Oxygen inhalation machine, multi-item data synchronous detection system and detection method thereof

Abstract

This invention discloses an oxygen concentrator, a multi-data synchronous detection system, and a detection method for measuring the oxygen concentration and gas flow rate on the oxygen delivery pipeline of the oxygen concentrator. The system includes a mounting base, a concentration sensing unit, and a flow sensing unit. The mounting base is installed on the gas delivery pipeline of the oxygen concentrator and includes a main pipeline and a bypass pipeline. The concentration sensing unit is located inside the main pipeline, and the flow sensing unit is located inside the bypass pipeline. The bypass pipeline is located on one side of the main pipeline, allowing gas entering the main pipeline to be diverted to the bypass pipeline. This invention uses two sensors in parallel to reduce measurement errors caused by different detection sequences.

Description

Technical Field

[0001] This invention relates to the field of intelligent sensing technology, and more specifically, to an oxygen concentrator, a multi-data synchronous detection system, and a detection method thereof. Background Technology

[0002] Home oxygen concentrators or oxygen inhalers are devices that produce or deliver high-purity oxygen to the human body through chemical reactions or physical methods. They are generally used as an adjunct treatment for respiratory diseases caused by hypoxia or for the rapid relief of fatigue after intense mental or physical labor. However, the human body can experience negative effects from excessive oxygen intake or hypoxia. The amount of oxygen inhaled through an oxygen inhaler depends mainly on the oxygen concentration and gas flow rate in the oxygen delivery pipeline. Therefore, it is necessary to measure the oxygen concentration and gas flow rate in the oxygen inhaler's delivery pipeline.

[0003] In the existing technology, oxygen concentration sensors and gas flow sensors are installed in series in the oxygen delivery pipeline of the oxygen concentrator. The two sensors are located in different positions, and the two sets of sensors come into contact with the gas in sequence. After the gas reacts with the first sensor, the parameters change, which leads to the deviation of the measurement results of the subsequent sensor. In addition, the existing oxygen concentration sensors are all ultrasonic or electrochemical, which are costly. Summary of the Invention

[0004] One objective of this invention is to provide a system for simultaneous detection of multiple data points, which solves the technical problem of measurement errors when simultaneously measuring gas flow rate and gas concentration in the prior art; a second objective of this invention is to provide an oxygen concentrator; and a third objective of this invention is to provide a method for simultaneous detection of multiple data points.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0006] This invention provides a multi-data synchronous detection system for simultaneously and accurately measuring the gas concentration and gas flow rate on the gas delivery pipeline of an oxygen concentrator. The system includes a mounting base, a concentration sensing unit, and a flow sensing unit. The mounting base is disposed on the gas delivery pipeline of the oxygen concentrator and includes a main pipeline and a bypass pipeline. The concentration sensing unit is disposed within the main pipeline, and the flow sensing unit is disposed within the bypass pipeline. The bypass pipeline is located on one side of the main pipeline, allowing gas entering the main pipeline to be diverted to the bypass pipeline.

[0007] In the above-mentioned technical means, the detection system is installed on the gas delivery pipeline of the oxygen concentrator through the mounting bracket. The concentration sensing unit is set in the main pipeline and the flow sensing unit is set in the bypass pipeline. This parallel setting of sensors allows the two sets of sensors to contact the gas with the same parameters simultaneously and independently. This solves the technical problem that when oxygen concentration sensors and gas flow sensors are set in series, the gas parameters change after the first sensor reacts with the gas, resulting in the measurement results of the subsequent sensor being biased.

[0008] Furthermore, the distances of the concentration sensing unit and the flow sensing unit from the branching points of the main pipeline and the bypass pipeline are L1 and L2, respectively, where L1 and L2 are equal. This arrangement ensures that the two sets of sensors can simultaneously and independently contact the gas with the same parameters.

[0009] Furthermore, both the flow sensing unit and the concentration sensing unit are thermal sensors, which are less expensive than existing ultrasonic or electrochemical flow sensors and oxygen concentration sensors.

[0010] Furthermore, the concentration sensing unit includes a first thermistor and a gas chamber. The gas chamber is disposed on the inner wall of the main pipe, and the end of the gas chamber extends to the inner side of the main pipe. The gas chamber has a receiving cavity formed therein for accommodating the first thermistor. The gas chamber is provided with a gas hole for gas to pass through, and the gas hole connects the receiving cavity and the main pipe.

[0011] Furthermore, the inner wall of the main pipe away from the concentration sensing unit is recessed into the inner side of the main pipe to form a guide convex edge, so that the outer wall of the mounting base is formed with an air-proof groove for the air-proof gas transmission pipeline diversion ring.

[0012] Furthermore, the flow sensing unit includes a second thermistor and a connector. The connector is disposed on the inner wall of the bypass pipe, and the end of the connector extends to the inner side of the bypass pipe. The second thermistor is disposed at the end of the connector away from the inner wall of the bypass pipe.

[0013] Furthermore, the connecting seat is disposed within the mounting base and divides the interior of the mounting base into the main pipe and the bypass pipe. The main pipe and the bypass pipe are tightly fitted together through the connecting seat. The first thermistor and the second thermistor are respectively disposed on two sets of opposite end faces of the connecting seat. The connecting seat is provided with a heating module for heating the first thermistor and the second thermistor.

[0014] Furthermore, both the flow sensing unit and the concentration sensing unit are fabricated using MEMS technology.

[0015] A second aspect of the present invention provides an oxygen concentrator, including the aforementioned multiple data synchronization detection system.

[0016] A third aspect of the present invention provides a detection method, which is executed by the aforementioned multiple data synchronization detection system, comprising the following steps:

[0017] S100: The mounting base is placed on the air supply pipe of the oxygen concentrator, so that the gas in the air supply pipe of the oxygen concentrator flows into the main pipe;

[0018] S200: The gas flowing into the main pipeline is split into two parts, one part flows into the bypass pipeline, and the other part continues to flow in the main pipeline. The two parts of gas do not interfere with each other.

[0019] S200: The concentration sensing unit acquires the gas concentration of the gas continuing to flow in the main pipeline, while the flow sensing unit acquires the gas flow rate of the gas flowing into the bypass pipeline, thus obtaining synchronously detected gas concentration and gas flow rate data.

[0020] Compared with the prior art, the beneficial effects of the technical solution of the present invention are:

[0021] In the various data monitoring systems, oxygen concentrators, and detection methods provided by this invention, two sensors are set up through parallel flow channels, so that the two sets of sensors can independently and simultaneously contact and measure gases with almost the same parameters, thereby reducing measurement errors caused by different detection sequences. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a multi-data synchronization detection system provided in an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the concentration sensing unit and the flow sensing unit provided in the embodiments of the present invention;

[0024] Figure 3 This is a schematic diagram illustrating the working principle of the multiple data synchronization detection system provided in this embodiment of the invention.

[0025] Figure 4 This is a schematic diagram of the guide flange of the multi-data synchronization detection system provided in an embodiment of the present invention.

[0026] Figure 5 This is a schematic flowchart of a method for simultaneously measuring oxygen concentration and gas flow rate according to an embodiment of the present invention;

[0027] In the diagram, 1 is the mounting base, 2 is the main pipe, 3 is the bypass pipe, 4 is the concentration sensing unit, 41 is the first thermistor, 42 is the gas chamber, 421 is the receiving cavity, 422 is the air hole, 5 is the flow sensing unit, 51 is the second thermistor, 52 is the connecting base, 6 is the guide flange, 7 is the anti-cavity groove, and 8 is the heating module. Detailed Implementation

[0028] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent.

[0029] To better illustrate this embodiment, some parts in the accompanying drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions;

[0030] It will be understood by those skilled in the art that certain well-known structures and their descriptions may be omitted in the accompanying drawings.

[0031] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0032] Example 1

[0033] This invention provides a multi-data synchronization detection system, such as... Figures 1-3 As shown, it includes a mounting base 1, a concentration sensing unit 4, and a flow sensing unit 5; the mounting base 1 is installed on the gas delivery pipe of the oxygen concentrator, and the mounting base 1 is provided with a main pipe 2 and a bypass pipe 3; the concentration sensing unit 4 is installed in the main pipe 2; the flow sensing unit 5 is installed in the bypass pipe 3; wherein, the bypass pipe 3 is located on one side of the main pipe 2, and the gas entering the main pipe 2 can be diverted to the bypass pipe 3.

[0034] In this embodiment, a concentration sensing unit is installed in the main pipeline and a flow sensing unit is installed in the bypass pipeline. This parallel sensor arrangement allows the two sets of sensors to contact the gas with almost identical parameters simultaneously and independently. This solves the technical problem in the series arrangement of gas concentration and flow sensors, where the gas parameters change after the first sensor reacts with the gas, causing deviations in the measurement results of the subsequent sensor.

[0035] Example 2

[0036] This invention provides a multi-data synchronization detection system, such as... Figures 1-3As shown, it includes: a mounting base 1, a concentration sensing unit 4, and a flow sensing unit 5. The mounting base 1 is installed on the gas delivery pipe of the oxygen concentrator. The mounting base 1 is provided with a main pipe 2 and a bypass pipe 3. The concentration sensing unit 4 is installed in the main pipe 2. The flow sensing unit 5 is installed in the bypass pipe 3. The bypass pipe 3 is located on one side of the main pipe 2, and the gas entering the main pipe 2 can be diverted to the bypass pipe 3.

[0037] In this embodiment, a concentration sensing unit is installed in the main pipeline and a flow sensing unit is installed in the bypass pipeline. This parallel sensor arrangement allows two sets of sensors to contact the gas with the same parameters simultaneously and independently. This solves the technical problem that when the gas flow sensor is connected in series, the gas parameters change after the first sensor reacts with the gas, causing the measurement results of the subsequent sensor to be biased.

[0038] In a further embodiment, the distances of the concentration sensing unit 4 and the flow sensing unit 5 from the branching positions of the main pipe 2 and the bypass pipe 3 are L1 and L2, respectively, wherein L1 and L2 are equal.

[0039] In a further embodiment, both the flow sensor unit 5 and the concentration sensor unit 4 are thermal sensors, which are less expensive than existing ultrasonic or electrochemical flow sensors and oxygen concentration sensors.

[0040] In a further embodiment, the concentration sensing unit 4 includes a first thermistor 41 and a gas chamber 42. The gas chamber 42 is disposed on the inner wall of the main pipe 2, and the end of the gas chamber 42 extends to the inner side of the main pipe 2. The gas chamber 42 has a receiving cavity 421 formed therein for accommodating the first thermistor 41. The gas chamber 42 is provided with a gas hole 422 for gas to pass through, and the gas hole 422 connects the receiving cavity 421 and the main pipe 2.

[0041] In this embodiment, the principle of measuring gas concentration using the first thermistor 41 and the gas chamber 42 is as follows:

[0042] The air chamber 42 has an air hole 422 that connects the receiving cavity 421 within the air chamber 42 to the main pipe 2. Gas from the main pipe 2 enters the receiving cavity 421 of the air chamber 42. Since the receiving cavity 421 is a "quasi-closed space" with only one air hole 422 for air intake, the gas flow is greatly reduced, becoming almost static. At this time, the first thermistor 41 exchanges heat with the gas, causing a change in its temperature. The resistance of the thermistor 41 changes accordingly. At this time, the gas in the cavity 421 is approximately stationary, and the gas flow will not affect the heat exchange rate between the gas and the first thermistor 41. Furthermore, since the heat exchange rate between the first thermistor 41 and different gas concentrations varies, the heat exchange rate between the first thermistor 41 and the gas depends only on the gas concentration and is independent of the gas flow rate. Therefore, by pre-calibrating the relationship between the resistance of the first thermistor 41 and different gas concentrations, a first thermistor 41 for measuring gas concentration can be obtained. Moreover, due to the presence of the vent 422, the heat from the gas in the cavity 421 can be released through free diffusion, thereby reducing the measurement error of the first thermistor 41.

[0043] like Figure 4 As shown, in a further embodiment, the inner wall of the main pipe 2, away from the concentration sensing unit 4, is recessed into the inner side of the main pipe 2 to form a guide flange 6, so that the outer wall of the mounting base 1 is formed with a venting groove 7 for a gas diversion ring for venting the gas transmission pipeline. In this embodiment, the guide flange 6 is used to block part of the gas flowing in the main pipe 2, so that the gas can be smoothly diverted to the bypass pipe 3, realizing parallel gas transmission of the two pipes, and ensuring that the gas in contact with the flow sensing unit 5 and the gas in contact with the concentration sensing unit 4 do not interfere with each other. In a further embodiment, the flow sensing unit 5 includes a second thermistor 51 and a connecting seat 52. The connecting seat 52 is disposed on the inner wall of the bypass pipe 3, and the end of the connecting seat 52 extends to the inner side of the bypass pipe 3. The second thermistor 51 is disposed at the end of the connecting seat 52 away from the inner wall of the bypass pipe 3.

[0044] In this embodiment, the principle of measuring gas flow rate using the second thermistor 51 is as follows:

[0045] The second thermistor 51 is disposed in the bypass pipe 3 and is in direct contact with the gas in the bypass pipe 3. At this time, the gas in the bypass pipe 3 has fluidity and carries away the heat on the second thermistor 51, thereby affecting the resistance value of the second thermistor 51. Moreover, the ability to carry away heat is different for different gas flow rates. Therefore, the first thermistor 41 for measuring gas flow rate can be obtained in advance by calibrating the relationship between the resistance of the second thermistor 51 and different gas flow rates.

[0046] In this embodiment, the detection effect can also be improved by increasing the contact area of ​​the second thermistor 51 with the gas. Optionally, the second thermistor 51 is a film structure, and increasing the area of ​​the film can increase the contact area of ​​the second thermistor 51 with the gas.

[0047] In a further embodiment, both the flow sensing unit 5 and the concentration sensing unit 4 are fabricated using MEMS technology. In a further embodiment, the connecting seat 52 is disposed within the mounting base 1 and divides the interior of the mounting base 1 to form the main pipe 2 and the bypass pipe 3. The main pipe 2 and the bypass pipe 3 are tightly fitted together through the connecting seat 52. The first thermistor 41 and the second thermistor 51 are respectively disposed on two sets of opposite end faces of the connecting seat 52. A heating module 8 for heating the first thermistor 41 and the second thermistor 51 is provided on the connecting seat 52.

[0048] In this embodiment, the connector 52 helps to optimize the space ratio of the overall detection system. At the same time, the unit drives dual thermistors to reduce power consumption. The connector 52 is composed of thermally conductive materials, including but not limited to thermally conductive pads, phase change thermally conductive materials, and thermally conductive potting compound.

[0049] Example 3

[0050] like Figure 5 As shown, this embodiment provides a detection method, which is executed by the multi-data synchronization detection system described in Embodiments 1 and 2, and includes the following steps:

[0051] S100: The mounting base 1 is placed on the air supply pipe of the oxygen concentrator, so that the gas in the air supply pipe of the oxygen concentrator flows into the main pipe 2;

[0052] S200: The gas flowing into the main pipe 2 is split into two parts, one part flows into the bypass pipe 3, and the other part continues to flow in the main pipe 2. The two parts of gas do not interfere with each other.

[0053] S300: The concentration sensing unit 4 acquires the gas concentration of the gas continuing to flow in the main pipe 2, and at the same time, the flow sensing unit acquires the gas flow rate of the gas flowing into the bypass pipe 3, thereby obtaining synchronously detected gas concentration and gas flow rate data.

[0054] Example 4

[0055] This embodiment provides an oxygen inhaler, including the multiple data synchronous detection system described in Embodiments 2 and 1.

[0056] The same or similar labels correspond to the same or similar parts;

[0057] The terms used to describe positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0058] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A multi-item data synchronization detection system, characterized by, include: Mounting base (1), which is installed on the gas supply pipe of the oxygen inhaler, and the mounting base (1) is provided with a main pipe (2) and a bypass pipe (3). A concentration sensing unit (4) is disposed inside the main pipe (2); A flow sensing unit (5) is disposed inside the bypass pipe (3); The bypass pipe (3) is located on one side of the main pipe (2), and the gas entering the main pipe (2) can be diverted to the bypass pipe (3); The distances of the concentration sensing unit (4) and the flow sensing unit (5) from the branching positions of the main pipeline (2) and the bypass pipeline (3) are L1 and L2, respectively, where L1 and L2 are equal. Both the flow sensing unit (5) and the concentration sensing unit (4) are thermal sensors.

2. The multi-item data synchronization detection system of claim 1, wherein, The concentration sensing unit (4) includes a first thermistor (41) and a gas chamber (42). The gas chamber (42) is disposed on the inner wall of the main pipe (2). The end of the gas chamber (42) extends to the inner side of the main pipe (2). A receiving cavity (421) for accommodating the first thermistor (41) is formed in the gas chamber (42). The gas chamber (42) is provided with a gas hole (422) for gas to pass through. The gas hole (422) connects the receiving cavity (421) and the main pipe (2).

3. The multi-item data synchronization detection system of claim 1, wherein, The inner wall of the main pipe (2) away from the concentration sensing unit (4) is recessed into the inner side of the main pipe (2) to form a guide convex edge (6), so that the outer wall of the mounting base (1) is formed with an air-proof groove (7) for the air-proof gas transmission pipeline diversion ring.

4. The multi-item data synchronization detection system of claim 2, wherein, The flow sensing unit (5) includes a second thermistor (51) and a connector (52). The connector (52) is disposed on the inner wall of the bypass pipe (3), and the end of the connector (52) extends to the inner side of the bypass pipe (3). The second thermistor (51) is disposed at the end of the connector (52) away from the inner wall of the bypass pipe (3).

5. The multiple data synchronization detection system according to claim 4, characterized in that: The connecting seat (52) is disposed inside the mounting seat (1) and divides the interior of the mounting seat (1) to form the main pipe (2) and the bypass pipe (3). The main pipe (2) and the bypass pipe (3) are tightly fitted together through the connecting seat (52). The first thermistor (41) and the second thermistor (51) are respectively disposed on two sets of opposite end faces of the connecting seat (52). The connecting seat (52) is provided with a heating module (8) for simultaneously heating the first thermistor (41) and the second thermistor (51).

6. The multi-item data synchronization detection system of any one of claims 1 to 5, wherein, Both the flow sensing unit (5) and the concentration sensing unit (4) are manufactured using MEMS technology.

7. An oxygen inhalation machine characterized by: Includes the multi-data synchronization detection system as described in any one of claims 1 to 6.

8. A method of detection, characterized in that The detection method is performed by the multi-data synchronization detection system according to any one of claims 1 to 6, and includes the following steps: S100: The mounting base (1) is placed on the gas delivery pipe of the oxygen concentrator, so that the gas in the gas delivery pipe of the oxygen concentrator flows into the main pipe (2). S200: The gas flowing into the main pipe (2) is split into two parts, one part flows into the bypass pipe (3), and the other part continues to flow in the main pipe (2). The two parts of gas do not interfere with each other. S300: The concentration sensing unit (4) acquires the gas concentration of the gas continuing to flow in the main pipe (2), and at the same time the flow sensing unit acquires the gas flow rate of the gas flowing into the bypass pipe (3), thereby obtaining synchronously detected gas concentration and gas flow rate data.

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