Device for detecting breathing signal by using gas flow sensor

Abstract

The utility model discloses a device for detecting a breathing signal by using a gas flow sensor, which is characterized in that an oxygen source, an air source, a gas controller, the gas flow sensor, an oxygen inhaler, a driver and a control module are arranged in a matched manner, and the gas flow sensor is communicated with the air source through the gas controller when no oxygen is inhaled; when oxygen inhalation is needed, a user wears the oxygen inhalation device, the gas flow sensor detects an inhalation signal and then sends the inhalation signal to the control module, and the control module controls the gas controller to switch channels through the driver, so that the oxygen source is communicated with the gas controller, and oxygen supply is completed. The gas flow sensor can judge whether an oxygen inhaler inhales or exhales according to the flow direction, oxygen is accurately supplied, a peripheral circuit does not need to be used, and cost is effectively saved.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen concentrators, in particular to a device for detecting respiratory signals using a gas flow sensor. Background Art

[0002] Current oxygen concentrators determine whether to deliver oxygen based on whether the person is inhaling or exhaling. Therefore, a device that detects respiratory signals is required to determine whether oxygen is being supplied. Current respiratory signal detection devices typically consist of a pressure sensor and peripheral circuitry. Because inhalation creates negative pressure and exhalation creates positive pressure, pressure sensors can only determine pressure values ​​but cannot accurately determine whether the person is inhaling or exhaling. Therefore, a peripheral circuit consisting of components such as low-temperature drift resistors and operational amplifiers is required to determine whether oxygen is being inhaled or exhaled before oxygen delivery can begin, increasing the cost of the entire detection device. Utility Model Content

[0003] Based on this, it is necessary to provide a device for detecting respiratory signals using a gas flow sensor.

[0004] A device for detecting a respiratory signal using a gas flow sensor includes an oxygen source, an air source, a gas controller, a gas flow sensor, an oxygen absorber, a driver, a control module, and a power module. The oxygen source and the air source are respectively connected to the input end of the gas controller, the output end of the gas controller is connected to the input end of the gas flow sensor, the output end of the gas flow sensor is connected to the input end of the oxygen absorber, one end of the driver is electrically connected to the gas controller, and the other end is electrically connected to the control module. The power module provides electrical energy to the gas flow sensor, driver, and control module respectively.

[0005] In one embodiment, the air source includes an air tank, which is used to simulate a small air source environment to meet the lower limit requirement determined by the system.

[0006] In one embodiment, the gas controller includes a three-way valve, a first end of the three-way valve is connected to the oxygen source, a second end is connected to the air source, and a third end is connected to the gas flow sensor, and the driver is electrically connected to the three-way valve.

[0007] In one embodiment, the gas controller includes a three-way pipe and a pulse valve, one end of the pulse valve is connected to the oxygen source, and the other end is connected to the first end of the three-way pipe, the second end of the three-way pipe is connected to one end of the gas storage tank, and the third end of the three-way pipe is connected to the input end of the gas flow sensor, and the driver is electrically connected to the pulse valve.

[0008] In one embodiment, the control module includes a single chip microcomputer or an MCU.

[0009] In one embodiment, the model of the single chip microcomputer is one of AT89C5, AT89S51 or STC89C51.

[0010] The above-mentioned device for detecting respiratory signals using a gas flow sensor is configured through the coordinated arrangement of an oxygen source, an air source, a gas controller, a gas flow sensor, an oxygen inhaler, a driver, and a control module. When there is no oxygen inhalation, the gas flow sensor is connected to the air source through the gas controller; when oxygen inhalation is needed, the user wears the oxygen inhaler, and the gas flow sensor detects the inhalation signal and sends it to the control module. The control module controls the gas controller through the driver to switch the path, so that the oxygen source is connected to the gas controller to complete the oxygen supply. The gas flow sensor can determine whether the oxygen inhaler is inhaling or exhaling by the direction of the flow, and accurately supply oxygen without the use of peripheral circuits, effectively saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of a device for detecting respiratory signals using a gas flow sensor according to an embodiment of the present invention;

[0012] Figure 2 This is a structural diagram of a device for detecting respiratory signals using a gas flow sensor according to another embodiment of the present invention. DETAILED DESCRIPTION

[0013] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0014] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element. In contrast, when an element is said to be "directly" connected to another element, there are no intermediate elements.

[0015] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit this invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0016] like Figure 1 、 Figure 2 As shown, a device for detecting a respiratory signal using a gas flow sensor includes an oxygen source 1, an air source, a gas controller, a gas flow sensor 2, an oxygen absorber 3, a driver 4, a control module 5 and a power module 6. The oxygen source 1 and the air source are respectively connected to the input end of the gas controller, the output end of the gas controller is connected to the input end of the gas flow sensor 2, the output end of the gas flow sensor 2 is connected to the input end of the oxygen absorber 3, one end of the driver 4 is electrically connected to the gas controller, and the other end is electrically connected to the control module 5. The power module 6 provides power to the gas flow sensor 2, the driver 4 and the control module 5 respectively.

[0017] In one embodiment, the air source includes an air tank 7, which is used to simulate a small air source environment to meet the lower limit requirement determined by the system.

[0018] In one embodiment, the gas controller includes a three-way valve 81, a first end of the three-way valve 81 is connected to the oxygen source 1, a second end is connected to the air source, and a third end is connected to the gas flow sensor 2, and the driver 4 is electrically connected to the three-way valve 81.

[0019] In one embodiment, the gas controller includes a three-way pipe 82 and a pulse valve 83, one end of the pulse valve 83 is connected to the oxygen source 1, and the other end is connected to the first end of the three-way pipe 82, the second end of the three-way pipe 82 is connected to one end of the gas storage tank 7, the third end of the three-way pipe 82 is connected to the input end of the gas flow sensor 2, and the driver 4 is electrically connected to the pulse valve 83.

[0020] In one embodiment, the control module 6 includes a single chip microcomputer or an MCU.

[0021] In one embodiment, the model of the single chip microcomputer is one of AT89C5, AT89S51 or STC89C51.

[0022] The oxygen source 1 is used to provide oxygen; the air source is used to provide air; the air source can be directly from nature or a portion of the air can be stored in a gas tank 7; the gas controller is used to switch between the oxygen source 1 and the air source; the gas flow sensor 2 is used to detect the inhalation or exhalation signal of the oxygen inhaler; the oxygen inhaler 3 is used to connect to the oxygen mask worn by the oxygen inhaler; the driver 4 is used to drive the gas controller to switch between the oxygen source 1 and the air source, and the control module 5 includes one of a single-chip microcomputer or an MCU, which is used to control the driver 4 and receive the signal of the gas flow sensor 2; the power supply module 6 is used to supply power to the gas flow sensor 2, the driver 4, and the control module 5 respectively.

[0023] like Figure 1 As shown, in Example 1: the air source is nature, the gas controller includes a three-way valve 81, the first end of the three-way valve 81 is connected to the oxygen source 1, the second end is connected to the air source, the third end is connected to the gas flow sensor 2, and the driver 4 is electrically connected to the three-way valve 81.

[0024] When oxygen inhalation is not required, the air source is connected to the three-way valve 81 , the gas flow sensor 2 , and the oxygen inhaler 3 in sequence, and the gas flow sensor 2 sends the detected flow value to the control module 5 .

[0025] When oxygen inhalation is required, the oxygen inhaler puts on the oxygen inhaler 3 and inhales oxygen. The air in the air source sequentially passes through the three-way valve 81 and the gas flow sensor 2 into the oxygen inhaler 3. The gas flow sensor 2 detects the air flow value in real time and sends it to the control module 5. When the control module 5 determines that the air flow value exceeds a preset threshold, it sends a control signal to the three-way valve 81. The three-way valve 81 switches and connects with the oxygen source 1. The oxygen passes through the oxygen source 1, the three-way valve 81, and the gas flow sensor 2 and enters the oxygen inhaler 3 for the oxygen inhaler to inhale. After the oxygen inhalation reaches a preset time, the control module 5 controls the three-way valve 81 to switch and connect the three-way valve 81 with the air source. The air source is sequentially connected with the three-way valve 81, the gas flow sensor 2, and the oxygen inhaler 3.

[0026] like Figure 2 As shown in Example 2, the air source is a gas tank 7, which stores air. One end of a pulse valve 83 is connected to the oxygen source 1, and the other end is connected to the first end of a three-way pipe 82. The second end of the three-way pipe 82 is connected to one end of the gas tank 7, and the third end of the three-way pipe 82 is connected to the input end of the gas flow sensor 2. The driver 4 is electrically connected to the pulse valve 83.

[0027] When oxygen inhalation is not required, the gas storage tank 7 is connected to the three-way pipe 82 , the gas flow sensor 2 , and the oxygen inhaler 3 in sequence, and the gas flow sensor 2 sends the detected flow value to the control module 5 .

[0028] When oxygen inhalation is needed, the oxygen inhaler puts on the oxygen inhaler 3 and inhales oxygen. The air in the gas tank 7 enters the oxygen inhaler 3 in sequence through the three-way pipe 82 and the gas flow sensor 2. The gas flow sensor 2 detects the air flow value in real time and sends it to the control module 5. When the control module 5 determines that the air flow value exceeds a preset threshold, it sends a control signal to the pulse valve 83 to open the pulse valve 83. One end of the pulse valve 83 is connected to the oxygen source 1, so that oxygen enters the oxygen inhaler 3 in sequence through the oxygen source 1, the pulse valve 83, the three-way pipe 82, and the gas flow sensor 2 for the oxygen inhaler to inhale. After the oxygen inhalation reaches the preset time, the control module 5 controls the pulse valve 83 to disconnect, so that the three-way pipe 82 is connected to the gas tank 7, so that the gas tank 7 is connected to the three-way pipe 82, the gas flow sensor 2, and the oxygen inhaler 3 in sequence.

[0029] In this way, the device for detecting the respiratory signal by using the gas flow sensor is arranged in coordination with the oxygen source 1, the air source, the gas controller, the gas flow sensor 2, the oxygen absorber 3, the driver 4, and the control module 5. When there is no oxygen inhalation, the gas flow sensor 2 is connected to the air source through the gas controller; when oxygen inhalation is needed, the user wears the oxygen absorber, and the gas flow sensor 2 detects the inhalation signal and sends it to the control module 5. The control module controls the gas controller through the driver 4 to switch the path, so that the oxygen source is connected to the gas controller to complete the oxygen supply. The gas flow sensor can determine whether the oxygen absorber is inhaling or exhaling by the direction of the flow, and accurately supply oxygen without the need for peripheral circuits, effectively saving costs.

[0030] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A device for detecting a respiratory signal using a gas flow sensor, characterized in that: The invention comprises an oxygen source, an air source, a gas controller, a gas flow sensor, an oxygen absorber, a driver, a control module and a power module. The oxygen source and the air source are respectively connected to the input end of the gas controller, the output end of the gas controller is connected to the input end of the gas flow sensor, the output end of the gas flow sensor is connected to the input end of the oxygen absorber, one end of the driver is electrically connected to the gas controller, and the other end is electrically connected to the control module. The power module provides electrical energy to the gas flow sensor, the driver and the control module respectively.

2. The device for detecting a respiratory signal using a gas flow sensor according to claim 1, wherein: The air source includes an air storage tank, which is used to simulate a tiny air source environment to meet the lower limit requirement determined by the system.

3. The device for detecting a respiratory signal using a gas flow sensor according to claim 1, wherein: The gas controller includes a three-way valve, a first end of the three-way valve is connected to the oxygen source, a second end is connected to the air source, and a third end is connected to the gas flow sensor. The driver is electrically connected to the three-way valve.

4. The device for detecting a respiratory signal using a gas flow sensor according to claim 2, wherein: The gas controller includes a three-way pipe and a pulse valve, one end of the pulse valve is connected to the oxygen source, and the other end is connected to the first end of the three-way pipe, the second end of the three-way pipe is connected to one end of the gas storage tank, and the third end of the three-way pipe is connected to the input end of the gas flow sensor. The driver is electrically connected to the pulse valve.

5. The device for detecting a respiratory signal using a gas flow sensor according to claim 1, wherein: The control module includes a single chip microcomputer or an MCU.

6. The device for detecting respiratory signals using a gas flow sensor according to claim 5, characterized in that: The model of the single chip microcomputer is one of AT89C5, AT89S51 and STC89C51.

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