Device for reducing interference respiration detection signals

Abstract

The utility model relates to a device for reducing interference respiration detection signals. The device for reducing the interference respiration detection signals comprises an oxygen source, a three-way valve, a respiration pressure sensor, an oxygen inhaler, a single chip microcomputer and a driver. The three-way valve is connected with an oxygen source through a first connector, connected with an oxygen inhaler through a second connector and connected with a breathing pressure sensor through a third connector. The single chip microcomputer is electrically connected with the breathing pressure sensor and the driver, and the driver is electrically connected with the three-way valve; the breathing pressure sensor is used for sending a real-time breathing pressure value to the single chip microcomputer; the single chip microcomputer is used for sending a control instruction to the driver according to the real-time breathing pressure value; the driver is used for sending an interface switching instruction to the three-way valve according to the control instruction; the three-way valve is used for opening and closing the interface according to the interface switching instruction. According to the device for reducing the interference respiration detection signal, the working point of the respiration pressure sensor can be prevented from deviating, and the acquisition precision of the respiration detection signal is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of breathing detection, in particular to a device for reducing interference with breathing detection signals. Background Art

[0002] Oxygen is widely used in the treatment of hypoxia caused by various reasons. It can relieve and treat hypoxia and plays a very important role in modern medicine. In special cases, the supply of oxygen is limited and needs to be used efficiently, such as supplying oxygen when people inhale and stopping oxygen supply when people exhale, which can reduce waste and improve oxygen utilization.

[0003] In the related art, a respiratory signal is detected by a respiratory pressure sensor. When the respiratory pressure sensor detects a respiratory signal, a control signal is sent to a two-way valve. The two-way valve conducts the pipeline between the oxygen source and the oxygen absorber according to the control signal, thereby achieving oxygen absorption. However, since the respiratory pressure sensor is connected to the pipeline of the oxygen absorber, when oxygen is transported from the oxygen source to the oxygen absorber, the respiratory pressure sensor is interfered by the instantaneous high pressure, causing the stress sheet of the respiratory pressure sensor to be overloaded, the working point to be offset, and the accuracy of respiratory signal acquisition to decrease. Utility Model Content

[0004] Based on this, it is necessary to provide a device for reducing interference with respiratory detection signals to address the problem that the stress sheet of the respiratory pressure sensor is overloaded, the working point is offset, and the accuracy of respiratory signal acquisition is reduced.

[0005] A device for reducing interference with a respiratory detection signal, comprising an oxygen source, a three-way valve, a respiratory pressure sensor, an oxygen absorber, a single-chip microcomputer and a driver;

[0006] The three-way valve comprises a first interface, a second interface and a third interface, and is connected to the oxygen source through the first interface, connected to the oxygen absorber through the second interface, and connected to the respiratory pressure sensor through the third interface;

[0007] The single chip microcomputer is electrically connected to the respiratory pressure sensor and the driver respectively, and the driver is electrically connected to the three-way valve;

[0008] The respiratory pressure sensor is used to measure the real-time respiratory pressure value when the three-way valve closes the first interface and connects the second interface and the third interface, and send the real-time respiratory pressure value to the single chip microcomputer;

[0009] The single chip microcomputer is used to receive the real-time respiratory pressure value, and when the real-time respiratory pressure value meets the trigger condition, send a control instruction to the driver;

[0010] The driver is used to receive the control instruction and send a switching interface instruction to the three-way valve according to the control instruction;

[0011] The three-way valve is used to connect the first interface and the second interface and close the third interface according to the interface switching instruction within a preset time period, and to connect the second interface and the third interface and close the first interface when the preset time period is reached.

[0012] The above-mentioned device for reducing interference with respiratory detection signals includes an oxygen source, a three-way valve, a respiratory pressure sensor, an oxygen absorber, a single-chip microcomputer and a driver. The three-way valve includes a first interface, a second interface and a third interface, and is connected to the oxygen source through the first interface, to the oxygen absorber through the second interface, and to the respiratory pressure sensor through the third interface; the single-chip microcomputer is electrically connected to the respiratory pressure sensor and the driver respectively, and the driver is electrically connected to the three-way valve; the respiratory pressure sensor is used to measure the real-time respiratory pressure value when the three-way valve closes the first interface and connects the second interface and the third interface, and sends the real-time respiratory pressure value to the single-chip microcomputer; the single-chip microcomputer is used to receive the real-time respiratory pressure value, and when the real-time respiratory pressure value meets the trigger condition, send a control instruction to the driver; the driver is used to receive the control instruction and send a switching interface instruction to the three-way valve according to the control instruction; the three-way valve is used to connect the first interface and the second interface and close the third interface according to the switching interface instruction within a preset time length, and connect the second interface and the third interface and close the first interface when the preset time length is reached. It can be seen that when the oxygen source delivers oxygen to the oxygen absorber, the three-way valve connects the first interface and the second interface and closes the third interface, and when the respiratory pressure sensor measures the real-time respiratory pressure value, the three-way valve connects the second interface and the third interface and closes the first interface. By controlling the opening and closing of the first interface, the second interface and the third interface by the three-way valve, the oxygen source and the respiratory pressure sensor can be effectively isolated, so that the respiratory pressure sensor will not be disturbed by the instantaneous high pressure of the oxygen source, thereby avoiding the problem of decreased accuracy of respiratory detection signal acquisition due to overload of the stress sheet of the respiratory pressure sensor and offset of the working point.

[0013] In one embodiment, the single chip microcomputer includes a pressure determination module and a comparison module, the pressure determination module is connected to the respiratory pressure sensor and the comparison module respectively, and the comparison module is connected to the driver;

[0014] The pressure determination module is used to obtain the real-time respiratory pressure value sent by the respiratory pressure sensor, and send the real-time respiratory pressure value to the comparison module;

[0015] The comparison module is used to send a control instruction to the driver when the difference between the reference comparison pressure value and the real-time breathing pressure value is equal to a preset difference threshold.

[0016] In one of the embodiments, the single chip microcomputer further includes a sensitivity adjustment module, and the sensitivity adjustment module is connected to the comparison module;

[0017] The sensitivity adjustment module is used to adjust the preset difference threshold and send the adjusted preset difference threshold to the comparison module;

[0018] The comparison module is further configured to send a control instruction to the driver according to the adjusted preset difference threshold.

[0019] In one of the embodiments, the single chip microcomputer further includes a duration adjustment module, and the duration adjustment module is connected to the comparison module;

[0020] The duration adjustment module is used to adjust the preset duration and send the adjusted preset duration to the comparison module;

[0021] The comparison module is also used to send a control instruction to the driver according to the adjusted preset duration;

[0022] The three-way valve is also used to switch interfaces according to the adjusted preset time length.

[0023] In one embodiment, the device for reducing interference with the respiratory detection signal further includes a working power supply, and the working power supply is respectively connected to the respiratory pressure sensor, the single chip microcomputer and the driver;

[0024] The working power supply is used to provide working voltage for the respiratory pressure sensor, the single chip microcomputer and the driver respectively.

[0025] In one embodiment, the oxygen source includes a fourth interface, and the fourth interface is connected to the first interface.

[0026] In one embodiment, the oxygen absorber includes a fifth interface, and the fifth interface is connected to the second interface.

[0027] In one embodiment, the respiratory pressure sensor includes a sixth interface, and the sixth interface is connected to the third interface. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of a device for reducing interference with a breathing detection signal according to an embodiment of the utility model;

[0029] Figure 2 for Figure 1 A schematic diagram of the structure of a single chip microcomputer in a device for reducing interference with a breathing detection signal is shown;

[0030] Among them, 10 is the first interface, 20 is the second interface, 30 is the third interface, 40 is the fourth interface, 50 is the fifth interface, and 60 is the sixth interface. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only."

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0034] The utility model discloses a device for reducing interference with a breathing detection signal.

[0035] like Figure 1 to Figure 2 As shown, the device for reducing interference with respiratory detection signals includes an oxygen source, a three-way valve, a respiratory pressure sensor, an oxygen absorber, a single-chip microcomputer and a driver. The oxygen source is used to provide oxygen with a certain air pressure, the three-way valve is used to switch interfaces, the respiratory pressure sensor is used to measure the real-time respiratory pressure value, the oxygen absorber is used to supply oxygen to the user, the single-chip microcomputer is used to process signals, and the driver is used to drive the three-way valve to switch interfaces.

[0036] The three-way valve includes a first interface 10, a second interface 20 and a third interface 30, and is connected to an oxygen source through the first interface 10, to an oxygen absorber through the second interface 20, and to a respiratory pressure sensor through the third interface 30; the single-chip microcomputer is electrically connected to the respiratory pressure sensor and the driver, respectively, and the driver is electrically connected to the three-way valve.

[0037] The respiratory pressure sensor is used to measure the real-time respiratory pressure value when the three-way valve closes the first interface 10 and connects the second interface 20 and the third interface 30, and sends the real-time respiratory pressure value to the single-chip microcomputer. The single-chip microcomputer is used to receive the real-time respiratory pressure value, and when the real-time respiratory pressure value meets the trigger condition, it sends a control instruction to the driver. The driver is used to receive the control instruction and send a switching interface instruction to the three-way valve according to the control instruction. The three-way valve is used to connect the first interface 10 and the second interface 20 and close the third interface 30 according to the switching interface instruction within a preset time length, and connect the second interface 20 and the third interface 30 and close the first interface 10 when the preset time length is reached.

[0038] The device for reducing interference with respiratory detection signals comprises an oxygen source, a three-way valve, a respiratory pressure sensor, an oxygen absorber, a single chip microcomputer and a driver. The three-way valve includes a first interface 10, a second interface 20 and a third interface 30, and is connected to an oxygen source through the first interface 10, to an oxygen absorber through the second interface 20, and to a respiratory pressure sensor through the third interface 30; the single-chip microcomputer is electrically connected to the respiratory pressure sensor and the driver respectively, and the driver is electrically connected to the three-way valve; the respiratory pressure sensor is used to measure the real-time respiratory pressure value and send the real-time respiratory pressure value to the single-chip microcomputer when the three-way valve closes the first interface 10 and connects the second interface 20 and the third interface 30; the single-chip microcomputer is used to receive the real-time respiratory pressure value, and when the real-time respiratory pressure value meets the trigger condition, send a control instruction to the driver; the driver is used to receive the control instruction and send a switching interface instruction to the three-way valve according to the control instruction; the three-way valve is used to connect the first interface 10 and the second interface 20 and close the third interface 30 according to the switching interface instruction within a preset time length, and connect the second interface 20 and the third interface 30 and close the first interface 10 when the preset time length is reached. It can be seen that when the oxygen source delivers oxygen to the oxygen absorber, the three-way valve connects the first interface 10 and the second interface 20 and closes the third interface 30. When the respiratory pressure sensor measures the real-time respiratory pressure value, the three-way valve connects the second interface 20 and the third interface 30 and closes the first interface 10. By controlling the opening and closing of the first interface 10, the second interface 20 and the third interface 30 by the three-way valve, the oxygen source and the respiratory pressure sensor can be effectively isolated, so that the respiratory pressure sensor will not be affected by the instantaneous high pressure of the oxygen source, thereby avoiding the problem of decreased acquisition accuracy of the respiratory detection signal due to overload of the stress sheet of the respiratory pressure sensor and offset of the working point.

[0039] Among them, the single-chip microcomputer includes a pressure determination module and a comparison module, the pressure determination module is connected to the respiratory pressure sensor and the comparison module respectively, and the comparison module is connected to the driver. The pressure determination module is used to obtain the real-time respiratory pressure value sent by the respiratory pressure sensor and send the real-time respiratory pressure value to the comparison module. The comparison module is used to send a control instruction to the driver when the difference between the reference comparison pressure value and the real-time respiratory pressure value is equal to a preset difference threshold. Through the mutual cooperation of the pressure determination module and the comparison module, the single-chip microcomputer can obtain the real-time respiratory pressure value and send a control instruction to the driver in real time.

[0040] Furthermore, the single chip microcomputer also includes a sensitivity adjustment module, and the sensitivity adjustment module is connected to the comparison module. The sensitivity adjustment module is used to adjust the preset difference threshold value, and send the adjusted preset difference threshold value to the comparison module. The comparison module is also used to send a control instruction to the driver according to the adjusted preset difference threshold value. By adjusting the preset difference threshold value through the sensitivity adjustment module, it is convenient for users to optimize the sensitivity of the device for reducing interference with the breathing detection signal according to actual needs.

[0041] Furthermore, the single chip microcomputer also includes a duration adjustment module, and the duration adjustment module is connected to the comparison module. The duration adjustment module is used to adjust the preset duration and send the adjusted preset duration to the comparison module. The comparison module is also used to send a control instruction to the driver according to the adjusted preset duration; the three-way valve is also used to switch the interface according to the adjusted preset duration. By adjusting the preset duration through the duration adjustment module, the oxygen supply time of the oxygen source to the oxygen absorber can be extended or shortened according to actual needs, thereby improving the working flexibility of the device for reducing interference with the respiratory detection signal.

[0042] The device for reducing interference with the respiratory detection signal also includes a working power supply, which is connected to the respiratory pressure sensor, the single-chip microcomputer and the driver respectively; the working power supply is used to provide working voltages for the respiratory pressure sensor, the single-chip microcomputer and the driver respectively. By providing working voltages for the respiratory pressure sensor, the single-chip microcomputer and the driver respectively, the power supply stability of the device for reducing interference with the respiratory detection signal can be improved.

[0043] The oxygen source includes a fourth interface 40, and the fourth interface 40 is connected to the first interface 10. By connecting the fourth interface 40 to the first interface 10, the three-way valve can flexibly control the gas supply of the oxygen source.

[0044] The oxygen absorber includes a fifth interface 50, which is connected to the second interface 20. The fifth interface 50 is connected to the second interface 20, so that the three-way valve can flexibly switch the interface connected to the oxygen absorber.

[0045] The respiratory pressure sensor includes a sixth interface 60, which is connected to the third interface 30. The sixth interface 60 is connected to the third interface 30, so that the three-way valve can isolate the respiratory pressure sensor when the oxygen source supplies oxygen to the oxygen absorber to prevent the respiratory pressure sensor from shifting its working point.

[0046] The utility model also discloses a working method of a device for reducing interference with a breathing detection signal, which is applied to the above-mentioned device for reducing interference with a breathing detection signal. The working method of the device for reducing interference with a breathing detection signal includes:

[0047] The three-way valve closes the first interface 10 and connects the second interface 20 and the third interface 30;

[0048] The respiratory pressure sensor measures a real-time respiratory pressure value and sends the real-time respiratory pressure value to the pressure determination module;

[0049] The pressure determination module sends the real-time respiratory pressure value to the comparison module;

[0050] The comparison module receives the real-time respiratory pressure value sent by the pressure determination module, and sends a control instruction to the driver when the difference between the reference comparison pressure value and the real-time respiratory pressure value is equal to a preset difference threshold;

[0051] The driver receives the control instruction, and sends a switching interface instruction to the three-way valve according to the control instruction;

[0052] Within a preset time period, the three-way valve connects the first interface 10 and the second interface 20 and closes the third interface 30 according to the interface switching instruction;

[0053] When the preset time is reached, the three-way valve connects the second interface 20 and the third interface 30 and closes the first interface 10;

[0054] When the three-way valve conducts the first interface 10 and the second interface 20 and closes the third interface 30, the respiratory pressure sensor measures the free state pressure and sends the free state pressure to the pressure determination module; the pressure determination module determines the free state pressure sent by the respiratory pressure sensor as the updated reference comparison pressure value, and sends the updated reference comparison pressure value to the comparison module;

[0055] When the three-way valve connects the second interface 20 and the third interface 30 and closes the first interface 10 , the comparison module sends a control instruction to the driver according to the updated reference comparison pressure value.

[0056] In the working method of the above-mentioned device for reducing interference with respiratory detection signals, when the three-way valve closes the first interface 10 and connects the second interface 20 and the third interface 30, the respiratory pressure sensor measures the real-time respiratory pressure value and sends the real-time respiratory pressure value to the pressure determination module; the pressure determination module sends the real-time respiratory pressure value to the comparison module; the comparison module receives the real-time respiratory pressure value sent by the pressure determination module, and when the difference between the reference comparison pressure value and the real-time respiratory pressure value is equal to the preset difference threshold, sends a control instruction to the driver; the driver receives the control instruction and sends an interface switching instruction to the three-way valve according to the control instruction; the three-way valve switches according to the preset time length. The switching interface instruction connects the first interface 10 and the second interface 20 and closes the third interface 30, and when the preset time is reached, the second interface 20 and the third interface 30 are connected and the first interface 10 is closed; when the three-way valve connects the first interface 10 and the second interface 20 and closes the third interface 30, the respiratory pressure sensor measures the free state pressure and sends the free state pressure to the pressure determination module; the pressure determination module determines the free state pressure sent by the respiratory pressure sensor as the updated reference comparison pressure value, and sends the updated reference comparison pressure value to the comparison module; the comparison module sends a control instruction to the driver according to the updated reference comparison pressure value. It can be seen that as the oxygen source periodically delivers oxygen to the oxygen absorber, the respiratory pressure sensor can periodically measure the free state pressure, the pressure determination module can determine the free state pressure as the updated reference comparison pressure value, and the comparison module can send a control instruction to the driver according to the updated reference comparison pressure value. Since the reference comparison pressure value can be updated periodically, the comparison module can send control instructions to the driver based on a more accurate reference comparison pressure value, thereby preventing air pressure disturbances from affecting the operation of the device for reducing interference with the breathing detection signal, thereby further improving the operating accuracy of the device for reducing interference with the breathing detection signal.

[0057] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A device for reducing interference with a breathing detection signal, characterized in that: It includes oxygen source, three-way valve, respiratory pressure sensor, oxygen absorber, single chip microcomputer and driver; The three-way valve comprises a first interface, a second interface and a third interface, and is connected to the oxygen source through the first interface, connected to the oxygen absorber through the second interface, and connected to the respiratory pressure sensor through the third interface; The single chip microcomputer is electrically connected to the respiratory pressure sensor and the driver respectively, and the driver is electrically connected to the three-way valve; The respiratory pressure sensor is used to measure the real-time respiratory pressure value when the three-way valve closes the first interface and connects the second interface and the third interface, and send the real-time respiratory pressure value to the single chip microcomputer; The single chip microcomputer is used to receive the real-time respiratory pressure value, and when the real-time respiratory pressure value meets the trigger condition, send a control instruction to the driver; The driver is used to receive the control instruction and send a switching interface instruction to the three-way valve according to the control instruction; The three-way valve is used to connect the first interface and the second interface and close the third interface according to the interface switching instruction within a preset time period, and to connect the second interface and the third interface and close the first interface when the preset time period is reached.

2. The device for reducing interference with breathing detection signals according to claim 1, characterized in that: The single chip microcomputer comprises a pressure determination module and a comparison module, the pressure determination module is respectively connected to the respiratory pressure sensor and the comparison module, and the comparison module is connected to the driver; The pressure determination module is used to obtain the real-time respiratory pressure value sent by the respiratory pressure sensor, and send the real-time respiratory pressure value to the comparison module; The comparison module is used to send a control instruction to the driver when the difference between the reference comparison pressure value and the real-time breathing pressure value is equal to a preset difference threshold.

3. The device for reducing interference with breathing detection signals according to claim 2, characterized in that: The single chip microcomputer further comprises a sensitivity adjustment module, and the sensitivity adjustment module is connected to the comparison module; The sensitivity adjustment module is used to adjust the preset difference threshold and send the adjusted preset difference threshold to the comparison module; The comparison module is further configured to send a control instruction to the driver according to the adjusted preset difference threshold.

4. The device for reducing interference with breathing detection signals according to claim 3, characterized in that: The single chip microcomputer further comprises a duration adjustment module, and the duration adjustment module is connected to the comparison module; The duration adjustment module is used to adjust the preset duration and send the adjusted preset duration to the comparison module; The comparison module is also used to send a control instruction to the driver according to the adjusted preset duration; The three-way valve is also used to switch interfaces according to the adjusted preset time length.

5. The device for reducing interference with breathing detection signals according to claim 4, characterized in that: The device for reducing interference with the respiratory detection signal also includes a working power supply, which is respectively connected to the respiratory pressure sensor, the single chip microcomputer and the driver; The working power supply is used to provide working voltage for the respiratory pressure sensor, the single chip microcomputer and the driver respectively.

6. The device for reducing interference with breathing detection signals according to claim 5, characterized in that: The oxygen source includes a fourth interface, and the fourth interface is connected to the first interface.

7. The device for reducing interference with breathing detection signals according to claim 6, characterized in that: The oxygen absorber comprises a fifth interface, and the fifth interface is connected to the second interface.

8. The device for reducing interference with breathing detection signals according to claim 7, characterized in that: The respiratory pressure sensor comprises a sixth interface, and the sixth interface is connected to the third interface.

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