Waste gas monitoring and collecting treatment system for breathing machine

Abstract

The invention discloses a waste gas monitoring and collecting treatment system for a breathing machine, and relates to the technical field of breathing machine waste gas treatment equipment. A containing main body is provided with an input port connected with the breathing machine and an output port connected with a waste gas treatment system; the accommodating main body is provided with a sensor module, a signal processing module, a control module, a display and alarm module, a communication module and a power supply module, and the sensor module is an infrared sensor; the sensor module is connected with the signal processing module, the signal processing module is connected with the control module, and the control module is connected with the display and alarm module, the communication module and the power supply module. The filter is positioned at the input port of the accommodating main body, and the output end of the filter is connected with the input end of the flow controller. According to the breathing machine, the amount of carbon dioxide generated by the breathing machine can be detected in real time, bacteria in waste gas can be removed, and therefore doctors can be helped to know the breathing condition of a patient more conveniently, and surrounding people are prevented from being infected.

Description

Technical Field

[0001] The present invention relates to the technical field of exhaust gas treatment equipment for ventilators, and in particular to an exhaust gas monitoring and collection and treatment system for ventilators. Background Art

[0002] Some patients who have difficulty breathing need a ventilator to help them breathe. Generally, the exhaust gas from the ventilator is discharged directly into the room. The bacteria in the exhaust gas will pollute the environment. In addition, in the actual work process, in order to judge the patient's breathing condition, it is often necessary to test the carbon dioxide content exhaled by the patient to judge the patient's breathing condition based on the carbon dioxide content.

[0003] Therefore, it is currently necessary to detect the amount of carbon dioxide in the exhaust gas from the ventilator in real time, so as to judge the patient's breathing condition and treat the exhaust gas to avoid polluting the environment. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art and to provide an exhaust gas monitoring and collection and processing system for a ventilator, which can detect the amount of carbon dioxide generated by the ventilator in real time, thereby helping doctors to know the patient's breathing condition more conveniently, and can process the exhaust gas to prevent it from polluting the environment.

[0005] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0006] A waste gas monitoring and collection processing system for a ventilator, comprising a housing body and a waste gas collection device,

[0007] A housing body, wherein the housing body is provided with an input port connected to the ventilator and an output port connected to the exhaust gas treatment system; the housing body is provided with a sensor module, a signal processing module, a control module, a display and alarm module, a communication module and a power supply module, and the sensor module is an infrared carbon dioxide sensor;

[0008] The sensor module is connected to the signal processing module, the signal processing module is connected to the control module, and the control module is connected to the display and alarm module, the communication module and the power module;

[0009] A bacteria filtering structure is also arranged in the containing body.

[0010] Furthermore, it also includes a filter and a flow controller, wherein the flow controller has a flow meter and an absorber, the filter is located at the input port of the containing body, and the output end of the filter is connected to the input end of the flow controller.

[0011] Furthermore, the signal processing module includes an analog signal processing circuit for amplifying and filtering the analog signal output by the sensor;

[0012] A / D converter, used to convert analog signals into digital signals.

[0013] Furthermore, the control module includes:

[0014] Microprocessor, responsible for data processing, analysis and control of the entire detection process;

[0015] Memory: used to store detection data and system operation programs.

[0016] Furthermore, the display and alarm module includes:

[0017] Display screen, used to display the carbon dioxide concentration value in real time;

[0018] LED indicator light, used to indicate the working status of the device;

[0019] Buzzer, which sounds an alarm when the carbon dioxide concentration exceeds the standard.

[0020] Furthermore, the power module includes:

[0021] Batteries: provide power for portable devices;

[0022] Power Adapter: A device used to supply power from AC power.

[0023] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0024] The gas coming out of the ventilator enters the containing body, and then the corresponding carbon dioxide signal is obtained through the sensor module. After the signal is processed by the signal processing module and the control module, the carbon dioxide content is displayed in real time through the display and alarm module, and finally all the waste gas enters the waste gas collection device; wherein, the bacteria filtration structure can remove bacteria in the waste gas. The present invention has a simple structure, is easy to carry, and can detect the amount of carbon dioxide generated by the ventilator in real time, remove bacteria in the waste gas, and the waste gas will not enter the air, thereby helping doctors to know the patient's breathing condition more conveniently and take corresponding treatment measures, and avoid bacteria from polluting the environment and infecting people around. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the internal structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the working principle of the infrared carbon dioxide sensor of the present invention;

[0027] Figure 3Schematic diagram of the implementation structure of the system of the present invention.

[0028] Parts names and reference numbers:

[0029] 1-container body, 2-filter, 3-flow controller, 4-infrared sensor, 5-input port, 6-output port, 7-ventilator, 8-waste gas collection device. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with test examples and specific implementation methods. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0031] This embodiment provides an exhaust gas monitoring and collection and processing system for a ventilator, such as Figure 1-Figure 3 As shown, it includes a containing body 1 and an exhaust gas collecting device 8;

[0032] The housing body 1 is provided with an input port 5 connected to the ventilator 7 and an output port 6 connected to the exhaust gas collection device 8; the housing body 1 is provided with a sensor module, a signal processing module, a control module, a display and alarm module, a communication module and a power module, the sensor module is an infrared carbon dioxide sensor, and a bacteria filtering structure is also provided in the housing body 1; wherein the housing body 1 is a square body structure as a whole, and a handle is provided on the housing body 1, such a configuration can facilitate the user to move.

[0033] Among them, the infrared carbon dioxide sensor is an optical sensor composed of an infrared light source, an optical path, an infrared detector, a circuit and a software algorithm, and can be used to detect the concentration of carbon dioxide. There is a spectral light source inside the sensor that emits infrared light. The light passes through the gas to be measured in the optical path, passes through a narrow-band filter, and reaches the infrared detector. Due to the selective absorption characteristics of the near-infrared spectrum of gas molecules, molecules of different substances will selectively absorb light of a certain wavelength. For carbon dioxide gas, carbon dioxide gas has an absorption peak in the 4.26um infrared region. At this wavelength, oxygen, ammonia, carbon monoxide, water vapor and other gases have no obvious absorption. Therefore, by calculating the relationship between the concentration of carbon dioxide gas and the absorption intensity, the concentration of carbon dioxide gas can be measured.

[0034] The specific algorithm of carbon dioxide (CO2) sensor usually involves multiple steps and techniques, including signal processing, compensation algorithm and calibration algorithm. The following are some common algorithms involved:

[0035] Signal processing algorithms:

[0036] Filtering algorithm: used to eliminate noise in sensor signals. Common filtering algorithms include low-pass filter, mean filter and Kalman filter.

[0037] Amplification and conversion: Sensor signals may need to be amplified and converted to an appropriate voltage range for subsequent processing.

[0038] Temperature compensation algorithm:

[0039] Temperature sensor data fusion: The readings of the CO2 sensor are affected by the ambient temperature, so the data from the temperature sensor is needed to compensate for the effect of temperature on the CO2 readings.

[0040] Compensation formula: Determine the effect of temperature on CO2 readings through experimental calibration, and use mathematical models (such as linear regression, polynomial regression, etc.) to compensate for this effect.

[0041] Nonlinear correction algorithm:

[0042] Multi-point calibration: By calibrating at multiple known CO2 concentration points, the relationship between the sensor output and the actual CO2 concentration is established.

[0043] Interpolation algorithm: Use interpolation algorithms (such as linear interpolation and spline interpolation) between multi-point correction data to correct nonlinear errors.

[0044] Drift compensation algorithm:

[0045] Zero drift compensation: The sensor will drift over time and the zero reading of the sensor needs to be corrected regularly.

[0046] Automatic calibration algorithm: Use fresh air from the environment (assuming the CO2 concentration is known) to periodically calibrate the sensor.

[0047] Data fusion and optimization algorithms:

[0048] Multi-sensor fusion: If there are multiple CO2 sensors in the system, data fusion algorithms (such as Kalman filtering) can be used to improve measurement accuracy and reliability.

[0049] Machine Learning Algorithms: Use machine learning methods (such as neural networks, support vector machines, etc.) to optimize the calibration and compensation process of sensor readings.

[0050] Sensor-specific algorithms:

[0051] Infrared absorption algorithm (NDIR sensor): Non-dispersive infrared (ND IR) CO2 sensors estimate CO2 concentration by measuring the absorption of infrared light. Compensation needs to be made for the intensity of the infrared light source, absorption path length, etc., and the concentration is calculated using the Beer-Lambert law.

[0052] Thermal conductivity algorithm: Thermal conductivity CO2 sensors estimate CO2 concentration by measuring changes in the thermal conductivity of a gas mixture, which requires compensation and correction for changes in gas composition and temperature.

[0053] Through these algorithms, the carbon dioxide sensor can measure the CO2 concentration in the environment more accurately and stably.

[0054] The sensor module is connected to the signal processing module, the signal processing module is connected to the control module, and the control module is connected to the display and alarm module, the communication module and the power module.

[0055] The gas coming out of the ventilator 7 enters the containing body 1, and then the corresponding carbon dioxide signal is obtained through the sensor module. After the signal is processed by the signal processing module and the control module, the carbon dioxide content is displayed in real time through the display and alarm module, and finally all the waste gas enters the waste gas collection device 8. Among them, the bacterial filtration structure can remove bacteria in the waste gas. The present invention has a simple structure, is easy to carry, and can detect the amount of carbon dioxide generated by the ventilator 7 in real time, remove bacteria in the waste gas, and prevent the waste gas from entering the air, thereby helping doctors to know the patient's breathing condition more conveniently and take corresponding treatment measures, and prevent bacteria in the waste gas from entering the air to pollute the environment and the people around it.

[0056] The above embodiment is further optimized to further include a filter 2 and a flow controller 3 , the flow controller 3 has a flow meter and an absorber, the filter 2 is located at the input port 5 of the housing body 1 , and the output end of the filter 2 is connected to the input end of the flow controller 3 .

[0057] For patients receiving ventilator treatment, the patient's exhaled gas is discharged through the ventilator exhaust port. No resistance should be generated when the gas is discharged, otherwise it will affect the patient's breathing. If the exhausted gas is directly sucked out by the negative pressure of the hospital center, it will be detected by the ventilator sensor, causing the patient's exhalation time to be prolonged, affecting the normal air supply of the ventilator, and causing harm to the patient.

[0058] During the actual working process, the exhaust gas of the ventilator enters the present invention, passes through the filter, and is monitored by a flow meter for the gas source flow. When the gas source flow changes, the flow meter sends a signal, and the absorber adjusts the size of the absorption airflow through the flow signal, always keeping it compatible with the exhaust frequency and flow of the ventilator, so as not to cause exhaust blockage of the ventilator, and not to cause over-inhalation to affect the normal operation of the ventilator. For safety reasons, a safety valve is designed in the housing body. The safety valve is a device for ventilating when the absorber fails. It is generally set to below 1.2kPa. When the airway pressure exceeds the safety pressure of the airway system, the safety valve opens to release air, thereby not affecting the normal operation of the ventilator.

[0059] The above embodiment is further optimized, the signal processing module includes an analog signal processing circuit, which is used to amplify and filter the analog signal output by the sensor;

[0060] A / D converter, used to convert analog signals into digital signals.

[0061] Further optimizing the above embodiment, the control module includes:

[0062] Microprocessor, responsible for data processing, analysis and control of the entire detection process;

[0063] Memory: used to store detection data and system operation programs.

[0064] The above embodiment is further optimized, and the display and alarm module includes:

[0065] Display screen, used to display the carbon dioxide concentration value in real time;

[0066] LED indicator light, used to indicate the working status of the device;

[0067] Buzzer, which sounds an alarm when the carbon dioxide concentration exceeds the standard.

[0068] The above embodiment is further optimized, and the power module includes:

[0069] Batteries: provide power for portable devices;

[0070] Power Adapter: A device used to supply power from AC power.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A waste gas monitoring and collection and processing system for a ventilator, characterized in that: It includes a housing body and an exhaust gas collecting device, A housing body, wherein the housing body is provided with an input port connected to the ventilator and an output port connected to the exhaust gas collection device; the housing body is provided with a sensor module, a signal processing module, a control module, a display and alarm module, a communication module and a power supply module, and the sensor module is an infrared carbon dioxide sensor; The sensor module is connected to the signal processing module, the signal processing module is connected to the control module, and the control module is connected to the display and alarm module, the communication module and the power module; A bacteria filtering structure is also arranged in the containing body.

2. The exhaust gas monitoring and collection and processing system for a ventilator according to claim 1, characterized in that: It also includes a filter and a flow controller. The flow controller has a flow meter and an absorber. The filter is located at the input port of the containing body, and the output end of the filter is connected to the input end of the flow controller.

3. The exhaust gas monitoring and collection and processing system for a ventilator according to claim 1, characterized in that: The signal processing module includes an analog signal processing circuit, which is used to amplify and filter the analog signal output by the sensor; A / D converter, used to convert analog signals into digital signals.

4. The exhaust gas monitoring and collection and processing system for a ventilator according to claim 1, characterized in that: The control module includes: Microprocessor, responsible for data processing, analysis and control of the entire detection process; Memory: used to store detection data and system operation programs.

5. The exhaust gas monitoring and collection and processing system for a ventilator according to claim 1, characterized in that: The display and alarm module comprises: Display screen, used to display the carbon dioxide concentration value in real time; LED indicator light, used to indicate the working status of the device; Buzzer, which sounds an alarm when the carbon dioxide concentration exceeds the standard.

6. The exhaust gas monitoring and collection and processing system for a ventilator according to claim 1, characterized in that: The power module includes: Battery; Power Adapter: A device used for AC power supply.

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