Universal space oxygen balancing device

Abstract

The invention discloses a universal space oxygen balance device, which belongs to the technical field of gas environment regulation and comprises an oxygen production module, an oxygen concentration detection module, a control module, a man-machine interaction module and an alarm module. The oxygen concentration detection module is arranged in a target space, collects real-time oxygen concentration data and transmits the real-time oxygen concentration data to the control module; the control module is electrically connected with the oxygen generation module and the oxygen concentration detection module, an oxygen concentration threshold value meeting the human body requirement is preset in the control module, and after real-time data and the threshold value are compared, the oxygen generation power and the oxygen supply amount of the oxygen generation module are automatically adjusted, so that the oxygen concentration of the target space is stabilized within the threshold value range. The oxygen generation module can be arranged inside and outside a target space, is communicated with the target space through a pipeline or an air duct, and is matched with a closed or semi-closed building space and a vehicle cabin. The device is high in multi-scene adaptability, safe, stable and energy-saving, and the comfort level of personnel and the use safety can be effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas environment regulation, and in particular to a general-purpose space oxygen balancing device for maintaining stable oxygen concentration in a closed or semi-closed space, suitable for multiple scenarios. BACKGROUND

[0002] With the increasing demand for comfort and safety in living, working and traveling environments, the oxygen concentration balance in closed or semi-closed spaces has gradually become a key factor affecting personnel health and safety. However, the mature technology and specialized devices for "space oxygen balance" in the current market are still in a blank state, and the existing technology and products have obvious defects, which cannot meet the actual demand. The specific problems are as follows: 1. Multiple scenarios have prominent hypoxia problems and significant safety hazards (1) Vehicle cabin scenarios Automobile cabins, motor homes and other vehicle cabins generally have strong sealing properties to ensure sound and heat insulation. After a long time of use, the oxygen consumed by the occupants' breathing and the accumulation of carbon dioxide in the cabin will cause the oxygen concentration to continue to decrease - when the oxygen concentration is lower than 20%, the driver and passengers are prone to fatigue, drowsiness, and reduced driving judgment. If the vehicle travels to high altitude areas, the natural hypoxia in low pressure environments will further trigger altitude sickness (such as headache, chest tightness), which seriously threatens road safety. More seriously, there have been public cases showing that existing vehicle cabins lack effective oxygen concentration monitoring and oxygen supplement mechanisms, and once people are trapped, it is easy to cause fatal safety accidents.

[0003] (2) Building space scenarios Family rooms, nursing home rooms, hospital rooms, shopping areas, restaurants, bars and other building spaces, or due to high population density (such as shopping malls during peak hours), or due to insufficient ventilation (such as closed sickrooms), all have oxygen concentration problems: hypoxia in ordinary rooms will lead to decreased sleep quality and daytime fatigue of occupants; the elderly and patients in nursing homes and hospital rooms have higher oxygen demand, and hypoxia will delay recovery and even exacerbate symptoms; in shopping malls, restaurants and other consumer scenarios, hypoxia will reduce customer experience and affect consumer willingness. Among them, although special hospital rooms (such as respiratory department rooms) have independent oxygen inhalation equipment, they are mostly "point-to-person oxygen supply" and cannot achieve oxygen balance in the entire space, with limited scope of application.

[0004] 2. Existing equipment has no oxygen balancing function and cannot solve the core problem The core function of the equipment widely used in the current market, such as air conditioners, ventilation fans, large ventilation devices, etc., is only "temperature regulation" or "air circulation" - the air conditioner can control the space temperature, but cannot actively supplement oxygen; the ventilation fan and the large ventilation device rely on external fresh air, and if the external environment itself has low oxygen concentration (such as high altitude areas), or the external air is polluted (such as urban haze days), the indoor oxygen concentration cannot be effectively improved. The existing devices do not involve the cooperative control logic of "oxygen concentration detection - automatic oxygen supplement - stable threshold", and completely lack the space oxygen balancing capability, and cannot solve the hypoxia pain points in the above multiple scenarios.

[0005] 3. Lack of a universal solution suitable for multiple scenarios The existing oxygen supplement devices (such as household oxygen generators) are mostly designed for "single function and single scenario": the household oxygen generator can only provide high-concentration oxygen for a single person, and cannot cover the entire room; the industrial oxygen generator set is large in size and high in power, and is not suitable for small spaces such as homes and vehicles. At present, there is no universal oxygen balancing device that can adapt the power according to the space volume and adjust the threshold according to the scene, and can be integrated into existing devices (such as air conditioners and ventilation fans), resulting in the need for separate design solutions for different scenarios, high application cost and great difficulty in popularization.

[0006] In summary, the existing technology cannot meet the demand of "stable control of oxygen concentration in multiple scenarios", and there is an urgent need for a universal space oxygen balancing device with the functions of "real-time detection - automatic adjustment - multiple scenario adaptation" to solve the safety hazards and experience problems caused by hypoxia. SUMMARY

[0007] The present application aims to at least partially solve one of the technical problems in the related art.

[0008] To achieve the above-mentioned purpose, the first aspect of the present application proposes a universal space oxygen balancing device, comprising an oxygen generating module, an oxygen concentration detection module and a control module, wherein the oxygen concentration detection module is arranged inside a target space, for collecting real-time oxygen concentration data of the target space and transmitting the real-time oxygen concentration data to the control module; the control module is electrically connected with the oxygen generating module and the oxygen concentration detection module respectively, and the control module has an oxygen concentration threshold preset inside to adapt to the human body demand; after receiving the real-time oxygen concentration data transmitted by the oxygen concentration detection module, the control module compares the real-time oxygen concentration data with the preset oxygen concentration threshold, and automatically adjusts the oxygen generating power and the oxygen supply amount of the oxygen generating module according to the comparison result, so that the oxygen concentration in the target space is stably maintained within the oxygen concentration threshold range; the oxygen generating module is arranged at one of the outside and the inside of the target space, and is communicated with the inside of the target space through one selected from a pipe and an air duct, to deliver oxygen to the target space.

[0009] The general space oxygen balancing device provided by the embodiment of the application realizes automatic monitoring and adjustment of oxygen concentration in different closed / semi-closed spaces through the collaborative design of "oxygen production-detection-control", maintains the oxygen concentration in a threshold range suitable for human needs, and has multi-scene adaptability, safety redundancy and energy saving advantages.

[0010] In addition, the general space oxygen balancing device provided by the embodiment of the application can have the following additional technical features: In an embodiment of the application, the preset oxygen concentration threshold in the control module includes a conventional scene threshold and a special scene threshold; the conventional scene threshold is 21%±0.5%, which is suitable for a conventional oxygen demand scene; and the special scene threshold is 23%-25%, which is suitable for a scene in which the oxygen concentration needs to be increased.

[0011] In an embodiment of the application, when the oxygen production module is arranged inside the target space, it is integrated into any one of an air conditioner, an air exhaust fan and a large air exchange device in the target space, and is in communication with the inside of the target space through one of the original air duct of the device and a newly added pipeline to deliver oxygen to the target space.

[0012] In an embodiment of the application, the oxygen production power and the maximum oxygen supply amount of the oxygen production module are designed according to the volume of the target space; when the target space is a car cab and a motor home (volume 2-5 m³), the oxygen production power of the oxygen production module is 50 W-80 W, and the maximum oxygen supply amount is 1 L / min-2 L / min; when the target space is a single patient room and an ordinary room (volume 15-30 m³), the oxygen production power of the oxygen production module is 100 W-150 W, and the maximum oxygen supply amount is 3 L / min-5 L / min; when the target space is a large supermarket and a theater (volume 500-1000 m³), the oxygen production module is designed in a unit, the oxygen production power is 500 W-800 W, and the maximum oxygen supply amount is 10 L / min-15 L / min.

[0013] In an embodiment of the application, the oxygen concentration detection module includes at least one oxygen probe; the number and arrangement position of the oxygen probe are determined according to the area and layout of the target space; when the area of the target space is ≤30 m², 1-2 oxygen probes are arranged, and are arranged in the middle region of the target space and the core region close to the personnel activity, respectively; when the area of the target space is >30 m², 3-5 oxygen probes are arranged, and are evenly distributed in different regions of the target space to realize comprehensive collection of the oxygen concentration in the target space.

[0014] In an embodiment of the present application, a man-machine interaction module is further included; the man-machine interaction module is electrically connected with the control module, and the man-machine interaction module is arranged at a position within the target space which is convenient for personnel to observe and operate; the man-machine interaction module includes a display screen and operation buttons; the display screen is used to display the current oxygen concentration of the target space, the working state (start / stop, current power) of the oxygen production module in real time; the operation buttons are used to manually adjust the oxygen concentration threshold within the threshold range preset by the control module.

[0015] In an embodiment of the present application, an alarm module is further included; the alarm module is electrically connected with the control module, and the alarm module is arranged at a position within the target space which is easily observed by personnel; when any one of the following abnormal conditions occurs, the control module sends a trigger signal to the alarm module, and the alarm module sends an audible and visual alarm signal: the oxygen concentration detection module fails to transmit real-time oxygen concentration data to the control module; the oxygen production module fails to normally produce oxygen, and the real-time oxygen concentration within the target space is lower than the lower limit of the oxygen concentration threshold preset by the control module; the real-time oxygen concentration within the target space is lower than 18% and higher than 28% of the safety range.

[0016] In an embodiment of the present application, the target space is a closed and semi-closed building space and a vehicle cabin.

[0017] In an embodiment of the present application, the adjustment logic of the control module to the oxygen production module is specifically as follows: when the real-time oxygen concentration data is lower than the lower limit of the oxygen concentration threshold, the control module outputs a control signal of increasing power to the oxygen production module, increases the oxygen production power of the oxygen production module, and increases the oxygen supply amount; when the real-time oxygen concentration data is within the range of the oxygen concentration threshold, the control module outputs a control signal of maintaining the current power to the oxygen production module, maintains the current oxygen production power of the oxygen production module, and keeps the oxygen supply amount stable; when the real-time oxygen concentration data is higher than the upper limit of the oxygen concentration threshold, and the oxygen concentration threshold is not a special scene threshold, the control module outputs a shutdown signal to the oxygen production module, suspends the oxygen production work of the oxygen production module, and avoids excessive enrichment of oxygen.

[0018] Compared with the prior art, the present application has the following advantages: (1) The device can cover all scenes from vehicle cabins (small volume) to large supermarkets (large volume) through the design of "volume-adaptive power", "scene-adaptive threshold", and "flexible installation position", without the need to develop for a single scene, thereby reducing application cost and being widely popularized in multiple fields such as travel, residence, medical treatment, and consumption.

[0019] (2) Through the "triple guarantee" of real-time monitoring by the oxygen concentration detection module, automatic adjustment by the control module, and abnormal early warning by the alarm module, the target space oxygen concentration is ensured to be stable within the safe threshold range, effectively avoiding safety problems such as driver fatigue, child suffocation, and exacerbation of patient hypoxia, and preventing oxygen poisoning risks caused by excessive oxygen enrichment.

[0020] (3) The oxygen production module adopts the logic of "adjusting power on demand", which only increases power when the oxygen concentration is below the threshold, avoiding the energy waste of "continuous full-power oxygen supply". At the same time, it can be integrated into existing air conditioners, ventilation fans, and other devices, without the need for additional complex pipeline installation, reducing installation and use costs.

[0021] (4) Under normal circumstances, the oxygen concentration is maintained at 21% ± 0.5%, ensuring personnel comfort (relieving fatigue and improving sleep quality); under special circumstances, it can be adjusted to a high oxygen concentration of 23%-25% to meet the rehabilitation needs of the elderly and patients, while the human-computer interaction module is used to realize parameter visualization and manual adjustment, improving the convenience of use.

[0022] Additional aspects and advantages of the application will be in part apparent and in part pointed out hereinafter in the description of the application. BRIEF DESCRIPTION OF DRAWINGS

[0023] The above and / or additional aspects and advantages of the application will become apparent and be readily appreciated from the following description of embodiments, taken in conjunction with the accompanying drawings, in which: Figure 1 A perspective view of a general-purpose space oxygen balancing device according to an embodiment of the application; Figure 2 A perspective view of a general-purpose space oxygen balancing device according to an embodiment of the application; Figure 3 A perspective view of a general-purpose space oxygen balancing device according to an embodiment of the application; Figure 4 A perspective view of a general-purpose space oxygen balancing device according to an embodiment of the application; Figure 5 A perspective view of a general-purpose space oxygen balancing device according to an embodiment of the application; Figure 6 A perspective view of a general-purpose space oxygen balancing device according to an embodiment of the application; Figure 7 A perspective view of a general-purpose space oxygen balancing device according to an embodiment of the application;

[0024] As shown in the figure: 1, oxygen production module; 2, oxygen concentration detection module; 3, control module; 21, oxygen probe; 4, human-computer interaction module; 41, display screen; 42, operation button; 5, alarm module. DETAILED DESCRIPTION

[0025] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application. On the contrary, the embodiments of the present application include all variations, modifications and equivalents falling within the spirit and scope of the appended claims.

[0026] A general space oxygen balancing device according to an embodiment of the present application is described below in conjunction with the accompanying drawings.

[0027] As shown in the figure, a general space oxygen balancing device according to an embodiment of the present application can include an oxygen production module 1, an oxygen concentration detection module 2 and a control module 3. Figures 1-7 Embodiment one: car cab / motor home scene (vehicle cabin target space)

[0028] This embodiment is suitable for a vehicle cabin with strong sealing and small volume, and solves the problems of driver fatigue, high altitude reaction and safety hazards. 1. Overall configuration of the device

[0029] Oxygen production module 1: miniaturized design to adapt to the limited space of the cab, installation position selected outside the cab; the oxygen production power of the oxygen production module 1 is adapted to the volume of the cab (conventional 2-5 m³), and the adjustable range is set to 50W-80W, and the maximum oxygen supply is 1L / min-2L / min; the communication mode between the oxygen production module 1 and the inside of the cab is "piping communication", and a corrosion-resistant flexible pipe (material is food-grade PVC to avoid odor during gas transportation) is used, one end of the pipe is connected to the oxygen outlet of the oxygen production module 1, the other end penetrates into the inside of the cab, and the outlet end is fixed inside the air conditioning outlet of the co-pilot side (utilizing the air conditioning outlet airflow to assist the uniform diffusion of oxygen, without additional design of diffusion structure).

[0030] ​Oxygen concentration detection module 2: contains 1 oxygen probe 21 (selected as a high-precision electrochemical sensor, response time ≤10 seconds, to ensure real-time data); the installation position of the oxygen probe 21 avoids the ventilation dead angle and interference source of the cab (specifically fixed above the center console near the front windshield, the distance from the air outlet of the air conditioner is ≥15 cm, to avoid the detection error caused by direct airflow blowing); the sampling frequency of the oxygen probe 21 is set to 1 time / 30 seconds (considering detection accuracy and energy consumption, to avoid module heating caused by frequent sampling), and the sampling data is transmitted to the control module 3 through wires (the wires are routed along the interior of the center console of the cab, without affecting the operation of the driver and passenger).

[0031] Control module 3: integrated design, directly integrated into the idle interface of the original ECU (electronic control unit) of the vehicle (without additional occupation of the cab space, reducing the difficulty of modification); the connection mode of the control module 3 with the oxygen generation module 1 and the oxygen concentration detection module 2 is "electrical connection", which specifically obtains power through the automobile OBD interface and realizes data interaction through the CAN bus; the preset oxygen concentration threshold in the control module 3 is "normal scene threshold", which is set to 21%±0.5% (i.e. lower limit 20.5%, upper limit 21.5%), which is suitable for the daily comfort needs of the driver and passenger; if the vehicle needs to go to the plateau area, the threshold can be temporarily adjusted through the man-machine interaction module 4 (but not exceeding the range of 21%±1%, to avoid excessive enrichment of oxygen).

[0032] Man-machine interaction module 4: without independent design of hardware, directly reuse the existing instrument panel display screen 41 and steering wheel operation keys 42 of the vehicle; the display screen 41 adds a new "oxygen balance state" display area, which displays two core information in real time: one is the current cab oxygen concentration value (accurate to 0.1%, such as "21.2%"), and the other is the working state of the oxygen generation module 1 (such as "normal oxygen supply", "standby", "power adjustment"); two idle keys (such as custom keys beside "volume + / -") in the steering wheel operation keys 42 are selected and set as "threshold up" and "threshold down" functions, which need to be pressed for 2 seconds to trigger (to avoid accidental touch), and the adjustment range is limited to 20%-22% by the control module 3 (to prevent abnormal threshold caused by user error operation).

[0033] Alarm module 5: linked with the original sound and light system of the vehicle, without independent design of alarm hardware; when the alarm is triggered, the control module 3 sends an alarm signal to the vehicle ECU through the CAN bus, triggering two actions: one is that the cab horn emits intermittent beep sound ("drip-drip-drip") (frequency is 1 time / second, volume is lower than 50% of the maximum volume of the vehicle horn, to avoid startling the driver and passenger), and the other is that the "oxygen balance alarm lamp" (a newly added red LED lamp, located beside the speedometer of the instrument panel) flashes (frequency is 1 time / second); if the alarm lasts for 30 seconds without processing, the control module 3 will further trigger the vehicle double flash (external alarm, to remind the surrounding personnel for assistance).

[0034] 2. Complete workflow (1) Start-up phase: After the vehicle ignition is started, the control module 3 is synchronously powered on, and first performs "module self-checking" - sends a self-checking signal to the oxygen generation module 1 and the oxygen concentration detection module 2, if both modules feedback "normal", the display screen 41 displays "oxygen balance system ready", the system enters standby state; if any module feedbacks "fault" (such as oxygen probe 21 has no data transmission), the alarm module 5 triggers immediately, and the display screen 41 displays the fault module name (such as "oxygen probe fault"), prompting the driver and passenger to repair.

[0035] (2) Detection and adjustment phase: After the self-checking is passed, the oxygen concentration detection module 2 starts to collect the oxygen concentration data in the cab at a frequency of 1 time / 30 seconds, and transmits the data to the control module 3; after receiving the data, the control module 3 compares it with the preset threshold (21%±0.5%), and executes the following adjustment logic: When the real-time oxygen concentration < 20.5% (lower threshold): the control module 3 sends "control signal to increase power" to the oxygen generation module 1, and the power of the oxygen generation module 1 is gradually increased from standby state (50W) to 80W, and the oxygen supply is increased to 2L / min synchronously; the oxygen is transported to the cab through the pipeline and diffused to the whole space through the air outlet of the air conditioner; in this process, the display screen 41 updates the oxygen concentration value and the power of the oxygen generation module 1 in real time (such as "current power: 70W").

[0036] When 20.5%≤real-time oxygen concentration≤21.5% (threshold range): the control module 3 sends "control signal to maintain current power" to the oxygen generation module 1, and the oxygen generation module 1 keeps the current power (such as 60W) stable, and the oxygen supply is maintained (such as 1.5L / min) synchronously, avoiding oxygen waste; at this time, the display screen 41 displays "oxygen concentration is stable".

[0037] When the real-time oxygen concentration > 21.5% (upper threshold): the control module 3 sends "stop signal" to the oxygen generation module 1, and the oxygen generation module 1 stops generating oxygen and enters standby state; if the oxygen concentration falls below 21% subsequently, the oxygen generation module 1 restarts and repeats the above adjustment logic.

[0038] (3) Abnormal processing phase: During the operation of the system, the control module 3 continuously monitors the state of each module and the safe range of oxygen concentration (18%-28%), if the following abnormalities occur, the alarm is triggered immediately and the corresponding action is executed: Oxygen concentration detection module 2 fault (such as data interruption): the control module 3 cannot receive the oxygen concentration data, and immediately triggers the alarm, and the oxygen generation module 1 starts "emergency oxygen supply" (maintains 50W power, oxygen supply 1L / min) to avoid complete oxygen cutoff; Oxygen module 1 failure (e.g. unable to start or power unresponsive) and real-time oxygen concentration <20.5%: control module 3 triggers an alarm, and the display screen 41 prompts "oxygen module failure, please open the window for ventilation", guiding the driver and passenger to take emergency measures; Real-time oxygen concentration <18% or >28% (outside the safety range): control module 3 triggers the highest level of alarm (continuous beeping of the horn, constant light of the alarm light), and at the same time forces the opening of the car internal circulation ventilation (if the oxygen concentration is too low) or external circulation ventilation (if the oxygen concentration is too high) until the oxygen concentration returns to the safety range.

[0039] (4) Shutdown phase: after the vehicle is turned off, the control module 3 is delayed for 30 seconds to shut down (to ensure the last oxygen concentration data collection), if the oxygen concentration is within the normal range before shutdown, it is directly powered off; if the oxygen concentration is still below 20.5%, the display screen 41 displays "low oxygen concentration, please check the system next time you start", and then delays for 10 seconds to shut down.

[0040] Example Two: Hospital General / Special Ward Scenario (Building Space Target Space) This embodiment is suitable for medical scenarios with individualized oxygen concentration needs, solving the problems of slow recovery of hypoxia in patients, insufficient ventilation in general wards, and high oxygen demand in special wards.

[0041] 1. Overall configuration of the device Oxygen module 1: select a medium-sized model according to the ward volume (15-30 m³), and install it inside the ward (specifically fixed in the corner of the ward near the power socket, to avoid occupying the patient's activity space); since there is already an air conditioning system in the ward, the oxygen module 1 is installed "inside the air conditioner", specifically connecting the oxygen outlet of the oxygen module 1 to the air conditioner's return air duct through an adapter, using the air conditioner return air flow to bring oxygen into the air conditioner, and then uniformly delivering it to the ward through the air conditioner outlet; the oxygen module 1 has a power range of 100W-150W and a maximum oxygen supply of 3L / min-5L / min, which can be adjusted according to the type of ward (general / special).

[0042] Oxygen concentration detection module 2: contains 2 oxygen probes 21 (selected as medical-grade electrochemical sensors with an accuracy of ≤±0.3%, meeting the detection requirements of medical scenarios); the installation positions of the 2 oxygen probes 21 are: ① the side wall of the patient's bed (1.2 m away from the mattress height, corresponding to the patient's breathing area, to ensure that the detection data match the actual inhaled oxygen concentration); ② the wall beside the window of the ward (≥1 m away from the window, to avoid straight blowing of external air when the window is opened, causing errors); the sampling frequency of the 2 oxygen probes 21 is 1 / 20 seconds, and the sampling data is transmitted to the control module 3 through shielded wires (the wires are routed along the interior of the ward's kickboard, which is both aesthetically pleasing and avoids damage), and the control module 3 takes the average of the data from the 2 probes as the "real-time oxygen concentration", improving detection accuracy.

[0043] Control module 3: Adopt independent chassis design (size about 15 cm x 10 cm x 5 cm), fixed on the wall beside the nurse station in the ward (convenient for medical staff to check and maintain); the connection mode of control module 3 with oxygen generation module 1 and oxygen concentration detection module 2 is "wired electrical connection" (powered and data transmission through the original weak current line of the ward, without additional wiring); two types of threshold values are preset in control module 3: ① Regular scene threshold value (21% ± 0.5%, suitable for ordinary ward); ② Special scene threshold value (23%-25%, suitable for respiratory department, postoperative recovery and other special wards), medical staff can switch threshold value type through human-computer interaction module 4.

[0044] Human-computer interaction module 4: Control panel designed independently (installed on the desktop of the nurse station and the bedside of the ward), the control panel at the nurse station includes display screen 41 (5-inch color screen) and operation buttons 42 (6 physical buttons, "power", "threshold value switching", "up", "down", "fault reset", "mute"); the control panel at the bedside of the ward only retains display screen 41 (3.5-inch monochrome screen) and "mute" button (to avoid patients from misoperating other functions); the real-time display content of display screen 41 includes: current oxygen concentration, threshold value type ("ordinary" / "special"), working status of oxygen generation module 1, and individual data of two oxygen probes 21 (to facilitate medical staff to judge whether the probe is abnormal); the "threshold value switching" function of operation buttons 42 can only be triggered at the nurse station, and password input is required after switching (to prevent unauthorized operation), and the adjustment range of the special scene threshold value is limited to 23%-25%.

[0045] Alarm module 5: includes two parts - ① Ward alarm unit (fixed in the center of the ward ceiling, it is a sound and light integrated alarm, the alarm sound is soft "ding-dong" sound to avoid startling patients, and the light is yellow flashing); ② Nurse station alarm unit (integrated in the main machine of the nurse station, when alarming, the main machine screen pops up a prompt "XX ward oxygen balance system alarm", and a buzzing sound is emitted); the two alarm units are triggered synchronously to ensure that medical staff are aware in time.

[0046] 2. Complete workflow (1) Start and threshold setting stage: After the morning shift at the nurse station, medical staff start the system through the human-computer interaction module 4 at the nurse station, first select the "threshold value type" (such as "regular threshold value 21% ± 0.5%" for ordinary ward, "special threshold value 24% ± 1%" for respiratory department ward), if special threshold value is selected, 6-digit authorized password is required; control module 3 receives the threshold setting instruction, sends start signal to oxygen generation module 1 and oxygen concentration detection module 2, the system enters running state; display screen 41 displays "current threshold value: 24%, system running".

[0047] (2) Detection and adjustment stage: The two oxygen probes 21 of the oxygen concentration detection module 2 collect data at a rate of 1 time / 20 seconds, and the average value is obtained after transmission to the control module 3; the control module 3 compares the average value with the preset threshold value, and executes the following adjustment logic: Taking a special threshold value of 24%±1% (lower limit 23%, upper limit 25%) as an example: when the real-time oxygen concentration < 23%, the control module 3 sends a "control signal to increase power" to the oxygen generation module 1, and the power of the oxygen generation module 1 is gradually increased from 100W to 150W, and the oxygen supply is increased from 3L / min to 5L / min; the oxygen enters the air conditioning system through the air conditioning return air pipe, and is uniformly diffused to the bed area of the ward through the air outlet of the air conditioner, and the two oxygen probes 21 continuously collect data and feedback to the control module 3; When 23%≤real-time oxygen concentration≤25%, the control module 3 sends a "control signal to maintain the current power" to the oxygen generation module 1, and the oxygen generation module 1 maintains the current power (such as 120W), and the oxygen supply is maintained at 4L / min, to ensure that the oxygen concentration in the breathing area of the patient is stable; When the real-time oxygen concentration > 25% (the special threshold value has no "shutdown" limit to avoid the impact of sudden oxygen concentration drop on the patient), the control module 3 sends a "control signal to reduce power" to the oxygen generation module 1, and the power is reduced to 100W, and the oxygen supply is reduced to 3L / min, until the oxygen concentration falls to about 24%.

[0048] (3) Abnormal processing stage: During system operation, the control module 3 monitors the following abnormal conditions in real time, triggers an alarm and executes corresponding actions: Oxygen concentration detection module 2 failure (such as one probe data remaining unchanged, and the difference between the data of the other probe > 1%): the control module 3 determines that "a single probe is faulty", the alarm module 5 is triggered, and the display screen 41 displays "1# probe fault, currently running with 2# probe data", and the nurse station host records the fault information, prompting the medical staff to replace the probe; Oxygen generation module 1 failure (such as power not responding, and real-time oxygen concentration continuously below the lower limit of the threshold value): the control module 3 triggers an alarm, and at the same time automatically starts a backup oxygen cylinder in the ward (controlled by a pre-set electromagnetic valve, which needs to be connected in advance), and the backup oxygen supply is maintained at 1L / min until the medical staff repairs it; Real-time oxygen concentration < 18% or > 28%: the control module 3 triggers the highest level alarm, the nurse station host automatically dials the mobile phone of the medical staff responsible for the ward, and at the same time the alarm in the ward emits an "emergency alarm" prompt sound, guiding the patient or accompanying personnel to take emergency measures (such as opening the window and using a backup oxygen supply device).

[0049] (4) Daily maintenance stage: After the system runs for 24 hours, the control module 3 automatically generates a "operation report" (including oxygen concentration fluctuation curve, oxygen generation module 1 working time, alarm record), medical staff can export the report through the nurse station end control panel, which is used to evaluate the oxygen environment demand of patients and the system running state.

[0050] Example three: Large supermarket shopping area scene (building space type target space) This embodiment is suitable for large commercial space with high volume and high density of people, and solves the problem of customer experience decline caused by lack of oxygen during shopping peak period.

[0051] 1. Overall configuration of the device Oxygen generation module 1: adopts unit type design (includes 3 sub-oxygen generation machines, which is convenient for redundancy backup when failure), and is installed in the supermarket machine room (away from humid and dusty areas to ensure long-term stable operation); The communication mode of oxygen generation module 1 and supermarket shopping area is "air duct communication", that is, the oxygen outlets of the three sub-machines are connected to the main air duct of the central air conditioning of the supermarket after being collected, and through the air duct partition system of the central air conditioning, oxygen is inclined to the densely populated areas such as the cash register area, the fresh food area, and the rest area of the shopping area; The total oxygen generation power of the oxygen generation module 1 ranges from 500W to 800W, and the total maximum oxygen supply is 10L / min-15L / min, which can be adjusted according to the real-time passenger flow of the shopping area (through the supermarket monitoring system linkage) The number of sub-machine start (such as starting 3 machines during peak period and starting 1 machine during low period).

[0052] Oxygen concentration detection module 2: includes 5 oxygen probes 21 (selected as industrial grade sensors, temperature resistance range -10℃-50℃, suitable for supermarket environment); The installation positions of the 5 oxygen probes 21 correspond to 5 core areas of the supermarket respectively: ① entrance (monitoring the initial oxygen concentration after the external air enters); ② fresh food area (long stay time and large oxygen consumption); ③ cash register area (the most densely populated during shopping peak); ④ food area (close to cold chain equipment to avoid low temperature affecting the probe); ⑤ rest area (customer rest area, which needs to ensure comfort); The sampling frequency of each oxygen probe 21 is 1 time / 1 minute (the oxygen concentration changes slowly in large space, and high frequency sampling is not needed), and the sampling data is transmitted to the control module 3 through the wireless transmission module (LoRa protocol, strong anti-interference ability), and the control module 3 displays and adjusts the data of the 5 areas.

[0053] Control module 3: an industrial-grade PLC controller (with multi-device linkage capability) installed in the monitoring cabinet of the supermarket machine room; control module 3 is electrically connected and data-interacted with oxygen production module 1, oxygen concentration detection module 2, supermarket central air conditioning system, and monitoring system; the preset oxygen concentration threshold in control module 3 is the conventional scene threshold 21% ± 0.5%, and at the same time, different regions are set with "priority" (cashier area > fresh food area > rest area > food area > entrance), and the oxygen concentration of high-priority areas is preferentially guaranteed to meet the standard during adjustment.

[0054] Human-computer interaction module 4: integrated into the monitoring large screen (21-inch touch screen) of the supermarket machine room; the display screen 41 adopts a "partition display" interface - the left side is the real-time oxygen concentration value of the five areas (displayed in a column chart, intuitively comparing the differences between areas), and the right side is the working state of the oxygen production module 1 (the number of sub-machine starts, the current total power, and the oxygen supply amount); the operation button 42 is touch-controlled, including "manual / automatic" switching, "area priority adjustment", and "fault reset" functions; during daily operation, "automatic mode" is adopted, and control module 3 automatically adjusts according to the oxygen concentration; in special circumstances (such as a sudden increase in personnel in a certain area due to an event), the operation and maintenance personnel can switch to "manual mode" to manually increase the oxygen supply amount of that area.

[0055] Alarm module 5: including a machine room alarm unit (a red audible and visual alarm installed on the top of the monitoring cabinet) and a security room alarm unit (integrated into the security host, which emits a buzzing sound and displays the fault area when an alarm occurs); at the same time, control module 3 is associated with the mobile phone APP of the supermarket operation and maintenance personnel, and the alarm information is pushed through the APP (including fault type, area, and recommended treatment scheme), ensuring that the operation and maintenance personnel can also be aware of the situation in time when they are not in the machine room.

[0056] 2. Complete workflow (1) Start-up and preheating phase: one hour before daily business of the supermarket, the operation and maintenance personnel start the system through the human-computer interaction module 4, and control module 3 first performs "multi-module linkage self-checking" - checking whether the three sub-machines of the oxygen production module 1, the five oxygen probes 21, and the central air conditioning duct valve are normal; after the self-checking is passed, the oxygen production module 1 starts one sub-machine (power 500W, oxygen supply amount 10L / min) for preheating, and at the same time, the central air conditioning duct valve is adjusted to the "pre-oxygen supply" state (uniformly delivering a small amount of oxygen to each area, so that the initial oxygen concentration in the shopping area reaches more than 20.5%); 30 minutes before business, the system switches to "automatic operation mode".

[0057] (2) Detection and adjustment phase: during business, the five probes of the oxygen concentration detection module 2 collect data at a rate of 1 time / 1 minute, which are transmitted to control module 3; control module 3 executes the following adjustment logic according to the oxygen concentration and priority of each area: High priority area (such as cashier area) oxygen concentration <20.5%: Control module 3 first instructs the central air conditioning duct valve to increase the opening degree of the cashier area (from the regular 30% to 50%), and sends a "control signal to increase power" to the oxygen generating module 1, starts the 2nd sub-machine, and the total power is increased to 650W, and the total oxygen supply is increased to 12L / min; if the oxygen concentration in the cashier area still does not meet the standard after 30 minutes, start the 3rd sub-machine, the total power is increased to 800W, and the total oxygen supply is increased to 15L / min; Each area oxygen concentration is in the range of 20.5%-21.5%: Control module 3 maintains the current number of sub-machines and power of oxygen generating module 1, and at the same time instructs the central air conditioning duct valve to maintain the regular opening degree, to ensure stable oxygen concentration; Low priority area (such as entrance) oxygen concentration >21.5%, high priority area normal: Control module 3 instructs the central air conditioning duct valve to reduce the opening degree of the entrance (to 20%), and at the same time, if the oxygen generating module 1 starts 3 sub-machines, it can close 1 sub-machine, the total power is reduced to 650W, to avoid energy waste.

[0058] (3) Abnormal processing stage: During system operation, control module 3 monitors the following exceptions and triggers alarms: Oxygen concentration detection module 2 probe failure in a certain area (such as data interruption): Control module 3 determines that "there is no data monitoring in this area", alarm module 5 triggers, APP pushes "XX area oxygen probe failure", at the same time, control module 3 estimates the oxygen concentration in this area according to the oxygen concentration data of the adjacent area (such as the entrance, reference food area data), and temporarily adjusts the oxygen supply; Oxygen generating module 1 sub-machine failure (such as unable to start): Control module 3 automatically starts the standby sub-machine (if 1 of the 3 sub-machines fails, start the 3rd immediately, to ensure that the total power is not less than 650W), at the same time, alarm module 5 triggers, prompting the maintenance personnel to repair the faulty sub-machine; Any area oxygen concentration <18% or >28%: Control module 3 triggers an alarm, and at the same time instructs the central air conditioning system to switch to "full external circulation" (introducing external fresh air), and the oxygen generating module 1 is temporarily suspended, until the oxygen concentration returns to the safe range; if the external air oxygen concentration is too low (such as in smog), start the "internal circulation + oxygen generation" mode to avoid external polluted air entering.

[0059] (4) Shutdown and maintenance stage: After the supermarket business is over, the maintenance personnel switch the system to "shutdown mode", the oxygen generating module 1 gradually reduces the power (from 800W to 500W, and runs for 30 minutes), to ensure that the oxygen concentration in the shopping area slowly falls to the normal level; at the same time, control module 3 automatically generates "daily operation report" (including oxygen concentration in each period, sub-machine working time, alarm record, energy consumption data), the maintenance personnel can export the report for optimizing the oxygen supply adjustment strategy for the next day (such as adjusting the sub-machine start time according to the peak period of the day).

[0060] It needs to be explained that: for the scene that the oxygen production module is arranged outside the target space, the indoor can realize remote operation through the control panel of the special wireless remote controller, the matching APP or the associated equipment (such as the car central control, the ward bedside panel, the commercial super monitoring screen), can complete the oxygen production start and stop, power adjustment and equipment working state checking, and improve the use convenience.

[0061] It needs to be explained that the control mode of the present application can be automatically controlled by the controller, and the control mode of the controller can be realized by simple programming by those skilled in the art, which belongs to the common knowledge in the art, and the present application is mainly used to protect the mechanical structure, so the control mode and the circuit connection are not explained in detail.

[0062] In summary, the general space oxygen balancing device of the embodiment of the present application realizes automatic monitoring and adjustment of oxygen concentration in different closed / semi-closed spaces through the coordinated design of "oxygen production-detection-control", maintains the oxygen concentration stable in the threshold range suitable for human needs, and has multi-scene adaptability, safety redundancy and energy saving advantages.

[0063] In the description of the present application, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0064] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or features of different embodiments or examples described in the present application without contradiction.

[0065] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and deformations to the above embodiments within the scope of the present application.

Claims

1. A universal space oxygen balance device, characterized in that, It includes an oxygen generation module (1), an oxygen concentration detection module (2), and a control module (3), among which, The oxygen concentration detection module (2) is located inside the target space and is used to collect real-time oxygen concentration data of the target space and transmit the real-time oxygen concentration data to the control module (3). The control module (3) is electrically connected to the oxygen generating module (1) and the oxygen concentration detection module (2), and the control module (3) has a preset oxygen concentration threshold adapted to human needs. After receiving the real-time oxygen concentration data transmitted by the oxygen concentration detection module (2), the control module (3) compares the real-time oxygen concentration data with the preset oxygen concentration threshold, and automatically adjusts the oxygen generating power and oxygen supply of the oxygen generating module (1) according to the comparison result, so that the oxygen concentration in the target space is stably maintained within the oxygen concentration threshold range. The oxygen generating module (1) is located either outside or inside the target space, and the oxygen generating module (1) is connected to the interior of the target space through a pipe or an air duct to deliver oxygen into the target space.

2. The universal space oxygen balance device according to claim 1, characterized in that, The preset oxygen concentration threshold in the control module (3) includes a normal scenario threshold and a special scenario threshold; the normal scenario threshold is 21%±0.5%, which is suitable for normal oxygen demand scenarios; the special scenario threshold is 23%-25%, which is suitable for scenarios that require increased oxygen concentration.

3. A universal space oxygen balance device according to claim 1, characterized in that, When the oxygen generation module (1) is installed inside the target space, it is integrated into any one of the air conditioners, ventilation fans, or large ventilation devices in the target space. It is connected to the target space through one of the original air ducts or newly added pipes selected from the device to deliver oxygen to the target space.

4. A universal space oxygen balance device according to claim 1, characterized in that, The oxygen generation power and maximum oxygen supply of the oxygen generation module (1) are designed to be adapted to the volume of the target space. When the target space is a car cab or RV (volume 2-5m³), the oxygen generation power of the oxygen generation module (1) is 50W-80W and the maximum oxygen supply is 1L / min-2L / min. When the target space is a single ward or ordinary room (volume 15-30m³), the oxygen generation power of the oxygen generation module (1) is 100W-150W and the maximum oxygen supply is 3L / min-5L / min. When the target space is a large shopping mall or theater (volume 500-1000m³), the oxygen generation module (1) adopts a unit design with an oxygen generation power of 500W-800W and a maximum oxygen supply of 10L / min-15L / min.

5. A universal space oxygen balance device according to claim 1, characterized in that, The oxygen concentration detection module (2) includes at least one oxygen probe (21); the number and arrangement of the oxygen probes (21) are determined according to the area and layout of the target space: when the area of ​​the target space is ≤30m², 1-2 oxygen probes (21) are arranged, and respectively set in the central area of ​​the target space and the core area near the activity of personnel; when the area of ​​the target space is >30m², 3-5 oxygen probes (21) are arranged, and evenly distributed in different areas of the target space, so as to achieve comprehensive collection of oxygen concentration in the target space.

6. A universal space oxygen balance device according to claim 1, characterized in that, It also includes a human-computer interaction module (4); the human-computer interaction module (4) is electrically connected to the control module (3), and the human-computer interaction module (4) is set in the target space in a position that is convenient for personnel to observe and operate; the human-computer interaction module (4) includes a display screen (41) and operation buttons (42); the display screen (41) is used to display the current oxygen concentration of the target space and the working status (start / stop, current power) of the oxygen generation module (1) in real time; the operation buttons (42) are used to manually adjust the oxygen concentration threshold within the threshold range preset by the control module (3).

7. A universal space oxygen balance device according to claim 1, characterized in that, It also includes an alarm module (5); the alarm module (5) is electrically connected to the control module (3), and the alarm module (5) is located in a position easily noticed by personnel within the target space; when any of the following abnormal situations occur, the control module (3) sends a trigger signal to the alarm module (5), and the alarm module (5) emits an audible and visual alarm signal: The oxygen concentration detection module (2) malfunctioned and could not transmit real-time oxygen concentration data to the control module (3); The oxygen generation module (1) malfunctioned and could not generate oxygen normally, and the real-time oxygen concentration in the target space was lower than the lower limit of the oxygen concentration threshold preset by the control module (3). The real-time oxygen concentration within the target space is within a safe range of 18% to 28%.

8. A universal space oxygen balance device according to claim 1, characterized in that, The target space refers to enclosed and semi-enclosed building spaces and vehicle cabins.

9. A universal space oxygen balance device according to claim 1, characterized in that, The specific adjustment logic of the control module (3) for the oxygen generating module (1) is as follows: When the real-time oxygen concentration data is lower than the lower limit of the oxygen concentration threshold, the control module (3) outputs a control signal to increase the power to the oxygen generating module (1), thereby increasing the oxygen generating power of the oxygen generating module (1) and increasing the oxygen supply. When the real-time oxygen concentration data is within the range of the oxygen concentration threshold, the control module (3) outputs a control signal to maintain the current power to the oxygen generating module (1) to maintain the current oxygen generating power of the oxygen generating module (1) and keep the oxygen supply stable. When the real-time oxygen concentration data is higher than the upper limit of the oxygen concentration threshold, and the oxygen concentration threshold is not a special scenario threshold, the control module (3) outputs a shutdown signal to the oxygen generating module (1) to suspend the oxygen generating work of the oxygen generating module (1) and avoid excessive oxygen enrichment.

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