CN104188652A - Real-time control method and system for electrocardiogram data quality - Google Patents

Abstract

The present invention relates to a method and system for real-time control of electrocardiogram data quality. The method includes the following steps: S1, collecting ECG signals; S2, detecting and judging whether each detection item of the ECG signal is based on the detection item judgment standard in the ECG data quality knowledge base Abnormality and then judge whether the quality of the ECG signal is up to the standard. If a certain detection item of the ECG signal is abnormal, it is judged that the quality of the ECG signal is not up to the standard and enter step S3; S3, stop collecting the ECG signal, prompt the abnormal detection item, and the inspection item is abnormal possible reasons, and provide corresponding suggested measures, and sound an alarm at the same time. The real-time control method of electrocardiogram data quality proposed by the present invention is accurate, simple, efficient and fast. When used in conjunction with its monitoring system, it can simultaneously realize the function of collecting electrocardiogram signals and controlling the quality of electrocardiogram data, ensuring that the monitored electrocardiogram signals are all It is an effective signal of quality compliance and improves the accuracy, effectiveness and practicability of the entire monitoring system.

Description

Electrocardiogram data quality real-time control method and system

technical field

The present invention relates to the field of information quality control, specifically a method and system for real-time control of electrocardiogram (ECG) data quality.

Background technique

Electrocardiogram (ECG) measures myocardial electrical signals that change over time, which is an important basis for judging human health status and cardiovascular and other diseases. With the development of information and communication technology, portable ECG monitoring equipment has been widely used in people's daily and remote health monitoring due to its characteristics of simple use, portability and low price.

The mainstream portable ECG monitoring system on the market consists of three modules: ECG data acquisition, ECG data transmission, and ECG data processing. Among them, the data acquisition module collects ECG signals through the direct contact of the lead electrodes with the human body, the data transmission module transmits the collected ECG signals to mobile devices such as smartphones by means of technologies such as Bluetooth, and the data processing module processes the received ECG data. processing, analysis and diagnosis.

Most of the existing portable ECG monitoring systems are used for daily health tracking and early warning of individuals or family members. In actual use, a large amount of invalid ECG data is often collected. The main reasons are as follows:

1) The user lacks relevant professional knowledge and equipment use skills, and the equipment use method is not standardized or even correct;

2) During the use process, due to the user’s moving state, the device’s working condition is abnormal (such as the lead electrode falling off the human body, etc.), but the user does not notice it in time;

3) The surrounding environment causes the collected ECG signal to contain a large proportion of interference noise.

Invalid ECG signals are also known as the data quality of ECG signals is not up to standard, that is, it is impossible to make accurate and scientific analysis and diagnosis of the user's heart health based on these ECG signals. A large amount of low-quality data not only reduces the accuracy, effectiveness and practicability of the entire monitoring system, but also causes a large waste of equipment resources and users' time and energy.

Contents of the invention

The main purpose of the present invention is to provide a real-time control method and system for electrocardiogram data quality in view of the deficiencies in the prior art above.

The technical solution adopted by the present invention to solve the problems of the prior art is: a method for real-time control of data quality of an electrocardiogram, comprising the steps of:

S1. Collect ECG signals from the collection object;

S2. According to the detection item judgment standard in the ECG data quality knowledge base, judge whether each detection item of the ECG signal is abnormal, and then judge whether the quality of the ECG signal is up to standard. If a certain detection item of the ECG signal is abnormal, it is judged that the quality of the ECG signal is not up to standard. And enter step S3, if all the detection items of the ECG signal are normal, it is judged that the quality of the EGC signal is up to standard;

S3. Stop collecting the ECG signal, prompt the abnormal detection item, the possible reason for the abnormality of the inspection item, provide corresponding suggested measures, and sound an alarm at the same time.

Preferably, the detection items include:

Detection item K1, whether there is no ECG signal, the judgment standard for this detection item is: within a given time range, if no ECG signal is detected in a single lead, it is judged that the detection item K1 is abnormal;

Whether the detection item K2 and the ECG signal are seriously missing, the judgment standard for the detection item is: within a given time range, if the missing ratio of the ECG signal of a single lead exceeds the threshold value, it is judged that the detection item K2 is abnormal ;

The detection item K3, whether all or part of the ECG signal is a horizontal line, the judgment standard for this detection item is: within a certain time range, if the ECG signal detected by a single lead is a horizontal line (some slight noise is allowed), then it is judged as the Detection item K3 is abnormal;

The detection item K4, whether the ECG signal has a large fluctuation range, the judgment standard for this detection item is: within a certain time range, if the fluctuation range of the ECG signal detected by a single lead exceeds the threshold value, it is judged as the Detection item K4 is abnormal;

Detection item K5, whether the signal has serious noise interference, the judgment standard for this detection item is: within a certain time range, if the interference noise of the ECG signal detected by a single lead is higher than the threshold value, it is judged as the detection Item K5 exception;

Whether the detection item K6, whether the ECG signal is not a human ECG signal, the judgment standard for this detection item is: if the heart rate value derived from the ECG signal exceeds the range of the human heart rate, it is judged that the detection item K6 is abnormal.

Preferably, the possible reason for the abnormality of the detection item K1 is the absence of leads, the possible reason for the abnormality of the detection item K2 is that the lead wire is disconnected or the lead electrode falls off, and the possible reason for the abnormality of the detection item K3 is The possible reason for the abnormality of the detection item K4 is that the lead electrode falls off, the lead wire is disconnected, or serious baseline drift. The possible reason for the abnormality of the detection item K5 is that the work frequency interference, the possible reason for the abnormality of the detection item K6 is non-human acquisition objects.

Preferably, when the acquisition object is in a static state:

The specific step S1 is:

The ECG signal is collected continuously, and every t second is used as a unit time for collecting the ECG signal;

The step S2 is specifically:

According to each detection item in the ECG data quality knowledge base, it is detected whether the quality of the ECG signal collected in the previous unit time is up to standard. If a certain detection item of the ECG signal is abnormal, it is judged that the quality of the ECG signal is not up to standard and enters step S3. If all detection items of the signal are normal, it is judged that the EGC signal quality is up to standard.

Preferably, when the acquisition object is in motion:

The specific step S1 is:

Collect an ECG signal at intervals of one unit duration, each unit duration is t seconds;

Described step S2 specifically comprises:

S21. Judging whether the time for collecting the ECG currently reaches a unit duration, if yes, proceed to step S22, otherwise continue collecting;

S22. According to each detection item in the ECG data quality knowledge base, detect whether the quality of the ECG signal collected within the unit time is up to standard, if a certain detection item of the ECG signal is abnormal, judge that the quality of the ECG signal is not up to standard and enter step S3, if If all the detection items of the ECG signal are normal, it is judged that the quality of the EGC signal is up to standard.

A real-time control system for electrocardiogram data quality, including an ECG signal acquisition module, a first ECG data communication module, an ECG data quality control module, an ECG data management module, a second ECG data communication module, and an ECG data processing module;

Wherein, the ECG signal acquisition module is used to collect ECG signals from the collection object, the first ECG data communication module is used to send the collected ECG signals to the ECG data quality control module, and the ECG data quality control module detects and judges Whether there is no ECG signal, whether the ECG signal is seriously missing, whether all or part of the ECG signal is a horizontal line, whether the ECG signal has a large fluctuation range, whether the ECG signal has serious noise interference, whether the ECG signal is not a human ECG signal, If any of the above abnormal phenomena exists, it is judged that the quality of the ECG signal is not up to standard, and if all the detection items of the ECG signal are normal, it is judged that the quality of the EGC signal is up to standard;

The ECG data management module stores and manages the ECG signal, the second ECG data communication module is used to send the ECG signal and the result of detection and judgment of the ECG data quality control module to the ECG data processing module, the The ECG data processing module is used to analyze and process the result of the ECG signal to obtain the possible cause of the above abnormality.

Preferably, the ECG signal acquisition module includes sequentially connected sensor electrodes, a preamplifier circuit, a wave notch filter, a secondary amplifier circuit, an anti-aliasing filter circuit, an A/D conversion circuit, and a microcontroller, and the sensor electrodes For collecting ECG analog signals, the preamplifier circuit is used for preamplifying the ECG analog signals, the notch filter is used for filtering harmful signals in the ECG analog signals, and the secondary amplifier circuit is used for The ECG analog signal is amplified twice, the anti-aliasing filter circuit is used to perform anti-aliasing filter processing on the ECG analog signal, and the A/D conversion circuit is used to convert the ECG analog signal into an ECG digital signal, The microcontroller is used to control the first ECG data communication module to send ECG digital signals to the ECG data quality control module.

Preferably, the first ECG data communication module is a Bluetooth module, and the second ECG data communication module is any one of a WIFI module, a GSM module, a 3G module and a 4G module.

The beneficial effects of the present invention are: the real-time control method of electrocardiogram data quality proposed by the present invention is accurate, simple, efficient and fast, and when used in conjunction with its monitoring system, it can simultaneously realize the function of collecting electrocardiographic signals and the quality control function of electrocardiogram data, ensuring all The monitored electrocardiographic signals are effective signals of up to standard quality, which improves the accuracy, effectiveness and practicability of the entire monitoring system.

Description of drawings

Fig. 1 is the flowchart of the embodiment method of the present invention;

Fig. 2 is the flowchart of detection item detection in the embodiment method of the present invention;

Fig. 3 is the flowchart of the method of an embodiment of the present invention;

Fig. 4 is the flowchart of the method of another embodiment of the present invention;

Fig. 5 is a schematic block diagram of the system of the embodiment of the present invention;

The realization of the purpose of the present invention, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, so as to understand the essence of the present invention more clearly and intuitively.

With reference to shown in Fig. 1, the present invention provides a kind of data quality real-time control method of electrocardiogram, comprises the steps:

S1. Collect ECG signals from the collection object;

S2. According to the detection item judgment standard in the ECG data quality knowledge base, judge whether each detection item of the ECG signal is abnormal, and then judge whether the quality of the ECG signal is up to standard. If a certain detection item of the ECG signal is abnormal, it is judged that the quality of the ECG signal is not up to standard. And enter step S3, if all the detection items of the ECG signal are normal, it is judged that the quality of the EGC signal is up to standard;

S3. Stop collecting the ECG signal, prompt the abnormal detection item, the possible reason for the abnormality of the inspection item, provide corresponding suggested measures, and sound an alarm at the same time.

In a specific embodiment of the present invention, the above detection items may include detection item K1, detection item K2, detection item K3, detection item K4, detection item K5, and detection item K6.

Specifically, detection item K1: whether there is no ECG signal, the judgment standard for this detection item is: within a given time range, if no ECG signal is detected in a single lead, it is judged that the detection item K1 is abnormal; The possible reason for abnormal detection items is missing leads.

Detection item K2: Whether there is a serious loss of ECG signal, the judgment standard for this detection item is: within a given time range, if the proportion of ECG signal loss in a single lead exceeds the threshold value, it is judged that the detection item K2 is abnormal ; The possible reason for the abnormality of the detected item is that the lead wire is disconnected or the lead electrode falls off.

Detection item K3: Whether all or part of the ECG signal is a horizontal line, and the judgment standard for this detection item is: within a certain time range, if the ECG signal detected by a single lead is a horizontal line (some slight noise is allowed), then it is judged as the The detection item K3 is abnormal; the possible reason for the abnormality of this detection item is that the lead electrodes are in poor contact with the user's limbs.

Detection item K4: Whether the ECG signal has a large fluctuation range. The judgment standard for this detection item is: within a certain time range, if the fluctuation range of the ECG signal detected by a single lead exceeds the threshold value, it is judged as the The detection item K4 is abnormal; the possible reasons for the abnormality of this detection item are that the lead electrode has fallen off, the lead wire has been disconnected, or severe baseline drift.

Detection item K5: Whether the signal has serious noise interference, the judgment standard for this detection item is: within a certain time range, if the interference noise of the ECG signal detected by a single lead is higher than the threshold value, it is judged as the detection Item K5 is abnormal; the possible reason for the abnormality of the detected item K5 is power frequency interference.

Detection item K6: Whether the ECG signal is not a human ECG signal, the judgment standard for this detection item is: if the heart rate value derived from the ECG signal exceeds the range of the human heart rate, it is judged that the detection item K6 is abnormal. The possible reason for the abnormality of the detection item K6 is the non-human collection object.

Referring to Figure 2, in a preferred embodiment of the present invention, the above-mentioned detection items K1 to K6 are detected sequentially, that is, sequentially detect whether there is no ECG signal, whether the ECG signal is seriously missing, whether all or part of the ECG signal is If there is any one of the above abnormal phenomena, it is judged that the quality of the ECG signal is not up to standard. If all the detection items of the ECG signal are normal, it is judged that the quality of the EGC signal is up to standard. When it is judged that the quality of the ECG signal is not up to standard, stop collecting the ECG signal, prompt the abnormal detection item, the possible cause of the abnormality of the inspection item, provide corresponding suggested measures, and sound an alarm at the same time.

Referring to FIG. 3 , an embodiment of the present invention provides a method for real-time control of electrocardiogram data quality, which is suitable for real-time control when the acquisition object is in a static state. Specifically include steps:

Step S101, continuously collect ECG signals, every t seconds as a unit duration of collecting ECG signals, in an example, t can be 10 seconds;

Step S102, according to each detection item in the ECG data quality knowledge base, detect whether the quality of the ECG signal collected in the previous unit time (the first 10 seconds) is up to standard, and if a certain detection item of the ECG signal is abnormal, it is judged that the quality of the ECG signal is not good. Up to the standard and enter step S3, if all the detection items of the ECG signal are normal, it is judged that the quality of the EGC signal is up to the standard. The specific detection process of each detection item is as described above in FIG. 2 , and will not be repeated here.

Step S103 , stop collecting the ECG signal, prompt the abnormal detection item, the possible reason for the abnormality of the inspection item, provide corresponding suggested measures, and sound an alarm at the same time.

Referring to FIG. 4 , an embodiment of the present invention provides a method for real-time control of electrocardiogram data quality, which is suitable for real-time control when the acquisition object is in motion. Specifically include steps:

Step S201, collect ECG signals once at intervals of one unit duration, each unit duration is t seconds, in an example, t can be 10 seconds;

Step S202, judging whether the time for collecting the ECG currently reaches a unit duration, if yes, proceed to step S203, otherwise continue collecting;

S203. According to each detection item in the ECG data quality knowledge base, detect whether the quality of the ECG signal collected within the unit time is up to standard, if a certain detection item of the ECG signal is abnormal, judge that the quality of the ECG signal is not up to standard and enter step S204, if If all the detection items of the ECG signal are normal, it is judged that the quality of the EGC signal is up to standard. The specific detection process of each detection item is as described above in FIG. 2 , and will not be repeated here.

Step S204, stop collecting ECG signals, prompt the abnormal detection item, the possible reason for the abnormality of the inspection item, provide corresponding suggested measures, and sound an alarm at the same time.

To sum up, the real-time control method of ECG data quality proposed by the present invention is accurate, simple, efficient, and fast. When used in conjunction with its monitoring system, it can simultaneously realize the ECG signal acquisition function and the ECG data quality control function, ensuring that the monitored heart All electrical signals are effective signals of quality compliance, which improves the accuracy, effectiveness and practicability of the entire monitoring system.

Referring to Fig. 5, the embodiment of the present invention provides a real-time data quality control system of an electrocardiogram, comprising an ECG signal acquisition module, a first ECG data communication module, an ECG data quality control module, an ECG data management module, a second ECG data Communication module and ECG data processing module;

Among them, the ECG signal acquisition module is at the forefront of the system and is used to collect ECG signals from the acquisition object. The first ECG data communication module is responsible for the data communication between the ECG signal acquisition module and the ECG data quality control module. Generally, it is composed of a bluetooth module located in the acquisition module and a bluetooth module located in the smart phone. The ECG signal is sent to the ECG data quality control module. The ECG data quality control module can generally be located in a smart phone, and is equipped with a real-time control method for ECG data quality, which is used to detect and judge whether there is no ECG signal, whether the ECG signal is seriously missing, whether all or part of the ECG signal is a horizontal line, whether the ECG signal Whether there is a large fluctuation range, whether there is serious noise interference in the ECG signal, whether the ECG signal is not a phenomenon of human ECG signal, if there is any of the above abnormal phenomena, it is judged that the quality of the ECG signal is not up to standard, if all the detection of the ECG signal If the items are all normal, it is judged that the EGC signal quality is up to standard.

The ECG data management module is generally located in the smart phone, based on the SQLite database management system, has functions such as ECG data storage, query, upload and ECG data format conversion, and is mainly used for storing and managing the ECG signal. The second ECG data communication module is in charge of the data communication between the ECG data management module and the ECG data processing module, and is used to send the ECG signal and the detection and judgment result of the ECG data quality control module to the ECG data processing module. The ECG data processing module is generally located in a remote terminal (generally a high-performance computer or workstation), and has advanced and complex ECG processing, analysis and diagnosis functions, and is mainly used to analyze and process the results of the ECG signal to obtain the above-mentioned Possible causes of the exception, etc.

In a specific embodiment of the present invention, the ECG signal acquisition module includes sequentially connected sensor electrodes, a preamplifier circuit, a wave trap, a secondary amplifier circuit, an anti-aliasing filter circuit, an A/D conversion circuit, and a microcontroller , the sensor electrodes are used to collect ECG analog signals, the preamplifier circuit is used to pre-amplify the ECG analog signals, the notch filter is used to filter out harmful signals in the ECG analog signals, and the secondary The amplification circuit is used to amplify the ECG analog signal twice, the anti-aliasing filter circuit is used to perform anti-aliasing filter processing on the ECG analog signal, and the A/D conversion circuit is used to convert the ECG analog signal The microcontroller is used to control the first ECG data communication module to send the ECG digital signal to the ECG data quality control module.

It can be understood that the first ECG data communication module is a Bluetooth module, and the second ECG data communication module is any one of a WIFI module, a GSM module, a 3G module and a 4G module.

The ECG data quality real-time control system proposed by the present invention is accurate, simple, efficient, and fast. When used in conjunction with its monitoring system, it can simultaneously realize the ECG signal acquisition function and the ECG data quality control function, ensuring that the monitored ECG signals are all It is an effective signal of quality compliance and improves the accuracy, effectiveness and practicability of the entire monitoring system.

The above is only a preferred embodiment of the present invention, and does not limit the scope of its patents. Any equivalent structure or equivalent process transformation made by using the description of the present invention and the contents of the accompanying drawings is directly or indirectly used in other related technical fields. All are included in the scope of patent protection of the present invention in the same way.

Claims (8)

1. an Electrocardiographic quality of data real-time control method, is characterized in that, comprises the steps:

S1, gather ECG signal from acquisition target;

S2, according to detection criterion in ECG quality of data knowledge base detect judge ECG signal each detection whether extremely and then judge that whether the quality of ECG signal up to standard, if certain detection of ECG signal is abnormal, judge that ECG signal quality is not up to standard and enter step S3, if all detections of ECG signal are all normal, judge that EGC signal quality is up to standard;

S3, stop gathering ECG signal, point out abnormal detection, this check item to occur abnormal possible cause, and corresponding suggestion and measure is provided, simultaneously audible alarm.

2. Electrocardiographic quality of data real-time control method according to claim 1, is characterized in that, described detection comprises:

Detection K1, whether exist and there is no ECG signal, to should detection criterion being: in given time range, lead if single and can't detect ECG signal, be judged as this detection K1 abnormal;

Whether detection K2, ECG signal have serious disappearance, to should detection criterion being: in given time range, if the ECG signal deletion ratio of leading single exceedes threshold value, is judged as this detection K2 abnormal;

Whether detection K3, ECG signal are horizontal line in whole or in part, to should detection criterion being: within the regular hour, if the ECG signal detecting that leads single is horizontal line (having allowed noise slightly), is judged as this detection K3 abnormal;

Whether detection K4, ECG signal have larger fluctuating margin, to should detection criterion being: within the regular hour, if the fluctuating margin of the ECG signal that detects of leading single exceedes threshold value, is judged as this detection K4 abnormal;

Whether detection K5, signal have serious noise jamming, to should detection criterion being: within the regular hour, if the interference noise of the ECG signal that detects of leading single, higher than threshold value, is judged as this detection K5 abnormal;

Whether detection K6, ECG signal are not the mankind's ECG signals, to should detection criterion being: if the heart rate value of being derived by ECG signal has exceeded the scope of human heart rate, be judged as this detection K6 abnormal.

3. Electrocardiographic quality of data real-time control method according to claim 2, it is characterized in that, described detection K1 occurs that abnormal possible cause is for the disappearance of leading, described detection K2 occurs that abnormal possible cause is that conducting wire disconnects or crosslinking electrode comes off, described detection K3 occurs that abnormal possible cause is crosslinking electrode and the loose contact of user limbs, described detection K4 occurs that abnormal possible cause is that crosslinking electrode comes off, conducting wire disconnects or serious baseline drift, described detection K5 occurs that abnormal possible cause is that power frequency is disturbed, described detection K6 occurs that abnormal possible cause is non-human acquisition target.

4. Electrocardiographic quality of data real-time control method according to claim 1, is characterized in that, in the time that acquisition target is resting state:

Described step S1 is specially:

Continuous acquisition ECG signal, every t second is as a unit duration that gathers ECG signal;

Described step S2 is specially:

Whether the quality that detects the ECG signal gathering in previous unit duration according to the each detection in ECG quality of data knowledge base is up to standard, if certain detection of ECG signal is abnormal, judge that ECG signal quality is not up to standard and enter step S3, if all detections of ECG signal are all normal, judge that EGC signal quality is up to standard.

5. Electrocardiographic quality of data real-time control method according to claim 1, is characterized in that, in the time that acquisition target is kinestate:

Described step S1 is specially:

ECG signal of interval Yi Ge unit duration collection, each unit duration is t second;

Described step S2 specifically comprises:

S21, judge whether the time of current collection ECG reach a unit duration, if so, enter step S22, otherwise continue to gather;

Whether S22, to detect the quality of the ECG signal gathering in this unit duration according to the each detection in ECG quality of data knowledge base up to standard, if certain detection of ECG signal is abnormal, judge that ECG signal quality is not up to standard and enter step S3, if all detections of ECG signal are all normal, judge that EGC signal quality is up to standard.

6. an Electrocardiographic quality of data real-time control system, it is characterized in that, comprise ECG signal acquisition module, an ECG data communication module, ECG data quality control module, ECG data management module, the 2nd ECG data communication module and ECG data processing module;

Wherein, described ECG signal acquisition module is for gathering ECG signal from acquisition target, the one ECG data communication module is for being sent to described ECG data quality control module by the ECG signal of collection, described ECG data quality control module detects to judge whether to exist does not have ECG signal, whether ECG signal lacks seriously, whether ECG signal is horizontal line in whole or in part, whether ECG signal has larger fluctuating margin, whether ECG signal has serious noise jamming, whether ECG signal is not the phenomenon of mankind ECG signal, if there is above-mentioned any one abnormal phenomena, judge that ECG signal quality is not up to standard, if all detections of ECG signal are all normal, judge that EGC signal quality is up to standard,

Described ECG data management module storage and manage described ECG signal, described the 2nd ECG data communication module is for being sent to described ECG data processing module by the result of ECG signal and described ECG data quality control module detection judgement, described ECG data processing module, for result described in described ECG signal is carried out to analyzing and processing, obtains occurring above-mentioned abnormal possible cause.

7. Electrocardiographic quality of data real-time control system according to claim 6, it is characterized in that, described ECG signal acquisition module comprises the sensor electrode connecting successively, pre-amplification circuit, wave trap, second amplifying circuit, Anti-aliasing Filter Circuits, A/D change-over circuit and microcontroller, described sensor electrode is used for gathering ECG analogue signal, described pre-amplification circuit is for carrying out prime amplification to ECG analogue signal, described wave trap is for ECG analogue signal unwanted signals described in filtering, described second amplifying circuit is for carrying out secondary amplification to ECG analogue signal, described Anti-aliasing Filter Circuits is for carrying out anti-aliasing filtering processing to described ECG analogue signal, described A/D change-over circuit is for converting described ECG analogue signal to ECG digital signal, described microcontroller is used for controlling an ECG data communication module and sends ECG digital signal to described ECG data quality control module.

8. Electrocardiographic quality of data real-time control system according to claim 6, it is characterized in that, a described ECG data communication module is bluetooth module, and described the 2nd ECG data communication module is any one in WIFI module, gsm module, 3G module and 4G module.