An oxygen-supplyable mouth-nose protection system and method

Abstract

In the prior art, face protection systems are used to filter the gas breathed by the wearer, so that the wearer can obtain healthy gas. In practical use, it is difficult to determine the number of times the face protection system is replaced by the wearer, for example, medical personnel. The present invention relates to an oxygenable mouth and nose protection system comprising a face protection unit for providing face protection for the wearer, a gas supply unit for providing gas to the wearer, a control unit for adjusting the gas flow rate and the gas species of the gas supply unit in a wired or wireless manner, and a detection unit capable of detecting the state of the wearer, wherein the gas supply unit is in communication with the face protection unit so that the gas supply unit can provide gas to the face isolated from the face protection unit.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas protection, in particular to a mouth and nose protection system and method capable of supplying oxygen. BACKGROUND

[0002] With the development of science and technology, pollution caused by industrial production is becoming more and more serious, and the concentration of pollutants such as PM (Particulate Matter) 2.5 in the air is increasing year by year, and the frequency of people inhaling polluted gas suffering from various respiratory diseases continues to rise. Face protection can effectively prevent toxic gases, dust and other air pollutants from being inhaled into the lungs, and has become an important barrier to protect the health of people inhaling polluted gas.

[0003] Whether it is a worker working in a high-pollution environment or a medical staff working in a high-infection environment, they need to wear face protection equipment for a long time to ensure that dangerous substances are not inhaled into the human body. During the long wearing process, the face protection equipment needs to cope with different states of the wearer.

[0004] In the prior art, two different sensing methods are provided for face protection equipment to cope with different states of the wearer. For example, a Chinese patent with publication number CN105029769B relates to an intelligent mask, a method for calculating the adsorption amount of pollutants, an intelligent mask and a device. The intelligent mask includes a front cover body, a main cover body and a fixing band, the front cover body is arranged at the first opening end of the main cover body, and the fixing band is arranged at the second opening end of the main cover body; wherein the inside of the front cover body is sequentially provided with a filter and a sensor, the filter is used to adsorb pollutants in the air entering the front cover body, and the sensor is used to record the wearing time of the intelligent mask; the fixing band is used to fix the intelligent mask on the mouth and nose of the user through the second opening end, so as to form a closed cavity between the main cover body and the mouth and nose of the user. According to the wearing time recorded by the intelligent mask and the air index obtained in the wearing time, the adsorption amount of pollutants in the wearing process of the intelligent mask can be calculated. Based on the statistics of the data, the wearer can replace the mask in time to improve the ventilation efficiency of the mask, so that the mask can exchange the gas in and outside the mask in time when facing different states of the wearer.

[0005] Compared with the replacement of the mask, for the wearer who cannot replace the face protection equipment in time while wearing the protective clothing or work clothes for a long time, the utilization rate of the face protection equipment can be improved by increasing the way of exchanging gas of the face protection equipment. The Chinese patent with publication number CN106362318B relates to a kind of active air exchange mask ventilation method and mask ventilator, comprising the following steps: (1) setting mask;(2) set up a mask ventilator;(3) people wear mask, open the strip-shaped opening of mask ventilator by rotating switch, simultaneously by single-chip microcomputer controller control driving motor rotation;(4) when human exhales, driving motor drives fan blade rotation, and exhausts the waste gas exhaled by human between mask and human;(5) when human inhales, driving motor stops rotation or reduces rotation speed, and external air enters through the filter material of mask;(6) realize the active air exchange of mask.In the face protection equipment, gas supply valve is set to increase the gas exchange efficiency of the sealed space between the face protection equipment and the wearer.

[0006] However, in actual use, due to the changes in physiological state and motion state of the wearer, the breathing frequency and oxygen demand of the wearer will change greatly. When the wearer runs or exercises at a high speed, the body will produce certain metabolic products, usually carbon dioxide, and the human body will also inhale too much oxygen to meet the needs of the body. When the wearer wears the oral-nasal protection device, due to the limited efficiency of the oral-nasal protection device in exchanging gas, the wearer needs to breathe rapidly to form a negative pressure in the protection cavity (the space formed between the oral-nasal protection device and the face of the wearer) to ensure that more filtered gas can enter the protection cavity to provide oxygen for the wearer. The prior art provides an oral-nasal protection device that can be connected to an external airway. This device can only continuously provide gas to the wearer in a manual form, and cannot provide the required gas in a timely manner according to the physical state of the wearer. When the wearer works in a daily mode, the amount of breathing gas required by the wearer can be met by relying only on the filtering material of the oral-nasal protection device. When the wearer enters the exercise mode, the oral-nasal protection device needs to provide additional filtered gas. However, in the prior art, whether the wearer needs more filtered gas mainly depends on the wearer's own judgment and adjustment. On the one hand, for wearers who wear protection devices to resist harsh environments, it is very difficult and inconvenient to adjust the operation of the oral-nasal protection device. On the other hand, when the wearer changes from the daily oxygen demand mode to the high oxygen consumption mode, it indicates that the wearer has encountered an emergency and cannot adjust the gas supply in a timely manner, or the behavior of adjusting the gas supply does not have priority for the current event. Therefore, the manual adjustment of the gas supply is not desirable. High heart rate usually occurs when the body is in a state of oxygen deficiency. The oxygen demand of the wearer is directly indicated by the change in heart rate. However, the heart rate also changes due to changes in the wearer's emotions (such as tension and excitement). Therefore, in order to confirm that the body is in a motion-type oxygen deficiency, the present application provides a speed detection for the wearer. By detecting at least two physiological and physical aspects of the wearer, it is determined whether the wearer is truly oxygen deficient, to avoid false operations caused by emotional problems of the wearer, to prevent the wearer from over-oxygenating, and to avoid over-supplying gas to lift the oral-nasal protection device and separate it from the face of the wearer. Based on this, the present application provides an oral-nasal protection system that can supply oxygen.

[0007] In addition, on the one hand, there are differences in the understanding of those skilled in the art, and on the other hand, the applicant has studied a large number of documents and patents when making the present application, but due to the limited space, all the details and contents are not listed in detail. However, this does not mean that the present application does not have these characteristics of the prior art. On the contrary, the present application already has all the characteristics of the prior art, and the applicant reserves the right to add relevant prior art in the background art. SUMMARY

[0008] In the prior art, a face protection system is used to filter the gas breathed by a wearer so that the wearer can obtain healthy gas. In actual use, it is difficult to determine the number of times a wearer, such as a medical staff, changes the face protection system. The medical staff wears a protective suit, and due to the use time and cost of the protective suit, the medical staff will wear the protective suit for at least half a day, and the face protection device is usually sleeved in the protective suit and cannot be replaced while the protective suit is worn. For the wearer who cannot update the face protection device in time, long-term use of the same face protection device will reduce the protection effect and increase the occurrence of hypoxia of the wearer.

[0009] To solve the above problems, the present application provides an oxygen-supplyable mouth and nose protection system. The system comprises a face protection unit for providing face protection for a wearer, a gas supply unit for providing gas for the wearer, a control unit for adjusting the gas flow rate and the gas type of the gas supply unit in a wired or wireless manner, and a detection unit capable of detecting the state of the wearer, wherein the gas supply unit is in communication with the face protection unit so that the gas supply unit can provide gas to the face isolated from the face protection unit.

[0010] Based on this, the present application provides an oxygen-supplyable mouth and nose protection system. The system avoids the problem of inefficient gas exchange caused by long-term wearing of the mouth and nose protection system by setting a gas flow path. The mouth and nose protection system at least comprises a first mode of one-way oxygen supply and a second mode of two-way gas exchange. The first mode can be used for the daily state of the wearer with low oxygen demand. The second mode can be used for the exercise state of the wearer with high oxygen demand or high frequency breathing.

[0011] By classifying the state of the wearer, the breathing frequency and oxygen demand of the wearer in different states are refined, so that the gas supply unit can provide different gas supply conditions based on the different states of the wearer.

[0012] When the wearer is in a normal environment, the oxygen demand is normal and the breathing frequency is stable. In this state, the mouth and nose protection system can meet the breathing demand of the wearer only by gas exchange through the face protection unit. When the wearer enters a high-speed moving state, the oxygen demand of the wearer increases and the breathing is rapid, i.e. the frequency increases, at this time, only the face protection unit for gas exchange will cause many problems. Possible problems are as follows:

[0013] The wearer increases the breathing strength to obtain sufficient gas, so that the face protection unit is separated from the face of the wearer, and the filtering effect of the face protection unit is reduced;

[0014] The wearer has hypoxia symptoms due to the inability to obtain sufficient oxygen in time, which affects the normal physiological behavior of the wearer.

[0015] Specifically, the wearer can be a medical staff, and the medical staff can only exchange gas with the face protection unit during normal activities such as ward rounds and outpatient services. When the medical staff enters an emergency rescue state and moves quickly, the face protection unit needs to provide additional oxygen or air to the medical staff through the external gas supply unit and increase the flow rate of the gas in the space of the face protection unit facing the wearer to ensure that the medical staff in a high-frequency breathing and high-oxygen demand state can obtain sufficient oxygen in time, provide a good breathing environment for rapid movement, and also obtain a virus protection effect through the face protection unit.

[0016] The detection unit is provided with a first detection unit for detecting the physiological state of the wearer and a second detection unit for detecting the motion state of the wearer, wherein when the second detection unit detects that the second detection data of the wearer continuously increases within a first time length range, the control unit triggers the first detection unit to detect the physiological state of the wearer. According to a preferred embodiment, the control unit can confirm that the wearer is in a high-oxygen-consumption endurance motion state based on the first detection data and the second detection data, and adjust the gas flow rate and the gas type of the gas supply unit to match the breathing frequency and the breathing volume of the wearer.

[0017] The wearer can have a daily state and a high-oxygen-consumption endurance motion state.

[0018] The wearer in the daily state is in a calm breathing rhythm. Preferably, the calm breathing rhythm is 14-22 times / min. At the same time, the wearer in the daily state is in a low oxygen consumption, i.e. only by absorbing oxygen in the air. The heart rate of the wearer is 60-100 times / min.

[0019] The heart rate of the wearer in the high-oxygen-consumption endurance motion state can reach more than 100 times / min, and has a high oxygen demand. The wearer in the endurance motion state can also be accompanied by a high-frequency breathing state. Preferably, the breathing frequency of the wearer in the endurance motion state can be higher than 22 times / min. The behaviors of the wearer such as rapid running and cardiac resuscitation can make the wearer enter the high-oxygen-consumption endurance motion state from the daily state.

[0020] Further, when entering the endurance motion state, the wearer can be divided into at least three stages based on the motion process. The first stage is the starting motion stage, and the wearer in this stage generates high-intensity motion behavior but the body has not entered a high-intensity hypoxic state, at this time the heart rate of the wearer has not entered a high-frequency beating but has entered a high-intensity motion state. It can be predicted that the body of the wearer urgently needs a large amount of oxygen to improve the energy consumption efficiency. Based on this, the system increases the oxygen content ratio in the gas delivered to the wearer without changing the gas flow rate.

[0021] The second stage is a peak exercise stage. The wearer is in a high oxygen consumption and energy consumption state. The wearer's heart rate is accelerated and the wearer's breathing is rapid. The system needs to provide the wearer with high flow rate and high oxygen content supplemental gas.

[0022] The third stage is a stop exercise stage. The wearer's body has stopped intense exercise, but the wearer's breathing rate is still high. Due to the hysteresis of the body reaction, the wearer does not need high oxygen content to energize the body although the wearer's breathing is rapid. In order to avoid oxygen poisoning of the wearer due to continuous oxygen supply, the system needs to provide the wearer with high flow rate air. The high flow rate gas can match the high frequency breathing rhythm of the wearer, so that the wearer can inhale fresh gas with each inhalation under the high frequency breathing rhythm.

[0023] According to a preferred embodiment, the endurance exercise state at least comprises a first stage. When the first detection unit detects that the first detection data of the wearer is in a first range and the second detection unit detects that the second detection data of the wearer is higher than a first threshold, the control unit determines that the wearer is in the first stage and adjusts the gas type of the gas supply unit based on the oxygen requirement of the wearer. Preferably, the gas type at least comprises filtered air, oxygen or mixed gas with different oxygen proportions in the gas supply unit. The first range can be 60-100 times / min. The first threshold can be 8 km / h.

[0024] According to a preferred embodiment, the endurance exercise state at least comprises a second stage. When the first detection unit detects that the first detection data of the wearer is in a second range and the second detection unit detects that the second detection data of the wearer is higher than a first threshold, the control unit determines that the wearer is in the second stage and adjusts the gas flow rate and gas type of the gas supply unit based on the oxygen requirement of the wearer. Preferably, the second range can be 100-200 times / min.

[0025] According to a preferred embodiment, due to part of the endurance exercise state, such as cardiopulmonary resuscitation behavior for patients in the emergency room, does not occur displacement, when the first detection data of the wearer continues to rise and the second detection data does not change, the control unit can trigger the third detection unit arranged on the arm of the wearer, and the third detection unit monitors the blood pressure of the wearer in real time, in order to distinguish whether the wearer is in an exercise heart rate rise or an emotional heart rate rise.

[0026] The heartbeat acceleration caused by exercise does not excessively increase the blood pressure (especially the aorta), because the muscles need oxygen during exercise and the capillaries of the whole body dilate to digest the blood pumped by the heart. The heartbeat acceleration caused by emotion increases the blood flow, but there is no flood discharge channel downstream (muscles do not need oxygen, and blood vessels do not dilate), so the pressure in the arteries can only be increased, increasing the risk of blood vessel rupture. Based on this, the system also includes a third detection unit. The third detection unit can be a blood pressure detection assembly. The third detection unit is arranged on the human body or the protective clothing and can detect the blood pressure of the wearer at any time. Preferably, the blood pressure detection assembly can detect the high pressure and low pressure of the human body. Preferably, when the high pressure of the human body is greater than 120 mmHg and the low pressure is greater than 80 mmHg, the human body can be in a state of exercise.

[0027] When the first detection data of the wearer continuously rises and the second detection data does not change, the third detection unit starts to work. When the third detection data or the fourth detection data provided by the third detection unit is higher than the preset value, the control unit determines that the wearer is an emotional type of heart rate rise and maintains the current oxygen supply condition. When the third detection data or the fourth detection data provided by the third detection unit is not higher than the preset value, the control unit determines that the wearer is an exercise type of heart rate rise, and confirms that the wearer is in a non-displacement endurance exercise state.

[0028] According to a preferred embodiment, the endurance exercise state at least includes a third phase, wherein when the first detection unit detects that the first detection data of the wearer is in the second range and the second detection unit detects that the second detection data of the wearer is lower than the first threshold value, the control unit determines that the wearer is in the third phase, and adjusts the gas flow rate of the gas supply unit based on the oxygen requirement of the wearer.

[0029] When the wearer is displaced based on the motion behavior but has not reached the high oxygen consumption state of rapid breathing, it is predictable that the wearer will experience hypoxia due to the continued motion. Based on this, when the wearer is in the first stage, the wearer needs to be provided with a high-oxygen mixed gas in advance so that the body can absorb a large amount of oxygen to maintain the sudden onset of intense energy-consuming exercise. However, when the wearer is in the third stage, it is predictable that the wearer will stop moving and will not need excess oxygen. Based on this, the supply of high-oxygen mixed gas to the wearer should be stopped in advance to prevent the wearer from developing symptoms of oxygen poisoning after inhaling a large amount of oxygen. After the wearer stops moving, the body will experience compensatory metabolism, and to prevent the wearer from experiencing stress in a low-oxygen environment, the oxygen proportion in the mixed gas should be gradually reduced. At the same time, compared to people wearing mouth and nose protection equipment, people not wearing mouth and nose protection equipment can expel carbon dioxide in time when they are breathing heavily without changing the air proportion near the mouth and nose. Because the gas flow in the protection cavity is weaker than the gas flow in the air environment, the gas near the mouth and nose during heavy breathing will lose oxygen in a short time, causing a hypoxic environment. Therefore, at the beginning of the end of the exercise, to ensure the breathing environment of the wearer who is breathing heavily, the oxygen supply gas volume needs to be changed in a gradient while maintaining the gas flow rate. The gradient change in the oxygen proportion gradually changes with the change in the breathing speed of the wearer, avoiding the problem of the wearer breathing heavily and inhaling too much oxygen, while also maintaining the breathing environment of the wearer.

[0030] According to a preferred embodiment, when the wearer is in the first stage, the gas type can be a mixed gas of a fixed proportion of oxygen and filtered air. Preferably, oxygen: filtered air = 1:9. When the wearer is in the third stage, the gas type can gradually change over time. Specifically, the gas type can be reduced by 0.1 in the proportion of oxygen content in air every 10s.

[0031] According to a preferred embodiment, when the first detection unit detects that the first detection data of the wearer is in the first range and the second detection unit detects that the second detection data of the wearer is higher than the first threshold, the control unit determines that the wearer is in the first stage and adjusts the gas type of the gas supply unit based on the oxygen demand of the wearer, wherein the gas type can be a mixed gas of a fixed proportion of oxygen and filtered air.

[0032] According to a preferred embodiment, when the first detection unit detects the first detection data of the wearer in the second range and the second detection unit detects the second detection data of the wearer below the first threshold, the control unit judges that the wearer is in the third stage and adjusts the gas flow rate and the gas type of the gas supply unit based on the oxygen requirement of the wearer, wherein the gas flow rate of the second stage and the third stage is the same, and the gas type is to reduce the proportion of oxygen in the mixed gas over time.

[0033] According to a preferred embodiment, the gas flow rate provided by the gas supply unit to the wearer can be 300-1000 L / min. When the wearer is in the first stage, the gas flow rate can be 300-600 L / min. When the wearer is in the second or third stage, the gas flow rate can be 600-1000 L / min. The gas flow rate increases based on the increase in the breathing rate of the wearer.

[0034] According to a preferred embodiment, the face protection unit is provided with at least two air valves, wherein the gas flow directions of the two air valves are opposite.

[0035] According to a preferred embodiment, when the first detection unit detects the first detection data of the wearer in the first range and the second detection unit detects the second detection data of the wearer below the first threshold, the control unit controls the gas supply unit to enter the first mode of one-way oxygen supply based on the wearer entering the daily state. Preferably, one-way oxygen supply means that the gas supply unit only provides air or air mixed with oxygen to the wearer through the face protection unit.

[0036] According to a preferred embodiment, when the first detection unit detects the first detection data of the wearer in the second range and / or the second detection unit detects the second detection data of the wearer above the first threshold, the control unit controls the gas supply unit to enter the second mode of bidirectional guiding air flow based on the wearer entering the sports state, wherein the bidirectional of the guiding air flow is in opposite directions. Preferably, bidirectional guiding air flow means that the gas supply unit provides at least one air inlet flow and one air outlet flow.

[0037] According to a preferred embodiment, the second detecting unit can be a speed detecting sensor, which can detect the displacement speed of the wearer when the wearer enters a detectable state path. Preferably, the detectable state path can be a path that needs to be passed through in an emergency department, a path in a ward where acute cases are concentrated, etc. For example, a medical staff can move quickly when he / she takes off the protective equipment in the rest area but does not completely remove the protective equipment. If the gas supply unit provides gas supply at this time, it will cause waste, especially when the gas supply unit is set to be small and can be hung on the body in order to keep pace with the wearer. The oxygen storage amount of the gas supply unit is small, and the waste of oxygen will make the gas supply unit unable to provide oxygen supply subsequently.

[0038] According to a preferred embodiment, the first detecting unit can be a heartbeat detecting sensor, which can determine the physiological state of the wearer by detecting the pulse of the wrist or the heartbeat of the chest of the human body.

[0039] The present application provides an oxygen-provided mouth and nose protection method. The method comprises the following steps:

[0040] continuously detecting the motion state of the wearer based on the detection of the moving speed of the wearer;

[0041] triggering the detection of the physiological state of the wearer to confirm the high-oxygen-consumption endurance motion state of the wearer when the moving speed of the wearer continuously increases within a first time length range;

[0042] adjusting the gas flow rate and the gas species provided to the wearer when the first detection data of the wearer is in a second range and the second detection data is higher than a first threshold.

[0043] The adjustment of the gas flow rate and the gas species involved in the present application can be exogenous, that is, when the wearer is in different states, the gas supply scheme is personalized based on the physical parameters of the wearer. For example, the gas supply speed and the oxygen supply amount of a 160 cm, 60 kg girl will be lower than those of a 170 cm, 70 kg boy in the same physical state. BRIEF DESCRIPTION OF DRAWINGS

[0044] Figure 1 is a structural schematic diagram of an embodiment provided by the present application.

[0045] LIST OF REFERENCE NUMERALS

[0046] 100: face protection unit; 200: gas supply unit; 300: first air valve; 400: second air valve. DETAILED DESCRIPTION

[0047] The application will be described in detail below with reference to the accompanying drawings.

[0048] The present application provides an oxygen-supplying oral-nasal protection system. The system comprises a face protection unit 100 for providing face protection for a wearer, a gas supply unit 200 for providing gas to the wearer, a control unit for adjusting the gas flow rate and the gas type of the gas supply unit 200 in a wired or wireless manner, and a detection unit capable of detecting the state of the wearer, wherein the gas supply unit 200 is in communication with the face protection unit 100 so that the gas supply unit 200 can provide gas to the face isolated by the face protection unit 100. The detection unit is provided with a first detection unit for detecting the physiological state of the wearer and a second detection unit for detecting the motion state of the wearer, wherein when the second detection unit detects that the second detection data of the wearer continuously increases within a first time length range, the control unit triggers the first detection unit to detect the physiological state of the wearer. Preferably, the gas supply unit 200 can be a small-sized oxygen supply device.

[0049] According to a preferred embodiment, the control unit can confirm that the wearer is in a high-oxygen-consuming endurance-type motion state based on the first detection data and the second detection data, and adjust the gas flow rate and the gas type of the gas supply unit 200 to match the breathing frequency and the breathing volume of the wearer.

[0050] According to a preferred embodiment, the endurance-type motion state at least comprises a first phase, wherein when the first detection unit detects that the first detection data of the wearer is in a first range and the second detection unit detects that the second detection data of the wearer is higher than a first threshold, the control unit determines that the wearer is in the first phase and adjusts the gas type of the gas supply unit 200 based on the oxygen requirement of the wearer.

[0051] According to a preferred embodiment, the endurance-type motion state at least comprises a second phase, wherein when the first detection unit detects that the first detection data of the wearer is in a second range and the second detection unit detects that the second detection data of the wearer is higher than a first threshold, the control unit determines that the wearer is in the second phase and adjusts the gas flow rate and the gas type of the gas supply unit 200 based on the oxygen requirement of the wearer.

[0052] According to a preferred embodiment, the endurance exercise state comprises at least a third phase, wherein, when the first detection unit detects the first detection data of the wearer in the second range and the second detection unit detects the second detection data of the wearer below the first threshold, the control unit determines that the wearer is in the third phase and adjusts the gas flow rate of the gas supply unit 200 based on the oxygen requirement of the wearer. At the end of the exercise, the body stops the intense oxygen-consuming exercise, but due to the hysteresis of the body's response and the hypoxic response caused by excessive energy consumption, the body is still in a state of rapid gas exchange, but at this time the body does not need a high content of oxygen, therefore, in order to match the breathing rhythm of the wearer, the gas supply unit 200 can provide the wearer with high flow rate of air without providing mixed gas with higher oxygen content. Through this gas supply measure, the problem of oxygen poisoning of the wearer can also be avoided.

[0053] According to a preferred embodiment, the face protection unit 100 is provided with at least two ventilation valves, wherein the gas flow directions of the two ventilation valves are opposite. Preferably, the ventilation valve can be a one-way micro valve of model N9501, which is provided with an external thread to connect the pipeline.

[0054] According to a preferred embodiment, when the first detection unit detects the first detection data of the wearer in the first range and the second detection unit detects the second detection data of the wearer below the first threshold, the control unit controls the gas supply unit 200 to enter the first mode of one-way oxygen supply based on the wearer entering the daily state. When the wearer's body enters a calm state, the demand for oxygen and the breathing frequency enter a normal state, the gas supply unit 200 can inject a small amount of oxygen into the protection cavity.

[0055] According to a preferred embodiment, when the face protection unit 100 is worn for a long time, medical staff can control the walking speed and breathing frequency to make the gas supply unit 200 automatically enter the supply mode of high oxygen content and high flow rate.

[0056] According to a preferred embodiment, when the first detection unit detects the first detection data of the wearer in the second range and / or the second detection unit detects the second detection data of the wearer above the first threshold, the control unit controls the gas supply unit 200 to enter the second mode of bidirectional guiding gas flow based on the wearer entering the exercise state, wherein the bidirectional of the guiding gas flow is in opposite directions.

[0057] According to a preferred embodiment, the second detection unit can be a speed detection sensor, wherein the speed detection sensor can detect the displacement speed of the wearer when the wearer enters the detectable state path.

[0058] According to a preferred embodiment, the first detection unit can be a heartbeat detection sensor, wherein the heartbeat detection sensor can determine the wearer's physiological state by detecting the pulse of the human wrist or the heartbeat of the chest. Preferably, the heartbeat detection sensor can be a heart rate sensor-KY-039.

[0059] The present invention provides a method for protecting the nose and mouth while providing oxygen. The method comprises the following steps:

[0060] The wearer's motion state is continuously detected based on the detection of the wearer's movement speed; when the wearer's movement speed continues to increase within a first time length range, the wearer's physiological state is triggered to confirm the wearer's high oxygen consumption endurance motion state; when the wearer's first detection data is within a second range and the second detection data is higher than a first threshold, the gas flow rate and gas type provided to the wearer are adjusted.

[0061] Example 1

[0062] The present invention relates to a face protection system. The present invention relates to a mouth and nose protection system.

[0063] The system of the present invention is suitable for medical personnel wearing protective equipment.

[0064] The medical staff wears protective clothing and a facial protection unit 100. A small oxygen concentrator is placed at the waist. This concentrator is connected to the facial protection unit 100 via a reflux-proof tube. The concentrator is connected to the control unit via a wired or wireless connection to receive oxygen volume and flow rate adjustment commands from the control unit.

[0065] The first detection unit is worn on the wrist of a healthcare worker to detect pulse beats at that wrist. The second detection unit is located in a small oxygen generator. The second detection unit is a speed sensor. The first detection unit is an infrared heart rate sensor.

[0066] When the medical staff treats the emergency patient, the medical staff moves quickly. Based on the second detection unit detecting an increase in the movement speed of the medical staff, the control unit triggers the first detection unit.

[0067] The first detection unit detects the real-time heart rate of the medical staff. The second detection unit detects the real-time moving speed of the medical staff.

[0068] When the first detection unit detects the first detection data of the wearer at 100-200 times / min and the second detection unit detects the second detection data of the wearer higher than 7 km / h, the control unit determines that the wearer is in the second stage of the endurance exercise state. Based on the physical state of the wearer, the control unit controls the gas supply unit 200 to adjust the gas flow rate and the gas type according to the oxygen demand of the wearer. Specifically, the gas flow rate can be 700 L / min. The gas type contains 5% oxygen and 95% air.

[0069] Embodiment 2

[0070] The present application provides a face protection device capable of bidirectional ventilation. The present application provides a mask with ventilation valves.

[0071] The face protection device is provided with at least two connection ports. The first airflow member has a detachable filter sheet, which is located at the first connection port.

[0072] The second connection port has a chamber, at least one first ventilation valve 300 for air intake, and at least one second ventilation valve 400 for air outlet. The at least one first ventilation valve 300 for air intake is in communication with the outside, and the at least one second ventilation valve 400 for air outlet is in communication with the chamber. The first ventilation valve 300 and the second ventilation valve 400 are staggered.

[0073] The gas supply unit 200 includes at least two airflow members. The first airflow member is combined with the first ventilation valve 300. The second airflow member is combined with the second ventilation valve 400. The face protection device is matched with the filter sheet and the connection port, which can make the face protection device have good air permeability, reduce the stuffiness of the face protection device, and improve the comfort of use. At the same time, this structure reduces the influence on sound transmission, so that the wearer can communicate normally without amplifying the volume. In addition, the second ventilation valve 400 can also form a channel that prevents fluid from flowing straight, which improves air permeability while avoiding the entry of external droplets into the protection chamber (the space formed by the face protection device and the wearer's face) and the transmission of droplets in the face protection device to the outside, and also has the effect of improving the protection level.

[0074] The first ventilation valve 300 and the second ventilation valve 400 are set as opposite direction one-way valves. When the gas supply unit 200 does not need to provide gas for the wearer or does not need to exhaust, the first ventilation valve 300 or the second ventilation valve 400 is automatically closed to avoid the exchange of gas between the inside and outside of the protection chamber.

[0075] It should be noted that the above-mentioned embodiments are only examples, and those skilled in the art can think of various solutions under the inspiration of the disclosure of the present application, and these solutions also belong to the disclosed range of the present application and fall within the protection scope of the present application. Those skilled in the art should understand that the specification and drawings of the present application are illustrative and not limiting to the claims. The protection scope of the present application is defined by the claims and their equivalents. The specification of the present application contains multiple inventive concepts, such as "preferably", "according to a preferred embodiment" or "optionally", which all indicate that the corresponding paragraph discloses an independent concept, and the applicant reserves the right to file a divisional application according to each inventive concept. Throughout the text, the features introduced by "preferably" are only optional ways, and should not be understood as necessarily provided, therefore the applicant reserves the right to abandon or delete the relevant preferred features at any time.

Claims

1. An oxygen-supplyable respiratory protection system comprising a face protection unit (100) that provides face protection for a wearer, a gas supply unit (200) that supplies gas to the wearer, a control unit that wirelessly or wiredly adjusts a gas flow rate and a gas kind of the gas supply unit (200), and a detection unit that is capable of detecting a state of the wearer, wherein, The gas supply unit (200) is in communication with the face protection unit (100) so that the gas supply unit (200) can supply gas to the isolated face of the face protection unit (100), It is characterized in that, The detection unit is provided with a first detection unit for detecting the physiological state of the wearer, a second detection unit for detecting the motion state of the wearer, and a third detection unit for detecting the blood pressure of the wearer, wherein, When the second detection unit detects that the second detection data of the wearer continuously increases within a first time length range, the control unit triggers the first detection unit to detect the physiological state of the wearer to obtain first detection data, The control unit can confirm that the wearer is in a high-oxygen-consumption endurance type motion state based on the first detection data and the second detection data, and adjust the gas flow rate and the gas type of the gas supply unit (200) to match the breathing frequency and the breathing volume of the wearer, When the first detection data of the wearer continuously rises and the second detection data does not change, the third detection unit starts to work, when the third detection data or the fourth detection data provided by the third detection unit is higher than the preset value, the control unit judges that the wearer is an emotional heart rate rise and keeps the current oxygen supply condition, when the third detection data or the fourth detection data provided by the third detection unit is not higher than the preset value, the control unit judges that the wearer is a motion type heart rate rise, and confirms that the wearer is in a non-displacement endurance type motion state, the first detection unit is a heartbeat detection sensor, and the second detection unit is a speed detection sensor.

2. The oral-nasal protection system of claim 1, wherein, The endurance type motion state at least includes a first stage, wherein when the first detection unit detects that the first detection data of the wearer is in a first range and the second detection unit detects that the second detection data of the wearer is higher than a first threshold, the control unit judges that the wearer is in the first stage and adjusts the gas type of the gas supply unit (200) based on the oxygen requirement of the wearer.

3. The oral-nasal protection system of claim 2, wherein, The endurance type motion state at least includes a second stage, wherein when the first detection unit detects that the first detection data of the wearer is in a second range and the second detection unit detects that the second detection data of the wearer is higher than a first threshold, the control unit judges that the wearer is in the second stage and adjusts the gas flow rate and the gas type of the gas supply unit (200) based on the oxygen requirement of the wearer.

4. The oral-nasal protection system of claim 3, wherein, The endurance type motion state at least includes a third stage, wherein when the first detection unit detects that the first detection data of the wearer is in a second range and the second detection unit detects that the second detection data of the wearer is lower than a first threshold, the control unit judges that the wearer is in the third stage and adjusts the gas flow rate and the gas type of the gas supply unit (200) based on the oxygen requirement of the wearer.

5. The oral-nasal protection system of claim 4, wherein, The face protection unit (100) is provided with at least two air valves, wherein the gas flow directions of the two air valves are opposite.

6. The oral-nasal protection system of claim 5, wherein, When the first detection unit detects the first detection data of the wearer in the first range and the second detection unit detects the second detection data of the wearer below the first threshold value, the control unit controls the gas supply unit (200) to enter the first mode of one-way oxygen supply based on the wearer entering the daily state.

7. The oral-nasal protection system of claim 6, wherein, When the first detection unit detects the first detection data of the wearer in the second range and / or the second detection unit detects the second detection data of the wearer above the first threshold value, the control unit controls the gas supply unit (200) to enter the second mode of bidirectional guiding air flow based on the wearer entering the sports state, wherein the bidirectional of the guiding air flow is in opposite directions.

8. The oral-nasal protection system of claim 7, wherein, The speed detection sensor is capable of detecting the displacement speed of the wearer when the wearer enters the detectable state.

9. The oral-nasal protection system of claim 8, wherein, The heartbeat detection sensor is capable of determining the physiological state of the wearer by detecting the pulse of the wrist or the heartbeat of the chest.

10. An oxygen-supplied respirator method based on the respirator system according to any one of claims 1 to 9, characterized in that, The method comprises the following steps: continuously detecting the sports state of the wearer based on the detection of the moving speed of the wearer; triggering the detection of the physiological state of the wearer for confirming the high-oxygen-consumption endurance sports state of the wearer when the moving speed of the wearer continuously increases in the first time length range; adjusting the gas flow rate and the gas species provided to the wearer when the first detection data of the wearer is in the second range and the second detection data is above the first threshold value; when the first detection data of the wearer continuously rises and the second detection data does not change, the third detection unit is turned on, when the third detection data or the fourth detection data provided by the third detection unit is above the preset value, the control unit judges that the wearer is in the emotional heart rate rise and keeps the current oxygen supply condition, when the third detection data or the fourth detection data provided by the third detection unit is not above the preset value, the control unit judges that the wearer is in the sports heart rate rise and confirms that the wearer is in the endurance sports state without displacement.

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