Intelligent oxygen generator with blood oxygen saturation control function

Abstract

The utility model discloses an intelligent oxygen generator with an oxyhemoglobin saturation control function, which comprises a pulse and oxyhemoglobin detection terminal used for monitoring the oxyhemoglobin saturation and the heart rate of a patient in real time; the oxygen generating device is used for separating oxygen from the air and providing the oxygen to the patient; the main control module is used for controlling the working state and the oxygen output flow of the oxygen production device; the flow monitoring module is used for monitoring the oxygen output flow of the oxygen production device in real time and transmitting the flow data to the main control module; the Bluetooth device is used for wirelessly transmitting monitoring data of the pulse blood oxygen detection terminal to the main control module; and the voice control module is electrically connected with the main control module and is used for realizing recognition and feedback of a user voice instruction. Through the signal conditioning circuit, the purity and stability of signals are improved, and the accuracy of data is ensured; through an intelligent closed-loop adjusting mechanism, the oxygen flow can be automatically adjusted according to the blood oxygen saturation degree of a patient; and the intelligent degree is high, and equipment operation is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of intelligent oxygen generator technology, and in particular to an intelligent oxygen generator with blood oxygen saturation control function. Background Technology

[0002] In the field of medical care, the importance of oxygen concentrators as an indispensable medical device is self-evident. They are widely used in the treatment of various patients requiring supplemental oxygen, particularly in scenarios involving respiratory diseases (such as chronic obstructive pulmonary disease and emphysema), cardiovascular diseases (such as heart disease and heart failure), and postoperative recovery. These conditions often require long-term or short-term oxygen therapy to maintain the patient's blood oxygen saturation at a normal level, thereby improving their condition and quality of life. However, most oxygen concentrators on the market still require manual adjustment of the oxygen flow rate. This manual adjustment method is not only cumbersome but also often fails to achieve precise control. Especially at night or in emergencies, manual adjustment may be delayed due to insufficient light or time constraints, and may even lead to misoperation, posing a potential threat to the patient's health.

[0003] To address these issues, the industry has begun exploring the integration of blood oxygen saturation monitoring into oxygen concentrators. By monitoring a patient's blood oxygen saturation in real time, the oxygen concentrator can automatically adjust the oxygen output flow rate based on the patient's actual condition, thereby achieving precise treatment. For example, an existing patent document (application number 2020103939534) discloses an intelligent oxygen therapy concentrator with blood oxygen saturation control functionality. This concentrator uses a built-in pulse oximetry terminal to monitor the patient's blood oxygen saturation and heart rate in real time, and then automatically adjusts the oxygen output flow rate based on the monitoring results, ensuring that the patient receives the most suitable oxygen therapy.

[0004] However, although this intelligent oxygen therapy generator has solved the problems of imprecision and untimely manual adjustment to some extent, it still has some shortcomings in practical applications. For example, existing oxygen generators have deficiencies in oxygen flow monitoring and signal processing, affecting the precise control of oxygen flow and the accuracy of data. At the same time, the lack of closed-loop regulation control in oxygen flow adjustment makes it impossible to accurately and quickly respond to changes in blood oxygen saturation, thus affecting the treatment effect.

[0005] Therefore, this utility model provides a new solution to this problem. Utility Model Content

[0006] In view of the above situation and to overcome the defects of the existing technology, the purpose of this utility model is to provide an intelligent oxygen generator with blood oxygen saturation control function.

[0007] The technical solution is: an intelligent oxygen generator with blood oxygen saturation control function, comprising:

[0008] The pulse oximetry terminal is used to monitor a patient's blood oxygen saturation and heart rate in real time.

[0009] An oxygen generator is used to separate oxygen from the air and provide it to the patient;

[0010] The main control module is used to control the working status and oxygen output flow of the oxygen generator;

[0011] The flow monitoring module is used to monitor the oxygen output flow of the oxygen generator in real time and transmit the flow data to the main control module.

[0012] A Bluetooth device is used to wirelessly transmit the monitoring data from the pulse oximetry detection terminal to the main control module; and

[0013] The voice control module is electrically connected to the main control module and is used to recognize and respond to user voice commands.

[0014] Preferably, the traffic monitoring module includes:

[0015] A flow sensor is installed on the oxygen output pipe of the oxygen generator to measure the oxygen flow rate;

[0016] A signal conditioning circuit is used to amplify and filter the output signal of the flow sensor to make it suitable for further digital processing;

[0017] An A / D converter is used to convert the signal processed by the signal conditioning circuit into a digital signal and send it to the main control module for processing and analysis.

[0018] Preferably, the signal conditioning circuit includes:

[0019] A low-pass filter, electrically connected to the flow sensor, is used to filter out high-frequency noise and interference signals in the signal, while retaining the useful low-frequency signal;

[0020] An amplifier and shaper is used to amplify and shape the signal output from the low-pass filter.

[0021] A stabilizer is used to stabilize the signal output by the amplifier and shaper, so that the signal can be stably sent into the A / D converter.

[0022] Preferably, the low-pass filter includes resistors R1 and R2 and capacitors C1 and C2. One end of resistor R1 is connected to the signal output terminal of the flow sensor, and the other end of resistor R1 is connected to the output terminal of the amplifier and shaper through capacitor C1. Resistor R2 is connected to one end of capacitor C2 and the input terminal of the amplifier and shaper through resistor R2. The other end of capacitor C2 is grounded.

[0023] Preferably, the amplification and shaping device includes an operational amplifier AR1. The non-inverting input terminal of the operational amplifier AR1 is connected to one end of the capacitor C2, the inverting input terminal of the operational amplifier AR1 is connected to one end of the capacitor C3 and the anode of the diode D1, and is grounded through a resistor R3. The output terminal of the operational amplifier AR1 is connected to one end of the capacitor C1, the other end of the capacitor C3 and the cathode of the diode D1, and is grounded through a resistor R4.

[0024] Preferably, the stabilizer includes resistors R5 and R6 and capacitor C4. One end of resistor R5 is connected to the output terminal of operational amplifier AR1, and the other end of resistor R5 is connected to one end of capacitor C4 and the A / D converter. The other end of capacitor C4 is grounded through resistor R6.

[0025] Preferably, the main control module is an SC92F8482 microcontroller.

[0026] Preferably, the Bluetooth device is a ZEN-BD10-A Bluetooth module.

[0027] Preferably, the intelligent oxygen generator further includes a display module, the display module comprising:

[0028] The drive controller is used to receive data signals from the main control module and convert them into a displayable format;

[0029] An LED display, electrically connected to the drive controller, is used to display real-time data from the intelligent oxygen generator.

[0030] Preferably, the drive controller is a GN1640 drive control chip.

[0031] Through the above technical solutions, the beneficial effects of this utility model are as follows:

[0032] 1. In terms of oxygen flow monitoring and signal processing, the intelligent oxygen generator of this application effectively reduces noise, amplifies, and shapes the output signal of the flow sensor by having a low-pass filter, an amplifier, a shaper, and a stabilizer work together in the signal conditioning circuit. This improves the purity and stability of the signal and ensures the accuracy of the data. In addition, through an intelligent closed-loop adjustment mechanism, it can automatically adjust the oxygen flow based on the patient's blood oxygen saturation, tailoring a personalized oxygen therapy plan for the patient. This not only improves the treatment effect but also ensures the high efficiency and safety of oxygen use.

[0033] 2. The system wirelessly transmits the monitoring data from the pulse oximetry terminal to the main control module via Bluetooth, enabling real-time acquisition and processing of blood oxygen data; and adds a voice control module, allowing users to easily control and operate the oxygen concentrator through voice commands, further improving the ease of use of the oxygen concentrator equipment. Attached Figure Description

[0034] Figure 1 This is a system module structure diagram of this utility model.

[0035] Figure 2 This is a circuit diagram of the flow monitoring module in this utility model.

[0036] Figure 3 This is the circuit schematic diagram of the main control module in this utility model.

[0037] Figure 4 This is a circuit diagram of the Bluetooth device in this utility model.

[0038] Figure 5 This is a circuit diagram of the voice control module in this utility model.

[0039] Figure 6 This is the circuit schematic diagram of the drive controller in this utility model.

[0040] Figure 7 This is a circuit diagram of the LED display in this utility model. Detailed Implementation

[0041] The foregoing and other technical contents, features and effects of this utility model are described in conjunction with the appendix below. Figure 1 To be continued Figure 7 The detailed description of the embodiments will make this clear. All structural details mentioned in the following embodiments are based on the accompanying drawings.

[0042] Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings.

[0043] like Figure 1 As shown, a smart oxygen concentrator with blood oxygen saturation control function includes:

[0044] The pulse oximetry terminal is used to monitor a patient's blood oxygen saturation and heart rate in real time.

[0045] An oxygen generator is used to separate oxygen from the air and provide it to the patient;

[0046] The main control module is used to control the working status of the oxygen generator and the oxygen output flow rate;

[0047] The flow monitoring module is used to monitor the oxygen output flow of the oxygen generator in real time and transmit the flow data to the main control module.

[0048] A Bluetooth device is used to wirelessly transmit monitoring data from the pulse oximetry terminal to the main control module; and

[0049] The voice control module is electrically connected to the main control module and is used to recognize and respond to user voice commands.

[0050] In the above-described manner, the pulse oximetry terminal monitors the patient's blood oxygen saturation and heart rate in real time using a non-invasive method, and wirelessly transmits the monitoring data to the main control module via Bluetooth. Throughout the entire process, the flow monitoring module monitors the oxygen output flow rate of the oxygen generator in real time to ensure the stability of the oxygen supply.

[0051] In one specific implementation, to ensure the stability of the oxygen supply from the intelligent oxygen generator, the design of the flow monitoring module specifically includes:

[0052] A flow sensor is installed on the oxygen output pipe of the oxygen generator to measure the oxygen flow rate;

[0053] Signal conditioning circuitry is used to amplify and filter the output signal of the flow sensor, making it suitable for further digital processing;

[0054] An A / D converter is used to convert the signal processed by the signal conditioning circuit into a digital signal and send it to the main control module for processing and analysis.

[0055] like Figure 2 As shown, the signal conditioning circuit includes:

[0056] A low-pass filter, electrically connected to the flow sensor, is used to filter out high-frequency noise and interference signals in the signal, while retaining the useful low-frequency signal.

[0057] An amplifier and shaper is used to amplify and shape the signal output from a low-pass filter.

[0058] A stabilizer is used to stabilize the signal output from the amplification and shaping device, so that the signal can be stably sent into the A / D converter.

[0059] In one specific implementation, such as Figure 2As shown, the low-pass filter includes resistors R1 and R2, and capacitors C1 and C2. One end of resistor R1 is connected to the signal output terminal of the flow sensor, and the other end of resistor R1 is connected to the output terminal of the amplifier and shaper through capacitor C1, and then connected to one end of capacitor C2 through resistor R2 and the input terminal of the amplifier and shaper. The other end of capacitor C2 is grounded. Inside the low-pass filter, a dual RC low-pass filter is used to reduce noise in the output signal of the flow sensor. This filtering method allows low-frequency signals to pass through, while high-frequency signals are attenuated and suppressed, thus retaining only the useful low-frequency signals.

[0060] The signal processed by the low-pass filter is sent to the amplifier and shaper for further amplification and shaping. Specifically, the amplifier and shaper includes an operational amplifier AR1. The non-inverting input of the operational amplifier AR1 is connected to one end of the capacitor C2. The inverting input of the operational amplifier AR1 is connected to one end of the capacitor C3 and the anode of the diode D1, and is grounded through the resistor R3. The output of the operational amplifier AR1 is connected to one end of the capacitor C1, the other end of the capacitor C3, and the cathode of the diode D1, and is grounded through the resistor R4.

[0061] During the operation of the amplifier and shaper, operational amplifier AR1, as the core of the amplifier and shaper, is used to amplify the signal output from the low-pass filter. In this process, capacitor C3 acts as a negative feedback element, not only helping to stabilize the operating point of the operational amplifier and preventing nonlinear distortion caused by excessively large or small signals, but also reducing external noise interference and ensuring signal purity. Simultaneously, capacitor C3 also provides necessary phase compensation, ensuring phase consistency of the signal during amplification and avoiding signal distortion caused by phase differences.

[0062] In addition to signal amplification, the amplifier shaper also achieves signal shaping through diode D1 connected in parallel to the negative feedback terminal of op-amp AR1. The non-linear characteristics of diode D1 allow it to conduct when the signal reaches a certain threshold, thus limiting the voltage at the op-amp output to a relatively stable level. This process not only helps eliminate glitches and spikes in the signal but also makes the output signal smoother and more stable, facilitating subsequent circuit processing and analysis.

[0063] The stabilizer is used to further stabilize and amplify the shaped signal. Specifically, it includes resistors R5 and R6 and capacitor C4. One end of resistor R5 is connected to the output of operational amplifier AR1, and the other end of resistor R5 is connected to one end of capacitor C4 and the A / D converter. The other end of capacitor C4 is grounded through resistor R6.

[0064] In the stabilizer circuit design, the combined effect of resistors and capacitors further filters out high-frequency noise, ensuring higher signal purity before entering the A / D converter. Furthermore, the values ​​of resistors R5 and R6 need to be precisely matched based on the output impedance of op-amp AR1 and the input impedance of the A / D converter to ensure efficient and accurate signal transmission.

[0065] In the overall design, the flow monitoring module, as a key component of the intelligent oxygen generator, ensures the stability and safety of the oxygen supply. Once the flow sensor detects a change in oxygen flow rate, this information is preprocessed by the signal conditioning circuit and finally converted into a digital signal by the A / D converter for further analysis and control by the main control module. After receiving the digital signal from the A / D converter, the main control module performs real-time data processing and comparison to determine whether the current oxygen flow rate meets the preset standard. If the flow rate is too fast or too slow, the main control module will immediately activate the corresponding adjustment mechanism, such as adjusting the working power of the oxygen generator or switching to a backup oxygen source, to ensure the continuity and stability of the oxygen supply.

[0066] In one specific implementation, the intelligent oxygen concentrator can automatically adjust the oxygen flow rate based on the patient's blood oxygen saturation to meet the breathing needs of different patients. For example, when the blood oxygen concentration is ≤90%, the concentrator will automatically adjust the gas flow rate to the recommended flow rate of 5L / min ± 0.2L / min to quickly raise the patient's blood oxygen level; when the blood oxygen concentration is stable at 93% ± 2%, the concentrator will adjust the gas flow rate to 4L / min ± 0.2L / min to maintain a stable blood oxygen level; and when the blood oxygen concentration is >95%, to prevent oxygen toxicity and reduce unnecessary oxygen waste, the concentrator will reduce the gas flow rate to 3L / min ± 0.2L / min. Through this intelligent closed-loop adjustment mechanism, the intelligent oxygen concentrator can provide patients with personalized oxygen therapy plans while ensuring the high efficiency and safety of oxygen use.

[0067] In one specific implementation, such as Figure 3 As shown, the main control module uses an SC92F8482 microcontroller. This microcontroller has high-speed processing capabilities and rich I / O interfaces, enabling real-time monitoring and analysis of the patient's blood oxygen saturation data. Furthermore, this microcontroller integrates multiple communication interfaces, such as Serial Communication Interface (SCI), I2C, and SPI, allowing the intelligent oxygen concentrator to exchange data with external devices and be remotely controlled.

[0068] In actual use, such as Figure 4As shown, the Bluetooth device uses the ZEN-BD10-A Bluetooth module, which is based on the AC6926A chip, conforms to the Bluetooth 5.0 specification, and supports BLE data transmission and various classic Bluetooth protocols such as A2DP, AVRCP, HFP, SPP, and HID. Throughout the process, the ZEN-BD10-A Bluetooth module is responsible for transmitting the pulse oximetry monitoring data from the terminal to the main control module in real time, so that the main control module can adjust the oxygen concentrator's operating status according to the patient's actual blood oxygen saturation.

[0069] At the same time, such as Figure 5 As shown, the voice control module uses the YT2216-SOP16 offline voice recognition module, supporting functions such as fast voice pickup, noise reduction, recognition, command feedback, and communication interaction. When a user issues a voice command, the voice control module first captures and records the command content, using command words to control the device's wake-up, start operation, stop operation, increase bandwidth, decrease bandwidth, and timer functions. Subsequently, the built-in voice recognition engine parses and recognizes the command. Once recognition is successful, the voice control module transmits the parsed command signal to the main control module. The main control module executes the corresponding control operation based on the received command signal and provides feedback to the user on the operation result or status information through the voice control module.

[0070] The intelligent oxygen concentrator also includes a display module, such as Figure 6-7 As shown, the display module includes:

[0071] The drive controller is used to receive data signals from the main control module and convert them into a displayable format;

[0072] The LED display, electrically connected to the drive controller, is used to display real-time data from the intelligent oxygen generator.

[0073] The drive controller uses the GN1640 drive control chip, which, with its high efficiency and stability, can quickly convert received data signals into a format that the LED display can recognize and display. During the use of the intelligent oxygen concentrator, the LED display can clearly show real-time data such as blood oxygen saturation, flow rate, and operating time, allowing users to easily understand the equipment's operating status and the patient's health condition.

[0074] In summary, the intelligent oxygen concentrator of this application, in terms of oxygen flow monitoring and signal processing, effectively reduces noise, amplifies, and shapes the output signal of the flow sensor through the coordinated operation of a low-pass filter, amplifier, shaper, and stabilizer in the signal conditioning circuit. This improves the purity and stability of the signal, ensuring data accuracy. Furthermore, through an intelligent closed-loop adjustment mechanism, it can automatically adjust the oxygen flow based on the patient's blood oxygen saturation, tailoring a personalized oxygen therapy plan for each patient. This not only enhances treatment effectiveness but also ensures the high efficiency and safety of oxygen use.

[0075] Meanwhile, the system wirelessly transmits the pulse oximetry data from the pulse oximetry terminal to the main control module via Bluetooth, enabling real-time acquisition and processing of blood oxygen data. A voice control module has also been added, allowing users to easily control and operate the oxygen concentrator via voice commands, further enhancing the device's usability. This is especially beneficial in emergency situations, providing patients and medical staff with a more convenient and rapid response and operation method.

[0076] The above description is a further detailed explanation of the present utility model in conjunction with specific embodiments, and it should not be considered that the specific implementation of the present utility model is limited to this. For those skilled in the art to which the present utility model pertains and related fields, any extensions, operation methods, and data substitutions made based on the technical solution concept of the present utility model should fall within the protection scope of the present utility model.

Claims

1. A smart oxygen generator with blood oxygen saturation control function, characterized in that, include: The pulse oximetry terminal is used to monitor a patient's blood oxygen saturation and heart rate in real time. An oxygen generator is used to separate oxygen from the air and provide it to the patient; The main control module is used to control the working status and oxygen output flow of the oxygen generator; The flow monitoring module is used to monitor the oxygen output flow of the oxygen generator in real time and transmit the flow data to the main control module. A Bluetooth device is used to wirelessly transmit the monitoring data of the pulse oximetry detection terminal to the main control module; as well as The voice control module is electrically connected to the main control module and is used to recognize and respond to user voice commands.

2. The intelligent oxygen generator with blood oxygen saturation control function according to claim 1, characterized in that, The traffic monitoring module includes: A flow sensor is installed on the oxygen output pipe of the oxygen generator to measure the oxygen flow rate; A signal conditioning circuit is used to amplify and filter the output signal of the flow sensor to make it suitable for further digital processing; An A / D converter is used to convert the signal processed by the signal conditioning circuit into a digital signal and send it to the main control module for processing and analysis.

3. The intelligent oxygen generator with blood oxygen saturation control function according to claim 2, characterized in that, The signal conditioning circuit includes: A low-pass filter, electrically connected to the flow sensor, is used to filter out high-frequency noise and interference signals in the signal, while retaining the useful low-frequency signal; An amplifier and shaper is used to amplify and shape the signal output from the low-pass filter. A stabilizer is used to stabilize the signal output by the amplifier and shaper, so that the signal can be stably sent into the A / D converter.

4. The intelligent oxygen generator with blood oxygen saturation control function according to claim 3, characterized in that, The low-pass filter includes resistors R1 and R2, and capacitors C1 and C2. One end of resistor R1 is connected to the signal output terminal of the flow sensor, and the other end of resistor R1 is connected to the output terminal of the amplifier and shaper through capacitor C1. Resistor R2 is connected to one end of capacitor C2 and the input terminal of the amplifier and shaper through resistor R2. The other end of capacitor C2 is grounded.

5. The intelligent oxygen generator with blood oxygen saturation control function according to claim 3, characterized in that, The amplifier and shaper includes an operational amplifier AR1. The non-inverting input of the operational amplifier AR1 is connected to one end of a capacitor C2. The inverting input of the operational amplifier AR1 is connected to one end of a capacitor C3 and the anode of a diode D1, and is grounded through a resistor R3. The output of the operational amplifier AR1 is connected to one end of a capacitor C1, the other end of a capacitor C3, and the cathode of a diode D1, and is grounded through a resistor R4.

6. The intelligent oxygen generator with blood oxygen saturation control function according to claim 3, characterized in that, The stabilizer includes resistors R5 and R6 and capacitor C4. One end of resistor R5 is connected to the output terminal of operational amplifier AR1, and the other end of resistor R5 is connected to one end of capacitor C4 and the A / D converter. The other end of capacitor C4 is grounded through resistor R6.

7. The intelligent oxygen generator with blood oxygen saturation control function according to claim 1, characterized in that, The main control module uses an SC92F8482 microcontroller.

8. The intelligent oxygen generator with blood oxygen saturation control function according to claim 1, characterized in that, The Bluetooth device uses the ZEN-BD10-A Bluetooth module.

9. The intelligent oxygen generator with blood oxygen saturation control function according to claim 1, characterized in that, The intelligent oxygen generator also includes a display module, which includes: The drive controller is used to receive data signals from the main control module and convert them into a displayable format; An LED display, electrically connected to the drive controller, is used to display real-time data from the intelligent oxygen generator.

10. A smart oxygen generator with blood oxygen saturation control function according to claim 9, characterized in that, The drive controller uses the GN1640 drive control chip.

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