CN109893121B - Electrocardiosignal acquisition method, electrocardiosignal acquisition device, electrocardiosignal acquisition terminal and computer-readable storage medium - Google Patents
Electrocardiosignal acquisition method, electrocardiosignal acquisition device, electrocardiosignal acquisition terminal and computer-readable storage medium Download PDFInfo
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Abstract
The invention is suitable for the technical field of medical equipment, and provides an acquisition method, a device, a terminal and a computer readable storage medium of electrocardiosignals, wherein the acquisition method of the electrocardiosignals comprises the following steps: acquiring an electrocardiosignal acquired in a current electrocardiosignal acquisition time period, and calculating the total noise intensity corresponding to the electrocardiosignal acquired in the current electrocardiosignal acquisition time period; judging whether the total noise intensity is smaller than a first preset noise intensity; if the total noise intensity is smaller than the first preset noise intensity, determining that the electrocardiosignals meeting the quality requirement are acquired, finishing the acquisition of the electrocardiosignals, and outputting the electrocardiosignals acquired in the current electrocardiosignal acquisition time period; the automatic acquisition of the electrocardiosignals is realized, the higher acquisition quality of the electrocardiosignals is ensured, the electrocardiosignals are not interfered by human factors, and the acquisition efficiency of the electrocardiosignals is improved.
Description
Technical Field
The invention belongs to the technical field of medical equipment, and particularly relates to an electrocardiosignal acquisition method, an electrocardiosignal acquisition device, an electrocardiosignal acquisition terminal and a computer-readable storage medium.
Background
The acquisition of human body electrocardiosignals is generally obtained by contacting electrodes with a human body to form leads and recording the change of heart potential along with time from the body surface. The quality of the electrocardiographic signal directly affects the readability and analyzability of the electrocardiographic report.
However, the conventional collection of the electrocardiograph signals depends on manual operation, and when an operator is not focused or the operation is not standard, the collected electrocardiograph signals often carry large interference, which brings obstacles to analysis of an electrocardiograph report, and even needs to be collected again, thereby greatly affecting the collection efficiency of the electrocardiograph signals.
Disclosure of Invention
In view of this, embodiments of the present invention provide a method, an apparatus, a terminal and a computer-readable storage medium for acquiring an electrocardiographic signal, which can solve the problem of low electrocardiographic signal acquisition efficiency.
The first aspect of the embodiments of the present invention provides a method for acquiring an electrocardiographic signal, including:
acquiring an electrocardiosignal acquired in a current electrocardiosignal acquisition time period, and calculating the total noise intensity corresponding to the electrocardiosignal acquired in the current electrocardiosignal acquisition time period;
judging whether the total noise intensity is smaller than a first preset noise intensity;
and if the total noise intensity is smaller than the first preset noise intensity, determining that the electrocardiosignals meeting the quality requirement are acquired, finishing the acquisition of the electrocardiosignals, and outputting the electrocardiosignals acquired in the current electrocardiosignal acquisition time period.
A second aspect of the embodiments of the present invention provides an electrocardiograph signal acquisition apparatus, including:
the calculating unit is used for acquiring the electrocardiosignals acquired in the current electrocardiosignal acquisition time period and calculating the total noise intensity corresponding to the electrocardiosignals acquired in the current electrocardiosignal acquisition time period;
the judging unit is used for judging whether the total noise intensity is smaller than a first preset noise intensity;
and the output unit is used for determining that the electrocardiosignals meeting the quality requirement are acquired if the total noise intensity is smaller than the first preset noise intensity, finishing the acquisition of the electrocardiosignals and outputting the electrocardiosignals acquired in the current electrocardiosignal acquisition time period.
A third aspect of the embodiments of the present invention provides a terminal, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the method when executing the computer program.
A fourth aspect of embodiments of the present invention provides a computer-readable storage medium storing a computer program which, when executed by a processor, implements the steps of the above-described method.
In the embodiment of the application, when the electrocardiosignals collected in the current electrocardiosignal collecting time period are obtained, calculating the total noise intensity corresponding to the electrocardiosignals acquired within the current electrocardiosignal acquisition time period, judging whether the total noise intensity is smaller than a first preset noise intensity or not, so as to confirm that the degree of noise interference on the electrocardiosignals acquired in the current electrocardiosignal acquisition time period is smaller when the total noise intensity is smaller than the first preset noise intensity, and can meet the requirements of acquisition quality, and then automatically finishing the acquisition of the electrocardiosignals and outputting the electrocardiosignals acquired in the current electrocardiosignal acquisition time period, thereby realizing the automatic acquisition of the electrocardiosignals, ensuring that the electrocardiosignals have higher acquisition quality, being free from the interference of human factors and improving the acquisition efficiency of the electrocardiosignals.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic flow chart illustrating an implementation of a method for acquiring an electrocardiographic signal according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a specific implementation of step 101 of a method for acquiring an electrocardiographic signal according to an embodiment of the present invention;
fig. 3 is a schematic flowchart of a first specific implementation of step 201 of a method for acquiring an electrocardiographic signal according to an embodiment of the present invention;
fig. 4 is a schematic flowchart of a second specific implementation of step 201 of a method for acquiring an electrocardiographic signal according to an embodiment of the present invention;
fig. 5 is a block diagram of an electrocardiograph signal acquisition device according to an embodiment of the present invention;
fig. 6 is a block diagram of a terminal according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all 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 terms "comprises" and "comprising," and any variations thereof, in the description and claims of this invention and the above-described drawings are intended to cover non-exclusive inclusions. For example, a process, method, or 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. Furthermore, the terms "first," "second," and "third," etc. are used to distinguish between different objects and are not used to describe a particular order.
In order to explain the technical solution of the present invention, the following description will be given by way of specific examples.
Fig. 1 shows a schematic flow chart of an implementation of a method for acquiring an electrocardiographic signal according to an embodiment of the present invention, where the method is applied to a terminal, can be executed by an electrocardiographic signal acquisition device configured on the terminal, and is suitable for a situation where the acquisition quality of the electrocardiographic signal needs to be improved, and includes steps 101 to 103.
The heart is the motive apparatus for the blood circulation of the human body. It is because the heart automatically and continuously performs rhythmic contraction and relaxation activities, so that the blood continuously flows in the closed circulatory system, and the life is maintained. Before and after the heart beats, the cardiac muscle becomes excited. During the activation process, a weak bioelectric current is generated. Thus, each cardiac cycle of the heart is accompanied by bioelectrical changes. This bioelectrical change can be transmitted to various parts of the body surface. Because the tissues of each part of the body are different, and the distances from the heart are different, the electric potentials of the electrocardiosignals displayed on different parts of the body are also different. For a normal heart, the direction, frequency, and intensity of this bioelectrical change are regular. If the electric signals of different parts of the body surface are detected by the electrodes, amplified by the amplifier and recorded by the recorder, the electrocardiogram can be obtained. The doctor can diagnose the heart disease by comparing the recorded form, amplitude and relative time relation of every wave with the normal electrocardiogram.
Therefore, when acquiring an electrocardiographic signal, it is generally necessary to acquire an electrocardiographic signal with a set acquisition time period in order to analyze the electrocardiographic signal. For example, the set acquisition time period is 10 seconds, 20 seconds, 30 seconds, or 60 seconds.
The current electrocardiosignal acquisition time period is the electrocardiosignal acquisition time period with the time length from the current moment being the set acquisition time length when the electrocardiosignals are acquired. For example, if the current time is t1, when the time length from the time t0 to the time t1 is the set acquisition time length, the time period from the time t0 to the time t1 is the current electrocardiographic signal acquisition time period. The current electrocardiosignal acquisition time period is advanced along with the time. For example, when the current time is t1+2, the current cardiac electrical signal acquisition time period is from time t0+2 to time t1+ 2.
In the embodiment of the application, while acquiring the electrocardiosignals acquired within the current electrocardiosignal acquisition time period, the total noise intensity corresponding to the electrocardiosignals acquired within the current electrocardiosignal acquisition time period needs to be calculated; so as to determine whether the acquired electrocardiosignals meet the quality requirement or not.
Specifically, the total noise intensity refers to the noise intensity corresponding to the electrocardiographic signal acquired within a time period from the current time to the set acquisition time.
And 102, judging whether the total noise intensity is smaller than a first preset noise intensity.
When the total noise intensity is greater than or equal to the first preset noise intensity, the electrocardiosignal acquired in the current electrocardiosignal acquisition time period has relatively large noise and does not meet the acquisition quality requirement; when the total noise intensity is smaller than the first preset noise intensity, the electrocardiosignal acquired in the current electrocardiosignal acquisition time period is indicated to be less interfered by noise, and the requirement on acquisition quality can be met.
Because the electrocardiosignals are directly taken from the human body, various noise signals can be inevitably mixed in the acquisition process of the electrocardiosignals, so that the acquisition quality of the electrocardiosignals is influenced. Therefore, when acquiring an electrocardiographic signal acquired in a current electrocardiographic signal acquisition time period, the total noise intensity corresponding to the current electrocardiographic signal acquisition time period needs to be calculated, and whether the total noise intensity is smaller than the first preset noise intensity is judged, so as to determine whether the electrocardiographic signal meets the requirement of acquisition quality.
And 103, if the total noise intensity is smaller than the first preset noise intensity, determining that the electrocardiosignals meeting the quality requirement are acquired, and finishing the acquisition of the electrocardiosignals.
When the total noise intensity is smaller than the first preset noise intensity, the electrocardiosignal acquired in the current electrocardiosignal acquisition time period is indicated to be less interfered by noise, and the requirement on acquisition quality can be met. Therefore, the acquisition of the electrocardiosignals can be finished, the electrocardiosignals acquired in the current electrocardiosignal acquisition time period are output, the automatic acquisition of the electrocardiosignals is realized, meanwhile, the electrocardiosignals are ensured to have higher acquisition quality and are not interfered by human factors, and the acquisition efficiency of the electrocardiosignals is improved.
In the embodiment of the application, when the electrocardiosignals collected in the current electrocardiosignal collecting time period are obtained, the total noise intensity corresponding to the electrocardiosignals collected in the current electrocardiosignal collecting time period is calculated, and whether the total noise intensity is smaller than a first preset noise intensity or not is judged, so that whether the collecting quality of the obtained electrocardiosignals meets the requirements or not is determined. When the total noise intensity is smaller than the first preset noise intensity, the fact that the degree of noise interference on the electrocardiosignals collected in the current electrocardiosignal collection time period is small is confirmed, the requirement of collection quality can be met, the collection of the electrocardiosignals is automatically finished, the electrocardiosignals collected in the current electrocardiosignal collection time period are output, the automatic collection of the electrocardiosignals is achieved, the collection of the electrocardiosignals is guaranteed not to be interfered by human factors, and the collection quality and the collection efficiency of the electrocardiosignals are improved.
As an embodiment of the present application, as shown in fig. 2, in the step 101, the calculating a total noise intensity corresponding to the electrocardiographic signal acquired in the current electrocardiographic signal acquisition time period may include: step 201 to step 202.
And step 202, accumulating the sub-noise intensities to obtain the total noise intensity.
For example, when the electrocardiograph is turned on to acquire an electrocardiograph signal, the electrocardiograph first obtains initialization parameters for initialization, and the initialization parameters may include: the maximum acquisition time length T of the electrocardiosignals, the set acquisition time length T1 of the electrocardiosignals, the noise intensity calculation period T2 which is one or more parameters of T1/m (m is more than 1), a first preset noise intensity E, a second preset noise intensity n1, a third preset noise intensity n2 and the like. The specific values of T, T1, T2, E, n1 and n2 can be set according to the actual application scenario. For example, T may be 1 to 3 minutes, T1 may be 10 to 60 seconds, and T2 may be 0.2 to 0.5 seconds.
After the electrocardiograph finishes initialization, acquiring electrocardiograph signals from the moment T0 being 0, and calculating the first sub-noise intensity to obtain the sub-noise intensity E when the first noise intensity calculation period T21 is finishedT21(ii) a Then, at the end of the second noise intensity calculation period T22, a second sub-noise intensity calculation is performed to obtain a sub-noise intensity ET22In the order ofDeducing that until T1 is T1, the sub-noise intensity E is obtainedT2mAccumulating the sub-noise intensity in the current electrocardiosignal acquisition time period (t0, t1) to obtain the total noise intensity EGeneral assembly＝ET21+ET22+……+ET2m。
In the embodiment of the present application, when the total noise intensity E isGeneral assemblyWhen the current electrocardiosignal acquisition time period is less than the first preset noise intensity E, the electrocardiosignal acquisition time period indicates that the degree of noise interference on the electrocardiosignal acquired in the current electrocardiosignal acquisition time period (t0, t1) is low, and the requirement on acquisition quality can be met. Therefore, the acquisition of the electrocardiosignals can be finished, the electrocardiosignals acquired in the current electrocardiosignal acquisition time period are output, the automatic acquisition of the electrocardiosignals is realized, meanwhile, the electrocardiosignals are ensured to have higher acquisition quality and are not interfered by human factors, and the acquisition efficiency of the electrocardiosignals is improved.
Optionally, in some embodiments of the application, after the step 102 of determining whether the total noise strength is smaller than a first preset noise strength, the method may further include: if the total noise intensity is greater than or equal to the first preset noise intensity, continuously acquiring electrocardiosignals of N noise intensity calculation cycles, moving the current electrocardiosignal acquisition time period backwards by the N noise intensity calculation cycles, recalculating the total noise intensity corresponding to the electrocardiosignals acquired in the current electrocardiosignal acquisition time period, and ending the acquisition of the electrocardiosignals until the total noise intensity is less than the first preset noise intensity or the total acquisition duration of the electrocardiosignals is greater than the longest acquisition duration of the electrocardiosignals; wherein N is an integer greater than or equal to 1.
When the total noise intensity is greater than or equal to the first preset noise intensity, it indicates that the electrocardiographic signals acquired within the current electrocardiographic signal acquisition time period have relatively large noise and do not meet the requirements of acquisition quality, and therefore, the electrocardiographic signals need to be acquired continuously.
For example, if T0 is 0 and T1 is T1, the total noise intensity E is obtainedGeneral assemblyIf the first preset noise intensity is larger than or equal to the first preset noise intensity E, continuously collecting N noise signalsAnd calculating the electrocardiosignals of the period of noise intensity, moving the current electrocardiosignal acquisition time period backwards by the N periods of noise intensity calculation, namely T0 (N T1/m), T1 (T1 + N T1/m), and recalculating the total noise intensity E corresponding to the electrocardiosignals acquired in the current electrocardiosignal acquisition time period (N T1/m, T1+ N T1/m)General assemblyEnding the acquisition of the electrocardiosignals until the total noise intensity is smaller than the first preset noise intensity E or the total acquisition time of the electrocardiosignals is longer than the longest acquisition time T of the electrocardiosignals; wherein N is an integer greater than or equal to 1.
The total acquisition time length of the electrocardiographic signals refers to the acquisition time length of the electrocardiographic signals obtained by accumulating from the time when the electrocardiograph starts to acquire the electrocardiographic signals; the longest acquisition time of the electrocardiosignals refers to the longest waiting time when the preset electrocardiograph carries out one-time electrocardiosignal acquisition.
Optionally, after the collecting of the electrocardiographic signals is finished when the total collecting duration of the electrocardiographic signals is longer than the longest collecting duration of the electrocardiographic signals, the method may further include: and loading an information prompting interface, and carrying out acquisition of the electrocardiosignals again according to a re-acquisition instruction triggered by the user on the information prompting interface, or outputting the electrocardiosignals acquired in the electrocardiosignal acquisition time period with the minimum total noise intensity in the total acquisition duration according to an acquisition finishing instruction triggered by the user on the information prompting interface.
For example, when the total acquisition duration of the electrocardiographic signals reaches the longest acquisition duration of the electrocardiographic signals, if the electrocardiograph has not acquired the electrocardiographic signals of which the total noise intensity is smaller than the first preset noise intensity, the user can be reminded whether to finish the acquisition of the electrocardiographic signals or not by loading an information prompt interface.
The information prompting interface can display a reacquisition selection control and an acquisition ending selection control, and can also display the source information of main noise and the minimum total noise intensity corresponding to the electrocardiosignals acquired within the set acquisition duration T1, so that a user can determine whether to click the acquisition ending selection control to trigger the acquisition ending instruction or click the reacquisition selection control to trigger the reacquisition instruction according to the source information of the main noise displayed on the information prompting interface and the minimum total noise intensity corresponding to the electrocardiosignals acquired within the set acquisition duration T1.
Optionally, as an embodiment of the present application, as shown in fig. 3, in step 201, respectively calculating the sub-noise intensity corresponding to the electrocardiographic signal in each noise intensity calculation cycle in the current electrocardiographic signal acquisition time period may specifically include steps 301 to 303.
The first preset amplitude is an amplitude corresponding to a QRS wave when the detected electrocardiosignal is extremely weak, the second preset amplitude is an amplitude corresponding to a QRS wave when the detected electrocardiosignal is extremely strong, and specific values of the first preset amplitude and the second preset amplitude can be set according to practical application scenes. When the amplitude of the QRS wave is smaller than or equal to the first preset amplitude or larger than or equal to the second preset amplitude, the QRS wave is abnormal in amplitude.
In the embodiment of the application, when the lead does not fall off and the amplitude of the QRS wave is within the normal range, the baseline drift noise intensity, the power frequency interference noise intensity, and one or more of the myoelectric interference noise intensities of the electrocardiosignal in the period can be calculated by calculating the noise intensity, and the sum of the noise intensities is used as the sub-noise intensity corresponding to the electrocardiosignal in the noise intensity calculation period.
Optionally, as shown in fig. 4, after determining whether there is a lead drop in step 301, step 304 may be further included; step 305 may also be included after the above step 302 of determining whether the amplitude of the QRS wave is greater than the first preset amplitude and less than the second preset amplitude.
And 304, if the lead falls off, determining the sub-noise intensity corresponding to the electrocardiosignal of the noise intensity calculation cycle as a second preset noise intensity.
Step 305, if the amplitude of the QRS wave is less than or equal to a first preset amplitude or greater than or equal to a second preset amplitude, determining that the sub-noise intensity corresponding to the electrocardiographic signal of the noise intensity calculation cycle is a third preset noise intensity.
When the leads fall off and the amplitude of the QRS wave is abnormal, the acquisition of the electrocardiosignals is seriously interfered, the intensity of the sub-noise corresponding to the electrocardiosignals in the noise intensity calculation period can be directly determined to be the second preset noise intensity or the third preset noise intensity, and the interference of other noises is ignored. The second preset noise intensity may be the same as or different from the third preset noise intensity, and the specific value may be determined according to an actual application scenario.
It should be noted that the human electrocardiosignal is a weak electric signal, the signal-to-noise ratio is low, and the human electrocardiosignal is easily interfered by various noises, and the above-mentioned noises are only examples and are not meant to limit the scope of the present application. In other embodiments of the present application, more or fewer noise classes may also be included. For example, noise generated by an electrocardiograph, electrode contact noise, and noise due to human body motion may be included.
An embodiment of the present invention further provides an apparatus for acquiring an electrocardiographic signal, as shown in fig. 5, including:
the calculating unit 501 is configured to acquire an electrocardiographic signal acquired within a current electrocardiographic signal acquisition time period, and calculate a total noise intensity corresponding to the electrocardiographic signal acquired within the current electrocardiographic signal acquisition time period;
a determining unit 502, configured to determine whether the total noise intensity is smaller than a first preset noise intensity;
an output unit 503, configured to determine that the electrocardiographic signal meeting the quality requirement is acquired if the total noise intensity is smaller than the first preset noise intensity, end the acquisition of the electrocardiographic signal, and output the electrocardiographic signal acquired within the current electrocardiographic signal acquisition time period.
Optionally, the calculating unit 501 is further specifically configured to:
respectively calculating the sub-noise intensity corresponding to the electrocardiosignal in each noise intensity calculation period in the current electrocardiosignal acquisition time period;
and accumulating the sub-noise intensities to obtain the total noise intensity.
Optionally, the calculating unit 501 is further specifically configured to: judging whether the leads fall off or not when each noise intensity calculation cycle in the current electrocardiosignal acquisition time period is finished;
if the lead does not fall off, judging whether the amplitude of the QRS wave is larger than a first preset amplitude and smaller than a second preset amplitude;
if the amplitude of the QRS wave is greater than the first preset amplitude and less than the second preset amplitude,
calculating the noise intensity to calculate one or more of the baseline drift noise intensity, the power frequency interference noise intensity and the myoelectricity interference noise intensity of the electrocardiosignal in the period as the sub-noise intensity corresponding to the electrocardiosignal in the noise intensity calculation period; wherein the first preset amplitude is smaller than the second preset amplitude.
Optionally, the calculating unit 501 is further specifically configured to: and if the leads fall off, determining the sub-noise intensity corresponding to the electrocardiosignals of the noise intensity calculation period as a second preset noise intensity.
And if the amplitude of the QRS wave is smaller than or equal to a first preset amplitude or larger than or equal to a second preset amplitude, determining the sub-noise intensity corresponding to the electrocardiosignal of the noise intensity calculation period as a third preset noise intensity.
Optionally, the output unit 503 is further specifically configured to: if the total noise intensity is greater than or equal to the first preset noise intensity, continuously acquiring electrocardiosignals of N noise intensity calculation cycles, moving the current electrocardiosignal acquisition time period backwards by the N noise intensity calculation cycles, recalculating the total noise intensity corresponding to the electrocardiosignals acquired in the current electrocardiosignal acquisition time period, and ending the acquisition of the electrocardiosignals until the total noise intensity is less than the first preset noise intensity or the total acquisition duration of the electrocardiosignals is greater than the longest acquisition duration of the electrocardiosignals; wherein N is an integer greater than or equal to 1.
Optionally, the output unit 503 is further specifically configured to: and when the total acquisition duration of the electrocardiosignals is longer than the longest acquisition duration of the electrocardiosignals, loading an information prompting interface after the acquisition of the electrocardiosignals is finished, and acquiring the electrocardiosignals again according to a re-acquisition instruction triggered by the user on the information prompting interface, or outputting the electrocardiosignals acquired in the electrocardiosignal acquisition time period with the minimum total noise intensity in the total acquisition duration according to an acquisition finishing instruction triggered by the user on the information prompting interface.
It should be noted that, for the process of implementing each function by each unit in the electrocardiograph signal acquisition device provided in this embodiment, reference may be specifically made to the description of the foregoing embodiment, and details are not described here again.
Fig. 6 is a schematic diagram of a terminal according to an embodiment of the present invention. The terminal may be the electrocardiograph described above, as shown in fig. 6, the terminal 6 includes: a processor 60, a memory 61 and a computer program 62, such as an acquisition program of cardiac electrical signals, stored in said memory 61 and executable on said processor 60. The processor 60, when executing the computer program 62, implements the steps in the above-mentioned embodiments of the method for acquiring an electrocardiographic signal, such as the steps 101 to 103 shown in fig. 1. Alternatively, the processor 60, when executing the computer program 62, implements the functions of each module/unit in each device embodiment described above, for example, the functions of the units 501 to 503 shown in fig. 5.
The computer program 62 may be divided into one or more modules/units that are stored in the memory 61 and executed by the processor 60 to implement the present invention. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of the computer program 62 in the terminal 6. For example, the computer program 62 may be divided into a computing unit, a determining unit, and an output unit (unit in a virtual device), and each unit functions specifically as follows:
the calculating unit is used for acquiring the electrocardiosignals acquired in the current electrocardiosignal acquisition time period and calculating the total noise intensity corresponding to the electrocardiosignals acquired in the current electrocardiosignal acquisition time period;
the judging unit is used for judging whether the total noise intensity is smaller than a first preset noise intensity;
and the output unit is used for determining that the electrocardiosignals meeting the quality requirement are acquired if the total noise intensity is smaller than the first preset noise intensity, finishing the acquisition of the electrocardiosignals and outputting the electrocardiosignals acquired in the current electrocardiosignal acquisition time period.
The acquisition device of the cardiac signal may include, but is not limited to, a processor 60 and a memory 61. It will be understood by those skilled in the art that fig. 6 is only an example of the terminal 6, and does not constitute a limitation to the terminal 6, and may include more or less components than those shown in the drawings, or combine some components, or different components, for example, the electrocardiographic signal acquisition apparatus may further include an input-output device, a network access device, a bus, and the like.
The Processor 80 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 61 may be an internal storage unit of the terminal 6, such as a hard disk or a memory of an electrocardiographic signal acquisition device. The memory 61 may also be an external storage device of the terminal 6, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card) and the like provided on the terminal 6. Further, the memory 61 may also include both an internal storage unit and an external storage device of the terminal 6. The memory 61 is used for storing the computer programs and other programs and data required by the terminal 6. The memory 61 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other ways. For example, the above-described embodiments of the apparatus/terminal device are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, 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. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
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 place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (9)
1. A method for acquiring electrocardiosignals is characterized by comprising the following steps:
acquiring an electrocardiosignal acquired in a current electrocardiosignal acquisition time period, and calculating the total noise intensity corresponding to the electrocardiosignal acquired in the current electrocardiosignal acquisition time period; the current electrocardiosignal acquisition time period is an electrocardiosignal acquisition time period with the time length from the current moment being set acquisition time length T1 when the electrocardiosignal is acquired;
judging whether the total noise intensity is smaller than a first preset noise intensity; if the total noise intensity is smaller than the first preset noise intensity, determining that the electrocardiosignals meeting the quality requirement are acquired, automatically finishing the acquisition of the electrocardiosignals, and outputting the electrocardiosignals acquired in the current electrocardiosignal acquisition time period;
if the total noise intensity is greater than or equal to the first preset noise intensity, continuously acquiring electrocardiosignals of N noise intensity calculation cycles, moving the current electrocardiosignal acquisition time period backwards by the N noise intensity calculation cycles, recalculating the total noise intensity corresponding to the electrocardiosignals acquired in the current electrocardiosignal acquisition time period, and ending the acquisition of the electrocardiosignals until the total noise intensity is less than the first preset noise intensity or the total acquisition duration of the electrocardiosignals is greater than the longest acquisition duration of the electrocardiosignals; wherein N is an integer greater than or equal to 1, the noise intensity calculation period T2 is T1/m, and m is greater than 1.
2. The method for acquiring an electrocardiographic signal according to claim 1, wherein the calculating the total noise intensity corresponding to the electrocardiographic signal acquired in the current electrocardiographic signal acquisition period comprises:
respectively calculating the sub-noise intensity corresponding to the electrocardiosignal in each noise intensity calculation period in the current electrocardiosignal acquisition time period;
and accumulating the sub-noise intensities to obtain the total noise intensity.
3. The method for acquiring an electrocardiographic signal according to claim 2, wherein the calculating the sub-noise intensities corresponding to the electrocardiographic signal for each noise intensity calculation cycle in the current electrocardiographic signal acquisition period comprises:
judging whether the leads fall off or not when each noise intensity calculation cycle in the current electrocardiosignal acquisition time period is finished;
if the lead does not fall off, judging whether the amplitude of the QRS wave is larger than a first preset amplitude and smaller than a second preset amplitude;
if the amplitude of the QRS wave is larger than the first preset amplitude and smaller than the second preset amplitude, calculating one or more of the baseline drift noise intensity, the power frequency interference noise intensity and the myoelectricity interference noise intensity of the electrocardiosignal in the noise intensity calculation period as the sub-noise intensity corresponding to the electrocardiosignal in the noise intensity calculation period; wherein the first preset amplitude is smaller than the second preset amplitude.
4. The method for acquiring cardiac electrical signals according to claim 3, further comprising, after the determining whether the lead is missing:
and if the leads fall off, determining the sub-noise intensity corresponding to the electrocardiosignals of the noise intensity calculation period as a second preset noise intensity.
5. The method for acquiring electrocardiographic signals according to claim 3 or 4, wherein after said determining whether the amplitude of the QRS wave is greater than a first preset amplitude and less than a second preset amplitude, the method further comprises:
and if the amplitude of the QRS wave is smaller than or equal to a first preset amplitude or larger than or equal to a second preset amplitude, determining the sub-noise intensity corresponding to the electrocardiosignal of the noise intensity calculation period as a third preset noise intensity.
6. The method for acquiring an electrocardiographic signal according to claim 1, further comprising, after the acquisition of the electrocardiographic signal is finished when the total acquisition duration of the electrocardiographic signal is longer than the longest acquisition duration of the electrocardiographic signal:
and loading an information prompting interface, and carrying out acquisition of the electrocardiosignals again according to a re-acquisition instruction triggered by the user on the information prompting interface, or outputting the electrocardiosignals acquired in the electrocardiosignal acquisition time period with the minimum total noise intensity in the total acquisition duration according to an acquisition finishing instruction triggered by the user on the information prompting interface.
7. An electrocardiosignal acquisition device, comprising:
the calculating unit is used for acquiring the electrocardiosignals acquired in the current electrocardiosignal acquisition time period and calculating the total noise intensity corresponding to the electrocardiosignals acquired in the current electrocardiosignal acquisition time period; the current electrocardiosignal acquisition time period is an electrocardiosignal acquisition time period with the time length from the current moment being set acquisition time length T1 when the electrocardiosignal is acquired;
the judging unit is used for judging whether the total noise intensity is smaller than a first preset noise intensity;
the output unit is used for determining that the electrocardiosignals meeting the quality requirement are acquired if the total noise intensity is smaller than the first preset noise intensity, automatically finishing the acquisition of the electrocardiosignals and outputting the electrocardiosignals acquired in the current electrocardiosignal acquisition time period;
if the total noise intensity is greater than or equal to the first preset noise intensity, continuously acquiring electrocardiosignals of N noise intensity calculation cycles, moving the current electrocardiosignal acquisition time period backwards by the N noise intensity calculation cycles, recalculating the total noise intensity corresponding to the electrocardiosignals acquired in the current electrocardiosignal acquisition time period, and ending the acquisition of the electrocardiosignals until the total noise intensity is less than the first preset noise intensity or the total acquisition duration of the electrocardiosignals is greater than the longest acquisition duration of the electrocardiosignals; wherein N is an integer greater than or equal to 1, the noise intensity calculation period T2 is T1/m, and m is greater than 1.
8. A terminal comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the steps of the method according to any of claims 1 to 6 when executing the computer program.
9. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 6.
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| CN110657884A (en) * | 2019-09-27 | 2020-01-07 | 歌尔股份有限公司 | Wearable device and noise detection method and device thereof |
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