CN112169128A - Humidification function self-checking method, fault automatic diagnosis method and respiratory support equipment - Google Patents
Humidification function self-checking method, fault automatic diagnosis method and respiratory support equipment Download PDFInfo
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/14—Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
- A61M16/16—Devices to humidify the respiration air
- A61M16/161—Devices to humidify the respiration air with means for measuring the humidity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/0027—Accessories therefor, e.g. sensors, vibrators, negative pressure pressure meter
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3368—Temperature
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Abstract
The invention provides a humidification function self-checking method, a fault automatic diagnosis method and a respiratory support device, wherein the humidification function self-checking method comprises a humidification water box self-checking process and a heating pipeline self-checking process, the respiratory support device is in a treatment state, the humidification water box self-checking process and the heating pipeline self-checking process are started to detect at the same time, any detection process detects a fault, the respiratory support device exits from the treatment state, so that the fault of the humidification function process can be found in time; the automatic fault diagnosis method comprises a pressure and flow fault detection process, a temperature and humidity fault detection process, a fan fault detection process, and a humidification function self-checking method, wherein the breathing support equipment is in a treatment state, the detection processes are started simultaneously, any detection process detects a fault, and the breathing support equipment exits from the treatment state.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a humidifying function self-checking method and a fault automatic diagnosis method of household high-flow respiration support equipment and the respiration support equipment.
Background
The respiratory support technology is an important means for treating respiratory failure, and Nasal High-Flow oxygen humidification therapy (High-Flow oxygen therapy, High-Flow Nasal canula, HFNC) is a novel respiratory support technology, gas humidified by warming is transmitted through a Nasal High-Flow oxygen therapy instrument, the Flow is 30-60L/Min or more, the purposes of transmitting oxygen with stable concentration, flushing upper airway dead space and generating certain positive end-expiratory airway pressure are achieved, and meanwhile, the tolerance of a patient is good.
The current high-flow oxygen therapy instrument products are mainly medical products, and for some patients with lighter symptoms, hospitalization can generate high cost and occupy unnecessary medical resources, so that the household high-flow humidification oxygen therapy instrument is a direction and a trend of the market and can serve more and more household customers. Therefore, the safety of the household high-flow humidification oxygen therapy instrument is very important, and whether the household high-flow humidification oxygen therapy instrument is in a fault state or not needs to be noticed all the time in the whole using process.
Most of the existing high-flow humidification oxygen therapy instruments in the current market are medical machines, and for the medical machines, hospitals are generally provided with special equipment maintenance personnel, only need regular maintenance and overhaul can, but for the household machines, users generally do not have maintenance capability, so that the fault detection of the household machines in the using process needs to be biased to automation and real-time performance, and fault points can be found out more quickly, so that the damage to users is avoided.
Conventionally, patent application No. 201410072558.0 discloses a failure detection method of a ventilator, the method including the steps of: detecting the oxygen concentration of the mixed gas of air and oxygen in the oxygen mixing device, and judging whether the oxygen concentration is equal to the preset oxygen concentration; if the oxygen concentration is not equal to the preset oxygen concentration, judging that the oxygen mixing device has a fault; in the inspiration process, reading the flow rate of the first flow rate detection device, and judging whether the flow rate of the first detection device is equal to a preset flow rate or not; and if the flow rate is not equal to the preset flow rate, judging that the flow rate control device is in failure. The fault is judged by detecting the oxygen concentration and the flow velocity, but the fault is not suitable for household high-flow respiratory support equipment, and the household high-flow respiratory support equipment focuses more on all-around fault diagnosis of flow, pressure, humidification, heating, humidification and the like.
The humidifying function process comprises a humidifying water box and a heating pipeline, is an important function process of the household high-flow humidifying oxygen therapy instrument, and has the functions of heating and humidifying air, enabling the air sucked into the body of a patient to be warm and humid, reducing stimulation of cold and cold dry air to respiratory tract mucous membranes, and humidifying sputum to promote sputum excretion, so that the humidifying function process is particularly necessary and important for fault self diagnosis of the humidifying function.
Therefore, there is a need for a self-checking procedure of humidification function, and a comprehensive automatic fault diagnosis procedure suitable for a household respiratory support device, so as to report faults in time and avoid injury to users.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a humidification function self-checking method, a fault automatic diagnosis method and a respiratory support device, wherein the humidification function self-checking method can complete the humidification function self-checking so as to find the fault of the humidification function in time, and meanwhile, the fault automatic diagnosis method can carry out comprehensive automatic diagnosis on the domestic respiratory support device, report the fault and avoid the damage to a user.
In order to achieve the aim, the invention provides a humidification function self-checking method which comprises a humidification water box self-checking process and a heating pipeline self-checking process, wherein the respiratory support equipment is in a treatment state, the humidification water box self-checking process and the heating pipeline self-checking process are started to detect at the same time, and when any detection process detects a fault, the respiratory support equipment exits from the treatment state.
As a further improvement of the above-mentioned solution,
the detection steps of the self-checking flow of the humidifying water box comprise:
s11: the processor determining that the respiratory support apparatus is in a treatment state;
s12: the water box in-place detection device detects whether the water box is in an inserted state;
s121: if not, the processor reports that the water box is not inserted into the fault, and the respiratory support equipment exits the treatment;
s122: if yes, the processor judges whether the sampling value of the water box heating plate temperature sensor is abnormal or not, and the duration time exceeds T1;
s1221: if yes, the processor reports the fault of the temperature sensor of the water box heating plate, and the respiratory support equipment exits from treatment;
s1222: if not, the processor judges whether the acquired value of the water box air outlet temperature sensor is abnormal or not, and the duration time exceeds T1;
s12221: if not, returning to the step S122;
s12222: if yes, the processor reports the fault of the temperature sensor of the water box heating plate, and the respiratory support equipment exits the treatment.
As a further improvement of the above-mentioned solution,
the detection steps of the self-checking flow of the heating pipeline comprise:
s21: the processor judges that the treatment state is in;
s22: the processor acquires a temperature sampling value of a heating pipeline temperature sensor;
s23: the processor judges whether the temperature sampling value is in a normal range;
s231, if yes, returning to the step S22;
s232, if not, the processor judges whether the duration time exceeds T1;
s2321, if not, returning to the step S22;
s2322, if yes, the processor reports the heating pipeline fault, and the respiratory support equipment exits the treatment.
As a further improvement of the above scheme, in step S121, step S1221, and step S12222, the processor reports a fault of the water box heating plate temperature sensor, and when the treatment is quitted, the respiratory support apparatus makes a sound and displays an alarm.
As a further improvement of the above scheme, in step S2322, the processor reports the failure of the heating line, and when the treatment is stopped, the respiratory support apparatus makes a sound and displays an alarm.
As a further improvement of the above solution, the sampled value of the water box heating plate temperature sensor in S122, the sampled value of the water box air outlet temperature sensor in S1222, and the sampled value of the temperature in step S23 are all determined based on the sampled value of the temperature sensor, that is, the sampled values of the temperature sensor in short circuit and open circuit are used as threshold values, the sampled threshold value of the short circuit is less than 100, and the sampled threshold value of the open circuit is greater than 3800.
The invention also provides a fault automatic diagnosis method, which comprises a pressure and flow fault detection process, a temperature and humidity fault detection process, a fan fault detection process, the humidification function self-checking method, the respiratory support equipment is in a treatment state, the detection processes are started simultaneously, and the respiratory support equipment exits the treatment state when any detection process detects a fault.
As a further improvement of the above scheme, the pressure and flow fault detection process includes a pressure fault detection process and a flow fault detection process, when the respiratory support device is in a treatment state, the pressure fault detection process and the flow fault detection process start detection at the same time, and when any detection process detects a fault, the respiratory support device exits the treatment state; wherein the content of the first and second substances,
the detection steps of the pressure fault detection process comprise:
s31: the processor determining that the respiratory support apparatus is in a treatment state;
s32: the processor judges whether the flow value is a normal value;
s321, if not, the processor reports the fault of the flow sensor, and the respiratory support equipment exits the treatment;
s322, if yes, judging whether the pressure sensor acquisition value is less than the judgment pressure threshold value X for 30S continuously;
s3221, if not, returning to the step S32;
s3222, if yes, the processor reports the pressure sensor fault, and the respiratory support equipment exits the treatment;
the detection step of the flow fault detection process comprises the following steps:
s41: the processor determining that the respiratory support apparatus is in a treatment state;
s42: the processor acquires a flow sampling value of the flow sensor;
s43: the processor judges whether the flow sampling value is larger than the maximum collecting range of the flow sensor;
s431, if not, returning to the step S42;
s432, if yes, the processor judges whether the duration time exceeds T1;
s4321, if not, returning to the step S42;
s4322, if yes, the processor judges that the flow sensor is in failure, and the respiratory support equipment exits the treatment.
As a further improvement of the above, in steps S321, S3222, S431, and S43222, the respiratory support apparatus sounds and displays an alarm while the respiratory support apparatus exits the treatment.
As a further improvement of the above solution, in step S32, whether the flow value is a normal value or not, i.e., the flow sensor can normally measure the flow value, and can feed back the acquired flow value to the processor.
As a further improvement of the above solution, in step S322, the pressure threshold X is a value adopted by the pressure sensor when the pressure sensor is short-circuited in the circuit, and different pressure sensors have different pressure thresholds, so that the pressure threshold X is set by itself.
As a further improvement of the above scheme, the detecting step of the temperature and humidity fault detecting process includes:
s51: the processor judges that the respiratory therapy equipment is in a therapy state;
s52: the temperature and humidity sensor respectively collects an environment temperature value and an environment humidity value and feeds the environment temperature value and the environment humidity value back to the processor;
s53: the processor judges whether the environmental temperature value and the environmental humidity value are in a normal range;
s531, if not, judging whether the duration time exceeds T1;
s5311, if yes, the processor reports the temperature and humidity sensor fault, and the respiratory support equipment exits the treatment;
s5312, if not, returning to the step S52;
s532, if yes, the processor judges whether the treatment time exceeds T2;
s5321, if not, returning to the step S53;
s5322, if yes, the processor judges whether the current environment temperature value is less than the normal use environment temperature value by 10 ℃;
s53221, if not, returning to the step S53;
s53222, if yes, the processor reports the environmental temperature fault, and the respiratory support equipment exits the treatment.
As a further improvement of the above scheme, the detection step of the fan fault detection process includes:
s61: the processor determining that the respiratory support apparatus is in a treatment state;
s62: the processor acquires a fan turbine current value;
s63: the processor judges whether the current value is over-current;
s631: if yes, judging whether the duration time exceeds T1;
s6311: if so, reporting the fan turbine fault by the processor, and stopping treatment by the respiratory support equipment;
s6311: if not, returning to the step S62;
s632: if not, the processor judges whether the current pressure value is larger than X or not and the flow value is in the interval (-Y, Y);
s6321: if yes, go to step S631;
s6321: if not, the process returns to step S62.
As a further improvement of the above solution, in step S63, it is determined whether the current value is over-current, specifically, it is determined that the current value cannot exceed the maximum current when the turbine is operating at full power.
As a further improvement of the above scheme, in step S632, the pressure value X is a pressure value obtained by converting the pressure sampling AD value, and different fan turbines have different judgment values; the flow value Y is 5L/Min.
The invention also provides a breathing support device, which comprises a processor and an automatic fault diagnosis module, wherein the automatic fault diagnosis module adopts the automatic fault diagnosis method, the processor is electrically connected with the automatic fault diagnosis module, the automatic fault diagnosis module starts detection when the breathing support device is in a treatment state, and the breathing support device exits the treatment state when the automatic fault diagnosis module detects a fault.
It should be noted that the user can use the device at the time T1 and the time T2, usually T1 selects 30s and T2 selects 30 Min.
Due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the humidification water box self-checking process and the heating pipeline self-checking process are started to detect simultaneously, and when any detection process detects a fault, the breathing support equipment exits from the treatment state. The self-checking flow of the humidifying water box comprises the steps of detecting the insertion state of the water box, detecting the temperature sampling value of a heating plate of the water box and detecting whether the temperature sampling value of an air outlet of the water box is in a normal state or not, and enabling the respiratory support equipment to quit the treatment if the temperature sampling value is not in the normal state; the self-checking process of the heating pipeline detects whether the temperature sampling value of the heating pipeline is in a normal state or not, the heating pipeline is not in the normal state, the breathing support equipment exits treatment, the principle is simple, but the fault of the humidifying function process can be comprehensively detected, so that discomfort or injury to a user due to improper humidification can be avoided.
2. The invention relates to a fault automatic diagnosis method, which comprises a pressure and flow fault detection process, a temperature and humidity fault detection process, a fan fault detection process, a humidification function self-detection method, a respiratory support device in a treatment state, wherein the detection processes are started simultaneously, any detection process detects a fault, the respiratory support device exits the treatment state, the four fault detection processes automatically diagnose the respiratory support device from four aspects, and compared with the single fault detection process, the fault automatic diagnosis method can automatically diagnose the commonly occurring fault of the household respiratory support device in an all-round way; and the four fault detection processes are simultaneously detected, and no priority and sequence exist, so that any fault is ensured, the respiratory support equipment can quit treatment, the risk brought to the user by the equipment fault is greatly reduced, and the user can safely carry out self-treatment at home.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow of detecting a fault in a humidifying water box according to the humidifying function self-inspection method of the present invention;
FIG. 2 is a flow of detecting a fault in a heating pipeline according to the self-testing method for the humidification function of the present invention;
FIG. 3 is a block diagram of the method of automatic fault diagnosis of the present invention;
FIG. 4 is a flow chart of pressure fault detection for the automatic fault diagnosis method of the present invention;
FIG. 5 is a flow fault detection flow of the automatic fault diagnosis method of the present invention;
FIG. 6 is a temperature and humidity fault detection process of the fault automatic diagnosis method of the present invention;
fig. 7 shows a fan failure detection process of the automatic failure diagnosis method of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention is further described below with reference to the following figures and specific embodiments:
example 1:
referring to fig. 1 and 2, the invention provides a humidification function self-checking method, the humidification function is an important function module of a household high-flow respiratory support device, and the humidification function module is used for heating humidified gas, so that the gas inhaled into a patient is warm and humid, stimulation of cold and dry gas to respiratory tract mucous membranes is reduced, and sputum is promoted to be discharged, the humidification function module comprises a humidifying water box and a heating pipeline, therefore, the humidification function self-checking method comprises a humidifying water box self-checking flow and a heating pipeline self-checking flow, the respiratory support device is in a treatment state, the humidifying water box self-checking flow and the heating pipeline self-checking flow are started to detect at the same time, any detection flow detects a fault, and the respiratory support device is out of the treatment state.
Referring to fig. 1, the detection flow of the self-checking flow of the humidifying water box is as follows:
firstly, the processor judges whether the respiratory support equipment is in a treatment state, the water box in-place detection device can detect whether the water box is normally inserted or not, and feeds a detection result back to the processor, if the water box in-place detection device detects that the water box is not inserted, the processor controls the respiratory support equipment to immediately quit treatment so as to avoid influencing a patient, immediately reports the water box non-insertion fault, and sends out sound and displays an alarm;
if the processor receives the information that the water box is inserted, the processor judges the sampling value of the water box heating plate temperature sensor to see whether the conditions of short circuit, open circuit and no heating exist, if the time that the sampling value of the sensor is continuously abnormal exceeds T1, the judgment time T1 can be set by itself, in the embodiment, T1 is selected to be 30s, the processor reports the fault of the water box heating plate temperature sensor, controls the breathing support equipment to immediately quit the treatment, and sends out sound and displays an alarm;
after detecting that the heating plate is not abnormal, the processor judges a sampling value fed back by the temperature sensor at the air outlet of the water box to see whether the sampling value is abnormal or not, if so, the processor reports the fault of the temperature sensor at the air outlet of the water box, controls the breathing support equipment to immediately quit treatment, and gives out sound and displays an alarm; if normal, the processor continues to judge the sampling value of the water box heating plate temperature sensor and circulates in sequence.
Referring to fig. 2, the detection flow of the self-checking flow of the heating pipeline is as follows:
the method comprises the steps that firstly, a processor judges that the respiratory support equipment is in a treatment state, a self-checking flow of a heating pipeline starts detection, firstly, a sampling value of a temperature sensor of the heating pipeline is obtained, whether the sampling value is in a normal range is judged, if the sampling value is abnormal and the duration time exceeds T1, the processor reports a fault of the heating pipeline, controls the respiratory support equipment to quit treatment immediately, and gives out sound and displays an alarm. The judgment range of the sampling value can be set by itself according to the temperature sensor of the selected model, the duration time T1 can also be set by itself, and in the embodiment, the duration time T1 is set to 30 s.
It should be noted that the sampling value of the water box heating plate temperature sensor, the sampling value of the water box air outlet temperature sensor, and the sampling value of the temperature are all judged based on the sampling value of the temperature sensor, that is, the sampling values of the temperature sensor in short circuit and open circuit are used as threshold values, the sampling threshold value of the short circuit is less than 100, and the sampling threshold value in open circuit is more than 3800.
Example 2:
referring to fig. 3, the invention further provides an automatic fault diagnosis method, which includes a pressure and flow fault detection process, a temperature and humidity fault detection process, a fan fault detection process, the humidification function self-checking method, wherein the respiratory support device is in a treatment state, the detection processes are started simultaneously, any detection process detects a fault, and the respiratory support device exits the treatment state. The four fault detection processes carry out fault automatic diagnosis on the breathing support equipment from four aspects, and compared with the fault detection process in a single aspect, the fault automatic diagnosis method can carry out omnibearing automatic diagnosis on the frequently-occurring fault of the household breathing support equipment; and the four fault detection processes are simultaneously detected, and no priority and sequence exist, so that any fault is ensured, the respiratory support equipment can quit treatment, the risk brought to the user by the equipment fault is greatly reduced, and the user can safely carry out self-treatment at home.
As a preferred embodiment, the pressure and flow fault detection process includes a pressure fault detection process and a flow fault detection process, when the respiratory support device is in a treatment state, the pressure fault detection process and the flow fault detection process start detection at the same time, and when any detection process detects a fault, the respiratory support device exits the treatment state; wherein the content of the first and second substances,
referring to fig. 4, the pressure parameter is an important auxiliary data for the household high flow rate respiratory support device during the therapeutic use, and the pressure value and the flow rate value have a certain relationship, so the detection of the pressure failure is also related to the flow rate, specifically,
the detection flow of the pressure fault detection flow is as follows:
the processor judges whether the respiratory support equipment is in a treatment state, firstly, the processor determines whether the flow is in a normal state, if the flow is normal, the sampling value duration time T1 of the pressure sensor is less than a judgment threshold value X, the processor determines that the pressure sensor is in a fault, the processor controls the respiratory support equipment to quit the treatment so as to avoid influencing a patient, immediately reports the pressure sensor fault, and gives out sound and displays an alarm. The judgment range of the sampling value can be set by itself according to the temperature sensor of the selected model, the duration time T1 can also be set by itself, and in the embodiment, the duration time T1 is set to 30 s.
Referring to fig. 5, flow is an important performance parameter of a household high flow respiratory support device during use, and the accuracy of the flow must be ensured. When the flow can not be accurately detected, the flow sensor is considered to be in fault, and corresponding flow sensor alarm is made, so that the flow fault detection flow is as follows:
the processor judges that the respiratory support equipment is in a treatment state, the alarm detection of the fault of the flow sensor is that the fan turbine starts to work after the treatment is started, wind in the air flue starts to be sent out, the flow sensor starts to acquire a sampling value, and when the sampling value obtained by judgment is wrong, for example, the sampling value is larger than the maximum range of the sampling value. And the wrong sampling value reaches the duration T1, the processor judges that the flow sensor has a fault, controls the respiratory support equipment to immediately quit treatment so as to avoid influencing the patient, and simultaneously immediately reports the fault of the flow sensor, sounds and displays an alarm. The judgment sampling value and the judgment duration can be set by itself, and in the present embodiment, the duration T1 is 30 s.
As a preferred embodiment, whether the flow sampling value is a normal value or not, i.e. the flow sensor can normally measure the flow value, and can feed back the collected flow value to the processor.
As a preferred embodiment, the pressure threshold value X is a value adopted when the pressure sensor is short-circuited in the circuit, and different pressure sensors have different pressure threshold values, so that the pressure threshold value X is set by itself.
Referring to fig. 6, the humiture fault detection module mainly detects to the humiture sensor of breathing support equipment itself and the humiture of environment, and to domestic high flow breathing support equipment, the humiture of service environment also is a very important reference index, must guarantee to breathe support equipment and be the use of going on under reasonable humiture environment, otherwise can influence treatment, consequently, humiture fault detection flow detects the flow as follows:
firstly, the processor judges that the respiratory support equipment is in a treatment state, the temperature and humidity sensor respectively collects an environmental temperature value and an environmental humidity value and feeds the environmental temperature value and the environmental humidity value back to the processor, the processor judges whether the two values are in a normal range (judgment threshold value) or not, if sampling values of the environmental temperature value and the environmental humidity value are abnormal and the duration time exceeds T1, in the embodiment, the duration time is 30s, the processor reports the fault of the temperature and humidity sensor, and controls the respiratory support equipment to quit treatment and send out sound and display alarm.
If the sampling values of the environmental temperature value and the environmental humidity value are normal, and the treatment duration exceeds T2, in this embodiment, the treatment duration T2 is 30Min, the processor compares the sampling value of the environmental temperature detected by the environmental temperature and humidity sensor with a judgment threshold (the judgment threshold set in this embodiment is a temperature sampling value corresponding to 10 ℃), when the sampling value is lower than the judgment threshold, the processor reports an environmental temperature fault, that is, the environmental temperature used by the respiratory support device cannot be reached, the processor controls the respiratory support device to quit treatment and makes a sound and display an alarm, wherein the judgment threshold, the abnormal duration T1, and the treatment duration T2 can be set by itself.
Referring to fig. 7, the fan turbine is an important component of the household high-flow respiratory support device, and if the fan fails, the normal use of the product will be directly affected, so that the fan failure detection is indispensable, and therefore, the detection flow of the fan failure detection flow is as follows:
firstly, the processor judges that the respiratory support equipment is in a treatment state, the process also starts to detect the fan fault in a treatment starting state, two judgment conditions are used for judging whether the fan fault occurs or not, one judgment condition is to detect whether the turbine current value of the fan generates overcurrent or not, the other judgment condition is to detect whether the current flow value and the current pressure value are in a correct range or not, namely, the processor judges whether the current pressure value is greater than X or not and the flow value is in a section (-Y, Y), if the two conditions meet any one of the conditions and the duration time exceeds T1, in the embodiment, the duration time T1 is taken as 30s, the processor judges that the fan fault occurs, controls the respiratory support equipment to immediately quit the treatment so as to avoid the influence on a patient, immediately reports the fan fault, and sends sound and displays an alarm; judging whether the current value is over-current or not, specifically judging whether the current value cannot exceed the maximum current when the turbine runs at full power, wherein the judgment values of flow and pressure can be set according to different hardware and machines, the pressure value X is a pressure value obtained by converting a pressure sampling AD value, and different fan turbines have different judgment values; in this embodiment, the flow rate value Y is 5L/Min.
Example 3:
the invention also provides a breathing support device, which comprises a processor and an automatic fault diagnosis module, wherein the automatic fault diagnosis module adopts the automatic fault diagnosis method, the processor is electrically connected with the automatic fault diagnosis module, the automatic fault diagnosis module starts detection when the breathing support device is in a treatment state, and the breathing support device exits the treatment state when the automatic fault diagnosis module detects a fault.
The foregoing is a detailed description of the invention, and specific examples are used herein to explain the principles and implementations of the invention, the above description being merely intended to facilitate an understanding of the principles and core concepts of the invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A humidification function self-checking method is characterized by comprising a humidification water box self-checking flow and a heating pipeline self-checking flow, wherein when respiratory support equipment is in a treatment state, the humidification water box self-checking flow and the heating pipeline self-checking flow are started to detect at the same time, any self-checking flow detects a fault, and the respiratory support equipment exits the treatment state.
2. The humidification function self-test method as claimed in claim 1, wherein the detection step of the humidification water box self-test process comprises:
s11: the processor determining that the respiratory support apparatus is in a treatment state;
s12: the water box in-place detection device detects whether the water box is in an inserted state;
s121: if not, the processor reports that the water box is not inserted into the fault, and the respiratory support equipment exits the treatment;
s122: if yes, the processor judges whether the sampling value of the water box heating plate temperature sensor is abnormal or not, and the duration time exceeds T1;
s1221: if yes, the processor reports the fault of the temperature sensor of the water box heating plate, and the respiratory support equipment exits from treatment;
s1222: if not, the processor judges whether the acquired value of the water box air outlet temperature sensor is abnormal or not, and the duration time exceeds T1;
s12221: if not, returning to the step S122;
s12222: if yes, the processor reports the fault of the temperature sensor of the water box heating plate, and the respiratory support equipment exits the treatment.
3. The humidification function self-test method as claimed in claim 1 or 2, wherein the detection step of the heating pipeline self-test process comprises:
s21: the processor judges that the treatment state is in;
s22: the processor acquires a temperature sampling value of a heating pipeline temperature sensor;
s23: the processor judges whether the temperature sampling value is in a normal range;
s231, if yes, returning to the step S22;
s232, if not, the processor judges whether the duration time exceeds T1;
s2321, if not, returning to the step S22;
s2322, if yes, the processor reports the heating pipeline fault, and the respiratory support equipment exits the treatment.
4. The humidification function self-test method of claim 3, wherein in the steps S121, S1221 and S12222, the processor reports a fault of the water box heating plate temperature sensor, and when the treatment is quit, the breathing support device makes a sound and displays an alarm; in step S2322, the processor reports the failure of the heating line, and when the treatment is stopped, the respiratory support apparatus makes a sound and displays an alarm.
5. An automatic fault diagnosis method, which is characterized by comprising a pressure and flow fault detection process, a temperature and humidity fault detection process and a fan fault detection process, wherein the humidification function self-detection method according to any one of claims 1 to 4 is used, the respiratory support equipment is in a treatment state, the four detection processes are started to detect at the same time, and when a fault is detected in any one detection process, the respiratory support equipment exits the treatment state.
6. The method according to claim 5, wherein the pressure and flow fault detection processes include a pressure fault detection process and a flow fault detection process, when the respiratory support device is in the treatment state, the pressure fault detection process and the flow fault detection process start detection at the same time, and when any one of the detection processes detects a fault, the respiratory support device exits the treatment state.
7. The method according to claim 6, wherein the detecting step of the pressure failure detection process includes:
s31: the processor determining that the respiratory support apparatus is in a treatment state;
s32: the processor judges whether the flow value is a normal value;
s321, if not, the processor reports the fault of the flow sensor, and the respiratory support equipment exits the treatment;
s322, if yes, judging whether the pressure sensor acquisition value is less than the judgment pressure threshold value X for 30S continuously;
s3221, if not, returning to the step S32;
s3222, if yes, the processor reports the pressure sensor fault, and the respiratory support equipment exits the treatment;
the flow fault detection module comprises the following detection steps:
s41: the processor determining that the respiratory support apparatus is in a treatment state;
s42: the processor acquires a flow sampling value of the flow sensor;
s43: the processor judges whether the flow sampling value is larger than the maximum collecting range of the flow sensor;
s431, if not, returning to the step S42;
s432, if yes, the processor judges whether the duration time exceeds T1;
s4321, if not, returning to the step S42;
s4322, if yes, the processor judges that the flow sensor is in failure, and the respiratory support equipment exits the treatment.
8. The method according to any one of claims 5 to 7, wherein the detecting step of the temperature and humidity fault detecting process comprises:
s51: the processor judges that the respiratory therapy equipment is in a therapy state;
s52: the temperature and humidity sensor respectively collects an environment temperature value and an environment humidity value and feeds the environment temperature value and the environment humidity value back to the processor;
s53: the processor judges whether the environmental temperature value and the environmental humidity value are in a normal range;
s531, if not, judging whether the duration time exceeds T1;
s5311, if yes, the processor reports the temperature and humidity sensor fault, and the respiratory support equipment exits the treatment;
s5312, if not, returning to the step S52;
s532, if yes, the processor judges whether the treatment time exceeds T2;
s5321, if not, returning to the step S53;
s5322, if yes, the processor judges whether the current environment temperature value is less than the normal use environment temperature value by 10 ℃;
s53221, if not, returning to the step S53;
s53222, if yes, the processor reports the environmental temperature fault, and the respiratory support equipment exits the treatment.
9. The method according to claim 8, wherein the detecting step of the fan failure detecting process comprises:
s61: the processor determining that the respiratory support apparatus is in a treatment state;
s62: the processor acquires a fan turbine current value;
s63: the processor judges whether the current value is over-current;
s631: if yes, judging whether the duration time exceeds T1;
s6311: if so, reporting the fan turbine fault by the processor, and stopping treatment by the respiratory support equipment;
s6311: if not, returning to the step S62;
s632: if not, the processor judges whether the current pressure value is larger than X or not and the flow value is in the interval (-Y, Y);
s6321: if yes, go to step S631;
s6321: if not, the process returns to step S62.
10. A respiratory support apparatus, comprising a processor and an automatic fault diagnosis module, wherein the automatic fault diagnosis module adopts the automatic fault diagnosis method according to any one of claims 5 to 9, the processor is electrically connected with the automatic fault diagnosis module, the automatic fault diagnosis module starts detection when the respiratory support apparatus is in a treatment state, and the respiratory support apparatus exits the treatment state when the automatic fault diagnosis module detects a fault.
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Application publication date: 20210105 |