the oxygen cylinder 14 is fixed in place by the fixing sleeve 10. Then, the oxygen cylinder 14, the flow sensor 12, the pressure reducing valve 13 and the air inlet 6 of the ventilator 4 are connected in sequence by pipes. Then, the air outlet 7 is connected to the ventilator mask to complete the tubing assembly. The column 3 is installed between the base 1 and the ventilator 4 to support the ventilator 4 and keep the ventilator 4 in a stable installation position. When the device is in use, the oxygen in the oxygen cylinder 14 flows out through the output end, first passing through the flow sensor 12. The flow sensor 12 detects the oxygen flow and transmits the data to the microprocessor. Then the oxygen flows through the pressure reducing valve 13. The pressure reducing valve 13 adjusts the oxygen pressure. The adjusted oxygen enters the ventilator 4 through the air inlet 6 and then flows out from the air outlet 7 to the ventilator mask for the patient to breathe. The universal wheels 2 on the bottom of the base 1 rotate to drive the whole device to move and meet the needs of transportation. The microprocessor receives the data transmitted by the pressure sensor 11 and the flow sensor 12, performs calculations and judgments according to the built-in logic and mechanism, and controls the operation of the display module and the alarm module.

[0033] In one embodiment of the present invention, the display module is a touch screen 5, and the alarm module includes a tri-color LED light 8 and a buzzer 9. The microprocessor is communicatively connected to the ventilator 4, the touch screen 5, the tri-color LED light 8, the buzzer 9, the pressure sensor 11, and the flow sensor 12. First, the total amount of oxygen that can be released, the average oxygen consumption flow rate, and the remaining usage time are transmitted to the touch screen 5, which displays the data for medical personnel to view. Medical personnel can issue commands by touching the operation area of ​​the touch screen 5, and the touch screen 5 transmits the commands to the microprocessor, which receives and executes them. The microprocessor is electrically connected to the pressure sensor 11 and the flow sensor 12, continuously receiving pressure and flow data. After calculating and judging the oxygen supply status, it sends control signals to the tri-color LED light 8 and the buzzer 9. Upon receiving the signals, the tri-color LED light 8 emits a corresponding color light, and the buzzer 9 emits a corresponding frequency sound, achieving dual alarm prompts.

[0034] As an embodiment of the present invention, the formula for the basic computational logic is further as follows:

[0035]

[0036]

[0037]

[0038] in, The average oxygen consumption flow rate, Tidal volume, Respiratory rate, This is the flow correction factor. Based on the airflow, The total amount of oxygen that can be released. This represents the current absolute pressure inside the bottle. Let be the volume constant of the oxygen cylinder. To determine the remaining usage time, firstly, medical staff input parameters such as tidal volume, respiratory rate, basic airflow, and oxygen cylinder volume constant via the touchscreen display 5. Pressure sensor 11 collects the current absolute pressure inside the oxygen cylinder 14 and transmits it to the microprocessor. Next, the microprocessor calls the basic calculation logic formula, combining tidal volume, respiratory rate, flow correction coefficient, and basic airflow to calculate the average oxygen consumption flow rate. Then, the current absolute pressure inside the cylinder and the oxygen cylinder volume constant are substituted into the formula to calculate the total amount of oxygen that can be released. Finally, the total amount of oxygen that can be released is divided by the average oxygen consumption flow rate to calculate the remaining usage time, completing the basic calculation and providing data for early warning and display.

[0039] As an embodiment of the present invention, the dynamic calibration logic further monitors the deviation between the actual pressure drop rate and the theoretical pressure drop rate, and automatically corrects the remaining time through a microprocessor. First, the pressure sensor 11 continuously collects pressure data inside the oxygen cylinder 14 and transmits it to the microprocessor in real time. The microprocessor calculates the theoretical pressure drop rate based on the relevant parameters of the basic calculation logic and the oxygen usage theoretical model. At the same time, the microprocessor analyzes the continuous pressure data transmitted by the pressure sensor 11 and calculates the actual pressure drop rate. Then, the microprocessor compares the actual pressure drop rate with the theoretical pressure drop rate to determine the magnitude of the deviation. Finally, the microprocessor adjusts the remaining usage time calculation result according to the deviation based on the preset calibration rules, dynamically calibrating the remaining time to make the remaining usage time consistent with the actual usage situation.

[0040] As an embodiment of the present invention, the microprocessor further incorporates a temperature correction coefficient. When the ambient temperature is <10℃, When 35℃ ≥ ambient temperature ≥ 10℃, When the ambient temperature is >35℃, First, the microprocessor's built-in temperature detection component senses the ambient temperature in real time. Then, the microprocessor compares the detected ambient temperature with the preset temperature range to determine the corresponding temperature correction coefficient. Next, when the basic calculation logic calculates the average oxygen consumption flow, the total amount of oxygen that can be released, and the remaining usage time, the microprocessor incorporates the corresponding temperature correction coefficient into the calculation formula to correct the calculation results. Finally, the temperature-corrected calculation results are output to ensure that the battery life data reflects the actual situation under different ambient temperatures.

[0041] As an embodiment of the present invention, the ventilator 4 further includes a lithium battery inside and a power interface embedded outside. When the device is in an environment with external power, the external power adapter is plugged into the power interface of the ventilator 4, and the external power supply provides power to the internal microprocessor, touch display screen 5, and other components of the ventilator 4 through the power interface, while charging the lithium battery, which stores electrical energy. When the device is in a transport process without external power, the lithium battery starts the power supply mode, supplying power to the various electrical components of the ventilator 4 through the internal circuit, enabling the microprocessor to continuously collect data, calculate, and judge, the touch display screen 5 to display normally, the alarm module to work normally, and ensuring uninterrupted operation of the device.

[0042] As an embodiment of the present invention, a graded alarm mechanism is further used as a basis. The numerical values ​​trigger the operation of the tri-color LED 8 and the buzzer 9, specifically:

[0043] Normal state >30 minutes: The tri-color LED 8 is in a green light state, and the buzzer 9 is silent;

[0044] Level 1 warning ≤ 10 minutes ≤30 minutes: The tri-color LED 8 illuminates in yellow, and the buzzer 9 outputs a low-frequency sound;

[0045] Level 2 alarm ≤10 minutes: The tri-color LED 8 illuminates red, and the buzzer 9 outputs a high-frequency sound. First, the microprocessor compares the calculated and corrected remaining usage time with the preset time threshold of the graded alarm mechanism. When the remaining usage time is >30 minutes, the microprocessor determines it to be in a normal state, sends a green light signal to the tri-color LED 8, and sends a silent signal to the buzzer 9. The tri-color LED 8 illuminates green, and the buzzer 9 does not work. When 10 minutes ≤ remaining usage time ≤ 30 minutes, the microprocessor determines it to be in a first-level warning state, sends a yellow light signal to the tri-color LED 8, and sends a low-frequency sound signal to the buzzer 9. The tri-color LED 8 illuminates yellow, and the buzzer 9 outputs a low-frequency sound. When the remaining usage time is ≤10 minutes, the microprocessor determines it to be in a second-level alarm state, sends a red light signal to the tri-color LED 8, and sends a high-frequency sound signal to the buzzer 9. The tri-color LED 8 illuminates red, and the buzzer 9 outputs a high-frequency sound, thus completing the different levels of alarm prompts.

[0046] On the other hand, the present invention provides a technical solution: a portable transport oxygen source endurance warning method based on ventilator parameter input, comprising the following steps:

[0047] S1: Fix the oxygen cylinder 14 in the fixing sleeve 10 of the base 1, and connect the oxygen cylinder 14, flow sensor 12, pressure reducing valve 13 and air inlet 6 of ventilator 4 in sequence through the pipe, and connect the air outlet 7 to the ventilator mask, turn on the power of the device, and connect the controller 15 to ventilator 4, pressure sensor 11 and flow sensor 12 through the communication interface.

[0048] S2: Select the oxygen cylinder specification via the touch display screen 5, select the oxygen supply mode according to the usage scenario, and input the parameters of the corresponding mode;

[0049] S3: The microprocessor acquires the absolute pressure inside the bottle in real time through the pressure sensor 11, and combines it with the flow data collected by the flow sensor 12 and the input parameters to calculate the total amount of oxygen that can be released through basic calculation logic. Average oxygen consumption flow rate and remaining usage time ;

[0050] S4: The touchscreen display 5 shows the monitoring data in real time, and the microprocessor... Numerical values ​​and dynamic calibration results trigger alarms of the corresponding levels;

[0051] S5: After the gas source replacement or transfer is completed, turn off the power to the device and disconnect all pipeline connections.

[0052] It should be noted that all standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a control cabinet. The control circuit can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Furthermore, since this application is mainly used to protect mechanical devices, this application will not explain the control method and circuit connection in detail.

Claims

1. A portable transport oxygen source endurance warning device based on ventilator parameter input, characterized in that, The device includes a base (1) and a controller (15). A column (3) is mounted on the top surface of the base (1), and a ventilator (4) is supported on the top surface of the column (3). The controller (15) contains a microprocessor with built-in basic computing logic, dynamic calibration logic, and a graded alarm mechanism. An alarm module is also mounted on the front of the controller (15). A display module is embedded on the front of the ventilator (4). The ventilator (4) has an air inlet (6) and an air outlet (7). The top surface of the base (1) is also equipped with... The base (1) is equipped with a fixing sleeve (10), inside which is an oxygen cylinder (14). A pressure sensor (11) is installed on the top of the oxygen cylinder (14). A flow sensor (12) is connected to the output end of the oxygen cylinder (14). A pressure reducing valve (13) is connected to the free end of the flow sensor (12). The free end of the pressure reducing valve (13) is connected to the air inlet (6) through a pipe. A ventilator mask is connected to the air outlet (7) through a pipe. Four casters (2) are installed on the bottom surface of the base (1).

2. The portable transport oxygen source endurance warning device based on ventilator parameter input according to claim 1, characterized in that, The display module is a touch screen (5), and the alarm module includes a tri-color LED light (8) and a buzzer (9). The microprocessor is connected to the ventilator (4), the touch screen (5), the tri-color LED light (8), the buzzer (9), the pressure sensor (11), and the flow sensor (12).

3. The portable transport oxygen source endurance warning device based on ventilator parameter input according to claim 1, characterized in that, The formula for the basic computational logic is as follows: in, The average oxygen consumption flow rate, Tidal volume, Respiratory rate, This is the flow correction factor. Based on the airflow, The total amount of oxygen that can be released. This represents the current absolute pressure inside the bottle. Let be the volume constant of the oxygen cylinder. This represents the remaining usage time.

4. The portable transport oxygen source endurance warning device based on ventilator parameter input according to claim 1, characterized in that, The dynamic calibration logic monitors the deviation between the actual pressure drop rate and the theoretical pressure drop rate, and automatically corrects the remaining time using the microprocessor.

5. A portable transport oxygen source endurance warning device based on ventilator parameter input according to claim 1, characterized in that, The microprocessor also has a built-in temperature correction factor. When the ambient temperature is <10℃, When 35℃ ≥ ambient temperature ≥ 10℃, When the ambient temperature is >35℃, .

6. A portable transport oxygen source endurance warning device based on ventilator parameter input according to claim 1, characterized in that, The ventilator (4) also has a lithium battery inside, and a power interface is embedded on the outside of the ventilator (4).

7. A portable transport oxygen source endurance warning device based on ventilator parameter input according to claim 2, characterized in that, The tiered alarm mechanism is based on The numerical values ​​trigger the operation of the tri-color LED (8) and the buzzer (9), specifically: Normal state ( >30 minutes): The tri-color LED light (8) is in a green light-emitting state, and the buzzer (9) does not sound; Level 1 warning (10 minutes or less) ≤30 minutes): The tri-color LED (8) emits yellow light, and the buzzer (9) outputs a low-frequency sound; Level 2 alarm ( ≤10 minutes): The three-color LED light (8) is red and the buzzer (9) outputs a high-frequency sound.

8. A portable transport oxygen source endurance warning method based on ventilator parameter input, as applied to one or more of the portable transport oxygen source endurance warning devices based on ventilator parameter input as described in claims 1-7, characterized in that, Includes the following steps: S1: Fix the oxygen cylinder (14) in the fixing sleeve (10) of the base (1), and connect the oxygen cylinder (14), flow sensor (12), pressure reducing valve (13) and the air inlet (6) of the ventilator (4) in sequence through the pipe, and connect the air outlet (7) to the ventilator mask, turn on the power of the device, and connect the controller (15) to the ventilator (4), pressure sensor (11) and flow sensor (12) through the communication interface; S2: Select the oxygen cylinder specification via the touch screen (5), select the oxygen supply mode according to the usage scenario, and input the parameters of the corresponding mode; S3: The microprocessor obtains the absolute pressure inside the bottle in real time through the pressure sensor (11), and combines the flow data collected by the flow sensor (12) with the input parameters to calculate the total amount of oxygen that can be released through basic calculation logic. Average oxygen consumption flow rate and remaining usage time ; S4: The touch screen (5) displays the monitoring data in real time, and the microprocessor calculates the data according to the data. Numerical values ​​and dynamic calibration results trigger alarms of the corresponding levels; S5: After the gas source replacement or transfer is completed, turn off the power to the device and disconnect all pipeline connections.

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