CN115299903A - Method for detecting failure of blood pressure detection device, and storage medium - Google Patents

Method for detecting failure of blood pressure detection device, and storage medium Download PDF

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Publication number
CN115299903A
CN115299903A CN202110495135.XA CN202110495135A CN115299903A CN 115299903 A CN115299903 A CN 115299903A CN 202110495135 A CN202110495135 A CN 202110495135A CN 115299903 A CN115299903 A CN 115299903A
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China
Prior art keywords
valve
pressure
air bag
air
value
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CN202110495135.XA
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Chinese (zh)
Inventor
朱增友
文微
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Edan Instruments Inc
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Edan Instruments Inc
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Priority to CN202110495135.XA priority Critical patent/CN115299903A/en
Publication of CN115299903A publication Critical patent/CN115299903A/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/021—Measuring pressure in heart or blood vessels
    • A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/74—Details of notification to user or communication with user or patient ; user input means
    • A61B5/7405—Details of notification to user or communication with user or patient ; user input means using sound
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/74—Details of notification to user or communication with user or patient ; user input means
    • A61B5/742—Details of notification to user or communication with user or patient ; user input means using visual displays
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G01M13/003—Machine valves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
    • A61B2560/02—Operational features
    • A61B2560/0266—Operational features for monitoring or limiting apparatus function
    • A61B2560/0276—Determining malfunction

Abstract

The application discloses a fault detection method of a blood pressure detection device, the blood pressure detection device and a storage medium. The blood pressure detection device comprises an air bag, at least a first valve and a second valve are arranged on the air bag, and the fault detection method comprises the following steps: in the inflation stage, inflating the air bag to enable the air pressure in the air bag to reach a set first pressure value, wherein the set first pressure value is smaller than the maximum pressure value required by the blood pressure detection standard; opening the first valve to deflate the air bag; and determining the fault condition of the first valve according to the change of the air pressure in the air bag in the deflation process. Through the mode, the fault detection of the valve can be carried out in the inflation stage of blood pressure detection, and the damage to a detected person caused by higher pressure due to inflation in the failure of the valve is prevented.

Description

Failure detection method for blood pressure detection device, and storage medium
Technical Field
The present invention relates to the field of detection technologies of blood pressure detection devices, and in particular, to a method for detecting a failure of a blood pressure detection device, and a storage medium.
Background
NIBP (automatic non-invasive blood pressure) detection has the advantages of being non-invasive, simple to operate and the like, and is widely applied to occasions such as patient monitoring, outpatient service, spot measurement and the like at present. Non-invasive blood pressure measurement requires the cuff to be strapped to the arm of the patient and then inflated and deflated to obtain the patient's blood pressure value.
Non-invasive blood pressure measurement blocks arterial blood flow by pressurizing the cuff, which can cause harm to the human body if the pressure in the cuff is not properly controlled. Therefore, detailed standards such as ANSI/AAMI SP10:2002 and IEC 80601-2-30 (edition 1.0 2009-01) are internationally designed and evaluated for the safety and effectiveness of the blood pressure measurement function, and the two standards particularly require safety. The following are the requirements for safety in the standard IEC 80601-2-30 (edition 1.0 2009-01):
1) In normal use, in neonatal mode, the maximum pressure of non-invasive blood pressure may not exceed 150mmHg; in other modes, the maximum pressure of the non-invasive blood pressure may not exceed 300mmHg;
2) Under a single fault condition:
a) The time for the pressure to exceed the +10% range of maximum pressure (i.e. 165mmHg neonates, other types 330 mmHg) cannot be greater than 3 seconds;
b) The time for the pressure to exceed the maximum pressure cannot exceed 15 seconds.
The national standard requires that the time for the blood pressure system to deflate from 260mmHg to 15mmHg cannot exceed 10s, which makes the requirement on the deflation characteristic of the valve.
The valve may fail at any time, which may cause the pressure not to be released quickly, and may injure the patient during the blood pressure detection process.
Disclosure of Invention
The application mainly provides a fault detection method of a blood pressure detection device, the blood pressure detection device and a storage medium, and can solve the problem that valve fault detection cannot be performed before blood pressure detection in the prior art.
In order to solve the above technical problem, a first aspect of the present application provides a fault detection method for a blood pressure detection device, where the blood pressure detection device includes an air bag, and the air bag is provided with at least a first valve and a second valve, and the fault detection method includes: in an inflation stage, inflating the air bag to enable the air pressure in the air bag to reach a set first pressure value, wherein the set first pressure value is smaller than a maximum pressure value required by a blood pressure detection standard; opening the first valve to deflate the balloon; and determining the fault condition of the first valve according to the change of the air pressure in the air bag in the deflation process.
In order to solve the above technical problem, a second aspect of the present application provides a blood pressure detecting device, which includes a processor and a memory, where the memory stores program data, and the processor is configured to execute the program data, so as to implement the fault detecting method of the blood pressure detecting device provided by the first aspect.
In order to solve the above technical problem, a third aspect of the present application provides a computer-readable storage medium, in which program data are stored, and the program data, when executed by a processor, are used for implementing the fault detection method of the blood pressure detection device provided by the first aspect.
The beneficial effect of this application is: be different from prior art's condition, this application is aerifyd the gasbag at blood pressure detection's the stage of aerifing for atmospheric pressure in the gasbag reaches and sets for behind the first pressure value, opens first valve, in order to deflate the gasbag, detects the atmospheric pressure situation of change in the gasbag confirms the fault condition of first valve according to the atmospheric pressure situation of change, can carry out fault detection to the valve when the atmospheric pressure is lower in the gasbag, in case detect the valve trouble then can not allow to continue to aerify to higher pressure, has avoided the emergence of harm from the source.
Drawings
FIG. 1 is a schematic block diagram of a flow chart of an embodiment of a fault detection method of a blood pressure detection device according to the present application;
FIG. 2 is a schematic block diagram of a flow chart of another embodiment of a fault detection method of the blood pressure detection device of the present application;
FIG. 3 is a block diagram illustrating the flow of an embodiment of fault detection for a first valve of the blood pressure monitor of the present application;
FIG. 4 is a schematic block flow diagram of another embodiment of fault detection for a first valve of the blood pressure monitor of the present application;
FIG. 5 is a block diagram illustrating the flow of an embodiment of fault detection for a second valve of the blood pressure monitor of the present application;
FIG. 6 is a block schematic flow diagram of another embodiment of fault detection for a second valve of the blood pressure monitor of the present application;
FIG. 7 is a block schematic flow diagram of yet another embodiment of fault detection of a second valve of the blood pressure monitor of the present application;
FIG. 8 is a block diagram illustrating a flow chart of another embodiment of a fault detection method for a blood pressure monitor of the present application;
FIG. 9 is a schematic block diagram of the circuit structure of an embodiment of the blood pressure monitor of the present application;
FIG. 10 is a schematic block diagram of a circuit configuration of an embodiment of a computer-readable storage medium of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.
The terms "first" and "second" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features shown. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
The fault detection method of the blood pressure detection device takes the non-invasive blood pressure detection device as an implementation main body, the non-invasive blood pressure detection needs to bind a cuff to an arm of a detected person, and then the cuff is inflated and deflated to obtain blood pressure parameters of a patient, such as systolic pressure, diastolic pressure and the like. The blood pressure detection device comprises an air bag, wherein the air bag is used for surrounding a detection part of a detected person during blood pressure detection and inflating and deflating the detection part to detect the blood pressure, the air bag can be provided with two or more valves, and the air bag comprises at least a first valve and a second valve and is used for deflating the air bag.
It should be noted that, the air bag of the blood pressure detecting apparatus is usually configured with two valves, one of the valves is a commonly used deflation valve, and the other valve is an added valve for ensuring the safety of the blood pressure detecting apparatus when the commonly used deflation valve fails. Similarly, the second valve may be a vent valve commonly used in the air bag, or may be an additional valve for ensuring the safety of the blood pressure detection device.
The blood pressure detection process comprises an inflation stage and a deflation stage, the inflation stage inflates the air bag to a pressure value required by the blood pressure detection, the deflation stage deflates the air bag one by one to perform multi-step blood pressure detection, fault detection is performed on the first valve and the second valve in the inflation stage, specifically, after the inflation stage inflates the air bag to a lower pressure level, the air bag is deflated for a short time to detect the fault condition of the valve, and after the valve fault detection is finished, the air bag is continuously inflated to the pressure value required by the blood pressure detection under the condition of safety determination to perform the blood pressure detection.
The following is a description of various embodiments of failure detection for an airbag, and it is to be understood that the various embodiments described below are all operated during the inflation phase.
Referring to fig. 1, fig. 1 is a schematic flow chart of an embodiment of a fault detection method of a blood pressure detection device according to the present application. The fault detection method of the blood pressure detection device of the embodiment comprises the following steps:
s11: and in the inflation stage, inflating the air bag to enable the air pressure in the air bag to reach a set first pressure value.
In the step, after the cuff is determined to be sleeved to the corresponding detection position of the arm or leg of the detected person and all the valves are closed, the air bag is inflated, so that the air pressure in the air bag reaches a set first pressure value.
Wherein, the first pressure value is set to be lower than the maximum pressure value required by the blood pressure detection standard. Specifically, the maximum pressure values required by the blood pressure detection standards of different detection modes are different, for example, the detection modes may include an infant mode and an adult mode, the maximum pressure values corresponding to the infant mode and the adult mode are different, and the maximum pressure values are automatically selected after the detection mode is selected.
Optionally, the first pressure value is set to be smaller than a pressure value required by blood pressure detection, and the pressure value required by blood pressure detection is a pressure value to which the air bag needs to be inflated when the blood pressure detection is performed. The pressure value required by blood pressure detection can be determined according to a blood pressure detection algorithm, specifically, after a blood pressure detection is performed on a patient, the pressure value required by blood pressure detection can be determined according to the detection result, and the pressure value required by blood pressure detection is determined in an adaptive manner, for example, the systolic pressure (or average pressure) plus DeltaP of the measurement result is used as the pressure value required by the next blood pressure detection; wherein, deltaP is a fixed value generally, such as 20-40 mmHg, and can be different according to the type of the patient or the blood pressure value of the measurement result. Alternatively, the pressure value required for blood pressure detection may also be determined according to a selected detection mode, for example, the detection mode may include an infant mode and an adult mode, each detection mode has a corresponding pressure value required for blood pressure detection, and after the detection mode is selected, the pressure value required for blood pressure detection is automatically selected. This is only an illustrative example and it is well within the purview of the skilled person to calculate the required pressure value for blood pressure detection.
Wherein, the first pressure value can be any one pressure value of 30-60 mmHg.
Optionally, if the air pressure in the air bag does not reach the set first pressure value within the preset inflation time, stopping inflation and starting an alarm. Specifically, when the airbag starts to be inflated in the step, an inflation timer is started, and if the inflation time reaches the preset inflation time, the air pressure in the airbag does not reach the set first pressure value, it is indicated that the airbag has an air leakage condition, and the airbag may be damaged, or the first valve and/or the second valve may leak air. Wherein, the preset inflation time can be set to any value of 2-10 seconds.
Referring to fig. 2, after this step, the following steps may be included:
s111: and standing the air bag within a third preset time.
After the airbag is inflated to the set first pressure value, the airbag is kept still for a third preset time to observe whether the airbag leaks or not, or whether the airbag fails to close or not, specifically, if the airbag fails to close or fails to close, the pressure in the airbag is continuously increased within the third preset time.
S112: and judging whether the pressure change in the air bag in the third preset time exceeds a preset pressure change value.
After the air bag is left standing for the third preset time, if the pressure change in the air bag exceeds the preset pressure change value, step S113 is executed. If the pressure increase or decrease exceeds a preset pressure change value, indicating that a closing fault of the inflation module or a problem of air leakage may exist, executing step S113 to alarm and prompting a user to detect the device abnormality; otherwise, if the pressure change in the airbag does not exceed the preset pressure change value, it can be determined that the tightness of the valve is good and no air leakage occurs, and step S114 is executed.
S113: an alarm program is started.
The step starts an alarm program to send out warning information to prompt a user that the blood pressure detection equipment is abnormal so that the user can timely cope with the abnormal condition, and the discomfort of the detected part of the detected person caused by the overlarge inflating pressure of the air bag or the deviation of the detection result caused by the air leakage of the air bag are avoided.
S114: step S12 is performed.
If it is detected in step S112 that the pressure change in the air bag does not exceed the preset pressure change value within the third preset time, the valve failure detection may be performed, and step S12 is performed to perform the valve failure detection.
S12: the first valve is opened to deflate the balloon.
This step opens the first valve to detect a fault condition of the first valve. Generally speaking, in order to guarantee the safety of blood pressure detection, can set up two and more than the valve of quantity at blood pressure detection device, avoid the valve to appear damaging and lead to the gassing process to go wrong.
Wherein the first valve may be any one of a plurality of valves. For example, the first valve may be designated when the detection program is set, and after the designation, the first valves are all the designated valves each time the automatic detection program of the valves is performed; the first valve may also be designated by the operator as required for the test prior to each test.
S13: and determining the fault condition of the first valve according to the change of the air pressure in the air bag in the deflation process.
Due to the possibility of damage to the valve components, after the valve is damaged, the air bleeding function of the valve may be abnormal, for example, the air bleeding speed may be too fast or too slow. Therefore, the step can monitor the change of the gas pressure in the air bag after the first valve is opened, and determine whether the first valve is damaged according to the change of the gas pressure in the air bag.
Wherein, the failure condition of the first valve can be determined by the pressure drop value of the gas in the air bag in the preset time. Or after the first valve is opened, the reduction value or the reduction degree of the gas pressure in the air bag can be monitored at intervals, the fault condition of the first valve is determined according to the monitoring result, and the first valve can be considered to be possibly faulted if the pressure is reduced too slowly or the reduction value is too small.
If the first valve is determined to be in fault in the step, the second valve can be opened and an alarm program is started to prompt a user that the first valve is abnormal.
The warning information sent out after the alarm program is started can be voice prompt information, and the voice prompt information contains the number information of the first valve, so that the target can be quickly locked during maintenance. For example, the voice warning message may be "first valve abnormal" or "first valve abnormal", etc.
This embodiment aerifys less pressure value to the gasbag earlier in the stage of aerifing to carry out the fault detection of valve, can indicate the user when the valve trouble, the user of being convenient for is according to the fault conditions decision and is changed blood pressure monitor or is overhauld the valve, effectively avoids aerifing higher pressure to the gasbag and lead to being weighed wounded by the detector when the valve trouble, promotes the security performance.
Referring to fig. 3, fig. 3 is a schematic flow chart of an embodiment of fault detection of a first valve of a blood pressure detecting device according to the present application. The embodiment comprises the following steps:
s21: and in the inflation stage, inflating the air bag to enable the air pressure in the air bag to reach a set first pressure value.
In the step, after the cuff is determined to be sleeved to the corresponding detection position of the arm or leg of the detected person and all the valves are closed, the air bag is inflated, so that the air pressure in the air bag reaches a set first pressure value.
Optionally, the first pressure value is set to be lower than a maximum pressure value required by a blood pressure detection standard.
S22: and opening the first valve, and closing the first valve after the opening state of the first valve is kept for a first preset time.
In the embodiment, the opening state of the first valve is kept for the first preset time, whether the air bleeding function of the first valve is abnormal or not is detected within the first preset time, and if the air bleeding function is abnormal, the first valve is determined to be in a fault.
S23: and calculating the difference value of the air pressure change in the air bag within the first preset time.
Wherein, the air pressure variation difference means: the difference value of the air pressure in the air bag at the moment of opening the first valve and the air pressure in the air bag at the moment of closing the first valve is the reduction value of the air pressure in the air bag in the process of opening the first valve.
S24: and judging whether the air pressure change difference value is smaller than a first change threshold value.
If the air pressure change difference value is smaller than the first change threshold value, determining that the first valve has a fault, and executing a step S25; otherwise, if the air pressure change difference value is larger than or equal to the first change threshold value, determining that the first valve does not have a fault.
The first preset time may be set to 1 second, and the first variation threshold may be set to any one pressure value from 3mmHg to 10 mmHg. Or, the first change threshold may be determined by the air pressure in the air bag when the first valve is opened, and specifically may be obtained by subtracting the first set adjustment value from the product of the air pressure in the air bag when the first valve is opened and the first set magnification, where the calculation formula is as follows:
DeltaPLim1＝μ 1 *StartP1–DeltaP1
where DeltaPLim1 represents a first variation threshold, μ 1 The first set magnification is shown, startP1 shows the air pressure in the air bag when the first valve is opened, and DeltaP1 shows the first set adjustment value.
Alternatively, mu 1 0.2 is taken, and 2-3 mmHg is taken as DeltaP1.
S25: determining that the first valve is malfunctioning.
If the first valve is determined to be in fault, the second valve can be opened and an alarm program can be started to release the gas in the air bag and prompt a user to pay attention to the fault of the valve.
The warning information sent after the alarm program is started can be voice prompt information, the voice prompt information contains the number information of the first valve, the target is quickly locked when maintenance is facilitated, and the first valve is directly maintained or replaced. For example, the voice warning message may be "first valve abnormal" or "first valve abnormal", etc.
S26: it is determined that the first valve is not malfunctioning.
After this step, the second valve may continue to be fault checked.
This embodiment detects the atmospheric pressure variation value in the gasbag at first preset time, only needs to acquire two atmospheric pressure data, namely, atmospheric pressure value in the gasbag when first valve is opened and the atmospheric pressure value in the gasbag when first valve is closed, and the data bulk is few, and the calculated amount is little, and it is shorter to detect required time, and, measures the mode degree of accuracy of the gassing function of first valve with the atmospheric pressure variation value in the gasbag height, directly perceived convenience.
In another embodiment, the air pressure decrease rate (or air pressure decrease value) in the air bag is detected at preset intervals within a second preset time after the first valve is opened, and when the air pressure decrease rate is detected to be less than or equal to the first rate threshold value, the first valve is determined to be in failure; and if the air pressure reduction rate is not detected to be less than or equal to the first rate threshold value within the second preset time, determining that the first valve does not have a fault, and closing the valve. Referring to fig. 3, fig. 3 is a schematic flow chart of another embodiment of fault detection of a first valve of a blood pressure detecting device according to the present application. The embodiment comprises the following steps:
s31: and in the inflation stage, inflating the air bag to enable the air pressure in the air bag to reach a set first pressure value.
In the step, after the cuff is determined to be sleeved to the corresponding detection position of the arm or leg of the detected person and all the valves are closed, the air bag is inflated, so that the air pressure in the air bag reaches a set first pressure value.
Optionally, the first pressure value is set to be lower than a maximum pressure value required by a blood pressure detection standard.
S32: the first valve is opened to deflate the balloon.
In the embodiment, the first valve is opened to detect whether the air bleeding function of the first valve is abnormal, and if the air bleeding function is abnormal, the first valve is determined to be in fault.
In the step, timing is started while the first valve is started so as to detect whether the air bleeding function of the first valve is abnormal or not within second preset time. The second preset interval time may be, for example, 1 to 3 seconds.
S33: the rate of decrease of the air pressure in the air bag is detected at predetermined intervals.
The preset interval time may be any time value of 8 to 15 milliseconds, and may be 9 milliseconds, 10 milliseconds, 12 milliseconds, or the like, for example.
Wherein the air pressure reduction rate is as follows: and dividing the difference value of the air pressure value in the air bag when the preset interval time is started and the air pressure value in the air bag when the preset interval time is ended by the result obtained by the preset interval time. The rate of air pressure drop can be calculated specifically by the following formula:
Rate＝(StartP2-NowP2)/DeltaT
where, rate represents the air pressure decrease Rate, startP2 represents the air pressure value in the air bag at the start of the preset interval time, nowP2 represents the air pressure value in the air bag at the end of the preset interval time, and DeltaT represents the preset interval time.
S34: it is determined whether the rate of decrease in air pressure is less than or equal to a first rate threshold.
If the air pressure reduction rate is less than or equal to the first rate threshold, it indicates that the first valve may be blocked, resulting in an abnormal air bleeding function, and then it is determined that the first valve is failed, and step S35 is executed; otherwise, if the air pressure drop rate is greater than the first rate threshold, it indicates that the first valve is not malfunctioning, and step S36 is performed.
Wherein the first rate threshold may be set to 3-5 mmHg/s.
S35: determining that the first valve is malfunctioning.
If the first valve is determined to be in fault, the second valve can be opened and an alarm program can be started to release the gas in the air bag, and the prompt function is played.
The warning information sent after the alarm program is started can be voice prompt information, and the voice prompt information contains the number information of the first valve, so that the target can be quickly locked during maintenance. For example, the voice warning message may be "first valve abnormal" or the like.
S36: and judging whether the time of the opening state of the first valve reaches second preset time.
If the opening time of the first valve reaches the second preset time, step S37 may be executed, and the first valve is closed; if the opening time of the first valve does not reach the second preset time, the method returns to step S33 to continue monitoring the deflation process of the first valve.
S37: it is determined that the first valve is not malfunctioning.
After this step, if there are other valves that are not detected, then fault detection can be performed on the other valves. And after the first valve is determined not to be in fault, inflating to the air pressure required by the blood pressure detection standard to perform blood pressure detection.
This embodiment detects gasbag internal gas pressure rate of falling at every preset interval, can reduce the check-out time of first valve greatly, improves detection efficiency.
Wherein after determining that the first valve is not malfunctioning (i.e., after step S26 or S37), the second valve is malfunction-detected to ensure safety of the blood pressure detection process. Referring to fig. 5, the method may include the following steps:
s41: the first valve is closed.
The step of closing the first valve may be performed after the first valve has been detected as malfunctioning.
After the step, the air pressure in the air bag can be detected, if the air pressure in the air bag is smaller than or equal to the preset second pressure value, the air bag is inflated, so that the air pressure in the air bag is larger than the preset second pressure value, and the problem that the fault detection result is inaccurate due to the fact that the air pressure in the air bag is too low is avoided. After the air bag is inflated until the air pressure is larger than the preset second pressure value, the step S24 can be executed after the air path is stable for 1-2 seconds, and the detection accuracy is improved.
If the air pressure in the air bag is detected to be larger than the preset second pressure value, the air bag is not inflated, and the step S42 is directly executed.
S42: the second valve is opened to deflate the balloon.
This step opens the second valve to detect a fault condition of the second valve.
Wherein, the second valve can be any one of a plurality of valves. For example, the second valve may be designated when the detection program is set, and after the designation, the second valves are all the designated valves each time the automatic detection program of the valves is performed; the second valve may also be designated by the operator as required for the test prior to each test.
S43: and determining the fault condition of the second valve according to the change of the air pressure in the air bag during the deflation process.
Due to the possibility of damage to the valve components, after the valve is damaged, the air bleeding function of the valve may be abnormal, for example, the air bleeding speed may be too fast or too slow. Therefore, the step can detect the change of the gas pressure in the air bag during the deflation process after the second valve is opened, and determine whether the second valve is damaged according to the change of the gas pressure in the air bag.
Wherein the failure condition of the second valve can be determined by the value of the decrease in the pressure of the gas in the air bag within a preset time. After the second valve is opened, the reduction value or the reduction degree of the gas pressure in the air bag can be detected at intervals, the fault condition of the second valve is determined according to the detection result, and the second valve can be considered to be possibly faulty if the pressure is reduced too slowly or the reduction value is too small.
In one embodiment, referring to fig. 6, the detecting the failure of the second valve may comprise the steps of:
s51: the first valve is closed.
The step of closing the first valve may be performed after the first valve has been detected as faulty.
After the step, the air pressure in the air bag can be detected, if the air pressure in the air bag is smaller than or equal to the preset second pressure value, the air bag is inflated, so that the air pressure in the air bag is larger than the preset second pressure value, and the problem that the fault detection result is inaccurate due to too low air pressure in the air bag is avoided. After the air bag is inflated until the air pressure is larger than the preset second pressure value, the step S52 can be executed after the air path is stable for 1-2 seconds, and the detection accuracy is improved.
If the air pressure in the air bag is detected to be larger than the preset second pressure value, the air bag is not inflated, and the step S52 is directly executed.
S52: and opening the second valve, and closing the second valve after the opening state of the second valve is kept for a fourth preset time.
In the embodiment, the opening state of the second valve is kept for a fourth preset time, whether the air bleeding function of the second valve is abnormal or not is detected within the fourth preset time, and if the air bleeding function is abnormal, the second valve is determined to be in fault.
S53: and calculating the difference value of the air pressure change in the air bag within the fourth preset time.
The air pressure variation difference means: the difference value of the air pressure in the air bag at the moment when the second valve is opened and the air pressure in the air bag at the moment when the second valve is closed is the reduced value of the air pressure in the air bag in the process that the second valve is in an opened state.
S54: and judging whether the air pressure change difference value is smaller than a second change threshold value.
If the air pressure variation difference is smaller than the second variation threshold, determining that the second valve has a fault, and executing step S55; otherwise, if the air pressure change difference value is larger than or equal to the second change threshold value, determining that the second valve is not in fault.
The fourth preset time may be set to 1 second, and the second variation threshold may be set to any one of pressure values of 3 to 10 mmHg. Or, the second variation threshold may be determined by the air pressure in the air bag when the second valve is opened, and specifically may be obtained by subtracting the second set adjustment value from the product of the air pressure in the air bag when the second valve is opened and the second set magnification, and the calculation formula is as follows:
DeltaPLim2＝μ 2 *StartP3–DeltaP2
where DeltaPLim2 represents a second variation threshold, μ 2 Indicating a second set magnification, startP3 indicating the air pressure in the air bag when the second valve is opened, and DeltaP2 indicating the secondAnd setting an adjusting value.
Alternatively, mu 2 Taking 0.2, taking 2-3 mmHg as DeltaP2.
S55: it is determined that the second valve is malfunctioning.
If the second valve is determined to be in fault, the first valve can be opened and an alarm program can be started to release the gas in the air bag and prompt a user to pay attention to the fault of the valve.
The warning information sent after the alarm program is started can be voice prompt information, the voice prompt information contains the number information of the second valve, the target is quickly locked when the second valve is convenient to maintain, and the second valve is directly maintained or replaced. For example, the voice warning message may be "second valve abnormal" or the like.
S56: it is determined that the second valve is not malfunctioning.
After the step, the fault detection can be continuously carried out on other valves to be detected. Or the air bag can be inflated to the air pressure required by the blood pressure detection standard after the second valve is closed, and the blood pressure detection can be directly carried out.
The embodiment detects the atmospheric pressure change value in the gasbag at the fourth preset time, only needs to acquire two atmospheric pressure data, namely, the atmospheric pressure value in the gasbag when the second valve is opened and the atmospheric pressure value in the gasbag when the second valve is closed, and the data bulk is few, and the calculated amount is little, and it is shorter to detect required time, and, measures the mode degree of accuracy of the gassing function of second valve with the atmospheric pressure change value in the gasbag high, directly perceived convenience.
In another embodiment, the air pressure decrease rate (or air pressure decrease value) in the air bag is detected at preset intervals within a fifth preset time after the second valve is opened, and when the air pressure decrease rate is detected to be less than or equal to the second rate threshold, the second valve is determined to be in failure; and if the air pressure reduction rate is not detected to be less than or equal to the second rate threshold value within the fifth preset time, determining that the second valve is not in fault, and closing the valve. Referring to fig. 7 in particular, fig. 7 is a schematic block diagram of a flow of the fault detection of the second valve of the blood pressure detecting device according to another embodiment of the present application. The embodiment comprises the following steps:
s61: the first valve is closed.
The step of closing the first valve may be performed after the first valve has been detected as malfunctioning.
After the step, the air pressure in the air bag can be detected, if the air pressure in the air bag is smaller than or equal to the preset second pressure value, the air bag is inflated, so that the air pressure in the air bag is larger than the preset second pressure value, and the problem that the fault detection result is inaccurate due to too low air pressure in the air bag is avoided. And after the air bag is inflated until the air pressure is greater than the preset second pressure value, the step S62 can be executed after the air path is stable for 1-2 seconds, so that the detection accuracy is improved.
If the air pressure in the air bag is detected to be larger than the preset second pressure value, the air bag is not inflated, and the step S62 is directly executed.
S62: the second valve is opened to deflate the balloon.
In the embodiment, the second valve is opened to detect whether the air bleeding function of the second valve is abnormal, and if the air bleeding function is abnormal, the second valve is determined to be in fault.
In the step, when the second valve is opened, timing is started so as to detect whether the air bleeding function of the second valve is abnormal or not within a fifth preset time. The second preset interval time may be, for example, 1 to 3 seconds.
S63: the rate of decrease of the air pressure in the air bag is detected at predetermined intervals.
The preset interval time may be any time value of 8 to 15 milliseconds, and may be 9 milliseconds, 10 milliseconds, 12 milliseconds, or the like, for example.
Wherein the air pressure reduction rate is as follows: and dividing the difference value of the air pressure value in the air bag when the preset interval time is started and the air pressure value in the air bag when the preset interval time is ended by the result obtained by the preset interval time. The rate of pressure drop can be calculated specifically by the following formula:
Rate＝(StartP4-NowP4)/DeltaT
here, rate represents a pressure drop Rate, startP4 represents a pressure value in the airbag at the start of the preset interval time, nowP4 represents a pressure value in the airbag at the end of the preset interval time, and DeltaT represents the preset interval time.
This embodiment detects gasbag internal gas pressure rate of falling at every preset interval, can reduce the check-out time of second valve greatly, improves detection efficiency.
S64: it is determined whether the rate of air pressure drop is less than or equal to a second rate threshold.
If the air pressure drop rate is less than or equal to the second rate threshold, it indicates that the second valve may be blocked, resulting in an abnormal air bleeding function, and then it may be determined that the second valve is failed, and step S65 is executed; otherwise, if the air pressure drop rate is greater than the second rate threshold, it indicates that the second valve is not malfunctioning, and step S66 is executed.
Wherein the second rate threshold may be set to 3-5 mmHg/s.
S65: it is determined that the second valve is malfunctioning.
If the second valve is determined to be in fault, the second valve can be opened and an alarm program is started to release the gas in the air bag, and the prompt function is played.
The warning information sent after the alarm program is started can be voice prompt information, and the voice prompt information contains the number information of the second valve, so that the target can be quickly locked during maintenance. For example, the voice warning message may be "second valve abnormal" or the like.
S66: and judging whether the time of the opening state of the second valve reaches a fifth preset time.
If the opening time of the second valve reaches the fifth preset time, step S67 may be executed, and the second valve is closed; and if the opening time of the second valve does not reach the fifth preset time, returning to the step S63, and continuously monitoring the air bleeding process of the second valve.
S67: it is determined that the second valve is not malfunctioning.
In an embodiment, after it is determined that the second valve has not failed, if there are other valves to be detected, the second valve may be closed, and the failure detection of the other valves to be detected is continued.
In another embodiment, referring to fig. 8, after step S67 determining that the second valve is not failed, the method may include the following steps:
s71: and closing the second valve and continuing to inflate the air bag until the air pressure in the air bag reaches the detection standard so as to finish the inflation operation of the air bag in the inflation stage.
The step of closing the second valve may be performed after the second valve failure is detected.
The detection standard can be determined according to a blood pressure detection algorithm, specifically, after a blood pressure detection is performed on a patient, a pressure value required by the blood pressure detection can be determined according to a detection result, so that the pressure value required by the blood pressure detection is determined adaptively, and for example, the systolic pressure (or average pressure) of a measurement result of the time is added with DeltaP to be used as the pressure value required by the next blood pressure detection; wherein, deltaP is a fixed value generally, such as 20-40 mmHg, and can be different according to the type of the patient or the blood pressure value of the measurement result.
Alternatively, after the second valve is closed, the air pressure value in the air bag can be detected before inflation, if the air pressure in the air bag is detected to reach the detection standard, the air bag does not need to be inflated again, and step S72 is executed to directly detect the blood pressure.
And once the air pressure in the air bag is detected to be greater than or equal to the detection standard, the inflation module is turned off, and the inflation is stopped.
S72: the air bag is subjected to air discharge operation in a discharge stage to detect the blood pressure.
The step enters a deflation stage to deflate the air bag, and blood pressure detection is carried out in the deflation stage to obtain blood pressure detection results, such as blood pressure data of diastolic pressure, systolic pressure, average pressure and the like. The deflation operation can open the first valve and/or the second valve for deflation, and can also control the opening and closing of the valve connected with the air bag according to the program set by blood pressure detection so as to control the deflation of the air bag.
Under the condition of two valves, if one valve fails, the other valve can fail at any time and any place, and if the other valve fails in the blood pressure detection process, the exhaust is not timely, and the detected part is continuously pressed, so that ischemia and even crush injury can be caused. This embodiment is detecting first valve and the second valve is all intact after, carries out blood pressure check, guarantees that two valves homoenergetic when blood pressure check normally deflate, even there is the condition of valve trouble in the blood pressure check process, but under the normal operating, the possibility that two valves broke down simultaneously is extremely low, like this, can ensure that at least one valve normally works when blood pressure check, very big degree ground has guaranteed blood pressure check's security.
Referring to fig. 9, fig. 9 is a schematic block diagram of a circuit structure of an embodiment of a blood pressure detecting device according to the present application. The blood pressure detection device 200 comprises a processor 201 and a memory 202, the memory 202 is used for storing program data, and the processor 201 is used for executing the program data to realize the following method:
in the inflation stage, inflating the air bag to enable the air pressure in the air bag to reach a set first pressure value, wherein the set first pressure value is smaller than the maximum pressure value required by the blood pressure detection standard; opening the first valve to deflate the air bag; and detecting the change condition of the air pressure in the air bag, and determining the fault condition of the first valve.
It is understood that the processor 201 in this embodiment is also used to implement the steps of the above-mentioned embodiments of the fault detection method of the blood pressure detection device of this application. For the description of the steps executed in the processing, please refer to the description of the steps in the embodiment of the fault detection method of the blood pressure detection apparatus of the present application, which is not repeated herein.
Referring to fig. 10, fig. 10 is a schematic block diagram of a circuit structure of an embodiment of a computer-readable storage medium 300 of the present application, in which program data 301 is stored, and when the program data 301 is executed by a processor, the method is implemented as follows:
in the inflation stage, inflating the air bag to enable the air pressure in the air bag to reach a set first pressure value, wherein the set first pressure value is smaller than the maximum pressure value required by the blood pressure detection standard; opening the first valve to deflate the air bag; and detecting the change condition of the air pressure in the air bag, and determining the fault condition of the first valve.
It is understood that the program data 301 in this embodiment is further used to realize the steps of the above embodiments of the fault detection method of the blood pressure detection device of this application when being executed by the processor.
For the description of the steps executed in the processing, please refer to the description of the steps in the embodiment of the fault detection method of the blood pressure detection device of the present application, which is not repeated herein.
The computer storage medium 300 may be a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk, which can store program codes.
In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other manners. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit. The integrated unit may be implemented in the form of hardware, or may also be implemented in the form of a software functional unit.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.

Claims (11)

1. A fault detection method of a blood pressure detection device, which is characterized by comprising an air bag, wherein at least a first valve and a second valve are arranged on the air bag, and the fault detection method comprises the following steps:
in an inflation stage, inflating the air bag to enable the air pressure in the air bag to reach a set first pressure value, wherein the set first pressure value is smaller than a maximum pressure value required by a blood pressure detection standard;
opening the first valve to deflate the balloon;
and determining the fault condition of the first valve according to the change of the air pressure in the air bag in the deflation process.
2. The method of claim 1, wherein said opening said first valve comprises:
opening the first valve, and closing the first valve after the opening state of the first valve is kept for a first preset time;
the determining the fault condition of the first valve according to the change of the air pressure in the air bag in the deflation process comprises the following steps:
calculating the difference value of the air pressure change in the air bag within the first preset time;
and when the air pressure change difference value is smaller than a first change threshold value, determining that the first valve has a fault.
3. The method of claim 1, wherein said determining a fault condition of said first valve based on a change in air pressure within said balloon during deflation comprises:
detecting the air pressure reduction rate in the air bag at intervals of preset time within second preset time;
determining that the first valve is malfunctioning upon detecting that the rate of air pressure decrease is less than or equal to a first rate threshold.
4. The method of claim 2 or 3, wherein after the determining that the first valve is malfunctioning, the method further comprises: and opening the second valve and starting an alarm.
5. The method of claim 1, wherein after said determining a fault condition of said first valve based on a change in air pressure within said balloon during deflation, said method further comprises:
if the first valve is determined not to be in fault, closing the first valve;
opening the second valve to deflate the balloon;
and determining the fault condition of the second valve according to the change of the air pressure in the air bag in the deflation process.
6. The method of claim 5, wherein the step of removing the metal layer comprises removing the metal layer from the metal layer
Prior to said opening said second valve to deflate said balloon, said method further comprising:
and detecting the air pressure in the air bag, and inflating the air bag when the air pressure in the air bag is less than or equal to a preset second pressure value so as to enable the air pressure in the air bag to be greater than the preset second pressure value.
7. The method of claim 5, wherein if it is determined that the second valve is not malfunctioning, the method further comprises:
closing the second valve and continuing to inflate the air bag until the air pressure in the air bag reaches a detection standard so as to finish the inflation operation of the air bag in the inflation stage;
and performing deflation operation in a deflation stage on the air bag to detect the blood pressure.
8. The method of claim 1,
after the inflating the airbag to make the air pressure in the airbag reach the set first pressure value, the method further comprises the following steps:
determining whether the pressure change in the air bag within a third preset time exceeds a preset pressure change value;
and if the pressure change exceeds the preset pressure change value, starting an alarm program.
9. The method of claim 1, wherein the first pressure value is 30-60 mmHg.
10. A blood pressure monitoring device comprising a processor and a memory, the memory for storing program data, the processor for executing the program data to implement the method of any one of claims 1-9.
11. A computer-readable storage medium, in which program data are stored which, when being executed by a processor, are adapted to carry out the method of any one of claims 1-9.
CN202110495135.XA 2021-05-07 2021-05-07 Method for detecting failure of blood pressure detection device, and storage medium Pending CN115299903A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110495135.XA CN115299903A (en) 2021-05-07 2021-05-07 Method for detecting failure of blood pressure detection device, and storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110495135.XA CN115299903A (en) 2021-05-07 2021-05-07 Method for detecting failure of blood pressure detection device, and storage medium

Publications (1)

Publication Number Publication Date
CN115299903A true CN115299903A (en) 2022-11-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110495135.XA Pending CN115299903A (en) 2021-05-07 2021-05-07 Method for detecting failure of blood pressure detection device, and storage medium

Country Status (1)

Country Link
CN (1) CN115299903A (en)

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